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phpdbg_prompt.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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Felipe Pena <[email protected]> |
| Authors: Joe Watkins <[email protected]> |
| Authors: Bob Weinand <[email protected]> |
+----------------------------------------------------------------------+
*/
#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_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"
#include "phpdbg_wait.h"
#include "phpdbg_eol.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
extern int phpdbg_startup_run;
#if PHP_VERSION_ID < 50600
ZEND_EXTERN_MODULE_GLOBALS(output);
#endif
#ifdef HAVE_LIBDL
#ifdef PHP_WIN32
#include "win32/param.h"
#include "win32/winutil.h"
#define GET_DL_ERROR() php_win_err()
#elif defined(NETWARE)
#include <sys/param.h>
#define GET_DL_ERROR() dlerror()
#else
#include <sys/param.h>
#define GET_DL_ERROR() DL_ERROR()
#endif
#endif
/* {{{ command declarations */
const phpdbg_command_t phpdbg_prompt_commands[] = {
PHPDBG_COMMAND_D(exec, "set execution context", 'e', NULL, "s", 0),
PHPDBG_COMMAND_D(step, "step through execution", 's', NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(continue,"continue execution", 'c', NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(run, "attempt execution", 'r', NULL, "|s", 0),
PHPDBG_COMMAND_D(ev, "evaluate some code", 0 , NULL, "i", PHPDBG_ASYNC_SAFE), /* restricted ASYNC_SAFE */
PHPDBG_COMMAND_D(until, "continue past the current line", 'u', NULL, 0, 0),
PHPDBG_COMMAND_D(finish, "continue past the end of the stack", 'F', NULL, 0, 0),
PHPDBG_COMMAND_D(leave, "continue until the end of the stack", 'L', NULL, 0, 0),
PHPDBG_COMMAND_D(print, "print something", 'p', phpdbg_print_commands, 0, 0),
PHPDBG_COMMAND_D(break, "set breakpoint", 'b', phpdbg_break_commands, "|*c", 0),
PHPDBG_COMMAND_D(back, "show trace", 't', NULL, "|n", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(frame, "switch to a frame", 'f', NULL, "|n", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(list, "lists some code", 'l', phpdbg_list_commands, "*", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(info, "displays some informations", 'i', phpdbg_info_commands, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(clean, "clean the execution environment", 'X', NULL, 0, 0),
PHPDBG_COMMAND_D(clear, "clear breakpoints", 'C', NULL, 0, 0),
PHPDBG_COMMAND_D(help, "show help menu", 'h', phpdbg_help_commands, "|s", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(set, "set phpdbg configuration", 'S', phpdbg_set_commands, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(register,"register a function", 'R', NULL, "s", 0),
PHPDBG_COMMAND_D(source, "execute a phpdbginit", '<', NULL, "s", 0),
PHPDBG_COMMAND_D(export, "export breaks to a .phpdbginit script", '>', NULL, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(sh, "shell a command", 0 , NULL, "i", 0),
PHPDBG_COMMAND_D(quit, "exit phpdbg", 'q', NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_COMMAND_D(wait, "wait for other process", 'W', NULL, 0, 0),
PHPDBG_COMMAND_D(watch, "set watchpoint", 'w', phpdbg_watch_commands, "|ss", 0),
PHPDBG_COMMAND_D(eol, "set EOL", 'E', NULL, "|s", 0),
PHPDBG_END_COMMAND
}; /* }}} */
static inline int phpdbg_call_register(phpdbg_param_t *stack TSRMLS_DC) /* {{{ */
{
phpdbg_param_t *name = NULL;
if (stack->type == STACK_PARAM) {
char *lc_name;
name = stack->next;
if (!name || name->type != STR_PARAM) {
return FAILURE;
}
lc_name = zend_str_tolower_dup(name->str, name->len);
if (zend_hash_exists(&PHPDBG_G(registered), lc_name, name->len+1)) {
zval fname, *fretval;
zend_fcall_info fci;
ZVAL_STRINGL(&fname, lc_name, 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(¶ms);
while (next) {
char *buffered = NULL;
switch (next->type) {
case OP_PARAM:
case COND_PARAM:
case STR_PARAM:
add_next_index_stringl(¶ms, next->str, next->len, 1);
break;
case NUMERIC_PARAM:
add_next_index_long(¶ms, next->num);
break;
case METHOD_PARAM:
spprintf(&buffered, 0, "%s::%s",
next->method.class, next->method.name);
add_next_index_string(¶ms, 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(¶ms, buffered, 0);
break;
case NUMERIC_FUNCTION_PARAM:
spprintf(&buffered, 0, "%s#%ld",
next->str, next->num);
add_next_index_string(¶ms, buffered, 0);
break;
case FILE_PARAM:
spprintf(&buffered, 0, "%s:%ld",
next->file.name, next->file.line);
add_next_index_string(¶ms, buffered, 0);
break;
case NUMERIC_FILE_PARAM:
spprintf(&buffered, 0, "%s:#%ld",
next->file.name, next->file.line);
add_next_index_string(¶ms, buffered, 0);
break;
default: {
/* not yet */
}
}
next = next->next;
}
zend_fcall_info_args(&fci, ¶ms TSRMLS_CC);
} else {
fci.params = NULL;
fci.param_count = 0;
}
phpdbg_activate_err_buf(0 TSRMLS_CC);
phpdbg_free_err_buf(TSRMLS_C);
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_out("\n");
}
zval_dtor(&fname);
efree(lc_name);
return SUCCESS;
}
efree(lc_name);
}
return FAILURE;
} /* }}} */
struct phpdbg_init_state {
int line;
zend_bool in_code;
char *code;
size_t code_len;
const char *init_file;
};
static void phpdbg_line_init(char *cmd, struct phpdbg_init_state *state TSRMLS_DC) {
size_t cmd_len = strlen(cmd);
state->line++;
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) {
state->in_code = 1;
return;
} else {
if (memcmp(cmd, ":>", sizeof(":>")-1) == SUCCESS) {
state->in_code = 0;
state->code[state->code_len] = '\0';
zend_eval_stringl(state->code, state->code_len, NULL, "phpdbginit code" TSRMLS_CC);
free(state->code);
state->code = NULL;
return;
}
}
}
if (state->in_code) {
if (state->code == NULL) {
state->code = malloc(cmd_len + 1);
} else {
state->code = realloc(state->code, state->code_len + cmd_len + 1);
}
if (state->code) {
memcpy(&state->code[state->code_len], cmd, cmd_len);
state->code_len += cmd_len;
}
return;
}
zend_try {
char *input = phpdbg_read_input(cmd TSRMLS_CC);
phpdbg_param_t stack;
phpdbg_init_param(&stack, STACK_PARAM);
phpdbg_activate_err_buf(1 TSRMLS_CC);
if (phpdbg_do_parse(&stack, input TSRMLS_CC) <= 0) {
switch (phpdbg_stack_execute(&stack, 1 /* allow_async_unsafe == 1 */ TSRMLS_CC)) {
case FAILURE:
phpdbg_activate_err_buf(0 TSRMLS_CC);
if (phpdbg_call_register(&stack TSRMLS_CC) == FAILURE) {
if (state->init_file) {
phpdbg_output_err_buf("initfailure", "%b file=\"%s\" line=\"%d\" input=\"%s\"", "Unrecognized command in %s:%d: %s, %b!" TSRMLS_CC, state->init_file, state->line, input);
} else {
phpdbg_output_err_buf("initfailure", "%b line=\"%d\" input=\"%s\"", "Unrecognized command on line %d: %s, %b!" TSRMLS_CC, state->line, input);
}
}
break;
}
}
phpdbg_activate_err_buf(0 TSRMLS_CC);
phpdbg_free_err_buf(TSRMLS_C);
phpdbg_stack_free(&stack);
phpdbg_destroy_input(&input TSRMLS_CC);
} zend_catch {
PHPDBG_G(flags) &= ~(PHPDBG_IS_RUNNING | PHPDBG_IS_CLEANING);
if (PHPDBG_G(flags) & PHPDBG_IS_QUITTING) {
zend_bailout();
}
} zend_end_try();
}
}
void phpdbg_string_init(char *buffer TSRMLS_DC) {
struct phpdbg_init_state state = {0};
char *str = strtok(buffer, "\n");
while (str) {
phpdbg_line_init(str, &state TSRMLS_CC);
str = strtok(NULL, "\n");
}
if (state.code) {
free(state.code);
}
}
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) {
char cmd[PHPDBG_MAX_CMD];
struct phpdbg_init_state state = {0};
state.init_file = init_file;
while (fgets(cmd, PHPDBG_MAX_CMD, fp) != NULL) {
phpdbg_line_init(cmd, &state TSRMLS_CC);
}
if (state.code) {
free(state.code);
}
fclose(fp);
} else {
phpdbg_error("initfailure", "type=\"openfile\" file=\"%s\"", "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 (EG(in_execution)) {
if (phpdbg_ask_user_permission("Do you really want to stop execution to set a new execution context?" TSRMLS_CC) == FAILURE) {
return FAILURE;
}
}
if (PHPDBG_G(exec)) {
phpdbg_notice("exec", "type=\"unset\" context=\"%s\"", "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("exec", "type=\"unsetops\"", "Destroying compiled opcodes");
phpdbg_clean(0 TSRMLS_CC);
}
PHPDBG_G(exec) = res;
PHPDBG_G(exec_len) = res_len;
VCWD_CHDIR_FILE(res);
*SG(request_info).argv = PHPDBG_G(exec);
php_hash_environment(TSRMLS_C);
phpdbg_notice("exec", "type=\"set\" context=\"%s\"", "Set execution context: %s", PHPDBG_G(exec));
if (EG(in_execution)) {
phpdbg_clean(1 TSRMLS_CC);
}
phpdbg_compile(TSRMLS_C);
} else {
phpdbg_notice("exec", "type=\"unchanged\"", "Execution context not changed");
}
} else {
phpdbg_error("exec", "type=\"invalid\" context=\"%s\"", "Cannot use %s as execution context, not a valid file or symlink", param->str);
}
} else {
phpdbg_error("exec", "type=\"notfound\" context=\"%s\"", "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("inactive", "type=\"nocontext\"", "No execution context");
return FAILURE;
}
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("compile", "context=\"%s\"", "Successful compilation of %s", PHPDBG_G(exec));
return SUCCESS;
} else {
phpdbg_error("compile", "type=\"openfailure\" context=\"%s\"", "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("inactive", "type=\"noexec\"", "Not executing");
return SUCCESS;
}
PHPDBG_G(flags) |= PHPDBG_IN_UNTIL;
{
zend_uint 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("inactive", "type=\"noexec\"", "Not executing");
return SUCCESS;
}
PHPDBG_G(flags) |= PHPDBG_IN_FINISH;
{
zend_uint 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("inactive", "type=\"noexec\"", "Not executing");
return SUCCESS;
}
PHPDBG_G(flags) |= PHPDBG_IN_LEAVE;
{
zend_uint 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("frame", "id=\"%d\"", "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);
zend_uint lineno = zend_get_executed_lineno(TSRMLS_C);
/* copy exception */
exception = *EG(exception);
zval_copy_ctor(&exception);
EG(exception) = NULL;
/* 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("exception", "name=\"%s\" trace=\"%.*s\"", "Uncaught %s!\n%.*s", Z_OBJCE(exception)->name, Z_STRLEN_P(trace), Z_STRVAL_P(trace));
zval_ptr_dtor(&trace);
} else {
phpdbg_error("exception", "name=\"%s\"", "Uncaught %s!", Z_OBJCE(exception)->name);
}
/* output useful information about address */
phpdbg_writeln("exception", "opline=\"%p\" file=\"%s\" line=\"%u\"", "Stack 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 (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 (EG(in_execution)) {
if (phpdbg_ask_user_permission("Do you really want to restart execution?" TSRMLS_CC) == SUCCESS) {
phpdbg_startup_run++;
phpdbg_clean(1 TSRMLS_CC);
}
return SUCCESS;
}
if (!PHPDBG_G(ops)) {
if (phpdbg_compile(TSRMLS_C) == FAILURE) {
phpdbg_error("compile", "type=\"compilefailure\" context=\"%s\"", "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 {
PHPDBG_G(flags) &= ~PHPDBG_IS_INTERACTIVE;
PHPDBG_G(flags) |= PHPDBG_IS_RUNNING;
zend_execute(EG(active_op_array) TSRMLS_CC);
PHPDBG_G(flags) |= PHPDBG_IS_INTERACTIVE;
} 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) {
zend_bailout();
}
if (!(PHPDBG_G(flags) & PHPDBG_IS_STOPPING)) {
phpdbg_error("stop", "type=\"bailout\"", "Caught exit/error from VM");
restore = 0;
}
} zend_end_try();
if (PHPDBG_G(socket_client_stream)) {
php_stream_close(PHPDBG_G(socket_client_stream));
PHPDBG_G(socket_client_stream) = NULL;
}
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;
}
phpdbg_clean(1 TSRMLS_CC);
PHPDBG_G(flags) &= ~PHPDBG_IS_RUNNING;
} else {
phpdbg_error("inactive", "type=\"nocontext\"", "Nothing to execute!");
}
out:
PHPDBG_FRAME(num) = 0;
return SUCCESS;
} /* }}} */
int phpdbg_output_ev_variable(char *name, size_t len, char *keyname, size_t keylen, HashTable *parent, zval **zv TSRMLS_DC) {
phpdbg_notice("eval", "variable=\"%.*s\"", "Printing variable %.*s", (int) len, name);
phpdbg_xml("<eval %r>");
zend_print_zval_r(*zv, 0 TSRMLS_CC);
phpdbg_xml("</eval>");
phpdbg_out("\n");
efree(name);
efree(keyname);
return SUCCESS;
}
PHPDBG_COMMAND(ev) /* {{{ */
{
zend_bool stepping = ((PHPDBG_G(flags) & PHPDBG_IS_STEPPING) == PHPDBG_IS_STEPPING);
zval retval;
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_execute_data *ex = EG(current_execute_data);
HashTable *original_active_symbol_table = EG(active_symbol_table);
zval *original_This = EG(This);
zend_class_entry *original_scope = EG(scope);
zend_class_entry *original_called_scope = EG(called_scope);
zend_vm_stack original_stack = EG(argument_stack);
PHPDBG_OUTPUT_BACKUP();
if (PHPDBG_G(flags) & PHPDBG_IN_SIGNAL_HANDLER) {
phpdbg_try_access {
phpdbg_parse_variable(param->str, param->len, &EG(symbol_table), 0, phpdbg_output_ev_variable, 0 TSRMLS_CC);
} phpdbg_catch_access {
phpdbg_error("signalsegv", "", "Could not fetch data, invalid data source");
} phpdbg_end_try_access();
PHPDBG_OUTPUT_BACKUP_RESTORE();
return SUCCESS;
}
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) {
phpdbg_xml("<eval %r>");
if (PHPDBG_G(flags) & PHPDBG_WRITE_XML) {
zval *zvp = &retval;
phpdbg_xml_var_dump(&zvp TSRMLS_CC);
}
zend_print_zval_r(&retval, 0 TSRMLS_CC);
phpdbg_xml("</eval>");
phpdbg_out("\n");
zval_dtor(&retval);
}
} zend_catch {
EG(active_op_array) = orig_op_array;
EG(opline_ptr) = orig_opline;
EG(return_value_ptr_ptr) = orig_retval_ptr;
EG(current_execute_data) = ex;
EG(active_symbol_table) = original_active_symbol_table;
EG(This) = original_This;
EG(scope) = original_scope;
EG(called_scope) = original_called_scope;
EG(argument_stack) = original_stack;
} 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;
PHPDBG_OUTPUT_BACKUP_RESTORE();
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(back) /* {{{ */
{
if (!EG(in_execution)) {
phpdbg_error("inactive", "type=\"noexec\"", "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_out("Execution Context Information\n\n");
phpdbg_xml("<printinfo %r>");
#ifdef HAVE_LIBREADLINE
phpdbg_writeln("print", "readline=\"yes\"", "Readline yes");
#else
phpdbg_writeln("print", "readline=\"no\"", "Readline no");
#endif
#ifdef HAVE_LIBEDIT
phpdbg_writeln("print", "libedit=\"yes\"", "Libedit yes");
#else
phpdbg_writeln("print", "libedit=\"no\"", "Libedit no");
#endif
phpdbg_writeln("print", "context=\"%s\"", "Exec %s", PHPDBG_G(exec) ? PHPDBG_G(exec) : "none");
phpdbg_writeln("print", "compiled=\"%s\"", "Compiled %s", PHPDBG_G(ops) ? "yes" : "no");
phpdbg_writeln("print", "stepping=\"%s\"", "Stepping %s", (PHPDBG_G(flags) & PHPDBG_IS_STEPPING) ? "on" : "off");
phpdbg_writeln("print", "quiet=\"%s\"", "Quietness %s", (PHPDBG_G(flags) & PHPDBG_IS_QUIET) ? "on" : "off");
phpdbg_writeln("print", "oplog=\"%s\"", "Oplog %s", PHPDBG_G(oplog) ? "on" : "off");
if (PHPDBG_G(ops)) {
phpdbg_writeln("print", "ops=\"%d\"", "Opcodes %d", PHPDBG_G(ops)->last);
phpdbg_writeln("print", "vars=\"%d\"", "Variables %d", PHPDBG_G(ops)->last_var ? PHPDBG_G(ops)->last_var - 1 : 0);
}
phpdbg_writeln("print", "executing=\"%d\"", "Executing %s", EG(in_execution) ? "yes" : "no");
if (EG(in_execution)) {
phpdbg_writeln("print", "vmret=\"%d\"", "VM Return %d", PHPDBG_G(vmret));
}
phpdbg_writeln("print", "classes=\"%d\"", "Classes %d", zend_hash_num_elements(EG(class_table)));
phpdbg_writeln("print", "functions=\"%d\"", "Functions %d", zend_hash_num_elements(EG(function_table)));
phpdbg_writeln("print", "constants=\"%d\"", "Constants %d", zend_hash_num_elements(EG(zend_constants)));
phpdbg_writeln("print", "includes=\"%d\"", "Included %d", zend_hash_num_elements(&EG(included_files)));
phpdbg_xml("</printinfo>");
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(info) /* {{{ */
{
phpdbg_error("info", "type=\"toofewargs\" expected=\"1\"", "No information command selected!");
return SUCCESS;
} /* }}} */
PHPDBG_COMMAND(set) /* {{{ */
{
phpdbg_error("set", "type=\"toofewargs\" expected=\"1\"", "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("inactive", "type=\"noexec\"", "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"))) {
/* TODO: do something perhaps ?? do we want input ?? */
fclose(fd);
} else {
phpdbg_error("sh", "type=\"failure\" smd=\"%s\"", "Failed to execute %s", param->str);
}
return SUCCESS;
} /* }}} */
static int add_module_info(zend_module_entry *module TSRMLS_DC) {
phpdbg_write("module", "name=\"%s\"", "%s\n", module->name);
return 0;
}
static int add_zendext_info(zend_extension *ext TSRMLS_DC) {
phpdbg_write("extension", "name=\"%s\"", "%s\n", ext->name);
return 0;
}
PHPDBG_API const char *phpdbg_load_module_or_extension(char **path, char **name TSRMLS_DC) {
DL_HANDLE handle;
char *extension_dir;
extension_dir = INI_STR("extension_dir");
if (strchr(*path, '/') != NULL || strchr(*path, DEFAULT_SLASH) != NULL) {
/* path is fine */
} else if (extension_dir && extension_dir[0]) {
char *libpath;
int extension_dir_len = strlen(extension_dir);
if (IS_SLASH(extension_dir[extension_dir_len-1])) {
spprintf(&libpath, 0, "%s%s", extension_dir, *path); /* SAFE */
} else {
spprintf(&libpath, 0, "%s%c%s", extension_dir, DEFAULT_SLASH, *path); /* SAFE */
}
efree(*path);
*path = libpath;
} else {
phpdbg_error("dl", "type=\"relpath\"", "Not a full path given or extension_dir ini setting is not set");
return NULL;
}
handle = DL_LOAD(*path);
if (!handle) {
#if PHP_WIN32
char *err = GET_DL_ERROR();
if (err && *err != "") {
phpdbg_error("dl", "type=\"unknown\"", "%s", err);
LocalFree(err);
} else {
phpdbg_error("dl", "type=\"unknown\"", "Unknown reason");
}
#else
phpdbg_error("dl", "type=\"unknown\"", "%s", GET_DL_ERROR());
#endif
return NULL;
}
#if ZEND_EXTENSIONS_SUPPORT
do {
zend_extension *new_extension;
zend_extension_version_info *extension_version_info;
extension_version_info = (zend_extension_version_info *) DL_FETCH_SYMBOL(handle, "extension_version_info");
if (!extension_version_info) {
extension_version_info = (zend_extension_version_info *) DL_FETCH_SYMBOL(handle, "_extension_version_info");
}