1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 199-2015 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * licensing@OpenSSL.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
106 /* socket-related functions used by s_client and s_server */
114 * With IPv6, it looks like Digital has mixed up the proper order of
115 * recursive header file inclusion, resulting in the compiler complaining
116 * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
117 * needed to have fileno() declared correctly... So let's define u_int
119 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
121 typedef unsigned int u_int;
124 #ifndef OPENSSL_NO_SOCK
131 # include <openssl/bio.h>
132 # include <openssl/err.h>
135 * init_client - helper routine to set up socket communication
136 * @sock: pointer to storage of resulting socket.
137 * @host: the host name or path (for AF_UNIX) to connect to.
138 * @port: the port to connect to (ignored for AF_UNIX).
139 * @family: desired socket family, may be AF_INET, AF_INET6, AF_UNIX or
141 * @type: socket type, must be SOCK_STREAM or SOCK_DGRAM
143 * This will create a socket and use it to connect to a host:port, or if
144 * family == AF_UNIX, to the path found in host.
146 * If the host has more than one address, it will try them one by one until
147 * a successful connection is established. The resulting socket will be
148 * found in *sock on success, it will be given INVALID_SOCKET otherwise.
150 * Returns 1 on success, 0 on failure.
152 int init_client(int *sock, const char *host, const char *port,
153 int family, int type)
155 BIO_ADDRINFO *res = NULL;
156 const BIO_ADDRINFO *ai = NULL;
159 if (!BIO_sock_init())
162 ret = BIO_lookup(host, port, BIO_LOOKUP_CLIENT, family, type, &res);
164 ERR_print_errors(bio_err);
169 for (ai = res; ai != NULL; ai = BIO_ADDRINFO_next(ai)) {
170 int protocol = (type == SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP);
172 if (BIO_ADDRINFO_family(ai) == AF_UNIX)
175 /* Admitedly, these checks are quite paranoid, we should
176 not get anything in the BIO_ADDRINFO chain that we haven't
178 OPENSSL_assert((family == AF_UNSPEC || family == BIO_ADDRINFO_family(res))
179 && (type == 0 || type == BIO_ADDRINFO_socktype(res))
180 && (protocol == BIO_ADDRINFO_protocol(res)));
182 *sock = BIO_socket(BIO_ADDRINFO_family(ai), BIO_ADDRINFO_socktype(ai),
183 BIO_ADDRINFO_protocol(ai), 0);
184 if (*sock == INVALID_SOCKET) {
185 /* Maybe the kernel doesn't support the socket family, even if
186 * BIO_lookup() added it in the returned result...
190 if (!BIO_connect(*sock, BIO_ADDRINFO_address(ai), 0)) {
191 BIO_closesocket(*sock);
192 *sock = INVALID_SOCKET;
196 /* Success, don't try any more addresses */
200 if (*sock == INVALID_SOCKET) {
201 ERR_print_errors(bio_err);
205 BIO_ADDRINFO_free(res);
210 * do_server - helper routine to perform a server operation
211 * @accept_sock: pointer to storage of resulting socket.
212 * @host: the host name or path (for AF_UNIX) to connect to.
213 * @port: the port to connect to (ignored for AF_UNIX).
214 * @family: desired socket family, may be AF_INET, AF_INET6, AF_UNIX or
216 * @type: socket type, must be SOCK_STREAM or SOCK_DGRAM
217 * @cb: pointer to a function that receives the accepted socket and
218 * should perform the communication with the connecting client.
219 * @context: pointer to memory that's passed verbatim to the cb function.
220 * @naccept: number of times an incoming connect should be accepted. If -1,
223 * This will create a socket and use it to listen to a host:port, or if
224 * family == AF_UNIX, to the path found in host, then start accepting
225 * incoming connections and run cb on the resulting socket.
227 * 0 on failure, something other on success.
229 int do_server(int *accept_sock, const char *host, const char *port,
230 int family, int type,
231 int (*cb) (const char *hostname, int s, int stype,
232 unsigned char *context), unsigned char *context,
238 BIO_ADDRINFO *res = NULL;
240 int protocol = (type == SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP);
242 if (!BIO_sock_init())
245 if (!BIO_lookup(host, port, BIO_LOOKUP_SERVER, family, type, &res)) {
246 ERR_print_errors(bio_err);
251 if (BIO_ADDRINFO_family(res) == AF_UNIX)
254 /* Admitedly, these checks are quite paranoid, we should
255 not get anything in the BIO_ADDRINFO chain that we haven't
257 OPENSSL_assert((family == AF_UNSPEC || family == BIO_ADDRINFO_family(res))
258 && (type == 0 || type == BIO_ADDRINFO_socktype(res))
259 && (protocol == BIO_ADDRINFO_protocol(res)));
261 asock = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
262 BIO_ADDRINFO_protocol(res), 0);
263 if (asock == INVALID_SOCKET
264 || !BIO_listen(asock, BIO_ADDRINFO_address(res), BIO_SOCK_REUSEADDR)) {
265 BIO_ADDRINFO_free(res);
266 ERR_print_errors(bio_err);
267 if (asock != INVALID_SOCKET)
268 BIO_closesocket(asock);
272 BIO_ADDRINFO_free(res);
274 if (accept_sock != NULL) {
275 *accept_sock = asock;
278 BIO_ADDR *accepted_addr = NULL;
280 if (type == SOCK_STREAM) {
281 if ((accepted_addr = BIO_ADDR_new()) == NULL) {
282 BIO_closesocket(asock);
286 sock = BIO_accept_ex(asock, accepted_addr, 0);
288 if (BIO_sock_should_retry(ret)) {
291 ERR_print_errors(bio_err);
292 BIO_ADDR_free(accepted_addr);
301 /* accepted_addr is NULL if we're dealing with SOCK_DGRAM
302 * this means that for SOCK_DGRAM, name will be NULL
304 if (accepted_addr != NULL) {
306 if (family == AF_UNIX)
307 name = BIO_ADDR_path_string(accepted_addr);
310 name = BIO_ADDR_hostname_string(accepted_addr, 0);
312 i = (*cb) (name, sock, type, context);
314 BIO_ADDR_free(accepted_addr);
315 if (type == SOCK_STREAM)
319 if (i < 0 || naccept == 0) {
327 if (family == AF_UNIX)
333 #endif /* OPENSSL_NO_SOCK */