mirror of
https://github.com/git/git.git
synced 2024-11-24 02:17:02 +08:00
1b1dd23f2d
When you misuse a git command, you are shown the usage string. But this is currently shown in the dashed form. So if you just copy what you see, it will not work, when the dashed form is no longer supported. This patch makes git commands show the dash-less version. For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh generates a dash-less usage string now. Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
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* Builtin "git verify-tag"
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*
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* Copyright (c) 2007 Carlos Rica <jasampler@gmail.com>
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*
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* Based on git-verify-tag.sh
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "tag.h"
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#include "run-command.h"
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#include <signal.h>
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static const char builtin_verify_tag_usage[] =
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"git verify-tag [-v|--verbose] <tag>...";
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#define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
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static int run_gpg_verify(const char *buf, unsigned long size, int verbose)
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{
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struct child_process gpg;
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const char *args_gpg[] = {"gpg", "--verify", "FILE", "-", NULL};
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char path[PATH_MAX], *eol;
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size_t len;
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int fd, ret;
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fd = git_mkstemp(path, PATH_MAX, ".git_vtag_tmpXXXXXX");
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if (fd < 0)
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return error("could not create temporary file '%s': %s",
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path, strerror(errno));
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if (write_in_full(fd, buf, size) < 0)
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return error("failed writing temporary file '%s': %s",
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path, strerror(errno));
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close(fd);
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/* find the length without signature */
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len = 0;
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while (len < size && prefixcmp(buf + len, PGP_SIGNATURE)) {
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eol = memchr(buf + len, '\n', size - len);
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len += eol ? eol - (buf + len) + 1 : size - len;
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}
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if (verbose)
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write_in_full(1, buf, len);
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memset(&gpg, 0, sizeof(gpg));
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gpg.argv = args_gpg;
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gpg.in = -1;
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args_gpg[2] = path;
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if (start_command(&gpg)) {
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unlink(path);
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return error("could not run gpg.");
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}
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write_in_full(gpg.in, buf, len);
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close(gpg.in);
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ret = finish_command(&gpg);
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unlink(path);
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return ret;
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}
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static int verify_tag(const char *name, int verbose)
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{
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enum object_type type;
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unsigned char sha1[20];
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char *buf;
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unsigned long size;
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int ret;
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if (get_sha1(name, sha1))
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return error("tag '%s' not found.", name);
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type = sha1_object_info(sha1, NULL);
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if (type != OBJ_TAG)
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return error("%s: cannot verify a non-tag object of type %s.",
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name, typename(type));
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buf = read_sha1_file(sha1, &type, &size);
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if (!buf)
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return error("%s: unable to read file.", name);
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ret = run_gpg_verify(buf, size, verbose);
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free(buf);
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return ret;
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}
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int cmd_verify_tag(int argc, const char **argv, const char *prefix)
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{
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int i = 1, verbose = 0, had_error = 0;
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git_config(git_default_config, NULL);
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if (argc == 1)
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usage(builtin_verify_tag_usage);
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if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--verbose")) {
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verbose = 1;
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i++;
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}
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/* sometimes the program was terminated because this signal
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* was received in the process of writing the gpg input: */
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signal(SIGPIPE, SIG_IGN);
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while (i < argc)
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if (verify_tag(argv[i++], verbose))
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had_error = 1;
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return had_error;
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}
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