2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
14 #ifndef OPENSSL_NO_SOCK
15 # define SOCKET_PROTOCOL IPPROTO_TCP
17 # define MAX_LISTEN SO_MAXCONN
18 # elif defined(SOMAXCONN)
19 # define MAX_LISTEN SOMAXCONN
21 # define MAX_LISTEN 32
23 # if defined(OPENSSL_SYS_WINDOWS)
24 static int wsa_init_done = 0;
27 # if !OPENSSL_API_1_1_0
28 int BIO_get_host_ip(const char *str, unsigned char *ip)
30 BIO_ADDRINFO *res = NULL;
33 if (BIO_sock_init() != 1)
34 return 0; /* don't generate another error code here */
36 if (BIO_lookup(str, NULL, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
39 if (BIO_ADDRINFO_family(res) != AF_INET) {
40 BIOerr(BIO_F_BIO_GET_HOST_IP,
41 BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
42 } else if (BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), NULL, &l)) {
44 * Because only AF_INET addresses will reach this far, we can assert
47 if (ossl_assert(l == 4))
48 ret = BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), ip, &l);
50 BIO_ADDRINFO_free(res);
52 ERR_add_error_data(2, "host=", str);
58 int BIO_get_port(const char *str, unsigned short *port_ptr)
60 BIO_ADDRINFO *res = NULL;
64 BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED);
68 if (BIO_sock_init() != 1)
69 return 0; /* don't generate another error code here */
71 if (BIO_lookup(NULL, str, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
72 if (BIO_ADDRINFO_family(res) != AF_INET) {
73 BIOerr(BIO_F_BIO_GET_PORT,
74 BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET);
76 *port_ptr = ntohs(BIO_ADDR_rawport(BIO_ADDRINFO_address(res)));
79 BIO_ADDRINFO_free(res);
81 ERR_add_error_data(2, "host=", str);
88 int BIO_sock_error(int sock)
91 socklen_t size = sizeof(j);
94 * Note: under Windows the third parameter is of type (char *) whereas
95 * under other systems it is (void *) if you don't have a cast it will
96 * choke the compiler: if you do have a cast then you can either go for
97 * (char *) or (void *).
99 i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, &size);
101 return get_last_socket_error();
106 # if !OPENSSL_API_1_1_0
107 struct hostent *BIO_gethostbyname(const char *name)
110 * Caching gethostbyname() results forever is wrong, so we have to let
111 * the true gethostbyname() worry about this
113 return gethostbyname(name);
117 int BIO_sock_init(void)
119 # ifdef OPENSSL_SYS_WINDOWS
120 static struct WSAData wsa_state;
122 if (!wsa_init_done) {
124 memset(&wsa_state, 0, sizeof(wsa_state));
126 * Not making wsa_state available to the rest of the code is formally
127 * wrong. But the structures we use are [believed to be] invariable
128 * among Winsock DLLs, while API availability is [expected to be]
129 * probed at run-time with DSO_global_lookup.
131 if (WSAStartup(0x0202, &wsa_state) != 0) {
132 FUNCerr("wsastartup", get_last_socket_error());
133 BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
137 # endif /* OPENSSL_SYS_WINDOWS */
139 extern int _watt_do_exit;
140 _watt_do_exit = 0; /* don't make sock_init() call exit() */
148 void bio_sock_cleanup_int(void)
150 # ifdef OPENSSL_SYS_WINDOWS
158 int BIO_socket_ioctl(int fd, long type, void *arg)
163 i = ioctlsocket(fd, type, (char *)arg);
165 # if defined(OPENSSL_SYS_VMS)
168 * VMS ioctl() can't tolerate a 64-bit "void *arg", but we
169 * observe that all the consumers pass in an "unsigned long *",
170 * so we arrange a local copy with a short pointer, and use
173 # if __INITIAL_POINTER_SIZE == 64
175 # pragma pointer_size save
176 # pragma pointer_size 32
177 unsigned long arg_32;
178 unsigned long *arg_32p;
179 # pragma pointer_size restore
181 arg_32 = *((unsigned long *)arg);
182 # else /* __INITIAL_POINTER_SIZE == 64 */
184 # endif /* __INITIAL_POINTER_SIZE == 64 [else] */
185 # else /* defined(OPENSSL_SYS_VMS) */
187 # endif /* defined(OPENSSL_SYS_VMS) [else] */
189 i = ioctlsocket(fd, type, ARG);
190 # endif /* __DJGPP__ */
192 FUNCerr("ioctlsocket", get_last_socket_error());
196 # if !OPENSSL_API_1_1_0
197 int BIO_get_accept_socket(char *host, int bind_mode)
199 int s = INVALID_SOCKET;
200 char *h = NULL, *p = NULL;
201 BIO_ADDRINFO *res = NULL;
203 if (!BIO_parse_hostserv(host, &h, &p, BIO_PARSE_PRIO_SERV))
204 return INVALID_SOCKET;
206 if (BIO_sock_init() != 1)
207 return INVALID_SOCKET;
209 if (BIO_lookup(h, p, BIO_LOOKUP_SERVER, AF_UNSPEC, SOCK_STREAM, &res) != 0)
212 if ((s = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
213 BIO_ADDRINFO_protocol(res), 0)) == INVALID_SOCKET) {
218 if (!BIO_listen(s, BIO_ADDRINFO_address(res),
219 bind_mode ? BIO_SOCK_REUSEADDR : 0)) {
225 BIO_ADDRINFO_free(res);
232 int BIO_accept(int sock, char **ip_port)
237 ret = BIO_accept_ex(sock, &res, 0);
238 if (ret == (int)INVALID_SOCKET) {
239 if (BIO_sock_should_retry(ret)) {
243 FUNCerr("accept", get_last_socket_error());
244 BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
248 if (ip_port != NULL) {
249 char *host = BIO_ADDR_hostname_string(&res, 1);
250 char *port = BIO_ADDR_service_string(&res, 1);
251 if (host != NULL && port != NULL)
252 *ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
256 if (*ip_port == NULL) {
257 BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
258 BIO_closesocket(ret);
259 ret = (int)INVALID_SOCKET;
261 strcpy(*ip_port, host);
262 strcat(*ip_port, ":");
263 strcat(*ip_port, port);
274 int BIO_set_tcp_ndelay(int s, int on)
277 # if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
288 ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
293 int BIO_socket_nbio(int s, int mode)
302 ret = BIO_socket_ioctl(s, FIONBIO, &l);
303 # elif defined(F_GETFL) && defined(F_SETFL) && (defined(O_NONBLOCK) || defined(FNDELAY))
304 /* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
306 l = fcntl(s, F_GETFL, 0);
308 FUNCerr("fcntl", get_last_sys_error());
311 # if defined(O_NONBLOCK)
314 l &= ~FNDELAY; /* BSD4.x */
317 # if defined(O_NONBLOCK)
320 l |= FNDELAY; /* BSD4.x */
323 ret = fcntl(s, F_SETFL, l);
326 FUNCerr("fcntl", get_last_sys_error());
330 /* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
331 BIOerr(BIO_F_BIO_SOCKET_NBIO, ERR_R_PASSED_INVALID_ARGUMENT);
337 int BIO_sock_info(int sock,
338 enum BIO_sock_info_type type, union BIO_sock_info_u *info)
341 case BIO_SOCK_INFO_ADDRESS:
345 addr_len = sizeof(*info->addr);
346 ret = getsockname(sock, BIO_ADDR_sockaddr_noconst(info->addr),
349 FUNCerr("getsockname", get_last_socket_error());
350 BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_GETSOCKNAME_ERROR);
353 if ((size_t)addr_len > sizeof(*info->addr)) {
354 BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS);
360 BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_UNKNOWN_INFO_TYPE);