mirror of
git://git.gnupg.org/gnupg.git
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140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
/* export.c
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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 <errno.h>
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#include <assert.h>
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#include "options.h"
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#include "packet.h"
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#include "errors.h"
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#include "keydb.h"
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#include "memory.h"
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#include "util.h"
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#include "main.h"
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/****************
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* Export the public keys (to standard out or --output).
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* Depending on opt.armor the output is armored.
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* If USERS is NULL, the complete ring will be exported.
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*/
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int
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export_pubkeys( STRLIST users )
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{
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int rc = 0;
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armor_filter_context_t afx;
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compress_filter_context_t zfx;
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IOBUF out = NULL;
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PACKET pkt;
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KBNODE keyblock = NULL;
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KBNODE kbctx, node;
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KBPOS kbpos;
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STRLIST sl;
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int all = !users;
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int any=0;
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memset( &afx, 0, sizeof afx);
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memset( &zfx, 0, sizeof zfx);
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init_packet( &pkt );
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if( !(out = open_outfile( NULL, 0 )) ) {
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rc = G10ERR_CREATE_FILE;
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goto leave;
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}
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if( opt.armor ) {
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afx.what = 1;
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iobuf_push_filter( out, armor_filter, &afx );
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}
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if( opt.compress )
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iobuf_push_filter( out, compress_filter, &zfx );
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if( all ) {
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rc = enum_keyblocks( 0, &kbpos, &keyblock );
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if( rc ) {
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if( rc != -1 )
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log_error("enum_keyblocks(open) failed: %s\n", g10_errstr(rc) );
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goto leave;
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}
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all = 2;
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}
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/* use the correct sequence. strlist_last,prev do work correctly with
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* NULL pointers :-) */
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for( sl=strlist_last(users); sl || all ; sl=strlist_prev( users, sl )) {
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if( all ) { /* get the next user */
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rc = enum_keyblocks( 1, &kbpos, &keyblock );
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if( rc == -1 ) /* EOF */
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break;
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if( rc ) {
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log_error("enum_keyblocks(read) failed: %s\n", g10_errstr(rc));
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break;
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}
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}
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else {
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/* search the userid */
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rc = find_keyblock_byname( &kbpos, sl->d );
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if( rc ) {
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log_error("%s: user not found: %s\n", sl->d, g10_errstr(rc) );
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rc = 0;
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continue;
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}
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/* read the keyblock */
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rc = read_keyblock( &kbpos, &keyblock );
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}
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if( rc ) {
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log_error("certificate read problem: %s\n", g10_errstr(rc));
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goto leave;
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}
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/* and write it */
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for( kbctx=NULL; (node = walk_kbnode( keyblock, &kbctx, 0 )); ) {
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if( (rc = build_packet( out, node->pkt )) ) {
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log_error("build_packet(%d) failed: %s\n",
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node->pkt->pkttype, g10_errstr(rc) );
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rc = G10ERR_WRITE_FILE;
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goto leave;
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}
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}
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any++;
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}
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if( rc == -1 )
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rc = 0;
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leave:
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if( all == 2 )
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enum_keyblocks( 2, &kbpos, &keyblock ); /* close */
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release_kbnode( keyblock );
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if( rc || !any )
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iobuf_cancel(out);
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else
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iobuf_close(out);
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if( !any )
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log_info("warning: nothing exported\n");
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return rc;
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}
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