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 #define _POSIX_SOURCE 16 17 #include <openssl/bio.h> 18 #include <openssl/err.h> 19 20 #include <fcntl.h> 21 #include <sys/types.h> 22 23 #if !defined(OPENSSL_WINDOWS) 24 #include <netdb.h> 25 #include <unistd.h> 26 #else 27 #include <WinSock2.h> 28 #include <WS2tcpip.h> 29 typedef int socklen_t; 30 #endif 31 32 #include "internal.h" 33 34 35 int bio_ip_and_port_to_socket_and_addr(int *out_sock, 36 struct sockaddr_storage *out_addr, 37 socklen_t *out_addr_length, 38 const char *hostname, 39 const char *port_str) { 40 struct addrinfo hint, *result, *cur; 41 int ret; 42 43 *out_sock = -1; 44 45 memset(&hint, 0, sizeof(hint)); 46 hint.ai_family = AF_UNSPEC; 47 hint.ai_socktype = SOCK_STREAM; 48 49 ret = getaddrinfo(hostname, port_str, &hint, &result); 50 if (ret != 0) { 51 OPENSSL_PUT_ERROR(SYS, getaddrinfo, 0); 52 ERR_add_error_data(2, gai_strerror(ret)); 53 return 0; 54 } 55 56 ret = 0; 57 58 for (cur = result; cur; cur = cur->ai_next) { 59 if (cur->ai_addrlen > sizeof(struct sockaddr_storage)) { 60 continue; 61 } 62 memset(out_addr, 0, sizeof(struct sockaddr_storage)); 63 memcpy(out_addr, cur->ai_addr, cur->ai_addrlen); 64 *out_addr_length = cur->ai_addrlen; 65 66 *out_sock = socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol); 67 if (*out_sock < 0) { 68 OPENSSL_PUT_SYSTEM_ERROR(socket); 69 goto out; 70 } 71 72 ret = 1; 73 break; 74 } 75 76 out: 77 freeaddrinfo(result); 78 return ret; 79 } 80 81 int bio_socket_nbio(int sock, int on) { 82 #if defined(OPENSSL_WINDOWS) 83 u_long arg = on; 84 85 return 0 == ioctlsocket(sock, FIONBIO, &arg); 86 #else 87 int flags = fcntl(sock, F_GETFL, 0); 88 if (flags < 0) { 89 return 0; 90 } 91 if (!on) { 92 flags &= ~O_NONBLOCK; 93 } else { 94 flags |= O_NONBLOCK; 95 } 96 return fcntl(sock, F_SETFL, flags) == 0; 97 #endif 98 } 99 100 void bio_clear_socket_error(void) {} 101 102 int bio_sock_error(int sock) { 103 int error; 104 socklen_t error_size = sizeof(error); 105 106 if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &error_size) < 0) { 107 return 1; 108 } 109 return error; 110 } 111