| /* |
| * Builtin "git tag" |
| * |
| * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>, |
| * Carlos Rica <jasampler@gmail.com> |
| * Based on git-tag.sh and mktag.c by Linus Torvalds. |
| */ |
| |
| #include "cache.h" |
| #include "builtin.h" |
| #include "refs.h" |
| #include "tag.h" |
| #include "run-command.h" |
| #include "parse-options.h" |
| |
| static const char * const git_tag_usage[] = { |
| "git tag [-a|-s|-u <key-id>] [-f] [-m <msg>|-F <file>] <tagname> [<head>]", |
| "git tag -d <tagname>...", |
| "git tag -l [-n[<num>]] [<pattern>]", |
| "git tag -v <tagname>...", |
| NULL |
| }; |
| |
| static char signingkey[1000]; |
| |
| struct tag_filter { |
| const char *pattern; |
| int lines; |
| struct commit_list *with_commit; |
| }; |
| |
| #define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----" |
| |
| static int show_reference(const char *refname, const unsigned char *sha1, |
| int flag, void *cb_data) |
| { |
| struct tag_filter *filter = cb_data; |
| |
| if (!fnmatch(filter->pattern, refname, 0)) { |
| int i; |
| unsigned long size; |
| enum object_type type; |
| char *buf, *sp, *eol; |
| size_t len; |
| |
| if (filter->with_commit) { |
| struct commit *commit; |
| |
| commit = lookup_commit_reference_gently(sha1, 1); |
| if (!commit) |
| return 0; |
| if (!is_descendant_of(commit, filter->with_commit)) |
| return 0; |
| } |
| |
| if (!filter->lines) { |
| printf("%s\n", refname); |
| return 0; |
| } |
| printf("%-15s ", refname); |
| |
| buf = read_sha1_file(sha1, &type, &size); |
| if (!buf || !size) |
| return 0; |
| |
| /* skip header */ |
| sp = strstr(buf, "\n\n"); |
| if (!sp) { |
| free(buf); |
| return 0; |
| } |
| /* only take up to "lines" lines, and strip the signature */ |
| for (i = 0, sp += 2; |
| i < filter->lines && sp < buf + size && |
| prefixcmp(sp, PGP_SIGNATURE "\n"); |
| i++) { |
| if (i) |
| printf("\n "); |
| eol = memchr(sp, '\n', size - (sp - buf)); |
| len = eol ? eol - sp : size - (sp - buf); |
| fwrite(sp, len, 1, stdout); |
| if (!eol) |
| break; |
| sp = eol + 1; |
| } |
| putchar('\n'); |
| free(buf); |
| } |
| |
| return 0; |
| } |
| |
| static int list_tags(const char *pattern, int lines, |
| struct commit_list *with_commit) |
| { |
| struct tag_filter filter; |
| |
| if (pattern == NULL) |
| pattern = "*"; |
| |
| filter.pattern = pattern; |
| filter.lines = lines; |
| filter.with_commit = with_commit; |
| |
| for_each_tag_ref(show_reference, (void *) &filter); |
| |
| return 0; |
| } |
| |
| typedef int (*each_tag_name_fn)(const char *name, const char *ref, |
| const unsigned char *sha1); |
| |
| static int for_each_tag_name(const char **argv, each_tag_name_fn fn) |
| { |
| const char **p; |
| char ref[PATH_MAX]; |
| int had_error = 0; |
| unsigned char sha1[20]; |
| |
| for (p = argv; *p; p++) { |
| if (snprintf(ref, sizeof(ref), "refs/tags/%s", *p) |
| >= sizeof(ref)) { |
| error("tag name too long: %.*s...", 50, *p); |
| had_error = 1; |
| continue; |
| } |
| if (!resolve_ref(ref, sha1, 1, NULL)) { |
| error("tag '%s' not found.", *p); |
| had_error = 1; |
| continue; |
| } |
| if (fn(*p, ref, sha1)) |
| had_error = 1; |
| } |
| return had_error; |
| } |
| |
| static int delete_tag(const char *name, const char *ref, |
| const unsigned char *sha1) |
| { |
| if (delete_ref(ref, sha1, 0)) |
| return 1; |
| printf("Deleted tag '%s' (was %s)\n", name, find_unique_abbrev(sha1, DEFAULT_ABBREV)); |
| return 0; |
| } |
| |
| static int verify_tag(const char *name, const char *ref, |
| const unsigned char *sha1) |
| { |
| const char *argv_verify_tag[] = {"git-verify-tag", |
| "-v", "SHA1_HEX", NULL}; |
| argv_verify_tag[2] = sha1_to_hex(sha1); |
| |
| if (run_command_v_opt(argv_verify_tag, 0)) |
| return error("could not verify the tag '%s'", name); |
| return 0; |
| } |
| |
| static int do_sign(struct strbuf *buffer) |
| { |
| struct child_process gpg; |
| const char *args[4]; |
| char *bracket; |
| int len; |
| int i, j; |
| |
| if (!*signingkey) { |
| if (strlcpy(signingkey, git_committer_info(IDENT_ERROR_ON_NO_NAME), |
| sizeof(signingkey)) > sizeof(signingkey) - 1) |
| return error("committer info too long."); |
| bracket = strchr(signingkey, '>'); |
| if (bracket) |
| bracket[1] = '\0'; |
| } |
| |
| /* When the username signingkey is bad, program could be terminated |
| * because gpg exits without reading and then write gets SIGPIPE. */ |
| signal(SIGPIPE, SIG_IGN); |
| |
| memset(&gpg, 0, sizeof(gpg)); |
| gpg.argv = args; |
| gpg.in = -1; |
| gpg.out = -1; |
| args[0] = "gpg"; |
| args[1] = "-bsau"; |
| args[2] = signingkey; |
| args[3] = NULL; |
| |
| if (start_command(&gpg)) |
| return error("could not run gpg."); |
| |
| if (write_in_full(gpg.in, buffer->buf, buffer->len) != buffer->len) { |
| close(gpg.in); |
| close(gpg.out); |
| finish_command(&gpg); |
| return error("gpg did not accept the tag data"); |
| } |
| close(gpg.in); |
| len = strbuf_read(buffer, gpg.out, 1024); |
| close(gpg.out); |
| |
| if (finish_command(&gpg) || !len || len < 0) |
| return error("gpg failed to sign the tag"); |
| |
| /* Strip CR from the line endings, in case we are on Windows. */ |
| for (i = j = 0; i < buffer->len; i++) |
| if (buffer->buf[i] != '\r') { |
| if (i != j) |
| buffer->buf[j] = buffer->buf[i]; |
| j++; |
| } |
| strbuf_setlen(buffer, j); |
| |
| return 0; |
| } |
| |
| static const char tag_template[] = |
| "\n" |
| "#\n" |
| "# Write a tag message\n" |
| "#\n"; |
| |
| static void set_signingkey(const char *value) |
| { |
| if (strlcpy(signingkey, value, sizeof(signingkey)) >= sizeof(signingkey)) |
| die("signing key value too long (%.10s...)", value); |
| } |
| |
| static int git_tag_config(const char *var, const char *value, void *cb) |
| { |
| if (!strcmp(var, "user.signingkey")) { |
| if (!value) |
| return config_error_nonbool(var); |
| set_signingkey(value); |
| return 0; |
| } |
| |
| return git_default_config(var, value, cb); |
| } |
| |
| static void write_tag_body(int fd, const unsigned char *sha1) |
| { |
| unsigned long size; |
| enum object_type type; |
| char *buf, *sp, *eob; |
| size_t len; |
| |
| buf = read_sha1_file(sha1, &type, &size); |
| if (!buf) |
| return; |
| /* skip header */ |
| sp = strstr(buf, "\n\n"); |
| |
| if (!sp || !size || type != OBJ_TAG) { |
| free(buf); |
| return; |
| } |
| sp += 2; /* skip the 2 LFs */ |
| eob = strstr(sp, "\n" PGP_SIGNATURE "\n"); |
| if (eob) |
| len = eob - sp; |
| else |
| len = buf + size - sp; |
| write_or_die(fd, sp, len); |
| |
| free(buf); |
| } |
| |
| static int build_tag_object(struct strbuf *buf, int sign, unsigned char *result) |
| { |
| if (sign && do_sign(buf) < 0) |
| return error("unable to sign the tag"); |
| if (write_sha1_file(buf->buf, buf->len, tag_type, result) < 0) |
| return error("unable to write tag file"); |
| return 0; |
| } |
| |
| static void create_tag(const unsigned char *object, const char *tag, |
| struct strbuf *buf, int message, int sign, |
| unsigned char *prev, unsigned char *result) |
| { |
| enum object_type type; |
| char header_buf[1024]; |
| int header_len; |
| char *path = NULL; |
| |
| type = sha1_object_info(object, NULL); |
| if (type <= OBJ_NONE) |
| die("bad object type."); |
| |
| header_len = snprintf(header_buf, sizeof(header_buf), |
| "object %s\n" |
| "type %s\n" |
| "tag %s\n" |
| "tagger %s\n\n", |
| sha1_to_hex(object), |
| typename(type), |
| tag, |
| git_committer_info(IDENT_ERROR_ON_NO_NAME)); |
| |
| if (header_len > sizeof(header_buf) - 1) |
| die("tag header too big."); |
| |
| if (!message) { |
| int fd; |
| |
| /* write the template message before editing: */ |
| path = git_pathdup("TAG_EDITMSG"); |
| fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600); |
| if (fd < 0) |
| die_errno("could not create file '%s'", path); |
| |
| if (!is_null_sha1(prev)) |
| write_tag_body(fd, prev); |
| else |
| write_or_die(fd, tag_template, strlen(tag_template)); |
| close(fd); |
| |
| if (launch_editor(path, buf, NULL)) { |
| fprintf(stderr, |
| "Please supply the message using either -m or -F option.\n"); |
| exit(1); |
| } |
| } |
| |
| stripspace(buf, 1); |
| |
| if (!message && !buf->len) |
| die("no tag message?"); |
| |
| strbuf_insert(buf, 0, header_buf, header_len); |
| |
| if (build_tag_object(buf, sign, result) < 0) { |
| if (path) |
| fprintf(stderr, "The tag message has been left in %s\n", |
| path); |
| exit(128); |
| } |
| if (path) { |
| unlink_or_warn(path); |
| free(path); |
| } |
| } |
| |
| struct msg_arg { |
| int given; |
| struct strbuf buf; |
| }; |
| |
| static int parse_msg_arg(const struct option *opt, const char *arg, int unset) |
| { |
| struct msg_arg *msg = opt->value; |
| |
| if (!arg) |
| return -1; |
| if (msg->buf.len) |
| strbuf_addstr(&(msg->buf), "\n\n"); |
| strbuf_addstr(&(msg->buf), arg); |
| msg->given = 1; |
| return 0; |
| } |
| |
| int cmd_tag(int argc, const char **argv, const char *prefix) |
| { |
| struct strbuf buf = STRBUF_INIT; |
| unsigned char object[20], prev[20]; |
| char ref[PATH_MAX]; |
| const char *object_ref, *tag; |
| struct ref_lock *lock; |
| |
| int annotate = 0, sign = 0, force = 0, lines = -1, |
| list = 0, delete = 0, verify = 0; |
| const char *msgfile = NULL, *keyid = NULL; |
| struct msg_arg msg = { 0, STRBUF_INIT }; |
| struct commit_list *with_commit = NULL; |
| struct option options[] = { |
| OPT_BOOLEAN('l', NULL, &list, "list tag names"), |
| { OPTION_INTEGER, 'n', NULL, &lines, "n", |
| "print <n> lines of each tag message", |
| PARSE_OPT_OPTARG, NULL, 1 }, |
| OPT_BOOLEAN('d', NULL, &delete, "delete tags"), |
| OPT_BOOLEAN('v', NULL, &verify, "verify tags"), |
| |
| OPT_GROUP("Tag creation options"), |
| OPT_BOOLEAN('a', NULL, &annotate, |
| "annotated tag, needs a message"), |
| OPT_CALLBACK('m', NULL, &msg, "msg", |
| "message for the tag", parse_msg_arg), |
| OPT_FILENAME('F', NULL, &msgfile, "message in a file"), |
| OPT_BOOLEAN('s', NULL, &sign, "annotated and GPG-signed tag"), |
| OPT_STRING('u', NULL, &keyid, "key-id", |
| "use another key to sign the tag"), |
| OPT_BOOLEAN('f', "force", &force, "replace the tag if exists"), |
| |
| OPT_GROUP("Tag listing options"), |
| { |
| OPTION_CALLBACK, 0, "contains", &with_commit, "commit", |
| "print only tags that contain the commit", |
| PARSE_OPT_LASTARG_DEFAULT, |
| parse_opt_with_commit, (intptr_t)"HEAD", |
| }, |
| OPT_END() |
| }; |
| |
| git_config(git_tag_config, NULL); |
| |
| argc = parse_options(argc, argv, prefix, options, git_tag_usage, 0); |
| |
| if (keyid) { |
| sign = 1; |
| set_signingkey(keyid); |
| } |
| if (sign) |
| annotate = 1; |
| if (argc == 0 && !(delete || verify)) |
| list = 1; |
| |
| if ((annotate || msg.given || msgfile || force) && |
| (list || delete || verify)) |
| usage_with_options(git_tag_usage, options); |
| |
| if (list + delete + verify > 1) |
| usage_with_options(git_tag_usage, options); |
| if (list) |
| return list_tags(argv[0], lines == -1 ? 0 : lines, |
| with_commit); |
| if (lines != -1) |
| die("-n option is only allowed with -l."); |
| if (with_commit) |
| die("--contains option is only allowed with -l."); |
| if (delete) |
| return for_each_tag_name(argv, delete_tag); |
| if (verify) |
| return for_each_tag_name(argv, verify_tag); |
| |
| if (msg.given || msgfile) { |
| if (msg.given && msgfile) |
| die("only one -F or -m option is allowed."); |
| annotate = 1; |
| if (msg.given) |
| strbuf_addbuf(&buf, &(msg.buf)); |
| else { |
| if (!strcmp(msgfile, "-")) { |
| if (strbuf_read(&buf, 0, 1024) < 0) |
| die_errno("cannot read '%s'", msgfile); |
| } else { |
| if (strbuf_read_file(&buf, msgfile, 1024) < 0) |
| die_errno("could not open or read '%s'", |
| msgfile); |
| } |
| } |
| } |
| |
| tag = argv[0]; |
| |
| object_ref = argc == 2 ? argv[1] : "HEAD"; |
| if (argc > 2) |
| die("too many params"); |
| |
| if (get_sha1(object_ref, object)) |
| die("Failed to resolve '%s' as a valid ref.", object_ref); |
| |
| if (snprintf(ref, sizeof(ref), "refs/tags/%s", tag) > sizeof(ref) - 1) |
| die("tag name too long: %.*s...", 50, tag); |
| if (check_ref_format(ref)) |
| die("'%s' is not a valid tag name.", tag); |
| |
| if (!resolve_ref(ref, prev, 1, NULL)) |
| hashclr(prev); |
| else if (!force) |
| die("tag '%s' already exists", tag); |
| |
| if (annotate) |
| create_tag(object, tag, &buf, msg.given || msgfile, |
| sign, prev, object); |
| |
| lock = lock_any_ref_for_update(ref, prev, 0); |
| if (!lock) |
| die("%s: cannot lock the ref", ref); |
| if (write_ref_sha1(lock, object, NULL) < 0) |
| die("%s: cannot update the ref", ref); |
| if (force && hashcmp(prev, object)) |
| printf("Updated tag '%s' (was %s)\n", tag, find_unique_abbrev(prev, DEFAULT_ABBREV)); |
| |
| strbuf_release(&buf); |
| return 0; |
| } |
