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phpdbg.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 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> |
+----------------------------------------------------------------------+
*/
#if !defined(ZEND_SIGNALS) || defined(_WIN32)
# include <signal.h>
#endif
#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_eol.h"
/* {{{ remote console headers */
#ifndef _WIN32
# include <sys/socket.h>
# include <sys/select.h>
# include <sys/time.h>
# include <sys/types.h>
# include <sys/poll.h>
# include <netinet/in.h>
# include <unistd.h>
# include <arpa/inet.h>
#endif /* }}} */
ZEND_DECLARE_MODULE_GLOBALS(phpdbg);
static PHP_INI_MH(OnUpdateEol)
{
if (!new_value) {
return FAILURE;
}
return phpdbg_eol_global_update(new_value->val TSRMLS_CC);
}
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("phpdbg.path", "", PHP_INI_SYSTEM | PHP_INI_PERDIR, OnUpdateString, socket_path, zend_phpdbg_globals, phpdbg_globals)
STD_PHP_INI_ENTRY("phpdbg.eol", "2", PHP_INI_ALL, OnUpdateEol, socket_path, zend_phpdbg_globals, phpdbg_globals)
PHP_INI_END()
static zend_bool phpdbg_booted = 0;
#if PHP_VERSION_ID >= 50500
void (*zend_execute_old)(zend_execute_data *execute_data TSRMLS_DC);
#else
void (*zend_execute_old)(zend_op_array *op_array TSRMLS_DC);
#endif
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->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;
pg->oplog = NULL;
memset(pg->io, 0, sizeof(pg->io));
pg->frame.num = 0;
pg->sapi_name_ptr = NULL;
pg->socket_fd = -1;
pg->socket_server_fd = -1;
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;
#ifdef PHP_WIN32
pg->sigio_watcher_thread = INVALID_HANDLE_VALUE;
memset(&pg->swd, 0, sizeof(struct win32_sigio_watcher_data));
#endif
pg->eol = PHPDBG_EOL_LF;
} /* }}} */
static PHP_MINIT_FUNCTION(phpdbg) /* {{{ */
{
ZEND_INIT_MODULE_GLOBALS(phpdbg, php_phpdbg_globals_ctor, NULL);
REGISTER_INI_ENTRIES();
#if PHP_VERSION_ID >= 50500
zend_execute_old = zend_execute_ex;
zend_execute_ex = phpdbg_execute_ex;
#else
zend_execute_old = zend_execute;
zend_execute = phpdbg_execute_ex;
#endif
REGISTER_STRINGL_CONSTANT("PHPDBG_VERSION", PHPDBG_VERSION, sizeof(PHPDBG_VERSION)-1, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_FILE", FILE_PARAM, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_METHOD", METHOD_PARAM, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_LINENO", NUMERIC_PARAM, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_FUNC", STR_PARAM, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_COLOR_PROMPT", PHPDBG_COLOR_PROMPT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_COLOR_NOTICE", PHPDBG_COLOR_NOTICE, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHPDBG_COLOR_ERROR", PHPDBG_COLOR_ERROR, CONST_CS|CONST_PERSISTENT);
return SUCCESS;
} /* }}} */
static void php_phpdbg_destroy_bp_file(zval *brake) /* {{{ */
{
zend_hash_destroy(Z_ARRVAL_P(brake));
} /* }}} */
static void php_phpdbg_destroy_bp_symbol(zval *brake) /* {{{ */
{
efree((char *) ((phpdbg_breaksymbol_t *) Z_PTR_P(brake))->symbol);
} /* }}} */
static void php_phpdbg_destroy_bp_opcode(zval *brake) /* {{{ */
{
efree((char *) ((phpdbg_breakop_t *) Z_PTR_P(brake))->name);
} /* }}} */
static void php_phpdbg_destroy_bp_methods(zval *brake) /* {{{ */
{
zend_hash_destroy(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) {
if (brake->ops) {
TSRMLS_FETCH();
destroy_op_array(brake->ops TSRMLS_CC);
efree(brake->ops);
}
efree((char*) brake->code);
}
} /* }}} */
static void php_phpdbg_destroy_registered(zval *data) /* {{{ */
{
zend_function *function = (zend_function *) Z_PTR_P(data);
TSRMLS_FETCH();
destroy_zend_function(function TSRMLS_CC);
} /* }}} */
static PHP_RINIT_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_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, NULL, 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);
return SUCCESS;
} /* }}} */
static PHP_RSHUTDOWN_FUNCTION(phpdbg) /* {{{ */
{
zend_hash_destroy(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE]);
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));
zend_hash_destroy(&PHPDBG_G(registered));
zend_hash_destroy(&PHPDBG_G(file_sources));
zend_hash_destroy(&PHPDBG_G(watchpoints));
zend_llist_destroy(&PHPDBG_G(watchlist_mem));
if (PHPDBG_G(buffer)) {
efree(PHPDBG_G(buffer));
PHPDBG_G(buffer) = NULL;
}
if (PHPDBG_G(exec)) {
efree(PHPDBG_G(exec));
PHPDBG_G(exec) = NULL;
}
if (PHPDBG_G(prompt)[0]) {
free(PHPDBG_G(prompt)[0]);
}
if (PHPDBG_G(prompt)[1]) {
free(PHPDBG_G(prompt)[1]);
}
PHPDBG_G(prompt)[0] = NULL;
PHPDBG_G(prompt)[1] = NULL;
if (PHPDBG_G(oplog)) {
fclose(
PHPDBG_G(oplog));
PHPDBG_G(oplog) = NULL;
}
if (PHPDBG_G(ops)) {
destroy_op_array(PHPDBG_G(ops) TSRMLS_CC);
efree(PHPDBG_G(ops));
PHPDBG_G(ops) = NULL;
}
return SUCCESS;
} /* }}} */
/* {{{ proto mixed phpdbg_exec(string context)
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 */
static PHP_FUNCTION(phpdbg_exec)
{
zend_string *exec;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "S", &exec) == FAILURE) {
return;
}
{
struct stat sb;
zend_bool result = 1;
if (VCWD_STAT(exec->val, &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));
efree(PHPDBG_G(exec));
result = 0;
}
PHPDBG_G(exec) = estrndup(exec->val, exec->len);
PHPDBG_G(exec_len) = exec->len;
if (result) {
ZVAL_BOOL(return_value, 1);
}
} else {
zend_error(E_WARNING, "Failed to set execution context (%s), not a regular file or symlink", exec);
ZVAL_BOOL(return_value, 0);
}
} else {
zend_error(E_WARNING, "Failed to set execution context (%s) the file does not exist", exec);
ZVAL_BOOL(return_value, 0);
}
}
} /* }}} */
/* {{{ proto void phpdbg_break([integer type, string expression])
instructs phpdbg to insert a breakpoint at the next opcode */
static PHP_FUNCTION(phpdbg_break)
{
if (ZEND_NUM_ARGS() > 0) {
long type = 0;
char *expr = NULL;
int expr_len = 0;
phpdbg_param_t param;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ls", &type, &expr, &expr_len) == FAILURE) {
return;
}
phpdbg_parse_param(expr, expr_len, ¶m TSRMLS_CC);
phpdbg_do_break(¶m TSRMLS_CC);
phpdbg_clear_param(¶m TSRMLS_CC);
} else if (EG(current_execute_data) && EG(current_execute_data)->func->type != ZEND_INTERNAL_FUNCTION) {
phpdbg_set_breakpoint_opline_ex((phpdbg_opline_ptr_t) EG(current_execute_data)->opline + 1 TSRMLS_CC);
}
} /* }}} */
/* {{{ proto void phpdbg_clear(void)
instructs phpdbg to clear breakpoints */
static PHP_FUNCTION(phpdbg_clear)
{
zend_hash_clean(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE]);
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_COND]);
} /* }}} */
/* {{{ proto void phpdbg_color(integer element, string color) */
static PHP_FUNCTION(phpdbg_color)
{
long element = 0L;
char *color = NULL;
size_t color_len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ls", &element, &color, &color_len) == FAILURE) {
return;
}
switch (element) {
case PHPDBG_COLOR_NOTICE:
case PHPDBG_COLOR_ERROR:
case PHPDBG_COLOR_PROMPT:
phpdbg_set_color_ex(element, color, color_len TSRMLS_CC);
break;
default: zend_error(E_ERROR, "phpdbg detected an incorrect color constant");
}
} /* }}} */
/* {{{ proto void phpdbg_prompt(string prompt) */
static PHP_FUNCTION(phpdbg_prompt)
{
char *prompt = NULL;
size_t prompt_len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &prompt, &prompt_len) == FAILURE) {
return;
}
phpdbg_set_prompt(prompt TSRMLS_CC);
} /* }}} */
ZEND_BEGIN_ARG_INFO_EX(phpdbg_break_arginfo, 0, 0, 0)
ZEND_ARG_INFO(0, type)
ZEND_ARG_INFO(0, expression)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(phpdbg_color_arginfo, 0, 0, 0)
ZEND_ARG_INFO(0, element)
ZEND_ARG_INFO(0, color)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(phpdbg_prompt_arginfo, 0, 0, 0)
ZEND_ARG_INFO(0, string)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(phpdbg_exec_arginfo, 0, 0, 0)
ZEND_ARG_INFO(0, context)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(phpdbg_clear_arginfo, 0, 0, 0)
ZEND_END_ARG_INFO()
zend_function_entry phpdbg_user_functions[] = {
PHP_FE(phpdbg_clear, phpdbg_clear_arginfo)
PHP_FE(phpdbg_break, phpdbg_break_arginfo)
PHP_FE(phpdbg_exec, phpdbg_exec_arginfo)
PHP_FE(phpdbg_color, phpdbg_color_arginfo)
PHP_FE(phpdbg_prompt, phpdbg_prompt_arginfo)
#ifdef PHP_FE_END
PHP_FE_END
#else
{NULL,NULL,NULL}
#endif
};
static zend_module_entry sapi_phpdbg_module_entry = {
STANDARD_MODULE_HEADER,
PHPDBG_NAME,
phpdbg_user_functions,
PHP_MINIT(phpdbg),
NULL,
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, 1) == FAILURE) {
return FAILURE;
}
phpdbg_booted=1;
return SUCCESS;
} /* }}} */
static char* php_sapi_phpdbg_read_cookies(TSRMLS_D) /* {{{ */
{
return NULL;
} /* }}} */
static int php_sapi_phpdbg_header_handler(sapi_header_struct *h, sapi_header_op_enum op, sapi_headers_struct *s TSRMLS_DC) /* {{{ */
{
return 0;
}
/* }}} */
static int php_sapi_phpdbg_send_headers(sapi_headers_struct *sapi_headers TSRMLS_DC) /* {{{ */
{
/* 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 TSRMLS_DC) /* {{{ */
{
}
/* }}} */
static void php_sapi_phpdbg_log_message(char *message TSRMLS_DC) /* {{{ */
{
/*
* We must not request TSRM before being boot
*/
if (phpdbg_booted) {
if (PHPDBG_G(flags) & PHPDBG_IN_EVAL) {
phpdbg_error("eval", "msg=\"%s\"", "%s", message);
return;
}
phpdbg_error("php", "msg=\"%s\"", "%s", message);
switch (PG(last_error_type)) {
case E_ERROR:
case E_CORE_ERROR:
case E_COMPILE_ERROR:
case E_USER_ERROR:
case E_PARSE:
case E_RECOVERABLE_ERROR:
if (!(PHPDBG_G(flags) & PHPDBG_IN_EVAL)) {
const char *file_char = zend_get_executed_filename(TSRMLS_C);
zend_string *file = zend_string_init(file_char, strlen(file_char), 0);
phpdbg_list_file(file, 3, zend_get_executed_lineno(TSRMLS_C) - 1, zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
efree(file);
}
do {
switch (phpdbg_interactive(1 TSRMLS_CC)) {
case PHPDBG_LEAVE:
case PHPDBG_FINISH:
case PHPDBG_UNTIL:
case PHPDBG_NEXT:
return;
}
} while (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING));
}
} else fprintf(stdout, "%s\n", message);
}
/* }}} */
static int php_sapi_phpdbg_deactivate(TSRMLS_D) /* {{{ */
{
fflush(stdout);
if(SG(request_info).argv0) {
free(SG(request_info).argv0);
SG(request_info).argv0 = NULL;
}
return SUCCESS;
}
/* }}} */
static void php_sapi_phpdbg_register_vars(zval *track_vars_array TSRMLS_DC) /* {{{ */
{
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 TSRMLS_CC);
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 TSRMLS_CC)) {
php_register_variable("PHP_SELF", PHPDBG_G(exec), track_vars_array TSRMLS_CC);
}
if (sapi_module.input_filter(PARSE_SERVER, "SCRIPT_NAME", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len TSRMLS_CC)) {
php_register_variable("SCRIPT_NAME", PHPDBG_G(exec), track_vars_array TSRMLS_CC);
}
if (sapi_module.input_filter(PARSE_SERVER, "SCRIPT_FILENAME", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len TSRMLS_CC)) {
php_register_variable("SCRIPT_FILENAME", PHPDBG_G(exec), track_vars_array TSRMLS_CC);
}
if (sapi_module.input_filter(PARSE_SERVER, "PATH_TRANSLATED", &PHPDBG_G(exec), PHPDBG_G(exec_len), &len TSRMLS_CC)) {
php_register_variable("PATH_TRANSLATED", PHPDBG_G(exec), track_vars_array TSRMLS_CC);
}
}
/* any old docroot will do */
len = 0;
if (sapi_module.input_filter(PARSE_SERVER, "DOCUMENT_ROOT", &docroot, len, &len TSRMLS_CC)) {
php_register_variable("DOCUMENT_ROOT", docroot, track_vars_array TSRMLS_CC);
}
}
/* }}} */
static inline size_t php_sapi_phpdbg_ub_write(const char *message, size_t length TSRMLS_DC) /* {{{ */
{
if (PHPDBG_G(socket_fd) != -1 && !(PHPDBG_G(flags) & PHPDBG_IS_INTERACTIVE)) {
send(PHPDBG_G(socket_fd), message, length, 0);
}
return phpdbg_script(P_STDOUT, "%.*s", length, message);
} /* }}} */
/* beginning of struct, see main/streams/plain_wrapper.c line 111 */
typedef struct {
FILE *file;
int fd;
} php_stdio_stream_data;
static size_t phpdbg_stdiop_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC) {
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
while (data->fd >= 0) {
struct stat stat[3];
memset(stat, 0, sizeof(stat));
if (((fstat(fileno(stderr), &stat[2]) < 0) & (fstat(fileno(stdout), &stat[0]) < 0)) | (fstat(data->fd, &stat[1]) < 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 TSRMLS_CC);
}
#if PHP_VERSION_ID >= 50700
static inline void php_sapi_phpdbg_flush(void *context TSRMLS_DC) /* {{{ */
{
#else
static inline void php_sapi_phpdbg_flush(void *context) /* {{{ */
{
TSRMLS_FETCH();
#endif
if (!phpdbg_active_sigsafe_mem(TSRMLS_C)) {
fflush(PHPDBG_G(io)[PHPDBG_STDOUT].ptr);
}
} /* }}} */
/* copied from sapi/cli/php_cli.c cli_register_file_handles */
static void phpdbg_register_file_handles(TSRMLS_D) /* {{{ */
{
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;
ic.flags = CONST_CS;
ic.name = zend_string_init(ZEND_STRL("STDIN"), 0);
ic.module_number = 0;
zend_register_constant(&ic TSRMLS_CC);
oc.value = zout;
oc.flags = CONST_CS;
oc.name = zend_string_init(ZEND_STRL("STDOUT"), 0);
oc.module_number = 0;
zend_register_constant(&oc TSRMLS_CC);
ec.value = zerr;
ec.flags = CONST_CS;
ec.name = zend_string_init(ZEND_STRL("STDERR"), 0);
ec.module_number = 0;
zend_register_constant(&ec TSRMLS_CC);
}
/* }}} */
/* {{{ 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 */
NULL, /* activate */
php_sapi_phpdbg_deactivate, /* deactivate */
php_sapi_phpdbg_ub_write, /* unbuffered write */
php_sapi_phpdbg_flush, /* 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
};
/* }}} */
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"},
{'s', 0, "enable stepping"},
{'b', 0, "boring colours"},
{'i', 1, "specify init"},
{'I', 0, "ignore init"},
{'O', 1, "opline log"},
{'r', 0, "run"},
{'E', 0, "step-through-eval"},
{'S', 1, "sapi-name"},
#ifndef _WIN32
{'l', 1, "listen"},
{'a', 1, "address-or-any"},
#endif
{'x', 0, "xml output"},
{'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\0";
/* overwriteable ini defaults must be set in phpdbg_ini_defaults() */
#define INI_DEFAULT(name, value) \
ZVAL_STRINGL(&tmp, value, sizeof(value) - 1); \
Z_SET_REFCOUNT(tmp, 0); \
zend_hash_str_update(configuration_hash, name, sizeof(name) - 1, &tmp);
void phpdbg_ini_defaults(HashTable *configuration_hash) /* {{{ */
{
zval tmp;
INI_DEFAULT("report_zend_debug", "0");
} /* }}} */
static void phpdbg_welcome(zend_bool cleaning TSRMLS_DC) /* {{{ */
{
/* print blurb */
if (!cleaning) {
phpdbg_xml("<intros>");
phpdbg_notice("intro", "version=\"%s\"", "Welcome to phpdbg, the interactive PHP debugger, v%s", PHPDBG_VERSION);
phpdbg_writeln("intro", "help=\"help\"", "To get help using phpdbg type \"help\" and press enter");
phpdbg_notice("intro", "report=\"%s\"", "Please report bugs to <%s>", PHPDBG_ISSUES);
phpdbg_xml("</intros>");
} else {
if (!(PHPDBG_G(flags) & PHPDBG_WRITE_XML)) {
phpdbg_notice(NULL, NULL, "Clean Execution Environment");
}
phpdbg_write("cleaninfo", "classes=\"%d\" functions=\"%d\" constants=\"%d\" includes=\"%d\"",
"Classes %d\n"
"Functions %d\n"
"Constants %d\n"
"Includes %d\n",
zend_hash_num_elements(EG(class_table)),
zend_hash_num_elements(EG(function_table)),
zend_hash_num_elements(EG(zend_constants)),
zend_hash_num_elements(&EG(included_files)));
}
} /* }}} */
static inline void phpdbg_sigint_handler(int signo) /* {{{ */
{
TSRMLS_FETCH();
if (PHPDBG_G(flags) & PHPDBG_IS_INTERACTIVE) {
/* we quit remote consoles on recv SIGINT */
if (PHPDBG_G(flags) & PHPDBG_IS_REMOTE) {
PHPDBG_G(flags) |= PHPDBG_IS_QUITTING;
zend_bailout();
}
} else {
/* set signalled only when not interactive */
if (!(PHPDBG_G(flags) & PHPDBG_IS_INTERACTIVE)) {
if (PHPDBG_G(flags) & PHPDBG_IS_SIGNALED) {
char mem[PHPDBG_SIGSAFE_MEM_SIZE + 1];
phpdbg_set_sigsafe_mem(mem TSRMLS_CC);
zend_try {
phpdbg_force_interruption(TSRMLS_C);
} zend_end_try()
phpdbg_clear_sigsafe_mem(TSRMLS_C);
return;
}
PHPDBG_G(flags) |= PHPDBG_IS_SIGNALED;
}
}
} /* }}} */
static void phpdbg_remote_close(int socket, FILE *stream) {
if (socket >= 0) {
phpdbg_close_socket(socket);
}
if (stream) {
fclose(stream);
}
}
/* don't inline this, want to debug it easily, will inline when done */
static int phpdbg_remote_init(const char* address, unsigned short port, int server, int *socket, FILE **stream TSRMLS_DC) {
phpdbg_remote_close(*socket, *stream);
if (server < 0) {
phpdbg_rlog(fileno(stderr), "Initializing connection on %s:%u failed", address, port);
return FAILURE;
}
phpdbg_rlog(fileno(stderr), "accepting connections on %s:%u", address, port);
{
struct sockaddr_storage address;
socklen_t size = sizeof(address);
char buffer[20] = {0};
/* XXX error checks */
memset(&address, 0, size);
*socket = accept(server, (struct sockaddr *) &address, &size);
inet_ntop(AF_INET, &(((struct sockaddr_in *)&address)->sin_addr), buffer, sizeof(buffer));
phpdbg_rlog(fileno(stderr), "connection established from %s", buffer);
}
#ifndef _WIN32
dup2(*socket, fileno(stdout));
dup2(*socket, fileno(stdin));
setbuf(stdout, NULL);
*stream = fdopen(*socket, "r+");
phpdbg_set_async_io(*socket);
#endif
return SUCCESS;
}
#ifndef _WIN32
/* This function *strictly* assumes that SIGIO is *only* used on the remote connection stream */
void phpdbg_sigio_handler(int sig, siginfo_t *info, void *context) /* {{{ */
{
int flags;
size_t newlen;
size_t i/*, last_nl*/;
TSRMLS_FETCH();
// if (!(info->si_band & POLLIN)) {
// return; /* Not interested in writeablility etc., just interested in incoming data */
// }
/* only non-blocking reading, avoid non-blocking writing */
flags = fcntl(PHPDBG_G(io)[PHPDBG_STDIN].fd, F_GETFL, 0);
fcntl(PHPDBG_G(io)[PHPDBG_STDIN].fd, F_SETFL, flags | O_NONBLOCK);
do {
char mem[PHPDBG_SIGSAFE_MEM_SIZE + 1];
size_t off = 0;
if ((newlen = recv(PHPDBG_G(io)[PHPDBG_STDIN].fd, mem, PHPDBG_SIGSAFE_MEM_SIZE, MSG_PEEK)) == (size_t) -1) {
break;
}
for (i = 0; i < newlen; i++) {
switch (mem[off + i]) {
case '\x03': /* ^C char */
if (PHPDBG_G(flags) & PHPDBG_IS_INTERACTIVE) {
break; /* or quit ??? */
}
if (PHPDBG_G(flags) & PHPDBG_IS_SIGNALED) {
phpdbg_set_sigsafe_mem(mem TSRMLS_CC);
zend_try {
phpdbg_force_interruption(TSRMLS_C);
} zend_end_try();
phpdbg_clear_sigsafe_mem(TSRMLS_C);
break;
}
if (!(PHPDBG_G(flags) & PHPDBG_IS_INTERACTIVE)) {
PHPDBG_G(flags) |= PHPDBG_IS_SIGNALED;
}
break;
/* case '\n':
zend_llist_add_element(PHPDBG_G(stdin), strndup()
last_nl = PHPDBG_G(stdin_buf).len + i;
break;
*/ }
}
off += i;
} while (0);
fcntl(PHPDBG_G(io)[PHPDBG_STDIN].fd, F_SETFL, flags);
} /* }}} */
void phpdbg_signal_handler(int sig, siginfo_t *info, void *context) /* {{{ */
{
int is_handled = FAILURE;
TSRMLS_FETCH();
switch (sig) {
case SIGBUS:
case SIGSEGV:
if (PHPDBG_G(sigsegv_bailout)) {
LONGJMP(*PHPDBG_G(sigsegv_bailout), FAILURE);
}
is_handled = phpdbg_watchpoint_segfault_handler(info, context TSRMLS_CC);
if (is_handled == FAILURE) {
#ifdef ZEND_SIGNALS
zend_sigaction(sig, &PHPDBG_G(old_sigsegv_signal), NULL TSRMLS_CC);
#else
sigaction(sig, &PHPDBG_G(old_sigsegv_signal), NULL);
#endif
}
break;
}
} /* }}} */
#endif
static inline zend_mm_heap *phpdbg_mm_get_heap() /* {{{ */
{
zend_mm_heap *mm_heap;
TSRMLS_FETCH();
mm_heap = zend_mm_set_heap(NULL TSRMLS_CC);
zend_mm_set_heap(mm_heap TSRMLS_CC);
return mm_heap;
} /* }}} */
void *phpdbg_malloc_wrapper(size_t size) /* {{{ */
{
return zend_mm_alloc(phpdbg_mm_get_heap(), size);
} /* }}} */
void phpdbg_free_wrapper(void *p) /* {{{ */
{
zend_mm_free(phpdbg_mm_get_heap(), p);
} /* }}} */
void *phpdbg_realloc_wrapper(void *ptr, size_t size) /* {{{ */
{
return zend_mm_realloc(phpdbg_mm_get_heap(), ptr, size);
} /* }}} */
int main(int argc, char **argv) /* {{{ */
{
sapi_module_struct *phpdbg = &phpdbg_sapi_module;
char *sapi_name;
char *ini_entries;
int ini_entries_len;
char **zend_extensions = NULL;
zend_ulong zend_extensions_len = 0L;
zend_bool ini_ignore;
char *ini_override;
char *exec;
size_t exec_len;
char *init_file;
size_t init_file_len;
zend_bool init_file_default;
char *oplog_file;
size_t oplog_file_len;
zend_ulong flags;
char *php_optarg;
int php_optind, opt, show_banner = 1;
long cleaning = 0;
zend_bool remote = 0;
int run = 0;
int step = 0;
#ifdef _WIN32
char *bp_tmp_file = NULL;
#else
char bp_tmp_file[] = "/tmp/phpdbg.XXXXXX";
#endif
#ifndef _WIN32
char *address;
int listen = -1;
int server = -1;
int socket = -1;
FILE* stream = NULL;
#endif
#ifdef ZTS
void ***tsrm_ls;
#endif
#ifndef _WIN32
struct sigaction sigio_struct;
struct sigaction signal_struct;
signal_struct.sa_sigaction = phpdbg_signal_handler;
signal_struct.sa_flags = SA_SIGINFO | SA_NODEFER;
sigio_struct.sa_sigaction = phpdbg_sigio_handler;
sigio_struct.sa_flags = SA_SIGINFO;
address = strdup("127.0.0.1");
#endif
#ifdef PHP_WIN32
_fmode = _O_BINARY; /* sets default for file streams to binary */
setmode(_fileno(stdin), O_BINARY); /* make the stdio mode be binary */
setmode(_fileno(stdout), O_BINARY); /* make the stdio mode be binary */
setmode(_fileno(stderr), O_BINARY); /* make the stdio mode be binary */
#endif
#ifdef ZTS
tsrm_startup(1, 1, 0, NULL);
tsrm_ls = ts_resource(0);
#endif
phpdbg_main:
if (!cleaning) {
#ifdef _WIN32