upstream/mercurial-mirror Files · contrib/win32/hgwebdir_wsgi.py

rust-cpython: mark all PyLeaked methods as unsafe...

rust-cpython: mark all PyLeaked methods as unsafe Unfortunately, these methods can be abused to obtain the inner 'static reference. The simplest (pseudo-code) example is: let leaked: PyLeaked<&'static _> = shared.leak_immutable(); let static_ref: &'static _ = &*leaked.try_borrow(py)?; // PyLeakedRef::deref() tries to bound the lifetime to itself, but // the underlying data is a &'static reference, so the returned // reference can be &'static. This problem can be easily fixed by coercing the lifetime, but there are many other ways to achieve that, and there wouldn't be a generic solution: let leaked: PyLeaked<&'static [_]> = shared.leak_immutable(); let leaked_iter: PyLeaked<slice::Iter<'static, _>> = unsafe { leaked.map(|v| v.iter()) }; let static_slice: &'static [_] = leaked_iter.try_borrow(py)?.as_slice(); So basically I failed to design the safe borrowing interface. Maybe we'll instead have to add much more restricted interface on top of the unsafe PyLeaked methods? For instance, Iterator::next() could be implemented if its Item type is not &'a (where 'a may be cheated.) Anyway, this seems not an easy issue, so it's probably better to leave the current interface as unsafe, and get broader comments while upstreaming this feature.

Augie Fackler - - Load All Authors

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      # An example WSGI script for IIS/isapi-wsgi to export multiple hgweb repos

      # Copyright 2010-2016 Sune Foldager <cyano@me.com>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      #

      # Requirements:

      # - Python 2.7, preferably 64 bit

      # - Mercurial installed from source (python setup.py install) or download the

      #   python module installer from https://www.mercurial-scm.org/wiki/Download

      # - IIS 7 or newer

      #

      #

      # Installation and use:

      #

      # - Download or clone the isapi-wsgi source and run python setup.py install.

      #   https://github.com/hexdump42/isapi-wsgi

      #

      # - Create a directory to hold the shim dll, config files etc. This can reside

      #   inside the standard IIS directory, C:\inetpub, or anywhere else. Copy this

      #   script there.

      #

      # - Run this script (i.e. python hgwebdir_wsgi.py) to get a shim dll. The

      #   shim is identical for all scripts, so you can just copy and rename one

      #   from an earlier run, if you wish. The shim needs to reside in the same

      #   directory as this script.

      #

      # - Start IIS manager and create a new app pool:

      #   .NET CLR Version: No Managed Code

      #   Advanced Settings: Enable 32 Bit Applications, if using 32 bit Python.

      #   You can adjust the identity and maximum worker processes if you wish. This

      #   setup works fine with multiple worker processes.

      #

      # - Create an IIS application where your hgwebdir is to be served from.

      #   Assign it the app pool you just created and point its physical path to the

      #   directory you created.

      #

      # - In the application, remove all handler mappings and setup a wildcard script

      #   handler mapping of type IsapiModule with the shim dll as its executable.

      #   This file MUST reside in the same directory as the shim. The easiest way

      #   to do all this is to close IIS manager, place a web.config file in your

      #   directory and start IIS manager again. The file should contain:

      #

      #   <?xml version="1.0" encoding="UTF-8"?>

      #   <configuration>

      #       <system.webServer>

      #           <handlers accessPolicy="Read, Script">

      #               <clear />

      #               <add name="hgwebdir" path="*" verb="*" modules="IsapiModule"

      #                    scriptProcessor="C:\your\directory\_hgwebdir_wsgi.dll"

      #                    resourceType="Unspecified" requireAccess="None"

      #                    preCondition="bitness64" />

      #           </handlers>

      #       </system.webServer>

      #   </configuration>

      #

      #   Where "bitness64" should be replaced with "bitness32" for 32 bit Python.

      #

      # - Edit ISAPI And CGI Restrictions on the web server (global setting). Add a

      #   restriction pointing to your shim dll and allow it to run.

      #

      # - Create a configuration file in your directory and adjust the configuration

      #   variables below to match your needs. Example configuration:

      #

      #   [web]

      #   style = gitweb

      #   push_ssl = false

      #   allow_push = *

      #   encoding = utf8

      #

      #   [server]

      #   validate = true

      #

      #   [paths]

      #   repo1 = c:\your\directory\repo1

      #   repo2 = c:\your\directory\repo2

      #

      # - Restart the web server and see if things are running.

      #

      from __future__ import absolute_import

      # Configuration file location

      hgweb_config = r'c:\your\directory\wsgi.config'

      # Global settings for IIS path translation

      path_strip = 0  # Strip this many path elements off (when using url rewrite)

      path_prefix = 1  # This many path elements are prefixes (depends on the

      # virtual path of the IIS application).

      import sys

      # Adjust python path if this is not a system-wide install

      # sys.path.insert(0, r'C:\your\custom\hg\build\lib.win32-2.7')

      # Enable tracing. Run 'python -m win32traceutil' to debug

      if getattr(sys, 'isapidllhandle', None) is not None:

          import win32traceutil

          win32traceutil.SetupForPrint  # silence unused import warning

      import isapi_wsgi

      from mercurial.hgweb.hgwebdir_mod import hgwebdir

      # Example tweak: Replace isapi_wsgi's handler to provide better error message

      # Other stuff could also be done here, like logging errors etc.

      class WsgiHandler(isapi_wsgi.IsapiWsgiHandler):

          error_status = '500 Internal Server Error'  # less silly error message

      isapi_wsgi.IsapiWsgiHandler = WsgiHandler

      # Only create the hgwebdir instance once

      application = hgwebdir(hgweb_config)

      def handler(environ, start_response):

          # Translate IIS's weird URLs

          url = environ['SCRIPT_NAME'] + environ['PATH_INFO']

          paths = url[1:].split('/')[path_strip:]

          script_name = '/' + '/'.join(paths[:path_prefix])

          path_info = '/'.join(paths[path_prefix:])

          if path_info:

              path_info = '/' + path_info

          environ['SCRIPT_NAME'] = script_name

          environ['PATH_INFO'] = path_info

          return application(environ, start_response)

      def __ExtensionFactory__():

          return isapi_wsgi.ISAPISimpleHandler(handler)

      if __name__ == '__main__':

          from isapi.install import ISAPIParameters, HandleCommandLine

          params = ISAPIParameters()

          HandleCommandLine(params)

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				# An example WSGI script for IIS/isapi-wsgi to export multiple hgweb repos
				# Copyright 2010-2016 Sune Foldager <cyano@me.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.
				#
				# Requirements:
				# - Python 2.7, preferably 64 bit
				# - Mercurial installed from source (python setup.py install) or download the
				# python module installer from https://www.mercurial-scm.org/wiki/Download
				# - IIS 7 or newer
				#
				#
				# Installation and use:
				#
				# - Download or clone the isapi-wsgi source and run python setup.py install.
				# https://github.com/hexdump42/isapi-wsgi
				#
				# - Create a directory to hold the shim dll, config files etc. This can reside
				# inside the standard IIS directory, C:\inetpub, or anywhere else. Copy this
				# script there.
				#
				# - Run this script (i.e. python hgwebdir_wsgi.py) to get a shim dll. The
				# shim is identical for all scripts, so you can just copy and rename one
				# from an earlier run, if you wish. The shim needs to reside in the same
				# directory as this script.
				#
				# - Start IIS manager and create a new app pool:
				# .NET CLR Version: No Managed Code
				# Advanced Settings: Enable 32 Bit Applications, if using 32 bit Python.
				# You can adjust the identity and maximum worker processes if you wish. This
				# setup works fine with multiple worker processes.
				#
				# - Create an IIS application where your hgwebdir is to be served from.
				# Assign it the app pool you just created and point its physical path to the
				# directory you created.
				#
				# - In the application, remove all handler mappings and setup a wildcard script
				# handler mapping of type IsapiModule with the shim dll as its executable.
				# This file MUST reside in the same directory as the shim. The easiest way
				# to do all this is to close IIS manager, place a web.config file in your
				# directory and start IIS manager again. The file should contain:
				#
				# <?xml version="1.0" encoding="UTF-8"?>
				# <configuration>
				# <system.webServer>
				# <handlers accessPolicy="Read, Script">
				# <clear />
				# <add name="hgwebdir" path="" verb="" modules="IsapiModule"
				# scriptProcessor="C:\your\directory\_hgwebdir_wsgi.dll"
				# resourceType="Unspecified" requireAccess="None"
				# preCondition="bitness64" />
				# </handlers>
				# </system.webServer>
				# </configuration>
				#
				# Where "bitness64" should be replaced with "bitness32" for 32 bit Python.
				#
				# - Edit ISAPI And CGI Restrictions on the web server (global setting). Add a
				# restriction pointing to your shim dll and allow it to run.
				#
				# - Create a configuration file in your directory and adjust the configuration
				# variables below to match your needs. Example configuration:
				#
				# [web]
				# style = gitweb
				# push_ssl = false
				# allow_push = *
				# encoding = utf8
				#
				# [server]
				# validate = true
				#
				# [paths]
				# repo1 = c:\your\directory\repo1
				# repo2 = c:\your\directory\repo2
				#
				# - Restart the web server and see if things are running.
				#

				from __future__ import absolute_import

				# Configuration file location
				hgweb_config = r'c:\your\directory\wsgi.config'

				# Global settings for IIS path translation
				path_strip = 0 # Strip this many path elements off (when using url rewrite)
				path_prefix = 1 # This many path elements are prefixes (depends on the
				# virtual path of the IIS application).

				import sys

				# Adjust python path if this is not a system-wide install
				# sys.path.insert(0, r'C:\your\custom\hg\build\lib.win32-2.7')

				# Enable tracing. Run 'python -m win32traceutil' to debug
				if getattr(sys, 'isapidllhandle', None) is not None:
				import win32traceutil

				win32traceutil.SetupForPrint # silence unused import warning

				import isapi_wsgi
				from mercurial.hgweb.hgwebdir_mod import hgwebdir

				# Example tweak: Replace isapi_wsgi's handler to provide better error message
				# Other stuff could also be done here, like logging errors etc.
				class WsgiHandler(isapi_wsgi.IsapiWsgiHandler):
				error_status = '500 Internal Server Error' # less silly error message


				isapi_wsgi.IsapiWsgiHandler = WsgiHandler

				# Only create the hgwebdir instance once
				application = hgwebdir(hgweb_config)


				def handler(environ, start_response):

				# Translate IIS's weird URLs
				url = environ['SCRIPT_NAME'] + environ['PATH_INFO']
				paths = url[1:].split('/')[path_strip:]
				script_name = '/' + '/'.join(paths[:path_prefix])
				path_info = '/'.join(paths[path_prefix:])
				if path_info:
				path_info = '/' + path_info
				environ['SCRIPT_NAME'] = script_name
				environ['PATH_INFO'] = path_info

				return application(environ, start_response)


				def __ExtensionFactory__():
				return isapi_wsgi.ISAPISimpleHandler(handler)


				if __name__ == '__main__':
				from isapi.install import ISAPIParameters, HandleCommandLine

				params = ISAPIParameters()
				HandleCommandLine(params)