1 /* $NetBSD: regress_testutils.c,v 1.1.1.1 2013/04/11 16:43:32 christos Exp $ */
2 /*
3 * Copyright (c) 2010-2012 Niels Provos and Nick Mathewson
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifdef WIN32
29 #include <winsock2.h>
30 #include <windows.h>
31 #include <ws2tcpip.h>
32 #endif
33
34 #include "event2/event-config.h"
35 #include <sys/cdefs.h>
36 __RCSID("$NetBSD: regress_testutils.c,v 1.1.1.1 2013/04/11 16:43:32 christos Exp $");
37
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #ifdef _EVENT_HAVE_SYS_TIME_H
41 #include <sys/time.h>
42 #endif
43 #include <sys/queue.h>
44 #ifndef WIN32
45 #include <sys/socket.h>
46 #include <signal.h>
47 #include <netinet/in.h>
48 #include <arpa/inet.h>
49 #include <unistd.h>
50 #endif
51 #ifdef _EVENT_HAVE_NETINET_IN6_H
52 #include <netinet/in6.h>
53 #endif
54 #ifdef HAVE_NETDB_H
55 #include <netdb.h>
56 #endif
57 #include <fcntl.h>
58 #include <stdlib.h>
59 #include <stdio.h>
60 #include <string.h>
61 #include <errno.h>
62
63 #include "event2/dns.h"
64 #include "event2/dns_struct.h"
65 #include "event2/event.h"
66 #include "event2/event_compat.h"
67 #include "event2/util.h"
68 #include "event2/listener.h"
69 #include "event2/bufferevent.h"
70 #include "log-internal.h"
71 #include "regress.h"
72 #include "regress_testutils.h"
73
74 #include "../util-internal.h"
75
76 /* globals */
77 static struct evdns_server_port *dns_port;
78 evutil_socket_t dns_sock = -1;
79
80 /* Helper: return the port that a socket is bound on, in host order. */
81 int
regress_get_socket_port(evutil_socket_t fd)82 regress_get_socket_port(evutil_socket_t fd)
83 {
84 struct sockaddr_storage ss;
85 ev_socklen_t socklen = sizeof(ss);
86 if (getsockname(fd, (struct sockaddr*)&ss, &socklen) != 0)
87 return -1;
88 if (ss.ss_family == AF_INET)
89 return ntohs( ((struct sockaddr_in*)&ss)->sin_port);
90 else if (ss.ss_family == AF_INET6)
91 return ntohs( ((struct sockaddr_in6*)&ss)->sin6_port);
92 else
93 return -1;
94 }
95
96 struct evdns_server_port *
regress_get_dnsserver(struct event_base * base,ev_uint16_t * portnum,evutil_socket_t * psock,evdns_request_callback_fn_type cb,void * arg)97 regress_get_dnsserver(struct event_base *base,
98 ev_uint16_t *portnum,
99 evutil_socket_t *psock,
100 evdns_request_callback_fn_type cb,
101 void *arg)
102 {
103 struct evdns_server_port *port = NULL;
104 evutil_socket_t sock;
105 struct sockaddr_in my_addr;
106
107 sock = socket(AF_INET, SOCK_DGRAM, 0);
108 if (sock < 0) {
109 tt_abort_perror("socket");
110 }
111
112 evutil_make_socket_nonblocking(sock);
113
114 memset(&my_addr, 0, sizeof(my_addr));
115 my_addr.sin_family = AF_INET;
116 my_addr.sin_port = htons(*portnum);
117 my_addr.sin_addr.s_addr = htonl(0x7f000001UL);
118 if (bind(sock, (struct sockaddr*)&my_addr, sizeof(my_addr)) < 0) {
119 evutil_closesocket(sock);
120 tt_abort_perror("bind");
121 }
122 port = evdns_add_server_port_with_base(base, sock, 0, cb, arg);
123 if (!*portnum)
124 *portnum = regress_get_socket_port(sock);
125 if (psock)
126 *psock = sock;
127
128 return port;
129 end:
130 return NULL;
131 }
132
133 void
regress_clean_dnsserver(void)134 regress_clean_dnsserver(void)
135 {
136 if (dns_port)
137 evdns_close_server_port(dns_port);
138 if (dns_sock >= 0)
139 evutil_closesocket(dns_sock);
140 }
141
142 void
regress_dns_server_cb(struct evdns_server_request * req,void * data)143 regress_dns_server_cb(struct evdns_server_request *req, void *data)
144 {
145 struct regress_dns_server_table *tab = data;
146 const char *question;
147
148 if (req->nquestions != 1)
149 TT_DIE(("Only handling one question at a time; got %d",
150 req->nquestions));
151
152 question = req->questions[0]->name;
153
154 while (tab->q && evutil_ascii_strcasecmp(question, tab->q) &&
155 strcmp("*", tab->q))
156 ++tab;
157 if (tab->q == NULL)
158 TT_DIE(("Unexpected question: '%s'", question));
159
160 ++tab->seen;
161
162 if (!strcmp(tab->anstype, "err")) {
163 int err = atoi(tab->ans);
164 tt_assert(! evdns_server_request_respond(req, err));
165 return;
166 } else if (!strcmp(tab->anstype, "errsoa")) {
167 int err = atoi(tab->ans);
168 char soa_record[] =
169 "\x04" "dns1" "\x05" "icann" "\x03" "org" "\0"
170 "\x0a" "hostmaster" "\x05" "icann" "\x03" "org" "\0"
171 "\x77\xde\x5e\xba" /* serial */
172 "\x00\x00\x1c\x20" /* refreshtime = 2h */
173 "\x00\x00\x0e\x10" /* retry = 1h */
174 "\x00\x12\x75\x00" /* expiration = 14d */
175 "\x00\x00\x0e\x10" /* min.ttl = 1h */
176 ;
177 evdns_server_request_add_reply(
178 req, EVDNS_AUTHORITY_SECTION,
179 "example.com", EVDNS_TYPE_SOA, EVDNS_CLASS_INET,
180 42, sizeof(soa_record) - 1, 0, soa_record);
181 tt_assert(! evdns_server_request_respond(req, err));
182 return;
183 } else if (!strcmp(tab->anstype, "A")) {
184 struct in_addr in;
185 if (!evutil_inet_pton(AF_INET, tab->ans, &in)) {
186 TT_DIE(("Bad A value %s in table", tab->ans));
187 }
188 evdns_server_request_add_a_reply(req, question, 1, &in.s_addr,
189 100);
190 } else if (!strcmp(tab->anstype, "AAAA")) {
191 struct in6_addr in6;
192 if (!evutil_inet_pton(AF_INET6, tab->ans, &in6)) {
193 TT_DIE(("Bad AAAA value %s in table", tab->ans));
194 }
195 evdns_server_request_add_aaaa_reply(req,
196 question, 1, &in6.s6_addr, 100);
197 } else {
198 TT_DIE(("Weird table entry with type '%s'", tab->anstype));
199 }
200 tt_assert(! evdns_server_request_respond(req, 0))
201 return;
202 end:
203 tt_want(! evdns_server_request_drop(req));
204 }
205
206 int
regress_dnsserver(struct event_base * base,ev_uint16_t * port,struct regress_dns_server_table * search_table)207 regress_dnsserver(struct event_base *base, ev_uint16_t *port,
208 struct regress_dns_server_table *search_table)
209 {
210 dns_port = regress_get_dnsserver(base, port, &dns_sock,
211 regress_dns_server_cb, search_table);
212 return dns_port != NULL;
213 }
214
215 int
regress_get_listener_addr(struct evconnlistener * lev,struct sockaddr * sa,ev_socklen_t * socklen)216 regress_get_listener_addr(struct evconnlistener *lev,
217 struct sockaddr *sa, ev_socklen_t *socklen)
218 {
219 evutil_socket_t s = evconnlistener_get_fd(lev);
220 if (s <= 0)
221 return -1;
222 return getsockname(s, sa, socklen);
223 }
224