diff options
Diffstat (limited to 'src/libs/xpcom18a4/ipc/ipcd/util/public')
4 files changed, 242 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/ipc/ipcd/util/public/.cvsignore b/src/libs/xpcom18a4/ipc/ipcd/util/public/.cvsignore new file mode 100644 index 00000000..f3c7a7c5 --- /dev/null +++ b/src/libs/xpcom18a4/ipc/ipcd/util/public/.cvsignore @@ -0,0 +1 @@ +Makefile diff --git a/src/libs/xpcom18a4/ipc/ipcd/util/public/Makefile.in b/src/libs/xpcom18a4/ipc/ipcd/util/public/Makefile.in new file mode 100644 index 00000000..84d980c4 --- /dev/null +++ b/src/libs/xpcom18a4/ipc/ipcd/util/public/Makefile.in @@ -0,0 +1,53 @@ +# vim: noexpandtab ts=4 sw=4 +# ***** 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) 2003 +# the Initial Developer. All Rights Reserved. +# +# Contributor(s): +# Conrad Carlen <ccarlen@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 ***** + +DEPTH = ../../../.. +topsrcdir = @top_srcdir@ +srcdir = @srcdir@ +VPATH = @srcdir@ + +include $(DEPTH)/config/autoconf.mk + +MODULE = ipcd + +EXPORTS = \ + ipcMessageReader.h \ + ipcMessageWriter.h \ + $(NULL) + +include $(topsrcdir)/config/rules.mk diff --git a/src/libs/xpcom18a4/ipc/ipcd/util/public/ipcMessageReader.h b/src/libs/xpcom18a4/ipc/ipcd/util/public/ipcMessageReader.h new file mode 100644 index 00000000..f93bfa20 --- /dev/null +++ b/src/libs/xpcom18a4/ipc/ipcd/util/public/ipcMessageReader.h @@ -0,0 +1,89 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* ***** 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) 2003 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Conrad Carlen <ccarlen@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 ***** */ + +#ifndef ipcMessageReader_h__ +#define ipcMessageReader_h__ + +#include "prtypes.h" + +//***************************************************************************** +// ipcMessageReader +// +// Reads from a const buffer supplied to it. Does not take ownership of the +// buffer. Bytes are read in native endianess, as ipcMessageWriter writes them +// in native endianess. +//***************************************************************************** + +class ipcMessageReader +{ +public: + ipcMessageReader(const PRUint8* inBuffer, PRUint32 bufferSize) : + mBuf(inBuffer), mBufEnd(inBuffer + bufferSize), + mBufPtr(mBuf), + mError(PR_FALSE) + { } + + ~ipcMessageReader() + { } + + // Returns PR_TRUE if an error has occured at any point + // during the lifetime of this object. Any read operation + // will safely return 0 on an error condition. + PRBool HasError() + { return mError; } + + PRUint8 GetInt8(); + PRUint16 GetInt16(); + PRUint32 GetInt32(); + PRInt32 GetBytes(void* destBuffer, PRInt32 n); + + // Returns data at the current read position. + const PRUint8* GetPtr() + { return mBufPtr; } + + // Returns PR_TRUE if the new position is within the buffer. + // Returns PR_FALSE and sets error state if not. + PRBool AdvancePtr(PRInt32 n); + +private: + const PRUint8 *mBuf, *mBufEnd; + const PRUint8 *mBufPtr; + PRBool mError; +}; + +#endif // ipcMessageReader_h__ diff --git a/src/libs/xpcom18a4/ipc/ipcd/util/public/ipcMessageWriter.h b/src/libs/xpcom18a4/ipc/ipcd/util/public/ipcMessageWriter.h new file mode 100644 index 00000000..8e0a8178 --- /dev/null +++ b/src/libs/xpcom18a4/ipc/ipcd/util/public/ipcMessageWriter.h @@ -0,0 +1,99 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* ***** 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) 2003 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Conrad Carlen <ccarlen@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 ***** */ + +#ifndef ipcMessageWriter_h__ +#define ipcMessageWriter_h__ + +#include "prtypes.h" + +//***************************************************************************** +// ipcMessageWriter +// +// Creates a block of memory and resizes it in order to hold writes. The +// block will be freed when this object is destroyed. Bytes are written in +// native endianess, as ipcMessageReader reads them in native endianess. +//***************************************************************************** + +class ipcMessageWriter +{ +public: + ipcMessageWriter(PRUint32 initialCapacity) : + mBuf(NULL), + mBufPtr(NULL), mBufEnd(NULL), + mCapacity(0), + mError(PR_FALSE) + { + EnsureCapacity(initialCapacity); + } + + ~ipcMessageWriter(); + + // Returns PR_TRUE if an error has occured at any point + // during the lifetime of this object, due to the buffer + // not being able to be grown to the required size. + PRBool HasError() + { return mError; } + + void PutInt8(PRUint8 val); + void PutInt16(PRUint16 val); + void PutInt32(PRUint32 val); + PRUint32 PutBytes(const void* src, PRUint32 n); + + // Returns the beginning of the buffer. Do not free this. + PRUint8* GetBuffer() + { return mBuf; } + + PRInt32 GetSize() + { return mBufPtr - mBuf; } + +private: + PRBool EnsureCapacity(PRInt32 sizeNeeded) + { + return (mBuf && ((mBufPtr + sizeNeeded) <= mBufEnd)) ? + PR_TRUE : GrowCapacity(sizeNeeded); + } + PRBool GrowCapacity(PRInt32 sizeNeeded); + +private: + PRUint8 *mBuf; + PRUint8 *mBufPtr, *mBufEnd; + PRInt32 mCapacity; + PRBool mError; +}; + +#endif // ipcMessageWriter_h__ |