Add the symbol and source server scripts.

tools/symsrc/pdb_fingerprint_from_img.py

+#!/usr/bin/env python
+
+# Copyright (c) 2008 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""This will retrieve a PDBs "fingerprint" from it's corresponding executable
+image (.dll or .exe).  This is used when retrieving the PDB from the symbol
+server.  The .pdb (or cab compressed .pd_) is expected at a path like:
+ foo.pdb/FINGERPRINT/foo.pdb
+
+We can retrieve the same information from the .PDB file itself, but this file
+format is much more difficult and undocumented.  Instead, we can look at the
+DLL's reference to the PDB, and use that to retrieve the information."""
+
+import sys
+import pefile
+
+__CV_INFO_PDB70_format__ = ('CV_INFO_PDB70',
+  ('4s,CvSignature', '16s,Signature', 'L,Age'))
+
+__GUID_format__ = ('GUID',
+  ('L,Data1', 'H,Data2', 'H,Data3', '8s,Data4'))
+
+def GetPDBInfoFromImg(filename):
+  """Returns the PDB fingerprint and the pdb filename given an image file"""
+
+  pe = pefile.PE(filename)
+
+  for dbg in pe.DIRECTORY_ENTRY_DEBUG:
+    if dbg.struct.Type == 2:  # IMAGE_DEBUG_TYPE_CODEVIEW
+      off = dbg.struct.AddressOfRawData
+      size = dbg.struct.SizeOfData
+      data = pe.get_memory_mapped_image()[off:off+size]
+
+      cv = pefile.Structure(__CV_INFO_PDB70_format__)
+      cv.__unpack__(data)
+      cv.PdbFileName = data[cv.sizeof():]
+      guid = pefile.Structure(__GUID_format__)
+      guid.__unpack__(cv.Signature)
+      guid.Data4_0 = ''.join("%02X" % ord(x) for x in guid.Data4[0:2])
+      guid.Data4_1 = ''.join("%02X" % ord(x) for x in guid.Data4[2:])
+
+      return ("%08X%04X%04X%s%s%d" % (
+          guid.Data1, guid.Data2, guid.Data3,
+          guid.Data4_0, guid.Data4_1, cv.Age),
+          cv.PdbFileName.split('\x00', 1)[0])
+
+    break
+
+if __name__ == '__main__':
+  if len(sys.argv) != 2:
+    print "usage: file.dll"
+    sys.exit(1)
+
+  (fingerprint, file) = GetPDBInfoFromImg(sys.argv[1])
+  print "%s %s" % (fingerprint, file)