external/bsd/libevent/dist/test/regress_testutils.c

   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
  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 *
  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
 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
 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
 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
 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 }