--- /dev/null
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200112L
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <netdb.h>
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+#include <ws2tcpip.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int 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) {
+ struct addrinfo hint, *result, *cur;
+ int ret;
+
+ *out_sock = -1;
+
+ OPENSSL_memset(&hint, 0, sizeof(hint));
+ hint.ai_family = AF_UNSPEC;
+ hint.ai_socktype = SOCK_STREAM;
+
+ ret = getaddrinfo(hostname, port_str, &hint, &result);
+ if (ret != 0) {
+ OPENSSL_PUT_ERROR(SYS, 0);
+ ERR_add_error_data(1, gai_strerror(ret));
+ return 0;
+ }
+
+ ret = 0;
+
+ for (cur = result; cur; cur = cur->ai_next) {
+ if ((size_t) cur->ai_addrlen > sizeof(struct sockaddr_storage)) {
+ continue;
+ }
+ OPENSSL_memset(out_addr, 0, sizeof(struct sockaddr_storage));
+ OPENSSL_memcpy(out_addr, cur->ai_addr, cur->ai_addrlen);
+ *out_addr_length = cur->ai_addrlen;
+
+ *out_sock = socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol);
+ if (*out_sock < 0) {
+ OPENSSL_PUT_SYSTEM_ERROR();
+ goto out;
+ }
+
+ ret = 1;
+ break;
+ }
+
+out:
+ freeaddrinfo(result);
+ return ret;
+}
+
+int bio_socket_nbio(int sock, int on) {
+#if defined(OPENSSL_WINDOWS)
+ u_long arg = on;
+
+ return 0 == ioctlsocket(sock, FIONBIO, &arg);
+#else
+ int flags = fcntl(sock, F_GETFL, 0);
+ if (flags < 0) {
+ return 0;
+ }
+ if (!on) {
+ flags &= ~O_NONBLOCK;
+ } else {
+ flags |= O_NONBLOCK;
+ }
+ return fcntl(sock, F_SETFL, flags) == 0;
+#endif
+}
+
+void bio_clear_socket_error(void) {}
+
+int bio_sock_error(int sock) {
+ int error;
+ socklen_t error_size = sizeof(error);
+
+ if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &error_size) < 0) {
+ return 1;
+ }
+ return error;
+}