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 #include <fcntl.h>
22 #include <string.h>
23 #include <sys/types.h>
24
25 #if !defined(OPENSSL_WINDOWS)
26 #include <netdb.h>
27 #include <unistd.h>
28 #else
29 OPENSSL_MSVC_PRAGMA(warning(push, 3))
30 #include <winsock2.h>
31 #include <ws2tcpip.h>
OPENSSL_MSVC_PRAGMA(warning (pop))32 OPENSSL_MSVC_PRAGMA(warning(pop))
33 #endif
34
35 #include "internal.h"
36 #include "../internal.h"
37
38
39 int bio_ip_and_port_to_socket_and_addr(int *out_sock,
40 struct sockaddr_storage *out_addr,
41 socklen_t *out_addr_length,
42 const char *hostname,
43 const char *port_str) {
44 struct addrinfo hint, *result, *cur;
45 int ret;
46
47 *out_sock = -1;
48
49 OPENSSL_memset(&hint, 0, sizeof(hint));
50 hint.ai_family = AF_UNSPEC;
51 hint.ai_socktype = SOCK_STREAM;
52
53 ret = getaddrinfo(hostname, port_str, &hint, &result);
54 if (ret != 0) {
55 OPENSSL_PUT_ERROR(SYS, 0);
56 ERR_add_error_data(1, gai_strerror(ret));
57 return 0;
58 }
59
60 ret = 0;
61
62 for (cur = result; cur; cur = cur->ai_next) {
63 if ((size_t) cur->ai_addrlen > sizeof(struct sockaddr_storage)) {
64 continue;
65 }
66 OPENSSL_memset(out_addr, 0, sizeof(struct sockaddr_storage));
67 OPENSSL_memcpy(out_addr, cur->ai_addr, cur->ai_addrlen);
68 *out_addr_length = cur->ai_addrlen;
69
70 *out_sock = socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol);
71 if (*out_sock < 0) {
72 OPENSSL_PUT_SYSTEM_ERROR();
73 goto out;
74 }
75
76 ret = 1;
77 break;
78 }
79
80 out:
81 freeaddrinfo(result);
82 return ret;
83 }
84
bio_socket_nbio(int sock,int on)85 int bio_socket_nbio(int sock, int on) {
86 #if defined(OPENSSL_WINDOWS)
87 u_long arg = on;
88
89 return 0 == ioctlsocket(sock, FIONBIO, &arg);
90 #else
91 int flags = fcntl(sock, F_GETFL, 0);
92 if (flags < 0) {
93 return 0;
94 }
95 if (!on) {
96 flags &= ~O_NONBLOCK;
97 } else {
98 flags |= O_NONBLOCK;
99 }
100 return fcntl(sock, F_SETFL, flags) == 0;
101 #endif
102 }
103
bio_clear_socket_error(void)104 void bio_clear_socket_error(void) {}
105
bio_sock_error(int sock)106 int bio_sock_error(int sock) {
107 int error;
108 socklen_t error_size = sizeof(error);
109
110 if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &error_size) < 0) {
111 return 1;
112 }
113 return error;
114 }
115