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revwalk: refuse push of non-commit objects

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Check the type of the pushed object immediately instead of starting the
walk and failing in between.
This commit is contained in:
Michael Schubert 2012-08-27 10:51:01 +02:00
parent 2b175ca972
commit 4e323ef0a8
2 changed files with 22 additions and 6 deletions
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20
src/revwalk.c
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@ -264,12 +264,7 @@ static int commit_parse(git_revwalk *walk, commit_object *commit)
if ((error = git_odb_read(&obj, walk->odb, &commit->oid)) < 0)
return error;
if (obj->raw.type != GIT_OBJ_COMMIT) {
git_odb_object_free(obj);
giterr_set(GITERR_INVALID, "Failed to parse commit. Object is no commit object");
return -1;
}
assert(obj->raw.type == GIT_OBJ_COMMIT);
error = commit_quick_parse(walk, commit, &obj->raw);
git_odb_object_free(obj);
@ -515,8 +510,21 @@ static int process_commit_parents(git_revwalk *walk, commit_object *commit)
static int push_commit(git_revwalk *walk, const git_oid *oid, int uninteresting)
{
git_object *obj;
git_otype type;
commit_object *commit;
if (git_object_lookup(&obj, walk->repo, oid, GIT_OBJ_ANY) < 0)
return -1;
type = git_object_type(obj);
git_object_free(obj);
if (type != GIT_OBJ_COMMIT) {
giterr_set(GITERR_INVALID, "Object is no commit object");
return -1;
}
commit = commit_lookup(walk, oid);
if (commit == NULL)
return -1; /* error already reported by failed lookup */

8
tests-clar/revwalk/basic.c
View File

@ -179,3 +179,11 @@ void test_revwalk_basic__push_head_hide_ref_nobase(void)
/* git log HEAD --oneline --not refs/heads/packed | wc -l => 7 */
cl_assert(i == 7);
}
void test_revwalk_basic__disallow_non_commit(void)
{
git_oid oid;
cl_git_pass(git_oid_fromstr(&oid, "521d87c1ec3aef9824daf6d96cc0ae3710766d91"));
cl_git_fail(git_revwalk_push(_walk, &oid));
}