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static char rcsid[]="$Id$";
/*
* Copyright (C) 1998 Werner Koch <werner.koch@guug.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include "mutt.h"
#include "pgp.h"
/****************
* Read the GNUPG keys. For now we read the complete keyring by
* calling gnupg in a special mode.
*
* The output format of gpgm is colon delimited with these fields:
* - record type ("pub","uid","sig","rev" etc.)
* - trust info
* - key length
* - pubkey algo
* - 16 hex digits with the long keyid.
* - timestamp (1998-02-28)
* - Local id
* - ownertrust
* - name
* - signature class
*/
static KEYINFO *parse_pub_line( char *buf, int *is_subkey )
{
KEYINFO *k=NULL;
PGPUID *uid = NULL;
int field = 0;
char *pend, *p;
int trust = 0;
*is_subkey = 0;
if( !*buf )
return NULL;
for( p = buf; p; p = pend ) {
if( (pend = strchr(p, ':')) )
*pend++ = 0;
field++;
if( field > 1 && !*p )
continue;
switch( field ) {
case 1: /* record type */
if( !strcmp(p,"pub") )
;
else if( !strcmp(p,"sub") )
*is_subkey = 1;
else if( !strcmp(p,"sec") )
;
else if( !strcmp(p,"ssb") )
*is_subkey = 1;
else
return NULL;
k = safe_malloc( sizeof(KEYINFO) );
memset(k, 0, sizeof(KEYINFO) );
break;
case 2: /* trust info */
switch( *p ) { /* look only at the first letter */
case 'e': k->flags |= KEYFLAG_EXPIRED; break;
case 'n': trust = 1; break;
case 'm': trust = 2; break;
case 'f': trust = 3; break;
case 'u': trust = 3; break;
case 'r': k->flags |= KEYFLAG_REVOKED; break;
}
break;
case 3: /* key length */
k->keylen = atoi(p); /* fixme: add validation checks */
break;
case 4: /* pubkey algo */
k->algorithm = pgp_pkalgbytype(atoi(p));
k->flags |= pgp_get_abilities(atoi(p));
break;
case 5: /* 16 hex digits with the long keyid. */
/* We really should do a check here */
k->keyid = safe_strdup(p);
break;
case 6: /* timestamp (1998-02-28) */
break;
case 7: /* valid for n days */
break;
case 8: /* Local id */
break;
case 9: /* ownertrust */
break;
case 10: /* name */
if( !pend || !*p )
break; /* empty field or no trailing colon */
k->address = mutt_new_list();
k->address->data = safe_malloc( sizeof(PGPUID) );
uid = (PGPUID *)k->address->data;
uid->addr = safe_strdup(p);
uid->trust = trust;
break;
case 11: /* signature class */
break;
default:
break;
}
}
return k;
}
static pid_t gpg_invoke_list_keys(struct pgp_vinfo *pgp,
FILE **pgpin, FILE **pgpout, FILE **pgperr,
int pgpinfd, int pgpoutfd, int pgperrfd,
const char *uids, int secret)
{
char cmd[HUGE_STRING];
char tmpcmd[HUGE_STRING];
char *cp;
char *keylist;
/* we use gpgm here */
snprintf(cmd, sizeof(cmd),
"%sm --no-verbose --batch --with-colons --list-%skeys ",
NONULL(*pgp->binary), secret? "secret-":"");
keylist = safe_strdup(uids);
for(cp = strtok(keylist, " "); cp ; cp = strtok(NULL, " "))
{
snprintf(tmpcmd, sizeof(tmpcmd), "%s %s",
cmd, cp);
strcpy(cmd, tmpcmd);
}
safe_free((void **) &keylist);
return mutt_create_filter_fd(cmd, pgpin, pgpout, pgperr,
pgpinfd, pgpoutfd, pgperrfd);
}
static KEYINFO *read_ring(struct pgp_vinfo *pgp, int secret )
{
FILE *fp;
pid_t thepid;
char buf[LONG_STRING];
KEYINFO *db = NULL, **kend, *k = NULL, *kk, *mainkey=NULL;
int is_sub;
int devnull;
if((devnull = open("/dev/null", O_RDWR)) == -1)
return NULL;
thepid = gpg_invoke_list_keys(pgp, NULL, &fp, NULL, devnull, -1, devnull,
NULL, secret);
if( thepid == -1 )
{
close(devnull);
return NULL;
}
kend = &db;
k = NULL;
while( fgets( buf, sizeof(buf)-1, fp ) ) {
kk = parse_pub_line(buf, &is_sub );
if( !kk )
continue;
if( k )
kend = &k->next;
*kend = k = kk;
if( is_sub ) {
k->flags |= KEYFLAG_SUBKEY;
k->mainkey = mainkey;
}
else
mainkey = k;
}
if( ferror(fp) )
mutt_perror("fgets");
fclose( fp );
mutt_wait_filter( thepid );
close(devnull);
return db;
}
KEYINFO *gpg_read_pubring(struct pgp_vinfo *pgp)
{
return read_ring( pgp, 0 );
}
KEYINFO *gpg_read_secring(struct pgp_vinfo *pgp)
{
return read_ring( pgp, 1 );
}
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