2 * Process environment management
4 * Copyright 1996, 1998 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
30 #include "wine/winbase16.h"
31 #include "wine/server.h"
32 #include "wine/library.h"
35 #include "selectors.h"
37 /* Win32 process environment database */
40 LPSTR env; /* 00 Process environment strings */
41 DWORD unknown1; /* 04 Unknown */
42 LPSTR cmd_line; /* 08 Command line */
43 LPSTR cur_dir; /* 0c Current directory */
44 STARTUPINFOA *startup_info; /* 10 Startup information */
45 HANDLE hStdin; /* 14 Handle for standard input */
46 HANDLE hStdout; /* 18 Handle for standard output */
47 HANDLE hStderr; /* 1c Handle for standard error */
48 DWORD unknown2; /* 20 Unknown */
49 DWORD inherit_console; /* 24 Inherit console flag */
50 DWORD break_type; /* 28 Console events flag */
51 void *break_sem; /* 2c SetConsoleCtrlHandler semaphore */
52 void *break_event; /* 30 SetConsoleCtrlHandler event */
53 void *break_thread; /* 34 SetConsoleCtrlHandler thread */
54 void *break_handlers; /* 38 List of console handlers */
58 /* Format of an environment block:
59 * ASCIIZ string 1 (xx=yy format)
64 * ASCIIZ program name (e.g. C:\WINDOWS\SYSTEM\KRNL386.EXE)
67 * - contrary to Microsoft docs, the environment strings do not appear
68 * to be sorted on Win95 (although they are on NT); so we don't bother
69 * to sort them either.
72 static const char ENV_program_name[] = "C:\\WINDOWS\\SYSTEM\\KRNL386.EXE";
74 /* Maximum length of a Win16 environment string (including NULL) */
75 #define MAX_WIN16_LEN 128
77 STARTUPINFOA current_startupinfo =
79 sizeof(STARTUPINFOA), /* cb */
87 0, /* dwXCountChars */
88 0, /* dwYCountChars */
89 0, /* dwFillAttribute */
105 ¤t_startupinfo, /* startup_info */
110 0, /* inherit_console */
114 0, /* break_thread */
115 0 /* break_handlers */
119 static WCHAR *cmdlineW; /* Unicode command line */
120 static WORD env_sel; /* selector to the environment */
122 /***********************************************************************
125 * Find a variable in the environment and return a pointer to the value.
126 * Helper function for GetEnvironmentVariable and ExpandEnvironmentStrings.
128 static LPCSTR ENV_FindVariable( LPCSTR env, LPCSTR name, INT len )
132 if (!strncasecmp( name, env, len ) && (env[len] == '='))
133 return env + len + 1;
134 env += strlen(env) + 1;
140 /***********************************************************************
143 * Build the environment for the initial process
145 static BOOL build_environment(void)
147 extern char **environ;
148 static const WORD one = 1;
152 /* Compute the total size of the Unix environment */
154 size = sizeof(BYTE) + sizeof(WORD) + sizeof(ENV_program_name);
155 for (e = environ; *e; e++)
157 if (!memcmp( *e, "PATH=", 5 )) continue;
158 size += strlen(*e) + 1;
161 /* Now allocate the environment */
163 if (!(p = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
164 current_envdb.env = p;
165 env_sel = SELECTOR_AllocBlock( p, 0x10000, WINE_LDT_FLAGS_DATA );
167 /* And fill it with the Unix environment */
169 for (e = environ; *e; e++)
171 /* skip Unix PATH and store WINEPATH as PATH */
172 if (!memcmp( *e, "PATH=", 5 )) continue;
173 if (!memcmp( *e, "WINEPATH=", 9 )) strcpy( p, *e + 4 );
174 else strcpy( p, *e );
178 /* Now add the program name */
181 memcpy( p, &one, sizeof(WORD) );
182 strcpy( p + sizeof(WORD), ENV_program_name );
187 /***********************************************************************
190 * Small helper for ENV_InitStartupInfo.
192 inline static char *copy_str( char **dst, const char **src, size_t len )
196 if (!len) return NULL;
198 memcpy( ret, *src, len );
206 /***********************************************************************
207 * ENV_InitStartupInfo
209 * Fill the startup info structure from the server.
211 ENVDB *ENV_InitStartupInfo( size_t info_size, char *main_exe_name, size_t main_exe_size )
219 if (!build_environment()) return NULL;
220 if (!info_size) return ¤t_envdb; /* nothing to retrieve */
222 if (!(data = HeapAlloc( GetProcessHeap(), 0, info_size ))) return NULL;
224 SERVER_START_REQ( get_startup_info )
226 wine_server_set_reply( req, data, info_size );
227 wine_server_call( req );
228 info_size = wine_server_reply_size( reply );
231 if (info_size < sizeof(info.size)) goto done;
232 len = min( info_size, ((startup_info_t *)data)->size );
233 memset( &info, 0, sizeof(info) );
234 memcpy( &info, data, len );
235 src = (char *)data + len;
238 /* fixup the lengths */
239 if (info.filename_len > info_size) info.filename_len = info_size;
240 info_size -= info.filename_len;
241 if (info.cmdline_len > info_size) info.cmdline_len = info_size;
242 info_size -= info.cmdline_len;
243 if (info.desktop_len > info_size) info.desktop_len = info_size;
244 info_size -= info.desktop_len;
245 if (info.title_len > info_size) info.title_len = info_size;
247 /* store the filename */
248 if (info.filename_len)
250 len = min( info.filename_len, main_exe_size-1 );
251 memcpy( main_exe_name, src, len );
252 main_exe_name[len] = 0;
253 src += info.filename_len;
256 /* copy the other strings */
257 len = info.cmdline_len + info.desktop_len + info.title_len;
258 if (len && (dst = HeapAlloc( GetProcessHeap(), 0, len + 3 )))
260 current_envdb.cmd_line = copy_str( &dst, &src, info.cmdline_len );
261 current_startupinfo.lpDesktop = copy_str( &dst, &src, info.desktop_len );
262 current_startupinfo.lpTitle = copy_str( &dst, &src, info.title_len );
265 current_startupinfo.dwX = info.x;
266 current_startupinfo.dwY = info.y;
267 current_startupinfo.dwXSize = info.cx;
268 current_startupinfo.dwYSize = info.cy;
269 current_startupinfo.dwXCountChars = info.x_chars;
270 current_startupinfo.dwYCountChars = info.y_chars;
271 current_startupinfo.dwFillAttribute = info.attribute;
272 current_startupinfo.wShowWindow = info.cmd_show;
273 current_startupinfo.dwFlags = info.flags;
275 HeapFree( GetProcessHeap(), 0, data );
276 return ¤t_envdb;
281 /***********************************************************************
284 * Set the Wine library argc/argv global variables.
286 static void set_library_argv( char **argv )
293 for (argc = 0; argv[argc]; argc++)
294 total += MultiByteToWideChar( CP_ACP, 0, argv[argc], -1, NULL, 0 );
296 wargv = HeapAlloc( GetProcessHeap(), 0,
297 total * sizeof(WCHAR) + (argc + 1) * sizeof(*wargv) );
298 p = (WCHAR *)(wargv + argc + 1);
299 for (argc = 0; argv[argc]; argc++)
301 DWORD len = MultiByteToWideChar( CP_ACP, 0, argv[argc], -1, p, total );
308 __wine_main_argc = argc;
309 __wine_main_argv = argv;
310 __wine_main_wargv = wargv;
314 /***********************************************************************
315 * ENV_BuildCommandLine
317 * Build the command line of a process from the argv array.
319 * Note that it does NOT necessarily include the file name.
320 * Sometimes we don't even have any command line options at all.
322 * We must quote and escape characters so that the argv array can be rebuilt
323 * from the command line:
324 * - spaces and tabs must be quoted
326 * - quotes must be escaped
328 * - if '\'s are followed by a '"', they must be doubled and followed by '\"',
329 * resulting in an odd number of '\' followed by a '"'
332 * - '\'s that are not followed by a '"' can be left as is
336 BOOL ENV_BuildCommandLine( char **argv )
341 set_library_argv( argv );
343 if (current_envdb.cmd_line) goto done; /* already got it from the server */
346 for (arg = argv; *arg; arg++)
348 int has_space,bcount;
358 if (*a==' ' || *a=='\t') {
360 } else if (*a=='"') {
361 /* doubling of '\' preceeding a '"',
362 * plus escaping of said '"'
370 len+=(a-*arg)+1 /* for the separating space */;
372 len+=2; /* for the quotes */
375 if (!(current_envdb.cmd_line = HeapAlloc( GetProcessHeap(), 0, len )))
378 p = current_envdb.cmd_line;
379 for (arg = argv; *arg; arg++)
381 int has_space,has_quote;
384 /* Check for quotes and spaces in this argument */
385 has_space=has_quote=0;
388 if (*a==' ' || *a=='\t') {
392 } else if (*a=='"') {
400 /* Now transfer it to the command line */
417 /* Double all the '\\' preceeding this '"', plus one */
418 for (i=0;i<=bcount;i++)
436 if (p > current_envdb.cmd_line)
437 p--; /* remove last space */
440 /* now allocate the Unicode version */
442 len = MultiByteToWideChar( CP_ACP, 0, current_envdb.cmd_line, -1, NULL, 0 );
443 if (!(cmdlineW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) )))
445 MultiByteToWideChar( CP_ACP, 0, current_envdb.cmd_line, -1, cmdlineW, len );
450 /***********************************************************************
451 * GetCommandLineA (KERNEL32.@)
453 * WARNING: there's a Windows incompatibility lurking here !
454 * Win32s always includes the full path of the program file,
455 * whereas Windows NT only returns the full file path plus arguments
456 * in case the program has been started with a full path.
457 * Win9x seems to have inherited NT behaviour.
459 * Note that both Start Menu Execute and Explorer start programs with
460 * fully specified quoted app file paths, which is why probably the only case
461 * where you'll see single file names is in case of direct launch
462 * via CreateProcess or WinExec.
464 * Perhaps we should take care of Win3.1 programs here (Win32s "feature").
466 * References: MS KB article q102762.txt (special Win32s handling)
468 LPSTR WINAPI GetCommandLineA(void)
470 return current_envdb.cmd_line;
473 /***********************************************************************
474 * GetCommandLineW (KERNEL32.@)
476 LPWSTR WINAPI GetCommandLineW(void)
482 /***********************************************************************
483 * GetEnvironmentStrings (KERNEL32.@)
484 * GetEnvironmentStringsA (KERNEL32.@)
486 LPSTR WINAPI GetEnvironmentStringsA(void)
488 return current_envdb.env;
492 /***********************************************************************
493 * GetEnvironmentStringsW (KERNEL32.@)
495 LPWSTR WINAPI GetEnvironmentStringsW(void)
501 size = HeapSize( GetProcessHeap(), 0, current_envdb.env );
502 if ((ret = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) )) != NULL)
504 LPSTR pA = current_envdb.env;
506 while (size--) *pW++ = (WCHAR)(BYTE)*pA++;
513 /***********************************************************************
514 * FreeEnvironmentStringsA (KERNEL32.@)
516 BOOL WINAPI FreeEnvironmentStringsA( LPSTR ptr )
518 if (ptr != current_envdb.env)
520 SetLastError( ERROR_INVALID_PARAMETER );
527 /***********************************************************************
528 * FreeEnvironmentStringsW (KERNEL32.@)
530 BOOL WINAPI FreeEnvironmentStringsW( LPWSTR ptr )
532 return HeapFree( GetProcessHeap(), 0, ptr );
536 /***********************************************************************
537 * GetEnvironmentVariableA (KERNEL32.@)
539 DWORD WINAPI GetEnvironmentVariableA( LPCSTR name, LPSTR value, DWORD size )
546 SetLastError( ERROR_ENVVAR_NOT_FOUND );
551 if ((p = ENV_FindVariable( current_envdb.env, name, strlen(name) )))
556 /* If not enough room, include the terminating null
557 * in the returned size */
560 else if (value) strcpy( value, p );
564 SetLastError( ERROR_ENVVAR_NOT_FOUND );
569 /***********************************************************************
570 * GetEnvironmentVariableW (KERNEL32.@)
572 DWORD WINAPI GetEnvironmentVariableW( LPCWSTR nameW, LPWSTR valW, DWORD size)
577 if (!nameW || !*nameW)
579 SetLastError( ERROR_ENVVAR_NOT_FOUND );
583 name = HEAP_strdupWtoA( GetProcessHeap(), 0, nameW );
584 val = valW ? HeapAlloc( GetProcessHeap(), 0, size ) : NULL;
585 ret = GetEnvironmentVariableA( name, val, size );
588 if (size && !MultiByteToWideChar( CP_ACP, 0, val, -1, valW, size ))
591 HeapFree( GetProcessHeap(), 0, name );
592 if (val) HeapFree( GetProcessHeap(), 0, val );
597 /***********************************************************************
598 * SetEnvironmentVariableA (KERNEL32.@)
600 BOOL WINAPI SetEnvironmentVariableA( LPCSTR name, LPCSTR value )
602 INT old_size, len, res;
603 LPSTR p, env, new_env;
608 SetLastError( ERROR_INVALID_PARAMETER );
613 env = p = current_envdb.env;
615 /* Find a place to insert the string */
621 if (!strncasecmp( name, p, len ) && (p[len] == '=')) break;
624 if (!value && !*p) goto done; /* Value to remove doesn't exist */
626 /* Realloc the buffer */
628 len = value ? strlen(name) + strlen(value) + 2 : 0;
629 if (*p) len -= strlen(p) + 1; /* The name already exists */
630 old_size = HeapSize( GetProcessHeap(), 0, env );
633 LPSTR next = p + strlen(p) + 1; /* We know there is a next one */
634 memmove( next + len, next, old_size - (next - env) );
636 if (!(new_env = HeapReAlloc( GetProcessHeap(), 0, env, old_size + len )))
638 if (env_sel) env_sel = SELECTOR_ReallocBlock( env_sel, new_env, old_size + len );
639 p = new_env + (p - env);
640 if (len > 0) memmove( p + len, p, old_size - (p - new_env) );
642 /* Set the new string */
650 current_envdb.env = new_env;
659 /***********************************************************************
660 * SetEnvironmentVariableW (KERNEL32.@)
662 BOOL WINAPI SetEnvironmentVariableW( LPCWSTR name, LPCWSTR value )
664 LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
665 LPSTR valueA = HEAP_strdupWtoA( GetProcessHeap(), 0, value );
666 BOOL ret = SetEnvironmentVariableA( nameA, valueA );
667 HeapFree( GetProcessHeap(), 0, nameA );
668 HeapFree( GetProcessHeap(), 0, valueA );
673 /***********************************************************************
674 * ExpandEnvironmentStringsA (KERNEL32.@)
676 * Note: overlapping buffers are not supported; this is how it should be.
678 DWORD WINAPI ExpandEnvironmentStringsA( LPCSTR src, LPSTR dst, DWORD count )
680 DWORD len, total_size = 1; /* 1 for terminating '\0' */
683 if (!count) dst = NULL;
690 if ((p = strchr( src, '%' ))) len = p - src;
691 else len = strlen(src);
695 else /* we are at the start of a variable */
697 if ((p = strchr( src + 1, '%' )))
699 len = p - src - 1; /* Length of the variable name */
700 if ((var = ENV_FindVariable( current_envdb.env, src + 1, len )))
702 src += len + 2; /* Skip the variable name */
707 var = src; /* Copy original name instead */
712 else /* unfinished variable name, ignore it */
715 len = strlen(src); /* Copy whole string */
722 if (count < len) len = count;
723 memcpy( dst, var, len );
730 /* Null-terminate the string */
740 /***********************************************************************
741 * ExpandEnvironmentStringsW (KERNEL32.@)
743 DWORD WINAPI ExpandEnvironmentStringsW( LPCWSTR src, LPWSTR dst, DWORD len )
745 LPSTR srcA = HEAP_strdupWtoA( GetProcessHeap(), 0, src );
746 LPSTR dstA = dst ? HeapAlloc( GetProcessHeap(), 0, len ) : NULL;
747 DWORD ret = ExpandEnvironmentStringsA( srcA, dstA, len );
750 ret = MultiByteToWideChar( CP_ACP, 0, dstA, -1, dst, len );
751 HeapFree( GetProcessHeap(), 0, dstA );
753 HeapFree( GetProcessHeap(), 0, srcA );
758 /***********************************************************************
759 * GetDOSEnvironment (KERNEL.131)
761 SEGPTR WINAPI GetDOSEnvironment16(void)
763 return MAKESEGPTR( env_sel, 0 );
767 /***********************************************************************
768 * GetStdHandle (KERNEL32.@)
770 HANDLE WINAPI GetStdHandle( DWORD std_handle )
774 case STD_INPUT_HANDLE: return current_envdb.hStdin;
775 case STD_OUTPUT_HANDLE: return current_envdb.hStdout;
776 case STD_ERROR_HANDLE: return current_envdb.hStderr;
778 SetLastError( ERROR_INVALID_PARAMETER );
779 return INVALID_HANDLE_VALUE;
783 /***********************************************************************
784 * SetStdHandle (KERNEL32.@)
786 BOOL WINAPI SetStdHandle( DWORD std_handle, HANDLE handle )
790 case STD_INPUT_HANDLE: current_envdb.hStdin = handle; return TRUE;
791 case STD_OUTPUT_HANDLE: current_envdb.hStdout = handle; return TRUE;
792 case STD_ERROR_HANDLE: current_envdb.hStderr = handle; return TRUE;
794 SetLastError( ERROR_INVALID_PARAMETER );
799 /***********************************************************************
800 * GetStartupInfoA (KERNEL32.@)
802 VOID WINAPI GetStartupInfoA( LPSTARTUPINFOA info )
804 *info = current_startupinfo;
808 /***********************************************************************
809 * GetStartupInfoW (KERNEL32.@)
811 VOID WINAPI GetStartupInfoW( LPSTARTUPINFOW info )
813 UNICODE_STRING usBuffer;
814 info->cb = sizeof(STARTUPINFOW);
815 info->dwX = current_startupinfo.dwX;
816 info->dwY = current_startupinfo.dwY;
817 info->dwXSize = current_startupinfo.dwXSize;
818 info->dwXCountChars = current_startupinfo.dwXCountChars;
819 info->dwYCountChars = current_startupinfo.dwYCountChars;
820 info->dwFillAttribute = current_startupinfo.dwFillAttribute;
821 info->dwFlags = current_startupinfo.dwFlags;
822 info->wShowWindow = current_startupinfo.wShowWindow;
823 info->cbReserved2 = current_startupinfo.cbReserved2;
824 info->lpReserved2 = current_startupinfo.lpReserved2;
825 info->hStdInput = current_startupinfo.hStdInput;
826 info->hStdOutput = current_startupinfo.hStdOutput;
827 info->hStdError = current_startupinfo.hStdError;
828 RtlCreateUnicodeStringFromAsciiz (&usBuffer,current_startupinfo.lpReserved);
829 info->lpReserved = usBuffer.Buffer;
830 RtlCreateUnicodeStringFromAsciiz (&usBuffer,current_startupinfo.lpDesktop);
831 info->lpDesktop = usBuffer.Buffer;
832 RtlCreateUnicodeStringFromAsciiz (&usBuffer,current_startupinfo.lpTitle);
833 info->lpTitle = usBuffer.Buffer;