f25575c9c236728197dab6f011a74740a43fb588
2 /*
3 * System abstraction utility routines
4 *
5 * Authors:
6 * Jon A. Cruz <jon@joncruz.org>
7 *
8 * Copyright (C) 2004-2005 Authors
9 *
10 * Released under GNU GPL, read the file 'COPYING' for more information
11 */
14 #ifdef HAVE_CONFIG_H
15 # include "config.h"
16 #endif
18 #include <glib.h>
19 #include <glib/gstdio.h>
20 #include <glib/gutils.h>
21 #include <glibmm/fileutils.h>
22 #if GLIB_CHECK_VERSION(2,6,0)
23 #include <glib/gstdio.h>
24 #endif
25 #include <glibmm/ustring.h>
26 #include <gtk/gtkmessagedialog.h>
28 #include "preferences.h"
29 #include "sys.h"
31 #ifdef WIN32
33 #define BYPASS_GLIB_SPAWN 1
35 #ifdef BYPASS_GLIB_SPAWN
37 #include <process.h> // declares spawn functions
38 #include <wchar.h> // declares _wspawn functions
40 #ifndef __MINGW32__
41 # ifdef __cplusplus
42 extern "C" {
43 # endif
44 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnl (int, const wchar_t*, const wchar_t*, ...);
45 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnle (int, const wchar_t*, const wchar_t*, ...);
46 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnlp (int, const wchar_t*, const wchar_t*, ...);
47 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnlpe (int, const wchar_t*, const wchar_t*, ...);
48 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnv (int, const wchar_t*, const wchar_t* const*);
49 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnve (int, const wchar_t*, const wchar_t* const*, const wchar_t* const*);
50 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnvp (int, const wchar_t*, const wchar_t* const*);
51 _CRTIMP int __cdecl __MINGW_NOTHROW _wspawnvpe (int, const wchar_t*, const wchar_t* const*, const wchar_t* const*);
52 # ifdef __cplusplus
53 }
54 # endif
55 #endif
56 #include <unistd.h>
57 #include <glibmm/i18n.h>
58 #include <fcntl.h>
59 #include <io.h>
61 #endif // BYPASS_GLIB_SPAWN
63 // For now to get at is_os_wide().
64 #include "extension/internal/win32.h"
65 using Inkscape::Extension::Internal::PrintWin32;
67 #endif // WIN32
69 //#define INK_DUMP_FILENAME_CONV 1
70 #undef INK_DUMP_FILENAME_CONV
72 //#define INK_DUMP_FOPEN 1
73 #undef INK_DUMP_FOPEN
75 void dump_str(gchar const *str, gchar const *prefix);
76 void dump_ustr(Glib::ustring const &ustr);
78 extern guint update_in_progress;
81 #define DEBUG_MESSAGE(key, ...) \
82 {\
83 Inkscape::Preferences *prefs = Inkscape::Preferences::get(); \
84 gint dump = prefs->getBool("/options/bulia/" #key) ? 1 : 0;\
85 gint dumpD = prefs->getBool("/options/bulia/" #key"D") ? 1 : 0;\
86 gint dumpD2 = prefs->getBool("/options/bulia/" #key"D2") ? 1 : 0;\
87 dumpD &= ( (update_in_progress == 0) || dumpD2 );\
88 if ( dump )\
89 {\
90 g_message( __VA_ARGS__ );\
91 \
92 }\
93 if ( dumpD )\
94 {\
95 GtkWidget *dialog = gtk_message_dialog_new(NULL,\
96 GTK_DIALOG_DESTROY_WITH_PARENT, \
97 GTK_MESSAGE_INFO, \
98 GTK_BUTTONS_OK, \
99 __VA_ARGS__ \
100 );\
101 g_signal_connect_swapped(dialog, "response",\
102 G_CALLBACK(gtk_widget_destroy), \
103 dialog); \
104 gtk_widget_show_all( dialog );\
105 }\
106 }
111 void Inkscape::IO::dump_fopen_call( char const *utf8name, char const *id )
112 {
113 #ifdef INK_DUMP_FOPEN
114 Glib::ustring str;
115 for ( int i = 0; utf8name[i]; i++ )
116 {
117 if ( utf8name[i] == '\\' )
118 {
119 str += "\\\\";
120 }
121 else if ( (utf8name[i] >= 0x20) && ((0x0ff & utf8name[i]) <= 0x7f) )
122 {
123 str += utf8name[i];
124 }
125 else
126 {
127 gchar tmp[32];
128 g_snprintf( tmp, sizeof(tmp), "\\x%02x", (0x0ff & utf8name[i]) );
129 str += tmp;
130 }
131 }
132 g_message( "fopen call %s for [%s]", id, str.data() );
133 #else
134 (void)utf8name;
135 (void)id;
136 #endif
137 }
139 FILE *Inkscape::IO::fopen_utf8name( char const *utf8name, char const *mode )
140 {
141 static gint counter = 0;
142 FILE* fp = NULL;
144 DEBUG_MESSAGE( dumpOne, "entering fopen_utf8name( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
146 #ifndef WIN32
147 DEBUG_MESSAGE( dumpOne, " STEP 0 ( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
148 gchar *filename = g_filename_from_utf8( utf8name, -1, NULL, NULL, NULL );
149 if ( filename )
150 {
151 DEBUG_MESSAGE( dumpOne, " STEP 1 ( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
152 fp = std::fopen(filename, mode);
153 DEBUG_MESSAGE( dumpOne, " STEP 2 ( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
154 g_free(filename);
155 DEBUG_MESSAGE( dumpOne, " STEP 3 ( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
156 filename = 0;
157 }
158 #else
159 Glib::ustring how( mode );
160 how.append("b");
161 DEBUG_MESSAGE( dumpOne, " calling is_os_wide() ( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
163 fp = g_fopen(utf8name, how.c_str());
164 #endif
166 DEBUG_MESSAGE( dumpOne, "leaving fopen_utf8name( '%s', '%s' )[%d]", utf8name, mode, (counter++) );
168 return fp;
169 }
172 int Inkscape::IO::mkdir_utf8name( char const *utf8name )
173 {
174 static gint counter = 0;
175 int retval = -1;
177 DEBUG_MESSAGE( dumpMk, "entering mkdir_utf8name( '%s' )[%d]", utf8name, (counter++) );
179 #ifndef WIN32
180 DEBUG_MESSAGE( dumpMk, " STEP 0 ( '%s' )[%d]", utf8name, (counter++) );
181 gchar *filename = g_filename_from_utf8( utf8name, -1, NULL, NULL, NULL );
182 if ( filename )
183 {
184 DEBUG_MESSAGE( dumpMk, " STEP 1 ( '%s' )[%d]", utf8name, (counter++) );
185 retval = ::mkdir(filename, S_IRWXU | S_IRGRP | S_IXGRP);
186 DEBUG_MESSAGE( dumpMk, " STEP 2 ( '%s' )[%d]", utf8name, (counter++) );
187 g_free(filename);
188 DEBUG_MESSAGE( dumpMk, " STEP 3 ( '%s' )[%d]", utf8name, (counter++) );
189 filename = 0;
190 }
191 #else
192 DEBUG_MESSAGE( dumpMk, " calling is_os_wide() ( '%s' )[%d]", utf8name, (counter++) );
194 // Mode should be ingnored inside of glib on the way in
195 retval = g_mkdir( utf8name, 0 );
196 #endif
198 DEBUG_MESSAGE( dumpMk, "leaving mkdir_utf8name( '%s' )[%d]", utf8name, (counter++) );
200 return retval;
201 }
203 /*
204 * Wrapper around Glib::file_open_tmp().
205 * Returns a handle to the temp file.
206 * name_used contains the actual name used (a raw filename, not necessarily utf8).
207 *
208 * Returns:
209 * A file handle (as from open()) to the file opened for reading and writing.
210 * The file is opened in binary mode on platforms where there is a difference.
211 * The file handle should be closed with close().
212 *
213 * Note:
214 * On Windows Vista Glib::file_open_tmp fails with the current version of glibmm
215 * A special case is implemented for WIN32. This can be removed if the issue is fixed
216 * in future versions of glibmm
217 * */
218 int Inkscape::IO::file_open_tmp(std::string& name_used, const std::string& prefix)
219 {
220 #ifndef WIN32
221 return Glib::file_open_tmp(name_used, prefix);
222 #else
223 /* Special case for WIN32 due to a bug in glibmm
224 * (only needed for Windows Vista, but since there is only one windows build all builds get the workaround)
225 * The workaround can be removed if the bug is fixed in glibmm
226 *
227 * The code is mostly identical to the implementation in glibmm
228 * http://svn.gnome.org/svn/glibmm/branches/glibmm-2-12/glib/src/fileutils.ccg
229 * */
231 std::string basename_template (prefix);
232 basename_template += "XXXXXX"; // this sillyness shouldn't be in the interface
234 GError* error = 0;
235 gchar *buf_name_used;
237 gint fileno = g_file_open_tmp(basename_template.c_str(), &buf_name_used, &error);
239 if(error)
240 Glib::Error::throw_exception(error);
242 name_used = g_strdup(buf_name_used);
243 g_free(buf_name_used);
244 return fileno;
245 #endif
246 }
248 bool Inkscape::IO::file_test( char const *utf8name, GFileTest test )
249 {
250 bool exists = false;
252 if ( utf8name ) {
253 gchar *filename = NULL;
254 if (utf8name && !g_utf8_validate(utf8name, -1, NULL)) {
255 /* FIXME: Trying to guess whether or not a filename is already in utf8 is unreliable.
256 If any callers pass non-utf8 data (e.g. using g_get_home_dir), then change caller to
257 use simple g_file_test. Then add g_return_val_if_fail(g_utf_validate(...), false)
258 to beginning of this function. */
259 filename = g_strdup(utf8name);
260 // Looks like g_get_home_dir isn't safe.
261 //g_warning("invalid UTF-8 detected internally. HUNT IT DOWN AND KILL IT!!!");
262 } else {
263 filename = g_filename_from_utf8 ( utf8name, -1, NULL, NULL, NULL );
264 }
265 if ( filename ) {
266 exists = g_file_test (filename, test);
267 g_free(filename);
268 filename = NULL;
269 } else {
270 g_warning( "Unable to convert filename in IO:file_test" );
271 }
272 }
274 return exists;
275 }
277 bool Inkscape::IO::file_is_writable( char const *utf8name)
278 {
279 bool success = true;
281 if ( utf8name) {
282 gchar *filename = NULL;
283 if (utf8name && !g_utf8_validate(utf8name, -1, NULL)) {
284 /* FIXME: Trying to guess whether or not a filename is already in utf8 is unreliable.
285 If any callers pass non-utf8 data (e.g. using g_get_home_dir), then change caller to
286 use simple g_file_test. Then add g_return_val_if_fail(g_utf_validate(...), false)
287 to beginning of this function. */
288 filename = g_strdup(utf8name);
289 // Looks like g_get_home_dir isn't safe.
290 //g_warning("invalid UTF-8 detected internally. HUNT IT DOWN AND KILL IT!!!");
291 } else {
292 filename = g_filename_from_utf8 ( utf8name, -1, NULL, NULL, NULL );
293 }
294 if ( filename ) {
295 struct stat st;
296 if(g_lstat (filename, &st) == 0) {
297 success = ((st.st_mode & S_IWRITE) != 0);
298 }
299 g_free(filename);
300 filename = NULL;
301 } else {
302 g_warning( "Unable to convert filename in IO:file_test" );
303 }
304 }
306 return success;
307 }
309 /** Wrapper around g_dir_open, but taking a utf8name as first argument. */
310 GDir *
311 Inkscape::IO::dir_open(gchar const *const utf8name, guint const flags, GError **const error)
312 {
313 gchar *const opsys_name = g_filename_from_utf8(utf8name, -1, NULL, NULL, error);
314 if (opsys_name) {
315 GDir *ret = g_dir_open(opsys_name, flags, error);
316 g_free(opsys_name);
317 return ret;
318 } else {
319 return NULL;
320 }
321 }
323 /**
324 * Like g_dir_read_name, but returns a utf8name (which must be freed, unlike g_dir_read_name).
325 *
326 * N.B. Skips over any dir entries that fail to convert to utf8.
327 */
328 gchar *
329 Inkscape::IO::dir_read_utf8name(GDir *dir)
330 {
331 for (;;) {
332 gchar const *const opsys_name = g_dir_read_name(dir);
333 if (!opsys_name) {
334 return NULL;
335 }
336 gchar *utf8_name = g_filename_to_utf8(opsys_name, -1, NULL, NULL, NULL);
337 if (utf8_name) {
338 return utf8_name;
339 }
340 }
341 }
344 gchar* Inkscape::IO::locale_to_utf8_fallback( const gchar *opsysstring,
345 gssize len,
346 gsize *bytes_read,
347 gsize *bytes_written,
348 GError **error )
349 {
350 gchar *result = NULL;
351 if ( opsysstring ) {
352 gchar *newFileName = g_locale_to_utf8( opsysstring, len, bytes_read, bytes_written, error );
353 if ( newFileName ) {
354 if ( !g_utf8_validate(newFileName, -1, NULL) ) {
355 g_warning( "input filename did not yield UTF-8" );
356 g_free( newFileName );
357 } else {
358 result = newFileName;
359 }
360 newFileName = 0;
361 } else if ( g_utf8_validate(opsysstring, -1, NULL) ) {
362 // This *might* be a case that we want
363 // g_warning( "input failed filename->utf8, fell back to original" );
364 // TODO handle cases when len >= 0
365 result = g_strdup( opsysstring );
366 } else {
367 gchar const *charset = 0;
368 g_get_charset(&charset);
369 g_warning( "input filename conversion failed for file with locale charset '%s'", charset );
370 }
371 }
372 return result;
373 }
375 #ifdef BYPASS_GLIB_SPAWN
376 /*
377 this code was taken from the original glib sources
378 */
379 #define GSPAWN_HELPER
381 enum
382 {
383 CHILD_NO_ERROR,
384 CHILD_CHDIR_FAILED,
385 CHILD_SPAWN_FAILED,
386 };
388 enum {
389 ARG_CHILD_ERR_REPORT = 1,
390 ARG_HELPER_SYNC,
391 ARG_STDIN,
392 ARG_STDOUT,
393 ARG_STDERR,
394 ARG_WORKING_DIRECTORY,
395 ARG_CLOSE_DESCRIPTORS,
396 ARG_USE_PATH,
397 ARG_WAIT,
398 ARG_PROGRAM,
399 ARG_COUNT = ARG_PROGRAM
400 };
401 static int debug = 0;
402 #define HELPER_PROCESS "gspawn-win32-helper"
405 static int
406 dup_noninherited (int fd,
407 int mode)
408 {
409 HANDLE filehandle;
411 DuplicateHandle (GetCurrentProcess (), (LPHANDLE) _get_osfhandle (fd),
412 GetCurrentProcess (), &filehandle,
413 0, FALSE, DUPLICATE_SAME_ACCESS);
414 close (fd);
415 return _open_osfhandle ((LONG_PTR) filehandle, mode | _O_NOINHERIT);
416 }
419 /* The helper process writes a status report back to us, through a
420 * pipe, consisting of two ints.
421 */
422 static gboolean
423 read_helper_report (int fd,
424 gint report[2],
425 GError **error)
426 {
427 gint bytes = 0;
429 while (bytes < sizeof(gint)*2)
430 {
431 gint chunk;
433 if (debug)
434 g_print ("%s:read_helper_report: read %d...\n",
435 __FILE__,
436 sizeof(gint)*2 - bytes);
438 chunk = read (fd, ((gchar*)report) + bytes,
439 sizeof(gint)*2 - bytes);
441 if (debug)
442 g_print ("...got %d bytes\n", chunk);
444 if (chunk < 0)
445 {
446 /* Some weird shit happened, bail out */
448 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
449 _("Failed to read from child pipe (%s)"),
450 g_strerror (errno));
452 return FALSE;
453 }
454 else if (chunk == 0)
455 {
456 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
457 _("Failed to read from child pipe (%s)"),
458 "EOF");
459 break; /* EOF */
460 }
461 else
462 bytes += chunk;
463 }
465 if (bytes < sizeof(gint)*2)
466 return FALSE;
468 return TRUE;
469 }
472 static void
473 set_child_error (gint report[2],
474 const gchar *working_directory,
475 GError **error)
476 {
477 switch (report[0])
478 {
479 case CHILD_CHDIR_FAILED:
480 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_CHDIR,
481 _("Failed to change to directory '%s' (%s)"),
482 working_directory,
483 g_strerror (report[1]));
484 break;
485 case CHILD_SPAWN_FAILED:
486 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
487 _("Failed to execute child process (%s)"),
488 g_strerror (report[1]));
489 break;
490 default:
491 g_assert_not_reached ();
492 }
493 }
495 static gchar *
496 protect_argv_string (const gchar *string)
497 {
498 const gchar *p = string;
499 gchar *retval, *q;
500 gint len = 0;
501 gboolean need_dblquotes = FALSE;
502 while (*p)
503 {
504 if (*p == ' ' || *p == '\t')
505 need_dblquotes = TRUE;
506 else if (*p == '"')
507 len++;
508 else if (*p == '\\')
509 {
510 const gchar *pp = p;
511 while (*pp && *pp == '\\')
512 pp++;
513 if (*pp == '"')
514 len++;
515 }
516 len++;
517 p++;
518 }
520 q = retval = (gchar *)g_malloc (len + need_dblquotes*2 + 1);
521 p = string;
523 if (need_dblquotes)
524 *q++ = '"';
526 while (*p)
527 {
528 if (*p == '"')
529 *q++ = '\\';
530 else if (*p == '\\')
531 {
532 const gchar *pp = p;
533 while (*pp && *pp == '\\')
534 pp++;
535 if (*pp == '"')
536 *q++ = '\\';
537 }
538 *q++ = *p;
539 p++;
540 }
542 if (need_dblquotes)
543 *q++ = '"';
544 *q++ = '\0';
546 return retval;
547 }
550 static gint
551 protect_argv (gchar **argv,
552 gchar ***new_argv)
553 {
554 gint i;
555 gint argc = 0;
557 while (argv[argc])
558 ++argc;
559 *new_argv = g_new (gchar *, argc+1);
561 /* Quote each argv element if necessary, so that it will get
562 * reconstructed correctly in the C runtime startup code. Note that
563 * the unquoting algorithm in the C runtime is really weird, and
564 * rather different than what Unix shells do. See stdargv.c in the C
565 * runtime sources (in the Platform SDK, in src/crt).
566 *
567 * Note that an new_argv[0] constructed by this function should
568 * *not* be passed as the filename argument to a spawn* or exec*
569 * family function. That argument should be the real file name
570 * without any quoting.
571 */
572 for (i = 0; i < argc; i++)
573 (*new_argv)[i] = protect_argv_string (argv[i]);
575 (*new_argv)[argc] = NULL;
577 return argc;
578 }
581 static gboolean
582 utf8_charv_to_wcharv (char **utf8_charv,
583 wchar_t ***wcharv,
584 int *error_index,
585 GError **error)
586 {
587 wchar_t **retval = NULL;
589 *wcharv = NULL;
590 if (utf8_charv != NULL)
591 {
592 int n = 0, i;
594 while (utf8_charv[n])
595 n++;
596 retval = g_new (wchar_t *, n + 1);
598 for (i = 0; i < n; i++)
599 {
600 retval[i] = (wchar_t *)g_utf8_to_utf16 (utf8_charv[i], -1, NULL, NULL, error);
601 if (retval[i] == NULL)
602 {
603 if (error_index)
604 *error_index = i;
605 while (i)
606 g_free (retval[--i]);
607 g_free (retval);
608 return FALSE;
609 }
610 }
612 retval[n] = NULL;
613 }
614 *wcharv = retval;
615 return TRUE;
616 }
619 /* Avoids a danger in threaded situations (calling close()
620 * on a file descriptor twice, and another thread has
621 * re-opened it since the first close)
622 */
623 static void
624 close_and_invalidate (gint *fd)
625 {
626 if (*fd < 0)
627 return;
629 close (*fd);
630 *fd = -1;
631 }
634 static gboolean
635 do_spawn_directly (gint *exit_status,
636 gboolean do_return_handle,
637 GSpawnFlags flags,
638 gchar **argv,
639 char **envp,
640 char **protected_argv,
641 GSpawnChildSetupFunc child_setup,
642 gpointer user_data,
643 GPid *child_handle,
644 GError **error)
645 {
646 const int mode = (exit_status == NULL) ? P_NOWAIT : P_WAIT;
647 char **new_argv;
648 int rc = -1;
649 int saved_errno;
650 GError *conv_error = NULL;
651 gint conv_error_index;
652 wchar_t *wargv0, **wargv, **wenvp;
654 new_argv = (flags & G_SPAWN_FILE_AND_ARGV_ZERO) ? protected_argv + 1 : protected_argv;
656 wargv0 = (wchar_t *)g_utf8_to_utf16 (argv[0], -1, NULL, NULL, &conv_error);
657 if (wargv0 == NULL)
658 {
659 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
660 _("Invalid program name: %s"),
661 conv_error->message);
662 g_error_free (conv_error);
664 return FALSE;
665 }
667 if (!utf8_charv_to_wcharv (new_argv, &wargv, &conv_error_index, &conv_error))
668 {
669 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
670 _("Invalid string in argument vector at %d: %s"),
671 conv_error_index, conv_error->message);
672 g_error_free (conv_error);
673 g_free (wargv0);
675 return FALSE;
676 }
678 if (!utf8_charv_to_wcharv (envp, &wenvp, NULL, &conv_error))
679 {
680 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
681 _("Invalid string in environment: %s"),
682 conv_error->message);
683 g_error_free (conv_error);
684 g_free (wargv0);
685 g_strfreev ((gchar **) wargv);
687 return FALSE;
688 }
690 if (child_setup)
691 (* child_setup) (user_data);
693 if (flags & G_SPAWN_SEARCH_PATH)
694 if (wenvp != NULL)
695 rc = _wspawnvpe (mode, wargv0, (const wchar_t **) wargv, (const wchar_t **) wenvp);
696 else
697 rc = _wspawnvp (mode, wargv0, (const wchar_t **) wargv);
698 else
699 if (wenvp != NULL)
700 rc = _wspawnve (mode, wargv0, (const wchar_t **) wargv, (const wchar_t **) wenvp);
701 else
702 rc = _wspawnv (mode, wargv0, (const wchar_t **) wargv);
704 g_free (wargv0);
705 g_strfreev ((gchar **) wargv);
706 g_strfreev ((gchar **) wenvp);
708 saved_errno = errno;
710 if (rc == -1 && saved_errno != 0)
711 {
712 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
713 _("Failed to execute child process (%s)"),
714 g_strerror (saved_errno));
715 return FALSE;
716 }
718 if (exit_status == NULL)
719 {
720 if (child_handle && do_return_handle)
721 *child_handle = (GPid) rc;
722 else
723 {
724 CloseHandle ((HANDLE) rc);
725 if (child_handle)
726 *child_handle = 0;
727 }
728 }
729 else
730 *exit_status = rc;
732 return TRUE;
733 }
735 static gboolean
736 make_pipe (gint p[2],
737 GError **error)
738 {
739 if (_pipe (p, 4096, _O_BINARY) < 0)
740 {
741 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
742 _("Failed to create pipe for communicating with child process (%s)"),
743 g_strerror (errno));
744 return FALSE;
745 }
746 else
747 return TRUE;
748 }
751 static gboolean
752 do_spawn_with_pipes (gint *exit_status,
753 gboolean do_return_handle,
754 const gchar *working_directory,
755 gchar **argv,
756 char **envp,
757 GSpawnFlags flags,
758 GSpawnChildSetupFunc child_setup,
759 gpointer user_data,
760 GPid *child_handle,
761 gint *standard_input,
762 gint *standard_output,
763 gint *standard_error,
764 gint *err_report,
765 GError **error)
766 {
767 char **protected_argv;
768 char args[ARG_COUNT][10];
769 char **new_argv;
770 int i;
771 int rc = -1;
772 int saved_errno;
773 int argc;
774 int stdin_pipe[2] = { -1, -1 };
775 int stdout_pipe[2] = { -1, -1 };
776 int stderr_pipe[2] = { -1, -1 };
777 int child_err_report_pipe[2] = { -1, -1 };
778 int helper_sync_pipe[2] = { -1, -1 };
779 int helper_report[2];
780 static gboolean warned_about_child_setup = FALSE;
781 GError *conv_error = NULL;
782 gint conv_error_index;
783 gchar *helper_process;
784 CONSOLE_CURSOR_INFO cursor_info;
785 wchar_t *whelper, **wargv, **wenvp;
786 //extern gchar *_glib_get_installation_directory (void);
787 gchar *glib_top;
789 if (child_setup && !warned_about_child_setup)
790 {
791 warned_about_child_setup = TRUE;
792 g_warning ("passing a child setup function to the g_spawn functions is pointless and dangerous on Win32");
793 }
795 argc = protect_argv (argv, &protected_argv);
797 if (!standard_input && !standard_output && !standard_error &&
798 (flags & G_SPAWN_CHILD_INHERITS_STDIN) &&
799 !(flags & G_SPAWN_STDOUT_TO_DEV_NULL) &&
800 !(flags & G_SPAWN_STDERR_TO_DEV_NULL) &&
801 (working_directory == NULL || !*working_directory) &&
802 (flags & G_SPAWN_LEAVE_DESCRIPTORS_OPEN))
803 {
804 /* We can do without the helper process */
805 gboolean retval =
806 do_spawn_directly (exit_status, do_return_handle, flags,
807 argv, envp, protected_argv,
808 child_setup, user_data, child_handle,
809 error);
810 g_strfreev (protected_argv);
811 return retval;
812 }
814 if (standard_input && !make_pipe (stdin_pipe, error))
815 goto cleanup_and_fail;
817 if (standard_output && !make_pipe (stdout_pipe, error))
818 goto cleanup_and_fail;
820 if (standard_error && !make_pipe (stderr_pipe, error))
821 goto cleanup_and_fail;
823 if (!make_pipe (child_err_report_pipe, error))
824 goto cleanup_and_fail;
826 if (!make_pipe (helper_sync_pipe, error))
827 goto cleanup_and_fail;
829 new_argv = g_new (char *, argc + 1 + ARG_COUNT);
830 if (GetConsoleCursorInfo (GetStdHandle (STD_OUTPUT_HANDLE), &cursor_info))
831 helper_process = HELPER_PROCESS "-console.exe";
832 else
833 helper_process = HELPER_PROCESS ".exe";
835 glib_top = NULL;
836 if (glib_top != NULL)
837 {
838 helper_process = g_build_filename (glib_top, "bin", helper_process, NULL);
839 g_free (glib_top);
840 }
841 else
842 helper_process = g_strdup (helper_process);
844 new_argv[0] = protect_argv_string (helper_process);
846 sprintf (args[ARG_CHILD_ERR_REPORT], "%d", child_err_report_pipe[1]);
847 new_argv[ARG_CHILD_ERR_REPORT] = args[ARG_CHILD_ERR_REPORT];
849 /* Make the read end of the child error report pipe
850 * noninherited. Otherwise it will needlessly be inherited by the
851 * helper process, and the started actual user process. As such that
852 * shouldn't harm, but it is unnecessary.
853 */
854 child_err_report_pipe[0] = dup_noninherited (child_err_report_pipe[0], _O_RDONLY);
856 if (flags & G_SPAWN_FILE_AND_ARGV_ZERO)
857 {
858 /* Overload ARG_CHILD_ERR_REPORT to also encode the
859 * G_SPAWN_FILE_AND_ARGV_ZERO functionality.
860 */
861 strcat (args[ARG_CHILD_ERR_REPORT], "#");
862 }
864 sprintf (args[ARG_HELPER_SYNC], "%d", helper_sync_pipe[0]);
865 new_argv[ARG_HELPER_SYNC] = args[ARG_HELPER_SYNC];
867 /* Make the write end of the sync pipe noninherited. Otherwise the
868 * helper process will inherit it, and thus if this process happens
869 * to crash before writing the sync byte to the pipe, the helper
870 * process won't read but won't get any EOF either, as it has the
871 * write end open itself.
872 */
873 helper_sync_pipe[1] = dup_noninherited (helper_sync_pipe[1], _O_WRONLY);
875 if (standard_input)
876 {
877 sprintf (args[ARG_STDIN], "%d", stdin_pipe[0]);
878 new_argv[ARG_STDIN] = args[ARG_STDIN];
879 }
880 else if (flags & G_SPAWN_CHILD_INHERITS_STDIN)
881 {
882 /* Let stdin be alone */
883 new_argv[ARG_STDIN] = "-";
884 }
885 else
886 {
887 /* Keep process from blocking on a read of stdin */
888 new_argv[ARG_STDIN] = "z";
889 }
891 if (standard_output)
892 {
893 sprintf (args[ARG_STDOUT], "%d", stdout_pipe[1]);
894 new_argv[ARG_STDOUT] = args[ARG_STDOUT];
895 }
896 else if (flags & G_SPAWN_STDOUT_TO_DEV_NULL)
897 {
898 new_argv[ARG_STDOUT] = "z";
899 }
900 else
901 {
902 new_argv[ARG_STDOUT] = "-";
903 }
905 if (standard_error)
906 {
907 sprintf (args[ARG_STDERR], "%d", stderr_pipe[1]);
908 new_argv[ARG_STDERR] = args[ARG_STDERR];
909 }
910 else if (flags & G_SPAWN_STDERR_TO_DEV_NULL)
911 {
912 new_argv[ARG_STDERR] = "z";
913 }
914 else
915 {
916 new_argv[ARG_STDERR] = "-";
917 }
919 if (working_directory && *working_directory)
920 new_argv[ARG_WORKING_DIRECTORY] = protect_argv_string (working_directory);
921 else
922 new_argv[ARG_WORKING_DIRECTORY] = g_strdup ("-");
924 if (!(flags & G_SPAWN_LEAVE_DESCRIPTORS_OPEN))
925 new_argv[ARG_CLOSE_DESCRIPTORS] = "y";
926 else
927 new_argv[ARG_CLOSE_DESCRIPTORS] = "-";
929 if (flags & G_SPAWN_SEARCH_PATH)
930 new_argv[ARG_USE_PATH] = "y";
931 else
932 new_argv[ARG_USE_PATH] = "-";
934 if (exit_status == NULL)
935 new_argv[ARG_WAIT] = "-";
936 else
937 new_argv[ARG_WAIT] = "w";
939 for (i = 0; i <= argc; i++)
940 new_argv[ARG_PROGRAM + i] = protected_argv[i];
942 //SETUP_DEBUG();
944 if (debug)
945 {
946 g_print ("calling %s with argv:\n", helper_process);
947 for (i = 0; i < argc + 1 + ARG_COUNT; i++)
948 g_print ("argv[%d]: %s\n", i, (new_argv[i] ? new_argv[i] : "NULL"));
949 }
951 if (!utf8_charv_to_wcharv (new_argv, &wargv, &conv_error_index, &conv_error))
952 {
953 if (conv_error_index == ARG_WORKING_DIRECTORY)
954 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_CHDIR,
955 _("Invalid working directory: %s"),
956 conv_error->message);
957 else
958 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
959 _("Invalid string in argument vector at %d: %s"),
960 conv_error_index - ARG_PROGRAM, conv_error->message);
961 g_error_free (conv_error);
962 g_strfreev (protected_argv);
963 g_free (new_argv[0]);
964 g_free (new_argv[ARG_WORKING_DIRECTORY]);
965 g_free (new_argv);
966 g_free (helper_process);
968 goto cleanup_and_fail;
969 }
971 if (!utf8_charv_to_wcharv (envp, &wenvp, NULL, &conv_error))
972 {
973 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
974 _("Invalid string in environment: %s"),
975 conv_error->message);
976 g_error_free (conv_error);
977 g_strfreev (protected_argv);
978 g_free (new_argv[0]);
979 g_free (new_argv[ARG_WORKING_DIRECTORY]);
980 g_free (new_argv);
981 g_free (helper_process);
982 g_strfreev ((gchar **) wargv);
984 goto cleanup_and_fail;
985 }
987 if (child_setup)
988 (* child_setup) (user_data);
990 whelper = (wchar_t *)g_utf8_to_utf16 (helper_process, -1, NULL, NULL, NULL);
991 g_free (helper_process);
993 if (wenvp != NULL)
994 rc = _wspawnvpe (P_NOWAIT, whelper, (const wchar_t **) wargv, (const wchar_t **) wenvp);
995 else
996 rc = _wspawnvp (P_NOWAIT, whelper, (const wchar_t **) wargv);
998 saved_errno = errno;
1000 g_free (whelper);
1001 g_strfreev ((gchar **) wargv);
1002 g_strfreev ((gchar **) wenvp);
1004 /* Close the other process's ends of the pipes in this process,
1005 * otherwise the reader will never get EOF.
1006 */
1007 close_and_invalidate (&child_err_report_pipe[1]);
1008 close_and_invalidate (&helper_sync_pipe[0]);
1009 close_and_invalidate (&stdin_pipe[0]);
1010 close_and_invalidate (&stdout_pipe[1]);
1011 close_and_invalidate (&stderr_pipe[1]);
1013 g_strfreev (protected_argv);
1015 g_free (new_argv[0]);
1016 g_free (new_argv[ARG_WORKING_DIRECTORY]);
1017 g_free (new_argv);
1019 /* Check if gspawn-win32-helper couldn't be run */
1020 if (rc == -1 && saved_errno != 0)
1021 {
1022 g_set_error (error, G_SPAWN_ERROR, G_SPAWN_ERROR_FAILED,
1023 _("Failed to execute helper program (%s)"),
1024 g_strerror (saved_errno));
1025 goto cleanup_and_fail;
1026 }
1028 if (exit_status != NULL)
1029 {
1030 /* Synchronous case. Pass helper's report pipe back to caller,
1031 * which takes care of reading it after the grandchild has
1032 * finished.
1033 */
1034 g_assert (err_report != NULL);
1035 *err_report = child_err_report_pipe[0];
1036 write (helper_sync_pipe[1], " ", 1);
1037 close_and_invalidate (&helper_sync_pipe[1]);
1038 }
1039 else
1040 {
1041 /* Asynchronous case. We read the helper's report right away. */
1042 if (!read_helper_report (child_err_report_pipe[0], helper_report, error))
1043 goto cleanup_and_fail;
1045 close_and_invalidate (&child_err_report_pipe[0]);
1047 switch (helper_report[0])
1048 {
1049 case CHILD_NO_ERROR:
1050 if (child_handle && do_return_handle)
1051 {
1052 /* rc is our HANDLE for gspawn-win32-helper. It has
1053 * told us the HANDLE of its child. Duplicate that into
1054 * a HANDLE valid in this process.
1055 */
1056 if (!DuplicateHandle ((HANDLE) rc, (HANDLE) helper_report[1],
1057 GetCurrentProcess (), (LPHANDLE) child_handle,
1058 0, TRUE, DUPLICATE_SAME_ACCESS))
1059 {
1060 char *emsg = g_win32_error_message (GetLastError ());
1061 g_print("%s\n", emsg);
1062 *child_handle = 0;
1063 }
1064 }
1065 else if (child_handle)
1066 *child_handle = 0;
1067 write (helper_sync_pipe[1], " ", 1);
1068 close_and_invalidate (&helper_sync_pipe[1]);
1069 break;
1071 default:
1072 write (helper_sync_pipe[1], " ", 1);
1073 close_and_invalidate (&helper_sync_pipe[1]);
1074 set_child_error (helper_report, working_directory, error);
1075 goto cleanup_and_fail;
1076 }
1077 }
1079 /* Success against all odds! return the information */
1081 if (standard_input)
1082 *standard_input = stdin_pipe[1];
1083 if (standard_output)
1084 *standard_output = stdout_pipe[0];
1085 if (standard_error)
1086 *standard_error = stderr_pipe[0];
1087 if (rc != -1)
1088 CloseHandle ((HANDLE) rc);
1090 return TRUE;
1092 cleanup_and_fail:
1094 if (rc != -1)
1095 CloseHandle ((HANDLE) rc);
1096 if (child_err_report_pipe[0] != -1)
1097 close (child_err_report_pipe[0]);
1098 if (child_err_report_pipe[1] != -1)
1099 close (child_err_report_pipe[1]);
1100 if (helper_sync_pipe[0] != -1)
1101 close (helper_sync_pipe[0]);
1102 if (helper_sync_pipe[1] != -1)
1103 close (helper_sync_pipe[1]);
1104 if (stdin_pipe[0] != -1)
1105 close (stdin_pipe[0]);
1106 if (stdin_pipe[1] != -1)
1107 close (stdin_pipe[1]);
1108 if (stdout_pipe[0] != -1)
1109 close (stdout_pipe[0]);
1110 if (stdout_pipe[1] != -1)
1111 close (stdout_pipe[1]);
1112 if (stderr_pipe[0] != -1)
1113 close (stderr_pipe[0]);
1114 if (stderr_pipe[1] != -1)
1115 close (stderr_pipe[1]);
1117 return FALSE;
1118 }
1120 gboolean
1121 my_spawn_async_with_pipes_utf8 (const gchar *working_directory,
1122 gchar **argv,
1123 gchar **envp,
1124 GSpawnFlags flags,
1125 GSpawnChildSetupFunc child_setup,
1126 gpointer user_data,
1127 GPid *child_handle,
1128 gint *standard_input,
1129 gint *standard_output,
1130 gint *standard_error,
1131 GError **error)
1132 {
1133 g_return_val_if_fail (argv != NULL, FALSE);
1134 g_return_val_if_fail (standard_output == NULL ||
1135 !(flags & G_SPAWN_STDOUT_TO_DEV_NULL), FALSE);
1136 g_return_val_if_fail (standard_error == NULL ||
1137 !(flags & G_SPAWN_STDERR_TO_DEV_NULL), FALSE);
1138 /* can't inherit stdin if we have an input pipe. */
1139 g_return_val_if_fail (standard_input == NULL ||
1140 !(flags & G_SPAWN_CHILD_INHERITS_STDIN), FALSE);
1142 return do_spawn_with_pipes (NULL,
1143 (flags & G_SPAWN_DO_NOT_REAP_CHILD),
1144 working_directory,
1145 argv,
1146 envp,
1147 flags,
1148 child_setup,
1149 user_data,
1150 child_handle,
1151 standard_input,
1152 standard_output,
1153 standard_error,
1154 NULL,
1155 error);
1156 }
1158 typedef GPid Pid;
1160 // _WRAP_ENUM(SpawnFlags, GSpawnFlags, NO_GTYPE)
1162 /* Helper callback to invoke the actual sigc++ slot.
1163 * We don't need to worry about (un)referencing, since the
1164 * child process gets its own copy of the parent's memory anyway.
1165 */
1166 static void child_setup_callback(void* user_data)
1167 {
1168 #ifdef GLIBMM_EXCEPTIONS_ENABLED
1169 try
1170 {
1171 #endif //GLIBMM_EXCEPTIONS_ENABLED
1172 (*reinterpret_cast<sigc::slot<void>*>(user_data))();
1173 #ifdef GLIBMM_EXCEPTIONS_ENABLED
1174 }
1175 catch(...)
1176 {
1177 Glib::exception_handlers_invoke();
1178 }
1179 #endif //GLIBMM_EXCEPTIONS_ENABLED
1180 }
1183 void my_spawn_async_with_pipes(const std::string& working_directory,
1184 const Glib::ArrayHandle<std::string>& argv,
1185 GSpawnFlags flags,
1186 const sigc::slot<void>& child_setup,
1187 Pid* child_pid,
1188 int* standard_input,
1189 int* standard_output,
1190 int* standard_error)
1191 {
1192 const bool setup_slot = !child_setup.empty();
1193 sigc::slot<void> child_setup_ = child_setup;
1194 GError* error = 0;
1196 my_spawn_async_with_pipes_utf8(
1197 working_directory.c_str(),
1198 const_cast<char**>(argv.data()), 0,
1199 static_cast<GSpawnFlags>(unsigned(flags)),
1200 (setup_slot) ? &child_setup_callback : 0,
1201 (setup_slot) ? &child_setup_ : 0,
1202 child_pid,
1203 standard_input, standard_output, standard_error,
1204 &error);
1206 if(error)
1207 Glib::Error::throw_exception(error);
1208 }
1210 #endif
1212 void
1213 Inkscape::IO::spawn_async_with_pipes( const std::string& working_directory,
1214 const Glib::ArrayHandle<std::string>& argv,
1215 Glib::SpawnFlags flags,
1216 const sigc::slot<void>& child_setup,
1217 Glib::Pid* child_pid,
1218 int* standard_input,
1219 int* standard_output,
1220 int* standard_error)
1221 {
1222 #ifndef BYPASS_GLIB_SPAWN
1223 Glib::spawn_async_with_pipes(working_directory,
1224 argv,
1225 flags,
1226 child_setup,
1227 child_pid,
1228 standard_input,
1229 standard_output,
1230 standard_error);
1231 #else
1232 my_spawn_async_with_pipes(working_directory,
1233 argv,
1234 static_cast<GSpawnFlags>(flags),
1235 child_setup,
1236 child_pid,
1237 standard_input,
1238 standard_output,
1239 standard_error);
1240 #endif
1241 }
1244 gchar* Inkscape::IO::sanitizeString( gchar const * str )
1245 {
1246 gchar *result = NULL;
1247 if ( str ) {
1248 if ( g_utf8_validate(str, -1, NULL) ) {
1249 result = g_strdup(str);
1250 } else {
1251 guchar scratch[8];
1252 Glib::ustring buf;
1253 guchar const *ptr = (guchar const*)str;
1254 while ( *ptr )
1255 {
1256 if ( *ptr == '\\' )
1257 {
1258 buf.append("\\\\");
1259 } else if ( *ptr < 0x80 ) {
1260 buf += (char)(*ptr);
1261 } else {
1262 g_snprintf((gchar*)scratch, sizeof(scratch), "\\x%02x", *ptr);
1263 buf.append((const char*)scratch);
1264 }
1265 ptr++;
1266 }
1267 result = g_strdup(buf.c_str());
1268 }
1269 }
1270 return result;
1271 }
1273 /*
1274 Local Variables:
1275 mode:c++
1276 c-file-style:"stroustrup"
1277 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1278 indent-tabs-mode:nil
1279 fill-column:99
1280 End:
1281 */
1282 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :