1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
|
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2011 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Marcus Boerger <helly@php.net> |
| Sterling Hughes <sterling@php.net> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
#include "zend_API.h"
#include "zend_builtin_functions.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"
#include "zend_vm.h"
zend_class_entry *default_exception_ce;
zend_class_entry *error_exception_ce;
static zend_object_handlers default_exception_handlers;
ZEND_API void (*zend_throw_exception_hook)(zval *ex TSRMLS_DC);
void zend_exception_set_previous(zval *exception, zval *add_previous TSRMLS_DC)
{
zval *previous;
if (exception == add_previous || !add_previous || !exception) {
return;
}
if (Z_TYPE_P(add_previous) != IS_OBJECT && !instanceof_function(Z_OBJCE_P(add_previous), default_exception_ce TSRMLS_CC)) {
zend_error(E_ERROR, "Cannot set non exception as previous exception");
return;
}
while (exception && exception != add_previous && Z_OBJ_HANDLE_P(exception) != Z_OBJ_HANDLE_P(add_previous)) {
previous = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 1 TSRMLS_CC);
if (Z_TYPE_P(previous) == IS_NULL) {
zend_update_property(default_exception_ce, exception, "previous", sizeof("previous")-1, add_previous TSRMLS_CC);
Z_DELREF_P(add_previous);
return;
}
exception = previous;
}
}
void zend_exception_save(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
}
if (EG(exception)) {
EG(prev_exception) = EG(exception);
}
EG(exception) = NULL;
}
/* }}} */
void zend_exception_restore(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
if (EG(exception)) {
zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
} else {
EG(exception) = EG(prev_exception);
}
EG(prev_exception) = NULL;
}
}
/* }}} */
void zend_throw_exception_internal(zval *exception TSRMLS_DC) /* {{{ */
{
if (exception != NULL) {
zval *previous = EG(exception);
zend_exception_set_previous(exception, EG(exception) TSRMLS_CC);
EG(exception) = exception;
if (previous) {
return;
}
}
if (!EG(current_execute_data)) {
zend_error(E_ERROR, "Exception thrown without a stack frame");
}
if (zend_throw_exception_hook) {
zend_throw_exception_hook(exception TSRMLS_CC);
}
if (EG(current_execute_data)->opline == NULL ||
(EG(current_execute_data)->opline+1)->opcode == ZEND_HANDLE_EXCEPTION) {
/* no need to rethrow the exception */
return;
}
EG(opline_before_exception) = EG(current_execute_data)->opline;
EG(current_execute_data)->opline = EG(exception_op);
}
/* }}} */
ZEND_API void zend_clear_exception(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
zval_ptr_dtor(&EG(prev_exception));
EG(prev_exception) = NULL;
}
if (!EG(exception)) {
return;
}
zval_ptr_dtor(&EG(exception));
EG(exception) = NULL;
EG(current_execute_data)->opline = EG(opline_before_exception);
#if ZEND_DEBUG
EG(opline_before_exception) = NULL;
#endif
}
/* }}} */
static zend_object_value zend_default_exception_new_ex(zend_class_entry *class_type, int skip_top_traces TSRMLS_DC) /* {{{ */
{
zval tmp, obj;
zend_object *object;
zval *trace;
Z_OBJVAL(obj) = zend_objects_new(&object, class_type TSRMLS_CC);
Z_OBJ_HT(obj) = &default_exception_handlers;
ALLOC_HASHTABLE(object->properties);
zend_hash_init(object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
zend_hash_copy(object->properties, &class_type->default_properties, zval_copy_property_ctor(class_type), (void *) &tmp, sizeof(zval *));
ALLOC_ZVAL(trace);
Z_UNSET_ISREF_P(trace);
Z_SET_REFCOUNT_P(trace, 0);
zend_fetch_debug_backtrace(trace, skip_top_traces, 0 TSRMLS_CC);
zend_update_property_string(default_exception_ce, &obj, "file", sizeof("file")-1, zend_get_executed_filename(TSRMLS_C) TSRMLS_CC);
zend_update_property_long(default_exception_ce, &obj, "line", sizeof("line")-1, zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
zend_update_property(default_exception_ce, &obj, "trace", sizeof("trace")-1, trace TSRMLS_CC);
return Z_OBJVAL(obj);
}
/* }}} */
static zend_object_value zend_default_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
{
return zend_default_exception_new_ex(class_type, 0 TSRMLS_CC);
}
/* }}} */
static zend_object_value zend_error_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
{
return zend_default_exception_new_ex(class_type, 2 TSRMLS_CC);
}
/* }}} */
/* {{{ proto Exception Exception::__clone()
Clone the exception object */
ZEND_METHOD(exception, __clone)
{
/* Should never be executable */
zend_throw_exception(NULL, "Cannot clone object using __clone()", 0 TSRMLS_CC);
}
/* }}} */
/* {{{ proto Exception::__construct(string message, int code [, Exception previous])
Exception constructor */
ZEND_METHOD(exception, __construct)
{
char *message = NULL;
long code = 0;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS(), message_len;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|slO!", &message, &message_len, &code, &previous, default_exception_ce) == FAILURE) {
zend_error(E_ERROR, "Wrong parameters for Exception([string $exception [, long $code [, Exception $previous = NULL]]])");
}
object = getThis();
if (message) {
zend_update_property_string(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
}
if (previous) {
zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
}
}
/* }}} */
/* {{{ proto ErrorException::__construct(string message, int code, int severity [, string filename [, int lineno [, Exception previous]]])
ErrorException constructor */
ZEND_METHOD(error_exception, __construct)
{
char *message = NULL, *filename = NULL;
long code = 0, severity = E_ERROR, lineno;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS(), message_len, filename_len;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|sllslO!", &message, &message_len, &code, &severity, &filename, &filename_len, &lineno, &previous, default_exception_ce) == FAILURE) {
zend_error(E_ERROR, "Wrong parameters for ErrorException([string $exception [, long $code, [ long $severity, [ string $filename, [ long $lineno [, Exception $previous = NULL]]]]]])");
}
object = getThis();
if (message) {
zend_update_property_string(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
}
if (previous) {
zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
}
zend_update_property_long(default_exception_ce, object, "severity", sizeof("severity")-1, severity TSRMLS_CC);
if (argc >= 4) {
zend_update_property_string(default_exception_ce, object, "file", sizeof("file")-1, filename TSRMLS_CC);
if (argc < 5) {
lineno = 0; /* invalidate lineno */
}
zend_update_property_long(default_exception_ce, object, "line", sizeof("line")-1, lineno TSRMLS_CC);
}
}
/* }}} */
#define DEFAULT_0_PARAMS \
if (zend_parse_parameters_none() == FAILURE) { \
return; \
}
static void _default_exception_get_entry(zval *object, char *name, int name_len, zval *return_value TSRMLS_DC) /* {{{ */
{
zval *value;
value = zend_read_property(default_exception_ce, object, name, name_len, 0 TSRMLS_CC);
*return_value = *value;
zval_copy_ctor(return_value);
INIT_PZVAL(return_value);
}
/* }}} */
/* {{{ proto string Exception::getFile()
Get the file in which the exception occurred */
ZEND_METHOD(exception, getFile)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "file", sizeof("file")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int Exception::getLine()
Get the line in which the exception occurred */
ZEND_METHOD(exception, getLine)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "line", sizeof("line")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string Exception::getMessage()
Get the exception message */
ZEND_METHOD(exception, getMessage)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "message", sizeof("message")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int Exception::getCode()
Get the exception code */
ZEND_METHOD(exception, getCode)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "code", sizeof("code")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto array Exception::getTrace()
Get the stack trace for the location in which the exception occurred */
ZEND_METHOD(exception, getTrace)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "trace", sizeof("trace")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int ErrorException::getSeverity()
Get the exception severity */
ZEND_METHOD(error_exception, getSeverity)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "severity", sizeof("severity")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ gettraceasstring() macros */
#define TRACE_APPEND_CHR(chr) \
*str = (char*)erealloc(*str, *len + 1 + 1); \
(*str)[(*len)++] = chr
#define TRACE_APPEND_STRL(val, vallen) \
{ \
int l = vallen; \
*str = (char*)erealloc(*str, *len + l + 1); \
memcpy((*str) + *len, val, l); \
*len += l; \
}
#define TRACE_APPEND_STR(val) \
TRACE_APPEND_STRL(val, sizeof(val)-1)
#define TRACE_APPEND_KEY(key) \
if (zend_hash_find(ht, key, sizeof(key), (void**)&tmp) == SUCCESS) { \
TRACE_APPEND_STRL(Z_STRVAL_PP(tmp), Z_STRLEN_PP(tmp)); \
}
/* }}} */
static int _build_trace_args(zval **arg TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char **str;
int *len;
str = va_arg(args, char**);
len = va_arg(args, int*);
/* the trivial way would be to do:
* conver_to_string_ex(arg);
* append it and kill the now tmp arg.
* but that could cause some E_NOTICE and also damn long lines.
*/
switch (Z_TYPE_PP(arg)) {
case IS_NULL:
TRACE_APPEND_STR("NULL, ");
break;
case IS_STRING: {
int l_added;
TRACE_APPEND_CHR('\'');
if (Z_STRLEN_PP(arg) > 15) {
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), 15);
TRACE_APPEND_STR("...', ");
l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
} else {
l_added = Z_STRLEN_PP(arg);
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), l_added);
TRACE_APPEND_STR("', ");
l_added += 3 + 1;
}
while (--l_added) {
if ((*str)[*len - l_added] < 32) {
(*str)[*len - l_added] = '?';
}
}
break;
}
case IS_BOOL:
if (Z_LVAL_PP(arg)) {
TRACE_APPEND_STR("true, ");
} else {
TRACE_APPEND_STR("false, ");
}
break;
case IS_RESOURCE:
TRACE_APPEND_STR("Resource id #");
/* break; */
case IS_LONG: {
long lval = Z_LVAL_PP(arg);
char s_tmp[MAX_LENGTH_OF_LONG + 1];
int l_tmp = zend_sprintf(s_tmp, "%ld", lval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_DOUBLE: {
double dval = Z_DVAL_PP(arg);
char *s_tmp;
int l_tmp;
s_tmp = emalloc(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
l_tmp = zend_sprintf(s_tmp, "%.*G", (int) EG(precision), dval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
/* %G already handles removing trailing zeros from the fractional part, yay */
efree(s_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_ARRAY:
TRACE_APPEND_STR("Array, ");
break;
case IS_OBJECT: {
char *class_name;
zend_uint class_name_len;
int dup;
TRACE_APPEND_STR("Object(");
dup = zend_get_object_classname(*arg, &class_name, &class_name_len TSRMLS_CC);
TRACE_APPEND_STRL(class_name, class_name_len);
if(!dup) {
efree(class_name);
}
TRACE_APPEND_STR("), ");
break;
}
default:
break;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
static int _build_trace_string(zval **frame TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char *s_tmp, **str;
int *len, *num;
long line;
HashTable *ht = Z_ARRVAL_PP(frame);
zval **file, **tmp;
str = va_arg(args, char**);
len = va_arg(args, int*);
num = va_arg(args, int*);
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 1 + 1);
sprintf(s_tmp, "#%d ", (*num)++);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
if (zend_hash_find(ht, "file", sizeof("file"), (void**)&file) == SUCCESS) {
if (zend_hash_find(ht, "line", sizeof("line"), (void**)&tmp) == SUCCESS) {
line = Z_LVAL_PP(tmp);
} else {
line = 0;
}
s_tmp = emalloc(Z_STRLEN_PP(file) + MAX_LENGTH_OF_LONG + 4 + 1);
sprintf(s_tmp, "%s(%ld): ", Z_STRVAL_PP(file), line);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
} else {
TRACE_APPEND_STR("[internal function]: ");
}
TRACE_APPEND_KEY("class");
TRACE_APPEND_KEY("type");
TRACE_APPEND_KEY("function");
TRACE_APPEND_CHR('(');
if (zend_hash_find(ht, "args", sizeof("args"), (void**)&tmp) == SUCCESS) {
int last_len = *len;
zend_hash_apply_with_arguments(Z_ARRVAL_PP(tmp) TSRMLS_CC, (apply_func_args_t)_build_trace_args, 2, str, len);
if (last_len != *len) {
*len -= 2; /* remove last ', ' */
}
}
TRACE_APPEND_STR(")\n");
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
/* {{{ proto string Exception::getTraceAsString()
Obtain the backtrace for the exception as a string (instead of an array) */
ZEND_METHOD(exception, getTraceAsString)
{
zval *trace;
char *res, **str, *s_tmp;
int res_len = 0, *len = &res_len, num = 0;
DEFAULT_0_PARAMS;
res = estrdup("");
str = &res;
trace = zend_read_property(default_exception_ce, getThis(), "trace", sizeof("trace")-1, 1 TSRMLS_CC);
zend_hash_apply_with_arguments(Z_ARRVAL_P(trace) TSRMLS_CC, (apply_func_args_t)_build_trace_string, 3, str, len, &num);
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 7 + 1);
sprintf(s_tmp, "#%d {main}", num);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
res[res_len] = '\0';
RETURN_STRINGL(res, res_len, 0);
}
/* }}} */
/* {{{ proto string Exception::getPrevious()
Return previous Exception or NULL. */
ZEND_METHOD(exception, getPrevious)
{
zval *previous;
DEFAULT_0_PARAMS;
previous = zend_read_property(default_exception_ce, getThis(), "previous", sizeof("previous")-1, 1 TSRMLS_CC);
RETURN_ZVAL(previous, 1, 0);
}
int zend_spprintf(char **message, int max_len, char *format, ...) /* {{{ */
{
va_list arg;
int len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
/* {{{ proto string Exception::__toString()
Obtain the string representation of the Exception object */
ZEND_METHOD(exception, __toString)
{
zval message, file, line, *trace, *exception;
char *str, *prev_str;
int len = 0;
zend_fcall_info fci;
zval fname;
DEFAULT_0_PARAMS;
str = estrndup("", 0);
exception = getThis();
ZVAL_STRINGL(&fname, "gettraceasstring", sizeof("gettraceasstring")-1, 1);
while (exception && Z_TYPE_P(exception) == IS_OBJECT) {
prev_str = str;
_default_exception_get_entry(exception, "message", sizeof("message")-1, &message TSRMLS_CC);
_default_exception_get_entry(exception, "file", sizeof("file")-1, &file TSRMLS_CC);
_default_exception_get_entry(exception, "line", sizeof("line")-1, &line TSRMLS_CC);
convert_to_string(&message);
convert_to_string(&file);
convert_to_long(&line);
fci.size = sizeof(fci);
fci.function_table = &Z_OBJCE_P(exception)->function_table;
fci.function_name = &fname;
fci.symbol_table = NULL;
fci.object_ptr = exception;
fci.retval_ptr_ptr = &trace;
fci.param_count = 0;
fci.params = NULL;
fci.no_separation = 1;
zend_call_function(&fci, NULL TSRMLS_CC);
if (Z_TYPE_P(trace) != IS_STRING) {
zval_ptr_dtor(&trace);
trace = NULL;
}
if (Z_STRLEN(message) > 0) {
len = zend_spprintf(&str, 0, "exception '%s' with message '%s' in %s:%ld\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name, Z_STRVAL(message), Z_STRVAL(file), Z_LVAL(line),
(trace && Z_STRLEN_P(trace)) ? Z_STRVAL_P(trace) : "#0 {main}\n",
len ? "\n\nNext " : "", prev_str);
} else {
len = zend_spprintf(&str, 0, "exception '%s' in %s:%ld\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name, Z_STRVAL(file), Z_LVAL(line),
(trace && Z_STRLEN_P(trace)) ? Z_STRVAL_P(trace) : "#0 {main}\n",
len ? "\n\nNext " : "", prev_str);
}
efree(prev_str);
zval_dtor(&message);
zval_dtor(&file);
zval_dtor(&line);
exception = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 0 TSRMLS_CC);
if (trace) {
zval_ptr_dtor(&trace);
}
}
zval_dtor(&fname);
/* We store the result in the private property string so we can access
* the result in uncaught exception handlers without memleaks. */
zend_update_property_string(default_exception_ce, getThis(), "string", sizeof("string")-1, str TSRMLS_CC);
RETURN_STRINGL(str, len, 0);
}
/* }}} */
/* {{{ internal structs */
/* All functions that may be used in uncaught exception handlers must be final
* and must not throw exceptions. Otherwise we would need a facility to handle
* such exceptions in that handler.
* Also all getXY() methods are final because thy serve as read only access to
* their corresponding properties, no more, no less. If after all you need to
* override somthing then it is method __toString().
* And never try to change the state of exceptions and never implement anything
* that gives the user anything to accomplish this.
*/
ZEND_BEGIN_ARG_INFO_EX(arginfo_exception___construct, 0, 0, 0)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, code)
ZEND_ARG_INFO(0, previous)
ZEND_END_ARG_INFO()
const static zend_function_entry default_exception_functions[] = {
ZEND_ME(exception, __clone, NULL, ZEND_ACC_PRIVATE|ZEND_ACC_FINAL)
ZEND_ME(exception, __construct, arginfo_exception___construct, ZEND_ACC_PUBLIC)
ZEND_ME(exception, getMessage, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getCode, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getFile, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getLine, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getTrace, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getPrevious, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getTraceAsString, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, __toString, NULL, 0)
{NULL, NULL, NULL}
};
ZEND_BEGIN_ARG_INFO_EX(arginfo_error_exception___construct, 0, 0, 0)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, code)
ZEND_ARG_INFO(0, severity)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(0, lineno)
ZEND_ARG_INFO(0, previous)
ZEND_END_ARG_INFO()
static const zend_function_entry error_exception_functions[] = {
ZEND_ME(error_exception, __construct, arginfo_error_exception___construct, ZEND_ACC_PUBLIC)
ZEND_ME(error_exception, getSeverity, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
{NULL, NULL, NULL}
};
/* }}} */
void zend_register_default_exception(TSRMLS_D) /* {{{ */
{
zend_class_entry ce;
INIT_CLASS_ENTRY(ce, "Exception", default_exception_functions);
default_exception_ce = zend_register_internal_class(&ce TSRMLS_CC);
default_exception_ce->create_object = zend_default_exception_new;
memcpy(&default_exception_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
default_exception_handlers.clone_obj = NULL;
zend_declare_property_string(default_exception_ce, "message", sizeof("message")-1, "", ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_string(default_exception_ce, "string", sizeof("string")-1, "", ZEND_ACC_PRIVATE TSRMLS_CC);
zend_declare_property_long(default_exception_ce, "code", sizeof("code")-1, 0, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "file", sizeof("file")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "line", sizeof("line")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "trace", sizeof("trace")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "previous", sizeof("previous")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
INIT_CLASS_ENTRY(ce, "ErrorException", error_exception_functions);
error_exception_ce = zend_register_internal_class_ex(&ce, default_exception_ce, NULL TSRMLS_CC);
error_exception_ce->create_object = zend_error_exception_new;
zend_declare_property_long(error_exception_ce, "severity", sizeof("severity")-1, E_ERROR, ZEND_ACC_PROTECTED TSRMLS_CC);
}
/* }}} */
ZEND_API zend_class_entry *zend_exception_get_default(TSRMLS_D) /* {{{ */
{
return default_exception_ce;
}
/* }}} */
ZEND_API zend_class_entry *zend_get_error_exception(TSRMLS_D) /* {{{ */
{
return error_exception_ce;
}
/* }}} */
ZEND_API zval * zend_throw_exception(zend_class_entry *exception_ce, char *message, long code TSRMLS_DC) /* {{{ */
{
zval *ex;
MAKE_STD_ZVAL(ex);
if (exception_ce) {
if (!instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
zend_error(E_NOTICE, "Exceptions must be derived from the Exception base class");
exception_ce = default_exception_ce;
}
} else {
exception_ce = default_exception_ce;
}
object_init_ex(ex, exception_ce);
if (message) {
zend_update_property_string(default_exception_ce, ex, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, ex, "code", sizeof("code")-1, code TSRMLS_CC);
}
zend_throw_exception_internal(ex TSRMLS_CC);
return ex;
}
/* }}} */
ZEND_API zval * zend_throw_exception_ex(zend_class_entry *exception_ce, long code TSRMLS_DC, char *format, ...) /* {{{ */
{
va_list arg;
char *message;
zval *zexception;
va_start(arg, format);
zend_vspprintf(&message, 0, format, arg);
va_end(arg);
zexception = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
efree(message);
return zexception;
}
/* }}} */
ZEND_API zval * zend_throw_error_exception(zend_class_entry *exception_ce, char *message, long code, int severity TSRMLS_DC) /* {{{ */
{
zval *ex = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
zend_update_property_long(default_exception_ce, ex, "severity", sizeof("severity")-1, severity TSRMLS_CC);
return ex;
}
/* }}} */
static void zend_error_va(int type, const char *file, uint lineno, const char *format, ...) /* {{{ */
{
va_list args;
va_start(args, format);
zend_error_cb(type, file, lineno, format, args);
va_end(args);
}
/* }}} */
/* This function doesn't return if it uses E_ERROR */
ZEND_API void zend_exception_error(zval *exception, int severity TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce_exception = Z_OBJCE_P(exception);
if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
zval *str, *file, *line;
EG(exception) = NULL;
zend_call_method_with_0_params(&exception, ce_exception, NULL, "__tostring", &str);
if (!EG(exception)) {
if (Z_TYPE_P(str) != IS_STRING) {
zend_error(E_WARNING, "%s::__toString() must return a string", ce_exception->name);
} else {
zend_update_property_string(default_exception_ce, exception, "string", sizeof("string")-1, EG(exception) ? ce_exception->name : Z_STRVAL_P(str) TSRMLS_CC);
}
}
zval_ptr_dtor(&str);
if (EG(exception)) {
/* do the best we can to inform about the inner exception */
if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
file = zend_read_property(default_exception_ce, EG(exception), "file", sizeof("file")-1, 1 TSRMLS_CC);
line = zend_read_property(default_exception_ce, EG(exception), "line", sizeof("line")-1, 1 TSRMLS_CC);
} else {
file = NULL;
line = NULL;
}
zend_error_va(E_WARNING, file ? Z_STRVAL_P(file) : NULL, line ? Z_LVAL_P(line) : 0, "Uncaught %s in exception handling during call to %s::__tostring()", Z_OBJCE_P(EG(exception))->name, ce_exception->name);
}
str = zend_read_property(default_exception_ce, exception, "string", sizeof("string")-1, 1 TSRMLS_CC);
file = zend_read_property(default_exception_ce, exception, "file", sizeof("file")-1, 1 TSRMLS_CC);
line = zend_read_property(default_exception_ce, exception, "line", sizeof("line")-1, 1 TSRMLS_CC);
zend_error_va(severity, Z_STRVAL_P(file), Z_LVAL_P(line), "Uncaught %s\n thrown", Z_STRVAL_P(str));
} else {
zend_error(severity, "Uncaught exception '%s'", ce_exception->name);
}
}
/* }}} */
ZEND_API void zend_throw_exception_object(zval *exception TSRMLS_DC) /* {{{ */
{
zend_class_entry *exception_ce;
if (exception == NULL || Z_TYPE_P(exception) != IS_OBJECT) {
zend_error(E_ERROR, "Need to supply an object when throwing an exception");
}
exception_ce = Z_OBJCE_P(exception);
if (!exception_ce || !instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
zend_error(E_ERROR, "Exceptions must be valid objects derived from the Exception base class");
}
zend_throw_exception_internal(exception TSRMLS_CC);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
|