php-src/Zend/zend_ini.c
Wez Furlong b1667b579b Fix: ini entries for dl()'d modules now work under ZTS
Side-effect: avoid possible crashes when multiple threads load/unload
modules and mess with the global hash table.
2004-07-28 22:56:01 +00:00

540 lines
13 KiB
C

/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2004 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
#include "zend_qsort.h"
#include "zend_API.h"
#include "zend_ini.h"
#include "zend_alloc.h"
#include "zend_operators.h"
static HashTable *registered_zend_ini_directives;
#define NO_VALUE_PLAINTEXT "no value"
#define NO_VALUE_HTML "<i>no value</i>"
/*
* hash_apply functions
*/
static int zend_remove_ini_entries(zend_ini_entry *ini_entry, int *module_number TSRMLS_DC)
{
if (ini_entry->module_number == *module_number) {
return 1;
} else {
return 0;
}
}
static int zend_restore_ini_entry_cb(zend_ini_entry *ini_entry, int stage TSRMLS_DC)
{
if (ini_entry->modified) {
if (ini_entry->on_modify) {
ini_entry->on_modify(ini_entry, ini_entry->orig_value, ini_entry->orig_value_length, ini_entry->mh_arg1, ini_entry->mh_arg2, ini_entry->mh_arg3, stage TSRMLS_CC);
}
efree(ini_entry->value);
ini_entry->value = ini_entry->orig_value;
ini_entry->value_length = ini_entry->orig_value_length;
ini_entry->modified = 0;
ini_entry->orig_value = NULL;
ini_entry->orig_value_length = 0;
}
return 0;
}
/*
* Startup / shutdown
*/
ZEND_API int zend_ini_startup(TSRMLS_D)
{
registered_zend_ini_directives = (HashTable *) malloc(sizeof(HashTable));
EG(ini_directives) = registered_zend_ini_directives;
if (zend_hash_init_ex(registered_zend_ini_directives, 100, NULL, NULL, 1, 0)==FAILURE) {
return FAILURE;
}
return SUCCESS;
}
ZEND_API int zend_ini_shutdown(TSRMLS_D)
{
zend_hash_destroy(EG(ini_directives));
free(EG(ini_directives));
return SUCCESS;
}
ZEND_API int zend_ini_global_shutdown(TSRMLS_D)
{
zend_hash_destroy(registered_zend_ini_directives);
free(registered_zend_ini_directives);
return SUCCESS;
}
ZEND_API int zend_ini_deactivate(TSRMLS_D)
{
zend_hash_apply_with_argument(EG(ini_directives), (apply_func_arg_t) zend_restore_ini_entry_cb, (void *) ZEND_INI_STAGE_DEACTIVATE TSRMLS_CC);
return SUCCESS;
}
#ifdef ZTS
ZEND_API int zend_copy_ini_directives(TSRMLS_D)
{
zend_ini_entry ini_entry;
EG(ini_directives) = (HashTable *) malloc(sizeof(HashTable));
if (zend_hash_init_ex(EG(ini_directives), registered_zend_ini_directives->nNumOfElements, NULL, NULL, 1, 0)==FAILURE) {
return FAILURE;
}
zend_hash_copy(EG(ini_directives), registered_zend_ini_directives, NULL, &ini_entry, sizeof(zend_ini_entry));
zend_ini_refresh_caches(ZEND_INI_STAGE_STARTUP TSRMLS_CC);
return SUCCESS;
}
#endif
static int ini_key_compare(const void *a, const void *b TSRMLS_DC)
{
Bucket *f;
Bucket *s;
f = *((Bucket **) a);
s = *((Bucket **) b);
if (f->nKeyLength==0 && s->nKeyLength==0) { /* both numeric */
return ZEND_NORMALIZE_BOOL(f->nKeyLength - s->nKeyLength);
} else if (f->nKeyLength==0) { /* f is numeric, s is not */
return -1;
} else if (s->nKeyLength==0) { /* s is numeric, f is not */
return 1;
} else { /* both strings */
return zend_binary_strcasecmp(f->arKey, f->nKeyLength, s->arKey, s->nKeyLength);
}
}
ZEND_API void zend_ini_sort_entries(TSRMLS_D)
{
zend_hash_sort(EG(ini_directives), zend_qsort, ini_key_compare, 0 TSRMLS_CC);
}
/*
* Registration / unregistration
*/
ZEND_API int zend_register_ini_entries(zend_ini_entry *ini_entry, int module_number TSRMLS_DC)
{
zend_ini_entry *p = ini_entry;
zend_ini_entry *hashed_ini_entry;
zval default_value;
HashTable *directives = registered_zend_ini_directives;
#ifdef ZTS
/* if we are called during the request, eg: from dl(),
* then we should not touch the global directives table,
* and should update the per-(request|thread) version instead.
* This solves two problems: one is that ini entries for dl()'d
* extensions will now work, and the second is that updating the
* global hash here from dl() is not mutex protected and can
* lead to death.
*/
if (directives != EG(ini_directives)) {
directives = EG(ini_directives);
}
#endif
while (p->name) {
p->module_number = module_number;
if (zend_hash_add(directives, p->name, p->name_length, p, sizeof(zend_ini_entry), (void **) &hashed_ini_entry)==FAILURE) {
zend_unregister_ini_entries(module_number TSRMLS_CC);
return FAILURE;
}
if ((zend_get_configuration_directive(p->name, p->name_length, &default_value))==SUCCESS) {
if (!hashed_ini_entry->on_modify
|| hashed_ini_entry->on_modify(hashed_ini_entry, default_value.value.str.val, default_value.value.str.len, hashed_ini_entry->mh_arg1, hashed_ini_entry->mh_arg2, hashed_ini_entry->mh_arg3, ZEND_INI_STAGE_STARTUP TSRMLS_CC)==SUCCESS) {
hashed_ini_entry->value = default_value.value.str.val;
hashed_ini_entry->value_length = default_value.value.str.len;
}
} else {
if (hashed_ini_entry->on_modify) {
hashed_ini_entry->on_modify(hashed_ini_entry, hashed_ini_entry->value, hashed_ini_entry->value_length, hashed_ini_entry->mh_arg1, hashed_ini_entry->mh_arg2, hashed_ini_entry->mh_arg3, ZEND_INI_STAGE_STARTUP TSRMLS_CC);
}
}
p++;
}
return SUCCESS;
}
ZEND_API void zend_unregister_ini_entries(int module_number TSRMLS_DC)
{
zend_hash_apply_with_argument(registered_zend_ini_directives, (apply_func_arg_t) zend_remove_ini_entries, (void *) &module_number TSRMLS_CC);
}
static int zend_ini_refresh_cache(zend_ini_entry *p, int stage TSRMLS_DC)
{
if (p->on_modify) {
p->on_modify(p, p->value, p->value_length, p->mh_arg1, p->mh_arg2, p->mh_arg3, stage TSRMLS_CC);
}
return 0;
}
ZEND_API void zend_ini_refresh_caches(int stage TSRMLS_DC)
{
zend_hash_apply_with_argument(EG(ini_directives), (apply_func_arg_t) zend_ini_refresh_cache, (void *)(long) stage TSRMLS_CC);
}
ZEND_API int zend_alter_ini_entry(char *name, uint name_length, char *new_value, uint new_value_length, int modify_type, int stage)
{
zend_ini_entry *ini_entry;
char *duplicate;
TSRMLS_FETCH();
if (zend_hash_find(EG(ini_directives), name, name_length, (void **) &ini_entry)==FAILURE) {
return FAILURE;
}
if (!(ini_entry->modifiable & modify_type)) {
return FAILURE;
}
duplicate = estrndup(new_value, new_value_length);
if (!ini_entry->on_modify
|| ini_entry->on_modify(ini_entry, duplicate, new_value_length, ini_entry->mh_arg1, ini_entry->mh_arg2, ini_entry->mh_arg3, stage TSRMLS_CC)==SUCCESS) {
if (!ini_entry->modified) {
ini_entry->orig_value = ini_entry->value;
ini_entry->orig_value_length = ini_entry->value_length;
} else { /* we already changed the value, free the changed value */
efree(ini_entry->value);
}
ini_entry->value = duplicate;
ini_entry->value_length = new_value_length;
ini_entry->modified = 1;
} else {
efree(duplicate);
}
return SUCCESS;
}
ZEND_API int zend_restore_ini_entry(char *name, uint name_length, int stage)
{
zend_ini_entry *ini_entry;
TSRMLS_FETCH();
if (zend_hash_find(EG(ini_directives), name, name_length, (void **) &ini_entry)==FAILURE) {
return FAILURE;
}
zend_restore_ini_entry_cb(ini_entry, stage TSRMLS_CC);
return SUCCESS;
}
ZEND_API int zend_ini_register_displayer(char *name, uint name_length, void (*displayer)(zend_ini_entry *ini_entry, int type))
{
zend_ini_entry *ini_entry;
if (zend_hash_find(registered_zend_ini_directives, name, name_length, (void **) &ini_entry)==FAILURE) {
return FAILURE;
}
ini_entry->displayer = displayer;
return SUCCESS;
}
/*
* Data retrieval
*/
ZEND_API long zend_ini_long(char *name, uint name_length, int orig)
{
zend_ini_entry *ini_entry;
TSRMLS_FETCH();
if (zend_hash_find(EG(ini_directives), name, name_length, (void **) &ini_entry)==SUCCESS) {
if (orig && ini_entry->modified) {
return (ini_entry->orig_value ? strtol(ini_entry->orig_value, NULL, 0) : 0);
} else if (ini_entry->value) {
return strtol(ini_entry->value, NULL, 0);
}
}
return 0;
}
ZEND_API double zend_ini_double(char *name, uint name_length, int orig)
{
zend_ini_entry *ini_entry;
TSRMLS_FETCH();
if (zend_hash_find(EG(ini_directives), name, name_length, (void **) &ini_entry)==SUCCESS) {
if (orig && ini_entry->modified) {
return (double) (ini_entry->orig_value ? strtod(ini_entry->orig_value, NULL) : 0.0);
} else if (ini_entry->value) {
return (double) strtod(ini_entry->value, NULL);
}
}
return 0.0;
}
ZEND_API char *zend_ini_string(char *name, uint name_length, int orig)
{
zend_ini_entry *ini_entry;
TSRMLS_FETCH();
if (zend_hash_find(EG(ini_directives), name, name_length, (void **) &ini_entry)==SUCCESS) {
if (orig && ini_entry->modified) {
return ini_entry->orig_value;
} else {
return ini_entry->value;
}
}
return "";
}
static void zend_ini_displayer_cb(zend_ini_entry *ini_entry, int type)
{
if (ini_entry->displayer) {
ini_entry->displayer(ini_entry, type);
} else {
char *display_string;
uint display_string_length;
if (type==ZEND_INI_DISPLAY_ORIG && ini_entry->modified) {
if (ini_entry->orig_value) {
display_string = ini_entry->orig_value;
display_string_length = ini_entry->orig_value_length;
} else {
if (zend_uv.html_errors) {
display_string = NO_VALUE_HTML;
display_string_length = sizeof(NO_VALUE_HTML)-1;
} else {
display_string = NO_VALUE_PLAINTEXT;
display_string_length = sizeof(NO_VALUE_PLAINTEXT)-1;
}
}
} else if (ini_entry->value && ini_entry->value[0]) {
display_string = ini_entry->value;
display_string_length = ini_entry->value_length;
} else {
if (zend_uv.html_errors) {
display_string = NO_VALUE_HTML;
display_string_length = sizeof(NO_VALUE_HTML)-1;
} else {
display_string = NO_VALUE_PLAINTEXT;
display_string_length = sizeof(NO_VALUE_PLAINTEXT)-1;
}
}
ZEND_WRITE(display_string, display_string_length);
}
}
ZEND_INI_DISP(zend_ini_boolean_displayer_cb)
{
int value;
if (type==ZEND_INI_DISPLAY_ORIG && ini_entry->modified) {
value = (ini_entry->orig_value ? atoi(ini_entry->orig_value) : 0);
} else if (ini_entry->value) {
value = atoi(ini_entry->value);
} else {
value = 0;
}
if (value) {
ZEND_PUTS("On");
} else {
ZEND_PUTS("Off");
}
}
ZEND_INI_DISP(zend_ini_color_displayer_cb)
{
char *value;
if (type==ZEND_INI_DISPLAY_ORIG && ini_entry->modified) {
value = ini_entry->orig_value;
} else if (ini_entry->value) {
value = ini_entry->value;
} else {
value = NULL;
}
if (value) {
if (zend_uv.html_errors) {
zend_printf("<font style=\"color: %s\">%s</font>", value, value);
} else {
ZEND_PUTS(value);
}
} else {
if (zend_uv.html_errors) {
ZEND_PUTS(NO_VALUE_HTML);
} else {
ZEND_PUTS(NO_VALUE_PLAINTEXT);
}
}
}
ZEND_INI_DISP(display_link_numbers)
{
char *value;
if (type==ZEND_INI_DISPLAY_ORIG && ini_entry->modified) {
value = ini_entry->orig_value;
} else if (ini_entry->value) {
value = ini_entry->value;
} else {
value = NULL;
}
if (value) {
if (atoi(value)==-1) {
ZEND_PUTS("Unlimited");
} else {
zend_printf("%s", value);
}
}
}
/* Standard message handlers */
ZEND_API ZEND_INI_MH(OnUpdateBool)
{
zend_bool *p;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
p = (zend_bool *) (base+(size_t) mh_arg1);
if (strncasecmp("on", new_value, sizeof("on"))) {
*p = (zend_bool) atoi(new_value);
} else {
*p = (zend_bool) 1;
}
return SUCCESS;
}
ZEND_API ZEND_INI_MH(OnUpdateLong)
{
long *p;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
p = (long *) (base+(size_t) mh_arg1);
*p = zend_atoi(new_value, new_value_length);
return SUCCESS;
}
ZEND_API ZEND_INI_MH(OnUpdateReal)
{
double *p;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
p = (double *) (base+(size_t) mh_arg1);
*p = strtod(new_value, NULL);
return SUCCESS;
}
ZEND_API ZEND_INI_MH(OnUpdateString)
{
char **p;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
p = (char **) (base+(size_t) mh_arg1);
*p = new_value;
return SUCCESS;
}
ZEND_API ZEND_INI_MH(OnUpdateStringUnempty)
{
char **p;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
if (new_value && !new_value[0]) {
return FAILURE;
}
p = (char **) (base+(size_t) mh_arg1);
*p = new_value;
return SUCCESS;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/