/* ***** 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 * * 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 #include #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); }