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239 lines
6.6 KiB
C
239 lines
6.6 KiB
C
/*
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* "Default" SSLSocket methods, used by sockets that do neither SSL nor socks.
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* $Id: ssldef.c,v 1.11 2006/04/20 08:46:34 nelson%bolyard.com Exp $ */
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#include "cert.h"
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#include "ssl.h"
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#include "sslimpl.h"
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#if defined(WIN32)
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#define MAP_ERROR(from,to) if (err == from) { PORT_SetError(to); }
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#define DEFINE_ERROR PRErrorCode err = PR_GetError();
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#else
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#define MAP_ERROR(from,to)
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#define DEFINE_ERROR
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#endif
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int ssl_DefConnect(sslSocket *ss, const PRNetAddr *sa)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->connect(lower, sa, ss->cTimeout);
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return rv;
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}
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int ssl_DefBind(sslSocket *ss, const PRNetAddr *addr)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->bind(lower, addr);
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return rv;
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}
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int ssl_DefListen(sslSocket *ss, int backlog)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->listen(lower, backlog);
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return rv;
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}
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int ssl_DefShutdown(sslSocket *ss, int how)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->shutdown(lower, how);
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return rv;
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}
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int ssl_DefRecv(sslSocket *ss, unsigned char *buf, int len, int flags)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->recv(lower, (void *)buf, len, flags, ss->rTimeout);
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if (rv < 0) {
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DEFINE_ERROR
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MAP_ERROR(PR_SOCKET_SHUTDOWN_ERROR, PR_CONNECT_RESET_ERROR)
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} else if (rv > len) {
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PORT_Assert(rv <= len);
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PORT_SetError(PR_BUFFER_OVERFLOW_ERROR);
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rv = SECFailure;
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}
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return rv;
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}
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/* Default (unencrypted) send.
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* For blocking sockets, always returns len or SECFailure, no short writes.
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* For non-blocking sockets:
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* Returns positive count if any data was written, else returns SECFailure.
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* Short writes may occur. Does not return SECWouldBlock.
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*/
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int ssl_DefSend(sslSocket *ss, const unsigned char *buf, int len, int flags)
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{
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PRFileDesc *lower = ss->fd->lower;
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int sent = 0;
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#if NSS_DISABLE_NAGLE_DELAYS
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/* Although this is overkill, we disable Nagle delays completely for
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** SSL sockets.
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*/
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if (ss->opt.useSecurity && !ss->delayDisabled) {
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ssl_EnableNagleDelay(ss, PR_FALSE); /* ignore error */
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ss->delayDisabled = 1;
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}
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#endif
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do {
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int rv = lower->methods->send(lower, (const void *)(buf + sent),
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len - sent, flags, ss->wTimeout);
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if (rv < 0) {
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PRErrorCode err = PR_GetError();
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if (err == PR_WOULD_BLOCK_ERROR) {
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ss->lastWriteBlocked = 1;
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return sent ? sent : SECFailure;
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}
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ss->lastWriteBlocked = 0;
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MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR)
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/* Loser */
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return rv;
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}
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sent += rv;
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} while (len > sent);
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ss->lastWriteBlocked = 0;
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return sent;
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}
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int ssl_DefRead(sslSocket *ss, unsigned char *buf, int len)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->read(lower, (void *)buf, len);
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if (rv < 0) {
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DEFINE_ERROR
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MAP_ERROR(PR_SOCKET_SHUTDOWN_ERROR, PR_CONNECT_RESET_ERROR)
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}
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return rv;
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}
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int ssl_DefWrite(sslSocket *ss, const unsigned char *buf, int len)
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{
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PRFileDesc *lower = ss->fd->lower;
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int sent = 0;
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do {
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int rv = lower->methods->write(lower, (const void *)(buf + sent),
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len - sent);
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if (rv < 0) {
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PRErrorCode err = PR_GetError();
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if (err == PR_WOULD_BLOCK_ERROR) {
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ss->lastWriteBlocked = 1;
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return sent ? sent : SECFailure;
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}
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ss->lastWriteBlocked = 0;
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MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR)
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/* Loser */
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return rv;
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}
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sent += rv;
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} while (len > sent);
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ss->lastWriteBlocked = 0;
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return sent;
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}
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int ssl_DefGetpeername(sslSocket *ss, PRNetAddr *name)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->getpeername(lower, name);
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return rv;
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}
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int ssl_DefGetsockname(sslSocket *ss, PRNetAddr *name)
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{
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PRFileDesc *lower = ss->fd->lower;
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int rv;
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rv = lower->methods->getsockname(lower, name);
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return rv;
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}
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int ssl_DefClose(sslSocket *ss)
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{
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PRFileDesc *fd;
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PRFileDesc *popped;
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int rv;
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fd = ss->fd;
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/* First, remove the SSL layer PRFileDesc from the socket's stack,
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** then invoke the SSL layer's PRFileDesc destructor.
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** This must happen before the next layer down is closed.
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*/
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PORT_Assert(fd->higher == NULL);
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if (fd->higher) {
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PORT_SetError(PR_BAD_DESCRIPTOR_ERROR);
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return SECFailure;
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}
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ss->fd = NULL;
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/* PR_PopIOLayer will swap the contents of the top two PRFileDescs on
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** the stack, and then remove the second one. This way, the address
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** of the PRFileDesc on the top of the stack doesn't change.
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*/
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popped = PR_PopIOLayer(fd, PR_TOP_IO_LAYER);
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popped->dtor(popped);
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/* fd is now the PRFileDesc for the next layer down.
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** Now close the underlying socket.
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*/
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rv = fd->methods->close(fd);
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ssl_FreeSocket(ss);
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SSL_TRC(5, ("%d: SSL[%d]: closing, rv=%d errno=%d",
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SSL_GETPID(), fd, rv, PORT_GetError()));
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return rv;
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}
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