mirror of git://git.gnupg.org/gnupg.git
432 lines
9.7 KiB
C
432 lines
9.7 KiB
C
/* kbnode.c - keyblock node utility functions
|
|
* Copyright (C) 1998, 1999, 2000, 2001, 2002,
|
|
* 2005, 2010 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 3 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, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "gpg.h"
|
|
#include "../common/util.h"
|
|
#include "../common/init.h"
|
|
#include "packet.h"
|
|
#include "keydb.h"
|
|
|
|
#define USE_UNUSED_NODES 1
|
|
|
|
static int cleanup_registered;
|
|
static KBNODE unused_nodes;
|
|
|
|
static void
|
|
release_unused_nodes (void)
|
|
{
|
|
#if USE_UNUSED_NODES
|
|
while (unused_nodes)
|
|
{
|
|
kbnode_t next = unused_nodes->next;
|
|
xfree (unused_nodes);
|
|
unused_nodes = next;
|
|
}
|
|
#endif /*USE_UNUSED_NODES*/
|
|
}
|
|
|
|
|
|
static kbnode_t
|
|
alloc_node (void)
|
|
{
|
|
kbnode_t n;
|
|
|
|
n = unused_nodes;
|
|
if (n)
|
|
unused_nodes = n->next;
|
|
else
|
|
{
|
|
if (!cleanup_registered)
|
|
{
|
|
cleanup_registered = 1;
|
|
register_mem_cleanup_func (release_unused_nodes);
|
|
}
|
|
n = xmalloc (sizeof *n);
|
|
}
|
|
n->next = NULL;
|
|
n->pkt = NULL;
|
|
n->flag = 0;
|
|
n->tag = 0;
|
|
n->private_flag=0;
|
|
return n;
|
|
}
|
|
|
|
static void
|
|
free_node( KBNODE n )
|
|
{
|
|
if (n)
|
|
{
|
|
#if USE_UNUSED_NODES
|
|
n->next = unused_nodes;
|
|
unused_nodes = n;
|
|
#else
|
|
xfree (n);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
|
|
KBNODE
|
|
new_kbnode( PACKET *pkt )
|
|
{
|
|
KBNODE n = alloc_node();
|
|
n->pkt = pkt;
|
|
return n;
|
|
}
|
|
|
|
|
|
KBNODE
|
|
clone_kbnode( KBNODE node )
|
|
{
|
|
KBNODE n = alloc_node();
|
|
|
|
n->pkt = node->pkt;
|
|
n->private_flag = node->private_flag | 2; /* mark cloned */
|
|
return n;
|
|
}
|
|
|
|
|
|
void
|
|
release_kbnode( KBNODE n )
|
|
{
|
|
KBNODE n2;
|
|
|
|
while( n ) {
|
|
n2 = n->next;
|
|
if( !is_cloned_kbnode(n) ) {
|
|
free_packet (n->pkt, NULL);
|
|
xfree( n->pkt );
|
|
}
|
|
free_node( n );
|
|
n = n2;
|
|
}
|
|
}
|
|
|
|
|
|
/****************
|
|
* Delete NODE.
|
|
* 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 && is_deleted_kbnode(n) );
|
|
|
|
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( is_deleted_kbnode(n) ) {
|
|
if( n == *root )
|
|
*root = nl = n->next;
|
|
else
|
|
nl->next = n->next;
|
|
if( !is_cloned_kbnode(n) ) {
|
|
free_packet (n->pkt, NULL);
|
|
xfree( n->pkt );
|
|
}
|
|
free_node( n );
|
|
changed = 1;
|
|
}
|
|
else
|
|
nl = n;
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
void
|
|
remove_kbnode( KBNODE *root, KBNODE node )
|
|
{
|
|
KBNODE n, nl;
|
|
|
|
for( n = *root, nl=NULL; n; n = nl->next ) {
|
|
if( n == node ) {
|
|
if( n == *root )
|
|
*root = nl = n->next;
|
|
else
|
|
nl->next = n->next;
|
|
if( !is_cloned_kbnode(n) ) {
|
|
free_packet (n->pkt, NULL);
|
|
xfree( n->pkt );
|
|
}
|
|
free_node( n );
|
|
}
|
|
else
|
|
nl = n;
|
|
}
|
|
}
|
|
|
|
|
|
/****************
|
|
* Move NODE behind right after WHERE or to the beginning if WHERE is NULL.
|
|
*/
|
|
void
|
|
move_kbnode( KBNODE *root, KBNODE node, KBNODE where )
|
|
{
|
|
KBNODE tmp, prev;
|
|
|
|
if( !root || !*root || !node )
|
|
return; /* sanity check */
|
|
for( prev = *root; prev && prev->next != node; prev = prev->next )
|
|
;
|
|
if( !prev )
|
|
return; /* node is not in the list */
|
|
|
|
if( !where ) { /* move node before root */
|
|
if( node == *root ) /* move to itself */
|
|
return;
|
|
prev->next = node->next;
|
|
node->next = *root;
|
|
*root = node;
|
|
return;
|
|
}
|
|
/* move it after where */
|
|
if( node == where )
|
|
return;
|
|
tmp = node->next;
|
|
node->next = where->next;
|
|
where->next = node;
|
|
prev->next = tmp;
|
|
}
|
|
|
|
|
|
|
|
|
|
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;
|
|
case PKT_GPG_CONTROL: s="gpg-control"; break;
|
|
default: s="unknown"; break;
|
|
}
|
|
log_debug ("node %p %02x/%02x type=%s",
|
|
node, node->flag, node->private_flag, s);
|
|
if (node->pkt->pkttype == PKT_USER_ID)
|
|
{
|
|
PKT_user_id *uid = node->pkt->pkt.user_id;
|
|
log_printf (" \"");
|
|
es_write_sanitized (log_get_stream (), uid->name, uid->len,
|
|
NULL, NULL);
|
|
log_printf ("\" %c%c%c%c\n",
|
|
uid->flags.expired? 'e':'.',
|
|
uid->flags.revoked? 'r':'.',
|
|
uid->created? 'v':'.',
|
|
uid->flags.primary? 'p':'.' );
|
|
}
|
|
else if (node->pkt->pkttype == PKT_SIGNATURE)
|
|
{
|
|
log_printf (" class=%02x keyid=%08lX ts=%lu\n",
|
|
node->pkt->pkt.signature->sig_class,
|
|
(ulong)node->pkt->pkt.signature->keyid[1],
|
|
(ulong)node->pkt->pkt.signature->timestamp);
|
|
}
|
|
else if (node->pkt->pkttype == PKT_GPG_CONTROL)
|
|
{
|
|
log_printf (" ctrl=%d len=%u\n",
|
|
node->pkt->pkt.gpg_control->control,
|
|
(unsigned int)node->pkt->pkt.gpg_control->datalen);
|
|
}
|
|
else if (node->pkt->pkttype == PKT_PUBLIC_KEY
|
|
|| node->pkt->pkttype == PKT_PUBLIC_SUBKEY)
|
|
{
|
|
PKT_public_key *pk = node->pkt->pkt.public_key;
|
|
|
|
log_printf (" keyid=%08lX a=%d u=%d %c%c%c%c\n",
|
|
(ulong)keyid_from_pk( pk, NULL ),
|
|
pk->pubkey_algo, pk->pubkey_usage,
|
|
pk->has_expired? 'e':'.',
|
|
pk->flags.revoked? 'r':'.',
|
|
pk->flags.valid? 'v':'.',
|
|
pk->flags.mdc? 'm':'.');
|
|
}
|
|
else
|
|
log_printf ("\n");
|
|
|
|
log_flush ();
|
|
}
|
|
}
|