mirror of
https://github.com/reactos/wine.git
synced 2024-12-02 00:36:43 +00:00
456 lines
12 KiB
C
456 lines
12 KiB
C
/*
|
|
* Process environment management
|
|
*
|
|
* Copyright 1996, 1998 Alexandre Julliard
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "winuser.h"
|
|
#include "wine/winestring.h"
|
|
#include "process.h"
|
|
#include "heap.h"
|
|
#include "selectors.h"
|
|
#include "winerror.h"
|
|
|
|
/* Format of an environment block:
|
|
* ASCIIZ string 1 (xx=yy format)
|
|
* ...
|
|
* ASCIIZ string n
|
|
* BYTE 0
|
|
* WORD 1
|
|
* ASCIIZ program name (e.g. C:\WINDOWS\SYSTEM\KRNL386.EXE)
|
|
*
|
|
* Notes:
|
|
* - contrary to Microsoft docs, the environment strings do not appear
|
|
* to be sorted on Win95 (although they are on NT); so we don't bother
|
|
* to sort them either.
|
|
*/
|
|
|
|
static const char ENV_program_name[] = "C:\\WINDOWS\\SYSTEM\\KRNL386.EXE";
|
|
|
|
/* Maximum length of a Win16 environment string (including NULL) */
|
|
#define MAX_WIN16_LEN 128
|
|
|
|
/* Extra bytes to reserve at the end of an environment */
|
|
#define EXTRA_ENV_SIZE (sizeof(BYTE) + sizeof(WORD) + sizeof(ENV_program_name))
|
|
|
|
/* Fill the extra bytes with the program name and stuff */
|
|
#define FILL_EXTRA_ENV(p) \
|
|
*(p) = '\0'; \
|
|
PUT_WORD( (p) + 1, 1 ); \
|
|
strcpy( (p) + 3, ENV_program_name );
|
|
|
|
|
|
/***********************************************************************
|
|
* ENV_FindVariable
|
|
*
|
|
* Find a variable in the environment and return a pointer to the value.
|
|
* Helper function for GetEnvironmentVariable and ExpandEnvironmentStrings.
|
|
*/
|
|
static LPCSTR ENV_FindVariable( LPCSTR env, LPCSTR name, INT len )
|
|
{
|
|
while (*env)
|
|
{
|
|
if (!lstrncmpiA( name, env, len ) && (env[len] == '='))
|
|
return env + len + 1;
|
|
env += strlen(env) + 1;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ENV_BuildEnvironment
|
|
*
|
|
* Build the environment for the initial process
|
|
*/
|
|
static BOOL ENV_BuildEnvironment( PDB *pdb )
|
|
{
|
|
extern char **environ;
|
|
LPSTR p, *e;
|
|
int size;
|
|
|
|
/* Compute the total size of the Unix environment */
|
|
|
|
size = EXTRA_ENV_SIZE;
|
|
for (e = environ; *e; e++) size += strlen(*e) + 1;
|
|
|
|
/* Now allocate the environment */
|
|
|
|
if (!(p = HeapAlloc( SystemHeap, 0, size ))) return FALSE;
|
|
pdb->env_db->environ = p;
|
|
|
|
/* And fill it with the Unix environment */
|
|
|
|
for (e = environ; *e; e++)
|
|
{
|
|
strcpy( p, *e );
|
|
p += strlen(p) + 1;
|
|
}
|
|
|
|
/* Now add the program name */
|
|
|
|
FILL_EXTRA_ENV( p );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ENV_InheritEnvironment
|
|
*
|
|
* Make a process inherit the environment from its parent or from an
|
|
* explicit environment.
|
|
*/
|
|
BOOL ENV_InheritEnvironment( PDB *pdb, LPCSTR env )
|
|
{
|
|
DWORD size;
|
|
LPCSTR src;
|
|
LPSTR dst;
|
|
|
|
/* FIXME: should lock the parent environment */
|
|
if (!env)
|
|
{
|
|
if (!pdb->parent) /* initial process */
|
|
return ENV_BuildEnvironment( pdb );
|
|
env = pdb->parent->env_db->environ;
|
|
}
|
|
|
|
/* Compute the environment size */
|
|
|
|
src = env;
|
|
size = EXTRA_ENV_SIZE;
|
|
while (*src)
|
|
{
|
|
int len = strlen(src) + 1;
|
|
src += len;
|
|
if ((len > MAX_WIN16_LEN) && (pdb->flags & PDB32_WIN16_PROC))
|
|
len = MAX_WIN16_LEN;
|
|
size += len;
|
|
}
|
|
|
|
/* Copy the environment */
|
|
|
|
if (!(pdb->env_db->environ = HeapAlloc( pdb->heap, 0, size )))
|
|
return FALSE;
|
|
pdb->env_db->env_sel = SELECTOR_AllocBlock( pdb->env_db->environ,
|
|
0x10000, SEGMENT_DATA,
|
|
FALSE, FALSE );
|
|
src = env;
|
|
dst = pdb->env_db->environ;
|
|
while (*src)
|
|
{
|
|
if (pdb->flags & PDB32_WIN16_PROC)
|
|
lstrcpynA( dst, src, MAX_WIN16_LEN );
|
|
else
|
|
strcpy( dst, src );
|
|
src += strlen(src) + 1;
|
|
dst += strlen(dst) + 1;
|
|
}
|
|
FILL_EXTRA_ENV( dst );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ENV_FreeEnvironment
|
|
*
|
|
* Free a process environment.
|
|
*/
|
|
void ENV_FreeEnvironment( PDB *pdb )
|
|
{
|
|
if (!pdb->env_db) return;
|
|
if (pdb->env_db->env_sel) SELECTOR_FreeBlock( pdb->env_db->env_sel, 1 );
|
|
DeleteCriticalSection( &pdb->env_db->section );
|
|
HeapFree( pdb->heap, 0, pdb->env_db );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetCommandLine32A (KERNEL32.289)
|
|
*/
|
|
LPCSTR WINAPI GetCommandLineA(void)
|
|
{
|
|
return PROCESS_Current()->env_db->cmd_line;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetCommandLine32W (KERNEL32.290)
|
|
*/
|
|
LPCWSTR WINAPI GetCommandLineW(void)
|
|
{
|
|
PDB *pdb = PROCESS_Current();
|
|
EnterCriticalSection( &pdb->env_db->section );
|
|
if (!pdb->env_db->cmd_lineW)
|
|
pdb->env_db->cmd_lineW = HEAP_strdupAtoW( pdb->heap, 0,
|
|
pdb->env_db->cmd_line );
|
|
LeaveCriticalSection( &pdb->env_db->section );
|
|
return pdb->env_db->cmd_lineW;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetEnvironmentStrings32A (KERNEL32.319) (KERNEL32.320)
|
|
*/
|
|
LPSTR WINAPI GetEnvironmentStringsA(void)
|
|
{
|
|
PDB *pdb = PROCESS_Current();
|
|
return pdb->env_db->environ;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetEnvironmentStrings32W (KERNEL32.321)
|
|
*/
|
|
LPWSTR WINAPI GetEnvironmentStringsW(void)
|
|
{
|
|
INT size;
|
|
LPWSTR ret;
|
|
PDB *pdb = PROCESS_Current();
|
|
|
|
EnterCriticalSection( &pdb->env_db->section );
|
|
size = HeapSize( pdb->heap, 0, pdb->env_db->environ );
|
|
if ((ret = HeapAlloc( pdb->heap, 0, size * sizeof(WCHAR) )) != NULL)
|
|
{
|
|
LPSTR pA = pdb->env_db->environ;
|
|
LPWSTR pW = ret;
|
|
while (size--) *pW++ = (WCHAR)(BYTE)*pA++;
|
|
}
|
|
LeaveCriticalSection( &pdb->env_db->section );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FreeEnvironmentStrings32A (KERNEL32.268)
|
|
*/
|
|
BOOL WINAPI FreeEnvironmentStringsA( LPSTR ptr )
|
|
{
|
|
PDB *pdb = PROCESS_Current();
|
|
if (ptr != pdb->env_db->environ)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FreeEnvironmentStrings32W (KERNEL32.269)
|
|
*/
|
|
BOOL WINAPI FreeEnvironmentStringsW( LPWSTR ptr )
|
|
{
|
|
return HeapFree( GetProcessHeap(), 0, ptr );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetEnvironmentVariable32A (KERNEL32.322)
|
|
*/
|
|
DWORD WINAPI GetEnvironmentVariableA( LPCSTR name, LPSTR value, DWORD size )
|
|
{
|
|
LPCSTR p;
|
|
INT ret = 0;
|
|
PDB *pdb = PROCESS_Current();
|
|
|
|
if (!name || !*name)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
EnterCriticalSection( &pdb->env_db->section );
|
|
if ((p = ENV_FindVariable( pdb->env_db->environ, name, strlen(name) )))
|
|
{
|
|
ret = strlen(p);
|
|
if (size <= ret)
|
|
{
|
|
/* If not enough room, include the terminating null
|
|
* in the returned size and return an empty string */
|
|
ret++;
|
|
if (value) *value = '\0';
|
|
}
|
|
else if (value) strcpy( value, p );
|
|
}
|
|
LeaveCriticalSection( &pdb->env_db->section );
|
|
return ret; /* FIXME: SetLastError */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetEnvironmentVariable32W (KERNEL32.323)
|
|
*/
|
|
DWORD WINAPI GetEnvironmentVariableW( LPCWSTR nameW, LPWSTR valW, DWORD size)
|
|
{
|
|
LPSTR name = HEAP_strdupWtoA( GetProcessHeap(), 0, nameW );
|
|
LPSTR val = valW ? HeapAlloc( GetProcessHeap(), 0, size ) : NULL;
|
|
DWORD res = GetEnvironmentVariableA( name, val, size );
|
|
HeapFree( GetProcessHeap(), 0, name );
|
|
if (val)
|
|
{
|
|
lstrcpynAtoW( valW, val, size );
|
|
HeapFree( GetProcessHeap(), 0, val );
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetEnvironmentVariable32A (KERNEL32.641)
|
|
*/
|
|
BOOL WINAPI SetEnvironmentVariableA( LPCSTR name, LPCSTR value )
|
|
{
|
|
INT old_size, len, res;
|
|
LPSTR p, env, new_env;
|
|
BOOL ret = FALSE;
|
|
PDB *pdb = PROCESS_Current();
|
|
|
|
EnterCriticalSection( &pdb->env_db->section );
|
|
env = p = pdb->env_db->environ;
|
|
|
|
/* Find a place to insert the string */
|
|
|
|
res = -1;
|
|
len = strlen(name);
|
|
while (*p)
|
|
{
|
|
if (!lstrncmpiA( name, p, len ) && (p[len] == '=')) break;
|
|
p += strlen(p) + 1;
|
|
}
|
|
if (!value && !*p) goto done; /* Value to remove doesn't exist */
|
|
|
|
/* Realloc the buffer */
|
|
|
|
len = value ? strlen(name) + strlen(value) + 2 : 0;
|
|
if (*p) len -= strlen(p) + 1; /* The name already exists */
|
|
old_size = HeapSize( pdb->heap, 0, env );
|
|
if (len < 0)
|
|
{
|
|
LPSTR next = p + strlen(p) + 1; /* We know there is a next one */
|
|
memmove( next + len, next, old_size - (next - env) );
|
|
}
|
|
if (!(new_env = HeapReAlloc( pdb->heap, 0, env, old_size + len )))
|
|
goto done;
|
|
if (pdb->env_db->env_sel)
|
|
SELECTOR_MoveBlock( pdb->env_db->env_sel, new_env );
|
|
p = new_env + (p - env);
|
|
if (len > 0) memmove( p + len, p, old_size - (p - new_env) );
|
|
|
|
/* Set the new string */
|
|
|
|
if (value)
|
|
{
|
|
strcpy( p, name );
|
|
strcat( p, "=" );
|
|
strcat( p, value );
|
|
}
|
|
pdb->env_db->environ = new_env;
|
|
ret = TRUE;
|
|
|
|
done:
|
|
LeaveCriticalSection( &pdb->env_db->section );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetEnvironmentVariable32W (KERNEL32.642)
|
|
*/
|
|
BOOL WINAPI SetEnvironmentVariableW( LPCWSTR name, LPCWSTR value )
|
|
{
|
|
LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
|
|
LPSTR valueA = HEAP_strdupWtoA( GetProcessHeap(), 0, value );
|
|
BOOL ret = SetEnvironmentVariableA( nameA, valueA );
|
|
HeapFree( GetProcessHeap(), 0, nameA );
|
|
HeapFree( GetProcessHeap(), 0, valueA );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExpandEnvironmentStrings32A (KERNEL32.216)
|
|
*
|
|
* Note: overlapping buffers are not supported; this is how it should be.
|
|
*/
|
|
DWORD WINAPI ExpandEnvironmentStringsA( LPCSTR src, LPSTR dst, DWORD count )
|
|
{
|
|
DWORD len, total_size = 1; /* 1 for terminating '\0' */
|
|
LPCSTR p, var;
|
|
PDB *pdb = PROCESS_Current();
|
|
|
|
if (!count) dst = NULL;
|
|
EnterCriticalSection( &pdb->env_db->section );
|
|
|
|
while (*src)
|
|
{
|
|
if (*src != '%')
|
|
{
|
|
if ((p = strchr( src, '%' ))) len = p - src;
|
|
else len = strlen(src);
|
|
var = src;
|
|
src += len;
|
|
}
|
|
else /* we are at the start of a variable */
|
|
{
|
|
if ((p = strchr( src + 1, '%' )))
|
|
{
|
|
len = p - src - 1; /* Length of the variable name */
|
|
if ((var = ENV_FindVariable( pdb->env_db->environ,
|
|
src + 1, len )))
|
|
{
|
|
src += len + 2; /* Skip the variable name */
|
|
len = strlen(var);
|
|
}
|
|
else
|
|
{
|
|
var = src; /* Copy original name instead */
|
|
len += 2;
|
|
src += len;
|
|
}
|
|
}
|
|
else /* unfinished variable name, ignore it */
|
|
{
|
|
var = src;
|
|
len = strlen(src); /* Copy whole string */
|
|
src += len;
|
|
}
|
|
}
|
|
total_size += len;
|
|
if (dst)
|
|
{
|
|
if (count < len) len = count;
|
|
memcpy( dst, var, len );
|
|
dst += len;
|
|
count -= len;
|
|
}
|
|
}
|
|
LeaveCriticalSection( &pdb->env_db->section );
|
|
|
|
/* Null-terminate the string */
|
|
if (dst)
|
|
{
|
|
if (!count) dst--;
|
|
*dst = '\0';
|
|
}
|
|
return total_size;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExpandEnvironmentStrings32W (KERNEL32.217)
|
|
*/
|
|
DWORD WINAPI ExpandEnvironmentStringsW( LPCWSTR src, LPWSTR dst, DWORD len )
|
|
{
|
|
LPSTR srcA = HEAP_strdupWtoA( GetProcessHeap(), 0, src );
|
|
LPSTR dstA = dst ? HeapAlloc( GetProcessHeap(), 0, len ) : NULL;
|
|
DWORD ret = ExpandEnvironmentStringsA( srcA, dstA, len );
|
|
if (dstA)
|
|
{
|
|
lstrcpyAtoW( dst, dstA );
|
|
HeapFree( GetProcessHeap(), 0, dstA );
|
|
}
|
|
HeapFree( GetProcessHeap(), 0, srcA );
|
|
return ret;
|
|
}
|
|
|