Include a launcher manifest for console scripts to prevent undesirable UAC...

Include a launcher manifest for console scripts to prevent undesirable UAC elevation for scripts detected as installers (such as easy_install). Fixes #143.

--HG--
branch : distribute
extra : rebase_source : be6f65eea9c10ce78b6698d8c220b6e5de577292

CHANGES.txt

@@ -2,6 +2,16 @@
 CHANGES
 =======
 
+------
+0.6.37
+------
+
+* Issue #143: Launcher scripts, including easy_install itself, are now
+  accompanied by a manifest on 32-bit Windows environments to avoid the
+  Installer Detection Technology and thus undesirable UAC elevation described
+  in `this Microsoft article
+  <http://technet.microsoft.com/en-us/library/cc709628%28WS.10%29.aspx>`_.
+
 ------
 0.6.36
 ------

setuptools/command/easy_install.py

@@ -20,6 +20,7 @@ import re
 import stat
 import random
 from glob import glob
+import pkg_resources
 from setuptools import Command, _dont_write_bytecode
 from setuptools.sandbox import run_setup
 from distutils import log, dir_util
@@ -1851,11 +1852,23 @@ def get_script_args(dist, executable=sys_executable, wininst=False):
                     name+'.exe', resource_string('setuptools', launcher),
                     'b' # write in binary mode
                 )
+                if not is_64bit():
+                    # install a manifest for the launcher to prevent Windows
+                    #  from detecting it as an installer (which it will for
+                    #  launchers like easy_install.exe). Consider only
+                    #  adding a manifest for launchers detected as installers.
+                    #  See Distribute #143 for details.
+                    m_name = name + '.exe.manifest'
+                    yield (m_name, load_launcher_manifest(name), 't')
             else:
                 # On other platforms, we assume the right thing to do is to
                 # just write the stub with no extension.
                 yield (name, header+script_text)
 
+def load_launcher_manifest(name):
+    manifest = pkg_resources.resource_string(__name__, 'launcher manifest.xml')
+    return manifest % vars()
+
 def rmtree(path, ignore_errors=False, onerror=auto_chmod):
     """Recursively delete a directory tree.
 

setuptools/command/launcher manifest.xml

+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+<assemblyIdentity version="1.0.0.0"
+    processorArchitecture="X86"
+    name="%(name)s"
+    type="win32"/>
+    <!-- Identify the application security requirements. -->
+    <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
+    <security>
+        <requestedPrivileges>
+            <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
+        </requestedPrivileges>
+    </security>
+    </trustInfo>
+</assembly>