[ios] Add codesigning information in generated Xcode project

When using new build system, Xcode requires codesigning information
in the Xcode project to build and run the app (even if they are not
used since the build is done via ninja).

Add support for collecting those information when running "gn gen"
(this requires adding a new exception to exec_script but this cannot
be done at build time since the information is used to generate the
Xcode project when passing --ide=xcode to gen step of gn).

Bug: 1094890
Change-Id: I63dabb836355fb7e2324580d5610872ea4fc33f8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2267099Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Mike Dougherty <michaeldo@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782964}

build/config/ios/codesign.py

@@ -7,6 +7,7 @@ import codecs
 import datetime
 import fnmatch
 import glob
+import json
 import os
 import plistlib
 import shutil
@@ -95,6 +96,14 @@ class ProvisioningProfile(object):
   def path(self):
     return self._path
 
+  @property
+  def team_identifier(self):
+    return self._data.get('TeamIdentifier', [''])[0]
+
+  @property
+  def name(self):
+    return self._data.get('Name', '')
+
   @property
   def application_identifier_pattern(self):
     return self._data.get('Entitlements', {}).get('application-identifier', '')
@@ -511,6 +520,31 @@ class GenerateEntitlementsAction(Action):
     entitlements.WriteTo(args.path)
 
 
+class FindProvisioningProfileAction(Action):
+  """Class implementing the find-codesign-identity action."""
+
+  name = 'find-provisioning-profile'
+  help = 'find provisioning profile for use by Xcode project generator'
+
+  @staticmethod
+  def _Register(parser):
+    parser.add_argument('--bundle-id',
+                        '-b',
+                        required=True,
+                        help='bundle identifier')
+
+  @staticmethod
+  def _Execute(args):
+    provisioning_profile_info = {}
+    provisioning_profile = FindProvisioningProfile(args.bundle_id, False)
+    for key in ('team_identifier', 'name'):
+      if provisioning_profile:
+        provisioning_profile_info[key] = getattr(provisioning_profile, key)
+      else:
+        provisioning_profile_info[key] = ''
+    print(json.dumps(provisioning_profile_info))
+
+
 def Main():
   # Cache this codec so that plistlib can find it. See
   # https://crbug.com/999461#c12 for more details.
@@ -523,6 +557,7 @@ def Main():
       CodeSignBundleAction,
       CodeSignFileAction,
       GenerateEntitlementsAction,
+      FindProvisioningProfileAction,
   ]
 
   for action in actions:

build/config/ios/rules.gni

@@ -285,6 +285,16 @@ template("create_signed_bundle") {
     _xcode_product_bundle_id = invoker.xcode_product_bundle_id
   }
 
+  if (_xcode_product_bundle_id != "") {
+    _ios_provisioning_profile_info =
+        exec_script("//build/config/ios/codesign.py",
+                    [
+                      "find-provisioning-profile",
+                      "-b=" + _xcode_product_bundle_id,
+                    ],
+                    "json")
+  }
+
   create_bundle(_target_name) {
     forward_variables_from(invoker,
                            [
@@ -313,6 +323,12 @@ template("create_signed_bundle") {
       IPHONEOS_DEPLOYMENT_TARGET = ios_deployment_target
       if (_xcode_product_bundle_id != "") {
         PRODUCT_BUNDLE_IDENTIFIER = _xcode_product_bundle_id
+
+        if (defined(_ios_provisioning_profile_info)) {
+          CODE_SIGN_IDENTITY = "iPhone Developer"
+          DEVELOPMENT_TEAM = _ios_provisioning_profile_info.team_identifier
+          PROVISIONING_PROFILE_SPECIFIER = _ios_provisioning_profile_info.name
+        }
       }
 
       # If invoker has defined extra attributes, they override the defaults.

build/dotfile_settings.gni

@@ -16,6 +16,7 @@ build_dotfile_settings = {
     "//build/config/gcc/gcc_version.gni",
     "//build/config/host_byteorder.gni",
     "//build/config/ios/ios_sdk.gni",
+    "//build/config/ios/rules.gni",
     "//build/config/linux/BUILD.gn",
     "//build/config/linux/pkg_config.gni",
     "//build/config/linux/atk/BUILD.gn",