mirror of git://git.gnupg.org/gnupg.git
333 lines
7.0 KiB
C
333 lines
7.0 KiB
C
/* kbxfile.c - KBX file handling
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* Copyright (C) 2000 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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/****************
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* We will change the whole system to use only KBX. This file here
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* will implement the methods needed to operate on plain KBXfiles.
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* Most stuff from getkey and ringedit will be replaced by stuff here.
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* To make things even more easier we will only allow one updateable kbxfile
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* and optionally some read-only files.
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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 <gcrypt.h>
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#include "kbx.h"
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#include "options.h"
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#include "util.h"
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#include "i18n.h"
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#include "main.h"
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/****************
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* Read the blob at the current fileposition and return an allocated
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* pointer nto the blob if it was found.
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* Fixme: return a blob object.
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*/
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static int
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do_search_by_fpr ( const char *filename, FILE *a, const char *fpr,
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KBXBLOB *r_blob )
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{
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KBXBLOB blob;
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int rc;
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*r_blob = NULL;
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rc = kbx_read_blob ( &blob, a );
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if ( rc && rc != -1 ) {
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log_error (_("file `%s': error reading blob\n"), filename );
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}
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else if ( !rc ) {
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rc = kbx_blob_has_fpr ( blob, fpr );
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}
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else
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log_info ("eof\n");
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if ( !rc ) {
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*r_blob = blob;
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}
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else {
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kbx_release_blob ( blob );
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}
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return rc;
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}
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int
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kbxfile_search_by_fpr( const char *filename, const byte *fpr )
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{
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FILE *fp;
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KBXBLOB blob;
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int rc;
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fp = fopen ( filename, "rb" );
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if( !fp ) {
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log_error(_("can't open `%s': %s\n"), filename, strerror(errno) );
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return 1;
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}
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while ( (rc=do_search_by_fpr ( filename, fp, fpr, &blob )) == -1 )
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;
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if ( !rc ) {
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fputs ("FOUND\n", stderr );
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kbx_dump_blob ( stderr, blob );
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kbx_release_blob ( blob );
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}
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fclose (fp);
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return -1;
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}
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/****************
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* Read the blob at the current fileposition and return an allocated
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* pointer nto the blob if it was found.
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* Fixme: return a blob object.
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*/
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static int
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do_search_by_keyid ( const char *filename, FILE *a,
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const byte *keyidbuf, size_t keyidlen, KBXBLOB *r_blob )
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{
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KBXBLOB blob;
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int rc;
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*r_blob = NULL;
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rc = kbx_read_blob ( &blob, a );
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if ( rc && rc != -1 ) {
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log_error (_("file `%s': error reading blob\n"), filename );
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}
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else if ( !rc ) {
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rc = kbx_blob_has_kid ( blob, keyidbuf, keyidlen );
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}
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else
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rc = GPGERR_GENERAL; /* eof */
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if ( !rc ) {
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*r_blob = blob;
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}
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else {
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kbx_release_blob ( blob );
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}
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return rc;
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}
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/****************
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* Look for a KBX described by an keyid. This function will in
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* turn return each matching keyid because there may me duplicates
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* (which can't happen for fingerprints)
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* mode 10 = short keyid
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* 11 = long keyid
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*/
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int
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kbxfile_search_by_kid ( const char *filename, u32 *kid, int mode )
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{
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FILE *fp;
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KBXBLOB blob;
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int rc;
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byte kbuf[8], *kbufptr;
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int kbuflen;
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fp = fopen ( filename, "rb" );
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if( !fp ) {
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log_error(_("can't open `%s': %s\n"), filename, strerror(errno) );
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return 1;
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}
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kbuf[0] = kid[0] >> 24;
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kbuf[1] = kid[0] >> 16;
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kbuf[2] = kid[0] >> 8;
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kbuf[3] = kid[0];
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kbuf[4] = kid[1] >> 24;
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kbuf[5] = kid[1] >> 16;
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kbuf[6] = kid[1] >> 8;
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kbuf[7] = kid[1];
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if ( mode == 10 ) {
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kbufptr=kbuf+4;
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kbuflen = 4;
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}
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else if (mode == 11 ) {
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kbufptr=kbuf;
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kbuflen = 8;
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}
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else {
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BUG();
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}
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do {
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while ( (rc=do_search_by_keyid ( filename, fp,
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kbufptr, kbuflen, &blob )) == -1 )
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;
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if ( !rc ) {
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fputs ("FOUND:\n", stderr );
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kbx_dump_blob ( stderr, blob );
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kbx_release_blob ( blob );
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}
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} while ( !rc );
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fclose (fp);
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return -1;
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}
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static int
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do_search_by_uid ( const char *filename, FILE *a,
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int (*cmpfnc)(const byte*,size_t,void*), void *cmpdata,
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KBXBLOB *r_blob )
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{
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KBXBLOB blob;
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int rc;
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*r_blob = NULL;
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rc = kbx_read_blob ( &blob, a );
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if ( rc && rc != -1 ) {
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log_error (_("file `%s': error reading blob\n"), filename );
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}
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else if ( !rc ) {
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rc = kbx_blob_has_uid ( blob, cmpfnc, cmpdata );
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}
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else
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rc = GPGERR_GENERAL; /* eof */
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if ( !rc ) {
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*r_blob = blob;
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}
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else {
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kbx_release_blob ( blob );
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}
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return rc;
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}
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static int
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substr_compare ( const byte *buf, size_t buflen, void *opaque )
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{
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return !!memistr ( buf, buflen, opaque );
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}
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int
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kbxfile_search_by_uid ( const char *filename, const char *name )
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{
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FILE *fp;
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KBXBLOB blob;
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int rc;
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byte kbuf[8], *kbufptr;
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int kbuflen;
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fp = fopen ( filename, "rb" );
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if( !fp ) {
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log_error(_("can't open `%s': %s\n"), filename, strerror(errno) );
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return 1;
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}
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do {
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while ( (rc=do_search_by_uid ( filename, fp,
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substr_compare, name, &blob )) == -1 )
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;
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if ( !rc ) {
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fputs ("FOUND:\n", stderr );
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kbx_dump_blob ( stderr, blob );
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kbx_release_blob ( blob );
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}
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} while ( !rc );
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fclose ( fp );
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return -1;
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}
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void
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export_as_kbxfile(void)
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{
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KBPOS kbpos;
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KBNODE keyblock = NULL;
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int rc=0;
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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", gpg_errstr(rc) );
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goto leave;
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}
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while( !(rc = enum_keyblocks( 1, &kbpos, &keyblock )) ) {
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KBXBLOB blob;
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const char *p;
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size_t n;
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merge_keys_and_selfsig( keyblock );
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rc = kbx_create_blob ( &blob, keyblock );
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if( rc ) {
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log_error("kbx_create_blob failed: %s\n", gpg_errstr(rc) );
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goto leave;
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}
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p = kbx_get_blob_image ( blob, &n );
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fwrite( p, n, 1, stdout );
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kbx_release_blob ( blob );
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}
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if( rc && rc != -1 )
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log_error("enum_keyblocks(read) failed: %s\n", gpg_errstr(rc));
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leave:
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enum_keyblocks( 2, &kbpos, &keyblock ); /* close */
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release_kbnode( keyblock );
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}
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static int
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do_print_kbxfile( const char *filename, FILE *a )
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{
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KBXBLOB blob;
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int rc;
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rc = kbx_read_blob ( &blob, a );
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if ( rc && rc != -1 ) {
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log_error (_("file `%s': error reading blob\n"), filename );
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}
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else if ( ! rc )
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kbx_dump_blob ( stdout, blob );
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kbx_release_blob ( blob );
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return rc;
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}
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void
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print_kbxfile( const char *filename )
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{
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FILE *fp;
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fp = fopen ( filename, "rb" );
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if( !fp ) {
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log_error(_("can't open `%s': %s\n"), filename, strerror(errno) );
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return;
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}
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while ( !do_print_kbxfile( filename, fp ) )
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;
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fclose (fp);
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}
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