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https://github.com/php/php-src.git
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e2fcc870e3
work on parameter parsing and command resolution work on error reporting for failed arguments update most commands move quiet to set quiet move set break on/off to set breaks on/off keep set break for set break <id> <on/off> update help accordingly
817 lines
18 KiB
C
817 lines
18 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2014 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Felipe Pena <felipe@php.net> |
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| Authors: Joe Watkins <joe.watkins@live.co.uk> |
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| Authors: Bob Weinand <bwoebi@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "phpdbg.h"
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#include "phpdbg_cmd.h"
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#include "phpdbg_utils.h"
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#include "phpdbg_set.h"
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#include "phpdbg_prompt.h"
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ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
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static inline const char *phpdbg_command_name(const phpdbg_command_t *command, char *buffer) {
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size_t pos = 0;
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if (command->parent) {
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memcpy(&buffer[pos], command->parent->name, command->parent->name_len);
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pos += command->parent->name_len;
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memcpy(&buffer[pos], " ", sizeof(" ")-1);
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pos += (sizeof(" ")-1);
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}
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memcpy(&buffer[pos], command->name, command->name_len);
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pos += command->name_len;
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buffer[pos] = 0;
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return buffer;
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}
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PHPDBG_API const char *phpdbg_get_param_type(const phpdbg_param_t *param TSRMLS_DC) /* {{{ */
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{
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switch (param->type) {
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case STACK_PARAM:
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return "stack";
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case EMPTY_PARAM:
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return "empty";
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case ADDR_PARAM:
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return "address";
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case NUMERIC_PARAM:
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return "numeric";
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case METHOD_PARAM:
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return "method";
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case NUMERIC_FUNCTION_PARAM:
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return "function opline";
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case NUMERIC_METHOD_PARAM:
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return "method opline";
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case FILE_PARAM:
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return "file or file opline";
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case STR_PARAM:
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return "string";
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default: /* this is bad */
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return "unknown";
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}
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}
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PHPDBG_API phpdbg_param_type phpdbg_parse_param(const char *str, size_t len, phpdbg_param_t *param TSRMLS_DC) /* {{{ */
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{
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char *class_name, *func_name;
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if (len == 0) {
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param->type = EMPTY_PARAM;
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goto parsed;
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}
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if (phpdbg_is_addr(str)) {
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param->addr = strtoul(str, 0, 16);
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param->type = ADDR_PARAM;
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goto parsed;
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} else if (phpdbg_is_numeric(str)) {
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param->num = strtol(str, NULL, 0);
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param->type = NUMERIC_PARAM;
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goto parsed;
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} else if (phpdbg_is_class_method(str, len+1, &class_name, &func_name)) {
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param->method.class = class_name;
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param->method.name = func_name;
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param->type = METHOD_PARAM;
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goto parsed;
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} else {
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char *line_pos = strrchr(str, ':');
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if (line_pos && phpdbg_is_numeric(line_pos+1)) {
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if (strchr(str, ':') == line_pos) {
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char path[MAXPATHLEN];
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memcpy(path, str, line_pos - str);
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path[line_pos - str] = 0;
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*line_pos = 0;
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param->file.name = phpdbg_resolve_path(path TSRMLS_CC);
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param->file.line = strtol(line_pos+1, NULL, 0);
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param->type = FILE_PARAM;
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goto parsed;
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}
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}
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line_pos = strrchr(str, '#');
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if (line_pos && phpdbg_is_numeric(line_pos+1)) {
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if (strchr(str, '#') == line_pos) {
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param->num = strtol(line_pos + 1, NULL, 0);
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if (phpdbg_is_class_method(str, line_pos - str, &class_name, &func_name)) {
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param->method.class = class_name;
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param->method.name = func_name;
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param->type = NUMERIC_METHOD_PARAM;
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} else {
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param->len = line_pos - str;
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param->str = estrndup(str, param->len);
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param->type = NUMERIC_FUNCTION_PARAM;
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}
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goto parsed;
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}
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}
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}
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param->str = estrndup(str, len);
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param->len = len;
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param->type = STR_PARAM;
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parsed:
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phpdbg_debug("phpdbg_parse_param(\"%s\", %lu): %s",
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str, len, phpdbg_get_param_type(param TSRMLS_CC));
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return param->type;
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} /* }}} */
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PHPDBG_API void phpdbg_clear_param(phpdbg_param_t *param TSRMLS_DC) /* {{{ */
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{
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if (param) {
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switch (param->type) {
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case FILE_PARAM:
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efree(param->file.name);
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break;
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case METHOD_PARAM:
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efree(param->method.class);
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efree(param->method.name);
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break;
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case STR_PARAM:
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efree(param->str);
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break;
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default:
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break;
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}
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}
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} /* }}} */
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PHPDBG_API char* phpdbg_param_tostring(const phpdbg_param_t *param, char **pointer TSRMLS_DC) /* {{{ */
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{
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switch (param->type) {
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case STR_PARAM:
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asprintf(pointer,
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"%s", param->str);
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break;
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case ADDR_PARAM:
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asprintf(pointer,
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"%#lx", param->addr);
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break;
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case NUMERIC_PARAM:
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asprintf(pointer,
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"%li",
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param->num);
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break;
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case METHOD_PARAM:
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asprintf(pointer,
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"%s::%s",
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param->method.class,
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param->method.name);
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break;
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case FILE_PARAM:
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if (param->num) {
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asprintf(pointer,
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"%s:%lu#%lu",
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param->file.name,
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param->file.line,
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param->num);
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} else {
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asprintf(pointer,
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"%s:%lu",
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param->file.name,
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param->file.line);
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}
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break;
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case NUMERIC_FUNCTION_PARAM:
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asprintf(pointer,
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"%s#%lu", param->str, param->num);
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break;
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case NUMERIC_METHOD_PARAM:
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asprintf(pointer,
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"%s::%s#%lu",
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param->method.class,
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param->method.name,
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param->num);
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break;
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default:
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asprintf(pointer,
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"%s", "unknown");
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}
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return *pointer;
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} /* }}} */
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PHPDBG_API void phpdbg_copy_param(const phpdbg_param_t* src, phpdbg_param_t* dest TSRMLS_DC) /* {{{ */
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{
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switch ((dest->type = src->type)) {
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case STACK_PARAM:
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/* nope */
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break;
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case STR_PARAM:
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dest->str = estrndup(src->str, src->len);
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dest->len = src->len;
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break;
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case ADDR_PARAM:
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dest->addr = src->addr;
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break;
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case NUMERIC_PARAM:
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dest->num = src->num;
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break;
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case METHOD_PARAM:
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dest->method.class = estrdup(src->method.class);
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dest->method.name = estrdup(src->method.name);
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break;
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case FILE_PARAM:
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dest->file.name = estrdup(src->file.name);
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dest->file.line = src->file.line;
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if (src->num)
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dest->num = src->num;
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break;
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case NUMERIC_FUNCTION_PARAM:
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dest->str = estrndup(src->str, src->len);
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dest->num = src->num;
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dest->len = src->len;
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break;
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case NUMERIC_METHOD_PARAM:
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dest->method.class = estrdup(src->method.class);
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dest->method.name = estrdup(src->method.name);
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dest->num = src->num;
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break;
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case EMPTY_PARAM: { /* do nothing */ } break;
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default: {
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/* not yet */
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}
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}
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} /* }}} */
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PHPDBG_API zend_ulong phpdbg_hash_param(const phpdbg_param_t *param TSRMLS_DC) /* {{{ */
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{
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zend_ulong hash = param->type;
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switch (param->type) {
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case STACK_PARAM:
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/* nope */
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break;
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case STR_PARAM:
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hash += zend_inline_hash_func(param->str, param->len);
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break;
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case METHOD_PARAM:
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hash += zend_inline_hash_func(param->method.class, strlen(param->method.class));
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hash += zend_inline_hash_func(param->method.name, strlen(param->method.name));
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break;
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case FILE_PARAM:
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hash += zend_inline_hash_func(param->file.name, strlen(param->file.name));
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hash += param->file.line;
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if (param->num)
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hash += param->num;
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break;
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case ADDR_PARAM:
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hash += param->addr;
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break;
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case NUMERIC_PARAM:
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hash += param->num;
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break;
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case NUMERIC_FUNCTION_PARAM:
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hash += zend_inline_hash_func(param->str, param->len);
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hash += param->num;
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break;
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case NUMERIC_METHOD_PARAM:
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hash += zend_inline_hash_func(param->method.class, strlen(param->method.class));
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hash += zend_inline_hash_func(param->method.name, strlen(param->method.name));
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if (param->num)
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hash+= param->num;
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break;
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case EMPTY_PARAM: { /* do nothing */ } break;
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default: {
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/* not yet */
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}
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}
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return hash;
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} /* }}} */
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PHPDBG_API zend_bool phpdbg_match_param(const phpdbg_param_t *l, const phpdbg_param_t *r TSRMLS_DC) /* {{{ */
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{
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if (l && r) {
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if (l->type == r->type) {
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switch (l->type) {
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case STACK_PARAM:
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/* nope, or yep */
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return 1;
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break;
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case NUMERIC_FUNCTION_PARAM:
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if (l->num != r->num) {
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break;
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}
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/* break intentionally omitted */
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case STR_PARAM:
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return (l->len == r->len) &&
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(memcmp(l->str, r->str, l->len) == SUCCESS);
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case NUMERIC_PARAM:
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return (l->num == r->num);
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case ADDR_PARAM:
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return (l->addr == r->addr);
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case FILE_PARAM: {
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if (l->file.line == r->file.line) {
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size_t lengths[2] = {
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strlen(l->file.name), strlen(r->file.name)};
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if (lengths[0] == lengths[1]) {
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if ((!l->num && !r->num) || (l->num == r->num)) {
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return (memcmp(
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l->file.name, r->file.name, lengths[0]) == SUCCESS);
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}
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}
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}
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} break;
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case NUMERIC_METHOD_PARAM:
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if (l->num != r->num) {
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break;
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}
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/* break intentionally omitted */
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case METHOD_PARAM: {
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size_t lengths[2] = {
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strlen(l->method.class), strlen(r->method.class)};
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if (lengths[0] == lengths[1]) {
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if (memcmp(l->method.class, r->method.class, lengths[0]) == SUCCESS) {
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lengths[0] = strlen(l->method.name);
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lengths[1] = strlen(r->method.name);
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if (lengths[0] == lengths[1]) {
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return (memcmp(
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l->method.name, r->method.name, lengths[0]) == SUCCESS);
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}
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}
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}
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} break;
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case EMPTY_PARAM:
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return 1;
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default: {
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/* not yet */
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}
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}
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}
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}
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return 0;
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} /* }}} */
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/* {{{ */
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PHPDBG_API void phpdbg_param_debug(const phpdbg_param_t *param, const char *msg) {
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if (param && param->type) {
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switch (param->type) {
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case STR_PARAM:
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fprintf(stderr, "%s STR_PARAM(%s=%lu)\n", msg, param->str, param->len);
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break;
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case ADDR_PARAM:
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fprintf(stderr, "%s ADDR_PARAM(%lu)\n", msg, param->addr);
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break;
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case FILE_PARAM:
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fprintf(stderr, "%s FILE_PARAM(%s:%lu)\n", msg, param->file.name, param->file.line);
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break;
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case METHOD_PARAM:
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fprintf(stderr, "%s METHOD_PARAM(%s::%s)\n", msg, param->method.class, param->method.name);
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break;
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case NUMERIC_METHOD_PARAM:
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fprintf(stderr, "%s NUMERIC_METHOD_PARAM(%s::%s)\n", msg, param->method.class, param->method.name);
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break;
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case NUMERIC_FUNCTION_PARAM:
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fprintf(stderr, "%s NUMERIC_FUNCTION_PARAM(%s::%ld)\n", msg, param->str, param->num);
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break;
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case NUMERIC_PARAM:
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fprintf(stderr, "%s NUMERIC_PARAM(%ld)\n", msg, param->num);
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break;
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case COND_PARAM:
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fprintf(stderr, "%s COND_PARAM(%s=%lu)\n", msg, param->str, param->len);
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break;
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default: {
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/* not yet */
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}
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}
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}
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} /* }}} */
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/* {{{ */
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PHPDBG_API void phpdbg_stack_free(phpdbg_param_t *stack) {
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if (stack && stack->next) {
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phpdbg_param_t *remove = stack->next;
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while (remove) {
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phpdbg_param_t *next = NULL;
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if (remove->next)
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next = remove->next;
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switch (remove->type) {
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case STR_PARAM:
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if (remove->str) {
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free(remove->str);
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}
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break;
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case FILE_PARAM:
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if (remove->file.name) {
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free(remove->file.name);
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}
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break;
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default: {
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/* nothing */
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}
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}
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free(remove);
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if (next)
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remove = next;
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else break;
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}
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}
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} /* }}} */
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/* {{{ */
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PHPDBG_API void phpdbg_stack_push(phpdbg_param_t *stack, phpdbg_param_t *param) {
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phpdbg_param_t *next = calloc(1, sizeof(phpdbg_param_t));
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|
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if (!next)
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return;
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|
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*(next) = *(param);
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|
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if (stack->top == NULL) {
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stack->top = next;
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stack->next = next;
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} else {
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stack->top->next = next;
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next->top = stack->top;
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stack->top = next;
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}
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stack->len++;
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} /* }}} */
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PHPDBG_API int phpdbg_stack_verify(const phpdbg_command_t *command, phpdbg_param_t **stack, char **why TSRMLS_DC) {
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if (command && command->args) {
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char buffer[128] = {0,};
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const phpdbg_param_t *top = (stack != NULL) ? *stack : NULL;
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const char *arg = command->args;
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size_t least = 0L,
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received = 0L,
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current = 0L;
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zend_bool optional = 0;
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/* check for arg spec */
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if (!(arg) || !(*arg))
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return SUCCESS;
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least = 0L;
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/* count least amount of arguments */
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|
while (arg && *arg) {
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if (arg[0] == '|') {
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break;
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}
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least++;
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arg++;
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}
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arg = command->args;
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#define verify_arg(e, a, t) if (!(a)) { \
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if (!optional) { \
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asprintf(why, \
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"%s expected %s and got nothing at parameter %lu", \
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phpdbg_command_name(command, buffer), \
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(e), \
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current); \
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return FAILURE;\
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} \
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} else if ((a)->type != (t)) { \
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asprintf(why, \
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"%s expected %s and got %s at parameter %lu", \
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phpdbg_command_name(command, buffer), \
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(e),\
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phpdbg_get_param_type((a) TSRMLS_CC), \
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current); \
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return FAILURE; \
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}
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|
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while (arg) {
|
|
current++;
|
|
|
|
switch (*arg) {
|
|
case '|': {
|
|
current--;
|
|
optional = 1;
|
|
arg++;
|
|
} continue;
|
|
|
|
case 'i': verify_arg("raw input", top, STR_PARAM); break;
|
|
case 's': verify_arg("string", top, STR_PARAM); break;
|
|
case 'n': verify_arg("number", top, NUMERIC_PARAM); break;
|
|
case 'm': verify_arg("method", top, METHOD_PARAM); break;
|
|
case 'a': verify_arg("address", top, ADDR_PARAM); break;
|
|
case 'f': verify_arg("file:line", top, FILE_PARAM); break;
|
|
case 'c': verify_arg("condition", top, COND_PARAM); break;
|
|
case 'b': verify_arg("boolean", top, NUMERIC_PARAM); break;
|
|
|
|
case '*': { /* do nothing */ } break;
|
|
}
|
|
|
|
if (top ) {
|
|
top = top->next;
|
|
} else break;
|
|
|
|
received++;
|
|
arg++;
|
|
}
|
|
|
|
#undef verify_arg
|
|
|
|
if ((received < least)) {
|
|
asprintf(why,
|
|
"%s expected at least %lu arguments (%s) and received %lu",
|
|
phpdbg_command_name(command, buffer),
|
|
least,
|
|
command->args,
|
|
received);
|
|
return FAILURE;
|
|
}
|
|
}
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
/* {{{ */
|
|
PHPDBG_API const phpdbg_command_t* phpdbg_stack_resolve(const phpdbg_command_t *commands, const phpdbg_command_t *parent, phpdbg_param_t **top, char **why) {
|
|
const phpdbg_command_t *command = commands;
|
|
phpdbg_param_t *name = *top;
|
|
const phpdbg_command_t *matched[3] = {NULL, NULL, NULL};
|
|
ulong matches = 0L;
|
|
|
|
while (command && command->name && command->handler) {
|
|
if ((name->len == 1) || (command->name_len >= name->len)) {
|
|
/* match single letter alias */
|
|
if (command->alias && (name->len == 1)) {
|
|
if (command->alias == (*name->str)) {
|
|
matched[matches] = command;
|
|
matches++;
|
|
}
|
|
} else {
|
|
|
|
/* match full command name */
|
|
if (memcmp(command->name, name->str, name->len) == SUCCESS) {
|
|
if (matches < 3) {
|
|
matched[matches] = command;
|
|
matches++;
|
|
|
|
/* exact match */
|
|
if (name->len == command->name_len)
|
|
break;
|
|
} else break;
|
|
}
|
|
}
|
|
}
|
|
|
|
command++;
|
|
}
|
|
|
|
switch (matches) {
|
|
case 0: if (!parent) {
|
|
asprintf(
|
|
why,
|
|
"The command %s could not be found",
|
|
name->str);
|
|
return NULL;
|
|
} else return parent;
|
|
|
|
case 1: {
|
|
(*top) = (*top)->next;
|
|
|
|
command = matched[0];
|
|
} break;
|
|
|
|
default: {
|
|
char *list = NULL;
|
|
zend_uint it = 0;
|
|
size_t pos = 0;
|
|
|
|
while (it < matches) {
|
|
if (!list) {
|
|
list = malloc(
|
|
matched[it]->name_len + 1 +
|
|
((it+1) < matches ? sizeof(", ")-1 : 0));
|
|
} else {
|
|
list = realloc(list,
|
|
(pos + matched[it]->name_len) + 1 +
|
|
((it+1) < matches ? sizeof(", ")-1 : 0));
|
|
}
|
|
memcpy(&list[pos], matched[it]->name, matched[it]->name_len);
|
|
pos += matched[it]->name_len;
|
|
if ((it+1) < matches) {
|
|
memcpy(&list[pos], ", ", sizeof(", ")-1);
|
|
pos += (sizeof(", ") - 1);
|
|
}
|
|
|
|
list[pos] = 0;
|
|
it++;
|
|
}
|
|
|
|
asprintf(
|
|
why,
|
|
"The command %s is ambigious, matching %lu commands (%s)",
|
|
name->str, matches, list);
|
|
free(list);
|
|
} return NULL;
|
|
}
|
|
|
|
if (command->subs && (*top) && ((*top)->type == STR_PARAM)) {
|
|
return phpdbg_stack_resolve(command->subs, command, top, why);
|
|
} else {
|
|
return command;
|
|
}
|
|
|
|
return NULL;
|
|
} /* }}} */
|
|
|
|
/* {{{ */
|
|
PHPDBG_API int phpdbg_stack_execute(phpdbg_param_t *stack, char **why) {
|
|
phpdbg_param_t *command = NULL;
|
|
const phpdbg_command_t *handler = NULL;
|
|
|
|
if (stack->type != STACK_PARAM) {
|
|
asprintf(
|
|
why, "the passed argument was not a stack !!");
|
|
return FAILURE;
|
|
}
|
|
|
|
if (!stack->len) {
|
|
asprintf(
|
|
why, "the stack contains nothing !!");
|
|
return FAILURE;
|
|
}
|
|
|
|
command = (phpdbg_param_t*) stack->next;
|
|
|
|
switch (command->type) {
|
|
case EVAL_PARAM:
|
|
return PHPDBG_COMMAND_HANDLER(eval)(command TSRMLS_CC);
|
|
|
|
case SHELL_PARAM:
|
|
return PHPDBG_COMMAND_HANDLER(shell)(command TSRMLS_CC);
|
|
|
|
case STR_PARAM: {
|
|
handler = phpdbg_stack_resolve(
|
|
phpdbg_prompt_commands, NULL, &command, why);
|
|
|
|
if (handler) {
|
|
if (phpdbg_stack_verify(handler, &command, why) == SUCCESS) {
|
|
return handler->handler(command TSRMLS_CC);
|
|
}
|
|
}
|
|
} return FAILURE;
|
|
|
|
default:
|
|
asprintf(
|
|
why, "the first parameter makes no sense !!");
|
|
return FAILURE;
|
|
}
|
|
|
|
return SUCCESS;
|
|
} /* }}} */
|
|
|
|
PHPDBG_API char* phpdbg_read_input(char *buffered TSRMLS_DC) /* {{{ */
|
|
{
|
|
char *cmd = NULL;
|
|
#ifndef HAVE_LIBREADLINE
|
|
char buf[PHPDBG_MAX_CMD];
|
|
#endif
|
|
char *buffer = NULL;
|
|
|
|
if (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
|
|
if ((PHPDBG_G(flags) & PHPDBG_IS_REMOTE) &&
|
|
(buffered == NULL)) {
|
|
fflush(PHPDBG_G(io)[PHPDBG_STDOUT]);
|
|
}
|
|
|
|
if (buffered == NULL) {
|
|
disconnect:
|
|
if (0) {
|
|
PHPDBG_G(flags) |= (PHPDBG_IS_QUITTING|PHPDBG_IS_DISCONNECTED);
|
|
zend_bailout();
|
|
return NULL;
|
|
}
|
|
|
|
#ifndef HAVE_LIBREADLINE
|
|
if (!(PHPDBG_G(flags) & PHPDBG_IS_REMOTE)) {
|
|
if (!phpdbg_write("%s", phpdbg_get_prompt(TSRMLS_C))) {
|
|
goto disconnect;
|
|
}
|
|
}
|
|
|
|
/* note: EOF is ignored */
|
|
readline:
|
|
if (!fgets(buf, PHPDBG_MAX_CMD, PHPDBG_G(io)[PHPDBG_STDIN])) {
|
|
/* the user has gone away */
|
|
if ((PHPDBG_G(flags) & PHPDBG_IS_REMOTE)) {
|
|
goto disconnect;
|
|
} else goto readline;
|
|
}
|
|
|
|
cmd = buf;
|
|
#else
|
|
/* note: EOF makes readline write prompt again in local console mode */
|
|
readline:
|
|
if ((PHPDBG_G(flags) & PHPDBG_IS_REMOTE)) {
|
|
char buf[PHPDBG_MAX_CMD];
|
|
if (fgets(buf, PHPDBG_MAX_CMD, PHPDBG_G(io)[PHPDBG_STDIN])) {
|
|
cmd = buf;
|
|
} else goto disconnect;
|
|
} else cmd = readline(phpdbg_get_prompt(TSRMLS_C));
|
|
|
|
if (!cmd) {
|
|
goto readline;
|
|
}
|
|
|
|
if (!(PHPDBG_G(flags) & PHPDBG_IS_REMOTE)) {
|
|
add_history(cmd);
|
|
}
|
|
#endif
|
|
} else cmd = buffered;
|
|
|
|
buffer = estrdup(cmd);
|
|
|
|
#ifdef HAVE_LIBREADLINE
|
|
if (!buffered && cmd &&
|
|
!(PHPDBG_G(flags) & PHPDBG_IS_REMOTE)) {
|
|
free(cmd);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return buffer;
|
|
} /* }}} */
|
|
|
|
PHPDBG_API void phpdbg_destroy_input(char **input TSRMLS_DC) /*{{{ */
|
|
{
|
|
efree(*input);
|
|
} /* }}} */
|
|
|