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