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/*
* Builtin "git verify-tag"
*
* Copyright (c) 2007 Carlos Rica <jasampler@gmail.com>
*
* Based on git-verify-tag.sh
*/
#include "cache.h"
#include "builtin.h"
#include "tag.h"
#include "run-command.h"
#include <signal.h>
#include "parse-options.h"
#include "gpg-interface.h"
static const char * const verify_tag_usage[] = {
N_("git verify-tag [-v | --verbose] <tag>..."),
NULL
};
static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags)
{
struct signature_check sigc;
int len;
int ret;
memset(&sigc, 0, sizeof(sigc));
len = parse_signature(buf, size);
if (size == len) {
if (flags & GPG_VERIFY_VERBOSE)
write_in_full(1, buf, len);
return error("no signature found");
}
ret = check_signature(buf, len, buf + len, size - len, &sigc);
print_signature_buffer(&sigc, flags);
signature_check_clear(&sigc);
return ret;
}
static int verify_tag(const char *name, unsigned flags)
{
enum object_type type;
unsigned char sha1[20];
char *buf;
unsigned long size;
int ret;
if (get_sha1(name, sha1))
return error("tag '%s' not found.", name);
type = sha1_object_info(sha1, NULL);
if (type != OBJ_TAG)
return error("%s: cannot verify a non-tag object of type %s.",
name, typename(type));
buf = read_sha1_file(sha1, &type, &size);
if (!buf)
return error("%s: unable to read file.", name);
ret = run_gpg_verify(buf, size, flags);
free(buf);
return ret;
}
static int git_verify_tag_config(const char *var, const char *value, void *cb)
{
int status = git_gpg_config(var, value, cb);
if (status)
return status;
return git_default_config(var, value, cb);
}
int cmd_verify_tag(int argc, const char **argv, const char *prefix)
{
int i = 1, verbose = 0, had_error = 0;
unsigned flags = 0;
const struct option verify_tag_options[] = {
OPT__VERBOSE(&verbose, N_("print tag contents")),
OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), GPG_VERIFY_RAW),
OPT_END()
};
git_config(git_verify_tag_config, NULL);
argc = parse_options(argc, argv, prefix, verify_tag_options,
verify_tag_usage, PARSE_OPT_KEEP_ARGV0);
if (argc <= i)
usage_with_options(verify_tag_usage, verify_tag_options);
if (verbose)
flags |= GPG_VERIFY_VERBOSE;
/* sometimes the program was terminated because this signal
* was received in the process of writing the gpg input: */
signal(SIGPIPE, SIG_IGN);
while (i < argc)
if (verify_tag(argv[i++], flags))
had_error = 1;
return had_error;
}
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