ssldef.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:6k
- /*
- * "Default" SSLSocket methods, used by sockets that do neither SSL nor socks.
- *
- * 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 Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- *
- * $Id: ssldef.c,v 1.2 2000/10/07 02:22:22 nelsonb%netscape.com Exp $
- */
- #include "cert.h"
- #include "ssl.h"
- #include "sslimpl.h"
- #if defined(WIN32)
- #define MAP_ERROR(from,to) if (err == from) { PORT_SetError(to); }
- #else
- #define MAP_ERROR(from,to)
- #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) {
- PRErrorCode err = PR_GetError();
- 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.
- * Returns SECSuccess or SECFailure, NOT SECWouldBlock.
- * Returns positive count if any data was written.
- * ALWAYS check for a short write after calling ssl_DefSend.
- */
- int ssl_DefSend(sslSocket *ss, const unsigned char *buf, int len, int flags)
- {
- PRFileDesc *lower = ss->fd->lower;
- int rv, count;
- count = 0;
- for (;;) {
- rv = lower->methods->send(lower, (const void *)buf, len,
- flags, ss->wTimeout);
- if (rv < 0) {
- PRErrorCode err = PR_GetError();
- if (err == PR_WOULD_BLOCK_ERROR) {
- return count ? count : rv;
- }
- MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR)
- /* Loser */
- return rv;
- }
- count += rv;
- if (rv < len) {
- /* Short send. Send the rest in the next call */
- buf += rv;
- len -= rv;
- continue;
- }
- break;
- }
- return count;
- }
- 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) {
- PRErrorCode err = PR_GetError();
- 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 rv, count;
- count = 0;
- for (;;) {
- rv = lower->methods->write(lower, (void *)buf, len);
- if (rv < 0) {
- PRErrorCode err = PR_GetError();
- if (err == PR_WOULD_BLOCK_ERROR) {
- return count ? count : rv;
- }
- MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR)
- /* Loser */
- return rv;
- }
- count += rv;
- if (rv != len) {
- /* Short write. Send the rest in the next call */
- buf += rv;
- len -= rv;
- continue;
- }
- break;
- }
- return count;
- }
- 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;
- }