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php-src/sapi/phpdbg/phpdbg_prompt.c
Nikita Popov 59848e3fbb Remove ZEND_ACC_INTERACTIVE and CG(interactive) 
As far as I can discern these are leftovers of the interactive
shell implementation that was used before PHP 5.4. Now the readline
ext makes use of normal eval calls for this.

So, dropping these until there is evidence to the contrary, as they
currently wouldn't work anyway.
2014-08-25 23:46:43 +02:00

1335 lines
34 KiB
C
Raw Blame History

/*
+----------------------------------------------------------------------+
| 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> |
+----------------------------------------------------------------------+
*/
#include <stdio.h>
#include <string.h>
#include "zend.h"
#include "zend_compile.h"
#include "phpdbg.h"
#include "phpdbg_help.h"
#include "phpdbg_print.h"
#include "phpdbg_info.h"
#include "phpdbg_break.h"
#include "phpdbg_bp.h"
#include "phpdbg_opcode.h"
#include "phpdbg_list.h"
#include "phpdbg_utils.h"
#include "phpdbg_prompt.h"
#include "phpdbg_cmd.h"
#include "phpdbg_set.h"
#include "phpdbg_frame.h"
#include "phpdbg_lexer.h"
#include "phpdbg_parser.h"
/* {{{ command declarations */
const phpdbg_command_t phpdbg_prompt_commands[] = {
PHPDBG_COMMAND_D(exec, "set execution context", 'e', NULL, "s"),
PHPDBG_COMMAND_D(step, "step through execution", 's', NULL, 0),
PHPDBG_COMMAND_D(continue,"continue execution", 'c', NULL, 0),
PHPDBG_COMMAND_D(run, "attempt execution", 'r', NULL, "|s"),
PHPDBG_COMMAND_D(ev, "evaluate some code", 0, NULL, "i"),
PHPDBG_COMMAND_D(until, "continue past the current line", 'u', NULL, 0),
PHPDBG_COMMAND_D(finish, "continue past the end of the stack", 'F', NULL, 0),
PHPDBG_COMMAND_D(leave, "continue until the end of the stack", 'L', NULL, 0),
PHPDBG_COMMAND_D(print, "print something", 'p', phpdbg_print_commands, 0),
PHPDBG_COMMAND_D(break, "set breakpoint", 'b', phpdbg_break_commands, "|*c"),
PHPDBG_COMMAND_D(back, "show trace", 't', NULL, "|n"),
PHPDBG_COMMAND_D(frame, "switch to a frame", 'f', NULL, "|n"),
PHPDBG_COMMAND_D(list, "lists some code", 'l', phpdbg_list_commands, "*"),
PHPDBG_COMMAND_D(info, "displays some informations", 'i', phpdbg_info_commands, "s"),
PHPDBG_COMMAND_D(clean, "clean the execution environment", 'X', NULL, 0),
PHPDBG_COMMAND_D(clear, "clear breakpoints", 'C', NULL, 0),
PHPDBG_COMMAND_D(help, "show help menu", 'h', phpdbg_help_commands, "|s"),
PHPDBG_COMMAND_D(set, "set phpdbg configuration", 'S', phpdbg_set_commands, "s"),
PHPDBG_COMMAND_D(register,"register a function", 'R', NULL, "s"),
PHPDBG_COMMAND_D(source, "execute a phpdbginit", '<', NULL, "s"),
PHPDBG_COMMAND_D(export, "export breaks to a .phpdbginit script", '>', NULL, "s"),
PHPDBG_COMMAND_D(sh, "shell a command", 0, NULL, "i"),
PHPDBG_COMMAND_D(quit, "exit phpdbg", 'q', NULL, 0),
PHPDBG_COMMAND_D(watch, "set watchpoint", 'w', phpdbg_watch_commands, "|ss"),
PHPDBG_END_COMMAND
}; /* }}} */
ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
static inline int phpdbg_call_register(phpdbg_param_t *stack TSRMLS_DC) /* {{{ */
{
phpdbg_param_t *name = NULL;
if (stack->type == STACK_PARAM) {
name = stack->next;
if (!name || name->type != STR_PARAM) {
return FAILURE;
}
if (zend_hash_exists(
&PHPDBG_G(registered), name->str, name->len+1)) {
zval fname, *fretval;
zend_fcall_info fci;
ZVAL_STRINGL(&fname, name->str, name->len, 1);
memset(&fci, 0, sizeof(zend_fcall_info));
fci.size = sizeof(zend_fcall_info);
fci.function_table = &PHPDBG_G(registered);
fci.function_name = &fname;
fci.symbol_table = EG(active_symbol_table);
fci.object_ptr = NULL;
fci.retval_ptr_ptr = &fretval;
fci.no_separation = 1;
if (name->next) {
zval params;
phpdbg_param_t *next = name->next;
array_init(&params);
while (next) {
char *buffered = NULL;
switch (next->type) {
case OP_PARAM:
case COND_PARAM:
case STR_PARAM:
add_next_index_stringl(
&params,
next->str,
next->len, 1);
break;
case NUMERIC_PARAM:
add_next_index_long(&params, next->num);
break;
case METHOD_PARAM:
spprintf(&buffered, 0, "%s::%s",
next->method.class, next->method.name);
add_next_index_string(&params, buffered, 0);
break;
case NUMERIC_METHOD_PARAM:
spprintf(&buffered, 0, "%s::%s#%ld",
next->method.class, next->method.name, next->num);
add_next_index_string(&params, buffered, 0);
break;
case NUMERIC_FUNCTION_PARAM:
spprintf(&buffered, 0, "%s#%ld",
next->str, next->num);
add_next_index_string(&params, buffered, 0);
break;
case FILE_PARAM:
spprintf(&buffered, 0, "%s:%ld",
next->file.name, next->file.line);
add_next_index_string(&params, buffered, 0);
break;
case NUMERIC_FILE_PARAM:
spprintf(&buffered, 0, "%s:#%ld",
next->file.name, next->file.line);
add_next_index_string(&params, buffered, 0);
break;
default: {
/* not yet */
}
}
next = next->next;
}
zend_fcall_info_args(&fci, &params TSRMLS_CC);
} else {
fci.params = NULL;
fci.param_count = 0;
}
phpdbg_debug(
"created %d params from arguments",
fci.param_count);
zend_call_function(&fci, NULL TSRMLS_CC);
if (fretval) {
zend_print_zval_r(
fretval, 0 TSRMLS_CC);
phpdbg_writeln(EMPTY);
}
zval_dtor(&fname);
return SUCCESS;
}
}
return FAILURE;
} /* }}} */
void phpdbg_try_file_init(char *init_file, size_t init_file_len, zend_bool free_init TSRMLS_DC) /* {{{ */
{
struct stat sb;
if (init_file && VCWD_STAT(init_file, &sb) != -1) {
FILE *fp = fopen(init_file, "r");
if (fp) {
int line = 1;
char cmd[PHPDBG_MAX_CMD];
size_t cmd_len = 0L;
char *code = NULL;
size_t code_len = 0L;
zend_bool in_code = 0;
while (fgets(cmd, PHPDBG_MAX_CMD, fp) != NULL) {
cmd_len = strlen(cmd)-1;
while (cmd_len > 0L && isspace(cmd[cmd_len-1]))
cmd_len--;
cmd[cmd_len] = '\0';
if (*cmd && cmd_len > 0L && cmd[0] != '#') {
if (cmd_len == 2) {
if (memcmp(cmd, "<:", sizeof("<:")-1) == SUCCESS) {
in_code = 1;
goto next_line;
} else {
if (memcmp(cmd, ":>", sizeof(":>")-1) == SUCCESS) {
in_code = 0;
code[code_len] = '\0';
{
zend_eval_stringl(
code, code_len, NULL, "phpdbginit code" TSRMLS_CC);
}
free(code);
code = NULL;
goto next_line;
}
}
}
if (in_code) {
if (code == NULL) {
code = malloc(cmd_len + 1);
} else code = realloc(code, code_len + cmd_len + 1);
if (code) {
memcpy(
&code[code_len], cmd, cmd_len);
code_len += cmd_len;
}
goto next_line;
}
{
char *why = NULL;
char *input = phpdbg_read_input(cmd TSRMLS_CC);
phpdbg_param_t stack;
phpdbg_init_param(&stack, STACK_PARAM);
if (phpdbg_do_parse(&stack, input TSRMLS_CC) <= 0) {
switch (phpdbg_stack_execute(&stack, &why TSRMLS_CC)) {
case FAILURE:
// if (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
if (phpdbg_call_register(&stack TSRMLS_CC) == FAILURE) {
phpdbg_error(
"Unrecognized command in %s:%d: %s, %s!",
init_file, line, input, why);
}
// }
break;
}
}
if (why) {
free(why);
why = NULL;
}
phpdbg_stack_free(&stack);
phpdbg_destroy_input(&input TSRMLS_CC);
}
}
next_line:
line++;
}
if (code) {
free(code);
}
fclose(fp);
} else {
phpdbg_error(
"Failed to open %s for initialization", init_file);
}
if (free_init) {
free(init_file);
}
}
} /* }}} */
void phpdbg_init(char *init_file, size_t init_file_len, zend_bool use_default TSRMLS_DC) /* {{{ */
{
if (!init_file && use_default) {
char *scan_dir = getenv("PHP_INI_SCAN_DIR");
int i;
phpdbg_try_file_init(PHPDBG_STRL(PHP_CONFIG_FILE_PATH "/" PHPDBG_INIT_FILENAME), 0 TSRMLS_CC);
if (!scan_dir) {
scan_dir = PHP_CONFIG_FILE_SCAN_DIR;
}
while (*scan_dir != 0) {
i = 0;
while (scan_dir[i] != ':') {
if (scan_dir[i++] == 0) {
i = -1;
break;
}
}
if (i != -1) {
scan_dir[i] = 0;
}
asprintf(
&init_file, "%s/%s", scan_dir, PHPDBG_INIT_FILENAME);
phpdbg_try_file_init(init_file, strlen(init_file), 1 TSRMLS_CC);
if (i == -1) {
break;
}
scan_dir += i + 1;
}
phpdbg_try_file_init(PHPDBG_STRL(PHPDBG_INIT_FILENAME), 0 TSRMLS_CC);
} else {
phpdbg_try_file_init(init_file, init_file_len, 1 TSRMLS_CC);
}
}
PHPDBG_COMMAND(exec) /* {{{ */
{
struct stat sb;
if (VCWD_STAT(param->str, &sb) != FAILURE) {
if (sb.st_mode & (S_IFREG|S_IFLNK)) {
char *res = phpdbg_resolve_path(param->str TSRMLS_CC);
size_t res_len = strlen(res);
if ((res_len != PHPDBG_G(exec_len)) || (memcmp(res, PHPDBG_G(exec), res_len) != SUCCESS)) {
if (PHPDBG_G(exec)) {
phpdbg_notice("Unsetting old execution context: %s", PHPDBG_G(exec));
efree(PHPDBG_G(exec));
PHPDBG_G(exec) = NULL;
PHPDBG_G(exec_len) = 0L;
}
if (PHPDBG_G(ops)) {
phpdbg_notice("Destroying compiled opcodes");
phpdbg_clean(0 TSRMLS_CC);
}
PHPDBG_G(exec) = res;
PHPDBG_G(exec_len) = res_len;
*SG(request_info).argv = PHPDBG_G(exec);
php_hash_environment(TSRMLS_C);
phpdbg_notice("Set execution context: %s", PHPDBG_G(exec));
if (phpdbg_compile(TSRMLS_C) == FAILURE) {
phpdbg_error("Failed to compile %s", PHPDBG_G(exec));
}
} else {
phpdbg_notice("Execution context not changed");
}
} else {
phpdbg_error("Cannot use %s as execution context, not a valid file or symlink", param->str);
}
} else {
phpdbg_error("Cannot stat %s, ensure the file exists", param->str);
}
return SUCCESS;
} /* }}} */
int phpdbg_compile(TSRMLS_D) /* {{{ */
{
zend_file_handle fh;
if (!PHPDBG_G(exec)) {
phpdbg_error("No execution context");
return SUCCESS;
}
if (EG(in_execution)) {
phpdbg_error("Cannot compile while in execution");
return FAILURE;
}
phpdbg_notice("Attempting compilation of %s", PHPDBG_G(exec));
if (php_stream_open_for_zend_ex(PHPDBG_G(exec), &fh,
USE_PATH|STREAM_OPEN_FOR_INCLUDE TSRMLS_CC) == SUCCESS) {
PHPDBG_G(ops) = zend_compile_file(&fh, ZEND_INCLUDE TSRMLS_CC);
zend_destroy_file_handle(&fh TSRMLS_CC);
phpdbg_notice("Success");
return SUCCESS;
} else {
phpdbg_error("Could not open file %s", PHPDBG_G(exec));
}
return FAILURE;
} /* }}} */
PHPDBG_COMMAND(step) /* {{{ */
{
if (EG(in_execution)) {
PHPDBG_G(flags) |= PHPDBG_IS_STEPPING;
}
return PHPDBG_NEXT;
} /* }}} */
PHPDBG_COMMAND(continue) /* {{{ */
{
return PHPDBG_NEXT;
} /* }}} */
PHPDBG_COMMAND(until) /* {{{ */
{
if (!EG(in_execution)) {
phpdbg_error("Not executing");
return SUCCESS;
}
PHPDBG_G(flags) |= PHPDBG_IN_UNTIL;
{
uint32_t next = 0,
self = (EG(current_execute_data)->opline - EG(active_op_array)->opcodes);
zend_op *opline = &EG(active_op_array)->opcodes[self];
for (next = self; next < EG(active_op_array)->last; next++) {
if (EG(active_op_array)->opcodes[next].lineno != opline->lineno) {
zend_hash_index_update(
&PHPDBG_G(seek),
(zend_ulong) &EG(active_op_array)->opcodes[next],
&EG(active_op_array)->opcodes[next],
sizeof(zend_op), NULL);
break;
}
}
}
return PHPDBG_UNTIL;
} /* }}} */
PHPDBG_COMMAND(finish) /* {{{ */
{
if (!EG(in_execution)) {
phpdbg_error("Not executing");
return SUCCESS;
}
PHPDBG_G(flags) |= PHPDBG_IN_FINISH;
{
uint32_t next = 0,
self = (EG(current_execute_data)->opline - EG(active_op_array)->opcodes);
for (next = self; next < EG(active_op_array)->last; next++) {
switch (EG(active_op_array)->opcodes[next].opcode) {
case ZEND_RETURN:
case ZEND_THROW:
case ZEND_EXIT:
#ifdef ZEND_YIELD
case ZEND_YIELD:
#endif
zend_hash_index_update(
&PHPDBG_G(seek),
(zend_ulong) &EG(active_op_array)->opcodes[next],
&EG(active_op_array)->opcodes[next],
sizeof(zend_op), NULL);
break;
}
}
}
return PHPDBG_FINISH;
} /* }}} */
PHPDBG_COMMAND(leave) /* {{{ */
{
if (!EG(in_execution)) {
phpdbg_error("Not executing");
return SUCCESS;
}
PHPDBG_G(flags) |= PHPDBG_IN_LEAVE;
{
uint32_t next = 0,
self = (EG(current_execute_data)->opline - EG(active_op_array)->opcodes);
for (next = self; next < EG(active_op_array)->last; next++) {
switch (EG(active_op_array)->opcodes[next].opcode) {
case ZEND_RETURN:
case ZEND_THROW:
case ZEND_EXIT:
#ifdef ZEND_YIELD
case ZEND_YIELD:
#endif
zend_hash_index_update(
&PHPDBG_G(seek),
(zend_ulong) &EG(active_op_array)->opcodes[next],
&EG(active_op_array)->opcodes[next],
sizeof(zend_op), NULL);
break;
}
}
}
return PHPDBG_LEAVE;
} /* }}} */
PHPDBG_COMMAND(frame) /* {{{ */
{
if (!param) {
phpdbg_notice("Currently in frame #%d", PHPDBG_G(frame).num);
} else phpdbg_switch_frame(param->num TSRMLS_CC);
return SUCCESS;
} /* }}} */
static inline void phpdbg_handle_exception(TSRMLS_D) /* }}} */
{
zend_fcall_info fci;
zval fname,
*trace,
exception;
/* get filename and linenumber before unsetting exception */
const char *filename = zend_get_executed_filename(TSRMLS_C);
uint32_t lineno = zend_get_executed_lineno(TSRMLS_C);
/* copy exception */
exception = *EG(exception);
zval_copy_ctor(&exception);
EG(exception) = NULL;
phpdbg_error(
"Uncaught %s!",
Z_OBJCE(exception)->name);
/* call __toString */
ZVAL_STRINGL(&fname, "__tostring", sizeof("__tostring")-1, 1);
fci.size = sizeof(fci);
fci.function_table = &Z_OBJCE(exception)->function_table;
fci.function_name = &fname;
fci.symbol_table = NULL;
fci.object_ptr = &exception;
fci.retval_ptr_ptr = &trace;
fci.param_count = 0;
fci.params = NULL;
fci.no_separation = 1;
zend_call_function(&fci, NULL TSRMLS_CC);
if (trace) {
phpdbg_writeln(
"Uncaught %s", Z_STRVAL_P(trace));
/* remember to dtor trace */
zval_ptr_dtor(&trace);
}
/* output useful information about address */
phpdbg_writeln(
"Stacked entered at %p in %s on line %u",
EG(active_op_array)->opcodes, filename, lineno);
zval_dtor(&fname);
zval_dtor(&exception);
} /* }}} */
PHPDBG_COMMAND(run) /* {{{ */
{
if (EG(in_execution)) {
phpdbg_error("Cannot start another execution while one is in progress");
return SUCCESS;
}
if (PHPDBG_G(ops) || PHPDBG_G(exec)) {
zend_op **orig_opline = EG(opline_ptr);
zend_op_array *orig_op_array = EG(active_op_array);
zval **orig_retval_ptr = EG(return_value_ptr_ptr);
zend_bool restore = 1;
zend_execute_data *ex = EG(current_execute_data);
if (!PHPDBG_G(ops)) {
if (phpdbg_compile(TSRMLS_C) == FAILURE) {
phpdbg_error("Failed to compile %s, cannot run", PHPDBG_G(exec));
goto out;
}
}
EG(active_op_array) = PHPDBG_G(ops);
EG(return_value_ptr_ptr) = &PHPDBG_G(retval);
if (!EG(active_symbol_table)) {
zend_rebuild_symbol_table(TSRMLS_C);
}
/* clean up from last execution */
if (ex && ex->symbol_table) {
zend_hash_clean(ex->symbol_table);
}
/* clean seek state */
PHPDBG_G(flags) &= ~PHPDBG_SEEK_MASK;
zend_hash_clean(
&PHPDBG_G(seek));
/* reset hit counters */
phpdbg_reset_breakpoints(TSRMLS_C);
if (param && param->type != EMPTY_PARAM && param->len != 0) {
char **argv = emalloc(5 * sizeof(char *));
int argc = 0;
int i;
char *argv_str = strtok(param->str, " ");
while (argv_str) {
if (argc >= 4 && argc == (argc & -argc)) {
argv = erealloc(argv, (argc * 2 + 1) * sizeof(char *));
}
argv[++argc] = argv_str;
argv_str = strtok(0, " ");
argv[argc] = estrdup(argv[argc]);
}
argv[0] = SG(request_info).argv[0];
for (i = SG(request_info).argc; --i;) {
efree(SG(request_info).argv[i]);
}
efree(SG(request_info).argv);
SG(request_info).argv = erealloc(argv, ++argc * sizeof(char *));
SG(request_info).argc = argc;
php_hash_environment(TSRMLS_C);
}
zend_try {
php_output_activate(TSRMLS_C);
PHPDBG_G(flags) ^= PHPDBG_IS_INTERACTIVE;
zend_execute(EG(active_op_array) TSRMLS_CC);
PHPDBG_G(flags) ^= PHPDBG_IS_INTERACTIVE;
php_output_deactivate(TSRMLS_C);
} zend_catch {
EG(active_op_array) = orig_op_array;
EG(opline_ptr) = orig_opline;
EG(return_value_ptr_ptr) = orig_retval_ptr;
if (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
phpdbg_error("Caught exit/error from VM");
restore = 0;
}
} zend_end_try();
if (restore) {
if (EG(exception)) {
phpdbg_handle_exception(TSRMLS_C);
}
EG(active_op_array) = orig_op_array;
EG(opline_ptr) = orig_opline;
EG(return_value_ptr_ptr) = orig_retval_ptr;
}
} else {
phpdbg_error("Nothing to execute!");
}
out:
PHPDBG_FRAME(num) = 0;
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(ev) /* {{{ */
{
zend_bool stepping = ((PHPDBG_G(flags) & PHPDBG_IS_STEPPING)==PHPDBG_IS_STEPPING);
zval retval;
if (!(PHPDBG_G(flags) & PHPDBG_IS_STEPONEVAL)) {
PHPDBG_G(flags) &= ~ PHPDBG_IS_STEPPING;
}
/* disable stepping while eval() in progress */
PHPDBG_G(flags) |= PHPDBG_IN_EVAL;
zend_try {
if (zend_eval_stringl(param->str, param->len,
&retval, "eval()'d code" TSRMLS_CC) == SUCCESS) {
zend_print_zval_r(
&retval, 0 TSRMLS_CC);
phpdbg_writeln(EMPTY);
zval_dtor(&retval);
}
} zend_end_try();
PHPDBG_G(flags) &= ~PHPDBG_IN_EVAL;
/* switch stepping back on */
if (stepping &&
!(PHPDBG_G(flags) & PHPDBG_IS_STEPONEVAL)) {
PHPDBG_G(flags) |= PHPDBG_IS_STEPPING;
}
CG(unclean_shutdown) = 0;
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(back) /* {{{ */
{
if (!EG(in_execution)) {
phpdbg_error("Not executing!");
return SUCCESS;
}
if (!param) {
phpdbg_dump_backtrace(0 TSRMLS_CC);
} else {
phpdbg_dump_backtrace(param->num TSRMLS_CC);
}
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(print) /* {{{ */
{
phpdbg_writeln(SEPARATE);
phpdbg_notice("Execution Context Information");
#ifdef HAVE_LIBREADLINE
phpdbg_writeln("Readline\tyes");
#else
phpdbg_writeln("Readline\tno");
#endif
#ifdef HAVE_LIBEDIT
phpdbg_writeln("Libedit\t\tyes");
#else
phpdbg_writeln("Libedit\t\tno");
#endif
phpdbg_writeln("Exec\t\t%s", PHPDBG_G(exec) ? PHPDBG_G(exec) : "none");
phpdbg_writeln("Compiled\t%s", PHPDBG_G(ops) ? "yes" : "no");
phpdbg_writeln("Stepping\t%s", (PHPDBG_G(flags) & PHPDBG_IS_STEPPING) ? "on" : "off");
phpdbg_writeln("Quietness\t%s", (PHPDBG_G(flags) & PHPDBG_IS_QUIET) ? "on" : "off");
phpdbg_writeln("Oplog\t\t%s", PHPDBG_G(oplog) ? "on" : "off");
if (PHPDBG_G(ops)) {
phpdbg_writeln("Opcodes\t\t%d", PHPDBG_G(ops)->last);
if (PHPDBG_G(ops)->last_var) {
phpdbg_writeln("Variables\t%d", PHPDBG_G(ops)->last_var-1);
} else {
phpdbg_writeln("Variables\tNone");
}
}
phpdbg_writeln("Executing\t%s", EG(in_execution) ? "yes" : "no");
if (EG(in_execution)) {
phpdbg_writeln("VM Return\t%d", PHPDBG_G(vmret));
}
phpdbg_writeln("Classes\t\t%d", zend_hash_num_elements(EG(class_table)));
phpdbg_writeln("Functions\t%d", zend_hash_num_elements(EG(function_table)));
phpdbg_writeln("Constants\t%d", zend_hash_num_elements(EG(zend_constants)));
phpdbg_writeln("Included\t%d", zend_hash_num_elements(&EG(included_files)));
phpdbg_writeln(SEPARATE);
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(info) /* {{{ */
{
phpdbg_error(
"No information command selected!");
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(set) /* {{{ */
{
phpdbg_error(
"No set command selected!");
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(break) /* {{{ */
{
if (!param) {
phpdbg_set_breakpoint_file(
zend_get_executed_filename(TSRMLS_C),
zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
} else switch (param->type) {
case ADDR_PARAM:
phpdbg_set_breakpoint_opline(param->addr TSRMLS_CC);
break;
case NUMERIC_PARAM:
if (PHPDBG_G(exec)) {
phpdbg_set_breakpoint_file(phpdbg_current_file(TSRMLS_C), param->num TSRMLS_CC);
} else {
phpdbg_error("Execution context not set!");
}
break;
case METHOD_PARAM:
phpdbg_set_breakpoint_method(param->method.class, param->method.name TSRMLS_CC);
break;
case NUMERIC_METHOD_PARAM:
phpdbg_set_breakpoint_method_opline(param->method.class, param->method.name, param->num TSRMLS_CC);
break;
case NUMERIC_FUNCTION_PARAM:
phpdbg_set_breakpoint_function_opline(param->str, param->num TSRMLS_CC);
break;
case FILE_PARAM:
phpdbg_set_breakpoint_file(param->file.name, param->file.line TSRMLS_CC);
break;
case NUMERIC_FILE_PARAM:
phpdbg_set_breakpoint_file_opline(param->file.name, param->file.line TSRMLS_CC);
break;
case COND_PARAM:
phpdbg_set_breakpoint_expression(param->str, param->len TSRMLS_CC);
break;
case STR_PARAM:
phpdbg_set_breakpoint_symbol(param->str, param->len TSRMLS_CC);
break;
case OP_PARAM:
phpdbg_set_breakpoint_opcode(param->str, param->len TSRMLS_CC);
break;
phpdbg_default_switch_case();
}
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(sh) /* {{{ */
{
FILE *fd = NULL;
if ((fd=VCWD_POPEN((char*)param->str, "w"))) {
/* do something perhaps ?? do we want input ?? */
fclose(fd);
} else {
phpdbg_error(
"Failed to execute %s", param->str);
}
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(source) /* {{{ */
{
struct stat sb;
if (VCWD_STAT(param->str, &sb) != -1) {
phpdbg_try_file_init(param->str, param->len, 0 TSRMLS_CC);
} else {
phpdbg_error(
"Failed to stat %s, file does not exist", param->str);
}
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(export) /* {{{ */
{
FILE *handle = VCWD_FOPEN(param->str, "w+");
if (handle) {
phpdbg_export_breakpoints(handle TSRMLS_CC);
fclose(handle);
} else {
phpdbg_error(
"Failed to open or create %s, check path and permissions", param->str);
}
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(register) /* {{{ */
{
zend_function *function;
char *lcname = zend_str_tolower_dup(param->str, param->len);
size_t lcname_len = strlen(lcname);
if (!zend_hash_exists(&PHPDBG_G(registered), lcname, lcname_len+1)) {
if (zend_hash_find(EG(function_table), lcname, lcname_len+1, (void**) &function) == SUCCESS) {
zend_hash_update(
&PHPDBG_G(registered), lcname, lcname_len+1, (void*)&function, sizeof(zend_function), NULL);
function_add_ref(function);
phpdbg_notice(
"Registered %s", lcname);
} else {
phpdbg_error("The requested function (%s) could not be found", param->str);
}
} else {
phpdbg_error(
"The requested name (%s) is already in use", lcname);
}
efree(lcname);
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(quit) /* {{{ */
{
/* don't allow this to loop, ever ... */
if (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
PHPDBG_G(flags) |= PHPDBG_IS_QUITTING;
zend_bailout();
}
return PHPDBG_NEXT;
} /* }}} */
PHPDBG_COMMAND(clean) /* {{{ */
{
if (EG(in_execution)) {
phpdbg_error("Cannot clean environment while executing");
return SUCCESS;
}
phpdbg_notice("Cleaning Execution Environment");
phpdbg_writeln("Classes\t\t\t%d", zend_hash_num_elements(EG(class_table)));
phpdbg_writeln("Functions\t\t%d", zend_hash_num_elements(EG(function_table)));
phpdbg_writeln("Constants\t\t%d", zend_hash_num_elements(EG(zend_constants)));
phpdbg_writeln("Includes\t\t%d", zend_hash_num_elements(&EG(included_files)));
phpdbg_clean(1 TSRMLS_CC);
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(clear) /* {{{ */
{
phpdbg_notice("Clearing Breakpoints");
phpdbg_writeln("File\t\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE]));
phpdbg_writeln("Functions\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM]));
phpdbg_writeln("Methods\t\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD]));
phpdbg_writeln("Oplines\t\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]));
phpdbg_writeln("File oplines\t\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE]));
phpdbg_writeln("Function oplines\t\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE]));
phpdbg_writeln("Method oplines\t\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE]));
phpdbg_writeln("Conditionals\t\t%d", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_COND]));
phpdbg_clear_breakpoints(TSRMLS_C);
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(list) /* {{{ */
{
if (!param) {
return PHPDBG_LIST_HANDLER(lines)(PHPDBG_COMMAND_ARGS);
} else switch (param->type) {
case NUMERIC_PARAM:
return PHPDBG_LIST_HANDLER(lines)(PHPDBG_COMMAND_ARGS);
case FILE_PARAM:
return PHPDBG_LIST_HANDLER(lines)(PHPDBG_COMMAND_ARGS);
case STR_PARAM:
phpdbg_list_function_byname(param->str, param->len TSRMLS_CC);
break;
case METHOD_PARAM:
return PHPDBG_LIST_HANDLER(method)(PHPDBG_COMMAND_ARGS);
phpdbg_default_switch_case();
}
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(watch) /* {{{ */
{
if (!param || param->type == EMPTY_PARAM) {
phpdbg_list_watchpoints(TSRMLS_C);
} else switch (param->type) {
case STR_PARAM:
if (phpdbg_create_var_watchpoint(param->str, param->len TSRMLS_CC) != FAILURE) {
phpdbg_notice("Set watchpoint on %.*s", (int)param->len, param->str);
}
break;
phpdbg_default_switch_case();
}
return SUCCESS;
} /* }}} */
int phpdbg_interactive(TSRMLS_D) /* {{{ */
{
int ret = SUCCESS;
char *why = NULL;
char *input = NULL;
phpdbg_param_t stack;
PHPDBG_G(flags) |= PHPDBG_IS_INTERACTIVE;
input = phpdbg_read_input(NULL TSRMLS_CC);
if (input) {
do {
phpdbg_init_param(&stack, STACK_PARAM);
if (phpdbg_do_parse(&stack, input TSRMLS_CC) <= 0) {
switch (ret = phpdbg_stack_execute(&stack, &why TSRMLS_CC)) {
case FAILURE:
if (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
if (phpdbg_call_register(&stack TSRMLS_CC) == FAILURE) {
if (why) {
phpdbg_error("%s", why);
}
}
}
if (why) {
free(why);
why = NULL;
}
break;
case PHPDBG_LEAVE:
case PHPDBG_FINISH:
case PHPDBG_UNTIL:
case PHPDBG_NEXT: {
if (!EG(in_execution) && !(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)) {
phpdbg_error("Not running");
}
goto out;
}
}
}
if (why) {
free(why);
why = NULL;
}
phpdbg_stack_free(&stack);
phpdbg_destroy_input(&input TSRMLS_CC);
} while ((input = phpdbg_read_input(NULL TSRMLS_CC)));
}
out:
if (input) {
phpdbg_stack_free(&stack);
phpdbg_destroy_input(&input TSRMLS_CC);
}
if (why) {
free(why);
}
if (EG(in_execution)) {
phpdbg_restore_frame(TSRMLS_C);
}
PHPDBG_G(flags) &= ~PHPDBG_IS_INTERACTIVE;
phpdbg_print_changed_zvals(TSRMLS_C);
return ret;
} /* }}} */
void phpdbg_clean(zend_bool full TSRMLS_DC) /* {{{ */
{
/* this is implicitly required */
if (PHPDBG_G(ops)) {
destroy_op_array(PHPDBG_G(ops) TSRMLS_CC);
efree(PHPDBG_G(ops));
PHPDBG_G(ops) = NULL;
}
if (full) {
PHPDBG_G(flags) |= PHPDBG_IS_CLEANING;
zend_bailout();
}
} /* }}} */
static inline zend_execute_data *phpdbg_create_execute_data(zend_op_array *op_array, zend_bool nested TSRMLS_DC) /* {{{ */
{
#if PHP_VERSION_ID >= 50500
return zend_create_execute_data_from_op_array(op_array, nested TSRMLS_CC);
#else
#undef EX
#define EX(element) execute_data->element
#undef EX_CV
#define EX_CV(var) EX(CVs)[var]
#undef EX_CVs
#define EX_CVs() EX(CVs)
#undef EX_T
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
#undef EX_Ts
#define EX_Ts() EX(Ts)
zend_execute_data *execute_data = (zend_execute_data *)zend_vm_stack_alloc(
ZEND_MM_ALIGNED_SIZE(sizeof(zend_execute_data)) +
ZEND_MM_ALIGNED_SIZE(sizeof(zval**) * op_array->last_var * (EG(active_symbol_table) ? 1 : 2)) +
ZEND_MM_ALIGNED_SIZE(sizeof(temp_variable)) * op_array->T TSRMLS_CC);
EX(CVs) = (zval***)((char*)execute_data + ZEND_MM_ALIGNED_SIZE(sizeof(zend_execute_data)));
memset(EX(CVs), 0, sizeof(zval**) * op_array->last_var);
EX(Ts) = (temp_variable *)(((char*)EX(CVs)) + ZEND_MM_ALIGNED_SIZE(sizeof(zval**) * op_array->last_var * (EG(active_symbol_table) ? 1 : 2)));
EX(fbc) = NULL;
EX(called_scope) = NULL;
EX(object) = NULL;
EX(old_error_reporting) = NULL;
EX(op_array) = op_array;
EX(symbol_table) = EG(active_symbol_table);
EX(prev_execute_data) = EG(current_execute_data);
EG(current_execute_data) = execute_data;
EX(nested) = nested;
if (!op_array->run_time_cache && op_array->last_cache_slot) {
op_array->run_time_cache = ecalloc(op_array->last_cache_slot, sizeof(void*));
}
if (op_array->this_var != -1 && EG(This)) {
Z_ADDREF_P(EG(This)); /* For $this pointer */
if (!EG(active_symbol_table)) {
EX_CV(op_array->this_var) = (zval**)EX_CVs() + (op_array->last_var + op_array->this_var);
*EX_CV(op_array->this_var) = EG(This);
} else {
if (zend_hash_add(EG(active_symbol_table), "this", sizeof("this"), &EG(This), sizeof(zval *), (void**)&EX_CV(op_array->this_var))==FAILURE) {
Z_DELREF_P(EG(This));
}
}
}
EX(opline) = op_array->opcodes;
EG(opline_ptr) = &EX(opline);
EX(function_state).function = (zend_function *) op_array;
EX(function_state).arguments = NULL;
return execute_data;
#endif
} /* }}} */
#if PHP_VERSION_ID >= 50500
void phpdbg_execute_ex(zend_execute_data *execute_data TSRMLS_DC) /* {{{ */
{
#else
void phpdbg_execute_ex(zend_op_array *op_array TSRMLS_DC) /* {{{ */
{
long long flags = 0;
zend_ulong address = 0L;
zend_execute_data *execute_data;
zend_bool nested = 0;
#endif
zend_bool original_in_execution = EG(in_execution);
HashTable vars;
#if PHP_VERSION_ID < 50500
if (EG(exception)) {
return;
}
#endif
EG(in_execution) = 1;
#if PHP_VERSION_ID >= 50500
if (0) {
zend_vm_enter:
execute_data = phpdbg_create_execute_data(EG(active_op_array), 1 TSRMLS_CC);
}
zend_hash_init(&vars, EG(active_op_array)->last, NULL, NULL, 0);
#else
zend_vm_enter:
execute_data = phpdbg_create_execute_data(op_array, nested TSRMLS_CC);
nested = 1;
zend_hash_init(&vars, EG(active_op_array)->last, NULL, NULL, 0);
#endif
while (1) {
if ((PHPDBG_G(flags) & PHPDBG_BP_RESOLVE_MASK)) {
/* resolve nth opline breakpoints */
phpdbg_resolve_op_array_breaks(EG(active_op_array) TSRMLS_CC);
}
#ifdef ZEND_WIN32
if (EG(timed_out)) {
zend_timeout(0);
}
#endif
#define DO_INTERACTIVE() do { \
if (!(PHPDBG_G(flags) & PHPDBG_IN_EVAL)) { \
phpdbg_list_file( \
zend_get_executed_filename(TSRMLS_C), \
3, \
zend_get_executed_lineno(TSRMLS_C)-1, \
zend_get_executed_lineno(TSRMLS_C) \
TSRMLS_CC \
); \
} \
\
/* do { */\
switch (phpdbg_interactive(TSRMLS_C)) { \
case PHPDBG_LEAVE: \
case PHPDBG_FINISH: \
case PHPDBG_UNTIL: \
case PHPDBG_NEXT:{ \
goto next; \
} \
} \
/* } while (!(PHPDBG_G(flags) & PHPDBG_IS_QUITTING)); */\
} while (0)
/* allow conditional breakpoints and
initialization to access the vm uninterrupted */
if ((PHPDBG_G(flags) & PHPDBG_IN_COND_BP) ||
(PHPDBG_G(flags) & PHPDBG_IS_INITIALIZING)) {
/* skip possible breakpoints */
goto next;
}
/* perform seek operation */
if (PHPDBG_G(flags) & PHPDBG_SEEK_MASK) {
/* current address */
zend_ulong address = (zend_ulong) execute_data->opline;
/* run to next line */
if (PHPDBG_G(flags) & PHPDBG_IN_UNTIL) {
if (zend_hash_index_exists(&PHPDBG_G(seek), address)) {
PHPDBG_G(flags) &= ~PHPDBG_IN_UNTIL;
zend_hash_clean(
&PHPDBG_G(seek));
} else {
/* skip possible breakpoints */
goto next;
}
}
/* run to finish */
if (PHPDBG_G(flags) & PHPDBG_IN_FINISH) {
if (zend_hash_index_exists(&PHPDBG_G(seek), address)) {
PHPDBG_G(flags) &= ~PHPDBG_IN_FINISH;
zend_hash_clean(
&PHPDBG_G(seek));
}
/* skip possible breakpoints */
goto next;
}
/* break for leave */
if (PHPDBG_G(flags) & PHPDBG_IN_LEAVE) {
if (zend_hash_index_exists(&PHPDBG_G(seek), address)) {
PHPDBG_G(flags) &= ~PHPDBG_IN_LEAVE;
zend_hash_clean(
&PHPDBG_G(seek));
phpdbg_notice(
"Breaking for leave at %s:%u",
zend_get_executed_filename(TSRMLS_C),
zend_get_executed_lineno(TSRMLS_C)
);
DO_INTERACTIVE();
} else {
/* skip possible breakpoints */
goto next;
}
}
}
/* not while in conditionals */
phpdbg_print_opline_ex(
execute_data, &vars, 0 TSRMLS_CC);
if (PHPDBG_G(flags) & PHPDBG_IS_STEPPING && (PHPDBG_G(flags) & PHPDBG_STEP_OPCODE || execute_data->opline->lineno != PHPDBG_G(last_line))) {
PHPDBG_G(flags) &= ~PHPDBG_IS_STEPPING;
DO_INTERACTIVE();
}
/* check if some watchpoint was hit */
{
if (phpdbg_print_changed_zvals(TSRMLS_C) == SUCCESS) {
DO_INTERACTIVE();
}
}
/* search for breakpoints */
{
phpdbg_breakbase_t *brake;
if ((PHPDBG_G(flags) & PHPDBG_BP_MASK)
&& (brake = phpdbg_find_breakpoint(execute_data TSRMLS_CC))
&& (brake->type != PHPDBG_BREAK_FILE || execute_data->opline->lineno != PHPDBG_G(last_line))) {
phpdbg_hit_breakpoint(brake, 1 TSRMLS_CC);
DO_INTERACTIVE();
}
}
next:
if (PHPDBG_G(flags) & PHPDBG_IS_SIGNALED) {
phpdbg_writeln(EMPTY);
phpdbg_notice("Program received signal SIGINT");
PHPDBG_G(flags) &= ~PHPDBG_IS_SIGNALED;
DO_INTERACTIVE();
}
PHPDBG_G(last_line) = execute_data->opline->lineno;
PHPDBG_G(vmret) = execute_data->opline->handler(execute_data TSRMLS_CC);
if (PHPDBG_G(vmret) > 0) {
switch (PHPDBG_G(vmret)) {
case 1:
EG(in_execution) = original_in_execution;
zend_hash_destroy(&vars);
return;
case 2:
#if PHP_VERSION_ID < 50500
op_array = EG(active_op_array);
#endif
zend_hash_destroy(&vars);
goto zend_vm_enter;
break;
case 3:
execute_data = EG(current_execute_data);
break;
default:
break;
}
}
}
zend_error_noreturn(E_ERROR, "Arrived at end of main loop which shouldn't happen");
} /* }}} */
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