int refname_is_safe(const char *refname)
{
- if (starts_with(refname, "refs/")) {
+ const char *rest;
+
+ if (skip_prefix(refname, "refs/", &rest)) {
char *buf;
int result;
+ size_t restlen = strlen(rest);
+
+ /* rest must not be empty, or start or end with "/" */
+ if (!restlen || *rest == '/' || rest[restlen - 1] == '/')
+ return 0;
- buf = xmallocz(strlen(refname));
/*
* Does the refname try to escape refs/?
* For example: refs/foo/../bar is safe but refs/foo/../../bar
* is not.
*/
- result = !normalize_path_copy(buf, refname + strlen("refs/"));
+ buf = xmallocz(restlen);
+ result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest);
free(buf);
return result;
}
- while (*refname) {
+
+ do {
if (!isupper(*refname) && *refname != '_')
return 0;
refname++;
- }
+ } while (*refname);
return 1;
}
filename = git_path("%s", pseudoref);
fd = hold_lock_file_for_update(&lock, filename, LOCK_DIE_ON_ERROR);
if (fd < 0) {
- strbuf_addf(err, "Could not open '%s' for writing: %s",
+ strbuf_addf(err, "could not open '%s' for writing: %s",
filename, strerror(errno));
return -1;
}
if (read_ref(pseudoref, actual_old_sha1))
die("could not read ref '%s'", pseudoref);
if (hashcmp(actual_old_sha1, old_sha1)) {
- strbuf_addf(err, "Unexpected sha1 when writing %s", pseudoref);
+ strbuf_addf(err, "unexpected sha1 when writing '%s'", pseudoref);
rollback_lock_file(&lock);
goto done;
}
}
if (write_in_full(fd, buf.buf, buf.len) != buf.len) {
- strbuf_addf(err, "Could not write to '%s'", filename);
+ strbuf_addf(err, "could not write to '%s'", filename);
rollback_lock_file(&lock);
goto done;
}
free(transaction);
}
-static struct ref_update *add_update(struct ref_transaction *transaction,
- const char *refname)
+struct ref_update *ref_transaction_add_update(
+ struct ref_transaction *transaction,
+ const char *refname, unsigned int flags,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ const char *msg)
{
struct ref_update *update;
+
+ if (transaction->state != REF_TRANSACTION_OPEN)
+ die("BUG: update called for transaction that is not open");
+
+ if ((flags & REF_ISPRUNING) && !(flags & REF_NODEREF))
+ die("BUG: REF_ISPRUNING set without REF_NODEREF");
+
FLEX_ALLOC_STR(update, refname, refname);
ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc);
transaction->updates[transaction->nr++] = update;
+
+ update->flags = flags;
+
+ if (flags & REF_HAVE_NEW)
+ hashcpy(update->new_sha1, new_sha1);
+ if (flags & REF_HAVE_OLD)
+ hashcpy(update->old_sha1, old_sha1);
+ if (msg)
+ update->msg = xstrdup(msg);
return update;
}
unsigned int flags, const char *msg,
struct strbuf *err)
{
- struct ref_update *update;
-
assert(err);
- if (transaction->state != REF_TRANSACTION_OPEN)
- die("BUG: update called for transaction that is not open");
-
if (new_sha1 && !is_null_sha1(new_sha1) &&
check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
- strbuf_addf(err, "refusing to update ref with bad name %s",
+ strbuf_addf(err, "refusing to update ref with bad name '%s'",
refname);
return -1;
}
- update = add_update(transaction, refname);
- if (new_sha1) {
- hashcpy(update->new_sha1, new_sha1);
- flags |= REF_HAVE_NEW;
- }
- if (old_sha1) {
- hashcpy(update->old_sha1, old_sha1);
- flags |= REF_HAVE_OLD;
- }
- update->flags = flags;
- if (msg)
- update->msg = xstrdup(msg);
+ flags |= (new_sha1 ? REF_HAVE_NEW : 0) | (old_sha1 ? REF_HAVE_OLD : 0);
+
+ ref_transaction_add_update(transaction, refname, flags,
+ new_sha1, old_sha1, msg);
return 0;
}
strbuf_release(&err);
return ret;
}
+
+int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
+{
+ struct object_id oid;
+ int flag;
+
+ if (submodule) {
+ if (resolve_gitlink_ref(submodule, "HEAD", oid.hash) == 0)
+ return fn("HEAD", &oid, 0, cb_data);
+
+ return 0;
+ }
+
+ if (!read_ref_full("HEAD", RESOLVE_REF_READING, oid.hash, &flag))
+ return fn("HEAD", &oid, flag, cb_data);
+
+ return 0;
+}
+
+int head_ref(each_ref_fn fn, void *cb_data)
+{
+ return head_ref_submodule(NULL, fn, cb_data);
+}
+
+int for_each_ref(each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(NULL, "", fn, 0, 0, cb_data);
+}
+
+int for_each_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(submodule, "", fn, 0, 0, cb_data);
+}
+
+int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(NULL, prefix, fn, strlen(prefix), 0, cb_data);
+}
+
+int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
+{
+ unsigned int flag = 0;
+
+ if (broken)
+ flag = DO_FOR_EACH_INCLUDE_BROKEN;
+ return do_for_each_ref(NULL, prefix, fn, 0, flag, cb_data);
+}
+
+int for_each_ref_in_submodule(const char *submodule, const char *prefix,
+ each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(submodule, prefix, fn, strlen(prefix), 0, cb_data);
+}
+
+int for_each_replace_ref(each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(NULL, git_replace_ref_base, fn,
+ strlen(git_replace_ref_base), 0, cb_data);
+}
+
+int for_each_namespaced_ref(each_ref_fn fn, void *cb_data)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int ret;
+ strbuf_addf(&buf, "%srefs/", get_git_namespace());
+ ret = do_for_each_ref(NULL, buf.buf, fn, 0, 0, cb_data);
+ strbuf_release(&buf);
+ return ret;
+}
+
+int for_each_rawref(each_ref_fn fn, void *cb_data)
+{
+ return do_for_each_ref(NULL, "", fn, 0,
+ DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
+}
+
+/* This function needs to return a meaningful errno on failure */
+const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
+ unsigned char *sha1, int *flags)
+{
+ static struct strbuf sb_refname = STRBUF_INIT;
+ int unused_flags;
+ int symref_count;
+
+ if (!flags)
+ flags = &unused_flags;
+
+ *flags = 0;
+
+ if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
+ if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
+ !refname_is_safe(refname)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ /*
+ * dwim_ref() uses REF_ISBROKEN to distinguish between
+ * missing refs and refs that were present but invalid,
+ * to complain about the latter to stderr.
+ *
+ * We don't know whether the ref exists, so don't set
+ * REF_ISBROKEN yet.
+ */
+ *flags |= REF_BAD_NAME;
+ }
+
+ for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
+ unsigned int read_flags = 0;
+
+ if (read_raw_ref(refname, sha1, &sb_refname, &read_flags)) {
+ *flags |= read_flags;
+ if (errno != ENOENT || (resolve_flags & RESOLVE_REF_READING))
+ return NULL;
+ hashclr(sha1);
+ if (*flags & REF_BAD_NAME)
+ *flags |= REF_ISBROKEN;
+ return refname;
+ }
+
+ *flags |= read_flags;
+
+ if (!(read_flags & REF_ISSYMREF)) {
+ if (*flags & REF_BAD_NAME) {
+ hashclr(sha1);
+ *flags |= REF_ISBROKEN;
+ }
+ return refname;
+ }
+
+ refname = sb_refname.buf;
+ if (resolve_flags & RESOLVE_REF_NO_RECURSE) {
+ hashclr(sha1);
+ return refname;
+ }
+ if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
+ if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
+ !refname_is_safe(refname)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ *flags |= REF_ISBROKEN | REF_BAD_NAME;
+ }
+ }
+
+ errno = ELOOP;
+ return NULL;
+}
projects / thirdparty / git.git / blobdiff