2014-06-20 20:00:00 +01:00
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#include <openssl/bio.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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2015-01-31 01:08:37 +00:00
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#include <string.h>
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2014-06-20 20:00:00 +01:00
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#if !defined(OPENSSL_WINDOWS)
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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2015-01-28 07:06:00 +00:00
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#else
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2015-01-29 00:20:02 +00:00
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#pragma warning(push, 3)
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2015-03-20 23:32:23 +00:00
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#include <winsock2.h>
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#include <ws2tcpip.h>
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2015-01-29 00:20:02 +00:00
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#pragma warning(pop)
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2014-06-20 20:00:00 +01:00
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#endif
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#include <openssl/buf.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include "internal.h"
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enum {
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BIO_CONN_S_BEFORE,
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BIO_CONN_S_BLOCKED_CONNECT,
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BIO_CONN_S_OK,
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};
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typedef struct bio_connect_st {
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int state;
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char *param_hostname;
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char *param_port;
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int nbio;
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uint8_t ip[4];
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unsigned short port;
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struct sockaddr_storage them;
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2014-07-17 22:23:22 +01:00
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socklen_t them_length;
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2014-06-20 20:00:00 +01:00
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/* the file descriptor is kept in bio->num in order to match the socket
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* BIO. */
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/* info_callback is called when the connection is initially made
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* callback(BIO,state,ret); The callback should return 'ret', state is for
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* compatibility with the SSL info_callback. */
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int (*info_callback)(const BIO *bio, int state, int ret);
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} BIO_CONNECT;
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2014-10-01 01:51:57 +01:00
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#if !defined(OPENSSL_WINDOWS)
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static int closesocket(int sock) {
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return close(sock);
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}
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#endif
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2014-06-20 20:00:00 +01:00
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/* maybe_copy_ipv4_address sets |*ipv4| to the IPv4 address from |ss| (in
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* big-endian order), if |ss| contains an IPv4 socket address. */
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static void maybe_copy_ipv4_address(uint8_t *ipv4,
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const struct sockaddr_storage *ss) {
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const struct sockaddr_in *sin;
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if (ss->ss_family != AF_INET) {
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return;
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}
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sin = (const struct sockaddr_in*) ss;
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memcpy(ipv4, &sin->sin_addr, 4);
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}
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static int conn_state(BIO *bio, BIO_CONNECT *c) {
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int ret = -1, i;
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char *p, *q;
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int (*cb)(const BIO *, int, int) = NULL;
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if (c->info_callback != NULL) {
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cb = c->info_callback;
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}
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for (;;) {
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switch (c->state) {
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case BIO_CONN_S_BEFORE:
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p = c->param_hostname;
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if (p == NULL) {
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2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_NO_HOSTNAME_SPECIFIED);
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2014-06-20 20:00:00 +01:00
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goto exit_loop;
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}
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for (; *p != 0; p++) {
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if (*p == ':' || *p == '/') {
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break;
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}
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}
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i = *p;
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if (i == ':' || i == '/') {
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*(p++) = 0;
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if (i == ':') {
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for (q = p; *q; q++) {
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if (*q == '/') {
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*q = 0;
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break;
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}
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}
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2015-04-22 18:50:28 +01:00
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OPENSSL_free(c->param_port);
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2014-06-20 20:00:00 +01:00
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c->param_port = BUF_strdup(p);
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}
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}
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if (c->param_port == NULL) {
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2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_NO_PORT_SPECIFIED);
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2014-06-20 20:00:00 +01:00
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ERR_add_error_data(2, "host=", c->param_hostname);
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goto exit_loop;
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}
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if (!bio_ip_and_port_to_socket_and_addr(
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2014-07-17 22:23:22 +01:00
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&bio->num, &c->them, &c->them_length, c->param_hostname,
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c->param_port)) {
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2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_UNABLE_TO_CREATE_SOCKET);
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2014-06-20 20:00:00 +01:00
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ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
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goto exit_loop;
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}
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memset(c->ip, 0, 4);
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maybe_copy_ipv4_address(c->ip, &c->them);
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if (c->nbio) {
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if (!bio_socket_nbio(bio->num, 1)) {
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2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_ERROR_SETTING_NBIO);
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2014-06-20 20:00:00 +01:00
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ERR_add_error_data(4, "host=", c->param_hostname, ":",
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c->param_port);
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goto exit_loop;
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}
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}
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i = 1;
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ret = setsockopt(bio->num, SOL_SOCKET, SO_KEEPALIVE, (char *)&i,
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sizeof(i));
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if (ret < 0) {
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OPENSSL_PUT_SYSTEM_ERROR(setsockopt);
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2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_KEEPALIVE);
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2014-06-20 20:00:00 +01:00
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ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
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goto exit_loop;
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}
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BIO_clear_retry_flags(bio);
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2014-07-17 22:23:22 +01:00
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ret = connect(bio->num, (struct sockaddr*) &c->them, c->them_length);
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2014-06-20 20:00:00 +01:00
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if (ret < 0) {
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if (bio_fd_should_retry(ret)) {
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BIO_set_flags(bio, (BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY));
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c->state = BIO_CONN_S_BLOCKED_CONNECT;
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bio->retry_reason = BIO_RR_CONNECT;
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} else {
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OPENSSL_PUT_SYSTEM_ERROR(connect);
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2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_CONNECT_ERROR);
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2014-06-20 20:00:00 +01:00
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ERR_add_error_data(4, "host=", c->param_hostname, ":",
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c->param_port);
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}
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goto exit_loop;
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} else {
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c->state = BIO_CONN_S_OK;
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}
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break;
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case BIO_CONN_S_BLOCKED_CONNECT:
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i = bio_sock_error(bio->num);
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if (i) {
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if (bio_fd_should_retry(ret)) {
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BIO_set_flags(bio, (BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY));
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c->state = BIO_CONN_S_BLOCKED_CONNECT;
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bio->retry_reason = BIO_RR_CONNECT;
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ret = -1;
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} else {
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BIO_clear_retry_flags(bio);
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OPENSSL_PUT_SYSTEM_ERROR(connect);
|
2015-06-29 05:28:17 +01:00
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OPENSSL_PUT_ERROR(BIO, BIO_R_NBIO_CONNECT_ERROR);
|
2014-06-20 20:00:00 +01:00
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ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
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ret = 0;
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}
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goto exit_loop;
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} else {
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c->state = BIO_CONN_S_OK;
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}
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break;
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case BIO_CONN_S_OK:
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ret = 1;
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goto exit_loop;
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default:
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assert(0);
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goto exit_loop;
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}
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if (cb != NULL) {
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ret = cb((BIO *)bio, c->state, ret);
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if (ret == 0) {
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goto end;
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}
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}
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}
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exit_loop:
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if (cb != NULL) {
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ret = cb((BIO *)bio, c->state, ret);
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}
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end:
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return ret;
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}
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static BIO_CONNECT *BIO_CONNECT_new(void) {
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BIO_CONNECT *ret = OPENSSL_malloc(sizeof(BIO_CONNECT));
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if (ret == NULL) {
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return NULL;
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}
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memset(ret, 0, sizeof(BIO_CONNECT));
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ret->state = BIO_CONN_S_BEFORE;
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return ret;
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}
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static void BIO_CONNECT_free(BIO_CONNECT *c) {
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|
|
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if (c == NULL) {
|
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return;
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}
|
|
|
|
|
2015-04-22 18:50:28 +01:00
|
|
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OPENSSL_free(c->param_hostname);
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OPENSSL_free(c->param_port);
|
2014-06-20 20:00:00 +01:00
|
|
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OPENSSL_free(c);
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|
|
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}
|
|
|
|
|
|
|
|
static int conn_new(BIO *bio) {
|
|
|
|
bio->init = 0;
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|
|
bio->num = -1;
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|
|
bio->flags = 0;
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|
|
bio->ptr = (char *)BIO_CONNECT_new();
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|
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return bio->ptr != NULL;
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|
|
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}
|
|
|
|
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|
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static void conn_close_socket(BIO *bio) {
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|
|
|
BIO_CONNECT *c = (BIO_CONNECT *) bio->ptr;
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|
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|
|
if (bio->num == -1) {
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|
|
return;
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|
|
}
|
|
|
|
|
|
|
|
/* Only do a shutdown if things were established */
|
|
|
|
if (c->state == BIO_CONN_S_OK) {
|
|
|
|
shutdown(bio->num, 2);
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|
|
|
}
|
2014-10-01 01:51:57 +01:00
|
|
|
closesocket(bio->num);
|
2014-06-20 20:00:00 +01:00
|
|
|
bio->num = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int conn_free(BIO *bio) {
|
|
|
|
if (bio == NULL) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bio->shutdown) {
|
|
|
|
conn_close_socket(bio);
|
|
|
|
}
|
|
|
|
|
|
|
|
BIO_CONNECT_free((BIO_CONNECT*) bio->ptr);
|
|
|
|
|
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|
|
return 1;
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|
|
|
}
|
|
|
|
|
|
|
|
static int conn_read(BIO *bio, char *out, int out_len) {
|
|
|
|
int ret = 0;
|
|
|
|
BIO_CONNECT *data;
|
|
|
|
|
|
|
|
data = (BIO_CONNECT *)bio->ptr;
|
|
|
|
if (data->state != BIO_CONN_S_OK) {
|
|
|
|
ret = conn_state(bio, data);
|
|
|
|
if (ret <= 0) {
|
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|
|
return ret;
|
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|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
bio_clear_socket_error();
|
|
|
|
ret = recv(bio->num, out, out_len, 0);
|
|
|
|
BIO_clear_retry_flags(bio);
|
|
|
|
if (ret <= 0) {
|
|
|
|
if (bio_fd_should_retry(ret)) {
|
|
|
|
BIO_set_retry_read(bio);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int conn_write(BIO *bio, const char *in, int in_len) {
|
|
|
|
int ret;
|
|
|
|
BIO_CONNECT *data;
|
|
|
|
|
|
|
|
data = (BIO_CONNECT *)bio->ptr;
|
|
|
|
if (data->state != BIO_CONN_S_OK) {
|
|
|
|
ret = conn_state(bio, data);
|
|
|
|
if (ret <= 0) {
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
bio_clear_socket_error();
|
|
|
|
ret = send(bio->num, in, in_len, 0);
|
|
|
|
BIO_clear_retry_flags(bio);
|
|
|
|
if (ret <= 0) {
|
|
|
|
if (bio_fd_should_retry(ret)) {
|
|
|
|
BIO_set_retry_write(bio);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static long conn_ctrl(BIO *bio, int cmd, long num, void *ptr) {
|
|
|
|
int *ip;
|
|
|
|
const char **pptr;
|
|
|
|
long ret = 1;
|
|
|
|
BIO_CONNECT *data;
|
|
|
|
|
|
|
|
data = (BIO_CONNECT *)bio->ptr;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case BIO_CTRL_RESET:
|
|
|
|
ret = 0;
|
|
|
|
data->state = BIO_CONN_S_BEFORE;
|
|
|
|
conn_close_socket(bio);
|
|
|
|
bio->flags = 0;
|
|
|
|
break;
|
|
|
|
case BIO_C_DO_STATE_MACHINE:
|
|
|
|
/* use this one to start the connection */
|
2015-02-11 06:16:26 +00:00
|
|
|
if (data->state != BIO_CONN_S_OK) {
|
2014-06-20 20:00:00 +01:00
|
|
|
ret = (long)conn_state(bio, data);
|
2015-02-11 06:16:26 +00:00
|
|
|
} else {
|
2014-06-20 20:00:00 +01:00
|
|
|
ret = 1;
|
2015-02-11 06:16:26 +00:00
|
|
|
}
|
2014-06-20 20:00:00 +01:00
|
|
|
break;
|
|
|
|
case BIO_C_GET_CONNECT:
|
|
|
|
/* TODO(fork): can this be removed? (Or maybe this whole file). */
|
|
|
|
if (ptr != NULL) {
|
|
|
|
pptr = (const char **)ptr;
|
|
|
|
if (num == 0) {
|
|
|
|
*pptr = data->param_hostname;
|
|
|
|
} else if (num == 1) {
|
|
|
|
*pptr = data->param_port;
|
|
|
|
} else if (num == 2) {
|
|
|
|
*pptr = (char *) &data->ip[0];
|
|
|
|
} else if (num == 3) {
|
|
|
|
*((int *)ptr) = data->port;
|
|
|
|
}
|
|
|
|
if (!bio->init) {
|
|
|
|
*pptr = "not initialized";
|
|
|
|
}
|
|
|
|
ret = 1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case BIO_C_SET_CONNECT:
|
|
|
|
if (ptr != NULL) {
|
|
|
|
bio->init = 1;
|
|
|
|
if (num == 0) {
|
2015-04-22 18:50:28 +01:00
|
|
|
OPENSSL_free(data->param_hostname);
|
2014-06-20 20:00:00 +01:00
|
|
|
data->param_hostname = BUF_strdup(ptr);
|
2015-04-22 18:44:42 +01:00
|
|
|
if (data->param_hostname == NULL) {
|
|
|
|
ret = 0;
|
|
|
|
}
|
2014-06-20 20:00:00 +01:00
|
|
|
} else if (num == 1) {
|
2015-04-22 18:50:28 +01:00
|
|
|
OPENSSL_free(data->param_port);
|
2014-06-20 20:00:00 +01:00
|
|
|
data->param_port = BUF_strdup(ptr);
|
2015-04-22 18:44:42 +01:00
|
|
|
if (data->param_port == NULL) {
|
|
|
|
ret = 0;
|
|
|
|
}
|
2014-06-20 20:00:00 +01:00
|
|
|
} else {
|
|
|
|
ret = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case BIO_C_SET_NBIO:
|
|
|
|
data->nbio = (int)num;
|
|
|
|
break;
|
|
|
|
case BIO_C_GET_FD:
|
|
|
|
if (bio->init) {
|
|
|
|
ip = (int *)ptr;
|
|
|
|
if (ip != NULL) {
|
|
|
|
*ip = bio->num;
|
|
|
|
}
|
2015-10-02 19:54:20 +01:00
|
|
|
ret = bio->num;
|
2014-06-20 20:00:00 +01:00
|
|
|
} else {
|
2015-10-02 19:54:20 +01:00
|
|
|
ret = -1;
|
2014-06-20 20:00:00 +01:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case BIO_CTRL_GET_CLOSE:
|
|
|
|
ret = bio->shutdown;
|
|
|
|
break;
|
|
|
|
case BIO_CTRL_SET_CLOSE:
|
|
|
|
bio->shutdown = (int)num;
|
|
|
|
break;
|
|
|
|
case BIO_CTRL_PENDING:
|
|
|
|
case BIO_CTRL_WPENDING:
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
case BIO_CTRL_FLUSH:
|
|
|
|
break;
|
|
|
|
case BIO_CTRL_SET_CALLBACK: {
|
|
|
|
#if 0 /* FIXME: Should this be used? -- Richard Levitte */
|
2015-06-29 05:28:17 +01:00
|
|
|
OPENSSL_PUT_ERROR(BIO, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
|
2014-06-20 20:00:00 +01:00
|
|
|
ret = -1;
|
|
|
|
#else
|
|
|
|
ret = 0;
|
|
|
|
#endif
|
|
|
|
} break;
|
|
|
|
case BIO_CTRL_GET_CALLBACK: {
|
|
|
|
int (**fptr)(const BIO *bio, int state, int xret);
|
|
|
|
fptr = (int (**)(const BIO *bio, int state, int xret))ptr;
|
|
|
|
*fptr = data->info_callback;
|
|
|
|
} break;
|
|
|
|
default:
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
static long conn_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
|
|
|
|
long ret = 1;
|
|
|
|
BIO_CONNECT *data;
|
|
|
|
|
|
|
|
data = (BIO_CONNECT *)bio->ptr;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case BIO_CTRL_SET_CALLBACK: {
|
|
|
|
data->info_callback = (int (*)(const struct bio_st *, int, int))fp;
|
|
|
|
} break;
|
|
|
|
default:
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int conn_puts(BIO *bp, const char *str) {
|
|
|
|
return conn_write(bp, str, strlen(str));
|
|
|
|
}
|
|
|
|
|
|
|
|
BIO *BIO_new_connect(const char *hostname) {
|
|
|
|
BIO *ret;
|
|
|
|
|
|
|
|
ret = BIO_new(BIO_s_connect());
|
|
|
|
if (ret == NULL) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
if (!BIO_set_conn_hostname(ret, hostname)) {
|
|
|
|
BIO_free(ret);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const BIO_METHOD methods_connectp = {
|
|
|
|
BIO_TYPE_CONNECT, "socket connect", conn_write, conn_read,
|
|
|
|
conn_puts, NULL /* connect_gets, */, conn_ctrl, conn_new,
|
|
|
|
conn_free, conn_callback_ctrl,
|
|
|
|
};
|
|
|
|
|
|
|
|
const BIO_METHOD *BIO_s_connect(void) { return &methods_connectp; }
|
|
|
|
|
|
|
|
int BIO_set_conn_hostname(BIO *bio, const char *name) {
|
|
|
|
return BIO_ctrl(bio, BIO_C_SET_CONNECT, 0, (void*) name);
|
|
|
|
}
|
|
|
|
|
|
|
|
int BIO_set_conn_port(BIO *bio, const char *port_str) {
|
|
|
|
return BIO_ctrl(bio, BIO_C_SET_CONNECT, 1, (void*) port_str);
|
|
|
|
}
|
|
|
|
|
|
|
|
int BIO_set_nbio(BIO *bio, int on) {
|
|
|
|
return BIO_ctrl(bio, BIO_C_SET_NBIO, on, NULL);
|
|
|
|
}
|