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verify-tag: add option to print raw gpg status information
verify-tag by default displays human-readable output on standard error. However, it can also be useful to get access to the raw gpg status information, which is machine-readable, allowing automated implementation of signing policy. Add a --raw option to make verify-tag produce the gpg status information on standard error instead of the human-readable format. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -16,6 +16,10 @@ Validates the gpg signature created by 'git tag'.
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OPTIONS
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-------
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--raw::
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Print the raw gpg status output to standard error instead of the normal
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human-readable output.
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-v::
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--verbose::
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Print the contents of the tag object before validating it.
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@ -18,7 +18,7 @@ static const char * const verify_tag_usage[] = {
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NULL
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};
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static int run_gpg_verify(const char *buf, unsigned long size, int verbose)
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static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags)
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{
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struct signature_check sigc;
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int len;
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@ -29,19 +29,19 @@ static int run_gpg_verify(const char *buf, unsigned long size, int verbose)
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len = parse_signature(buf, size);
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if (size == len) {
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if (verbose)
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if (flags & GPG_VERIFY_VERBOSE)
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write_in_full(1, buf, len);
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return error("no signature found");
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}
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ret = check_signature(buf, len, buf + len, size - len, &sigc);
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print_signature_buffer(&sigc, verbose ? GPG_VERIFY_VERBOSE : 0);
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print_signature_buffer(&sigc, flags);
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signature_check_clear(&sigc);
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return ret;
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}
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static int verify_tag(const char *name, int verbose)
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static int verify_tag(const char *name, unsigned flags)
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{
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enum object_type type;
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unsigned char sha1[20];
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@ -61,7 +61,7 @@ static int verify_tag(const char *name, int verbose)
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if (!buf)
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return error("%s: unable to read file.", name);
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ret = run_gpg_verify(buf, size, verbose);
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ret = run_gpg_verify(buf, size, flags);
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free(buf);
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return ret;
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@ -78,8 +78,10 @@ static int git_verify_tag_config(const char *var, const char *value, void *cb)
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int cmd_verify_tag(int argc, const char **argv, const char *prefix)
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{
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int i = 1, verbose = 0, had_error = 0;
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unsigned flags = 0;
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const struct option verify_tag_options[] = {
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OPT__VERBOSE(&verbose, N_("print tag contents")),
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OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), GPG_VERIFY_RAW),
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OPT_END()
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};
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@ -90,11 +92,14 @@ int cmd_verify_tag(int argc, const char **argv, const char *prefix)
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if (argc <= i)
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usage_with_options(verify_tag_usage, verify_tag_options);
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if (verbose)
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flags |= GPG_VERIFY_VERBOSE;
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/* sometimes the program was terminated because this signal
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* was received in the process of writing the gpg input: */
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signal(SIGPIPE, SIG_IGN);
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while (i < argc)
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if (verify_tag(argv[i++], verbose))
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if (verify_tag(argv[i++], flags))
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had_error = 1;
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return had_error;
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}
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@ -81,4 +81,35 @@ test_expect_success GPG 'detect fudged signature' '
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! grep "Good signature from" actual1
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'
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test_expect_success GPG 'verify signatures with --raw' '
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(
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for tag in initial second merge fourth-signed sixth-signed seventh-signed
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do
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git verify-tag --raw $tag 2>actual &&
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grep "GOODSIG" actual &&
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! grep "BADSIG" actual &&
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echo $tag OK || exit 1
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done
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) &&
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(
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for tag in fourth-unsigned fifth-unsigned sixth-unsigned
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do
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test_must_fail git verify-tag --raw $tag 2>actual &&
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! grep "GOODSIG" actual &&
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! grep "BADSIG" actual &&
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echo $tag OK || exit 1
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done
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) &&
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(
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for tag in eighth-signed-alt
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do
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git verify-tag --raw $tag 2>actual &&
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grep "GOODSIG" actual &&
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! grep "BADSIG" actual &&
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grep "TRUST_UNDEFINED" actual &&
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echo $tag OK || exit 1
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done
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)
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'
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test_done
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