6 * This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 void adns_checkconsistency(adns_state ads, adns_query qu) {
26 adns__consistency(ads,qu,cc_user);
29 #define DLIST_CHECK(list, nodevar, part, body) \
31 assert(! (list).head->part back); \
32 for ((nodevar)= (list).head; (nodevar); (nodevar)= (nodevar)->part next) { \
33 assert((nodevar)->part next \
34 ? (nodevar) == (nodevar)->part next->part back \
35 : (nodevar) == (list).tail); \
40 #define DLIST_ASSERTON(node, nodevar, list, part) \
42 for ((nodevar)= (list).head; \
43 (nodevar) != (node); \
44 (nodevar)= (nodevar)->part next) { \
49 static void checkc_query_alloc(adns_state ads, adns_query qu) {
52 DLIST_CHECK(qu->allocations, an, , {
56 static void checkc_query(adns_state ads, adns_query qu) {
59 assert(qu->udpnextserver < ads->nservers);
60 assert(!(qu->udpsent & (~0UL << ads->nservers)));
61 assert(!(qu->tcpfailed & (~0UL << ads->nservers)));
62 assert(qu->udpretries <= UDPMAXRETRIES);
63 assert(qu->search_pos <= ads->nsearchlist);
64 if (qu->parent) DLIST_ASSERTON(qu, child, qu->parent->children, siblings.);
67 static void checkc_global(adns_state ads) {
70 assert(ads->udpsocket >= 0);
72 for (i=0; i<ads->nsortlist; i++)
73 assert(!(ads->sortlist[i].base.s_addr & ~ads->sortlist[i].mask.s_addr));
75 assert(ads->tcpserver >= 0 && ads->tcpserver < ads->nservers);
77 switch (ads->tcpstate) {
78 case server_connecting:
79 assert(ads->tcpsocket >= 0);
80 case server_disconnected: /* fall through */
81 assert(!ads->tcprecv.used);
82 assert(!ads->tcpsend.used);
85 assert(ads->tcpsocket >= 0);
88 assert(!"ads->tcpstate value");
91 assert(ads->searchlist || !ads->nsearchlist);
94 static void checkc_queue_timew(adns_state ads) {
97 DLIST_CHECK(ads->timew, qu, , {
101 assert(!qu->tcpfailed);
104 assert(ads->tcpstate != server_ok);
109 assert(!"timew state");
111 assert(!qu->children.head && !qu->children.tail);
112 checkc_query(ads,qu);
113 checkc_query_alloc(ads,qu);
117 static void checkc_queue_childw(adns_state ads) {
118 adns_query parent, child;
120 DLIST_CHECK(ads->childw, parent, , {
121 assert(parent->state == query_child);
122 assert(parent->children.head);
123 DLIST_CHECK(parent->children, child, siblings., {
124 assert(child->parent == parent);
125 assert(child->state != query_done);
127 checkc_query(ads,parent);
128 checkc_query_alloc(ads,parent);
132 static void checkc_queue_output(adns_state ads) {
135 DLIST_CHECK(ads->output, qu, , {
136 assert(qu->state == query_done);
137 assert(!qu->children.head && !qu->children.tail);
139 checkc_query(ads,qu);
143 void adns__consistency(adns_state ads, adns_query qu, consistency_checks cc) {
150 if (!(ads->iflags & adns_if_checkc_entex)) return;
153 if ((ads->iflags & adns_if_checkc_freq) != adns_if_checkc_freq) return;
160 checkc_queue_timew(ads);
161 checkc_queue_childw(ads);
162 checkc_queue_output(ads);
169 DLIST_ASSERTON(qu, search, ads->timew, );
172 DLIST_ASSERTON(qu, search, ads->childw, );
175 DLIST_ASSERTON(qu, search, ads->output, );
178 assert(!"specific query state");