--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKitTools/Scripts/webkitpy/common/net/credentials.py	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,126 @@
+# Copyright (c) 2009 Google Inc. All rights reserved.
+# Copyright (c) 2009 Apple Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Python module for reading stored web credentials from the OS.
+
+import getpass
+import os
+import platform
+import re
+
+from webkitpy.common.checkout.scm import Git
+from webkitpy.common.system.executive import Executive, ScriptError
+from webkitpy.common.system.user import User
+from webkitpy.common.system.deprecated_logging import log
+
+
+class Credentials(object):
+
+    def __init__(self, host, git_prefix=None, executive=None, cwd=os.getcwd()):
+        self.host = host
+        self.git_prefix = "%s." % git_prefix if git_prefix else ""
+        self.executive = executive or Executive()
+        self.cwd = cwd
+
+    def _credentials_from_git(self):
+        return [Git.read_git_config(self.git_prefix + "username"),
+                Git.read_git_config(self.git_prefix + "password")]
+
+    def _keychain_value_with_label(self, label, source_text):
+        match = re.search("%s\"(?P<value>.+)\"" % label,
+                                                  source_text,
+                                                  re.MULTILINE)
+        if match:
+            return match.group('value')
+
+    def _is_mac_os_x(self):
+        return platform.mac_ver()[0]
+
+    def _parse_security_tool_output(self, security_output):
+        username = self._keychain_value_with_label("^\s*\"acct\"<blob>=",
+                                                   security_output)
+        password = self._keychain_value_with_label("^password: ",
+                                                   security_output)
+        return [username, password]
+
+    def _run_security_tool(self, username=None):
+        security_command = [
+            "/usr/bin/security",
+            "find-internet-password",
+            "-g",
+            "-s",
+            self.host,
+        ]
+        if username:
+            security_command += ["-a", username]
+
+        log("Reading Keychain for %s account and password.  "
+            "Click \"Allow\" to continue..." % self.host)
+        try:
+            return self.executive.run_command(security_command)
+        except ScriptError:
+            # Failed to either find a keychain entry or somekind of OS-related
+            # error occured (for instance, couldn't find the /usr/sbin/security
+            # command).
+            log("Could not find a keychain entry for %s." % self.host)
+            return None
+
+    def _credentials_from_keychain(self, username=None):
+        if not self._is_mac_os_x():
+            return [username, None]
+
+        security_output = self._run_security_tool(username)
+        if security_output:
+            return self._parse_security_tool_output(security_output)
+        else:
+            return [None, None]
+
+    def read_credentials(self):
+        username = None
+        password = None
+
+        try:
+            if Git.in_working_directory(self.cwd):
+                (username, password) = self._credentials_from_git()
+        except OSError, e:
+            # Catch and ignore OSError exceptions such as "no such file 
+            # or directory" (OSError errno 2), which imply that the Git
+            # command cannot be found/is not installed.
+            pass
+
+        if not username or not password:
+            (username, password) = self._credentials_from_keychain(username)
+
+        if not username:
+            username = User.prompt("%s login: " % self.host)
+        if not password:
+            password = getpass.getpass("%s password for %s: " % (self.host,
+                                                                 username))
+
+        return [username, password]