/src/openssl30/crypto/bio/bio_sock.c

Source
/*
 * Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <stdlib.h>
#include "bio_local.h"
#ifndef OPENSSL_NO_SOCK
#define SOCKET_PROTOCOL IPPROTO_TCP
#ifdef SO_MAXCONN
#define MAX_LISTEN SO_MAXCONN
#elif defined(SOMAXCONN)
#define MAX_LISTEN SOMAXCONN
#else
#define MAX_LISTEN 32
#endif
#if defined(OPENSSL_SYS_WINDOWS)
static int wsa_init_done = 0;
#endif

#if defined __TANDEM
#include <unistd.h>
#include <sys/time.h> /* select */
#if defined(OPENSSL_TANDEM_FLOSS)
#include <floss.h(floss_select)>
#endif
#elif defined _WIN32
#include <winsock.h> /* for type fd_set */
#else
#include <unistd.h>
#if defined __VMS
#include <sys/socket.h>
#elif defined _HPUX_SOURCE
#include <sys/time.h>
#else
#include <sys/select.h>
#endif
#endif

#ifndef OPENSSL_NO_DEPRECATED_1_1_0
int BIO_get_host_ip(const char *str, unsigned char *ip)
{
    BIO_ADDRINFO *res = NULL;
    int ret = 0;

    if (BIO_sock_init() != 1)
        return 0; /* don't generate another error code here */

    if (BIO_lookup(str, NULL, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
        size_t l;

        if (BIO_ADDRINFO_family(res) != AF_INET) {
            ERR_raise(ERR_LIB_BIO, BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
        } else if (BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), NULL, &l)) {
            /*
             * Because only AF_INET addresses will reach this far, we can assert
             * that l should be 4
             */
            if (ossl_assert(l == 4))
                ret = BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), ip, &l);
        }
        BIO_ADDRINFO_free(res);
    } else {
        ERR_add_error_data(2, "host=", str);
    }

    return ret;
}

int BIO_get_port(const char *str, unsigned short *port_ptr)
{
    BIO_ADDRINFO *res = NULL;
    int ret = 0;

    if (str == NULL) {
        ERR_raise(ERR_LIB_BIO, BIO_R_NO_PORT_DEFINED);
        return 0;
    }

    if (BIO_sock_init() != 1)
        return 0; /* don't generate another error code here */

    if (BIO_lookup(NULL, str, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
        if (BIO_ADDRINFO_family(res) != AF_INET) {
            ERR_raise(ERR_LIB_BIO, BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET);
        } else {
            *port_ptr = ntohs(BIO_ADDR_rawport(BIO_ADDRINFO_address(res)));
            ret = 1;
        }
        BIO_ADDRINFO_free(res);
    } else {
        ERR_add_error_data(2, "host=", str);
    }

    return ret;
}
#endif

int BIO_sock_error(int sock)
{
    int j = 0, i;
    socklen_t size = sizeof(j);

    /*
     * Note: under Windows the third parameter is of type (char *) whereas
     * under other systems it is (void *) if you don't have a cast it will
     * choke the compiler: if you do have a cast then you can either go for
     * (char *) or (void *).
     */
    i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, &size);
    if (i < 0)
        return get_last_socket_error();
    else
        return j;
}

#ifndef OPENSSL_NO_DEPRECATED_1_1_0
struct hostent *BIO_gethostbyname(const char *name)
{
    /*
     * Caching gethostbyname() results forever is wrong, so we have to let
     * the true gethostbyname() worry about this
     */
    return gethostbyname(name);
}
#endif

int BIO_sock_init(void)
{
#ifdef OPENSSL_SYS_WINDOWS
    static struct WSAData wsa_state;

    if (!wsa_init_done) {
        wsa_init_done = 1;
        memset(&wsa_state, 0, sizeof(wsa_state));
        /*
         * Not making wsa_state available to the rest of the code is formally
         * wrong. But the structures we use are [believed to be] invariable
         * among Winsock DLLs, while API availability is [expected to be]
         * probed at run-time with DSO_global_lookup.
         */
        if (WSAStartup(0x0202, &wsa_state) != 0) {
            ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
                "calling wsastartup()");
            ERR_raise(ERR_LIB_BIO, BIO_R_WSASTARTUP);
            return -1;
        }
    }
#endif /* OPENSSL_SYS_WINDOWS */
#ifdef WATT32
    extern int _watt_do_exit;
    _watt_do_exit = 0; /* don't make sock_init() call exit() */
    if (sock_init())
        return -1;
#endif

    return 1;
}

void bio_sock_cleanup_int(void)
{
#ifdef OPENSSL_SYS_WINDOWS
    if (wsa_init_done) {
        wsa_init_done = 0;
        WSACleanup();
    }
#endif
}

int BIO_socket_ioctl(int fd, long type, void *arg)
{
    int i;

#ifdef __DJGPP__
    i = ioctlsocket(fd, type, (char *)arg);
#else
#if defined(OPENSSL_SYS_VMS)
    /*-
     * 2011-02-18 SMS.
     * VMS ioctl() can't tolerate a 64-bit "void *arg", but we
     * observe that all the consumers pass in an "unsigned long *",
     * so we arrange a local copy with a short pointer, and use
     * that, instead.
     */
#if __INITIAL_POINTER_SIZE == 64
#define ARG arg_32p
#pragma pointer_size save
#pragma pointer_size 32
    unsigned long arg_32;
    unsigned long *arg_32p;
#pragma pointer_size restore
    arg_32p = &arg_32;
    arg_32 = *((unsigned long *)arg);
#else /* __INITIAL_POINTER_SIZE == 64 */
#define ARG arg
#endif /* __INITIAL_POINTER_SIZE == 64 [else] */
#else /* defined(OPENSSL_SYS_VMS) */
#define ARG arg
#endif /* defined(OPENSSL_SYS_VMS) [else] */

    i = ioctlsocket(fd, type, ARG);
#endif /* __DJGPP__ */
    if (i < 0)
        ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
            "calling ioctlsocket()");
    return i;
}

#ifndef OPENSSL_NO_DEPRECATED_1_1_0
int BIO_get_accept_socket(char *host, int bind_mode)
{
    int s = INVALID_SOCKET;
    char *h = NULL, *p = NULL;
    BIO_ADDRINFO *res = NULL;

    if (!BIO_parse_hostserv(host, &h, &p, BIO_PARSE_PRIO_SERV))
        return INVALID_SOCKET;

    if (BIO_sock_init() != 1)
        goto err;

    if (BIO_lookup(h, p, BIO_LOOKUP_SERVER, AF_UNSPEC, SOCK_STREAM, &res) == 0)
        goto err;

    if ((s = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
             BIO_ADDRINFO_protocol(res), 0))
        == INVALID_SOCKET) {
        s = INVALID_SOCKET;
        goto err;
    }

    if (!BIO_listen(s, BIO_ADDRINFO_address(res),
            bind_mode ? BIO_SOCK_REUSEADDR : 0)) {
        BIO_closesocket(s);
        s = INVALID_SOCKET;
    }

err:
    BIO_ADDRINFO_free(res);
    OPENSSL_free(h);
    OPENSSL_free(p);

    return s;
}

int BIO_accept(int sock, char **ip_port)
{
    BIO_ADDR res;
    int ret = -1;

    ret = BIO_accept_ex(sock, &res, 0);
    if (ret == (int)INVALID_SOCKET) {
        if (BIO_sock_should_retry(ret)) {
            ret = -2;
            goto end;
        }
        ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
            "calling accept()");
        ERR_raise(ERR_LIB_BIO, BIO_R_ACCEPT_ERROR);
        goto end;
    }

    if (ip_port != NULL) {
        char *host = BIO_ADDR_hostname_string(&res, 1);
        char *port = BIO_ADDR_service_string(&res, 1);
        if (host != NULL && port != NULL)
            *ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
        else
            *ip_port = NULL;

        if (*ip_port == NULL) {
            ERR_raise(ERR_LIB_BIO, ERR_R_MALLOC_FAILURE);
            BIO_closesocket(ret);
            ret = (int)INVALID_SOCKET;
        } else {
            strcpy(*ip_port, host);
            strcat(*ip_port, ":");
            strcat(*ip_port, port);
        }
        OPENSSL_free(host);
        OPENSSL_free(port);
    }

end:
    return ret;
}
#endif

int BIO_set_tcp_ndelay(int s, int on)
{
    int ret = 0;
#if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
    int opt;

#ifdef SOL_TCP
    opt = SOL_TCP;
#else
#ifdef IPPROTO_TCP
    opt = IPPROTO_TCP;
#endif
#endif

    ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
#endif
    return (ret == 0);
}

int BIO_socket_nbio(int s, int mode)
{
    int ret = -1;
    int l;

    l = mode;
#ifdef FIONBIO
    l = mode;

    ret = BIO_socket_ioctl(s, FIONBIO, &l);
#elif defined(F_GETFL) && defined(F_SETFL) && (defined(O_NONBLOCK) || defined(FNDELAY))
    /* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */

    l = fcntl(s, F_GETFL, 0);
    if (l == -1) {
        ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
            "calling fcntl()");
        ret = -1;
    } else {
#if defined(O_NONBLOCK)
        l &= ~O_NONBLOCK;
#else
        l &= ~FNDELAY; /* BSD4.x */
#endif
        if (mode) {
#if defined(O_NONBLOCK)
            l |= O_NONBLOCK;
#else
            l |= FNDELAY; /* BSD4.x */
#endif
        }
        ret = fcntl(s, F_SETFL, l);

        if (ret < 0) {
            ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
                "calling fcntl()");
        }
    }
#else
    /* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
    ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_INVALID_ARGUMENT);
#endif

    return (ret == 0);
}

int BIO_sock_info(int sock,
    enum BIO_sock_info_type type, union BIO_sock_info_u *info)
{
    switch (type) {
    case BIO_SOCK_INFO_ADDRESS: {
        socklen_t addr_len;
        int ret = 0;
        addr_len = sizeof(*info->addr);
        ret = getsockname(sock, BIO_ADDR_sockaddr_noconst(info->addr),
            &addr_len);
        if (ret == -1) {
            ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
                "calling getsockname()");
            ERR_raise(ERR_LIB_BIO, BIO_R_GETSOCKNAME_ERROR);
            return 0;
        }
        if ((size_t)addr_len > sizeof(*info->addr)) {
            ERR_raise(ERR_LIB_BIO, BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS);
            return 0;
        }
    } break;
    default:
        ERR_raise(ERR_LIB_BIO, BIO_R_UNKNOWN_INFO_TYPE);
        return 0;
    }
    return 1;
}

/*
 * Wait on fd at most until max_time; succeed immediately if max_time == 0.
 * If for_read == 0 then assume to wait for writing, else wait for reading.
 * Returns -1 on error, 0 on timeout, and 1 on success.
 */
int BIO_socket_wait(int fd, int for_read, time_t max_time)
{
    fd_set confds;
    struct timeval tv;
    time_t now;

#ifdef _WIN32
    if ((SOCKET)fd == INVALID_SOCKET)
#else
    if (fd < 0 || fd >= FD_SETSIZE)
#endif
        return -1;
    if (max_time == 0)
        return 1;

    now = time(NULL);
    if (max_time < now)
        return 0;

    FD_ZERO(&confds);
    openssl_fdset(fd, &confds);
    tv.tv_usec = 0;
    tv.tv_sec = (long)(max_time - now); /* might overflow */
    return select(fd + 1, for_read ? &confds : NULL,
        for_read ? NULL : &confds, NULL, &tv);
}
#endif /* !defined(OPENSSL_NO_SOCK) */

Coverage Report

Created: 2025-12-31 06:58

Line	Count	Source
1		/*
2		* Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
3		*
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
8		*/
9
10		#include <stdio.h>
11		#include <stdlib.h>
12		#include "bio_local.h"
13		#ifndef OPENSSL_NO_SOCK
14		#define SOCKET_PROTOCOL IPPROTO_TCP
15		#ifdef SO_MAXCONN
16		#define MAX_LISTEN SO_MAXCONN
17		#elif defined(SOMAXCONN)
18		#define MAX_LISTEN SOMAXCONN
19		#else
20		#define MAX_LISTEN 32
21		#endif
22		#if defined(OPENSSL_SYS_WINDOWS)
23		static int wsa_init_done = 0;
24		#endif
25
26		#if defined __TANDEM
27		#include <unistd.h>
28		#include <sys/time.h> /* select */
29		#if defined(OPENSSL_TANDEM_FLOSS)
30		#include <floss.h(floss_select)>
31		#endif
32		#elif defined _WIN32
33		#include <winsock.h> /* for type fd_set */
34		#else
35		#include <unistd.h>
36		#if defined __VMS
37		#include <sys/socket.h>
38		#elif defined _HPUX_SOURCE
39		#include <sys/time.h>
40		#else
41		#include <sys/select.h>
42		#endif
43		#endif
44
45		#ifndef OPENSSL_NO_DEPRECATED_1_1_0
46		int BIO_get_host_ip(const char str, unsigned char ip)
47	0	{
48	0	BIO_ADDRINFO *res = NULL;
49	0	int ret = 0;
50
51	0	if (BIO_sock_init() != 1)
52	0	return 0; /* don't generate another error code here */
53
54	0	if (BIO_lookup(str, NULL, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
55	0	size_t l;
56
57	0	if (BIO_ADDRINFO_family(res) != AF_INET) {
58	0	ERR_raise(ERR_LIB_BIO, BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
59	0	} else if (BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), NULL, &l)) {
60		/*
61		* Because only AF_INET addresses will reach this far, we can assert
62		* that l should be 4
63		*/
64	0	if (ossl_assert(l == 4))
65	0	ret = BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), ip, &l);
66	0	}
67	0	BIO_ADDRINFO_free(res);
68	0	} else {
69	0	ERR_add_error_data(2, "host=", str);
70	0	}
71
72	0	return ret;
73	0	}
74
75		int BIO_get_port(const char str, unsigned short port_ptr)
76	0	{
77	0	BIO_ADDRINFO *res = NULL;
78	0	int ret = 0;
79
80	0	if (str == NULL) {
81	0	ERR_raise(ERR_LIB_BIO, BIO_R_NO_PORT_DEFINED);
82	0	return 0;
83	0	}
84
85	0	if (BIO_sock_init() != 1)
86	0	return 0; /* don't generate another error code here */
87
88	0	if (BIO_lookup(NULL, str, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
89	0	if (BIO_ADDRINFO_family(res) != AF_INET) {
90	0	ERR_raise(ERR_LIB_BIO, BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET);
91	0	} else {
92	0	*port_ptr = ntohs(BIO_ADDR_rawport(BIO_ADDRINFO_address(res)));
93	0	ret = 1;
94	0	}
95	0	BIO_ADDRINFO_free(res);
96	0	} else {
97	0	ERR_add_error_data(2, "host=", str);
98	0	}
99
100	0	return ret;
101	0	}
102		#endif
103
104		int BIO_sock_error(int sock)
105	0	{
106	0	int j = 0, i;
107	0	socklen_t size = sizeof(j);
108
109		/*
110		* Note: under Windows the third parameter is of type (char *) whereas
111		* under other systems it is (void *) if you don't have a cast it will
112		* choke the compiler: if you do have a cast then you can either go for
113		* (char ) or (void ).
114		*/
115	0	i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, &size);
116	0	if (i < 0)
117	0	return get_last_socket_error();
118	0	else
119	0	return j;
120	0	}
121
122		#ifndef OPENSSL_NO_DEPRECATED_1_1_0
123		struct hostent BIO_gethostbyname(const char name)
124	0	{
125		/*
126		* Caching gethostbyname() results forever is wrong, so we have to let
127		* the true gethostbyname() worry about this
128		*/
129	0	return gethostbyname(name);
130	0	}
131		#endif
132
133		int BIO_sock_init(void)
134	0	{
135		#ifdef OPENSSL_SYS_WINDOWS
136		static struct WSAData wsa_state;
137
138		if (!wsa_init_done) {
139		wsa_init_done = 1;
140		memset(&wsa_state, 0, sizeof(wsa_state));
141		/*
142		* Not making wsa_state available to the rest of the code is formally
143		* wrong. But the structures we use are [believed to be] invariable
144		* among Winsock DLLs, while API availability is [expected to be]
145		* probed at run-time with DSO_global_lookup.
146		*/
147		if (WSAStartup(0x0202, &wsa_state) != 0) {
148		ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
149		"calling wsastartup()");
150		ERR_raise(ERR_LIB_BIO, BIO_R_WSASTARTUP);
151		return -1;
152		}
153		}
154		#endif /* OPENSSL_SYS_WINDOWS */
155		#ifdef WATT32
156		extern int _watt_do_exit;
157		_watt_do_exit = 0; /* don't make sock_init() call exit() */
158		if (sock_init())
159		return -1;
160		#endif
161
162	0	return 1;
163	0	}
164
165		void bio_sock_cleanup_int(void)
166	220	{
167		#ifdef OPENSSL_SYS_WINDOWS
168		if (wsa_init_done) {
169		wsa_init_done = 0;
170		WSACleanup();
171		}
172		#endif
173	220	}
174
175		int BIO_socket_ioctl(int fd, long type, void *arg)
176	0	{
177	0	int i;
178
179		#ifdef __DJGPP__
180		i = ioctlsocket(fd, type, (char *)arg);
181		#else
182		#if defined(OPENSSL_SYS_VMS)
183		/*-
184		* 2011-02-18 SMS.
185		* VMS ioctl() can't tolerate a 64-bit "void *arg", but we
186		* observe that all the consumers pass in an "unsigned long *",
187		* so we arrange a local copy with a short pointer, and use
188		* that, instead.
189		*/
190		#if __INITIAL_POINTER_SIZE == 64
191		#define ARG arg_32p
192		#pragma pointer_size save
193		#pragma pointer_size 32
194		unsigned long arg_32;
195		unsigned long *arg_32p;
196		#pragma pointer_size restore
197		arg_32p = &arg_32;
198		arg_32 = ((unsigned long )arg);
199		#else /* __INITIAL_POINTER_SIZE == 64 */
200		#define ARG arg
201		#endif /* __INITIAL_POINTER_SIZE == 64 [else] */
202		#else /* defined(OPENSSL_SYS_VMS) */
203	0	#define ARG arg
204	0	#endif /* defined(OPENSSL_SYS_VMS) [else] */
205
206	0	i = ioctlsocket(fd, type, ARG);
207	0	#endif /* __DJGPP__ */
208	0	if (i < 0)
209	0	ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
210	0	"calling ioctlsocket()");
211	0	return i;
212	0	}
213
214		#ifndef OPENSSL_NO_DEPRECATED_1_1_0
215		int BIO_get_accept_socket(char *host, int bind_mode)
216	0	{
217	0	int s = INVALID_SOCKET;
218	0	char h = NULL, p = NULL;
219	0	BIO_ADDRINFO *res = NULL;
220
221	0	if (!BIO_parse_hostserv(host, &h, &p, BIO_PARSE_PRIO_SERV))
222	0	return INVALID_SOCKET;
223
224	0	if (BIO_sock_init() != 1)
225	0	goto err;
226
227	0	if (BIO_lookup(h, p, BIO_LOOKUP_SERVER, AF_UNSPEC, SOCK_STREAM, &res) == 0)
228	0	goto err;
229
230	0	if ((s = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
231	0	BIO_ADDRINFO_protocol(res), 0))
232	0	== INVALID_SOCKET) {
233	0	s = INVALID_SOCKET;
234	0	goto err;
235	0	}
236
237	0	if (!BIO_listen(s, BIO_ADDRINFO_address(res),
238	0	bind_mode ? BIO_SOCK_REUSEADDR : 0)) {
239	0	BIO_closesocket(s);
240	0	s = INVALID_SOCKET;
241	0	}
242
243	0	err:
244	0	BIO_ADDRINFO_free(res);
245	0	OPENSSL_free(h);
246	0	OPENSSL_free(p);
247
248	0	return s;
249	0	}
250
251		int BIO_accept(int sock, char **ip_port)
252	0	{
253	0	BIO_ADDR res;
254	0	int ret = -1;
255
256	0	ret = BIO_accept_ex(sock, &res, 0);
257	0	if (ret == (int)INVALID_SOCKET) {
258	0	if (BIO_sock_should_retry(ret)) {
259	0	ret = -2;
260	0	goto end;
261	0	}
262	0	ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
263	0	"calling accept()");
264	0	ERR_raise(ERR_LIB_BIO, BIO_R_ACCEPT_ERROR);
265	0	goto end;
266	0	}
267
268	0	if (ip_port != NULL) {
269	0	char *host = BIO_ADDR_hostname_string(&res, 1);
270	0	char *port = BIO_ADDR_service_string(&res, 1);
271	0	if (host != NULL && port != NULL)
272	0	*ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
273	0	else
274	0	*ip_port = NULL;
275
276	0	if (*ip_port == NULL) {
277	0	ERR_raise(ERR_LIB_BIO, ERR_R_MALLOC_FAILURE);
278	0	BIO_closesocket(ret);
279	0	ret = (int)INVALID_SOCKET;
280	0	} else {
281	0	strcpy(*ip_port, host);
282	0	strcat(*ip_port, ":");
283	0	strcat(*ip_port, port);
284	0	}
285	0	OPENSSL_free(host);
286	0	OPENSSL_free(port);
287	0	}
288
289	0	end:
290	0	return ret;
291	0	}
292		#endif
293
294		int BIO_set_tcp_ndelay(int s, int on)
295	0	{
296	0	int ret = 0;
297	0	#if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) \|\| defined(SOL_TCP))
298	0	int opt;
299
300	0	#ifdef SOL_TCP
301	0	opt = SOL_TCP;
302		#else
303		#ifdef IPPROTO_TCP
304		opt = IPPROTO_TCP;
305		#endif
306		#endif
307
308	0	ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
309	0	#endif
310	0	return (ret == 0);
311	0	}
312
313		int BIO_socket_nbio(int s, int mode)
314	0	{
315	0	int ret = -1;
316	0	int l;
317
318	0	l = mode;
319	0	#ifdef FIONBIO
320	0	l = mode;
321
322	0	ret = BIO_socket_ioctl(s, FIONBIO, &l);
323		#elif defined(F_GETFL) && defined(F_SETFL) && (defined(O_NONBLOCK) \|\| defined(FNDELAY))
324		/* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
325
326		l = fcntl(s, F_GETFL, 0);
327		if (l == -1) {
328		ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
329		"calling fcntl()");
330		ret = -1;
331		} else {
332		#if defined(O_NONBLOCK)
333		l &= ~O_NONBLOCK;
334		#else
335		l &= ~FNDELAY; /* BSD4.x */
336		#endif
337		if (mode) {
338		#if defined(O_NONBLOCK)
339		l \|= O_NONBLOCK;
340		#else
341		l \|= FNDELAY; /* BSD4.x */
342		#endif
343		}
344		ret = fcntl(s, F_SETFL, l);
345
346		if (ret < 0) {
347		ERR_raise_data(ERR_LIB_SYS, get_last_sys_error(),
348		"calling fcntl()");
349		}
350		}
351		#else
352		/* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
353		ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_INVALID_ARGUMENT);
354		#endif
355
356	0	return (ret == 0);
357	0	}
358
359		int BIO_sock_info(int sock,
360		enum BIO_sock_info_type type, union BIO_sock_info_u *info)
361	0	{
362	0	switch (type) {
363	0	case BIO_SOCK_INFO_ADDRESS: {
364	0	socklen_t addr_len;
365	0	int ret = 0;
366	0	addr_len = sizeof(*info->addr);
367	0	ret = getsockname(sock, BIO_ADDR_sockaddr_noconst(info->addr),
368	0	&addr_len);
369	0	if (ret == -1) {
370	0	ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
371	0	"calling getsockname()");
372	0	ERR_raise(ERR_LIB_BIO, BIO_R_GETSOCKNAME_ERROR);
373	0	return 0;
374	0	}
375	0	if ((size_t)addr_len > sizeof(*info->addr)) {
376	0	ERR_raise(ERR_LIB_BIO, BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS);
377	0	return 0;
378	0	}
379	0	} break;
380	0	default:
381	0	ERR_raise(ERR_LIB_BIO, BIO_R_UNKNOWN_INFO_TYPE);
382	0	return 0;
383	0	}
384	0	return 1;
385	0	}
386
387		/*
388		* Wait on fd at most until max_time; succeed immediately if max_time == 0.
389		* If for_read == 0 then assume to wait for writing, else wait for reading.
390		* Returns -1 on error, 0 on timeout, and 1 on success.
391		*/
392		int BIO_socket_wait(int fd, int for_read, time_t max_time)
393	0	{
394	0	fd_set confds;
395	0	struct timeval tv;
396	0	time_t now;
397
398		#ifdef _WIN32
399		if ((SOCKET)fd == INVALID_SOCKET)
400		#else
401	0	if (fd < 0 \|\| fd >= FD_SETSIZE)
402	0	#endif
403	0	return -1;
404	0	if (max_time == 0)
405	0	return 1;
406
407	0	now = time(NULL);
408	0	if (max_time < now)
409	0	return 0;
410
411	0	FD_ZERO(&confds);
412	0	openssl_fdset(fd, &confds);
413	0	tv.tv_usec = 0;
414	0	tv.tv_sec = (long)(max_time - now); /* might overflow */
415	0	return select(fd + 1, for_read ? &confds : NULL,
416	0	for_read ? NULL : &confds, NULL, &tv);
417	0	}
418		#endif /* !defined(OPENSSL_NO_SOCK) */