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session.c
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3272 lines (2757 loc) · 97 KB
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/*
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Sascha Schumann <sascha@schumann.cx> |
| Andrei Zmievski <andrei@php.net> |
+----------------------------------------------------------------------+
*/
#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 "rfc1867.h"
#include "php_variables.h"
#include "php_session.h"
#include "session_arginfo.h"
#include "ext/standard/php_var.h"
#include "ext/date/php_date.h"
#include "ext/standard/url_scanner_ex.h"
#include "ext/standard/info.h"
#include "zend_smart_str.h"
#include "zend_exceptions.h"
#include "ext/standard/url.h"
#include "ext/standard/basic_functions.h"
#include "ext/standard/head.h"
#include "ext/random/php_random.h"
#include "ext/random/php_random_csprng.h"
#include "mod_files.h"
#include "mod_user.h"
#ifdef HAVE_LIBMM
#include "mod_mm.h"
#endif
#include "zend_attributes.h"
PHPAPI ZEND_DECLARE_MODULE_GLOBALS(ps)
static zend_result php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra);
static zend_result (*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;
/* 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_session_session_already_started_error(E_WARNING, "Session ini settings cannot be changed when a session is active"); \
return FAILURE; \
}
#define SESSION_CHECK_OUTPUT_STATE \
if (SG(headers_sent) && stage != ZEND_INI_STAGE_DEACTIVATE) { \
php_session_headers_already_sent_error(E_WARNING, "Session ini settings cannot be changed after headers have already been sent"); \
return FAILURE; \
}
#define SESSION_FORBIDDEN_CHARS "=,;.[ \t\r\n\013\014"
#define SESSION_FORBIDDEN_CHARS_FOR_ERROR_MSG "=,;.[ \\t\\r\\n\\013\\014"
#define APPLY_TRANS_SID (PS(use_trans_sid) && !PS(use_only_cookies))
static zend_result php_session_send_cookie(void);
static bool php_session_abort(void);
static void proposed_session_id_to_session_id(const zval *proposed_session_id);
/* Initialized in MINIT, readonly otherwise. */
static int my_module_number = 0;
/* 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(in_save_handler) = false;
PS(set_handler) = false;
PS(mod_data) = NULL;
PS(mod_user_is_open) = false;
PS(mod_user_uses_object_methods_as_handlers) = false;
PS(define_sid) = true;
PS(session_vars) = NULL;
PS(module_number) = my_module_number;
ZVAL_UNDEF(&PS(http_session_vars));
}
static inline void php_session_headers_already_sent_error(int severity, const char *message) {
const char *output_start_filename = php_output_get_start_filename();
int output_start_lineno = php_output_get_start_lineno();
if (output_start_filename != NULL) {
php_error_docref(NULL, severity, "%s (sent from %s on line %d)", message, output_start_filename, output_start_lineno);
} else {
php_error_docref(NULL, severity, "%s", message);
}
}
static inline void php_session_session_already_started_error(int severity, const char *message) {
if (PS(session_started_filename) != NULL) {
php_error_docref(NULL, severity, "%s (started from %s on line %"PRIu32")", message, ZSTR_VAL(PS(session_started_filename)), PS(session_started_lineno));
} else if (PS(auto_start)) {
/* This option can't be changed at runtime, so we can assume it's because of this */
php_error_docref(NULL, severity, "%s (session started automatically)", message);
} else {
php_error_docref(NULL, severity, "%s", message);
}
}
static inline void php_session_cleanup_filename(void)
{
if (PS(session_started_filename)) {
zend_string_release(PS(session_started_filename));
PS(session_started_filename) = NULL;
PS(session_started_lineno) = 0;
}
}
/* Dispatched by RSHUTDOWN and by php_session_destroy */
static 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_ex(PS(id), false);
PS(id) = NULL;
}
if (PS(session_vars)) {
zend_string_release_ex(PS(session_vars), false);
PS(session_vars) = NULL;
}
php_session_cleanup_filename();
/* 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;
}
PHPAPI zend_result php_session_destroy(void)
{
zend_result 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;
if (!EG(exception)) {
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;
}
PHPAPI zval* php_get_session_var_str(const char *name, size_t name_len)
{
IF_SESSION_VARS() {
return zend_hash_str_find(Z_ARRVAL_P(Z_REFVAL(PS(http_session_vars))), name, name_len);
}
return NULL;
}
static void php_session_track_init(void)
{
zval session_vars;
zend_string *var_name = ZSTR_INIT_LITERAL("_SESSION", false);
/* 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_ex(var_name, false);
}
static zend_string *php_session_encode(void)
{
IF_SESSION_VARS() {
ZEND_ASSERT(PS(serializer));
return PS(serializer)->encode();
} else {
php_error_docref(NULL, E_WARNING, "Cannot encode non-existent session");
}
return NULL;
}
static ZEND_COLD void php_session_cancel_decode(void)
{
php_session_destroy();
php_session_track_init();
php_error_docref(NULL, E_WARNING, "Failed to decode session object. Session has been destroyed");
}
static zend_result php_session_decode(const zend_string *data)
{
ZEND_ASSERT(PS(serializer));
zend_result result = SUCCESS;
zend_try {
if (PS(serializer)->decode(ZSTR_VAL(data), ZSTR_LEN(data)) == FAILURE) {
php_session_cancel_decode();
result = FAILURE;
}
} zend_catch {
php_session_cancel_decode();
zend_bailout();
} zend_end_try();
return result;
}
/*
* Note that we cannot use the BASE64 alphabet here, because
* it contains "/" and "+": both are unacceptable for simple inclusion
* into URLs.
*/
static const char hexconvtab[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,-";
static void bin_to_readable(const unsigned char *in, size_t inlen, char *out, size_t outlen, char nbits)
{
const unsigned char *p = in;
const unsigned char *end_p = in + inlen;
unsigned short w = 0;
int have = 0;
const int mask = (1 << nbits) - 1;
while (outlen--) {
if (have < nbits) {
if (p < end_p) {
w |= *p++ << have;
have += 8;
} else {
/* Should never happen. Input must be large enough. */
ZEND_UNREACHABLE();
break;
}
}
/* consume nbits */
*out++ = hexconvtab[w & mask];
w >>= nbits;
have -= nbits;
}
*out = '\0';
}
PHPAPI zend_string *php_session_create_id(PS_CREATE_SID_ARGS)
{
unsigned char rbuf[PS_MAX_SID_LENGTH];
zend_string *outid;
/* It would be enough to read ceil(sid_length * sid_bits_per_character / 8) bytes here.
* We read sid_length bytes instead for simplicity. */
if (php_random_bytes_throw(rbuf, PS(sid_length)) == FAILURE) {
return NULL;
}
outid = zend_string_alloc(PS(sid_length), false);
bin_to_readable(
rbuf, PS(sid_length),
ZSTR_VAL(outid), ZSTR_LEN(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 zend_result php_session_valid_key(const char *key)
{
size_t key_len;
const char *p;
char c;
for (p = key; (c = *p); p++) {
/* valid characters are [a-z], [A-Z], [0-9], - (hyphen) and , (comma) */
if (!((c >= 'a' && c <= 'z')
|| (c >= 'A' && c <= 'Z')
|| (c >= '0' && c <= '9')
|| c == ','
|| c == '-')) {
return FAILURE;
}
}
key_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 (key_len == 0 || key_len > PS_MAX_SID_LENGTH) {
return FAILURE;
}
return SUCCESS;
}
static zend_long php_session_gc(bool immediate)
{
zend_long sessions_deleted = -1;
bool collect = immediate;
/* GC must be done before reading session data. */
if ((PS(mod_data) || PS(mod_user_implemented))) {
/* Use probability-based GC if not forced and probability is configured */
if (!collect && PS(gc_probability) > 0) {
collect = php_random_range(PS(random), 0, PS(gc_divisor) - 1) < PS(gc_probability);
}
if (collect) {
PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &sessions_deleted);
}
}
return sessions_deleted;
}
static zend_result 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_WARNING, "No storage module chosen - failed to initialize session");
return FAILURE;
}
/* 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();
if (!EG(exception)) {
php_error_docref(NULL, E_WARNING, "Failed to initialize storage module: %s (path: %s)", PS(mod)->s_name, ZSTR_VAL(PS(save_path)));
}
return FAILURE;
}
/* 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_ex(PS(id), false);
}
PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
if (!PS(id)) {
php_session_abort();
if (!EG(exception)) {
zend_throw_error(NULL, "Failed to create session ID: %s (path: %s)", PS(mod)->s_name, ZSTR_VAL(PS(save_path)));
}
return FAILURE;
}
if (PS(use_cookies)) {
PS(send_cookie) = true;
}
} 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_ex(PS(id), false);
}
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) = true;
}
}
if (php_session_reset_id() == FAILURE) {
php_session_abort();
return FAILURE;
}
/* Read data */
php_session_track_init();
if (PS(mod)->s_read(&PS(mod_data), PS(id), &val, PS(gc_maxlifetime)) == FAILURE) {
php_session_abort();
/* FYI: Some broken save handlers return FAILURE for non-existent session ID, this is incorrect */
if (!EG(exception)) {
php_error_docref(NULL, E_WARNING, "Failed to read session data: %s (path: %s)", PS(mod)->s_name, ZSTR_VAL(PS(save_path)));
}
return FAILURE;
}
/* GC must be done after read */
php_session_gc(false);
if (PS(session_vars)) {
zend_string_release_ex(PS(session_vars), false);
PS(session_vars) = NULL;
}
if (val) {
if (PS(lazy_write)) {
PS(session_vars) = zend_string_copy(val);
}
php_session_decode(val);
zend_string_release_ex(val, false);
}
php_session_cleanup_filename();
zend_string *session_started_filename = zend_get_executed_filename_ex();
if (session_started_filename != NULL) {
PS(session_started_filename) = zend_string_copy(session_started_filename);
PS(session_started_lineno) = zend_get_executed_lineno();
}
return SUCCESS;
}
static void php_session_save_current_state(bool write)
{
zend_result ret = FAILURE;
if (write) {
IF_SESSION_VARS() {
zval *handler_function = &PS(mod_user_names).ps_write;
if (PS(mod_data) || PS(mod_user_implemented)) {
zend_string *val = php_session_encode();
/* Not being able to encode the session data means there is some kind of issue that prevents a write
* (e.g. a key containing the '|' character with the default serialization) */
if (UNEXPECTED(val == NULL)) {
return;
}
if (PS(lazy_write) && PS(session_vars)
&& PS(mod)->s_update_timestamp
&& PS(mod)->s_update_timestamp != php_session_update_timestamp
&& zend_string_equals(val, PS(session_vars))
) {
ret = PS(mod)->s_update_timestamp(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
handler_function = &PS(mod_user_names).ps_update_timestamp;
} else {
ret = PS(mod)->s_write(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
}
zend_string_release_ex(val, false);
}
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,
ZSTR_VAL(PS(save_path)));
} else {
zend_string *callable_name = zend_get_callable_name(handler_function);
php_error_docref(NULL, E_WARNING, "Failed to write session data using user "
"defined save handler. (session.save_path: %s, handler: %s)", ZSTR_VAL(PS(save_path)),
ZSTR_VAL(callable_name));
zend_string_release_ex(callable_name, false);
}
}
}
}
if (PS(mod_data) || PS(mod_user_implemented)) {
PS(mod)->s_close(&PS(mod_data));
}
}
static void php_session_normalize_vars(void)
{
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)
{
const ps_module *tmp;
int err_type = E_ERROR;
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
tmp = _php_find_ps_module(ZSTR_VAL(new_value));
if (stage == ZEND_INI_STAGE_RUNTIME) {
err_type = E_WARNING;
}
if (PG(modules_activated) && !tmp) {
/* Do not output error when restoring ini options. */
if (stage != ZEND_INI_STAGE_DEACTIVATE) {
php_error_docref(NULL, err_type, "Session save handler \"%s\" cannot be found", ZSTR_VAL(new_value));
}
return FAILURE;
}
/* "user" save handler should not be set by user */
if (!PS(set_handler) && tmp == ps_user_ptr) {
php_error_docref(NULL, err_type, "Session save handler \"user\" cannot be set by ini_set()");
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;
SESSION_CHECK_OUTPUT_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, "Serialization handler \"%s\" cannot be found", ZSTR_VAL(new_value));
}
return FAILURE;
}
PS(serializer) = tmp;
return SUCCESS;
}
static PHP_INI_MH(OnUpdateSaveDir)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
/* Only do the open_basedir check at runtime */
if (stage == PHP_INI_STAGE_RUNTIME || stage == PHP_INI_STAGE_HTACCESS) {
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 */
const char *p = strchr(ZSTR_VAL(new_value), ';');
if (p) {
p++;
const char *p2 = strchr(p, ';');
if (p2) {
p = p2 + 1;
}
} else {
p = ZSTR_VAL(new_value);
}
if (PG(open_basedir) && *p && php_check_open_basedir(p)) {
return FAILURE;
}
}
return OnUpdateStr(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateName)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
/* Numeric session.name won't work at all */
if (
ZSTR_LEN(new_value) == 0
|| zend_str_has_nul_byte(new_value)
|| is_numeric_str_function(new_value, NULL, NULL)
|| strpbrk(ZSTR_VAL(new_value), SESSION_FORBIDDEN_CHARS) != NULL
) {
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 \"%s\" must not be numeric, empty, contain null bytes or any of the following characters \"" SESSION_FORBIDDEN_CHARS_FOR_ERROR_MSG "\"", ZSTR_VAL(new_value));
}
return FAILURE;
}
return OnUpdateStrNotEmpty(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateCookieLifetime)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
#ifdef ZEND_ENABLE_ZVAL_LONG64
const zend_long maxcookie = ZEND_LONG_MAX - INT_MAX - 1;
#else
const zend_long maxcookie = ZEND_LONG_MAX / 2 - 1;
#endif
zend_long v = (zend_long)atol(ZSTR_VAL(new_value));
if (v < 0) {
php_error_docref(NULL, E_WARNING, "CookieLifetime cannot be negative");
return FAILURE;
} else if (v > maxcookie) {
return SUCCESS;
}
return OnUpdateLongGEZero(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateSessionLong)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
return OnUpdateLong(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateSessionStr)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
return OnUpdateStr(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateSessionBool)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateSidLength)
{
zend_long val;
char *endptr = NULL;
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
if (val != 32) {
php_error_docref("session.configuration", E_DEPRECATED, "session.sid_length INI setting is deprecated");
}
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;
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
if (val != 4) {
php_error_docref("session.configuration", E_DEPRECATED, "session.sid_bits_per_character INI setting is deprecated");
}
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_per_character\" must be between 4 and 6");
return FAILURE;
}
static PHP_INI_MH(OnUpdateSessionGcProbability)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
zend_long tmp = zend_ini_parse_quantity_warn(new_value, entry->name);
if (tmp < 0) {
php_error_docref("session.gc_probability", E_WARNING, "session.gc_probability must be greater than or equal to 0");
return FAILURE;
}
zend_long *p = ZEND_INI_GET_ADDR();
*p = tmp;
return SUCCESS;
}
static PHP_INI_MH(OnUpdateSessionDivisor)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
zend_long tmp = zend_ini_parse_quantity_warn(new_value, entry->name);
if (tmp <= 0) {
php_error_docref("session.gc_divisor", E_WARNING, "session.gc_divisor must be greater than 0");
return FAILURE;
}
zend_long *p = ZEND_INI_GET_ADDR();
*p = tmp;
return SUCCESS;
}
static PHP_INI_MH(OnUpdateRfc1867Freq)
{
int tmp = ZEND_ATOL(ZSTR_VAL(new_value));
if(tmp < 0) {
php_error_docref(NULL, E_WARNING, "session.upload_progress.freq must be greater than or equal to 0");
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 must be less than or equal to 100%%");
return FAILURE;
}
PS(rfc1867_freq) = -tmp;
} else {
PS(rfc1867_freq) = tmp;
}
return SUCCESS;
}
static PHP_INI_MH(OnUpdateUseOnlyCookies)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
bool *p = ZEND_INI_GET_ADDR();
*p = zend_ini_parse_bool(new_value);
if (!*p) {
php_error_docref("session.configuration", E_DEPRECATED, "Disabling session.use_only_cookies INI setting is deprecated");
}
return SUCCESS;
}
static PHP_INI_MH(OnUpdateUseTransSid)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
bool *p = ZEND_INI_GET_ADDR();
*p = zend_ini_parse_bool(new_value);
if (*p) {
php_error_docref("session.configuration", E_DEPRECATED, "Enabling session.use_trans_sid INI setting is deprecated");
}
return SUCCESS;
}
static PHP_INI_MH(OnUpdateRefererCheck)
{
SESSION_CHECK_ACTIVE_STATE;
SESSION_CHECK_OUTPUT_STATE;
if (ZSTR_LEN(new_value) != 0) {
php_error_docref("session.configuration", E_DEPRECATED, "Usage of session.referer_check INI setting is deprecated");
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
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, OnUpdateSessionGcProbability, gc_probability, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.gc_divisor", "100", PHP_INI_ALL, OnUpdateSessionDivisor, gc_divisor, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.gc_maxlifetime", "1440", PHP_INI_ALL, OnUpdateSessionLong, 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, OnUpdateCookieLifetime, cookie_lifetime, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cookie_path", "/", PHP_INI_ALL, OnUpdateSessionStr, cookie_path, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cookie_domain", "", PHP_INI_ALL, OnUpdateSessionStr, cookie_domain, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.cookie_secure", "0", PHP_INI_ALL, OnUpdateSessionBool, cookie_secure, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.cookie_partitioned", "0", PHP_INI_ALL, OnUpdateSessionBool, cookie_partitioned, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.cookie_httponly", "0", PHP_INI_ALL, OnUpdateSessionBool, cookie_httponly, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cookie_samesite", "", PHP_INI_ALL, OnUpdateSessionStr, cookie_samesite, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_cookies", "1", PHP_INI_ALL, OnUpdateSessionBool, use_cookies, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_only_cookies", "1", PHP_INI_ALL, OnUpdateUseOnlyCookies, use_only_cookies, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_strict_mode", "0", PHP_INI_ALL, OnUpdateSessionBool, use_strict_mode, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.referer_check", "", PHP_INI_ALL, OnUpdateRefererCheck, extern_referer_chk, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cache_limiter", "nocache", PHP_INI_ALL, OnUpdateSessionStr, cache_limiter, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.cache_expire", "180", PHP_INI_ALL, OnUpdateSessionLong, cache_expire, php_ps_globals, ps_globals)
STD_PHP_INI_BOOLEAN("session.use_trans_sid", "0", PHP_INI_ALL, OnUpdateUseTransSid, use_trans_sid, php_ps_globals, ps_globals)
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, OnUpdateSessionBool, 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, OnUpdateStr, rfc1867_prefix, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.upload_progress.name",
"PHP_SESSION_UPLOAD_PROGRESS", ZEND_INI_PERDIR, OnUpdateStr, 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 smart_str_extract(&buf);
}
PS_SERIALIZER_DECODE_FUNC(php_serialize)
{
const char *endptr = val + vallen;
zval session_vars;
php_unserialize_data_t var_hash;
bool result;
zend_string *var_name = ZSTR_INIT_LITERAL("_SESSION", false);
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_ex(var_name, false);
return result || !vallen ? SUCCESS : FAILURE;
}
#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;
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_append(&buf, key);
php_var_serialize(&buf, struc, &var_hash);
);
PHP_VAR_SERIALIZE_DESTROY(var_hash);
return smart_str_extract(&buf);
}
PS_SERIALIZER_DECODE_FUNC(php_binary)
{
const char *endptr = val + vallen;
php_unserialize_data_t var_hash;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
for (const char *p = val; p < endptr; ) {
size_t namelen = ((unsigned char)(*p)) & (~PS_BIN_UNDEF);
if (namelen > PS_BIN_MAX || (p + namelen) >= endptr) {