1 files changed, 87 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/ipc/ipcd/extensions/lock/src/ipcLockProtocol.cpp b/src/libs/xpcom18a4/ipc/ipcd/extensions/lock/src/ipcLockProtocol.cpp
new file mode 100644
index 00000000..5a7e7755
--- /dev/null
+++ b/src/libs/xpcom18a4/ipc/ipcd/extensions/lock/src/ipcLockProtocol.cpp
@@ -0,0 +1,87 @@
+/* ***** 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 Mozilla IPC.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Darin Fisher <darin@netscape.com>
+ *
+ * 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 ***** */
+
+#include <stdlib.h>
+#include <string.h>
+#include "prlog.h"
+#include "ipcLockProtocol.h"
+
+//-----------------------------------------------------------------------------
+
+static inline PRUint8 get_opcode(const PRUint8 *buf)
+{
+    return (buf[0] & 0x0f);
+}
+
+static inline PRUint8 get_flags(const PRUint8 *buf)
+{
+    return (buf[0] & 0xf0) >> 4;
+}
+
+static inline const char *get_key(const PRUint8 *buf)
+{
+    return ((const char *) buf) + 1;
+}
+
+//-----------------------------------------------------------------------------
+
+PRUint8 *
+IPC_FlattenLockMsg(const ipcLockMsg *msg, PRUint32 *bufLen)
+{
+    PRUint32 len = 1                 // header byte
+                 + strlen(msg->key)  // key
+                 + 1;                // null terminator
+
+    PRUint8 *buf = (PRUint8 *) ::operator new(len);
+    if (!buf)
+        return NULL;
+
+    buf[0] = (msg->opcode | (msg->flags << 4));
+
+    memcpy(&buf[1], msg->key, len - 1);
+    *bufLen = len;
+    return buf;
+}
+
+void
+IPC_UnflattenLockMsg(const PRUint8 *buf, PRUint32 bufLen, ipcLockMsg *msg)
+{
+    PR_ASSERT(bufLen > 2); // malformed buffer otherwise
+    msg->opcode = get_opcode(buf);
+    msg->flags = get_flags(buf);
+    msg->key = get_key(buf);
+}