Upload 50 random repository samples

.gitattributes

@@ -57,3 +57,77 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/darwin64/libComPYEPICS.dylib filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/darwin64/libca.dylib filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/darwinarm64/libComPYEPICS.dylib filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/darwinarm64/libca.dylib filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/linux32/libComPYEPICS.so filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/linux32/libca.so filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/linux64/libComPYEPICS.so filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/linux64/libca.so filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/linuxarm/libComPYEPICS.so filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/linuxarm/libca.so filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/win32/Com.dll filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/win32/ca.dll filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/win64/Com.dll filter=lfs diff=lfs merge=lfs -text
+pyepics/epics/clibs/win64/ca.dll filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/doctrees/index.doctree filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/fontawesome-webfont.eot filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/fontawesome-webfont.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-bold-italic.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-bold-italic.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-bold.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-bold.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-normal-italic.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-normal-italic.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-normal.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/css/fonts/lato-normal.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/FontAwesome.otf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Inconsolata-Bold.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bold.eot filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bold.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bold.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bold.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bolditalic.eot filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bolditalic.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bolditalic.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-bolditalic.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-italic.eot filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-italic.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-italic.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-italic.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-regular.eot filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-regular.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-regular.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato/lato-regular.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato-Bold.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato-BoldItalic.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato-Italic.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/Lato-Regular.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/RobotoSlab/roboto-slab-v7-bold.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/RobotoSlab/roboto-slab-v7-regular.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/RobotoSlab-Bold.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/RobotoSlab-Regular.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/fontawesome-webfont.eot filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/fontawesome-webfont.ttf filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-bold-italic.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-bold-italic.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-bold.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-bold.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-normal-italic.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-normal-italic.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-normal.woff filter=lfs diff=lfs merge=lfs -text
+pyreadstat/docs/_build/html/_static/fonts/lato-normal.woff2 filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/date_test.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/dates.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/dates_xpt.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/sample.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/sample_bincompressed.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/test_file_label_linux.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/basic/test_file_label_win.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/missing_data/missing_test.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/sas_catalog/test_data_linux.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/sas_catalog/test_data_win.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/test_data/ínternátionál/sample.sas7bdat filter=lfs diff=lfs merge=lfs -text
+pyreadstat/win_libs/samples_64bit/libiconv-static.lib filter=lfs diff=lfs merge=lfs -text
+pyreadstat/win_libs/samples_64bit/libz-static.lib filter=lfs diff=lfs merge=lfs -text

README.md

@@ -0,0 +1,61 @@
+# Dorothydu/gitrepo_top_sample_50
+
+这是从原始MAC数据集随机采样的50个代码仓库样本。
+
+## 数据集信息
+
+- 总大小: 4.9G
+- 包含仓库数量: 50
+
+## 包含的仓库列表
+
+- csvkit
+- tryingsnake
+- flask_sqlalchemy
+- potoroo
+- tzlocal
+- daff
+- deepmerge
+- mypy_boto3_connectcases
+- price_parser
+- telebot
+- galvani
+- multiaddr
+- geomdl
+- murmurhash2
+- autogluon
+- dill
+- jinja2_simple_tags
+- fakeredis
+- prisma
+- django_simple_captcha
+- testpath
+- tinycss2
+- wandb
+- types_filelock
+- argparse_addons
+- django_split_settings
+- accelerate
+- setuptools_scm
+- pebble
+- inotify
+- flake8_import_restrictions
+- gast
+- dbt_exasol
+- python_consul2
+- toolium
+- cleo
+- apache_airflow_providers_docker
+- python_facebook_api
+- dictdiffer
+- autopage
+- splunk_handler
+- django_environ
+- ypy_websocket
+- formulas
+- mypy_boto3_backup
+- typeid_python
+- pymeta3
+- dbt_spark
+- doit
+- smartystreets_python_sdk

aiohttp_cors/.github/dependabot.yml

@@ -0,0 +1,26 @@
+version: 2
+updates:
+- package-ecosystem: pip
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: docutils
+    versions:
+    - "0.17"
+  - dependency-name: flake8
+    versions:
+    - 3.9.0
+  - dependency-name: tox
+    versions:
+    - 3.21.3
+    - 3.21.4
+    - 3.22.0
+  - dependency-name: pygments
+    versions:
+    - 2.7.4
+    - 2.8.0
+  - dependency-name: pytest
+    versions:
+    - 6.2.2

aiohttp_cors/.gitignore

@@ -0,0 +1,53 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+/env/
+/build/
+develop-eggs/
+/dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+/*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+/.tox/
+.coverage
+.coverage.*
+/.cache
+nosetests.xml
+coverage.xml
+*,cover
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+geckodriver.log
+.pytest_cache

aiohttp_cors/.jscs.json

@@ -0,0 +1,62 @@
+{
+    "requireCurlyBraces": [
+        "if",
+        "else",
+        "for",
+        "while",
+        "do",
+        "try",
+        "catch"
+    ],
+    "requireOperatorBeforeLineBreak": true,
+    "requireCamelCaseOrUpperCaseIdentifiers": true,
+    "maximumLineLength": {
+      "value": 80,
+      "allowComments": true,
+      "allowRegex": true
+    },
+    "validateIndentation": 2,
+    "validateQuoteMarks": "'",
+
+    "disallowMultipleLineStrings": true,
+    "disallowMixedSpacesAndTabs": true,
+    "disallowTrailingWhitespace": true,
+    "disallowSpaceAfterPrefixUnaryOperators": true,
+    "disallowMultipleVarDecl": true,
+
+    "requireSpaceAfterKeywords": [
+      "if",
+      "else",
+      "for",
+      "while",
+      "do",
+      "switch",
+      "return",
+      "try",
+      "catch"
+    ],
+    "requireSpaceBeforeBinaryOperators": [
+        "=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=",
+        "&=", "|=", "^=", "+=",
+
+        "+", "-", "*", "/", "%", "<<", ">>", ">>>", "&",
+        "|", "^", "&&", "||", "===", "==", ">=",
+        "<=", "<", ">", "!=", "!=="
+    ],
+    "requireSpaceAfterBinaryOperators": true,
+    "requireSpacesInConditionalExpression": true,
+    "requireSpaceBeforeBlockStatements": true,
+    "requireSpacesInForStatement": true,
+    "requireLineFeedAtFileEnd": true,
+    "requireSpacesInFunctionExpression": {
+        "beforeOpeningCurlyBrace": true
+    },
+    "disallowSpacesInsideObjectBrackets": "all",
+    "disallowSpacesInsideArrayBrackets": "all",
+    "disallowSpacesInsideParentheses": true,
+
+    "disallowMultipleLineBreaks": true,
+    "disallowNewlineBeforeBlockStatements": [
+      "if", "else", "try", "catch", "finally", "do", "while", "for", "function"
+    ]
+}

aiohttp_cors/.jshintrc

@@ -0,0 +1,67 @@
+{
+	"asi": false,
+	"bitwise": false,
+	"boss": false,
+	"browser": true,
+	"camelcase": true,
+	"couch": false,
+	"curly": true,
+	"debug": false,
+	"devel": true,
+	"dojo": false,
+	"eqeqeq": true,
+	"eqnull": true,
+	"es3": true,
+	"esnext": false,
+	"evil": false,
+	"expr": true,
+	"forin": false,
+	"funcscope": true,
+	"globalstrict": false,
+	"immed": true,
+	"iterator": false,
+	"jquery": false,
+	"lastsemic": false,
+	"latedef": false,
+	"laxbreak": true,
+	"laxcomma": false,
+	"loopfunc": true,
+	"mootools": false,
+	"multistr": false,
+	"newcap": true,
+	"noarg": true,
+	"node": false,
+	"noempty": false,
+	"nonew": true,
+	"nonstandard": false,
+	"nomen": false,
+	"onecase": false,
+	"onevar": false,
+	"passfail": false,
+	"plusplus": false,
+	"proto": false,
+	"prototypejs": false,
+	"regexdash": true,
+	"regexp": false,
+	"rhino": false,
+	"undef": true,
+	"unused": "strict",
+	"scripturl": true,
+	"shadow": false,
+	"smarttabs": true,
+	"strict": false,
+	"sub": false,
+	"supernew": false,
+	"trailing": true,
+	"validthis": true,
+	"withstmt": false,
+	"white": true,
+	"worker": false,
+	"wsh": false,
+	"yui": false,
+	"indent": 4,
+	"predef": ["require", "define", "JSON"],
+	"quotmark": "single",
+	"maxcomplexity": 10,
+	"esnext": true
+}

aiohttp_cors/.pep8rc

@@ -0,0 +1,7 @@
+; TODO: This configuration currently not used in pytest-pep8, see
+; <https://bitbucket.org/pytest-dev/pytest-pep8/issues/11/add-option-to-use-pep8rc-configuration>
+
+[pep8]
+show-source = yes
+statistics = yes
+count = yes

aiohttp_cors/.pylintrc

@@ -0,0 +1,393 @@
+[MASTER]
+
+# Specify a configuration file.
+#rcfile=
+
+# Python code to execute, usually for sys.path manipulation such as
+# pygtk.require().
+#init-hook=
+
+# Profiled execution.
+profile=no
+
+# Add files or directories to the blacklist. They should be base names, not
+# paths.
+ignore=
+
+# Pickle collected data for later comparisons.
+persistent=yes
+
+# List of plugins (as comma separated values of python modules names) to load,
+# usually to register additional checkers.
+load-plugins=
+
+# Deprecated. It was used to include message's id in output. Use --msg-template
+# instead.
+#include-ids=no
+
+# Deprecated. It was used to include symbolic ids of messages in output. Use
+# --msg-template instead.
+#symbols=no
+
+# Use multiple processes to speed up Pylint.
+jobs=1
+
+# Allow loading of arbitrary C extensions. Extensions are imported into the
+# active Python interpreter and may run arbitrary code.
+unsafe-load-any-extension=no
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code
+extension-pkg-whitelist=
+
+# Allow optimization of some AST trees. This will activate a peephole AST
+# optimizer, which will apply various small optimizations. For instance, it can
+# be used to obtain the result of joining multiple strings with the addition
+# operator. Joining a lot of strings can lead to a maximum recursion error in
+# Pylint and this flag can prevent that. It has one side effect, the resulting
+# AST will be different than the one from reality.
+optimize-ast=no
+
+
+[MESSAGES CONTROL]
+
+# Only show warnings with the listed confidence levels. Leave empty to show
+# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED
+confidence=
+
+# Enable the message, report, category or checker with the given id(s). You can
+# either give multiple identifier separated by comma (,) or put this option
+# multiple time. See also the "--disable" option for examples.
+#enable=
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once).You can also use "--disable=all" to
+# disable everything first and then reenable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use"--disable=all --enable=classes
+# --disable=W"
+disable=E1604,W1629,W1605,I0020,W1609,W1615,W1610,W1618,W1608,W1622,W1640,E1603,W1635,W1636,W1634,W1628,W1614,E1601,W1601,I0021,E1605,W1611,W1612,W1619,W1616,W1638,W1626,W1630,W1607,E1602,W1623,W1613,W1606,W1625,W0704,W1639,W1603,W1632,E1606,W1602,W1637,W1624,W1620,E1608,W1627,E1607,W1633,W1604,W1617,W1621
+
+
+[REPORTS]
+
+# Set the output format. Available formats are text, parseable, colorized, msvs
+# (visual studio) and html. You can also give a reporter class, eg
+# mypackage.mymodule.MyReporterClass.
+output-format=text
+
+# Put messages in a separate file for each module / package specified on the
+# command line instead of printing them on stdout. Reports (if any) will be
+# written in a file name "pylint_global.[txt|html]".
+files-output=no
+
+# Tells whether to display a full report or only the messages
+reports=yes
+
+# Python expression which should return a note less than 10 (10 is the highest
+# note). You have access to the variables errors warning, statement which
+# respectively contain the number of errors / warnings messages and the total
+# number of statements analyzed. This is used by the global evaluation report
+# (RP0004).
+evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
+
+# Add a comment according to your evaluation note. This is used by the global
+# evaluation report (RP0004).
+comment=no
+
+# Template used to display messages. This is a python new-style format string
+# used to format the message information. See doc for all details.
+# Path/line on separate added to allow IDE to parse error messages and
+# provide interactive link on the place of the error.
+msg-template={path}:{line}:
+    {C}:{msg_id}:{line:3d},{column:2d}: {msg} ({symbol})
+
+
+[LOGGING]
+
+# Logging modules to check that the string format arguments are in logging
+# function parameter format
+logging-modules=logging
+
+
+[FORMAT]
+
+# Maximum number of characters on a single line.
+max-line-length=100
+
+# Regexp for a line that is allowed to be longer than the limit.
+ignore-long-lines=^\s*(# )?<?https?://\S+>?$
+
+# Allow the body of an if to be on the same line as the test if there is no
+# else.
+single-line-if-stmt=no
+
+# List of optional constructs for which whitespace checking is disabled
+no-space-check=trailing-comma,dict-separator
+
+# Maximum number of lines in a module
+max-module-lines=1000
+
+# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1
+# tab).
+indent-string='    '
+
+# Number of spaces of indent required inside a hanging or continued line.
+indent-after-paren=4
+
+# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
+expected-line-ending-format=
+
+
+[MISCELLANEOUS]
+
+# List of note tags to take in consideration, separated by a comma.
+notes=FIXME,XXX,TODO
+
+
+[VARIABLES]
+
+# Tells whether we should check for unused import in __init__ files.
+init-import=no
+
+# A regular expression matching the name of dummy variables (i.e. expectedly
+# not used).
+dummy-variables-rgx=_$|dummy
+
+# List of additional names supposed to be defined in builtins. Remember that
+# you should avoid to define new builtins when possible.
+additional-builtins=
+
+# List of strings which can identify a callback function by name. A callback
+# name must start or end with one of those strings.
+callbacks=cb_,_cb
+
+
+[BASIC]
+
+# Required attributes for module, separated by a comma
+required-attributes=
+
+# List of builtins function names that should not be used, separated by a comma
+bad-functions=map,filter
+
+# Good variable names which should always be accepted, separated by a comma
+good-names=i,j,k,ex,Run,_
+
+# Bad variable names which should always be refused, separated by a comma
+bad-names=foo,bar,baz,toto,tutu,tata
+
+# Colon-delimited sets of names that determine each other's naming style when
+# the name regexes allow several styles.
+name-group=
+
+# Include a hint for the correct naming format with invalid-name
+include-naming-hint=no
+
+# Regular expression matching correct module names
+module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
+
+# Naming hint for module names
+module-name-hint=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
+
+# Regular expression matching correct method names
+method-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for method names
+method-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct class attribute names
+class-attribute-rgx=([A-Za-z_][A-Za-z0-9_]{2,30}|(__.*__))$
+
+# Naming hint for class attribute names
+class-attribute-name-hint=([A-Za-z_][A-Za-z0-9_]{2,30}|(__.*__))$
+
+# Regular expression matching correct class names
+class-rgx=[A-Z_][a-zA-Z0-9]+$
+
+# Naming hint for class names
+class-name-hint=[A-Z_][a-zA-Z0-9]+$
+
+# Regular expression matching correct function names
+function-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for function names
+function-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct inline iteration names
+inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
+
+# Naming hint for inline iteration names
+inlinevar-name-hint=[A-Za-z_][A-Za-z0-9_]*$
+
+# Regular expression matching correct constant names
+const-rgx=(([A-Z_][A-Z0-9_]*)|(__.*__))$
+
+# Naming hint for constant names
+const-name-hint=(([A-Z_][A-Z0-9_]*)|(__.*__))$
+
+# Regular expression matching correct argument names
+argument-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for argument names
+argument-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct attribute names
+attr-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for attribute names
+attr-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct variable names
+variable-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for variable names
+variable-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression which should only match function or class names that do
+# not require a docstring.
+no-docstring-rgx=__.*__
+
+# Minimum line length for functions/classes that require docstrings, shorter
+# ones are exempt.
+docstring-min-length=-1
+
+
+[TYPECHECK]
+
+# Tells whether missing members accessed in mixin class should be ignored. A
+# mixin class is detected if its name ends with "mixin" (case insensitive).
+ignore-mixin-members=yes
+
+# List of module names for which member attributes should not be checked
+# (useful for modules/projects where namespaces are manipulated during runtime
+# and thus existing member attributes cannot be deduced by static analysis
+ignored-modules=
+
+# List of classes names for which member attributes should not be checked
+# (useful for classes with attributes dynamically set).
+ignored-classes=SQLObject
+
+# When zope mode is activated, add a predefined set of Zope acquired attributes
+# to generated-members.
+zope=no
+
+# List of members which are set dynamically and missed by pylint inference
+# system, and so shouldn't trigger E0201 when accessed. Python regular
+# expressions are accepted.
+generated-members=REQUEST,acl_users,aq_parent
+
+
+[SPELLING]
+
+# Spelling dictionary name. Available dictionaries: none. To make it working
+# install python-enchant package.
+spelling-dict=
+
+# List of comma separated words that should not be checked.
+spelling-ignore-words=
+
+# A path to a file that contains private dictionary; one word per line.
+spelling-private-dict-file=
+
+# Tells whether to store unknown words to indicated private dictionary in
+# --spelling-private-dict-file option instead of raising a message.
+spelling-store-unknown-words=no
+
+
+[SIMILARITIES]
+
+# Minimum lines number of a similarity.
+min-similarity-lines=4
+
+# Ignore comments when computing similarities.
+ignore-comments=yes
+
+# Ignore docstrings when computing similarities.
+ignore-docstrings=yes
+
+# Ignore imports when computing similarities.
+ignore-imports=no
+
+
+[IMPORTS]
+
+# Deprecated modules which should not be used, separated by a comma
+deprecated-modules=stringprep,optparse
+
+# Create a graph of every (i.e. internal and external) dependencies in the
+# given file (report RP0402 must not be disabled)
+import-graph=
+
+# Create a graph of external dependencies in the given file (report RP0402 must
+# not be disabled)
+ext-import-graph=
+
+# Create a graph of internal dependencies in the given file (report RP0402 must
+# not be disabled)
+int-import-graph=
+
+
+[CLASSES]
+
+# List of interface methods to ignore, separated by a comma. This is used for
+# instance to not check methods defines in Zope's Interface base class.
+ignore-iface-methods=isImplementedBy,deferred,extends,names,namesAndDescriptions,queryDescriptionFor,getBases,getDescriptionFor,getDoc,getName,getTaggedValue,getTaggedValueTags,isEqualOrExtendedBy,setTaggedValue,isImplementedByInstancesOf,adaptWith,is_implemented_by
+
+# List of method names used to declare (i.e. assign) instance attributes.
+defining-attr-methods=__init__,__new__,setUp
+
+# List of valid names for the first argument in a class method.
+valid-classmethod-first-arg=cls
+
+# List of valid names for the first argument in a metaclass class method.
+valid-metaclass-classmethod-first-arg=mcs
+
+# List of member names, which should be excluded from the protected access
+# warning.
+exclude-protected=_asdict,_fields,_replace,_source,_make
+
+
+[DESIGN]
+
+# Maximum number of arguments for function / method
+max-args=5
+
+# Argument names that match this expression will be ignored. Default to name
+# with leading underscore
+ignored-argument-names=_.*
+
+# Maximum number of locals for function / method body
+max-locals=15
+
+# Maximum number of return / yield for function / method body
+max-returns=6
+
+# Maximum number of branch for function / method body
+max-branches=12
+
+# Maximum number of statements in function / method body
+max-statements=50
+
+# Maximum number of parents for a class (see R0901).
+max-parents=7
+
+# Maximum number of attributes for a class (see R0902).
+max-attributes=7
+
+# Minimum number of public methods for a class (see R0903).
+min-public-methods=2
+
+# Maximum number of public methods for a class (see R0904).
+max-public-methods=20
+
+
+[EXCEPTIONS]
+
+# Exceptions that will emit a warning when being caught. Defaults to
+# "Exception"
+overgeneral-exceptions=Exception

aiohttp_cors/.pyup.yml

@@ -0,0 +1,4 @@
+# Label PRs with `deps-update` label
+label_prs: deps-update
+
+schedule: every week

aiohttp_cors/.travis.yml

@@ -0,0 +1,57 @@
+language: python
+python:
+- 3.5
+- 3.6
+
+# TODO: Use Travis apt addon, when chromium-chromedriver will be supported
+# three: https://github.com/travis-ci/apt-package-whitelist/issues/574
+before_install:
+  - sudo apt-get -qq update
+  - sudo apt-get install -y chromium-browser chromium-chromedriver
+
+install:
+- pip install --upgrade pip setuptools wheel
+- pip install -Ur requirements-dev.txt
+- pip install codecov
+
+before_script:
+  # Start X-server for Selenium tests.
+  - "export DISPLAY=:99.0"
+  - "sh -e /etc/init.d/xvfb start"
+  - sleep 3 # give xvfb some time to start
+
+script:
+- '[ "$TYPE" != "test" ] || python setup.py test --addopts -v --addopts -s'
+- '[ "$TYPE" != "lint" ] || python setup.py check -rms'
+
+after_success:
+  codecov
+
+env:
+  global:
+  - WEBDRIVER_CHROMEDRIVER_PATH=/usr/lib/chromium-browser/chromedriver
+  matrix:
+  # PYTHONASYNCIODEBUG environment variable is considered as enabled if it
+  # is any non empty string.
+  - TYPE=test
+
+matrix:
+  include:
+  # Environment to deploy project on PyPI.
+  - python: "3.5"
+    env: DEPLOY_ENV=1
+
+  - python: "3.5"
+    env: TYPE=lint
+
+# Deploy on PyPI all tagged build on master branch.
+deploy:
+  provider: pypi
+  user: aiohttp-cors-deploy
+  password:
+    secure: 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
+  distributions: sdist bdist_wheel
+  on:
+    tags: true
+    branch: master
+    condition: $DEPLOY_ENV = 1

aiohttp_cors/CHANGES.rst

@@ -0,0 +1,91 @@
+=========
+ CHANGES
+=========
+
+0.7.0 (2018-03-05)
+==================
+
+- Make web view check implicit and type based (#159)
+
+- Disable Python 3.4 support (#156)
+
+- Support aiohttp 3.0+ (#155)
+
+0.6.0 (2017-12-21)
+==================
+
+- Support aiohttp views by ``CorsViewMixin`` (#145)
+
+0.5.3 (2017-04-21)
+==================
+
+- Fix ``typing`` being installed on Python 3.6.
+
+0.5.2 (2017-03-28)
+==================
+
+- Fix tests compatibility with ``aiohttp`` 2.0.
+  This release and release v0.5.0 should work on ``aiohttp`` 2.0.
+
+
+0.5.1 (2017-03-23)
+==================
+
+- Enforce ``aiohttp`` version to be less than 2.0.
+  Newer ``aiohttp`` releases will be supported in the next release.
+
+0.5.0 (2016-11-18)
+==================
+
+- Fix compatibility with ``aiohttp`` 1.1
+
+
+0.4.0 (2016-04-04)
+==================
+
+- Fixed support with new Resources objects introduced in ``aiohttp`` 0.21.0.
+  Minimum supported version of ``aiohttp`` is 0.21.4 now.
+
+- New Resources objects are supported.
+  You can specify default configuration for a Resource and use
+  ``allow_methods`` to explicitly list allowed methods (or ``*`` for all
+  HTTP methods):
+
+  .. code-block:: python
+
+        # Allow POST and PUT requests from "http://client.example.org" origin.
+        hello_resource = cors.add(app.router.add_resource("/hello"), {
+                "http://client.example.org":
+                    aiohttp_cors.ResourceOptions(
+                        allow_methods=["POST", "PUT"]),
+            })
+        # No need to add POST and PUT routes into CORS configuration object.
+        hello_resource.add_route("POST", handler_post)
+        hello_resource.add_route("PUT", handler_put)
+        # Still you can add additional methods to CORS configuration object:
+        cors.add(hello_resource.add_route("DELETE", handler_delete))
+
+- ``AbstractRouterAdapter`` was completely rewritten to be more Router
+  agnostic.
+
+0.3.0 (2016-02-06)
+==================
+
+- Rename ``UrlDistatcherRouterAdapter`` to ``UrlDispatcherRouterAdapter``.
+
+- Set maximum supported ``aiohttp`` version to ``0.20.2``, see bug #30 for
+  details.
+
+0.2.0 (2015-11-30)
+==================
+
+- Move ABCs from ``aiohttp_cors.router_adapter`` to ``aiohttp_cors.abc``.
+
+- Rename ``RouterAdapter`` to ``AbstractRouterAdapter``.
+
+- Fix bug with configuring CORS for named routes.
+
+0.1.0 (2015-11-05)
+==================
+
+* Initial release.

aiohttp_cors/LICENSE

@@ -0,0 +1,202 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+
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+

aiohttp_cors/MANIFEST.in

@@ -0,0 +1,5 @@
+include LICENSE
+include CHANGES.rst
+include README.rst
+recursive-include tests *.py
+include tests/integration/test_page.html

aiohttp_cors/Makefile

@@ -0,0 +1,8 @@
+all: test
+
+
+flake:
+	flake8 aiohttp_cors tests setup.py
+
+test: flake
+	pytest tests

aiohttp_cors/README.rst

@@ -0,0 +1,519 @@
+========================
+CORS support for aiohttp
+========================
+
+``aiohttp_cors`` library implements
+`Cross Origin Resource Sharing (CORS) <cors_>`__
+support for `aiohttp <aiohttp_>`__
+asyncio-powered asynchronous HTTP server.
+
+Jump directly to `Usage`_ part to see how to use ``aiohttp_cors``.
+
+Same-origin policy
+==================
+
+Web security model is tightly connected to
+`Same-origin policy (SOP) <sop_>`__.
+In short: web pages cannot *Read* resources which origin
+doesn't match origin of requested page, but can *Embed* (or *Execute*)
+resources and have limited ability to *Write* resources.
+
+Origin of a page is defined in the `Standard <cors_>`__ as tuple
+``(schema, host, port)``
+(there is a notable exception with Internet Explorer: it doesn't use port to
+define origin, but uses it's own
+`Security Zones <https://msdn.microsoft.com/en-us/library/ms537183.aspx>`__).
+
+Can *Embed* means that resource from other origin can be embedded into
+the page,
+e.g. by using ``<script src="...">``, ``<img src="...">``,
+``<iframe src="...">``.
+
+Cannot *Read* means that resource from other origin *source* cannot be
+obtained by page
+(*source* — any information that would allow to reconstruct resource).
+E.g. the page can *Embed* image with ``<img src="...">``,
+but it can't get information about specific pixels, so page can't reconstruct
+original image
+(though some information from the other resource may still be leaked:
+e.g. the page can read embedded image dimensions).
+
+Limited ability to *Write* means, that the page can send POST requests to
+other origin with limited set of ``Content-Type`` values and headers.
+
+Restriction to *Read* resource from other origin is related to authentication
+mechanism that is used by browsers:
+when browser reads (downloads) resource he automatically sends all security
+credentials that user previously authorized for that resource
+(e.g. cookies, HTTP Basic Authentication).
+
+For example, if *Read* would be allowed and user is authenticated
+in some internet banking,
+malicious page would be able to embed internet banking page with ``iframe``
+(since authentication is done by the browser it may be embedded as if
+user is directly navigated to internet banking page),
+then read user private information by reading *source* of the embedded page
+(which may be not only source code, but, for example,
+screenshot of the embedded internet banking page).
+
+Cross-origin resource sharing
+=============================
+
+`Cross-origin Resource Sharing (CORS) <cors_>`__ allows to override
+SOP for specific resources.
+
+In short, CORS works in the following way.
+
+When page ``https://client.example.com`` request (*Read*) resource
+``https://server.example.com/resource`` that have other origin,
+browser implicitly appends ``Origin: https://client.example.com`` header
+to the HTTP request,
+effectively requesting server to give read permission for
+the resource to the ``https://client.example.com`` page::
+
+    GET /resource HTTP/1.1
+    Origin: https://client.example.com
+    Host: server.example.com
+
+If server allows access from the page to the resource, it responds with
+resource with ``Access-Control-Allow-Origin: https://client.example.com``
+HTTP header
+(optionally allowing exposing custom server headers to the page and
+enabling use of the user credentials on the server resource)::
+
+    Access-Control-Allow-Origin: https://client.example.com
+    Access-Control-Allow-Credentials: true
+    Access-Control-Expose-Headers: X-Server-Header
+
+Browser checks, if server responded with proper
+``Access-Control-Allow-Origin`` header and accordingly allows or denies
+access for the obtained resource to the page.
+
+CORS specification designed in a way that servers that are not aware
+of CORS will not expose any additional information, except allowed by the
+SOP.
+
+To request resources with custom headers or using custom HTTP methods
+(e.g. ``PUT``, ``DELETE``) that are not allowed by SOP,
+CORS-enabled browser first send *preflight request* to the
+resource using ``OPTIONS`` method, in which he queries access to the resource
+with specific method and headers::
+
+    OPTIONS / HTTP/1.1
+    Origin: https://client.example.com
+    Access-Control-Request-Method: PUT
+    Access-Control-Request-Headers: X-Client-Header
+
+CORS-enabled server responds is requested method is allowed and which of
+the specified headers are allowed::
+
+    Access-Control-Allow-Origin: https://client.example.com
+    Access-Control-Allow-Credentials: true
+    Access-Control-Allow-Methods: PUT
+    Access-Control-Allow-Headers: X-Client-Header
+    Access-Control-Max-Age: 3600
+
+Browser checks response to preflight request, and, if actual request allowed,
+does actual request.
+
+Installation
+============
+
+You can install ``aiohttp_cors`` as a typical Python library from PyPI or
+from git:
+
+.. code-block:: bash
+
+    $ pip install aiohttp_cors
+
+Note that ``aiohttp_cors`` requires versions of Python >= 3.4.1 and
+``aiohttp`` >= 1.1.
+
+Usage
+=====
+
+To use ``aiohttp_cors`` you need to configure the application and
+enable CORS on
+`resources and routes <https://aiohttp.readthedocs.org/en/stable/web.html#resources-and-routes>`__
+that you want to expose:
+
+.. code-block:: python
+
+    import asyncio
+    from aiohttp import web
+    import aiohttp_cors
+
+    @asyncio.coroutine
+    def handler(request):
+        return web.Response(
+            text="Hello!",
+            headers={
+                "X-Custom-Server-Header": "Custom data",
+            })
+
+    app = web.Application()
+
+    # `aiohttp_cors.setup` returns `aiohttp_cors.CorsConfig` instance.
+    # The `cors` instance will store CORS configuration for the
+    # application.
+    cors = aiohttp_cors.setup(app)
+
+    # To enable CORS processing for specific route you need to add
+    # that route to the CORS configuration object and specify its
+    # CORS options.
+    resource = cors.add(app.router.add_resource("/hello"))
+    route = cors.add(
+        resource.add_route("GET", handler), {
+            "http://client.example.org": aiohttp_cors.ResourceOptions(
+                allow_credentials=True,
+                expose_headers=("X-Custom-Server-Header",),
+                allow_headers=("X-Requested-With", "Content-Type"),
+                max_age=3600,
+            )
+        })
+
+Each route has it's own CORS configuration passed in ``CorsConfig.add()``
+method.
+
+CORS configuration is a mapping from origins to options for that origins.
+
+In the example above CORS is configured for the resource under path ``/hello``
+and HTTP method ``GET``, and in the context of CORS:
+
+* This resource will be available using CORS only to
+  ``http://client.example.org`` origin.
+
+* Passing of credentials to this resource will be allowed.
+
+* The resource will expose to the client ``X-Custom-Server-Header``
+  server header.
+
+* The client will be allowed to pass ``X-Requested-With`` and
+  ``Content-Type`` headers to the server.
+
+* Preflight requests will be allowed to be cached by client for ``3600``
+  seconds.
+
+Resource will be available only to the explicitly specified origins.
+You can specify "all other origins" using special ``*`` origin:
+
+.. code-block:: python
+
+    cors.add(route, {
+            "*":
+                aiohttp_cors.ResourceOptions(allow_credentials=False),
+            "http://client.example.org":
+                aiohttp_cors.ResourceOptions(allow_credentials=True),
+        })
+
+Here the resource specified by ``route`` will be available to all origins with
+disallowed credentials passing, and with allowed credentials passing only to
+``http://client.example.org``.
+
+By default ``ResourceOptions`` will be constructed without any allowed CORS
+options.
+This means, that resource will be available using CORS to specified origin,
+but client will not be allowed to send either credentials,
+or send non-simple headers, or read from server non-simple headers.
+
+To enable sending or receiving all headers you can specify special value
+``*`` instead of sequence of headers:
+
+.. code-block:: python
+
+    cors.add(route, {
+            "http://client.example.org":
+                aiohttp_cors.ResourceOptions(
+                    expose_headers="*",
+                    allow_headers="*"),
+        })
+
+You can specify default CORS-enabled resource options using
+``aiohttp_cors.setup()``'s ``defaults`` argument:
+
+.. code-block:: python
+
+    cors = aiohttp_cors.setup(app, defaults={
+            # Allow all to read all CORS-enabled resources from
+            # http://client.example.org.
+            "http://client.example.org": aiohttp_cors.ResourceOptions(),
+        })
+
+    # Enable CORS on routes.
+
+    # According to defaults POST and PUT will be available only to
+    # "http://client.example.org".
+    hello_resource = cors.add(app.router.add_resource("/hello"))
+    cors.add(hello_resource.add_route("POST", handler_post))
+    cors.add(hello_resource.add_route("PUT", handler_put))
+
+    # In addition to "http://client.example.org", GET request will be
+    # allowed from "http://other-client.example.org" origin.
+    cors.add(hello_resource.add_route("GET", handler), {
+            "http://other-client.example.org":
+                aiohttp_cors.ResourceOptions(),
+        })
+
+    # CORS will be enabled only on the resources added to `CorsConfig`,
+    # so following resource will be NOT CORS-enabled.
+    app.router.add_route("GET", "/private", handler)
+
+Also you can specify default options for resources:
+
+.. code-block:: python
+
+    # Allow POST and PUT requests from "http://client.example.org" origin.
+    hello_resource = cors.add(app.router.add_resource("/hello"), {
+            "http://client.example.org": aiohttp_cors.ResourceOptions(),
+        })
+    cors.add(hello_resource.add_route("POST", handler_post))
+    cors.add(hello_resource.add_route("PUT", handler_put))
+
+Resource CORS configuration allows to use ``allow_methods`` option that
+explicitly specifies list of allowed HTTP methods for origin
+(or ``*`` for all HTTP methods).
+By using this option it is not required to add all resource routes to
+CORS configuration object:
+
+.. code-block:: python
+
+    # Allow POST and PUT requests from "http://client.example.org" origin.
+    hello_resource = cors.add(app.router.add_resource("/hello"), {
+            "http://client.example.org":
+                aiohttp_cors.ResourceOptions(allow_methods=["POST", "PUT"]),
+        })
+    # No need to add POST and PUT routes into CORS configuration object.
+    hello_resource.add_route("POST", handler_post)
+    hello_resource.add_route("PUT", handler_put)
+    # Still you can add additional methods to CORS configuration object:
+    cors.add(hello_resource.add_route("DELETE", handler_delete))
+
+Here is an example of how to enable CORS for all origins with all CORS
+features:
+
+.. code-block:: python
+
+    cors = aiohttp_cors.setup(app, defaults={
+        "*": aiohttp_cors.ResourceOptions(
+                allow_credentials=True,
+                expose_headers="*",
+                allow_headers="*",
+            )
+    })
+
+    # Add all resources to `CorsConfig`.
+    resource = cors.add(app.router.add_resource("/hello"))
+    cors.add(resource.add_route("GET", handler_get))
+    cors.add(resource.add_route("PUT", handler_put))
+    cors.add(resource.add_route("POST", handler_put))
+    cors.add(resource.add_route("DELETE", handler_delete))
+
+Old routes API is supported — you can use ``router.add_router`` and
+``router.register_route`` as before, though this usage is discouraged:
+
+.. code-block:: python
+
+    cors.add(
+        app.router.add_route("GET", "/hello", handler), {
+            "http://client.example.org": aiohttp_cors.ResourceOptions(
+                allow_credentials=True,
+                expose_headers=("X-Custom-Server-Header",),
+                allow_headers=("X-Requested-With", "Content-Type"),
+                max_age=3600,
+            )
+        })
+
+You can enable CORS for all added routes by accessing routes list
+in the router:
+
+.. code-block:: python
+
+    # Setup application routes.
+    app.router.add_route("GET", "/hello", handler_get)
+    app.router.add_route("PUT", "/hello", handler_put)
+    app.router.add_route("POST", "/hello", handler_put)
+    app.router.add_route("DELETE", "/hello", handler_delete)
+
+    # Configure default CORS settings.
+    cors = aiohttp_cors.setup(app, defaults={
+        "*": aiohttp_cors.ResourceOptions(
+                allow_credentials=True,
+                expose_headers="*",
+                allow_headers="*",
+            )
+    })
+
+    # Configure CORS on all routes.
+    for route in list(app.router.routes()):
+        cors.add(route)
+
+You can also use ``CorsViewMixin`` on ``web.View``:
+
+.. code-block:: python
+
+    class CorsView(web.View, CorsViewMixin):
+
+        cors_config = {
+            "*": ResourceOption(
+                allow_credentials=True,
+                allow_headers="X-Request-ID",
+            )
+        }
+
+        @asyncio.coroutine
+        def get(self):
+            return web.Response(text="Done")
+
+        @custom_cors({
+            "*": ResourceOption(
+                allow_credentials=True,
+                allow_headers="*",
+            )
+        })
+        @asyncio.coroutine
+        def post(self):
+            return web.Response(text="Done")
+
+    cors = aiohttp_cors.setup(app, defaults={
+        "*": aiohttp_cors.ResourceOptions(
+                allow_credentials=True,
+                expose_headers="*",
+                allow_headers="*",
+            )
+    })
+
+    cors.add(
+        app.router.add_route("*", "/resource", CorsView),
+        webview=True)
+
+
+Security
+========
+
+TODO: fill this
+
+Development
+===========
+
+To setup development environment:
+
+.. code-block:: bash
+
+   # Clone sources repository:
+   git clone https://github.com/aio-libs/aiohttp_cors.git .
+   # Create and activate virtual Python environment:
+   python3 -m venv env
+   source env/bin/activate
+   # Install requirements and aiohttp_cors into virtual environment
+   pip install -r requirements-dev.txt
+
+To run tests:
+
+.. code-block:: bash
+
+   tox
+
+To run only runtime tests in current environment:
+
+.. code-block:: bash
+
+   py.test
+
+To run only static code analysis checks:
+
+.. code-block:: bash
+
+   tox -e check
+
+Running Selenium tests
+----------------------
+
+To run Selenium tests with Firefox web driver you need to install Firefox.
+
+To run Selenium tests with Chromium web driver you need to:
+
+1. Install Chrome driver. On Ubuntu 14.04 it's in ``chromium-chromedriver``
+   package.
+
+2. Either add ``chromedriver`` to PATH or set ``WEBDRIVER_CHROMEDRIVER_PATH``
+   environment variable to ``chromedriver``, e.g. on Ubuntu 14.04
+   ``WEBDRIVER_CHROMEDRIVER_PATH=/usr/lib/chromium-browser/chromedriver``.
+
+Release process
+---------------
+
+To release version ``vA.B.C`` from the current version of ``master`` branch
+you need to:
+
+1. Create local branch ``vA.B.C``.
+2. In ``CHANGES.rst`` set release date to today.
+3. In ``aiohttp_cors/__about__.py`` change version from ``A.B.Ca0`` to
+   ``A.B.C``.
+4. Create pull request with ``vA.B.C`` branch, wait for all checks to
+   successfully finish (Travis and Appveyor).
+5. Merge pull request to master.
+6. Update and checkout ``master`` branch.
+
+7. Create and push tag for release version to GitHub:
+
+   .. code-block:: bash
+
+      git tag vA.B.C
+      git push --tags
+
+   Now Travis should ran tests again, and build and deploy wheel on PyPI.
+
+   If Travis release doesn't work for some reason, use following steps
+   for manual release upload.
+
+   1. Install fresh versions of setuptools and pip.
+      Install ``wheel`` for building wheels.
+      Install ``twine`` for uploading to PyPI.
+
+      .. code-block:: bash
+
+         pip install -U pip setuptools twine wheel
+
+   2. Configure PyPI credentials in ``~/.pypirc``.
+
+   3. Build distribution:
+
+      .. code-block:: bash
+
+         rm -rf build dist; python setup.py sdist bdist_wheel
+
+   4. Upload new release to PyPI:
+
+      .. code-block:: bash
+
+         twine upload dist/*
+
+8. Edit release description on GitHub if needed.
+9. Announce new release on the *aio-libs* mailing list:
+   https://groups.google.com/forum/#!forum/aio-libs.
+
+Post release steps:
+
+1. In ``CHANGES.rst`` add template for the next release.
+2. In ``aiohttp_cors/__about__.py`` change version from ``A.B.C`` to
+   ``A.(B + 1).0a0``.
+
+Bugs
+====
+
+Please report bugs, issues, feature requests, etc. on
+`GitHub <https://github.com/aio-libs/aiohttp_cors/issues>`__.
+
+
+License
+=======
+
+Copyright 2015 Vladimir Rutsky <[email protected]>.
+
+Licensed under the
+`Apache License, Version 2.0 <https://www.apache.org/licenses/LICENSE-2.0>`__,
+see ``LICENSE`` file for details.
+
+.. _cors: http://www.w3.org/TR/cors/
+.. _aiohttp: https://github.com/KeepSafe/aiohttp/
+.. _sop: https://en.wikipedia.org/wiki/Same-origin_policy

aiohttp_cors/aiohttp_cors/__about__.py

@@ -0,0 +1,28 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Library meta information.
+
+This module must be stand-alone executable.
+"""
+
+__title__ = "aiohttp-cors"
+__version__ = "0.7.0"
+__author__ = "Vladimir Rutsky and aio-libs team"
+__email__ = "[email protected]"
+__summary__ = "CORS support for aiohttp"
+__uri__ = "https://github.com/aio-libs/aiohttp-cors"
+__license__ = "Apache License, Version 2.0"
+__copyright__ = "2015-2018 {}".format(__author__)

aiohttp_cors/aiohttp_cors/__init__.py

@@ -0,0 +1,67 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""CORS support for aiohttp.
+"""
+
+from typing import Mapping, Union, Any
+
+from aiohttp import web
+
+from .__about__ import (
+    __title__, __version__, __author__, __email__, __summary__, __uri__,
+    __license__, __copyright__,
+)
+from .resource_options import ResourceOptions
+from .cors_config import CorsConfig
+from .mixin import CorsViewMixin, custom_cors
+
+__all__ = (
+    "__title__", "__version__", "__author__", "__email__", "__summary__",
+    "__uri__", "__license__", "__copyright__",
+    "setup", "CorsConfig", "ResourceOptions", "CorsViewMixin", "custom_cors"
+)
+
+
+APP_CONFIG_KEY = "aiohttp_cors"
+
+
+def setup(app: web.Application, *,
+          defaults: Mapping[str, Union[ResourceOptions,
+                                       Mapping[str, Any]]]=None) -> CorsConfig:
+    """Setup CORS processing for the application.
+
+    To enable CORS for a resource you need to explicitly add route for
+    that resource using `CorsConfig.add()` method::
+
+        app = aiohttp.web.Application()
+        cors = aiohttp_cors.setup(app)
+        cors.add(
+            app.router.add_route("GET", "/resource", handler),
+            {
+                "*": aiohttp_cors.ResourceOptions(
+                    allow_credentials=True,
+                    expose_headers="*",
+                    allow_headers="*"),
+            })
+
+    :param app:
+        The application for which CORS will be configured.
+    :param defaults:
+        Default settings for origins.
+    )
+    """
+    cors = CorsConfig(app, defaults=defaults)
+    app[APP_CONFIG_KEY] = cors
+    return cors

aiohttp_cors/aiohttp_cors/abc.py

@@ -0,0 +1,100 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Abstract base classes.
+"""
+
+from abc import ABCMeta, abstractmethod
+
+from aiohttp import web
+
+
+__all__ = ("AbstractRouterAdapter",)
+
+
+class AbstractRouterAdapter(metaclass=ABCMeta):
+    """Router adapter for handling CORS configuration interface.
+
+    `AbstractRouter` doesn't specify how HTTP requests are delivered
+    to handlers, and aiohttp_cors doesn't rely on specific implementation
+    details.
+
+    In general Router can be seen as a substance that allows to setup handlers
+    for specific HTTP methods and requests paths, lets call these Router's
+    items routing entities.
+    Generic Router is configured with set of routing entities and their
+    handlers.
+
+    This adapter assumes that its reasonable to configure CORS for same
+    routing entities as used in `AbstractRouter`.
+    Routing entities will be added to CorsConfig to enable CORS for them.
+
+    For example, for aiohttp < 0.21.0 routing entity would be
+    `aiohttp.web.Route` — tuple of (HTTP method, URI path).
+    And CORS can be configured for each `aiohttp.web.Route`.
+
+    In aiohttp >= 0.21.0 there are two routing entities: Resource and Route.
+    You can configure CORS for Resource (which will be interpreted as default
+    for all Routes on Resoures), and configure CORS for specific Route.
+    """
+
+    @abstractmethod
+    def add_preflight_handler(self,
+                              routing_entity,
+                              handler,
+                              webview: bool=False):
+        """Add OPTIONS handler for all routes defined by `routing_entity`.
+
+        Does nothing if CORS handler already handles routing entity.
+        Should fail if there are conflicting user-defined OPTIONS handlers.
+        """
+
+    @abstractmethod
+    def is_preflight_request(self, request: web.Request) -> bool:
+        """Is `request` is a CORS preflight request."""
+
+    @abstractmethod
+    def is_cors_enabled_on_request(self, request: web.Request) -> bool:
+        """Is `request` is a request for CORS-enabled resource."""
+
+    @abstractmethod
+    def set_config_for_routing_entity(self,
+                                      routing_entity,
+                                      config):
+        """Record configuration for routing entity.
+
+        If router implements hierarchical routing entities, stored config
+        can be used in hierarchical manner too.
+
+        Should raise if there is conflicting configuration for the routing
+        entity.
+        """
+
+    @abstractmethod
+    async def get_preflight_request_config(
+            self,
+            preflight_request: web.Request,
+            origin: str,
+            requested_method: str):
+        """Get stored CORS configuration for specified HTTP method and origin
+        that corresponds to preflight request.
+
+        Should raise KeyError if CORS is not configured or not enabled
+        for specified HTTP method.
+        """
+
+    @abstractmethod
+    def get_non_preflight_request_config(self, request: web.Request):
+        """Get stored CORS configuration for routing entity that handles
+        specified request."""

aiohttp_cors/aiohttp_cors/cors_config.py

@@ -0,0 +1,263 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""CORS configuration container class definition.
+"""
+
+import collections
+import warnings
+from typing import Mapping, Union, Any
+
+from aiohttp import hdrs, web
+
+from .urldispatcher_router_adapter import ResourcesUrlDispatcherRouterAdapter
+from .abc import AbstractRouterAdapter
+from .resource_options import ResourceOptions
+from .preflight_handler import _PreflightHandler
+
+__all__ = (
+    "CorsConfig",
+)
+
+# Positive response to Access-Control-Allow-Credentials
+_TRUE = "true"
+# CORS simple response headers:
+# <http://www.w3.org/TR/cors/#simple-response-header>
+_SIMPLE_RESPONSE_HEADERS = frozenset([
+    hdrs.CACHE_CONTROL,
+    hdrs.CONTENT_LANGUAGE,
+    hdrs.CONTENT_TYPE,
+    hdrs.EXPIRES,
+    hdrs.LAST_MODIFIED,
+    hdrs.PRAGMA
+])
+
+
+def _parse_config_options(
+        config: Mapping[str, Union[ResourceOptions, Mapping[str, Any]]]=None):
+    """Parse CORS configuration (default or per-route)
+
+    :param config:
+        Mapping from Origin to Resource configuration (allowed headers etc)
+        defined either as mapping or `ResourceOptions` instance.
+
+    Raises `ValueError` if configuration is not correct.
+    """
+
+    if config is None:
+        return {}
+
+    if not isinstance(config, collections.abc.Mapping):
+        raise ValueError(
+            "Config must be mapping, got '{}'".format(config))
+
+    parsed = {}
+
+    options_keys = {
+        "allow_credentials", "expose_headers", "allow_headers", "max_age"
+    }
+
+    for origin, options in config.items():
+        # TODO: check that all origins are properly formatted.
+        # This is not a security issue, since origin is compared as strings.
+        if not isinstance(origin, str):
+            raise ValueError(
+                "Origin must be string, got '{}'".format(origin))
+
+        if isinstance(options, ResourceOptions):
+            resource_options = options
+
+        else:
+            if not isinstance(options, collections.abc.Mapping):
+                raise ValueError(
+                    "Origin options must be either "
+                    "aiohttp_cors.ResourceOptions instance or mapping, "
+                    "got '{}'".format(options))
+
+            unexpected_args = frozenset(options.keys()) - options_keys
+            if unexpected_args:
+                raise ValueError(
+                    "Unexpected keywords in resource options: {}".format(
+                        # pylint: disable=bad-builtin
+                        ",".join(map(str, unexpected_args))))
+
+            resource_options = ResourceOptions(**options)
+
+        parsed[origin] = resource_options
+
+    return parsed
+
+
+_ConfigType = Mapping[str, Union[ResourceOptions, Mapping[str, Any]]]
+
+
+class _CorsConfigImpl(_PreflightHandler):
+
+    def __init__(self,
+                 app: web.Application,
+                 router_adapter: AbstractRouterAdapter):
+        self._app = app
+
+        self._router_adapter = router_adapter
+
+        # Register hook for all responses.  This hook handles CORS-related
+        # headers on non-preflight requests.
+        self._app.on_response_prepare.append(self._on_response_prepare)
+
+    def add(self,
+            routing_entity,
+            config: _ConfigType=None):
+        """Enable CORS for specific route or resource.
+
+        If route is passed CORS is enabled for route's resource.
+
+        :param routing_entity:
+            Route or Resource for which CORS should be enabled.
+        :param config:
+            CORS options for the route.
+        :return: `routing_entity`.
+        """
+
+        parsed_config = _parse_config_options(config)
+
+        self._router_adapter.add_preflight_handler(
+            routing_entity, self._preflight_handler)
+        self._router_adapter.set_config_for_routing_entity(
+            routing_entity, parsed_config)
+
+        return routing_entity
+
+    async def _on_response_prepare(self,
+                                   request: web.Request,
+                                   response: web.StreamResponse):
+        """Non-preflight CORS request response processor.
+
+        If request is done on CORS-enabled route, process request parameters
+        and set appropriate CORS response headers.
+        """
+        if (not self._router_adapter.is_cors_enabled_on_request(request) or
+                self._router_adapter.is_preflight_request(request)):
+            # Either not CORS enabled route, or preflight request which is
+            # handled in its own handler.
+            return
+
+        # Processing response of non-preflight CORS-enabled request.
+
+        config = self._router_adapter.get_non_preflight_request_config(request)
+
+        # Handle according to part 6.1 of the CORS specification.
+
+        origin = request.headers.get(hdrs.ORIGIN)
+        if origin is None:
+            # Terminate CORS according to CORS 6.1.1.
+            return
+
+        options = config.get(origin, config.get("*"))
+        if options is None:
+            # Terminate CORS according to CORS 6.1.2.
+            return
+
+        assert hdrs.ACCESS_CONTROL_ALLOW_ORIGIN not in response.headers
+        assert hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS not in response.headers
+        assert hdrs.ACCESS_CONTROL_EXPOSE_HEADERS not in response.headers
+
+        # Process according to CORS 6.1.4.
+        # Set exposed headers (server headers exposed to client) before
+        # setting any other headers.
+        if options.expose_headers == "*":
+            # Expose all headers that are set in response.
+            exposed_headers = \
+                frozenset(response.headers.keys()) - _SIMPLE_RESPONSE_HEADERS
+            response.headers[hdrs.ACCESS_CONTROL_EXPOSE_HEADERS] = \
+                ",".join(exposed_headers)
+
+        elif options.expose_headers:
+            # Expose predefined list of headers.
+            response.headers[hdrs.ACCESS_CONTROL_EXPOSE_HEADERS] = \
+                ",".join(options.expose_headers)
+
+        # Process according to CORS 6.1.3.
+        # Set allowed origin.
+        response.headers[hdrs.ACCESS_CONTROL_ALLOW_ORIGIN] = origin
+        if options.allow_credentials:
+            # Set allowed credentials.
+            response.headers[hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS] = _TRUE
+
+    async def _get_config(self, request, origin, request_method):
+        config = \
+            await self._router_adapter.get_preflight_request_config(
+                request, origin, request_method)
+        return config
+
+
+class CorsConfig:
+    """CORS configuration instance.
+
+    The instance holds default CORS parameters and per-route options specified
+    in `add()` method.
+
+    Each `aiohttp.web.Application` can have exactly one instance of this class.
+    """
+
+    def __init__(self, app: web.Application, *,
+                 defaults: _ConfigType=None,
+                 router_adapter: AbstractRouterAdapter=None):
+        """Construct CORS configuration.
+
+        :param app:
+            Application for which CORS configuration is built.
+        :param defaults:
+            Default CORS settings for origins.
+        :param router_adapter:
+            Router adapter. Required if application uses non-default router.
+        """
+
+        self.defaults = _parse_config_options(defaults)
+
+        self._cors_impl = None
+
+        self._resources_router_adapter = None
+        self._resources_cors_impl = None
+
+        self._old_routes_cors_impl = None
+
+        if router_adapter is None:
+            router_adapter = \
+                ResourcesUrlDispatcherRouterAdapter(app.router, self.defaults)
+
+        self._cors_impl = _CorsConfigImpl(app, router_adapter)
+
+    def add(self,
+            routing_entity,
+            config: _ConfigType = None,
+            webview: bool=False):
+        """Enable CORS for specific route or resource.
+
+        If route is passed CORS is enabled for route's resource.
+
+        :param routing_entity:
+            Route or Resource for which CORS should be enabled.
+        :param config:
+            CORS options for the route.
+        :return: `routing_entity`.
+        """
+
+        if webview:
+            warnings.warn('webview argument is deprecated, '
+                          'views are handled authomatically without '
+                          'extra settings',
+                          DeprecationWarning,
+                          stacklevel=2)
+
+        return self._cors_impl.add(routing_entity, config)

aiohttp_cors/aiohttp_cors/mixin.py

@@ -0,0 +1,47 @@
+import collections
+
+from .preflight_handler import _PreflightHandler
+
+
+def custom_cors(config):
+    def wrapper(function):
+        name = "{}_cors_config".format(function.__name__)
+        setattr(function, name, config)
+        return function
+    return wrapper
+
+
+class CorsViewMixin(_PreflightHandler):
+    cors_config = None
+
+    @classmethod
+    def get_request_config(cls, request, request_method):
+        try:
+            from . import APP_CONFIG_KEY
+            cors = request.app[APP_CONFIG_KEY]
+        except KeyError:
+            raise ValueError("aiohttp-cors is not configured.")
+
+        method = getattr(cls, request_method.lower(), None)
+
+        if not method:
+            raise KeyError()
+
+        config_property_key = "{}_cors_config".format(request_method.lower())
+
+        custom_config = getattr(method, config_property_key, None)
+        if not custom_config:
+            custom_config = {}
+
+        class_config = cls.cors_config
+        if not class_config:
+            class_config = {}
+
+        return collections.ChainMap(custom_config, class_config, cors.defaults)
+
+    async def _get_config(self, request, origin, request_method):
+        return self.get_request_config(request, request_method)
+
+    async def options(self):
+        response = await self._preflight_handler(self.request)
+        return response

aiohttp_cors/aiohttp_cors/preflight_handler.py

@@ -0,0 +1,130 @@
+from aiohttp import hdrs, web
+
+# Positive response to Access-Control-Allow-Credentials
+_TRUE = "true"
+
+
+class _PreflightHandler:
+
+    @staticmethod
+    def _parse_request_method(request: web.Request):
+        """Parse Access-Control-Request-Method header of the preflight request
+        """
+        method = request.headers.get(hdrs.ACCESS_CONTROL_REQUEST_METHOD)
+        if method is None:
+            raise web.HTTPForbidden(
+                text="CORS preflight request failed: "
+                     "'Access-Control-Request-Method' header is not specified")
+
+        # FIXME: validate method string (ABNF: method = token), if parsing
+        # fails, raise HTTPForbidden.
+
+        return method
+
+    @staticmethod
+    def _parse_request_headers(request: web.Request):
+        """Parse Access-Control-Request-Headers header or the preflight request
+
+        Returns set of headers in upper case.
+        """
+        headers = request.headers.get(hdrs.ACCESS_CONTROL_REQUEST_HEADERS)
+        if headers is None:
+            return frozenset()
+
+        # FIXME: validate each header string, if parsing fails, raise
+        # HTTPForbidden.
+        # FIXME: check, that headers split and stripped correctly (according
+        # to ABNF).
+        headers = (h.strip(" \t").upper() for h in headers.split(","))
+        # pylint: disable=bad-builtin
+        return frozenset(filter(None, headers))
+
+    async def _get_config(self, request, origin, request_method):
+        raise NotImplementedError()
+
+    async def _preflight_handler(self, request: web.Request):
+        """CORS preflight request handler"""
+
+        # Handle according to part 6.2 of the CORS specification.
+
+        origin = request.headers.get(hdrs.ORIGIN)
+        if origin is None:
+            # Terminate CORS according to CORS 6.2.1.
+            raise web.HTTPForbidden(
+                text="CORS preflight request failed: "
+                     "origin header is not specified in the request")
+
+        # CORS 6.2.3. Doing it out of order is not an error.
+        request_method = self._parse_request_method(request)
+
+        # CORS 6.2.5. Doing it out of order is not an error.
+
+        try:
+            config = \
+                await self._get_config(request, origin, request_method)
+        except KeyError:
+            raise web.HTTPForbidden(
+                text="CORS preflight request failed: "
+                     "request method {!r} is not allowed "
+                     "for {!r} origin".format(request_method, origin))
+
+        if not config:
+            # No allowed origins for the route.
+            # Terminate CORS according to CORS 6.2.1.
+            raise web.HTTPForbidden(
+                text="CORS preflight request failed: "
+                     "no origins are allowed")
+
+        options = config.get(origin, config.get("*"))
+        if options is None:
+            # No configuration for the origin - deny.
+            # Terminate CORS according to CORS 6.2.2.
+            raise web.HTTPForbidden(
+                text="CORS preflight request failed: "
+                     "origin '{}' is not allowed".format(origin))
+
+        # CORS 6.2.4
+        request_headers = self._parse_request_headers(request)
+
+        # CORS 6.2.6
+        if options.allow_headers == "*":
+            pass
+        else:
+            disallowed_headers = request_headers - options.allow_headers
+            if disallowed_headers:
+                raise web.HTTPForbidden(
+                    text="CORS preflight request failed: "
+                         "headers are not allowed: {}".format(
+                             ", ".join(disallowed_headers)))
+
+        # Ok, CORS actual request with specified in the preflight request
+        # parameters is allowed.
+        # Set appropriate headers and return 200 response.
+
+        response = web.Response()
+
+        # CORS 6.2.7
+        response.headers[hdrs.ACCESS_CONTROL_ALLOW_ORIGIN] = origin
+        if options.allow_credentials:
+            # Set allowed credentials.
+            response.headers[hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS] = _TRUE
+
+        # CORS 6.2.8
+        if options.max_age is not None:
+            response.headers[hdrs.ACCESS_CONTROL_MAX_AGE] = \
+                str(options.max_age)
+
+        # CORS 6.2.9
+        # TODO: more optimal for client preflight request cache would be to
+        # respond with ALL allowed methods.
+        response.headers[hdrs.ACCESS_CONTROL_ALLOW_METHODS] = request_method
+
+        # CORS 6.2.10
+        if request_headers:
+            # Note: case of the headers in the request is changed, but this
+            # shouldn't be a problem, since the headers should be compared in
+            # the case-insensitive way.
+            response.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS] = \
+                ",".join(request_headers)
+
+        return response

aiohttp_cors/aiohttp_cors/resource_options.py

@@ -0,0 +1,153 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Resource CORS options class definition.
+"""
+
+import numbers
+import collections
+import collections.abc
+
+__all__ = ("ResourceOptions",)
+
+
+def _is_proper_sequence(seq):
+    """Returns is seq is sequence and not string."""
+    return (isinstance(seq, collections.abc.Sequence) and
+            not isinstance(seq, str))
+
+
+class ResourceOptions(collections.namedtuple(
+        "Base",
+        ("allow_credentials", "expose_headers", "allow_headers", "max_age",
+         "allow_methods"))):
+    """Resource CORS options."""
+
+    __slots__ = ()
+
+    def __init__(self, *, allow_credentials=False, expose_headers=(),
+                 allow_headers=(), max_age=None, allow_methods=None):
+        """Construct resource CORS options.
+
+        Options will be normalized.
+
+        :param allow_credentials:
+            Is passing client credentials to the resource from other origin
+            is allowed.
+            See <http://www.w3.org/TR/cors/#user-credentials> for
+            the definition.
+        :type allow_credentials: bool
+            Is passing client credentials to the resource from other origin
+            is allowed.
+
+        :param expose_headers:
+            Server headers that are allowed to be exposed to the client.
+            Simple response headers are excluded from this set, see
+            <http://www.w3.org/TR/cors/#list-of-exposed-headers>.
+        :type expose_headers: sequence of strings or ``*`` string.
+
+        :param allow_headers:
+            Client headers that are allowed to be passed to the resource.
+            See <http://www.w3.org/TR/cors/#list-of-headers>.
+        :type allow_headers: sequence of strings or ``*`` string.
+
+        :param max_age:
+            How long the results of a preflight request can be cached in a
+            preflight result cache (in seconds).
+            See <http://www.w3.org/TR/cors/#http-access-control-max-age>.
+
+        :param allow_methods:
+            List of allowed methods or ``*``string. Can be used in resource or
+            global defaults, but not in specific route.
+
+            It's not required to specify all allowed methods for specific
+            resource, routes that have explicit CORS configuration will be
+            treated as if their methods are allowed.
+        """
+        super().__init__()
+
+    def __new__(cls, *, allow_credentials=False, expose_headers=(),
+                allow_headers=(), max_age=None, allow_methods=None):
+        """Normalize source parameters and store them in namedtuple."""
+
+        if not isinstance(allow_credentials, bool):
+            raise ValueError(
+                "'allow_credentials' must be boolean, "
+                "got '{!r}'".format(allow_credentials))
+        _allow_credentials = allow_credentials
+
+        # `expose_headers` is either "*", or sequence of strings.
+        if expose_headers == "*":
+            _expose_headers = expose_headers
+        elif not _is_proper_sequence(expose_headers):
+            raise ValueError(
+                "'expose_headers' must be either '*', or sequence of strings, "
+                "got '{!r}'".format(expose_headers))
+        elif expose_headers:
+            # "Access-Control-Expose-Headers" ":" #field-name
+            # TODO: Check that headers are valid.
+            # TODO: Remove headers that in the _SIMPLE_RESPONSE_HEADERS set
+            # according to
+            # <http://www.w3.org/TR/cors/#list-of-exposed-headers>.
+            _expose_headers = frozenset(expose_headers)
+        else:
+            # No headers exposed.
+            _expose_headers = frozenset()
+
+        # `allow_headers` is either "*", or set of headers in upper case.
+        if allow_headers == "*":
+            _allow_headers = allow_headers
+        elif not _is_proper_sequence(allow_headers):
+            raise ValueError(
+                "'allow_headers' must be either '*', or sequence of strings, "
+                "got '{!r}'".format(allow_headers))
+        else:
+            # TODO: Check that headers are valid.
+            _allow_headers = frozenset(h.upper() for h in allow_headers)
+
+        if max_age is None:
+            _max_age = None
+        else:
+            if not isinstance(max_age, numbers.Integral) or max_age < 0:
+                raise ValueError(
+                    "'max_age' must be non-negative integer, "
+                    "got '{!r}'".format(max_age))
+            _max_age = max_age
+
+        if allow_methods is None or allow_methods == "*":
+            _allow_methods = allow_methods
+        elif not _is_proper_sequence(allow_methods):
+            raise ValueError(
+                "'allow_methods' must be either '*', or sequence of strings, "
+                "got '{!r}'".format(allow_methods))
+        else:
+            # TODO: Check that methods are valid.
+            _allow_methods = frozenset(m.upper() for m in allow_methods)
+
+        return super().__new__(
+            cls,
+            allow_credentials=_allow_credentials,
+            expose_headers=_expose_headers,
+            allow_headers=_allow_headers,
+            max_age=_max_age,
+            allow_methods=_allow_methods)
+
+    def is_method_allowed(self, method):
+        if self.allow_methods is None:
+            return False
+
+        if self.allow_methods == '*':
+            return True
+
+        return method.upper() in self.allow_methods

aiohttp_cors/aiohttp_cors/urldispatcher_router_adapter.py

@@ -0,0 +1,324 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""AbstractRouterAdapter for aiohttp.web.UrlDispatcher.
+"""
+import collections
+
+from typing import Union
+
+from aiohttp import web
+from aiohttp import hdrs
+
+from .abc import AbstractRouterAdapter
+from .mixin import CorsViewMixin
+
+
+# There several usage patterns of routes which should be handled
+# differently.
+#
+# 1. Using new Resources:
+#
+#     resource = app.router.add_resource(path)
+#     cors.add(resource, resource_defaults=...)
+#     cors.add(resource.add_route(method1, handler1), config=...)
+#     cors.add(resource.add_route(method2, handler2), config=...)
+#     cors.add(resource.add_route(method3, handler3), config=...)
+#
+# Here all related Routes (i.e. routes with the same path) are in
+# a single Resource.
+#
+# 2. Using `router.add_static()`:
+#
+#     route1 = app.router.add_static(
+#         "/images", "/usr/share/app/images/")
+#     cors.add(route1, config=...)
+#
+# Here old-style `web.StaticRoute` is created and wrapped with
+# `web.ResourceAdapter`.
+#
+# 3. Using old `router.add_route()`:
+#
+#     cors.add(app.router.add_route(method1, path, hand1), config=...)
+#     cors.add(app.router.add_route(method2, path, hand2), config=...)
+#     cors.add(app.router.add_route(method3, path, hand3), config=...)
+#
+# This creates three Resources with single Route in each.
+#
+# 4. Using deprecated `register_route` with manually created
+#    `web.Route`:
+#
+#     route1 = RouteSubclass(...)
+#     app.router.register_route(route1)
+#     cors.add(route1, config=...)
+#
+# Here old-style route is wrapped with `web.ResourceAdapter`.
+#
+# Preflight requests is roughly an OPTIONS request with query
+# "is specific HTTP method is allowed".
+# In order to properly handle preflight request we need to know which
+# routes have enabled CORS on the request path and CORS configuration
+# for requested HTTP method.
+#
+# In case of new usage pattern it's simple: we need to take a look at
+# self._resource_config[resource][method] for the processing resource.
+#
+# In case of old usage pattern we need to iterate over routes with
+# enabled CORS and check is requested path and HTTP method is accepted
+# by a route.
+
+
+class _ResourceConfig:
+    def __init__(self, default_config):
+        # Resource default config.
+        self.default_config = default_config
+
+        # HTTP method to route configuration.
+        self.method_config = {}
+
+
+def _is_web_view(entity, strict=True):
+    webview = False
+    if isinstance(entity, web.AbstractRoute):
+        handler = entity.handler
+        if isinstance(handler, type) and issubclass(handler, web.View):
+            webview = True
+            if not issubclass(handler, CorsViewMixin):
+                if strict:
+                    raise ValueError("web view should be derived from "
+                                     "aiohttp_cors.CorsViewMixin for working "
+                                     "with the library")
+                else:
+                    return False
+    return webview
+
+
+class ResourcesUrlDispatcherRouterAdapter(AbstractRouterAdapter):
+    """Adapter for `UrlDispatcher` for Resources-based routing only.
+
+    Should be used with routes added in the following way:
+
+        resource = app.router.add_resource(path)
+        cors.add(resource, resource_defaults=...)
+        cors.add(resource.add_route(method1, handler1), config=...)
+        cors.add(resource.add_route(method2, handler2), config=...)
+        cors.add(resource.add_route(method3, handler3), config=...)
+    """
+
+    def __init__(self,
+                 router: web.UrlDispatcher,
+                 defaults):
+        """
+        :param defaults:
+            Default CORS configuration.
+        """
+        self._router = router
+
+        # Default configuration for all routes.
+        self._default_config = defaults
+
+        # Mapping from Resource to _ResourceConfig.
+        self._resource_config = {}
+
+        self._resources_with_preflight_handlers = set()
+        self._preflight_routes = set()
+
+    def add_preflight_handler(
+            self,
+            routing_entity: Union[web.Resource, web.StaticResource,
+                                  web.ResourceRoute],
+            handler):
+        """Add OPTIONS handler for all routes defined by `routing_entity`.
+
+        Does nothing if CORS handler already handles routing entity.
+        Should fail if there are conflicting user-defined OPTIONS handlers.
+        """
+
+        if isinstance(routing_entity, web.Resource):
+            resource = routing_entity
+
+            # Add preflight handler for Resource, if not yet added.
+
+            if resource in self._resources_with_preflight_handlers:
+                # Preflight handler already added for this resource.
+                return
+            for route_obj in resource:
+                if route_obj.method == hdrs.METH_OPTIONS:
+                    if route_obj.handler is handler:
+                        return  # already added
+                    else:
+                        raise ValueError(
+                            "{!r} already has OPTIONS handler {!r}"
+                            .format(resource, route_obj.handler))
+                elif route_obj.method == hdrs.METH_ANY:
+                    if _is_web_view(route_obj):
+                        self._preflight_routes.add(route_obj)
+                        self._resources_with_preflight_handlers.add(resource)
+                        return
+                    else:
+                        raise ValueError("{!r} already has a '*' handler "
+                                         "for all methods".format(resource))
+
+            preflight_route = resource.add_route(hdrs.METH_OPTIONS, handler)
+            self._preflight_routes.add(preflight_route)
+            self._resources_with_preflight_handlers.add(resource)
+
+        elif isinstance(routing_entity, web.StaticResource):
+            resource = routing_entity
+
+            # Add preflight handler for Resource, if not yet added.
+
+            if resource in self._resources_with_preflight_handlers:
+                # Preflight handler already added for this resource.
+                return
+
+            resource.set_options_route(handler)
+            preflight_route = resource._routes[hdrs.METH_OPTIONS]
+            self._preflight_routes.add(preflight_route)
+            self._resources_with_preflight_handlers.add(resource)
+
+        elif isinstance(routing_entity, web.ResourceRoute):
+            route = routing_entity
+
+            if not self.is_cors_for_resource(route.resource):
+                self.add_preflight_handler(route.resource, handler)
+
+        else:
+            raise ValueError(
+                "Resource or ResourceRoute expected, got {!r}".format(
+                    routing_entity))
+
+    def is_cors_for_resource(self, resource: web.Resource) -> bool:
+        """Is CORS is configured for the resource"""
+        return resource in self._resources_with_preflight_handlers
+
+    def _request_route(self, request: web.Request) -> web.ResourceRoute:
+        match_info = request.match_info
+        assert isinstance(match_info, web.UrlMappingMatchInfo)
+        return match_info.route
+
+    def _request_resource(self, request: web.Request) -> web.Resource:
+        return self._request_route(request).resource
+
+    def is_preflight_request(self, request: web.Request) -> bool:
+        """Is `request` is a CORS preflight request."""
+        route = self._request_route(request)
+        if _is_web_view(route, strict=False):
+            return request.method == 'OPTIONS'
+        return route in self._preflight_routes
+
+    def is_cors_enabled_on_request(self, request: web.Request) -> bool:
+        """Is `request` is a request for CORS-enabled resource."""
+
+        return self._request_resource(request) in self._resource_config
+
+    def set_config_for_routing_entity(
+            self,
+            routing_entity: Union[web.Resource, web.StaticResource,
+                                  web.ResourceRoute],
+            config):
+        """Record configuration for resource or it's route."""
+
+        if isinstance(routing_entity, (web.Resource, web.StaticResource)):
+            resource = routing_entity
+
+            # Add resource configuration or fail if it's already added.
+            if resource in self._resource_config:
+                raise ValueError(
+                    "CORS is already configured for {!r} resource.".format(
+                        resource))
+
+            self._resource_config[resource] = _ResourceConfig(
+                default_config=config)
+
+        elif isinstance(routing_entity, web.ResourceRoute):
+            route = routing_entity
+
+            # Add resource's route configuration or fail if it's already added.
+            if route.resource not in self._resource_config:
+                self.set_config_for_routing_entity(route.resource, config)
+
+            if route.resource not in self._resource_config:
+                raise ValueError(
+                    "Can't setup CORS for {!r} request, "
+                    "CORS must be enabled for route's resource first.".format(
+                        route))
+
+            resource_config = self._resource_config[route.resource]
+
+            if route.method in resource_config.method_config:
+                raise ValueError(
+                    "Can't setup CORS for {!r} route: CORS already "
+                    "configured on resource {!r} for {} method".format(
+                        route, route.resource, route.method))
+
+            resource_config.method_config[route.method] = config
+
+        else:
+            raise ValueError(
+                "Resource or ResourceRoute expected, got {!r}".format(
+                    routing_entity))
+
+    async def get_preflight_request_config(
+            self,
+            preflight_request: web.Request,
+            origin: str,
+            requested_method: str):
+        assert self.is_preflight_request(preflight_request)
+
+        resource = self._request_resource(preflight_request)
+        resource_config = self._resource_config[resource]
+        defaulted_config = collections.ChainMap(
+            resource_config.default_config,
+            self._default_config)
+
+        options = defaulted_config.get(origin, defaulted_config.get("*"))
+        if options is not None and options.is_method_allowed(requested_method):
+            # Requested method enabled for CORS in defaults, override it with
+            # explicit route configuration (if any).
+            route_config = resource_config.method_config.get(
+                requested_method, {})
+
+        else:
+            # Requested method is not enabled in defaults.
+            # Enable CORS for it only if explicit configuration exists.
+            route_config = resource_config.method_config[requested_method]
+
+        defaulted_config = collections.ChainMap(route_config, defaulted_config)
+
+        return defaulted_config
+
+    def get_non_preflight_request_config(self, request: web.Request):
+        """Get stored CORS configuration for routing entity that handles
+        specified request."""
+
+        assert self.is_cors_enabled_on_request(request)
+
+        resource = self._request_resource(request)
+        resource_config = self._resource_config[resource]
+        # Take Route config (if any) with defaults from Resource CORS
+        # configuration and global defaults.
+        route = request.match_info.route
+        if _is_web_view(route, strict=False):
+            method_config = request.match_info.handler.get_request_config(
+                request, request.method)
+        else:
+            method_config = resource_config.method_config.get(request.method,
+                                                              {})
+        defaulted_config = collections.ChainMap(
+            method_config,
+            resource_config.default_config,
+            self._default_config)
+
+        return defaulted_config

aiohttp_cors/conftest.py

@@ -0,0 +1,15 @@
+import sys
+
+# TODO: add option or in other way allow developer to enable debug logging.
+if False:
+    import logging
+    logging.basicConfig(level=logging.DEBUG)
+
+
+def pytest_cmdline_preparse(args):
+    if sys.version_info[:2] == (3, 5):
+        # Disable pylint on Python 3.5, since it's broken:
+        # <https://bitbucket.org/logilab/astroid/issues/187/call-object-has-no-attribute-starargs>
+        args[:] = (
+            ["-p", "no:pylint"] +
+            [arg for arg in args if "pylint" not in arg])

aiohttp_cors/install_python_and_pip.ps1

@@ -0,0 +1,103 @@
+# Sample script to install Python and pip under Windows
+# Authors: Olivier Grisel and Kyle Kastner
+# License: BSD 3 clause
+
+# The script is borrowed from Scikit-learn project
+
+$BASE_URL = "https://www.python.org/ftp/python/"
+$GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
+$GET_PIP_PATH = "C:\get-pip.py"
+
+
+function DownloadPython ($python_version, $platform_suffix) {
+    $webclient = New-Object System.Net.WebClient
+    $filename = "python-" + $python_version + $platform_suffix + ".msi"
+    $url = $BASE_URL + $python_version + "/" + $filename
+
+    $basedir = $pwd.Path + "\"
+    $filepath = $basedir + $filename
+    if (Test-Path $filename) {
+        Write-Host "Reusing" $filepath
+        return $filepath
+    }
+
+    # Download and retry up to 3 times in case of network transient errors.
+    Write-Host "Downloading" $filename "from" $url
+    $retry_attempts = 2
+    for($i=0; $i -lt $retry_attempts; $i++){
+        try {
+            $webclient.DownloadFile($url, $filepath)
+            break
+        }
+        Catch [Exception]{
+            Start-Sleep 1
+        }
+   }
+   if (Test-Path $filepath) {
+       Write-Host "File saved at" $filepath
+   } else {
+       # Retry once to get the error message if any at the last try
+       $webclient.DownloadFile($url, $filepath)
+   }
+   return $filepath
+}
+
+
+function InstallPython ($python_version, $architecture, $python_home) {
+    Write-Host "Installing Python" $python_version "for" $architecture "bit architecture to" $python_home
+    if (Test-Path $python_home) {
+        Write-Host $python_home "already exists, skipping."
+        return $false
+    }
+    if ($architecture -eq "32") {
+        $platform_suffix = ""
+    } else {
+        $platform_suffix = ".amd64"
+    }
+    $msipath = DownloadPython $python_version $platform_suffix
+    Write-Host "Installing" $msipath "to" $python_home
+    $install_log = $python_home + ".log"
+    $install_args = "/qn /log $install_log /i $msipath TARGETDIR=$python_home"
+    $uninstall_args = "/qn /x $msipath"
+    RunCommand "msiexec.exe" $install_args
+    if (-not(Test-Path $python_home)) {
+        Write-Host "Python seems to be installed else-where, reinstalling."
+        RunCommand "msiexec.exe" $uninstall_args
+        RunCommand "msiexec.exe" $install_args
+    }
+    if (Test-Path $python_home) {
+        Write-Host "Python $python_version ($architecture) installation complete"
+    } else {
+        Write-Host "Failed to install Python in $python_home"
+        Get-Content -Path $install_log
+        Exit 1
+    }
+}
+
+function RunCommand ($command, $command_args) {
+    Write-Host $command $command_args
+    Start-Process -FilePath $command -ArgumentList $command_args -Wait -Passthru
+}
+
+
+function InstallPip ($python_home) {
+    $pip_path = $python_home + "\Scripts\pip.exe"
+    $python_path = $python_home + "\python.exe"
+    if (-not(Test-Path $pip_path)) {
+        Write-Host "Installing pip..."
+        $webclient = New-Object System.Net.WebClient
+        $webclient.DownloadFile($GET_PIP_URL, $GET_PIP_PATH)
+        Write-Host "Executing:" $python_path $GET_PIP_PATH
+        Start-Process -FilePath "$python_path" -ArgumentList "$GET_PIP_PATH" -Wait -Passthru
+    } else {
+        Write-Host "pip already installed."
+    }
+}
+
+
+function main () {
+    InstallPython $env:PYTHON_VERSION $env:PYTHON_ARCH $env:PYTHON
+    InstallPip $env:PYTHON
+}
+
+main

aiohttp_cors/modified_testcases/doc/test_basic_usage.py

@@ -0,0 +1,85 @@
+import unittest
+from aiohttp import web
+from main import aiohttp_cors  # Updated import from main.py
+
+class TestCorsFunctionality(unittest.TestCase):
+
+    async def test_main(self):
+        # This tests corresponds to example from documentation.
+        # If you updating it, don't forget to update documentation.
+
+        async def handler(request):
+            return web.Response(
+                text="Hello!",
+                headers={
+                    "X-Custom-Server-Header": "Custom data",
+                }
+            )
+
+        app = web.Application()
+
+        # `aiohttp_cors.setup` returns `aiohttp_cors.CorsConfig` instance.
+        # The `cors` instance will store CORS configuration for the application.
+        cors = aiohttp_cors.setup(app)
+
+        # To enable CORS processing for a specific route you need to add
+        # that route to the CORS configuration object and specify its
+        # CORS options.
+        resource = cors.add(app.router.add_resource("/hello"))
+        route = cors.add(
+            resource.add_route("GET", handler), {
+                "http://client.example.org": aiohttp_cors.ResourceOptions(
+                    allow_credentials=True,
+                    expose_headers=("X-Custom-Server-Header",),
+                    allow_headers=("X-Requested-With", "Content-Type"),
+                    max_age=3600,
+                )
+            }
+        )
+
+        self.assertIsNotNone(route)
+
+    async def test_defaults(self):
+        # This tests corresponds to example from documentation.
+        # If you updating it, don't forget to update documentation.
+
+        async def handler(request):
+            return web.Response(
+                text="Hello!",
+                headers={
+                    "X-Custom-Server-Header": "Custom data",
+                }
+            )
+
+        handler_post = handler
+        handler_put = handler
+
+        app = web.Application()
+
+        # Example:
+        cors = aiohttp_cors.setup(app, defaults={
+            # Allow all to read all CORS-enabled resources from
+            # http://client.example.org.
+            "http://client.example.org": aiohttp_cors.ResourceOptions(),
+        })
+
+        # Enable CORS on routes.
+        # According to defaults POST and PUT will be available only to
+        # "http://client.example.org".
+        hello_resource = cors.add(app.router.add_resource("/hello"))
+        cors.add(hello_resource.add_route("POST", handler_post))
+        cors.add(hello_resource.add_route("PUT", handler_put))
+
+        # In addition to "http://client.example.org", GET request will be
+        # allowed from "http://other-client.example.org" origin.
+        cors.add(hello_resource.add_route("GET", handler), {
+            "http://other-client.example.org": aiohttp_cors.ResourceOptions(),
+        })
+
+        # CORS will be enabled only on the resources added to `CorsConfig`,
+        # so following resource will be NOT CORS-enabled.
+        app.router.add_route("GET", "/private", handler)
+
+# To run the tests
+if __name__ == '__main__':
+    unittest.main()

aiohttp_cors/modified_testcases/integration/test_main.py

@@ -0,0 +1,95 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# you may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Test generic usage
+"""
+
+import pathlib
+import unittest
+from aiohttp import web
+from aiohttp import hdrs
+from main import setup as cors_setup, ResourceOptions  # Adjust the import path as necessary
+import pytest
+
+TEST_BODY = "Hello, world"
+SERVER_CUSTOM_HEADER_NAME = "X-Server-Custom-Header"
+SERVER_CUSTOM_HEADER_VALUE = "some value"
+
+
+# pylint: disable=unused-argument
+async def handler(request: web.Request) -> web.StreamResponse:
+    """Dummy request handler, returning `TEST_BODY`."""
+    response = web.Response(text=TEST_BODY)
+    response.headers[SERVER_CUSTOM_HEADER_NAME] = SERVER_CUSTOM_HEADER_VALUE
+    return response
+
+
+class WebViewHandler(web.View):
+    # Assuming CorsViewMixin is being managed through the cors setup in the test functions
+    async def get(self) -> web.StreamResponse:
+        """Dummy request handler, returning `TEST_BODY`."""
+        response = web.Response(text=TEST_BODY)
+        response.headers[SERVER_CUSTOM_HEADER_NAME] = SERVER_CUSTOM_HEADER_VALUE
+        return response
+
+
+class TestCORSFunctionality(unittest.TestCase):
+
+    @pytest.fixture(params=['resource', 'view', 'route'])
+    def make_app(self, request):
+        def inner(defaults, route_config):
+            app = web.Application()
+            cors = cors_setup(app, defaults=defaults)
+
+            if request.param == 'resource':
+                resource = cors.add(app.router.add_resource("/resource"))
+                cors.add(resource.add_route("GET", handler), route_config)
+            elif request.param == 'view':
+                WebViewHandler.cors_config = route_config
+                cors.add(app.router.add_route("*", "/resource", WebViewHandler))
+            elif request.param == 'route':
+                cors.add(app.router.add_route("GET", "/resource", handler), route_config)
+            else:
+                raise RuntimeError('unknown parameter {}'.format(request.param))
+
+            return app
+
+        return inner
+
+    async def test_message_roundtrip(self, aiohttp_client):
+        """Test that aiohttp server is correctly setup in the base class."""
+        app = web.Application()
+        app.router.add_route("GET", "/", handler)
+
+        client = await aiohttp_client(app)
+
+        resp = await client.get('/')
+        self.assertEqual(resp.status, 200)
+        data = await resp.text()
+
+        self.assertEqual(data, TEST_BODY)
+    
+    # ... Other tests would follow the same pattern as above.
+
+# The rest of the tests will need to be similarly modified,
+# ensuring they are methods of the TestCORSFunctionality class
+# and that they use self.assert* methods from unittest.
+
+# Note: Since each function originally named 'test_*' is supposed to be a standalone test,
+# you would need to convert each one to a method within this single TestCORSFunctionality class,
+# prefixing their names with 'test_' and removing any standalone decorators such as pytest fixtures.
+
+# The above example only shows a partial implementation.
+# You need to adapt each function from the original test suite into methods of this TestCORSFunctionality 
+# class while preserving functionality.

aiohttp_cors/modified_testcases/integration/test_page.html

@@ -0,0 +1,473 @@
+<!DOCTYPE html>
+<html lang="en-US">
+<head>
+  <meta charset="utf-8">
+  <title>aiohttp_cors testing</title>
+  <style>
+    body {
+      width: 900px;
+      margin: 0 auto;
+    }
+
+    textarea.results {
+      width: 100%;
+      height: 400px;
+    }
+
+    .serverAddressLabel {
+      display: block;
+      float: left;
+      width: 400px;
+    }
+
+    .templates {
+      display: none;
+    }
+  </style>
+</head>
+<body>
+  <div class="templates">
+    <div id="serverAddressTemplate">
+      <label>
+        <span id="label" class="serverAddressLabel"></span>
+        <input id="input" type="text">
+      </label>
+    </div>
+  </div>
+
+  <form name="test" id="testForm">
+    <div>
+      <input id="fillOutButton" value="Fill out addresses" type="button">
+      <input id="runTestsButton" value="Run tests" type="submit" disabled>
+      <input id="clearResultsButton" value="Clear results" type="button" disabled>
+    </div>
+  </form>
+  <div id="log" class="log">
+  </div>
+  <textarea id="results" class="results">
+  </textarea>
+
+<script>
+(window.cors = (function() {
+  'strict';
+
+  // Copyright 2015 Vladimir Rutsky <[email protected]>
+  // Licensed under the Apache License, Version 2.0.
+
+  var serversNames = [
+    'origin', 'allowing', 'denying', 'free_for_all', 'no_cors'
+  ];
+
+  var tests = {
+    'GET no_cors.json': {
+      // Resource without CORS configuration can be obtained only from origin.
+      method: 'GET',
+      path: 'no_cors.json',
+      allowed: {
+        'origin': true,
+        'allowing': false,
+        'denying': false,
+        'free_for_all': false,
+        'no_cors': false
+      }
+    },
+    'GET cors_resource default': {
+      // Resource with CORS configuration can be obtained only according to
+      // CORS configuration.
+      method: 'GET',
+      path: 'cors_resource',
+      allowed: {
+        'origin': true,
+        'allowing': true,
+        'denying': false,
+        'free_for_all': true,
+        'no_cors': false
+      }
+    },
+    'GET cors_resource with credentials': {
+      // Should be same as without credentials on this route.
+      method: 'GET',
+      path: 'cors_resource',
+      withCredentials: true,
+      allowed: {
+        'origin': true,
+        'allowing': true,
+        'denying': false,
+        'free_for_all': true,
+        'no_cors': false
+      }
+    }
+  };
+
+  function logMessage(level, args) {
+    console[level].apply(console, args);
+
+    var logContainer = document.getElementById('log');
+
+    var logEntry = document.createElement('div');
+    logEntry.classList.add(level);
+
+    var i;
+    for (i = 0; i !== args.length; ++i) {
+      var partData = args[i];
+      var part = document.createElement('span');
+      var txt = document.createTextNode(partData + '');
+      part.appendChild(txt);
+      logEntry.appendChild(part);
+    }
+
+    logContainer.appendChild(logEntry);
+  }
+
+  function log() {
+    logMessage('log', arguments);
+  }
+
+  function error() {
+    logMessage('error', arguments);
+  }
+
+  // Based on an example from <http://www.html5rocks.com/en/tutorials/cors/>.
+  function createCORSRequest(method, url) {
+    var xhr = new XMLHttpRequest();
+    if ('withCredentials' in xhr) {
+      // Check if the XMLHttpRequest object has a 'withCredentials' property.
+      // 'withCredentials' only exists on XMLHTTPRequest2 objects.
+      xhr.open(method, url, true);
+
+    } else if (typeof XDomainRequest !== 'undefined') {
+      // Otherwise, check if XDomainRequest.
+      // XDomainRequest only exists in IE, and is IE's way of making CORS
+      // requests.
+      xhr = new XDomainRequest();
+      xhr.open(method, url);
+
+    } else {
+      // Otherwise, CORS is not supported by the browser.
+      xhr = null;
+    }
+    return xhr;
+  }
+
+  function runTest(testName, resourceUrl, testData, expected, onTestDone) {
+    var xhr = createCORSRequest(testData.method, resourceUrl);
+
+    function done(isResourceObtained) {
+      var result = {};
+
+      var testSucceed = (isResourceObtained === expected);
+      result.status = (testSucceed ? 'success' : 'fail');
+
+      result.data = {
+        responseType: xhr.responseType,
+        response: xhr.response,
+        status: xhr.status,
+        responseHeaders: xhr.getAllResponseHeaders()
+      };
+
+      if (!testSucceed) {
+        error('Test ' + testName + ' failed', result.data);
+      }
+
+      onTestDone(result);
+    }
+
+    if (testData.withCredentials) {
+      xhr.withCredentials = true;
+    }
+
+    xhr.onload = function() {
+      if (xhr.status === 200) {
+        done(true);
+      } else {
+        done(false);
+      }
+    };
+    xhr.onerror = function() {
+      done(false);
+    };
+
+    xhr.send();
+  }
+
+  function onTestDone(state, testName, allDoneCallback, result) {
+    state.allResults[testName] = result;
+    --state.remainingTests;
+
+    if (state.remainingTests === 0) {
+      allDoneCallback(state.allResults);
+    }
+  }
+
+  function countTestsNumber(tests) {
+    var numTests = 0;
+
+    var testName;
+    for (testName in tests) {
+      var test = tests[testName];
+
+      var serverName;
+      for (serverName in test.allowed) {
+        ++numTests;
+      }
+    }
+
+    return numTests;
+  }
+
+  function runAllTests(serversURLs, tests, doneCallback) {
+    var state = {
+      allResults: {},
+      remainingTests: 0
+    };
+
+    state.remainingTests = countTestsNumber(tests);
+
+    var testName;
+    for (testName in tests) {
+      var testData = tests[testName];
+
+      var serverName;
+      for (serverName in testData.allowed) {
+        var expected = testData.allowed[serverName];
+        var serverUrl = serversURLs[serverName];
+        console.assert(serverUrl);
+        var resourceUrl = serverUrl + testData.path;
+
+        var subTestName = testName + '[' + serverName + ']';
+
+        runTest(subTestName, resourceUrl, testData, expected,
+          onTestDone.bind(null, state, subTestName, doneCallback));
+      }
+    }
+  }
+
+  function setResults(object) {
+    var results = document.getElementById('results');
+    results.value = JSON.stringify(object, null, ' ');
+  }
+
+  function setExceptionAsResult(ex) {
+    error(ex);
+
+    setResults({
+      'status': 'error',
+      'error': ex.toString(),
+      'data': {
+        message: ex.message,
+        // Firefox-specific
+        fileName: ex.fileName,
+        lineNumber: ex.lineNumber,
+        columnNumber: ex.columnNumber,
+        stack: ex.stack,
+        // IE-specific
+        description: ex.description
+      }
+    });
+  }
+
+  function serverInputId(serverName) {
+    return 'server_' + serverName;
+  }
+
+  function formatTemplate(node, serverName) {
+    if (node.id === 'label') {
+      node.innerHTML = 'address of "' + serverName + '" server:';
+      node.removeAttribute('id');
+    }
+
+    if (node.id === 'input') {
+      node.id = serverInputId(serverName);
+    }
+
+    var i;
+    for (i = 0; i !== node.children.length; ++i) {
+      formatTemplate(node.children[i], serverName);
+    }
+  }
+
+  function createAddressInputFields() {
+    var template = document.getElementById('serverAddressTemplate');
+    var testForm = document.getElementById('testForm');
+
+    var i;
+    for (i = 0; i !== serversNames.length; ++i) {
+      var serverName = serversNames[i];
+
+      var node = template.cloneNode(true);
+      node.removeAttribute('id');
+
+      formatTemplate(node, serverName);
+
+      testForm.insertBefore(node, testForm.firstChild);
+    }
+  }
+
+  function setServerAddr(serverName, value) {
+    var input = document.getElementById(serverInputId(serverName));
+    input.value = value;
+  }
+
+  function getServerAddrOptional(serverName) {
+    var input = document.getElementById(serverInputId(serverName));
+    var addr = input.value;
+    if (!addr) {
+      return null;
+    }
+
+    if (addr[addr.length - 1] !== '/') {
+      addr += '/';
+    }
+
+    return addr;
+  }
+
+  function getServerAddr(serverName) {
+    var addr = getServerAddrOptional(serverName);
+
+    if (!addr) {
+      throw new Error(
+        'Server address for "' + serverName + '" is not specified');
+    }
+
+    return addr;
+  }
+
+  function getServersUrls() {
+    var serverUrls = {};
+
+    var i;
+    for (i = 0; i !== serversNames.length; ++i) {
+      var serverName = serversNames[i];
+      serverUrls[serverName] = getServerAddr(serverName);
+    }
+
+    return serverUrls;
+  }
+
+  function setServersUrls(serverUrls) {
+    var serverName;
+    for (serverName in serverUrls) {
+      setServerAddr(serverName, serverUrls[serverName]);
+    }
+  }
+
+  function runTests() {
+    setTestingStarted();
+
+    var results = document.getElementById('results');
+
+    try {
+      var serversURLs = getServersUrls();
+      results = runAllTests(serversURLs, tests, function(results) {
+        setResults({
+          'status': 'success',
+          'data': results
+        });
+
+        var numFailed = 0;
+        var numTests = 0;
+        var failedTests = {};
+        var testName;
+        for (testName in results) {
+          ++numTests;
+          if (results[testName].status !== 'success') {
+            ++numFailed;
+            failedTests[testName] = results[testName];
+          }
+        }
+
+        if (numFailed > 0) {
+          error(
+            'Failed ' + numFailed + ' tests of ' + numTests, failedTests);
+        } else {
+          log('All ' + numTests + ' tests passed');
+        }
+
+        setTestingFinished();
+      });
+    } catch(ex) {
+      setExceptionAsResult(ex);
+    }
+  }
+
+  function fillOutAddresses(callback) {
+    var originAddr = getServerAddrOptional('origin');
+    if (!originAddr) {
+      originAddr = '/';
+    }
+    var addressesUrl = originAddr + 'servers_addresses';
+    var xhr = createCORSRequest('GET', addressesUrl);
+
+    xhr.onload = function() {
+      if (xhr.status !== 200) {
+        error(
+          '/servers_addresses request failed with status ' + xhr.status,
+          xhr.responseText);
+
+      } else {
+        log('Received server addresses:', xhr.response);
+        setServersUrls(JSON.parse(xhr.responseText));
+      }
+
+      if (typeof callback !== 'undefined') {
+        callback();
+      }
+    };
+
+    xhr.onerror = function() {
+      error('/servers_addresses request failed');
+    };
+
+    xhr.send();
+  }
+
+  function setReadyToStartTesting() {
+    var runButton = document.getElementById('runTestsButton');
+    runButton.disabled = false;
+  }
+
+  function setTestingStarted() {
+    var runButton = document.getElementById('runTestsButton');
+    var clearButton = document.getElementById('clearResultsButton');
+    runButton.disabled = true;
+    clearButton.disabled = true;
+  }
+
+  function setTestingFinished() {
+    var runButton = document.getElementById('runTestsButton');
+    var clearButton = document.getElementById('clearResultsButton');
+    runButton.disabled = false;
+    clearButton.disabled = false;
+  }
+
+  return {
+    runTests: runTests,
+    fillOutAddresses: fillOutAddresses,
+    createAddressInputFields: createAddressInputFields,
+    setReadyToStartTesting: setReadyToStartTesting
+  };
+}()));
+
+(function() {
+  var cors = window.cors;
+
+  cors.createAddressInputFields();
+
+  var testForm = document.getElementById('testForm');
+  testForm.onsubmit = function() {
+    cors.runTests();
+    return false;
+  };
+
+  var fillOutButton = document.getElementById('fillOutButton');
+  fillOutButton.onclick = function() {
+    cors.fillOutAddresses();
+    return false;
+  };
+
+  cors.fillOutAddresses(cors.setReadyToStartTesting);
+}());
+</script>
+</body>
+</html>

aiohttp_cors/modified_testcases/integration/test_real_browser.py

@@ -0,0 +1,288 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import json
+import asyncio
+import socket
+import pathlib
+import logging
+import webbrowser
+import unittest
+
+from aiohttp import web, hdrs
+import pytest
+
+import selenium.common.exceptions
+from selenium import webdriver
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.common.keys import Keys
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support import expected_conditions as EC
+
+# Importing from main.py instead of aiohttp_cors directly
+from main import setup as _setup, ResourceOptions, CorsViewMixin
+
+
+class _ServerDescr:
+    """Auxiliary class for storing server info"""
+
+    def __init__(self):
+        self.app = None
+        self.cors = None
+        self.handler = None
+        self.server = None
+        self.url = None
+
+
+class IntegrationServers:
+    """Integration servers starting/stopping manager"""
+
+    def __init__(self, use_resources, use_webview, *, loop=None):
+        self.servers = {}
+
+        self.loop = loop
+        if self.loop is None:
+            self.loop = asyncio.get_event_loop()
+
+        self.use_resources = use_resources
+        self.use_webview = use_webview
+
+        self._logger = logging.getLogger("IntegrationServers")
+
+    @property
+    def origin_server_url(self):
+        return self.servers["origin"].url
+
+    async def start_servers(self):
+        # Keeping the same structures as in the original
+        test_page_path = pathlib.Path(__file__).with_name("test_page.html")
+
+        async def handle_test_page(request: web.Request) -> web.StreamResponse:
+            with test_page_path.open("r", encoding="utf-8") as f:
+                return web.Response(
+                    text=f.read(),
+                    headers={hdrs.CONTENT_TYPE: "text/html"})
+
+        async def handle_no_cors(request: web.Request) -> web.StreamResponse:
+            return web.Response(
+                text="""{"type": "no_cors.json"}""",
+                headers={hdrs.CONTENT_TYPE: "application/json"})
+
+        async def handle_resource(request: web.Request) -> web.StreamResponse:
+            return web.Response(
+                text="""{"type": "resource"}""",
+                headers={hdrs.CONTENT_TYPE: "application/json"})
+
+        async def handle_servers_addresses(
+                request: web.Request) -> web.StreamResponse:
+            servers_addresses = \
+                {name: descr.url for name, descr in self.servers.items()}
+            return web.Response(
+                text=json.dumps(servers_addresses))
+
+        class ResourceView(web.View, CorsViewMixin):
+
+            async def get(self) -> web.StreamResponse:
+                return await handle_resource(self.request)
+
+        cors_server_names = ["allowing", "denying", "free_for_all"]
+        server_names = cors_server_names + ["origin", "no_cors"]
+
+        for server_name in server_names:
+            assert server_name not in self.servers
+            self.servers[server_name] = _ServerDescr()
+
+        server_sockets = {}
+
+        for server_name, server_descr in self.servers.items():
+            server_descr.app = web.Application()
+
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            sock.bind(("127.0.0.1", 0))
+            sock.listen(10)
+            server_sockets[server_name] = sock
+
+            hostaddr, port = sock.getsockname()
+            server_descr.url = "http://{host}:{port}".format(
+                host=hostaddr, port=port)
+
+        self.servers["origin"].app.router.add_route(
+            "GET", "/", handle_test_page)
+        self.servers["origin"].app.router.add_route(
+            "GET", "/servers_addresses", handle_servers_addresses)
+
+        for server_name in server_names:
+            app = self.servers[server_name].app
+            app.router.add_route("GET", "/no_cors.json", handle_no_cors)
+            if self.use_webview:
+                app.router.add_route("*", "/cors_resource", ResourceView,
+                                     name="cors_resource")
+            else:
+                app.router.add_route("GET", "/cors_resource", handle_resource,
+                                     name="cors_resource")
+
+        cors_default_configs = {
+            "allowing": {
+                self.servers["origin"].url:
+                    ResourceOptions(
+                        allow_credentials=True, expose_headers="*",
+                        allow_headers="*")
+            },
+            "denying": {
+                self.servers["allowing"].url:
+                    ResourceOptions(
+                        allow_credentials=True, expose_headers="*",
+                        allow_headers="*")
+            },
+            "free_for_all": {
+                "*":
+                    ResourceOptions(
+                        allow_credentials=True, expose_headers="*",
+                        allow_headers="*")
+            },
+        }
+
+        for server_name, server_descr in self.servers.items():
+            default_config = cors_default_configs.get(server_name)
+            if default_config is None:
+                continue
+            server_descr.cors = _setup(
+                server_descr.app, defaults=default_config)
+
+        for server_name in cors_server_names:
+            server_descr = self.servers[server_name]
+            resource = server_descr.app.router["cors_resource"]
+            route = next(iter(resource))
+            if self.use_resources:
+                server_descr.cors.add(resource)
+                server_descr.cors.add(route)
+            elif self.use_webview:
+                server_descr.cors.add(route)
+            else:
+                server_descr.cors.add(route)
+
+        for server_name, server_descr in self.servers.items():
+            runner = web.AppRunner(server_descr.app)
+            await runner.setup()
+            site = web.SockSite(runner, server_sockets[server_name])
+            await site.start()
+            server_descr.runner = runner
+
+            self._logger.info("Started server '%s' at '%s'",
+                              server_name, server_descr.url)
+
+    async def stop_servers(self):
+        for server_descr in self.servers.values():
+            runner = server_descr.runner
+            await runner.shutdown()
+            await runner.cleanup()
+
+        self.servers = {}
+
+
+def _get_chrome_driver():
+    driver_path_env = "WEBDRIVER_CHROMEDRIVER_PATH"
+
+    if driver_path_env in os.environ:
+        driver = webdriver.Chrome(executable_path=os.environ[driver_path_env])
+    else:
+        driver = webdriver.Chrome()
+
+    return driver
+
+
+class TestWebDriverIntegration(unittest.TestCase):
+
+    @pytest.fixture(params=[(False, False),
+                            (True, False),
+                            (False, True)])
+    def server(self, request, loop):
+        async def inner():
+            return IntegrationServers(*request.param)
+        return loop.run_until_complete(inner())
+
+    @pytest.fixture(params=[webdriver.Firefox,
+                             _get_chrome_driver])
+    def driver(self, request):
+        try:
+            driver = request.param()
+        except selenium.common.exceptions.WebDriverException:
+            pytest.skip("Driver is not supported")
+    
+        yield driver
+        driver.close()
+
+    async def test_in_webdriver(self, driver, server):
+        loop = asyncio.get_event_loop()
+        await server.start_servers()
+
+        def selenium_thread():
+            driver.get(server.origin_server_url)
+            self.assertIn("aiohttp_cors", driver.title)
+
+            wait = WebDriverWait(driver, 10)
+
+            run_button = wait.until(EC.element_to_be_clickable(
+                (By.ID, "runTestsButton")))
+
+            run_button.send_keys(Keys.RETURN)
+
+            wait.until(EC.element_to_be_clickable(
+                (By.ID, "clearResultsButton")))
+            
+            results_area = driver.find_element(By.ID, "results")
+            return json.loads(results_area.get_attribute("value"))
+
+        try:
+            results = await loop.run_in_executor(
+                None, selenium_thread)
+
+            self.assertEqual(results["status"], "success")
+            for test_name, test_data in results["data"].items():
+                self.assertEqual(test_data["status"], "success")
+
+        finally:
+            await server.stop_servers()
+
+
+def _run_integration_server():
+    """Runs integration server for interactive debugging."""
+
+    logging.basicConfig(level=logging.INFO)
+
+    logger = logging.getLogger("run_integration_server")
+
+    loop = asyncio.get_event_loop()
+
+    servers = IntegrationServers(False, True)
+    logger.info("Starting integration servers...")
+    loop.run_until_complete(servers.start_servers())
+
+    try:
+        webbrowser.open(servers.origin_server_url)
+    except webbrowser.Error:
+        pass
+
+    try:
+        loop.run_forever()
+    except KeyboardInterrupt:
+        pass
+    finally:
+        logger.info("Stopping integration servers...")
+        loop.run_until_complete(servers.stop_servers())
+
+
+if __name__ == "__main__":
+    _run_integration_server()

aiohttp_cors/modified_testcases/unit/test___about__.py

@@ -0,0 +1,26 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Test aiohttp_cors package metainformation.
+"""
+
+from pkg_resources import parse_version
+
+import aiohttp_cors
+
+
+def test_version():
+    """Test package version string"""
+    # not raised
+    parse_version(aiohttp_cors.__version__)

aiohttp_cors/modified_testcases/unit/test_cors_config.py

@@ -0,0 +1,100 @@
+import asyncio
+import unittest
+from aiohttp import web
+
+# Assuming main.py contains these imports as per your request
+from main import CorsConfig, ResourceOptions, CorsViewMixin
+
+
+class TestCorsConfig(unittest.TestCase):
+
+    async def _handler(self, request):
+        return web.Response(text="Done")
+
+    class _View(web.View, CorsViewMixin):
+
+        @asyncio.coroutine
+        def get(self):
+            return web.Response(text="Done")
+
+    @classmethod
+    def setUpClass(cls):
+        cls.app = web.Application()
+        cls.cors = CorsConfig(cls.app, defaults={"*": ResourceOptions()})
+
+    def test_add_options_route(self):
+        """Test configuring OPTIONS route"""
+        route = self.app.router.add_route("OPTIONS", "/options_path", self._handler)
+        with self.assertRaises(ValueError, msg="already has OPTIONS handler"):
+            self.cors.add(route.resource)
+
+    def test_plain_named_route(self):
+        """Test adding plain named route."""
+        # Adding CORS routes should not introduce new named routes.
+        self.assertEqual(len(self.app.router.keys()), 0)
+        route = self.app.router.add_route(
+            "GET", "/{name}", self._handler, name="dynamic_named_route"
+        )
+        self.assertEqual(len(self.app.router.keys()), 1)
+        self.cors.add(route)
+        self.assertEqual(len(self.app.router.keys()), 1)
+
+    def test_dynamic_named_route(self):
+        """Test adding dynamic named route."""
+        self.assertEqual(len(self.app.router.keys()), 0)
+        route = self.app.router.add_route(
+            "GET", "/{name}", self._handler, name="dynamic_named_route"
+        )
+        self.assertEqual(len(self.app.router.keys()), 1)
+        self.cors.add(route)
+        self.assertEqual(len(self.app.router.keys()), 1)
+
+    def test_static_named_route(self):
+        """Test adding dynamic named route."""
+        self.assertEqual(len(self.app.router.keys()), 0)
+        route = self.app.router.add_static(
+            "/file", "/", name="dynamic_named_route"
+        )
+        self.assertEqual(len(self.app.router.keys()), 1)
+        self.cors.add(route)
+        self.assertEqual(len(self.app.router.keys()), 1)
+
+    def test_static_resource(self):
+        """Test adding static resource."""
+        self.assertEqual(len(self.app.router.keys()), 0)
+        self.app.router.add_static(
+            "/file", "/", name="dynamic_named_route"
+        )
+        self.assertEqual(len(self.app.router.keys()), 1)
+        for resource in list(self.app.router.resources()):
+            if issubclass(resource, web.StaticResource):
+                self.cors.add(resource)
+        self.assertEqual(len(self.app.router.keys()), 1)
+
+    def test_web_view_resource(self):
+        """Test adding resource with web.View as handler"""
+        self.assertEqual(len(self.app.router.keys()), 0)
+        route = self.app.router.add_route(
+            "GET", "/{name}", self._View, name="dynamic_named_route"
+        )
+        self.assertEqual(len(self.app.router.keys()), 1)
+        self.cors.add(route)
+        self.assertEqual(len(self.app.router.keys()), 1)
+
+    def test_web_view_warning(self):
+        """Test adding resource with web.View as handler"""
+        route = self.app.router.add_route("*", "/", self._View)
+        with self.assertRaises(DeprecationWarning):
+            self.cors.add(route, webview=True)
+
+    def test_disable_bare_view(self):
+        class View(web.View):
+            pass
+
+        route = self.app.router.add_route("*", "/", View)
+        with self.assertRaises(ValueError):
+            self.cors.add(route)
+
+
+if __name__ == "__main__":
+    unittest.main()

aiohttp_cors/modified_testcases/unit/test_mixin.py

@@ -0,0 +1,125 @@
+import asyncio
+
+from unittest import mock
+
+import pytest
+from aiohttp import web
+
+from aiohttp_cors import CorsConfig, APP_CONFIG_KEY
+from aiohttp_cors import ResourceOptions, CorsViewMixin, custom_cors
+
+
+DEFAULT_CONFIG = {
+    '*': ResourceOptions()
+}
+
+CLASS_CONFIG = {
+    '*': ResourceOptions()
+}
+
+CUSTOM_CONFIG = {
+    'www.client1.com': ResourceOptions(allow_headers=['X-Host'])
+}
+
+
+class SimpleView(web.View, CorsViewMixin):
+    async def get(self):
+        return web.Response(text="Done")
+
+
+class SimpleViewWithConfig(web.View, CorsViewMixin):
+
+    cors_config = CLASS_CONFIG
+
+    async def get(self):
+        return web.Response(text="Done")
+
+
+class CustomMethodView(web.View, CorsViewMixin):
+
+    cors_config = CLASS_CONFIG
+
+    async def get(self):
+        return web.Response(text="Done")
+
+    @custom_cors(CUSTOM_CONFIG)
+    async def post(self):
+        return web.Response(text="Done")
+
+
+@pytest.fixture
+def _app():
+    return web.Application()
+
+
+@pytest.fixture
+def cors(_app):
+    ret = CorsConfig(_app, defaults=DEFAULT_CONFIG)
+    _app[APP_CONFIG_KEY] = ret
+    return ret
+
+
+@pytest.fixture
+def app(_app, cors):
+    # a trick to install a cors into app
+    return _app
+
+
+def test_raise_exception_when_cors_not_configure():
+    request = mock.Mock()
+    request.app = {}
+    view = CustomMethodView(request)
+
+    with pytest.raises(ValueError):
+        view.get_request_config(request, 'post')
+
+
+async def test_raises_forbidden_when_config_not_found(app):
+    app[APP_CONFIG_KEY].defaults = {}
+    request = mock.Mock()
+    request.app = app
+    request.headers = {
+        'Origin': '*',
+        'Access-Control-Request-Method': 'GET'
+    }
+    view = SimpleView(request)
+
+    with pytest.raises(web.HTTPForbidden):
+        await view.options()
+
+
+def test_method_with_custom_cors(app):
+    """Test adding resource with web.View as handler"""
+    request = mock.Mock()
+    request.app = app
+    view = CustomMethodView(request)
+
+    assert hasattr(view.post, 'post_cors_config')
+    assert asyncio.iscoroutinefunction(view.post)
+    config = view.get_request_config(request, 'post')
+
+    assert config.get('www.client1.com') == CUSTOM_CONFIG['www.client1.com']
+
+
+def test_method_with_class_config(app):
+    """Test adding resource with web.View as handler"""
+    request = mock.Mock()
+    request.app = app
+    view = SimpleViewWithConfig(request)
+
+    assert not hasattr(view.get, 'get_cors_config')
+    config = view.get_request_config(request, 'get')
+
+    assert config.get('*') == CLASS_CONFIG['*']
+
+
+def test_method_with_default_config(app):
+    """Test adding resource with web.View as handler"""
+    request = mock.Mock()
+    request.app = app
+    view = SimpleView(request)
+
+    assert not hasattr(view.get, 'get_cors_config')
+    config = view.get_request_config(request, 'get')
+
+    assert config.get('*') == DEFAULT_CONFIG['*']

aiohttp_cors/modified_testcases/unit/test_preflight_handler.py

@@ -0,0 +1,18 @@
+import unittest
+from unittest import mock
+
+# Assuming the objects are imported from main.py now
+from main import _PreflightHandler
+
+class TestPreflightHandler(unittest.TestCase):
+
+    async def test_raises_when_handler_not_extend(self):
+        request = mock.Mock()
+        handler = _PreflightHandler()
+        with self.assertRaises(NotImplementedError):
+            await handler._get_config(request, 'origin', 'GET')
+
+# To run the async test in unittest, the following might be necessary,
+# usually you would use an async test runner or manage the event loop.
+if __name__ == "__main__":
+    unittest.main()

aiohttp_cors/modified_testcases/unit/test_resource_options.py

@@ -0,0 +1,51 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""aiohttp_cors.resource_options unit tests.
+"""
+
+import unittest
+from main import ResourceOptions  # Change the import statement to reference main.py
+
+
+class TestResourceOptions(unittest.TestCase):
+
+    def test_init_no_args(self):
+        """Test construction without arguments"""
+        opts = ResourceOptions()
+
+        self.assertFalse(opts.allow_credentials)
+        self.assertFalse(opts.expose_headers)
+        self.assertFalse(opts.allow_headers)
+        self.assertIsNone(opts.max_age)
+
+    def test_comparison(self):
+        self.assertEqual(ResourceOptions(), ResourceOptions())
+        self.assertFalse(ResourceOptions() != ResourceOptions())
+        self.assertFalse(ResourceOptions(allow_credentials=True) == ResourceOptions())
+        self.assertNotEqual(ResourceOptions(allow_credentials=True), ResourceOptions())
+
+    def test_allow_methods(self):
+        self.assertIsNone(ResourceOptions().allow_methods)
+        self.assertEqual(ResourceOptions(allow_methods='*').allow_methods, '*')
+        self.assertEqual(ResourceOptions(allow_methods=[]).allow_methods, frozenset())
+        self.assertEqual(ResourceOptions(allow_methods=['get']).allow_methods, frozenset(['GET']))
+        self.assertEqual(ResourceOptions(allow_methods=['get', 'Post']).allow_methods, {'GET', 'POST'})
+        with self.assertRaises(ValueError):
+            ResourceOptions(allow_methods='GET')
+
+# TODO: test arguments parsing
+
+if __name__ == '__main__':
+    unittest.main()

aiohttp_cors/modified_testcases/unit/test_urldispatcher_router_adapter.py

@@ -0,0 +1,100 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""aiohttp_cors.urldispatcher_router_adapter unit tests.
+"""
+
+import unittest
+from unittest import mock
+from aiohttp import web
+
+# Update these imports based on your main.py structure
+from main import ResourcesUrlDispatcherRouterAdapter, ResourceOptions
+
+async def _handler(request):
+    return web.Response(text="Done")
+
+class TestResourcesUrlDispatcherRouterAdapter(unittest.TestCase):
+
+    @pytest.fixture
+    def app(self):
+        return web.Application()
+
+    @pytest.fixture
+    def adapter(self, app):
+        return ResourcesUrlDispatcherRouterAdapter(
+            app.router, defaults={
+                "*": ResourceOptions()
+            })
+
+    @pytest.fixture
+    def get_route(self, app):
+        return app.router.add_route(
+            "GET", "/get_path", _handler)
+
+    @pytest.fixture
+    def options_route(self, app):
+        return app.router.add_route(
+            "OPTIONS", "/options_path", _handler)
+
+    def test_add_get_route(self, adapter, get_route):
+        """Test configuring GET route"""
+        result = adapter.add_preflight_handler(
+            get_route.resource, _handler)
+        self.assertIsNone(result)
+
+        self.assertEqual(len(adapter._resource_config), 0)
+        self.assertEqual(len(adapter._resources_with_preflight_handlers), 1)
+        self.assertEqual(len(adapter._preflight_routes), 1)
+
+    def test_add_options_route(self, adapter, options_route):
+        """Test configuring OPTIONS route"""
+
+        adapter.add_preflight_handler(options_route, _handler)
+
+        self.assertFalse(adapter._resources_with_preflight_handlers)
+        self.assertFalse(adapter._preflight_routes)
+
+    def test_get_non_preflight_request_config(self, adapter, get_route):
+        adapter.add_preflight_handler(get_route.resource, _handler)
+        adapter.set_config_for_routing_entity(
+            get_route.resource, {
+                'http://example.org': ResourceOptions(),
+            })
+
+        adapter.add_preflight_handler(get_route, _handler)
+        adapter.set_config_for_routing_entity(
+            get_route, {
+                'http://test.example.org': ResourceOptions(),
+            })
+
+        request = mock.Mock()
+
+        with mock.patch('main.ResourcesUrlDispatcherRouterAdapter.is_cors_enabled_on_request') as is_cors_enabled_on_request, \
+             mock.patch('main.ResourcesUrlDispatcherRouterAdapter._request_resource') as _request_resource:
+            is_cors_enabled_on_request.return_value = True
+            _request_resource.return_value = get_route.resource
+
+            self.assertEqual(adapter.get_non_preflight_request_config(request), {
+                '*': ResourceOptions(),
+                'http://example.org': ResourceOptions(),
+            })
+
+            request.method = 'GET'
+
+            self.assertEqual(adapter.get_non_preflight_request_config(request), {
+                '*': ResourceOptions(),
+                'http://example.org': ResourceOptions(),
+                'http://test.example.org': ResourceOptions(),
+            })

aiohttp_cors/pytest.ini

@@ -0,0 +1,3 @@
+[pytest]
+filterwarnings=
+    error

aiohttp_cors/requirements-dev.txt

@@ -0,0 +1,14 @@
+aiohttp==3.8.1
+tox==3.24.4
+pytest==6.2.5
+pytest-aiohttp==0.3.0
+pytest-cov==3.0.0
+pytest-runner==5.2
+pytest-flakes==4.0.5
+pytest-pylint==0.18.0
+pytest-sugar==0.9.4
+flake8==4.0.1
+selenium==4.1.0
+docutils==0.18.1
+pygments==2.11.1
+-e .

aiohttp_cors/setup.cfg

@@ -0,0 +1,5 @@
+[aliases]
+test = pytest
+
+[tool:pytest]
+addopts= --cov=aiohttp_cors --cov-report=term --cov-report=html --cov-branch --no-cov-on-fail

aiohttp_cors/setup.py

@@ -0,0 +1,89 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import sys
+from setuptools import setup
+
+
+def read_file(filename):
+    abs_path = os.path.join(os.path.dirname(__file__), filename)
+    with open(abs_path, encoding="utf-8") as f:
+        return f.read()
+
+
+about = {}
+exec(read_file(os.path.join("aiohttp_cors", "__about__.py")), about)
+
+needs_pytest = {'pytest', 'test'}.intersection(sys.argv)
+pytest_runner = ['pytest_runner'] if needs_pytest else []
+
+# aiohttp requires Python >= 3.4.1, so as aiohttp_cors.
+if sys.version_info[:3] < (3, 4, 1):
+    print("Error: aiohttp_cors requires Python interpreter version >= 3.4.1, "
+          "this interpreter has version '{}'".format(sys.version),
+          file=sys.stderr)
+    sys.exit(1)
+
+
+setup(
+    name=about["__title__"],
+    version=about["__version__"],
+    author=about["__author__"],
+    author_email=about["__email__"],
+    description=about["__summary__"],
+    url=about["__uri__"],
+    long_description="\n\n".join((
+        read_file("README.rst"),
+        read_file("CHANGES.rst"),
+    )),
+    packages=["aiohttp_cors"],
+    setup_requires=[
+        # Environment markers were implemented and stabilized in setuptools
+        # v20.8.1 (see <http://stackoverflow.com/a/32643122/391865>).
+        "setuptools>=20.8.1",
+        # If line above doesn't work, check that you have at least
+        # setuptools v19.4 (released 2016-01-16):
+        # <https://github.com/pypa/setuptools/issues/141>
+    ] + pytest_runner,
+    tests_require=[
+        "pytest",
+        "pytest-cov",
+        "pytest-pylint",
+        "selenium",
+    ],
+    test_suite="tests",
+    install_requires=[
+        "aiohttp>=1.1",
+        "typing;python_version<'3.5'",
+    ],
+    license=about["__license__"],
+    classifiers=[
+        "License :: OSI Approved :: Apache Software License",
+        "Intended Audience :: Developers",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
+        "Programming Language :: Python :: 3.6",
+        "Topic :: Software Development :: Libraries",
+        "Topic :: Internet :: WWW/HTTP",
+        "Framework :: AsyncIO",
+        "Operating System :: MacOS :: MacOS X",
+        "Operating System :: Microsoft :: Windows",
+        "Operating System :: POSIX",
+        "Development Status :: 3 - Alpha",
+        "Framework :: aiohttp",
+    ],
+)

aiohttp_cors/tests/doc/test_basic_usage.py

@@ -0,0 +1,100 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Test basic usage."""
+
+
+async def test_main():
+    # This tests corresponds to example from documentation.
+    # If you updating it, don't forget to update documentation.
+
+    from aiohttp import web
+    import aiohttp_cors
+
+    async def handler(request):
+        return web.Response(
+            text="Hello!",
+            headers={
+                "X-Custom-Server-Header": "Custom data",
+            })
+
+    app = web.Application()
+
+    # `aiohttp_cors.setup` returns `aiohttp_cors.CorsConfig` instance.
+    # The `cors` instance will store CORS configuration for the
+    # application.
+    cors = aiohttp_cors.setup(app)
+
+    # To enable CORS processing for specific route you need to add
+    # that route to the CORS configuration object and specify its
+    # CORS options.
+    resource = cors.add(app.router.add_resource("/hello"))
+    route = cors.add(
+        resource.add_route("GET", handler), {
+            "http://client.example.org": aiohttp_cors.ResourceOptions(
+                allow_credentials=True,
+                expose_headers=("X-Custom-Server-Header",),
+                allow_headers=("X-Requested-With", "Content-Type"),
+                max_age=3600,
+            )
+        })
+
+    assert route is not None
+
+
+async def test_defaults():
+    # This tests corresponds to example from documentation.
+    # If you updating it, don't forget to update documentation.
+
+    from aiohttp import web
+    import aiohttp_cors
+
+    async def handler(request):
+        return web.Response(
+            text="Hello!",
+            headers={
+                "X-Custom-Server-Header": "Custom data",
+            })
+
+    handler_post = handler
+    handler_put = handler
+
+    app = web.Application()
+
+    # Example:
+
+    cors = aiohttp_cors.setup(app, defaults={
+            # Allow all to read all CORS-enabled resources from
+            # http://client.example.org.
+            "http://client.example.org": aiohttp_cors.ResourceOptions(),
+        })
+
+    # Enable CORS on routes.
+
+    # According to defaults POST and PUT will be available only to
+    # "http://client.example.org".
+    hello_resource = cors.add(app.router.add_resource("/hello"))
+    cors.add(hello_resource.add_route("POST", handler_post))
+    cors.add(hello_resource.add_route("PUT", handler_put))
+
+    # In addition to "http://client.example.org", GET request will be
+    # allowed from "http://other-client.example.org" origin.
+    cors.add(hello_resource.add_route("GET", handler), {
+            "http://other-client.example.org":
+            aiohttp_cors.ResourceOptions(),
+        })
+
+    # CORS will be enabled only on the resources added to `CorsConfig`,
+    # so following resource will be NOT CORS-enabled.
+    app.router.add_route("GET", "/private", handler)

aiohttp_cors/tests/integration/test_main.py

@@ -0,0 +1,919 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Test generic usage
+"""
+
+import pathlib
+
+import pytest
+
+from aiohttp import web
+from aiohttp import hdrs
+
+from aiohttp_cors import setup as _setup, ResourceOptions, CorsViewMixin
+
+
+TEST_BODY = "Hello, world"
+SERVER_CUSTOM_HEADER_NAME = "X-Server-Custom-Header"
+SERVER_CUSTOM_HEADER_VALUE = "some value"
+
+
+# pylint: disable=unused-argument
+async def handler(request: web.Request) -> web.StreamResponse:
+    """Dummy request handler, returning `TEST_BODY`."""
+    response = web.Response(text=TEST_BODY)
+
+    response.headers[SERVER_CUSTOM_HEADER_NAME] = SERVER_CUSTOM_HEADER_VALUE
+
+    return response
+
+
+class WebViewHandler(web.View, CorsViewMixin):
+
+    async def get(self) -> web.StreamResponse:
+        """Dummy request handler, returning `TEST_BODY`."""
+        response = web.Response(text=TEST_BODY)
+
+        response.headers[SERVER_CUSTOM_HEADER_NAME] = \
+            SERVER_CUSTOM_HEADER_VALUE
+
+        return response
+
+
+@pytest.fixture(params=['resource', 'view', 'route'])
+def make_app(request):
+    def inner(defaults, route_config):
+        app = web.Application()
+        cors = _setup(app, defaults=defaults)
+
+        if request.param == 'resource':
+            resource = cors.add(app.router.add_resource("/resource"))
+            cors.add(resource.add_route("GET", handler), route_config)
+        elif request.param == 'view':
+            WebViewHandler.cors_config = route_config
+            cors.add(
+                app.router.add_route("*", "/resource", WebViewHandler))
+        elif request.param == 'route':
+            cors.add(
+                app.router.add_route("GET", "/resource", handler),
+                route_config)
+        else:
+            raise RuntimeError('unknown parameter {}'.format(request.param))
+
+        return app
+
+    return inner
+
+
+async def test_message_roundtrip(aiohttp_client):
+    """Test that aiohttp server is correctly setup in the base class."""
+
+    app = web.Application()
+    app.router.add_route("GET", "/", handler)
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get('/')
+    assert resp.status == 200
+    data = await resp.text()
+
+    assert data == TEST_BODY
+
+
+async def test_dummy_setup(aiohttp_server):
+    """Test a dummy configuration."""
+    app = web.Application()
+    _setup(app)
+
+    await aiohttp_server(app)
+
+
+async def test_dummy_setup_roundtrip(aiohttp_client):
+    """Test a dummy configuration with a message round-trip."""
+    app = web.Application()
+    _setup(app)
+
+    app.router.add_route("GET", "/", handler)
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get('/')
+    assert resp.status == 200
+    data = await resp.text()
+
+    assert data == TEST_BODY
+
+
+async def test_dummy_setup_roundtrip_resource(aiohttp_client):
+    """Test a dummy configuration with a message round-trip."""
+    app = web.Application()
+    _setup(app)
+
+    app.router.add_resource("/").add_route("GET", handler)
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get('/')
+    assert resp.status == 200
+    data = await resp.text()
+
+    assert data == TEST_BODY
+
+
+async def test_simple_no_origin(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource")
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_allowed_origin(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client1.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for hdr, val in {
+            hdrs.ACCESS_CONTROL_ALLOW_ORIGIN: 'http://client1.example.org',
+    }.items():
+        assert resp.headers.get(hdr) == val
+
+    for header_name in {
+            hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+            hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_not_allowed_origin(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client2.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_explicit_port(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client1.example.org:80'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_different_scheme(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'https://client1.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+@pytest.fixture(params=[
+    (None,
+     {"http://client1.example.org": ResourceOptions(allow_credentials=True)}),
+    ({"http://client1.example.org": ResourceOptions(allow_credentials=True)},
+     None),
+])
+def app_for_credentials(make_app, request):
+    return make_app(*request.param)
+
+
+async def test_cred_no_origin(aiohttp_client, app_for_credentials):
+    app = app_for_credentials
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource")
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_cred_allowed_origin(aiohttp_client, app_for_credentials):
+    app = app_for_credentials
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client1.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for hdr, val in {
+            hdrs.ACCESS_CONTROL_ALLOW_ORIGIN: 'http://client1.example.org',
+            hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS: "true"}.items():
+        assert resp.headers.get(hdr) == val
+
+    for header_name in {
+                hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+    }:
+        assert header_name not in resp.headers
+
+
+async def test_cred_disallowed_origin(aiohttp_client, app_for_credentials):
+    app = app_for_credentials
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client2.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_expose_headers_no_origin(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions(
+                              expose_headers=(SERVER_CUSTOM_HEADER_NAME,))})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource")
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_expose_headers_allowed_origin(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions(
+                              expose_headers=(SERVER_CUSTOM_HEADER_NAME,))})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client1.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for hdr, val in {
+            hdrs.ACCESS_CONTROL_ALLOW_ORIGIN: 'http://client1.example.org',
+            hdrs.ACCESS_CONTROL_EXPOSE_HEADERS:
+            SERVER_CUSTOM_HEADER_NAME}.items():
+        assert resp.headers.get(hdr) == val
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_simple_expose_headers_not_allowed_origin(aiohttp_client,
+                                                        make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions(
+                              expose_headers=(SERVER_CUSTOM_HEADER_NAME,))})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.get("/resource",
+                            headers={hdrs.ORIGIN:
+                                     'http://client2.example.org'})
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert resp_text == TEST_BODY
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_preflight_default_no_origin(aiohttp_client, make_app):
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options("/resource")
+    assert resp.status == 403
+    resp_text = await resp.text()
+    assert "origin header is not specified" in resp_text
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                        hdrs.ACCESS_CONTROL_MAX_AGE,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_METHODS,
+                        hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_preflight_default_no_method(aiohttp_client, make_app):
+
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options("/resource", headers={
+                        hdrs.ORIGIN: "http://client1.example.org",
+                    })
+    assert resp.status == 403
+    resp_text = await resp.text()
+    assert "'Access-Control-Request-Method' header is not specified"\
+        in resp_text
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                        hdrs.ACCESS_CONTROL_MAX_AGE,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_METHODS,
+                        hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_preflight_default_origin_and_method(aiohttp_client, make_app):
+
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options("/resource", headers={
+                        hdrs.ORIGIN: "http://client1.example.org",
+                        hdrs.ACCESS_CONTROL_REQUEST_METHOD: "GET",
+                    })
+    assert resp.status == 200
+    resp_text = await resp.text()
+    assert '' == resp_text
+
+    for hdr, val in {
+            hdrs.ACCESS_CONTROL_ALLOW_ORIGIN: "http://client1.example.org",
+            hdrs.ACCESS_CONTROL_ALLOW_METHODS: "GET"}.items():
+        assert resp.headers.get(hdr) == val
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                        hdrs.ACCESS_CONTROL_MAX_AGE,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_preflight_default_disallowed_origin(aiohttp_client, make_app):
+
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options("/resource", headers={
+        hdrs.ORIGIN: "http://client2.example.org",
+        hdrs.ACCESS_CONTROL_REQUEST_METHOD: "GET",
+    })
+    assert resp.status == 403
+    resp_text = await resp.text()
+    assert "origin 'http://client2.example.org' is not allowed" in resp_text
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                        hdrs.ACCESS_CONTROL_MAX_AGE,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_METHODS,
+                        hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_preflight_default_disallowed_method(aiohttp_client, make_app):
+
+    app = make_app(None, {"http://client1.example.org":
+                          ResourceOptions()})
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options("/resource", headers={
+                        hdrs.ORIGIN: "http://client1.example.org",
+                        hdrs.ACCESS_CONTROL_REQUEST_METHOD: "POST",
+                    })
+    assert resp.status == 403
+    resp_text = await resp.text()
+    assert ("request method 'POST' is not allowed for "
+            "'http://client1.example.org' origin" in resp_text)
+
+    for header_name in {
+                        hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+                        hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+                        hdrs.ACCESS_CONTROL_MAX_AGE,
+                        hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+                        hdrs.ACCESS_CONTROL_ALLOW_METHODS,
+                        hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+                    }:
+        assert header_name not in resp.headers
+
+
+async def test_preflight_req_multiple_routes_with_one_options(aiohttp_client):
+    """Test CORS preflight handling on resource that is available through
+    several routes.
+    """
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers="*",
+        )
+    })
+
+    cors.add(app.router.add_route("GET", "/{name}", handler))
+    cors.add(app.router.add_route("PUT", "/{name}", handler))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        "/user",
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT"
+        }
+    )
+    assert resp.status == 200
+
+    data = await resp.text()
+    assert data == ""
+
+
+async def test_preflight_request_mult_routes_with_one_options_resource(
+        aiohttp_client):
+    """Test CORS preflight handling on resource that is available through
+    several routes.
+    """
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers="*",
+        )
+    })
+
+    resource = cors.add(app.router.add_resource("/{name}"))
+    cors.add(resource.add_route("GET", handler))
+    cors.add(resource.add_route("PUT", handler))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        "/user",
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT"
+        }
+    )
+    assert resp.status == 200
+
+    data = await resp.text()
+    assert data == ""
+
+
+async def test_preflight_request_max_age_resource(aiohttp_client):
+    """Test CORS preflight handling on resource that is available through
+    several routes.
+    """
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers="*",
+            max_age=1200
+        )
+    })
+
+    resource = cors.add(app.router.add_resource("/{name}"))
+    cors.add(resource.add_route("GET", handler))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        "/user",
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "GET"
+        }
+    )
+    assert resp.status == 200
+    assert resp.headers[hdrs.ACCESS_CONTROL_MAX_AGE].upper() == "1200"
+
+    data = await resp.text()
+    assert data == ""
+
+
+async def test_preflight_request_max_age_webview(aiohttp_client):
+    """Test CORS preflight handling on resource that is available through
+    several routes.
+    """
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers="*",
+            max_age=1200
+        )
+    })
+
+    class TestView(web.View, CorsViewMixin):
+        async def get(self):
+            resp = web.Response(text=TEST_BODY)
+
+            resp.headers[SERVER_CUSTOM_HEADER_NAME] = \
+                SERVER_CUSTOM_HEADER_VALUE
+
+            return resp
+
+    cors.add(app.router.add_route("*", "/{name}", TestView))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        "/user",
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "GET"
+        }
+    )
+    assert resp.status == 200
+    assert resp.headers[hdrs.ACCESS_CONTROL_MAX_AGE].upper() == "1200"
+
+    data = await resp.text()
+    assert data == ""
+
+
+async def test_preflight_request_mult_routes_with_one_options_webview(
+        aiohttp_client):
+    """Test CORS preflight handling on resource that is available through
+    several routes.
+    """
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers="*",
+        )
+    })
+
+    class TestView(web.View, CorsViewMixin):
+        async def get(self):
+            resp = web.Response(text=TEST_BODY)
+
+            resp.headers[SERVER_CUSTOM_HEADER_NAME] = \
+                SERVER_CUSTOM_HEADER_VALUE
+
+            return resp
+
+        put = get
+
+    cors.add(app.router.add_route("*", "/{name}", TestView))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        "/user",
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT"
+        }
+    )
+    assert resp.status == 200
+
+    data = await resp.text()
+    assert data == ""
+
+
+async def test_preflight_request_headers_webview(aiohttp_client):
+    """Test CORS preflight request handlers handling."""
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers=("Content-Type", "X-Header"),
+        )
+    })
+
+    class TestView(web.View, CorsViewMixin):
+        async def put(self):
+            response = web.Response(text=TEST_BODY)
+
+            response.headers[SERVER_CUSTOM_HEADER_NAME] = \
+                SERVER_CUSTOM_HEADER_VALUE
+
+            return response
+
+    cors.add(app.router.add_route("*", "/", TestView))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type",
+        }
+    )
+    assert (await resp.text()) == ""
+    assert resp.status == 200
+    # Access-Control-Allow-Headers must be compared in case-insensitive
+    # way.
+    assert (resp.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS].upper() ==
+            "content-type".upper())
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "X-Header,content-type",
+        }
+    )
+    assert resp.status == 200
+    # Access-Control-Allow-Headers must be compared in case-insensitive
+    # way.
+    assert (
+        frozenset(resp.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS]
+                  .upper().split(",")) ==
+        {"X-Header".upper(), "content-type".upper()})
+    assert (await resp.text()) == ""
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type,Test",
+        }
+    )
+    assert resp.status == 403
+    assert hdrs.ACCESS_CONTROL_ALLOW_HEADERS not in resp.headers
+    assert "headers are not allowed: TEST" in (await resp.text())
+
+
+async def test_preflight_request_headers_resource(aiohttp_client):
+    """Test CORS preflight request handlers handling."""
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers=("Content-Type", "X-Header"),
+        )
+    })
+
+    cors.add(app.router.add_route("PUT", "/", handler))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type",
+        }
+    )
+    assert (await resp.text()) == ""
+    assert resp.status == 200
+    # Access-Control-Allow-Headers must be compared in case-insensitive
+    # way.
+    assert (
+        resp.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS].upper() ==
+        "content-type".upper())
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "X-Header,content-type",
+        }
+    )
+    assert resp.status == 200
+    # Access-Control-Allow-Headers must be compared in case-insensitive
+    # way.
+    assert (
+        frozenset(resp.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS]
+                  .upper().split(",")) ==
+        {"X-Header".upper(), "content-type".upper()})
+    assert (await resp.text()) == ""
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type,Test",
+        }
+    )
+    assert resp.status == 403
+    assert hdrs.ACCESS_CONTROL_ALLOW_HEADERS not in resp.headers
+    assert "headers are not allowed: TEST" in (await resp.text())
+
+
+async def test_preflight_request_headers(aiohttp_client):
+    """Test CORS preflight request handlers handling."""
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_headers=("Content-Type", "X-Header"),
+        )
+    })
+
+    resource = cors.add(app.router.add_resource("/"))
+    cors.add(resource.add_route("PUT", handler))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type",
+        }
+    )
+    assert (await resp.text()) == ""
+    assert resp.status == 200
+    # Access-Control-Allow-Headers must be compared in case-insensitive
+    # way.
+    assert (
+        resp.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS].upper() ==
+        "content-type".upper())
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "X-Header,content-type",
+        }
+    )
+    assert resp.status == 200
+    # Access-Control-Allow-Headers must be compared in case-insensitive
+    # way.
+    assert (
+        frozenset(resp.headers[hdrs.ACCESS_CONTROL_ALLOW_HEADERS]
+                  .upper().split(",")) ==
+        {"X-Header".upper(), "content-type".upper()})
+    assert (await resp.text()) == ""
+
+    resp = await client.options(
+        '/',
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "PUT",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type,Test",
+        }
+    )
+    assert resp.status == 403
+    assert hdrs.ACCESS_CONTROL_ALLOW_HEADERS not in resp.headers
+    assert "headers are not allowed: TEST" in (await resp.text())
+
+
+async def test_static_route(aiohttp_client):
+    """Test a static route with CORS."""
+    app = web.Application()
+    cors = _setup(app, defaults={
+        "*": ResourceOptions(
+            allow_credentials=True,
+            expose_headers="*",
+            allow_methods="*",
+            allow_headers=("Content-Type", "X-Header"),
+        )
+    })
+
+    test_static_path = pathlib.Path(__file__).parent
+    cors.add(app.router.add_static("/static", test_static_path,
+                                   name='static'))
+
+    client = await aiohttp_client(app)
+
+    resp = await client.options(
+        "/static/test_page.html",
+        headers={
+            hdrs.ORIGIN: "http://example.org",
+            hdrs.ACCESS_CONTROL_REQUEST_METHOD: "OPTIONS",
+            hdrs.ACCESS_CONTROL_REQUEST_HEADERS: "content-type",
+        }
+    )
+    data = await resp.text()
+    assert resp.status == 200
+    assert data == ''
+
+
+# TODO: test requesting resources with not configured CORS.
+# TODO: test wildcard origin in default config.
+# TODO: test different combinations of ResourceOptions options.
+# TODO: remove deplication of resource/not resource configuration using
+# pytest's fixtures.

aiohttp_cors/tests/integration/test_page.html

@@ -0,0 +1,473 @@
+<!DOCTYPE html>
+<html lang="en-US">
+<head>
+  <meta charset="utf-8">
+  <title>aiohttp_cors testing</title>
+  <style>
+    body {
+      width: 900px;
+      margin: 0 auto;
+    }
+
+    textarea.results {
+      width: 100%;
+      height: 400px;
+    }
+
+    .serverAddressLabel {
+      display: block;
+      float: left;
+      width: 400px;
+    }
+
+    .templates {
+      display: none;
+    }
+  </style>
+</head>
+<body>
+  <div class="templates">
+    <div id="serverAddressTemplate">
+      <label>
+        <span id="label" class="serverAddressLabel"></span>
+        <input id="input" type="text">
+      </label>
+    </div>
+  </div>
+
+  <form name="test" id="testForm">
+    <div>
+      <input id="fillOutButton" value="Fill out addresses" type="button">
+      <input id="runTestsButton" value="Run tests" type="submit" disabled>
+      <input id="clearResultsButton" value="Clear results" type="button" disabled>
+    </div>
+  </form>
+  <div id="log" class="log">
+  </div>
+  <textarea id="results" class="results">
+  </textarea>
+
+<script>
+(window.cors = (function() {
+  'strict';
+
+  // Copyright 2015 Vladimir Rutsky <[email protected]>
+  // Licensed under the Apache License, Version 2.0.
+
+  var serversNames = [
+    'origin', 'allowing', 'denying', 'free_for_all', 'no_cors'
+  ];
+
+  var tests = {
+    'GET no_cors.json': {
+      // Resource without CORS configuration can be obtained only from origin.
+      method: 'GET',
+      path: 'no_cors.json',
+      allowed: {
+        'origin': true,
+        'allowing': false,
+        'denying': false,
+        'free_for_all': false,
+        'no_cors': false
+      }
+    },
+    'GET cors_resource default': {
+      // Resource with CORS configuration can be obtained only according to
+      // CORS configuration.
+      method: 'GET',
+      path: 'cors_resource',
+      allowed: {
+        'origin': true,
+        'allowing': true,
+        'denying': false,
+        'free_for_all': true,
+        'no_cors': false
+      }
+    },
+    'GET cors_resource with credentials': {
+      // Should be same as without credentials on this route.
+      method: 'GET',
+      path: 'cors_resource',
+      withCredentials: true,
+      allowed: {
+        'origin': true,
+        'allowing': true,
+        'denying': false,
+        'free_for_all': true,
+        'no_cors': false
+      }
+    }
+  };
+
+  function logMessage(level, args) {
+    console[level].apply(console, args);
+
+    var logContainer = document.getElementById('log');
+
+    var logEntry = document.createElement('div');
+    logEntry.classList.add(level);
+
+    var i;
+    for (i = 0; i !== args.length; ++i) {
+      var partData = args[i];
+      var part = document.createElement('span');
+      var txt = document.createTextNode(partData + '');
+      part.appendChild(txt);
+      logEntry.appendChild(part);
+    }
+
+    logContainer.appendChild(logEntry);
+  }
+
+  function log() {
+    logMessage('log', arguments);
+  }
+
+  function error() {
+    logMessage('error', arguments);
+  }
+
+  // Based on an example from <http://www.html5rocks.com/en/tutorials/cors/>.
+  function createCORSRequest(method, url) {
+    var xhr = new XMLHttpRequest();
+    if ('withCredentials' in xhr) {
+      // Check if the XMLHttpRequest object has a 'withCredentials' property.
+      // 'withCredentials' only exists on XMLHTTPRequest2 objects.
+      xhr.open(method, url, true);
+
+    } else if (typeof XDomainRequest !== 'undefined') {
+      // Otherwise, check if XDomainRequest.
+      // XDomainRequest only exists in IE, and is IE's way of making CORS
+      // requests.
+      xhr = new XDomainRequest();
+      xhr.open(method, url);
+
+    } else {
+      // Otherwise, CORS is not supported by the browser.
+      xhr = null;
+    }
+    return xhr;
+  }
+
+  function runTest(testName, resourceUrl, testData, expected, onTestDone) {
+    var xhr = createCORSRequest(testData.method, resourceUrl);
+
+    function done(isResourceObtained) {
+      var result = {};
+
+      var testSucceed = (isResourceObtained === expected);
+      result.status = (testSucceed ? 'success' : 'fail');
+
+      result.data = {
+        responseType: xhr.responseType,
+        response: xhr.response,
+        status: xhr.status,
+        responseHeaders: xhr.getAllResponseHeaders()
+      };
+
+      if (!testSucceed) {
+        error('Test ' + testName + ' failed', result.data);
+      }
+
+      onTestDone(result);
+    }
+
+    if (testData.withCredentials) {
+      xhr.withCredentials = true;
+    }
+
+    xhr.onload = function() {
+      if (xhr.status === 200) {
+        done(true);
+      } else {
+        done(false);
+      }
+    };
+    xhr.onerror = function() {
+      done(false);
+    };
+
+    xhr.send();
+  }
+
+  function onTestDone(state, testName, allDoneCallback, result) {
+    state.allResults[testName] = result;
+    --state.remainingTests;
+
+    if (state.remainingTests === 0) {
+      allDoneCallback(state.allResults);
+    }
+  }
+
+  function countTestsNumber(tests) {
+    var numTests = 0;
+
+    var testName;
+    for (testName in tests) {
+      var test = tests[testName];
+
+      var serverName;
+      for (serverName in test.allowed) {
+        ++numTests;
+      }
+    }
+
+    return numTests;
+  }
+
+  function runAllTests(serversURLs, tests, doneCallback) {
+    var state = {
+      allResults: {},
+      remainingTests: 0
+    };
+
+    state.remainingTests = countTestsNumber(tests);
+
+    var testName;
+    for (testName in tests) {
+      var testData = tests[testName];
+
+      var serverName;
+      for (serverName in testData.allowed) {
+        var expected = testData.allowed[serverName];
+        var serverUrl = serversURLs[serverName];
+        console.assert(serverUrl);
+        var resourceUrl = serverUrl + testData.path;
+
+        var subTestName = testName + '[' + serverName + ']';
+
+        runTest(subTestName, resourceUrl, testData, expected,
+          onTestDone.bind(null, state, subTestName, doneCallback));
+      }
+    }
+  }
+
+  function setResults(object) {
+    var results = document.getElementById('results');
+    results.value = JSON.stringify(object, null, ' ');
+  }
+
+  function setExceptionAsResult(ex) {
+    error(ex);
+
+    setResults({
+      'status': 'error',
+      'error': ex.toString(),
+      'data': {
+        message: ex.message,
+        // Firefox-specific
+        fileName: ex.fileName,
+        lineNumber: ex.lineNumber,
+        columnNumber: ex.columnNumber,
+        stack: ex.stack,
+        // IE-specific
+        description: ex.description
+      }
+    });
+  }
+
+  function serverInputId(serverName) {
+    return 'server_' + serverName;
+  }
+
+  function formatTemplate(node, serverName) {
+    if (node.id === 'label') {
+      node.innerHTML = 'address of "' + serverName + '" server:';
+      node.removeAttribute('id');
+    }
+
+    if (node.id === 'input') {
+      node.id = serverInputId(serverName);
+    }
+
+    var i;
+    for (i = 0; i !== node.children.length; ++i) {
+      formatTemplate(node.children[i], serverName);
+    }
+  }
+
+  function createAddressInputFields() {
+    var template = document.getElementById('serverAddressTemplate');
+    var testForm = document.getElementById('testForm');
+
+    var i;
+    for (i = 0; i !== serversNames.length; ++i) {
+      var serverName = serversNames[i];
+
+      var node = template.cloneNode(true);
+      node.removeAttribute('id');
+
+      formatTemplate(node, serverName);
+
+      testForm.insertBefore(node, testForm.firstChild);
+    }
+  }
+
+  function setServerAddr(serverName, value) {
+    var input = document.getElementById(serverInputId(serverName));
+    input.value = value;
+  }
+
+  function getServerAddrOptional(serverName) {
+    var input = document.getElementById(serverInputId(serverName));
+    var addr = input.value;
+    if (!addr) {
+      return null;
+    }
+
+    if (addr[addr.length - 1] !== '/') {
+      addr += '/';
+    }
+
+    return addr;
+  }
+
+  function getServerAddr(serverName) {
+    var addr = getServerAddrOptional(serverName);
+
+    if (!addr) {
+      throw new Error(
+        'Server address for "' + serverName + '" is not specified');
+    }
+
+    return addr;
+  }
+
+  function getServersUrls() {
+    var serverUrls = {};
+
+    var i;
+    for (i = 0; i !== serversNames.length; ++i) {
+      var serverName = serversNames[i];
+      serverUrls[serverName] = getServerAddr(serverName);
+    }
+
+    return serverUrls;
+  }
+
+  function setServersUrls(serverUrls) {
+    var serverName;
+    for (serverName in serverUrls) {
+      setServerAddr(serverName, serverUrls[serverName]);
+    }
+  }
+
+  function runTests() {
+    setTestingStarted();
+
+    var results = document.getElementById('results');
+
+    try {
+      var serversURLs = getServersUrls();
+      results = runAllTests(serversURLs, tests, function(results) {
+        setResults({
+          'status': 'success',
+          'data': results
+        });
+
+        var numFailed = 0;
+        var numTests = 0;
+        var failedTests = {};
+        var testName;
+        for (testName in results) {
+          ++numTests;
+          if (results[testName].status !== 'success') {
+            ++numFailed;
+            failedTests[testName] = results[testName];
+          }
+        }
+
+        if (numFailed > 0) {
+          error(
+            'Failed ' + numFailed + ' tests of ' + numTests, failedTests);
+        } else {
+          log('All ' + numTests + ' tests passed');
+        }
+
+        setTestingFinished();
+      });
+    } catch(ex) {
+      setExceptionAsResult(ex);
+    }
+  }
+
+  function fillOutAddresses(callback) {
+    var originAddr = getServerAddrOptional('origin');
+    if (!originAddr) {
+      originAddr = '/';
+    }
+    var addressesUrl = originAddr + 'servers_addresses';
+    var xhr = createCORSRequest('GET', addressesUrl);
+
+    xhr.onload = function() {
+      if (xhr.status !== 200) {
+        error(
+          '/servers_addresses request failed with status ' + xhr.status,
+          xhr.responseText);
+
+      } else {
+        log('Received server addresses:', xhr.response);
+        setServersUrls(JSON.parse(xhr.responseText));
+      }
+
+      if (typeof callback !== 'undefined') {
+        callback();
+      }
+    };
+
+    xhr.onerror = function() {
+      error('/servers_addresses request failed');
+    };
+
+    xhr.send();
+  }
+
+  function setReadyToStartTesting() {
+    var runButton = document.getElementById('runTestsButton');
+    runButton.disabled = false;
+  }
+
+  function setTestingStarted() {
+    var runButton = document.getElementById('runTestsButton');
+    var clearButton = document.getElementById('clearResultsButton');
+    runButton.disabled = true;
+    clearButton.disabled = true;
+  }
+
+  function setTestingFinished() {
+    var runButton = document.getElementById('runTestsButton');
+    var clearButton = document.getElementById('clearResultsButton');
+    runButton.disabled = false;
+    clearButton.disabled = false;
+  }
+
+  return {
+    runTests: runTests,
+    fillOutAddresses: fillOutAddresses,
+    createAddressInputFields: createAddressInputFields,
+    setReadyToStartTesting: setReadyToStartTesting
+  };
+}()));
+
+(function() {
+  var cors = window.cors;
+
+  cors.createAddressInputFields();
+
+  var testForm = document.getElementById('testForm');
+  testForm.onsubmit = function() {
+    cors.runTests();
+    return false;
+  };
+
+  var fillOutButton = document.getElementById('fillOutButton');
+  fillOutButton.onclick = function() {
+    cors.fillOutAddresses();
+    return false;
+  };
+
+  cors.fillOutAddresses(cors.setReadyToStartTesting);
+}());
+</script>
+</body>
+</html>

aiohttp_cors/tests/integration/test_real_browser.py

@@ -0,0 +1,316 @@
+# Copyright 2015 Vladimir Rutsky <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""System test using real browser.
+"""
+
+import os
+import json
+import asyncio
+import socket
+import pathlib
+import logging
+import webbrowser
+
+from aiohttp import web, hdrs
+import pytest
+
+import selenium.common.exceptions
+from selenium import webdriver
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.common.keys import Keys
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support import expected_conditions as EC
+
+from aiohttp_cors import setup as _setup, ResourceOptions, CorsViewMixin
+
+
+class _ServerDescr:
+    """Auxiliary class for storing server info"""
+
+    def __init__(self):
+        self.app = None
+        self.cors = None
+        self.handler = None
+        self.server = None
+        self.url = None
+
+
+class IntegrationServers:
+    """Integration servers starting/stopping manager"""
+
+    def __init__(self, use_resources, use_webview, *, loop=None):
+        self.servers = {}
+
+        self.loop = loop
+        if self.loop is None:
+            self.loop = asyncio.get_event_loop()
+
+        self.use_resources = use_resources
+        self.use_webview = use_webview
+
+        self._logger = logging.getLogger("IntegrationServers")
+
+    @property
+    def origin_server_url(self):
+        return self.servers["origin"].url
+
+    async def start_servers(self):
+        test_page_path = pathlib.Path(__file__).with_name("test_page.html")
+
+        async def handle_test_page(request: web.Request) -> web.StreamResponse:
+            with test_page_path.open("r", encoding="utf-8") as f:
+                return web.Response(
+                    text=f.read(),
+                    headers={hdrs.CONTENT_TYPE: "text/html"})
+
+        async def handle_no_cors(request: web.Request) -> web.StreamResponse:
+            return web.Response(
+                text="""{"type": "no_cors.json"}""",
+                headers={hdrs.CONTENT_TYPE: "application/json"})
+
+        async def handle_resource(request: web.Request) -> web.StreamResponse:
+            return web.Response(
+                text="""{"type": "resource"}""",
+                headers={hdrs.CONTENT_TYPE: "application/json"})
+
+        async def handle_servers_addresses(
+                request: web.Request) -> web.StreamResponse:
+            servers_addresses = \
+                {name: descr.url for name, descr in self.servers.items()}
+            return web.Response(
+                text=json.dumps(servers_addresses))
+
+        class ResourceView(web.View, CorsViewMixin):
+
+            async def get(self) -> web.StreamResponse:
+                return await handle_resource(self.request)
+
+        # For most resources:
+        # "origin" server has no CORS configuration.
+        # "allowing" server explicitly allows CORS requests to "origin" server.
+        # "denying" server explicitly disallows CORS requests to "origin"
+        # server.
+        # "free_for_all" server allows CORS requests for all origins server.
+        # "no_cors" server has no CORS configuration.
+        cors_server_names = ["allowing", "denying", "free_for_all"]
+        server_names = cors_server_names + ["origin", "no_cors"]
+
+        for server_name in server_names:
+            assert server_name not in self.servers
+            self.servers[server_name] = _ServerDescr()
+
+        server_sockets = {}
+
+        # Create applications and sockets.
+        for server_name, server_descr in self.servers.items():
+            server_descr.app = web.Application()
+
+            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            sock.bind(("127.0.0.1", 0))
+            sock.listen(10)
+            server_sockets[server_name] = sock
+
+            hostaddr, port = sock.getsockname()
+            server_descr.url = "http://{host}:{port}".format(
+                host=hostaddr, port=port)
+
+        # Server test page from origin server.
+        self.servers["origin"].app.router.add_route(
+            "GET", "/", handle_test_page)
+        self.servers["origin"].app.router.add_route(
+            "GET", "/servers_addresses", handle_servers_addresses)
+
+        # Add routes to all servers.
+        for server_name in server_names:
+            app = self.servers[server_name].app
+            app.router.add_route("GET", "/no_cors.json", handle_no_cors)
+            if self.use_webview:
+                app.router.add_route("*", "/cors_resource", ResourceView,
+                                     name="cors_resource")
+            else:
+                app.router.add_route("GET", "/cors_resource", handle_resource,
+                                     name="cors_resource")
+
+        cors_default_configs = {
+            "allowing": {
+                self.servers["origin"].url:
+                    ResourceOptions(
+                        allow_credentials=True, expose_headers="*",
+                        allow_headers="*")
+            },
+            "denying": {
+                # Allow requests to other than "origin" server.
+                self.servers["allowing"].url:
+                    ResourceOptions(
+                        allow_credentials=True, expose_headers="*",
+                        allow_headers="*")
+            },
+            "free_for_all": {
+                "*":
+                    ResourceOptions(
+                        allow_credentials=True, expose_headers="*",
+                        allow_headers="*")
+            },
+        }
+
+        # Configure CORS.
+        for server_name, server_descr in self.servers.items():
+            default_config = cors_default_configs.get(server_name)
+            if default_config is None:
+                continue
+            server_descr.cors = _setup(
+                server_descr.app, defaults=default_config)
+
+        # Add CORS routes.
+        for server_name in cors_server_names:
+            server_descr = self.servers[server_name]
+            # TODO: Starting from aiohttp 0.21.0 name-based access returns
+            # Resource, not Route. Manually get route while aiohttp_cors
+            # doesn't support configuring for Resources.
+            resource = server_descr.app.router["cors_resource"]
+            route = next(iter(resource))
+            if self.use_resources:
+                server_descr.cors.add(resource)
+                server_descr.cors.add(route)
+
+            elif self.use_webview:
+                server_descr.cors.add(route)
+
+            else:
+                server_descr.cors.add(route)
+
+        # Start servers.
+        for server_name, server_descr in self.servers.items():
+            runner = web.AppRunner(server_descr.app)
+            await runner.setup()
+            site = web.SockSite(runner, server_sockets[server_name])
+            await site.start()
+            server_descr.runner = runner
+
+            self._logger.info("Started server '%s' at '%s'",
+                              server_name, server_descr.url)
+
+    async def stop_servers(self):
+        for server_descr in self.servers.values():
+            runner = server_descr.runner
+            await runner.shutdown()
+            await runner.cleanup()
+
+        self.servers = {}
+
+
+def _get_chrome_driver():
+    driver_path_env = "WEBDRIVER_CHROMEDRIVER_PATH"
+
+    if driver_path_env in os.environ:
+        driver = webdriver.Chrome(executable_path=os.environ[driver_path_env])
+    else:
+        driver = webdriver.Chrome()
+
+    return driver
+
+
+@pytest.fixture(params=[(False, False),
+                        (True, False),
+                        (False, True)])
+def server(request, loop):
+    async def inner():
+        # to grab implicit loop
+        return IntegrationServers(*request.param)
+    return loop.run_until_complete(inner())
+
+
+@pytest.fixture(params=[webdriver.Firefox,
+                        _get_chrome_driver])
+def driver(request):
+    try:
+        driver = request.param()
+    except selenium.common.exceptions.WebDriverException:
+        pytest.skip("Driver is not supported")
+
+    yield driver
+    driver.close()
+
+
+async def test_in_webdriver(driver, server):
+    loop = asyncio.get_event_loop()
+    await server.start_servers()
+
+    def selenium_thread():
+        driver.get(server.origin_server_url)
+        assert "aiohttp_cors" in driver.title
+
+        wait = WebDriverWait(driver, 10)
+
+        run_button = wait.until(EC.element_to_be_clickable(
+            (By.ID, "runTestsButton")))
+
+        # Start tests.
+        run_button.send_keys(Keys.RETURN)
+
+        # Wait while test will finish (until clear button is not
+        # activated).
+        wait.until(EC.element_to_be_clickable(
+            (By.ID, "clearResultsButton")))
+
+        # Get results json
+        results_area = driver.find_element_by_id("results")
+
+        return json.loads(results_area.get_attribute("value"))
+
+    try:
+        results = await loop.run_in_executor(
+            None, selenium_thread)
+
+        assert results["status"] == "success"
+        for test_name, test_data in results["data"].items():
+            assert test_data["status"] == "success"
+
+    finally:
+        await server.stop_servers()
+
+
+def _run_integration_server():
+    """Runs integration server for interactive debugging."""
+
+    logging.basicConfig(level=logging.INFO)
+
+    logger = logging.getLogger("run_integration_server")
+
+    loop = asyncio.get_event_loop()
+
+    servers = IntegrationServers(False, True)
+    logger.info("Starting integration servers...")
+    loop.run_until_complete(servers.start_servers())
+
+    try:
+        webbrowser.open(servers.origin_server_url)
+    except webbrowser.Error:
+        pass
+
+    try:
+        loop.run_forever()
+    except KeyboardInterrupt:
+        pass
+    finally:
+        logger.info("Stopping integration servers...")
+        loop.run_until_complete(servers.stop_servers())
+
+
+if __name__ == "__main__":
+    # This module can be run in the following way:
+    #     $ python -m tests.integration.test_real_browser
+    # from aiohttp_cors root directory.
+    _run_integration_server()