1 /* $OpenBSD: s_socket.c,v 1.7 2015/07/20 03:22:25 doug Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
59 #include <sys/socket.h>
61 #include <netinet/in.h>
72 #include <openssl/ssl.h>
76 static int init_server(int *sock, int port, int type);
77 static int init_server_long(int *sock, int port, char *ip, int type);
78 static int do_accept(int acc_sock, int *sock, char **host);
81 init_client(int *sock, char *host, char *port, int type, int af)
83 struct addrinfo hints, *ai_top, *ai;
86 memset(&hints, '\0', sizeof(hints));
88 hints.ai_socktype = type;
90 if ((i = getaddrinfo(host, port, &hints, &ai_top)) != 0) {
91 BIO_printf(bio_err, "getaddrinfo: %s\n", gai_strerror(i));
94 if (ai_top == NULL || ai_top->ai_addr == NULL) {
95 BIO_printf(bio_err, "getaddrinfo returned no addresses\n");
101 for (ai = ai_top; ai != NULL; ai = ai->ai_next) {
102 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
106 if (type == SOCK_STREAM) {
108 i = setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,
109 (char *) &i, sizeof(i));
115 if ((i = connect(s, ai->ai_addr, ai->ai_addrlen)) == 0) {
117 freeaddrinfo(ai_top);
128 freeaddrinfo(ai_top);
133 do_server(int port, int type, int *ret,
134 int (*cb) (char *hostname, int s, unsigned char *context),
135 unsigned char *context)
139 int accept_socket = 0;
142 if (!init_server(&accept_socket, port, type))
146 *ret = accept_socket;
150 if (type == SOCK_STREAM) {
151 if (do_accept(accept_socket, &sock, &name) == 0) {
152 shutdown(accept_socket, SHUT_RD);
153 close(accept_socket);
157 sock = accept_socket;
158 i = (*cb) (name, sock, context);
160 if (type == SOCK_STREAM) {
161 shutdown(sock, SHUT_RDWR);
165 shutdown(accept_socket, SHUT_RDWR);
166 close(accept_socket);
173 init_server_long(int *sock, int port, char *ip, int type)
176 struct sockaddr_in server;
179 memset((char *) &server, 0, sizeof(server));
180 server.sin_family = AF_INET;
181 server.sin_port = htons((unsigned short) port);
183 server.sin_addr.s_addr = INADDR_ANY;
185 memcpy(&server.sin_addr.s_addr, ip, 4);
187 if (type == SOCK_STREAM)
188 s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
189 else /* type == SOCK_DGRAM */
190 s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
194 #if defined SOL_SOCKET && defined SO_REUSEADDR
197 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
198 (void *) &j, sizeof j) == -1) {
199 perror("setsockopt");
204 if (bind(s, (struct sockaddr *) & server, sizeof(server)) == -1) {
208 /* Make it 128 for linux */
209 if (type == SOCK_STREAM && listen(s, 128) == -1)
214 if ((ret == 0) && (s != -1)) {
215 shutdown(s, SHUT_RD);
222 init_server(int *sock, int port, int type)
224 return (init_server_long(sock, port, NULL, type));
228 do_accept(int acc_sock, int *sock, char **host)
231 struct hostent *h1, *h2;
232 static struct sockaddr_in from;
234 /* struct linger ling; */
238 memset((char *) &from, 0, sizeof(from));
240 ret = accept(acc_sock, (struct sockaddr *) & from, &len);
242 if (errno == EINTR) {
243 /* check_timeout(); */
246 fprintf(stderr, "errno=%d ", errno);
253 i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling));
254 if (i < 0) { perror("linger"); return(0); }
256 i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
257 if (i < 0) { perror("keepalive"); return(0); }
262 h1 = gethostbyaddr((char *) &from.sin_addr.s_addr,
263 sizeof(from.sin_addr.s_addr), AF_INET);
265 BIO_printf(bio_err, "bad gethostbyaddr\n");
269 if ((*host = strdup(h1->h_name)) == NULL) {
275 h2 = gethostbyname(*host);
277 BIO_printf(bio_err, "gethostbyname failure\n");
281 if (h2->h_addrtype != AF_INET) {
282 BIO_printf(bio_err, "gethostbyname addr is not AF_INET\n");
294 extract_host_port(char *str, char **host_ptr, unsigned char *ip,
300 p = strrchr(str, '/'); /* IPv6 host/port */
302 p = strrchr(str, ':');
305 BIO_printf(bio_err, "no port defined\n");
310 if (host_ptr != NULL)
313 if (port_ptr != NULL && p != NULL && *p != '\0')
320 extract_port(char *str, short *port_ptr)
326 i = strtonum(str, 1, 65535, &errstr);
328 *port_ptr = (unsigned short) i;
330 s = getservbyname(str, "tcp");
332 BIO_printf(bio_err, "getservbyname failure for %s\n", str);
335 *port_ptr = ntohs((unsigned short) s->s_port);