git/builtin/check-ref-format.c
Ævar Arnfjörð Bjarmason 99b6c45d8f check-ref-format: fix trivial memory leak
Fix a memory leak in "git check-ref-format" that's been present in the
code in one form or another since 38eedc634b (git check-ref-format
--print, 2009-10-12), the code got substantially refactored in
cfbe22f03f (check-ref-format: handle subcommands in separate
functions, 2010-08-05).

As a result we can mark a test as passing with SANITIZE=leak using
"TEST_PASSES_SANITIZE_LEAK=true".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-01 11:43:42 -07:00

97 lines
2.3 KiB
C

/*
* GIT - The information manager from hell
*/
#include "cache.h"
#include "refs.h"
#include "builtin.h"
#include "strbuf.h"
static const char builtin_check_ref_format_usage[] =
"git check-ref-format [--normalize] [<options>] <refname>\n"
" or: git check-ref-format --branch <branchname-shorthand>";
/*
* Return a copy of refname but with leading slashes removed and runs
* of adjacent slashes replaced with single slashes.
*
* This function is similar to normalize_path_copy(), but stripped down
* to meet check_ref_format's simpler needs.
*/
static char *collapse_slashes(const char *refname)
{
char *ret = xmallocz(strlen(refname));
char ch;
char prev = '/';
char *cp = ret;
while ((ch = *refname++) != '\0') {
if (prev == '/' && ch == prev)
continue;
*cp++ = ch;
prev = ch;
}
*cp = '\0';
return ret;
}
static int check_ref_format_branch(const char *arg)
{
struct strbuf sb = STRBUF_INIT;
const char *name;
int nongit;
setup_git_directory_gently(&nongit);
if (strbuf_check_branch_ref(&sb, arg) ||
!skip_prefix(sb.buf, "refs/heads/", &name))
die("'%s' is not a valid branch name", arg);
printf("%s\n", name);
strbuf_release(&sb);
return 0;
}
int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
{
int i;
int normalize = 0;
int flags = 0;
const char *refname;
char *to_free = NULL;
int ret = 1;
if (argc == 2 && !strcmp(argv[1], "-h"))
usage(builtin_check_ref_format_usage);
if (argc == 3 && !strcmp(argv[1], "--branch"))
return check_ref_format_branch(argv[2]);
for (i = 1; i < argc && argv[i][0] == '-'; i++) {
if (!strcmp(argv[i], "--normalize") || !strcmp(argv[i], "--print"))
normalize = 1;
else if (!strcmp(argv[i], "--allow-onelevel"))
flags |= REFNAME_ALLOW_ONELEVEL;
else if (!strcmp(argv[i], "--no-allow-onelevel"))
flags &= ~REFNAME_ALLOW_ONELEVEL;
else if (!strcmp(argv[i], "--refspec-pattern"))
flags |= REFNAME_REFSPEC_PATTERN;
else
usage(builtin_check_ref_format_usage);
}
if (! (i == argc - 1))
usage(builtin_check_ref_format_usage);
refname = argv[i];
if (normalize)
refname = to_free = collapse_slashes(refname);
if (check_refname_format(refname, flags))
goto cleanup;
if (normalize)
printf("%s\n", refname);
ret = 0;
cleanup:
free(to_free);
return ret;
}