234 lines
6.4 KiB
C
234 lines
6.4 KiB
C
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/*
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* Copyright (c) 2010-2012 Niels Provos and Nick Mathewson
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "../util-internal.h"
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#ifdef _WIN32
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#include <winsock2.h>
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#include <windows.h>
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#include <ws2tcpip.h>
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#endif
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#include "event2/event-config.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef EVENT__HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <sys/queue.h>
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#ifndef _WIN32
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#include <sys/socket.h>
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#include <signal.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#endif
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#ifdef EVENT__HAVE_NETINET_IN6_H
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#include <netinet/in6.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "event2/dns.h"
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#include "event2/dns_struct.h"
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#include "event2/event.h"
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#include "event2/event_compat.h"
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#include "event2/util.h"
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#include "event2/listener.h"
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#include "event2/bufferevent.h"
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#include "log-internal.h"
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#include "regress.h"
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#include "regress_testutils.h"
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/* globals */
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static struct evdns_server_port *dns_port;
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evutil_socket_t dns_sock = -1;
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/* Helper: return the port that a socket is bound on, in host order. */
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int
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regress_get_socket_port(evutil_socket_t fd)
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{
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struct sockaddr_storage ss;
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ev_socklen_t socklen = sizeof(ss);
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if (getsockname(fd, (struct sockaddr*)&ss, &socklen) != 0)
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return -1;
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if (ss.ss_family == AF_INET)
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return ntohs( ((struct sockaddr_in*)&ss)->sin_port);
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else if (ss.ss_family == AF_INET6)
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return ntohs( ((struct sockaddr_in6*)&ss)->sin6_port);
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else
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return -1;
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}
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struct evdns_server_port *
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regress_get_dnsserver(struct event_base *base,
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ev_uint16_t *portnum,
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evutil_socket_t *psock,
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evdns_request_callback_fn_type cb,
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void *arg)
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{
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struct evdns_server_port *port = NULL;
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evutil_socket_t sock;
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struct sockaddr_in my_addr;
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sock = socket(AF_INET, SOCK_DGRAM, 0);
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if (sock < 0) {
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tt_abort_perror("socket");
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}
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evutil_make_socket_nonblocking(sock);
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memset(&my_addr, 0, sizeof(my_addr));
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my_addr.sin_family = AF_INET;
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my_addr.sin_port = htons(*portnum);
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my_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
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if (bind(sock, (struct sockaddr*)&my_addr, sizeof(my_addr)) < 0) {
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evutil_closesocket(sock);
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tt_abort_perror("bind");
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}
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port = evdns_add_server_port_with_base(base, sock, 0, cb, arg);
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if (!*portnum)
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*portnum = regress_get_socket_port(sock);
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if (psock)
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*psock = sock;
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return port;
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end:
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return NULL;
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}
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void
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regress_clean_dnsserver(void)
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{
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if (dns_port) {
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evdns_close_server_port(dns_port);
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dns_port = NULL;
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}
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if (dns_sock >= 0) {
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evutil_closesocket(dns_sock);
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dns_sock = -1;
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}
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}
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static void strtolower(char *s)
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{
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while (*s) {
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*s = EVUTIL_TOLOWER_(*s);
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++s;
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}
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}
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void
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regress_dns_server_cb(struct evdns_server_request *req, void *data)
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{
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struct regress_dns_server_table *tab = data;
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char *question;
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if (req->nquestions != 1)
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TT_DIE(("Only handling one question at a time; got %d",
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req->nquestions));
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question = req->questions[0]->name;
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while (tab->q && evutil_ascii_strcasecmp(question, tab->q) &&
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strcmp("*", tab->q))
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++tab;
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if (tab->q == NULL)
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TT_DIE(("Unexpected question: '%s'", question));
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++tab->seen;
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if (tab->lower)
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strtolower(question);
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if (!strcmp(tab->anstype, "err")) {
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int err = atoi(tab->ans);
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tt_assert(! evdns_server_request_respond(req, err));
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return;
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} else if (!strcmp(tab->anstype, "errsoa")) {
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int err = atoi(tab->ans);
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char soa_record[] =
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"\x04" "dns1" "\x05" "icann" "\x03" "org" "\0"
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"\x0a" "hostmaster" "\x05" "icann" "\x03" "org" "\0"
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"\x77\xde\x5e\xba" /* serial */
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"\x00\x00\x1c\x20" /* refreshtime = 2h */
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"\x00\x00\x0e\x10" /* retry = 1h */
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"\x00\x12\x75\x00" /* expiration = 14d */
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"\x00\x00\x0e\x10" /* min.ttl = 1h */
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;
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evdns_server_request_add_reply(
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req, EVDNS_AUTHORITY_SECTION,
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"example.com", EVDNS_TYPE_SOA, EVDNS_CLASS_INET,
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42, sizeof(soa_record) - 1, 0, soa_record);
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tt_assert(! evdns_server_request_respond(req, err));
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return;
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} else if (!strcmp(tab->anstype, "A")) {
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struct in_addr in;
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if (!evutil_inet_pton(AF_INET, tab->ans, &in)) {
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TT_DIE(("Bad A value %s in table", tab->ans));
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}
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evdns_server_request_add_a_reply(req, question, 1, &in.s_addr,
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100);
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} else if (!strcmp(tab->anstype, "AAAA")) {
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struct in6_addr in6;
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if (!evutil_inet_pton(AF_INET6, tab->ans, &in6)) {
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TT_DIE(("Bad AAAA value %s in table", tab->ans));
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}
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evdns_server_request_add_aaaa_reply(req,
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question, 1, &in6.s6_addr, 100);
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} else {
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TT_DIE(("Weird table entry with type '%s'", tab->anstype));
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}
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tt_assert(! evdns_server_request_respond(req, 0))
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return;
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end:
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tt_want(! evdns_server_request_drop(req));
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}
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int
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regress_dnsserver(struct event_base *base, ev_uint16_t *port,
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struct regress_dns_server_table *search_table)
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{
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dns_port = regress_get_dnsserver(base, port, &dns_sock,
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regress_dns_server_cb, search_table);
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return dns_port != NULL;
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}
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int
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regress_get_listener_addr(struct evconnlistener *lev,
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struct sockaddr *sa, ev_socklen_t *socklen)
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{
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evutil_socket_t s = evconnlistener_get_fd(lev);
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if (s <= 0)
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return -1;
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return getsockname(s, sa, socklen);
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}
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