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
12 #include "bio_local.h"
13 #ifndef OPENSSL_NO_SOCK
14 # define SOCKET_PROTOCOL IPPROTO_TCP
16 # define MAX_LISTEN SO_MAXCONN
17 # elif defined(SOMAXCONN)
18 # define MAX_LISTEN SOMAXCONN
20 # define MAX_LISTEN 32
22 # if defined(OPENSSL_SYS_WINDOWS)
23 static int wsa_init_done = 0;
28 # include <sys/select.h>
30 # include <winsock.h> /* for type fd_set */
33 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
34 int BIO_get_host_ip(const char *str, unsigned char *ip)
36 BIO_ADDRINFO *res = NULL;
39 if (BIO_sock_init() != 1)
40 return 0; /* don't generate another error code here */
42 if (BIO_lookup(str, NULL, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
45 if (BIO_ADDRINFO_family(res) != AF_INET) {
46 BIOerr(BIO_F_BIO_GET_HOST_IP,
47 BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
48 } else if (BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), NULL, &l)) {
50 * Because only AF_INET addresses will reach this far, we can assert
53 if (ossl_assert(l == 4))
54 ret = BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), ip, &l);
56 BIO_ADDRINFO_free(res);
58 ERR_add_error_data(2, "host=", str);
64 int BIO_get_port(const char *str, unsigned short *port_ptr)
66 BIO_ADDRINFO *res = NULL;
70 BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED);
74 if (BIO_sock_init() != 1)
75 return 0; /* don't generate another error code here */
77 if (BIO_lookup(NULL, str, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
78 if (BIO_ADDRINFO_family(res) != AF_INET) {
79 BIOerr(BIO_F_BIO_GET_PORT,
80 BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET);
82 *port_ptr = ntohs(BIO_ADDR_rawport(BIO_ADDRINFO_address(res)));
85 BIO_ADDRINFO_free(res);
87 ERR_add_error_data(2, "host=", str);
94 int BIO_sock_error(int sock)
97 socklen_t size = sizeof(j);
100 * Note: under Windows the third parameter is of type (char *) whereas
101 * under other systems it is (void *) if you don't have a cast it will
102 * choke the compiler: if you do have a cast then you can either go for
103 * (char *) or (void *).
105 i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, &size);
107 return get_last_socket_error();
112 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
113 struct hostent *BIO_gethostbyname(const char *name)
116 * Caching gethostbyname() results forever is wrong, so we have to let
117 * the true gethostbyname() worry about this
119 return gethostbyname(name);
123 int BIO_sock_init(void)
125 # ifdef OPENSSL_SYS_WINDOWS
126 static struct WSAData wsa_state;
128 if (!wsa_init_done) {
130 memset(&wsa_state, 0, sizeof(wsa_state));
132 * Not making wsa_state available to the rest of the code is formally
133 * wrong. But the structures we use are [believed to be] invariable
134 * among Winsock DLLs, while API availability is [expected to be]
135 * probed at run-time with DSO_global_lookup.
137 if (WSAStartup(0x0202, &wsa_state) != 0) {
138 ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
139 "calling wsastartup()");
140 BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
144 # endif /* OPENSSL_SYS_WINDOWS */
146 extern int _watt_do_exit;
147 _watt_do_exit = 0; /* don't make sock_init() call exit() */
155 void bio_sock_cleanup_int(void)
157 # ifdef OPENSSL_SYS_WINDOWS
165 int BIO_socket_ioctl(int fd, long type, void *arg)
170 i = ioctlsocket(fd, type, (char *)arg);
172 # if defined(OPENSSL_SYS_VMS)
175 * VMS ioctl() can't tolerate a 64-bit "void *arg", but we
176 * observe that all the consumers pass in an "unsigned long *",
177 * so we arrange a local copy with a short pointer, and use
180 # if __INITIAL_POINTER_SIZE == 64
182 # pragma pointer_size save
183 # pragma pointer_size 32
184 unsigned long arg_32;
185 unsigned long *arg_32p;
186 # pragma pointer_size restore
188 arg_32 = *((unsigned long *)arg);
189 # else /* __INITIAL_POINTER_SIZE == 64 */
191 # endif /* __INITIAL_POINTER_SIZE == 64 [else] */
192 # else /* defined(OPENSSL_SYS_VMS) */
194 # endif /* defined(OPENSSL_SYS_VMS) [else] */
196 i = ioctlsocket(fd, type, ARG);
197 # endif /* __DJGPP__ */
199 ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
200 "calling ioctlsocket()");
204 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
205 int BIO_get_accept_socket(char *host, int bind_mode)
207 int s = INVALID_SOCKET;
208 char *h = NULL, *p = NULL;
209 BIO_ADDRINFO *res = NULL;
211 if (!BIO_parse_hostserv(host, &h, &p, BIO_PARSE_PRIO_SERV))
212 return INVALID_SOCKET;
214 if (BIO_sock_init() != 1)
215 return INVALID_SOCKET;
217 if (BIO_lookup(h, p, BIO_LOOKUP_SERVER, AF_UNSPEC, SOCK_STREAM, &res) != 0)
220 if ((s = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
221 BIO_ADDRINFO_protocol(res), 0)) == INVALID_SOCKET) {
226 if (!BIO_listen(s, BIO_ADDRINFO_address(res),
227 bind_mode ? BIO_SOCK_REUSEADDR : 0)) {
233 BIO_ADDRINFO_free(res);
240 int BIO_accept(int sock, char **ip_port)
245 ret = BIO_accept_ex(sock, &res, 0);
246 if (ret == (int)INVALID_SOCKET) {
247 if (BIO_sock_should_retry(ret)) {
251 ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
253 BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
257 if (ip_port != NULL) {
258 char *host = BIO_ADDR_hostname_string(&res, 1);
259 char *port = BIO_ADDR_service_string(&res, 1);
260 if (host != NULL && port != NULL)
261 *ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
265 if (*ip_port == NULL) {
266 BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
267 BIO_closesocket(ret);
268 ret = (int)INVALID_SOCKET;
270 strcpy(*ip_port, host);
271 strcat(*ip_port, ":");
272 strcat(*ip_port, port);
283 int BIO_set_tcp_ndelay(int s, int on)
286 # if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
297 ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
302 int BIO_socket_nbio(int s, int mode)
311 ret = BIO_socket_ioctl(s, FIONBIO, &l);
312 # elif defined(F_GETFL) && defined(F_SETFL) && (defined(O_NONBLOCK) || defined(FNDELAY))
313 /* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
315 l = fcntl(s, F_GETFL, 0);
317 ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
321 # if defined(O_NONBLOCK)
324 l &= ~FNDELAY; /* BSD4.x */
327 # if defined(O_NONBLOCK)
330 l |= FNDELAY; /* BSD4.x */
333 ret = fcntl(s, F_SETFL, l);
336 ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
341 /* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
342 BIOerr(BIO_F_BIO_SOCKET_NBIO, ERR_R_PASSED_INVALID_ARGUMENT);
348 int BIO_sock_info(int sock,
349 enum BIO_sock_info_type type, union BIO_sock_info_u *info)
352 case BIO_SOCK_INFO_ADDRESS:
356 addr_len = sizeof(*info->addr);
357 ret = getsockname(sock, BIO_ADDR_sockaddr_noconst(info->addr),
360 ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
361 "calling getsockname()");
362 BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_GETSOCKNAME_ERROR);
365 if ((size_t)addr_len > sizeof(*info->addr)) {
366 BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS);
372 BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_UNKNOWN_INFO_TYPE);
378 /* TODO simplify by BIO_socket_wait() further other uses of select() in apps/ */
380 * Wait on fd at most until max_time; succeed immediately if max_time == 0.
381 * If for_read == 0 then assume to wait for writing, else wait for reading.
382 * Returns -1 on error, 0 on timeout, and 1 on success.
384 int BIO_socket_wait(int fd, int for_read, time_t max_time)
398 openssl_fdset(fd, &confds);
400 tv.tv_sec = (long)(max_time - now); /* might overflow */
401 return select(fd + 1, for_read ? &confds : NULL,
402 for_read ? NULL : &confds, NULL, &tv);
404 #endif /* !defined(OPENSSL_NO_SOCK) */