diff options
| -rw-r--r-- | Documentation/RelNotes/1.7.9.txt | 4 | ||||
| -rw-r--r-- | Documentation/config.txt | 11 | ||||
| -rw-r--r-- | Documentation/git-tag.txt | 8 | ||||
| -rw-r--r-- | builtin/commit-tree.c | 25 | ||||
| -rw-r--r-- | builtin/commit.c | 14 | ||||
| -rw-r--r-- | builtin/merge.c | 14 | ||||
| -rw-r--r-- | commit.c | 118 | ||||
| -rw-r--r-- | commit.h | 10 | ||||
| -rw-r--r-- | gpg-interface.c | 16 | ||||
| -rw-r--r-- | log-tree.c | 129 | ||||
| -rw-r--r-- | notes-cache.c | 2 | ||||
| -rw-r--r-- | notes-merge.c | 2 | ||||
| -rw-r--r-- | pretty.c | 86 | ||||
| -rw-r--r-- | revision.c | 2 | ||||
| -rw-r--r-- | revision.h | 1 | ||||
| -rwxr-xr-x | t/t7510-signed-commit.sh | 80 |
16 files changed, 488 insertions, 34 deletions
diff --git a/Documentation/RelNotes/1.7.9.txt b/Documentation/RelNotes/1.7.9.txt index 9689efa..1c548d9 100644 --- a/Documentation/RelNotes/1.7.9.txt +++ b/Documentation/RelNotes/1.7.9.txt @@ -99,10 +99,6 @@ Unless otherwise noted, all the fixes since v1.7.8 in the maintenance releases are contained in this release (see release notes to them for details). - * gitweb did not correctly fall back to configured $fallback_encoding - that is not 'latin1'. - (merge b13e3ea jn/maint-gitweb-utf8-fix later to maint). - -- exec >/var/tmp/1 O=v1.7.8.2-301-g48de656 diff --git a/Documentation/config.txt b/Documentation/config.txt index 27c7689..04f5e19 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -1123,6 +1123,17 @@ grep.lineNumber:: grep.extendedRegexp:: If set to true, enable '--extended-regexp' option by default. +gpg.program:: + Use this custom program instead of "gpg" found on $PATH when + making or verifying a PGP signature. The program must support the + same command line interface as GPG, namely, to verify a detached + signature, "gpg --verify $file - <$signature" is run, and the + program is expected to signal a good signature by exiting with + code 0, and to generate an ascii-armored detached signature, the + standard input of "gpg -bsau $key" is fed with the contents to be + signed, and the program is expected to send the result to its + standard output. + gui.commitmsgwidth:: Defines how wide the commit message window is in the linkgit:git-gui[1]. "75" is the default. diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt index 622a019..53ff5f6 100644 --- a/Documentation/git-tag.txt +++ b/Documentation/git-tag.txt @@ -38,7 +38,9 @@ created (i.e. a lightweight tag). A GnuPG signed tag object will be created when `-s` or `-u <key-id>` is used. When `-u <key-id>` is not used, the committer identity for the current user is used to find the -GnuPG key for signing. +GnuPG key for signing. The configuration variable `gpg.program` +is used to specify custom GnuPG binary. + OPTIONS ------- @@ -48,11 +50,11 @@ OPTIONS -s:: --sign:: - Make a GPG-signed tag, using the default e-mail address's key + Make a GPG-signed tag, using the default e-mail address's key. -u <key-id>:: --local-user=<key-id>:: - Make a GPG-signed tag, using the given key + Make a GPG-signed tag, using the given key. -f:: --force:: diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c index 05353c3..164b655 100644 --- a/builtin/commit-tree.c +++ b/builtin/commit-tree.c @@ -8,8 +8,9 @@ #include "tree.h" #include "builtin.h" #include "utf8.h" +#include "gpg-interface.h" -static const char commit_tree_usage[] = "git commit-tree [(-p <sha1>)...] [-m <message>] [-F <file>] <sha1> <changelog"; +static const char commit_tree_usage[] = "git commit-tree [(-p <sha1>)...] [-S<signer>] [-m <message>] [-F <file>] <sha1> <changelog"; static void new_parent(struct commit *parent, struct commit_list **parents_p) { @@ -25,6 +26,14 @@ static void new_parent(struct commit *parent, struct commit_list **parents_p) commit_list_insert(parent, parents_p); } +static int commit_tree_config(const char *var, const char *value, void *cb) +{ + int status = git_gpg_config(var, value, NULL); + if (status) + return status; + return git_default_config(var, value, cb); +} + int cmd_commit_tree(int argc, const char **argv, const char *prefix) { int i, got_tree = 0; @@ -32,12 +41,16 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix) unsigned char tree_sha1[20]; unsigned char commit_sha1[20]; struct strbuf buffer = STRBUF_INIT; + const char *sign_commit = NULL; - git_config(git_default_config, NULL); + git_config(commit_tree_config, NULL); if (argc < 2 || !strcmp(argv[1], "-h")) usage(commit_tree_usage); + if (get_sha1(argv[1], tree_sha1)) + die("Not a valid object name %s", argv[1]); + for (i = 1; i < argc; i++) { const char *arg = argv[i]; if (!strcmp(arg, "-p")) { @@ -51,6 +64,11 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix) continue; } + if (!memcmp(arg, "-S", 2)) { + sign_commit = arg + 2; + continue; + } + if (!strcmp(arg, "-m")) { if (argc <= ++i) usage(commit_tree_usage); @@ -98,7 +116,8 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix) die_errno("git commit-tree: failed to read"); } - if (commit_tree(&buffer, tree_sha1, parents, commit_sha1, NULL)) { + if (commit_tree(&buffer, tree_sha1, parents, commit_sha1, + NULL, sign_commit)) { strbuf_release(&buffer); return 1; } diff --git a/builtin/commit.c b/builtin/commit.c index 5891e95..eba1377 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -26,6 +26,7 @@ #include "unpack-trees.h" #include "quote.h" #include "submodule.h" +#include "gpg-interface.h" static const char * const builtin_commit_usage[] = { "git commit [options] [--] <filepattern>...", @@ -86,6 +87,8 @@ static int edit_flag = -1; /* unspecified */ static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship; static int no_post_rewrite, allow_empty_message; static char *untracked_files_arg, *force_date, *ignore_submodule_arg; +static char *sign_commit; + /* * The default commit message cleanup mode will remove the lines * beginning with # (shell comments) and leading and trailing @@ -145,6 +148,8 @@ static struct option builtin_commit_options[] = { OPT_BOOL('e', "edit", &edit_flag, "force edit of commit"), OPT_STRING(0, "cleanup", &cleanup_arg, "default", "how to strip spaces and #comments from message"), OPT_BOOLEAN(0, "status", &include_status, "include status in commit message template"), + { OPTION_STRING, 'S', "gpg-sign", &sign_commit, "key id", + "GPG sign commit", PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, /* end commit message options */ OPT_GROUP("Commit contents options"), @@ -1325,6 +1330,7 @@ static void print_summary(const char *prefix, const unsigned char *sha1, static int git_commit_config(const char *k, const char *v, void *cb) { struct wt_status *s = cb; + int status; if (!strcmp(k, "commit.template")) return git_config_pathname(&template_file, k, v); @@ -1333,6 +1339,9 @@ static int git_commit_config(const char *k, const char *v, void *cb) return 0; } + status = git_gpg_config(k, v, NULL); + if (status) + return status; return git_status_config(k, v, s); } @@ -1486,14 +1495,15 @@ int cmd_commit(int argc, const char **argv, const char *prefix) } if (amend) { - extra = read_commit_extra_headers(current_head); + const char *exclude_gpgsig[2] = { "gpgsig", NULL }; + extra = read_commit_extra_headers(current_head, exclude_gpgsig); } else { struct commit_extra_header **tail = &extra; append_merge_tag_headers(parents, &tail); } if (commit_tree_extended(&sb, active_cache_tree->sha1, parents, sha1, - author_ident.buf, extra)) { + author_ident.buf, sign_commit, extra)) { rollback_index_files(); die(_("failed to write commit object")); } diff --git a/builtin/merge.c b/builtin/merge.c index 4b0ca65..3a45172 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -27,6 +27,7 @@ #include "resolve-undo.h" #include "remote.h" #include "fmt-merge-msg.h" +#include "gpg-interface.h" #define DEFAULT_TWOHEAD (1<<0) #define DEFAULT_OCTOPUS (1<<1) @@ -64,6 +65,7 @@ static int allow_rerere_auto; static int abort_current_merge; static int show_progress = -1; static int default_to_upstream; +static const char *sign_commit; static struct strategy all_strategy[] = { { "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL }, @@ -209,6 +211,8 @@ static struct option builtin_merge_options[] = { OPT_BOOLEAN(0, "abort", &abort_current_merge, "abort the current in-progress merge"), OPT_SET_INT(0, "progress", &show_progress, "force progress reporting", 1), + { OPTION_STRING, 'S', "gpg-sign", &sign_commit, "key id", + "GPG sign commit", PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, OPT_BOOLEAN(0, "overwrite-ignore", &overwrite_ignore, "update ignored files (default)"), OPT_END() }; @@ -571,9 +575,13 @@ static int git_merge_config(const char *k, const char *v, void *cb) default_to_upstream = git_config_bool(k, v); return 0; } + status = fmt_merge_msg_config(k, v, cb); if (status) return status; + status = git_gpg_config(k, v, NULL); + if (status) + return status; return git_diff_ui_config(k, v, cb); } @@ -910,7 +918,8 @@ static int merge_trivial(struct commit *head) parent->next->item = remoteheads->item; parent->next->next = NULL; prepare_to_commit(); - if (commit_tree(&merge_msg, result_tree, parent, result_commit, NULL)) + if (commit_tree(&merge_msg, result_tree, parent, result_commit, NULL, + sign_commit)) die(_("failed to write commit object")); finish(head, result_commit, "In-index merge"); drop_save(); @@ -942,7 +951,8 @@ static int finish_automerge(struct commit *head, strbuf_addch(&merge_msg, '\n'); prepare_to_commit(); free_commit_list(remoteheads); - if (commit_tree(&merge_msg, result_tree, parents, result_commit, NULL)) + if (commit_tree(&merge_msg, result_tree, parents, result_commit, + NULL, sign_commit)) die(_("failed to write commit object")); strbuf_addf(&buf, "Merge made by the '%s' strategy.", wt_strategy); finish(head, result_commit, buf.buf); @@ -6,6 +6,7 @@ #include "diff.h" #include "revision.h" #include "notes.h" +#include "gpg-interface.h" int save_commit_buffer = 1; @@ -840,6 +841,86 @@ struct commit_list *reduce_heads(struct commit_list *heads) return result; } +static const char gpg_sig_header[] = "gpgsig"; +static const int gpg_sig_header_len = sizeof(gpg_sig_header) - 1; + +static int do_sign_commit(struct strbuf *buf, const char *keyid) +{ + struct strbuf sig = STRBUF_INIT; + int inspos, copypos; + + /* find the end of the header */ + inspos = strstr(buf->buf, "\n\n") - buf->buf + 1; + + if (!keyid || !*keyid) + keyid = get_signing_key(); + if (sign_buffer(buf, &sig, keyid)) { + strbuf_release(&sig); + return -1; + } + + for (copypos = 0; sig.buf[copypos]; ) { + const char *bol = sig.buf + copypos; + const char *eol = strchrnul(bol, '\n'); + int len = (eol - bol) + !!*eol; + + if (!copypos) { + strbuf_insert(buf, inspos, gpg_sig_header, gpg_sig_header_len); + inspos += gpg_sig_header_len; + } + strbuf_insert(buf, inspos++, " ", 1); + strbuf_insert(buf, inspos, bol, len); + inspos += len; + copypos += len; + } + strbuf_release(&sig); + return 0; +} + +int parse_signed_commit(const unsigned char *sha1, + struct strbuf *payload, struct strbuf *signature) +{ + unsigned long size; + enum object_type type; + char *buffer = read_sha1_file(sha1, &type, &size); + int in_signature, saw_signature = -1; + char *line, *tail; + + if (!buffer || type != OBJ_COMMIT) + goto cleanup; + + line = buffer; + tail = buffer + size; + in_signature = 0; + saw_signature = 0; + while (line < tail) { + const char *sig = NULL; + char *next = memchr(line, '\n', tail - line); + + next = next ? next + 1 : tail; + if (in_signature && line[0] == ' ') + sig = line + 1; + else if (!prefixcmp(line, gpg_sig_header) && + line[gpg_sig_header_len] == ' ') + sig = line + gpg_sig_header_len + 1; + if (sig) { + strbuf_add(signature, sig, next - sig); + saw_signature = 1; + in_signature = 1; + } else { + if (*line == '\n') + /* dump the whole remainder of the buffer */ + next = tail; + strbuf_add(payload, line, next - line); + in_signature = 0; + } + line = next; + } + cleanup: + free(buffer); + return saw_signature; +} + static void handle_signed_tag(struct commit *parent, struct commit_extra_header ***tail) { struct merge_remote_desc *desc; @@ -900,14 +981,15 @@ static void add_extra_header(struct strbuf *buffer, strbuf_addch(buffer, '\n'); } -struct commit_extra_header *read_commit_extra_headers(struct commit *commit) +struct commit_extra_header *read_commit_extra_headers(struct commit *commit, + const char **exclude) { struct commit_extra_header *extra = NULL; unsigned long size; enum object_type type; char *buffer = read_sha1_file(commit->object.sha1, &type, &size); if (buffer && type == OBJ_COMMIT) - extra = read_commit_extra_header_lines(buffer, size); + extra = read_commit_extra_header_lines(buffer, size, exclude); free(buffer); return extra; } @@ -921,7 +1003,23 @@ static inline int standard_header_field(const char *field, size_t len) (len == 8 && !memcmp(field, "encoding ", 9))); } -struct commit_extra_header *read_commit_extra_header_lines(const char *buffer, size_t size) +static int excluded_header_field(const char *field, size_t len, const char **exclude) +{ + if (!exclude) + return 0; + + while (*exclude) { + size_t xlen = strlen(*exclude); + if (len == xlen && + !memcmp(field, *exclude, xlen) && field[xlen] == ' ') + return 1; + exclude++; + } + return 0; +} + +struct commit_extra_header *read_commit_extra_header_lines(const char *buffer, size_t size, + const char **exclude) { struct commit_extra_header *extra = NULL, **tail = &extra, *it = NULL; const char *line, *next, *eof, *eob; @@ -947,7 +1045,8 @@ struct commit_extra_header *read_commit_extra_header_lines(const char *buffer, s if (next <= eof) eof = next; - if (standard_header_field(line, eof - line)) + if (standard_header_field(line, eof - line) || + excluded_header_field(line, eof - line, exclude)) continue; it = xcalloc(1, sizeof(*it)); @@ -975,13 +1074,14 @@ void free_commit_extra_headers(struct commit_extra_header *extra) int commit_tree(const struct strbuf *msg, unsigned char *tree, struct commit_list *parents, unsigned char *ret, - const char *author) + const char *author, const char *sign_commit) { struct commit_extra_header *extra = NULL, **tail = &extra; int result; append_merge_tag_headers(parents, &tail); - result = commit_tree_extended(msg, tree, parents, ret, author, extra); + result = commit_tree_extended(msg, tree, parents, ret, + author, sign_commit, extra); free_commit_extra_headers(extra); return result; } @@ -993,7 +1093,8 @@ static const char commit_utf8_warn[] = int commit_tree_extended(const struct strbuf *msg, unsigned char *tree, struct commit_list *parents, unsigned char *ret, - const char *author, struct commit_extra_header *extra) + const char *author, const char *sign_commit, + struct commit_extra_header *extra) { int result; int encoding_is_utf8; @@ -1046,6 +1147,9 @@ int commit_tree_extended(const struct strbuf *msg, unsigned char *tree, if (encoding_is_utf8 && !is_utf8(buffer.buf)) fprintf(stderr, commit_utf8_warn); + if (sign_commit && do_sign_commit(&buffer, sign_commit)) + return -1; + result = write_sha1_file(buffer.buf, buffer.len, commit_type, ret); strbuf_release(&buffer); return result; @@ -193,15 +193,15 @@ extern void append_merge_tag_headers(struct commit_list *parents, extern int commit_tree(const struct strbuf *msg, unsigned char *tree, struct commit_list *parents, unsigned char *ret, - const char *author); + const char *author, const char *sign_commit); extern int commit_tree_extended(const struct strbuf *msg, unsigned char *tree, struct commit_list *parents, unsigned char *ret, - const char *author, + const char *author, const char *sign_commit, struct commit_extra_header *); -extern struct commit_extra_header *read_commit_extra_headers(struct commit *); -extern struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len); +extern struct commit_extra_header *read_commit_extra_headers(struct commit *, const char **); +extern struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **); extern void free_commit_extra_headers(struct commit_extra_header *extra); @@ -218,4 +218,6 @@ struct merge_remote_desc { */ struct commit *get_merge_parent(const char *name); +extern int parse_signed_commit(const unsigned char *sha1, + struct strbuf *message, struct strbuf *signature); #endif /* COMMIT_H */ diff --git a/gpg-interface.c b/gpg-interface.c index ff232c8..09ab64a 100644 --- a/gpg-interface.c +++ b/gpg-interface.c @@ -5,6 +5,7 @@ #include "sigchain.h" static char *configured_signing_key; +static const char *gpg_program = "gpg"; void set_signing_key(const char *key) { @@ -15,9 +16,12 @@ void set_signing_key(const char *key) int git_gpg_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "user.signingkey")) { + set_signing_key(value); + } + if (!strcmp(var, "gpg.program")) { if (!value) return config_error_nonbool(var); - set_signing_key(value); + gpg_program = xstrdup(value); } return 0; } @@ -46,7 +50,7 @@ int sign_buffer(struct strbuf *buffer, struct strbuf *signature, const char *sig gpg.argv = args; gpg.in = -1; gpg.out = -1; - args[0] = "gpg"; + args[0] = gpg_program; args[1] = "-bsau"; args[2] = signing_key; args[3] = NULL; @@ -91,20 +95,18 @@ int sign_buffer(struct strbuf *buffer, struct strbuf *signature, const char *sig /* * Run "gpg" to see if the payload matches the detached signature. - * gpg_output_to tells where the output from "gpg" should go: - * < 0: /dev/null - * = 0: standard error of the calling process - * > 0: the specified file descriptor + * gpg_output, when set, receives the diagnostic output from GPG. */ int verify_signed_buffer(const char *payload, size_t payload_size, const char *signature, size_t signature_size, struct strbuf *gpg_output) { struct child_process gpg; - const char *args_gpg[] = {"gpg", "--verify", "FILE", "-", NULL}; + const char *args_gpg[] = {NULL, "--verify", "FILE", "-", NULL}; char path[PATH_MAX]; int fd, ret; + args_gpg[0] = gpg_program; fd = git_mkstemp(path, PATH_MAX, ".git_vtag_tmpXXXXXX"); if (fd < 0) return error("could not create temporary file '%s': %s", @@ -8,6 +8,7 @@ #include "refs.h" #include "string-list.h" #include "color.h" +#include "gpg-interface.h" struct decoration name_decoration = { "object names" }; @@ -403,6 +404,129 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit, *extra_headers_p = extra_headers; } +static void show_sig_lines(struct rev_info *opt, int status, const char *bol) +{ + const char *color, *reset, *eol; + + color = diff_get_color_opt(&opt->diffopt, + status ? DIFF_WHITESPACE : DIFF_FRAGINFO); + reset = diff_get_color_opt(&opt->diffopt, DIFF_RESET); + while (*bol) { + eol = strchrnul(bol, '\n'); + printf("%s%.*s%s%s", color, (int)(eol - bol), bol, reset, + *eol ? "\n" : ""); + bol = (*eol) ? (eol + 1) : eol; + } +} + +static void show_signature(struct rev_info *opt, struct commit *commit) +{ + struct strbuf payload = STRBUF_INIT; + struct strbuf signature = STRBUF_INIT; + struct strbuf gpg_output = STRBUF_INIT; + int status; + + if (parse_signed_commit(commit->object.sha1, &payload, &signature) <= 0) + goto out; + + status = verify_signed_buffer(payload.buf, payload.len, + signature.buf, signature.len, + &gpg_output); + if (status && !gpg_output.len) + strbuf_addstr(&gpg_output, "No signature\n"); + + show_sig_lines(opt, status, gpg_output.buf); + + out: + strbuf_release(&gpg_output); + strbuf_release(&payload); + strbuf_release(&signature); +} + +static int which_parent(const unsigned char *sha1, const struct commit *commit) +{ + int nth; + const struct commit_list *parent; + + for (nth = 0, parent = commit->parents; parent; parent = parent->next) { + if (!hashcmp(parent->item->object.sha1, sha1)) + return nth; + nth++; + } + return -1; +} + +static int is_common_merge(const struct commit *commit) +{ + return (commit->parents + && commit->parents->next + && !commit->parents->next->next); +} + +static void show_one_mergetag(struct rev_info *opt, + struct commit_extra_header *extra, + struct commit *commit) +{ + unsigned char sha1[20]; + struct tag *tag; + struct strbuf verify_message; + int status, nth; + size_t payload_size, gpg_message_offset; + + hash_sha1_file(extra->value, extra->len, typename(OBJ_TAG), sha1); + tag = lookup_tag(sha1); + if (!tag) + return; /* error message already given */ + + strbuf_init(&verify_message, 256); + if (parse_tag_buffer(tag, extra->value, extra->len)) + strbuf_addstr(&verify_message, "malformed mergetag\n"); + else if (is_common_merge(commit) && + !hashcmp(tag->tagged->sha1, + commit->parents->next->item->object.sha1)) + strbuf_addf(&verify_message, + "merged tag '%s'\n", tag->tag); + else if ((nth = which_parent(tag->tagged->sha1, commit)) < 0) + strbuf_addf(&verify_message, "tag %s names a non-parent %s\n", + tag->tag, tag->tagged->sha1); + else + strbuf_addf(&verify_message, + "parent #%d, tagged '%s'\n", nth + 1, tag->tag); + gpg_message_offset = verify_message.len; + + payload_size = parse_signature(extra->value, extra->len); + if ((extra->len <= payload_size) || + (verify_signed_buffer(extra->value, payload_size, + extra->value + payload_size, + extra->len - payload_size, + &verify_message) && + verify_message.len <= gpg_message_offset)) { + strbuf_addstr(&verify_message, "No signature\n"); + status = -1; + } + else if (strstr(verify_message.buf + gpg_message_offset, + ": Good signature from ")) + status = 0; + else + status = -1; + + show_sig_lines(opt, status, verify_message.buf); + strbuf_release(&verify_message); +} + +static void show_mergetag(struct rev_info *opt, struct commit *commit) +{ + struct commit_extra_header *extra, *to_free; + + to_free = read_commit_extra_headers(commit, NULL); + for (extra = to_free; extra; extra = extra->next) { + if (strcmp(extra->key, "mergetag")) + continue; /* not a merge tag */ + show_one_mergetag(opt, extra, commit); + } + free_commit_extra_headers(to_free); +} + void show_log(struct rev_info *opt) { struct strbuf msgbuf = STRBUF_INIT; @@ -514,6 +638,11 @@ void show_log(struct rev_info *opt) } } + if (opt->show_signature) { + show_signature(opt, commit); + show_mergetag(opt, commit); + } + if (!commit->buffer) return; diff --git a/notes-cache.c b/notes-cache.c index bea013e..eabe4a0 100644 --- a/notes-cache.c +++ b/notes-cache.c @@ -59,7 +59,7 @@ int notes_cache_write(struct notes_cache *c) return -1; strbuf_attach(&msg, c->validity, strlen(c->validity), strlen(c->validity) + 1); - if (commit_tree(&msg, tree_sha1, NULL, commit_sha1, NULL) < 0) + if (commit_tree(&msg, tree_sha1, NULL, commit_sha1, NULL, NULL) < 0) return -1; if (update_ref("update notes cache", c->tree.ref, commit_sha1, NULL, 0, QUIET_ON_ERR) < 0) diff --git a/notes-merge.c b/notes-merge.c index 0d38a1b..fb0832f 100644 --- a/notes-merge.c +++ b/notes-merge.c @@ -551,7 +551,7 @@ void create_notes_commit(struct notes_tree *t, struct commit_list *parents, /* else: t->ref points to nothing, assume root/orphan commit */ } - if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL)) + if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL, NULL)) die("Failed to commit notes tree to database"); } @@ -9,6 +9,7 @@ #include "notes.h" #include "color.h" #include "reflog-walk.h" +#include "gpg-interface.h" static char *user_format; static struct cmt_fmt_map { @@ -640,6 +641,12 @@ struct format_commit_context { const struct pretty_print_context *pretty_ctx; unsigned commit_header_parsed:1; unsigned commit_message_parsed:1; + unsigned commit_signature_parsed:1; + struct { + char *gpg_output; + char good_bad; + char *signer; + } signature; char *message; size_t width, indent1, indent2; @@ -822,6 +829,59 @@ static void rewrap_message_tail(struct strbuf *sb, c->indent2 = new_indent2; } +static struct { + char result; + const char *check; +} signature_check[] = { + { 'G', ": Good signature from " }, + { 'B', ": BAD signature from " }, +}; + +static void parse_signature_lines(struct format_commit_context *ctx) +{ + const char *buf = ctx->signature.gpg_output; + int i; + + for (i = 0; i < ARRAY_SIZE(signature_check); i++) { + const char *found = strstr(buf, signature_check[i].check); + const char *next; + if (!found) + continue; + ctx->signature.good_bad = signature_check[i].result; + found += strlen(signature_check[i].check); + next = strchrnul(found, '\n'); + ctx->signature.signer = xmemdupz(found, next - found); + break; + } +} + +static void parse_commit_signature(struct format_commit_context *ctx) +{ + struct strbuf payload = STRBUF_INIT; + struct strbuf signature = STRBUF_INIT; + struct strbuf gpg_output = STRBUF_INIT; + int status; + + ctx->commit_signature_parsed = 1; + + if (parse_signed_commit(ctx->commit->object.sha1, + &payload, &signature) <= 0) + goto out; + status = verify_signed_buffer(payload.buf, payload.len, + signature.buf, signature.len, + &gpg_output); + if (status && !gpg_output.len) + goto out; + ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL); + parse_signature_lines(ctx); + + out: + strbuf_release(&gpg_output); + strbuf_release(&payload); + strbuf_release(&signature); +} + + static int format_reflog_person(struct strbuf *sb, char part, struct reflog_walk_info *log, @@ -999,6 +1059,30 @@ static size_t format_commit_one(struct strbuf *sb, const char *placeholder, return 0; } + if (placeholder[0] == 'G') { + if (!c->commit_signature_parsed) + parse_commit_signature(c); + switch (placeholder[1]) { + case 'G': + if (c->signature.gpg_output) + strbuf_addstr(sb, c->signature.gpg_output); + break; + case '?': + switch (c->signature.good_bad) { + case 'G': + case 'B': + strbuf_addch(sb, c->signature.good_bad); + } + break; + case 'S': + if (c->signature.signer) + strbuf_addstr(sb, c->signature.signer); + break; + } + return 2; + } + + /* For the rest we have to parse the commit header. */ if (!c->commit_header_parsed) parse_commit_header(c); @@ -1141,6 +1225,8 @@ void format_commit_message(const struct commit *commit, if (context.message != commit->buffer) free(context.message); + free(context.signature.gpg_output); + free(context.signature.signer); } static void pp_header(const struct pretty_print_context *pp, @@ -1469,6 +1469,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg revs->show_notes = 1; revs->show_notes_given = 1; revs->notes_opt.use_default_notes = 1; + } else if (!strcmp(arg, "--show-signature")) { + revs->show_signature = 1; } else if (!prefixcmp(arg, "--show-notes=") || !prefixcmp(arg, "--notes=")) { struct strbuf buf = STRBUF_INIT; @@ -110,6 +110,7 @@ struct rev_info { show_merge:1, show_notes:1, show_notes_given:1, + show_signature:1, pretty_given:1, abbrev_commit:1, abbrev_commit_given:1, diff --git a/t/t7510-signed-commit.sh b/t/t7510-signed-commit.sh new file mode 100755 index 0000000..1d3c56f --- /dev/null +++ b/t/t7510-signed-commit.sh @@ -0,0 +1,80 @@ +#!/bin/sh + +test_description='signed commit tests' +. ./test-lib.sh +. "$TEST_DIRECTORY/lib-gpg.sh" + +test_expect_success GPG 'create signed commits' ' + echo 1 >file && git add file && + test_tick && git commit -S -m initial && + git tag initial && + git branch side && + + echo 2 >file && test_tick && git commit -a -S -m second && + git tag second && + + git checkout side && + echo 3 >elif && git add elif && + test_tick && git commit -m "third on side" && + + git checkout master && + test_tick && git merge -S side && + git tag merge && + + echo 4 >file && test_tick && git commit -a -m "fourth unsigned" && + git tag fourth-unsigned && + + test_tick && git commit --amend -S -m "fourth signed" && + git tag fourth-signed +' + +test_expect_success GPG 'show signatures' ' + ( + for commit in initial second merge master + do + git show --pretty=short --show-signature $commit >actual && + grep "Good signature from" actual || exit 1 + ! grep "BAD signature from" actual || exit 1 + echo $commit OK + done + ) && + ( + for commit in merge^2 fourth-unsigned + do + git show --pretty=short --show-signature $commit >actual && + grep "Good signature from" actual && exit 1 + ! grep "BAD signature from" actual || exit 1 + echo $commit OK + done + ) +' + +test_expect_success GPG 'detect fudged signature' ' + git cat-file commit master >raw && + + sed -e "s/fourth signed/4th forged/" raw >forged1 && + git hash-object -w -t commit forged1 >forged1.commit && + git show --pretty=short --show-signature $(cat forged1.commit) >actual1 && + grep "BAD signature from" actual1 && + ! grep "Good signature from" actual1 +' + +test_expect_success GPG 'detect fudged signature with NUL' ' + git cat-file commit master >raw && + cat raw >forged2 && + echo Qwik | tr "Q" "\000" >>forged2 && + git hash-object -w -t commit forged2 >forged2.commit && + git show --pretty=short --show-signature $(cat forged2.commit) >actual2 && + grep "BAD signature from" actual2 && + ! grep "Good signature from" actual2 +' + +test_expect_success GPG 'amending already signed commit' ' + git checkout fourth-signed^0 && + git commit --amend -S --no-edit && + git show -s --show-signature HEAD >actual && + grep "Good signature from" actual && + ! grep "BAD signature from" actual +' + +test_done |