/*
* CMD.C - command-line interface.
*
*
* History:
*
* 17 Jun 1994 (Tim Norman)
* started.
*
* 08 Aug 1995 (Matt Rains)
* I have cleaned up the source code. changes now bring this source
* into guidelines for recommended programming practice.
*
* A added the the standard FreeDOS GNU licence test to the
* initialize() function.
*
* Started to replace puts() with printf(). this will help
* standardize output. please follow my lead.
*
* I have added some constants to help making changes easier.
*
* 15 Dec 1995 (Tim Norman)
* major rewrite of the code to make it more efficient and add
* redirection support (finally!)
*
* 06 Jan 1996 (Tim Norman)
* finished adding redirection support! Changed to use our own
* exec code (MUCH thanks to Svante Frey!!)
*
* 29 Jan 1996 (Tim Norman)
* added support for CHDIR, RMDIR, MKDIR, and ERASE, as per
* suggestion of Steffan Kaiser
*
* changed "file not found" error message to "bad command or
* filename" thanks to Dustin Norman for noticing that confusing
* message!
*
* changed the format to call internal commands (again) so that if
* they want to split their commands, they can do it themselves
* (none of the internal functions so far need that much power, anyway)
*
* 27 Aug 1996 (Tim Norman)
* added in support for Oliver Mueller's ALIAS command
*
* 14 Jun 1997 (Steffan Kaiser)
* added ctrl-break handling and error level
*
* 16 Jun 1998 (Rob Lake)
* Runs command.com if /P is specified in command line. Command.com
* also stays permanent. If /C is in the command line, starts the
* program next in the line.
*
* 21 Jun 1998 (Rob Lake)
* Fixed up /C so that arguments for the program
*
* 08-Jul-1998 (John P. Price)
* Now sets COMSPEC environment variable
* misc clean up and optimization
* added date and time commands
* changed to using spawnl instead of exec. exec does not copy the
* environment to the child process!
*
* 14 Jul 1998 (Hans B Pufal)
* Reorganised source to be more efficient and to more closely
* follow MS-DOS conventions. (eg %..% environment variable
* replacement works form command line as well as batch file.
*
* New organisation also properly support nested batch files.
*
* New command table structure is half way towards providing a
* system in which COMMAND will find out what internal commands
* are loaded
*
* 24 Jul 1998 (Hans B Pufal) [HBP_003]
* Fixed return value when called with /C option
*
* 27 Jul 1998 John P. Price
* added config.h include
*
* 28 Jul 1998 John P. Price
* added showcmds function to show commands and options available
*
* 07-Aug-1998 (John P Price <linux-guru@gcfl.net>)
* Fixed carriage return output to better match MSDOS with echo
* on or off. (marked with "JPP 19980708")
*
* 07-Dec-1998 (Eric Kohl)
* First ReactOS release.
* Extended length of commandline buffers to 512.
*
* 13-Dec-1998 (Eric Kohl)
* Added COMSPEC environment variable.
* Added "/t" support (color) on cmd command line.
*
* 07-Jan-1999 (Eric Kohl)
* Added help text ("cmd /?").
*
* 25-Jan-1999 (Eric Kohl)
* Unicode and redirection safe!
* Fixed redirections and piping.
* Piping is based on temporary files, but basic support
* for anonymous pipes already exists.
*
* 27-Jan-1999 (Eric Kohl)
* Replaced spawnl() by CreateProcess().
*
* 22-Oct-1999 (Eric Kohl)
* Added break handler.
*
* 15-Dec-1999 (Eric Kohl)
* Fixed current directory
*
* 28-Dec-1999 (Eric Kohl)
* Restore window title after program/batch execution
*
* 03-Feb-2001 (Eric Kohl)
* Workaround because argc[0] is NULL under ReactOS
*
* 23-Feb-2001 (Carl Nettelblad <cnettel@hem.passagen.se>)
* %envvar% replacement conflicted with for.
*
* 30-Apr-2004 (Filip Navara <xnavara@volny.cz>)
* Make MakeSureDirectoryPathExistsEx unicode safe.
*
* 28-Mai-2004
* Removed MakeSureDirectoryPathExistsEx.
* Use the current directory if GetTempPath fails.
*
* 12-Jul-2004 (Jens Collin <jens.collin@lakhei.com>)
* Added ShellExecute call when all else fails to be able to "launch" any file.
*
* 02-Apr-2005 (Magnus Olsen <magnus@greatlord.com>)
* Remove all hardcode string to En.rc
*
* 06-May-2005 (Klemens Friedl <frik85@gmail.com>)
* Add 'help' command (list all commands plus description)
*
* 06-jul-2005 (Magnus Olsen <magnus@greatlord.com>)
* translate '%errorlevel%' to the internal value.
* Add proper memory alloc ProcessInput, the error
* handling for memory handling need to be improve
*/
#include "precomp.h"
#include <reactos/buildno.h>
#include <reactos/version.h>
typedef NTSTATUS (WINAPI *NtQueryInformationProcessProc)(HANDLE, PROCESSINFOCLASS,
PVOID, ULONG, PULONG);
typedef NTSTATUS (WINAPI *NtReadVirtualMemoryProc)(HANDLE, PVOID, PVOID, SIZE_T, PSIZE_T);
BOOL bExit = FALSE; /* Indicates EXIT was typed */
BOOL bCanExit = TRUE; /* Indicates if this shell is exitable */
BOOL bCtrlBreak = FALSE; /* Ctrl-Break or Ctrl-C hit */
BOOL bIgnoreEcho = FALSE; /* Set this to TRUE to prevent a newline, when executing a command */
static BOOL fSingleCommand = 0; /* When we are executing something passed on the command line after /C or /K */
static BOOL bAlwaysStrip = FALSE;
INT nErrorLevel = 0; /* Errorlevel of last launched external program */
CRITICAL_SECTION ChildProcessRunningLock;
BOOL bDisableBatchEcho = FALSE;
BOOL bEnableExtensions = TRUE;
BOOL bDelayedExpansion = FALSE;
DWORD dwChildProcessId = 0;
LPTSTR lpOriginalEnvironment;
HANDLE CMD_ModuleHandle;
BOOL bTitleSet = FALSE; /* Indicates whether the console title has been changed and needs to be restored later */
TCHAR szCurTitle[MAX_PATH];
static NtQueryInformationProcessProc NtQueryInformationProcessPtr = NULL;
static NtReadVirtualMemoryProc NtReadVirtualMemoryPtr = NULL;
/*
* Default output file stream translation mode is UTF8, but CMD switches
* allow to change it to either UTF16 (/U) or ANSI (/A).
*/
CON_STREAM_MODE OutputStreamMode = UTF8Text; // AnsiText;
#ifdef INCLUDE_CMD_COLOR
WORD wDefColor = 0; /* Default color */
#endif
/*
* convert
*
* insert commas into a number
*/
INT
ConvertULargeInteger(ULONGLONG num, LPTSTR des, UINT len, BOOL bPutSeparator)
{
TCHAR temp[39]; /* maximum length with nNumberGroups == 1 */
UINT n, iTarget;
if (len <= 1)
return 0;
n = 0;
iTarget = nNumberGroups;
if (!nNumberGroups)
bPutSeparator = FALSE;
do
{
if (iTarget == n && bPutSeparator)
{
iTarget += nNumberGroups + 1;
temp[38 - n++] = cThousandSeparator;
}
temp[38 - n++] = (TCHAR)(num % 10) + _T('0');
num /= 10;
} while (num > 0);
if (n > len-1)
n = len-1;
memcpy(des, temp + 39 - n, n * sizeof(TCHAR));
des[n] = _T('\0');
return n;
}
/*
* Is a process a console process?
*/
static BOOL IsConsoleProcess(HANDLE Process)
{
NTSTATUS Status;
PROCESS_BASIC_INFORMATION Info;
PEB ProcessPeb;
SIZE_T BytesRead;
if (NULL == NtQueryInformationProcessPtr || NULL == NtReadVirtualMemoryPtr)
{
return TRUE;
}
Status = NtQueryInformationProcessPtr (
Process, ProcessBasicInformation,
&Info, sizeof(PROCESS_BASIC_INFORMATION), NULL);
if (! NT_SUCCESS(Status))
{
WARN ("NtQueryInformationProcess failed with status %08x\n", Status);
return TRUE;
}
Status = NtReadVirtualMemoryPtr (
Process, Info.PebBaseAddress, &ProcessPeb,
sizeof(PEB), &BytesRead);
if (! NT_SUCCESS(Status) || sizeof(PEB) != BytesRead)
{
WARN ("Couldn't read virt mem status %08x bytes read %Iu\n", Status, BytesRead);
return TRUE;
}
return IMAGE_SUBSYSTEM_WINDOWS_CUI == ProcessPeb.ImageSubsystem;
}
#ifdef _UNICODE
#define SHELLEXECUTETEXT "ShellExecuteExW"
#else
#define SHELLEXECUTETEXT "ShellExecuteExA"
#endif
typedef BOOL (WINAPI *MYEX)(LPSHELLEXECUTEINFO lpExecInfo);
HANDLE RunFile(DWORD flags, LPTSTR filename, LPTSTR params,
LPTSTR directory, INT show)
{
SHELLEXECUTEINFO sei;
HMODULE hShell32;
MYEX hShExt;
BOOL ret;
TRACE ("RunFile(%s)\n", debugstr_aw(filename));
hShell32 = LoadLibrary(_T("SHELL32.DLL"));
if (!hShell32)
{
WARN ("RunFile: couldn't load SHELL32.DLL!\n");
return NULL;
}
hShExt = (MYEX)(FARPROC)GetProcAddress(hShell32, SHELLEXECUTETEXT);
if (!hShExt)
{
WARN ("RunFile: couldn't find ShellExecuteExA/W in SHELL32.DLL!\n");
FreeLibrary(hShell32);
return NULL;
}
TRACE ("RunFile: ShellExecuteExA/W is at %x\n", hShExt);
memset(&sei, 0, sizeof sei);
sei.cbSize = sizeof sei;
sei.fMask = flags;
sei.lpFile = filename;
sei.lpParameters = params;
sei.lpDirectory = directory;
sei.nShow = show;
ret = hShExt(&sei);
TRACE ("RunFile: ShellExecuteExA/W returned 0x%p\n", ret);
FreeLibrary(hShell32);
return ret ? sei.hProcess : NULL;
}
static VOID
SetConTitle(LPCTSTR pszTitle)
{
TCHAR szNewTitle[MAX_PATH];
if (!pszTitle)
return;
/* Don't do anything if we run inside a batch file, or we are just running a single command */
if (bc || (fSingleCommand == 1))
return;
/* Save the original console title and build a new one */
GetConsoleTitle(szCurTitle, ARRAYSIZE(szCurTitle));
StringCchPrintf(szNewTitle, ARRAYSIZE(szNewTitle),
_T("%s - %s"), szCurTitle, pszTitle);
bTitleSet = TRUE;
ConSetTitle(szNewTitle);
}
static VOID
ResetConTitle(VOID)
{
/* Restore the original console title */
if (!bc && bTitleSet)
{
ConSetTitle(szCurTitle);
bTitleSet = FALSE;
}
}
/*
* This command (in First) was not found in the command table
*
* Full - output buffer to hold whole command line
* First - first word on command line
* Rest - rest of command line
*/
static INT
Execute(LPTSTR Full, LPTSTR First, LPTSTR Rest, PARSED_COMMAND *Cmd)
{
TCHAR *first, *rest, *dot;
DWORD dwExitCode = 0;
TCHAR *FirstEnd;
TCHAR szFullName[MAX_PATH];
TCHAR szFullCmdLine[CMDLINE_LENGTH];
TRACE ("Execute: \'%s\' \'%s\'\n", debugstr_aw(First), debugstr_aw(Rest));
/* Though it was already parsed once, we have a different set of rules
for parsing before we pass to CreateProcess */
if (First[0] == _T('/') || (First[0] && First[1] == _T(':')))
{
/* Use the entire first word as the program name (no change) */
FirstEnd = First + _tcslen(First);
}
else
{
/* If present in the first word, spaces and ,;=/ end the program
* name and become the beginning of its parameters. */
BOOL bInside = FALSE;
for (FirstEnd = First; *FirstEnd; FirstEnd++)
{
if (!bInside && (_istspace(*FirstEnd) || _tcschr(_T(",;=/"), *FirstEnd)))
break;
bInside ^= *FirstEnd == _T('"');
}
}
/* Copy the new first/rest into the buffer */
rest = &Full[FirstEnd - First + 1];
_tcscpy(rest, FirstEnd);
_tcscat(rest, Rest);
first = Full;
*FirstEnd = _T('\0');
_tcscpy(first, First);
/* check for a drive change */
if ((_istalpha (first[0])) && (!_tcscmp (first + 1, _T(":"))))
{
BOOL working = TRUE;
if (!SetCurrentDirectory(first))
{
/* Guess they changed disc or something, handle that gracefully and get to root */
TCHAR str[4];
str[0]=first[0];
str[1]=_T(':');
str[2]=_T('\\');
str[3]=0;
working = SetCurrentDirectory(str);
}
if (!working) ConErrResPuts (STRING_FREE_ERROR1);
return !working;
}
/* get the PATH environment variable and parse it */
/* search the PATH environment variable for the binary */
StripQuotes(First);
if (!SearchForExecutable(First, szFullName))
{
error_bad_command(first);
return 1;
}
/* Set the new console title */
FirstEnd = first + (FirstEnd - First); /* Point to the separating NULL in the full built string */
*FirstEnd = _T(' ');
SetConTitle(Full);
/* check if this is a .BAT or .CMD file */
dot = _tcsrchr (szFullName, _T('.'));
if (dot && (!_tcsicmp (dot, _T(".bat")) || !_tcsicmp (dot, _T(".cmd"))))
{
while (*rest == _T(' '))
rest++;
*FirstEnd = _T('\0');
TRACE ("[BATCH: %s %s]\n", debugstr_aw(szFullName), debugstr_aw(rest));
dwExitCode = Batch(szFullName, first, rest, Cmd);
}
else
{
/* exec the program */
PROCESS_INFORMATION prci;
STARTUPINFO stui;
/* build command line for CreateProcess(): FullName + " " + rest */
BOOL quoted = !!_tcschr(First, _T(' '));
_tcscpy(szFullCmdLine, quoted ? _T("\"") : _T(""));
_tcsncat(szFullCmdLine, First, CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
_tcsncat(szFullCmdLine, quoted ? _T("\"") : _T(""), CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
if (*rest)
{
_tcsncat(szFullCmdLine, _T(" "), CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
_tcsncat(szFullCmdLine, rest, CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
}
TRACE ("[EXEC: %s]\n", debugstr_aw(szFullCmdLine));
/* fill startup info */
memset(&stui, 0, sizeof(stui));
stui.cb = sizeof(stui);
stui.lpTitle = Full;
stui.dwFlags = STARTF_USESHOWWINDOW;
stui.wShowWindow = SW_SHOWDEFAULT;
/* Set the console to standard mode */
SetConsoleMode(ConStreamGetOSHandle(StdIn),
ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
if (CreateProcess(szFullName,
szFullCmdLine,
NULL,
NULL,
TRUE,
0,
NULL,
NULL,
&stui,
&prci))
{
CloseHandle(prci.hThread);
}
else
{
// See if we can run this with ShellExecute() ie myfile.xls
prci.hProcess = RunFile(SEE_MASK_NOCLOSEPROCESS | SEE_MASK_NO_CONSOLE,
szFullName,
rest,
NULL,
SW_SHOWNORMAL);
}
*FirstEnd = _T('\0');
if (prci.hProcess != NULL)
{
if (bc != NULL || fSingleCommand != 0 || IsConsoleProcess(prci.hProcess))
{
/* when processing a batch file or starting console processes: execute synchronously */
EnterCriticalSection(&ChildProcessRunningLock);
dwChildProcessId = prci.dwProcessId;
WaitForSingleObject(prci.hProcess, INFINITE);
LeaveCriticalSection(&ChildProcessRunningLock);
GetExitCodeProcess(prci.hProcess, &dwExitCode);
nErrorLevel = (INT)dwExitCode;
}
CloseHandle(prci.hProcess);
}
else
{
TRACE ("[ShellExecute failed!: %s]\n", debugstr_aw(Full));
error_bad_command(first);
dwExitCode = 1;
}
/* Restore the default console mode */
SetConsoleMode(ConStreamGetOSHandle(StdIn),
ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
SetConsoleMode(ConStreamGetOSHandle(StdOut),
ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
}
/* Update the local code page cache */
{
UINT uNewInputCodePage = GetConsoleCP();
UINT uNewOutputCodePage = GetConsoleOutputCP();
if ((InputCodePage != uNewInputCodePage) ||
(OutputCodePage != uNewOutputCodePage))
{
InputCodePage = uNewInputCodePage;
OutputCodePage = uNewOutputCodePage;
/* Reset the current thread UI language */
if (IsConsoleHandle(ConStreamGetOSHandle(StdOut)) ||
IsConsoleHandle(ConStreamGetOSHandle(StdErr)))
{
ConSetThreadUILanguage(0);
}
/* Update the streams cached code page */
ConStdStreamsSetCacheCodePage(InputCodePage, OutputCodePage);
/* Update the locale as well */
InitLocale();
}
}
/* Restore the original console title */
ResetConTitle();
return dwExitCode;
}
/*
* Look through the internal commands and determine whether or not this
* command is one of them. If it is, call the command. If not, call
* execute to run it as an external program.
*
* first - first word on command line
* rest - rest of command line
*/
INT
DoCommand(LPTSTR first, LPTSTR rest, PARSED_COMMAND *Cmd)
{
TCHAR *com;
TCHAR *cp;
LPTSTR param; /* Pointer to command's parameters */
INT cl;
LPCOMMAND cmdptr;
BOOL nointernal = FALSE;
INT ret;
TRACE ("DoCommand: (\'%s\' \'%s\')\n", debugstr_aw(first), debugstr_aw(rest));
/* Full command line */
com = cmd_alloc((_tcslen(first) + _tcslen(rest) + 2) * sizeof(TCHAR));
if (com == NULL)
{
error_out_of_memory();
return 1;
}
/* If present in the first word, these characters end the name of an
* internal command and become the beginning of its parameters. */
cp = first + _tcscspn(first, _T("\t +,/;=[]"));
for (cl = 0; cl < (cp - first); cl++)
{
/* These characters do it too, but if one of them is present,
* then we check to see if the word is a file name and skip
* checking for internal commands if so.
* This allows running programs with names like "echo.exe" */
if (_tcschr(_T(".:\\"), first[cl]))
{
TCHAR tmp = *cp;
*cp = _T('\0');
nointernal = IsExistingFile(first);
*cp = tmp;
break;
}
}
/* Scan internal command table */
for (cmdptr = cmds; !nointernal && cmdptr->name; cmdptr++)
{
if (!_tcsnicmp(first, cmdptr->name, cl) && cmdptr->name[cl] == _T('\0'))
{
_tcscpy(com, first);
_tcscat(com, rest);
param = &com[cl];
/* Skip over whitespace to rest of line, exclude 'echo' command */
if (_tcsicmp(cmdptr->name, _T("echo")) != 0)
{
while (_istspace(*param))
param++;
}
/* Set the new console title */
SetConTitle(com);
ret = cmdptr->func(param);
/* Restore the original console title */
ResetConTitle();
cmd_free(com);
return ret;
}
}
ret = Execute(com, first, rest, Cmd);
cmd_free(com);
return ret;
}
/*
* process the command line and execute the appropriate functions
* full input/output redirection and piping are supported
*/
INT ParseCommandLine(LPTSTR cmd)
{
INT Ret = 0;
PARSED_COMMAND *Cmd;
Cmd = ParseCommand(cmd);
if (!Cmd)
{
/* Return an adequate error code */
return (!bParseError ? 0 : 1);
}
Ret = ExecuteCommand(Cmd);
FreeCommand(Cmd);
return Ret;
}
/* Execute a command without waiting for it to finish. If it's an internal
* command or batch file, we must create a new cmd.exe process to handle it.
* TODO: For now, this just always creates a cmd.exe process.
* This works, but is inefficient for running external programs,
* which could just be run directly. */
static HANDLE
ExecuteAsync(PARSED_COMMAND *Cmd)
{
TCHAR CmdPath[MAX_PATH];
TCHAR CmdParams[CMDLINE_LENGTH], *ParamsEnd;
STARTUPINFO stui;
PROCESS_INFORMATION prci;
/* Get the path to cmd.exe */
GetModuleFileName(NULL, CmdPath, ARRAYSIZE(CmdPath));
/* Build the parameter string to pass to cmd.exe */
ParamsEnd = _stpcpy(CmdParams, _T("/S/D/C\""));
ParamsEnd = UnparseCommand(Cmd, ParamsEnd, &CmdParams[CMDLINE_LENGTH - 2]);
if (!ParamsEnd)
{
error_out_of_memory();
return NULL;
}
_tcscpy(ParamsEnd, _T("\""));
memset(&stui, 0, sizeof stui);
stui.cb = sizeof(STARTUPINFO);
if (!CreateProcess(CmdPath, CmdParams, NULL, NULL, TRUE, 0,
NULL, NULL, &stui, &prci))
{
ErrorMessage(GetLastError(), NULL);
return NULL;
}
CloseHandle(prci.hThread);
return prci.hProcess;
}
static INT
ExecutePipeline(PARSED_COMMAND *Cmd)
{
#ifdef FEATURE_REDIRECTION
HANDLE hInput = NULL;
HANDLE hOldConIn = GetStdHandle(STD_INPUT_HANDLE);
HANDLE hOldConOut = GetStdHandle(STD_OUTPUT_HANDLE);
HANDLE hProcess[MAXIMUM_WAIT_OBJECTS];
INT nProcesses = 0;
DWORD dwExitCode;
/* Do all but the last pipe command */
do
{
HANDLE hPipeRead, hPipeWrite;
if (nProcesses > (MAXIMUM_WAIT_OBJECTS - 2))
{
error_too_many_parameters(_T("|"));
goto failed;
}
/* Create the pipe that this process will write into.
* Make the handles non-inheritable initially, because this
* process shouldn't inherit the reading handle. */
if (!CreatePipe(&hPipeRead, &hPipeWrite, NULL, 0))
{
error_no_pipe();
goto failed;
}
/* The writing side of the pipe is STDOUT for this process */
SetHandleInformation(hPipeWrite, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
SetStdHandle(STD_OUTPUT_HANDLE, hPipeWrite);
/* Execute it (error check is done later for easier cleanup) */
hProcess[nProcesses] = ExecuteAsync(Cmd->Subcommands);
CloseHandle(hPipeWrite);
if (hInput)
CloseHandle(hInput);
/* The reading side of the pipe will be STDIN for the next process */
SetHandleInformation(hPipeRead, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
SetStdHandle(STD_INPUT_HANDLE, hPipeRead);
hInput = hPipeRead;
if (!hProcess[nProcesses])
goto failed;
nProcesses++;
Cmd = Cmd->Subcommands->Next;
} while (Cmd->Type == C_PIPE);
/* The last process uses the original STDOUT */
SetStdHandle(STD_OUTPUT_HANDLE, hOldConOut);
hProcess[nProcesses] = ExecuteAsync(Cmd);
if (!hProcess[nProcesses])
goto failed;
nProcesses++;
CloseHandle(hInput);
SetStdHandle(STD_INPUT_HANDLE, hOldConIn);
/* Wait for all processes to complete */
EnterCriticalSection(&ChildProcessRunningLock);
WaitForMultipleObjects(nProcesses, hProcess, TRUE, INFINITE);
LeaveCriticalSection(&ChildProcessRunningLock);
/* Use the exit code of the last process in the pipeline */
GetExitCodeProcess(hProcess[nProcesses - 1], &dwExitCode);
nErrorLevel = (INT)dwExitCode;
while (--nProcesses >= 0)
CloseHandle(hProcess[nProcesses]);
return nErrorLevel;
failed:
if (hInput)
CloseHandle(hInput);
while (--nProcesses >= 0)
{
TerminateProcess(hProcess[nProcesses], 0);
CloseHandle(hProcess[nProcesses]);
}
SetStdHandle(STD_INPUT_HANDLE, hOldConIn);
SetStdHandle(STD_OUTPUT_HANDLE, hOldConOut);
#endif
return nErrorLevel;
}
INT
ExecuteCommand(
IN PARSED_COMMAND *Cmd)
{
#define SeenGoto() \
(bc && bc->current == NULL)
PARSED_COMMAND *Sub;
LPTSTR First, Rest;
INT Ret = 0;
/* If we don't have any command, or if this is REM, ignore it */
if (!Cmd || (Cmd->Type == C_REM))
return 0;
/*
* Do not execute any command if we are about to exit CMD, or about to
* change batch execution context, e.g. in case of a CALL / GOTO / EXIT.
*/
if (bExit || SeenGoto())
return 0;
if (!PerformRedirection(Cmd->Redirections))
return 1;
switch (Cmd->Type)
{
case C_COMMAND:
Ret = 1;
First = DoDelayedExpansion(Cmd->Command.First);
if (First)
{
Rest = DoDelayedExpansion(Cmd->Command.Rest);
if (Rest)
{
Ret = DoCommand(First, Rest, Cmd);
cmd_free(Rest);
}
cmd_free(First);
}
/* Fall through */
case C_REM:
break;
case C_QUIET:
case C_BLOCK:
case C_MULTI:
for (Sub = Cmd->Subcommands; Sub && !SeenGoto(); Sub = Sub->Next)
Ret = ExecuteCommand(Sub);
break;
case C_OR:
Sub = Cmd->Subcommands;
Ret = ExecuteCommand(Sub);
if ((Ret != 0) && !SeenGoto())
{
nErrorLevel = Ret;
Ret = ExecuteCommand(Sub->Next);
}
break;
case C_AND:
Sub = Cmd->Subcommands;
Ret = ExecuteCommand(Sub);
if ((Ret == 0) && !SeenGoto())
Ret = ExecuteCommand(Sub->Next);
break;
case C_PIPE:
Ret = ExecutePipeline(Cmd);
break;
case C_FOR:
Ret = ExecuteFor(Cmd);
break;
case C_IF:
Ret = ExecuteIf(Cmd);
break;
}
UndoRedirection(Cmd->Redirections, NULL);
return Ret;
#undef SeenGoto
}
INT
ExecuteCommandWithEcho(
IN PARSED_COMMAND *Cmd)
{
/* Echo the reconstructed command line */
if (bEcho && !bDisableBatchEcho && Cmd && (Cmd->Type != C_QUIET))
{
if (!bIgnoreEcho)
ConOutChar(_T('\n'));
PrintPrompt();
EchoCommand(Cmd);
ConOutChar(_T('\n'));
}
/* Run the command */
return ExecuteCommand(Cmd);
}
LPTSTR
GetEnvVar(LPCTSTR varName)
{
static LPTSTR ret = NULL;
UINT size;
cmd_free(ret);
ret = NULL;
size = GetEnvironmentVariable(varName, NULL, 0);
if (size > 0)
{
ret = cmd_alloc(size * sizeof(TCHAR));
if (ret != NULL)
GetEnvironmentVariable(varName, ret, size + 1);
}
return ret;
}
LPCTSTR
GetEnvVarOrSpecial(LPCTSTR varName)
{
static TCHAR ret[MAX_PATH];
LPTSTR var = GetEnvVar(varName);
if (var)
return var;
/* The environment variable doesn't exist, look for
* a "special" one only if extensions are enabled. */
if (!bEnableExtensions)
return NULL;
/* %CD% */
if (_tcsicmp(varName, _T("CD")) == 0)
{
GetCurrentDirectory(ARRAYSIZE(ret), ret);
return ret;
}
/* %DATE% */
else if (_tcsicmp(varName, _T("DATE")) == 0)
{
return GetDateString();
}
/* %TIME% */
else if (_tcsicmp(varName, _T("TIME")) == 0)
{
return GetTimeString();
}
/* %RANDOM% */
else if (_tcsicmp(varName, _T("RANDOM")) == 0)
{
/* Get random number */
_itot(rand(), ret, 10);
return ret;
}
/* %CMDCMDLINE% */
else if (_tcsicmp(varName, _T("CMDCMDLINE")) == 0)
{
return GetCommandLine();
}
/* %CMDEXTVERSION% */
else if (_tcsicmp(varName, _T("CMDEXTVERSION")) == 0)
{
/* Set Command Extensions version number to CMDEXTVERSION */
_itot(CMDEXTVERSION, ret, 10);
return ret;
}
/* %ERRORLEVEL% */
else if (_tcsicmp(varName, _T("ERRORLEVEL")) == 0)
{
_itot(nErrorLevel, ret, 10);
return ret;
}
#if (NTDDI_VERSION >= NTDDI_WIN7)
/* Available in Win7+, even if the underlying API is available in Win2003+ */
/* %HIGHESTNUMANODENUMBER% */
else if (_tcsicmp(varName, _T("HIGHESTNUMANODENUMBER")) == 0)
{
ULONG NumaNodeNumber = 0;
GetNumaHighestNodeNumber(&NumaNodeNumber);
_itot(NumaNodeNumber, ret, 10);
return ret;
}
#endif
return NULL;
}
/* Handle the %~var syntax */
static PCTSTR
GetEnhancedVar(
IN OUT PCTSTR* pFormat,
IN BOOL (*GetVar)(TCHAR, PCTSTR*, BOOL*))
{
static const TCHAR ModifierTable[] = _T("dpnxfsatz");
enum {
M_DRIVE = 1, /* D: drive letter */
M_PATH = 2, /* P: path */
M_NAME = 4, /* N: filename */
M_EXT = 8, /* X: extension */
M_FULL = 16, /* F: full path (drive+path+name+ext) */
M_SHORT = 32, /* S: full path (drive+path+name+ext), use short names */
M_ATTR = 64, /* A: attributes */
M_TIME = 128, /* T: modification time */
M_SIZE = 256, /* Z: file size */
} Modifiers = 0;
PCTSTR Format, FormatEnd;
PCTSTR PathVarName = NULL;
PCTSTR Variable;
PCTSTR VarEnd;
BOOL VariableIsParam0;
TCHAR FullPath[MAX_PATH];
TCHAR FixedPath[MAX_PATH];
PTCHAR Filename, Extension;
HANDLE hFind;
WIN32_FIND_DATA w32fd;
PTCHAR In, Out;
static TCHAR Result[CMDLINE_LENGTH];
/* Check whether the current character is a recognized variable.
* If it is not, then restore the previous one: there is indeed
* ambiguity between modifier characters and FOR variables;
* the rule that CMD uses is to pick the longest possible match.
* This case can happen if we have a FOR-variable specification
* of the following form:
*
* %~<modifiers><actual FOR variable character><other characters>
*
* where the FOR variable character is also a similar to a modifier,
* but should not be interpreted as is, and the following other
* characters are not part of the possible modifier characters, and
* are unrelated to the FOR variable (they can be part of a command).
* For example, if there is a %n variable, then out of %~anxnd,
* %~anxn will be substituted rather than just %~an.
*
* In the following examples, all characters 'd','p','n','x' are valid modifiers.
*
* 1. In this example, the FOR variable character is 'x' and the actual
* modifiers are 'dpn'. Parsing will first determine that 'dpnx'
* are modifiers, with the possible (last) valid variable being 'x',
* and will stop at the letter 'g'. Since 'g' is not a valid
* variable, then the actual variable is the lattest one 'x',
* and the modifiers are then actually 'dpn'.
* The FOR-loop will then display the %x variable formatted with 'dpn'
* and will append any other characters following, 'g'.
*
* C:\Temp>for %x in (foo.exe bar.txt) do @echo %~dpnxg
* C:\Temp\foog
* C:\Temp\barg
*
*
* 2. In this second example, the FOR variable character is 'g' and
* the actual modifiers are 'dpnx'. Parsing will determine also that
* the possible (last) valid variable could be 'x', but since it's
* not present in the FOR-variables list, it won't be the case.
* This means that the actual FOR variable character must follow,
* in this case, 'g'.
*
* C:\Temp>for %g in (foo.exe bar.txt) do @echo %~dpnxg
* C:\Temp\foo.exe
* C:\Temp\bar.txt
*/
/* First, go through as many modifier characters as possible */
FormatEnd = Format = *pFormat;
while (*FormatEnd && _tcschr(ModifierTable, _totlower(*FormatEnd)))
++FormatEnd;
if (*FormatEnd == _T('$'))
{
/* $PATH: syntax */
PathVarName = FormatEnd + 1;
FormatEnd = _tcschr(PathVarName, _T(':'));
if (!FormatEnd)
return NULL;
/* Must be immediately followed by the variable */
if (!GetVar(*++FormatEnd, &Variable, &VariableIsParam0))
return NULL;
}
else
{
/* Backtrack if necessary to get a variable name match */
while (!GetVar(*FormatEnd, &Variable, &VariableIsParam0))
{
if (FormatEnd == Format)
return NULL;
--FormatEnd;
}
}
*pFormat = FormatEnd + 1;
/* If the variable is empty, return an empty string */
if (!Variable || !*Variable)
return _T("");
/* Exclude the leading and trailing quotes */
VarEnd = &Variable[_tcslen(Variable)];
if (*Variable == _T('"'))
{
++Variable;
if (VarEnd > Variable && VarEnd[-1] == _T('"'))
--VarEnd;
}
if ((ULONG_PTR)VarEnd - (ULONG_PTR)Variable >= sizeof(Result))
return _T("");
memcpy(Result, Variable, (ULONG_PTR)VarEnd - (ULONG_PTR)Variable);
Result[VarEnd - Variable] = _T('\0');
/* Now determine the actual modifiers */
for (; Format < FormatEnd && *Format != _T('$'); ++Format)
Modifiers |= 1 << (_tcschr(ModifierTable, _totlower(*Format)) - ModifierTable);
if (PathVarName)
{
/* $PATH: syntax - search the directories listed in the
* specified environment variable for the file */
PTSTR PathVar;
((PTSTR)FormatEnd)[-1] = _T('\0'); // FIXME: HACK!
PathVar = GetEnvVar(PathVarName);
((PTSTR)FormatEnd)[-1] = _T(':');
if (!PathVar ||
!SearchPath(PathVar, Result, NULL, ARRAYSIZE(FullPath), FullPath, NULL))
{
return _T("");
}
}
else if (Modifiers == 0)
{
/* For plain %~var with no modifiers, just return the variable without quotes */
return Result;
}
else if (VariableIsParam0)
{
/* Special case: If the variable is %0 and modifier characters are present,
* use the batch file's path (which includes the .bat/.cmd extension)
* rather than the actual %0 variable (which might not). */
ASSERT(bc);
_tcscpy(FullPath, bc->BatchFilePath);
}
else
{
/* Convert the variable, now without quotes, to a full path */
if (!GetFullPathName(Result, ARRAYSIZE(FullPath), FullPath, NULL))
return _T("");
}
/* Next step is to change the path to fix letter case (e.g.
* C:\ReAcToS -> C:\ReactOS) and, if requested with the S modifier,
* replace long filenames with short. */
In = FullPath;
Out = FixedPath;
/* Copy drive letter */
*Out++ = *In++;
*Out++ = *In++;
*Out++ = *In++;
/* Loop over each \-separated component in the path */
do {
TCHAR *Next = _tcschr(In, _T('\\'));
if (Next)
*Next++ = _T('\0');
/* Use FindFirstFile to get the correct name */
if (Out + _tcslen(In) + 1 >= &FixedPath[ARRAYSIZE(FixedPath)])
return _T("");
_tcscpy(Out, In);
hFind = FindFirstFile(FixedPath, &w32fd);
/* If it doesn't exist, just leave the name as it was given */
if (hFind != INVALID_HANDLE_VALUE)
{
PTSTR FixedComponent = w32fd.cFileName;
if ((Modifiers & M_SHORT) && *w32fd.cAlternateFileName)
FixedComponent = w32fd.cAlternateFileName;
FindClose(hFind);
if (Out + _tcslen(FixedComponent) + 1 >= &FixedPath[ARRAYSIZE(FixedPath)])
return _T("");
_tcscpy(Out, FixedComponent);
}
Filename = Out;
Out += _tcslen(Out);
*Out++ = _T('\\');
In = Next;
} while (In != NULL);
Out[-1] = _T('\0');
/* Build the result string. Start with attributes, modification time, and
* file size. If the file didn't exist, these fields will all be empty. */
Out = Result;
if (hFind != INVALID_HANDLE_VALUE)
{
if (Modifiers & M_ATTR)
{
static const struct {
TCHAR Character;
WORD Value;
} *Attrib, Table[] = {
{ _T('d'), FILE_ATTRIBUTE_DIRECTORY },
{ _T('r'), FILE_ATTRIBUTE_READONLY },
{ _T('a'), FILE_ATTRIBUTE_ARCHIVE },
{ _T('h'), FILE_ATTRIBUTE_HIDDEN },
{ _T('s'), FILE_ATTRIBUTE_SYSTEM },
{ _T('c'), FILE_ATTRIBUTE_COMPRESSED },
{ _T('o'), FILE_ATTRIBUTE_OFFLINE },
{ _T('t'), FILE_ATTRIBUTE_TEMPORARY },
{ _T('l'), FILE_ATTRIBUTE_REPARSE_POINT },
#if (NTDDI_VERSION >= NTDDI_WIN8)
{ _T('v'), FILE_ATTRIBUTE_INTEGRITY_STREAM },
{ _T('x'), FILE_ATTRIBUTE_NO_SCRUB_DATA /* 0x20000 */ },
#endif
};
for (Attrib = Table; Attrib != &Table[ARRAYSIZE(Table)]; Attrib++)
{
*Out++ = w32fd.dwFileAttributes & Attrib->Value
? Attrib->Character
: _T('-');
}
*Out++ = _T(' ');
}
if (Modifiers & M_TIME)
{
FILETIME ft;
SYSTEMTIME st;
FileTimeToLocalFileTime(&w32fd.ftLastWriteTime, &ft);
FileTimeToSystemTime(&ft, &st);
Out += FormatDate(Out, &st, TRUE);
*Out++ = _T(' ');
Out += FormatTime(Out, &st);
*Out++ = _T(' ');
}
if (Modifiers & M_SIZE)
{
ULARGE_INTEGER Size;
Size.LowPart = w32fd.nFileSizeLow;
Size.HighPart = w32fd.nFileSizeHigh;
Out += _stprintf(Out, _T("%I64u "), Size.QuadPart);
}
}
/* When using the path-searching syntax or the S modifier,
* at least part of the file path is always included.
* If none of the DPNX modifiers are present, include the full path */
if (PathVarName || (Modifiers & M_SHORT))
if ((Modifiers & (M_DRIVE | M_PATH | M_NAME | M_EXT)) == 0)
Modifiers |= M_FULL;
/* Now add the requested parts of the name.
* With the F modifier, add all parts to form the full path. */
Extension = _tcsrchr(Filename, _T('.'));
if (Modifiers & (M_DRIVE | M_FULL))
{
*Out++ = FixedPath[0];
*Out++ = FixedPath[1];
}
if (Modifiers & (M_PATH | M_FULL))
{
memcpy(Out, &FixedPath[2], (ULONG_PTR)Filename - (ULONG_PTR)&FixedPath[2]);
Out += Filename - &FixedPath[2];
}
if (Modifiers & (M_NAME | M_FULL))
{
while (*Filename && Filename != Extension)
*Out++ = *Filename++;
}
if (Modifiers & (M_EXT | M_FULL))
{
if (Extension)
Out = _stpcpy(Out, Extension);
}
/* Trim trailing space which otherwise would appear as a
* result of using the A/T/Z modifiers but no others. */
while (Out != &Result[0] && Out[-1] == _T(' '))
Out--;
*Out = _T('\0');
return Result;
}
static PCTSTR
GetBatchVar(
IN PCTSTR varName,
OUT PUINT varNameLen)
{
PCTSTR ret;
PCTSTR varNameEnd;
*varNameLen = 1;
switch (*varName)
{
case _T('~'):
{
varNameEnd = varName + 1;
ret = GetEnhancedVar(&varNameEnd, FindArg);
if (!ret)
{
ParseErrorEx(varName);
return NULL;
}
*varNameLen = varNameEnd - varName;
return ret;
}
case _T('0'):
case _T('1'):
case _T('2'):
case _T('3'):
case _T('4'):
case _T('5'):
case _T('6'):
case _T('7'):
case _T('8'):
case _T('9'):
{
BOOL dummy;
if (!FindArg(*varName, &ret, &dummy))
return NULL;
else
return ret;
}
case _T('*'):
/* Copy over the raw params (not including the batch file name) */
return bc->raw_params;
case _T('%'):
return _T("%");
}
return NULL;
}
BOOL
SubstituteVar(
IN PCTSTR Src,
OUT size_t* SrcIncLen, // VarNameLen
OUT PTCHAR Dest,
IN PTCHAR DestEnd,
OUT size_t* DestIncLen,
IN TCHAR Delim)
{
#define APPEND(From, Length) \
do { \
if (Dest + (Length) > DestEnd) \
goto too_long; \
memcpy(Dest, (From), (Length) * sizeof(TCHAR)); \
Dest += (Length); \
} while (0)
#define APPEND1(Char) \
do { \
if (Dest >= DestEnd) \
goto too_long; \
*Dest++ = (Char); \
} while (0)
PCTSTR Var;
PCTSTR Start, End, SubstStart;
TCHAR EndChr;
size_t VarLength;
Start = Src;
End = Dest;
*SrcIncLen = 0;
*DestIncLen = 0;
if (!Delim)
return FALSE;
if (*Src != Delim)
return FALSE;
++Src;
/* If we are already at the end of the string, fail the substitution */
SubstStart = Src;
if (!*Src || *Src == _T('\r') || *Src == _T('\n'))
goto bad_subst;
if (bc && Delim == _T('%'))
{
UINT NameLen;
Var = GetBatchVar(Src, &NameLen);
if (!Var && bParseError)
{
/* Return the partially-parsed command to be
* echoed for error diagnostics purposes. */
APPEND1(Delim);
APPEND(Src, _tcslen(Src) + 1);
return FALSE;
}
if (Var != NULL)
{
VarLength = _tcslen(Var);
APPEND(Var, VarLength);
Src += NameLen;
goto success;
}
}
/* Find the end of the variable name. A colon (:) will usually
* end the name and begin the optional modifier, but not if it
* is immediately followed by the delimiter (%VAR:%). */
SubstStart = Src;
while (*Src && *Src != Delim && !(*Src == _T(':') && Src[1] != Delim))
{
++Src;
}
/* If we are either at the end of the string, or the delimiter
* has been repeated more than once, fail the substitution. */
if (!*Src || Src == SubstStart)
goto bad_subst;
EndChr = *Src;
*(PTSTR)Src = _T('\0'); // FIXME: HACK!
Var = GetEnvVarOrSpecial(SubstStart);
*(PTSTR)Src++ = EndChr;
if (Var == NULL)
{
/* In a batch context, %NONEXISTENT% "expands" to an
* empty string, otherwise fail the substitution. */
if (bc)
goto success;
goto bad_subst;
}
VarLength = _tcslen(Var);
if (EndChr == Delim)
{
/* %VAR% - use as-is */
APPEND(Var, VarLength);
}
else if (*Src == _T('~'))
{
/* %VAR:~[start][,length]% - Substring.
* Negative values are offsets from the end.
*/
SSIZE_T Start = _tcstol(Src + 1, (PTSTR*)&Src, 0);
SSIZE_T End = (SSIZE_T)VarLength;
if (Start < 0)
Start += VarLength;
Start = min(max(Start, 0), VarLength);
if (*Src == _T(','))
{
End = _tcstol(Src + 1, (PTSTR*)&Src, 0);
End += (End < 0) ? VarLength : Start;
End = min(max(End, Start), VarLength);
}
if (*Src++ != Delim)
goto bad_subst;
APPEND(&Var[Start], End - Start);
}
else
{
/* %VAR:old=new% - Replace all occurrences of old with new.
* %VAR:*old=new% - Replace first occurrence only,
* and remove everything before it.
*/
PCTSTR Old, New;
size_t OldLength, NewLength;
BOOL Star = FALSE;
size_t LastMatch = 0, i = 0;
if (*Src == _T('*'))
{
Star = TRUE;
Src++;
}
/* The string to replace may contain the delimiter */
Src = _tcschr(Old = Src, _T('='));
if (Src == NULL)
goto bad_subst;
OldLength = Src++ - Old;
if (OldLength == 0)
goto bad_subst;
Src = _tcschr(New = Src, Delim);
if (Src == NULL)
goto bad_subst;
NewLength = Src++ - New;
while (i < VarLength)
{
if (_tcsnicmp(&Var[i], Old, OldLength) == 0)
{
if (!Star)
APPEND(&Var[LastMatch], i - LastMatch);
APPEND(New, NewLength);
i += OldLength;
LastMatch = i;
if (Star)
break;
continue;
}
i++;
}
APPEND(&Var[LastMatch], VarLength - LastMatch);
}
success:
*SrcIncLen = (Src - Start);
*DestIncLen = (Dest - End);
return TRUE;
bad_subst:
Src = SubstStart;
/* Only if no batch context active do we echo the delimiter */
if (!bc)
APPEND1(Delim);
goto success;
too_long:
ConOutResPrintf(STRING_ALIAS_ERROR);
nErrorLevel = 9023;
return FALSE;
#undef APPEND
#undef APPEND1
}
BOOL
SubstituteVars(
IN PCTSTR Src,
OUT PTSTR Dest,
IN TCHAR Delim)
{
#define APPEND(From, Length) \
do { \
if (Dest + (Length) > DestEnd) \
goto too_long; \
memcpy(Dest, (From), (Length) * sizeof(TCHAR)); \
Dest += (Length); \
} while (0)
#define APPEND1(Char) \
do { \
if (Dest >= DestEnd) \
goto too_long; \
*Dest++ = (Char); \
} while (0)
PTCHAR DestEnd = Dest + CMDLINE_LENGTH - 1;
PCTSTR End;
size_t SrcIncLen, DestIncLen;
while (*Src /* && (Dest < DestEnd) */)
{
if (*Src != Delim)
{
End = _tcschr(Src, Delim);
if (End == NULL)
End = Src + _tcslen(Src);
APPEND(Src, End - Src);
Src = End;
continue;
}
if (!SubstituteVar(Src, &SrcIncLen, Dest, DestEnd, &DestIncLen, Delim))
{
return FALSE;
}
else
{
Src += SrcIncLen;
Dest += DestIncLen;
}
}
APPEND1(_T('\0'));
return TRUE;
too_long:
ConOutResPrintf(STRING_ALIAS_ERROR);
nErrorLevel = 9023;
return FALSE;
#undef APPEND
#undef APPEND1
}
/* Search the list of FOR contexts for a variable */
static BOOL
FindForVar(
IN TCHAR Var,
OUT PCTSTR* VarPtr,
OUT BOOL* IsParam0)
{
PFOR_CONTEXT Ctx;
*VarPtr = NULL;
*IsParam0 = FALSE;
for (Ctx = fc; Ctx != NULL; Ctx = Ctx->prev)
{
if ((UINT)(Var - Ctx->firstvar) < Ctx->varcount)
{
*VarPtr = Ctx->values[Var - Ctx->firstvar];
return TRUE;
}
}
return FALSE;
}
BOOL
SubstituteForVars(
IN PCTSTR Src,
OUT PTSTR Dest)
{
PTCHAR DestEnd = &Dest[CMDLINE_LENGTH - 1];
while (*Src)
{
if (Src[0] == _T('%'))
{
BOOL Dummy;
PCTSTR End = &Src[2];
PCTSTR Value = NULL;
if (Src[1] == _T('~'))
Value = GetEnhancedVar(&End, FindForVar);
if (!Value && Src[1])
{
if (FindForVar(Src[1], &Value, &Dummy) && !Value)
{
/* The variable is empty, return an empty string */
Value = _T("");
}
}
if (Value)
{
if (Dest + _tcslen(Value) > DestEnd)
return FALSE;
Dest = _stpcpy(Dest, Value);
Src = End;
continue;
}
}
/* Not a variable; just copy the character */
if (Dest >= DestEnd)
return FALSE;
*Dest++ = *Src++;
}
*Dest = _T('\0');
return TRUE;
}
PTSTR
DoDelayedExpansion(
IN PCTSTR Line)
{
TCHAR Buf1[CMDLINE_LENGTH];
TCHAR Buf2[CMDLINE_LENGTH];
PTCHAR Src, Dst;
PTCHAR DestEnd = Buf2 + CMDLINE_LENGTH - 1;
size_t SrcIncLen, DestIncLen;
/* First, substitute FOR variables */
if (!SubstituteForVars(Line, Buf1))
return NULL;
if (!bDelayedExpansion || !_tcschr(Buf1, _T('!')))
return cmd_dup(Buf1);
/*
* Delayed substitutions are not actually completely the same as
* immediate substitutions. In particular, it is possible to escape
* the exclamation point using the escape caret.
*/
/*
* Perform delayed expansion: expand variables around '!',
* and reparse escape carets.
*/
#define APPEND1(Char) \
do { \
if (Dst >= DestEnd) \
goto too_long; \
*Dst++ = (Char); \
} while (0)
Src = Buf1;
Dst = Buf2;
while (*Src && (Src < &Buf1[CMDLINE_LENGTH]))
{
if (*Src == _T('^'))
{
++Src;
if (!*Src || !(Src < &Buf1[CMDLINE_LENGTH]))
break;
APPEND1(*Src++);
}
else if (*Src == _T('!'))
{
if (!SubstituteVar(Src, &SrcIncLen, Dst, DestEnd, &DestIncLen, _T('!')))
{
return NULL; // Got an error during parsing.
}
else
{
Src += SrcIncLen;
Dst += DestIncLen;
}
}
else
{
APPEND1(*Src++);
}
continue;
}
APPEND1(_T('\0'));
return cmd_dup(Buf2);
too_long:
ConOutResPrintf(STRING_ALIAS_ERROR);
nErrorLevel = 9023;
return NULL;
#undef APPEND1
}
/*
* Do the prompt/input/process loop.
*/
BOOL
ReadLine(TCHAR *commandline, BOOL bMore)
{
TCHAR readline[CMDLINE_LENGTH];
LPTSTR ip;
/* if no batch input then... */
if (bc == NULL)
{
if (bMore)
{
ConOutResPrintf(STRING_MORE);
}
else
{
/* JPP 19980807 - if echo off, don't print prompt */
if (bEcho)
{
if (!bIgnoreEcho)
ConOutChar(_T('\n'));
PrintPrompt();
}
}
if (!ReadCommand(readline, CMDLINE_LENGTH - 1))
{
bExit = TRUE;
return FALSE;
}
if (readline[0] == _T('\0'))
ConOutChar(_T('\n'));
if (CheckCtrlBreak(BREAK_INPUT))
return FALSE;
if (readline[0] == _T('\0'))
return FALSE;
ip = readline;
}
else
{
ip = ReadBatchLine();
if (!ip)
return FALSE;
}
return SubstituteVars(ip, commandline, _T('%'));
}
static INT
ProcessInput(VOID)
{
INT Ret = 0;
PARSED_COMMAND *Cmd;
while (!bCanExit || !bExit)
{
/* Reset the Ctrl-Break / Ctrl-C state */
bCtrlBreak = FALSE;
Cmd = ParseCommand(NULL);
if (!Cmd)
continue;
Ret = ExecuteCommand(Cmd);
FreeCommand(Cmd);
}
return Ret;
}
/*
* Control-break handler.
*/
static BOOL
WINAPI
BreakHandler(IN DWORD dwCtrlType)
{
DWORD dwWritten;
INPUT_RECORD rec;
if ((dwCtrlType != CTRL_C_EVENT) &&
(dwCtrlType != CTRL_BREAK_EVENT))
{
return FALSE;
}
if (!TryEnterCriticalSection(&ChildProcessRunningLock))
{
/* Child process is running and will have received the control event */
return TRUE;
}
else
{
LeaveCriticalSection(&ChildProcessRunningLock);
}
bCtrlBreak = TRUE;
rec.EventType = KEY_EVENT;
rec.Event.KeyEvent.bKeyDown = TRUE;
rec.Event.KeyEvent.wRepeatCount = 1;
rec.Event.KeyEvent.wVirtualKeyCode = _T('C');
rec.Event.KeyEvent.wVirtualScanCode = _T('C') - 35;
rec.Event.KeyEvent.uChar.AsciiChar = _T('C');
rec.Event.KeyEvent.uChar.UnicodeChar = _T('C');
rec.Event.KeyEvent.dwControlKeyState = RIGHT_CTRL_PRESSED;
WriteConsoleInput(ConStreamGetOSHandle(StdIn),
&rec,
1,
&dwWritten);
/* FIXME: Handle batch files */
// ConOutPrintf(_T("^C"));
return TRUE;
}
VOID AddBreakHandler(VOID)
{
SetConsoleCtrlHandler(BreakHandler, TRUE);
}
VOID RemoveBreakHandler(VOID)
{
SetConsoleCtrlHandler(BreakHandler, FALSE);
}
/*
* Show commands and options that are available.
*/
#if 0
static VOID
ShowCommands(VOID)
{
/* print command list */
ConOutResPuts(STRING_CMD_HELP1);
PrintCommandList();
/* print feature list */
ConOutResPuts(STRING_CMD_HELP2);
#ifdef FEATURE_ALIASES
ConOutResPuts(STRING_CMD_HELP3);
#endif
#ifdef FEATURE_HISTORY
ConOutResPuts(STRING_CMD_HELP4);
#endif
#ifdef FEATURE_UNIX_FILENAME_COMPLETION
ConOutResPuts(STRING_CMD_HELP5);
#endif
#ifdef FEATURE_DIRECTORY_STACK
ConOutResPuts(STRING_CMD_HELP6);
#endif
#ifdef FEATURE_REDIRECTION
ConOutResPuts(STRING_CMD_HELP7);
#endif
ConOutChar(_T('\n'));
}
#endif
static VOID
LoadRegistrySettings(HKEY hKeyRoot)
{
LONG lRet;
HKEY hKey;
DWORD dwType, len;
/*
* Buffer big enough to hold the string L"4294967295",
* corresponding to the literal 0xFFFFFFFF (MAXULONG) in decimal.
*/
DWORD Buffer[6];
lRet = RegOpenKeyEx(hKeyRoot,
_T("Software\\Microsoft\\Command Processor"),
0,
KEY_QUERY_VALUE,
&hKey);
if (lRet != ERROR_SUCCESS)
return;
#ifdef INCLUDE_CMD_COLOR
len = sizeof(Buffer);
lRet = RegQueryValueEx(hKey,
_T("DefaultColor"),
NULL,
&dwType,
(LPBYTE)&Buffer,
&len);
if (lRet == ERROR_SUCCESS)
{
/* Overwrite the default attributes */
if (dwType == REG_DWORD)
wDefColor = (WORD)*(PDWORD)Buffer;
else if (dwType == REG_SZ)
wDefColor = (WORD)_tcstol((PTSTR)Buffer, NULL, 0);
}
// else, use the default attributes retrieved before.
#endif
#if 0
len = sizeof(Buffer);
lRet = RegQueryValueEx(hKey,
_T("DisableUNCCheck"),
NULL,
&dwType,
(LPBYTE)&Buffer,
&len);
if (lRet == ERROR_SUCCESS)
{
/* Overwrite the default setting */
if (dwType == REG_DWORD)
bDisableUNCCheck = !!*(PDWORD)Buffer;
else if (dwType == REG_SZ)
bDisableUNCCheck = (_ttol((PTSTR)Buffer) == 1);
}
// else, use the default setting set globally.
#endif
len = sizeof(Buffer);
lRet = RegQueryValueEx(hKey,
_T("DelayedExpansion"),
NULL,
&dwType,
(LPBYTE)&Buffer,
&len);
if (lRet == ERROR_SUCCESS)
{
/* Overwrite the default setting */
if (dwType == REG_DWORD)
bDelayedExpansion = !!*(PDWORD)Buffer;
else if (dwType == REG_SZ)
bDelayedExpansion = (_ttol((PTSTR)Buffer) == 1);
}
// else, use the default setting set globally.
len = sizeof(Buffer);
lRet = RegQueryValueEx(hKey,
_T("EnableExtensions"),
NULL,
&dwType,
(LPBYTE)&Buffer,
&len);
if (lRet == ERROR_SUCCESS)
{
/* Overwrite the default setting */
if (dwType == REG_DWORD)
bEnableExtensions = !!*(PDWORD)Buffer;
else if (dwType == REG_SZ)
bEnableExtensions = (_ttol((PTSTR)Buffer) == 1);
}
// else, use the default setting set globally.
len = sizeof(Buffer);
lRet = RegQueryValueEx(hKey,
_T("CompletionChar"),
NULL,
&dwType,
(LPBYTE)&Buffer,
&len);
if (lRet == ERROR_SUCCESS)
{
/* Overwrite the default setting */
if (dwType == REG_DWORD)
AutoCompletionChar = (TCHAR)*(PDWORD)Buffer;
else if (dwType == REG_SZ)
AutoCompletionChar = (TCHAR)_tcstol((PTSTR)Buffer, NULL, 0);
}
// else, use the default setting set globally.
/* Validity check */
if (IS_COMPLETION_DISABLED(AutoCompletionChar))
{
/* Disable autocompletion */
AutoCompletionChar = 0x20;
}
len = sizeof(Buffer);
lRet = RegQueryValueEx(hKey,
_T("PathCompletionChar"),
NULL,
&dwType,
(LPBYTE)&Buffer,
&len);
if (lRet == ERROR_SUCCESS)
{
/* Overwrite the default setting */
if (dwType == REG_DWORD)
PathCompletionChar = (TCHAR)*(PDWORD)Buffer;
else if (dwType == REG_SZ)
PathCompletionChar = (TCHAR)_tcstol((PTSTR)Buffer, NULL, 0);
}
// else, use the default setting set globally.
/* Validity check */
if (IS_COMPLETION_DISABLED(PathCompletionChar))
{
/* Disable autocompletion */
PathCompletionChar = 0x20;
}
/* Adjust completion chars */
if (PathCompletionChar >= 0x20 && AutoCompletionChar < 0x20)
PathCompletionChar = AutoCompletionChar;
else if (AutoCompletionChar >= 0x20 && PathCompletionChar < 0x20)
AutoCompletionChar = PathCompletionChar;
RegCloseKey(hKey);
}
static VOID
ExecuteAutoRunFile(HKEY hKeyRoot)
{
LONG lRet;
HKEY hKey;
DWORD dwType, len;
TCHAR AutoRun[2048];
lRet = RegOpenKeyEx(hKeyRoot,
_T("Software\\Microsoft\\Command Processor"),
0,
KEY_QUERY_VALUE,
&hKey);
if (lRet != ERROR_SUCCESS)
return;
len = sizeof(AutoRun);
lRet = RegQueryValueEx(hKey,
_T("AutoRun"),
NULL,
&dwType,
(LPBYTE)&AutoRun,
&len);
if ((lRet == ERROR_SUCCESS) && (dwType == REG_EXPAND_SZ || dwType == REG_SZ))
{
if (*AutoRun)
ParseCommandLine(AutoRun);
}
RegCloseKey(hKey);
}
/* Get the command that comes after a /C or /K switch */
static VOID
GetCmdLineCommand(
OUT LPTSTR commandline,
IN LPCTSTR ptr,
IN BOOL AlwaysStrip)
{
TCHAR* LastQuote;
while (_istspace(*ptr))
++ptr;
/* Remove leading quote, find final quote */
if (*ptr == _T('"') &&
(LastQuote = _tcsrchr(++ptr, _T('"'))) != NULL)
{
const TCHAR* Space;
/* Under certain circumstances, all quotes are preserved.
* CMD /? documents these conditions as follows:
* 1. No /S switch
* 2. Exactly two quotes
* 3. No "special characters" between the quotes
* (CMD /? says &<>()@^| but parentheses did not
* trigger this rule when I tested them.)
* 4. Whitespace exists between the quotes
* 5. Enclosed string is an executable filename
*/
*LastQuote = _T('\0');
for (Space = ptr + 1; Space < LastQuote; ++Space)
{
if (_istspace(*Space)) /* Rule 4 */
{
if (!AlwaysStrip && /* Rule 1 */
!_tcspbrk(ptr, _T("\"&<>@^|")) && /* Rules 2, 3 */
SearchForExecutable(ptr, commandline)) /* Rule 5 */
{
/* All conditions met: preserve both the quotes */
*LastQuote = _T('"');
_tcscpy(commandline, ptr - 1);
return;
}
break;
}
}
/* The conditions were not met: remove both the
* leading quote and the last quote */
_tcscpy(commandline, ptr);
_tcscpy(&commandline[LastQuote - ptr], LastQuote + 1);
return;
}
/* No quotes; just copy */
_tcscpy(commandline, ptr);
}
/*
* Set up global initializations and process parameters.
* Return a pointer to the command line if present.
*/
static LPCTSTR
Initialize(VOID)
{
HMODULE NtDllModule;
HANDLE hIn, hOut;
LPTSTR ptr, cmdLine;
TCHAR option = 0;
BOOL AutoRun = TRUE;
TCHAR ModuleName[MAX_PATH + 1];
/* Get version information */
InitOSVersion();
/* Some people like to run ReactOS cmd.exe on Win98, it helps in the
* build process. So don't link implicitly against ntdll.dll, load it
* dynamically instead */
NtDllModule = GetModuleHandle(TEXT("ntdll.dll"));
if (NtDllModule != NULL)
{
NtQueryInformationProcessPtr = (NtQueryInformationProcessProc)GetProcAddress(NtDllModule, "NtQueryInformationProcess");
NtReadVirtualMemoryPtr = (NtReadVirtualMemoryProc)GetProcAddress(NtDllModule, "NtReadVirtualMemory");
}
/* Load the registry settings */
LoadRegistrySettings(HKEY_LOCAL_MACHINE);
LoadRegistrySettings(HKEY_CURRENT_USER);
/* Initialize our locale */
InitLocale();
/* Initialize prompt support */
InitPrompt();
#ifdef FEATURE_DIRECTORY_STACK
/* Initialize directory stack */
InitDirectoryStack();
#endif
#ifdef FEATURE_HISTORY
/* Initialize history */
InitHistory();
#endif
/* Set COMSPEC environment variable */
if (GetModuleFileName(NULL, ModuleName, ARRAYSIZE(ModuleName)) != 0)
{
ModuleName[MAX_PATH] = _T('\0');
SetEnvironmentVariable (_T("COMSPEC"), ModuleName);
}
/* Add ctrl break handler */
AddBreakHandler();
/* Set the default console mode */
hOut = ConStreamGetOSHandle(StdOut);
hIn = ConStreamGetOSHandle(StdIn);
SetConsoleMode(hOut, 0); // Reinitialize the console output mode
SetConsoleMode(hOut, ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
SetConsoleMode(hIn , ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
cmdLine = GetCommandLine();
TRACE ("[command args: %s]\n", debugstr_aw(cmdLine));
for (ptr = cmdLine; *ptr; ++ptr)
{
if (*ptr == _T('/'))
{
option = _totupper(ptr[1]);
if (option == _T('?'))
{
ConOutResPaging(TRUE, STRING_CMD_HELP8);
nErrorLevel = 1;
bExit = TRUE;
return NULL;
}
else if (option == _T('P'))
{
if (!IsExistingFile(_T("\\autoexec.bat")))
{
#ifdef INCLUDE_CMD_DATE
cmd_date(_T(""));
#endif
#ifdef INCLUDE_CMD_TIME
cmd_time(_T(""));
#endif
}
else
{
ParseCommandLine(_T("\\autoexec.bat"));
}
bCanExit = FALSE;
}
else if (option == _T('A'))
{
OutputStreamMode = AnsiText;
}
else if (option == _T('C') || option == _T('K') || option == _T('R'))
{
/* Remainder of command line is a command to be run */
fSingleCommand = ((option == _T('K')) << 1) | 1;
break;
}
else if (option == _T('D'))
{
AutoRun = FALSE;
}
else if (option == _T('Q'))
{
bDisableBatchEcho = TRUE;
}
else if (option == _T('S'))
{
bAlwaysStrip = TRUE;
}
#ifdef INCLUDE_CMD_COLOR
else if (!_tcsnicmp(ptr, _T("/T:"), 3))
{
/* Process /T (color) argument; overwrite any previous settings */
wDefColor = (WORD)_tcstoul(&ptr[3], &ptr, 16);
}
#endif
else if (option == _T('U'))
{
OutputStreamMode = UTF16Text;
}
else if (option == _T('F'))
{
if (!_tcsnicmp(&ptr[2], _T(":OFF"), 4))
{
/* Disable file and path completion */
AutoCompletionChar = 0x20;
PathCompletionChar = 0x20;
}
else /* Enable completion by default */
{
/* Enable (and replace) file and path completion
* characters with Ctrl-F and Ctrl-D respectively */
AutoCompletionChar = 0x06; // Ctrl-F
PathCompletionChar = 0x04; // Ctrl-D
}
}
else if (option == _T('V'))
{
// FIXME: Check validity of the parameter given to V !
bDelayedExpansion = _tcsnicmp(&ptr[2], _T(":OFF"), 4);
}
else if (option == _T('E'))
{
// FIXME: Check validity of the parameter given to E !
bEnableExtensions = _tcsnicmp(&ptr[2], _T(":OFF"), 4);
}
else if (option == _T('X'))
{
/* '/X' is identical to '/E:ON' */
bEnableExtensions = TRUE;
}
else if (option == _T('Y'))
{
/* '/Y' is identical to '/E:OFF' */
bEnableExtensions = FALSE;
}
}
}
#ifdef INCLUDE_CMD_COLOR
if (wDefColor == 0)
{
/*
* If we still do not have the console colour attribute set,
* retrieve the default one.
*/
ConGetDefaultAttributes(&wDefColor);
}
if (wDefColor != 0)
ConSetScreenColor(ConStreamGetOSHandle(StdOut), wDefColor, TRUE);
#endif
/* Reset the output Standard Streams translation modes and code page caches */
// ConStreamSetMode(StdIn , OutputStreamMode, InputCodePage );
ConStreamSetMode(StdOut, OutputStreamMode, OutputCodePage);
ConStreamSetMode(StdErr, OutputStreamMode, OutputCodePage);
if (!*ptr)
{
/* If neither /C or /K was given, display a simple version string */
/* Insert a new line above the copyright notice if we are drawing the information line. */
if (HasInfoLine())
ConOutChar('\n');
ConOutResPrintf(STRING_REACTOS_VERSION,
_T(KERNEL_VERSION_STR),
_T(KERNEL_VERSION_BUILD_STR));
ConOutResPrintf(STRING_CMD_COPYRIGHT, _T(COPYRIGHT_YEAR));
}
if (AutoRun)
{
ExecuteAutoRunFile(HKEY_LOCAL_MACHINE);
ExecuteAutoRunFile(HKEY_CURRENT_USER);
}
/* Returns the rest of the command line */
return ptr;
}
static VOID Cleanup(VOID)
{
/* Run cmdexit.bat */
if (IsExistingFile(_T("cmdexit.bat")))
{
ConErrResPuts(STRING_CMD_ERROR5);
ParseCommandLine(_T("cmdexit.bat"));
}
else if (IsExistingFile(_T("\\cmdexit.bat")))
{
ConErrResPuts(STRING_CMD_ERROR5);
ParseCommandLine(_T("\\cmdexit.bat"));
}
/* Remove ctrl break handler */
RemoveBreakHandler();
/* Restore the default console mode */
SetConsoleMode(ConStreamGetOSHandle(StdIn),
ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
SetConsoleMode(ConStreamGetOSHandle(StdOut),
ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
#ifdef _DEBUG_MEM
#ifdef FEATURE_DIRECTORY_STACK
/* Destroy directory stack */
DestroyDirectoryStack();
#endif
#ifdef FEATURE_HISTORY
CleanHistory();
#endif
/* Free GetEnvVar's buffer */
GetEnvVar(NULL);
#endif /* _DEBUG_MEM */
DeleteCriticalSection(&ChildProcessRunningLock);
}
/*
* main function
*/
int _tmain(int argc, const TCHAR *argv[])
{
INT nExitCode;
LPCTSTR pCmdLine;
TCHAR startPath[MAX_PATH];
InitializeCriticalSection(&ChildProcessRunningLock);
lpOriginalEnvironment = DuplicateEnvironment();
GetCurrentDirectory(ARRAYSIZE(startPath), startPath);
_tchdir(startPath);
SetFileApisToOEM();
InputCodePage = GetConsoleCP();
OutputCodePage = GetConsoleOutputCP();
/* Initialize the Console Standard Streams */
ConStreamInit(StdIn , GetStdHandle(STD_INPUT_HANDLE) , /*OutputStreamMode*/ AnsiText, InputCodePage);
ConStreamInit(StdOut, GetStdHandle(STD_OUTPUT_HANDLE), OutputStreamMode, OutputCodePage);
ConStreamInit(StdErr, GetStdHandle(STD_ERROR_HANDLE) , OutputStreamMode, OutputCodePage);
/* Reset the current thread UI language */
if (IsConsoleHandle(ConStreamGetOSHandle(StdOut)) ||
IsConsoleHandle(ConStreamGetOSHandle(StdErr)))
{
ConSetThreadUILanguage(0);
}
CMD_ModuleHandle = GetModuleHandle(NULL);
/*
* Perform general initialization, parse switches on command-line.
* Initialize the exit code with the errorlevel as Initialize() can set it.
*/
pCmdLine = Initialize();
nExitCode = nErrorLevel;
if (pCmdLine && *pCmdLine)
{
TCHAR commandline[CMDLINE_LENGTH];
/* Do the /C or /K command */
GetCmdLineCommand(commandline, &pCmdLine[2], bAlwaysStrip);
nExitCode = ParseCommandLine(commandline);
if (fSingleCommand == 1)
{
// nErrorLevel = nExitCode;
bExit = TRUE;
}
fSingleCommand = 0;
}
if (!bExit)
{
/* Call prompt routine */
nExitCode = ProcessInput();
}
/* Do the cleanup */
Cleanup();
cmd_free(lpOriginalEnvironment);
cmd_exit(nExitCode);
return nExitCode;
}
/* EOF */