7 * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
9 * It is part of adns, which is
10 * Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
11 * Copyright (C) 1999-2000 Tony Finch <dot@dotat.at>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software Foundation,
25 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 void adns_checkconsistency(adns_state ads
, adns_query qu
) {
31 adns__consistency(ads
,qu
,cc_user
);
34 #define DLIST_CHECK(list, nodevar, part, body) \
36 assert(! (list).head->part back); \
37 for ((nodevar)= (list).head; \
39 (nodevar)= (nodevar)->part next) { \
40 assert((nodevar)->part next \
41 ? (nodevar) == (nodevar)->part next->part back \
42 : (nodevar) == (list).tail); \
47 #define DLIST_ASSERTON(node, nodevar, list, part) \
49 for ((nodevar)= (list).head; \
50 (nodevar) != (node); \
51 (nodevar)= (nodevar)->part next) { \
56 static void checkc_query_alloc(adns_state ads
, adns_query qu
) {
59 DLIST_CHECK(qu
->allocations
, an
, , {
63 static void checkc_query(adns_state ads
, adns_query qu
) {
66 assert(qu
->udpnextserver
< ads
->nservers
);
67 assert(!(qu
->udpsent
& (~0UL << ads
->nservers
)));
68 assert(qu
->search_pos
<= ads
->nsearchlist
);
69 if (qu
->parent
) DLIST_ASSERTON(qu
, child
, qu
->parent
->children
, siblings
.);
72 static void checkc_notcpbuf(adns_state ads
) {
73 assert(!ads
->tcpsend
.used
);
74 assert(!ads
->tcprecv
.used
);
75 assert(!ads
->tcprecv_skip
);
78 static void checkc_global(adns_state ads
) {
81 assert(ads
->udpsocket
>= 0);
83 for (i
=0; i
<ads
->nsortlist
; i
++)
84 assert(!(ads
->sortlist
[i
].base
.s_addr
& ~ads
->sortlist
[i
].mask
.s_addr
));
86 assert(ads
->tcpserver
>= 0 && ads
->tcpserver
< ads
->nservers
);
88 switch (ads
->tcpstate
) {
89 case server_connecting
:
90 assert(ads
->tcpsocket
>= 0);
93 case server_disconnected
:
95 assert(ads
->tcpsocket
== -1);
99 assert(ads
->tcpsocket
>= 0);
100 assert(ads
->tcprecv_skip
<= ads
->tcprecv
.used
);
103 assert(!"ads->tcpstate value");
106 assert(ads
->searchlist
|| !ads
->nsearchlist
);
109 static void checkc_queue_udpw(adns_state ads
) {
112 DLIST_CHECK(ads
->udpw
, qu
, , {
113 assert(qu
->state
==query_tosend
);
114 assert(qu
->retries
<= UDPMAXRETRIES
);
116 assert(!qu
->children
.head
&& !qu
->children
.tail
);
117 checkc_query(ads
,qu
);
118 checkc_query_alloc(ads
,qu
);
122 static void checkc_queue_tcpw(adns_state ads
) {
125 DLIST_CHECK(ads
->tcpw
, qu
, , {
126 assert(qu
->state
==query_tcpw
);
127 assert(!qu
->children
.head
&& !qu
->children
.tail
);
128 assert(qu
->retries
<= ads
->nservers
+1);
129 checkc_query(ads
,qu
);
130 checkc_query_alloc(ads
,qu
);
134 static void checkc_queue_childw(adns_state ads
) {
135 adns_query parent
, child
;
137 DLIST_CHECK(ads
->childw
, parent
, , {
138 assert(parent
->state
== query_childw
);
139 assert(parent
->children
.head
);
140 DLIST_CHECK(parent
->children
, child
, siblings
., {
141 assert(child
->parent
== parent
);
142 assert(child
->state
!= query_done
);
144 checkc_query(ads
,parent
);
145 checkc_query_alloc(ads
,parent
);
149 static void checkc_queue_output(adns_state ads
) {
152 DLIST_CHECK(ads
->output
, qu
, , {
153 assert(qu
->state
== query_done
);
154 assert(!qu
->children
.head
&& !qu
->children
.tail
);
156 assert(!qu
->allocations
.head
&& !qu
->allocations
.tail
);
157 checkc_query(ads
,qu
);
161 void adns__consistency(adns_state ads
, adns_query qu
, consistency_checks cc
) {
168 if (!(ads
->iflags
& adns_if_checkc_entex
)) return;
171 if ((ads
->iflags
& adns_if_checkc_freq
) != adns_if_checkc_freq
) return;
178 checkc_queue_udpw(ads
);
179 checkc_queue_tcpw(ads
);
180 checkc_queue_childw(ads
);
181 checkc_queue_output(ads
);
186 DLIST_ASSERTON(qu
, search
, ads
->udpw
, );
189 DLIST_ASSERTON(qu
, search
, ads
->tcpw
, );
192 DLIST_ASSERTON(qu
, search
, ads
->childw
, );
195 DLIST_ASSERTON(qu
, search
, ads
->output
, );
198 assert(!"specific query state");