1/* Copyright (c) 2014, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15#undef _POSIX_C_SOURCE
16#define _POSIX_C_SOURCE 200112L
17
18#include <openssl/bio.h>
19#include <openssl/err.h>
20
21#if !defined(OPENSSL_TRUSTY)
22
23#include <fcntl.h>
24#include <string.h>
25#include <sys/types.h>
26
27#if !defined(OPENSSL_WINDOWS)
28#include <netdb.h>
29#include <unistd.h>
30#else
31OPENSSL_MSVC_PRAGMA(warning(push, 3))
32#include <winsock2.h>
33#include <ws2tcpip.h>
34OPENSSL_MSVC_PRAGMA(warning(pop))
35#endif
36
37#include "internal.h"
38#include "../internal.h"
39
40
41int bio_ip_and_port_to_socket_and_addr(int *out_sock,
42 struct sockaddr_storage *out_addr,
43 socklen_t *out_addr_length,
44 const char *hostname,
45 const char *port_str) {
46 struct addrinfo hint, *result, *cur;
47 int ret;
48
49 *out_sock = -1;
50
51 OPENSSL_memset(&hint, 0, sizeof(hint));
52 hint.ai_family = AF_UNSPEC;
53 hint.ai_socktype = SOCK_STREAM;
54
55 ret = getaddrinfo(hostname, port_str, &hint, &result);
56 if (ret != 0) {
57 OPENSSL_PUT_ERROR(SYS, 0);
58 ERR_add_error_data(1, gai_strerror(ret));
59 return 0;
60 }
61
62 ret = 0;
63
64 for (cur = result; cur; cur = cur->ai_next) {
65 if ((size_t) cur->ai_addrlen > sizeof(struct sockaddr_storage)) {
66 continue;
67 }
68 OPENSSL_memset(out_addr, 0, sizeof(struct sockaddr_storage));
69 OPENSSL_memcpy(out_addr, cur->ai_addr, cur->ai_addrlen);
70 *out_addr_length = cur->ai_addrlen;
71
72 *out_sock = socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol);
73 if (*out_sock < 0) {
74 OPENSSL_PUT_SYSTEM_ERROR();
75 goto out;
76 }
77
78 ret = 1;
79 break;
80 }
81
82out:
83 freeaddrinfo(result);
84 return ret;
85}
86
87int bio_socket_nbio(int sock, int on) {
88#if defined(OPENSSL_WINDOWS)
89 u_long arg = on;
90
91 return 0 == ioctlsocket(sock, FIONBIO, &arg);
92#else
93 int flags = fcntl(sock, F_GETFL, 0);
94 if (flags < 0) {
95 return 0;
96 }
97 if (!on) {
98 flags &= ~O_NONBLOCK;
99 } else {
100 flags |= O_NONBLOCK;
101 }
102 return fcntl(sock, F_SETFL, flags) == 0;
103#endif
104}
105
106void bio_clear_socket_error(void) {}
107
108int bio_sock_error(int sock) {
109 int error;
110 socklen_t error_size = sizeof(error);
111
112 if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &error_size) < 0) {
113 return 1;
114 }
115 return error;
116}
117
118#endif // OPENSSL_TRUSTY
119