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 29OPENSSL_MSVC_PRAGMA(warning(push, 3)) 30#include <winsock2.h> 31#include <ws2tcpip.h> 32OPENSSL_MSVC_PRAGMA(warning(pop)) 33#endif 34 35#include "internal.h" 36#include "../internal.h" 37 38 39int 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 80out: 81 freeaddrinfo(result); 82 return ret; 83} 84 85int 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 104void bio_clear_socket_error(void) {} 105 106int 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