1 /* gpgv.c - The GnuPG signature verify utility
2 * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005, 2006,
3 * 2008, 2009, 2012 Free Software Foundation, Inc.
5 * This file is part of GnuPG.
7 * GnuPG is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
12 * GnuPG is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
28 #ifdef HAVE_DOSISH_SYSTEM
29 #include <fcntl.h> /* for setmode() */
31 #ifdef HAVE_LIBREADLINE
32 #define GNUPG_LIBREADLINE_H_INCLUDED
33 #include <readline/readline.h>
36 #define INCLUDED_BY_MAIN_MODULE 1
51 #include "call-agent.h"
54 enum cmd_and_opt_values {
68 static ARGPARSE_OPTS opts[] = {
69 ARGPARSE_group (300, N_("@\nOptions:\n ")),
71 ARGPARSE_s_n (oVerbose, "verbose", N_("verbose")),
72 ARGPARSE_s_n (oQuiet, "quiet", N_("be somewhat more quiet")),
73 ARGPARSE_s_s (oKeyring, "keyring",
74 N_("|FILE|take the keys from the keyring FILE")),
75 ARGPARSE_s_n (oIgnoreTimeConflict, "ignore-time-conflict",
76 N_("make timestamp conflicts only a warning")),
77 ARGPARSE_s_i (oStatusFD, "status-fd",
78 N_("|FD|write status info to this FD")),
79 ARGPARSE_s_i (oLoggerFD, "logger-fd", "@"),
80 ARGPARSE_s_s (oHomedir, "homedir", "@"),
87 int g10_errors_seen = 0;
91 make_libversion (const char *libname, const char *(*getfnc)(const char*))
97 result = xmalloc (strlen (libname) + 1 + strlen (s) + 1);
98 strcpy (stpcpy (stpcpy (result, libname), " "), s);
103 my_strusage( int level )
105 static char *ver_gcry;
110 case 11: p = "gpgv (GnuPG)";
112 case 13: p = VERSION; break;
113 case 17: p = PRINTABLE_OS_NAME; break;
114 case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
117 case 40: p = _("Usage: gpgv [options] [files] (-h for help)");
119 case 41: p = _("Syntax: gpgv [options] [files]\n"
120 "Check signatures against known trusted keys\n");
125 ver_gcry = make_libversion ("libgcrypt", gcry_check_version);
138 main( int argc, char **argv )
143 strlist_t nrings=NULL;
144 unsigned configlineno;
146 set_strusage (my_strusage);
147 log_set_prefix ("gpgv", 1);
149 /* Make sure that our subsystems are ready. */
151 init_common_subsystems ();
153 if (!gcry_check_version (NEED_LIBGCRYPT_VERSION) )
155 log_fatal ( _("%s is too old (need %s, have %s)\n"), "libgcrypt",
156 NEED_LIBGCRYPT_VERSION, gcry_check_version (NULL) );
158 gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
160 gnupg_init_signals (0, NULL);
162 opt.command_fd = -1; /* no command fd */
163 opt.pgp2_workarounds = 1;
164 opt.keyserver_options.options|=KEYSERVER_AUTO_KEY_RETRIEVE;
165 opt.trust_model = TM_ALWAYS;
166 opt.no_sig_cache = 1;
167 opt.flags.require_cross_cert = 1;
170 opt.homedir = default_homedir ();
176 gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
180 pargs.flags= 1; /* do not remove the args */
181 while (optfile_parse( NULL, NULL, &configlineno, &pargs, opts))
185 case oQuiet: opt.quiet = 1; break;
189 gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
191 case oKeyring: append_to_strlist( &nrings, pargs.r.ret_str); break;
192 case oStatusFD: set_status_fd( pargs.r.ret_int ); break;
194 log_set_fd (translate_sys2libc_fd_int (pargs.r.ret_int, 1));
196 case oHomedir: opt.homedir = pargs.r.ret_str; break;
197 case oIgnoreTimeConflict: opt.ignore_time_conflict = 1; break;
198 default : pargs.err = ARGPARSE_PRINT_ERROR; break;
202 if (log_get_errorcount (0))
206 set_packet_list_mode(1);
208 /* Note: We open all keyrings in read-only mode (flag value: 8). */
209 if (!nrings) /* No keyring given: use default one. */
210 keydb_add_resource ("trustedkeys" EXTSEP_S "gpg", 8, 0);
211 for (sl = nrings; sl; sl = sl->next)
212 keydb_add_resource (sl->d, 8, 0 );
214 FREE_STRLIST (nrings);
216 if ( (rc = verify_signatures( argc, argv ) ))
217 log_error("verify signatures failed: %s\n", g10_errstr(rc) );
221 return 8; /*NOTREACHED*/
228 rc = rc? rc : log_get_errorcount(0)? 2 : g10_errors_seen? 1 : 0;
234 * We have to override the trustcheck from pkclist.c becuase
235 * this utility assumes that all keys in the keyring are trustworthy
238 check_signatures_trust( PKT_signature *sig )
245 read_trust_options(byte *trust_model, ulong *created, ulong *nextcheck,
246 byte *marginals, byte *completes, byte *cert_depth,
247 byte *min_cert_level)
255 (void)min_cert_level;
259 * We don't have the trustdb , so we have to provide some stub functions
264 cache_disabled_value(PKT_public_key *pk)
271 check_trustdb_stale(void)
276 get_validity_info (PKT_public_key *pk, PKT_user_id *uid)
284 get_validity (PKT_public_key *pk, PKT_user_id *uid)
292 trust_value_to_string (unsigned int value)
299 uid_trust_string_fixed (PKT_public_key *key, PKT_user_id *uid)
307 get_ownertrust_info (PKT_public_key *pk)
314 get_ownertrust (PKT_public_key *pk)
317 return TRUST_UNKNOWN;
322 * Because we only work with trusted keys, it does not make sense to
323 * get them from a keyserver
326 struct keyserver_spec *
327 keyserver_match (struct keyserver_spec *spec)
334 keyserver_import_keyid (u32 *keyid, void *dummy)
342 keyserver_import_cert (const char *name)
349 keyserver_import_pka (const char *name,unsigned char *fpr)
357 keyserver_import_name (const char *name,struct keyserver_spec *spec)
365 keyserver_import_ldap (const char *name)
372 * No encryption here but mainproc links to these functions.
375 get_session_key (PKT_pubkey_enc *k, DEK *dek)
379 return G10ERR_GENERAL;
384 get_override_session_key (DEK *dek, const char *string)
388 return G10ERR_GENERAL;
393 decrypt_data (void *procctx, PKT_encrypted *ed, DEK *dek)
398 return G10ERR_GENERAL;
403 * No interactive commands, so we don't need the helptexts
406 display_online_help (const char *keyword)
412 * We don't use secret keys, but getkey.c links to this
415 check_secret_key (PKT_secret_key *sk, int n)
419 return G10ERR_GENERAL;
423 * No secret key, so no passphrase needed
426 passphrase_to_dek (u32 *keyid, int pubkey_algo,
427 int cipher_algo, STRING2KEY *s2k, int mode,
428 const char *tmp, int *canceled)
443 passphrase_clear_cache (u32 *keyid, const char *cacheid, int algo)
450 struct keyserver_spec *
451 parse_preferred_keyserver(PKT_signature *sig)
457 struct keyserver_spec *
458 parse_keyserver_uri (const char *uri, int require_scheme,
459 const char *configname, unsigned int configlineno)
462 (void)require_scheme;
469 free_keyserver_spec (struct keyserver_spec *keyserver)
474 /* Stubs to avoid linking to photoid.c */
476 show_photos (const struct user_attribute *attrs, int count, PKT_public_key *pk)
484 parse_image_header (const struct user_attribute *attr, byte *type, u32 *len)
493 image_type_to_string (byte type, int string)
500 #ifdef ENABLE_CARD_SUPPORT
502 agent_scd_getattr (const char *name, struct agent_card_info_s *info)
508 #endif /* ENABLE_CARD_SUPPORT */
510 /* We do not do any locking, so use these stubs here */
512 disable_dotlock (void)
517 create_dotlock (const char *file_to_lock)
524 destroy_dotlock (DOTLOCK h)
530 make_dotlock (DOTLOCK h, long timeout)
538 release_dotlock (DOTLOCK h)
545 remove_lockfiles (void)