Linux: enable building with a local version of libssl.

net/third_party/nss/ssl/ssldef.c

+/*
+ * "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: ssldef.c,v 1.11 2006/04/20 08:46:34 nelson%bolyard.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); }
+#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;
+}