root/sapi/phpdbg/phpdbg_utils.c

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DEFINITIONS

This source file includes following definitions.
  1. phpdbg_is_numeric
  2. phpdbg_is_empty
  3. phpdbg_is_addr
  4. phpdbg_is_class_method
  5. phpdbg_resolve_path
  6. phpdbg_current_file
  7. phpdbg_get_function
  8. phpdbg_trim
  9. phpdbg_get_color
  10. phpdbg_set_color
  11. phpdbg_set_color_ex
  12. phpdbg_get_colors
  13. phpdbg_get_element
  14. phpdbg_set_prompt
  15. phpdbg_get_prompt
  16. phpdbg_rebuild_symtable
  17. phpdbg_get_terminal_width
  18. phpdbg_get_terminal_height
  19. phpdbg_set_async_io
  20. phpdbg_safe_class_lookup
  21. phpdbg_get_property_key
  22. phpdbg_parse_variable_arg_wrapper
  23. phpdbg_parse_variable
  24. phpdbg_parse_variable_with_arg
  25. phpdbg_is_auto_global
  26. phpdbg_xml_array_element_dump
  27. phpdbg_xml_object_property_dump
  28. phpdbg_xml_var_dump
  29. phpdbg_check_caught_ex
  30. phpdbg_short_zval_print

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PHP Version 7                                                        |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 1997-2016 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 "zend.h"
  22 
  23 #include "php.h"
  24 #include "phpdbg.h"
  25 #include "phpdbg_opcode.h"
  26 #include "phpdbg_utils.h"
  27 #include "ext/standard/php_string.h"
  28 
  29 /* FASYNC under Solaris */
  30 #ifdef HAVE_SYS_FILE_H
  31 # include <sys/file.h>
  32 #endif
  33 
  34 #ifdef HAVE_SYS_IOCTL_H
  35 # include "sys/ioctl.h"
  36 # ifndef GWINSZ_IN_SYS_IOCTL
  37 #  include <termios.h>
  38 # endif
  39 #endif
  40 
  41 ZEND_EXTERN_MODULE_GLOBALS(phpdbg)
  42 
  43 /* {{{ color structures */
  44 const static phpdbg_color_t colors[] = {
  45         PHPDBG_COLOR_D("none",             "0;0"),
  46 
  47         PHPDBG_COLOR_D("white",            "0;64"),
  48         PHPDBG_COLOR_D("white-bold",       "1;64"),
  49         PHPDBG_COLOR_D("white-underline",  "4;64"),
  50         PHPDBG_COLOR_D("red",              "0;31"),
  51         PHPDBG_COLOR_D("red-bold",         "1;31"),
  52         PHPDBG_COLOR_D("red-underline",    "4;31"),
  53         PHPDBG_COLOR_D("green",            "0;32"),
  54         PHPDBG_COLOR_D("green-bold",       "1;32"),
  55         PHPDBG_COLOR_D("green-underline",  "4;32"),
  56         PHPDBG_COLOR_D("yellow",           "0;33"),
  57         PHPDBG_COLOR_D("yellow-bold",      "1;33"),
  58         PHPDBG_COLOR_D("yellow-underline", "4;33"),
  59         PHPDBG_COLOR_D("blue",             "0;34"),
  60         PHPDBG_COLOR_D("blue-bold",        "1;34"),
  61         PHPDBG_COLOR_D("blue-underline",   "4;34"),
  62         PHPDBG_COLOR_D("purple",           "0;35"),
  63         PHPDBG_COLOR_D("purple-bold",      "1;35"),
  64         PHPDBG_COLOR_D("purple-underline", "4;35"),
  65         PHPDBG_COLOR_D("cyan",             "0;36"),
  66         PHPDBG_COLOR_D("cyan-bold",        "1;36"),
  67         PHPDBG_COLOR_D("cyan-underline",   "4;36"),
  68         PHPDBG_COLOR_D("black",            "0;30"),
  69         PHPDBG_COLOR_D("black-bold",       "1;30"),
  70         PHPDBG_COLOR_D("black-underline",  "4;30"),
  71         PHPDBG_COLOR_END
  72 }; /* }}} */
  73 
  74 /* {{{ */
  75 const static phpdbg_element_t elements[] = {
  76         PHPDBG_ELEMENT_D("prompt", PHPDBG_COLOR_PROMPT),
  77         PHPDBG_ELEMENT_D("error", PHPDBG_COLOR_ERROR),
  78         PHPDBG_ELEMENT_D("notice", PHPDBG_COLOR_NOTICE),
  79         PHPDBG_ELEMENT_END
  80 }; /* }}} */
  81 
  82 PHPDBG_API int phpdbg_is_numeric(const char *str) /* {{{ */
  83 {
  84         if (!str)
  85                 return 0;
  86 
  87         for (; *str; str++) {
  88                 if (isspace(*str) || *str == '-') {
  89                         continue;
  90                 }
  91                 return isdigit(*str);
  92         }
  93         return 0;
  94 } /* }}} */
  95 
  96 PHPDBG_API int phpdbg_is_empty(const char *str) /* {{{ */
  97 {
  98         if (!str)
  99                 return 1;
 100 
 101         for (; *str; str++) {
 102                 if (isspace(*str)) {
 103                         continue;
 104                 }
 105                 return 0;
 106         }
 107         return 1;
 108 } /* }}} */
 109 
 110 PHPDBG_API int phpdbg_is_addr(const char *str) /* {{{ */
 111 {
 112         return str[0] && str[1] && memcmp(str, "0x", 2) == 0;
 113 } /* }}} */
 114 
 115 PHPDBG_API int phpdbg_is_class_method(const char *str, size_t len, char **class, char **method) /* {{{ */
 116 {
 117         char *sep = NULL;
 118 
 119         if (strstr(str, "#") != NULL)
 120                 return 0;
 121 
 122         if (strstr(str, " ") != NULL)
 123                 return 0;
 124 
 125         sep = strstr(str, "::");
 126 
 127         if (!sep || sep == str || sep+2 == str+len-1) {
 128                 return 0;
 129         }
 130 
 131         if (class != NULL) {
 132 
 133                 if (str[0] == '\\') {
 134                         str++;
 135                         len--;
 136                 }
 137 
 138                 *class = estrndup(str, sep - str);
 139                 (*class)[sep - str] = 0;
 140         }
 141 
 142         if (method != NULL) {
 143                 *method = estrndup(sep+2, str + len - (sep + 2));
 144         }
 145 
 146         return 1;
 147 } /* }}} */
 148 
 149 PHPDBG_API char *phpdbg_resolve_path(const char *path) /* {{{ */
 150 {
 151         char resolved_name[MAXPATHLEN];
 152 
 153         if (expand_filepath(path, resolved_name) == NULL) {
 154                 return NULL;
 155         }
 156 
 157         return estrdup(resolved_name);
 158 } /* }}} */
 159 
 160 PHPDBG_API const char *phpdbg_current_file(void) /* {{{ */
 161 {
 162         const char *file = zend_get_executed_filename();
 163 
 164         if (memcmp(file, "[no active file]", sizeof("[no active file]")) == 0) {
 165                 return PHPDBG_G(exec);
 166         }
 167 
 168         return file;
 169 } /* }}} */
 170 
 171 PHPDBG_API const zend_function *phpdbg_get_function(const char *fname, const char *cname) /* {{{ */
 172 {
 173         zend_function *func = NULL;
 174         zend_string *lfname = zend_string_init(fname, strlen(fname), 0);
 175         zend_string *tmp = zend_string_tolower(lfname);
 176         zend_string_release(lfname);
 177         lfname = tmp;
 178 
 179         if (cname) {
 180                 zend_class_entry *ce;
 181                 zend_string *lcname = zend_string_init(cname, strlen(cname), 0);
 182                 tmp = zend_string_tolower(lcname);
 183                 zend_string_release(lcname);
 184                 lcname = tmp;
 185                 ce = zend_lookup_class(lcname);
 186 
 187                 zend_string_release(lcname);
 188 
 189                 if (ce) {
 190                         func = zend_hash_find_ptr(&ce->function_table, lfname);
 191                 }
 192         } else {
 193                 func = zend_hash_find_ptr(EG(function_table), lfname);
 194         }
 195 
 196         zend_string_release(lfname);
 197         return func;
 198 } /* }}} */
 199 
 200 PHPDBG_API char *phpdbg_trim(const char *str, size_t len, size_t *new_len) /* {{{ */
 201 {
 202         const char *p = str;
 203         char *new = NULL;
 204 
 205         while (p && isspace(*p)) {
 206                 ++p;
 207                 --len;
 208         }
 209 
 210         while (*p && isspace(*(p + len -1))) {
 211                 --len;
 212         }
 213 
 214         if (len == 0) {
 215                 new = estrndup("", sizeof(""));
 216                 *new_len = 0;
 217         } else {
 218                 new = estrndup(p, len);
 219                 *(new + len) = '\0';
 220 
 221                 if (new_len) {
 222                         *new_len = len;
 223                 }
 224         }
 225 
 226         return new;
 227 
 228 } /* }}} */
 229 
 230 PHPDBG_API const phpdbg_color_t *phpdbg_get_color(const char *name, size_t name_length) /* {{{ */
 231 {
 232         const phpdbg_color_t *color = colors;
 233 
 234         while (color && color->name) {
 235                 if (name_length == color->name_length &&
 236                         memcmp(name, color->name, name_length) == SUCCESS) {
 237                         phpdbg_debug("phpdbg_get_color(%s, %lu): %s", name, name_length, color->code);
 238                         return color;
 239                 }
 240                 ++color;
 241         }
 242 
 243         phpdbg_debug("phpdbg_get_color(%s, %lu): failed", name, name_length);
 244 
 245         return NULL;
 246 } /* }}} */
 247 
 248 PHPDBG_API void phpdbg_set_color(int element, const phpdbg_color_t *color) /* {{{ */
 249 {
 250         PHPDBG_G(colors)[element] = color;
 251 } /* }}} */
 252 
 253 PHPDBG_API void phpdbg_set_color_ex(int element, const char *name, size_t name_length) /* {{{ */
 254 {
 255         const phpdbg_color_t *color = phpdbg_get_color(name, name_length);
 256 
 257         if (color) {
 258                 phpdbg_set_color(element, color);
 259         } else PHPDBG_G(colors)[element] = colors;
 260 } /* }}} */
 261 
 262 PHPDBG_API const phpdbg_color_t* phpdbg_get_colors(void) /* {{{ */
 263 {
 264         return colors;
 265 } /* }}} */
 266 
 267 PHPDBG_API int phpdbg_get_element(const char *name, size_t len) {
 268         const phpdbg_element_t *element = elements;
 269 
 270         while (element && element->name) {
 271                 if (len == element->name_length) {
 272                         if (strncasecmp(name, element->name, len) == SUCCESS) {
 273                                 return element->id;
 274                         }
 275                 }
 276                 element++;
 277         }
 278 
 279         return PHPDBG_COLOR_INVALID;
 280 }
 281 
 282 PHPDBG_API void phpdbg_set_prompt(const char *prompt) /* {{{ */
 283 {
 284         /* free formatted prompt */
 285         if (PHPDBG_G(prompt)[1]) {
 286                 free(PHPDBG_G(prompt)[1]);
 287                 PHPDBG_G(prompt)[1] = NULL;
 288         }
 289         /* free old prompt */
 290         if (PHPDBG_G(prompt)[0]) {
 291                 free(PHPDBG_G(prompt)[0]);
 292                 PHPDBG_G(prompt)[0] = NULL;
 293         }
 294 
 295         /* copy new prompt */
 296         PHPDBG_G(prompt)[0] = strdup(prompt);
 297 } /* }}} */
 298 
 299 PHPDBG_API const char *phpdbg_get_prompt(void) /* {{{ */
 300 {
 301         /* find cached prompt */
 302         if (PHPDBG_G(prompt)[1]) {
 303                 return PHPDBG_G(prompt)[1];
 304         }
 305 
 306         /* create cached prompt */
 307 #ifndef HAVE_LIBEDIT
 308         /* TODO: libedit doesn't seems to support coloured prompt */
 309         if ((PHPDBG_G(flags) & PHPDBG_IS_COLOURED)) {
 310                 ZEND_IGNORE_VALUE(asprintf(&PHPDBG_G(prompt)[1], "\033[%sm%s\033[0m ",
 311                         PHPDBG_G(colors)[PHPDBG_COLOR_PROMPT]->code,
 312                         PHPDBG_G(prompt)[0]));
 313         } else
 314 #endif
 315         {
 316                 ZEND_IGNORE_VALUE(asprintf(&PHPDBG_G(prompt)[1], "%s ", PHPDBG_G(prompt)[0]));
 317         }
 318 
 319         return PHPDBG_G(prompt)[1];
 320 } /* }}} */
 321 
 322 int phpdbg_rebuild_symtable(void) {
 323         if (!EG(current_execute_data) || !EG(current_execute_data)->func) {
 324                 phpdbg_error("inactive", "type=\"op_array\"", "No active op array!");
 325                 return FAILURE;
 326         }
 327 
 328         if (!zend_rebuild_symbol_table()) {
 329                 phpdbg_error("inactive", "type=\"symbol_table\"", "No active symbol table!");
 330                 return FAILURE;
 331         }
 332 
 333         return SUCCESS;
 334 }
 335 
 336 PHPDBG_API int phpdbg_get_terminal_width(void) /* {{{ */
 337 {
 338         int columns;
 339 #ifdef _WIN32
 340         CONSOLE_SCREEN_BUFFER_INFO csbi;
 341 
 342         GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
 343         columns = csbi.srWindow.Right - csbi.srWindow.Left + 1;
 344 #elif defined(HAVE_SYS_IOCTL_H) && defined(TIOCGWINSZ)
 345         struct winsize w;
 346 
 347         columns = ioctl(fileno(stdout), TIOCGWINSZ, &w) == 0 ? w.ws_col : 80;
 348 #else
 349         columns = 80;
 350 #endif
 351         return columns;
 352 } /* }}} */
 353 
 354 PHPDBG_API int phpdbg_get_terminal_height(void) /* {{{ */
 355 {
 356         int lines;
 357 #ifdef _WIN32
 358         CONSOLE_SCREEN_BUFFER_INFO csbi;
 359 
 360         GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
 361         lines = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
 362 #elif defined(HAVE_SYS_IOCTL_H) && defined(TIOCGWINSZ)
 363         struct winsize w;
 364 
 365         lines = ioctl(fileno(stdout), TIOCGWINSZ, &w) == 0 ? w.ws_row : 40;
 366 #else
 367         lines = 40;
 368 #endif
 369         return lines;
 370 } /* }}} */
 371 
 372 PHPDBG_API void phpdbg_set_async_io(int fd) {
 373 #if !defined(_WIN32) && defined(FASYNC)
 374         int flags;
 375         fcntl(STDIN_FILENO, F_SETOWN, getpid());
 376         flags = fcntl(STDIN_FILENO, F_GETFL);
 377         fcntl(STDIN_FILENO, F_SETFL, flags | FASYNC);
 378 #endif
 379 }
 380 
 381 int phpdbg_safe_class_lookup(const char *name, int name_length, zend_class_entry **ce) {
 382         if (PHPDBG_G(flags) & PHPDBG_IN_SIGNAL_HANDLER) {
 383                 char *lc_name, *lc_free;
 384                 int lc_length;
 385 
 386                 if (name == NULL || !name_length) {
 387                         return FAILURE;
 388                 }
 389 
 390                 lc_free = lc_name = emalloc(name_length + 1);
 391                 zend_str_tolower_copy(lc_name, name, name_length);
 392                 lc_length = name_length + 1;
 393 
 394                 if (lc_name[0] == '\\') {
 395                         lc_name += 1;
 396                         lc_length -= 1;
 397                 }
 398 
 399                 phpdbg_try_access {
 400                         *ce = zend_hash_str_find_ptr(EG(class_table), lc_name, lc_length);
 401                 } phpdbg_catch_access {
 402                         phpdbg_error("signalsegv", "class=\"%.*s\"", "Could not fetch class %.*s, invalid data source", name_length, name);
 403                 } phpdbg_end_try_access();
 404 
 405                 efree(lc_free);
 406         } else {
 407                 zend_string *str_name = zend_string_init(name, name_length, 0);
 408                 *ce = zend_lookup_class(str_name);
 409                 efree(str_name);
 410         }
 411 
 412         return *ce ? SUCCESS : FAILURE;
 413 }
 414 
 415 char *phpdbg_get_property_key(char *key) {
 416         if (*key != 0) {
 417                 return key;
 418         }
 419         return strchr(key + 1, 0) + 1;
 420 }
 421 
 422 static int phpdbg_parse_variable_arg_wrapper(char *name, size_t len, char *keyname, size_t keylen, HashTable *parent, zval *zv, phpdbg_parse_var_func callback) {
 423         return callback(name, len, keyname, keylen, parent, zv);
 424 }
 425 
 426 PHPDBG_API int phpdbg_parse_variable(char *input, size_t len, HashTable *parent, size_t i, phpdbg_parse_var_func callback, zend_bool silent) {
 427         return phpdbg_parse_variable_with_arg(input, len, parent, i, (phpdbg_parse_var_with_arg_func) phpdbg_parse_variable_arg_wrapper, NULL, silent, callback);
 428 }
 429 
 430 PHPDBG_API int phpdbg_parse_variable_with_arg(char *input, size_t len, HashTable *parent, size_t i, phpdbg_parse_var_with_arg_func callback, phpdbg_parse_var_with_arg_func step_cb, zend_bool silent, void *arg) {
 431         int ret = FAILURE;
 432         zend_bool new_index = 1;
 433         char *last_index;
 434         size_t index_len = 0;
 435         zval *zv;
 436 
 437         if (len < 2 || *input != '$') {
 438                 goto error;
 439         }
 440 
 441         while (i++ < len) {
 442                 if (i == len) {
 443                         new_index = 1;
 444                 } else {
 445                         switch (input[i]) {
 446                                 case '[':
 447                                         new_index = 1;
 448                                         break;
 449                                 case ']':
 450                                         break;
 451                                 case '>':
 452                                         if (last_index[index_len - 1] == '-') {
 453                                                 new_index = 1;
 454                                                 index_len--;
 455                                         }
 456                                         break;
 457 
 458                                 default:
 459                                         if (new_index) {
 460                                                 last_index = input + i;
 461                                                 new_index = 0;
 462                                         }
 463                                         if (input[i - 1] == ']') {
 464                                                 goto error;
 465                                         }
 466                                         index_len++;
 467                         }
 468                 }
 469 
 470                 if (new_index && index_len == 0) {
 471                         zend_ulong numkey;
 472                         zend_string *strkey;
 473                         ZEND_HASH_FOREACH_KEY_PTR(parent, numkey, strkey, zv) {
 474                                 while (Z_TYPE_P(zv) == IS_INDIRECT) {
 475                                         zv = Z_INDIRECT_P(zv);
 476                                 }
 477 
 478                                 if (i == len || (i == len - 1 && input[len - 1] == ']')) {
 479                                         char *key, *propkey;
 480                                         size_t namelen, keylen;
 481                                         char *name;
 482                                         char *keyname = estrndup(last_index, index_len);
 483                                         if (strkey) {
 484                                                 key = ZSTR_VAL(strkey);
 485                                                 keylen = ZSTR_LEN(strkey);
 486                                         } else {
 487                                                 keylen = spprintf(&key, 0, ZEND_ULONG_FMT, numkey);
 488                                         }
 489                                         propkey = phpdbg_get_property_key(key);
 490                                         name = emalloc(i + keylen + 2);
 491                                         namelen = sprintf(name, "%.*s%.*s%s", (int) i, input, (int) (keylen - (propkey - key)), propkey, input[len - 1] == ']'?"]":"");
 492                                         if (!strkey) {
 493                                                 efree(key);
 494                                         }
 495 
 496                                         ret = callback(name, namelen, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 497                                 } else retry_ref: if (Z_TYPE_P(zv) == IS_OBJECT) {
 498                                         if (step_cb) {
 499                                                 char *name = estrndup(input, i);
 500                                                 char *keyname = estrndup(last_index, index_len);
 501 
 502                                                 ret = step_cb(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 503                                         }
 504 
 505                                         phpdbg_parse_variable_with_arg(input, len, Z_OBJPROP_P(zv), i, callback, step_cb, silent, arg);
 506                                 } else if (Z_TYPE_P(zv) == IS_ARRAY) {
 507                                         if (step_cb) {
 508                                                 char *name = estrndup(input, i);
 509                                                 char *keyname = estrndup(last_index, index_len);
 510 
 511                                                 ret = step_cb(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 512                                         }
 513 
 514                                         phpdbg_parse_variable_with_arg(input, len, Z_ARRVAL_P(zv), i, callback, step_cb, silent, arg);
 515                                 } else if (Z_ISREF_P(zv)) {
 516                                         if (step_cb) {
 517                                                 char *name = estrndup(input, i);
 518                                                 char *keyname = estrndup(last_index, index_len);
 519 
 520                                                 ret = step_cb(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 521                                         }
 522 
 523                                         ZVAL_DEREF(zv);
 524                                         goto retry_ref;
 525                                 } else {
 526                                         /* Ignore silently */
 527                                 }
 528                         } ZEND_HASH_FOREACH_END();
 529                         return ret;
 530                 } else if (new_index) {
 531                         char last_chr = last_index[index_len];
 532                         last_index[index_len] = 0;
 533                         if (!(zv = zend_symtable_str_find(parent, last_index, index_len))) {
 534                                 if (!silent) {
 535                                         phpdbg_error("variable", "type=\"undefined\" variable=\"%.*s\"", "%.*s is undefined", (int) i, input);
 536                                 }
 537                                 return FAILURE;
 538                         }
 539                         while (Z_TYPE_P(zv) == IS_INDIRECT) {
 540                                 zv = Z_INDIRECT_P(zv);
 541                         }
 542 
 543                         last_index[index_len] = last_chr;
 544                         if (i == len) {
 545                                 char *name = estrndup(input, i);
 546                                 char *keyname = estrndup(last_index, index_len);
 547 
 548                                 ret = callback(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 549                         } else retry_ref_end: if (Z_TYPE_P(zv) == IS_OBJECT) {
 550                                 if (step_cb) {
 551                                         char *name = estrndup(input, i);
 552                                         char *keyname = estrndup(last_index, index_len);
 553 
 554                                         ret = step_cb(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 555                                 }
 556 
 557                                 parent = Z_OBJPROP_P(zv);
 558                         } else if (Z_TYPE_P(zv) == IS_ARRAY) {
 559                                 if (step_cb) {
 560                                         char *name = estrndup(input, i);
 561                                         char *keyname = estrndup(last_index, index_len);
 562 
 563                                         ret = step_cb(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 564                                 }
 565 
 566                                 parent = Z_ARRVAL_P(zv);
 567                         } else if (Z_ISREF_P(zv)) {
 568                                 if (step_cb) {
 569                                         char *name = estrndup(input, i);
 570                                         char *keyname = estrndup(last_index, index_len);
 571 
 572                                         ret = step_cb(name, i, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
 573                                 }
 574 
 575                                 ZVAL_DEREF(zv);
 576                                 goto retry_ref_end;
 577                         } else {
 578                                 phpdbg_error("variable", "type=\"notiterable\" variable=\"%.*s\"", "%.*s is nor an array nor an object", (int) (input[i] == '>' ? i - 1 : i), input);
 579                                 return FAILURE;
 580                         }
 581                         index_len = 0;
 582                 }
 583         }
 584 
 585         return ret;
 586         error:
 587                 phpdbg_error("variable", "type=\"invalidinput\"", "Malformed input");
 588                 return FAILURE;
 589 }
 590 
 591 int phpdbg_is_auto_global(char *name, int len) {
 592         return zend_is_auto_global_str(name, len);
 593 }
 594 
 595 static int phpdbg_xml_array_element_dump(zval *zv, zend_string *key, zend_ulong num) {
 596         phpdbg_xml("<element");
 597 
 598         phpdbg_try_access {
 599                 if (key) { /* string key */
 600                         phpdbg_xml(" name=\"%.*s\"", (int) ZSTR_LEN(key), ZSTR_VAL(key));
 601                 } else { /* numeric key */
 602                         phpdbg_xml(" name=\"%ld\"", num);
 603                 }
 604         } phpdbg_catch_access {
 605                 phpdbg_xml(" severity=\"error\" ></element>");
 606                 return 0;
 607         } phpdbg_end_try_access();
 608 
 609         phpdbg_xml(">");
 610 
 611         phpdbg_xml_var_dump(zv);
 612 
 613         phpdbg_xml("</element>");
 614 
 615         return 0;
 616 }
 617 
 618 static int phpdbg_xml_object_property_dump(zval *zv, zend_string *key, zend_ulong num) {
 619         phpdbg_xml("<property");
 620 
 621         phpdbg_try_access {
 622                 if (key) { /* string key */
 623                         const char *prop_name, *class_name;
 624                         int unmangle = zend_unmangle_property_name(key, &class_name, &prop_name);
 625 
 626                         if (class_name && unmangle == SUCCESS) {
 627                                 phpdbg_xml(" name=\"%s\"", prop_name);
 628                                 if (class_name[0] == '*') {
 629                                         phpdbg_xml(" protection=\"protected\"");
 630                                 } else {
 631                                         phpdbg_xml(" class=\"%s\" protection=\"private\"", class_name);
 632                                 }
 633                         } else {
 634                                 phpdbg_xml(" name=\"%.*s\" protection=\"public\"", (int) ZSTR_LEN(key), ZSTR_VAL(key));
 635                         }
 636                 } else { /* numeric key */
 637                         phpdbg_xml(" name=\"%ld\" protection=\"public\"", num);
 638                 }
 639         } phpdbg_catch_access {
 640                 phpdbg_xml(" severity=\"error\" ></property>");
 641                 return 0;
 642         } phpdbg_end_try_access();
 643 
 644         phpdbg_xml(">");
 645 
 646         phpdbg_xml_var_dump(zv);
 647 
 648         phpdbg_xml("</property>");
 649 
 650         return 0;
 651 }
 652 
 653 #define COMMON (is_ref ? "&" : "")
 654 
 655 PHPDBG_API void phpdbg_xml_var_dump(zval *zv) {
 656         HashTable *myht;
 657         zend_string *class_name, *key;
 658         zend_ulong num;
 659         zval *val;
 660         int (*element_dump_func)(zval *zv, zend_string *key, zend_ulong num);
 661         zend_bool is_ref = 0;
 662 
 663         int is_temp;
 664 
 665         phpdbg_try_access {
 666                 is_ref = Z_ISREF_P(zv) && GC_REFCOUNT(Z_COUNTED_P(zv)) > 1;
 667                 ZVAL_DEREF(zv);
 668 
 669                 switch (Z_TYPE_P(zv)) {
 670                         case IS_TRUE:
 671                                 phpdbg_xml("<bool refstatus=\"%s\" value=\"true\" />", COMMON);
 672                                 break;
 673                         case IS_FALSE:
 674                                 phpdbg_xml("<bool refstatus=\"%s\" value=\"false\" />", COMMON);
 675                                 break;
 676                         case IS_NULL:
 677                                 phpdbg_xml("<null refstatus=\"%s\" />", COMMON);
 678                                 break;
 679                         case IS_LONG:
 680                                 phpdbg_xml("<int refstatus=\"%s\" value=\"" ZEND_LONG_FMT "\" />", COMMON, Z_LVAL_P(zv));
 681                                 break;
 682                         case IS_DOUBLE:
 683                                 phpdbg_xml("<float refstatus=\"%s\" value=\"%.*G\" />", COMMON, (int) EG(precision), Z_DVAL_P(zv));
 684                                 break;
 685                         case IS_STRING:
 686                                 phpdbg_xml("<string refstatus=\"%s\" length=\"%zd\" value=\"%.*s\" />", COMMON, Z_STRLEN_P(zv), (int) Z_STRLEN_P(zv), Z_STRVAL_P(zv));
 687                                 break;
 688                         case IS_ARRAY:
 689                                 myht = Z_ARRVAL_P(zv);
 690                                 if (ZEND_HASH_APPLY_PROTECTION(myht) && ++myht->u.v.nApplyCount > 1) {
 691                                         phpdbg_xml("<recursion />");
 692                                         --myht->u.v.nApplyCount;
 693                                         break;
 694                                 }
 695                                 phpdbg_xml("<array refstatus=\"%s\" num=\"%d\">", COMMON, zend_hash_num_elements(myht));
 696                                 element_dump_func = phpdbg_xml_array_element_dump;
 697                                 is_temp = 0;
 698                                 goto head_done;
 699                         case IS_OBJECT:
 700                                 myht = Z_OBJDEBUG_P(zv, is_temp);
 701                                 if (myht && ++myht->u.v.nApplyCount > 1) {
 702                                         phpdbg_xml("<recursion />");
 703                                         --myht->u.v.nApplyCount;
 704                                         break;
 705                                 }
 706 
 707                                 class_name = Z_OBJ_HANDLER_P(zv, get_class_name)(Z_OBJ_P(zv));
 708                                 phpdbg_xml("<object refstatus=\"%s\" class=\"%.*s\" id=\"%d\" num=\"%d\">", COMMON, (int) ZSTR_LEN(class_name), ZSTR_VAL(class_name), Z_OBJ_HANDLE_P(zv), myht ? zend_hash_num_elements(myht) : 0);
 709                                 zend_string_release(class_name);
 710 
 711                                 element_dump_func = phpdbg_xml_object_property_dump;
 712 head_done:
 713                                 if (myht) {
 714                                         ZEND_HASH_FOREACH_KEY_VAL_IND(myht, num, key, val) {
 715                                                 element_dump_func(val, key, num);
 716                                         } ZEND_HASH_FOREACH_END();
 717                                         zend_hash_apply_with_arguments(myht, (apply_func_args_t) element_dump_func, 0);
 718                                         --myht->u.v.nApplyCount;
 719                                         if (is_temp) {
 720                                                 zend_hash_destroy(myht);
 721                                                 efree(myht);
 722                                         }
 723                                 }
 724                                 if (Z_TYPE_P(zv) == IS_ARRAY) {
 725                                         phpdbg_xml("</array>");
 726                                 } else {
 727                                         phpdbg_xml("</object>");
 728                                 }
 729                                 break;
 730                         case IS_RESOURCE: {
 731                                 const char *type_name = zend_rsrc_list_get_rsrc_type(Z_RES_P(zv));
 732                                 phpdbg_xml("<resource refstatus=\"%s\" id=\"%pd\" type=\"%s\" />", COMMON, Z_RES_P(zv)->handle, type_name ? type_name : "unknown");
 733                                 break;
 734                         }
 735                         default:
 736                                 break;
 737                 }
 738         } phpdbg_end_try_access();
 739 }
 740 
 741 PHPDBG_API zend_bool phpdbg_check_caught_ex(zend_execute_data *execute_data, zend_object *exception) {
 742         const zend_op *op;
 743         zend_op *cur;
 744         uint32_t op_num, i;
 745         zend_op_array *op_array = &execute_data->func->op_array;
 746 
 747         if (execute_data->opline >= EG(exception_op) && execute_data->opline < EG(exception_op) + 3) {
 748                 op = EG(opline_before_exception);
 749         } else {
 750                 op = execute_data->opline;
 751         }
 752 
 753         op_num = op - op_array->opcodes;
 754 
 755         for (i = 0; i < op_array->last_try_catch && op_array->try_catch_array[i].try_op <= op_num; i++) {
 756                 uint32_t catch = op_array->try_catch_array[i].catch_op, finally = op_array->try_catch_array[i].finally_op;
 757                 if (op_num <= catch || op_num <= finally) {
 758                         if (finally) {
 759                                 return 1;
 760                         }
 761 
 762                         do {
 763                                 zend_class_entry *ce;
 764                                 cur = &op_array->opcodes[catch];
 765 
 766                                 if (!(ce = CACHED_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(cur->op1))))) {
 767                                         ce = zend_fetch_class_by_name(Z_STR_P(EX_CONSTANT(cur->op1)), EX_CONSTANT(cur->op1) + 1, ZEND_FETCH_CLASS_NO_AUTOLOAD);
 768                                         CACHE_PTR(Z_CACHE_SLOT_P(EX_CONSTANT(cur->op1)), ce);
 769                                 }
 770 
 771                                 if (ce == exception->ce || (ce && instanceof_function(exception->ce, ce))) {
 772                                         return 1;
 773                                 }
 774 
 775                                 catch = cur->extended_value;
 776                         } while (!cur->result.num);
 777 
 778                         return 0;
 779                 }
 780         }
 781 
 782         return op->opcode == ZEND_CATCH;
 783 }
 784 
 785 char *phpdbg_short_zval_print(zval *zv, int maxlen) /* {{{ */
 786 {
 787         char *decode = NULL;
 788 
 789         switch (Z_TYPE_P(zv)) {
 790                 case IS_UNDEF:
 791                         decode = estrdup("");
 792                         break;
 793                 case IS_NULL:
 794                         decode = estrdup("null");
 795                         break;
 796                 case IS_FALSE:
 797                         decode = estrdup("false");
 798                         break;
 799                 case IS_TRUE:
 800                         decode = estrdup("true");
 801                         break;
 802                 case IS_LONG:
 803                         spprintf(&decode, 0, ZEND_LONG_FMT, Z_LVAL_P(zv));
 804                         break;
 805                 case IS_DOUBLE:
 806                         spprintf(&decode, 0, "%.*G", 14, Z_DVAL_P(zv));
 807                         break;
 808                 case IS_STRING: {
 809                         int i;
 810                         zend_string *str = php_addcslashes(Z_STR_P(zv), 0, "\\\"", 2);
 811                         for (i = 0; i < ZSTR_LEN(str); i++) {
 812                                 if (ZSTR_VAL(str)[i] < 32) {
 813                                         ZSTR_VAL(str)[i] = ' ';
 814                                 }
 815                         }
 816                         spprintf(&decode, 0, "\"%.*s\"%c",
 817                                 ZSTR_LEN(str) <= maxlen - 2 ? (int) ZSTR_LEN(str) : (maxlen - 3),
 818                                 ZSTR_VAL(str), ZSTR_LEN(str) <= maxlen - 2 ? 0 : '+');
 819                         zend_string_release(str);
 820                         } break;
 821                 case IS_RESOURCE:
 822                         spprintf(&decode, 0, "Rsrc #%d", Z_RES_HANDLE_P(zv));
 823                         break;
 824                 case IS_ARRAY:
 825                         spprintf(&decode, 0, "array(%d)", zend_hash_num_elements(Z_ARR_P(zv)));
 826                         break;
 827                 case IS_OBJECT: {
 828                         zend_string *str = Z_OBJCE_P(zv)->name;
 829                         spprintf(&decode, 0, "%.*s%c",
 830                                 ZSTR_LEN(str) <= maxlen ? (int) ZSTR_LEN(str) : maxlen - 1,
 831                                 ZSTR_VAL(str), ZSTR_LEN(str) <= maxlen ? 0 : '+');
 832                         break;
 833                 }
 834                 case IS_CONSTANT:
 835                         decode = estrdup("<constant>");
 836                         break;
 837                 case IS_CONSTANT_AST:
 838                         decode = estrdup("<ast>");
 839                         break;
 840                 default:
 841                         spprintf(&decode, 0, "unknown type: %d", Z_TYPE_P(zv));
 842                         break;
 843         }
 844 
 845         return decode;
 846 } /* }}} */

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