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