mirror of
git://git.gnupg.org/gnupg.git
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502 lines
9.3 KiB
C
502 lines
9.3 KiB
C
/* gpgv.c - The GnuPG signature verify utility
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005,
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* 2006 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <unistd.h>
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#ifdef HAVE_DOSISH_SYSTEM
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#include <fcntl.h> /* for setmode() */
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#endif
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#ifdef HAVE_LIBREADLINE
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#define GNUPG_LIBREADLINE_H_INCLUDED
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#include <readline/readline.h>
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#endif
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#define INCLUDED_BY_MAIN_MODULE 1
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#include "gpg.h"
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#include "packet.h"
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#include "iobuf.h"
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#include "util.h"
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#include "main.h"
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#include "options.h"
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#include "keydb.h"
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#include "trustdb.h"
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#include "cipher.h"
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#include "filter.h"
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#include "ttyio.h"
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#include "i18n.h"
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#include "sysutils.h"
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#include "status.h"
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#include "call-agent.h"
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enum cmd_and_opt_values { aNull = 0,
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oQuiet = 'q',
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oVerbose = 'v',
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oBatch = 500,
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oKeyring,
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oIgnoreTimeConflict,
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oStatusFD,
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oLoggerFD,
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oHomedir,
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aTest };
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static ARGPARSE_OPTS opts[] = {
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{ 301, NULL, 0, N_("@\nOptions:\n ") },
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{ oVerbose, "verbose", 0, N_("verbose") },
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{ oQuiet, "quiet", 0, N_("be somewhat more quiet") },
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{ oKeyring, "keyring" ,2, N_("take the keys from this keyring")},
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{ oIgnoreTimeConflict, "ignore-time-conflict", 0,
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N_("make timestamp conflicts only a warning") },
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{ oStatusFD, "status-fd" ,1, N_("|FD|write status info to this FD") },
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{ oLoggerFD, "logger-fd",1, "@" },
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{ oHomedir, "homedir", 2, "@" }, /* defaults to "~/.gnupg" */
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{0} };
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int g10_errors_seen = 0;
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static const char *
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my_strusage( int level )
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{
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const char *p;
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switch( level ) {
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case 11: p = "gpgv (GnuPG)";
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break;
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case 13: p = VERSION; break;
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case 17: p = PRINTABLE_OS_NAME; break;
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case 19: p =
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_("Please report bugs to <gnupg-bugs@gnu.org>.\n");
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break;
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case 1:
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case 40: p =
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_("Usage: gpgv [options] [files] (-h for help)");
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break;
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case 41: p =
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_("Syntax: gpg [options] [files]\n"
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"Check signatures against known trusted keys\n");
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break;
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default: p = NULL;
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}
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return p;
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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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ARGPARSE_ARGS pargs;
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int rc=0;
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strlist_t sl;
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strlist_t nrings=NULL;
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unsigned configlineno;
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set_strusage (my_strusage);
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log_set_prefix ("gpgv", 1);
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/* Make sure that our subsystems are ready. */
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init_common_subsystems ();
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gnupg_init_signals (0, NULL);
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i18n_init();
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opt.command_fd = -1; /* no command fd */
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opt.pgp2_workarounds = 1;
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opt.keyserver_options.options|=KEYSERVER_AUTO_KEY_RETRIEVE;
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opt.trust_model = TM_ALWAYS;
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opt.batch = 1;
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opt.homedir = default_homedir ();
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tty_no_terminal(1);
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tty_batchmode(1);
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disable_dotlock();
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pargs.argc = &argc;
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pargs.argv = &argv;
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pargs.flags= 1; /* do not remove the args */
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while( optfile_parse( NULL, NULL, &configlineno, &pargs, opts) ) {
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switch( pargs.r_opt ) {
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case oQuiet: opt.quiet = 1; break;
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case oVerbose:
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opt.verbose++;
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opt.list_sigs=1;
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gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
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break;
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case oKeyring: append_to_strlist( &nrings, pargs.r.ret_str); break;
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case oStatusFD: set_status_fd( pargs.r.ret_int ); break;
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case oLoggerFD:
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log_set_fd (translate_sys2libc_fd_int (pargs.r.ret_int, 1));
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break;
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case oHomedir: opt.homedir = pargs.r.ret_str; break;
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case oIgnoreTimeConflict: opt.ignore_time_conflict = 1; break;
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default : pargs.err = 2; break;
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}
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}
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if( log_get_errorcount(0) )
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g10_exit(2);
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if( opt.verbose > 1 )
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set_packet_list_mode(1);
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if( !nrings ) /* no keyring given: use default one */
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keydb_add_resource ("trustedkeys" EXTSEP_S "gpg", 0, 0);
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for(sl = nrings; sl; sl = sl->next )
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keydb_add_resource (sl->d, 0, 0 );
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FREE_STRLIST (nrings);
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if( (rc = verify_signatures( argc, argv ) ))
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log_error("verify signatures failed: %s\n", g10_errstr(rc) );
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/* cleanup */
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g10_exit(0);
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return 8; /*NEVER REACHED*/
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}
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void
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g10_exit( int rc )
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{
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rc = rc? rc : log_get_errorcount(0)? 2 :
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g10_errors_seen? 1 : 0;
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exit(rc );
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}
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/* Stub:
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* We have to override the trustcheck from pkclist.c becuase
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* this utility assumes that all keys in the keyring are trustworthy
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*/
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int
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check_signatures_trust( PKT_signature *sig )
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{
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(void)sig;
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return 0;
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}
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void
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read_trust_options(byte *trust_model, ulong *created, ulong *nextcheck,
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byte *marginals, byte *completes, byte *cert_depth)
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{
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(void)trust_model;
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(void)created;
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(void)nextcheck;
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(void)marginals;
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(void)completes;
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(void)cert_depth;
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}
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/* Stub:
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* We don't have the trustdb , so we have to provide some stub functions
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* instead
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*/
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int
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cache_disabled_value(PKT_public_key *pk)
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{
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(void)pk;
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return 0;
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}
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void
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check_trustdb_stale(void)
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{
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}
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int
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get_validity_info (PKT_public_key *pk, PKT_user_id *uid)
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{
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(void)pk;
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(void)uid;
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return '?';
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}
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unsigned int
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get_validity (PKT_public_key *pk, PKT_user_id *uid)
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{
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(void)pk;
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(void)uid;
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return 0;
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}
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const char *
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trust_value_to_string (unsigned int value)
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{
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(void)value;
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return "err";
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}
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const char *
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uid_trust_string_fixed (PKT_public_key *key, PKT_user_id *uid)
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{
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(void)key;
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(void)uid;
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return "err";
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}
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int
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get_ownertrust_info (PKT_public_key *pk)
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{
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(void)pk;
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return '?';
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}
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unsigned int
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get_ownertrust (PKT_public_key *pk)
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{
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(void)pk;
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return TRUST_UNKNOWN;
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}
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/* Stubs:
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* Because we only work with trusted keys, it does not make sense to
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* get them from a keyserver
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*/
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struct keyserver_spec *
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keyserver_match (struct keyserver_spec *spec)
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{
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(void)spec;
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return NULL;
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}
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int
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keyserver_import_keyid (u32 *keyid, void *dummy)
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{
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(void)keyid;
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(void)dummy;
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return -1;
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}
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int
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keyserver_import_cert (const char *name)
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{
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(void)name;
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return -1;
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}
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int
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keyserver_import_pka (const char *name,unsigned char *fpr)
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{
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(void)name;
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(void)fpr;
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return -1;
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}
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int
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keyserver_import_name (const char *name,struct keyserver_spec *spec)
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{
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(void)name;
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(void)spec;
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return -1;
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}
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int
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keyserver_import_ldap (const char *name)
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{
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(void)name;
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return -1;
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}
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/* Stub:
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* No encryption here but mainproc links to these functions.
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*/
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int
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get_session_key (PKT_pubkey_enc *k, DEK *dek)
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{
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(void)k;
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(void)dek;
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return G10ERR_GENERAL;
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}
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/* Stub: */
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int
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get_override_session_key (DEK *dek, const char *string)
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{
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(void)dek;
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(void)string;
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return G10ERR_GENERAL;
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}
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/* Stub: */
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int
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decrypt_data (void *procctx, PKT_encrypted *ed, DEK *dek)
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{
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(void)procctx;
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(void)ed;
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(void)dek;
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return G10ERR_GENERAL;
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}
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/* Stub:
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* No interactive commands, so we don't need the helptexts
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*/
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void
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display_online_help (const char *keyword)
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{
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(void)keyword;
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}
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/* Stub:
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* We don't use secret keys, but getkey.c links to this
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*/
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int
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check_secret_key (PKT_secret_key *sk, int n)
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{
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(void)sk;
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(void)n;
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return G10ERR_GENERAL;
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}
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/* Stub:
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* No secret key, so no passphrase needed
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*/
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DEK *
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passphrase_to_dek (u32 *keyid, int pubkey_algo,
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int cipher_algo, STRING2KEY *s2k, int mode,
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const char *tmp, int *canceled)
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{
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(void)keyid;
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(void)pubkey_algo;
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(void)cipher_algo;
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(void)s2k;
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(void)mode;
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(void)tmp;
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if (canceled)
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*canceled = 0;
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return NULL;
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}
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struct keyserver_spec *
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parse_preferred_keyserver(PKT_signature *sig)
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{
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(void)sig;
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return NULL;
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}
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struct keyserver_spec *
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parse_keyserver_uri (const char *uri, int require_scheme,
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const char *configname, unsigned int configlineno)
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{
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(void)uri;
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(void)require_scheme;
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(void)configname;
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(void)configlineno;
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return NULL;
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}
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void
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free_keyserver_spec (struct keyserver_spec *keyserver)
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{
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(void)keyserver;
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}
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/* Stubs to avoid linking to photoid.c */
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void
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show_photos (const struct user_attribute *attrs, int count, PKT_public_key *pk)
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{
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(void)attrs;
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(void)count;
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(void)pk;
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}
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int
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parse_image_header (const struct user_attribute *attr, byte *type, u32 *len)
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{
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(void)attr;
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(void)type;
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(void)len;
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return 0;
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}
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char *
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image_type_to_string (byte type, int string)
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{
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(void)type;
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(void)string;
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return NULL;
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}
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#ifdef ENABLE_CARD_SUPPORT
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int
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agent_scd_getattr (const char *name, struct agent_card_info_s *info)
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{
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(void)name;
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(void)info;
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return 0;
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}
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#endif /* ENABLE_CARD_SUPPORT */
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/* We do not do any locking, so use these stubs here */
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void
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disable_dotlock (void)
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{
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}
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DOTLOCK
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create_dotlock (const char *file_to_lock)
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{
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(void)file_to_lock;
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return NULL;
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}
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void
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destroy_dotlock (DOTLOCK h)
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{
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(void)h;
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}
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int
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make_dotlock (DOTLOCK h, long timeout)
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{
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(void)h;
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(void)timeout;
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return 0;
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}
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int
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release_dotlock (DOTLOCK h)
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{
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(void)h;
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return 0;
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}
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void
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remove_lockfiles (void)
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{
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}
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