1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 /*
21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GLib Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GLib at ftp://ftp.gtk.org/pub/gtk/.
25 */
26
27 /*
28 * MT safe
29 */
30
31 #include "config.h"
32
33 #include <stdlib.h>
34 #include <stdarg.h>
35 #include <stdio.h>
36 #include <string.h>
37 #ifdef HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #include <signal.h>
41 #include <locale.h>
42 #include <errno.h>
43
44 #include "glib.h"
45 #include "gdebug.h"
46 #include "gprintfint.h"
47 #include "gthreadprivate.h"
48 #include "galias.h"
49
50 #ifdef G_OS_WIN32
51 #include <process.h> /* For getpid() */
52 #include <io.h>
53 # define STRICT /* Strict typing, please */
54 # define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */
55 # include <windows.h>
56 # undef STRICT
57 #endif
58
59 /* --- structures --- */
60 typedef struct _GLogDomain GLogDomain;
61 typedef struct _GLogHandler GLogHandler;
62 struct _GLogDomain
63 {
64 gchar *log_domain;
65 GLogLevelFlags fatal_mask;
66 GLogHandler *handlers;
67 GLogDomain *next;
68 };
69 struct _GLogHandler
70 {
71 guint id;
72 GLogLevelFlags log_level;
73 GLogFunc log_func;
74 gpointer data;
75 GLogHandler *next;
76 };
77
78
79 /* --- variables --- */
80 static GMutex *g_messages_lock = NULL;
81 static GLogDomain *g_log_domains = NULL;
82 static GLogLevelFlags g_log_always_fatal = G_LOG_FATAL_MASK;
83 static GPrintFunc glib_print_func = NULL;
84 static GPrintFunc glib_printerr_func = NULL;
85 static GPrivate *g_log_depth = NULL;
86 static GLogLevelFlags g_log_msg_prefix = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_DEBUG;
87 static GLogFunc default_log_func = g_log_default_handler;
88 static gpointer default_log_data = NULL;
89
90 /* --- functions --- */
91 #ifdef G_OS_WIN32
92 # define STRICT
93 # include <windows.h>
94 # undef STRICT
95 static gboolean win32_keep_fatal_message = FALSE;
96
97 /* This default message will usually be overwritten. */
98 /* Yes, a fixed size buffer is bad. So sue me. But g_error() is never
99 * called with huge strings, is it?
100 */
101 static gchar fatal_msg_buf[1000] = "Unspecified fatal error encountered, aborting.";
102 static gchar *fatal_msg_ptr = fatal_msg_buf;
103
104 #undef write
105 static inline int
dowrite(int fd,const void * buf,unsigned int len)106 dowrite (int fd,
107 const void *buf,
108 unsigned int len)
109 {
110 if (win32_keep_fatal_message)
111 {
112 memcpy (fatal_msg_ptr, buf, len);
113 fatal_msg_ptr += len;
114 *fatal_msg_ptr = 0;
115 return len;
116 }
117
118 write (fd, buf, len);
119
120 return len;
121 }
122 #define write(fd, buf, len) dowrite(fd, buf, len)
123
124 #endif
125
126 static void
write_string(int fd,const gchar * string)127 write_string (int fd,
128 const gchar *string)
129 {
130 write (fd, string, strlen (string));
131 }
132
133 static void
g_messages_prefixed_init(void)134 g_messages_prefixed_init (void)
135 {
136 static gboolean initialized = FALSE;
137
138 if (!initialized)
139 {
140 const gchar *val;
141
142 initialized = TRUE;
143 val = g_getenv ("G_MESSAGES_PREFIXED");
144
145 if (val)
146 {
147 const GDebugKey keys[] = {
148 { "error", G_LOG_LEVEL_ERROR },
149 { "critical", G_LOG_LEVEL_CRITICAL },
150 { "warning", G_LOG_LEVEL_WARNING },
151 { "message", G_LOG_LEVEL_MESSAGE },
152 { "info", G_LOG_LEVEL_INFO },
153 { "debug", G_LOG_LEVEL_DEBUG }
154 };
155
156 g_log_msg_prefix = g_parse_debug_string (val, keys, G_N_ELEMENTS (keys));
157 }
158 }
159 }
160
161 static GLogDomain*
g_log_find_domain_L(const gchar * log_domain)162 g_log_find_domain_L (const gchar *log_domain)
163 {
164 register GLogDomain *domain;
165
166 domain = g_log_domains;
167 while (domain)
168 {
169 if (strcmp (domain->log_domain, log_domain) == 0)
170 return domain;
171 domain = domain->next;
172 }
173 return NULL;
174 }
175
176 static GLogDomain*
g_log_domain_new_L(const gchar * log_domain)177 g_log_domain_new_L (const gchar *log_domain)
178 {
179 register GLogDomain *domain;
180
181 domain = g_new (GLogDomain, 1);
182 domain->log_domain = g_strdup (log_domain);
183 domain->fatal_mask = G_LOG_FATAL_MASK;
184 domain->handlers = NULL;
185
186 domain->next = g_log_domains;
187 g_log_domains = domain;
188
189 return domain;
190 }
191
192 static void
g_log_domain_check_free_L(GLogDomain * domain)193 g_log_domain_check_free_L (GLogDomain *domain)
194 {
195 if (domain->fatal_mask == G_LOG_FATAL_MASK &&
196 domain->handlers == NULL)
197 {
198 register GLogDomain *last, *work;
199
200 last = NULL;
201
202 work = g_log_domains;
203 while (work)
204 {
205 if (work == domain)
206 {
207 if (last)
208 last->next = domain->next;
209 else
210 g_log_domains = domain->next;
211 g_free (domain->log_domain);
212 g_free (domain);
213 break;
214 }
215 last = work;
216 work = last->next;
217 }
218 }
219 }
220
221 static GLogFunc
g_log_domain_get_handler_L(GLogDomain * domain,GLogLevelFlags log_level,gpointer * data)222 g_log_domain_get_handler_L (GLogDomain *domain,
223 GLogLevelFlags log_level,
224 gpointer *data)
225 {
226 if (domain && log_level)
227 {
228 register GLogHandler *handler;
229
230 handler = domain->handlers;
231 while (handler)
232 {
233 if ((handler->log_level & log_level) == log_level)
234 {
235 *data = handler->data;
236 return handler->log_func;
237 }
238 handler = handler->next;
239 }
240 }
241
242 *data = default_log_data;
243 return default_log_func;
244 }
245
246 GLogLevelFlags
g_log_set_always_fatal(GLogLevelFlags fatal_mask)247 g_log_set_always_fatal (GLogLevelFlags fatal_mask)
248 {
249 GLogLevelFlags old_mask;
250
251 /* restrict the global mask to levels that are known to glib
252 * since this setting applies to all domains
253 */
254 fatal_mask &= (1 << G_LOG_LEVEL_USER_SHIFT) - 1;
255 /* force errors to be fatal */
256 fatal_mask |= G_LOG_LEVEL_ERROR;
257 /* remove bogus flag */
258 fatal_mask &= ~G_LOG_FLAG_FATAL;
259
260 g_mutex_lock (g_messages_lock);
261 old_mask = g_log_always_fatal;
262 g_log_always_fatal = fatal_mask;
263 g_mutex_unlock (g_messages_lock);
264
265 return old_mask;
266 }
267
268 GLogLevelFlags
g_log_set_fatal_mask(const gchar * log_domain,GLogLevelFlags fatal_mask)269 g_log_set_fatal_mask (const gchar *log_domain,
270 GLogLevelFlags fatal_mask)
271 {
272 GLogLevelFlags old_flags;
273 register GLogDomain *domain;
274
275 if (!log_domain)
276 log_domain = "";
277
278 /* force errors to be fatal */
279 fatal_mask |= G_LOG_LEVEL_ERROR;
280 /* remove bogus flag */
281 fatal_mask &= ~G_LOG_FLAG_FATAL;
282
283 g_mutex_lock (g_messages_lock);
284
285 domain = g_log_find_domain_L (log_domain);
286 if (!domain)
287 domain = g_log_domain_new_L (log_domain);
288 old_flags = domain->fatal_mask;
289
290 domain->fatal_mask = fatal_mask;
291 g_log_domain_check_free_L (domain);
292
293 g_mutex_unlock (g_messages_lock);
294
295 return old_flags;
296 }
297
298 guint
g_log_set_handler(const gchar * log_domain,GLogLevelFlags log_levels,GLogFunc log_func,gpointer user_data)299 g_log_set_handler (const gchar *log_domain,
300 GLogLevelFlags log_levels,
301 GLogFunc log_func,
302 gpointer user_data)
303 {
304 static guint handler_id = 0;
305 GLogDomain *domain;
306 GLogHandler *handler;
307
308 g_return_val_if_fail ((log_levels & G_LOG_LEVEL_MASK) != 0, 0);
309 g_return_val_if_fail (log_func != NULL, 0);
310
311 if (!log_domain)
312 log_domain = "";
313
314 handler = g_new (GLogHandler, 1);
315
316 g_mutex_lock (g_messages_lock);
317
318 domain = g_log_find_domain_L (log_domain);
319 if (!domain)
320 domain = g_log_domain_new_L (log_domain);
321
322 handler->id = ++handler_id;
323 handler->log_level = log_levels;
324 handler->log_func = log_func;
325 handler->data = user_data;
326 handler->next = domain->handlers;
327 domain->handlers = handler;
328
329 g_mutex_unlock (g_messages_lock);
330
331 return handler_id;
332 }
333
334 GLogFunc
g_log_set_default_handler(GLogFunc log_func,gpointer user_data)335 g_log_set_default_handler (GLogFunc log_func,
336 gpointer user_data)
337 {
338 GLogFunc old_log_func;
339
340 g_mutex_lock (g_messages_lock);
341 old_log_func = default_log_func;
342 default_log_func = log_func;
343 default_log_data = user_data;
344 g_mutex_unlock (g_messages_lock);
345
346 return old_log_func;
347 }
348
349 void
g_log_remove_handler(const gchar * log_domain,guint handler_id)350 g_log_remove_handler (const gchar *log_domain,
351 guint handler_id)
352 {
353 register GLogDomain *domain;
354
355 g_return_if_fail (handler_id > 0);
356
357 if (!log_domain)
358 log_domain = "";
359
360 g_mutex_lock (g_messages_lock);
361 domain = g_log_find_domain_L (log_domain);
362 if (domain)
363 {
364 GLogHandler *work, *last;
365
366 last = NULL;
367 work = domain->handlers;
368 while (work)
369 {
370 if (work->id == handler_id)
371 {
372 if (last)
373 last->next = work->next;
374 else
375 domain->handlers = work->next;
376 g_log_domain_check_free_L (domain);
377 g_mutex_unlock (g_messages_lock);
378 g_free (work);
379 return;
380 }
381 last = work;
382 work = last->next;
383 }
384 }
385 g_mutex_unlock (g_messages_lock);
386 g_warning ("%s: could not find handler with id `%d' for domain \"%s\"",
387 G_STRLOC, handler_id, log_domain);
388 }
389
390 void
g_logv(const gchar * log_domain,GLogLevelFlags log_level,const gchar * format,va_list args1)391 g_logv (const gchar *log_domain,
392 GLogLevelFlags log_level,
393 const gchar *format,
394 va_list args1)
395 {
396 gboolean was_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
397 gboolean was_recursion = (log_level & G_LOG_FLAG_RECURSION) != 0;
398 gint i;
399
400 log_level &= G_LOG_LEVEL_MASK;
401 if (!log_level)
402 return;
403
404 for (i = g_bit_nth_msf (log_level, -1); i >= 0; i = g_bit_nth_msf (log_level, i))
405 {
406 register GLogLevelFlags test_level;
407
408 test_level = 1 << i;
409 if (log_level & test_level)
410 {
411 guint depth = GPOINTER_TO_UINT (g_private_get (g_log_depth));
412 GLogDomain *domain;
413 GLogFunc log_func;
414 GLogLevelFlags domain_fatal_mask;
415 gpointer data = NULL;
416
417 if (was_fatal)
418 test_level |= G_LOG_FLAG_FATAL;
419 if (was_recursion)
420 test_level |= G_LOG_FLAG_RECURSION;
421
422 /* check recursion and lookup handler */
423 g_mutex_lock (g_messages_lock);
424 domain = g_log_find_domain_L (log_domain ? log_domain : "");
425 if (depth)
426 test_level |= G_LOG_FLAG_RECURSION;
427 depth++;
428 domain_fatal_mask = domain ? domain->fatal_mask : G_LOG_FATAL_MASK;
429 if ((domain_fatal_mask | g_log_always_fatal) & test_level)
430 test_level |= G_LOG_FLAG_FATAL;
431 if (test_level & G_LOG_FLAG_RECURSION)
432 log_func = _g_log_fallback_handler;
433 else
434 log_func = g_log_domain_get_handler_L (domain, test_level, &data);
435 domain = NULL;
436 g_mutex_unlock (g_messages_lock);
437
438 g_private_set (g_log_depth, GUINT_TO_POINTER (depth));
439
440 /* had to defer debug initialization until we can keep track of recursion */
441 if (!(test_level & G_LOG_FLAG_RECURSION) && !_g_debug_initialized)
442 {
443 GLogLevelFlags orig_test_level = test_level;
444
445 _g_debug_init ();
446 if ((domain_fatal_mask | g_log_always_fatal) & test_level)
447 test_level |= G_LOG_FLAG_FATAL;
448 if (test_level != orig_test_level)
449 {
450 /* need a relookup, not nice, but not too bad either */
451 g_mutex_lock (g_messages_lock);
452 domain = g_log_find_domain_L (log_domain ? log_domain : "");
453 log_func = g_log_domain_get_handler_L (domain, test_level, &data);
454 domain = NULL;
455 g_mutex_unlock (g_messages_lock);
456 }
457 }
458
459 if (test_level & G_LOG_FLAG_RECURSION)
460 {
461 /* we use a stack buffer of fixed size, since we're likely
462 * in an out-of-memory situation
463 */
464 gchar buffer[1025];
465 gsize size;
466 va_list args2;
467
468 G_VA_COPY (args2, args1);
469 size = _g_vsnprintf (buffer, 1024, format, args2);
470 va_end (args2);
471
472 log_func (log_domain, test_level, buffer, data);
473 }
474 else
475 {
476 gchar *msg;
477 va_list args2;
478
479 G_VA_COPY (args2, args1);
480 msg = g_strdup_vprintf (format, args2);
481 va_end (args2);
482
483 log_func (log_domain, test_level, msg, data);
484
485 g_free (msg);
486 }
487
488 if (test_level & G_LOG_FLAG_FATAL)
489 {
490 #ifdef G_OS_WIN32
491 gchar *locale_msg = g_locale_from_utf8 (fatal_msg_buf, -1, NULL, NULL, NULL);
492
493 MessageBox (NULL, locale_msg, NULL,
494 MB_ICONERROR|MB_SETFOREGROUND);
495 if (IsDebuggerPresent () && !(test_level & G_LOG_FLAG_RECURSION))
496 G_BREAKPOINT ();
497 else
498 abort ();
499 #else
500 #if defined (G_ENABLE_DEBUG) && defined (SIGTRAP)
501 if (!(test_level & G_LOG_FLAG_RECURSION))
502 G_BREAKPOINT ();
503 else
504 abort ();
505 #else /* !G_ENABLE_DEBUG || !SIGTRAP */
506 abort ();
507 #endif /* !G_ENABLE_DEBUG || !SIGTRAP */
508 #endif /* !G_OS_WIN32 */
509 }
510
511 depth--;
512 g_private_set (g_log_depth, GUINT_TO_POINTER (depth));
513 }
514 }
515 }
516
517 void
g_log(const gchar * log_domain,GLogLevelFlags log_level,const gchar * format,...)518 g_log (const gchar *log_domain,
519 GLogLevelFlags log_level,
520 const gchar *format,
521 ...)
522 {
523 va_list args;
524
525 va_start (args, format);
526 g_logv (log_domain, log_level, format, args);
527 va_end (args);
528 }
529
530 void
g_return_if_fail_warning(const char * log_domain,const char * pretty_function,const char * expression)531 g_return_if_fail_warning (const char *log_domain,
532 const char *pretty_function,
533 const char *expression)
534 {
535 /*
536 * Omit the prefix used by the PLT-reduction
537 * technique used in GTK+.
538 */
539 if (g_str_has_prefix (pretty_function, "IA__"))
540 pretty_function += 4;
541 g_log (log_domain,
542 G_LOG_LEVEL_CRITICAL,
543 "%s: assertion `%s' failed",
544 pretty_function,
545 expression);
546 }
547
548 void
g_warn_message(const char * domain,const char * file,int line,const char * func,const char * warnexpr)549 g_warn_message (const char *domain,
550 const char *file,
551 int line,
552 const char *func,
553 const char *warnexpr)
554 {
555 char *s, lstr[32];
556 g_snprintf (lstr, 32, "%d", line);
557 if (warnexpr)
558 s = g_strconcat ("(", file, ":", lstr, "):",
559 func, func[0] ? ":" : "",
560 " runtime check failed: (", warnexpr, ")", NULL);
561 else
562 s = g_strconcat ("(", file, ":", lstr, "):",
563 func, func[0] ? ":" : "",
564 " ", "code should not be reached", NULL);
565 g_log (domain, G_LOG_LEVEL_WARNING, "%s", s);
566 g_free (s);
567 }
568
569 void
g_assert_warning(const char * log_domain,const char * file,const int line,const char * pretty_function,const char * expression)570 g_assert_warning (const char *log_domain,
571 const char *file,
572 const int line,
573 const char *pretty_function,
574 const char *expression)
575 {
576 /*
577 * Omit the prefix used by the PLT-reduction
578 * technique used in GTK+.
579 */
580 if (g_str_has_prefix (pretty_function, "IA__"))
581 pretty_function += 4;
582 g_log (log_domain,
583 G_LOG_LEVEL_ERROR,
584 expression
585 ? "file %s: line %d (%s): assertion failed: (%s)"
586 : "file %s: line %d (%s): should not be reached",
587 file,
588 line,
589 pretty_function,
590 expression);
591 abort ();
592 }
593
594 #define CHAR_IS_SAFE(wc) (!((wc < 0x20 && wc != '\t' && wc != '\n' && wc != '\r') || \
595 (wc == 0x7f) || \
596 (wc >= 0x80 && wc < 0xa0)))
597
598 static gchar*
strdup_convert(const gchar * string,const gchar * charset)599 strdup_convert (const gchar *string,
600 const gchar *charset)
601 {
602 if (!g_utf8_validate (string, -1, NULL))
603 {
604 GString *gstring = g_string_new ("[Invalid UTF-8] ");
605 guchar *p;
606
607 for (p = (guchar *)string; *p; p++)
608 {
609 if (CHAR_IS_SAFE(*p) &&
610 !(*p == '\r' && *(p + 1) != '\n') &&
611 *p < 0x80)
612 g_string_append_c (gstring, *p);
613 else
614 g_string_append_printf (gstring, "\\x%02x", (guint)(guchar)*p);
615 }
616
617 return g_string_free (gstring, FALSE);
618 }
619 else
620 {
621 GError *err = NULL;
622
623 gchar *result = g_convert_with_fallback (string, -1, charset, "UTF-8", "?", NULL, NULL, &err);
624 if (result)
625 return result;
626 else
627 {
628 /* Not thread-safe, but doesn't matter if we print the warning twice
629 */
630 static gboolean warned = FALSE;
631 if (!warned)
632 {
633 warned = TRUE;
634 _g_fprintf (stderr, "GLib: Cannot convert message: %s\n", err->message);
635 }
636 g_error_free (err);
637
638 return g_strdup (string);
639 }
640 }
641 }
642
643 /* For a radix of 8 we need at most 3 output bytes for 1 input
644 * byte. Additionally we might need up to 2 output bytes for the
645 * readix prefix and 1 byte for the trailing NULL.
646 */
647 #define FORMAT_UNSIGNED_BUFSIZE ((GLIB_SIZEOF_LONG * 3) + 3)
648
649 static void
format_unsigned(gchar * buf,gulong num,guint radix)650 format_unsigned (gchar *buf,
651 gulong num,
652 guint radix)
653 {
654 gulong tmp;
655 gchar c;
656 gint i, n;
657
658 /* we may not call _any_ GLib functions here (or macros like g_return_if_fail()) */
659
660 if (radix != 8 && radix != 10 && radix != 16)
661 {
662 *buf = '\000';
663 return;
664 }
665
666 if (!num)
667 {
668 *buf++ = '0';
669 *buf = '\000';
670 return;
671 }
672
673 if (radix == 16)
674 {
675 *buf++ = '0';
676 *buf++ = 'x';
677 }
678 else if (radix == 8)
679 {
680 *buf++ = '0';
681 }
682
683 n = 0;
684 tmp = num;
685 while (tmp)
686 {
687 tmp /= radix;
688 n++;
689 }
690
691 i = n;
692
693 /* Again we can't use g_assert; actually this check should _never_ fail. */
694 if (n > FORMAT_UNSIGNED_BUFSIZE - 3)
695 {
696 *buf = '\000';
697 return;
698 }
699
700 while (num)
701 {
702 i--;
703 c = (num % radix);
704 if (c < 10)
705 buf[i] = c + '0';
706 else
707 buf[i] = c + 'a' - 10;
708 num /= radix;
709 }
710
711 buf[n] = '\000';
712 }
713
714 /* string size big enough to hold level prefix */
715 #define STRING_BUFFER_SIZE (FORMAT_UNSIGNED_BUFSIZE + 32)
716
717 #define ALERT_LEVELS (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING)
718
719 static int
mklevel_prefix(gchar level_prefix[STRING_BUFFER_SIZE],GLogLevelFlags log_level)720 mklevel_prefix (gchar level_prefix[STRING_BUFFER_SIZE],
721 GLogLevelFlags log_level)
722 {
723 gboolean to_stdout = TRUE;
724
725 /* we may not call _any_ GLib functions here */
726
727 switch (log_level & G_LOG_LEVEL_MASK)
728 {
729 case G_LOG_LEVEL_ERROR:
730 strcpy (level_prefix, "ERROR");
731 to_stdout = FALSE;
732 break;
733 case G_LOG_LEVEL_CRITICAL:
734 strcpy (level_prefix, "CRITICAL");
735 to_stdout = FALSE;
736 break;
737 case G_LOG_LEVEL_WARNING:
738 strcpy (level_prefix, "WARNING");
739 to_stdout = FALSE;
740 break;
741 case G_LOG_LEVEL_MESSAGE:
742 strcpy (level_prefix, "Message");
743 to_stdout = FALSE;
744 break;
745 case G_LOG_LEVEL_INFO:
746 strcpy (level_prefix, "INFO");
747 break;
748 case G_LOG_LEVEL_DEBUG:
749 strcpy (level_prefix, "DEBUG");
750 break;
751 default:
752 if (log_level)
753 {
754 strcpy (level_prefix, "LOG-");
755 format_unsigned (level_prefix + 4, log_level & G_LOG_LEVEL_MASK, 16);
756 }
757 else
758 strcpy (level_prefix, "LOG");
759 break;
760 }
761 if (log_level & G_LOG_FLAG_RECURSION)
762 strcat (level_prefix, " (recursed)");
763 if (log_level & ALERT_LEVELS)
764 strcat (level_prefix, " **");
765
766 #ifdef G_OS_WIN32
767 win32_keep_fatal_message = (log_level & G_LOG_FLAG_FATAL) != 0;
768 #endif
769 return to_stdout ? 1 : 2;
770 }
771
772 void
_g_log_fallback_handler(const gchar * log_domain,GLogLevelFlags log_level,const gchar * message,gpointer unused_data)773 _g_log_fallback_handler (const gchar *log_domain,
774 GLogLevelFlags log_level,
775 const gchar *message,
776 gpointer unused_data)
777 {
778 gchar level_prefix[STRING_BUFFER_SIZE];
779 #ifndef G_OS_WIN32
780 gchar pid_string[FORMAT_UNSIGNED_BUFSIZE];
781 #endif
782 gboolean is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
783 int fd;
784
785 /* we can not call _any_ GLib functions in this fallback handler,
786 * which is why we skip UTF-8 conversion, etc.
787 * since we either recursed or ran out of memory, we're in a pretty
788 * pathologic situation anyways, what we can do is giving the
789 * the process ID unconditionally however.
790 */
791
792 fd = mklevel_prefix (level_prefix, log_level);
793 if (!message)
794 message = "(NULL) message";
795
796 #ifndef G_OS_WIN32
797 format_unsigned (pid_string, getpid (), 10);
798 #endif
799
800 if (log_domain)
801 write_string (fd, "\n");
802 else
803 write_string (fd, "\n** ");
804
805 #ifndef G_OS_WIN32
806 write_string (fd, "(process:");
807 write_string (fd, pid_string);
808 write_string (fd, "): ");
809 #endif
810
811 if (log_domain)
812 {
813 write_string (fd, log_domain);
814 write_string (fd, "-");
815 }
816 write_string (fd, level_prefix);
817 write_string (fd, ": ");
818 write_string (fd, message);
819 if (is_fatal)
820 write_string (fd, "\naborting...\n");
821 else
822 write_string (fd, "\n");
823 }
824
825 static void
escape_string(GString * string)826 escape_string (GString *string)
827 {
828 const char *p = string->str;
829 gunichar wc;
830
831 while (p < string->str + string->len)
832 {
833 gboolean safe;
834
835 wc = g_utf8_get_char_validated (p, -1);
836 if (wc == (gunichar)-1 || wc == (gunichar)-2)
837 {
838 gchar *tmp;
839 guint pos;
840
841 pos = p - string->str;
842
843 /* Emit invalid UTF-8 as hex escapes
844 */
845 tmp = g_strdup_printf ("\\x%02x", (guint)(guchar)*p);
846 g_string_erase (string, pos, 1);
847 g_string_insert (string, pos, tmp);
848
849 p = string->str + (pos + 4); /* Skip over escape sequence */
850
851 g_free (tmp);
852 continue;
853 }
854 if (wc == '\r')
855 {
856 safe = *(p + 1) == '\n';
857 }
858 else
859 {
860 safe = CHAR_IS_SAFE (wc);
861 }
862
863 if (!safe)
864 {
865 gchar *tmp;
866 guint pos;
867
868 pos = p - string->str;
869
870 /* Largest char we escape is 0x0a, so we don't have to worry
871 * about 8-digit \Uxxxxyyyy
872 */
873 tmp = g_strdup_printf ("\\u%04x", wc);
874 g_string_erase (string, pos, g_utf8_next_char (p) - p);
875 g_string_insert (string, pos, tmp);
876 g_free (tmp);
877
878 p = string->str + (pos + 6); /* Skip over escape sequence */
879 }
880 else
881 p = g_utf8_next_char (p);
882 }
883 }
884
885 void
g_log_default_handler(const gchar * log_domain,GLogLevelFlags log_level,const gchar * message,gpointer unused_data)886 g_log_default_handler (const gchar *log_domain,
887 GLogLevelFlags log_level,
888 const gchar *message,
889 gpointer unused_data)
890 {
891 gboolean is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0;
892 gchar level_prefix[STRING_BUFFER_SIZE], *string;
893 GString *gstring;
894 int fd;
895
896 /* we can be called externally with recursion for whatever reason */
897 if (log_level & G_LOG_FLAG_RECURSION)
898 {
899 _g_log_fallback_handler (log_domain, log_level, message, unused_data);
900 return;
901 }
902
903 g_messages_prefixed_init ();
904
905 fd = mklevel_prefix (level_prefix, log_level);
906
907 gstring = g_string_new (NULL);
908 if (log_level & ALERT_LEVELS)
909 g_string_append (gstring, "\n");
910 if (!log_domain)
911 g_string_append (gstring, "** ");
912
913 if ((g_log_msg_prefix & log_level) == log_level)
914 {
915 const gchar *prg_name = g_get_prgname ();
916
917 if (!prg_name)
918 g_string_append_printf (gstring, "(process:%lu): ", (gulong)getpid ());
919 else
920 g_string_append_printf (gstring, "(%s:%lu): ", prg_name, (gulong)getpid ());
921 }
922
923 if (log_domain)
924 {
925 g_string_append (gstring, log_domain);
926 g_string_append_c (gstring, '-');
927 }
928 g_string_append (gstring, level_prefix);
929
930 g_string_append (gstring, ": ");
931 if (!message)
932 g_string_append (gstring, "(NULL) message");
933 else
934 {
935 GString *msg;
936 const gchar *charset;
937
938 msg = g_string_new (message);
939 escape_string (msg);
940
941 if (g_get_charset (&charset))
942 g_string_append (gstring, msg->str); /* charset is UTF-8 already */
943 else
944 {
945 string = strdup_convert (msg->str, charset);
946 g_string_append (gstring, string);
947 g_free (string);
948 }
949
950 g_string_free (msg, TRUE);
951 }
952 if (is_fatal)
953 g_string_append (gstring, "\naborting...\n");
954 else
955 g_string_append (gstring, "\n");
956
957 string = g_string_free (gstring, FALSE);
958
959 write_string (fd, string);
960 g_free (string);
961 }
962
963 GPrintFunc
g_set_print_handler(GPrintFunc func)964 g_set_print_handler (GPrintFunc func)
965 {
966 GPrintFunc old_print_func;
967
968 g_mutex_lock (g_messages_lock);
969 old_print_func = glib_print_func;
970 glib_print_func = func;
971 g_mutex_unlock (g_messages_lock);
972
973 return old_print_func;
974 }
975
976 void
g_print(const gchar * format,...)977 g_print (const gchar *format,
978 ...)
979 {
980 va_list args;
981 gchar *string;
982 GPrintFunc local_glib_print_func;
983
984 g_return_if_fail (format != NULL);
985
986 va_start (args, format);
987 string = g_strdup_vprintf (format, args);
988 va_end (args);
989
990 g_mutex_lock (g_messages_lock);
991 local_glib_print_func = glib_print_func;
992 g_mutex_unlock (g_messages_lock);
993
994 if (local_glib_print_func)
995 local_glib_print_func (string);
996 else
997 {
998 const gchar *charset;
999
1000 if (g_get_charset (&charset))
1001 fputs (string, stdout); /* charset is UTF-8 already */
1002 else
1003 {
1004 gchar *lstring = strdup_convert (string, charset);
1005
1006 fputs (lstring, stdout);
1007 g_free (lstring);
1008 }
1009 fflush (stdout);
1010 }
1011 g_free (string);
1012 }
1013
1014 GPrintFunc
g_set_printerr_handler(GPrintFunc func)1015 g_set_printerr_handler (GPrintFunc func)
1016 {
1017 GPrintFunc old_printerr_func;
1018
1019 g_mutex_lock (g_messages_lock);
1020 old_printerr_func = glib_printerr_func;
1021 glib_printerr_func = func;
1022 g_mutex_unlock (g_messages_lock);
1023
1024 return old_printerr_func;
1025 }
1026
1027 void
g_printerr(const gchar * format,...)1028 g_printerr (const gchar *format,
1029 ...)
1030 {
1031 va_list args;
1032 gchar *string;
1033 GPrintFunc local_glib_printerr_func;
1034
1035 g_return_if_fail (format != NULL);
1036
1037 va_start (args, format);
1038 string = g_strdup_vprintf (format, args);
1039 va_end (args);
1040
1041 g_mutex_lock (g_messages_lock);
1042 local_glib_printerr_func = glib_printerr_func;
1043 g_mutex_unlock (g_messages_lock);
1044
1045 if (local_glib_printerr_func)
1046 local_glib_printerr_func (string);
1047 else
1048 {
1049 const gchar *charset;
1050
1051 if (g_get_charset (&charset))
1052 fputs (string, stderr); /* charset is UTF-8 already */
1053 else
1054 {
1055 gchar *lstring = strdup_convert (string, charset);
1056
1057 fputs (lstring, stderr);
1058 g_free (lstring);
1059 }
1060 fflush (stderr);
1061 }
1062 g_free (string);
1063 }
1064
1065 gsize
g_printf_string_upper_bound(const gchar * format,va_list args)1066 g_printf_string_upper_bound (const gchar *format,
1067 va_list args)
1068 {
1069 gchar c;
1070 return _g_vsnprintf (&c, 1, format, args) + 1;
1071 }
1072
1073 void
_g_messages_thread_init_nomessage(void)1074 _g_messages_thread_init_nomessage (void)
1075 {
1076 g_messages_lock = g_mutex_new ();
1077 g_log_depth = g_private_new (NULL);
1078 g_messages_prefixed_init ();
1079 _g_debug_init ();
1080 }
1081
1082 gboolean _g_debug_initialized = FALSE;
1083 guint _g_debug_flags = 0;
1084
1085 void
_g_debug_init(void)1086 _g_debug_init (void)
1087 {
1088 const gchar *val;
1089
1090 _g_debug_initialized = TRUE;
1091
1092 val = g_getenv ("G_DEBUG");
1093 if (val != NULL)
1094 {
1095 const GDebugKey keys[] = {
1096 {"fatal_warnings", G_DEBUG_FATAL_WARNINGS},
1097 {"fatal_criticals", G_DEBUG_FATAL_CRITICALS}
1098 };
1099
1100 _g_debug_flags = g_parse_debug_string (val, keys, G_N_ELEMENTS (keys));
1101 }
1102
1103 if (_g_debug_flags & G_DEBUG_FATAL_WARNINGS)
1104 {
1105 GLogLevelFlags fatal_mask;
1106
1107 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
1108 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
1109 g_log_set_always_fatal (fatal_mask);
1110 }
1111
1112 if (_g_debug_flags & G_DEBUG_FATAL_CRITICALS)
1113 {
1114 GLogLevelFlags fatal_mask;
1115
1116 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
1117 fatal_mask |= G_LOG_LEVEL_CRITICAL;
1118 g_log_set_always_fatal (fatal_mask);
1119 }
1120 }
1121
1122 #define __G_MESSAGES_C__
1123 #include "galiasdef.c"
1124