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builtin-tag.c: Fix two memory leaks and minor notation changes.
A repeated call to read_sha1_file was not freing memory when the buffer was allocated but returned size was zero. Also, now the program does not allow many -F or -m options, which was a bug too because it was not freing the memory allocated for any previous -F or -m options. Tests are provided for ensuring that only one option -F or -m is given. Also, another test is shipped here, to check that "git tag" fails when a non-existing file is passed to the -F option, something that git-tag.sh allowed creating the tag with an empty message. Signed-off-by: Carlos Rica <jasampler@gmail.com> Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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4d87b9c5db
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@ -89,14 +89,19 @@ static int show_reference(const char *refname, const unsigned char *sha1,
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printf("%-15s ", refname);
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sp = buf = read_sha1_file(sha1, &type, &size);
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if (!buf || !size)
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if (!buf)
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return 0;
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if (!size) {
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free(buf);
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return 0;
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}
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/* skip header */
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while (sp + 1 < buf + size &&
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!(sp[0] == '\n' && sp[1] == '\n'))
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sp++;
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/* only take up to "lines" lines, and strip the signature */
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for (i = 0, sp += 2; i < filter->lines && sp < buf + size &&
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for (i = 0, sp += 2;
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i < filter->lines && sp < buf + size &&
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prefixcmp(sp, PGP_SIGNATURE "\n");
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i++) {
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if (i)
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@ -137,10 +142,10 @@ static int list_tags(const char *pattern, int lines)
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return 0;
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}
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typedef int (*func_tag)(const char *name, const char *ref,
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typedef int (*each_tag_name_fn)(const char *name, const char *ref,
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const unsigned char *sha1);
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static int do_tag_names(const char **argv, func_tag fn)
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static int for_each_tag_name(const char **argv, each_tag_name_fn fn)
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{
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const char **p;
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char ref[PATH_MAX];
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@ -195,7 +200,7 @@ static ssize_t do_sign(char *buffer, size_t size, size_t max)
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if (!*signingkey) {
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if (strlcpy(signingkey, git_committer_info(1),
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sizeof(signingkey)) >= sizeof(signingkey))
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sizeof(signingkey)) > sizeof(signingkey) - 1)
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return error("committer info too long.");
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bracket = strchr(signingkey, '>');
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if (bracket)
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@ -258,7 +263,7 @@ static void create_tag(const unsigned char *object, const char *tag,
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unsigned long size = 0;
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type = sha1_object_info(object, NULL);
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if (type <= 0)
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if (type <= OBJ_NONE)
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die("bad object type.");
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header_len = snprintf(header_buf, sizeof(header_buf),
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@ -271,7 +276,7 @@ static void create_tag(const unsigned char *object, const char *tag,
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tag,
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git_committer_info(1));
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if (header_len >= sizeof(header_buf))
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if (header_len > sizeof(header_buf) - 1)
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die("tag header too big.");
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if (!message) {
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@ -366,6 +371,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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i++;
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if (i == argc)
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die("option -m needs an argument.");
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if (message)
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die("only one -F or -m option is allowed.");
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message = xstrdup(argv[i]);
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continue;
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}
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@ -377,6 +384,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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i++;
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if (i == argc)
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die("option -F needs an argument.");
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if (message)
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die("only one -F or -m option is allowed.");
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if (!strcmp(argv[i], "-"))
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fd = 0;
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@ -405,15 +414,12 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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die("argument to option -u too long");
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continue;
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}
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if (!strcmp(arg, "-l")) {
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if (!strcmp(arg, "-l"))
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return list_tags(argv[i + 1], lines);
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}
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if (!strcmp(arg, "-d")) {
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return do_tag_names(argv + i + 1, delete_tag);
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}
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if (!strcmp(arg, "-v")) {
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return do_tag_names(argv + i + 1, verify_tag);
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}
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if (!strcmp(arg, "-d"))
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return for_each_tag_name(argv + i + 1, delete_tag);
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if (!strcmp(arg, "-v"))
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return for_each_tag_name(argv + i + 1, verify_tag);
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usage(builtin_tag_usage);
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}
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@ -431,7 +437,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
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if (get_sha1(object_ref, object))
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die("Failed to resolve '%s' as a valid ref.", object_ref);
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if (snprintf(ref, sizeof(ref), "refs/tags/%s", tag) >= sizeof(ref))
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if (snprintf(ref, sizeof(ref), "refs/tags/%s", tag) > sizeof(ref) - 1)
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die("tag name too long: %.*s...", 50, tag);
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if (check_ref_format(ref))
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die("'%s' is not a valid tag name.", tag);
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@ -332,6 +332,33 @@ test_expect_success 'creating an annotated tag with -F - should succeed' '
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git diff expect actual
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'
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test_expect_success \
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'trying to create a tag with a non-existing -F file should fail' '
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! test -f nonexistingfile &&
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! tag_exists notag &&
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! git-tag -F nonexistingfile notag &&
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! tag_exists notag
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'
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test_expect_success \
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'trying to create tags giving many -m or -F options should fail' '
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echo "message file 1" >msgfile1 &&
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echo "message file 2" >msgfile2 &&
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! tag_exists msgtag &&
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! git-tag -m "message 1" -m "message 2" msgtag &&
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! tag_exists msgtag &&
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! git-tag -F msgfile1 -F msgfile2 msgtag &&
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! tag_exists msgtag &&
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! git-tag -m "message 1" -F msgfile1 msgtag &&
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! tag_exists msgtag &&
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! git-tag -F msgfile1 -m "message 1" msgtag &&
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! tag_exists msgtag &&
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! git-tag -F msgfile1 -m "message 1" -F msgfile2 msgtag &&
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! tag_exists msgtag &&
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! git-tag -m "message 1" -F msgfile1 -m "message 2" msgtag &&
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! tag_exists msgtag
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'
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# blank and empty messages:
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get_tag_header empty-annotated-tag $commit commit $time >expect
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@ -648,6 +675,14 @@ test_expect_success 'creating a signed tag with -F - should succeed' '
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git diff expect actual
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'
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test_expect_success \
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'trying to create a signed tag with non-existing -F file should fail' '
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! test -f nonexistingfile &&
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! tag_exists nosigtag &&
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! git-tag -s -F nonexistingfile nosigtag &&
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! tag_exists nosigtag
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'
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test_expect_success 'verifying a signed tag should succeed' \
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'git-tag -v signed-tag'
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