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phpdbg.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://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 "phpdbg.h"
#include "phpdbg_prompt.h"
#include "phpdbg_bp.h"
#include "phpdbg_break.h"
#include "phpdbg_list.h"
#include "phpdbg_utils.h"
#include "phpdbg_set.h"
#include "phpdbg_io.h"
#include "zend_alloc.h"
#include "phpdbg_print.h"
#include "phpdbg_help.h"
#include "phpdbg_arginfo.h"
#include "zend_vm.h"
#include "php_ini_builder.h"
#include "php_main.h"
#include "ext/standard/basic_functions.h"
#if defined(PHP_WIN32) && defined(HAVE_OPENSSL_EXT)
# include "openssl/applink.c"
#endif
#if defined(PHP_WIN32) && defined(ZTS)
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_DECLARE_MODULE_GLOBALS(phpdbg)
int phpdbg_startup_run = 0;
static bool phpdbg_booted = 0;
static bool phpdbg_fully_started = 0;
static bool use_mm_wrappers = 1;
static void php_phpdbg_destroy_bp_file(zval *brake) /* {{{ */
{
zend_hash_destroy(Z_ARRVAL_P(brake));
efree(Z_ARRVAL_P(brake));
} /* }}} */
static void php_phpdbg_destroy_bp_symbol(zval *brake) /* {{{ */
{
efree((char *) ((phpdbg_breaksymbol_t *) Z_PTR_P(brake))->symbol);
efree(Z_PTR_P(brake));
} /* }}} */
static void php_phpdbg_destroy_bp_opcode(zval *brake) /* {{{ */
{
efree((char *) ((phpdbg_breakop_t *) Z_PTR_P(brake))->name);
efree(Z_PTR_P(brake));
} /* }}} */
static void php_phpdbg_destroy_bp_opline(zval *brake) /* {{{ */
{
efree(Z_PTR_P(brake));
} /* }}} */
static void php_phpdbg_destroy_bp_methods(zval *brake) /* {{{ */
{
zend_hash_destroy(Z_ARRVAL_P(brake));
efree(Z_ARRVAL_P(brake));
} /* }}} */
static void php_phpdbg_destroy_bp_condition(zval *data) /* {{{ */
{
phpdbg_breakcond_t *brake = (phpdbg_breakcond_t *) Z_PTR_P(data);
if (brake->ops) {
destroy_op_array(brake->ops);
efree(brake->ops);
}
efree((char*) brake->code);
efree(brake);
} /* }}} */
static void php_phpdbg_destroy_registered(zval *data) /* {{{ */
{
zend_function_dtor(data);
} /* }}} */
static void php_phpdbg_destroy_file_source(zval *data) /* {{{ */
{
phpdbg_file_source *source = (phpdbg_file_source *) Z_PTR_P(data);
destroy_op_array(&source->op_array);
if (source->buf) {
efree(source->buf);
}
efree(source);
} /* }}} */
static inline void php_phpdbg_globals_ctor(zend_phpdbg_globals *pg) /* {{{ */
{
pg->prompt[0] = NULL;
pg->prompt[1] = NULL;
pg->colors[0] = NULL;
pg->colors[1] = NULL;
pg->colors[2] = NULL;
pg->lines = phpdbg_get_terminal_height();
pg->exec = NULL;
pg->exec_len = 0;
pg->buffer = NULL;
pg->last_was_newline = 1;
pg->ops = NULL;
pg->vmret = 0;
pg->in_execution = 0;
pg->bp_count = 0;
pg->flags = PHPDBG_DEFAULT_FLAGS;
memset(pg->io, 0, sizeof(pg->io));
pg->frame.num = 0;
pg->sapi_name_ptr = NULL;
pg->unclean_eval = 0;
pg->req_id = 0;
pg->err_buf.active = 0;
pg->err_buf.type = 0;
pg->input_buflen = 0;
pg->sigsafe_mem.mem = NULL;
pg->sigsegv_bailout = NULL;
pg->oplog_list = NULL;
pg->stdin_file = NULL;
pg->cur_command = NULL;
pg->last_line = 0;
#ifdef HAVE_USERFAULTFD_WRITEFAULT
pg->watch_userfaultfd = 0;
pg->watch_userfault_thread = 0;
#endif
} /* }}} */
static PHP_MINIT_FUNCTION(phpdbg) /* {{{ */
{
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE], 8, NULL, php_phpdbg_destroy_bp_file, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING], 8, NULL, php_phpdbg_destroy_bp_file, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM], 8, NULL, php_phpdbg_destroy_bp_symbol, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE], 8, NULL, php_phpdbg_destroy_bp_methods, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE], 8, NULL, php_phpdbg_destroy_bp_methods, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE], 8, NULL, php_phpdbg_destroy_bp_methods, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], 8, NULL, php_phpdbg_destroy_bp_opline, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_OPCODE], 8, NULL, php_phpdbg_destroy_bp_opcode, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD], 8, NULL, php_phpdbg_destroy_bp_methods, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_COND], 8, NULL, php_phpdbg_destroy_bp_condition, 0);
zend_hash_init(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP], 8, NULL, NULL, 0);
zend_hash_init(&PHPDBG_G(seek), 8, NULL, NULL, 0);
zend_hash_init(&PHPDBG_G(registered), 8, NULL, php_phpdbg_destroy_registered, 0);
zend_hash_init(&PHPDBG_G(file_sources), 0, NULL, php_phpdbg_destroy_file_source, 0);
phpdbg_setup_watchpoints();
zend_execute_ex = phpdbg_execute_ex;
register_phpdbg_symbols(module_number);
return SUCCESS;
} /* }}} */
static PHP_MSHUTDOWN_FUNCTION(phpdbg) /* {{{ */
{
zend_hash_destroy(&PHPDBG_G(registered));
phpdbg_destroy_watchpoints();
if (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
phpdbg_notice("Script ended normally");
}
/* hack to restore mm_heap->use_custom_heap in order to receive memory leak info */
if (use_mm_wrappers) {
/* ASSUMING that mm_heap->use_custom_heap is the first element of the struct ... */
*(int *) zend_mm_get_heap() = 0;
}
if (PHPDBG_G(buffer)) {
free(PHPDBG_G(buffer));
PHPDBG_G(buffer) = NULL;
}
if (PHPDBG_G(exec)) {
free(PHPDBG_G(exec));
PHPDBG_G(exec) = NULL;
}
if (PHPDBG_G(oplog_list)) {
phpdbg_oplog_list *cur = PHPDBG_G(oplog_list);
do {
phpdbg_oplog_list *prev = cur->prev;
efree(cur);
cur = prev;
} while (cur != NULL);
zend_arena_destroy(PHPDBG_G(oplog_arena));
PHPDBG_G(oplog_list) = NULL;
}
fflush(stdout);
if (SG(request_info).argv0) {
free(SG(request_info).argv0);
SG(request_info).argv0 = NULL;
}
return SUCCESS;
}
/* }}} */
static PHP_RINIT_FUNCTION(phpdbg) /* {{{ */
{
/* deactivate symbol table caching to have these properly destroyed upon stack leaving (especially important for watchpoints) */
EG(symtable_cache_limit) = EG(symtable_cache);
if (zend_vm_kind() != ZEND_VM_KIND_HYBRID) {
/* phpdbg cannot work JIT-ed code */
zend_string *key = zend_string_init(ZEND_STRL("opcache.jit"), false);
zend_string *value = zend_string_init(ZEND_STRL("off"), false);
zend_alter_ini_entry_ex(key, value, ZEND_INI_SYSTEM, ZEND_INI_STAGE_STARTUP, false);
zend_string_release_ex(key, false);
zend_string_release_ex(value, false);
}
return SUCCESS;
} /* }}} */
static PHP_RSHUTDOWN_FUNCTION(phpdbg) /* {{{ */
{
if (PHPDBG_G(stdin_file)) {
fclose(PHPDBG_G(stdin_file));
PHPDBG_G(stdin_file) = NULL;
}
return SUCCESS;
} /* }}} */
/* {{{ Attempt to set the execution context for phpdbg
If the execution context was set previously it is returned
If the execution context was not set previously boolean true is returned
If the request to set the context fails, boolean false is returned, and an E_WARNING raised */
PHP_FUNCTION(phpdbg_exec)
{
zend_string *exec;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &exec) == FAILURE) {
RETURN_THROWS();
}
{
zend_stat_t sb = {0};
bool result = 1;
if (VCWD_STAT(ZSTR_VAL(exec), &sb) != FAILURE) {
if (sb.st_mode & (S_IFREG|S_IFLNK)) {
if (PHPDBG_G(exec)) {
ZVAL_STRINGL(return_value, PHPDBG_G(exec), PHPDBG_G(exec_len));
free(PHPDBG_G(exec));
result = 0;
}
PHPDBG_G(exec) = zend_strndup(ZSTR_VAL(exec), ZSTR_LEN(exec));
PHPDBG_G(exec_len) = ZSTR_LEN(exec);
if (result) {
ZVAL_TRUE(return_value);
}
} else {
zend_error(E_WARNING, "Failed to set execution context (%s), not a regular file or symlink", ZSTR_VAL(exec));
ZVAL_FALSE(return_value);
}
} else {
zend_error(E_WARNING, "Failed to set execution context (%s) the file does not exist", ZSTR_VAL(exec));
ZVAL_FALSE(return_value);
}
}
} /* }}} */
/* {{{ instructs phpdbg to insert a breakpoint at the next opcode */
PHP_FUNCTION(phpdbg_break_next)
{
zend_execute_data *ex;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
ex = EG(current_execute_data);
while (ex && ex->func && !ZEND_USER_CODE(ex->func->type)) {
ex = ex->prev_execute_data;
}
if (!ex) {
return;
}
phpdbg_set_breakpoint_opline_ex((phpdbg_opline_ptr_t) ex->opline + 1);
} /* }}} */
/* {{{ */
PHP_FUNCTION(phpdbg_break_file)
{
char *file;
size_t flen;
zend_long line;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sl", &file, &flen, &line) == FAILURE) {
RETURN_THROWS();
}
phpdbg_set_breakpoint_file(file, 0, line);
} /* }}} */
/* {{{ */
PHP_FUNCTION(phpdbg_break_method)
{
char *class, *method;
size_t clen, mlen;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss", &class, &clen, &method, &mlen) == FAILURE) {
RETURN_THROWS();
}
phpdbg_set_breakpoint_method(class, method);
} /* }}} */
/* {{{ */
PHP_FUNCTION(phpdbg_break_function)
{
char *function;
size_t function_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &function, &function_len) == FAILURE) {
RETURN_THROWS();
}
phpdbg_set_breakpoint_symbol(function, function_len);
} /* }}} */
/* {{{ instructs phpdbg to clear breakpoints */
PHP_FUNCTION(phpdbg_clear)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP]);
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_COND]);
} /* }}} */
/* {{{ */
PHP_FUNCTION(phpdbg_color)
{
zend_long element;
char *color;
size_t color_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ls", &element, &color, &color_len) == FAILURE) {
RETURN_THROWS();
}
switch (element) {
case PHPDBG_COLOR_NOTICE:
case PHPDBG_COLOR_ERROR:
case PHPDBG_COLOR_PROMPT:
phpdbg_set_color_ex(element, color, color_len);
break;
default:
zend_argument_value_error(1, "must be one of PHPDBG_COLOR_PROMPT, PHPDBG_COLOR_NOTICE, or PHPDBG_COLOR_ERROR");
}
} /* }}} */
/* {{{ */
PHP_FUNCTION(phpdbg_prompt)
{
char *prompt = NULL;
size_t prompt_len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &prompt, &prompt_len) == FAILURE) {
RETURN_THROWS();
}
phpdbg_set_prompt(prompt);
} /* }}} */
/* {{{ */
PHP_FUNCTION(phpdbg_start_oplog)
{
phpdbg_oplog_list *prev;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
prev = PHPDBG_G(oplog_list);
if (!prev) {
PHPDBG_G(oplog_arena) = zend_arena_create(64 * 1024);
}
PHPDBG_G(oplog_list) = emalloc(sizeof(phpdbg_oplog_list));
PHPDBG_G(oplog_list)->prev = prev;
PHPDBG_G(oplog_cur) = &PHPDBG_G(oplog_list)->start;
PHPDBG_G(oplog_cur)->next = NULL;
}
static zend_always_inline bool phpdbg_is_ignored_opcode(uint8_t opcode) {
return
opcode == ZEND_NOP || opcode == ZEND_OP_DATA || opcode == ZEND_FE_FREE || opcode == ZEND_FREE || opcode == ZEND_ASSERT_CHECK || opcode == ZEND_VERIFY_RETURN_TYPE
|| opcode == ZEND_DECLARE_CONST || opcode == ZEND_DECLARE_CLASS || opcode == ZEND_DECLARE_FUNCTION
|| opcode == ZEND_DECLARE_CLASS_DELAYED
|| opcode == ZEND_DECLARE_ANON_CLASS || opcode == ZEND_FAST_RET || opcode == ZEND_TICKS
|| opcode == ZEND_EXT_STMT || opcode == ZEND_EXT_FCALL_BEGIN || opcode == ZEND_EXT_FCALL_END
|| opcode == ZEND_BIND_GLOBAL || opcode == ZEND_BIND_INIT_STATIC_OR_JMP
;
}
static void phpdbg_oplog_fill_executable(zend_op_array *op_array, HashTable *insert_ht, bool by_opcode) {
/* ignore RECV_* opcodes */
zend_op *cur = op_array->opcodes + op_array->num_args + !!(op_array->fn_flags & ZEND_ACC_VARIADIC);
zend_op *end = op_array->opcodes + op_array->last;
zend_long insert_idx;
zval zero;
ZVAL_LONG(&zero, 0);
/* ignore autogenerated return (well, not too precise with finally branches, but that's okay) */
if (op_array->last >= 1 && (((end - 1)->opcode == ZEND_RETURN || (end - 1)->opcode == ZEND_RETURN_BY_REF || (end - 1)->opcode == ZEND_GENERATOR_RETURN)
&& ((op_array->last > 1 && ((end - 2)->opcode == ZEND_RETURN || (end - 2)->opcode == ZEND_RETURN_BY_REF || (end - 2)->opcode == ZEND_GENERATOR_RETURN || (end - 2)->opcode == ZEND_THROW))
|| op_array->function_name == NULL || (end - 1)->extended_value == -1))) {
end--;
}
for (; cur < end; cur++) {
uint8_t opcode = cur->opcode;
if (phpdbg_is_ignored_opcode(opcode)) {
continue;
}
if (by_opcode) {
insert_idx = cur - op_array->opcodes;
} else {
insert_idx = cur->lineno;
}
if (opcode == ZEND_NEW && cur[1].opcode == ZEND_DO_FCALL) {
cur++;
}
zend_hash_index_update(insert_ht, insert_idx, &zero);
}
}
static inline HashTable* phpdbg_add_empty_array(HashTable *ht, zend_string *name) {
zval *ht_zv = zend_hash_find(ht, name);
if (!ht_zv) {
zval zv;
array_init(&zv);
ht_zv = zend_hash_add_new(ht, name, &zv);
}
return Z_ARR_P(ht_zv);
}
/* {{{ */
PHP_FUNCTION(phpdbg_get_executable)
{
HashTable *options = NULL;
zval *option_buffer;
bool by_function = false;
bool by_opcode = false;
HashTable *insert_ht;
zend_function *func;
zend_class_entry *ce;
zend_string *name;
HashTable *files = &PHPDBG_G(file_sources);
HashTable files_tmp;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|H", &options) == FAILURE) {
RETURN_THROWS();
}
if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("functions")))) {
by_function = zend_is_true(option_buffer);
}
if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("opcodes")))) {
if (by_function) {
by_opcode = zend_is_true(option_buffer);
}
}
if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("files")))) {
ZVAL_DEREF(option_buffer);
if (Z_TYPE_P(option_buffer) == IS_ARRAY && zend_hash_num_elements(Z_ARR_P(option_buffer)) > 0) {
zval *filename;
files = &files_tmp;
zend_hash_init(files, 0, NULL, NULL, 0);
ZEND_HASH_FOREACH_VAL(Z_ARR_P(option_buffer), filename) {
zend_hash_add_empty_element(files, zval_get_string(filename));
} ZEND_HASH_FOREACH_END();
} else {
GC_ADDREF(files);
}
} else {
GC_ADDREF(files);
}
array_init(return_value);
ZEND_HASH_MAP_FOREACH_STR_KEY_PTR(EG(function_table), name, func) {
if (func->type == ZEND_USER_FUNCTION) {
if (zend_hash_exists(files, func->op_array.filename)) {
insert_ht = phpdbg_add_empty_array(Z_ARR_P(return_value), func->op_array.filename);
if (by_function) {
insert_ht = phpdbg_add_empty_array(insert_ht, name);
}
phpdbg_oplog_fill_executable(&func->op_array, insert_ht, by_opcode);
}
}
} ZEND_HASH_FOREACH_END();
ZEND_HASH_MAP_FOREACH_STR_KEY_PTR(EG(class_table), name, ce) {
if (ce->type == ZEND_USER_CLASS) {
if (zend_hash_exists(files, ce->info.user.filename)) {
ZEND_HASH_MAP_FOREACH_PTR(&ce->function_table, func) {
if (func->type == ZEND_USER_FUNCTION && zend_hash_exists(files, func->op_array.filename)) {
insert_ht = phpdbg_add_empty_array(Z_ARR_P(return_value), func->op_array.filename);
if (by_function) {
zend_string *fn_name = strpprintf(ZSTR_LEN(name) + ZSTR_LEN(func->op_array.function_name) + 2, "%.*s::%.*s", (int) ZSTR_LEN(name), ZSTR_VAL(name), (int) ZSTR_LEN(func->op_array.function_name), ZSTR_VAL(func->op_array.function_name));
insert_ht = phpdbg_add_empty_array(insert_ht, fn_name);
zend_string_release(fn_name);
}
phpdbg_oplog_fill_executable(&func->op_array, insert_ht, by_opcode);
}
} ZEND_HASH_FOREACH_END();
}
}
} ZEND_HASH_FOREACH_END();
ZEND_HASH_MAP_FOREACH_STR_KEY(files, name) {
phpdbg_file_source *source = zend_hash_find_ptr(&PHPDBG_G(file_sources), name);
if (source) {
phpdbg_oplog_fill_executable(
&source->op_array,
phpdbg_add_empty_array(Z_ARR_P(return_value), source->op_array.filename),
by_opcode);
}
} ZEND_HASH_FOREACH_END();
if (!GC_DELREF(files)) {
zend_hash_destroy(files);
}
}
/* {{{ */
PHP_FUNCTION(phpdbg_end_oplog)
{
phpdbg_oplog_entry *cur;
phpdbg_oplog_list *prev;
HashTable *options = NULL;
zval *option_buffer;
bool by_function = false;
bool by_opcode = false;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|H", &options) == FAILURE) {
RETURN_THROWS();
}
if (!PHPDBG_G(oplog_list)) {
zend_error(E_WARNING, "Cannot end an oplog without starting it");
return;
}
cur = PHPDBG_G(oplog_list)->start.next;
prev = PHPDBG_G(oplog_list)->prev;
efree(PHPDBG_G(oplog_list));
PHPDBG_G(oplog_list) = prev;
if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("functions")))) {
by_function = zend_is_true(option_buffer);
}
if (options && (option_buffer = zend_hash_str_find(options, ZEND_STRL("opcodes")))) {
if (by_function) {
by_opcode = zend_is_true(option_buffer);
}
}
array_init(return_value);
{
zend_string *last_file = NULL;
HashTable *file_ht = NULL;
zend_string *last_function = (void *)~(uintptr_t)0;
zend_class_entry *last_scope = NULL;
HashTable *insert_ht = NULL;
zend_long insert_idx;
do {
zval zero;
ZVAL_LONG(&zero, 0);
if (cur->filename != last_file) {
last_file = cur->filename;
file_ht = insert_ht = phpdbg_add_empty_array(Z_ARR_P(return_value), last_file);
}
if (by_function) {
if (cur->function_name == NULL) {
if (last_function != NULL) {
insert_ht = file_ht;
}
last_function = NULL;
} else if (cur->function_name != last_function || cur->scope != last_scope) {
zend_string *fn_name;
last_function = cur->function_name;
last_scope = cur->scope;
if (last_scope == NULL) {
fn_name = zend_string_copy(last_function);
} else {
fn_name = strpprintf(ZSTR_LEN(last_function) + ZSTR_LEN(last_scope->name) + 2, "%.*s::%.*s", (int) ZSTR_LEN(last_scope->name), ZSTR_VAL(last_scope->name), (int) ZSTR_LEN(last_function), ZSTR_VAL(last_function));
}
insert_ht = phpdbg_add_empty_array(Z_ARR_P(return_value), fn_name);
zend_string_release(fn_name);
}
}
if (by_opcode) {
insert_idx = cur->op - cur->opcodes;
} else {
if (phpdbg_is_ignored_opcode(cur->op->opcode)) {
continue;
}
insert_idx = cur->op->lineno;
}
ZEND_ASSERT(insert_ht && file_ht);
{
zval *num = zend_hash_index_find(insert_ht, insert_idx);
if (!num) {
num = zend_hash_index_add_new(insert_ht, insert_idx, &zero);
}
Z_LVAL_P(num)++;
}
} while ((cur = cur->next));
}
if (!prev) {
zend_arena_destroy(PHPDBG_G(oplog_arena));
}
}
static zend_module_entry sapi_phpdbg_module_entry = {
STANDARD_MODULE_HEADER,
PHPDBG_NAME,
ext_functions,
PHP_MINIT(phpdbg),
PHP_MSHUTDOWN(phpdbg),
PHP_RINIT(phpdbg),
PHP_RSHUTDOWN(phpdbg),
NULL,
PHPDBG_VERSION,
STANDARD_MODULE_PROPERTIES
};
static inline int php_sapi_phpdbg_module_startup(sapi_module_struct *module) /* {{{ */
{
if (php_module_startup(module, &sapi_phpdbg_module_entry) == FAILURE) {
return FAILURE;
}
phpdbg_booted = 1;
return SUCCESS;
} /* }}} */
static char* php_sapi_phpdbg_read_cookies(void) /* {{{ */
{
return NULL;
} /* }}} */
static int php_sapi_phpdbg_header_handler(sapi_header_struct *h, sapi_header_op_enum op, sapi_headers_struct *s) /* {{{ */
{
return 0;
}
/* }}} */
static int php_sapi_phpdbg_send_headers(sapi_headers_struct *sapi_headers) /* {{{ */
{
/* We do nothing here, this function is needed to prevent that the fallback
* header handling is called. */
return SAPI_HEADER_SENT_SUCCESSFULLY;
}
/* }}} */
static void php_sapi_phpdbg_send_header(sapi_header_struct *sapi_header, void *server_context) /* {{{ */
{
}
/* }}} */
static void php_sapi_phpdbg_log_message(const char *message, int syslog_type_int) /* {{{ */
{
/*
* We must not request TSRM before being booted
*/
if (phpdbg_booted) {
if (PHPDBG_G(flags) & PHPDBG_IN_EVAL) {
phpdbg_error("%s", message);
return;
}
phpdbg_error("%s", message);
if (PHPDBG_G(flags) & PHPDBG_PREVENT_INTERACTIVE) {
return;
}
if (PG(last_error_type) & E_FATAL_ERRORS) {
const char *file_char = zend_get_executed_filename();
zend_string *file = zend_string_init(file_char, strlen(file_char), 0);
phpdbg_list_file(file, 3, zend_get_executed_lineno() - 1, zend_get_executed_lineno());
zend_string_release(file);
if (!phpdbg_fully_started) {
return;
}
do {
switch (phpdbg_interactive(1, NULL)) {
case PHPDBG_LEAVE:
case PHPDBG_FINISH:
case PHPDBG_UNTIL:
case PHPDBG_NEXT:
return;
}
} while (!(PHPDBG_G(flags) & PHPDBG_IS_STOPPING));
}
} else {
fprintf(stdout, "%s\n", message);
}
}
/* }}} */
static int php_sapi_phpdbg_activate(void) /* {{{ */
{
return SUCCESS;
}
static int php_sapi_phpdbg_deactivate(void) /* {{{ */
{
/* Everything using ZMM should be freed here... */
zend_hash_destroy(&PHPDBG_G(file_sources));
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_OPCODE]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_COND]);
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP]);
zend_hash_destroy(&PHPDBG_G(seek));
if (PHPDBG_G(ops)) {
destroy_op_array(PHPDBG_G(ops));
efree(PHPDBG_G(ops));
PHPDBG_G(ops) = NULL;
}
return SUCCESS;
}
static void php_sapi_phpdbg_register_vars(zval *track_vars_array) /* {{{ */
{
size_t len;
char *docroot = "";
/* In phpdbg mode, we consider the environment to be a part of the server variables
*/
php_import_environment_variables(track_vars_array);
if (PHPDBG_G(exec)) {
len = PHPDBG_G(exec_len);
if (sapi_module.input_filter(PARSE_SERVER, "PHP_SELF", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len)) {
php_register_variable("PHP_SELF", PHPDBG_G(exec), track_vars_array);
}
if (sapi_module.input_filter(PARSE_SERVER, "SCRIPT_NAME", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len)) {
php_register_variable("SCRIPT_NAME", PHPDBG_G(exec), track_vars_array);
}
if (sapi_module.input_filter(PARSE_SERVER, "SCRIPT_FILENAME", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len)) {
php_register_variable("SCRIPT_FILENAME", PHPDBG_G(exec), track_vars_array);
}
if (sapi_module.input_filter(PARSE_SERVER, "PATH_TRANSLATED", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len)) {
php_register_variable("PATH_TRANSLATED", PHPDBG_G(exec), track_vars_array);
}
}
/* any old docroot will do */
len = 0;
if (sapi_module.input_filter(PARSE_SERVER, "DOCUMENT_ROOT", &docroot, len, &len)) {
php_register_variable("DOCUMENT_ROOT", docroot, track_vars_array);
}
}
/* }}} */
static inline size_t php_sapi_phpdbg_ub_write(const char *message, size_t length) /* {{{ */
{
return phpdbg_process_print(PHPDBG_G(io)[PHPDBG_STDOUT].fd, P_STDOUT, message, (int) length);
} /* }}} */
/* beginning of struct, see main/streams/plain_wrapper.c line 111 */
typedef struct {
FILE *file;
int fd;
} php_stdio_stream_data;
static ssize_t phpdbg_stdiop_write(php_stream *stream, const char *buf, size_t count) {
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
while (data->fd >= 0) {
struct stat stat[3];
memset(stat, 0, sizeof(stat));
int stat_stderr = fstat(fileno(stderr), &stat[2]);
int stat_stdout = fstat(fileno(stdout), &stat[0]);
int stat_datafd = fstat(data->fd, &stat[1]);
if ((stat_stderr < 0 && stat_stdout < 0) || stat_datafd < 0) {
break;
}
if (stat[0].st_dev == stat[1].st_dev && stat[0].st_ino == stat[1].st_ino) {
phpdbg_script(P_STDOUT, "%.*s", (int) count, buf);
return count;
}
if (stat[2].st_dev == stat[1].st_dev && stat[2].st_ino == stat[1].st_ino) {
phpdbg_script(P_STDERR, "%.*s", (int) count, buf);
return count;
}
break;
}
return PHPDBG_G(php_stdiop_write)(stream, buf, count);
}
/* copied from sapi/cli/php_cli.c cli_register_file_handles */
void phpdbg_register_file_handles(void) /* {{{ */
{
zval zin, zout, zerr;
php_stream *s_in, *s_out, *s_err;
php_stream_context *sc_in=NULL, *sc_out=NULL, *sc_err=NULL;
zend_constant ic, oc, ec;
s_in = php_stream_open_wrapper_ex("php://stdin", "rb", 0, NULL, sc_in);
s_out = php_stream_open_wrapper_ex("php://stdout", "wb", 0, NULL, sc_out);
s_err = php_stream_open_wrapper_ex("php://stderr", "wb", 0, NULL, sc_err);
if (s_in==NULL || s_out==NULL || s_err==NULL) {
if (s_in) php_stream_close(s_in);
if (s_out) php_stream_close(s_out);
if (s_err) php_stream_close(s_err);
return;
}
#if PHP_DEBUG
/* do not close stdout and stderr */
s_out->flags |= PHP_STREAM_FLAG_NO_CLOSE;
s_err->flags |= PHP_STREAM_FLAG_NO_CLOSE;
#endif
php_stream_to_zval(s_in, &zin);
php_stream_to_zval(s_out, &zout);
php_stream_to_zval(s_err, &zerr);
ic.value = zin;
Z_CONSTANT_FLAGS(ic.value) = 0;
ic.name = zend_string_init(ZEND_STRL("STDIN"), 0);
zend_hash_del(EG(zend_constants), ic.name);
zend_register_constant(&ic);
oc.value = zout;
Z_CONSTANT_FLAGS(oc.value) = 0;
oc.name = zend_string_init(ZEND_STRL("STDOUT"), 0);
zend_hash_del(EG(zend_constants), oc.name);
zend_register_constant(&oc);
ec.value = zerr;
Z_CONSTANT_FLAGS(ec.value) = 0;
ec.name = zend_string_init(ZEND_STRL("STDERR"), 0);
zend_hash_del(EG(zend_constants), ec.name);
zend_register_constant(&ec);
}
/* }}} */
/* {{{ sapi_module_struct phpdbg_sapi_module */
static sapi_module_struct phpdbg_sapi_module = {
"phpdbg", /* name */
"phpdbg", /* pretty name */
php_sapi_phpdbg_module_startup, /* startup */
php_module_shutdown_wrapper, /* shutdown */
php_sapi_phpdbg_activate, /* activate */
php_sapi_phpdbg_deactivate, /* deactivate */
php_sapi_phpdbg_ub_write, /* unbuffered write */
NULL, /* flush */
NULL, /* get uid */
NULL, /* getenv */
php_error, /* error handler */
php_sapi_phpdbg_header_handler, /* header handler */
php_sapi_phpdbg_send_headers, /* send headers handler */
php_sapi_phpdbg_send_header, /* send header handler */
NULL, /* read POST data */
php_sapi_phpdbg_read_cookies, /* read Cookies */
php_sapi_phpdbg_register_vars, /* register server variables */
php_sapi_phpdbg_log_message, /* Log message */
NULL, /* Get request time */
NULL, /* Child terminate */
STANDARD_SAPI_MODULE_PROPERTIES
};
/* }}} */
static const opt_struct OPTIONS[] = { /* {{{ */
{'c', 1, "ini path override"},
{'d', 1, "define ini entry on command line"},
{'n', 0, "no php.ini"},
{'z', 1, "load zend_extension"},
/* phpdbg options */
{'q', 0, "no banner"},
{'v', 0, "disable quietness"},
{'b', 0, "boring colours"},
{'i', 1, "specify init"},
{'I', 0, "ignore init"},
{'O', 1, "opline log"},
{'r', 0, "run"},
{'e', 0, "generate ext_stmt opcodes"},
{'E', 0, "step-through-eval"},
{'s', 1, "script from stdin"},
{'S', 1, "sapi-name"},
{'p', 2, "show opcodes"},
{'h', 0, "help"},
{'V', 0, "version"},
{'-', 0, NULL}
}; /* }}} */
const char phpdbg_ini_hardcoded[] =
"html_errors=Off\n"
"register_argc_argv=On\n"
"implicit_flush=On\n"
"display_errors=Off\n"
"log_errors=On\n"
"max_execution_time=0\n"
"max_input_time=-1\n"
"error_log=\n"
"output_buffering=off\n";