Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/bio/b_sock.c	Lines:	52	206	25.2 %
Date:	2016-12-06	Branches:	30	130	23.1 %


/* $OpenBSD: b_sock.c,v 1.61 2014/12/03 22:14:38 bcook Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <sys/ioctl.h>
#include <sys/socket.h>
#include <string.h>

#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/tcp.h>

#include <errno.h>
#include <limits.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <openssl/bio.h>
#include <openssl/buffer.h>
#include <openssl/err.h>

int
BIO_get_host_ip(const char *str, unsigned char *ip)
{
	int i;
	int err = 1;
	struct hostent *he;

	if (inet_pton(AF_INET, str, ip) == 1)
		return (1);

	/* do a gethostbyname */
	CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
	he = BIO_gethostbyname(str);
	if (he == NULL) {
		BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP);
		goto err;
	}

	if (he->h_addrtype != AF_INET) {
		BIOerr(BIO_F_BIO_GET_HOST_IP,
		    BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
		goto err;
	}
	for (i = 0; i < 4; i++)
		ip[i] = he->h_addr_list[0][i];
	err = 0;

err:
	CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
	if (err) {
		ERR_asprintf_error_data("host=%s", str);
		return 0;
	} else
		return 1;
}

int
BIO_get_port(const char *str, unsigned short *port_ptr)
{
	struct addrinfo *res = NULL;
	struct addrinfo hints = {
		.ai_family = AF_UNSPEC,
		.ai_socktype = SOCK_STREAM,
		.ai_flags = AI_PASSIVE,
	};
	long port;
	char *ep;

	if (str == NULL) {
		BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_SPECIFIED);
		return (0);
	}

	errno = 0;
	port = strtol(str, &ep, 10);
	if (str[0] != '\0' && *ep == '\0') {
		if (errno == ERANGE && (port == LONG_MAX || port == LONG_MIN)) {
			BIOerr(BIO_F_BIO_GET_PORT, BIO_R_INVALID_PORT_NUMBER);
			return (0);
		}
		if (port < 0 || port > 65535) {
			BIOerr(BIO_F_BIO_GET_PORT, BIO_R_INVALID_PORT_NUMBER);
			return (0);
		}
		goto done;
	}

	if (getaddrinfo(NULL, str, &hints, &res) == 0) {
		port = ntohs(((struct sockaddr_in *)(res->ai_addr))->sin_port);
		goto done;
	}

	if (strcmp(str, "http") == 0)
		port = 80;
	else if (strcmp(str, "telnet") == 0)
		port = 23;
	else if (strcmp(str, "socks") == 0)
		port = 1080;
	else if (strcmp(str, "https") == 0)
		port = 443;
	else if (strcmp(str, "ssl") == 0)
		port = 443;
	else if (strcmp(str, "ftp") == 0)
		port = 21;
	else if (strcmp(str, "gopher") == 0)
		port = 70;
	else {
		SYSerr(SYS_F_GETSERVBYNAME, errno);
		ERR_asprintf_error_data("service='%s'", str);
		return (0);
	}

done:
	if (res)
		freeaddrinfo(res);
	*port_ptr = (unsigned short)port;
	return (1);
}

int
BIO_sock_error(int sock)
{
	socklen_t len;
	int err;

	len = sizeof(err);
	if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &err, &len) != 0)
		return (1);
	return (err);
}

struct hostent *
BIO_gethostbyname(const char *name)
{
	return gethostbyname(name);
}

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

	ret = ioctl(fd, type, arg);
	if (ret < 0)
		SYSerr(SYS_F_IOCTLSOCKET, errno);
	return (ret);
}

int
BIO_get_accept_socket(char *host, int bind_mode)
{
	int ret = 0;
	union {
		struct sockaddr sa;
		struct sockaddr_in sa_in;
		struct sockaddr_in6 sa_in6;
	} server, client;
	int s = -1, cs, addrlen;
	unsigned char ip[4];
	unsigned short port;
	char *str = NULL, *e;
	char *h, *p;
	unsigned long l;
	int err_num;

	if (host == NULL || (str = strdup(host)) == NULL)
		return (-1);

	h = p = NULL;
	h = str;
	for (e = str; *e; e++) {
		if (*e == ':') {
			p = e;
		} else if (*e == '/') {
			*e = '\0';
			break;
		}
	}
	/* points at last ':', '::port' is special [see below] */
	if (p)
		*p++ = '\0';
	else
		p = h, h = NULL;

	do {
		struct addrinfo *res, hint;

		/*
		 * '::port' enforces IPv6 wildcard listener. Some OSes,
		 * e.g. Solaris, default to IPv6 without any hint. Also
		 * note that commonly IPv6 wildchard socket can service
		 * IPv4 connections just as well...
		 */
		memset(&hint, 0, sizeof(hint));
		hint.ai_flags = AI_PASSIVE;
		if (h) {
			if (strchr(h, ':')) {
				if (h[1] == '\0')
					h = NULL;
				hint.ai_family = AF_INET6;
			} else if (h[0] == '*' && h[1] == '\0') {
				hint.ai_family = AF_INET;
				h = NULL;
			}
		}

		if (getaddrinfo(h, p, &hint, &res))
			break;

		addrlen = res->ai_addrlen <= sizeof(server) ?
		    res->ai_addrlen : sizeof(server);
		memcpy(&server, res->ai_addr, addrlen);

		freeaddrinfo(res);
		goto again;
	} while (0);

	if (!BIO_get_port(p, &port))
		goto err;

	memset((char *)&server, 0, sizeof(server));
	server.sa_in.sin_family = AF_INET;
	server.sa_in.sin_port = htons(port);
	addrlen = sizeof(server.sa_in);

	if (h == NULL || strcmp(h, "*") == 0)
		server.sa_in.sin_addr.s_addr = INADDR_ANY;
	else {
		if (!BIO_get_host_ip(h, &(ip[0])))
			goto err;
		l = (unsigned long)((unsigned long)ip[0]<<24L)|
		    ((unsigned long)ip[1]<<16L)|
		    ((unsigned long)ip[2]<< 8L)|
		    ((unsigned long)ip[3]);
		server.sa_in.sin_addr.s_addr = htonl(l);
	}

again:
	s = socket(server.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
	if (s == -1) {
		SYSerr(SYS_F_SOCKET, errno);
		ERR_asprintf_error_data("port='%s'", host);
		BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,
		    BIO_R_UNABLE_TO_CREATE_SOCKET);
		goto err;
	}

	if (bind_mode == BIO_BIND_REUSEADDR) {
		int i = 1;

		ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
		bind_mode = BIO_BIND_NORMAL;
	}
	if (bind(s, &server.sa, addrlen) == -1) {
		err_num = errno;
		if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
		    (err_num == EADDRINUSE)) {
			client = server;
			if (h == NULL || strcmp(h, "*") == 0) {
				if (client.sa.sa_family == AF_INET6) {
					memset(&client.sa_in6.sin6_addr, 0,
					    sizeof(client.sa_in6.sin6_addr));
					client.sa_in6.sin6_addr.s6_addr[15] = 1;
				} else if (client.sa.sa_family == AF_INET) {
					client.sa_in.sin_addr.s_addr =
					    htonl(0x7F000001);
				} else
					goto err;
			}
			cs = socket(client.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
			if (cs != -1) {
				int ii;
				ii = connect(cs, &client.sa, addrlen);
				close(cs);
				if (ii == -1) {
					bind_mode = BIO_BIND_REUSEADDR;
					close(s);
					goto again;
				}
				/* else error */
			}
			/* else error */
		}
		SYSerr(SYS_F_BIND, err_num);
		ERR_asprintf_error_data("port='%s'", host);
		BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,
		    BIO_R_UNABLE_TO_BIND_SOCKET);
		goto err;
	}
	if (listen(s, SOMAXCONN) == -1) {
		SYSerr(SYS_F_BIND, errno);
		ERR_asprintf_error_data("port='%s'", host);
		BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,
		    BIO_R_UNABLE_TO_LISTEN_SOCKET);
		goto err;
	}
	ret = 1;
err:
	free(str);
	if ((ret == 0) && (s != -1)) {
		close(s);
		s = -1;
	}
	return (s);
}

int
BIO_accept(int sock, char **addr)
{
	int ret = -1;
	unsigned long l;
	unsigned short port;
	char *p, *tmp;

	struct {
		socklen_t len;
		union {
			struct sockaddr sa;
			struct sockaddr_in sa_in;
			struct sockaddr_in6 sa_in6;
		} from;
	} sa;

	sa.len = sizeof(sa.from);
	memset(&sa.from, 0, sizeof(sa.from));
	ret = accept(sock, &sa.from.sa, &sa.len);
	if (ret == -1) {
		if (BIO_sock_should_retry(ret))
			return -2;
		SYSerr(SYS_F_ACCEPT, errno);
		BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
		goto end;
	}

	if (addr == NULL)
		goto end;

	do {
		char   h[NI_MAXHOST], s[NI_MAXSERV];
		size_t nl;

		if (getnameinfo(&sa.from.sa, sa.len, h, sizeof(h),
		    s, sizeof(s), NI_NUMERICHOST|NI_NUMERICSERV))
			break;
		nl = strlen(h) + strlen(s) + 2;
		p = *addr;
		if (p)
			*p = '\0';
		if (!(tmp = realloc(p, nl))) {
			close(ret);
			ret = -1;
			free(p);
			*addr = NULL;
			BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
			goto end;
		}
		p = tmp;
		*addr = p;
		snprintf(*addr, nl, "%s:%s", h, s);
		goto end;
	} while (0);
	if (sa.from.sa.sa_family != AF_INET)
		goto end;
	l = ntohl(sa.from.sa_in.sin_addr.s_addr);
	port = ntohs(sa.from.sa_in.sin_port);
	if (*addr == NULL) {
		if ((p = malloc(24)) == NULL) {
			close(ret);
			ret = -1;
			BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
			goto end;
		}
		*addr = p;
	}
	snprintf(*addr, 24, "%d.%d.%d.%d:%d",
	    (unsigned char)(l >> 24L) & 0xff, (unsigned char)(l >> 16L) & 0xff,
	    (unsigned char)(l >> 8L) & 0xff, (unsigned char)(l) & 0xff, port);

end:
	return (ret);
}

int
BIO_set_tcp_ndelay(int s, int on)
{
	return (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) == 0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: b_sock.c,v 1.61 2014/12/03 22:14:38 bcook Exp $ */
2			/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3			* All rights reserved.
4			*
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.
8			*
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).
15			*
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.
22			*
23			* Redistribution and use in source and binary forms, with or without
24			* modification, are permitted provided that the following conditions
25			* are met:
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)"
40			*
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
51			* SUCH DAMAGE.
52			*
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.]
57			*/
58
59			#include <sys/ioctl.h>
60			#include <sys/socket.h>
61			#include <string.h>
62
63			#include <arpa/inet.h>
64			#include <netinet/in.h>
65			#include <netinet/tcp.h>
66
67			#include <errno.h>
68			#include <limits.h>
69			#include <netdb.h>
70			#include <stdio.h>
71			#include <stdlib.h>
72			#include <unistd.h>
73
74			#include <openssl/bio.h>
75			#include <openssl/buffer.h>
76			#include <openssl/err.h>
77
78			int
79			BIO_get_host_ip(const char str, unsigned char ip)
80		14	{
81			int i;
82		14	int err = 1;
83			struct hostent *he;
84
85	✓✓	14	if (inet_pton(AF_INET, str, ip) == 1)
86		4	return (1);
87
88			/* do a gethostbyname */
89		10	CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
90		10	he = BIO_gethostbyname(str);
91	✓✓	10	if (he == NULL) {
92		9	BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP);
93		9	goto err;
94			}
95
96	✗✓	1	if (he->h_addrtype != AF_INET) {
97			BIOerr(BIO_F_BIO_GET_HOST_IP,
98			BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
99			goto err;
100			}
101	✓✓	5	for (i = 0; i < 4; i++)
102		4	ip[i] = he->h_addr_list[0][i];
103		1	err = 0;
104
105		10	err:
106		10	CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
107	✓✓	10	if (err) {
108		9	ERR_asprintf_error_data("host=%s", str);
109		9	return 0;
110			} else
111		1	return 1;
112			}
113
114			int
115			BIO_get_port(const char str, unsigned short port_ptr)
116		13	{
117		13	struct addrinfo *res = NULL;
118			struct addrinfo hints = {
119			.ai_family = AF_UNSPEC,
120			.ai_socktype = SOCK_STREAM,
121			.ai_flags = AI_PASSIVE,
122		13	};
123			long port;
124			char *ep;
125
126	✓✓	13	if (str == NULL) {
127		1	BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_SPECIFIED);
128		1	return (0);
129			}
130
131		12	errno = 0;
132		12	port = strtol(str, &ep, 10);
133	✓✓✓✓	12	if (str[0] != '\0' && *ep == '\0') {
134	✗✓✗✗	7	if (errno == ERANGE && (port == LONG_MAX \|\| port == LONG_MIN)) {
135			BIOerr(BIO_F_BIO_GET_PORT, BIO_R_INVALID_PORT_NUMBER);
136			return (0);
137			}
138	✓✓	7	if (port < 0 \|\| port > 65535) {
139		3	BIOerr(BIO_F_BIO_GET_PORT, BIO_R_INVALID_PORT_NUMBER);
140		3	return (0);
141			}
142			goto done;
143			}
144
145	✓✓	5	if (getaddrinfo(NULL, str, &hints, &res) == 0) {
146	✗✓	3	port = ntohs(((struct sockaddr_in *)(res->ai_addr))->sin_port);
147		3	goto done;
148			}
149
150	✗✓	2	if (strcmp(str, "http") == 0)
151			port = 80;
152	✗✓	2	else if (strcmp(str, "telnet") == 0)
153			port = 23;
154	✗✓	2	else if (strcmp(str, "socks") == 0)
155			port = 1080;
156	✗✓	2	else if (strcmp(str, "https") == 0)
157			port = 443;
158	✗✓	2	else if (strcmp(str, "ssl") == 0)
159			port = 443;
160	✗✓	2	else if (strcmp(str, "ftp") == 0)
161			port = 21;
162	✗✓	2	else if (strcmp(str, "gopher") == 0)
163			port = 70;
164			else {
165		2	SYSerr(SYS_F_GETSERVBYNAME, errno);
166		2	ERR_asprintf_error_data("service='%s'", str);
167		2	return (0);
168			}
169
170		7	done:
171	✓✓	7	if (res)
172		3	freeaddrinfo(res);
173		7	*port_ptr = (unsigned short)port;
174		7	return (1);
175			}
176
177			int
178			BIO_sock_error(int sock)
179			{
180			socklen_t len;
181			int err;
182
183			len = sizeof(err);
184			if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &err, &len) != 0)
185			return (1);
186			return (err);
187			}
188
189			struct hostent *
190			BIO_gethostbyname(const char *name)
191		10	{
192		10	return gethostbyname(name);
193			}
194
195			int
196			BIO_socket_ioctl(int fd, long type, void *arg)
197			{
198			int ret;
199
200			ret = ioctl(fd, type, arg);
201			if (ret < 0)
202			SYSerr(SYS_F_IOCTLSOCKET, errno);
203			return (ret);
204			}
205
206			int
207			BIO_get_accept_socket(char *host, int bind_mode)
208			{
209			int ret = 0;
210			union {
211			struct sockaddr sa;
212			struct sockaddr_in sa_in;
213			struct sockaddr_in6 sa_in6;
214			} server, client;
215			int s = -1, cs, addrlen;
216			unsigned char ip[4];
217			unsigned short port;
218			char str = NULL, e;
219			char h, p;
220			unsigned long l;
221			int err_num;
222
223			if (host == NULL \|\| (str = strdup(host)) == NULL)
224			return (-1);
225
226			h = p = NULL;
227			h = str;
228			for (e = str; *e; e++) {
229			if (*e == ':') {
230			p = e;
231			} else if (*e == '/') {
232			*e = '\0';
233			break;
234			}
235			}
236			/* points at last ':', '::port' is special [see below] */
237			if (p)
238			*p++ = '\0';
239			else
240			p = h, h = NULL;
241
242			do {
243			struct addrinfo *res, hint;
244
245			/*
246			* '::port' enforces IPv6 wildcard listener. Some OSes,
247			* e.g. Solaris, default to IPv6 without any hint. Also
248			* note that commonly IPv6 wildchard socket can service
249			* IPv4 connections just as well...
250			*/
251			memset(&hint, 0, sizeof(hint));
252			hint.ai_flags = AI_PASSIVE;
253			if (h) {
254			if (strchr(h, ':')) {
255			if (h[1] == '\0')
256			h = NULL;
257			hint.ai_family = AF_INET6;
258			} else if (h[0] == '*' && h[1] == '\0') {
259			hint.ai_family = AF_INET;
260			h = NULL;
261			}
262			}
263
264			if (getaddrinfo(h, p, &hint, &res))
265			break;
266
267			addrlen = res->ai_addrlen <= sizeof(server) ?
268			res->ai_addrlen : sizeof(server);
269			memcpy(&server, res->ai_addr, addrlen);
270
271			freeaddrinfo(res);
272			goto again;
273			} while (0);
274
275			if (!BIO_get_port(p, &port))
276			goto err;
277
278			memset((char *)&server, 0, sizeof(server));
279			server.sa_in.sin_family = AF_INET;
280			server.sa_in.sin_port = htons(port);
281			addrlen = sizeof(server.sa_in);
282
283			if (h == NULL \|\| strcmp(h, "*") == 0)
284			server.sa_in.sin_addr.s_addr = INADDR_ANY;
285			else {
286			if (!BIO_get_host_ip(h, &(ip[0])))
287			goto err;
288			l = (unsigned long)((unsigned long)ip[0]<<24L)\|
289			((unsigned long)ip[1]<<16L)\|
290			((unsigned long)ip[2]<< 8L)\|
291			((unsigned long)ip[3]);
292			server.sa_in.sin_addr.s_addr = htonl(l);
293			}
294
295			again:
296			s = socket(server.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
297			if (s == -1) {
298			SYSerr(SYS_F_SOCKET, errno);
299			ERR_asprintf_error_data("port='%s'", host);
300			BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,
301			BIO_R_UNABLE_TO_CREATE_SOCKET);
302			goto err;
303			}
304
305			if (bind_mode == BIO_BIND_REUSEADDR) {
306			int i = 1;
307
308			ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
309			bind_mode = BIO_BIND_NORMAL;
310			}
311			if (bind(s, &server.sa, addrlen) == -1) {
312			err_num = errno;
313			if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
314			(err_num == EADDRINUSE)) {
315			client = server;
316			if (h == NULL \|\| strcmp(h, "*") == 0) {
317			if (client.sa.sa_family == AF_INET6) {
318			memset(&client.sa_in6.sin6_addr, 0,
319			sizeof(client.sa_in6.sin6_addr));
320			client.sa_in6.sin6_addr.s6_addr[15] = 1;
321			} else if (client.sa.sa_family == AF_INET) {
322			client.sa_in.sin_addr.s_addr =
323			htonl(0x7F000001);
324			} else
325			goto err;
326			}
327			cs = socket(client.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
328			if (cs != -1) {
329			int ii;
330			ii = connect(cs, &client.sa, addrlen);
331			close(cs);
332			if (ii == -1) {
333			bind_mode = BIO_BIND_REUSEADDR;
334			close(s);
335			goto again;
336			}
337			/* else error */
338			}
339			/* else error */
340			}
341			SYSerr(SYS_F_BIND, err_num);
342			ERR_asprintf_error_data("port='%s'", host);
343			BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,
344			BIO_R_UNABLE_TO_BIND_SOCKET);
345			goto err;
346			}
347			if (listen(s, SOMAXCONN) == -1) {
348			SYSerr(SYS_F_BIND, errno);
349			ERR_asprintf_error_data("port='%s'", host);
350			BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,
351			BIO_R_UNABLE_TO_LISTEN_SOCKET);
352			goto err;
353			}
354			ret = 1;
355			err:
356			free(str);
357			if ((ret == 0) && (s != -1)) {
358			close(s);
359			s = -1;
360			}
361			return (s);
362			}
363
364			int
365			BIO_accept(int sock, char **addr)
366			{
367			int ret = -1;
368			unsigned long l;
369			unsigned short port;
370			char p, tmp;
371
372			struct {
373			socklen_t len;
374			union {
375			struct sockaddr sa;
376			struct sockaddr_in sa_in;
377			struct sockaddr_in6 sa_in6;
378			} from;
379			} sa;
380
381			sa.len = sizeof(sa.from);
382			memset(&sa.from, 0, sizeof(sa.from));
383			ret = accept(sock, &sa.from.sa, &sa.len);
384			if (ret == -1) {
385			if (BIO_sock_should_retry(ret))
386			return -2;
387			SYSerr(SYS_F_ACCEPT, errno);
388			BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
389			goto end;
390			}
391
392			if (addr == NULL)
393			goto end;
394
395			do {
396			char h[NI_MAXHOST], s[NI_MAXSERV];
397			size_t nl;
398
399			if (getnameinfo(&sa.from.sa, sa.len, h, sizeof(h),
400			s, sizeof(s), NI_NUMERICHOST\|NI_NUMERICSERV))
401			break;
402			nl = strlen(h) + strlen(s) + 2;
403			p = *addr;
404			if (p)
405			*p = '\0';
406			if (!(tmp = realloc(p, nl))) {
407			close(ret);
408			ret = -1;
409			free(p);
410			*addr = NULL;
411			BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
412			goto end;
413			}
414			p = tmp;
415			*addr = p;
416			snprintf(*addr, nl, "%s:%s", h, s);
417			goto end;
418			} while (0);
419			if (sa.from.sa.sa_family != AF_INET)
420			goto end;
421			l = ntohl(sa.from.sa_in.sin_addr.s_addr);
422			port = ntohs(sa.from.sa_in.sin_port);
423			if (*addr == NULL) {
424			if ((p = malloc(24)) == NULL) {
425			close(ret);
426			ret = -1;
427			BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
428			goto end;
429			}
430			*addr = p;
431			}
432			snprintf(*addr, 24, "%d.%d.%d.%d:%d",
433			(unsigned char)(l >> 24L) & 0xff, (unsigned char)(l >> 16L) & 0xff,
434			(unsigned char)(l >> 8L) & 0xff, (unsigned char)(l) & 0xff, port);
435
436			end:
437			return (ret);
438			}
439
440			int
441			BIO_set_tcp_ndelay(int s, int on)
442			{
443			return (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) == 0);
444			}