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841 lines
20 KiB
C
841 lines
20 KiB
C
/* mainproc.c - handle packets
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* Copyright (C) 1998 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.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 <assert.h>
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#include "packet.h"
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#include "iobuf.h"
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#include "memory.h"
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#include "options.h"
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#include "util.h"
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#include "cipher.h"
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#include "keydb.h"
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#include "filter.h"
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#include "cipher.h"
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#include "main.h"
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#include "status.h"
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/****************
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* Structure to hold the context
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*/
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typedef struct {
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PKT_public_cert *last_pubkey;
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PKT_secret_cert *last_seckey;
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PKT_user_id *last_user_id;
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md_filter_context_t mfx;
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int sigs_only; /* process only signatures and reject all other stuff */
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int encrypt_only; /* process only encrytion messages */
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STRLIST signed_data;
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DEK *dek;
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int last_was_session_key;
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KBNODE list; /* the current list of packets */
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int have_data;
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IOBUF iobuf; /* used to get the filename etc. */
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} *CTX;
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static int do_proc_packets( CTX c, IOBUF a );
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static void list_node( CTX c, KBNODE node );
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static void proc_tree( CTX c, KBNODE node );
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static void
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release_list( CTX c )
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{
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if( !c->list )
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return;
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proc_tree(c, c->list );
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release_kbnode( c->list );
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c->list = NULL;
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}
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static int
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add_onepass_sig( CTX c, PACKET *pkt )
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{
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KBNODE node;
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if( c->list ) { /* add another packet */
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if( c->list->pkt->pkttype != PKT_ONEPASS_SIG ) {
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log_error("add_onepass_sig: another packet is in the way\n");
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release_list( c );
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}
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add_kbnode( c->list, new_kbnode( pkt ));
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}
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else /* insert the first one */
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c->list = node = new_kbnode( pkt );
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return 1;
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}
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static int
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add_user_id( CTX c, PACKET *pkt )
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{
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if( !c->list ) {
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log_error("orphaned user id\n" );
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return 0;
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}
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add_kbnode( c->list, new_kbnode( pkt ) );
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return 1;
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}
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static int
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add_subkey( CTX c, PACKET *pkt )
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{
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if( !c->list ) {
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log_error("subkey w/o mainkey\n" );
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return 0;
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}
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add_kbnode( c->list, new_kbnode( pkt ) );
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return 1;
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}
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static int
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add_signature( CTX c, PACKET *pkt )
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{
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KBNODE node;
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if( pkt->pkttype == PKT_SIGNATURE && !c->list ) {
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/* This is the first signature for the following datafile.
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* G10 does not write such packets; instead it always uses
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* onepass-sig packets. The drawback of PGP's method
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* of prepending the signature to the data is
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* that it is not possible to make a signature from data read
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* from stdin. (G10 is able to read PGP stuff anyway.) */
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node = new_kbnode( pkt );
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c->list = node;
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return 1;
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}
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else if( !c->list )
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return 0; /* oops (invalid packet sequence)*/
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else if( !c->list->pkt )
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BUG(); /* so nicht */
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/* add a new signature node id at the end */
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node = new_kbnode( pkt );
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add_kbnode( c->list, node );
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return 1;
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}
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static void
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proc_symkey_enc( CTX c, PACKET *pkt )
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{
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/* FIXME: NOT READY */
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#if 0
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PKT_symkey_enc *enc;
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int result = 0;
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c->last_was_session_key = 1;
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enc = pkt->pkt.symkey_enc;
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if( enc->pubkey_algo == PUBKEY_ALGO_ELGAMAL
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|| enc->pubkey_algo == PUBKEY_ALGO_DSA
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|| enc->pubkey_algo == PUBKEY_ALGO_RSA ) {
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m_free(c->dek ); /* paranoid: delete a pending DEK */
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c->dek = m_alloc_secure( sizeof *c->dek );
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if( (result = get_session_key( enc, c->dek )) ) {
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/* error: delete the DEK */
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m_free(c->dek); c->dek = NULL;
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}
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}
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else
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result = G10ERR_PUBKEY_ALGO;
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if( result == -1 )
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;
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else if( !result ) {
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if( opt.verbose > 1 )
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log_info( "pubkey_enc packet: Good DEK\n" );
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}
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else
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log_error( "pubkey_enc packet: %s\n", g10_errstr(result));
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free_packet(pkt);
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#endif
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}
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static void
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proc_pubkey_enc( CTX c, PACKET *pkt )
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{
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PKT_pubkey_enc *enc;
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int result = 0;
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c->last_was_session_key = 1;
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enc = pkt->pkt.pubkey_enc;
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/*printf("enc: encrypted by a pubkey with keyid %08lX\n", enc->keyid[1] );*/
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if( enc->pubkey_algo == PUBKEY_ALGO_ELGAMAL
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|| enc->pubkey_algo == PUBKEY_ALGO_DSA
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|| enc->pubkey_algo == PUBKEY_ALGO_RSA ) {
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m_free(c->dek ); /* paranoid: delete a pending DEK */
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c->dek = m_alloc_secure( sizeof *c->dek );
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if( (result = get_session_key( enc, c->dek )) ) {
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/* error: delete the DEK */
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m_free(c->dek); c->dek = NULL;
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}
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}
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else
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result = G10ERR_PUBKEY_ALGO;
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if( result == -1 )
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;
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else if( !result ) {
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if( opt.verbose > 1 )
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log_info( "pubkey_enc packet: Good DEK\n" );
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}
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else
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log_error( "pubkey_enc packet: %s\n", g10_errstr(result));
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free_packet(pkt);
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}
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static void
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proc_encrypted( CTX c, PACKET *pkt )
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{
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int result = 0;
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/*printf("dat: %sencrypted data\n", c->dek?"":"conventional ");*/
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if( !c->dek && !c->last_was_session_key ) {
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/* assume this is old conventional encrypted data */
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c->dek = m_alloc_secure( sizeof *c->dek );
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c->dek->algo = opt.def_cipher_algo;
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result = make_dek_from_passphrase( c->dek, 0, NULL );
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}
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else if( !c->dek )
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result = G10ERR_NO_SECKEY;
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if( !result )
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result = decrypt_data( pkt->pkt.encrypted, c->dek );
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m_free(c->dek); c->dek = NULL;
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if( result == -1 )
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;
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else if( !result ) {
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if( opt.verbose > 1 )
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log_info("encryption okay\n");
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}
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else {
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log_error("encryption failed: %s\n", g10_errstr(result));
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}
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free_packet(pkt);
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c->last_was_session_key = 0;
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}
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static void
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proc_plaintext( CTX c, PACKET *pkt )
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{
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PKT_plaintext *pt = pkt->pkt.plaintext;
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int rc;
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if( opt.verbose )
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log_info("original file name='%.*s'\n", pt->namelen, pt->name);
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free_md_filter_context( &c->mfx );
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/* fixme: take the digest algo(s) to use from the
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* onepass_sig packet (if we have these)
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* And look at the sigclass to check whether we should use the
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* textmode filter (sigclass 0x01)
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*/
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c->mfx.md = md_open( DIGEST_ALGO_RMD160, 0);
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md_enable( c->mfx.md, DIGEST_ALGO_SHA1 );
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md_enable( c->mfx.md, DIGEST_ALGO_MD5 );
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rc = handle_plaintext( pt, &c->mfx );
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if( rc )
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log_error( "handle plaintext failed: %s\n", g10_errstr(rc));
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free_packet(pkt);
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c->last_was_session_key = 0;
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}
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static int
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proc_compressed_cb( IOBUF a, void *info )
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{
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return proc_signature_packets( a, ((CTX)info)->signed_data );
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}
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static int
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proc_encrypt_cb( IOBUF a, void *info )
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{
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return proc_encryption_packets( a );
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}
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static void
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proc_compressed( CTX c, PACKET *pkt )
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{
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PKT_compressed *zd = pkt->pkt.compressed;
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int rc;
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/*printf("zip: compressed data packet\n");*/
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if( c->sigs_only )
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rc = handle_compressed( zd, proc_compressed_cb, c );
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else if( c->encrypt_only )
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rc = handle_compressed( zd, proc_encrypt_cb, c );
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else
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rc = handle_compressed( zd, NULL, NULL );
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if( rc )
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log_error("uncompressing failed: %s\n", g10_errstr(rc));
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free_packet(pkt);
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c->last_was_session_key = 0;
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}
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/****************
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* check the signature
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* Returns: 0 = valid signature or an error code
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*/
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static int
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do_check_sig( CTX c, KBNODE node )
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{
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PKT_signature *sig;
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MD_HANDLE md;
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int algo, rc;
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assert( node->pkt->pkttype == PKT_SIGNATURE );
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sig = node->pkt->pkt.signature;
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algo = digest_algo_from_sig( sig );
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if( !algo )
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return G10ERR_PUBKEY_ALGO;
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if( (rc=check_digest_algo(algo)) )
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return rc;
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if( sig->sig_class == 0x00 ) {
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if( c->mfx.md )
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md = md_copy( c->mfx.md );
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else /* detached signature */
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md = md_open( 0, 0 ); /* signature_check() will enable the md*/
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}
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else if( sig->sig_class == 0x01 ) {
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/* how do we know that we have to hash the (already hashed) text
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* in canonical mode ??? (calculating both modes???) */
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if( c->mfx.md )
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md = md_copy( c->mfx.md );
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else /* detached signature */
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md = md_open( 0, 0 ); /* signature_check() will enable the md*/
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}
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else if( (sig->sig_class&~3) == 0x10
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|| sig->sig_class == 0x18
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|| sig->sig_class == 0x20
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|| sig->sig_class == 0x30 ) { /* classes 0x10..0x17,0x20,0x30 */
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if( c->list->pkt->pkttype == PKT_PUBLIC_CERT
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|| c->list->pkt->pkttype == PKT_PUBKEY_SUBCERT ) {
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return check_key_signature( c->list, node, NULL );
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}
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else {
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log_error("invalid root packet for sigclass %02x\n",
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sig->sig_class);
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return G10ERR_SIG_CLASS;
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}
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}
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else
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return G10ERR_SIG_CLASS;
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rc = signature_check( sig, md );
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md_close(md);
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return rc;
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}
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static void
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print_userid( PACKET *pkt )
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{
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if( !pkt )
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BUG();
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if( pkt->pkttype != PKT_USER_ID ) {
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printf("ERROR: unexpected packet type %d", pkt->pkttype );
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return;
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}
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print_string( stdout, pkt->pkt.user_id->name, pkt->pkt.user_id->len,
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opt.with_colons );
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}
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static void
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print_fingerprint( PKT_public_cert *pkc, PKT_secret_cert *skc )
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{
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byte *array, *p;
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size_t i, n;
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p = array = skc? fingerprint_from_skc( skc, &n )
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: fingerprint_from_pkc( pkc, &n );
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if( opt.with_colons ) {
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printf("fpr:::::::::");
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for(i=0; i < n ; i++, p++ )
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printf("%02X", *p );
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putchar(':');
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}
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else {
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printf(" Key fingerprint =");
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if( n == 20 ) {
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for(i=0; i < n ; i++, i++, p += 2 ) {
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if( i == 10 )
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putchar(' ');
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printf(" %02X%02X", *p, p[1] );
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}
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}
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else {
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for(i=0; i < n ; i++, p++ ) {
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if( i && !(i%8) )
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putchar(' ');
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printf(" %02X", *p );
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}
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}
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}
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putchar('\n');
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m_free(array);
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}
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/****************
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* List the certificate in a user friendly way
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*/
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static void
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list_node( CTX c, KBNODE node )
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{
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int any=0;
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int mainkey;
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if( !node )
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;
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else if( (mainkey = (node->pkt->pkttype == PKT_PUBLIC_CERT) )
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|| node->pkt->pkttype == PKT_PUBKEY_SUBCERT ) {
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PKT_public_cert *pkc = node->pkt->pkt.public_cert;
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if( opt.with_colons ) {
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u32 keyid[2];
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keyid_from_pkc( pkc, keyid );
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printf("%s::%u:%d:%08lX%08lX:%s:%u:::",
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mainkey? "pub":"sub",
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/* fixme: add trust value here */
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nbits_from_pkc( pkc ),
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pkc->pubkey_algo,
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(ulong)keyid[0],(ulong)keyid[1],
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datestr_from_pkc( pkc ),
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(unsigned)pkc->valid_days
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/* fixme: add LID and ownertrust here */
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);
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}
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else
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printf("%s %4u%c/%08lX %s ",
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mainkey? "pub":"sub",
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nbits_from_pkc( pkc ),
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pubkey_letter( pkc->pubkey_algo ),
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(ulong)keyid_from_pkc( pkc, NULL ),
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datestr_from_pkc( pkc ) );
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/* and now list all userids with their signatures */
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for( node = node->next; node; node = node->next ) {
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if( any != 2 && node->pkt->pkttype == PKT_SIGNATURE ) {
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if( !any ) {
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if( node->pkt->pkt.signature->sig_class == 0x20 )
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puts("[revoked]");
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else
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putchar('\n');
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}
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list_node(c, node );
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any = 1;
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}
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else if( node->pkt->pkttype == PKT_USER_ID ) {
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KBNODE n;
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if( any ) {
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if( opt.with_colons )
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printf("uid:::::::::");
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else
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printf( "uid%*s", 28, "" );
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}
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print_userid( node->pkt );
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if( opt.with_colons )
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putchar(':');
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putchar('\n');
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if( opt.fingerprint && !any )
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print_fingerprint( pkc, NULL );
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for( n=node->next; n; n = n->next ) {
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if( n->pkt->pkttype == PKT_USER_ID )
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break;
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if( n->pkt->pkttype == PKT_SIGNATURE )
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list_node(c, n );
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}
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any=2;
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}
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else if( mainkey && node->pkt->pkttype == PKT_PUBKEY_SUBCERT ) {
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if( !any ) {
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putchar('\n');
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any = 1;
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}
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list_node(c, node );
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}
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}
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if( any != 2 && mainkey )
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printf("ERROR: no user id!\n");
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else if( any != 2 )
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putchar('\n');
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}
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else if( (mainkey = (node->pkt->pkttype == PKT_SECRET_CERT) )
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|| node->pkt->pkttype == PKT_SECKEY_SUBCERT ) {
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PKT_secret_cert *skc = node->pkt->pkt.secret_cert;
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printf("%s %4u%c/%08lX %s ",
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mainkey? "sec":"ssb",
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nbits_from_skc( skc ),
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pubkey_letter( skc->pubkey_algo ),
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(ulong)keyid_from_skc( skc, NULL ),
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datestr_from_skc( skc ) );
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/* and now list all userids */
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while( (node = find_next_kbnode(node, PKT_USER_ID)) ) {
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print_userid( node->pkt );
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putchar('\n');
|
|
if( opt.fingerprint && !any )
|
|
print_fingerprint( NULL, skc );
|
|
any=1;
|
|
}
|
|
if( !any && mainkey )
|
|
printf("ERROR: no user id!\n");
|
|
else if( !any )
|
|
putchar('\n');
|
|
}
|
|
else if( node->pkt->pkttype == PKT_SIGNATURE ) {
|
|
PKT_signature *sig = node->pkt->pkt.signature;
|
|
int rc2=0;
|
|
size_t n;
|
|
char *p;
|
|
int sigrc = ' ';
|
|
|
|
if( !opt.list_sigs )
|
|
return;
|
|
|
|
if( sig->sig_class == 0x20 || sig->sig_class == 0x30 )
|
|
fputs("rev", stdout);
|
|
else
|
|
fputs("sig", stdout);
|
|
if( opt.check_sigs ) {
|
|
fflush(stdout);
|
|
switch( (rc2=do_check_sig( c, node )) ) {
|
|
case 0: sigrc = '!'; break;
|
|
case G10ERR_BAD_SIGN: sigrc = '-'; break;
|
|
case G10ERR_NO_PUBKEY: sigrc = '?'; break;
|
|
default: sigrc = '%'; break;
|
|
}
|
|
}
|
|
if( opt.with_colons ) {
|
|
putchar(':');
|
|
if( sigrc != ' ' )
|
|
putchar(sigrc);
|
|
printf(":::%08lX%08lX:%s::::", (ulong)sig->keyid[0],
|
|
(ulong)sig->keyid[1], datestr_from_sig(sig));
|
|
}
|
|
else
|
|
printf("%c %08lX %s ",
|
|
sigrc, (ulong)sig->keyid[1], datestr_from_sig(sig));
|
|
if( sigrc == '%' )
|
|
printf("[%s] ", g10_errstr(rc2) );
|
|
else if( sigrc == '?' )
|
|
;
|
|
else {
|
|
p = get_user_id( sig->keyid, &n );
|
|
print_string( stdout, p, n, opt.with_colons );
|
|
m_free(p);
|
|
}
|
|
if( opt.with_colons )
|
|
printf(":%02x:", sig->sig_class );
|
|
putchar('\n');
|
|
}
|
|
else
|
|
log_error("invalid node with packet of type %d\n", node->pkt->pkttype);
|
|
}
|
|
|
|
|
|
int
|
|
proc_packets( IOBUF a )
|
|
{
|
|
CTX c = m_alloc_clear( sizeof *c );
|
|
int rc = do_proc_packets( c, a );
|
|
m_free( c );
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
proc_signature_packets( IOBUF a, STRLIST signedfiles )
|
|
{
|
|
CTX c = m_alloc_clear( sizeof *c );
|
|
int rc;
|
|
c->sigs_only = 1;
|
|
c->signed_data = signedfiles;
|
|
rc = do_proc_packets( c, a );
|
|
m_free( c );
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
proc_encryption_packets( IOBUF a )
|
|
{
|
|
CTX c = m_alloc_clear( sizeof *c );
|
|
int rc;
|
|
c->encrypt_only = 1;
|
|
rc = do_proc_packets( c, a );
|
|
m_free( c );
|
|
return rc;
|
|
}
|
|
|
|
|
|
int
|
|
do_proc_packets( CTX c, IOBUF a )
|
|
{
|
|
PACKET *pkt = m_alloc( sizeof *pkt );
|
|
int rc=0;
|
|
int newpkt;
|
|
|
|
c->iobuf = a;
|
|
init_packet(pkt);
|
|
while( (rc=parse_packet(a, pkt)) != -1 ) {
|
|
/* cleanup if we have an illegal data structure */
|
|
if( c->dek && pkt->pkttype != PKT_ENCRYPTED ) {
|
|
log_error("oops: valid pubkey enc packet not followed by data\n");
|
|
m_free(c->dek); c->dek = NULL; /* burn it */
|
|
}
|
|
|
|
if( rc ) {
|
|
free_packet(pkt);
|
|
if( rc == G10ERR_INVALID_PACKET )
|
|
break;
|
|
continue;
|
|
}
|
|
newpkt = -1;
|
|
if( opt.list_packets ) {
|
|
switch( pkt->pkttype ) {
|
|
case PKT_PUBKEY_ENC: proc_pubkey_enc( c, pkt ); break;
|
|
case PKT_ENCRYPTED: proc_encrypted( c, pkt ); break;
|
|
case PKT_COMPRESSED: proc_compressed( c, pkt ); break;
|
|
default: newpkt = 0; break;
|
|
}
|
|
}
|
|
else if( c->sigs_only ) {
|
|
switch( pkt->pkttype ) {
|
|
case PKT_PUBLIC_CERT:
|
|
case PKT_SECRET_CERT:
|
|
case PKT_USER_ID:
|
|
case PKT_SYMKEY_ENC:
|
|
case PKT_PUBKEY_ENC:
|
|
case PKT_ENCRYPTED:
|
|
rc = G10ERR_UNEXPECTED;
|
|
goto leave;
|
|
case PKT_SIGNATURE: newpkt = add_signature( c, pkt ); break;
|
|
case PKT_PLAINTEXT: proc_plaintext( c, pkt ); break;
|
|
case PKT_COMPRESSED: proc_compressed( c, pkt ); break;
|
|
case PKT_ONEPASS_SIG: newpkt = add_onepass_sig( c, pkt ); break;
|
|
default: newpkt = 0; break;
|
|
}
|
|
}
|
|
else if( c->encrypt_only ) {
|
|
switch( pkt->pkttype ) {
|
|
case PKT_PUBLIC_CERT:
|
|
case PKT_SECRET_CERT:
|
|
case PKT_USER_ID:
|
|
rc = G10ERR_UNEXPECTED;
|
|
goto leave;
|
|
case PKT_SIGNATURE: newpkt = add_signature( c, pkt ); break;
|
|
case PKT_SYMKEY_ENC: proc_symkey_enc( c, pkt ); break;
|
|
case PKT_PUBKEY_ENC: proc_pubkey_enc( c, pkt ); break;
|
|
case PKT_ENCRYPTED: proc_encrypted( c, pkt ); break;
|
|
case PKT_PLAINTEXT: proc_plaintext( c, pkt ); break;
|
|
case PKT_COMPRESSED: proc_compressed( c, pkt ); break;
|
|
case PKT_ONEPASS_SIG: newpkt = add_onepass_sig( c, pkt ); break;
|
|
default: newpkt = 0; break;
|
|
}
|
|
}
|
|
else {
|
|
switch( pkt->pkttype ) {
|
|
case PKT_PUBLIC_CERT:
|
|
case PKT_SECRET_CERT:
|
|
release_list( c );
|
|
c->list = new_kbnode( pkt );
|
|
newpkt = 1;
|
|
break;
|
|
case PKT_PUBKEY_SUBCERT:
|
|
case PKT_SECKEY_SUBCERT:
|
|
newpkt = add_subkey( c, pkt );
|
|
break;
|
|
case PKT_USER_ID: newpkt = add_user_id( c, pkt ); break;
|
|
case PKT_SIGNATURE: newpkt = add_signature( c, pkt ); break;
|
|
case PKT_PUBKEY_ENC: proc_pubkey_enc( c, pkt ); break;
|
|
case PKT_SYMKEY_ENC: proc_symkey_enc( c, pkt ); break;
|
|
case PKT_ENCRYPTED: proc_encrypted( c, pkt ); break;
|
|
case PKT_PLAINTEXT: proc_plaintext( c, pkt ); break;
|
|
case PKT_COMPRESSED: proc_compressed( c, pkt ); break;
|
|
case PKT_ONEPASS_SIG: newpkt = add_onepass_sig( c, pkt ); break;
|
|
default: newpkt = 0; break;
|
|
}
|
|
}
|
|
if( pkt->pkttype != PKT_SIGNATURE )
|
|
c->have_data = pkt->pkttype == PKT_PLAINTEXT;
|
|
|
|
if( newpkt == -1 )
|
|
;
|
|
else if( newpkt ) {
|
|
pkt = m_alloc( sizeof *pkt );
|
|
init_packet(pkt);
|
|
}
|
|
else
|
|
free_packet(pkt);
|
|
}
|
|
rc = 0;
|
|
|
|
leave:
|
|
release_list( c );
|
|
m_free(c->dek);
|
|
free_packet( pkt );
|
|
m_free( pkt );
|
|
free_md_filter_context( &c->mfx );
|
|
return rc;
|
|
}
|
|
|
|
|
|
static void
|
|
print_keyid( FILE *fp, u32 *keyid )
|
|
{
|
|
size_t n;
|
|
char *p = get_user_id( keyid, &n );
|
|
print_string( fp, p, n, opt.with_colons );
|
|
m_free(p);
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
check_sig_and_print( CTX c, KBNODE node )
|
|
{
|
|
PKT_signature *sig = node->pkt->pkt.signature;
|
|
int rc;
|
|
|
|
if( opt.skip_verify ) {
|
|
log_info("signature verification suppressed\n");
|
|
return 0;
|
|
}
|
|
|
|
rc = do_check_sig(c, node );
|
|
if( !rc || rc == G10ERR_BAD_SIGN ) {
|
|
char *p, *buf;
|
|
|
|
p = get_user_id_string( sig->keyid );
|
|
buf = m_alloc( 20 + strlen(p) );
|
|
sprintf(buf, "%lu %s", (ulong)sig->timestamp, p );
|
|
m_free(p);
|
|
if( (p=strchr(buf,'\n')) )
|
|
*p = 0; /* just in case ... */
|
|
write_status_text( rc? STATUS_BADSIG : STATUS_GOODSIG, buf );
|
|
m_free(buf);
|
|
log_info("%s signature from ", rc? "BAD":"Good");
|
|
print_keyid( stderr, sig->keyid );
|
|
putc('\n', stderr);
|
|
if( opt.batch && rc )
|
|
g10_exit(1);
|
|
}
|
|
else {
|
|
write_status( STATUS_ERRSIG );
|
|
log_error("Can't check signature made by %08lX: %s\n",
|
|
(ulong)sig->keyid[1], g10_errstr(rc) );
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
|
|
/****************
|
|
* Process the tree which starts at node
|
|
*/
|
|
static void
|
|
proc_tree( CTX c, KBNODE node )
|
|
{
|
|
KBNODE n1;
|
|
int rc;
|
|
|
|
if( opt.list_packets )
|
|
return;
|
|
|
|
if( node->pkt->pkttype == PKT_PUBLIC_CERT
|
|
|| node->pkt->pkttype == PKT_PUBKEY_SUBCERT )
|
|
list_node( c, node );
|
|
else if( node->pkt->pkttype == PKT_SECRET_CERT )
|
|
list_node( c, node );
|
|
else if( node->pkt->pkttype == PKT_ONEPASS_SIG ) {
|
|
/* check all signatures */
|
|
if( !c->have_data ) {
|
|
free_md_filter_context( &c->mfx );
|
|
/* prepare to create all requested message digests */
|
|
c->mfx.md = md_open(0, 0);
|
|
/* fixme: why looking for the signature packet and not 1passpacket*/
|
|
for( n1 = node; (n1 = find_next_kbnode(n1, PKT_SIGNATURE )); ) {
|
|
md_enable( c->mfx.md,
|
|
digest_algo_from_sig(n1->pkt->pkt.signature));
|
|
}
|
|
/* ask for file and hash it */
|
|
if( c->sigs_only )
|
|
rc = hash_datafiles( c->mfx.md, c->signed_data,
|
|
n1->pkt->pkt.onepass_sig->sig_class == 0x01 );
|
|
else
|
|
rc = ask_for_detached_datafile( &c->mfx,
|
|
iobuf_get_fname(c->iobuf));
|
|
if( rc ) {
|
|
log_error("can't hash datafile: %s\n", g10_errstr(rc));
|
|
return;
|
|
}
|
|
}
|
|
|
|
for( n1 = node; (n1 = find_next_kbnode(n1, PKT_SIGNATURE )); )
|
|
check_sig_and_print( c, n1 );
|
|
}
|
|
else if( node->pkt->pkttype == PKT_SIGNATURE ) {
|
|
PKT_signature *sig = node->pkt->pkt.signature;
|
|
|
|
if( !c->have_data ) {
|
|
free_md_filter_context( &c->mfx );
|
|
c->mfx.md = md_open(digest_algo_from_sig(sig), 0);
|
|
if( c->sigs_only )
|
|
rc = hash_datafiles( c->mfx.md, c->signed_data,
|
|
sig->sig_class == 0x01 );
|
|
else
|
|
rc = ask_for_detached_datafile( &c->mfx,
|
|
iobuf_get_fname(c->iobuf));
|
|
if( rc ) {
|
|
log_error("can't hash datafile: %s\n", g10_errstr(rc));
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
log_info("old style signature\n");
|
|
|
|
check_sig_and_print( c, node );
|
|
}
|
|
else
|
|
log_error("proc_tree: invalid root packet\n");
|
|
|
|
}
|
|
|
|
|
|
|