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 <https://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
50 #include "call-agent.h"
51 #include "../common/init.h"
54 enum cmd_and_opt_values {
66 oEnableSpecialFilenames,
71 static ARGPARSE_OPTS opts[] = {
72 ARGPARSE_group (300, N_("@\nOptions:\n ")),
74 ARGPARSE_s_n (oVerbose, "verbose", N_("verbose")),
75 ARGPARSE_s_n (oQuiet, "quiet", N_("be somewhat more quiet")),
76 ARGPARSE_s_s (oKeyring, "keyring",
77 N_("|FILE|take the keys from the keyring FILE")),
78 ARGPARSE_s_s (oOutput, "output", N_("|FILE|write output to FILE")),
79 ARGPARSE_s_n (oIgnoreTimeConflict, "ignore-time-conflict",
80 N_("make timestamp conflicts only a warning")),
81 ARGPARSE_s_i (oStatusFD, "status-fd",
82 N_("|FD|write status info to this FD")),
83 ARGPARSE_s_i (oLoggerFD, "logger-fd", "@"),
84 ARGPARSE_s_s (oHomedir, "homedir", "@"),
85 ARGPARSE_s_s (oWeakDigest, "weak-digest",
86 N_("|ALGO|reject signatures made with ALGO")),
87 ARGPARSE_s_n (oEnableSpecialFilenames, "enable-special-filenames", "@"),
94 int g10_errors_seen = 0;
98 make_libversion (const char *libname, const char *(*getfnc)(const char*))
104 result = xmalloc (strlen (libname) + 1 + strlen (s) + 1);
105 strcpy (stpcpy (stpcpy (result, libname), " "), s);
110 my_strusage( int level )
112 static char *ver_gcry;
117 case 11: p = "@GPG@v (GnuPG)";
119 case 13: p = VERSION; break;
120 case 17: p = PRINTABLE_OS_NAME; break;
121 case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
124 case 40: p = _("Usage: gpgv [options] [files] (-h for help)");
126 case 41: p = _("Syntax: gpgv [options] [files]\n"
127 "Check signatures against known trusted keys\n");
132 ver_gcry = make_libversion ("libgcrypt", gcry_check_version);
145 main( int argc, char **argv )
150 strlist_t nrings = NULL;
151 unsigned configlineno;
154 early_system_init ();
155 set_strusage (my_strusage);
156 log_set_prefix ("gpgv", GPGRT_LOG_WITH_PREFIX);
158 /* Make sure that our subsystems are ready. */
160 init_common_subsystems (&argc, &argv);
162 gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
164 gnupg_init_signals (0, NULL);
166 opt.command_fd = -1; /* no command fd */
167 opt.keyserver_options.options |= KEYSERVER_AUTO_KEY_RETRIEVE;
168 opt.trust_model = TM_ALWAYS;
169 opt.no_sig_cache = 1;
170 opt.flags.require_cross_cert = 1;
174 opt.weak_digests = NULL;
179 gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
180 additional_weak_digest("MD5");
184 pargs.flags= 1; /* do not remove the args */
185 while (optfile_parse( NULL, NULL, &configlineno, &pargs, opts))
189 case oQuiet: opt.quiet = 1; break;
193 gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
195 case oKeyring: append_to_strlist( &nrings, pargs.r.ret_str); break;
196 case oOutput: opt.outfile = pargs.r.ret_str; break;
198 set_status_fd (translate_sys2libc_fd_int (pargs.r.ret_int, 1));
201 log_set_fd (translate_sys2libc_fd_int (pargs.r.ret_int, 1));
203 case oHomedir: gnupg_set_homedir (pargs.r.ret_str); break;
205 additional_weak_digest(pargs.r.ret_str);
207 case oIgnoreTimeConflict: opt.ignore_time_conflict = 1; break;
208 case oEnableSpecialFilenames:
209 enable_special_filenames ();
211 default : pargs.err = ARGPARSE_PRINT_ERROR; break;
215 if (log_get_errorcount (0))
219 set_packet_list_mode(1);
221 /* Note: We open all keyrings in read-only mode. */
222 if (!nrings) /* No keyring given: use default one. */
223 keydb_add_resource ("trustedkeys" EXTSEP_S "kbx",
224 (KEYDB_RESOURCE_FLAG_READONLY
225 |KEYDB_RESOURCE_FLAG_GPGVDEF));
226 for (sl = nrings; sl; sl = sl->next)
227 keydb_add_resource (sl->d, KEYDB_RESOURCE_FLAG_READONLY);
229 FREE_STRLIST (nrings);
231 ctrl = xcalloc (1, sizeof *ctrl);
233 if ((rc = verify_signatures (ctrl, argc, argv)))
234 log_error("verify signatures failed: %s\n", gpg_strerror (rc) );
240 return 8; /*NOTREACHED*/
247 rc = rc? rc : log_get_errorcount(0)? 2 : g10_errors_seen? 1 : 0;
253 * We have to override the trustcheck from pkclist.c because
254 * this utility assumes that all keys in the keyring are trustworthy
257 check_signatures_trust (ctrl_t ctrl, PKT_signature *sig)
265 read_trust_options(byte *trust_model, ulong *created, ulong *nextcheck,
266 byte *marginals, byte *completes, byte *cert_depth,
267 byte *min_cert_level)
275 (void)min_cert_level;
279 * We don't have the trustdb , so we have to provide some stub functions
284 cache_disabled_value(PKT_public_key *pk)
291 check_trustdb_stale (ctrl_t ctrl)
297 get_validity_info (ctrl_t ctrl, kbnode_t kb, PKT_public_key *pk,
308 get_validity (ctrl_t ctrl, kbnode_t kb, PKT_public_key *pk, PKT_user_id *uid,
309 PKT_signature *sig, int may_ask)
321 trust_value_to_string (unsigned int value)
328 uid_trust_string_fixed (ctrl_t ctrl, PKT_public_key *key, PKT_user_id *uid)
337 get_ownertrust_info (PKT_public_key *pk)
344 get_ownertrust (PKT_public_key *pk)
347 return TRUST_UNKNOWN;
352 * Because we only work with trusted keys, it does not make sense to
353 * get them from a keyserver
356 struct keyserver_spec *
357 keyserver_match (struct keyserver_spec *spec)
364 keyserver_any_configured (ctrl_t ctrl)
371 keyserver_import_keyid (u32 *keyid, void *dummy, int quick)
380 keyserver_import_fprint (ctrl_t ctrl, const byte *fprint,size_t fprint_len,
381 struct keyserver_spec *keyserver, int quick)
392 keyserver_import_cert (const char *name)
399 keyserver_import_pka (const char *name,unsigned char *fpr)
407 keyserver_import_wkd (ctrl_t ctrl, const char *name, int quick,
408 unsigned char **fpr, size_t *fpr_len)
419 keyserver_import_name (const char *name,struct keyserver_spec *spec)
427 keyserver_import_ldap (const char *name)
435 read_key_from_file (ctrl_t ctrl, const char *fname, kbnode_t *r_keyblock)
445 * No encryption here but mainproc links to these functions.
448 get_session_key (ctrl_t ctrl, PKT_pubkey_enc *k, DEK *dek)
453 return GPG_ERR_GENERAL;
458 get_override_session_key (DEK *dek, const char *string)
462 return GPG_ERR_GENERAL;
467 decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
473 return GPG_ERR_GENERAL;
478 * No interactive commands, so we don't need the helptexts
481 display_online_help (const char *keyword)
487 * We don't use secret keys, but getkey.c links to this
490 check_secret_key (PKT_public_key *pk, int n)
494 return GPG_ERR_GENERAL;
498 * No secret key, so no passphrase needed
501 passphrase_to_dek (int cipher_algo, STRING2KEY *s2k, int create, int nocache,
502 const char *tmp, int *canceled)
516 passphrase_clear_cache (const char *cacheid)
521 struct keyserver_spec *
522 parse_preferred_keyserver(PKT_signature *sig)
528 struct keyserver_spec *
529 parse_keyserver_uri (const char *uri, int require_scheme,
530 const char *configname, unsigned int configlineno)
533 (void)require_scheme;
540 free_keyserver_spec (struct keyserver_spec *keyserver)
545 /* Stubs to avoid linking to photoid.c */
547 show_photos (const struct user_attribute *attrs, int count, PKT_public_key *pk)
555 parse_image_header (const struct user_attribute *attr, byte *type, u32 *len)
564 image_type_to_string (byte type, int string)
571 #ifdef ENABLE_CARD_SUPPORT
573 agent_scd_getattr (const char *name, struct agent_card_info_s *info)
579 #endif /* ENABLE_CARD_SUPPORT */
581 /* We do not do any locking, so use these stubs here */
583 dotlock_disable (void)
588 dotlock_create (const char *file_to_lock, unsigned int flags)
596 dotlock_destroy (dotlock_t h)
602 dotlock_take (dotlock_t h, long timeout)
610 dotlock_release (dotlock_t h)
617 dotlock_remove_lockfiles (void)
622 agent_probe_secret_key (ctrl_t ctrl, PKT_public_key *pk)
626 return gpg_error (GPG_ERR_NO_SECKEY);
630 agent_probe_any_secret_key (ctrl_t ctrl, kbnode_t keyblock)
634 return gpg_error (GPG_ERR_NO_SECKEY);
638 agent_get_keyinfo (ctrl_t ctrl, const char *hexkeygrip,
639 char **r_serialno, int *r_cleartext)
645 return gpg_error (GPG_ERR_NO_SECKEY);
649 gpg_dirmngr_get_pka (ctrl_t ctrl, const char *userid,
650 unsigned char **r_fpr, size_t *r_fprlen,
661 return gpg_error (GPG_ERR_NOT_FOUND);
665 export_pubkey_buffer (ctrl_t ctrl, const char *keyspec, unsigned int options,
666 export_stats_t stats,
667 kbnode_t *r_keyblock, void **r_data, size_t *r_datalen)
677 return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
681 tofu_write_tfs_record (ctrl_t ctrl, estream_t fp,
682 PKT_public_key *pk, const char *user_id)
688 return gpg_error (GPG_ERR_GENERAL);
692 tofu_get_policy (ctrl_t ctrl, PKT_public_key *pk, PKT_user_id *user_id,
693 enum tofu_policy *policy)
699 return gpg_error (GPG_ERR_GENERAL);
703 tofu_policy_str (enum tofu_policy policy)
711 tofu_begin_batch_update (ctrl_t ctrl)
717 tofu_end_batch_update (ctrl_t ctrl)
723 tofu_notice_key_changed (ctrl_t ctrl, kbnode_t kb)