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phpdbg_bp.c
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2017 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 "zend.h"
#include "zend_hash.h"
#include "phpdbg.h"
#include "phpdbg_bp.h"
#include "phpdbg_utils.h"
#include "phpdbg_opcode.h"
#include "zend_globals.h"
#include "ext/standard/php_string.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg)
/* {{{ private api functions */
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_file(zend_op_array*);
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_symbol(zend_function*);
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_method(zend_op_array*);
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_opline(phpdbg_opline_ptr_t);
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_opcode(zend_uchar);
static inline phpdbg_breakbase_t *phpdbg_find_conditional_breakpoint(zend_execute_data *execute_data); /* }}} */
/*
* Note:
* A break point must always set the correct id and type
* A set breakpoint function must always map new points
*/
static inline void _phpdbg_break_mapping(int id, HashTable *table) /* {{{ */
{
zend_hash_index_update_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP], id, table);
}
/* }}} */
#define PHPDBG_BREAK_MAPPING(id, table) _phpdbg_break_mapping(id, table)
#define PHPDBG_BREAK_UNMAPPING(id) \
zend_hash_index_del(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP], (id))
#define PHPDBG_BREAK_INIT(b, t) do {\
b.id = PHPDBG_G(bp_count)++; \
b.type = t; \
b.disabled = 0;\
b.hits = 0; \
} while(0)
static void phpdbg_file_breaks_dtor(zval *data) /* {{{ */
{
phpdbg_breakfile_t *bp = (phpdbg_breakfile_t*) Z_PTR_P(data);
efree((char*)bp->filename);
efree(bp);
} /* }}} */
static void phpdbg_class_breaks_dtor(zval *data) /* {{{ */
{
phpdbg_breakmethod_t *bp = (phpdbg_breakmethod_t *) Z_PTR_P(data);
efree((char*)bp->class_name);
efree((char*)bp->func_name);
efree(bp);
} /* }}} */
static void phpdbg_opline_class_breaks_dtor(zval *data) /* {{{ */
{
zend_hash_destroy(Z_ARRVAL_P(data));
efree(Z_ARRVAL_P(data));
} /* }}} */
static void phpdbg_opline_breaks_dtor(zval *data) /* {{{ */
{
phpdbg_breakopline_t *bp = (phpdbg_breakopline_t *) Z_PTR_P(data);
if (bp->class_name) {
efree((char*)bp->class_name);
}
if (bp->func_name) {
efree((char*)bp->func_name);
}
efree(bp);
} /* }}} */
PHPDBG_API void phpdbg_reset_breakpoints(void) /* {{{ */
{
HashTable *table;
ZEND_HASH_FOREACH_PTR(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP], table) {
phpdbg_breakbase_t *brake;
ZEND_HASH_FOREACH_PTR(table, brake) {
brake->hits = 0;
} ZEND_HASH_FOREACH_END();
} ZEND_HASH_FOREACH_END();
} /* }}} */
PHPDBG_API void phpdbg_export_breakpoints(FILE *handle) /* {{{ */
{
char *string;
phpdbg_export_breakpoints_to_string(&string);
fputs(string, handle);
}
/* }}} */
PHPDBG_API void phpdbg_export_breakpoints_to_string(char **str) /* {{{ */
{
HashTable *table;
zend_ulong id = 0L;
*str = "";
if (zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP])) {
phpdbg_notice("exportbreakpoint", "count=\"%d\"", "Exporting %d breakpoints", zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP]));
/* this only looks like magic, it isn't */
ZEND_HASH_FOREACH_NUM_KEY_PTR(&PHPDBG_G(bp)[PHPDBG_BREAK_MAP], id, table) {
phpdbg_breakbase_t *brake;
ZEND_HASH_FOREACH_PTR(table, brake) {
if (brake->id == id) {
char *new_str = NULL;
switch (brake->type) {
case PHPDBG_BREAK_FILE: {
zend_string *filename = php_addcslashes(zend_string_init(((phpdbg_breakfile_t*)brake)->filename, strlen(((phpdbg_breakfile_t*)brake)->filename), 0), 1, "\\\"\n", 3);
phpdbg_asprintf(&new_str,
"%sbreak \"%s\":%lu\n", *str,
ZSTR_VAL(filename),
((phpdbg_breakfile_t*)brake)->line);
zend_string_release(filename);
} break;
case PHPDBG_BREAK_SYM: {
phpdbg_asprintf(&new_str,
"%sbreak %s\n", *str,
((phpdbg_breaksymbol_t*)brake)->symbol);
} break;
case PHPDBG_BREAK_METHOD: {
phpdbg_asprintf(&new_str,
"%sbreak %s::%s\n", *str,
((phpdbg_breakmethod_t*)brake)->class_name,
((phpdbg_breakmethod_t*)brake)->func_name);
} break;
case PHPDBG_BREAK_METHOD_OPLINE: {
phpdbg_asprintf(&new_str,
"%sbreak %s::%s#%llu\n", *str,
((phpdbg_breakopline_t*)brake)->class_name,
((phpdbg_breakopline_t*)brake)->func_name,
((phpdbg_breakopline_t*)brake)->opline_num);
} break;
case PHPDBG_BREAK_FUNCTION_OPLINE: {
phpdbg_asprintf(&new_str,
"%sbreak %s#%llu\n", *str,
((phpdbg_breakopline_t*)brake)->func_name,
((phpdbg_breakopline_t*)brake)->opline_num);
} break;
case PHPDBG_BREAK_FILE_OPLINE: {
zend_string *filename = php_addcslashes(zend_string_init(((phpdbg_breakopline_t*)brake)->class_name, strlen(((phpdbg_breakopline_t*)brake)->class_name), 0), 1, "\\\"\n", 3);
phpdbg_asprintf(&new_str,
"%sbreak \"%s\":#%llu\n", *str,
ZSTR_VAL(filename),
((phpdbg_breakopline_t*)brake)->opline_num);
zend_string_release(filename);
} break;
case PHPDBG_BREAK_OPCODE: {
phpdbg_asprintf(&new_str,
"%sbreak %s\n", *str,
((phpdbg_breakop_t*)brake)->name);
} break;
case PHPDBG_BREAK_COND: {
phpdbg_breakcond_t *conditional = (phpdbg_breakcond_t*) brake;
if (conditional->paramed) {
switch (conditional->param.type) {
case STR_PARAM:
phpdbg_asprintf(&new_str,
"%sbreak at %s if %s\n", *str, conditional->param.str, conditional->code);
break;
case METHOD_PARAM:
phpdbg_asprintf(&new_str,
"%sbreak at %s::%s if %s\n", *str,
conditional->param.method.class, conditional->param.method.name,
conditional->code);
break;
case FILE_PARAM: {
zend_string *filename = php_addcslashes(zend_string_init(conditional->param.file.name, strlen(conditional->param.file.name), 0), 1, "\\\"\n", 3);
phpdbg_asprintf(&new_str,
"%sbreak at \"%s\":%lu if %s\n", *str,
ZSTR_VAL(filename), conditional->param.file.line,
conditional->code);
zend_string_release(filename);
} break;
default: { /* do nothing */ } break;
}
} else {
phpdbg_asprintf(&new_str, "%sbreak if %s\n", str, conditional->code);
}
} break;
default: continue;
}
if ((*str)[0]) {
efree(*str);
}
*str = new_str;
}
} ZEND_HASH_FOREACH_END();
} ZEND_HASH_FOREACH_END();
}
if (!(*str)[0]) {
*str = NULL;
}
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_file(const char *path, long line_num) /* {{{ */
{
phpdbg_set_breakpoint_file_ex(path, 0, line_num);
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_file_ex(const char *path, size_t path_len, long line_num) /* {{{ */
{
php_stream_statbuf ssb;
char realpath[MAXPATHLEN];
const char *original_path = path;
zend_bool pending = 0;
zend_string *path_str;
HashTable *broken, *file_breaks = &PHPDBG_G(bp)[PHPDBG_BREAK_FILE];
phpdbg_breakfile_t new_break;
if (!path_len) {
if (VCWD_REALPATH(path, realpath)) {
path = realpath;
}
}
path_len = strlen(path);
phpdbg_debug("file path: %s, resolved path: %s, was compiled: %d\n", original_path, path, zend_hash_str_exists(&PHPDBG_G(file_sources), path, path_len));
if (!zend_hash_str_exists(&PHPDBG_G(file_sources), path, path_len)) {
if (php_stream_stat_path(path, &ssb) == FAILURE) {
if (original_path[0] == '/') {
phpdbg_error("breakpoint", "type=\"nofile\" add=\"fail\" file=\"%s\"", "Cannot stat %s, it does not exist", original_path);
return;
}
file_breaks = &PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING];
path = original_path;
path_len = strlen(path);
pending = 1;
} else if (!(ssb.sb.st_mode & (S_IFREG|S_IFLNK))) {
phpdbg_error("breakpoint", "type=\"notregular\" add=\"fail\" file=\"%s\"", "Cannot set breakpoint in %s, it is not a regular file", path);
return;
} else {
phpdbg_debug("File exists, but not compiled\n");
}
}
path_str = zend_string_init(path, path_len, 0);
if (!(broken = zend_hash_find_ptr(file_breaks, path_str))) {
HashTable breaks;
zend_hash_init(&breaks, 8, NULL, phpdbg_file_breaks_dtor, 0);
broken = zend_hash_add_mem(file_breaks, path_str, &breaks, sizeof(HashTable));
}
if (!zend_hash_index_exists(broken, line_num)) {
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_FILE);
new_break.filename = estrndup(path, path_len);
new_break.line = line_num;
zend_hash_index_update_mem(broken, line_num, &new_break, sizeof(phpdbg_breakfile_t));
PHPDBG_BREAK_MAPPING(new_break.id, broken);
if (pending) {
zend_string *file;
ZEND_HASH_FOREACH_STR_KEY(&PHPDBG_G(file_sources), file) {
HashTable *fileht;
phpdbg_debug("Compare against loaded %s\n", file);
if (!(pending = ((fileht = phpdbg_resolve_pending_file_break_ex(ZSTR_VAL(file), ZSTR_LEN(file), path_str, broken)) == NULL))) {
new_break = *(phpdbg_breakfile_t *) zend_hash_index_find_ptr(fileht, line_num);
break;
}
} ZEND_HASH_FOREACH_END();
}
if (pending) {
PHPDBG_G(flags) |= PHPDBG_HAS_PENDING_FILE_BP;
phpdbg_notice("breakpoint", "add=\"success\" id=\"%d\" file=\"%s\" line=\"%ld\" pending=\"pending\"", "Pending breakpoint #%d added at %s:%ld", new_break.id, new_break.filename, new_break.line);
} else {
PHPDBG_G(flags) |= PHPDBG_HAS_FILE_BP;
phpdbg_notice("breakpoint", "add=\"success\" id=\"%d\" file=\"%s\" line=\"%ld\"", "Breakpoint #%d added at %s:%ld", new_break.id, new_break.filename, new_break.line);
}
} else {
phpdbg_error("breakpoint", "type=\"exists\" add=\"fail\" file=\"%s\" line=\"%ld\"", "Breakpoint at %s:%ld exists", path, line_num);
}
zend_string_release(path_str);
} /* }}} */
PHPDBG_API HashTable *phpdbg_resolve_pending_file_break_ex(const char *file, uint filelen, zend_string *cur, HashTable *fileht) /* {{{ */
{
phpdbg_debug("file: %s, filelen: %u, cur: %s, curlen %u, pos: %c, memcmp: %d\n", file, filelen, ZSTR_VAL(cur), ZSTR_LEN(cur), filelen > ZSTR_LEN(cur) ? file[filelen - ZSTR_LEN(cur) - 1] : '?', filelen > ZSTR_LEN(cur) ? memcmp(file + filelen - ZSTR_LEN(cur), ZSTR_VAL(cur), ZSTR_LEN(cur)) : 0);
#ifdef _WIN32
# define WIN32_PATH_CHECK file[filelen - ZSTR_LEN(cur) - 1] == '\\'
#else
# define WIN32_PATH_CHECK 0
#endif
if (((ZSTR_LEN(cur) < filelen && (file[filelen - ZSTR_LEN(cur) - 1] == '/' || WIN32_PATH_CHECK)) || filelen == ZSTR_LEN(cur)) && !memcmp(file + filelen - ZSTR_LEN(cur), ZSTR_VAL(cur), ZSTR_LEN(cur))) {
phpdbg_breakfile_t *brake, new_brake;
HashTable *master;
PHPDBG_G(flags) |= PHPDBG_HAS_FILE_BP;
if (!(master = zend_hash_str_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE], file, filelen))) {
HashTable new_ht;
zend_hash_init(&new_ht, 8, NULL, phpdbg_file_breaks_dtor, 0);
master = zend_hash_str_add_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE], file, filelen, &new_ht, sizeof(HashTable));
}
ZEND_HASH_FOREACH_PTR(fileht, brake) {
new_brake = *brake;
new_brake.filename = estrndup(file, filelen);
PHPDBG_BREAK_UNMAPPING(brake->id);
if (zend_hash_index_add_mem(master, brake->line, &new_brake, sizeof(phpdbg_breakfile_t))) {
PHPDBG_BREAK_MAPPING(brake->id, master);
}
} ZEND_HASH_FOREACH_END();
zend_hash_del(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING], cur);
if (!zend_hash_num_elements(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING])) {
PHPDBG_G(flags) &= ~PHPDBG_HAS_PENDING_FILE_BP;
}
phpdbg_debug("compiled file: %s, cur bp file: %s\n", file, cur);
return master;
}
return NULL;
} /* }}} */
PHPDBG_API void phpdbg_resolve_pending_file_break(const char *file) /* {{{ */
{
HashTable *fileht;
uint filelen = strlen(file);
zend_string *cur;
phpdbg_debug("was compiled: %s\n", file);
ZEND_HASH_FOREACH_STR_KEY_PTR(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_PENDING], cur, fileht) {
phpdbg_debug("check bp: %s\n", cur);
phpdbg_resolve_pending_file_break_ex(file, filelen, cur, fileht);
} ZEND_HASH_FOREACH_END();
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_symbol(const char *name, size_t name_len) /* {{{ */
{
char *lcname;
if (*name == '\\') {
name++;
name_len--;
}
lcname = zend_str_tolower_dup(name, name_len);
if (!zend_hash_str_exists(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM], name, name_len)) {
phpdbg_breaksymbol_t new_break;
PHPDBG_G(flags) |= PHPDBG_HAS_SYM_BP;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_SYM);
new_break.symbol = estrndup(name, name_len);
zend_hash_str_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM], lcname, name_len, &new_break, sizeof(phpdbg_breaksymbol_t));
phpdbg_notice("breakpoint", "add=\"success\" id=\"%d\" function=\"%s\"", "Breakpoint #%d added at %s", new_break.id, new_break.symbol);
PHPDBG_BREAK_MAPPING(new_break.id, &PHPDBG_G(bp)[PHPDBG_BREAK_SYM]);
} else {
phpdbg_error("breakpoint", "type=\"exists\" add=\"fail\" function=\"%s\"", "Breakpoint exists at %s", name);
}
efree(lcname);
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_method(const char *class_name, const char *func_name) /* {{{ */
{
HashTable class_breaks, *class_table;
size_t class_len = strlen(class_name);
size_t func_len = strlen(func_name);
char *func_lcname, *class_lcname;
if (*class_name == '\\') {
class_name++;
class_len--;
}
func_lcname = zend_str_tolower_dup(func_name, func_len);
class_lcname = zend_str_tolower_dup(class_name, class_len);
if (!(class_table = zend_hash_str_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD], class_lcname, class_len))) {
zend_hash_init(&class_breaks, 8, NULL, phpdbg_class_breaks_dtor, 0);
class_table = zend_hash_str_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD], class_lcname, class_len, &class_breaks, sizeof(HashTable));
}
if (!zend_hash_str_exists(class_table, func_lcname, func_len)) {
phpdbg_breakmethod_t new_break;
PHPDBG_G(flags) |= PHPDBG_HAS_METHOD_BP;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_METHOD);
new_break.class_name = estrndup(class_name, class_len);
new_break.class_len = class_len;
new_break.func_name = estrndup(func_name, func_len);
new_break.func_len = func_len;
zend_hash_str_update_mem(class_table, func_lcname, func_len, &new_break, sizeof(phpdbg_breakmethod_t));
phpdbg_notice("breakpoint", "add=\"success\" id=\"%d\" method=\"%s::%s\"", "Breakpoint #%d added at %s::%s", new_break.id, class_name, func_name);
PHPDBG_BREAK_MAPPING(new_break.id, class_table);
} else {
phpdbg_error("breakpoint", "type=\"exists\" add=\"fail\" method=\"%s::%s\"", "Breakpoint exists at %s::%s", class_name, func_name);
}
efree(func_lcname);
efree(class_lcname);
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_opline(zend_ulong opline) /* {{{ */
{
if (!zend_hash_index_exists(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], opline)) {
phpdbg_breakline_t new_break;
PHPDBG_G(flags) |= PHPDBG_HAS_OPLINE_BP;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_OPLINE);
new_break.name = NULL;
new_break.opline = opline;
new_break.base = NULL;
zend_hash_index_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], opline, &new_break, sizeof(phpdbg_breakline_t));
phpdbg_notice("breakpoint", "add=\"success\" id=\"%d\" opline=\"%#lx\"", "Breakpoint #%d added at %#lx", new_break.id, new_break.opline);
PHPDBG_BREAK_MAPPING(new_break.id, &PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]);
} else {
phpdbg_error("breakpoint", "type=\"exists\" add=\"fail\" opline=\"%#lx\"", "Breakpoint exists at %#lx", opline);
}
} /* }}} */
PHPDBG_API int phpdbg_resolve_op_array_break(phpdbg_breakopline_t *brake, zend_op_array *op_array) /* {{{ */
{
phpdbg_breakline_t opline_break;
if (op_array->last <= brake->opline_num) {
if (brake->class_name == NULL) {
phpdbg_error("breakpoint", "type=\"maxoplines\" add=\"fail\" maxoplinenum=\"%d\" function=\"%s\" usedoplinenum=\"%ld\"", "There are only %d oplines in function %s (breaking at opline %ld impossible)", op_array->last, brake->func_name, brake->opline_num);
} else if (brake->func_name == NULL) {
phpdbg_error("breakpoint", "type=\"maxoplines\" add=\"fail\" maxoplinenum=\"%d\" file=\"%s\" usedoplinenum=\"%ld\"", "There are only %d oplines in file %s (breaking at opline %ld impossible)", op_array->last, brake->class_name, brake->opline_num);
} else {
phpdbg_error("breakpoint", "type=\"maxoplines\" add=\"fail\" maxoplinenum=\"%d\" method=\"%s::%s\" usedoplinenum=\"%ld\"", "There are only %d oplines in method %s::%s (breaking at opline %ld impossible)", op_array->last, brake->class_name, brake->func_name, brake->opline_num);
}
return FAILURE;
}
opline_break.disabled = 0;
opline_break.hits = 0;
opline_break.id = brake->id;
opline_break.opline = brake->opline = (zend_ulong)(op_array->opcodes + brake->opline_num);
opline_break.name = NULL;
opline_break.base = brake;
if (op_array->scope) {
opline_break.type = PHPDBG_BREAK_METHOD_OPLINE;
} else if (op_array->function_name) {
opline_break.type = PHPDBG_BREAK_FUNCTION_OPLINE;
} else {
opline_break.type = PHPDBG_BREAK_FILE_OPLINE;
}
PHPDBG_G(flags) |= PHPDBG_HAS_OPLINE_BP;
zend_hash_index_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], opline_break.opline, &opline_break, sizeof(phpdbg_breakline_t));
return SUCCESS;
} /* }}} */
PHPDBG_API void phpdbg_resolve_op_array_breaks(zend_op_array *op_array) /* {{{ */
{
HashTable *func_table = &PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE];
HashTable *oplines_table;
phpdbg_breakopline_t *brake;
if (op_array->scope != NULL && !(func_table = zend_hash_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE], op_array->scope->name))) {
return;
}
if (op_array->function_name == NULL) {
if (!(oplines_table = zend_hash_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE], op_array->filename))) {
return;
}
} else if (!op_array->function_name || !(oplines_table = zend_hash_find_ptr(func_table, op_array->function_name))) {
return;
}
ZEND_HASH_FOREACH_PTR(oplines_table, brake) {
if (phpdbg_resolve_op_array_break(brake, op_array) == SUCCESS) {
phpdbg_breakline_t *opline_break;
zend_hash_internal_pointer_end(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]);
opline_break = zend_hash_get_current_data_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]);
phpdbg_notice("breakpoint", "add=\"success\" id=\"%d\" symbol=\"%s\" num=\"%ld\" opline=\"%#lx\"", "Breakpoint #%d resolved at %s%s%s#%ld (opline %#lx)",
opline_break->id,
brake->class_name ? brake->class_name : "",
brake->class_name && brake->func_name ? "::" : "",
brake->func_name ? brake->func_name : "",
brake->opline_num,
opline_break->opline);
}
} ZEND_HASH_FOREACH_END();
} /* }}} */
PHPDBG_API int phpdbg_resolve_opline_break(phpdbg_breakopline_t *new_break) /* {{{ */
{
HashTable *func_table = EG(function_table);
zend_function *func;
if (new_break->func_name == NULL) {
if (EG(current_execute_data) == NULL) {
if (PHPDBG_G(ops) != NULL && !memcmp(PHPDBG_G(ops)->filename, new_break->class_name, new_break->class_len)) {
if (phpdbg_resolve_op_array_break(new_break, PHPDBG_G(ops)) == SUCCESS) {
return SUCCESS;
} else {
return 2;
}
}
return FAILURE;
} else {
zend_execute_data *execute_data = EG(current_execute_data);
do {
if (ZEND_USER_CODE(execute_data->func->common.type)) {
zend_op_array *op_array = &execute_data->func->op_array;
if (op_array->function_name == NULL && op_array->scope == NULL && new_break->class_len == ZSTR_LEN(op_array->filename) && !memcmp(ZSTR_VAL(op_array->filename), new_break->class_name, new_break->class_len)) {
if (phpdbg_resolve_op_array_break(new_break, op_array) == SUCCESS) {
return SUCCESS;
} else {
return 2;
}
}
}
} while ((execute_data = execute_data->prev_execute_data) != NULL);
return FAILURE;
}
}
if (new_break->class_name != NULL) {
zend_class_entry *ce;
if (!(ce = zend_hash_str_find_ptr(EG(class_table), zend_str_tolower_dup(new_break->class_name, new_break->class_len), new_break->class_len))) {
return FAILURE;
}
func_table = &ce->function_table;
}
if (!(func = zend_hash_str_find_ptr(func_table, zend_str_tolower_dup(new_break->func_name, new_break->func_len), new_break->func_len))) {
if (new_break->class_name != NULL && new_break->func_name != NULL) {
phpdbg_error("breakpoint", "type=\"nomethod\" method=\"%s::%s\"", "Method %s doesn't exist in class %s", new_break->func_name, new_break->class_name);
return 2;
}
return FAILURE;
}
if (func->type != ZEND_USER_FUNCTION) {
if (new_break->class_name == NULL) {
phpdbg_error("breakpoint", "type=\"internalfunction\" function=\"%s\"", "%s is not a user defined function, no oplines exist", new_break->func_name);
} else {
phpdbg_error("breakpoint", "type=\"internalfunction\" method=\"%s::%s\"", "%s::%s is not a user defined method, no oplines exist", new_break->class_name, new_break->func_name);
}
return 2;
}
if (phpdbg_resolve_op_array_break(new_break, &func->op_array) == FAILURE) {
return 2;
}
return SUCCESS;
} /* }}} */
/* TODO ... method/function oplines need to be normalized (leading backslash, lowercase) and file oplines need to be resolved properly */
PHPDBG_API void phpdbg_set_breakpoint_method_opline(const char *class, const char *method, zend_ulong opline) /* {{{ */
{
phpdbg_breakopline_t new_break;
HashTable class_breaks, *class_table;
HashTable method_breaks, *method_table;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_METHOD_OPLINE);
new_break.func_len = strlen(method);
new_break.func_name = estrndup(method, new_break.func_len);
new_break.class_len = strlen(class);
new_break.class_name = estrndup(class, new_break.class_len);
new_break.opline_num = opline;
new_break.opline = 0;
switch (phpdbg_resolve_opline_break(&new_break)) {
case FAILURE:
phpdbg_notice("breakpoint", "pending=\"pending\" id=\"%d\" method=\"%::%s\" num=\"%ld\"", "Pending breakpoint #%d at %s::%s#%ld", new_break.id, new_break.class_name, new_break.func_name, opline);
break;
case SUCCESS:
phpdbg_notice("breakpoint", "id=\"%d\" method=\"%::%s\" num=\"%ld\"", "Breakpoint #%d added at %s::%s#%ld", new_break.id, new_break.class_name, new_break.func_name, opline);
break;
case 2:
return;
}
if (!(class_table = zend_hash_str_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE], new_break.class_name, new_break.class_len))) {
zend_hash_init(&class_breaks, 8, NULL, phpdbg_opline_class_breaks_dtor, 0);
class_table = zend_hash_str_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD_OPLINE], new_break.class_name, new_break.class_len, &class_breaks, sizeof(HashTable));
}
if (!(method_table = zend_hash_str_find_ptr(class_table, new_break.func_name, new_break.func_len))) {
zend_hash_init(&method_breaks, 8, NULL, phpdbg_opline_breaks_dtor, 0);
method_table = zend_hash_str_update_mem(class_table, new_break.func_name, new_break.func_len, &method_breaks, sizeof(HashTable));
}
if (zend_hash_index_exists(method_table, opline)) {
phpdbg_error("breakpoint", "type=\"exists\" method=\"%s\" num=\"%ld\"", "Breakpoint already exists for %s::%s#%ld", new_break.class_name, new_break.func_name, opline);
efree((char*)new_break.func_name);
efree((char*)new_break.class_name);
PHPDBG_G(bp_count)--;
return;
}
PHPDBG_G(flags) |= PHPDBG_HAS_METHOD_OPLINE_BP;
PHPDBG_BREAK_MAPPING(new_break.id, method_table);
zend_hash_index_update_mem(method_table, opline, &new_break, sizeof(phpdbg_breakopline_t));
}
/* }}} */
PHPDBG_API void phpdbg_set_breakpoint_function_opline(const char *function, zend_ulong opline) /* {{{ */
{
phpdbg_breakopline_t new_break;
HashTable func_breaks, *func_table;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_FUNCTION_OPLINE);
new_break.func_len = strlen(function);
new_break.func_name = estrndup(function, new_break.func_len);
new_break.class_len = 0;
new_break.class_name = NULL;
new_break.opline_num = opline;
new_break.opline = 0;
switch (phpdbg_resolve_opline_break(&new_break)) {
case FAILURE:
phpdbg_notice("breakpoint", "pending=\"pending\" id=\"%d\" function=\"%s\" num=\"%ld\"", "Pending breakpoint #%d at %s#%ld", new_break.id, new_break.func_name, opline);
break;
case SUCCESS:
phpdbg_notice("breakpoint", "id=\"%d\" function=\"%s\" num=\"%ld\"", "Breakpoint #%d added at %s#%ld", new_break.id, new_break.func_name, opline);
break;
case 2:
return;
}
if (!(func_table = zend_hash_str_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE], new_break.func_name, new_break.func_len))) {
zend_hash_init(&func_breaks, 8, NULL, phpdbg_opline_breaks_dtor, 0);
func_table = zend_hash_str_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_FUNCTION_OPLINE], new_break.func_name, new_break.func_len, &func_breaks, sizeof(HashTable));
}
if (zend_hash_index_exists(func_table, opline)) {
phpdbg_error("breakpoint", "type=\"exists\" function=\"%s\" num=\"%ld\"", "Breakpoint already exists for %s#%ld", new_break.func_name, opline);
efree((char*)new_break.func_name);
PHPDBG_G(bp_count)--;
return;
}
PHPDBG_BREAK_MAPPING(new_break.id, func_table);
PHPDBG_G(flags) |= PHPDBG_HAS_FUNCTION_OPLINE_BP;
zend_hash_index_update_mem(func_table, opline, &new_break, sizeof(phpdbg_breakopline_t));
}
/* }}} */
PHPDBG_API void phpdbg_set_breakpoint_file_opline(const char *file, zend_ulong opline) /* {{{ */
{
phpdbg_breakopline_t new_break;
HashTable file_breaks, *file_table;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_FILE_OPLINE);
new_break.func_len = 0;
new_break.func_name = NULL;
new_break.class_len = strlen(file);
new_break.class_name = estrndup(file, new_break.class_len);
new_break.opline_num = opline;
new_break.opline = 0;
switch (phpdbg_resolve_opline_break(&new_break)) {
case FAILURE:
phpdbg_notice("breakpoint", "pending=\"pending\" id=\"%d\" file=\"%s\" num=\"%ld\"", "Pending breakpoint #%d at %s:%ld", new_break.id, new_break.class_name, opline);
break;
case SUCCESS:
phpdbg_notice("breakpoint", "id=\"%d\" file=\"%s\" num=\"%ld\"", "Breakpoint #%d added at %s:%ld", new_break.id, new_break.class_name, opline);
break;
case 2:
return;
}
if (!(file_table = zend_hash_str_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE], new_break.class_name, new_break.class_len))) {
zend_hash_init(&file_breaks, 8, NULL, phpdbg_opline_breaks_dtor, 0);
file_table = zend_hash_str_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE_OPLINE], new_break.class_name, new_break.class_len, &file_breaks, sizeof(HashTable));
}
if (zend_hash_index_exists(file_table, opline)) {
phpdbg_error("breakpoint", "type=\"exists\" file=\"%s\" num=\"%d\"", "Breakpoint already exists for %s:%ld", new_break.class_name, opline);
efree((char*)new_break.class_name);
PHPDBG_G(bp_count)--;
return;
}
PHPDBG_BREAK_MAPPING(new_break.id, file_table);
PHPDBG_G(flags) |= PHPDBG_HAS_FILE_OPLINE_BP;
zend_hash_index_update_mem(file_table, opline, &new_break, sizeof(phpdbg_breakopline_t));
}
/* }}} */
PHPDBG_API void phpdbg_set_breakpoint_opcode(const char *name, size_t name_len) /* {{{ */
{
phpdbg_breakop_t new_break;
zend_ulong hash = zend_hash_func(name, name_len);
if (zend_hash_index_exists(&PHPDBG_G(bp)[PHPDBG_BREAK_OPCODE], hash)) {
phpdbg_error("breakpoint", "type=\"exists\" opcode=\"%s\"", "Breakpoint exists for %s", name);
return;
}
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_OPCODE);
new_break.hash = hash;
new_break.name = estrndup(name, name_len);
zend_hash_index_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_OPCODE], hash, &new_break, sizeof(phpdbg_breakop_t));
PHPDBG_G(flags) |= PHPDBG_HAS_OPCODE_BP;
phpdbg_notice("breakpoint", "id=\"%d\" opcode=\"%s\"", "Breakpoint #%d added at %s", new_break.id, name);
PHPDBG_BREAK_MAPPING(new_break.id, &PHPDBG_G(bp)[PHPDBG_BREAK_OPCODE]);
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_opline_ex(phpdbg_opline_ptr_t opline) /* {{{ */
{
if (!zend_hash_index_exists(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], (zend_ulong) opline)) {
phpdbg_breakline_t new_break;
PHPDBG_G(flags) |= PHPDBG_HAS_OPLINE_BP;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_OPLINE);
new_break.opline = (zend_ulong) opline;
new_break.base = NULL;
zend_hash_index_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], (zend_ulong) opline, &new_break, sizeof(phpdbg_breakline_t));
phpdbg_notice("breakpoint", "id=\"%d\" opline=\"%#lx\"", "Breakpoint #%d added at %#lx", new_break.id, new_break.opline);
PHPDBG_BREAK_MAPPING(new_break.id, &PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE]);
} else {
phpdbg_error("breakpoint", "type=\"exists\" opline=\"%#lx\"", "Breakpoint exists for opline %#lx", (zend_ulong) opline);
}
} /* }}} */
static inline void phpdbg_create_conditional_break(phpdbg_breakcond_t *brake, const phpdbg_param_t *param, const char *expr, size_t expr_len, zend_ulong hash) /* {{{ */
{
phpdbg_breakcond_t new_break;
uint32_t cops = CG(compiler_options);
zval pv;
PHPDBG_BREAK_INIT(new_break, PHPDBG_BREAK_COND);
new_break.hash = hash;
if (param) {
new_break.paramed = 1;
phpdbg_copy_param(
param, &new_break.param);
} else {
new_break.paramed = 0;
}
cops = CG(compiler_options);
CG(compiler_options) = ZEND_COMPILE_DEFAULT_FOR_EVAL;
new_break.code = estrndup(expr, expr_len);
new_break.code_len = expr_len;
Z_STR(pv) = zend_string_alloc(expr_len + sizeof("return ;") - 1, 0);
memcpy(Z_STRVAL(pv), "return ", sizeof("return ") - 1);
memcpy(Z_STRVAL(pv) + sizeof("return ") - 1, expr, expr_len);
Z_STRVAL(pv)[Z_STRLEN(pv) - 1] = ';';
Z_STRVAL(pv)[Z_STRLEN(pv)] = '\0';
Z_TYPE_INFO(pv) = IS_STRING;
new_break.ops = zend_compile_string(&pv, "Conditional Breakpoint Code");
zval_dtor(&pv);
if (new_break.ops) {
brake = zend_hash_index_update_mem(&PHPDBG_G(bp)[PHPDBG_BREAK_COND], hash, &new_break, sizeof(phpdbg_breakcond_t));
phpdbg_notice("breakpoint", "id=\"%d\" expression=\"%s\" ptr=\"%p\"", "Conditional breakpoint #%d added %s/%p", brake->id, brake->code, brake->ops);
PHPDBG_G(flags) |= PHPDBG_HAS_COND_BP;
PHPDBG_BREAK_MAPPING(new_break.id, &PHPDBG_G(bp)[PHPDBG_BREAK_COND]);
} else {
phpdbg_error("compile", "expression=\"%s\"", "Failed to compile code for expression %s", expr);
efree((char*)new_break.code);
PHPDBG_G(bp_count)--;
}
CG(compiler_options) = cops;
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_expression(const char *expr, size_t expr_len) /* {{{ */
{
zend_ulong expr_hash = zend_inline_hash_func(expr, expr_len);
phpdbg_breakcond_t new_break;
if (!zend_hash_index_exists(&PHPDBG_G(bp)[PHPDBG_BREAK_COND], expr_hash)) {
phpdbg_create_conditional_break(
&new_break, NULL, expr, expr_len, expr_hash);
} else {
phpdbg_error("breakpoint", "type=\"exists\" expression=\"%s\"", "Conditional break %s exists", expr);
}
} /* }}} */
PHPDBG_API void phpdbg_set_breakpoint_at(const phpdbg_param_t *param) /* {{{ */
{
phpdbg_breakcond_t new_break;
phpdbg_param_t *condition;
zend_ulong hash = 0L;
if (param->next) {
condition = param->next;
hash = zend_inline_hash_func(condition->str, condition->len);
if (!zend_hash_index_exists(&PHPDBG_G(bp)[PHPDBG_BREAK_COND], hash)) {
phpdbg_create_conditional_break(&new_break, param, condition->str, condition->len, hash);
} else {
phpdbg_notice("breakpoint", "type=\"exists\" arg=\"%s\"", "Conditional break %s exists at the specified location", condition->str);
}
}
} /* }}} */
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_file(zend_op_array *op_array) /* {{{ */
{
HashTable *breaks;
phpdbg_breakbase_t *brake;
#if 0
phpdbg_debug("Op at: %.*s %d\n", ZSTR_LEN(op_array->filename), ZSTR_VAL(op_array->filename), (*EG(opline_ptr))->lineno);
#endif
/* NOTE: realpath resolution should have happened at compile time - no reason to do it here again */
if (!(breaks = zend_hash_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_FILE], op_array->filename))) {
return NULL;
}
if (EG(current_execute_data) && (brake = zend_hash_index_find_ptr(breaks, EG(current_execute_data)->opline->lineno))) {
return brake;
}
return NULL;
} /* }}} */
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_symbol(zend_function *fbc) /* {{{ */
{
zend_op_array *ops;
if (fbc->type != ZEND_USER_FUNCTION) {
return NULL;
}
ops = (zend_op_array *) fbc;
if (ops->scope) {
/* find method breaks here */
return phpdbg_find_breakpoint_method(ops);
}
if (ops->function_name) {
phpdbg_breakbase_t *brake;
zend_string *fname = zend_string_tolower(ops->function_name);
brake = zend_hash_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM], fname);
zend_string_release(fname);
return brake;
} else {
return zend_hash_str_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_SYM], ZEND_STRL("main"));
}
} /* }}} */
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_method(zend_op_array *ops) /* {{{ */
{
HashTable *class_table;
phpdbg_breakbase_t *brake = NULL;
zend_string *class_lcname = zend_string_tolower(ops->scope->name);
if ((class_table = zend_hash_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_METHOD], class_lcname))) {
zend_string *lcname = zend_string_tolower(ops->function_name);
brake = zend_hash_find_ptr(class_table, lcname);
zend_string_release(lcname);
}
zend_string_release(class_lcname);
return brake;
} /* }}} */
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_opline(phpdbg_opline_ptr_t opline) /* {{{ */
{
phpdbg_breakline_t *brake;
if ((brake = zend_hash_index_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_OPLINE], (zend_ulong) opline)) && brake->base) {
return (phpdbg_breakbase_t *)brake->base;
}
return (phpdbg_breakbase_t *) brake;
} /* }}} */
static inline phpdbg_breakbase_t *phpdbg_find_breakpoint_opcode(zend_uchar opcode) /* {{{ */
{
const char *opname = zend_get_opcode_name(opcode);
if (!opname) {
return NULL;
}
return zend_hash_index_find_ptr(&PHPDBG_G(bp)[PHPDBG_BREAK_OPCODE], zend_hash_func(opname, strlen(opname)));
} /* }}} */
static inline zend_bool phpdbg_find_breakpoint_param(phpdbg_param_t *param, zend_execute_data *execute_data) /* {{{ */
{
zend_function *function = execute_data->func;
switch (param->type) {
case NUMERIC_FUNCTION_PARAM:
case STR_PARAM: {
/* function breakpoint */
if (function->type != ZEND_USER_FUNCTION) {
return 0;
}
{