1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2018 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Felipe Pena <felipe@php.net> |
16 | Authors: Joe Watkins <joe.watkins@live.co.uk> |
17 | Authors: Bob Weinand <bwoebi@php.net> |
18 +----------------------------------------------------------------------+
19 */
20
21 #include <stdio.h>
22 #include <string.h>
23 #include "zend.h"
24 #include "zend_compile.h"
25 #include "zend_exceptions.h"
26 #include "zend_vm.h"
27 #include "zend_generators.h"
28 #include "zend_interfaces.h"
29 #include "zend_smart_str.h"
30 #include "phpdbg.h"
31 #include "phpdbg_io.h"
32
33 #include "phpdbg_help.h"
34 #include "phpdbg_print.h"
35 #include "phpdbg_info.h"
36 #include "phpdbg_break.h"
37 #include "phpdbg_opcode.h"
38 #include "phpdbg_list.h"
39 #include "phpdbg_utils.h"
40 #include "phpdbg_prompt.h"
41 #include "phpdbg_cmd.h"
42 #include "phpdbg_set.h"
43 #include "phpdbg_frame.h"
44 #include "phpdbg_lexer.h"
45 #include "phpdbg_parser.h"
46 #include "phpdbg_wait.h"
47 #include "phpdbg_eol.h"
48
49 #if ZEND_VM_KIND != ZEND_VM_KIND_CALL && ZEND_VM_KIND != ZEND_VM_KIND_HYBRID
50 #error "phpdbg can only be built with CALL zend vm kind"
51 #endif
52
53 ZEND_EXTERN_MODULE_GLOBALS(phpdbg)
54 extern int phpdbg_startup_run;
55
56 #ifdef HAVE_LIBDL
57 #ifdef PHP_WIN32
58 #include "win32/param.h"
59 #include "win32/winutil.h"
60 #define GET_DL_ERROR() php_win_err()
61 #else
62 #include <sys/param.h>
63 #define GET_DL_ERROR() DL_ERROR()
64 #endif
65 #endif
66
67 /* {{{ command declarations */
68 const phpdbg_command_t phpdbg_prompt_commands[] = {
69 PHPDBG_COMMAND_D(exec, "set execution context", 'e', NULL, "s", 0),
70 PHPDBG_COMMAND_D(stdin, "read script from stdin", 0 , NULL, "s", 0),
71 PHPDBG_COMMAND_D(step, "step through execution", 's', NULL, 0, PHPDBG_ASYNC_SAFE),
72 PHPDBG_COMMAND_D(continue, "continue execution", 'c', NULL, 0, PHPDBG_ASYNC_SAFE),
73 PHPDBG_COMMAND_D(run, "attempt execution", 'r', NULL, "|s", 0),
74 PHPDBG_COMMAND_D(ev, "evaluate some code", 0 , NULL, "i", PHPDBG_ASYNC_SAFE), /* restricted ASYNC_SAFE */
75 PHPDBG_COMMAND_D(until, "continue past the current line", 'u', NULL, 0, 0),
76 PHPDBG_COMMAND_D(finish, "continue past the end of the stack", 'F', NULL, 0, 0),
77 PHPDBG_COMMAND_D(leave, "continue until the end of the stack", 'L', NULL, 0, 0),
78 PHPDBG_COMMAND_D(generator, "inspect or switch to a generator", 'g', NULL, "|n", 0),
79 PHPDBG_COMMAND_D(print, "print something", 'p', phpdbg_print_commands, "|*c", 0),
80 PHPDBG_COMMAND_D(break, "set breakpoint", 'b', phpdbg_break_commands, "|*c", 0),
81 PHPDBG_COMMAND_D(back, "show trace", 't', NULL, "|n", PHPDBG_ASYNC_SAFE),
82 PHPDBG_COMMAND_D(frame, "switch to a frame", 'f', NULL, "|n", PHPDBG_ASYNC_SAFE),
83 PHPDBG_COMMAND_D(list, "lists some code", 'l', phpdbg_list_commands, "*", PHPDBG_ASYNC_SAFE),
84 PHPDBG_COMMAND_D(info, "displays some informations", 'i', phpdbg_info_commands, "|s", PHPDBG_ASYNC_SAFE),
85 PHPDBG_COMMAND_D(clean, "clean the execution environment", 'X', NULL, 0, 0),
86 PHPDBG_COMMAND_D(clear, "clear breakpoints", 'C', NULL, 0, 0),
87 PHPDBG_COMMAND_D(help, "show help menu", 'h', phpdbg_help_commands, "|s", PHPDBG_ASYNC_SAFE),
88 PHPDBG_COMMAND_D(set, "set phpdbg configuration", 'S', phpdbg_set_commands, "s", PHPDBG_ASYNC_SAFE),
89 PHPDBG_COMMAND_D(register, "register a function", 'R', NULL, "s", 0),
90 PHPDBG_COMMAND_D(source, "execute a phpdbginit", '<', NULL, "s", 0),
91 PHPDBG_COMMAND_D(export, "export breaks to a .phpdbginit script", '>', NULL, "s", PHPDBG_ASYNC_SAFE),
92 PHPDBG_COMMAND_D(sh, "shell a command", 0 , NULL, "i", 0),
93 PHPDBG_COMMAND_D(quit, "exit phpdbg", 'q', NULL, 0, PHPDBG_ASYNC_SAFE),
94 PHPDBG_COMMAND_D(wait, "wait for other process", 'W', NULL, 0, 0),
95 PHPDBG_COMMAND_D(watch, "set watchpoint", 'w', phpdbg_watch_commands, "|ss", 0),
96 PHPDBG_COMMAND_D(next, "step over next line", 'n', NULL, 0, PHPDBG_ASYNC_SAFE),
97 PHPDBG_COMMAND_D(eol, "set EOL", 'E', NULL, "|s", 0),
98 PHPDBG_END_COMMAND
99 }; /* }}} */
100
phpdbg_call_register(phpdbg_param_t * stack)101 static inline int phpdbg_call_register(phpdbg_param_t *stack) /* {{{ */
102 {
103 phpdbg_param_t *name = NULL;
104
105 if (stack->type == STACK_PARAM) {
106 char *lc_name;
107
108 name = stack->next;
109
110 if (!name || name->type != STR_PARAM) {
111 return FAILURE;
112 }
113
114 lc_name = zend_str_tolower_dup(name->str, name->len);
115
116 if (zend_hash_str_exists(&PHPDBG_G(registered), lc_name, name->len)) {
117 zval fretval;
118 zend_fcall_info fci;
119
120 memset(&fci, 0, sizeof(zend_fcall_info));
121
122 ZVAL_STRINGL(&fci.function_name, lc_name, name->len);
123 fci.size = sizeof(zend_fcall_info);
124 //???fci.symbol_table = zend_rebuild_symbol_table();
125 fci.object = NULL;
126 fci.retval = &fretval;
127 fci.no_separation = 1;
128
129 if (name->next) {
130 zval params;
131 phpdbg_param_t *next = name->next;
132
133 array_init(¶ms);
134
135 while (next) {
136 char *buffered = NULL;
137
138 switch (next->type) {
139 case OP_PARAM:
140 case COND_PARAM:
141 case STR_PARAM:
142 add_next_index_stringl(¶ms, next->str, next->len);
143 break;
144
145 case NUMERIC_PARAM:
146 add_next_index_long(¶ms, next->num);
147 break;
148
149 case METHOD_PARAM:
150 spprintf(&buffered, 0, "%s::%s", next->method.class, next->method.name);
151 add_next_index_string(¶ms, buffered);
152 break;
153
154 case NUMERIC_METHOD_PARAM:
155 spprintf(&buffered, 0, "%s::%s#%ld", next->method.class, next->method.name, next->num);
156 add_next_index_string(¶ms, buffered);
157 break;
158
159 case NUMERIC_FUNCTION_PARAM:
160 spprintf(&buffered, 0, "%s#%ld", next->str, next->num);
161 add_next_index_string(¶ms, buffered);
162 break;
163
164 case FILE_PARAM:
165 spprintf(&buffered, 0, "%s:%ld", next->file.name, next->file.line);
166 add_next_index_string(¶ms, buffered);
167 break;
168
169 case NUMERIC_FILE_PARAM:
170 spprintf(&buffered, 0, "%s:#%ld", next->file.name, next->file.line);
171 add_next_index_string(¶ms, buffered);
172 break;
173
174 default: {
175 /* not yet */
176 }
177 }
178
179 next = next->next;
180 }
181
182 zend_fcall_info_args(&fci, ¶ms);
183 } else {
184 fci.params = NULL;
185 fci.param_count = 0;
186 }
187
188 phpdbg_activate_err_buf(0);
189 phpdbg_free_err_buf();
190
191 phpdbg_debug("created %d params from arguments", fci.param_count);
192
193 if (zend_call_function(&fci, NULL) == SUCCESS) {
194 zend_print_zval_r(&fretval, 0);
195 phpdbg_out("\n");
196 zval_ptr_dtor(&fretval);
197 }
198
199 zval_dtor(&fci.function_name);
200 efree(lc_name);
201
202 return SUCCESS;
203 }
204
205 efree(lc_name);
206 }
207
208 return FAILURE;
209 } /* }}} */
210
211 struct phpdbg_init_state {
212 int line;
213 zend_bool in_code;
214 char *code;
215 size_t code_len;
216 const char *init_file;
217 };
218
phpdbg_line_init(char * cmd,struct phpdbg_init_state * state)219 static void phpdbg_line_init(char *cmd, struct phpdbg_init_state *state) {
220 size_t cmd_len = strlen(cmd);
221
222 state->line++;
223
224 while (cmd_len > 0L && isspace(cmd[cmd_len-1])) {
225 cmd_len--;
226 }
227
228 cmd[cmd_len] = '\0';
229
230 if (*cmd && cmd_len > 0L && cmd[0] != '#') {
231 if (cmd_len == 2) {
232 if (memcmp(cmd, "<:", sizeof("<:")-1) == SUCCESS) {
233 state->in_code = 1;
234 return;
235 } else {
236 if (memcmp(cmd, ":>", sizeof(":>")-1) == SUCCESS) {
237 state->in_code = 0;
238 state->code[state->code_len] = '\0';
239 zend_eval_stringl(state->code, state->code_len, NULL, "phpdbginit code");
240 free(state->code);
241 state->code = NULL;
242 return;
243 }
244 }
245 }
246
247 if (state->in_code) {
248 if (state->code == NULL) {
249 state->code = malloc(cmd_len + 1);
250 } else {
251 state->code = realloc(state->code, state->code_len + cmd_len + 1);
252 }
253
254 if (state->code) {
255 memcpy(&state->code[state->code_len], cmd, cmd_len);
256 state->code_len += cmd_len;
257 }
258
259 return;
260 }
261
262 zend_try {
263 char *input = phpdbg_read_input(cmd);
264 phpdbg_param_t stack;
265
266 phpdbg_init_param(&stack, STACK_PARAM);
267
268 phpdbg_activate_err_buf(1);
269
270 if (phpdbg_do_parse(&stack, input) <= 0) {
271 switch (phpdbg_stack_execute(&stack, 1 /* allow_async_unsafe == 1 */)) {
272 case FAILURE:
273 phpdbg_activate_err_buf(0);
274 if (phpdbg_call_register(&stack) == FAILURE) {
275 if (state->init_file) {
276 phpdbg_output_err_buf("initfailure", "%b file=\"%s\" line=\"%d\" input=\"%s\"", "Unrecognized command in %s:%d: %s, %b!", state->init_file, state->line, input);
277 } else {
278 phpdbg_output_err_buf("initfailure", "%b line=\"%d\" input=\"%s\"", "Unrecognized command on line %d: %s, %b!", state->line, input);
279 }
280 }
281 break;
282 }
283 }
284
285 phpdbg_activate_err_buf(0);
286 phpdbg_free_err_buf();
287
288 phpdbg_stack_free(&stack);
289 phpdbg_destroy_input(&input);
290 } zend_catch {
291 PHPDBG_G(flags) &= ~(PHPDBG_IS_RUNNING | PHPDBG_IS_CLEANING);
292 if (PHPDBG_G(flags) & PHPDBG_IS_QUITTING) {
293 zend_bailout();
294 }
295 } zend_end_try();
296 }
297
298 }
299
phpdbg_string_init(char * buffer)300 void phpdbg_string_init(char *buffer) {
301 struct phpdbg_init_state state = {0};
302 char *str = strtok(buffer, "\n");
303
304 while (str) {
305 phpdbg_line_init(str, &state);
306
307 str = strtok(NULL, "\n");
308 }
309
310 if (state.code) {
311 free(state.code);
312 }
313 }
314
phpdbg_try_file_init(char * init_file,size_t init_file_len,zend_bool free_init)315 void phpdbg_try_file_init(char *init_file, size_t init_file_len, zend_bool free_init) /* {{{ */
316 {
317 zend_stat_t sb;
318
319 if (init_file && VCWD_STAT(init_file, &sb) != -1) {
320 FILE *fp = fopen(init_file, "r");
321 if (fp) {
322 char cmd[PHPDBG_MAX_CMD];
323 struct phpdbg_init_state state = {0};
324
325 state.init_file = init_file;
326
327 while (fgets(cmd, PHPDBG_MAX_CMD, fp) != NULL) {
328 phpdbg_line_init(cmd, &state);
329 }
330
331 if (state.code) {
332 free(state.code);
333 }
334
335 fclose(fp);
336 } else {
337 phpdbg_error("initfailure", "type=\"openfile\" file=\"%s\"", "Failed to open %s for initialization", init_file);
338 }
339
340 if (free_init) {
341 free(init_file);
342 }
343 }
344 } /* }}} */
345
phpdbg_init(char * init_file,size_t init_file_len,zend_bool use_default)346 void phpdbg_init(char *init_file, size_t init_file_len, zend_bool use_default) /* {{{ */
347 {
348 if (init_file) {
349 phpdbg_try_file_init(init_file, init_file_len, 1);
350 } else if (use_default) {
351 char *scan_dir = getenv("PHP_INI_SCAN_DIR");
352 char *sys_ini;
353 int i;
354
355 ZEND_IGNORE_VALUE(asprintf(&sys_ini, "%s/" PHPDBG_INIT_FILENAME, PHP_CONFIG_FILE_PATH));
356 phpdbg_try_file_init(sys_ini, strlen(sys_ini), 0);
357 free(sys_ini);
358
359 if (!scan_dir) {
360 scan_dir = PHP_CONFIG_FILE_SCAN_DIR;
361 }
362 while (*scan_dir != 0) {
363 i = 0;
364 while (scan_dir[i] != ':') {
365 if (scan_dir[i++] == 0) {
366 i = -1;
367 break;
368 }
369 }
370 if (i != -1) {
371 scan_dir[i] = 0;
372 }
373
374 ZEND_IGNORE_VALUE(asprintf(&init_file, "%s/%s", scan_dir, PHPDBG_INIT_FILENAME));
375 phpdbg_try_file_init(init_file, strlen(init_file), 1);
376 if (i == -1) {
377 break;
378 }
379 scan_dir += i + 1;
380 }
381
382 phpdbg_try_file_init(PHPDBG_STRL(PHPDBG_INIT_FILENAME), 0);
383 }
384 }
385 /* }}} */
386
phpdbg_clean(zend_bool full,zend_bool resubmit)387 void phpdbg_clean(zend_bool full, zend_bool resubmit) /* {{{ */
388 {
389 /* this is implicitly required */
390 if (PHPDBG_G(ops)) {
391 destroy_op_array(PHPDBG_G(ops));
392 efree(PHPDBG_G(ops));
393 PHPDBG_G(ops) = NULL;
394 }
395
396 if (!resubmit && PHPDBG_G(cur_command)) {
397 free(PHPDBG_G(cur_command));
398 PHPDBG_G(cur_command) = NULL;
399 }
400
401 if (full) {
402 PHPDBG_G(flags) |= PHPDBG_IS_CLEANING;
403 }
404 } /* }}} */
405
PHPDBG_COMMAND(exec)406 PHPDBG_COMMAND(exec) /* {{{ */
407 {
408 zend_stat_t sb;
409
410 if (VCWD_STAT(param->str, &sb) != FAILURE) {
411 if (sb.st_mode & (S_IFREG|S_IFLNK)) {
412 char *res = phpdbg_resolve_path(param->str);
413 size_t res_len = strlen(res);
414
415 if ((res_len != PHPDBG_G(exec_len)) || (memcmp(res, PHPDBG_G(exec), res_len) != SUCCESS)) {
416 if (PHPDBG_G(in_execution)) {
417 if (phpdbg_ask_user_permission("Do you really want to stop execution to set a new execution context?") == FAILURE) {
418 return FAILURE;
419 }
420 }
421
422 if (PHPDBG_G(exec)) {
423 phpdbg_notice("exec", "type=\"unset\" context=\"%s\"", "Unsetting old execution context: %s", PHPDBG_G(exec));
424 efree(PHPDBG_G(exec));
425 PHPDBG_G(exec) = NULL;
426 PHPDBG_G(exec_len) = 0L;
427 }
428
429 if (PHPDBG_G(ops)) {
430 phpdbg_notice("exec", "type=\"unsetops\"", "Destroying compiled opcodes");
431 phpdbg_clean(0, 0);
432 }
433
434 PHPDBG_G(exec) = res;
435 PHPDBG_G(exec_len) = res_len;
436
437 VCWD_CHDIR_FILE(res);
438
439 *SG(request_info).argv = PHPDBG_G(exec);
440 php_build_argv(NULL, &PG(http_globals)[TRACK_VARS_SERVER]);
441
442 phpdbg_notice("exec", "type=\"set\" context=\"%s\"", "Set execution context: %s", PHPDBG_G(exec));
443
444 if (PHPDBG_G(in_execution)) {
445 phpdbg_clean(1, 0);
446 return SUCCESS;
447 }
448
449 phpdbg_compile();
450 } else {
451 phpdbg_notice("exec", "type=\"unchanged\"", "Execution context not changed");
452 }
453 } else {
454 phpdbg_error("exec", "type=\"invalid\" context=\"%s\"", "Cannot use %s as execution context, not a valid file or symlink", param->str);
455 }
456 } else {
457 phpdbg_error("exec", "type=\"notfound\" context=\"%s\"", "Cannot stat %s, ensure the file exists", param->str);
458 }
459 return SUCCESS;
460 } /* }}} */
461
PHPDBG_COMMAND(stdin)462 PHPDBG_COMMAND(stdin)
463 {
464 smart_str code = {0};
465 char *buf;
466 char *sep = param->str;
467 int seplen = param->len;
468 int bytes = 0;
469
470 smart_str_appends(&code, "?>");
471
472 do {
473 PHPDBG_G(input_buflen) += bytes;
474 if (PHPDBG_G(input_buflen) <= 0) {
475 continue;
476 }
477
478 if (sep && seplen) {
479 char *nl = buf = PHPDBG_G(input_buffer);
480 do {
481 if (buf == nl + seplen) {
482 if (!memcmp(sep, nl, seplen) && (*buf == '\n' || (*buf == '\r' && buf[1] == '\n'))) {
483 smart_str_appendl(&code, PHPDBG_G(input_buffer), nl - PHPDBG_G(input_buffer));
484 memmove(PHPDBG_G(input_buffer), ++buf, --PHPDBG_G(input_buflen));
485 goto exec_code;
486 }
487 }
488 if (*buf == '\n') {
489 nl = buf + 1;
490 }
491 buf++;
492 } while (--PHPDBG_G(input_buflen));
493 if (buf != nl && buf <= nl + seplen) {
494 smart_str_appendl(&code, PHPDBG_G(input_buffer), nl - PHPDBG_G(input_buffer));
495 PHPDBG_G(input_buflen) = buf - nl;
496 memmove(PHPDBG_G(input_buffer), nl, PHPDBG_G(input_buflen));
497 } else {
498 PHPDBG_G(input_buflen) = 0;
499 smart_str_appendl(&code, PHPDBG_G(input_buffer), buf - PHPDBG_G(input_buffer));
500 }
501 } else {
502 smart_str_appendl(&code, PHPDBG_G(input_buffer), PHPDBG_G(input_buflen));
503 PHPDBG_G(input_buflen) = 0;
504 }
505 } while ((bytes = phpdbg_mixed_read(PHPDBG_G(io)[PHPDBG_STDIN].fd, PHPDBG_G(input_buffer) + PHPDBG_G(input_buflen), PHPDBG_MAX_CMD - PHPDBG_G(input_buflen), -1)) > 0);
506
507 if (bytes < 0) {
508 PHPDBG_G(flags) |= PHPDBG_IS_QUITTING | PHPDBG_IS_DISCONNECTED;
509 zend_bailout();
510 }
511
512 exec_code:
513 smart_str_0(&code);
514
515 if (phpdbg_compile_stdin(code.s) == FAILURE) {
516 zend_exception_error(EG(exception), E_ERROR);
517 zend_bailout();
518 }
519
520 return SUCCESS;
521 } /* }}} */
522
phpdbg_compile_stdin(zend_string * code)523 int phpdbg_compile_stdin(zend_string *code) {
524 zval zv;
525
526 ZVAL_STR(&zv, code);
527
528 PHPDBG_G(ops) = zend_compile_string(&zv, "Standard input code");
529
530 zend_string_release(code);
531
532 if (EG(exception)) {
533 return FAILURE;
534 }
535
536 if (PHPDBG_G(exec)) {
537 efree(PHPDBG_G(exec));
538 }
539 PHPDBG_G(exec) = estrdup("Standard input code");
540 PHPDBG_G(exec_len) = sizeof("Standard input code") - 1;
541 { /* remove leading ?> from source */
542 int i;
543 /* remove trailing data after zero byte, used for avoiding conflicts in eval()'ed code snippets */
544 zend_string *source_path = strpprintf(0, "Standard input code%c%p", 0, PHPDBG_G(ops)->opcodes);
545 phpdbg_file_source *data = zend_hash_find_ptr(&PHPDBG_G(file_sources), source_path);
546 dtor_func_t dtor = PHPDBG_G(file_sources).pDestructor;
547 PHPDBG_G(file_sources).pDestructor = NULL;
548 zend_hash_del(&PHPDBG_G(file_sources), source_path);
549 PHPDBG_G(file_sources).pDestructor = dtor;
550 zend_hash_str_update_ptr(&PHPDBG_G(file_sources), "Standard input code", sizeof("Standard input code")-1, data);
551 zend_string_release(source_path);
552
553 for (i = 1; i <= data->lines; i++) {
554 data->line[i] -= 2;
555 }
556 data->len -= 2;
557 memmove(data->buf, data->buf + 2, data->len);
558 }
559
560 phpdbg_notice("compile", "context=\"Standard input code\"", "Successful compilation of stdin input");
561
562 return SUCCESS;
563 }
564
phpdbg_compile(void)565 int phpdbg_compile(void) /* {{{ */
566 {
567 zend_file_handle fh;
568 char *buf;
569 char *start_line = NULL;
570 size_t len;
571 size_t start_line_len;
572 int i;
573
574 if (!PHPDBG_G(exec)) {
575 phpdbg_error("inactive", "type=\"nocontext\"", "No execution context");
576 return FAILURE;
577 }
578
579 if (php_stream_open_for_zend_ex(PHPDBG_G(exec), &fh, USE_PATH|STREAM_OPEN_FOR_INCLUDE) == SUCCESS && zend_stream_fixup(&fh, &buf, &len) == SUCCESS) {
580 /* Skip #! line */
581 if (len >= 3 && buf[0] == '#' && buf[1] == '!') {
582 char *end = buf + len;
583 do {
584 switch (fh.handle.stream.mmap.buf++[0]) {
585 case '\r':
586 if (fh.handle.stream.mmap.buf[0] == '\n') {
587 fh.handle.stream.mmap.buf++;
588 }
589 case '\n':
590 CG(start_lineno) = 2;
591 start_line_len = fh.handle.stream.mmap.buf - buf;
592 start_line = emalloc(start_line_len);
593 memcpy(start_line, buf, start_line_len);
594 fh.handle.stream.mmap.len -= start_line_len;
595 end = fh.handle.stream.mmap.buf;
596 }
597 } while (fh.handle.stream.mmap.buf + 1 < end);
598 }
599
600 PHPDBG_G(ops) = zend_compile_file(&fh, ZEND_INCLUDE);
601
602 /* prepend shebang line to file_source */
603 if (start_line) {
604 phpdbg_file_source *data = zend_hash_find_ptr(&PHPDBG_G(file_sources), PHPDBG_G(ops)->filename);
605
606 dtor_func_t dtor = PHPDBG_G(file_sources).pDestructor;
607 PHPDBG_G(file_sources).pDestructor = NULL;
608 zend_hash_del(&PHPDBG_G(file_sources), PHPDBG_G(ops)->filename);
609 PHPDBG_G(file_sources).pDestructor = dtor;
610
611 data = erealloc(data, sizeof(phpdbg_file_source) + sizeof(uint32_t) * ++data->lines);
612 memmove(data->line + 1, data->line, sizeof(uint32_t) * data->lines);
613 data->line[0] = 0;
614 data->buf = erealloc(data->buf, data->len + start_line_len);
615 memmove(data->buf + start_line_len, data->buf, data->len);
616 memcpy(data->buf, start_line, start_line_len);
617 efree(start_line);
618 data->len += start_line_len;
619 for (i = 1; i <= data->lines; i++) {
620 data->line[i] += start_line_len;
621 }
622 zend_hash_update_ptr(&PHPDBG_G(file_sources), PHPDBG_G(ops)->filename, data);
623 }
624
625 fh.handle.stream.mmap.buf = buf;
626 fh.handle.stream.mmap.len = len;
627 zend_destroy_file_handle(&fh);
628 if (EG(exception)) {
629 zend_exception_error(EG(exception), E_ERROR);
630 zend_bailout();
631 }
632
633 phpdbg_notice("compile", "context=\"%s\"", "Successful compilation of %s", PHPDBG_G(exec));
634
635 return SUCCESS;
636 } else {
637 phpdbg_error("compile", "type=\"openfailure\" context=\"%s\"", "Could not open file %s", PHPDBG_G(exec));
638 }
639
640 return FAILURE;
641 } /* }}} */
642
PHPDBG_COMMAND(step)643 PHPDBG_COMMAND(step) /* {{{ */
644 {
645 if (PHPDBG_G(in_execution)) {
646 PHPDBG_G(flags) |= PHPDBG_IS_STEPPING;
647 }
648
649 return PHPDBG_NEXT;
650 } /* }}} */
651
PHPDBG_COMMAND(continue)652 PHPDBG_COMMAND(continue) /* {{{ */
653 {
654 return PHPDBG_NEXT;
655 } /* }}} */
656
phpdbg_skip_line_helper()657 int phpdbg_skip_line_helper() /* {{{ */ {
658 zend_execute_data *ex = phpdbg_user_execute_data(EG(current_execute_data));
659 const zend_op_array *op_array = &ex->func->op_array;
660 const zend_op *opline = op_array->opcodes;
661
662 PHPDBG_G(flags) |= PHPDBG_IN_UNTIL;
663 PHPDBG_G(seek_ex) = ex;
664 do {
665 if (opline->lineno != ex->opline->lineno
666 || opline->opcode == ZEND_RETURN
667 || opline->opcode == ZEND_FAST_RET
668 || opline->opcode == ZEND_GENERATOR_RETURN
669 || opline->opcode == ZEND_EXIT
670 || opline->opcode == ZEND_YIELD
671 || opline->opcode == ZEND_YIELD_FROM
672 ) {
673 zend_hash_index_update_ptr(&PHPDBG_G(seek), (zend_ulong) opline, (void *) opline);
674 }
675 } while (++opline < op_array->opcodes + op_array->last);
676
677 return PHPDBG_UNTIL;
678 }
679 /* }}} */
680
PHPDBG_COMMAND(until)681 PHPDBG_COMMAND(until) /* {{{ */
682 {
683 if (!PHPDBG_G(in_execution)) {
684 phpdbg_error("inactive", "type=\"noexec\"", "Not executing");
685 return SUCCESS;
686 }
687
688 return phpdbg_skip_line_helper();
689 } /* }}} */
690
PHPDBG_COMMAND(next)691 PHPDBG_COMMAND(next) /* {{{ */
692 {
693 if (!PHPDBG_G(in_execution)) {
694 phpdbg_error("inactive", "type=\"noexec\"", "Not executing");
695 return SUCCESS;
696 }
697
698 PHPDBG_G(flags) |= PHPDBG_IS_STEPPING;
699 return phpdbg_skip_line_helper();
700 } /* }}} */
701
phpdbg_seek_to_end(void)702 static void phpdbg_seek_to_end(void) /* {{{ */ {
703 zend_execute_data *ex = phpdbg_user_execute_data(EG(current_execute_data));
704 const zend_op_array *op_array = &ex->func->op_array;
705 const zend_op *opline = op_array->opcodes;
706
707 PHPDBG_G(seek_ex) = ex;
708 do {
709 switch (opline->opcode) {
710 case ZEND_RETURN:
711 case ZEND_FAST_RET:
712 case ZEND_GENERATOR_RETURN:
713 case ZEND_EXIT:
714 case ZEND_YIELD:
715 case ZEND_YIELD_FROM:
716 zend_hash_index_update_ptr(&PHPDBG_G(seek), (zend_ulong) opline, (void *) opline);
717 }
718 } while (++opline < op_array->opcodes + op_array->last);
719 }
720 /* }}} */
721
PHPDBG_COMMAND(finish)722 PHPDBG_COMMAND(finish) /* {{{ */
723 {
724 if (!PHPDBG_G(in_execution)) {
725 phpdbg_error("inactive", "type=\"noexec\"", "Not executing");
726 return SUCCESS;
727 }
728
729 phpdbg_seek_to_end();
730 if (zend_hash_index_exists(&PHPDBG_G(seek), (zend_ulong) phpdbg_user_execute_data(EG(current_execute_data))->opline)) {
731 zend_hash_clean(&PHPDBG_G(seek));
732 } else {
733 PHPDBG_G(flags) |= PHPDBG_IN_FINISH;
734 }
735
736 return PHPDBG_FINISH;
737 } /* }}} */
738
PHPDBG_COMMAND(leave)739 PHPDBG_COMMAND(leave) /* {{{ */
740 {
741 if (!PHPDBG_G(in_execution)) {
742 phpdbg_error("inactive", "type=\"noexec\"", "Not executing");
743 return SUCCESS;
744 }
745
746 phpdbg_seek_to_end();
747 if (zend_hash_index_exists(&PHPDBG_G(seek), (zend_ulong) phpdbg_user_execute_data(EG(current_execute_data))->opline)) {
748 zend_hash_clean(&PHPDBG_G(seek));
749 phpdbg_notice("leave", "type=\"end\"", "Already at the end of the function");
750 return SUCCESS;
751 } else {
752 PHPDBG_G(flags) |= PHPDBG_IN_LEAVE;
753 return PHPDBG_LEAVE;
754 }
755 } /* }}} */
756
PHPDBG_COMMAND(frame)757 PHPDBG_COMMAND(frame) /* {{{ */
758 {
759 if (!param) {
760 phpdbg_notice("frame", "id=\"%d\"", "Currently in frame #%d", PHPDBG_G(frame).num);
761 } else {
762 phpdbg_switch_frame(param->num);
763 }
764
765 return SUCCESS;
766 } /* }}} */
767
phpdbg_handle_exception(void)768 static inline void phpdbg_handle_exception(void) /* {{{ */
769 {
770 zend_object *ex = EG(exception);
771 zend_string *msg, *file;
772 zend_long line;
773 zval zv, rv, tmp;
774
775 EG(exception) = NULL;
776
777 ZVAL_OBJ(&zv, ex);
778 zend_call_method_with_0_params(&zv, ex->ce, NULL, "__tostring", &tmp);
779 file = zval_get_string(zend_read_property(zend_get_exception_base(&zv), &zv, ZEND_STRL("file"), 1, &rv));
780 line = zval_get_long(zend_read_property(zend_get_exception_base(&zv), &zv, ZEND_STRL("line"), 1, &rv));
781
782 if (EG(exception)) {
783 EG(exception) = NULL;
784 msg = ZSTR_EMPTY_ALLOC();
785 } else {
786 zend_update_property_string(zend_get_exception_base(&zv), &zv, ZEND_STRL("string"), Z_STRVAL(tmp));
787 zval_ptr_dtor(&tmp);
788 msg = zval_get_string(zend_read_property(zend_get_exception_base(&zv), &zv, ZEND_STRL("string"), 1, &rv));
789 }
790
791 phpdbg_error("exception", "name=\"%s\" file=\"%s\" line=\"" ZEND_LONG_FMT "\"", "Uncaught %s in %s on line " ZEND_LONG_FMT, ZSTR_VAL(ex->ce->name), ZSTR_VAL(file), line);
792 zend_string_release(file);
793 phpdbg_writeln("exceptionmsg", "msg=\"%s\"", "%s", ZSTR_VAL(msg));
794 zend_string_release(msg);
795
796 if (EG(prev_exception)) {
797 OBJ_RELEASE(EG(prev_exception));
798 EG(prev_exception) = 0;
799 }
800 OBJ_RELEASE(ex);
801 EG(opline_before_exception) = NULL;
802
803 EG(exit_status) = 255;
804 } /* }}} */
805
PHPDBG_COMMAND(run)806 PHPDBG_COMMAND(run) /* {{{ */
807 {
808 if (PHPDBG_G(ops) || PHPDBG_G(exec)) {
809 zend_execute_data *ex = EG(current_execute_data);
810 zend_bool restore = 1;
811
812 if (PHPDBG_G(in_execution)) {
813 if (phpdbg_ask_user_permission("Do you really want to restart execution?") == SUCCESS) {
814 phpdbg_startup_run++;
815 phpdbg_clean(1, 1);
816 }
817 return SUCCESS;
818 }
819
820 if (!PHPDBG_G(ops)) {
821 if (phpdbg_compile() == FAILURE) {
822 phpdbg_error("compile", "type=\"compilefailure\" context=\"%s\"", "Failed to compile %s, cannot run", PHPDBG_G(exec));
823 goto out;
824 }
825 }
826
827 if (param && param->type != EMPTY_PARAM && param->len != 0) {
828 char **argv = emalloc(5 * sizeof(char *));
829 char *end = param->str + param->len, *p = param->str;
830 char last_byte;
831 int argc = 0;
832 int i;
833
834 while (*end == '\r' || *end == '\n') *(end--) = 0;
835 last_byte = end[1];
836 end[1] = 0;
837
838 while (*p == ' ') p++;
839 while (*p) {
840 char sep = ' ';
841 char *buf = emalloc(end - p + 1), *q = buf;
842
843 if (*p == '<') {
844 /* use as STDIN */
845 do p++; while (*p == ' ');
846
847 if (*p == '\'' || *p == '"') {
848 sep = *(p++);
849 }
850 while (*p && *p != sep) {
851 if (*p == '\\' && (p[1] == sep || p[1] == '\\')) {
852 p++;
853 }
854 *(q++) = *(p++);
855 }
856 *(q++) = 0;
857 if (*p) {
858 do p++; while (*p == ' ');
859 }
860
861 if (*p) {
862 phpdbg_error("cmd", "", "Invalid run command, cannot put further arguments after stdin");
863 goto free_cmd;
864 }
865
866 PHPDBG_G(stdin_file) = fopen(buf, "r");
867 if (PHPDBG_G(stdin_file) == NULL) {
868 phpdbg_error("stdin", "path=\"%s\"", "Could not open '%s' for reading from stdin", buf);
869 goto free_cmd;
870 }
871 efree(buf);
872 phpdbg_register_file_handles();
873 break;
874 }
875
876 if (argc >= 4 && argc == (argc & -argc)) {
877 argv = erealloc(argv, (argc * 2 + 1) * sizeof(char *));
878 }
879
880 if (*p == '\'' || *p == '"') {
881 sep = *(p++);
882 }
883 if (*p == '\\' && (p[1] == '<' || p[1] == '\'' || p[1] == '"')) {
884 p++;
885 }
886 while (*p && *p != sep) {
887 if (*p == '\\' && (p[1] == sep || p[1] == '\\' || (p[1] == '#' && sep == ' '))) {
888 p++;
889 }
890 *(q++) = *(p++);
891 }
892 if (!*p && sep != ' ') {
893 phpdbg_error("cmd", "", "Invalid run command, unterminated escape sequence");
894 free_cmd:
895 efree(buf);
896 for (i = 0; i < argc; i++) {
897 efree(argv[i]);
898 }
899 efree(argv);
900 end[1] = last_byte;
901 return SUCCESS;
902 }
903
904 *(q++) = 0;
905 argv[++argc] = erealloc(buf, q - buf);
906
907 if (*p) {
908 do p++; while (*p == ' ');
909 }
910 }
911 end[1] = last_byte;
912
913 argv[0] = SG(request_info).argv[0];
914 for (i = SG(request_info).argc; --i;) {
915 efree(SG(request_info).argv[i]);
916 }
917 efree(SG(request_info).argv);
918 SG(request_info).argv = erealloc(argv, ++argc * sizeof(char *));
919 SG(request_info).argc = argc;
920
921 php_build_argv(NULL, &PG(http_globals)[TRACK_VARS_SERVER]);
922 }
923
924 /* clean up from last execution */
925 if (ex && (ZEND_CALL_INFO(ex) & ZEND_CALL_HAS_SYMBOL_TABLE)) {
926 zend_hash_clean(ex->symbol_table);
927 } else {
928 zend_rebuild_symbol_table();
929 }
930 PHPDBG_G(handled_exception) = NULL;
931
932 /* clean seek state */
933 PHPDBG_G(flags) &= ~PHPDBG_SEEK_MASK;
934 zend_hash_clean(&PHPDBG_G(seek));
935
936 /* reset hit counters */
937 phpdbg_reset_breakpoints();
938
939 zend_try {
940 PHPDBG_G(flags) ^= PHPDBG_IS_INTERACTIVE;
941 PHPDBG_G(flags) |= PHPDBG_IS_RUNNING;
942 zend_execute(PHPDBG_G(ops), &PHPDBG_G(retval));
943 PHPDBG_G(flags) ^= PHPDBG_IS_INTERACTIVE;
944 } zend_catch {
945 PHPDBG_G(in_execution) = 0;
946
947 if (!(PHPDBG_G(flags) & PHPDBG_IS_STOPPING)) {
948 restore = 0;
949 } else {
950 zend_bailout();
951 }
952 } zend_end_try();
953
954 if (PHPDBG_G(socket_fd) != -1) {
955 close(PHPDBG_G(socket_fd));
956 PHPDBG_G(socket_fd) = -1;
957 }
958
959 if (restore) {
960 zend_exception_restore();
961 zend_try {
962 zend_try_exception_handler();
963 PHPDBG_G(in_execution) = 1;
964 } zend_catch {
965 PHPDBG_G(in_execution) = 0;
966
967 if (PHPDBG_G(flags) & PHPDBG_IS_STOPPING) {
968 zend_bailout();
969 }
970 } zend_end_try();
971
972 if (EG(exception)) {
973 phpdbg_handle_exception();
974 }
975 }
976
977 PHPDBG_G(flags) &= ~PHPDBG_IS_RUNNING;
978
979 phpdbg_clean(1, 0);
980 } else {
981 phpdbg_error("inactive", "type=\"nocontext\"", "Nothing to execute!");
982 }
983
984 out:
985 PHPDBG_FRAME(num) = 0;
986 return SUCCESS;
987 } /* }}} */
988
phpdbg_output_ev_variable(char * name,size_t len,char * keyname,size_t keylen,HashTable * parent,zval * zv)989 int phpdbg_output_ev_variable(char *name, size_t len, char *keyname, size_t keylen, HashTable *parent, zval *zv) /* {{{ */ {
990 phpdbg_notice("eval", "variable=\"%.*s\"", "Printing variable %.*s", (int) len, name);
991 phpdbg_xml("<eval %r>");
992 zend_print_zval_r(zv, 0);
993 phpdbg_xml("</eval>");
994 phpdbg_out("\n");
995
996 efree(name);
997 efree(keyname);
998
999 return SUCCESS;
1000 }
1001 /* }}} */
1002
PHPDBG_COMMAND(ev)1003 PHPDBG_COMMAND(ev) /* {{{ */
1004 {
1005 zend_bool stepping = ((PHPDBG_G(flags) & PHPDBG_IS_STEPPING) == PHPDBG_IS_STEPPING);
1006 zval retval;
1007
1008 zend_execute_data *original_execute_data = EG(current_execute_data);
1009 zend_vm_stack original_stack = EG(vm_stack);
1010 zend_object *ex = NULL;
1011
1012 PHPDBG_OUTPUT_BACKUP();
1013
1014 original_stack->top = EG(vm_stack_top);
1015
1016 if (PHPDBG_G(flags) & PHPDBG_IN_SIGNAL_HANDLER) {
1017 phpdbg_try_access {
1018 phpdbg_parse_variable(param->str, param->len, &EG(symbol_table), 0, phpdbg_output_ev_variable, 0);
1019 } phpdbg_catch_access {
1020 phpdbg_error("signalsegv", "", "Could not fetch data, invalid data source");
1021 } phpdbg_end_try_access();
1022
1023 PHPDBG_OUTPUT_BACKUP_RESTORE();
1024 return SUCCESS;
1025 }
1026
1027 if (!(PHPDBG_G(flags) & PHPDBG_IS_STEPONEVAL)) {
1028 PHPDBG_G(flags) &= ~PHPDBG_IS_STEPPING;
1029 }
1030
1031 /* disable stepping while eval() in progress */
1032 PHPDBG_G(flags) |= PHPDBG_IN_EVAL;
1033 zend_try {
1034 if (zend_eval_stringl(param->str, param->len, &retval, "eval()'d code") == SUCCESS) {
1035 if (EG(exception)) {
1036 ex = EG(exception);
1037 zend_exception_error(EG(exception), E_ERROR);
1038 } else {
1039 phpdbg_xml("<eval %r>");
1040 if (PHPDBG_G(flags) & PHPDBG_WRITE_XML) {
1041 zval *zvp = &retval;
1042 phpdbg_xml_var_dump(zvp);
1043 }
1044 zend_print_zval_r(&retval, 0);
1045 phpdbg_xml("</eval>");
1046 phpdbg_out("\n");
1047 zval_ptr_dtor(&retval);
1048 }
1049 }
1050 } zend_catch {
1051 PHPDBG_G(unclean_eval) = 1;
1052 if (ex) {
1053 OBJ_RELEASE(ex);
1054 }
1055 EG(current_execute_data) = original_execute_data;
1056 EG(vm_stack_top) = original_stack->top;
1057 EG(vm_stack_end) = original_stack->end;
1058 EG(vm_stack) = original_stack;
1059 EG(exit_status) = 0;
1060 } zend_end_try();
1061
1062 PHPDBG_G(flags) &= ~PHPDBG_IN_EVAL;
1063
1064 /* switch stepping back on */
1065 if (stepping && !(PHPDBG_G(flags) & PHPDBG_IS_STEPONEVAL)) {
1066 PHPDBG_G(flags) |= PHPDBG_IS_STEPPING;
1067 }
1068
1069 CG(unclean_shutdown) = 0;
1070
1071 PHPDBG_OUTPUT_BACKUP_RESTORE();
1072
1073 return SUCCESS;
1074 } /* }}} */
1075
PHPDBG_COMMAND(back)1076 PHPDBG_COMMAND(back) /* {{{ */
1077 {
1078 if (!PHPDBG_G(in_execution)) {
1079 phpdbg_error("inactive", "type=\"noexec\"", "Not executing!");
1080 return SUCCESS;
1081 }
1082
1083 if (!param) {
1084 phpdbg_dump_backtrace(0);
1085 } else {
1086 phpdbg_dump_backtrace(param->num);
1087 }
1088
1089 return SUCCESS;
1090 } /* }}} */
1091
PHPDBG_COMMAND(generator)1092 PHPDBG_COMMAND(generator) /* {{{ */
1093 {
1094 int i;
1095
1096 if (!PHPDBG_G(in_execution)) {
1097 phpdbg_error("inactive", "type=\"noexec\"", "Not executing!");
1098 return SUCCESS;
1099 }
1100
1101 if (param) {
1102 i = param->num;
1103 zend_object **obj = EG(objects_store).object_buckets + i;
1104 if (i < EG(objects_store).top && *obj && IS_OBJ_VALID(*obj) && (*obj)->ce == zend_ce_generator) {
1105 zend_generator *gen = (zend_generator *) *obj;
1106 if (gen->execute_data) {
1107 if (zend_generator_get_current(gen)->flags & ZEND_GENERATOR_CURRENTLY_RUNNING) {
1108 phpdbg_error("generator", "type=\"running\"", "Generator currently running");
1109 } else {
1110 phpdbg_open_generator_frame(gen);
1111 }
1112 } else {
1113 phpdbg_error("generator", "type=\"closed\"", "Generator already closed");
1114 }
1115 } else {
1116 phpdbg_error("invalidarg", "", "Invalid object handle");
1117 }
1118 } else {
1119 for (i = 0; i < EG(objects_store).top; i++) {
1120 zend_object *obj = EG(objects_store).object_buckets[i];
1121 if (obj && IS_OBJ_VALID(obj) && obj->ce == zend_ce_generator) {
1122 zend_generator *gen = (zend_generator *) obj, *current = zend_generator_get_current(gen);
1123 if (gen->execute_data) {
1124 zend_string *s = phpdbg_compile_stackframe(gen->execute_data);
1125 phpdbg_out("#%d: %.*s", i, (int) ZSTR_LEN(s), ZSTR_VAL(s));
1126 zend_string_release(s);
1127 if (gen != current) {
1128 if (gen->node.parent != current) {
1129 phpdbg_out(" with direct parent #%d and", gen->node.parent->std.handle);
1130 }
1131 phpdbg_out(" executing #%d currently", current->std.handle);
1132 }
1133 phpdbg_out("\n");
1134 }
1135 }
1136 }
1137 }
1138
1139 return SUCCESS;
1140 } /* }}} */
1141
PHPDBG_COMMAND(print)1142 PHPDBG_COMMAND(print) /* {{{ */
1143 {
1144 if (!param || param->type == EMPTY_PARAM) {
1145 return phpdbg_do_print_stack(param);
1146 } else switch (param->type) {
1147 case STR_PARAM:
1148 return phpdbg_do_print_func(param);
1149 case METHOD_PARAM:
1150 return phpdbg_do_print_method(param);
1151 default:
1152 phpdbg_error("print", "type=\"invalidarg\"", "Invalid arguments to print, expected nothing, function name or method name");
1153 return SUCCESS;
1154 }
1155 } /* }}} */
1156
PHPDBG_COMMAND(info)1157 PHPDBG_COMMAND(info) /* {{{ */
1158 {
1159 phpdbg_out("Execution Context Information\n\n");
1160 phpdbg_xml("<printinfo %r>");
1161 #ifdef HAVE_PHPDBG_READLINE
1162 # ifdef HAVE_LIBREADLINE
1163 phpdbg_writeln("info", "readline=\"yes\"", "Readline yes");
1164 # else
1165 phpdbg_writeln("info", "readline=\"no\"", "Readline no");
1166 # endif
1167 # ifdef HAVE_LIBEDIT
1168 phpdbg_writeln("info", "libedit=\"yes\"", "Libedit yes");
1169 # else
1170 phpdbg_writeln("info", "libedit=\"no\"", "Libedit no");
1171 # endif
1172 #else
1173 phpdbg_writeln("info", "readline=\"unavailable\"", "Readline unavailable");
1174 #endif
1175
1176 phpdbg_writeln("info", "context=\"%s\"", "Exec %s", PHPDBG_G(exec) ? PHPDBG_G(exec) : "none");
1177 phpdbg_writeln("info", "compiled=\"%s\"", "Compiled %s", PHPDBG_G(ops) ? "yes" : "no");
1178 phpdbg_writeln("info", "stepping=\"%s\"", "Stepping %s", (PHPDBG_G(flags) & PHPDBG_IS_STEPPING) ? "on" : "off");
1179 phpdbg_writeln("info", "quiet=\"%s\"", "Quietness %s", (PHPDBG_G(flags) & PHPDBG_IS_QUIET) ? "on" : "off");
1180 phpdbg_writeln("info", "oplog=\"%s\"", "Oplog %s", PHPDBG_G(oplog) ? "on" : "off");
1181
1182 if (PHPDBG_G(ops)) {
1183 phpdbg_writeln("info", "ops=\"%d\"", "Opcodes %d", PHPDBG_G(ops)->last);
1184 phpdbg_writeln("info", "vars=\"%d\"", "Variables %d", PHPDBG_G(ops)->last_var ? PHPDBG_G(ops)->last_var - 1 : 0);
1185 }
1186
1187 phpdbg_writeln("info", "executing=\"%d\"", "Executing %s", PHPDBG_G(in_execution) ? "yes" : "no");
1188 if (PHPDBG_G(in_execution)) {
1189 phpdbg_writeln("info", "vmret=\"%d\"", "VM Return %d", PHPDBG_G(vmret));
1190 }
1191
1192 phpdbg_writeln("info", "classes=\"%d\"", "Classes %d", zend_hash_num_elements(EG(class_table)));
1193 phpdbg_writeln("info", "functions=\"%d\"", "Functions %d", zend_hash_num_elements(EG(function_table)));
1194 phpdbg_writeln("info", "constants=\"%d\"", "Constants %d", zend_hash_num_elements(EG(zend_constants)));
1195 phpdbg_writeln("info", "includes=\"%d\"", "Included %d", zend_hash_num_elements(&EG(included_files)));
1196 phpdbg_xml("</printinfo>");
1197
1198 return SUCCESS;
1199 } /* }}} */
1200
PHPDBG_COMMAND(set)1201 PHPDBG_COMMAND(set) /* {{{ */
1202 {
1203 phpdbg_error("set", "type=\"toofewargs\" expected=\"1\"", "No set command selected!");
1204
1205 return SUCCESS;
1206 } /* }}} */
1207
PHPDBG_COMMAND(break)1208 PHPDBG_COMMAND(break) /* {{{ */
1209 {
1210 if (!param) {
1211 if (PHPDBG_G(exec)) {
1212 phpdbg_set_breakpoint_file(
1213 zend_get_executed_filename(),
1214 strlen(zend_get_executed_filename()),
1215 zend_get_executed_lineno());
1216 } else {
1217 phpdbg_error("inactive", "type=\"noexec\"", "Execution context not set!");
1218 }
1219 } else switch (param->type) {
1220 case ADDR_PARAM:
1221 phpdbg_set_breakpoint_opline(param->addr);
1222 break;
1223 case NUMERIC_PARAM:
1224 if (PHPDBG_G(exec)) {
1225 phpdbg_set_breakpoint_file(phpdbg_current_file(), strlen(phpdbg_current_file()), param->num);
1226 } else {
1227 phpdbg_error("inactive", "type=\"noexec\"", "Execution context not set!");
1228 }
1229 break;
1230 case METHOD_PARAM:
1231 phpdbg_set_breakpoint_method(param->method.class, param->method.name);
1232 break;
1233 case NUMERIC_METHOD_PARAM:
1234 phpdbg_set_breakpoint_method_opline(param->method.class, param->method.name, param->num);
1235 break;
1236 case NUMERIC_FUNCTION_PARAM:
1237 phpdbg_set_breakpoint_function_opline(param->str, param->num);
1238 break;
1239 case FILE_PARAM:
1240 phpdbg_set_breakpoint_file(param->file.name, 0, param->file.line);
1241 break;
1242 case NUMERIC_FILE_PARAM:
1243 phpdbg_set_breakpoint_file_opline(param->file.name, param->file.line);
1244 break;
1245 case COND_PARAM:
1246 phpdbg_set_breakpoint_expression(param->str, param->len);
1247 break;
1248 case STR_PARAM:
1249 phpdbg_set_breakpoint_symbol(param->str, param->len);
1250 break;
1251 case OP_PARAM:
1252 phpdbg_set_breakpoint_opcode(param->str, param->len);
1253 break;
1254
1255 phpdbg_default_switch_case();
1256 }
1257
1258 return SUCCESS;
1259 } /* }}} */
1260
PHPDBG_COMMAND(sh)1261 PHPDBG_COMMAND(sh) /* {{{ */
1262 {
1263 FILE *fd = NULL;
1264 if ((fd=VCWD_POPEN((char*)param->str, "w"))) {
1265 /* TODO: do something perhaps ?? do we want input ?? */
1266 pclose(fd);
1267 } else {
1268 phpdbg_error("sh", "type=\"failure\" smd=\"%s\"", "Failed to execute %s", param->str);
1269 }
1270
1271 return SUCCESS;
1272 } /* }}} */
1273
add_module_info(zend_module_entry * module)1274 static int add_module_info(zend_module_entry *module) /* {{{ */ {
1275 phpdbg_write("module", "name=\"%s\"", "%s\n", module->name);
1276 return 0;
1277 }
1278 /* }}} */
1279
add_zendext_info(zend_extension * ext)1280 static int add_zendext_info(zend_extension *ext) /* {{{ */ {
1281 phpdbg_write("extension", "name=\"%s\"", "%s\n", ext->name);
1282 return 0;
1283 }
1284 /* }}} */
1285
1286 #ifdef HAVE_LIBDL
phpdbg_load_module_or_extension(char ** path,char ** name)1287 PHPDBG_API const char *phpdbg_load_module_or_extension(char **path, char **name) /* {{{ */ {
1288 DL_HANDLE handle;
1289 char *extension_dir;
1290
1291 extension_dir = INI_STR("extension_dir");
1292
1293 if (strchr(*path, '/') != NULL || strchr(*path, DEFAULT_SLASH) != NULL) {
1294 /* path is fine */
1295 } else if (extension_dir && extension_dir[0]) {
1296 char *libpath;
1297 int extension_dir_len = strlen(extension_dir);
1298 if (IS_SLASH(extension_dir[extension_dir_len-1])) {
1299 spprintf(&libpath, 0, "%s%s", extension_dir, *path); /* SAFE */
1300 } else {
1301 spprintf(&libpath, 0, "%s%c%s", extension_dir, DEFAULT_SLASH, *path); /* SAFE */
1302 }
1303 efree(*path);
1304 *path = libpath;
1305 } else {
1306 phpdbg_error("dl", "type=\"relpath\"", "Not a full path given or extension_dir ini setting is not set");
1307
1308 return NULL;
1309 }
1310
1311 handle = DL_LOAD(*path);
1312
1313 if (!handle) {
1314 #ifdef PHP_WIN32
1315 char *err = GET_DL_ERROR();
1316 if (err && err[0]) {
1317 phpdbg_error("dl", "type=\"unknown\"", "%s", err);
1318 LocalFree(err);
1319 } else {
1320 phpdbg_error("dl", "type=\"unknown\"", "Unknown reason");
1321 }
1322 #else
1323 phpdbg_error("dl", "type=\"unknown\"", "%s", GET_DL_ERROR());
1324 #endif
1325 return NULL;
1326 }
1327
1328 #if ZEND_EXTENSIONS_SUPPORT
1329 do {
1330 zend_extension *new_extension;
1331 zend_extension_version_info *extension_version_info;
1332
1333 extension_version_info = (zend_extension_version_info *) DL_FETCH_SYMBOL(handle, "extension_version_info");
1334 if (!extension_version_info) {
1335 extension_version_info = (zend_extension_version_info *) DL_FETCH_SYMBOL(handle, "_extension_version_info");
1336 }
1337 new_extension = (zend_extension *) DL_FETCH_SYMBOL(handle, "zend_extension_entry");
1338 if (!new_extension) {
1339 new_extension = (zend_extension *) DL_FETCH_SYMBOL(handle, "_zend_extension_entry");
1340 }
1341 if (!extension_version_info || !new_extension) {
1342 break;
1343 }
1344 if (extension_version_info->zend_extension_api_no != ZEND_EXTENSION_API_NO &&(!new_extension->api_no_check || new_extension->api_no_check(ZEND_EXTENSION_API_NO) != SUCCESS)) {
1345 phpdbg_error("dl", "type=\"wrongapi\" extension=\"%s\" apineeded=\"%d\" apiinstalled=\"%d\"", "%s requires Zend Engine API version %d, which does not match the installed Zend Engine API version %d", new_extension->name, extension_version_info->zend_extension_api_no, ZEND_EXTENSION_API_NO);
1346
1347 goto quit;
1348 } else if (strcmp(ZEND_EXTENSION_BUILD_ID, extension_version_info->build_id) && (!new_extension->build_id_check || new_extension->build_id_check(ZEND_EXTENSION_BUILD_ID) != SUCCESS)) {
1349 phpdbg_error("dl", "type=\"wrongbuild\" extension=\"%s\" buildneeded=\"%s\" buildinstalled=\"%s\"", "%s was built with configuration %s, whereas running engine is %s", new_extension->name, extension_version_info->build_id, ZEND_EXTENSION_BUILD_ID);
1350
1351 goto quit;
1352 }
1353
1354 *name = new_extension->name;
1355
1356 zend_register_extension(new_extension, handle);
1357
1358 if (new_extension->startup) {
1359 if (new_extension->startup(new_extension) != SUCCESS) {
1360 phpdbg_error("dl", "type=\"startupfailure\" extension=\"%s\"", "Unable to startup Zend extension %s", new_extension->name);
1361
1362 goto quit;
1363 }
1364 zend_append_version_info(new_extension);
1365 }
1366
1367 return "Zend extension";
1368 } while (0);
1369 #endif
1370
1371 do {
1372 zend_module_entry *module_entry;
1373 zend_module_entry *(*get_module)(void);
1374
1375 get_module = (zend_module_entry *(*)(void)) DL_FETCH_SYMBOL(handle, "get_module");
1376 if (!get_module) {
1377 get_module = (zend_module_entry *(*)(void)) DL_FETCH_SYMBOL(handle, "_get_module");
1378 }
1379
1380 if (!get_module) {
1381 break;
1382 }
1383
1384 module_entry = get_module();
1385 *name = (char *) module_entry->name;
1386
1387 if (strcmp(ZEND_EXTENSION_BUILD_ID, module_entry->build_id)) {
1388 phpdbg_error("dl", "type=\"wrongbuild\" module=\"%s\" buildneeded=\"%s\" buildinstalled=\"%s\"", "%s was built with configuration %s, whereas running engine is %s", module_entry->name, module_entry->build_id, ZEND_EXTENSION_BUILD_ID);
1389
1390 goto quit;
1391 }
1392
1393 module_entry->type = MODULE_PERSISTENT;
1394 module_entry->module_number = zend_next_free_module();
1395 module_entry->handle = handle;
1396
1397 if ((module_entry = zend_register_module_ex(module_entry)) == NULL) {
1398 phpdbg_error("dl", "type=\"registerfailure\" module=\"%s\"", "Unable to register module %s", module_entry->name);
1399
1400 goto quit;
1401 }
1402
1403 if (zend_startup_module_ex(module_entry) == FAILURE) {
1404 phpdbg_error("dl", "type=\"startupfailure\" module=\"%s\"", "Unable to startup module %s", module_entry->name);
1405
1406 goto quit;
1407 }
1408
1409 if (module_entry->request_startup_func) {
1410 if (module_entry->request_startup_func(MODULE_PERSISTENT, module_entry->module_number) == FAILURE) {
1411 phpdbg_error("dl", "type=\"initfailure\" module=\"%s\"", "Unable to initialize module %s", module_entry->name);
1412
1413 goto quit;
1414 }
1415 }
1416
1417 return "module";
1418 } while (0);
1419
1420 phpdbg_error("dl", "type=\"nophpso\"", "This shared object is nor a Zend extension nor a module");
1421
1422 quit:
1423 DL_UNLOAD(handle);
1424 return NULL;
1425 }
1426 /* }}} */
1427 #endif
1428
PHPDBG_COMMAND(dl)1429 PHPDBG_COMMAND(dl) /* {{{ */
1430 {
1431 const char *type;
1432 char *name, *path;
1433
1434 if (!param || param->type == EMPTY_PARAM) {
1435 phpdbg_notice("dl", "extensiontype=\"Zend extension\"", "Zend extensions");
1436 zend_llist_apply(&zend_extensions, (llist_apply_func_t) add_zendext_info);
1437 phpdbg_out("\n");
1438 phpdbg_notice("dl", "extensiontype=\"module\"", "Modules");
1439 zend_hash_apply(&module_registry, (apply_func_t) add_module_info);
1440 } else switch (param->type) {
1441 case STR_PARAM:
1442 #ifdef HAVE_LIBDL
1443 path = estrndup(param->str, param->len);
1444
1445 phpdbg_activate_err_buf(1);
1446 if ((type = phpdbg_load_module_or_extension(&path, &name)) == NULL) {
1447 phpdbg_error("dl", "path=\"%s\" %b", "Could not load %s, not found or invalid zend extension / module: %b", path);
1448 efree(name);
1449 } else {
1450 phpdbg_notice("dl", "extensiontype=\"%s\" name=\"%s\" path=\"%s\"", "Successfully loaded the %s %s at path %s", type, name, path);
1451 }
1452 phpdbg_activate_err_buf(0);
1453 phpdbg_free_err_buf();
1454 efree(path);
1455 #else
1456 phpdbg_error("dl", "type=\"unsupported\" path=\"%.*s\"", "Cannot dynamically load %.*s - dynamic modules are not supported", (int) param->len, param->str);
1457 #endif
1458 break;
1459
1460 phpdbg_default_switch_case();
1461 }
1462
1463 return SUCCESS;
1464 } /* }}} */
1465
PHPDBG_COMMAND(source)1466 PHPDBG_COMMAND(source) /* {{{ */
1467 {
1468 zend_stat_t sb;
1469
1470 if (VCWD_STAT(param->str, &sb) != -1) {
1471 phpdbg_try_file_init(param->str, param->len, 0);
1472 } else {
1473 phpdbg_error("source", "type=\"notfound\" file=\"%s\"", "Failed to stat %s, file does not exist", param->str);
1474 }
1475
1476 return SUCCESS;
1477 } /* }}} */
1478
PHPDBG_COMMAND(export)1479 PHPDBG_COMMAND(export) /* {{{ */
1480 {
1481 FILE *handle = VCWD_FOPEN(param->str, "w+");
1482
1483 if (handle) {
1484 phpdbg_export_breakpoints(handle);
1485 fclose(handle);
1486 } else {
1487 phpdbg_error("export", "type=\"openfailure\" file=\"%s\"", "Failed to open or create %s, check path and permissions", param->str);
1488 }
1489
1490 return SUCCESS;
1491 } /* }}} */
1492
PHPDBG_COMMAND(register)1493 PHPDBG_COMMAND(register) /* {{{ */
1494 {
1495 zend_function *function;
1496 char *lcname = zend_str_tolower_dup(param->str, param->len);
1497 size_t lcname_len = strlen(lcname);
1498
1499 if (!zend_hash_str_exists(&PHPDBG_G(registered), lcname, lcname_len)) {
1500 if ((function = zend_hash_str_find_ptr(EG(function_table), lcname, lcname_len))) {
1501 zend_hash_str_update_ptr(&PHPDBG_G(registered), lcname, lcname_len, function);
1502 function_add_ref(function);
1503
1504 phpdbg_notice("register", "function=\"%s\"", "Registered %s", lcname);
1505 } else {
1506 phpdbg_error("register", "type=\"notfound\" function=\"%s\"", "The requested function (%s) could not be found", param->str);
1507 }
1508 } else {
1509 phpdbg_error("register", "type=\"inuse\" function=\"%s\"", "The requested name (%s) is already in use", lcname);
1510 }
1511
1512 efree(lcname);
1513 return SUCCESS;
1514 } /* }}} */
1515
PHPDBG_COMMAND(quit)1516 PHPDBG_COMMAND(quit) /* {{{ */
1517 {
1518 PHPDBG_G(flags) |= PHPDBG_IS_QUITTING;
1519 PHPDBG_G(flags) &= ~PHPDBG_IS_CLEANING;
1520
1521 return SUCCESS;
1522 } /* }}} */
1523
PHPDBG_COMMAND(clean)1524 PHPDBG_COMMAND(clean) /* {{{ */
1525 {
1526 if (PHPDBG_G(in_execution)) {
1527 if (phpdbg_ask_user_permission("Do you really want to clean your current environment?") == FAILURE) {
1528 return SUCCESS;
1529 }
1530 }
1531
1532 phpdbg_out("Cleaning Execution Environment\n");
1533 phpdbg_xml("<cleaninfo %r>");
1534
1535 phpdbg_writeln("clean", "classes=\"%d\"", "Classes %d", zend_hash_num_elements(EG(class_table)));
1536 phpdbg_writeln("clean", "functions=\"%d\"", "Functions %d", zend_hash_num_elements(EG(function_table)));
1537 phpdbg_writeln("clean", "constants=\"%d\"", "Constants %d", zend_hash_num_elements(EG(zend_constants)));
1538 phpdbg_writeln("clean", "includes=\"%d\"", "Includes %d", zend_hash_num_elements(&EG(included_files)));
1539
1540 phpdbg_clean(1, 0);
1541
1542 phpdbg_xml("</cleaninfo>");
1543
1544 return SUCCESS;
1545 } /* }}} */
1546
PHPDBG_COMMAND(clear)1547 PHPDBG_COMMAND(clear) /* {{{ */
1548 {
1549 phpdbg_out("Clearing Breakpoints\n");
1550 phpdbg_xml("<clearinfo %r>");
1551
1552 phpdbg_writeln("clear", "files=\"%d\"", "File %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE]));
1553 phpdbg_writeln("clear", "functions=\"%d\"", "Functions %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM]));
1554 phpdbg_writeln("clear", "methods=\"%d\"", "Methods %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD]));
1555 phpdbg_writeln("clear", "oplines=\"%d\"", "Oplines %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]));
1556 phpdbg_writeln("clear", "fileoplines=\"%d\"", "File oplines %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE]));
1557 phpdbg_writeln("clear", "functionoplines=\"%d\"", "Function oplines %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE]));
1558 phpdbg_writeln("clear", "methodoplines=\"%d\"", "Method oplines %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE]));
1559 phpdbg_writeln("clear", "eval=\"%d\"", "Conditionals %d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_COND]));
1560
1561 phpdbg_clear_breakpoints();
1562
1563 phpdbg_xml("</clearinfo>");
1564
1565 return SUCCESS;
1566 } /* }}} */
1567
PHPDBG_COMMAND(list)1568 PHPDBG_COMMAND(list) /* {{{ */
1569 {
1570 if (!param) {
1571 return PHPDBG_LIST_HANDLER(lines)(PHPDBG_COMMAND_ARGS);
1572 } else switch (param->type) {
1573 case NUMERIC_PARAM:
1574 return PHPDBG_LIST_HANDLER(lines)(PHPDBG_COMMAND_ARGS);
1575
1576 case FILE_PARAM:
1577 return PHPDBG_LIST_HANDLER(lines)(PHPDBG_COMMAND_ARGS);
1578
1579 case STR_PARAM:
1580 phpdbg_list_function_byname(param->str, param->len);
1581 break;
1582
1583 case METHOD_PARAM:
1584 return PHPDBG_LIST_HANDLER(method)(PHPDBG_COMMAND_ARGS);
1585
1586 phpdbg_default_switch_case();
1587 }
1588
1589 return SUCCESS;
1590 } /* }}} */
1591
PHPDBG_COMMAND(watch)1592 PHPDBG_COMMAND(watch) /* {{{ */
1593 {
1594 if (!param || param->type == EMPTY_PARAM) {
1595 phpdbg_list_watchpoints();
1596 } else switch (param->type) {
1597 case STR_PARAM:
1598 phpdbg_create_var_watchpoint(param->str, param->len);
1599 break;
1600
1601 phpdbg_default_switch_case();
1602 }
1603
1604 return SUCCESS;
1605 } /* }}} */
1606
phpdbg_interactive(zend_bool allow_async_unsafe,char * input)1607 int phpdbg_interactive(zend_bool allow_async_unsafe, char *input) /* {{{ */
1608 {
1609 int ret = SUCCESS;
1610 phpdbg_param_t stack;
1611
1612 PHPDBG_G(flags) |= PHPDBG_IS_INTERACTIVE;
1613
1614 while (ret == SUCCESS || ret == FAILURE) {
1615 if (PHPDBG_G(flags) & PHPDBG_IS_STOPPING) {
1616 zend_bailout();
1617 }
1618
1619 if (!input && !(input = phpdbg_read_input(NULL))) {
1620 break;
1621 }
1622
1623
1624 phpdbg_init_param(&stack, STACK_PARAM);
1625
1626 if (phpdbg_do_parse(&stack, input) <= 0) {
1627 phpdbg_activate_err_buf(1);
1628
1629 #ifdef PHP_WIN32
1630 #define PARA ((phpdbg_param_t *)stack.next)->type
1631 if (PHPDBG_G(flags) & PHPDBG_IS_REMOTE && (RUN_PARAM == PARA || EVAL_PARAM == PARA)) {
1632 sigio_watcher_start();
1633 }
1634 #endif
1635 switch (ret = phpdbg_stack_execute(&stack, allow_async_unsafe)) {
1636 case FAILURE:
1637 if (!(PHPDBG_G(flags) & PHPDBG_IS_STOPPING)) {
1638 if (!allow_async_unsafe || phpdbg_call_register(&stack) == FAILURE) {
1639 phpdbg_output_err_buf(NULL, "%b", "%b");
1640 }
1641 }
1642 break;
1643
1644 case PHPDBG_LEAVE:
1645 case PHPDBG_FINISH:
1646 case PHPDBG_UNTIL:
1647 case PHPDBG_NEXT: {
1648 phpdbg_activate_err_buf(0);
1649 phpdbg_free_err_buf();
1650 if (!PHPDBG_G(in_execution) && !(PHPDBG_G(flags) & PHPDBG_IS_STOPPING)) {
1651 phpdbg_error("command", "type=\"noexec\"", "Not running");
1652 }
1653 break;
1654 }
1655 }
1656
1657 phpdbg_activate_err_buf(0);
1658 phpdbg_free_err_buf();
1659 #ifdef PHP_WIN32
1660 if (PHPDBG_G(flags) & PHPDBG_IS_REMOTE && (RUN_PARAM == PARA || EVAL_PARAM == PARA)) {
1661 sigio_watcher_stop();
1662 }
1663 #undef PARA
1664 #endif
1665 }
1666
1667 phpdbg_stack_free(&stack);
1668 phpdbg_destroy_input(&input);
1669 PHPDBG_G(req_id) = 0;
1670 input = NULL;
1671 }
1672
1673 if (input) {
1674 phpdbg_stack_free(&stack);
1675 phpdbg_destroy_input(&input);
1676 PHPDBG_G(req_id) = 0;
1677 }
1678
1679 if (PHPDBG_G(in_execution)) {
1680 phpdbg_restore_frame();
1681 }
1682
1683 PHPDBG_G(flags) &= ~PHPDBG_IS_INTERACTIVE;
1684
1685 phpdbg_print_changed_zvals();
1686
1687 return ret;
1688 } /* }}} */
1689
1690 /* code may behave weirdly if EG(exception) is set; thus backup it */
1691 #define DO_INTERACTIVE(allow_async_unsafe) do { \
1692 const zend_op *backup_opline; \
1693 const zend_op *before_ex; \
1694 if (exception) { \
1695 if (EG(current_execute_data) && EG(current_execute_data)->func && ZEND_USER_CODE(EG(current_execute_data)->func->common.type)) { \
1696 backup_opline = EG(current_execute_data)->opline; \
1697 } \
1698 before_ex = EG(opline_before_exception); \
1699 ++GC_REFCOUNT(exception); \
1700 zend_clear_exception(); \
1701 } \
1702 if (!(PHPDBG_G(flags) & PHPDBG_IN_EVAL)) { \
1703 const char *file_char = zend_get_executed_filename(); \
1704 zend_string *file = zend_string_init(file_char, strlen(file_char), 0); \
1705 phpdbg_list_file(file, 3, zend_get_executed_lineno()-1, zend_get_executed_lineno()); \
1706 efree(file); \
1707 } \
1708 \
1709 switch (phpdbg_interactive(allow_async_unsafe, NULL)) { \
1710 zval zv; \
1711 case PHPDBG_LEAVE: \
1712 case PHPDBG_FINISH: \
1713 case PHPDBG_UNTIL: \
1714 case PHPDBG_NEXT: \
1715 if (exception) { \
1716 if (EG(current_execute_data) && EG(current_execute_data)->func && ZEND_USER_CODE(EG(current_execute_data)->func->common.type) \
1717 && (backup_opline->opcode == ZEND_HANDLE_EXCEPTION || backup_opline->opcode == ZEND_CATCH)) { \
1718 EG(current_execute_data)->opline = backup_opline; \
1719 EG(exception) = exception; \
1720 } else { \
1721 Z_OBJ(zv) = exception; \
1722 zend_throw_exception_internal(&zv); \
1723 } \
1724 EG(opline_before_exception) = before_ex; \
1725 } \
1726 /* fallthrough */ \
1727 default: \
1728 goto next; \
1729 } \
1730 } while (0)
1731
phpdbg_execute_ex(zend_execute_data * execute_data)1732 void phpdbg_execute_ex(zend_execute_data *execute_data) /* {{{ */
1733 {
1734 zend_bool original_in_execution = PHPDBG_G(in_execution);
1735
1736 if ((PHPDBG_G(flags) & PHPDBG_IS_STOPPING) && !(PHPDBG_G(flags) & PHPDBG_IS_RUNNING)) {
1737 zend_bailout();
1738 }
1739
1740 PHPDBG_G(in_execution) = 1;
1741
1742 while (1) {
1743 zend_object *exception = EG(exception);
1744
1745 if ((PHPDBG_G(flags) & PHPDBG_BP_RESOLVE_MASK)) {
1746 /* resolve nth opline breakpoints */
1747 phpdbg_resolve_op_array_breaks(&execute_data->func->op_array);
1748 }
1749
1750 #ifdef ZEND_WIN32
1751 if (EG(timed_out)) {
1752 zend_timeout(0);
1753 }
1754 #endif
1755
1756 if (PHPDBG_G(flags) & PHPDBG_PREVENT_INTERACTIVE) {
1757 phpdbg_print_opline_ex(execute_data, 0);
1758 goto next;
1759 }
1760
1761 /* check for uncaught exceptions */
1762 if (exception && PHPDBG_G(handled_exception) != exception && !(PHPDBG_G(flags) & PHPDBG_IN_EVAL)) {
1763 zend_execute_data *prev_ex = execute_data;
1764 zval zv, rv;
1765 zend_string *file, *msg;
1766 zend_long line;
1767
1768 do {
1769 prev_ex = zend_generator_check_placeholder_frame(prev_ex);
1770 /* assuming that no internal functions will silently swallow exceptions ... */
1771 if (!prev_ex->func || !ZEND_USER_CODE(prev_ex->func->common.type)) {
1772 continue;
1773 }
1774
1775 if (phpdbg_check_caught_ex(prev_ex, exception)) {
1776 goto ex_is_caught;
1777 }
1778 } while ((prev_ex = prev_ex->prev_execute_data));
1779
1780 PHPDBG_G(handled_exception) = exception;
1781
1782 ZVAL_OBJ(&zv, exception);
1783 file = zval_get_string(zend_read_property(zend_get_exception_base(&zv), &zv, ZEND_STRL("file"), 1, &rv));
1784 line = zval_get_long(zend_read_property(zend_get_exception_base(&zv), &zv, ZEND_STRL("line"), 1, &rv));
1785 msg = zval_get_string(zend_read_property(zend_get_exception_base(&zv), &zv, ZEND_STRL("message"), 1, &rv));
1786
1787 phpdbg_error("exception",
1788 "name=\"%s\" file=\"%s\" line=\"" ZEND_LONG_FMT "\"",
1789 "Uncaught %s in %s on line " ZEND_LONG_FMT ": %.*s",
1790 ZSTR_VAL(exception->ce->name), ZSTR_VAL(file), line,
1791 ZSTR_LEN(msg) < 80 ? (int) ZSTR_LEN(msg) : 80, ZSTR_VAL(msg));
1792 zend_string_release(msg);
1793 zend_string_release(file);
1794
1795 DO_INTERACTIVE(1);
1796 }
1797 ex_is_caught:
1798
1799 /* allow conditional breakpoints and initialization to access the vm uninterrupted */
1800 if (PHPDBG_G(flags) & (PHPDBG_IN_COND_BP | PHPDBG_IS_INITIALIZING)) {
1801 /* skip possible breakpoints */
1802 goto next;
1803 }
1804
1805 /* not while in conditionals */
1806 phpdbg_print_opline_ex(execute_data, 0);
1807
1808 /* perform seek operation */
1809 if ((PHPDBG_G(flags) & PHPDBG_SEEK_MASK) && !(PHPDBG_G(flags) & PHPDBG_IN_EVAL)) {
1810 /* current address */
1811 zend_ulong address = (zend_ulong) execute_data->opline;
1812
1813 if (PHPDBG_G(seek_ex) != execute_data) {
1814 if (PHPDBG_G(flags) & PHPDBG_IS_STEPPING) {
1815 goto stepping;
1816 }
1817 goto next;
1818 }
1819
1820 #define INDEX_EXISTS_CHECK (zend_hash_index_exists(&PHPDBG_G(seek), address) || (exception && phpdbg_check_caught_ex(execute_data, exception) == 0))
1821
1822 /* run to next line */
1823 if (PHPDBG_G(flags) & PHPDBG_IN_UNTIL) {
1824 if (INDEX_EXISTS_CHECK) {
1825 PHPDBG_G(flags) &= ~PHPDBG_IN_UNTIL;
1826 zend_hash_clean(&PHPDBG_G(seek));
1827 } else {
1828 /* skip possible breakpoints */
1829 goto next;
1830 }
1831 }
1832
1833 /* run to finish */
1834 if (PHPDBG_G(flags) & PHPDBG_IN_FINISH) {
1835 if (INDEX_EXISTS_CHECK) {
1836 PHPDBG_G(flags) &= ~PHPDBG_IN_FINISH;
1837 zend_hash_clean(&PHPDBG_G(seek));
1838 }
1839 /* skip possible breakpoints */
1840 goto next;
1841 }
1842
1843 /* break for leave */
1844 if (PHPDBG_G(flags) & PHPDBG_IN_LEAVE) {
1845 if (INDEX_EXISTS_CHECK) {
1846 PHPDBG_G(flags) &= ~PHPDBG_IN_LEAVE;
1847 zend_hash_clean(&PHPDBG_G(seek));
1848 phpdbg_notice("breakpoint", "id=\"leave\" file=\"%s\" line=\"%u\"", "Breaking for leave at %s:%u",
1849 zend_get_executed_filename(),
1850 zend_get_executed_lineno()
1851 );
1852 DO_INTERACTIVE(1);
1853 } else {
1854 /* skip possible breakpoints */
1855 goto next;
1856 }
1857 }
1858 }
1859
1860 if (PHPDBG_G(flags) & PHPDBG_IS_STEPPING && (PHPDBG_G(flags) & PHPDBG_STEP_OPCODE || execute_data->opline->lineno != PHPDBG_G(last_line))) {
1861 stepping:
1862 PHPDBG_G(flags) &= ~PHPDBG_IS_STEPPING;
1863 DO_INTERACTIVE(1);
1864 }
1865
1866 /* check if some watchpoint was hit */
1867 {
1868 if (phpdbg_print_changed_zvals() == SUCCESS) {
1869 DO_INTERACTIVE(1);
1870 }
1871 }
1872
1873 /* search for breakpoints */
1874 {
1875 phpdbg_breakbase_t *brake;
1876
1877 if ((PHPDBG_G(flags) & PHPDBG_BP_MASK)
1878 && (brake = phpdbg_find_breakpoint(execute_data))
1879 && (brake->type != PHPDBG_BREAK_FILE || execute_data->opline->lineno != PHPDBG_G(last_line))) {
1880 phpdbg_hit_breakpoint(brake, 1);
1881 DO_INTERACTIVE(1);
1882 }
1883 }
1884
1885 if (PHPDBG_G(flags) & PHPDBG_IS_SIGNALED) {
1886 PHPDBG_G(flags) &= ~PHPDBG_IS_SIGNALED;
1887
1888 phpdbg_out("\n");
1889 phpdbg_notice("signal", "type=\"SIGINT\"", "Program received signal SIGINT");
1890 DO_INTERACTIVE(1);
1891 }
1892
1893 next:
1894
1895 PHPDBG_G(last_line) = execute_data->opline->lineno;
1896
1897 /* stupid hack to make zend_do_fcall_common_helper return ZEND_VM_ENTER() instead of recursively calling zend_execute() and eventually segfaulting */
1898 if ((execute_data->opline->opcode == ZEND_DO_FCALL ||
1899 execute_data->opline->opcode == ZEND_DO_UCALL ||
1900 execute_data->opline->opcode == ZEND_DO_FCALL_BY_NAME) &&
1901 execute_data->call->func->type == ZEND_USER_FUNCTION) {
1902 zend_execute_ex = execute_ex;
1903 }
1904 PHPDBG_G(vmret) = zend_vm_call_opcode_handler(execute_data);
1905 zend_execute_ex = phpdbg_execute_ex;
1906
1907 if (PHPDBG_G(vmret) != 0) {
1908 if (PHPDBG_G(vmret) < 0) {
1909 PHPDBG_G(in_execution) = original_in_execution;
1910 return;
1911 } else {
1912 execute_data = EG(current_execute_data);
1913 }
1914 }
1915 }
1916 zend_error_noreturn(E_ERROR, "Arrived at end of main loop which shouldn't happen");
1917 } /* }}} */
1918
1919 /* only if *not* interactive and while executing */
phpdbg_force_interruption(void)1920 void phpdbg_force_interruption(void) /* {{{ */ {
1921 zend_object *exception = EG(exception);
1922 zend_execute_data *data = EG(current_execute_data); /* should be always readable if not NULL */
1923
1924 PHPDBG_G(flags) |= PHPDBG_IN_SIGNAL_HANDLER;
1925
1926 if (data) {
1927 if (data->func) {
1928 if (ZEND_USER_CODE(data->func->type)) {
1929 phpdbg_notice("hardinterrupt", "opline=\"%p\" num=\"%lu\" file=\"%s\" line=\"%u\"", "Current opline: %p (op #%lu) in %s:%u", data->opline, (data->opline - data->func->op_array.opcodes) / sizeof(data->opline), data->func->op_array.filename->val, data->opline->lineno);
1930 } else if (data->func->internal_function.function_name) {
1931 phpdbg_notice("hardinterrupt", "func=\"%s\"", "Current opline: in internal function %s", data->func->internal_function.function_name->val);
1932 } else {
1933 phpdbg_notice("hardinterrupt", "", "Current opline: executing internal code");
1934 }
1935 } else {
1936 phpdbg_notice("hardinterrupt", "opline=\"%p\"", "Current opline: %p (op_array information unavailable)", data->opline);
1937 }
1938 } else {
1939 phpdbg_notice("hardinterrupt", "", "No information available about executing context");
1940 }
1941
1942 DO_INTERACTIVE(0);
1943
1944 next:
1945 PHPDBG_G(flags) &= ~PHPDBG_IN_SIGNAL_HANDLER;
1946
1947 if (PHPDBG_G(flags) & PHPDBG_IS_STOPPING) {
1948 zend_bailout();
1949 }
1950 }
1951 /* }}} */
1952
PHPDBG_COMMAND(eol)1953 PHPDBG_COMMAND(eol) /* {{{ */
1954 {
1955 if (!param || param->type == EMPTY_PARAM) {
1956 phpdbg_notice("eol", "argument required", "argument required");
1957 } else switch (param->type) {
1958 case STR_PARAM:
1959 if (FAILURE == phpdbg_eol_global_update(param->str)) {
1960 phpdbg_notice("eol", "unknown EOL name '%s', give crlf, lf, cr", "unknown EOL name '%s', give crlf, lf, cr", param->str);
1961 }
1962 break;
1963
1964 phpdbg_default_switch_case();
1965 }
1966
1967 return SUCCESS;
1968 } /* }}} */
1969
