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[FreeBSD/releng/10.2.git] / contrib / ntp / sntp / libevent / test / regress_testutils.c
1 /*
2  * Copyright (c) 2010-2012 Niels Provos and Nick Mathewson
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  * 3. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 #include "../util-internal.h"
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
36 #include <sys/types.h>
37 #include <sys/stat.h>
38 #ifdef EVENT__HAVE_SYS_TIME_H
39 #include <sys/time.h>
40 #endif
41 #include <sys/queue.h>
42 #ifndef _WIN32
43 #include <sys/socket.h>
44 #include <signal.h>
45 #include <netinet/in.h>
46 #include <arpa/inet.h>
47 #include <unistd.h>
48 #endif
49 #ifdef EVENT__HAVE_NETINET_IN6_H
50 #include <netinet/in6.h>
51 #endif
52 #ifdef HAVE_NETDB_H
53 #include <netdb.h>
54 #endif
55 #include <fcntl.h>
56 #include <stdlib.h>
57 #include <stdio.h>
58 #include <string.h>
59 #include <errno.h>
60
61 #include "event2/dns.h"
62 #include "event2/dns_struct.h"
63 #include "event2/event.h"
64 #include "event2/event_compat.h"
65 #include "event2/util.h"
66 #include "event2/listener.h"
67 #include "event2/bufferevent.h"
68 #include "log-internal.h"
69 #include "regress.h"
70 #include "regress_testutils.h"
71
72 /* globals */
73 static struct evdns_server_port *dns_port;
74 evutil_socket_t dns_sock = -1;
75
76 /* Helper: return the port that a socket is bound on, in host order. */
77 int
78 regress_get_socket_port(evutil_socket_t fd)
79 {
80         struct sockaddr_storage ss;
81         ev_socklen_t socklen = sizeof(ss);
82         if (getsockname(fd, (struct sockaddr*)&ss, &socklen) != 0)
83                 return -1;
84         if (ss.ss_family == AF_INET)
85                 return ntohs( ((struct sockaddr_in*)&ss)->sin_port);
86         else if (ss.ss_family == AF_INET6)
87                 return ntohs( ((struct sockaddr_in6*)&ss)->sin6_port);
88         else
89                 return -1;
90 }
91
92 struct evdns_server_port *
93 regress_get_dnsserver(struct event_base *base,
94     ev_uint16_t *portnum,
95     evutil_socket_t *psock,
96     evdns_request_callback_fn_type cb,
97     void *arg)
98 {
99         struct evdns_server_port *port = NULL;
100         evutil_socket_t sock;
101         struct sockaddr_in my_addr;
102
103         sock = socket(AF_INET, SOCK_DGRAM, 0);
104         if (sock < 0) {
105                 tt_abort_perror("socket");
106         }
107
108         evutil_make_socket_nonblocking(sock);
109
110         memset(&my_addr, 0, sizeof(my_addr));
111         my_addr.sin_family = AF_INET;
112         my_addr.sin_port = htons(*portnum);
113         my_addr.sin_addr.s_addr = htonl(0x7f000001UL);
114         if (bind(sock, (struct sockaddr*)&my_addr, sizeof(my_addr)) < 0) {
115                 evutil_closesocket(sock);
116                 tt_abort_perror("bind");
117         }
118         port = evdns_add_server_port_with_base(base, sock, 0, cb, arg);
119         if (!*portnum)
120                 *portnum = regress_get_socket_port(sock);
121         if (psock)
122                 *psock = sock;
123
124         return port;
125 end:
126         return NULL;
127 }
128
129 void
130 regress_clean_dnsserver(void)
131 {
132         if (dns_port)
133                 evdns_close_server_port(dns_port);
134         if (dns_sock >= 0)
135                 evutil_closesocket(dns_sock);
136 }
137
138 void
139 regress_dns_server_cb(struct evdns_server_request *req, void *data)
140 {
141         struct regress_dns_server_table *tab = data;
142         const char *question;
143
144         if (req->nquestions != 1)
145                 TT_DIE(("Only handling one question at a time; got %d",
146                         req->nquestions));
147
148         question = req->questions[0]->name;
149
150         while (tab->q && evutil_ascii_strcasecmp(question, tab->q) &&
151             strcmp("*", tab->q))
152                 ++tab;
153         if (tab->q == NULL)
154                 TT_DIE(("Unexpected question: '%s'", question));
155
156         ++tab->seen;
157
158         if (!strcmp(tab->anstype, "err")) {
159                 int err = atoi(tab->ans);
160                 tt_assert(! evdns_server_request_respond(req, err));
161                 return;
162         } else if (!strcmp(tab->anstype, "errsoa")) {
163                 int err = atoi(tab->ans);
164                 char soa_record[] =
165                         "\x04" "dns1" "\x05" "icann" "\x03" "org" "\0"
166                         "\x0a" "hostmaster" "\x05" "icann" "\x03" "org" "\0"
167                         "\x77\xde\x5e\xba" /* serial */
168                         "\x00\x00\x1c\x20" /* refreshtime = 2h */
169                         "\x00\x00\x0e\x10" /* retry = 1h */
170                         "\x00\x12\x75\x00" /* expiration = 14d */
171                         "\x00\x00\x0e\x10" /* min.ttl = 1h */
172                         ;
173                 evdns_server_request_add_reply(
174                         req, EVDNS_AUTHORITY_SECTION,
175                         "example.com", EVDNS_TYPE_SOA, EVDNS_CLASS_INET,
176                         42, sizeof(soa_record) - 1, 0, soa_record);
177                 tt_assert(! evdns_server_request_respond(req, err));
178                 return;
179         } else if (!strcmp(tab->anstype, "A")) {
180                 struct in_addr in;
181                 if (!evutil_inet_pton(AF_INET, tab->ans, &in)) {
182                         TT_DIE(("Bad A value %s in table", tab->ans));
183                 }
184                 evdns_server_request_add_a_reply(req, question, 1, &in.s_addr,
185                     100);
186         } else if (!strcmp(tab->anstype, "AAAA")) {
187                 struct in6_addr in6;
188                 if (!evutil_inet_pton(AF_INET6, tab->ans, &in6)) {
189                         TT_DIE(("Bad AAAA value %s in table", tab->ans));
190                 }
191                 evdns_server_request_add_aaaa_reply(req,
192                     question, 1, &in6.s6_addr, 100);
193         } else {
194                 TT_DIE(("Weird table entry with type '%s'", tab->anstype));
195         }
196         tt_assert(! evdns_server_request_respond(req, 0))
197         return;
198 end:
199         tt_want(! evdns_server_request_drop(req));
200 }
201
202 int
203 regress_dnsserver(struct event_base *base, ev_uint16_t *port,
204     struct regress_dns_server_table *search_table)
205 {
206         dns_port = regress_get_dnsserver(base, port, &dns_sock,
207             regress_dns_server_cb, search_table);
208         return dns_port != NULL;
209 }
210
211 int
212 regress_get_listener_addr(struct evconnlistener *lev,
213     struct sockaddr *sa, ev_socklen_t *socklen)
214 {
215         evutil_socket_t s = evconnlistener_get_fd(lev);
216         if (s <= 0)
217                 return -1;
218         return getsockname(s, sa, socklen);
219 }