-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 199-2015 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
/* socket-related functions used by s_client and s_server */
#include <string.h>
#include <errno.h>
#include <signal.h>
+#include <openssl/opensslconf.h>
/*
* With IPv6, it looks like Digital has mixed up the proper order of
#ifndef OPENSSL_NO_SOCK
-# define USE_SOCKETS
# include "apps.h"
-# undef USE_SOCKETS
# include "s_apps.h"
+# include "internal/sockets.h"
# include <openssl/bio.h>
# include <openssl/err.h>
+/* Keep track of our peer's address for the cookie callback */
+BIO_ADDR *ourpeer = NULL;
+
/*
* init_client - helper routine to set up socket communication
* @sock: pointer to storage of resulting socket.
* @host: the host name or path (for AF_UNIX) to connect to.
* @port: the port to connect to (ignored for AF_UNIX).
+ * @bindhost: source host or path (for AF_UNIX).
+ * @bindport: source port (ignored for AF_UNIX).
* @family: desired socket family, may be AF_INET, AF_INET6, AF_UNIX or
* AF_UNSPEC
* @type: socket type, must be SOCK_STREAM or SOCK_DGRAM
+ * @protocol: socket protocol, e.g. IPPROTO_TCP or IPPROTO_UDP (or 0 for any)
*
* This will create a socket and use it to connect to a host:port, or if
* family == AF_UNIX, to the path found in host.
* Returns 1 on success, 0 on failure.
*/
int init_client(int *sock, const char *host, const char *port,
- int family, int type)
+ const char *bindhost, const char *bindport,
+ int family, int type, int protocol)
{
BIO_ADDRINFO *res = NULL;
+ BIO_ADDRINFO *bindaddr = NULL;
const BIO_ADDRINFO *ai = NULL;
+ const BIO_ADDRINFO *bi = NULL;
+ int found = 0;
int ret;
- if (!BIO_sock_init())
+ if (BIO_sock_init() != 1)
return 0;
- ret = BIO_lookup(host, port, BIO_LOOKUP_CLIENT, family, type, &res);
+ ret = BIO_lookup_ex(host, port, BIO_LOOKUP_CLIENT, family, type, protocol,
+ &res);
if (ret == 0) {
ERR_print_errors(bio_err);
return 0;
}
+ if (bindhost != NULL || bindport != NULL) {
+ ret = BIO_lookup_ex(bindhost, bindport, BIO_LOOKUP_CLIENT,
+ family, type, protocol, &bindaddr);
+ if (ret == 0) {
+ ERR_print_errors (bio_err);
+ goto out;
+ }
+ }
+
ret = 0;
for (ai = res; ai != NULL; ai = BIO_ADDRINFO_next(ai)) {
- int protocol = (type == SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP);
-# ifdef AF_UNIX
- if (BIO_ADDRINFO_family(ai) == AF_UNIX)
- protocol = 0;
-# endif
- /* Admitedly, these checks are quite paranoid, we should
- not get anything in the BIO_ADDRINFO chain that we haven't
- asked for */
- OPENSSL_assert((family == AF_UNSPEC || family == BIO_ADDRINFO_family(res))
- && (type == 0 || type == BIO_ADDRINFO_socktype(res)));
+ /* Admittedly, these checks are quite paranoid, we should not get
+ * anything in the BIO_ADDRINFO chain that we haven't
+ * asked for. */
+ OPENSSL_assert((family == AF_UNSPEC
+ || family == BIO_ADDRINFO_family(ai))
+ && (type == 0 || type == BIO_ADDRINFO_socktype(ai))
+ && (protocol == 0
+ || protocol == BIO_ADDRINFO_protocol(ai)));
+
+ if (bindaddr != NULL) {
+ for (bi = bindaddr; bi != NULL; bi = BIO_ADDRINFO_next(bi)) {
+ if (BIO_ADDRINFO_family(bi) == BIO_ADDRINFO_family(ai))
+ break;
+ }
+ if (bi == NULL)
+ continue;
+ ++found;
+ }
*sock = BIO_socket(BIO_ADDRINFO_family(ai), BIO_ADDRINFO_socktype(ai),
BIO_ADDRINFO_protocol(ai), 0);
*/
continue;
}
- if (!BIO_connect(*sock, BIO_ADDRINFO_address(ai), 0)) {
+
+ if (bi != NULL) {
+ if (!BIO_bind(*sock, BIO_ADDRINFO_address(bi),
+ BIO_SOCK_REUSEADDR)) {
+ BIO_closesocket(*sock);
+ *sock = INVALID_SOCKET;
+ break;
+ }
+ }
+
+#ifndef OPENSSL_NO_SCTP
+ if (protocol == IPPROTO_SCTP) {
+ /*
+ * For SCTP we have to set various options on the socket prior to
+ * connecting. This is done automatically by BIO_new_dgram_sctp().
+ * We don't actually need the created BIO though so we free it again
+ * immediately.
+ */
+ BIO *tmpbio = BIO_new_dgram_sctp(*sock, BIO_NOCLOSE);
+
+ if (tmpbio == NULL) {
+ ERR_print_errors(bio_err);
+ return 0;
+ }
+ BIO_free(tmpbio);
+ }
+#endif
+
+ if (!BIO_connect(*sock, BIO_ADDRINFO_address(ai),
+ protocol == IPPROTO_TCP ? BIO_SOCK_NODELAY : 0)) {
BIO_closesocket(*sock);
*sock = INVALID_SOCKET;
continue;
}
if (*sock == INVALID_SOCKET) {
+ if (bindaddr != NULL && !found) {
+ BIO_printf(bio_err, "Can't bind %saddress for %s%s%s\n",
+ BIO_ADDRINFO_family(res) == AF_INET6 ? "IPv6 " :
+ BIO_ADDRINFO_family(res) == AF_INET ? "IPv4 " :
+ BIO_ADDRINFO_family(res) == AF_UNIX ? "unix " : "",
+ bindhost != NULL ? bindhost : "",
+ bindport != NULL ? ":" : "",
+ bindport != NULL ? bindport : "");
+ ERR_clear_error();
+ ret = 0;
+ }
ERR_print_errors(bio_err);
} else {
+ /* Remove any stale errors from previous connection attempts */
+ ERR_clear_error();
ret = 1;
}
+out:
+ if (bindaddr != NULL) {
+ BIO_ADDRINFO_free (bindaddr);
+ }
BIO_ADDRINFO_free(res);
return ret;
}
* 0 on failure, something other on success.
*/
int do_server(int *accept_sock, const char *host, const char *port,
- int family, int type,
- int (*cb) (const char *hostname, int s, int stype,
- unsigned char *context), unsigned char *context,
- int naccept)
+ int family, int type, int protocol, do_server_cb cb,
+ unsigned char *context, int naccept, BIO *bio_s_out)
{
int asock = 0;
int sock;
int i;
BIO_ADDRINFO *res = NULL;
+ const BIO_ADDRINFO *next;
+ int sock_family, sock_type, sock_protocol, sock_port;
+ const BIO_ADDR *sock_address;
+ int sock_options = BIO_SOCK_REUSEADDR;
int ret = 0;
- int protocol = (type == SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP);
- if (!BIO_sock_init())
+ if (BIO_sock_init() != 1)
return 0;
- if (!BIO_lookup(host, port, BIO_LOOKUP_SERVER, family, type, &res)) {
+ if (!BIO_lookup_ex(host, port, BIO_LOOKUP_SERVER, family, type, protocol,
+ &res)) {
ERR_print_errors(bio_err);
return 0;
}
-# ifdef AF_UNIX
- if (BIO_ADDRINFO_family(res) == AF_UNIX)
- protocol = 0;
-# endif
- /* Admitedly, these checks are quite paranoid, we should
- not get anything in the BIO_ADDRINFO chain that we haven't
- asked for */
+ /* Admittedly, these checks are quite paranoid, we should not get
+ * anything in the BIO_ADDRINFO chain that we haven't asked for */
OPENSSL_assert((family == AF_UNSPEC || family == BIO_ADDRINFO_family(res))
- && (type == 0 || type == BIO_ADDRINFO_socktype(res)));
+ && (type == 0 || type == BIO_ADDRINFO_socktype(res))
+ && (protocol == 0 || protocol == BIO_ADDRINFO_protocol(res)));
- asock = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
- BIO_ADDRINFO_protocol(res), 0);
+ sock_family = BIO_ADDRINFO_family(res);
+ sock_type = BIO_ADDRINFO_socktype(res);
+ sock_protocol = BIO_ADDRINFO_protocol(res);
+ sock_address = BIO_ADDRINFO_address(res);
+ next = BIO_ADDRINFO_next(res);
+ if (sock_family == AF_INET6)
+ sock_options |= BIO_SOCK_V6_ONLY;
+ if (next != NULL
+ && BIO_ADDRINFO_socktype(next) == sock_type
+ && BIO_ADDRINFO_protocol(next) == sock_protocol) {
+ if (sock_family == AF_INET
+ && BIO_ADDRINFO_family(next) == AF_INET6) {
+ sock_family = AF_INET6;
+ sock_address = BIO_ADDRINFO_address(next);
+ } else if (sock_family == AF_INET6
+ && BIO_ADDRINFO_family(next) == AF_INET) {
+ sock_options &= ~BIO_SOCK_V6_ONLY;
+ }
+ }
+
+ asock = BIO_socket(sock_family, sock_type, sock_protocol, 0);
if (asock == INVALID_SOCKET
- || !BIO_listen(asock, BIO_ADDRINFO_address(res), BIO_SOCK_REUSEADDR)) {
+ || !BIO_listen(asock, sock_address, sock_options)) {
BIO_ADDRINFO_free(res);
ERR_print_errors(bio_err);
if (asock != INVALID_SOCKET)
goto end;
}
+#ifndef OPENSSL_NO_SCTP
+ if (protocol == IPPROTO_SCTP) {
+ /*
+ * For SCTP we have to set various options on the socket prior to
+ * accepting. This is done automatically by BIO_new_dgram_sctp().
+ * We don't actually need the created BIO though so we free it again
+ * immediately.
+ */
+ BIO *tmpbio = BIO_new_dgram_sctp(asock, BIO_NOCLOSE);
+
+ if (tmpbio == NULL) {
+ BIO_closesocket(asock);
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ BIO_free(tmpbio);
+ }
+#endif
+
+ sock_port = BIO_ADDR_rawport(sock_address);
+
BIO_ADDRINFO_free(res);
+ res = NULL;
- if (accept_sock != NULL) {
- *accept_sock = asock;
+ if (sock_port == 0) {
+ /* dynamically allocated port, report which one */
+ union BIO_sock_info_u info;
+ char *hostname = NULL;
+ char *service = NULL;
+ int success = 0;
+
+ if ((info.addr = BIO_ADDR_new()) != NULL
+ && BIO_sock_info(asock, BIO_SOCK_INFO_ADDRESS, &info)
+ && (hostname = BIO_ADDR_hostname_string(info.addr, 1)) != NULL
+ && (service = BIO_ADDR_service_string(info.addr, 1)) != NULL
+ && BIO_printf(bio_s_out,
+ strchr(hostname, ':') == NULL
+ ? /* IPv4 */ "ACCEPT %s:%s\n"
+ : /* IPv6 */ "ACCEPT [%s]:%s\n",
+ hostname, service) > 0)
+ success = 1;
+
+ (void)BIO_flush(bio_s_out);
+ OPENSSL_free(hostname);
+ OPENSSL_free(service);
+ BIO_ADDR_free(info.addr);
+ if (!success) {
+ BIO_closesocket(asock);
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ } else {
+ (void)BIO_printf(bio_s_out, "ACCEPT\n");
+ (void)BIO_flush(bio_s_out);
}
+
+ if (accept_sock != NULL)
+ *accept_sock = asock;
for (;;) {
- BIO_ADDR *accepted_addr = NULL;
- char *name = NULL;
+ char sink[64];
+ struct timeval timeout;
+ fd_set readfds;
+
if (type == SOCK_STREAM) {
- if ((accepted_addr = BIO_ADDR_new()) == NULL) {
+ BIO_ADDR_free(ourpeer);
+ ourpeer = BIO_ADDR_new();
+ if (ourpeer == NULL) {
BIO_closesocket(asock);
- return 0;
+ ERR_print_errors(bio_err);
+ goto end;
}
- redoit:
- sock = BIO_accept_ex(asock, accepted_addr, 0);
+ do {
+ sock = BIO_accept_ex(asock, ourpeer, 0);
+ } while (sock < 0 && BIO_sock_should_retry(sock));
if (sock < 0) {
- if (BIO_sock_should_retry(ret)) {
- goto redoit;
- } else {
- ERR_print_errors(bio_err);
- BIO_ADDR_free(accepted_addr);
- SHUTDOWN(asock);
- break;
- }
+ ERR_print_errors(bio_err);
+ BIO_closesocket(asock);
+ break;
}
+ BIO_set_tcp_ndelay(sock, 1);
+ i = (*cb)(sock, type, protocol, context);
+
+ /*
+ * If we ended with an alert being sent, but still with data in the
+ * network buffer to be read, then calling BIO_closesocket() will
+ * result in a TCP-RST being sent. On some platforms (notably
+ * Windows) then this will result in the peer immediately abandoning
+ * the connection including any buffered alert data before it has
+ * had a chance to be read. Shutting down the sending side first,
+ * and then closing the socket sends TCP-FIN first followed by
+ * TCP-RST. This seems to allow the peer to read the alert data.
+ */
+ shutdown(sock, 1); /* SHUT_WR */
+ /*
+ * We just said we have nothing else to say, but it doesn't mean
+ * that the other side has nothing. It's even recommended to
+ * consume incoming data. [In testing context this ensures that
+ * alerts are passed on...]
+ */
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 500000; /* some extreme round-trip */
+ do {
+ FD_ZERO(&readfds);
+ openssl_fdset(sock, &readfds);
+ } while (select(sock + 1, &readfds, NULL, NULL, &timeout) > 0
+ && readsocket(sock, sink, sizeof(sink)) > 0);
+
+ BIO_closesocket(sock);
} else {
- sock = asock;
+ i = (*cb)(asock, type, protocol, context);
}
- /* accepted_addr is NULL if we're dealing with SOCK_DGRAM
- * this means that for SOCK_DGRAM, name will be NULL
- */
- if (accepted_addr != NULL) {
-#ifdef AF_UNIX
- if (family == AF_UNIX)
- name = BIO_ADDR_path_string(accepted_addr);
- else
-#endif
- name = BIO_ADDR_hostname_string(accepted_addr, 0);
- }
- i = (*cb) (name, sock, type, context);
- OPENSSL_free(name);
- BIO_ADDR_free(accepted_addr);
- if (type == SOCK_STREAM)
- SHUTDOWN2(sock);
if (naccept != -1)
naccept--;
if (i < 0 || naccept == 0) {
- SHUTDOWN2(asock);
+ BIO_closesocket(asock);
ret = i;
break;
}
if (family == AF_UNIX)
unlink(host);
# endif
+ BIO_ADDR_free(ourpeer);
+ ourpeer = NULL;
return ret;
}
projects / openssl.git / blobdiff