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) {
80 assert(ads->udpsocket >= 0);
82 for (i=0; i<ads->nsortlist; i++)
83 assert(!(ads->sortlist[i].base.s_addr & ~ads->sortlist[i].mask.s_addr));
85 assert(ads->tcpserver >= 0 && ads->tcpserver < ads->nservers);
87 switch (ads->tcpstate) {
88 case server_connecting:
89 assert(ads->tcpsocket >= 0);
92 case server_disconnected:
94 assert(ads->tcpsocket == -1);
98 assert(ads->tcpsocket >= 0);
99 assert(ads->tcprecv_skip <= ads->tcprecv.used);
102 assert(!"ads->tcpstate value");
105 assert(ads->searchlist || !ads->nsearchlist);
108 static void checkc_queue_udpw(adns_state ads) {
111 DLIST_CHECK(ads->udpw, qu, , {
112 assert(qu->state==query_tosend);
113 assert(qu->retries <= UDPMAXRETRIES);
115 assert(!qu->children.head && !qu->children.tail);
116 checkc_query(ads,qu);
117 checkc_query_alloc(ads,qu);
121 static void checkc_queue_tcpw(adns_state ads) {
124 DLIST_CHECK(ads->tcpw, qu, , {
125 assert(qu->state==query_tcpw);
126 assert(!qu->children.head && !qu->children.tail);
127 assert(qu->retries <= ads->nservers+1);
128 checkc_query(ads,qu);
129 checkc_query_alloc(ads,qu);
133 static void checkc_queue_childw(adns_state ads) {
134 adns_query parent, child;
136 DLIST_CHECK(ads->childw, parent, , {
137 assert(parent->state == query_childw);
138 assert(parent->children.head);
139 DLIST_CHECK(parent->children, child, siblings., {
140 assert(child->parent == parent);
141 assert(child->state != query_done);
143 checkc_query(ads,parent);
144 checkc_query_alloc(ads,parent);
148 static void checkc_queue_output(adns_state ads) {
151 DLIST_CHECK(ads->output, qu, , {
152 assert(qu->state == query_done);
153 assert(!qu->children.head && !qu->children.tail);
155 assert(!qu->allocations.head && !qu->allocations.tail);
156 checkc_query(ads,qu);
160 void adns__consistency(adns_state ads, adns_query qu, consistency_checks cc) {
167 if (!(ads->iflags & adns_if_checkc_entex)) return;
170 if ((ads->iflags & adns_if_checkc_freq) != adns_if_checkc_freq) return;
177 checkc_queue_udpw(ads);
178 checkc_queue_tcpw(ads);
179 checkc_queue_childw(ads);
180 checkc_queue_output(ads);
185 DLIST_ASSERTON(qu, search, ads->udpw, );
188 DLIST_ASSERTON(qu, search, ads->tcpw, );
191 DLIST_ASSERTON(qu, search, ads->childw, );
194 DLIST_ASSERTON(qu, search, ads->output, );
197 assert(!"specific query state");