зеркало из https://github.com/microsoft/git.git
Move commit GPG signature verification to commit.c
Signed-off-by: Sebastian Götte <jaseg@physik-pool.tu-berlin.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Sebastian Götte
Junio C Hamano
Родитель
8617715cc0
Коммит
ffb6d7d5c9
59
commit.c
59
commit.c
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@ -1041,6 +1041,65 @@ free_return:
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free(buf);
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}
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static struct {
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char result;
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const char *check;
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} sigcheck_gpg_status[] = {
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{ 'G', "\n[GNUPG:] GOODSIG " },
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{ 'B', "\n[GNUPG:] BADSIG " },
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};
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static void parse_gpg_output(struct signature_check *sigc)
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{
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const char *buf = sigc->gpg_status;
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int i;
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for (i = 0; i < ARRAY_SIZE(sigcheck_gpg_status); i++) {
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const char *found = strstr(buf, sigcheck_gpg_status[i].check);
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const char *next;
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if (!found)
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continue;
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sigc->result = sigcheck_gpg_status[i].result;
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found += strlen(sigcheck_gpg_status[i].check);
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sigc->key = xmemdupz(found, 16);
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found += 17;
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next = strchrnul(found, '\n');
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sigc->signer = xmemdupz(found, next - found);
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break;
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}
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}
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void check_commit_signature(const struct commit* commit, struct signature_check *sigc)
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{
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struct strbuf payload = STRBUF_INIT;
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struct strbuf signature = STRBUF_INIT;
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struct strbuf gpg_output = STRBUF_INIT;
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struct strbuf gpg_status = STRBUF_INIT;
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int status;
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sigc->result = 'N';
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if (parse_signed_commit(commit->object.sha1,
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&payload, &signature) <= 0)
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goto out;
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status = verify_signed_buffer(payload.buf, payload.len,
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signature.buf, signature.len,
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&gpg_output, &gpg_status);
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if (status && !gpg_output.len)
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goto out;
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sigc->gpg_output = strbuf_detach(&gpg_output, NULL);
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sigc->gpg_status = strbuf_detach(&gpg_status, NULL);
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parse_gpg_output(sigc);
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out:
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strbuf_release(&gpg_status);
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strbuf_release(&gpg_output);
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strbuf_release(&payload);
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strbuf_release(&signature);
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}
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void append_merge_tag_headers(struct commit_list *parents,
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struct commit_extra_header ***tail)
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{
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10
commit.h
10
commit.h
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@ -5,6 +5,7 @@
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#include "tree.h"
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#include "strbuf.h"
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#include "decorate.h"
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#include "gpg-interface.h"
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struct commit_list {
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struct commit *item;
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@ -232,4 +233,13 @@ extern void print_commit_list(struct commit_list *list,
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const char *format_cur,
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const char *format_last);
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/*
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* Check the signature of the given commit. The result of the check is stored in
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* sig->result, 'G' for a good signature, 'B' for a bad signature and 'N'
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* for no signature at all.
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* This may allocate memory for sig->gpg_output, sig->gpg_status, sig->signer
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* and sig->key.
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*/
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extern void check_commit_signature(const struct commit* commit, struct signature_check *sigc);
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#endif /* COMMIT_H */
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@ -1,6 +1,17 @@
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#ifndef GPG_INTERFACE_H
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#define GPG_INTERFACE_H
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struct signature_check {
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char *gpg_output;
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char *gpg_status;
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char result; /* 0 (not checked),
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* N (checked but no further result),
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* G (good)
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* B (bad) */
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char *signer;
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char *key;
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};
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extern int sign_buffer(struct strbuf *buffer, struct strbuf *signature, const char *signing_key);
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extern int verify_signed_buffer(const char *payload, size_t payload_size, const char *signature, size_t signature_size, struct strbuf *gpg_output, struct strbuf *gpg_status);
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extern int git_gpg_config(const char *, const char *, void *);
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91
pretty.c
91
pretty.c
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@ -766,14 +766,7 @@ struct format_commit_context {
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const struct pretty_print_context *pretty_ctx;
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unsigned commit_header_parsed:1;
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unsigned commit_message_parsed:1;
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unsigned commit_signature_parsed:1;
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struct {
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char *gpg_output;
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char *gpg_status;
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char good_bad;
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char *signer;
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char *key;
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} signature;
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struct signature_check signature_check;
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char *message;
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size_t width, indent1, indent2;
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@ -956,64 +949,6 @@ static void rewrap_message_tail(struct strbuf *sb,
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c->indent2 = new_indent2;
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}
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static struct {
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char result;
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const char *check;
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} signature_check[] = {
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{ 'G', "\n[GNUPG:] GOODSIG " },
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{ 'B', "\n[GNUPG:] BADSIG " },
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};
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static void parse_signature_lines(struct format_commit_context *ctx)
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{
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const char *buf = ctx->signature.gpg_status;
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int i;
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for (i = 0; i < ARRAY_SIZE(signature_check); i++) {
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const char *found = strstr(buf, signature_check[i].check);
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const char *next;
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if (!found)
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continue;
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ctx->signature.good_bad = signature_check[i].result;
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found += strlen(signature_check[i].check);
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ctx->signature.key = xmemdupz(found, 16);
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found += 17;
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next = strchrnul(found, '\n');
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ctx->signature.signer = xmemdupz(found, next - found);
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break;
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}
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}
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static void parse_commit_signature(struct format_commit_context *ctx)
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{
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struct strbuf payload = STRBUF_INIT;
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struct strbuf signature = STRBUF_INIT;
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struct strbuf gpg_output = STRBUF_INIT;
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struct strbuf gpg_status = STRBUF_INIT;
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int status;
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ctx->commit_signature_parsed = 1;
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if (parse_signed_commit(ctx->commit->object.sha1,
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&payload, &signature) <= 0)
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goto out;
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status = verify_signed_buffer(payload.buf, payload.len,
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signature.buf, signature.len,
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&gpg_output, &gpg_status);
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if (status && !gpg_output.len)
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goto out;
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ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL);
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ctx->signature.gpg_status = strbuf_detach(&gpg_status, NULL);
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parse_signature_lines(ctx);
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out:
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strbuf_release(&gpg_status);
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strbuf_release(&gpg_output);
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strbuf_release(&payload);
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strbuf_release(&signature);
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}
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static int format_reflog_person(struct strbuf *sb,
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char part,
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struct reflog_walk_info *log,
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@ -1199,27 +1134,27 @@ static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
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}
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if (placeholder[0] == 'G') {
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if (!c->commit_signature_parsed)
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parse_commit_signature(c);
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if (!c->signature_check.result)
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check_commit_signature(c->commit, &(c->signature_check));
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switch (placeholder[1]) {
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case 'G':
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if (c->signature.gpg_output)
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strbuf_addstr(sb, c->signature.gpg_output);
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if (c->signature_check.gpg_output)
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strbuf_addstr(sb, c->signature_check.gpg_output);
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break;
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case '?':
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switch (c->signature.good_bad) {
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switch (c->signature_check.result) {
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case 'G':
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case 'B':
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strbuf_addch(sb, c->signature.good_bad);
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strbuf_addch(sb, c->signature_check.result);
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}
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break;
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case 'S':
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if (c->signature.signer)
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strbuf_addstr(sb, c->signature.signer);
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if (c->signature_check.signer)
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strbuf_addstr(sb, c->signature_check.signer);
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break;
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case 'K':
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if (c->signature.key)
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strbuf_addstr(sb, c->signature.key);
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if (c->signature_check.key)
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strbuf_addstr(sb, c->signature_check.key);
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break;
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}
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return 2;
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@ -1357,8 +1292,8 @@ void format_commit_message(const struct commit *commit,
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rewrap_message_tail(sb, &context, 0, 0, 0);
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logmsg_free(context.message, commit);
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free(context.signature.gpg_output);
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free(context.signature.signer);
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free(context.signature_check.gpg_output);
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free(context.signature_check.signer);
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}
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static void pp_header(const struct pretty_print_context *pp,
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