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session.c
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 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: Sascha Schumann <[email protected]> |
| Andrei Zmievski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#ifdef PHP_WIN32
# include "win32/winutil.h"
# include "win32/time.h"
#else
# include <sys/time.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
#include "php_ini.h"
#include "SAPI.h"
#include "rfc1867.h"
#include "php_variables.h"
#include "php_session.h"
#include "ext/standard/php_random.h"
#include "ext/standard/php_var.h"
#include "ext/date/php_date.h"
#include "ext/standard/php_lcg.h"
#include "ext/standard/url_scanner_ex.h"
#include "ext/standard/info.h"
#include "zend_smart_str.h"
#include "ext/standard/url.h"
#include "ext/standard/basic_functions.h"
#include "ext/standard/head.h"
#include "mod_files.h"
#include "mod_user.h"
#ifdef HAVE_LIBMM
#include "mod_mm.h"
#endif
PHPAPI ZEND_DECLARE_MODULE_GLOBALS(ps)
static int php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra);
static int (*php_session_rfc1867_orig_callback)(unsigned int event, void *event_data, void **extra);
static void php_session_track_init(void);
/* SessionHandler class */
zend_class_entry *php_session_class_entry;
/* SessionHandlerInterface */
zend_class_entry *php_session_iface_entry;
/* SessionIdInterface */
zend_class_entry *php_session_id_iface_entry;
/* SessionUpdateTimestampHandler class */
zend_class_entry *php_session_update_timestamp_class_entry;
/* SessionUpdateTimestampInterface */
zend_class_entry *php_session_update_timestamp_iface_entry;
#define PS_MAX_SID_LENGTH 256
/* ***********
* Helpers *
*********** */
#define IF_SESSION_VARS() \
if (Z_ISREF_P(&PS(http_session_vars)) && Z_TYPE_P(Z_REFVAL(PS(http_session_vars))) == IS_ARRAY)
#define SESSION_CHECK_ACTIVE_STATE \
if (PS(session_status) == php_session_active) { \
php_error_docref(NULL, E_WARNING, "A session is active. You cannot change the session module's ini settings at this time"); \
return FAILURE; \
}
#define APPLY_TRANS_SID (PS(use_trans_sid) && !PS(use_only_cookies))
static void php_session_send_cookie(void);
static void php_session_abort(void);
/* Dispatched by RINIT and by php_session_destroy */
static inline void php_rinit_session_globals(void) /* {{{ */
{
/* Do NOT init PS(mod_user_names) here! */
/* TODO: These could be moved to MINIT and removed. These should be initialized by php_rshutdown_session_globals() always when execution is finished. */
PS(id) = NULL;
PS(session_status) = php_session_none;
PS(mod_data) = NULL;
PS(mod_user_is_open) = 0;
PS(define_sid) = 1;
PS(session_vars) = NULL;
ZVAL_UNDEF(&PS(http_session_vars));
}
/* }}} */
/* Dispatched by RSHUTDOWN and by php_session_destroy */
static inline void php_rshutdown_session_globals(void) /* {{{ */
{
/* Do NOT destroy PS(mod_user_names) here! */
if (!Z_ISUNDEF(PS(http_session_vars))) {
zval_ptr_dtor(&PS(http_session_vars));
ZVAL_UNDEF(&PS(http_session_vars));
}
if (PS(mod_data) || PS(mod_user_implemented)) {
zend_try {
PS(mod)->s_close(&PS(mod_data));
} zend_end_try();
}
if (PS(id)) {
zend_string_release(PS(id));
PS(id) = NULL;
}
if (PS(session_vars)) {
zend_string_release(PS(session_vars));
PS(session_vars) = NULL;
}
/* User save handlers may end up directly here by misuse, bugs in user script, etc. */
/* Set session status to prevent error while restoring save handler INI value. */
PS(session_status) = php_session_none;
}
/* }}} */
static int php_session_destroy(void) /* {{{ */
{
int retval = SUCCESS;
if (PS(session_status) != php_session_active) {
php_error_docref(NULL, E_WARNING, "Trying to destroy uninitialized session");
return FAILURE;
}
if (PS(id) && PS(mod)->s_destroy(&PS(mod_data), PS(id)) == FAILURE) {
retval = FAILURE;
php_error_docref(NULL, E_WARNING, "Session object destruction failed");
}
php_rshutdown_session_globals();
php_rinit_session_globals();
return retval;
}
/* }}} */
PHPAPI void php_add_session_var(zend_string *name) /* {{{ */
{
IF_SESSION_VARS() {
zval *sess_var = Z_REFVAL(PS(http_session_vars));
SEPARATE_ARRAY(sess_var);
if (!zend_hash_exists(Z_ARRVAL_P(sess_var), name)) {
zval empty_var;
ZVAL_NULL(&empty_var);
zend_hash_update(Z_ARRVAL_P(sess_var), name, &empty_var);
}
}
}
/* }}} */
PHPAPI zval* php_set_session_var(zend_string *name, zval *state_val, php_unserialize_data_t *var_hash) /* {{{ */
{
IF_SESSION_VARS() {
zval *sess_var = Z_REFVAL(PS(http_session_vars));
SEPARATE_ARRAY(sess_var);
return zend_hash_update(Z_ARRVAL_P(sess_var), name, state_val);
}
return NULL;
}
/* }}} */
PHPAPI zval* php_get_session_var(zend_string *name) /* {{{ */
{
IF_SESSION_VARS() {
return zend_hash_find(Z_ARRVAL_P(Z_REFVAL(PS(http_session_vars))), name);
}
return NULL;
}
/* }}} */
static void php_session_track_init(void) /* {{{ */
{
zval session_vars;
zend_string *var_name = zend_string_init("_SESSION", sizeof("_SESSION") - 1, 0);
/* Unconditionally destroy existing array -- possible dirty data */
zend_delete_global_variable(var_name);
if (!Z_ISUNDEF(PS(http_session_vars))) {
zval_ptr_dtor(&PS(http_session_vars));
}
array_init(&session_vars);
ZVAL_NEW_REF(&PS(http_session_vars), &session_vars);
Z_ADDREF_P(&PS(http_session_vars));
zend_hash_update_ind(&EG(symbol_table), var_name, &PS(http_session_vars));
zend_string_release(var_name);
}
/* }}} */
static zend_string *php_session_encode(void) /* {{{ */
{
IF_SESSION_VARS() {
if (!PS(serializer)) {
php_error_docref(NULL, E_WARNING, "Unknown session.serialize_handler. Failed to encode session object");
return NULL;
}
return PS(serializer)->encode();
} else {
php_error_docref(NULL, E_WARNING, "Cannot encode non-existent session");
}
return NULL;
}
/* }}} */
static int php_session_decode(zend_string *data) /* {{{ */
{
if (!PS(serializer)) {
php_error_docref(NULL, E_WARNING, "Unknown session.serialize_handler. Failed to decode session object");
return FAILURE;
}
if (PS(serializer)->decode(ZSTR_VAL(data), ZSTR_LEN(data)) == FAILURE) {
php_session_destroy();
php_session_track_init();
php_error_docref(NULL, E_WARNING, "Failed to decode session object. Session has been destroyed");
return FAILURE;
}
return SUCCESS;
}
/* }}} */
/*
* Note that we cannot use the BASE64 alphabet here, because
* it contains "/" and "+": both are unacceptable for simple inclusion
* into URLs.
*/
static char hexconvtab[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,-";
/* returns a pointer to the byte after the last valid character in out */
static size_t bin_to_readable(unsigned char *in, size_t inlen, char *out, char nbits) /* {{{ */
{
unsigned char *p, *q;
unsigned short w;
size_t len = inlen;
int mask;
int have;
p = (unsigned char *)in;
q = (unsigned char *)in + inlen;
w = 0;
have = 0;
mask = (1 << nbits) - 1;
while (inlen--) {
if (have < nbits) {
if (p < q) {
w |= *p++ << have;
have += 8;
} else {
/* consumed everything? */
if (have == 0) break;
/* No? We need a final round */
have = nbits;
}
}
/* consume nbits */
*out++ = hexconvtab[w & mask];
w >>= nbits;
have -= nbits;
}
*out = '\0';
return len;
}
/* }}} */
#define PS_EXTRA_RAND_BYTES 60
PHPAPI zend_string *php_session_create_id(PS_CREATE_SID_ARGS) /* {{{ */
{
unsigned char rbuf[PS_MAX_SID_LENGTH + PS_EXTRA_RAND_BYTES];
zend_string *outid;
/* Read additional PS_EXTRA_RAND_BYTES just in case CSPRNG is not safe enough */
if (php_random_bytes_throw(rbuf, PS(sid_length) + PS_EXTRA_RAND_BYTES) == FAILURE) {
return NULL;
}
outid = zend_string_alloc(PS(sid_length), 0);
ZSTR_LEN(outid) = bin_to_readable(rbuf, PS(sid_length), ZSTR_VAL(outid), (char)PS(sid_bits_per_character));
return outid;
}
/* }}} */
/* Default session id char validation function allowed by ps_modules.
* If you change the logic here, please also update the error message in
* ps_modules appropriately */
PHPAPI int php_session_valid_key(const char *key) /* {{{ */
{
size_t len;
const char *p;
char c;
int ret = SUCCESS;
for (p = key; (c = *p); p++) {
/* valid characters are a..z,A..Z,0..9 */
if (!((c >= 'a' && c <= 'z')
|| (c >= 'A' && c <= 'Z')
|| (c >= '0' && c <= '9')
|| c == ','
|| c == '-')) {
ret = FAILURE;
break;
}
}
len = p - key;
/* Somewhat arbitrary length limit here, but should be way more than
anyone needs and avoids file-level warnings later on if we exceed MAX_PATH */
if (len == 0 || len > PS_MAX_SID_LENGTH) {
ret = FAILURE;
}
return ret;
}
/* }}} */
static zend_long php_session_gc(zend_bool immediate) /* {{{ */
{
int nrand;
zend_long num = -1;
/* GC must be done before reading session data. */
if ((PS(mod_data) || PS(mod_user_implemented))) {
if (immediate) {
PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &num);
return num;
}
nrand = (zend_long) ((float) PS(gc_divisor) * php_combined_lcg());
if (PS(gc_probability) > 0 && nrand < PS(gc_probability)) {
PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &num);
}
}
return num;
} /* }}} */
static void php_session_initialize(void) /* {{{ */
{
zend_string *val = NULL;
PS(session_status) = php_session_active;
if (!PS(mod)) {
PS(session_status) = php_session_disabled;
php_error_docref(NULL, E_ERROR, "No storage module chosen - failed to initialize session");
return;
}
/* Open session handler first */
if (PS(mod)->s_open(&PS(mod_data), PS(save_path), PS(session_name)) == FAILURE
/* || PS(mod_data) == NULL */ /* FIXME: open must set valid PS(mod_data) with success */
) {
php_session_abort();
php_error_docref(NULL, E_ERROR, "Failed to initialize storage module: %s (path: %s)", PS(mod)->s_name, PS(save_path));
return;
}
/* If there is no ID, use session module to create one */
if (!PS(id) || !ZSTR_VAL(PS(id))[0]) {
if (PS(id)) {
zend_string_release(PS(id));
}
PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
if (!PS(id)) {
php_session_abort();
zend_throw_error(NULL, "Failed to create session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
return;
}
if (PS(use_cookies)) {
PS(send_cookie) = 1;
}
} else if (PS(use_strict_mode) && PS(mod)->s_validate_sid &&
PS(mod)->s_validate_sid(&PS(mod_data), PS(id)) == FAILURE) {
if (PS(id)) {
zend_string_release(PS(id));
}
PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
if (!PS(id)) {
PS(id) = php_session_create_id(NULL);
}
if (PS(use_cookies)) {
PS(send_cookie) = 1;
}
}
php_session_reset_id();
/* Read data */
php_session_track_init();
if (PS(mod)->s_read(&PS(mod_data), PS(id), &val, PS(gc_maxlifetime)) == FAILURE) {
php_session_abort();
/* Some broken save handler implementation returns FAILURE for non-existent session ID */
/* It's better to raise error for this, but disabled error for better compatibility */
php_error_docref(NULL, E_WARNING, "Failed to read session data: %s (path: %s)", PS(mod)->s_name, PS(save_path));
return;
}
/* GC must be done after read */
php_session_gc(0);
if (PS(session_vars)) {
zend_string_release(PS(session_vars));
PS(session_vars) = NULL;
}
if (val) {
if (PS(lazy_write)) {
PS(session_vars) = zend_string_copy(val);
}
php_session_decode(val);
zend_string_release(val);
}
}
/* }}} */
static void php_session_save_current_state(int write) /* {{{ */
{
int ret = FAILURE;
if (write) {
IF_SESSION_VARS() {
if (PS(mod_data) || PS(mod_user_implemented)) {
zend_string *val;
val = php_session_encode();
if (val) {
if (PS(lazy_write) && PS(session_vars)
&& PS(mod)->s_update_timestamp
&& PS(mod)->s_update_timestamp != php_session_update_timestamp
&& ZSTR_LEN(val) == ZSTR_LEN(PS(session_vars))
&& !memcmp(ZSTR_VAL(val), ZSTR_VAL(PS(session_vars)), ZSTR_LEN(val))
) {
ret = PS(mod)->s_update_timestamp(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
} else {
ret = PS(mod)->s_write(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
}
zend_string_release(val);
} else {
ret = PS(mod)->s_write(&PS(mod_data), PS(id), ZSTR_EMPTY_ALLOC(), PS(gc_maxlifetime));
}
}
if ((ret == FAILURE) && !EG(exception)) {
if (!PS(mod_user_implemented)) {
php_error_docref(NULL, E_WARNING, "Failed to write session data (%s). Please "
"verify that the current setting of session.save_path "
"is correct (%s)",
PS(mod)->s_name,
PS(save_path));
} else {
php_error_docref(NULL, E_WARNING, "Failed to write session data using user "
"defined save handler. (session.save_path: %s)", PS(save_path));
}
}
}
}
if (PS(mod_data) || PS(mod_user_implemented)) {
PS(mod)->s_close(&PS(mod_data));
}
}
/* }}} */
static void php_session_normalize_vars() /* {{{ */
{
PS_ENCODE_VARS;
IF_SESSION_VARS() {
PS_ENCODE_LOOP(
if (Z_TYPE_P(struc) == IS_PTR) {
zval *zv = (zval *)Z_PTR_P(struc);
ZVAL_COPY_VALUE(struc, zv);
ZVAL_UNDEF(zv);
}
);
}
}
/* }}} */
/* *************************
* INI Settings/Handlers *
************************* */
static PHP_INI_MH(OnUpdateSaveHandler) /* {{{ */
{
ps_module *tmp;
SESSION_CHECK_ACTIVE_STATE;
tmp = _php_find_ps_module(ZSTR_VAL(new_value));
if (PG(modules_activated) && !tmp) {
int err_type;
if (stage == ZEND_INI_STAGE_RUNTIME) {
err_type = E_WARNING;
} else {
err_type = E_ERROR;
}
/* Do not output error when restoring ini options. */
if (stage != ZEND_INI_STAGE_DEACTIVATE) {
php_error_docref(NULL, err_type, "Cannot find save handler '%s'", ZSTR_VAL(new_value));
}
return FAILURE;
}
PS(default_mod) = PS(mod);
PS(mod) = tmp;
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateSerializer) /* {{{ */
{
const ps_serializer *tmp;
SESSION_CHECK_ACTIVE_STATE;
tmp = _php_find_ps_serializer(ZSTR_VAL(new_value));
if (PG(modules_activated) && !tmp) {
int err_type;
if (stage == ZEND_INI_STAGE_RUNTIME) {
err_type = E_WARNING;
} else {
err_type = E_ERROR;
}
/* Do not output error when restoring ini options. */
if (stage != ZEND_INI_STAGE_DEACTIVATE) {
php_error_docref(NULL, err_type, "Cannot find serialization handler '%s'", ZSTR_VAL(new_value));
}
return FAILURE;
}
PS(serializer) = tmp;
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateTransSid) /* {{{ */
{
SESSION_CHECK_ACTIVE_STATE;
if (!strncasecmp(ZSTR_VAL(new_value), "on", sizeof("on"))) {
PS(use_trans_sid) = (zend_bool) 1;
} else {
PS(use_trans_sid) = (zend_bool) atoi(ZSTR_VAL(new_value));
}
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateSaveDir) /* {{{ */
{
/* Only do the safemode/open_basedir check at runtime */
if (stage == PHP_INI_STAGE_RUNTIME || stage == PHP_INI_STAGE_HTACCESS) {
char *p;
if (memchr(ZSTR_VAL(new_value), '\0', ZSTR_LEN(new_value)) != NULL) {
return FAILURE;
}
/* we do not use zend_memrchr() since path can contain ; itself */
if ((p = strchr(ZSTR_VAL(new_value), ';'))) {
char *p2;
p++;
if ((p2 = strchr(p, ';'))) {
p = p2 + 1;
}
} else {
p = ZSTR_VAL(new_value);
}
if (PG(open_basedir) && *p && php_check_open_basedir(p)) {
return FAILURE;
}
}
OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateName) /* {{{ */
{
/* Numeric session.name won't work at all */
if ((!ZSTR_LEN(new_value) || is_numeric_string(ZSTR_VAL(new_value), ZSTR_LEN(new_value), NULL, NULL, 0))) {
int err_type;
if (stage == ZEND_INI_STAGE_RUNTIME || stage == ZEND_INI_STAGE_ACTIVATE || stage == ZEND_INI_STAGE_STARTUP) {
err_type = E_WARNING;
} else {
err_type = E_ERROR;
}
/* Do not output error when restoring ini options. */
if (stage != ZEND_INI_STAGE_DEACTIVATE) {
php_error_docref(NULL, err_type, "session.name cannot be a numeric or empty '%s'", ZSTR_VAL(new_value));
}
return FAILURE;
}
OnUpdateStringUnempty(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateSidLength) /* {{{ */
{
zend_long val;
char *endptr = NULL;
val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
if (endptr && (*endptr == '\0')
&& val >= 22 && val <= PS_MAX_SID_LENGTH) {
/* Numeric value */
PS(sid_length) = val;
return SUCCESS;
}
php_error_docref(NULL, E_WARNING, "session.configuration 'session.sid_length' must be between 22 and 256.");
return FAILURE;
}
/* }}} */
static PHP_INI_MH(OnUpdateSidBits) /* {{{ */
{
zend_long val;
char *endptr = NULL;
val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
if (endptr && (*endptr == '\0')
&& val >= 4 && val <=6) {
/* Numeric value */
PS(sid_bits_per_character) = val;
return SUCCESS;
}
php_error_docref(NULL, E_WARNING, "session.configuration 'session.sid_bits' must be between 4 and 6.");
return FAILURE;
}
/* }}} */
static PHP_INI_MH(OnUpdateRfc1867Freq) /* {{{ */
{
int tmp;
tmp = zend_atoi(ZSTR_VAL(new_value), (int)ZSTR_LEN(new_value));
if(tmp < 0) {
php_error_docref(NULL, E_WARNING, "session.upload_progress.freq must be greater than or equal to zero");
return FAILURE;
}
if(ZSTR_LEN(new_value) > 0 && ZSTR_VAL(new_value)[ZSTR_LEN(new_value)-1] == '%') {
if(tmp > 100) {
php_error_docref(NULL, E_WARNING, "session.upload_progress.freq cannot be over 100%%");
return FAILURE;
}
PS(rfc1867_freq) = -tmp;
} else {
PS(rfc1867_freq) = tmp;
}
return SUCCESS;
} /* }}} */
/* {{{ PHP_INI
*/
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("session.save_path", "", PHP_INI_ALL, OnUpdateSaveDir,save_path, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.name", "PHPSESSID", PHP_INI_ALL, OnUpdateName, session_name, php_ps_globals, ps_globals)
PHP_INI_ENTRY("session.save_handler", "files", PHP_INI_ALL, OnUpdateSaveHandler)
STD_PHP_INI_BOOLEAN("session.auto_start", "0", PHP_INI_PERDIR, OnUpdateBool, auto_start, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.gc_probability", "1", PHP_INI_ALL, OnUpdateLong, gc_probability, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.gc_divisor", "100", PHP_INI_ALL, OnUpdateLong, gc_divisor, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.gc_maxlifetime", "1440", PHP_INI_ALL, OnUpdateLong, gc_maxlifetime, php_ps_globals, ps_globals)
PHP_INI_ENTRY("session.serialize_handler", "php", PHP_INI_ALL, OnUpdateSerializer)
STD_PHP_INI_ENTRY("session.cookie_lifetime", "0", PHP_INI_ALL, OnUpdateLong, cookie_lifetime, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cookie_path", "/", PHP_INI_ALL, OnUpdateString, cookie_path, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cookie_domain", "", PHP_INI_ALL, OnUpdateString, cookie_domain, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.cookie_secure", "", PHP_INI_ALL, OnUpdateBool, cookie_secure, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.cookie_httponly", "", PHP_INI_ALL, OnUpdateBool, cookie_httponly, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_cookies", "1", PHP_INI_ALL, OnUpdateBool, use_cookies, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_only_cookies", "1", PHP_INI_ALL, OnUpdateBool, use_only_cookies, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_strict_mode", "0", PHP_INI_ALL, OnUpdateBool, use_strict_mode, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.referer_check", "", PHP_INI_ALL, OnUpdateString, extern_referer_chk, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cache_limiter", "nocache", PHP_INI_ALL, OnUpdateString, cache_limiter, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cache_expire", "180", PHP_INI_ALL, OnUpdateLong, cache_expire, php_ps_globals, ps_globals)
PHP_INI_ENTRY("session.use_trans_sid", "0", PHP_INI_ALL, OnUpdateTransSid)
PHP_INI_ENTRY("session.sid_length", "32", PHP_INI_ALL, OnUpdateSidLength)
PHP_INI_ENTRY("session.sid_bits_per_character", "4", PHP_INI_ALL, OnUpdateSidBits)
STD_PHP_INI_BOOLEAN("session.lazy_write", "1", PHP_INI_ALL, OnUpdateBool, lazy_write, php_ps_globals, ps_globals)
/* Upload progress */
STD_PHP_INI_BOOLEAN("session.upload_progress.enabled",
"1", ZEND_INI_PERDIR, OnUpdateBool, rfc1867_enabled, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.upload_progress.cleanup",
"1", ZEND_INI_PERDIR, OnUpdateBool, rfc1867_cleanup, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.upload_progress.prefix",
"upload_progress_", ZEND_INI_PERDIR, OnUpdateString, rfc1867_prefix, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.upload_progress.name",
"PHP_SESSION_UPLOAD_PROGRESS", ZEND_INI_PERDIR, OnUpdateString, rfc1867_name, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.upload_progress.freq", "1%", ZEND_INI_PERDIR, OnUpdateRfc1867Freq, rfc1867_freq, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.upload_progress.min_freq",
"1", ZEND_INI_PERDIR, OnUpdateReal, rfc1867_min_freq,php_ps_globals, ps_globals)
/* Commented out until future discussion */
/* PHP_INI_ENTRY("session.encode_sources", "globals,track", PHP_INI_ALL, NULL) */
PHP_INI_END()
/* }}} */
/* ***************
* Serializers *
*************** */
PS_SERIALIZER_ENCODE_FUNC(php_serialize) /* {{{ */
{
smart_str buf = {0};
php_serialize_data_t var_hash;
IF_SESSION_VARS() {
PHP_VAR_SERIALIZE_INIT(var_hash);
php_var_serialize(&buf, Z_REFVAL(PS(http_session_vars)), &var_hash);
PHP_VAR_SERIALIZE_DESTROY(var_hash);
}
return buf.s;
}
/* }}} */
PS_SERIALIZER_DECODE_FUNC(php_serialize) /* {{{ */
{
const char *endptr = val + vallen;
zval session_vars;
php_unserialize_data_t var_hash;
int result;
zend_string *var_name = zend_string_init("_SESSION", sizeof("_SESSION") - 1, 0);
ZVAL_NULL(&session_vars);
PHP_VAR_UNSERIALIZE_INIT(var_hash);
result = php_var_unserialize(
&session_vars, (const unsigned char **)&val, (const unsigned char *)endptr, &var_hash);
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
if (!result) {
zval_ptr_dtor(&session_vars);
ZVAL_NULL(&session_vars);
}
if (!Z_ISUNDEF(PS(http_session_vars))) {
zval_ptr_dtor(&PS(http_session_vars));
}
if (Z_TYPE(session_vars) == IS_NULL) {
array_init(&session_vars);
}
ZVAL_NEW_REF(&PS(http_session_vars), &session_vars);
Z_ADDREF_P(&PS(http_session_vars));
zend_hash_update_ind(&EG(symbol_table), var_name, &PS(http_session_vars));
zend_string_release(var_name);
return SUCCESS;
}
/* }}} */
#define PS_BIN_NR_OF_BITS 8
#define PS_BIN_UNDEF (1<<(PS_BIN_NR_OF_BITS-1))
#define PS_BIN_MAX (PS_BIN_UNDEF-1)
PS_SERIALIZER_ENCODE_FUNC(php_binary) /* {{{ */
{
smart_str buf = {0};
php_serialize_data_t var_hash;
PS_ENCODE_VARS;
PHP_VAR_SERIALIZE_INIT(var_hash);
PS_ENCODE_LOOP(
if (ZSTR_LEN(key) > PS_BIN_MAX) continue;
smart_str_appendc(&buf, (unsigned char)ZSTR_LEN(key));
smart_str_appendl(&buf, ZSTR_VAL(key), ZSTR_LEN(key));
php_var_serialize(&buf, struc, &var_hash);
} else {
if (ZSTR_LEN(key) > PS_BIN_MAX) continue;
smart_str_appendc(&buf, (unsigned char) (ZSTR_LEN(key) & PS_BIN_UNDEF));
smart_str_appendl(&buf, ZSTR_VAL(key), ZSTR_LEN(key));
);
smart_str_0(&buf);
PHP_VAR_SERIALIZE_DESTROY(var_hash);
return buf.s;
}
/* }}} */
PS_SERIALIZER_DECODE_FUNC(php_binary) /* {{{ */
{
const char *p;
const char *endptr = val + vallen;
int has_value;
int namelen;
zend_string *name;
php_unserialize_data_t var_hash;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
for (p = val; p < endptr; ) {
namelen = ((unsigned char)(*p)) & (~PS_BIN_UNDEF);
if (namelen < 0 || namelen > PS_BIN_MAX || (p + namelen) >= endptr) {
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
return FAILURE;
}
has_value = *p & PS_BIN_UNDEF ? 0 : 1;
name = zend_string_init(p + 1, namelen, 0);
p += namelen + 1;
if (has_value) {
zval *current, rv;
current = var_tmp_var(&var_hash);
if (php_var_unserialize(current, (const unsigned char **) &p, (const unsigned char *) endptr, &var_hash)) {
ZVAL_PTR(&rv, current);
php_set_session_var(name, &rv, &var_hash);
} else {
zend_string_release(name);
php_session_normalize_vars();
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
return FAILURE;
}
} else {
PS_ADD_VARL(name);
}
zend_string_release(name);
}
php_session_normalize_vars();
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
return SUCCESS;
}
/* }}} */
#define PS_DELIMITER '|'
#define PS_UNDEF_MARKER '!'
PS_SERIALIZER_ENCODE_FUNC(php) /* {{{ */
{
smart_str buf = {0};
php_serialize_data_t var_hash;
PS_ENCODE_VARS;
PHP_VAR_SERIALIZE_INIT(var_hash);
PS_ENCODE_LOOP(
smart_str_appendl(&buf, ZSTR_VAL(key), ZSTR_LEN(key));
if (memchr(ZSTR_VAL(key), PS_DELIMITER, ZSTR_LEN(key)) || memchr(ZSTR_VAL(key), PS_UNDEF_MARKER, ZSTR_LEN(key))) {
PHP_VAR_SERIALIZE_DESTROY(var_hash);
smart_str_free(&buf);
return NULL;
}
smart_str_appendc(&buf, PS_DELIMITER);
php_var_serialize(&buf, struc, &var_hash);
} else {
smart_str_appendc(&buf, PS_UNDEF_MARKER);
smart_str_appendl(&buf, ZSTR_VAL(key), ZSTR_LEN(key));
smart_str_appendc(&buf, PS_DELIMITER);
);
smart_str_0(&buf);
PHP_VAR_SERIALIZE_DESTROY(var_hash);
return buf.s;
}
/* }}} */
PS_SERIALIZER_DECODE_FUNC(php) /* {{{ */
{
const char *p, *q;
const char *endptr = val + vallen;
ptrdiff_t namelen;
zend_string *name;
int has_value, retval = SUCCESS;
php_unserialize_data_t var_hash;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
p = val;
while (p < endptr) {
q = p;
while (*q != PS_DELIMITER) {
if (++q >= endptr) goto break_outer_loop;
}
if (p[0] == PS_UNDEF_MARKER) {
p++;
has_value = 0;
} else {
has_value = 1;
}
namelen = q - p;
name = zend_string_init(p, namelen, 0);
q++;
if (has_value) {
zval *current, rv;
current = var_tmp_var(&var_hash);
if (php_var_unserialize(current, (const unsigned char **)&q, (const unsigned char *)endptr, &var_hash)) {
ZVAL_PTR(&rv, current);
php_set_session_var(name, &rv, &var_hash);
} else {
zend_string_release(name);
retval = FAILURE;
goto break_outer_loop;
}
} else {
PS_ADD_VARL(name);
}
zend_string_release(name);
p = q;
}
break_outer_loop:
php_session_normalize_vars();
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
return retval;
}
/* }}} */
#define MAX_SERIALIZERS 32
#define PREDEFINED_SERIALIZERS 3
static ps_serializer ps_serializers[MAX_SERIALIZERS + 1] = {
PS_SERIALIZER_ENTRY(php_serialize),
PS_SERIALIZER_ENTRY(php),
PS_SERIALIZER_ENTRY(php_binary)
};
PHPAPI int php_session_register_serializer(const char *name, zend_string *(*encode)(PS_SERIALIZER_ENCODE_ARGS), int (*decode)(PS_SERIALIZER_DECODE_ARGS)) /* {{{ */
{
int ret = FAILURE;
int i;
for (i = 0; i < MAX_SERIALIZERS; i++) {
if (ps_serializers[i].name == NULL) {
ps_serializers[i].name = name;
ps_serializers[i].encode = encode;
ps_serializers[i].decode = decode;
ps_serializers[i + 1].name = NULL;
ret = SUCCESS;
break;
}
}
return ret;
}
/* }}} */
/* *******************
* Storage Modules *
******************* */
#define MAX_MODULES 32
#define PREDEFINED_MODULES 2