ninja/mac: Support iOS codesign for ninja builds.

pylib/gyp/xcode_emulation.py

Index: pylib/gyp/xcode_emulation.py
===================================================================
--- pylib/gyp/xcode_emulation.py	(revision 1755)
+++ pylib/gyp/xcode_emulation.py	(working copy)
@@ -27,6 +27,10 @@
   # cached at class-level for efficiency.
   _plist_cache = {}
 
+  # Populated lazily by GetIOSPostbuilds.  Shared by all XcodeSettings, so
+  # cached at class-level for efficiency.
+  _codesigning_key_cache = {}
+
   def __init__(self, spec):
     self.spec = spec
 
@@ -40,25 +44,34 @@
     configs = spec['configurations']
     for configname, config in configs.iteritems():
       self.xcode_settings[configname] = config.get('xcode_settings', {})
+      self._ConvertConditionalKeys(configname)
       if self.xcode_settings[configname].get('IPHONEOS_DEPLOYMENT_TARGET',
                                              None):
         self.isIOS = True
 
-      # If you need this, speak up at http://crbug.com/122592
-      conditional_keys = [key for key in self.xcode_settings[configname]
-                          if key.endswith(']')]
-      if conditional_keys:
-        print 'Warning: Conditional keys not implemented, ignoring:', \
-              ' '.join(conditional_keys)
-        for key in conditional_keys:
-          del self.xcode_settings[configname][key]
-
     # This is only non-None temporarily during the execution of some methods.
     self.configname = None
 
     # Used by _AdjustLibrary to match .a and .dylib entries in libraries.
     self.library_re = re.compile(r'^lib([^/]+)\.(a|dylib)$')
 
+  def _ConvertConditionalKeys(self, configname):
+    """Converts or warns on conditional keys.  Xcode supports conditional keys,
+    such as CODE_SIGN_IDENTITY[sdk=iphoneos*].  This is a partial implementation
+    with some keys converted while the rest force a warning."""
+    settings = self.xcode_settings[configname]
+    conditional_keys = [key for key in settings if key.endswith(']')]
+    for key in conditional_keys:
+      # If you need more, speak up at http://crbug.com/122592
+      if key.endswith("[sdk=iphoneos*]"):
+        if configname.endswith("iphoneos"):
+          new_key = key.split("[")[0]
+          settings[new_key] = settings[key]
+      else:
+        print 'Warning: Conditional keys not implemented, ignoring:', \
+              ' '.join(conditional_keys)
+      del settings[key]
+
   def _Settings(self):
     assert self.configname
     return self.xcode_settings[self.configname]
@@ -744,7 +757,8 @@
     self.configname = None
     return result
 
-  def GetTargetPostbuilds(self, configname, output, output_binary, quiet=False):
+  def _GetTargetPostbuilds(self, configname, output, output_binary,
+                           quiet=False):
     """Returns a list of shell commands that contain the shell commands
     to run as postbuilds for this target, before the actual postbuilds."""
     # dSYMs need to build before stripping happens.
@@ -752,6 +766,50 @@
         self._GetDebugInfoPostbuilds(configname, output, output_binary, quiet) +
         self._GetStripPostbuilds(configname, output_binary, quiet))
 
+  def _GetIOSPostbuilds(self, configname, output_binary):
+    """Return a shell command to codesign the iOS output binary so it can
+    be deployed to a device.  This should be run as the very last step of the
+    build."""
+    if not (self.isIOS and self.spec['type'] == "executable"):
+      return []
+
+    identity = self.xcode_settings[configname].get('CODE_SIGN_IDENTITY', '')
+    if identity == '':
+      return []
+    if identity not in XcodeSettings._codesigning_key_cache:
+      proc = subprocess.Popen(['security', 'find-identity', '-p', 'codesigning',
+                               '-v'], stdout=subprocess.PIPE)
+      output = proc.communicate()[0].strip()
+      key = None
+      for item in output.split("\n"):
+        if identity in item:
+          assert key == None, (
+              "Multiple codesigning identities for identity: %s" %
+              identity)
+          key = item.split(' ')[1]
+      XcodeSettings._codesigning_key_cache[identity] = key
+    key = XcodeSettings._codesigning_key_cache[identity]
+    if key:
+      # Warn for any unimplemented signing xcode keys.
+      unimpl = ['CODE_SIGN_RESOURCE_RULES_PATH', 'OTHER_CODE_SIGN_FLAGS',
+                'CODE_SIGN_ENTITLEMENTS']
+      keys = set(self.xcode_settings[configname].keys())
+      unimpl = set(unimpl) & keys
+      if unimpl:
+        print 'Warning: Some codesign keys not implemented, ignoring:', \
+            ' '.join(unimpl)
+      return ['codesign --force --sign %s %s' % (key, output_binary)]
+    return []
+
+  def AddImplicitPostbuilds(self, configname, output, output_binary,
+                            postbuilds=[], quiet=False):
+    """Returns a list of shell commands that should run before and after
+    |postbuilds|."""
+    assert output_binary is not None
+    pre = self._GetTargetPostbuilds(configname, output, output_binary, quiet)
+    post = self._GetIOSPostbuilds(configname, output_binary)
+    return pre + postbuilds + post
+
   def _AdjustLibrary(self, library, config_name=None):
     if library.endswith('.framework'):
       l = '-framework ' + os.path.splitext(os.path.basename(library))[0]
@@ -815,15 +873,20 @@
         cache['DTSDKBuild'] = cache['BuildMachineOSBuild']
 
       if self.isIOS:
-        cache['UIDeviceFamily'] = self._XcodeIOSDeviceFamily(configname)
         if configname.endswith("iphoneos"):
           cache['CFBundleSupportedPlatforms'] = ['iPhoneOS']
         else:
           cache['CFBundleSupportedPlatforms'] = ['iPhoneSimulator']
       XcodeSettings._plist_cache[configname] = cache
-    return XcodeSettings._plist_cache[configname]
 
+    # Include extra plist items that are per-target, not per global
+    # XcodeSettings.
+    items = dict(XcodeSettings._plist_cache[configname])
+    if self.isIOS:
+      items['UIDeviceFamily'] = self._XcodeIOSDeviceFamily(configname)
+    return items
 
+
 class MacPrefixHeader(object):
   """A class that helps with emulating Xcode's GCC_PREFIX_HEADER feature.