6 * This file is part of adns, which is
7 * Copyright (C) 1997-2000,2003,2006 Ian Jackson
8 * Copyright (C) 1999-2000,2003,2006 Tony Finch
9 * Copyright (C) 1991 Massachusetts Institute of Technology
10 * (See the file INSTALL for full details.)
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 void adns_checkconsistency(adns_state ads, adns_query qu) {
30 adns__consistency(ads,qu,cc_user);
33 #define DLIST_CHECK(list, nodevar, part, body) \
35 assert(! (list).head->part back); \
36 for ((nodevar)= (list).head; \
38 (nodevar)= (nodevar)->part next) { \
39 assert((nodevar)->part next \
40 ? (nodevar) == (nodevar)->part next->part back \
41 : (nodevar) == (list).tail); \
46 #define DLIST_ASSERTON(node, nodevar, list, part) \
48 for ((nodevar)= (list).head; \
49 (nodevar) != (node); \
50 (nodevar)= (nodevar)->part next) { \
55 static void checkc_query_alloc(adns_state ads, adns_query qu) {
58 DLIST_CHECK(qu->allocations, an, , {
62 static void checkc_query(adns_state ads, adns_query qu) {
65 assert(qu->udpnextserver < ads->nservers);
66 assert(!(qu->udpsent & (~0UL << ads->nservers)));
67 assert(qu->search_pos <= ads->nsearchlist);
68 if (qu->parent) DLIST_ASSERTON(qu, child, qu->parent->children, siblings.);
71 static void checkc_notcpbuf(adns_state ads) {
72 assert(!ads->tcpsend.used);
73 assert(!ads->tcprecv.used);
74 assert(!ads->tcprecv_skip);
77 static void checkc_global(adns_state ads) {
78 const struct sortlist *sl;
81 assert(ads->udpsocket >= 0);
83 for (i=0; i<ads->nsortlist; i++) {
84 sl = &ads->sortlist[i];
85 assert(adns__addr_match_p(sl->af,&sl->base, sl->af,&sl->base, &sl->mask));
88 assert(ads->tcpserver >= 0 && ads->tcpserver < ads->nservers);
90 switch (ads->tcpstate) {
91 case server_connecting:
92 assert(ads->tcpsocket >= 0);
95 case server_disconnected:
97 assert(ads->tcpsocket == -1);
101 assert(ads->tcpsocket >= 0);
102 assert(ads->tcprecv_skip <= ads->tcprecv.used);
105 assert(!"ads->tcpstate value");
108 assert(ads->searchlist || !ads->nsearchlist);
111 static void checkc_queue_udpw(adns_state ads) {
114 DLIST_CHECK(ads->udpw, qu, , {
115 assert(qu->state==query_tosend);
116 assert(qu->retries <= UDPMAXRETRIES);
118 assert(!qu->children.head && !qu->children.tail);
119 checkc_query(ads,qu);
120 checkc_query_alloc(ads,qu);
124 static void checkc_queue_tcpw(adns_state ads) {
127 DLIST_CHECK(ads->tcpw, qu, , {
128 assert(qu->state==query_tcpw);
129 assert(!qu->children.head && !qu->children.tail);
130 assert(qu->retries <= ads->nservers+1);
131 checkc_query(ads,qu);
132 checkc_query_alloc(ads,qu);
136 static void checkc_queue_childw(adns_state ads) {
137 adns_query parent, child;
139 DLIST_CHECK(ads->childw, parent, , {
140 assert(parent->state == query_childw);
141 assert(parent->children.head);
142 DLIST_CHECK(parent->children, child, siblings., {
143 assert(child->parent == parent);
144 assert(child->state != query_done);
146 checkc_query(ads,parent);
147 checkc_query_alloc(ads,parent);
151 static void checkc_queue_output(adns_state ads) {
154 DLIST_CHECK(ads->output, qu, , {
155 assert(qu->state == query_done);
156 assert(!qu->children.head && !qu->children.tail);
158 assert(!qu->allocations.head && !qu->allocations.tail);
159 checkc_query(ads,qu);
163 void adns__consistency(adns_state ads, adns_query qu, consistency_checks cc) {
170 if (!(ads->iflags & adns_if_checkc_entex)) return;
173 if ((ads->iflags & adns_if_checkc_freq) != adns_if_checkc_freq) return;
180 checkc_queue_udpw(ads);
181 checkc_queue_tcpw(ads);
182 checkc_queue_childw(ads);
183 checkc_queue_output(ads);
188 DLIST_ASSERTON(qu, search, ads->udpw, );
191 DLIST_ASSERTON(qu, search, ads->tcpw, );
194 DLIST_ASSERTON(qu, search, ads->childw, );
197 DLIST_ASSERTON(qu, search, ads->output, );
200 assert(!"specific query state");