572 lines
14 KiB
C
572 lines
14 KiB
C
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/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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commonnt.c
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Abstract:
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Common functionality between various parts of GUI mode-side processing.
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The routines in this library are shared only by other LIBs in the
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w95upgnt tree.
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Author:
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Jim Schmidt (jimschm) 18-Aug-1998
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Revision History:
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Name (alias) Date Description
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--*/
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#include "pch.h"
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#define DBG_DATAFILTER "Data Filter"
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BOOL
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WINAPI
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CommonNt_Entry (
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IN HINSTANCE Instance,
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IN DWORD Reason,
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IN PVOID lpv
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)
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/*++
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Routine Description:
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CommonNt_Entry is a DllMain-like init funciton, called by w95upgnt\dll.
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This function is called at process attach and detach.
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Arguments:
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Instance - (OS-supplied) instance handle for the DLL
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Reason - (OS-supplied) indicates attach or detatch from process or
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thread
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lpv - unused
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Return Value:
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Return value is always TRUE (indicating successful init).
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--*/
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{
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switch (Reason) {
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case DLL_PROCESS_ATTACH:
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// Nothing to do...
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break;
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case DLL_PROCESS_DETACH:
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// Nothing to do...
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break;
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}
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return TRUE;
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}
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typedef enum {
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STATE_NO_PATH,
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STATE_PATH_FOUND,
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STATE_IN_PATH,
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STATE_PATH_CHANGED,
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STATE_PATH_DELETED,
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STATE_LONG_PATH_CHANGED,
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STATE_SHORT_PATH_CHANGED,
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STATE_RETURN_PATH
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} SCANSTATE;
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BOOL
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pIsPathSeparator (
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CHARTYPE ch
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)
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{
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return ch == 0 ||
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ch == TEXT(',') ||
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ch == TEXT(';') ||
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_istspace (ch) != 0;
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}
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BOOL
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pIsValidPathCharacter (
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CHARTYPE ch
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)
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{
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if (_istalnum (ch)) {
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return TRUE;
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}
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if (ch == TEXT(',') ||
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ch == TEXT(';') ||
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ch == TEXT('\"') ||
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ch == TEXT('<') ||
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ch == TEXT('>') ||
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ch == TEXT('|') ||
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ch == TEXT('?') ||
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ch == TEXT('*')
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) {
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return FALSE;
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}
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return TRUE;
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}
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CONVERTPATH_RC
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pGetReplacementPath (
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IN PCTSTR DataStart,
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IN PCTSTR Pos,
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OUT PCTSTR *OldStart,
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OUT PCTSTR *OldEnd,
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OUT PTSTR ReplacementStr
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)
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{
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CONVERTPATH_RC rc = CONVERTPATH_NOT_REMAPPED;
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SCANSTATE State;
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BOOL DontIncrement;
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PCTSTR OrgStart = NULL;
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TCHAR PathBuffer[MAX_TCHAR_PATH + 2];
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TCHAR RenamedFile[MAX_TCHAR_PATH];
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PTSTR PathBufferRoot = NULL;
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PTSTR PathBufferPtr = NULL;
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CONVERTPATH_RC ConvertCode = 0;
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BOOL ShortPath = FALSE;
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BOOL QuotesOn = FALSE;
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BOOL Done = FALSE;
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BOOL OrgPathHasSepChar = FALSE;
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BOOL NeedQuotes = FALSE;
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BOOL PathSepChar;
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PCTSTR p;
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BOOL QuotesOnColumn = FALSE;
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PCTSTR LastPathPosition = NULL;
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State = STATE_NO_PATH;
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PathBuffer[0] = TEXT('\"');
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//
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// Scan string of Pos for command line
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//
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while (!Done) {
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DontIncrement = FALSE;
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switch (State) {
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case STATE_NO_PATH:
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if (Pos[0] == 0) {
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Done = TRUE;
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break;
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}
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if (Pos[1] == TEXT(':') && Pos[2] == TEXT('\\')) {
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if (_istalpha (Pos[0])) {
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QuotesOn = FALSE;
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State = STATE_PATH_FOUND;
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DontIncrement = TRUE;
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}
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} else if (Pos[0] == TEXT('\"')) {
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if (_istalpha (Pos[1]) && Pos[2] == TEXT(':') && Pos[3] == TEXT('\\')) {
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QuotesOn = TRUE;
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State = STATE_PATH_FOUND;
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}
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}
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break;
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case STATE_PATH_FOUND:
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//
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// Initialize path attributes
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//
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QuotesOnColumn = QuotesOn;
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LastPathPosition = Pos;
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OrgStart = Pos;
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PathBufferRoot = &PathBuffer[1];
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PathBufferRoot[0] = Pos[0];
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PathBufferRoot[1] = Pos[1];
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PathBufferPtr = &PathBufferRoot[2];
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Pos = &Pos[2];
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ShortPath = FALSE;
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OrgPathHasSepChar = FALSE;
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State = STATE_IN_PATH;
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DontIncrement = TRUE;
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break;
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case STATE_IN_PATH:
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//
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// Is this a closing quote? If so, look for replacement path
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// and fail entire string if it's not replaced.
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//
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if (Pos[0] == TEXT(':')) {
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//
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// bogus. This cannot be a path, it has two ':' characters
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//
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Pos = _tcsdec (LastPathPosition, Pos);
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if (Pos) {
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Pos = _tcsdec (LastPathPosition, Pos);
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if (Pos) {
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if (Pos[0] == TEXT('\"')) {
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Pos = NULL;
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}
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}
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}
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if (!Pos) {
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Pos = LastPathPosition;
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QuotesOn = QuotesOnColumn;
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}
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State = STATE_NO_PATH;
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break;
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}
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if (QuotesOn && *Pos == TEXT('\"')) {
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*PathBufferPtr = 0;
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ConvertCode = ConvertWin9xPath (PathBufferRoot);
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if (ConvertCode != CONVERTPATH_NOT_REMAPPED) {
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State = STATE_PATH_CHANGED;
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DontIncrement = TRUE;
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break;
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}
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State = STATE_NO_PATH;
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break;
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}
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//
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// Is this a path separator? If so, look in memdb for replacement path.
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//
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if (Pos[0] == L'\\') {
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PathSepChar = pIsPathSeparator ((CHARTYPE) _tcsnextc (Pos + 1));
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} else {
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PathSepChar = pIsPathSeparator ((CHARTYPE) _tcsnextc (Pos));
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}
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if (PathSepChar) {
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*PathBufferPtr = 0;
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ConvertCode = ConvertWin9xPath (PathBufferRoot);
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if (ConvertCode != CONVERTPATH_NOT_REMAPPED) {
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State = STATE_PATH_CHANGED;
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DontIncrement = TRUE;
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break;
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}
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}
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//
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// Check for end of data
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//
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if (Pos[0] == 0) {
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Done = TRUE;
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break;
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}
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//
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// Copy path character to buffer, break if we exceed max path length
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//
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*PathBufferPtr = *Pos;
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PathBufferPtr = _tcsinc (PathBufferPtr);
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if (PathBufferPtr == PathBufferRoot + MAX_TCHAR_PATH) {
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Pos = OrgStart;
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State = STATE_NO_PATH;
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break;
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}
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//
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// Test for short path
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//
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if (*Pos == TEXT('~')) {
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ShortPath = TRUE;
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}
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OrgPathHasSepChar |= PathSepChar;
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break;
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case STATE_PATH_CHANGED:
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if (ConvertCode == CONVERTPATH_DELETED) {
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State = STATE_PATH_DELETED;
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} else if (ShortPath) {
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State = STATE_SHORT_PATH_CHANGED;
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} else {
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State = STATE_LONG_PATH_CHANGED;
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}
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//
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// If replacement has introduced a path separator, set the
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// NeedQuotes flag. Quotes will later be added if the path
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// is only part of the complete string.
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//
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NeedQuotes = FALSE;
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if (!OrgPathHasSepChar) {
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for (p = PathBufferRoot ; *p ; p = _tcsinc (p)) {
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if (pIsPathSeparator ((CHARTYPE) _tcsnextc (p))) {
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NeedQuotes = TRUE;
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break;
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}
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}
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}
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DontIncrement = TRUE;
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break;
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case STATE_PATH_DELETED:
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State = STATE_RETURN_PATH;
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DontIncrement = TRUE;
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break;
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case STATE_SHORT_PATH_CHANGED:
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if (OurGetShortPathName (PathBufferRoot, RenamedFile, MAX_TCHAR_PATH)) {
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PathBufferRoot = RenamedFile;
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}
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State = STATE_RETURN_PATH;
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DontIncrement = TRUE;
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break;
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case STATE_LONG_PATH_CHANGED:
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if (!QuotesOn && NeedQuotes) {
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if (OrgStart != DataStart || Pos[0] != 0) {
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PathBufferPtr = _tcschr (PathBufferRoot, 0);
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PathBufferPtr[0] = TEXT('\"');
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PathBufferPtr[1] = 0;
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PathBufferRoot = PathBuffer;
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}
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}
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State = STATE_RETURN_PATH;
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DontIncrement = TRUE;
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break;
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case STATE_RETURN_PATH:
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rc = ConvertCode;
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StringCopy (ReplacementStr, PathBufferRoot);
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*OldStart = OrgStart;
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*OldEnd = Pos;
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Done = TRUE;
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break;
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}
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if (!DontIncrement) {
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Pos = _tcsinc (Pos);
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}
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}
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return rc;
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}
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BOOL
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ConvertWin9xCmdLine (
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IN OUT PTSTR CmdLine, // MAX_CMDLINE buffer
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IN PCTSTR ObjectForDbgMsg, OPTIONAL
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OUT PBOOL PointsToDeletedItem OPTIONAL
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)
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{
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TCHAR NewCmdLine[MAX_CMDLINE];
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TCHAR NewPathBuffer[MAX_TCHAR_PATH];
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PCTSTR CmdLineStart;
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PCTSTR ReplaceStart;
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PCTSTR ExtraParamsStart;
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CONVERTPATH_RC ConvertCode;
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PTSTR EndOfNewCmdLine;
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UINT End = 0;
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BOOL NewCmdLineFlag = FALSE;
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INT Bytes;
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#ifdef DEBUG
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TCHAR OriginalCmdLine[MAX_CMDLINE];
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StringCopy (OriginalCmdLine, CmdLine);
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#endif
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if (PointsToDeletedItem) {
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*PointsToDeletedItem = FALSE;
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}
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*NewCmdLine = 0;
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ExtraParamsStart = CmdLine;
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EndOfNewCmdLine = NewCmdLine;
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for(;;) {
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CmdLineStart = ExtraParamsStart;
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//
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// We must test for a command line argument that has quotes or
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// doesn't need quotes, and then test for an argument that needs
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// quotes but doesn't have them.
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//
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ConvertCode = pGetReplacementPath (
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CmdLine,
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CmdLineStart,
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&ReplaceStart,
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&ExtraParamsStart,
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NewPathBuffer
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);
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if (ConvertCode == CONVERTPATH_NOT_REMAPPED) {
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//
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// Rest of command line does not have changed files
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//
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||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// If a command line was found, we must replace the text between
|
||
|
|
// ReplaceStart and ExtraParamsStart with NewPathBuffer. To do this,
|
||
|
|
// we copy the unchanged portion (from CmdLineStart to ReplaceStart)
|
||
|
|
// to the caller's buffer, and append the replacement text. The
|
||
|
|
// search continues, searching the rest of the command line specified
|
||
|
|
// by ExtraParamsStart.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (ConvertCode == CONVERTPATH_DELETED && PointsToDeletedItem) {
|
||
|
|
*PointsToDeletedItem = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ObjectForDbgMsg) {
|
||
|
|
|
||
|
|
DEBUGMSG_IF ((
|
||
|
|
ConvertCode == CONVERTPATH_DELETED,
|
||
|
|
DBG_WARNING,
|
||
|
|
"%s still points to the deleted Win9x file %s (command line: %s).",
|
||
|
|
ObjectForDbgMsg,
|
||
|
|
NewPathBuffer,
|
||
|
|
OriginalCmdLine
|
||
|
|
));
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Path has changed, so we replace the path in the command line.
|
||
|
|
//
|
||
|
|
|
||
|
|
End = ((PBYTE) EndOfNewCmdLine - (PBYTE) NewCmdLine) +
|
||
|
|
((PBYTE) ReplaceStart - (PBYTE) CmdLineStart) +
|
||
|
|
SizeOfString (NewPathBuffer);
|
||
|
|
|
||
|
|
if (End > sizeof (NewCmdLine)) {
|
||
|
|
LOG ((LOG_ERROR, "Converting CmdLine: Conversion caused buffer overrun - aborting"));
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ReplaceStart > CmdLineStart) {
|
||
|
|
StringCopyAB (EndOfNewCmdLine, CmdLineStart, ReplaceStart);
|
||
|
|
}
|
||
|
|
|
||
|
|
EndOfNewCmdLine = _tcsappend (EndOfNewCmdLine, NewPathBuffer);
|
||
|
|
|
||
|
|
NewCmdLineFlag |= (ConvertCode == CONVERTPATH_REMAPPED);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NewCmdLineFlag) {
|
||
|
|
//
|
||
|
|
// We have changed the command line, so complete the processing.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (ExtraParamsStart && *ExtraParamsStart) {
|
||
|
|
End = (PBYTE) EndOfNewCmdLine - (PBYTE) NewCmdLine + SizeOfString (ExtraParamsStart);
|
||
|
|
if (End > sizeof (NewCmdLine)) {
|
||
|
|
LOG ((LOG_ERROR, "Converting CmdLine: Conversion caused buffer overrun -- aborting (2)"));
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
StringCopy (EndOfNewCmdLine, ExtraParamsStart);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// End is the number of bytes in NewCmdLine
|
||
|
|
//
|
||
|
|
|
||
|
|
Bytes = (INT) End - sizeof(TCHAR);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
//
|
||
|
|
// No changes yet, initialize Bytes
|
||
|
|
//
|
||
|
|
|
||
|
|
Bytes = (INT) ByteCount (CmdLine);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// In-place string conversion, first look for a complete match, and when
|
||
|
|
// that fails, look for a partial match.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (MappingSearchAndReplaceEx (
|
||
|
|
g_CompleteMatchMap,
|
||
|
|
NewCmdLineFlag ? NewCmdLine : CmdLine,
|
||
|
|
NewCmdLine,
|
||
|
|
Bytes,
|
||
|
|
NULL,
|
||
|
|
sizeof (NewCmdLine),
|
||
|
|
STRMAP_COMPLETE_MATCH_ONLY,
|
||
|
|
NULL,
|
||
|
|
NULL
|
||
|
|
)) {
|
||
|
|
|
||
|
|
NewCmdLineFlag = TRUE;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
NewCmdLineFlag |= MappingSearchAndReplaceEx (
|
||
|
|
g_SubStringMap,
|
||
|
|
NewCmdLineFlag ? NewCmdLine : CmdLine,
|
||
|
|
NewCmdLine,
|
||
|
|
Bytes,
|
||
|
|
NULL,
|
||
|
|
sizeof (NewCmdLine),
|
||
|
|
STRMAP_ANY_MATCH,
|
||
|
|
NULL,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NewCmdLineFlag) {
|
||
|
|
DEBUGMSG ((
|
||
|
|
DBG_DATAFILTER,
|
||
|
|
"Command line %s was modified to %s",
|
||
|
|
OriginalCmdLine,
|
||
|
|
NewCmdLine
|
||
|
|
));
|
||
|
|
|
||
|
|
StringCopy (CmdLine, NewCmdLine);
|
||
|
|
}
|
||
|
|
|
||
|
|
return NewCmdLineFlag;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|