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@xxxxxxxxx> --- Those were commented in the responses to my previous patch: http://article.gmane.org/gmane.comp.version-control.git/53138 I committed them on top of that my other patch already in "next". Unfortunately, I was not able to commit before the patches from Johannes supporting the EDITOR environment variable in builtin-tag.c and fixing its bug with a non-initialized buffer. builtin-tag.c | 38 ++++++++++++++++++++++---------------- t/t7004-tag.sh | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+), 16 deletions(-) diff --git a/builtin-tag.c b/builtin-tag.c index 507f510..9231d72 100644 --- a/builtin-tag.c +++ b/builtin-tag.c @@ -85,14 +85,19 @@ static int show_reference(const char *refname, const unsigned char *sha1, printf("%-15s ", refname); sp = buf = read_sha1_file(sha1, &type, &size); - if (!buf || !size) + if (!buf) return 0; + if (!size) { + free(buf); + return 0; + } /* skip header */ while (sp + 1 < buf + size && !(sp[0] == '\n' && sp[1] == '\n')) sp++; /* only take up to "lines" lines, and strip the signature */ - for (i = 0, sp += 2; i < filter->lines && sp < buf + size && + for (i = 0, sp += 2; + i < filter->lines && sp < buf + size && prefixcmp(sp, PGP_SIGNATURE "\n"); i++) { if (i) @@ -133,10 +138,10 @@ static int list_tags(const char *pattern, int lines) return 0; } -typedef int (*func_tag)(const char *name, const char *ref, +typedef int (*each_tag_name_fn)(const char *name, const char *ref, const unsigned char *sha1); -static int do_tag_names(const char **argv, func_tag fn) +static int for_each_tag_name(const char **argv, each_tag_name_fn fn) { const char **p; char ref[PATH_MAX]; @@ -191,7 +196,7 @@ static ssize_t do_sign(char *buffer, size_t size, size_t max) if (!*signingkey) { if (strlcpy(signingkey, git_committer_info(1), - sizeof(signingkey)) >= sizeof(signingkey)) + sizeof(signingkey)) > sizeof(signingkey) - 1) return error("committer info too long."); bracket = strchr(signingkey, '>'); if (bracket) @@ -254,7 +259,7 @@ static void create_tag(const unsigned char *object, const char *tag, unsigned long size; type = sha1_object_info(object, NULL); - if (type <= 0) + if (type <= OBJ_NONE) die("bad object type."); header_len = snprintf(header_buf, sizeof(header_buf), @@ -267,7 +272,7 @@ static void create_tag(const unsigned char *object, const char *tag, tag, git_committer_info(1)); - if (header_len >= sizeof(header_buf)) + if (header_len > sizeof(header_buf) - 1) die("tag header too big."); if (!message) { @@ -362,6 +367,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix) i++; if (i == argc) die("option -m needs an argument."); + if (message) + die("only one -F or -m option is allowed."); message = xstrdup(argv[i]); continue; } @@ -373,6 +380,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix) i++; if (i == argc) die("option -F needs an argument."); + if (message) + die("only one -F or -m option is allowed."); if (!strcmp(argv[i], "-")) fd = 0; @@ -401,15 +410,12 @@ int cmd_tag(int argc, const char **argv, const char *prefix) die("argument to option -u too long"); continue; } - if (!strcmp(arg, "-l")) { + if (!strcmp(arg, "-l")) return list_tags(argv[i + 1], lines); - } - if (!strcmp(arg, "-d")) { - return do_tag_names(argv + i + 1, delete_tag); - } - if (!strcmp(arg, "-v")) { - return do_tag_names(argv + i + 1, verify_tag); - } + if (!strcmp(arg, "-d")) + return for_each_tag_name(argv + i + 1, delete_tag); + if (!strcmp(arg, "-v")) + return for_each_tag_name(argv + i + 1, verify_tag); usage(builtin_tag_usage); } @@ -427,7 +433,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix) 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)) + 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); diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh index a0be164..c4fa446 100755 --- a/t/t7004-tag.sh +++ b/t/t7004-tag.sh @@ -332,6 +332,33 @@ test_expect_success 'creating an annotated tag with -F - should succeed' ' git diff expect actual ' +test_expect_success \ + 'trying to create a tag with a non-existing -F file should fail' ' + ! test -f nonexistingfile && + ! tag_exists notag && + ! git-tag -F nonexistingfile notag && + ! tag_exists notag +' + +test_expect_success \ + 'trying to create tags giving many -m or -F options should fail' ' + echo "message file 1" >msgfile1 && + echo "message file 2" >msgfile2 && + ! tag_exists msgtag && + ! git-tag -m "message 1" -m "message 2" msgtag && + ! tag_exists msgtag && + ! git-tag -F msgfile1 -F msgfile2 msgtag && + ! tag_exists msgtag && + ! git-tag -m "message 1" -F msgfile1 msgtag && + ! tag_exists msgtag && + ! git-tag -F msgfile1 -m "message 1" msgtag && + ! tag_exists msgtag && + ! git-tag -F msgfile1 -m "message 1" -F msgfile2 msgtag && + ! tag_exists msgtag && + ! git-tag -m "message 1" -F msgfile1 -m "message 2" msgtag && + ! tag_exists msgtag +' + # blank and empty messages: get_tag_header empty-annotated-tag $commit commit $time >expect @@ -648,6 +675,14 @@ test_expect_success 'creating a signed tag with -F - should succeed' ' git diff expect actual ' +test_expect_success \ + 'trying to create a signed tag with non-existing -F file should fail' ' + ! test -f nonexistingfile && + ! tag_exists nosigtag && + ! git-tag -s -F nonexistingfile nosigtag && + ! tag_exists nosigtag +' + test_expect_success 'verifying a signed tag should succeed' \ 'git-tag -v signed-tag' -- 1.5.0 - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
