regress_testutils.c revision 1.1.1.2
1 /* $NetBSD: regress_testutils.c,v 1.1.1.2 2017/01/31 21:14:53 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 #include "../util-internal.h" 28 29 #ifdef _WIN32 30 #include <winsock2.h> 31 #include <windows.h> 32 #include <ws2tcpip.h> 33 #endif 34 35 #include "event2/event-config.h" 36 #include <sys/cdefs.h> 37 __RCSID("$NetBSD: regress_testutils.c,v 1.1.1.2 2017/01/31 21:14:53 christos Exp $"); 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 #ifdef EVENT__HAVE_SYS_TIME_H 42 #include <sys/time.h> 43 #endif 44 #include <sys/queue.h> 45 #ifndef _WIN32 46 #include <sys/socket.h> 47 #include <signal.h> 48 #include <netinet/in.h> 49 #include <arpa/inet.h> 50 #include <unistd.h> 51 #endif 52 #ifdef EVENT__HAVE_NETINET_IN6_H 53 #include <netinet/in6.h> 54 #endif 55 #ifdef HAVE_NETDB_H 56 #include <netdb.h> 57 #endif 58 #include <fcntl.h> 59 #include <stdlib.h> 60 #include <stdio.h> 61 #include <string.h> 62 #include <errno.h> 63 64 #include "event2/dns.h" 65 #include "event2/dns_struct.h" 66 #include "event2/event.h" 67 #include "event2/event_compat.h" 68 #include "event2/util.h" 69 #include "event2/listener.h" 70 #include "event2/bufferevent.h" 71 #include "log-internal.h" 72 #include "regress.h" 73 #include "regress_testutils.h" 74 75 /* globals */ 76 static struct evdns_server_port *dns_port; 77 evutil_socket_t dns_sock = -1; 78 79 /* Helper: return the port that a socket is bound on, in host order. */ 80 int 81 regress_get_socket_port(evutil_socket_t fd) 82 { 83 struct sockaddr_storage ss; 84 ev_socklen_t socklen = sizeof(ss); 85 if (getsockname(fd, (struct sockaddr*)&ss, &socklen) != 0) 86 return -1; 87 if (ss.ss_family == AF_INET) 88 return ntohs( ((struct sockaddr_in*)&ss)->sin_port); 89 else if (ss.ss_family == AF_INET6) 90 return ntohs( ((struct sockaddr_in6*)&ss)->sin6_port); 91 else 92 return -1; 93 } 94 95 struct evdns_server_port * 96 regress_get_dnsserver(struct event_base *base, 97 ev_uint16_t *portnum, 98 evutil_socket_t *psock, 99 evdns_request_callback_fn_type cb, 100 void *arg) 101 { 102 struct evdns_server_port *port = NULL; 103 evutil_socket_t sock; 104 struct sockaddr_in my_addr; 105 106 sock = socket(AF_INET, SOCK_DGRAM, 0); 107 if (sock < 0) { 108 tt_abort_perror("socket"); 109 } 110 111 evutil_make_socket_nonblocking(sock); 112 113 memset(&my_addr, 0, sizeof(my_addr)); 114 my_addr.sin_family = AF_INET; 115 my_addr.sin_port = htons(*portnum); 116 my_addr.sin_addr.s_addr = htonl(0x7f000001UL); 117 if (bind(sock, (struct sockaddr*)&my_addr, sizeof(my_addr)) < 0) { 118 evutil_closesocket(sock); 119 tt_abort_perror("bind"); 120 } 121 port = evdns_add_server_port_with_base(base, sock, 0, cb, arg); 122 if (!*portnum) 123 *portnum = regress_get_socket_port(sock); 124 if (psock) 125 *psock = sock; 126 127 return port; 128 end: 129 return NULL; 130 } 131 132 void 133 regress_clean_dnsserver(void) 134 { 135 if (dns_port) { 136 evdns_close_server_port(dns_port); 137 dns_port = NULL; 138 } 139 if (dns_sock >= 0) { 140 evutil_closesocket(dns_sock); 141 dns_sock = -1; 142 } 143 } 144 145 static void strtolower(char *s) 146 { 147 while (*s) { 148 *s = EVUTIL_TOLOWER_(*s); 149 ++s; 150 } 151 } 152 void 153 regress_dns_server_cb(struct evdns_server_request *req, void *data) 154 { 155 struct regress_dns_server_table *tab = data; 156 char *question; 157 158 if (req->nquestions != 1) 159 TT_DIE(("Only handling one question at a time; got %d", 160 req->nquestions)); 161 162 question = req->questions[0]->name; 163 164 while (tab->q && evutil_ascii_strcasecmp(question, tab->q) && 165 strcmp("*", tab->q)) 166 ++tab; 167 if (tab->q == NULL) 168 TT_DIE(("Unexpected question: '%s'", question)); 169 170 ++tab->seen; 171 172 if (tab->lower) 173 strtolower(question); 174 175 if (!strcmp(tab->anstype, "err")) { 176 int err = atoi(tab->ans); 177 tt_assert(! evdns_server_request_respond(req, err)); 178 return; 179 } else if (!strcmp(tab->anstype, "errsoa")) { 180 int err = atoi(tab->ans); 181 char soa_record[] = 182 "\x04" "dns1" "\x05" "icann" "\x03" "org" "\0" 183 "\x0a" "hostmaster" "\x05" "icann" "\x03" "org" "\0" 184 "\x77\xde\x5e\xba" /* serial */ 185 "\x00\x00\x1c\x20" /* refreshtime = 2h */ 186 "\x00\x00\x0e\x10" /* retry = 1h */ 187 "\x00\x12\x75\x00" /* expiration = 14d */ 188 "\x00\x00\x0e\x10" /* min.ttl = 1h */ 189 ; 190 evdns_server_request_add_reply( 191 req, EVDNS_AUTHORITY_SECTION, 192 "example.com", EVDNS_TYPE_SOA, EVDNS_CLASS_INET, 193 42, sizeof(soa_record) - 1, 0, soa_record); 194 tt_assert(! evdns_server_request_respond(req, err)); 195 return; 196 } else if (!strcmp(tab->anstype, "A")) { 197 struct in_addr in; 198 if (!evutil_inet_pton(AF_INET, tab->ans, &in)) { 199 TT_DIE(("Bad A value %s in table", tab->ans)); 200 } 201 evdns_server_request_add_a_reply(req, question, 1, &in.s_addr, 202 100); 203 } else if (!strcmp(tab->anstype, "AAAA")) { 204 struct in6_addr in6; 205 if (!evutil_inet_pton(AF_INET6, tab->ans, &in6)) { 206 TT_DIE(("Bad AAAA value %s in table", tab->ans)); 207 } 208 evdns_server_request_add_aaaa_reply(req, 209 question, 1, &in6.s6_addr, 100); 210 } else { 211 TT_DIE(("Weird table entry with type '%s'", tab->anstype)); 212 } 213 tt_assert(! evdns_server_request_respond(req, 0)) 214 return; 215 end: 216 tt_want(! evdns_server_request_drop(req)); 217 } 218 219 int 220 regress_dnsserver(struct event_base *base, ev_uint16_t *port, 221 struct regress_dns_server_table *search_table) 222 { 223 dns_port = regress_get_dnsserver(base, port, &dns_sock, 224 regress_dns_server_cb, search_table); 225 return dns_port != NULL; 226 } 227 228 int 229 regress_get_listener_addr(struct evconnlistener *lev, 230 struct sockaddr *sa, ev_socklen_t *socklen) 231 { 232 evutil_socket_t s = evconnlistener_get_fd(lev); 233 if (s <= 0) 234 return -1; 235 return getsockname(s, sa, socklen); 236 } 237
Indexes created Sat Apr 11 00:22:22 UTC 2026