350 lines
8.9 KiB
C
350 lines
8.9 KiB
C
/* run-sign.c - Helper to perform a sign operation
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* Copyright (C) 2009 g10 Code GmbH
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*
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* This file is part of GPGME.
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*
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* GPGME is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* GPGME is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <https://gnu.org/licenses/>.
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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/* We need to include config.h so that we know whether we are building
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with large file system (LFS) support. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <gpgme.h>
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#define PGM "run-sign"
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#include "run-support.h"
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static int verbose;
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static gpg_error_t
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status_cb (void *opaque, const char *keyword, const char *value)
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{
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(void)opaque;
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printf ("status_cb: %s %s\n", keyword, value);
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return 0;
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}
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static void
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print_result (gpgme_sign_result_t result, gpgme_sig_mode_t type)
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{
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gpgme_invalid_key_t invkey;
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gpgme_new_signature_t sig;
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(void)type;
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for (invkey = result->invalid_signers; invkey; invkey = invkey->next)
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printf ("Signing key `%s' not used: %s <%s>\n",
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nonnull (invkey->fpr),
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gpg_strerror (invkey->reason), gpg_strsource (invkey->reason));
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for (sig = result->signatures; sig; sig = sig->next)
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{
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printf ("Key fingerprint: %s\n", nonnull (sig->fpr));
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printf ("Signature type : %d\n", sig->type);
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printf ("Public key algo: %d\n", sig->pubkey_algo);
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printf ("Hash algo .....: %d\n", sig->hash_algo);
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printf ("Creation time .: %ld\n", sig->timestamp);
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printf ("Sig class .....: 0x%u\n", sig->sig_class);
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}
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}
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static int
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show_usage (int ex)
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{
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fputs ("usage: " PGM " [options] FILE\n\n"
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"Options:\n"
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" --verbose run in verbose mode\n"
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" --status print status lines from the backend\n"
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" --openpgp use the OpenPGP protocol (default)\n"
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" --cms use the CMS protocol\n"
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" --uiserver use the UI server\n"
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" --loopback use a loopback pinentry\n"
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" --key NAME use key NAME for signing\n"
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" --sender MBOX use MBOX as sender address\n"
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" --include-key-block use this option with gpg\n"
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" --clear create a clear text signature\n"
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" --archive create a signed archive with the given file or directory\n"
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" --directory DIR switch to directory DIR before creating the archive\n"
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" --output FILE write output to FILE instead of stdout\n"
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" --diagnostics print diagnostics\n"
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, stderr);
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exit (ex);
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}
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int
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main (int argc, char **argv)
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{
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int last_argc = -1;
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gpgme_error_t err;
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gpgme_ctx_t ctx;
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const char *key_string = NULL;
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const char *directory = NULL;
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const char *output = NULL;
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gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
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gpgme_sig_mode_t sigmode = GPGME_SIG_MODE_NORMAL;
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gpgme_data_t in, out;
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gpgme_sign_result_t result;
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int print_status = 0;
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int use_loopback = 0;
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int include_key_block = 0;
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int diagnostics = 0;
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const char *sender = NULL;
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const char *s;
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if (argc)
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{ argc--; argv++; }
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while (argc && last_argc != argc )
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{
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last_argc = argc;
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if (!strcmp (*argv, "--"))
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{
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argc--; argv++;
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break;
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}
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else if (!strcmp (*argv, "--help"))
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show_usage (0);
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else if (!strcmp (*argv, "--verbose"))
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{
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verbose = 1;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--status"))
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{
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print_status = 1;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--openpgp"))
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{
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protocol = GPGME_PROTOCOL_OpenPGP;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--cms"))
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{
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protocol = GPGME_PROTOCOL_CMS;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--uiserver"))
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{
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protocol = GPGME_PROTOCOL_UISERVER;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--key"))
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{
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argc--; argv++;
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if (!argc)
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show_usage (1);
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key_string = *argv;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--sender"))
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{
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argc--; argv++;
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if (!argc)
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show_usage (1);
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sender = *argv;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--loopback"))
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{
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use_loopback = 1;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--include-key-block"))
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{
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include_key_block = 1;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--clear"))
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{
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sigmode = GPGME_SIG_MODE_CLEAR;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--archive"))
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{
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sigmode = GPGME_SIG_MODE_ARCHIVE;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--directory"))
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{
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argc--; argv++;
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if (!argc)
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show_usage (1);
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directory = *argv;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--output"))
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{
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argc--; argv++;
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if (!argc)
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show_usage (1);
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output = *argv;
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argc--; argv++;
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}
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else if (!strcmp (*argv, "--diagnostics"))
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{
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diagnostics = 1;
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argc--; argv++;
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}
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else if (!strncmp (*argv, "--", 2))
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show_usage (1);
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}
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if (argc != 1)
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show_usage (1);
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if (key_string && protocol == GPGME_PROTOCOL_UISERVER)
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{
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fprintf (stderr, PGM ": ignoring --key in UI-server mode\n");
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key_string = NULL;
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}
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init_gpgme (protocol);
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err = gpgme_new (&ctx);
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fail_if_err (err);
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gpgme_set_protocol (ctx, protocol);
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gpgme_set_armor (ctx, 1);
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if (print_status)
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gpgme_set_status_cb (ctx, status_cb, NULL);
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if (use_loopback)
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gpgme_set_pinentry_mode (ctx, GPGME_PINENTRY_MODE_LOOPBACK);
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if (key_string)
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{
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gpgme_key_t akey;
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err = gpgme_get_key (ctx, key_string, &akey, 1);
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if (err)
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{
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fprintf (stderr, PGM ": get key '%s' failed: %s\n",
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key_string, gpg_strerror (err));
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exit (1);
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}
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err = gpgme_signers_add (ctx, akey);
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fail_if_err (err);
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gpgme_key_unref (akey);
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}
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if (sender)
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{
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err = gpgme_set_sender (ctx, sender);
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fail_if_err (err);
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}
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if (include_key_block)
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{
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err = gpgme_set_ctx_flag (ctx, "include-key-block", "1");
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if (err)
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{
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fprintf (stderr, PGM ": error setting include-key-block: %s\n",
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gpgme_strerror (err));
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exit (1);
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}
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}
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if (sigmode == GPGME_SIG_MODE_ARCHIVE)
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{
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const char *path = *argv;
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err = gpgme_data_new_from_mem (&in, path, strlen (path), 0);
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fail_if_err (err);
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if (directory)
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{
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err = gpgme_data_set_file_name (in, directory);
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fail_if_err (err);
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}
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}
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else
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{
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err = gpgme_data_new_from_file (&in, *argv, 1);
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if (err)
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{
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fprintf (stderr, PGM ": error reading `%s': %s\n",
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*argv, gpg_strerror (err));
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exit (1);
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}
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}
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err = gpgme_data_new (&out);
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fail_if_err (err);
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if (output)
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{
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err = gpgme_data_set_file_name (out, output);
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fail_if_err (err);
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}
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err = gpgme_op_sign (ctx, in, out, sigmode);
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result = gpgme_op_sign_result (ctx);
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if (diagnostics)
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{
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gpgme_data_t diag;
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gpgme_error_t diag_err;
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gpgme_data_new (&diag);
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diag_err = gpgme_op_getauditlog (ctx, diag, GPGME_AUDITLOG_DIAG);
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if (diag_err)
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{
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fprintf (stderr, PGM ": getting diagnostics failed: %s\n",
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gpgme_strerror (diag_err));
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}
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else
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{
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fputs ("Begin Diagnostics:\n", stdout);
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print_data (diag);
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fputs ("End Diagnostics.\n", stdout);
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}
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gpgme_data_release (diag);
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}
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if (result)
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print_result (result, sigmode);
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if (err)
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{
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fprintf (stderr, PGM ": signing failed: %s\n", gpg_strerror (err));
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exit (1);
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}
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if ((s = gpgme_get_ctx_flag (ctx, "redraw")) && *s)
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fputs ("Screen redraw suggested\n", stdout);
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if (!output)
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{
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fputs ("Begin Output:\n", stdout);
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print_data (out);
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fputs ("End Output.\n", stdout);
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}
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gpgme_data_release (out);
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gpgme_data_release (in);
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gpgme_release (ctx);
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return 0;
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}
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