mirror of
git://git.gnupg.org/gnupg.git
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415 lines
10 KiB
C
415 lines
10 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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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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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#include <stdio.h>
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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 "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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static void
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i18n_init(void)
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{
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#ifdef USE_SIMPLE_GETTEXT
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set_gettext_file (PACKAGE_GT, "Software\\GNU\\GnuPG");
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#else
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#ifdef ENABLE_NLS
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE_GT, LOCALEDIR);
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textdomain (PACKAGE_GT);
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#endif
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#endif
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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 sl;
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STRLIST 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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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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set_native_charset (NULL); /* Try to auto set the character set */
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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 (iobuf_translate_file_handle (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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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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/* 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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return 0;
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}
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void
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check_trustdb_stale(void) {}
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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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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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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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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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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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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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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) { return NULL; }
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int
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keyserver_import_keyid( u32 *keyid, void *dummy )
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{
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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) { return -1; }
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int
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keyserver_import_pka(const char *name,unsigned char *fpr) { return -1; }
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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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return -1;
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}
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int
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keyserver_import_ldap(const char *name) { return -1; }
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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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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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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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return G10ERR_GENERAL;
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}
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/* Stub:
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* No interactive commnds, 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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}
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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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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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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 *parse_preferred_keyserver(PKT_signature *sig) {return NULL;}
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struct keyserver_spec *parse_keyserver_uri(const char *uri,int require_scheme,
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const char *configname,
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unsigned int configlineno)
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{
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return NULL;
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}
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void free_keyserver_spec(struct keyserver_spec *keyserver) {}
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/* Stubs to avoid linking to photoid.c */
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void show_photos(const struct user_attribute *attrs,int count,PKT_public_key *pk) {}
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int parse_image_header(const struct user_attribute *attr,byte *type,u32 *len) {return 0;}
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char *image_type_to_string(byte type,int string) {return NULL;}
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#ifdef ENABLE_CARD_SUPPORT
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int agent_scd_getattr (const char *name, struct agent_card_info_s *info) {return 0;}
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#endif /* ENABLE_CARD_SUPPORT */
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/* Stubs to void linking to ../cipher/cipher.c */
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const char *cipher_algo_to_string( int algo ) { return "?";}
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void disable_cipher_algo( int algo ) {}
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int check_cipher_algo( int algo ) { return -1;}
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unsigned int cipher_get_keylen( int algo ) { return 0; }
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unsigned int cipher_get_blocksize( int algo ) {return 0;}
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gcry_cipher_hd_t cipher_open( int algo, int mode, int secure ) { return NULL;}
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void cipher_close( gcry_cipher_hd_t c ) {}
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int cipher_setkey( gcry_cipher_hd_t c, byte *key, unsigned keylen ) { return -1;}
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void cipher_setiv( gcry_cipher_hd_t c, const byte *iv, unsigned ivlen ){}
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void cipher_encrypt( gcry_cipher_hd_t c, byte *outbuf,
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byte *inbuf, unsigned nbytes ) {}
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void cipher_decrypt( gcry_cipher_hd_t c, byte *outbuf,
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byte *inbuf, unsigned nbytes ) {}
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void cipher_sync( gcry_cipher_hd_t c ) {}
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/* Stubs to avoid linking to ../util/ttyio.c */
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int tty_batchmode( int onoff ) { return 0; }
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void tty_printf( const char *fmt, ... ) { }
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void tty_fprintf (FILE *fp, const char *fmt, ... ) { }
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void tty_print_string( const byte *p, size_t n ) { }
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void tty_print_utf8_string( const byte *p, size_t n ) {}
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void tty_print_utf8_string2( const byte *p, size_t n, size_t max_n ) {}
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char *tty_get( const char *prompt ) { return NULL;}
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char *tty_get_hidden( const char *prompt ) {return NULL; }
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void tty_kill_prompt(void) {}
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int tty_get_answer_is_yes( const char *prompt ) {return 0;}
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int tty_no_terminal(int onoff) {return 0;}
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#ifdef HAVE_LIBREADLINE
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void tty_enable_completion(rl_completion_func_t *completer) {}
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void tty_disable_completion(void) {}
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#endif
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/* We do not do any locking, so use these stubs here */
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void disable_dotlock(void) {}
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DOTLOCK create_dotlock( const char *file_to_lock ) { return NULL; }
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void destroy_dotlock (DOTLOCK h) {}
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int make_dotlock( DOTLOCK h, long timeout ) { return 0;}
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int release_dotlock( DOTLOCK h ) {return 0;}
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void remove_lockfiles(void) {}
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