mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-10 21:38:50 +01:00
317 lines
7.0 KiB
C
317 lines
7.0 KiB
C
/* kbnode.c - keyblock node utility functions
|
|
* Copyright (C) 1998 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GNUPG.
|
|
*
|
|
* GNUPG 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.
|
|
*
|
|
* GNUPG 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include "util.h"
|
|
#include "memory.h"
|
|
#include "packet.h"
|
|
#include "keydb.h"
|
|
|
|
#define USE_UNUSED_NODES 1
|
|
|
|
static KBNODE unused_nodes;
|
|
|
|
KBNODE
|
|
new_kbnode( PACKET *pkt )
|
|
{
|
|
KBNODE n;
|
|
|
|
n = unused_nodes;
|
|
if( n )
|
|
unused_nodes = n->next;
|
|
else
|
|
n = m_alloc( sizeof *n );
|
|
n->next = NULL;
|
|
n->pkt = pkt;
|
|
n->flag = 0;
|
|
n->private_flag=0;
|
|
return n;
|
|
}
|
|
|
|
|
|
KBNODE
|
|
clone_kbnode( KBNODE node )
|
|
{
|
|
KBNODE n;
|
|
|
|
n = unused_nodes;
|
|
if( n )
|
|
unused_nodes = n->next;
|
|
else
|
|
n = m_alloc( sizeof *n );
|
|
n->next = NULL;
|
|
n->pkt = node->pkt;
|
|
n->flag = 0;
|
|
n->private_flag = node->private_flag | 2; /* mark cloned */
|
|
return n;
|
|
}
|
|
|
|
|
|
void
|
|
release_kbnode( KBNODE n )
|
|
{
|
|
KBNODE n2;
|
|
|
|
while( n ) {
|
|
n2 = n->next;
|
|
if( !(n->private_flag & 2) ) {
|
|
free_packet( n->pkt );
|
|
m_free( n->pkt );
|
|
}
|
|
#if USE_UNUSED_NODES
|
|
n->next = unused_nodes;
|
|
unused_nodes = n;
|
|
#else
|
|
m_free( n );
|
|
#endif
|
|
n = n2;
|
|
}
|
|
}
|
|
|
|
|
|
/****************
|
|
* Delete NODE from ROOT. ROOT must exist!
|
|
* Note: This only works with walk_kbnode!!
|
|
*/
|
|
void
|
|
delete_kbnode( KBNODE node )
|
|
{
|
|
node->private_flag |= 1;
|
|
}
|
|
|
|
|
|
/****************
|
|
* Append NODE to ROOT. ROOT must exist!
|
|
*/
|
|
void
|
|
add_kbnode( KBNODE root, KBNODE node )
|
|
{
|
|
KBNODE n1;
|
|
|
|
for(n1=root; n1->next; n1 = n1->next)
|
|
;
|
|
n1->next = node;
|
|
}
|
|
|
|
/****************
|
|
* Insert NODE into the list after root but before a packet which is not of
|
|
* type PKTTYPE
|
|
* (only if PKTTYPE != 0)
|
|
*/
|
|
void
|
|
insert_kbnode( KBNODE root, KBNODE node, int pkttype )
|
|
{
|
|
if( !pkttype ) {
|
|
node->next = root->next;
|
|
root->next = node;
|
|
}
|
|
else {
|
|
KBNODE n1;
|
|
|
|
for(n1=root; n1->next; n1 = n1->next)
|
|
if( pkttype != n1->next->pkt->pkttype ) {
|
|
node->next = n1->next;
|
|
n1->next = node;
|
|
return;
|
|
}
|
|
/* no such packet, append */
|
|
node->next = NULL;
|
|
n1->next = node;
|
|
}
|
|
}
|
|
|
|
|
|
/****************
|
|
* Find the previous node (if PKTTYPE = 0) or the previous node
|
|
* with pkttype PKTTYPE in the list starting with ROOT of NODE.
|
|
*/
|
|
KBNODE
|
|
find_prev_kbnode( KBNODE root, KBNODE node, int pkttype )
|
|
{
|
|
KBNODE n1;
|
|
|
|
for(n1=NULL ; root && root != node; root = root->next )
|
|
if( !pkttype || root->pkt->pkttype == pkttype )
|
|
n1 = root;
|
|
return n1;
|
|
}
|
|
|
|
/****************
|
|
* Ditto, but find the next packet. The behaviour is trivial if
|
|
* PKTTYPE is 0 but if it is specified, the next node with a packet
|
|
* of this type is returned. The function has some knowledge about
|
|
* the valid ordering of packets: e.g. if the next signature packet
|
|
* is requested, the function will not return one if it encounters
|
|
* a user-id.
|
|
*/
|
|
KBNODE
|
|
find_next_kbnode( KBNODE node, int pkttype )
|
|
{
|
|
for( node=node->next ; node; node = node->next ) {
|
|
if( !pkttype )
|
|
return node;
|
|
else if( pkttype == PKT_USER_ID
|
|
&& ( node->pkt->pkttype == PKT_PUBLIC_KEY
|
|
|| node->pkt->pkttype == PKT_SECRET_KEY ) )
|
|
return NULL;
|
|
else if( pkttype == PKT_SIGNATURE
|
|
&& ( node->pkt->pkttype == PKT_USER_ID
|
|
|| node->pkt->pkttype == PKT_PUBLIC_KEY
|
|
|| node->pkt->pkttype == PKT_SECRET_KEY ) )
|
|
return NULL;
|
|
else if( node->pkt->pkttype == pkttype )
|
|
return node;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
KBNODE
|
|
find_kbnode( KBNODE node, int pkttype )
|
|
{
|
|
for( ; node; node = node->next ) {
|
|
if( node->pkt->pkttype == pkttype )
|
|
return node;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
/****************
|
|
* Walk through a list of kbnodes. This function returns
|
|
* the next kbnode for each call; before using the function the first
|
|
* time, the caller must set CONTEXT to NULL (This has simply the effect
|
|
* to start with ROOT).
|
|
*/
|
|
KBNODE
|
|
walk_kbnode( KBNODE root, KBNODE *context, int all )
|
|
{
|
|
KBNODE n;
|
|
|
|
do {
|
|
if( !*context ) {
|
|
*context = root;
|
|
n = root;
|
|
}
|
|
else {
|
|
n = (*context)->next;
|
|
*context = n;
|
|
}
|
|
} while( !all && n && (n->private_flag & 1) );
|
|
|
|
return n;
|
|
}
|
|
|
|
void
|
|
clear_kbnode_flags( KBNODE n )
|
|
{
|
|
for( ; n; n = n->next ) {
|
|
n->flag = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/****************
|
|
* Commit changes made to the kblist at ROOT. Note that ROOT my change,
|
|
* and it is therefore passed by reference.
|
|
* The function has the effect of removing all nodes marked as deleted.
|
|
* returns true if any node has been changed
|
|
*/
|
|
int
|
|
commit_kbnode( KBNODE *root )
|
|
{
|
|
KBNODE n, nl;
|
|
int changed = 0;
|
|
|
|
for( n = *root, nl=NULL; n; n = nl->next ) {
|
|
if( (n->private_flag & 1) ) {
|
|
if( n == *root )
|
|
*root = nl = n->next;
|
|
else
|
|
nl->next = n->next;
|
|
if( !(n->private_flag & 2) ) {
|
|
free_packet( n->pkt );
|
|
m_free( n->pkt );
|
|
}
|
|
#if USE_UNUSED_NODES
|
|
n->next = unused_nodes;
|
|
unused_nodes = n;
|
|
#else
|
|
m_free( n );
|
|
#endif
|
|
changed = 1;
|
|
}
|
|
else
|
|
nl = n;
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
|
|
void
|
|
dump_kbnode( KBNODE node )
|
|
{
|
|
for(; node; node = node->next ) {
|
|
const char *s;
|
|
switch( node->pkt->pkttype ) {
|
|
case 0: s="empty"; break;
|
|
case PKT_PUBLIC_KEY: s="public-key"; break;
|
|
case PKT_SECRET_KEY: s="secret-key"; break;
|
|
case PKT_SECRET_SUBKEY: s= "secret-subkey"; break;
|
|
case PKT_PUBKEY_ENC: s="public-enc"; break;
|
|
case PKT_SIGNATURE: s="signature"; break;
|
|
case PKT_ONEPASS_SIG: s="onepass-sig"; break;
|
|
case PKT_USER_ID: s="user-id"; break;
|
|
case PKT_PUBLIC_SUBKEY: s="public-subkey"; break;
|
|
case PKT_COMMENT: s="comment"; break;
|
|
case PKT_RING_TRUST: s="trust"; break;
|
|
case PKT_PLAINTEXT: s="plaintext"; break;
|
|
case PKT_COMPRESSED: s="compressed"; break;
|
|
case PKT_ENCRYPTED: s="encrypted"; break;
|
|
default: s="unknown"; break;
|
|
}
|
|
fprintf(stderr, "node %p %02x/%02x type=%s",
|
|
node, node->flag, node->private_flag, s);
|
|
if( node->pkt->pkttype == PKT_USER_ID ) {
|
|
fputs(" \"", stderr);
|
|
print_string( stderr, node->pkt->pkt.user_id->name,
|
|
node->pkt->pkt.user_id->len, 0 );
|
|
fputs("\"\n", stderr);
|
|
}
|
|
else if( node->pkt->pkttype == PKT_SIGNATURE ) {
|
|
fprintf(stderr, " keyid=%08lX\n",
|
|
(ulong)node->pkt->pkt.signature->keyid[1] );
|
|
}
|
|
else if( node->pkt->pkttype == PKT_PUBLIC_KEY
|
|
|| node->pkt->pkttype == PKT_PUBLIC_SUBKEY ) {
|
|
fprintf(stderr, " keyid=%08lX\n", (ulong)
|
|
keyid_from_pk( node->pkt->pkt.public_key, NULL ));
|
|
}
|
|
else
|
|
fputs("\n", stderr);
|
|
}
|
|
}
|
|
|