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# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
import contextlib
from itertools import chain
import os.path as osp
from pathlib import Path
import tempfile
from gitdb.exc import BadName
from git import (
Commit,
GitCommandError,
GitConfigParser,
Head,
RefLog,
Reference,
RemoteReference,
Repo,
SymbolicReference,
TagReference,
)
from git.objects.tag import TagObject
import git.refs as refs
from git.util import Actor
from test.lib import TestBase, with_rw_repo, PathLikeMock
class TestRefs(TestBase):
@contextlib.contextmanager
def _repo_with_initial_commit(self, base_dir):
repo_dir = base_dir / "repo"
repo = Repo.init(repo_dir)
(repo_dir / "file.txt").write_text("initial\n", encoding="utf-8")
repo.index.add(["file.txt"])
repo.index.commit("initial")
try:
yield repo
finally:
repo.git.clear_cache()
def test_from_path(self):
# Should be able to create any reference directly.
for ref_type in (Reference, Head, TagReference, RemoteReference):
for name in ("rela_name", "path/rela_name"):
full_path = ref_type.to_full_path(name)
instance = ref_type.from_path(self.rorepo, full_path)
assert isinstance(instance, ref_type)
# END for each name
# END for each type
# Invalid path.
self.assertRaises(ValueError, TagReference, self.rorepo, "refs/invalid/tag")
# Works without path check.
TagReference(self.rorepo, "refs/invalid/tag", check_path=False)
# Check remoteness
assert Reference(self.rorepo, "refs/remotes/origin").is_remote()
def test_from_pathlike(self):
# Should be able to create any reference directly.
for ref_type in (Reference, Head, TagReference, RemoteReference):
for name in ("rela_name", "path/rela_name"):
full_path = ref_type.to_full_path(PathLikeMock(name))
instance = ref_type.from_path(self.rorepo, PathLikeMock(full_path))
assert isinstance(instance, ref_type)
# END for each name
# END for each type
# Invalid path.
self.assertRaises(ValueError, TagReference, self.rorepo, "refs/invalid/tag")
# Works without path check.
TagReference(self.rorepo, PathLikeMock("refs/invalid/tag"), check_path=False)
# Check remoteness
assert Reference(self.rorepo, PathLikeMock("refs/remotes/origin")).is_remote()
def test_tag_base(self):
tag_object_refs = []
for tag in self.rorepo.tags:
assert "refs/tags" in tag.path
assert tag.name
assert isinstance(tag.commit, Commit)
if tag.tag is not None:
tag_object_refs.append(tag)
tagobj = tag.tag
# Have no dict.
self.assertRaises(AttributeError, setattr, tagobj, "someattr", 1)
assert isinstance(tagobj, TagObject)
assert tagobj.tag == tag.name
assert isinstance(tagobj.tagger, Actor)
assert isinstance(tagobj.tagged_date, int)
assert isinstance(tagobj.tagger_tz_offset, int)
assert tagobj.message
assert tag.object == tagobj
# Can't assign the object.
self.assertRaises(AttributeError, setattr, tag, "object", tagobj)
# END if we have a tag object
# END for tag in repo-tags
assert tag_object_refs
assert isinstance(self.rorepo.tags["0.1.5"], TagReference)
def test_tags_author(self):
tag = self.rorepo.tags[0]
tagobj = tag.tag
assert isinstance(tagobj.tagger, Actor)
tagger_name = tagobj.tagger.name
assert tagger_name == "Michael Trier"
def test_tags(self):
# Tag refs can point to tag objects or to commits.
s = set()
ref_count = 0
for ref in chain(self.rorepo.tags, self.rorepo.heads):
ref_count += 1
assert isinstance(ref, refs.Reference)
assert str(ref) == ref.name
assert repr(ref)
assert ref == ref
assert not ref != ref
s.add(ref)
# END for each ref
assert len(s) == ref_count
assert len(s | s) == ref_count
@with_rw_repo("HEAD", bare=False)
def test_heads(self, rwrepo):
for head in rwrepo.heads:
assert head.name
assert head.path
assert "refs/heads" in head.path
prev_object = head.object
cur_object = head.object
assert prev_object == cur_object # Represent the same git object...
assert prev_object is not cur_object # ...but are different instances.
with head.config_writer() as writer:
tv = "testopt"
writer.set_value(tv, 1)
assert writer.get_value(tv) == 1
assert head.config_reader().get_value(tv) == 1
with head.config_writer() as writer:
writer.remove_option(tv)
# After the clone, we might still have a tracking branch setup.
head.set_tracking_branch(None)
assert head.tracking_branch() is None
remote_ref = rwrepo.remotes[0].refs[0]
assert head.set_tracking_branch(remote_ref) is head
assert head.tracking_branch() == remote_ref
head.set_tracking_branch(None)
assert head.tracking_branch() is None
special_name = "feature#123"
special_name_remote_ref = SymbolicReference.create(rwrepo, "refs/remotes/origin/%s" % special_name)
gp_tracking_branch = rwrepo.create_head("gp_tracking#123")
special_name_remote_ref = rwrepo.remotes[0].refs[special_name] # Get correct type.
gp_tracking_branch.set_tracking_branch(special_name_remote_ref)
TBranch = gp_tracking_branch.tracking_branch()
if TBranch is not None:
assert TBranch.path == special_name_remote_ref.path
git_tracking_branch = rwrepo.create_head("git_tracking#123")
rwrepo.git.branch("-u", special_name_remote_ref.name, git_tracking_branch.name)
TBranch = gp_tracking_branch.tracking_branch()
if TBranch is not None:
assert TBranch.name == special_name_remote_ref.name
# END for each head
# Verify REFLOG gets altered.
head = rwrepo.head
cur_head = head.ref
cur_commit = cur_head.commit
pcommit = cur_head.commit.parents[0].parents[0]
hlog_len = len(head.log())
blog_len = len(cur_head.log())
assert head.set_reference(pcommit, "detached head") is head
# One new log-entry.
thlog = head.log()
assert len(thlog) == hlog_len + 1
assert thlog[-1].oldhexsha == cur_commit.hexsha
assert thlog[-1].newhexsha == pcommit.hexsha
# The ref didn't change though.
assert len(cur_head.log()) == blog_len
# head changes once again, cur_head doesn't change.
head.set_reference(cur_head, "reattach head")
assert len(head.log()) == hlog_len + 2
assert len(cur_head.log()) == blog_len
# Adjusting the head-ref also adjust the head, so both reflogs are altered.
cur_head.set_commit(pcommit, "changing commit")
assert len(cur_head.log()) == blog_len + 1
assert len(head.log()) == hlog_len + 3
# With automatic dereferencing.
assert head.set_commit(cur_commit, "change commit once again") is head
assert len(head.log()) == hlog_len + 4
assert len(cur_head.log()) == blog_len + 2
# A new branch has just a single entry.
other_head = Head.create(rwrepo, "mynewhead", pcommit, logmsg="new head created")
log = other_head.log()
assert len(log) == 1
assert log[0].oldhexsha == pcommit.NULL_HEX_SHA
assert log[0].newhexsha == pcommit.hexsha
@with_rw_repo("HEAD", bare=False)
def test_set_tracking_branch_with_import(self, rwrepo):
# Prepare included config file.
included_config = osp.join(rwrepo.git_dir, "config.include")
with GitConfigParser(included_config, read_only=False) as writer:
writer.set_value("test", "value", "test")
assert osp.exists(included_config)
with rwrepo.config_writer() as writer:
writer.set_value("include", "path", included_config)
for head in rwrepo.heads:
head.set_tracking_branch(None)
assert head.tracking_branch() is None
remote_ref = rwrepo.remotes[0].refs[0]
assert head.set_tracking_branch(remote_ref) is head
assert head.tracking_branch() == remote_ref
head.set_tracking_branch(None)
assert head.tracking_branch() is None
def test_refs(self):
types_found = set()
for ref in self.rorepo.refs:
types_found.add(type(ref))
assert len(types_found) >= 3
def test_is_valid(self):
assert not Reference(self.rorepo, "refs/doesnt/exist").is_valid()
assert self.rorepo.head.is_valid()
assert self.rorepo.head.reference.is_valid()
assert not SymbolicReference(self.rorepo, "hellothere").is_valid()
def test_orig_head(self):
assert type(self.rorepo.head.orig_head()) is SymbolicReference
@with_rw_repo("0.1.6")
def test_head_checkout_detached_head(self, rw_repo):
res = rw_repo.remotes.origin.refs.master.checkout()
assert isinstance(res, SymbolicReference)
assert res.name == "HEAD"
@with_rw_repo("0.1.6")
def test_head_reset(self, rw_repo):
cur_head = rw_repo.head
old_head_commit = cur_head.commit
new_head_commit = cur_head.ref.commit.parents[0]
cur_head.reset(new_head_commit, index=True) # index only
assert cur_head.reference.commit == new_head_commit
self.assertRaises(ValueError, cur_head.reset, new_head_commit, index=False, working_tree=True)
new_head_commit = new_head_commit.parents[0]
cur_head.reset(new_head_commit, index=True, working_tree=True) # index + wt
assert cur_head.reference.commit == new_head_commit
# Paths - make sure we have something to do.
rw_repo.index.reset(old_head_commit.parents[0])
cur_head.reset(cur_head, paths="test")
cur_head.reset(new_head_commit, paths="lib")
# Hard resets with paths don't work; it's all or nothing.
self.assertRaises(
GitCommandError,
cur_head.reset,
new_head_commit,
working_tree=True,
paths="lib",
)
# We can do a mixed reset, and then checkout from the index though.
cur_head.reset(new_head_commit)
rw_repo.index.checkout(["lib"], force=True)
# Now that we have a write write repo, change the HEAD reference - it's like
# "git-reset --soft".
heads = rw_repo.heads
assert heads
for head in heads:
cur_head.reference = head
assert cur_head.reference == head
assert isinstance(cur_head.reference, Head)
assert cur_head.commit == head.commit
assert not cur_head.is_detached
# END for each head
# Detach.
active_head = heads[0]
curhead_commit = active_head.commit
cur_head.reference = curhead_commit
assert cur_head.commit == curhead_commit
assert cur_head.is_detached
self.assertRaises(TypeError, getattr, cur_head, "reference")
# Tags are references, hence we can point to them.
some_tag = rw_repo.tags[0]
cur_head.reference = some_tag
assert not cur_head.is_detached
assert cur_head.commit == some_tag.commit
assert isinstance(cur_head.reference, TagReference)
# Put HEAD back to a real head, otherwise everything else fails.
cur_head.reference = active_head
# Type check.
self.assertRaises(ValueError, setattr, cur_head, "reference", "that")
# Head handling.
commit = "HEAD"
prev_head_commit = cur_head.commit
for count, new_name in enumerate(("my_new_head", "feature/feature1")):
actual_commit = commit + "^" * count
new_head = Head.create(rw_repo, new_name, actual_commit)
assert new_head.is_detached
assert cur_head.commit == prev_head_commit
assert isinstance(new_head, Head)
# Already exists, but has the same value, so it's fine.
Head.create(rw_repo, new_name, new_head.commit)
# It's not fine with a different value.
self.assertRaises(OSError, Head.create, rw_repo, new_name, new_head.commit.parents[0])
# Force it.
new_head = Head.create(rw_repo, new_name, actual_commit, force=True)
old_path = new_head.path
old_name = new_head.name
assert new_head.rename("hello").name == "hello"
assert new_head.rename("hello/world").name == "hello/world"
assert new_head.rename(old_name).name == old_name and new_head.path == old_path
# Rename with force.
tmp_head = Head.create(rw_repo, "tmphead")
self.assertRaises(GitCommandError, tmp_head.rename, new_head)
tmp_head.rename(new_head, force=True)
assert tmp_head == new_head and tmp_head.object == new_head.object
logfile = RefLog.path(tmp_head)
assert osp.isfile(logfile)
Head.delete(rw_repo, tmp_head)
# Deletion removes the log as well.
assert not osp.isfile(logfile)
heads = rw_repo.heads
assert tmp_head not in heads and new_head not in heads
# Force on deletion testing would be missing here, code looks okay though. ;)
# END for each new head name
self.assertRaises(TypeError, RemoteReference.create, rw_repo, "some_name")
# Tag ref.
tag_name = "5.0.2"
TagReference.create(rw_repo, tag_name)
self.assertRaises(GitCommandError, TagReference.create, rw_repo, tag_name)
light_tag = TagReference.create(rw_repo, tag_name, "HEAD~1", force=True)
assert isinstance(light_tag, TagReference)
assert light_tag.name == tag_name
assert light_tag.commit == cur_head.commit.parents[0]
assert light_tag.tag is None
# Tag with tag object.
other_tag_name = "releases/1.0.2RC"
msg = "my mighty tag\nsecond line"
obj_tag = TagReference.create(rw_repo, other_tag_name, message=msg)
assert isinstance(obj_tag, TagReference)
assert obj_tag.name == other_tag_name
assert obj_tag.commit == cur_head.commit
assert obj_tag.tag is not None
TagReference.delete(rw_repo, light_tag, obj_tag)
tags = rw_repo.tags
assert light_tag not in tags and obj_tag not in tags
# Remote deletion.
remote_refs_so_far = 0
remotes = rw_repo.remotes
assert remotes
for remote in remotes:
refs = remote.refs
# If a HEAD exists, it must be deleted first. Otherwise it might end up
# pointing to an invalid ref it the ref was deleted before.
remote_head_name = "HEAD"
if remote_head_name in refs:
RemoteReference.delete(rw_repo, refs[remote_head_name])
del refs[remote_head_name]
# END handle HEAD deletion
RemoteReference.delete(rw_repo, *refs)
remote_refs_so_far += len(refs)
for ref in refs:
assert ref.remote_name == remote.name
# END for each ref to delete
assert remote_refs_so_far
for remote in remotes:
# Remotes without references should produce an empty list.
self.assertEqual(remote.refs, [])
# END for each remote
# Change where the active head points to.
if cur_head.is_detached:
cur_head.reference = rw_repo.heads[0]
head = cur_head.reference
old_commit = head.commit
head.commit = old_commit.parents[0]
assert head.commit == old_commit.parents[0]
assert head.commit == cur_head.commit
head.commit = old_commit
# Setting a non-commit as commit fails, but succeeds as object.
head_tree = head.commit.tree
self.assertRaises(ValueError, setattr, head, "commit", head_tree)
assert head.commit == old_commit # And the ref did not change.
# We allow heads to point to any object.
head.object = head_tree
assert head.object == head_tree
# Cannot query tree as commit.
self.assertRaises(TypeError, getattr, head, "commit")
# Set the commit directly using the head. This would never detach the head.
assert not cur_head.is_detached
head.object = old_commit
cur_head.reference = head.commit
assert cur_head.is_detached
parent_commit = head.commit.parents[0]
assert cur_head.is_detached
cur_head.commit = parent_commit
assert cur_head.is_detached and cur_head.commit == parent_commit
cur_head.reference = head
assert not cur_head.is_detached
cur_head.commit = parent_commit
assert not cur_head.is_detached
assert head.commit == parent_commit
# Test checkout.
active_branch = rw_repo.active_branch
for head in rw_repo.heads:
checked_out_head = head.checkout()
assert checked_out_head == head
# END for each head to checkout
# Check out with branch creation.
new_head = active_branch.checkout(b="new_head")
assert active_branch != rw_repo.active_branch
assert new_head == rw_repo.active_branch
# Checkout with force as we have a changed a file.
# Clear file.
open(new_head.commit.tree.blobs[-1].abspath, "w").close()
assert len(new_head.commit.diff(None))
# Create a new branch that is likely to touch the file we changed.
far_away_head = rw_repo.create_head("far_head", "HEAD~100")
self.assertRaises(GitCommandError, far_away_head.checkout)
assert active_branch == active_branch.checkout(force=True)
assert rw_repo.head.reference != far_away_head
# Test reference creation.
partial_ref = "sub/ref"
full_ref = "refs/%s" % partial_ref
ref = Reference.create(rw_repo, partial_ref)
assert ref.path == full_ref
assert ref.object == rw_repo.head.commit
self.assertRaises(OSError, Reference.create, rw_repo, full_ref, "HEAD~20")
# It works if it is at the same spot though and points to the same reference.
assert Reference.create(rw_repo, full_ref, "HEAD").path == full_ref
Reference.delete(rw_repo, full_ref)
# Recreate the reference using a full_ref.
ref = Reference.create(rw_repo, full_ref)
assert ref.path == full_ref
assert ref.object == rw_repo.head.commit
# Recreate using force.
ref = Reference.create(rw_repo, partial_ref, "HEAD~1", force=True)
assert ref.path == full_ref
assert ref.object == rw_repo.head.commit.parents[0]
# Rename it.
orig_obj = ref.object
for name in ("refs/absname", "rela_name", "feature/rela_name"):
ref_new_name = ref.rename(name)
assert isinstance(ref_new_name, Reference)
assert name in ref_new_name.path
assert ref_new_name.object == orig_obj
assert ref_new_name == ref
# END for each name type
# References that don't exist trigger an error if we want to access them.
self.assertRaises(ValueError, getattr, Reference(rw_repo, "refs/doesntexist"), "commit")
# Exists, fail unless we force.
ex_ref_path = far_away_head.path
self.assertRaises(OSError, ref.rename, ex_ref_path)
# If it points to the same commit it works.
far_away_head.commit = ref.commit
ref.rename(ex_ref_path)
assert ref.path == ex_ref_path and ref.object == orig_obj
assert ref.rename(ref.path).path == ex_ref_path # rename to same name
# Create symbolic refs.
symref_path = "symrefs/sym"
symref = SymbolicReference.create(rw_repo, symref_path, cur_head.reference)
assert symref.path == symref_path
assert symref.reference == cur_head.reference
self.assertRaises(
OSError,
SymbolicReference.create,
rw_repo,
symref_path,
cur_head.reference.commit,
)
# It works if the new ref points to the same reference.
assert SymbolicReference.create(rw_repo, symref.path, symref.reference).path == symref.path
SymbolicReference.delete(rw_repo, symref)
# Would raise if the symref wouldn't have been deleted (probably).
symref = SymbolicReference.create(rw_repo, symref_path, cur_head.reference)
# Test symbolic references which are not at default locations like HEAD or
# FETCH_HEAD - they may also be at spots in refs of course.
symbol_ref_path = "refs/symbol_ref"
symref = SymbolicReference(rw_repo, symbol_ref_path)
assert symref.path == symbol_ref_path
symbol_ref_abspath = osp.join(rw_repo.git_dir, symref.path)
# Set it.
symref.reference = new_head
assert symref.reference == new_head
assert osp.isfile(symbol_ref_abspath)
assert symref.commit == new_head.commit
for name in ("absname", "folder/rela_name"):
symref_new_name = symref.rename(name)
assert isinstance(symref_new_name, SymbolicReference)
assert name in symref_new_name.path
assert symref_new_name.reference == new_head
assert symref_new_name == symref
assert not symref.is_detached
# END for each ref
# Create a new non-head ref just to be sure we handle it even if packed.
Reference.create(rw_repo, full_ref)
# Test ref listing - make sure we have packed refs.
rw_repo.git.pack_refs(all=True, prune=True)
heads = rw_repo.heads
assert heads
assert new_head in heads
assert active_branch in heads
assert rw_repo.tags
# We should be able to iterate all symbolic refs as well - in that case we
# should expect only symbolic references to be returned.
for symref in SymbolicReference.iter_items(rw_repo):
assert not symref.is_detached
# When iterating references, we can get references and symrefs when deleting all
# refs, I'd expect them to be gone! Even from the packed ones.
# For this to work, we must not be on any branch.
rw_repo.head.reference = rw_repo.head.commit
deleted_refs = set()
for ref in Reference.iter_items(rw_repo):
if ref.is_detached:
ref.delete(rw_repo, ref)
deleted_refs.add(ref)
# END delete ref
# END for each ref to iterate and to delete
assert deleted_refs
for ref in Reference.iter_items(rw_repo):
if ref.is_detached:
assert ref not in deleted_refs
# END for each ref
# Reattach head - head will not be returned if it is not a symbolic ref.
rw_repo.head.reference = Head.create(rw_repo, "master")
# At least the head should still exist.
assert osp.isfile(osp.join(rw_repo.git_dir, "HEAD"))
refs = list(SymbolicReference.iter_items(rw_repo))
assert len(refs) == 1
# Test creation of new refs from scratch.
for path in ("basename", "dir/somename", "dir2/subdir/basename"):
# REFERENCES
############
fpath = Reference.to_full_path(path)
ref_fp = Reference.from_path(rw_repo, fpath)
assert not ref_fp.is_valid()
ref = Reference(rw_repo, fpath)
assert ref == ref_fp
# Can be created by assigning a commit.
ref.commit = rw_repo.head.commit
assert ref.is_valid()
# If the assignment raises, the ref doesn't exist.
Reference.delete(ref.repo, ref.path)
assert not ref.is_valid()
self.assertRaises(ValueError, setattr, ref, "commit", "nonsense")
assert not ref.is_valid()
# I am sure I had my reason to make it a class method at first, but now it
# doesn't make so much sense anymore, want an instance method as well. See:
# http://byronimo.lighthouseapp.com/projects/51787-gitpython/tickets/27
Reference.delete(ref.repo, ref.path)
assert not ref.is_valid()
ref.object = rw_repo.head.commit
assert ref.is_valid()
Reference.delete(ref.repo, ref.path)
assert not ref.is_valid()
self.assertRaises(ValueError, setattr, ref, "object", "nonsense")
assert not ref.is_valid()
# END for each path
@with_rw_repo("0.1.6")
def test_tag_message(self, rw_repo):
tag_ref = TagReference.create(rw_repo, "test-message-1", message="test")
assert tag_ref.tag.message == "test"
tag_ref = TagReference.create(rw_repo, "test-message-2", logmsg="test")
assert tag_ref.tag.message == "test"
tag_ref = TagReference.create(
rw_repo,
"test-message-3",
# Logmsg should take precedence over "message".
message="test1",
logmsg="test2",
)
assert tag_ref.tag.message == "test2"
def test_dereference_recursive(self):
# For now, just test the HEAD.
assert SymbolicReference.dereference_recursive(self.rorepo, "HEAD")
def test_reflog(self):
assert isinstance(self.rorepo.heads.master.log(), RefLog)
def test_refs_outside_repo(self):
# Create a file containing a valid reference outside the repository. Attempting
# to access it should raise an exception, due to it containing a parent
# directory reference ('..'). This tests for CVE-2023-41040.
git_dir = Path(self.rorepo.git_dir)
repo_parent_dir = git_dir.parent.parent
with tempfile.NamedTemporaryFile(dir=repo_parent_dir) as ref_file:
ref_file.write(b"91b464cd624fe22fbf54ea22b85a7e5cca507cfe")
ref_file.flush()
ref_file_name = Path(ref_file.name).name
self.assertRaises(BadName, self.rorepo.commit, f"../../{ref_file_name}")
def test_reference_create_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_path = base_dir / "outside_write.txt"
self.assertRaises(ValueError, Reference.create, repo, "../../../outside_write.txt", "HEAD")
assert not outside_path.exists()
def test_symbolic_reference_create_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_path = base_dir / "outside_write.txt"
self.assertRaises(ValueError, SymbolicReference.create, repo, "../../outside_write.txt", "HEAD")
assert not outside_path.exists()
def test_symbolic_reference_set_reference_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_path = base_dir / "outside_write.txt"
self.assertRaises(ValueError, SymbolicReference(repo, "../../outside_write.txt").set_reference, "HEAD")
assert not outside_path.exists()
def test_symbolic_reference_rename_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_path = base_dir / "outside_move.txt"
ref = SymbolicReference.create(repo, "SAFE_RENAME_SOURCE", "HEAD")
self.assertRaises(ValueError, ref.rename, "../../outside_move.txt")
assert not outside_path.exists()
assert Path(ref.abspath).is_file()
def test_symbolic_reference_delete_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_path = base_dir / "outside_delete.txt"
outside_path.write_text("do not delete\n", encoding="utf-8")
self.assertRaises(ValueError, SymbolicReference.delete, repo, "../../outside_delete.txt")
assert outside_path.read_text(encoding="utf-8") == "do not delete\n"
def test_symbolic_reference_log_append_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_path = base_dir / "outside_reflog.txt"
ref = SymbolicReference(repo, "../../../outside_reflog.txt")
self.assertRaises(
ValueError, ref.log_append, Commit.NULL_BIN_SHA, "do not write", repo.head.commit.binsha
)
assert not outside_path.exists()
def test_symbolic_reference_set_reference_rejects_symlink_escape(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
with self._repo_with_initial_commit(base_dir) as repo:
outside_dir = base_dir / "outside_refs"
outside_dir.mkdir()
outside_path = outside_dir / "escaped"
refs_heads_dir = Path(repo.common_dir) / "refs" / "heads"
refs_heads_dir.mkdir(parents=True, exist_ok=True)
symlink_path = refs_heads_dir / "link_out"
try:
symlink_path.symlink_to(outside_dir, target_is_directory=True)
except (OSError, NotImplementedError) as ex:
self.skipTest("symlinks unavailable on this platform: %s" % ex)
if osp.realpath(symlink_path / "escaped") == osp.abspath(symlink_path / "escaped"):
self.skipTest("realpath does not resolve directory symlinks on this platform")
ref = SymbolicReference(repo, "refs/heads/link_out/escaped")
self.assertRaises(ValueError, ref.set_reference, "HEAD")
assert not outside_path.exists()
def test_remote_reference_delete_cleanup_rejects_path_traversal(self):
with tempfile.TemporaryDirectory() as tmp_dir:
base_dir = Path(tmp_dir)
git_dir = base_dir / "repo" / ".git"
git_dir.mkdir(parents=True)
outside_path = base_dir / "outside_remote_delete.txt"
outside_path.write_text("do not delete\n", encoding="utf-8")
class GitStub:
branch_called = False
def branch(self, *args):
self.branch_called = True
class RepoStub:
pass
repo = RepoStub()
repo.git = GitStub()
repo.common_dir = str(git_dir)
repo.git_dir = str(git_dir)
ref = RemoteReference(repo, "../../outside_remote_delete.txt", check_path=False)
self.assertRaises(ValueError, RemoteReference.delete, repo, ref)
assert not repo.git.branch_called
assert outside_path.read_text(encoding="utf-8") == "do not delete\n"
def test_validity_ref_names(self):
"""Ensure ref names are checked for validity.
This is based on the rules specified in:
https://git-scm.com/docs/git-check-ref-format/#_description
"""
check_ref = SymbolicReference._check_ref_name_valid
# Rule 1
self.assertRaises(ValueError, check_ref, ".ref/begins/with/dot")
self.assertRaises(ValueError, check_ref, "ref/component/.begins/with/dot")
self.assertRaises(ValueError, check_ref, "ref/ends/with/a.lock")
self.assertRaises(ValueError, check_ref, "ref/component/ends.lock/with/period_lock")
# Rule 2
check_ref("valid_one_level_refname")
# Rule 3
self.assertRaises(ValueError, check_ref, "ref/contains/../double/period")
# Rule 4
for c in " ~^:":
self.assertRaises(ValueError, check_ref, f"ref/contains/invalid{c}/character")
for code in range(0, 32):
self.assertRaises(ValueError, check_ref, f"ref/contains/invalid{chr(code)}/ASCII/control_character")
self.assertRaises(ValueError, check_ref, f"ref/contains/invalid{chr(127)}/ASCII/control_character")
# Rule 5
for c in "*?[":
self.assertRaises(ValueError, check_ref, f"ref/contains/invalid{c}/character")
# Rule 6
self.assertRaises(ValueError, check_ref, "/ref/begins/with/slash")
self.assertRaises(ValueError, check_ref, "ref/ends/with/slash/")
self.assertRaises(ValueError, check_ref, "ref/contains//double/slash/")
# Rule 7
self.assertRaises(ValueError, check_ref, "ref/ends/with/dot.")
# Rule 8
self.assertRaises(ValueError, check_ref, "ref/contains@{/at_brace")
# Rule 9
self.assertRaises(ValueError, check_ref, "@")
# Rule 10
self.assertRaises(ValueError, check_ref, "ref/contain\\s/backslash")
# Valid reference name should not raise.
check_ref("valid/ref/name")
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