manifest_xml: correct project revisionId for extend-project

Using sha1 manifest, project's revisionId is initialized
first by the manifest.
An update of a projet revision by extend-project node does
not apply to the revisionId which is therefore kept to the
initial value.

Resets revisionId value when revision is updated by an
extend-project node.

Change-Id: I873af283890cebaeaabde966f04b125642af929f
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/275715
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Miguel Gaio <miguel.gaio@renault.com>

docs/manifest-format.md

@@ -396,10 +396,4 @@ these extra projects.
 Manifest files stored in `$TOP_DIR/.repo/local_manifests/*.xml` will
 be loaded in alphabetical order.
 
-Additional remotes and projects may also be added through a local
+The legacy `$TOP_DIR/.repo/local_manifest.xml` path is no longer supported.
-manifest, stored in `$TOP_DIR/.repo/local_manifest.xml`. This method
-is deprecated in favor of using multiple manifest files as mentioned
-above.
-
-If `$TOP_DIR/.repo/local_manifest.xml` exists, it will be loaded before
-any manifest files stored in `$TOP_DIR/.repo/local_manifests/*.xml`.

hooks.py

@@ -0,0 +1,431 @@
+# -*- coding:utf-8 -*-
+#
+# Copyright (C) 2008 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+import os
+import re
+import sys
+import traceback
+
+from error import HookError
+from git_refs import HEAD
+
+from pyversion import is_python3
+if is_python3():
+  import urllib.parse
+else:
+  import imp
+  import urlparse
+  urllib = imp.new_module('urllib')
+  urllib.parse = urlparse
+  input = raw_input  # noqa: F821
+
+class RepoHook(object):
+  """A RepoHook contains information about a script to run as a hook.
+
+  Hooks are used to run a python script before running an upload (for instance,
+  to run presubmit checks).  Eventually, we may have hooks for other actions.
+
+  This shouldn't be confused with files in the 'repo/hooks' directory.  Those
+  files are copied into each '.git/hooks' folder for each project.  Repo-level
+  hooks are associated instead with repo actions.
+
+  Hooks are always python.  When a hook is run, we will load the hook into the
+  interpreter and execute its main() function.
+  """
+
+  def __init__(self,
+               hook_type,
+               hooks_project,
+               topdir,
+               manifest_url,
+               abort_if_user_denies=False):
+    """RepoHook constructor.
+
+    Params:
+      hook_type: A string representing the type of hook.  This is also used
+          to figure out the name of the file containing the hook.  For
+          example: 'pre-upload'.
+      hooks_project: The project containing the repo hooks.  If you have a
+          manifest, this is manifest.repo_hooks_project.  OK if this is None,
+          which will make the hook a no-op.
+      topdir: Repo's top directory (the one containing the .repo directory).
+          Scripts will run with CWD as this directory.  If you have a manifest,
+          this is manifest.topdir
+      manifest_url: The URL to the manifest git repo.
+      abort_if_user_denies: If True, we'll throw a HookError() if the user
+          doesn't allow us to run the hook.
+    """
+    self._hook_type = hook_type
+    self._hooks_project = hooks_project
+    self._manifest_url = manifest_url
+    self._topdir = topdir
+    self._abort_if_user_denies = abort_if_user_denies
+
+    # Store the full path to the script for convenience.
+    if self._hooks_project:
+      self._script_fullpath = os.path.join(self._hooks_project.worktree,
+                                           self._hook_type + '.py')
+    else:
+      self._script_fullpath = None
+
+  def _GetHash(self):
+    """Return a hash of the contents of the hooks directory.
+
+    We'll just use git to do this.  This hash has the property that if anything
+    changes in the directory we will return a different has.
+
+    SECURITY CONSIDERATION:
+      This hash only represents the contents of files in the hook directory, not
+      any other files imported or called by hooks.  Changes to imported files
+      can change the script behavior without affecting the hash.
+
+    Returns:
+      A string representing the hash.  This will always be ASCII so that it can
+      be printed to the user easily.
+    """
+    assert self._hooks_project, "Must have hooks to calculate their hash."
+
+    # We will use the work_git object rather than just calling GetRevisionId().
+    # That gives us a hash of the latest checked in version of the files that
+    # the user will actually be executing.  Specifically, GetRevisionId()
+    # doesn't appear to change even if a user checks out a different version
+    # of the hooks repo (via git checkout) nor if a user commits their own revs.
+    #
+    # NOTE: Local (non-committed) changes will not be factored into this hash.
+    # I think this is OK, since we're really only worried about warning the user
+    # about upstream changes.
+    return self._hooks_project.work_git.rev_parse('HEAD')
+
+  def _GetMustVerb(self):
+    """Return 'must' if the hook is required; 'should' if not."""
+    if self._abort_if_user_denies:
+      return 'must'
+    else:
+      return 'should'
+
+  def _CheckForHookApproval(self):
+    """Check to see whether this hook has been approved.
+
+    We'll accept approval of manifest URLs if they're using secure transports.
+    This way the user can say they trust the manifest hoster.  For insecure
+    hosts, we fall back to checking the hash of the hooks repo.
+
+    Note that we ask permission for each individual hook even though we use
+    the hash of all hooks when detecting changes.  We'd like the user to be
+    able to approve / deny each hook individually.  We only use the hash of all
+    hooks because there is no other easy way to detect changes to local imports.
+
+    Returns:
+      True if this hook is approved to run; False otherwise.
+
+    Raises:
+      HookError: Raised if the user doesn't approve and abort_if_user_denies
+          was passed to the consturctor.
+    """
+    if self._ManifestUrlHasSecureScheme():
+      return self._CheckForHookApprovalManifest()
+    else:
+      return self._CheckForHookApprovalHash()
+
+  def _CheckForHookApprovalHelper(self, subkey, new_val, main_prompt,
+                                  changed_prompt):
+    """Check for approval for a particular attribute and hook.
+
+    Args:
+      subkey: The git config key under [repo.hooks.<hook_type>] to store the
+          last approved string.
+      new_val: The new value to compare against the last approved one.
+      main_prompt: Message to display to the user to ask for approval.
+      changed_prompt: Message explaining why we're re-asking for approval.
+
+    Returns:
+      True if this hook is approved to run; False otherwise.
+
+    Raises:
+      HookError: Raised if the user doesn't approve and abort_if_user_denies
+          was passed to the consturctor.
+    """
+    hooks_config = self._hooks_project.config
+    git_approval_key = 'repo.hooks.%s.%s' % (self._hook_type, subkey)
+
+    # Get the last value that the user approved for this hook; may be None.
+    old_val = hooks_config.GetString(git_approval_key)
+
+    if old_val is not None:
+      # User previously approved hook and asked not to be prompted again.
+      if new_val == old_val:
+        # Approval matched.  We're done.
+        return True
+      else:
+        # Give the user a reason why we're prompting, since they last told
+        # us to "never ask again".
+        prompt = 'WARNING: %s\n\n' % (changed_prompt,)
+    else:
+      prompt = ''
+
+    # Prompt the user if we're not on a tty; on a tty we'll assume "no".
+    if sys.stdout.isatty():
+      prompt += main_prompt + ' (yes/always/NO)? '
+      response = input(prompt).lower()
+      print()
+
+      # User is doing a one-time approval.
+      if response in ('y', 'yes'):
+        return True
+      elif response == 'always':
+        hooks_config.SetString(git_approval_key, new_val)
+        return True
+
+    # For anything else, we'll assume no approval.
+    if self._abort_if_user_denies:
+      raise HookError('You must allow the %s hook or use --no-verify.' %
+                      self._hook_type)
+
+    return False
+
+  def _ManifestUrlHasSecureScheme(self):
+    """Check if the URI for the manifest is a secure transport."""
+    secure_schemes = ('file', 'https', 'ssh', 'persistent-https', 'sso', 'rpc')
+    parse_results = urllib.parse.urlparse(self._manifest_url)
+    return parse_results.scheme in secure_schemes
+
+  def _CheckForHookApprovalManifest(self):
+    """Check whether the user has approved this manifest host.
+
+    Returns:
+      True if this hook is approved to run; False otherwise.
+    """
+    return self._CheckForHookApprovalHelper(
+        'approvedmanifest',
+        self._manifest_url,
+        'Run hook scripts from %s' % (self._manifest_url,),
+        'Manifest URL has changed since %s was allowed.' % (self._hook_type,))
+
+  def _CheckForHookApprovalHash(self):
+    """Check whether the user has approved the hooks repo.
+
+    Returns:
+      True if this hook is approved to run; False otherwise.
+    """
+    prompt = ('Repo %s run the script:\n'
+              '  %s\n'
+              '\n'
+              'Do you want to allow this script to run')
+    return self._CheckForHookApprovalHelper(
+        'approvedhash',
+        self._GetHash(),
+        prompt % (self._GetMustVerb(), self._script_fullpath),
+        'Scripts have changed since %s was allowed.' % (self._hook_type,))
+
+  @staticmethod
+  def _ExtractInterpFromShebang(data):
+    """Extract the interpreter used in the shebang.
+
+    Try to locate the interpreter the script is using (ignoring `env`).
+
+    Args:
+      data: The file content of the script.
+
+    Returns:
+      The basename of the main script interpreter, or None if a shebang is not
+      used or could not be parsed out.
+    """
+    firstline = data.splitlines()[:1]
+    if not firstline:
+      return None
+
+    # The format here can be tricky.
+    shebang = firstline[0].strip()
+    m = re.match(r'^#!\s*([^\s]+)(?:\s+([^\s]+))?', shebang)
+    if not m:
+      return None
+
+    # If the using `env`, find the target program.
+    interp = m.group(1)
+    if os.path.basename(interp) == 'env':
+      interp = m.group(2)
+
+    return interp
+
+  def _ExecuteHookViaReexec(self, interp, context, **kwargs):
+    """Execute the hook script through |interp|.
+
+    Note: Support for this feature should be dropped ~Jun 2021.
+
+    Args:
+      interp: The Python program to run.
+      context: Basic Python context to execute the hook inside.
+      kwargs: Arbitrary arguments to pass to the hook script.
+
+    Raises:
+      HookError: When the hooks failed for any reason.
+    """
+    # This logic needs to be kept in sync with _ExecuteHookViaImport below.
+    script = """
+import json, os, sys
+path = '''%(path)s'''
+kwargs = json.loads('''%(kwargs)s''')
+context = json.loads('''%(context)s''')
+sys.path.insert(0, os.path.dirname(path))
+data = open(path).read()
+exec(compile(data, path, 'exec'), context)
+context['main'](**kwargs)
+""" % {
+        'path': self._script_fullpath,
+        'kwargs': json.dumps(kwargs),
+        'context': json.dumps(context),
+    }
+
+    # We pass the script via stdin to avoid OS argv limits.  It also makes
+    # unhandled exception tracebacks less verbose/confusing for users.
+    cmd = [interp, '-c', 'import sys; exec(sys.stdin.read())']
+    proc = subprocess.Popen(cmd, stdin=subprocess.PIPE)
+    proc.communicate(input=script.encode('utf-8'))
+    if proc.returncode:
+      raise HookError('Failed to run %s hook.' % (self._hook_type,))
+
+  def _ExecuteHookViaImport(self, data, context, **kwargs):
+    """Execute the hook code in |data| directly.
+
+    Args:
+      data: The code of the hook to execute.
+      context: Basic Python context to execute the hook inside.
+      kwargs: Arbitrary arguments to pass to the hook script.
+
+    Raises:
+      HookError: When the hooks failed for any reason.
+    """
+    # Exec, storing global context in the context dict.  We catch exceptions
+    # and convert to a HookError w/ just the failing traceback.
+    try:
+      exec(compile(data, self._script_fullpath, 'exec'), context)
+    except Exception:
+      raise HookError('%s\nFailed to import %s hook; see traceback above.' %
+                      (traceback.format_exc(), self._hook_type))
+
+    # Running the script should have defined a main() function.
+    if 'main' not in context:
+      raise HookError('Missing main() in: "%s"' % self._script_fullpath)
+
+    # Call the main function in the hook.  If the hook should cause the
+    # build to fail, it will raise an Exception.  We'll catch that convert
+    # to a HookError w/ just the failing traceback.
+    try:
+      context['main'](**kwargs)
+    except Exception:
+      raise HookError('%s\nFailed to run main() for %s hook; see traceback '
+                      'above.' % (traceback.format_exc(), self._hook_type))
+
+  def _ExecuteHook(self, **kwargs):
+    """Actually execute the given hook.
+
+    This will run the hook's 'main' function in our python interpreter.
+
+    Args:
+      kwargs: Keyword arguments to pass to the hook.  These are often specific
+          to the hook type.  For instance, pre-upload hooks will contain
+          a project_list.
+    """
+    # Keep sys.path and CWD stashed away so that we can always restore them
+    # upon function exit.
+    orig_path = os.getcwd()
+    orig_syspath = sys.path
+
+    try:
+      # Always run hooks with CWD as topdir.
+      os.chdir(self._topdir)
+
+      # Put the hook dir as the first item of sys.path so hooks can do
+      # relative imports.  We want to replace the repo dir as [0] so
+      # hooks can't import repo files.
+      sys.path = [os.path.dirname(self._script_fullpath)] + sys.path[1:]
+
+      # Initial global context for the hook to run within.
+      context = {'__file__': self._script_fullpath}
+
+      # Add 'hook_should_take_kwargs' to the arguments to be passed to main.
+      # We don't actually want hooks to define their main with this argument--
+      # it's there to remind them that their hook should always take **kwargs.
+      # For instance, a pre-upload hook should be defined like:
+      #   def main(project_list, **kwargs):
+      #
+      # This allows us to later expand the API without breaking old hooks.
+      kwargs = kwargs.copy()
+      kwargs['hook_should_take_kwargs'] = True
+
+      # See what version of python the hook has been written against.
+      data = open(self._script_fullpath).read()
+      interp = self._ExtractInterpFromShebang(data)
+      reexec = False
+      if interp:
+        prog = os.path.basename(interp)
+        if prog.startswith('python2') and sys.version_info.major != 2:
+          reexec = True
+        elif prog.startswith('python3') and sys.version_info.major == 2:
+          reexec = True
+
+      # Attempt to execute the hooks through the requested version of Python.
+      if reexec:
+        try:
+          self._ExecuteHookViaReexec(interp, context, **kwargs)
+        except OSError as e:
+          if e.errno == errno.ENOENT:
+            # We couldn't find the interpreter, so fallback to importing.
+            reexec = False
+          else:
+            raise
+
+      # Run the hook by importing directly.
+      if not reexec:
+        self._ExecuteHookViaImport(data, context, **kwargs)
+    finally:
+      # Restore sys.path and CWD.
+      sys.path = orig_syspath
+      os.chdir(orig_path)
+
+  def Run(self, user_allows_all_hooks, **kwargs):
+    """Run the hook.
+
+    If the hook doesn't exist (because there is no hooks project or because
+    this particular hook is not enabled), this is a no-op.
+
+    Args:
+      user_allows_all_hooks: If True, we will never prompt about running the
+          hook--we'll just assume it's OK to run it.
+      kwargs: Keyword arguments to pass to the hook.  These are often specific
+          to the hook type.  For instance, pre-upload hooks will contain
+          a project_list.
+
+    Raises:
+      HookError: If there was a problem finding the hook or the user declined
+          to run a required hook (from _CheckForHookApproval).
+    """
+    # No-op if there is no hooks project or if hook is disabled.
+    if ((not self._hooks_project) or (self._hook_type not in
+                                      self._hooks_project.enabled_repo_hooks)):
+      return
+
+    # Bail with a nice error if we can't find the hook.
+    if not os.path.isfile(self._script_fullpath):
+      raise HookError('Couldn\'t find repo hook: "%s"' % self._script_fullpath)
+
+    # Make sure the user is OK with running the hook.
+    if (not user_allows_all_hooks) and (not self._CheckForHookApproval()):
+      return
+
+    # Run the hook with the same version of python we're using.
+    self._ExecuteHook(**kwargs)

manifest_xml.py

@@ -31,7 +31,7 @@ else:
   urllib.parse = urlparse
 
 import gitc_utils
-from git_config import GitConfig
+from git_config import GitConfig, IsId
 from git_refs import R_HEADS, HEAD
 import platform_utils
 from project import RemoteSpec, Project, MetaProject
@@ -192,7 +192,6 @@ class XmlManifest(object):
     self.topdir = os.path.dirname(self.repodir)
     self.manifestFile = os.path.join(self.repodir, MANIFEST_FILE_NAME)
     self.globalConfig = GitConfig.ForUser()
-    self.localManifestWarning = False
     self.isGitcClient = False
     self._load_local_manifests = True
 
@@ -555,15 +554,12 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                                           self.manifestProject.worktree))
 
       if self._load_local_manifests:
-        local = os.path.join(self.repodir, LOCAL_MANIFEST_NAME)
+        if os.path.exists(os.path.join(self.repodir, LOCAL_MANIFEST_NAME)):
-        if os.path.exists(local):
+          print('error: %s is not supported; put local manifests in `%s`'
-          if not self.localManifestWarning:
+                'instead' % (LOCAL_MANIFEST_NAME,
-            self.localManifestWarning = True
-            print('warning: %s is deprecated; put local manifests '
-                  'in `%s` instead' % (LOCAL_MANIFEST_NAME,
                              os.path.join(self.repodir, LOCAL_MANIFESTS_DIR_NAME)),
                 file=sys.stderr)
-          nodes.append(self._ParseManifestXml(local, self.repodir))
+          sys.exit(1)
 
         local_dir = os.path.abspath(os.path.join(self.repodir,
                                                  LOCAL_MANIFESTS_DIR_NAME))
@@ -709,6 +705,10 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
             p.groups.extend(groups)
           if revision:
             p.revisionExpr = revision
+            if IsId(revision):
+              p.revisionId = revision
+            else:
+              p.revisionId = None
           if remote:
             p.remote = remote.ToRemoteSpec(name)
       if node.nodeName == 'repo-hooks':

project.py

@@ -18,7 +18,6 @@ from __future__ import print_function
 import errno
 import filecmp
 import glob
-import json
 import os
 import random
 import re
@@ -29,13 +28,12 @@ import sys
 import tarfile
 import tempfile
 import time
-import traceback
 
 from color import Coloring
 from git_command import GitCommand, git_require
 from git_config import GitConfig, IsId, GetSchemeFromUrl, GetUrlCookieFile, \
     ID_RE
-from error import GitError, HookError, UploadError, DownloadError
+from error import GitError, UploadError, DownloadError
 from error import ManifestInvalidRevisionError, ManifestInvalidPathError
 from error import NoManifestException
 import platform_utils
@@ -451,406 +449,6 @@ class RemoteSpec(object):
     self.orig_name = orig_name
     self.fetchUrl = fetchUrl
 
-
-class RepoHook(object):
-
-  """A RepoHook contains information about a script to run as a hook.
-
-  Hooks are used to run a python script before running an upload (for instance,
-  to run presubmit checks).  Eventually, we may have hooks for other actions.
-
-  This shouldn't be confused with files in the 'repo/hooks' directory.  Those
-  files are copied into each '.git/hooks' folder for each project.  Repo-level
-  hooks are associated instead with repo actions.
-
-  Hooks are always python.  When a hook is run, we will load the hook into the
-  interpreter and execute its main() function.
-  """
-
-  def __init__(self,
-               hook_type,
-               hooks_project,
-               topdir,
-               manifest_url,
-               abort_if_user_denies=False):
-    """RepoHook constructor.
-
-    Params:
-      hook_type: A string representing the type of hook.  This is also used
-          to figure out the name of the file containing the hook.  For
-          example: 'pre-upload'.
-      hooks_project: The project containing the repo hooks.  If you have a
-          manifest, this is manifest.repo_hooks_project.  OK if this is None,
-          which will make the hook a no-op.
-      topdir: Repo's top directory (the one containing the .repo directory).
-          Scripts will run with CWD as this directory.  If you have a manifest,
-          this is manifest.topdir
-      manifest_url: The URL to the manifest git repo.
-      abort_if_user_denies: If True, we'll throw a HookError() if the user
-          doesn't allow us to run the hook.
-    """
-    self._hook_type = hook_type
-    self._hooks_project = hooks_project
-    self._manifest_url = manifest_url
-    self._topdir = topdir
-    self._abort_if_user_denies = abort_if_user_denies
-
-    # Store the full path to the script for convenience.
-    if self._hooks_project:
-      self._script_fullpath = os.path.join(self._hooks_project.worktree,
-                                           self._hook_type + '.py')
-    else:
-      self._script_fullpath = None
-
-  def _GetHash(self):
-    """Return a hash of the contents of the hooks directory.
-
-    We'll just use git to do this.  This hash has the property that if anything
-    changes in the directory we will return a different has.
-
-    SECURITY CONSIDERATION:
-      This hash only represents the contents of files in the hook directory, not
-      any other files imported or called by hooks.  Changes to imported files
-      can change the script behavior without affecting the hash.
-
-    Returns:
-      A string representing the hash.  This will always be ASCII so that it can
-      be printed to the user easily.
-    """
-    assert self._hooks_project, "Must have hooks to calculate their hash."
-
-    # We will use the work_git object rather than just calling GetRevisionId().
-    # That gives us a hash of the latest checked in version of the files that
-    # the user will actually be executing.  Specifically, GetRevisionId()
-    # doesn't appear to change even if a user checks out a different version
-    # of the hooks repo (via git checkout) nor if a user commits their own revs.
-    #
-    # NOTE: Local (non-committed) changes will not be factored into this hash.
-    # I think this is OK, since we're really only worried about warning the user
-    # about upstream changes.
-    return self._hooks_project.work_git.rev_parse('HEAD')
-
-  def _GetMustVerb(self):
-    """Return 'must' if the hook is required; 'should' if not."""
-    if self._abort_if_user_denies:
-      return 'must'
-    else:
-      return 'should'
-
-  def _CheckForHookApproval(self):
-    """Check to see whether this hook has been approved.
-
-    We'll accept approval of manifest URLs if they're using secure transports.
-    This way the user can say they trust the manifest hoster.  For insecure
-    hosts, we fall back to checking the hash of the hooks repo.
-
-    Note that we ask permission for each individual hook even though we use
-    the hash of all hooks when detecting changes.  We'd like the user to be
-    able to approve / deny each hook individually.  We only use the hash of all
-    hooks because there is no other easy way to detect changes to local imports.
-
-    Returns:
-      True if this hook is approved to run; False otherwise.
-
-    Raises:
-      HookError: Raised if the user doesn't approve and abort_if_user_denies
-          was passed to the consturctor.
-    """
-    if self._ManifestUrlHasSecureScheme():
-      return self._CheckForHookApprovalManifest()
-    else:
-      return self._CheckForHookApprovalHash()
-
-  def _CheckForHookApprovalHelper(self, subkey, new_val, main_prompt,
-                                  changed_prompt):
-    """Check for approval for a particular attribute and hook.
-
-    Args:
-      subkey: The git config key under [repo.hooks.<hook_type>] to store the
-          last approved string.
-      new_val: The new value to compare against the last approved one.
-      main_prompt: Message to display to the user to ask for approval.
-      changed_prompt: Message explaining why we're re-asking for approval.
-
-    Returns:
-      True if this hook is approved to run; False otherwise.
-
-    Raises:
-      HookError: Raised if the user doesn't approve and abort_if_user_denies
-          was passed to the consturctor.
-    """
-    hooks_config = self._hooks_project.config
-    git_approval_key = 'repo.hooks.%s.%s' % (self._hook_type, subkey)
-
-    # Get the last value that the user approved for this hook; may be None.
-    old_val = hooks_config.GetString(git_approval_key)
-
-    if old_val is not None:
-      # User previously approved hook and asked not to be prompted again.
-      if new_val == old_val:
-        # Approval matched.  We're done.
-        return True
-      else:
-        # Give the user a reason why we're prompting, since they last told
-        # us to "never ask again".
-        prompt = 'WARNING: %s\n\n' % (changed_prompt,)
-    else:
-      prompt = ''
-
-    # Prompt the user if we're not on a tty; on a tty we'll assume "no".
-    if sys.stdout.isatty():
-      prompt += main_prompt + ' (yes/always/NO)? '
-      response = input(prompt).lower()
-      print()
-
-      # User is doing a one-time approval.
-      if response in ('y', 'yes'):
-        return True
-      elif response == 'always':
-        hooks_config.SetString(git_approval_key, new_val)
-        return True
-
-    # For anything else, we'll assume no approval.
-    if self._abort_if_user_denies:
-      raise HookError('You must allow the %s hook or use --no-verify.' %
-                      self._hook_type)
-
-    return False
-
-  def _ManifestUrlHasSecureScheme(self):
-    """Check if the URI for the manifest is a secure transport."""
-    secure_schemes = ('file', 'https', 'ssh', 'persistent-https', 'sso', 'rpc')
-    parse_results = urllib.parse.urlparse(self._manifest_url)
-    return parse_results.scheme in secure_schemes
-
-  def _CheckForHookApprovalManifest(self):
-    """Check whether the user has approved this manifest host.
-
-    Returns:
-      True if this hook is approved to run; False otherwise.
-    """
-    return self._CheckForHookApprovalHelper(
-        'approvedmanifest',
-        self._manifest_url,
-        'Run hook scripts from %s' % (self._manifest_url,),
-        'Manifest URL has changed since %s was allowed.' % (self._hook_type,))
-
-  def _CheckForHookApprovalHash(self):
-    """Check whether the user has approved the hooks repo.
-
-    Returns:
-      True if this hook is approved to run; False otherwise.
-    """
-    prompt = ('Repo %s run the script:\n'
-              '  %s\n'
-              '\n'
-              'Do you want to allow this script to run')
-    return self._CheckForHookApprovalHelper(
-        'approvedhash',
-        self._GetHash(),
-        prompt % (self._GetMustVerb(), self._script_fullpath),
-        'Scripts have changed since %s was allowed.' % (self._hook_type,))
-
-  @staticmethod
-  def _ExtractInterpFromShebang(data):
-    """Extract the interpreter used in the shebang.
-
-    Try to locate the interpreter the script is using (ignoring `env`).
-
-    Args:
-      data: The file content of the script.
-
-    Returns:
-      The basename of the main script interpreter, or None if a shebang is not
-      used or could not be parsed out.
-    """
-    firstline = data.splitlines()[:1]
-    if not firstline:
-      return None
-
-    # The format here can be tricky.
-    shebang = firstline[0].strip()
-    m = re.match(r'^#!\s*([^\s]+)(?:\s+([^\s]+))?', shebang)
-    if not m:
-      return None
-
-    # If the using `env`, find the target program.
-    interp = m.group(1)
-    if os.path.basename(interp) == 'env':
-      interp = m.group(2)
-
-    return interp
-
-  def _ExecuteHookViaReexec(self, interp, context, **kwargs):
-    """Execute the hook script through |interp|.
-
-    Note: Support for this feature should be dropped ~Jun 2021.
-
-    Args:
-      interp: The Python program to run.
-      context: Basic Python context to execute the hook inside.
-      kwargs: Arbitrary arguments to pass to the hook script.
-
-    Raises:
-      HookError: When the hooks failed for any reason.
-    """
-    # This logic needs to be kept in sync with _ExecuteHookViaImport below.
-    script = """
-import json, os, sys
-path = '''%(path)s'''
-kwargs = json.loads('''%(kwargs)s''')
-context = json.loads('''%(context)s''')
-sys.path.insert(0, os.path.dirname(path))
-data = open(path).read()
-exec(compile(data, path, 'exec'), context)
-context['main'](**kwargs)
-""" % {
-        'path': self._script_fullpath,
-        'kwargs': json.dumps(kwargs),
-        'context': json.dumps(context),
-    }
-
-    # We pass the script via stdin to avoid OS argv limits.  It also makes
-    # unhandled exception tracebacks less verbose/confusing for users.
-    cmd = [interp, '-c', 'import sys; exec(sys.stdin.read())']
-    proc = subprocess.Popen(cmd, stdin=subprocess.PIPE)
-    proc.communicate(input=script.encode('utf-8'))
-    if proc.returncode:
-      raise HookError('Failed to run %s hook.' % (self._hook_type,))
-
-  def _ExecuteHookViaImport(self, data, context, **kwargs):
-    """Execute the hook code in |data| directly.
-
-    Args:
-      data: The code of the hook to execute.
-      context: Basic Python context to execute the hook inside.
-      kwargs: Arbitrary arguments to pass to the hook script.
-
-    Raises:
-      HookError: When the hooks failed for any reason.
-    """
-    # Exec, storing global context in the context dict.  We catch exceptions
-    # and convert to a HookError w/ just the failing traceback.
-    try:
-      exec(compile(data, self._script_fullpath, 'exec'), context)
-    except Exception:
-      raise HookError('%s\nFailed to import %s hook; see traceback above.' %
-                      (traceback.format_exc(), self._hook_type))
-
-    # Running the script should have defined a main() function.
-    if 'main' not in context:
-      raise HookError('Missing main() in: "%s"' % self._script_fullpath)
-
-    # Call the main function in the hook.  If the hook should cause the
-    # build to fail, it will raise an Exception.  We'll catch that convert
-    # to a HookError w/ just the failing traceback.
-    try:
-      context['main'](**kwargs)
-    except Exception:
-      raise HookError('%s\nFailed to run main() for %s hook; see traceback '
-                      'above.' % (traceback.format_exc(), self._hook_type))
-
-  def _ExecuteHook(self, **kwargs):
-    """Actually execute the given hook.
-
-    This will run the hook's 'main' function in our python interpreter.
-
-    Args:
-      kwargs: Keyword arguments to pass to the hook.  These are often specific
-          to the hook type.  For instance, pre-upload hooks will contain
-          a project_list.
-    """
-    # Keep sys.path and CWD stashed away so that we can always restore them
-    # upon function exit.
-    orig_path = os.getcwd()
-    orig_syspath = sys.path
-
-    try:
-      # Always run hooks with CWD as topdir.
-      os.chdir(self._topdir)
-
-      # Put the hook dir as the first item of sys.path so hooks can do
-      # relative imports.  We want to replace the repo dir as [0] so
-      # hooks can't import repo files.
-      sys.path = [os.path.dirname(self._script_fullpath)] + sys.path[1:]
-
-      # Initial global context for the hook to run within.
-      context = {'__file__': self._script_fullpath}
-
-      # Add 'hook_should_take_kwargs' to the arguments to be passed to main.
-      # We don't actually want hooks to define their main with this argument--
-      # it's there to remind them that their hook should always take **kwargs.
-      # For instance, a pre-upload hook should be defined like:
-      #   def main(project_list, **kwargs):
-      #
-      # This allows us to later expand the API without breaking old hooks.
-      kwargs = kwargs.copy()
-      kwargs['hook_should_take_kwargs'] = True
-
-      # See what version of python the hook has been written against.
-      data = open(self._script_fullpath).read()
-      interp = self._ExtractInterpFromShebang(data)
-      reexec = False
-      if interp:
-        prog = os.path.basename(interp)
-        if prog.startswith('python2') and sys.version_info.major != 2:
-          reexec = True
-        elif prog.startswith('python3') and sys.version_info.major == 2:
-          reexec = True
-
-      # Attempt to execute the hooks through the requested version of Python.
-      if reexec:
-        try:
-          self._ExecuteHookViaReexec(interp, context, **kwargs)
-        except OSError as e:
-          if e.errno == errno.ENOENT:
-            # We couldn't find the interpreter, so fallback to importing.
-            reexec = False
-          else:
-            raise
-
-      # Run the hook by importing directly.
-      if not reexec:
-        self._ExecuteHookViaImport(data, context, **kwargs)
-    finally:
-      # Restore sys.path and CWD.
-      sys.path = orig_syspath
-      os.chdir(orig_path)
-
-  def Run(self, user_allows_all_hooks, **kwargs):
-    """Run the hook.
-
-    If the hook doesn't exist (because there is no hooks project or because
-    this particular hook is not enabled), this is a no-op.
-
-    Args:
-      user_allows_all_hooks: If True, we will never prompt about running the
-          hook--we'll just assume it's OK to run it.
-      kwargs: Keyword arguments to pass to the hook.  These are often specific
-          to the hook type.  For instance, pre-upload hooks will contain
-          a project_list.
-
-    Raises:
-      HookError: If there was a problem finding the hook or the user declined
-          to run a required hook (from _CheckForHookApproval).
-    """
-    # No-op if there is no hooks project or if hook is disabled.
-    if ((not self._hooks_project) or (self._hook_type not in
-                                      self._hooks_project.enabled_repo_hooks)):
-      return
-
-    # Bail with a nice error if we can't find the hook.
-    if not os.path.isfile(self._script_fullpath):
-      raise HookError('Couldn\'t find repo hook: "%s"' % self._script_fullpath)
-
-    # Make sure the user is OK with running the hook.
-    if (not user_allows_all_hooks) and (not self._CheckForHookApproval()):
-      return
-
-    # Run the hook with the same version of python we're using.
-    self._ExecuteHook(**kwargs)
-
-
 class Project(object):
   # These objects can be shared between several working trees.
   shareable_files = ['description', 'info']
@@ -2311,6 +1909,27 @@ class Project(object):
     # Enable the extension!
     self.config.SetString('extensions.%s' % (key,), value)
 
+  def ResolveRemoteHead(self, name=None):
+    """Find out what the default branch (HEAD) points to.
+
+    Normally this points to refs/heads/master, but projects are moving to main.
+    Support whatever the server uses rather than hardcoding "master" ourselves.
+    """
+    if name is None:
+      name = self.remote.name
+
+    # The output will look like (NB: tabs are separators):
+    # ref: refs/heads/master	HEAD
+    # 5f6803b100bb3cd0f534e96e88c91373e8ed1c44	HEAD
+    output = self.bare_git.ls_remote('-q', '--symref', '--exit-code', name, 'HEAD')
+
+    for line in output.splitlines():
+      lhs, rhs = line.split('\t', 1)
+      if rhs == 'HEAD' and lhs.startswith('ref:'):
+        return lhs[4:].strip()
+
+    return None
+
   def _CheckForImmutableRevision(self):
     try:
       # if revision (sha or tag) is not present then following function
@@ -3208,6 +2827,13 @@ class Project(object):
       self._bare = bare
       self._gitdir = gitdir
 
+    # __getstate__ and __setstate__ are required for pickling because __getattr__ exists.
+    def __getstate__(self):
+      return (self._project, self._bare, self._gitdir)
+
+    def __setstate__(self, state):
+      self._project, self._bare, self._gitdir = state
+
     def LsOthers(self):
       p = GitCommand(self._project,
                      ['ls-files',

repo

@@ -966,9 +966,7 @@ def _FindRepo():
   repo = None
 
   olddir = None
-  while curdir != '/' \
+  while curdir != olddir and not repo:
-          and curdir != olddir \
-          and not repo:
     repo = os.path.join(curdir, repodir, REPO_MAIN)
     if not os.path.isfile(repo):
       repo = None

subcmds/init.py

@@ -54,7 +54,8 @@ from the server and is installed in the .repo/ directory in the
 current working directory.
 
 The optional -b argument can be used to select the manifest branch
-to checkout and use.  If no branch is specified, master is assumed.
+to checkout and use.  If no branch is specified, the remote's default
+branch is used.
 
 The optional -m argument can be used to specify an alternate manifest
 to be used. If no manifest is specified, the manifest default.xml
@@ -215,24 +216,27 @@ to update the working directory files.
 
       m._InitGitDir(mirror_git=mirrored_manifest_git)
 
-      if opt.manifest_branch:
-        m.revisionExpr = opt.manifest_branch
-      else:
-        m.revisionExpr = 'refs/heads/master'
-    else:
-      if opt.manifest_branch:
-        m.revisionExpr = opt.manifest_branch
-      else:
-        m.PreSync()
-
     self._ConfigureDepth(opt)
 
+    # Set the remote URL before the remote branch as we might need it below.
     if opt.manifest_url:
       r = m.GetRemote(m.remote.name)
       r.url = opt.manifest_url
       r.ResetFetch()
       r.Save()
 
+    if opt.manifest_branch:
+      m.revisionExpr = opt.manifest_branch
+    else:
+      if is_new:
+        default_branch = m.ResolveRemoteHead()
+        if default_branch is None:
+          # If the remote doesn't have HEAD configured, default to master.
+          default_branch = 'refs/heads/master'
+        m.revisionExpr = default_branch
+      else:
+        m.PreSync()
+
     groups = re.split(r'[,\s]+', opt.groups)
     all_platforms = ['linux', 'darwin', 'windows']
     platformize = lambda x: 'platform-' + x

subcmds/manifest.py

@@ -30,7 +30,7 @@ class Manifest(PagedCommand):
   _helpDescription = """
 
 With the -o option, exports the current manifest for inspection.
-The manifest and (if present) local_manifest.xml are combined
+The manifest and (if present) local_manifests/ are combined
 together to produce a single manifest file.  This file can be stored
 in a Git repository for use during future 'repo init' invocations.
 

subcmds/status.py

@@ -16,17 +16,13 @@
 
 from __future__ import print_function
 
+import functools
 import glob
-import itertools
+import multiprocessing
 import os
 
 from command import PagedCommand
 
-try:
-  import threading as _threading
-except ImportError:
-  import dummy_threading as _threading
-
 from color import Coloring
 import platform_utils
 
@@ -95,25 +91,20 @@ the following meanings:
     p.add_option('-q', '--quiet', action='store_true',
                  help="only print the name of modified projects")
 
-  def _StatusHelper(self, project, clean_counter, sem, quiet):
+  def _StatusHelper(self, quiet, project):
     """Obtains the status for a specific project.
 
     Obtains the status for a project, redirecting the output to
-    the specified object. It will release the semaphore
+    the specified object.
-    when done.
 
     Args:
+      quiet: Where to output the status.
       project: Project to get status of.
-      clean_counter: Counter for clean projects.
+
-      sem: Semaphore, will call release() when complete.
+    Returns:
-      output: Where to output the status.
+      The status of the project.
     """
-    try:
+    return project.PrintWorkTreeStatus(quiet=quiet)
-      state = project.PrintWorkTreeStatus(quiet=quiet)
-      if state == 'CLEAN':
-        next(clean_counter)
-    finally:
-      sem.release()
 
   def _FindOrphans(self, dirs, proj_dirs, proj_dirs_parents, outstring):
     """find 'dirs' that are present in 'proj_dirs_parents' but not in 'proj_dirs'"""
@@ -133,27 +124,18 @@ the following meanings:
 
   def Execute(self, opt, args):
     all_projects = self.GetProjects(args)
-    counter = itertools.count()
+    counter = 0
 
     if opt.jobs == 1:
       for project in all_projects:
         state = project.PrintWorkTreeStatus(quiet=opt.quiet)
         if state == 'CLEAN':
-          next(counter)
+          counter += 1
     else:
-      sem = _threading.Semaphore(opt.jobs)
+      with multiprocessing.Pool(opt.jobs) as pool:
-      threads = []
+        states = pool.map(functools.partial(self._StatusHelper, opt.quiet), all_projects)
-      for project in all_projects:
+        counter += states.count('CLEAN')
-        sem.acquire()
+    if not opt.quiet and len(all_projects) == counter:
-
-        t = _threading.Thread(target=self._StatusHelper,
-                              args=(project, counter, sem, opt.quiet))
-        threads.append(t)
-        t.daemon = True
-        t.start()
-      for t in threads:
-        t.join()
-    if not opt.quiet and len(all_projects) == next(counter):
       print('nothing to commit (working directory clean)')
 
     if opt.orphans:

subcmds/upload.py

@@ -24,7 +24,7 @@ from editor import Editor
 from error import HookError, UploadError
 from git_command import GitCommand
 from git_refs import R_HEADS
-from project import RepoHook
+from hooks import RepoHook
 
 from pyversion import is_python3
 if not is_python3():

tests/test_hooks.py

@@ -0,0 +1,60 @@
+# -*- coding:utf-8 -*-
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Unittests for the hooks.py module."""
+
+from __future__ import print_function
+
+import hooks
+import unittest
+
+class RepoHookShebang(unittest.TestCase):
+  """Check shebang parsing in RepoHook."""
+
+  def test_no_shebang(self):
+    """Lines w/out shebangs should be rejected."""
+    DATA = (
+        '',
+        '# -*- coding:utf-8 -*-\n',
+        '#\n# foo\n',
+        '# Bad shebang in script\n#!/foo\n'
+    )
+    for data in DATA:
+      self.assertIsNone(hooks.RepoHook._ExtractInterpFromShebang(data))
+
+  def test_direct_interp(self):
+    """Lines whose shebang points directly to the interpreter."""
+    DATA = (
+        ('#!/foo', '/foo'),
+        ('#! /foo', '/foo'),
+        ('#!/bin/foo ', '/bin/foo'),
+        ('#! /usr/foo ', '/usr/foo'),
+        ('#! /usr/foo -args', '/usr/foo'),
+    )
+    for shebang, interp in DATA:
+      self.assertEqual(hooks.RepoHook._ExtractInterpFromShebang(shebang),
+                       interp)
+
+  def test_env_interp(self):
+    """Lines whose shebang launches through `env`."""
+    DATA = (
+        ('#!/usr/bin/env foo', 'foo'),
+        ('#!/bin/env foo', 'foo'),
+        ('#! /bin/env /bin/foo ', '/bin/foo'),
+    )
+    for shebang, interp in DATA:
+      self.assertEqual(hooks.RepoHook._ExtractInterpFromShebang(shebang),
+                       interp)

tests/test_project.py

@@ -44,45 +44,6 @@ def TempGitTree():
     platform_utils.rmtree(tempdir)
 
 
-class RepoHookShebang(unittest.TestCase):
-  """Check shebang parsing in RepoHook."""
-
-  def test_no_shebang(self):
-    """Lines w/out shebangs should be rejected."""
-    DATA = (
-        '',
-        '# -*- coding:utf-8 -*-\n',
-        '#\n# foo\n',
-        '# Bad shebang in script\n#!/foo\n'
-    )
-    for data in DATA:
-      self.assertIsNone(project.RepoHook._ExtractInterpFromShebang(data))
-
-  def test_direct_interp(self):
-    """Lines whose shebang points directly to the interpreter."""
-    DATA = (
-        ('#!/foo', '/foo'),
-        ('#! /foo', '/foo'),
-        ('#!/bin/foo ', '/bin/foo'),
-        ('#! /usr/foo ', '/usr/foo'),
-        ('#! /usr/foo -args', '/usr/foo'),
-    )
-    for shebang, interp in DATA:
-      self.assertEqual(project.RepoHook._ExtractInterpFromShebang(shebang),
-                       interp)
-
-  def test_env_interp(self):
-    """Lines whose shebang launches through `env`."""
-    DATA = (
-        ('#!/usr/bin/env foo', 'foo'),
-        ('#!/bin/env foo', 'foo'),
-        ('#! /bin/env /bin/foo ', '/bin/foo'),
-    )
-    for shebang, interp in DATA:
-      self.assertEqual(project.RepoHook._ExtractInterpFromShebang(shebang),
-                       interp)
-
-
 class FakeProject(object):
   """A fake for Project for basic functionality."""