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Copy pathphpdbg_utils.c
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666 lines (562 loc) · 17.6 KB
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2015 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Felipe Pena <felipe@php.net> |
| Authors: Joe Watkins <joe.watkins@live.co.uk> |
| Authors: Bob Weinand <bwoebi@php.net> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "php.h"
#include "phpdbg.h"
#include "phpdbg_opcode.h"
#include "phpdbg_utils.h"
#if defined(HAVE_SYS_IOCTL_H)
# include "sys/ioctl.h"
# ifndef GWINSZ_IN_SYS_IOCTL
# include <termios.h>
# endif
#endif
ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
/* {{{ color structures */
const static phpdbg_color_t colors[] = {
PHPDBG_COLOR_D("none", "0;0"),
PHPDBG_COLOR_D("white", "0;64"),
PHPDBG_COLOR_D("white-bold", "1;64"),
PHPDBG_COLOR_D("white-underline", "4;64"),
PHPDBG_COLOR_D("red", "0;31"),
PHPDBG_COLOR_D("red-bold", "1;31"),
PHPDBG_COLOR_D("red-underline", "4;31"),
PHPDBG_COLOR_D("green", "0;32"),
PHPDBG_COLOR_D("green-bold", "1;32"),
PHPDBG_COLOR_D("green-underline", "4;32"),
PHPDBG_COLOR_D("yellow", "0;33"),
PHPDBG_COLOR_D("yellow-bold", "1;33"),
PHPDBG_COLOR_D("yellow-underline", "4;33"),
PHPDBG_COLOR_D("blue", "0;34"),
PHPDBG_COLOR_D("blue-bold", "1;34"),
PHPDBG_COLOR_D("blue-underline", "4;34"),
PHPDBG_COLOR_D("purple", "0;35"),
PHPDBG_COLOR_D("purple-bold", "1;35"),
PHPDBG_COLOR_D("purple-underline", "4;35"),
PHPDBG_COLOR_D("cyan", "0;36"),
PHPDBG_COLOR_D("cyan-bold", "1;36"),
PHPDBG_COLOR_D("cyan-underline", "4;36"),
PHPDBG_COLOR_D("black", "0;30"),
PHPDBG_COLOR_D("black-bold", "1;30"),
PHPDBG_COLOR_D("black-underline", "4;30"),
PHPDBG_COLOR_END
}; /* }}} */
/* {{{ */
const static phpdbg_element_t elements[] = {
PHPDBG_ELEMENT_D("prompt", PHPDBG_COLOR_PROMPT),
PHPDBG_ELEMENT_D("error", PHPDBG_COLOR_ERROR),
PHPDBG_ELEMENT_D("notice", PHPDBG_COLOR_NOTICE),
PHPDBG_ELEMENT_END
}; /* }}} */
PHPDBG_API int phpdbg_is_numeric(const char *str) /* {{{ */
{
if (!str)
return 0;
for (; *str; str++) {
if (isspace(*str) || *str == '-') {
continue;
}
return isdigit(*str);
}
return 0;
} /* }}} */
PHPDBG_API int phpdbg_is_empty(const char *str) /* {{{ */
{
if (!str)
return 1;
for (; *str; str++) {
if (isspace(*str)) {
continue;
}
return 0;
}
return 1;
} /* }}} */
PHPDBG_API int phpdbg_is_addr(const char *str) /* {{{ */
{
return str[0] && str[1] && memcmp(str, "0x", 2) == 0;
} /* }}} */
PHPDBG_API int phpdbg_is_class_method(const char *str, size_t len, char **class, char **method) /* {{{ */
{
char *sep = NULL;
if (strstr(str, "#") != NULL)
return 0;
if (strstr(str, " ") != NULL)
return 0;
sep = strstr(str, "::");
if (!sep || sep == str || sep+2 == str+len-1) {
return 0;
}
if (class != NULL) {
if (str[0] == '\\') {
str++;
len--;
}
*class = estrndup(str, sep - str);
(*class)[sep - str] = 0;
}
if (method != NULL) {
*method = estrndup(sep+2, str + len - (sep + 2));
}
return 1;
} /* }}} */
PHPDBG_API char *phpdbg_resolve_path(const char *path) /* {{{ */
{
char resolved_name[MAXPATHLEN];
if (expand_filepath(path, resolved_name) == NULL) {
return NULL;
}
return estrdup(resolved_name);
} /* }}} */
PHPDBG_API const char *phpdbg_current_file(void) /* {{{ */
{
const char *file = zend_get_executed_filename();
if (memcmp(file, "[no active file]", sizeof("[no active file]")) == 0) {
return PHPDBG_G(exec);
}
return file;
} /* }}} */
PHPDBG_API const zend_function *phpdbg_get_function(const char *fname, const char *cname) /* {{{ */
{
zend_function *func = NULL;
zend_string *lfname = zend_string_alloc(strlen(fname), 0);
memcpy(lfname->val, zend_str_tolower_dup(fname, lfname->len), lfname->len + 1);
if (cname) {
zend_class_entry *ce;
zend_string *lcname = zend_string_alloc(strlen(cname), 0);
memcpy(lcname->val, zend_str_tolower_dup(cname, lcname->len), lcname->len + 1);
ce = zend_lookup_class(lcname);
efree(lcname);
if (ce) {
func = zend_hash_find_ptr(&ce->function_table, lfname);
}
} else {
func = zend_hash_find_ptr(EG(function_table), lfname);
}
efree(lfname);
return func;
} /* }}} */
PHPDBG_API char *phpdbg_trim(const char *str, size_t len, size_t *new_len) /* {{{ */
{
const char *p = str;
char *new = NULL;
while (p && isspace(*p)) {
++p;
--len;
}
while (*p && isspace(*(p + len -1))) {
--len;
}
if (len == 0) {
new = estrndup("", sizeof(""));
*new_len = 0;
} else {
new = estrndup(p, len);
*(new + len) = '\0';
if (new_len) {
*new_len = len;
}
}
return new;
} /* }}} */
PHPDBG_API const phpdbg_color_t *phpdbg_get_color(const char *name, size_t name_length) /* {{{ */
{
const phpdbg_color_t *color = colors;
while (color && color->name) {
if (name_length == color->name_length &&
memcmp(name, color->name, name_length) == SUCCESS) {
phpdbg_debug("phpdbg_get_color(%s, %lu): %s", name, name_length, color->code);
return color;
}
++color;
}
phpdbg_debug("phpdbg_get_color(%s, %lu): failed", name, name_length);
return NULL;
} /* }}} */
PHPDBG_API void phpdbg_set_color(int element, const phpdbg_color_t *color) /* {{{ */
{
PHPDBG_G(colors)[element] = color;
} /* }}} */
PHPDBG_API void phpdbg_set_color_ex(int element, const char *name, size_t name_length) /* {{{ */
{
const phpdbg_color_t *color = phpdbg_get_color(name, name_length);
if (color) {
phpdbg_set_color(element, color);
} else PHPDBG_G(colors)[element] = colors;
} /* }}} */
PHPDBG_API const phpdbg_color_t* phpdbg_get_colors(void) /* {{{ */
{
return colors;
} /* }}} */
PHPDBG_API int phpdbg_get_element(const char *name, size_t len) {
const phpdbg_element_t *element = elements;
while (element && element->name) {
if (len == element->name_length) {
if (strncasecmp(name, element->name, len) == SUCCESS) {
return element->id;
}
}
element++;
}
return PHPDBG_COLOR_INVALID;
}
PHPDBG_API void phpdbg_set_prompt(const char *prompt) /* {{{ */
{
/* free formatted prompt */
if (PHPDBG_G(prompt)[1]) {
free(PHPDBG_G(prompt)[1]);
PHPDBG_G(prompt)[1] = NULL;
}
/* free old prompt */
if (PHPDBG_G(prompt)[0]) {
free(PHPDBG_G(prompt)[0]);
PHPDBG_G(prompt)[0] = NULL;
}
/* copy new prompt */
PHPDBG_G(prompt)[0] = strdup(prompt);
} /* }}} */
PHPDBG_API const char *phpdbg_get_prompt(void) /* {{{ */
{
/* find cached prompt */
if (PHPDBG_G(prompt)[1]) {
return PHPDBG_G(prompt)[1];
}
/* create cached prompt */
#ifndef HAVE_LIBEDIT
/* TODO: libedit doesn't seems to support coloured prompt */
if ((PHPDBG_G(flags) & PHPDBG_IS_COLOURED)) {
asprintf(
&PHPDBG_G(prompt)[1], "\033[%sm%s\033[0m ",
PHPDBG_G(colors)[PHPDBG_COLOR_PROMPT]->code,
PHPDBG_G(prompt)[0]);
} else
#endif
{
asprintf(
&PHPDBG_G(prompt)[1], "%s ",
PHPDBG_G(prompt)[0]);
}
return PHPDBG_G(prompt)[1];
} /* }}} */
int phpdbg_rebuild_symtable(void) {
if (!EG(current_execute_data) || !EG(current_execute_data)->func) {
phpdbg_error("inactive", "type=\"op_array\"", "No active op array!");
return FAILURE;
}
if (!zend_rebuild_symbol_table()) {
phpdbg_error("inactive", "type=\"symbol_table\"", "No active symbol table!");
return FAILURE;
}
return SUCCESS;
}
PHPDBG_API int phpdbg_get_terminal_width(void) /* {{{ */
{
int columns;
#ifdef _WIN32
CONSOLE_SCREEN_BUFFER_INFO csbi;
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
columns = csbi.srWindow.Right - csbi.srWindow.Left + 1;
#elif defined(HAVE_SYS_IOCTL_H) && defined(TIOCGWINSZ)
struct winsize w;
columns = ioctl(fileno(stdout), TIOCGWINSZ, &w) == 0 ? w.ws_col : 80;
#else
columns = 80;
#endif
return columns;
} /* }}} */
PHPDBG_API void phpdbg_set_async_io(int fd) {
#ifndef _WIN32
int flags;
fcntl(STDIN_FILENO, F_SETOWN, getpid());
flags = fcntl(STDIN_FILENO, F_GETFL);
fcntl(STDIN_FILENO, F_SETFL, flags | FASYNC);
#endif
}
int phpdbg_safe_class_lookup(const char *name, int name_length, zend_class_entry **ce) {
if (PHPDBG_G(flags) & PHPDBG_IN_SIGNAL_HANDLER) {
char *lc_name, *lc_free;
int lc_length;
if (name == NULL || !name_length) {
return FAILURE;
}
lc_free = lc_name = emalloc(name_length + 1);
zend_str_tolower_copy(lc_name, name, name_length);
lc_length = name_length + 1;
if (lc_name[0] == '\\') {
lc_name += 1;
lc_length -= 1;
}
phpdbg_try_access {
*ce = zend_hash_str_find_ptr(EG(class_table), lc_name, lc_length);
} phpdbg_catch_access {
phpdbg_error("signalsegv", "class=\"%.*s\"", "Could not fetch class %.*s, invalid data source", name_length, name);
} phpdbg_end_try_access();
efree(lc_free);
} else {
zend_string *str_name = zend_string_init(name, name_length, 0);
*ce = zend_lookup_class(str_name);
efree(str_name);
}
return ce ? SUCCESS : FAILURE;
}
char *phpdbg_get_property_key(char *key) {
if (*key != 0) {
return key;
}
return strchr(key + 1, 0) + 1;
}
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) {
return callback(name, len, keyname, keylen, parent, zv);
}
PHPDBG_API int phpdbg_parse_variable(char *input, size_t len, HashTable *parent, size_t i, phpdbg_parse_var_func callback, zend_bool silent) {
return phpdbg_parse_variable_with_arg(input, len, parent, i, (phpdbg_parse_var_with_arg_func) phpdbg_parse_variable_arg_wrapper, silent, callback);
}
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, zend_bool silent, void *arg) {
int ret = FAILURE;
zend_bool new_index = 1;
char *last_index;
size_t index_len = 0;
zval *zv;
if (len < 2 || *input != '$') {
goto error;
}
while (i++ < len) {
if (i == len) {
new_index = 1;
} else {
switch (input[i]) {
case '[':
new_index = 1;
break;
case ']':
break;
case '>':
if (last_index[index_len - 1] == '-') {
new_index = 1;
index_len--;
}
break;
default:
if (new_index) {
last_index = input + i;
new_index = 0;
}
if (input[i - 1] == ']') {
goto error;
}
index_len++;
}
}
if (new_index && index_len == 0) {
zend_ulong numkey;
zend_string *strkey;
ZEND_HASH_FOREACH_KEY_PTR(parent, numkey, strkey, zv) {
while (Z_TYPE_P(zv) == IS_INDIRECT) {
zv = Z_INDIRECT_P(zv);
}
if (i == len || (i == len - 1 && input[len - 1] == ']')) {
char *key, *propkey;
size_t namelen, keylen;
char *name;
char *keyname = estrndup(last_index, index_len);
if (strkey) {
key = strkey->val;
keylen = strkey->len;
} else {
keylen = spprintf(&key, 0, "%llu", numkey);
}
propkey = phpdbg_get_property_key(key);
name = emalloc(i + keylen + 2);
namelen = sprintf(name, "%.*s%.*s%s", (int) i, input, keylen - (propkey - key), propkey, input[len - 1] == ']'?"]":"");
if (!strkey) {
efree(key);
}
ret = callback(name, namelen, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
} else if (Z_TYPE_P(zv) == IS_OBJECT) {
phpdbg_parse_variable_with_arg(input, len, Z_OBJPROP_P(zv), i, callback, silent, arg);
} else if (Z_TYPE_P(zv) == IS_ARRAY) {
phpdbg_parse_variable_with_arg(input, len, Z_ARRVAL_P(zv), i, callback, silent, arg);
} else {
/* Ignore silently */
}
} ZEND_HASH_FOREACH_END();
return ret;
} else if (new_index) {
char last_chr = last_index[index_len];
last_index[index_len] = 0;
if (!(zv = zend_symtable_str_find(parent, last_index, index_len))) {
if (!silent) {
phpdbg_error("variable", "type=\"undefined\" variable=\"%.*s\"", "%.*s is undefined", (int) i, input);
}
return FAILURE;
}
while (Z_TYPE_P(zv) == IS_INDIRECT) {
zv = Z_INDIRECT_P(zv);
}
last_index[index_len] = last_chr;
if (i == len) {
char *name = estrndup(input, len);
char *keyname = estrndup(last_index, index_len);
ret = callback(name, len, keyname, index_len, parent, zv, arg) == SUCCESS || ret == SUCCESS?SUCCESS:FAILURE;
} else if (Z_TYPE_P(zv) == IS_OBJECT) {
parent = Z_OBJPROP_P(zv);
} else if (Z_TYPE_P(zv) == IS_ARRAY) {
parent = Z_ARRVAL_P(zv);
} else {
phpdbg_error("variable", "type=\"notiterable\" variable=\"%.*s\"", "%.*s is nor an array nor an object", (int) i, input);
return FAILURE;
}
index_len = 0;
}
}
return ret;
error:
phpdbg_error("variable", "type=\"invalidinput\"", "Malformed input");
return FAILURE;
}
int phpdbg_is_auto_global(char *name, int len) {
return zend_is_auto_global_str(name, len);
}
static int phpdbg_xml_array_element_dump(zval *zv, zend_string *key, zend_ulong num) {
phpdbg_xml("<element");
phpdbg_try_access {
if (key) { /* string key */
phpdbg_xml(" name=\"%.*s\"", key->len, key->val);
} else { /* numeric key */
phpdbg_xml(" name=\"%ld\"", num);
}
} phpdbg_catch_access {
phpdbg_xml(" severity=\"error\" ></element>");
return 0;
} phpdbg_end_try_access();
phpdbg_xml(">");
phpdbg_xml_var_dump(zv);
phpdbg_xml("</element>");
return 0;
}
static int phpdbg_xml_object_property_dump(zval *zv, zend_string *key, zend_ulong num) {
phpdbg_xml("<property");
phpdbg_try_access {
if (key) { /* string key */
const char *prop_name, *class_name;
int unmangle = zend_unmangle_property_name(key, &class_name, &prop_name);
if (class_name && unmangle == SUCCESS) {
phpdbg_xml(" name=\"%s\"", prop_name);
if (class_name[0] == '*') {
phpdbg_xml(" protection=\"protected\"");
} else {
phpdbg_xml(" class=\"%s\" protection=\"private\"", class_name);
}
} else {
phpdbg_xml(" name=\"%.*s\" protection=\"public\"", key->len, key->val);
}
} else { /* numeric key */
phpdbg_xml(" name=\"%ld\" protection=\"public\"", num);
}
} phpdbg_catch_access {
phpdbg_xml(" severity=\"error\" ></property>");
return 0;
} phpdbg_end_try_access();
phpdbg_xml(">");
phpdbg_xml_var_dump(zv);
phpdbg_xml("</property>");
return 0;
}
#define COMMON (is_ref ? "&" : "")
PHPDBG_API void phpdbg_xml_var_dump(zval *zv) {
HashTable *myht;
zend_string *class_name, *key;
zend_ulong num;
zval *val;
int (*element_dump_func)(zval *zv, zend_string *key, zend_ulong num);
zend_bool is_ref = 0;
int is_temp;
phpdbg_try_access {
is_ref = Z_ISREF_P(zv) && GC_REFCOUNT(Z_COUNTED_P(zv)) > 1;
ZVAL_DEREF(zv);
switch (Z_TYPE_P(zv)) {
case IS_TRUE:
phpdbg_xml("<bool refstatus=\"%s\" value=\"true\" />", COMMON);
break;
case IS_FALSE:
phpdbg_xml("<bool refstatus=\"%s\" value=\"false\" />", COMMON);
break;
case IS_NULL:
phpdbg_xml("<null refstatus=\"%s\" />", COMMON);
break;
case IS_LONG:
phpdbg_xml("<int refstatus=\"%s\" value=\"" ZEND_LONG_FMT "\" />", COMMON, Z_LVAL_P(zv));
break;
case IS_DOUBLE:
phpdbg_xml("<float refstatus=\"%s\" value=\"%.*G\" />", COMMON, (int) EG(precision), Z_DVAL_P(zv));
break;
case IS_STRING:
phpdbg_xml("<string refstatus=\"%s\" length=\"%d\" value=\"%.*s\" />", COMMON, Z_STRLEN_P(zv), Z_STRLEN_P(zv), Z_STRVAL_P(zv));
break;
case IS_ARRAY:
myht = Z_ARRVAL_P(zv);
if (ZEND_HASH_APPLY_PROTECTION(myht) && ++myht->u.v.nApplyCount > 1) {
phpdbg_xml("<recursion />");
--myht->u.v.nApplyCount;
break;
}
phpdbg_xml("<array refstatus=\"%s\" num=\"%d\">", COMMON, zend_hash_num_elements(myht));
element_dump_func = phpdbg_xml_array_element_dump;
is_temp = 0;
goto head_done;
case IS_OBJECT:
myht = Z_OBJDEBUG_P(zv, is_temp);
if (myht && ++myht->u.v.nApplyCount > 1) {
phpdbg_xml("<recursion />");
--myht->u.v.nApplyCount;
break;
}
class_name = Z_OBJ_HANDLER_P(zv, get_class_name)(Z_OBJ_P(zv));
phpdbg_xml("<object refstatus=\"%s\" class=\"%.*s\" id=\"%d\" num=\"%d\">", COMMON, class_name->len, class_name->val, Z_OBJ_HANDLE_P(zv), myht ? zend_hash_num_elements(myht) : 0);
zend_string_release(class_name);
element_dump_func = phpdbg_xml_object_property_dump;
head_done:
if (myht) {
ZEND_HASH_FOREACH_KEY_VAL_IND(myht, num, key, val) {
element_dump_func(val, key, num);
} ZEND_HASH_FOREACH_END();
zend_hash_apply_with_arguments(myht, (apply_func_args_t) element_dump_func, 0);
--myht->u.v.nApplyCount;
if (is_temp) {
zend_hash_destroy(myht);
efree(myht);
}
}
if (Z_TYPE_P(zv) == IS_ARRAY) {
phpdbg_xml("</array>");
} else {
phpdbg_xml("</object>");
}
break;
case IS_RESOURCE: {
const char *type_name = zend_rsrc_list_get_rsrc_type(Z_RES_P(zv));
phpdbg_xml("<resource refstatus=\"%s\" id=\"%pd\" type=\"%ld\" />", COMMON, Z_RES_P(zv)->handle, type_name ? type_name : "unknown");
break;
}
default:
break;
}
} phpdbg_end_try_access();
}
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