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b008274afd
We better do this once and for all instead of cluttering all future commits with diffs of trailing white spaces. In the majority of cases blank or single lines are affected and thus this change won't disturb a git blame too much. For future commits the pre-commit scripts checks that this won't happen again.
407 lines
9.1 KiB
C
407 lines
9.1 KiB
C
/* kbnode.c - keyblock node utility functions
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* Copyright (C) 1998, 1999, 2000, 2001, 2002,
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* 2005, 2010 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 3 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, see <http://www.gnu.org/licenses/>.
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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 <assert.h>
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#include "gpg.h"
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#include "util.h"
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#include "packet.h"
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#include "keydb.h"
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#define USE_UNUSED_NODES 1
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static KBNODE unused_nodes;
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static KBNODE
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alloc_node(void)
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{
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KBNODE n;
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n = unused_nodes;
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if( n )
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unused_nodes = n->next;
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else
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n = xmalloc( sizeof *n );
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n->next = NULL;
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n->pkt = NULL;
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n->flag = 0;
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n->private_flag=0;
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n->recno = 0;
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return n;
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}
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static void
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free_node( KBNODE n )
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{
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if( n ) {
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#if USE_UNUSED_NODES
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n->next = unused_nodes;
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unused_nodes = n;
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#else
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xfree( n );
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#endif
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}
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}
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KBNODE
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new_kbnode( PACKET *pkt )
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{
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KBNODE n = alloc_node();
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n->pkt = pkt;
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return n;
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}
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KBNODE
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clone_kbnode( KBNODE node )
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{
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KBNODE n = alloc_node();
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n->pkt = node->pkt;
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n->private_flag = node->private_flag | 2; /* mark cloned */
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return n;
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}
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void
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release_kbnode( KBNODE n )
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{
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KBNODE n2;
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while( n ) {
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n2 = n->next;
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if( !is_cloned_kbnode(n) ) {
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free_packet( n->pkt );
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xfree( n->pkt );
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}
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free_node( n );
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n = n2;
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}
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}
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/****************
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* Delete NODE.
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* Note: This only works with walk_kbnode!!
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*/
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void
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delete_kbnode( KBNODE node )
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{
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node->private_flag |= 1;
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}
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/****************
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* Append NODE to ROOT. ROOT must exist!
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*/
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void
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add_kbnode( KBNODE root, KBNODE node )
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{
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KBNODE n1;
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for(n1=root; n1->next; n1 = n1->next)
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;
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n1->next = node;
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}
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/****************
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* Insert NODE into the list after root but before a packet which is not of
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* type PKTTYPE
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* (only if PKTTYPE != 0)
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*/
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void
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insert_kbnode( KBNODE root, KBNODE node, int pkttype )
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{
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if( !pkttype ) {
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node->next = root->next;
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root->next = node;
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}
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else {
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KBNODE n1;
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for(n1=root; n1->next; n1 = n1->next)
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if( pkttype != n1->next->pkt->pkttype ) {
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node->next = n1->next;
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n1->next = node;
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return;
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}
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/* no such packet, append */
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node->next = NULL;
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n1->next = node;
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}
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}
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/****************
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* Find the previous node (if PKTTYPE = 0) or the previous node
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* with pkttype PKTTYPE in the list starting with ROOT of NODE.
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*/
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KBNODE
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find_prev_kbnode( KBNODE root, KBNODE node, int pkttype )
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{
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KBNODE n1;
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for (n1=NULL; root && root != node; root = root->next ) {
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if (!pkttype ||root->pkt->pkttype == pkttype)
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n1 = root;
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}
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return n1;
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}
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/****************
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* Ditto, but find the next packet. The behaviour is trivial if
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* PKTTYPE is 0 but if it is specified, the next node with a packet
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* of this type is returned. The function has some knowledge about
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* the valid ordering of packets: e.g. if the next signature packet
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* is requested, the function will not return one if it encounters
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* a user-id.
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*/
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KBNODE
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find_next_kbnode( KBNODE node, int pkttype )
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{
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for( node=node->next ; node; node = node->next ) {
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if( !pkttype )
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return node;
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else if( pkttype == PKT_USER_ID
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&& ( node->pkt->pkttype == PKT_PUBLIC_KEY
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|| node->pkt->pkttype == PKT_SECRET_KEY ) )
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return NULL;
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else if( pkttype == PKT_SIGNATURE
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&& ( node->pkt->pkttype == PKT_USER_ID
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|| node->pkt->pkttype == PKT_PUBLIC_KEY
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|| node->pkt->pkttype == PKT_SECRET_KEY ) )
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return NULL;
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else if( node->pkt->pkttype == pkttype )
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return node;
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}
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return NULL;
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}
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KBNODE
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find_kbnode( KBNODE node, int pkttype )
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{
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for( ; node; node = node->next ) {
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if( node->pkt->pkttype == pkttype )
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return node;
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}
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return NULL;
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}
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/****************
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* Walk through a list of kbnodes. This function returns
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* the next kbnode for each call; before using the function the first
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* time, the caller must set CONTEXT to NULL (This has simply the effect
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* to start with ROOT).
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*/
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KBNODE
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walk_kbnode( KBNODE root, KBNODE *context, int all )
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{
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KBNODE n;
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do {
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if( !*context ) {
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*context = root;
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n = root;
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}
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else {
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n = (*context)->next;
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*context = n;
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}
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} while( !all && n && is_deleted_kbnode(n) );
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return n;
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}
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void
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clear_kbnode_flags( KBNODE n )
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{
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for( ; n; n = n->next ) {
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n->flag = 0;
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}
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}
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/****************
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* Commit changes made to the kblist at ROOT. Note that ROOT my change,
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* and it is therefore passed by reference.
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* The function has the effect of removing all nodes marked as deleted.
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* returns true if any node has been changed
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*/
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int
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commit_kbnode( KBNODE *root )
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{
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KBNODE n, nl;
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int changed = 0;
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for( n = *root, nl=NULL; n; n = nl->next ) {
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if( is_deleted_kbnode(n) ) {
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if( n == *root )
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*root = nl = n->next;
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else
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nl->next = n->next;
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if( !is_cloned_kbnode(n) ) {
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free_packet( n->pkt );
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xfree( n->pkt );
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}
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free_node( n );
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changed = 1;
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}
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else
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nl = n;
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}
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return changed;
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}
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void
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remove_kbnode( KBNODE *root, KBNODE node )
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{
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KBNODE n, nl;
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for( n = *root, nl=NULL; n; n = nl->next ) {
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if( n == node ) {
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if( n == *root )
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*root = nl = n->next;
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else
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nl->next = n->next;
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if( !is_cloned_kbnode(n) ) {
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free_packet( n->pkt );
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xfree( n->pkt );
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}
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free_node( n );
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}
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else
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nl = n;
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}
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}
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/****************
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* Move NODE behind right after WHERE or to the beginning if WHERE is NULL.
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*/
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void
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move_kbnode( KBNODE *root, KBNODE node, KBNODE where )
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{
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KBNODE tmp, prev;
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if( !root || !*root || !node )
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return; /* sanity check */
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for( prev = *root; prev && prev->next != node; prev = prev->next )
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;
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if( !prev )
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return; /* node is not in the list */
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if( !where ) { /* move node before root */
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if( node == *root ) /* move to itself */
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return;
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prev->next = node->next;
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node->next = *root;
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*root = node;
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return;
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}
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/* move it after where */
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if( node == where )
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return;
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tmp = node->next;
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node->next = where->next;
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where->next = node;
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prev->next = tmp;
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}
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void
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dump_kbnode (KBNODE node)
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{
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for (; node; node = node->next )
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{
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const char *s;
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switch (node->pkt->pkttype)
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{
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case 0: s="empty"; break;
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case PKT_PUBLIC_KEY: s="public-key"; break;
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case PKT_SECRET_KEY: s="secret-key"; break;
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case PKT_SECRET_SUBKEY: s= "secret-subkey"; break;
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case PKT_PUBKEY_ENC: s="public-enc"; break;
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case PKT_SIGNATURE: s="signature"; break;
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case PKT_ONEPASS_SIG: s="onepass-sig"; break;
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case PKT_USER_ID: s="user-id"; break;
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case PKT_PUBLIC_SUBKEY: s="public-subkey"; break;
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case PKT_COMMENT: s="comment"; break;
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case PKT_RING_TRUST: s="trust"; break;
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case PKT_PLAINTEXT: s="plaintext"; break;
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case PKT_COMPRESSED: s="compressed"; break;
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case PKT_ENCRYPTED: s="encrypted"; break;
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case PKT_GPG_CONTROL: s="gpg-control"; break;
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default: s="unknown"; break;
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}
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log_debug ("node %p %02x/%02x type=%s",
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node, node->flag, node->private_flag, s);
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if (node->pkt->pkttype == PKT_USER_ID)
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{
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PKT_user_id *uid = node->pkt->pkt.user_id;
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log_printf (" \"");
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es_write_sanitized (log_get_stream (), uid->name, uid->len,
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NULL, NULL);
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log_printf ("\" %c%c%c%c\n",
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uid->is_expired? 'e':'.',
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uid->is_revoked? 'r':'.',
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uid->created? 'v':'.',
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uid->is_primary? 'p':'.' );
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}
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else if (node->pkt->pkttype == PKT_SIGNATURE)
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{
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log_printf (" class=%02x keyid=%08lX ts=%lu\n",
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node->pkt->pkt.signature->sig_class,
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(ulong)node->pkt->pkt.signature->keyid[1],
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(ulong)node->pkt->pkt.signature->timestamp);
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}
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else if (node->pkt->pkttype == PKT_GPG_CONTROL)
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{
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log_printf (" ctrl=%d len=%u\n",
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node->pkt->pkt.gpg_control->control,
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(unsigned int)node->pkt->pkt.gpg_control->datalen);
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}
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else if (node->pkt->pkttype == PKT_PUBLIC_KEY
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|| node->pkt->pkttype == PKT_PUBLIC_SUBKEY)
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{
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PKT_public_key *pk = node->pkt->pkt.public_key;
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log_printf (" keyid=%08lX a=%d u=%d %c%c%c%c\n",
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(ulong)keyid_from_pk( pk, NULL ),
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pk->pubkey_algo, pk->pubkey_usage,
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pk->has_expired? 'e':'.',
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pk->flags.revoked? 'r':'.',
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pk->flags.valid? 'v':'.',
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pk->flags.mdc? 'm':'.');
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}
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log_flush ();
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}
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}
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