2 * Ntdll environment functions
4 * Copyright 1996, 1998 Alexandre Julliard
5 * Copyright 2003 Eric Pouech
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include "wine/unicode.h"
31 #include "wine/debug.h"
32 #include "ntdll_misc.h"
34 WINE_DEFAULT_DEBUG_CHANNEL(environ);
36 /******************************************************************************
37 * RtlCreateEnvironment [NTDLL.@]
39 NTSTATUS WINAPI RtlCreateEnvironment(BOOLEAN inherit, PWSTR* env)
43 TRACE("(%u,%p)!\n", inherit, env);
47 MEMORY_BASIC_INFORMATION mbi;
51 nts = NtQueryVirtualMemory(NtCurrentProcess(), ntdll_get_process_pmts()->Environment,
52 0, &mbi, sizeof(mbi), NULL);
53 if (nts == STATUS_SUCCESS)
56 nts = NtAllocateVirtualMemory(NtCurrentProcess(), (void**)env, 0, &mbi.RegionSize,
57 MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
58 if (nts == STATUS_SUCCESS)
59 memcpy(*env, ntdll_get_process_pmts()->Environment, mbi.RegionSize);
67 nts = NtAllocateVirtualMemory(NtCurrentProcess(), (void**)env, 0, &size,
68 MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
69 if (nts == STATUS_SUCCESS)
70 memset(*env, 0, size);
76 /******************************************************************************
77 * RtlDestroyEnvironment [NTDLL.@]
79 NTSTATUS WINAPI RtlDestroyEnvironment(PWSTR env)
83 TRACE("(%p)!\n", env);
85 return NtFreeVirtualMemory(NtCurrentProcess(), (void**)&env, &size, MEM_RELEASE);
88 static LPCWSTR ENV_FindVariable(PCWSTR var, PCWSTR name, unsigned namelen)
90 for (; *var; var += strlenW(var) + 1)
92 /* match var names, but avoid setting a var with a name including a '='
93 * (a starting '=' is valid though)
95 if (strncmpiW(var, name, namelen) == 0 && var[namelen] == '=' &&
96 strchrW(var + 1, '=') == var + namelen)
98 return var + namelen + 1;
104 /******************************************************************
105 * RtlQueryEnvironmentVariable_U [NTDLL.@]
107 * NOTES: when the buffer is too small, the string is not written, but if the
108 * terminating null char is the only char that cannot be written, then
109 * all chars (except the null) are written and success is returned
110 * (behavior of Win2k at least)
112 NTSTATUS WINAPI RtlQueryEnvironmentVariable_U(PWSTR env,
113 PUNICODE_STRING name,
114 PUNICODE_STRING value)
116 NTSTATUS nts = STATUS_VARIABLE_NOT_FOUND;
120 TRACE("%s %s %p\n", debugstr_w(env), debugstr_w(name->Buffer), value);
123 namelen = name->Length / sizeof(WCHAR);
124 if (!namelen) return nts;
129 var = ntdll_get_process_pmts()->Environment;
133 var = ENV_FindVariable(var, name->Buffer, namelen);
136 value->Length = strlenW(var) * sizeof(WCHAR);
138 if (value->Length <= value->MaximumLength)
140 memmove(value->Buffer, var, min(value->Length + sizeof(WCHAR), value->MaximumLength));
141 nts = STATUS_SUCCESS;
143 else nts = STATUS_BUFFER_TOO_SMALL;
146 if (!env) RtlReleasePebLock();
151 /******************************************************************
152 * RtlSetCurrentEnvironment [NTDLL.@]
155 void WINAPI RtlSetCurrentEnvironment(PWSTR new_env, PWSTR* old_env)
157 TRACE("(%p %p)\n", new_env, old_env);
161 if (old_env) *old_env = ntdll_get_process_pmts()->Environment;
162 ntdll_get_process_pmts()->Environment = new_env;
168 /******************************************************************************
169 * RtlSetEnvironmentVariable [NTDLL.@]
171 NTSTATUS WINAPI RtlSetEnvironmentVariable(PWSTR* penv, PUNICODE_STRING name,
172 PUNICODE_STRING value)
176 NTSTATUS nts = STATUS_VARIABLE_NOT_FOUND;
177 MEMORY_BASIC_INFORMATION mbi;
179 TRACE("(%p,%s,%s)\n",
180 penv, debugstr_w(name->Buffer),
181 value ? debugstr_w(value->Buffer) : "--nil--");
183 if (!name || !name->Buffer || !name->Buffer[0])
184 return STATUS_INVALID_PARAMETER_1;
185 /* variable names can't contain a '=' except as a first character */
186 if (strchrW(name->Buffer + 1, '=')) return STATUS_INVALID_PARAMETER;
191 env = ntdll_get_process_pmts()->Environment;
194 len = name->Length / sizeof(WCHAR);
196 /* compute current size of environment */
197 for (p = env; *p; p += strlenW(p) + 1);
198 old_size = p + 1 - env;
200 /* Find a place to insert the string */
201 for (p = env; *p; p += strlenW(p) + 1)
203 if (!strncmpiW(name->Buffer, p, len) && (p[len] == '=')) break;
205 if (!value && !*p) goto done; /* Value to remove doesn't exist */
207 /* Realloc the buffer */
208 len = value ? len + value->Length / sizeof(WCHAR) + 2 : 0;
209 if (*p) len -= strlenW(p) + 1; /* The name already exists */
213 LPWSTR next = p + strlenW(p) + 1; /* We know there is a next one */
214 memmove(next + len, next, (old_size - (next - env)) * sizeof(WCHAR));
217 nts = NtQueryVirtualMemory(NtCurrentProcess(), env, 0,
218 &mbi, sizeof(mbi), NULL);
219 if (nts != STATUS_SUCCESS) goto done;
221 if ((old_size + len) * sizeof(WCHAR) > mbi.RegionSize)
224 ULONG new_size = (old_size + len) * sizeof(WCHAR);
227 nts = NtAllocateVirtualMemory(NtCurrentProcess(), (void**)&new_env, 0,
228 &new_size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
229 if (nts != STATUS_SUCCESS) goto done;
231 memmove(new_env, env, (p - env) * sizeof(WCHAR));
233 memmove(new_env + (p - env) + len, p, (old_size - (p - env)) * sizeof(WCHAR));
234 p = new_env + (p - env);
236 RtlDestroyEnvironment(env);
237 if (!penv) ntdll_get_process_pmts()->Environment = new_env;
238 else *penv = new_env;
243 if (len > 0) memmove(p + len, p, (old_size - (p - env)) * sizeof(WCHAR));
246 /* Set the new string */
249 static const WCHAR equalW[] = {'=',0};
251 strcpyW(p, name->Buffer);
253 strcatW(p, value->Buffer);
256 if (!penv) RtlReleasePebLock();
261 /******************************************************************
262 * RtlExpandEnvironmentStrings_U (NTDLL.@)
265 NTSTATUS WINAPI RtlExpandEnvironmentStrings_U(PWSTR renv, const UNICODE_STRING* us_src,
266 PUNICODE_STRING us_dst, PULONG plen)
268 DWORD len, count, total_size = 1; /* 1 for terminating '\0' */
269 LPCWSTR env, src, p, var;
272 src = us_src->Buffer;
273 count = us_dst->MaximumLength / sizeof(WCHAR);
274 dst = count ? us_dst->Buffer : NULL;
279 env = ntdll_get_process_pmts()->Environment;
287 if ((p = strchrW( src, '%' ))) len = p - src;
288 else len = strlenW(src);
292 else /* we are at the start of a variable */
294 if ((p = strchrW( src + 1, '%' )))
296 len = p - src - 1; /* Length of the variable name */
297 if ((var = ENV_FindVariable( env, src + 1, len )))
299 src += len + 2; /* Skip the variable name */
304 var = src; /* Copy original name instead */
309 else /* unfinished variable name, ignore it */
312 len = strlenW(src); /* Copy whole string */
319 if (count < len) len = count;
320 memcpy(dst, var, len * sizeof(WCHAR));
326 if (!renv) RtlReleasePebLock();
328 /* Null-terminate the string */
329 if (dst && count) *dst = '\0';
331 us_dst->Length = (dst) ? (dst - us_dst->Buffer) * sizeof(WCHAR) : 0;
332 if (plen) *plen = total_size * sizeof(WCHAR);
334 return (count) ? STATUS_SUCCESS : STATUS_BUFFER_TOO_SMALL;
337 /***********************************************************************
340 * Build the Win32 environment from the Unix environment
342 static NTSTATUS build_initial_environment(void)
344 extern char **environ;
351 /* Compute the total size of the Unix environment */
353 for (e = environ; *e; e++)
355 if (!memcmp(*e, "PATH=", 5)) continue;
356 size += strlen(*e) + 1;
358 size *= sizeof(WCHAR);
360 /* Now allocate the environment */
361 nts = NtAllocateVirtualMemory(NtCurrentProcess(), (void**)&p, 0, &size,
362 MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
363 if (nts != STATUS_SUCCESS) return nts;
365 ntdll_get_process_pmts()->Environment = p;
367 /* And fill it with the Unix environment */
368 for (e = environ; *e; e++)
370 /* skip Unix PATH and store WINEPATH as PATH */
371 if (!memcmp(*e, "PATH=", 5)) continue;
372 if (!memcmp(*e, "WINEPATH=", 9 )) te = *e + 4; else te = *e;
374 RtlMultiByteToUnicodeN(p, len * sizeof(WCHAR), NULL, te, len);
380 return STATUS_SUCCESS;
383 static void init_unicode( UNICODE_STRING* us, const char** src, size_t len)
388 ansi.Buffer = (char*)*src;
390 ansi.MaximumLength = len;
391 /* FIXME: should check value returned */
392 RtlAnsiStringToUnicodeString( us, &ansi, TRUE );
397 /***********************************************************************
398 * init_user_process_pmts
400 * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
402 BOOL init_user_process_pmts( size_t info_size )
408 RTL_USER_PROCESS_PARAMETERS *rupp;
410 if (build_initial_environment() != STATUS_SUCCESS) return FALSE;
411 if (!info_size) return TRUE;
412 if (!(data = RtlAllocateHeap( ntdll_get_process_heap(), 0, info_size )))
415 SERVER_START_REQ( get_startup_info )
417 wine_server_set_reply( req, data, info_size );
418 wine_server_call( req );
419 info_size = wine_server_reply_size( reply );
423 if (info_size < sizeof(info.size)) goto done;
424 len = min( info_size, ((startup_info_t *)data)->size );
425 memset( &info, 0, sizeof(info) );
426 memcpy( &info, data, len );
427 src = (char *)data + len;
430 /* fixup the lengths */
431 if (info.filename_len > info_size) info.filename_len = info_size;
432 info_size -= info.filename_len;
433 if (info.cmdline_len > info_size) info.cmdline_len = info_size;
434 info_size -= info.cmdline_len;
435 if (info.desktop_len > info_size) info.desktop_len = info_size;
436 info_size -= info.desktop_len;
437 if (info.title_len > info_size) info.title_len = info_size;
439 rupp = NtCurrentTeb()->Peb->ProcessParameters;
441 init_unicode( &rupp->ImagePathName, &src, info.filename_len );
442 init_unicode( &rupp->CommandLine, &src, info.cmdline_len );
443 init_unicode( &rupp->Desktop, &src, info.desktop_len );
444 init_unicode( &rupp->WindowTitle, &src, info.title_len );
448 rupp->dwXSize = info.cx;
449 rupp->dwYSize = info.cy;
450 rupp->dwXCountChars = info.x_chars;
451 rupp->dwYCountChars = info.y_chars;
452 rupp->dwFillAttribute = info.attribute;
453 rupp->wShowWindow = info.cmd_show;
454 rupp->dwFlags = info.flags;
457 RtlFreeHeap( ntdll_get_process_heap(), 0, data );
461 /***********************************************************************
464 * Set the Wine library argc/argv global variables.
466 static void set_library_argv( char **argv )
471 DWORD total = 0, len, reslen;
473 for (argc = 0; argv[argc]; argc++)
475 len = strlen(argv[argc]) + 1;
476 RtlMultiByteToUnicodeN(NULL, 0, &reslen, argv[argc], len);
479 wargv = RtlAllocateHeap( ntdll_get_process_heap(), 0,
480 total + (argc + 1) * sizeof(*wargv) );
481 p = (WCHAR *)(wargv + argc + 1);
482 for (argc = 0; argv[argc]; argc++)
484 len = strlen(argv[argc]) + 1;
485 RtlMultiByteToUnicodeN(p, total, &reslen, argv[argc], len);
487 p += reslen / sizeof(WCHAR);
492 __wine_main_argc = argc;
493 __wine_main_argv = argv;
494 __wine_main_wargv = wargv;
497 /***********************************************************************
500 * Build the command line of a process from the argv array.
502 * Note that it does NOT necessarily include the file name.
503 * Sometimes we don't even have any command line options at all.
505 * We must quote and escape characters so that the argv array can be rebuilt
506 * from the command line:
507 * - spaces and tabs must be quoted
509 * - quotes must be escaped
511 * - if '\'s are followed by a '"', they must be doubled and followed by '\"',
512 * resulting in an odd number of '\' followed by a '"'
515 * - '\'s that are not followed by a '"' can be left as is
519 BOOL build_command_line( char **argv )
524 RTL_USER_PROCESS_PARAMETERS* rupp;
526 set_library_argv( argv );
528 rupp = ntdll_get_process_pmts();
529 if (rupp->CommandLine.Buffer) return TRUE; /* already got it from the server */
532 for (arg = argv; *arg; arg++)
534 int has_space,bcount;
540 if( !*a ) has_space=1;
545 if (*a==' ' || *a=='\t') {
547 } else if (*a=='"') {
548 /* doubling of '\' preceeding a '"',
549 * plus escaping of said '"'
557 len+=(a-*arg)+1 /* for the separating space */;
559 len+=2; /* for the quotes */
562 if (!(rupp->CommandLine.Buffer = RtlAllocateHeap( ntdll_get_process_heap(), 0, len * sizeof(WCHAR))))
565 p = rupp->CommandLine.Buffer;
566 rupp->CommandLine.Length = (len - 1) * sizeof(WCHAR);
567 rupp->CommandLine.MaximumLength = len * sizeof(WCHAR);
568 for (arg = argv; *arg; arg++)
570 int has_space,has_quote;
573 /* Check for quotes and spaces in this argument */
574 has_space=has_quote=0;
576 if( !*a ) has_space=1;
578 if (*a==' ' || *a=='\t') {
582 } else if (*a=='"') {
590 /* Now transfer it to the command line */
607 /* Double all the '\\' preceeding this '"', plus one */
608 for (i=0;i<=bcount;i++)
620 while ((*p=*x++)) p++;
626 if (p > rupp->CommandLine.Buffer)
627 p--; /* remove last space */