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do-aki/session.c

Created December 6, 2011 02:24
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PHP 5.4.0RC2 ext/session/session.c
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session.c
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2011 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: session.c 319597 2011-11-21 05:57:45Z laruence $ */
#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/md5.h"
#include "ext/standard/sha1.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/php_rand.h" /* for RAND_MAX */
#include "ext/standard/info.h"
#include "ext/standard/php_smart_str.h"
#include "ext/standard/url.h"
#include "ext/standard/basic_functions.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 TSRMLS_DC);
static int (*php_session_rfc1867_orig_callback)(unsigned int event, void *event_data, void **extra TSRMLS_DC);
/* SessionHandler class */
zend_class_entry *php_session_class_entry;
/* ***********
* Helpers *
*********** */
#define IF_SESSION_VARS() \
if (PS(http_session_vars) && PS(http_session_vars)->type == IS_ARRAY)
#define SESSION_CHECK_ACTIVE_STATE \
if (PS(session_status) == php_session_active) { \
php_error_docref(NULL TSRMLS_CC, E_WARNING, "A session is active. You cannot change the session module's ini settings at this time"); \
return FAILURE; \
}
/* Dispatched by RINIT and by php_session_destroy */
static inline void php_rinit_session_globals(TSRMLS_D) /* {{{ */
{
PS(id) = NULL;
PS(session_status) = php_session_none;
PS(mod_data) = NULL;
PS(mod_user_is_open) = 0;
/* Do NOT init PS(mod_user_names) here! */
PS(http_session_vars) = NULL;
}
/* }}} */
/* Dispatched by RSHUTDOWN and by php_session_destroy */
static inline void php_rshutdown_session_globals(TSRMLS_D) /* {{{ */
{
if (PS(http_session_vars)) {
zval_ptr_dtor(&PS(http_session_vars));
PS(http_session_vars) = NULL;
}
/* Do NOT destroy PS(mod_user_names) here! */
if (PS(mod_data) || PS(mod_user_implemented)) {
zend_try {
PS(mod)->s_close(&PS(mod_data) TSRMLS_CC);
} zend_end_try();
}
if (PS(id)) {
efree(PS(id));
}
}
/* }}} */
static int php_session_destroy(TSRMLS_D) /* {{{ */
{
int retval = SUCCESS;
if (PS(session_status) != php_session_active) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Trying to destroy uninitialized session");
return FAILURE;
}
if (PS(mod)->s_destroy(&PS(mod_data), PS(id) TSRMLS_CC) == FAILURE) {
retval = FAILURE;
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Session object destruction failed");
}
php_rshutdown_session_globals(TSRMLS_C);
php_rinit_session_globals(TSRMLS_C);
return retval;
}
/* }}} */
PHPAPI void php_add_session_var(char *name, size_t namelen TSRMLS_DC) /* {{{ */
{
zval **sym_track = NULL;
IF_SESSION_VARS() {
zend_hash_find(Z_ARRVAL_P(PS(http_session_vars)), name, namelen + 1, (void *) &sym_track);
} else {
return;
}
if (sym_track == NULL) {
zval *empty_var;
ALLOC_INIT_ZVAL(empty_var);
ZEND_SET_SYMBOL_WITH_LENGTH(Z_ARRVAL_P(PS(http_session_vars)), name, namelen+1, empty_var, 1, 0);
}
}
/* }}} */
PHPAPI void php_set_session_var(char *name, size_t namelen, zval *state_val, php_unserialize_data_t *var_hash TSRMLS_DC) /* {{{ */
{
IF_SESSION_VARS() {
zend_set_hash_symbol(state_val, name, namelen, PZVAL_IS_REF(state_val), 1, Z_ARRVAL_P(PS(http_session_vars)));
}
}
/* }}} */
PHPAPI int php_get_session_var(char *name, size_t namelen, zval ***state_var TSRMLS_DC) /* {{{ */
{
int ret = FAILURE;
IF_SESSION_VARS() {
ret = zend_hash_find(Z_ARRVAL_P(PS(http_session_vars)), name, namelen + 1, (void **) state_var);
}
return ret;
}
/* }}} */
static void php_session_track_init(TSRMLS_D) /* {{{ */
{
zval *session_vars = NULL;
/* Unconditionally destroy existing array -- possible dirty data */
zend_delete_global_variable("_SESSION", sizeof("_SESSION")-1 TSRMLS_CC);
if (PS(http_session_vars)) {
zval_ptr_dtor(&PS(http_session_vars));
}
MAKE_STD_ZVAL(session_vars);
array_init(session_vars);
PS(http_session_vars) = session_vars;
ZEND_SET_GLOBAL_VAR_WITH_LENGTH("_SESSION", sizeof("_SESSION"), PS(http_session_vars), 2, 1);
}
/* }}} */
static char *php_session_encode(int *newlen TSRMLS_DC) /* {{{ */
{
char *ret = NULL;
IF_SESSION_VARS() {
if (!PS(serializer)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown session.serialize_handler. Failed to encode session object");
ret = NULL;
} else if (PS(serializer)->encode(&ret, newlen TSRMLS_CC) == FAILURE) {
ret = NULL;
}
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot encode non-existent session");
}
return ret;
}
/* }}} */
static void php_session_decode(const char *val, int vallen TSRMLS_DC) /* {{{ */
{
if (!PS(serializer)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown session.serialize_handler. Failed to decode session object");
return;
}
if (PS(serializer)->decode(val, vallen TSRMLS_CC) == FAILURE) {
php_session_destroy(TSRMLS_C);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to decode session object. Session has been destroyed");
}
}
/* }}} */
/*
* 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,-";
enum {
PS_HASH_FUNC_MD5,
PS_HASH_FUNC_SHA1,
PS_HASH_FUNC_OTHER
};
/* returns a pointer to the byte after the last valid character in out */
static char *bin_to_readable(char *in, size_t inlen, char *out, char nbits) /* {{{ */
{
unsigned char *p, *q;
unsigned short w;
int mask;
int have;
p = (unsigned char *) in;
q = (unsigned char *)in + inlen;
w = 0;
have = 0;
mask = (1 << nbits) - 1;
while (1) {
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 out;
}
/* }}} */
PHPAPI char *php_session_create_id(PS_CREATE_SID_ARGS) /* {{{ */
{
PHP_MD5_CTX md5_context;
PHP_SHA1_CTX sha1_context;
#if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
void *hash_context;
#endif
unsigned char *digest;
int digest_len;
int j;
char *buf, *outid;
struct timeval tv;
zval **array;
zval **token;
char *remote_addr = NULL;
gettimeofday(&tv, NULL);
if (zend_hash_find(&EG(symbol_table), "_SERVER", sizeof("_SERVER"), (void **) &array) == SUCCESS &&
Z_TYPE_PP(array) == IS_ARRAY &&
zend_hash_find(Z_ARRVAL_PP(array), "REMOTE_ADDR", sizeof("REMOTE_ADDR"), (void **) &token) == SUCCESS
) {
remote_addr = Z_STRVAL_PP(token);
}
/* maximum 15+19+19+10 bytes */
spprintf(&buf, 0, "%.15s%ld%ld%0.8F", remote_addr ? remote_addr : "", tv.tv_sec, (long int)tv.tv_usec, php_combined_lcg(TSRMLS_C) * 10);
switch (PS(hash_func)) {
case PS_HASH_FUNC_MD5:
PHP_MD5Init(&md5_context);
PHP_MD5Update(&md5_context, (unsigned char *) buf, strlen(buf));
digest_len = 16;
break;
case PS_HASH_FUNC_SHA1:
PHP_SHA1Init(&sha1_context);
PHP_SHA1Update(&sha1_context, (unsigned char *) buf, strlen(buf));
digest_len = 20;
break;
#if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
case PS_HASH_FUNC_OTHER:
if (!PS(hash_ops)) {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Invalid session hash function");
efree(buf);
return NULL;
}
hash_context = emalloc(PS(hash_ops)->context_size);
PS(hash_ops)->hash_init(hash_context);
PS(hash_ops)->hash_update(hash_context, (unsigned char *) buf, strlen(buf));
digest_len = PS(hash_ops)->digest_size;
break;
#endif /* HAVE_HASH_EXT */
default:
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Invalid session hash function");
efree(buf);
return NULL;
}
efree(buf);
if (PS(entropy_length) > 0) {
#ifdef PHP_WIN32
unsigned char rbuf[2048];
size_t toread = PS(entropy_length);
if (php_win32_get_random_bytes(rbuf, (size_t) toread) == SUCCESS){
switch (PS(hash_func)) {
case PS_HASH_FUNC_MD5:
PHP_MD5Update(&md5_context, rbuf, toread);
break;
case PS_HASH_FUNC_SHA1:
PHP_SHA1Update(&sha1_context, rbuf, toread);
break;
# if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
case PS_HASH_FUNC_OTHER:
PS(hash_ops)->hash_update(hash_context, rbuf, toread);
break;
# endif /* HAVE_HASH_EXT */
}
}
#else
int fd;
fd = VCWD_OPEN(PS(entropy_file), O_RDONLY);
if (fd >= 0) {
unsigned char rbuf[2048];
int n;
int to_read = PS(entropy_length);
while (to_read > 0) {
n = read(fd, rbuf, MIN(to_read, sizeof(rbuf)));
if (n <= 0) break;
switch (PS(hash_func)) {
case PS_HASH_FUNC_MD5:
PHP_MD5Update(&md5_context, rbuf, n);
break;
case PS_HASH_FUNC_SHA1:
PHP_SHA1Update(&sha1_context, rbuf, n);
break;
#if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
case PS_HASH_FUNC_OTHER:
PS(hash_ops)->hash_update(hash_context, rbuf, n);
break;
#endif /* HAVE_HASH_EXT */
}
to_read -= n;
}
close(fd);
}
#endif
}
digest = emalloc(digest_len + 1);
switch (PS(hash_func)) {
case PS_HASH_FUNC_MD5:
PHP_MD5Final(digest, &md5_context);
break;
case PS_HASH_FUNC_SHA1:
PHP_SHA1Final(digest, &sha1_context);
break;
#if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
case PS_HASH_FUNC_OTHER:
PS(hash_ops)->hash_final(digest, hash_context);
efree(hash_context);
break;
#endif /* HAVE_HASH_EXT */
}
if (PS(hash_bits_per_character) < 4
|| PS(hash_bits_per_character) > 6) {
PS(hash_bits_per_character) = 4;
php_error_docref(NULL TSRMLS_CC, E_WARNING, "The ini setting hash_bits_per_character is out of range (should be 4, 5, or 6) - using 4 for now");
}
outid = emalloc((size_t)((digest_len + 2) * ((8.0f / PS(hash_bits_per_character)) + 0.5)));
j = (int) (bin_to_readable((char *)digest, digest_len, outid, (char)PS(hash_bits_per_character)) - outid);
efree(digest);
if (newlen) {
*newlen = j;
}
return outid;
}
/* }}} */
static void php_session_initialize(TSRMLS_D) /* {{{ */
{
char *val;
int vallen;
/* check session name for invalid characters */
if (PS(id) && strpbrk(PS(id), "\r\n\t <>'\"\\")) {
efree(PS(id));
PS(id) = NULL;
}
if (!PS(mod)) {
php_error_docref(NULL TSRMLS_CC, 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) TSRMLS_CC) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, 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)) {
new_session:
PS(id) = PS(mod)->s_create_sid(&PS(mod_data), NULL TSRMLS_CC);
if (PS(use_cookies)) {
PS(send_cookie) = 1;
}
}
/* Read data */
/* Question: if you create a SID here, should you also try to read data?
* I'm not sure, but while not doing so will remove one session operation
* it could prove usefull for those sites which wish to have "default"
* session information. */
php_session_track_init(TSRMLS_C);
PS(invalid_session_id) = 0;
if (PS(mod)->s_read(&PS(mod_data), PS(id), &val, &vallen TSRMLS_CC) == SUCCESS) {
php_session_decode(val, vallen TSRMLS_CC);
efree(val);
} else if (PS(invalid_session_id)) { /* address instances where the session read fails due to an invalid id */
PS(invalid_session_id) = 0;
efree(PS(id));
PS(id) = NULL;
goto new_session;
}
}
/* }}} */
static void php_session_save_current_state(TSRMLS_D) /* {{{ */
{
int ret = FAILURE;
IF_SESSION_VARS() {
if (PS(mod_data) || PS(mod_user_implemented)) {
char *val;
int vallen;
val = php_session_encode(&vallen TSRMLS_CC);
if (val) {
ret = PS(mod)->s_write(&PS(mod_data), PS(id), val, vallen TSRMLS_CC);
efree(val);
} else {
ret = PS(mod)->s_write(&PS(mod_data), PS(id), "", 0 TSRMLS_CC);
}
}
if (ret == FAILURE) {
php_error_docref(NULL TSRMLS_CC, 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));
}
}
if (PS(mod_data) || PS(mod_user_implemented)) {
PS(mod)->s_close(&PS(mod_data) TSRMLS_CC);
}
}
/* }}} */
/* *************************
* INI Settings/Handlers *
************************* */
static PHP_INI_MH(OnUpdateSaveHandler) /* {{{ */
{
ps_module *tmp;
SESSION_CHECK_ACTIVE_STATE;
tmp = _php_find_ps_module(new_value TSRMLS_CC);
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 TSRMLS_CC, err_type, "Cannot find save handler '%s'", 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(new_value TSRMLS_CC);
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 TSRMLS_CC, err_type, "Cannot find serialization handler '%s'", new_value);
}
return FAILURE;
}
PS(serializer) = tmp;
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateTransSid) /* {{{ */
{
SESSION_CHECK_ACTIVE_STATE;
if (!strncasecmp(new_value, "on", sizeof("on"))) {
PS(use_trans_sid) = (zend_bool) 1;
} else {
PS(use_trans_sid) = (zend_bool) atoi(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(new_value, '\0', new_value_length) != NULL) {
return FAILURE;
}
/* we do not use zend_memrchr() since path can contain ; itself */
if ((p = strchr(new_value, ';'))) {
char *p2;
p++;
if ((p2 = strchr(p, ';'))) {
p = p2 + 1;
}
} else {
p = new_value;
}
if (PG(open_basedir) && *p && php_check_open_basedir(p TSRMLS_CC)) {
return FAILURE;
}
}
OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
return SUCCESS;
}
/* }}} */
static PHP_INI_MH(OnUpdateHashFunc) /* {{{ */
{
long val;
char *endptr = NULL;
#if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
PS(hash_ops) = NULL;
#endif
val = strtol(new_value, &endptr, 10);
if (endptr && (*endptr == '\0')) {
/* Numeric value */
PS(hash_func) = val ? 1 : 0;
return SUCCESS;
}
if (new_value_length == (sizeof("md5") - 1) &&
strncasecmp(new_value, "md5", sizeof("md5") - 1) == 0) {
PS(hash_func) = PS_HASH_FUNC_MD5;
return SUCCESS;
}
if (new_value_length == (sizeof("sha1") - 1) &&
strncasecmp(new_value, "sha1", sizeof("sha1") - 1) == 0) {
PS(hash_func) = PS_HASH_FUNC_SHA1;
return SUCCESS;
}
#if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH) /* {{{ */
{
php_hash_ops *ops = (php_hash_ops*)php_hash_fetch_ops(new_value, new_value_length);
if (ops) {
PS(hash_func) = PS_HASH_FUNC_OTHER;
PS(hash_ops) = ops;
return SUCCESS;
}
}
#endif /* HAVE_HASH_EXT }}} */
return FAILURE;
}
/* }}} */
static PHP_INI_MH(OnUpdateRfc1867Freq) /* {{{ */
{
int tmp;
tmp = zend_atoi(new_value, new_value_length);
if(tmp < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "session.upload_progress.freq must be greater than or equal to zero");
return FAILURE;
}
if(new_value_length > 0 && new_value[new_value_length-1] == '%') {
if(tmp > 100) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "session.upload_progress.freq cannot be over 100%%");
return FAILURE;
}
PS(rfc1867_freq) = -tmp;
} else {
PS(rfc1867_freq) = tmp;
}
return SUCCESS;
} /* }}} */
static ZEND_INI_MH(OnUpdateSmartStr) /* {{{ */
{
smart_str *p;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
p = (smart_str *) (base+(size_t) mh_arg1);
smart_str_sets(p, new_value);
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, OnUpdateString, 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_ALL, 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_ENTRY("session.referer_check", "", PHP_INI_ALL, OnUpdateString, extern_referer_chk, php_ps_globals, ps_globals)
#if HAVE_DEV_URANDOM
STD_PHP_INI_ENTRY("session.entropy_file", "/dev/urandom", PHP_INI_ALL, OnUpdateString, entropy_file, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.entropy_length", "32", PHP_INI_ALL, OnUpdateLong, entropy_length, php_ps_globals, ps_globals)
#elif HAVE_DEV_ARANDOM
STD_PHP_INI_ENTRY("session.entropy_file", "/dev/arandom", PHP_INI_ALL, OnUpdateString, entropy_file, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.entropy_length", "32", PHP_INI_ALL, OnUpdateLong, entropy_length, php_ps_globals, ps_globals)
#else
STD_PHP_INI_ENTRY("session.entropy_file", "", PHP_INI_ALL, OnUpdateString, entropy_file, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.entropy_length", "0", PHP_INI_ALL, OnUpdateLong, entropy_length, php_ps_globals, ps_globals)
#endif
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.hash_function", "0", PHP_INI_ALL, OnUpdateHashFunc)
STD_PHP_INI_ENTRY("session.hash_bits_per_character", "4", PHP_INI_ALL, OnUpdateLong, hash_bits_per_character, 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, OnUpdateSmartStr, rfc1867_prefix, php_ps_globals, ps_globals)
STD_PHP_INI_ENTRY("session.upload_progress.name",
"PHP_SESSION_UPLOAD_PROGRESS", ZEND_INI_PERDIR, OnUpdateSmartStr, 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 *
*************** */
#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 (key_length > PS_BIN_MAX) continue;
smart_str_appendc(&buf, (unsigned char) key_length);
smart_str_appendl(&buf, key, key_length);
php_var_serialize(&buf, struc, &var_hash TSRMLS_CC);
} else {
if (key_length > PS_BIN_MAX) continue;
smart_str_appendc(&buf, (unsigned char) (key_length & PS_BIN_UNDEF));
smart_str_appendl(&buf, key, key_length);
);
if (newlen) {
*newlen = buf.len;
}
smart_str_0(&buf);
*newstr = buf.c;
PHP_VAR_SERIALIZE_DESTROY(var_hash);
return SUCCESS;
}
/* }}} */
PS_SERIALIZER_DECODE_FUNC(php_binary) /* {{{ */
{
const char *p;
char *name;
const char *endptr = val + vallen;
zval *current;
int namelen;
int has_value;
php_unserialize_data_t var_hash;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
for (p = val; p < endptr; ) {
zval **tmp;
namelen = ((unsigned char)(*p)) & (~PS_BIN_UNDEF);
if (namelen < 0 || namelen > PS_BIN_MAX || (p + namelen) >= endptr) {
return FAILURE;
}
has_value = *p & PS_BIN_UNDEF ? 0 : 1;
name = estrndup(p + 1, namelen);
p += namelen + 1;
if (zend_hash_find(&EG(symbol_table), name, namelen + 1, (void **) &tmp) == SUCCESS) {
if ((Z_TYPE_PP(tmp) == IS_ARRAY && Z_ARRVAL_PP(tmp) == &EG(symbol_table)) || *tmp == PS(http_session_vars)) {
efree(name);
continue;
}
}
if (has_value) {
ALLOC_INIT_ZVAL(current);
if (php_var_unserialize(&current, (const unsigned char **) &p, (const unsigned char *) endptr, &var_hash TSRMLS_CC)) {
php_set_session_var(name, namelen, current, &var_hash TSRMLS_CC);
}
zval_ptr_dtor(&current);
}
PS_ADD_VARL(name, namelen);
efree(name);
}
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, key, key_length);
if (memchr(key, PS_DELIMITER, key_length) || memchr(key, PS_UNDEF_MARKER, key_length)) {
PHP_VAR_SERIALIZE_DESTROY(var_hash);
smart_str_free(&buf);
return FAILURE;
}
smart_str_appendc(&buf, PS_DELIMITER);
php_var_serialize(&buf, struc, &var_hash TSRMLS_CC);
} else {
smart_str_appendc(&buf, PS_UNDEF_MARKER);
smart_str_appendl(&buf, key, key_length);
smart_str_appendc(&buf, PS_DELIMITER);
);
if (newlen) {
*newlen = buf.len;
}
smart_str_0(&buf);
*newstr = buf.c;
PHP_VAR_SERIALIZE_DESTROY(var_hash);
return SUCCESS;
}
/* }}} */
PS_SERIALIZER_DECODE_FUNC(php) /* {{{ */
{
const char *p, *q;
char *name;
const char *endptr = val + vallen;
zval *current;
int namelen;
int has_value;
php_unserialize_data_t var_hash;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
p = val;
while (p < endptr) {
zval **tmp;
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 = estrndup(p, namelen);
q++;
if (zend_hash_find(&EG(symbol_table), name, namelen + 1, (void **) &tmp) == SUCCESS) {
if ((Z_TYPE_PP(tmp) == IS_ARRAY && Z_ARRVAL_PP(tmp) == &EG(symbol_table)) || *tmp == PS(http_session_vars)) {
goto skip;
}
}
if (has_value) {
ALLOC_INIT_ZVAL(current);
if (php_var_unserialize(&current, (const unsigned char **) &q, (const unsigned char *) endptr, &var_hash TSRMLS_CC)) {
php_set_session_var(name, namelen, current, &var_hash TSRMLS_CC);
}
zval_ptr_dtor(&current);
}
PS_ADD_VARL(name, namelen);
skip:
efree(name);
p = q;
}
break_outer_loop:
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
return SUCCESS;
}
/* }}} */
#define MAX_SERIALIZERS 10
#define PREDEFINED_SERIALIZERS 2
static ps_serializer ps_serializers[MAX_SERIALIZERS + 1] = {
PS_SERIALIZER_ENTRY(php),
PS_SERIALIZER_ENTRY(php_binary)
};
PHPAPI int php_session_register_serializer(const char *name, int (*encode)(PS_SERIALIZER_ENCODE_ARGS), int (*decode)(PS_SERIALIZER_DECODE_ARGS)) /* {{{ */
{
int ret = -1;
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 = 0;
break;
}
}
return ret;
}
/* }}} */
/* *******************
* Storage Modules *
******************* */
#define MAX_MODULES 10
#define PREDEFINED_MODULES 2
static ps_module *ps_modules[MAX_MODULES + 1] = {
ps_files_ptr,
ps_user_ptr
};
PHPAPI int php_session_register_module(ps_module *ptr) /* {{{ */
{
int ret = -1;
int i;
for (i = 0; i < MAX_MODULES; i++) {
if (!ps_modules[i]) {
ps_modules[i] = ptr;
ret = 0;
break;
}
}
return ret;
}
/* }}} */
/* ******************
* Cache Limiters *
****************** */
typedef struct {
char *name;
void (*func)(TSRMLS_D);
} php_session_cache_limiter_t;
#define CACHE_LIMITER(name) _php_cache_limiter_##name
#define CACHE_LIMITER_FUNC(name) static void CACHE_LIMITER(name)(TSRMLS_D)
#define CACHE_LIMITER_ENTRY(name) { #name, CACHE_LIMITER(name) },
#define ADD_HEADER(a) sapi_add_header(a, strlen(a), 1);
#define MAX_STR 512
static char *month_names[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
static char *week_days[] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
};
static inline void strcpy_gmt(char *ubuf, time_t *when) /* {{{ */
{
char buf[MAX_STR];
struct tm tm, *res;
int n;
res = php_gmtime_r(when, &tm);
if (!res) {
buf[0] = '\0';
return;
}
n = slprintf(buf, sizeof(buf), "%s, %02d %s %d %02d:%02d:%02d GMT", /* SAFE */
week_days[tm.tm_wday], tm.tm_mday,
month_names[tm.tm_mon], tm.tm_year + 1900,
tm.tm_hour, tm.tm_min,
tm.tm_sec);
memcpy(ubuf, buf, n);
ubuf[n] = '\0';
}
/* }}} */
static inline void last_modified(TSRMLS_D) /* {{{ */
{
const char *path;
struct stat sb;
char buf[MAX_STR + 1];
path = SG(request_info).path_translated;
if (path) {
if (VCWD_STAT(path, &sb) == -1) {
return;
}
#define LAST_MODIFIED "Last-Modified: "
memcpy(buf, LAST_MODIFIED, sizeof(LAST_MODIFIED) - 1);
strcpy_gmt(buf + sizeof(LAST_MODIFIED) - 1, &sb.st_mtime);
ADD_HEADER(buf);
}
}
/* }}} */
#define EXPIRES "Expires: "
CACHE_LIMITER_FUNC(public) /* {{{ */
{
char buf[MAX_STR + 1];
struct timeval tv;
time_t now;
gettimeofday(&tv, NULL);
now = tv.tv_sec + PS(cache_expire) * 60;
memcpy(buf, EXPIRES, sizeof(EXPIRES) - 1);
strcpy_gmt(buf + sizeof(EXPIRES) - 1, &now);
ADD_HEADER(buf);
snprintf(buf, sizeof(buf) , "Cache-Control: public, max-age=%ld", PS(cache_expire) * 60); /* SAFE */
ADD_HEADER(buf);
last_modified(TSRMLS_C);
}
/* }}} */
CACHE_LIMITER_FUNC(private_no_expire) /* {{{ */
{
char buf[MAX_STR + 1];
snprintf(buf, sizeof(buf), "Cache-Control: private, max-age=%ld, pre-check=%ld", PS(cache_expire) * 60, PS(cache_expire) * 60); /* SAFE */
ADD_HEADER(buf);
last_modified(TSRMLS_C);
}
/* }}} */
CACHE_LIMITER_FUNC(private) /* {{{ */
{
ADD_HEADER("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
CACHE_LIMITER(private_no_expire)(TSRMLS_C);
}
/* }}} */
CACHE_LIMITER_FUNC(nocache) /* {{{ */
{
ADD_HEADER("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
/* For HTTP/1.1 conforming clients and the rest (MSIE 5) */
ADD_HEADER("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
/* For HTTP/1.0 conforming clients */
ADD_HEADER("Pragma: no-cache");
}
/* }}} */
static php_session_cache_limiter_t php_session_cache_limiters[] = {
CACHE_LIMITER_ENTRY(public)
CACHE_LIMITER_ENTRY(private)
CACHE_LIMITER_ENTRY(private_no_expire)
CACHE_LIMITER_ENTRY(nocache)
{0}
};
static int php_session_cache_limiter(TSRMLS_D) /* {{{ */
{
php_session_cache_limiter_t *lim;
if (PS(cache_limiter)[0] == '\0') return 0;
if (SG(headers_sent)) {
const char *output_start_filename = php_output_get_start_filename(TSRMLS_C);
int output_start_lineno = php_output_get_start_lineno(TSRMLS_C);
if (output_start_filename) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot send session cache limiter - headers already sent (output started at %s:%d)", output_start_filename, output_start_lineno);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot send session cache limiter - headers already sent");
}
return -2;
}
for (lim = php_session_cache_limiters; lim->name; lim++) {
if (!strcasecmp(lim->name, PS(cache_limiter))) {
lim->func(TSRMLS_C);
return 0;
}
}
return -1;
}
/* }}} */
/* *********************
* Cookie Management *
********************* */
#define COOKIE_SET_COOKIE "Set-Cookie: "
#define COOKIE_EXPIRES "; expires="
#define COOKIE_PATH "; path="
#define COOKIE_DOMAIN "; domain="
#define COOKIE_SECURE "; secure"
#define COOKIE_HTTPONLY "; HttpOnly"
static void php_session_send_cookie(TSRMLS_D) /* {{{ */
{
smart_str ncookie = {0};
char *date_fmt = NULL;
char *e_session_name, *e_id;
if (SG(headers_sent)) {
const char *output_start_filename = php_output_get_start_filename(TSRMLS_C);
int output_start_lineno = php_output_get_start_lineno(TSRMLS_C);
if (output_start_filename) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot send session cookie - headers already sent by (output started at %s:%d)", output_start_filename, output_start_lineno);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot send session cookie - headers already sent");
}
return;
}
/* URL encode session_name and id because they might be user supplied */
e_session_name = php_url_encode(PS(session_name), strlen(PS(session_name)), NULL);
e_id = php_url_encode(PS(id), strlen(PS(id)), NULL);
smart_str_appends(&ncookie, COOKIE_SET_COOKIE);
smart_str_appends(&ncookie, e_session_name);
smart_str_appendc(&ncookie, '=');
smart_str_appends(&ncookie, e_id);
efree(e_session_name);
efree(e_id);
if (PS(cookie_lifetime) > 0) {
struct timeval tv;
time_t t;
gettimeofday(&tv, NULL);
t = tv.tv_sec + PS(cookie_lifetime);
if (t > 0) {
date_fmt = php_format_date("D, d-M-Y H:i:s T", sizeof("D, d-M-Y H:i:s T")-1, t, 0 TSRMLS_CC);
smart_str_appends(&ncookie, COOKIE_EXPIRES);
smart_str_appends(&ncookie, date_fmt);
efree(date_fmt);
}
}
if (PS(cookie_path)[0]) {
smart_str_appends(&ncookie, COOKIE_PATH);
smart_str_appends(&ncookie, PS(cookie_path));
}
if (PS(cookie_domain)[0]) {
smart_str_appends(&ncookie, COOKIE_DOMAIN);
smart_str_appends(&ncookie, PS(cookie_domain));
}
if (PS(cookie_secure)) {
smart_str_appends(&ncookie, COOKIE_SECURE);
}
if (PS(cookie_httponly)) {
smart_str_appends(&ncookie, COOKIE_HTTPONLY);
}
smart_str_0(&ncookie);
/* 'replace' must be 0 here, else a previous Set-Cookie
header, probably sent with setcookie() will be replaced! */
sapi_add_header_ex(ncookie.c, ncookie.len, 0, 0 TSRMLS_CC);
}
/* }}} */
PHPAPI ps_module *_php_find_ps_module(char *name TSRMLS_DC) /* {{{ */
{
ps_module *ret = NULL;
ps_module **mod;
int i;
for (i = 0, mod = ps_modules; i < MAX_MODULES; i++, mod++) {
if (*mod && !strcasecmp(name, (*mod)->s_name)) {
ret = *mod;
break;
}
}
return ret;
}
/* }}} */
PHPAPI const ps_serializer *_php_find_ps_serializer(char *name TSRMLS_DC) /* {{{ */
{
const ps_serializer *ret = NULL;
const ps_serializer *mod;
for (mod = ps_serializers; mod->name; mod++) {
if (!strcasecmp(name, mod->name)) {
ret = mod;
break;
}
}
return ret;
}
/* }}} */
#define PPID2SID \
convert_to_string((*ppid)); \
PS(id) = estrndup(Z_STRVAL_PP(ppid), Z_STRLEN_PP(ppid))
static void php_session_reset_id(TSRMLS_D) /* {{{ */
{
int module_number = PS(module_number);
if (PS(use_cookies) && PS(send_cookie)) {
php_session_send_cookie(TSRMLS_C);
PS(send_cookie) = 0;
}
/* if the SID constant exists, destroy it. */
zend_hash_del(EG(zend_constants), "sid", sizeof("sid"));
if (PS(define_sid)) {
smart_str var = {0};
smart_str_appends(&var, PS(session_name));
smart_str_appendc(&var, '=');
smart_str_appends(&var, PS(id));
smart_str_0(&var);
REGISTER_STRINGL_CONSTANT("SID", var.c, var.len, 0);
} else {
REGISTER_STRINGL_CONSTANT("SID", STR_EMPTY_ALLOC(), 0, 0);
}
if (PS(apply_trans_sid)) {
php_url_scanner_reset_vars(TSRMLS_C);
php_url_scanner_add_var(PS(session_name), strlen(PS(session_name)), PS(id), strlen(PS(id)), 1 TSRMLS_CC);
}
}
/* }}} */
PHPAPI void php_session_start(TSRMLS_D) /* {{{ */
{
zval **ppid;
zval **data;
char *p, *value;
int nrand;
int lensess;
if (PS(use_only_cookies)) {
PS(apply_trans_sid) = 0;
} else {
PS(apply_trans_sid) = PS(use_trans_sid);
}
switch (PS(session_status)) {
case php_session_active:
php_error(E_NOTICE, "A session had already been started - ignoring session_start()");
return;
break;
case php_session_disabled:
value = zend_ini_string("session.save_handler", sizeof("session.save_handler"), 0);
if (!PS(mod) && value) {
PS(mod) = _php_find_ps_module(value TSRMLS_CC);
if (!PS(mod)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot find save handler '%s' - session startup failed", value);
return;
}
}
value = zend_ini_string("session.serialize_handler", sizeof("session.serialize_handler"), 0);
if (!PS(serializer) && value) {
PS(serializer) = _php_find_ps_serializer(value TSRMLS_CC);
if (!PS(serializer)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot find serialization handler '%s' - session startup failed", value);
return;
}
}
PS(session_status) = php_session_none;
/* fallthrough */
default:
case php_session_none:
PS(define_sid) = 1;
PS(send_cookie) = 1;
}
lensess = strlen(PS(session_name));
/* Cookies are preferred, because initially
* cookie and get variables will be available. */
if (!PS(id)) {
if (PS(use_cookies) && zend_hash_find(&EG(symbol_table), "_COOKIE", sizeof("_COOKIE"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_ARRAY &&
zend_hash_find(Z_ARRVAL_PP(data), PS(session_name), lensess + 1, (void **) &ppid) == SUCCESS
) {
PPID2SID;
PS(apply_trans_sid) = 0;
PS(send_cookie) = 0;
PS(define_sid) = 0;
}
if (!PS(use_only_cookies) && !PS(id) &&
zend_hash_find(&EG(symbol_table), "_GET", sizeof("_GET"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_ARRAY &&
zend_hash_find(Z_ARRVAL_PP(data), PS(session_name), lensess + 1, (void **) &ppid) == SUCCESS
) {
PPID2SID;
PS(send_cookie) = 0;
}
if (!PS(use_only_cookies) && !PS(id) &&
zend_hash_find(&EG(symbol_table), "_POST", sizeof("_POST"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_ARRAY &&
zend_hash_find(Z_ARRVAL_PP(data), PS(session_name), lensess + 1, (void **) &ppid) == SUCCESS
) {
PPID2SID;
PS(send_cookie) = 0;
}
}
/* Check the REQUEST_URI symbol for a string of the form
* '<session-name>=<session-id>' to allow URLs of the form
* http://yoursite/<session-name>=<session-id>/script.php */
if (!PS(use_only_cookies) && !PS(id) && PG(http_globals)[TRACK_VARS_SERVER] &&
zend_hash_find(Z_ARRVAL_P(PG(http_globals)[TRACK_VARS_SERVER]), "REQUEST_URI", sizeof("REQUEST_URI"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_STRING &&
(p = strstr(Z_STRVAL_PP(data), PS(session_name))) &&
p[lensess] == '='
) {
char *q;
p += lensess + 1;
if ((q = strpbrk(p, "/?\\"))) {
PS(id) = estrndup(p, q - p);
PS(send_cookie) = 0;
}
}
/* Check whether the current request was referred to by
* an external site which invalidates the previously found id. */
if (PS(id) &&
PS(extern_referer_chk)[0] != '\0' &&
PG(http_globals)[TRACK_VARS_SERVER] &&
zend_hash_find(Z_ARRVAL_P(PG(http_globals)[TRACK_VARS_SERVER]), "HTTP_REFERER", sizeof("HTTP_REFERER"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_STRING &&
Z_STRLEN_PP(data) != 0 &&
strstr(Z_STRVAL_PP(data), PS(extern_referer_chk)) == NULL
) {
efree(PS(id));
PS(id) = NULL;
PS(send_cookie) = 1;
if (PS(use_trans_sid) && !PS(use_only_cookies)) {
PS(apply_trans_sid) = 1;
}
}
php_session_initialize(TSRMLS_C);
if (!PS(use_cookies) && PS(send_cookie)) {
if (PS(use_trans_sid) && !PS(use_only_cookies)) {
PS(apply_trans_sid) = 1;
}
PS(send_cookie) = 0;
}
php_session_reset_id(TSRMLS_C);
PS(session_status) = php_session_active;
php_session_cache_limiter(TSRMLS_C);
if ((PS(mod_data) || PS(mod_user_implemented)) && PS(gc_probability) > 0) {
int nrdels = -1;
nrand = (int) ((float) PS(gc_divisor) * php_combined_lcg(TSRMLS_C));
if (nrand < PS(gc_probability)) {
PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &nrdels TSRMLS_CC);
#ifdef SESSION_DEBUG
if (nrdels != -1) {
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "purged %d expired session objects", nrdels);
}
#endif
}
}
}
/* }}} */
static void php_session_flush(TSRMLS_D) /* {{{ */
{
if (PS(session_status) == php_session_active) {
PS(session_status) = php_session_none;
zend_try {
php_session_save_current_state(TSRMLS_C);
} zend_end_try();
}
}
/* }}} */
PHPAPI void session_adapt_url(const char *url, size_t urllen, char **new, size_t *newlen TSRMLS_DC) /* {{{ */
{
if (PS(apply_trans_sid) && (PS(session_status) == php_session_active)) {
*new = php_url_scanner_adapt_single_url(url, urllen, PS(session_name), PS(id), newlen TSRMLS_CC);
}
}
/* }}} */
/* ********************************
* Userspace exported functions *
******************************** */
/* {{{ proto void session_set_cookie_params(int lifetime [, string path [, string domain [, bool secure[, bool httponly]]]])
Set session cookie parameters */
static PHP_FUNCTION(session_set_cookie_params)
{
zval **lifetime = NULL;
char *path = NULL, *domain = NULL;
int path_len, domain_len, argc = ZEND_NUM_ARGS();
zend_bool secure = 0, httponly = 0;
if (!PS(use_cookies) ||
zend_parse_parameters(argc TSRMLS_CC, "Z|ssbb", &lifetime, &path, &path_len, &domain, &domain_len, &secure, &httponly) == FAILURE) {
return;
}
convert_to_string_ex(lifetime);
zend_alter_ini_entry("session.cookie_lifetime", sizeof("session.cookie_lifetime"), Z_STRVAL_PP(lifetime), Z_STRLEN_PP(lifetime), PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
if (path) {
zend_alter_ini_entry("session.cookie_path", sizeof("session.cookie_path"), path, path_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
if (domain) {
zend_alter_ini_entry("session.cookie_domain", sizeof("session.cookie_domain"), domain, domain_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
if (argc > 3) {
zend_alter_ini_entry("session.cookie_secure", sizeof("session.cookie_secure"), secure ? "1" : "0", 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
if (argc > 4) {
zend_alter_ini_entry("session.cookie_httponly", sizeof("session.cookie_httponly"), httponly ? "1" : "0", 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ proto array session_get_cookie_params(void)
Return the session cookie parameters */
static PHP_FUNCTION(session_get_cookie_params)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
array_init(return_value);
add_assoc_long(return_value, "lifetime", PS(cookie_lifetime));
add_assoc_string(return_value, "path", PS(cookie_path), 1);
add_assoc_string(return_value, "domain", PS(cookie_domain), 1);
add_assoc_bool(return_value, "secure", PS(cookie_secure));
add_assoc_bool(return_value, "httponly", PS(cookie_httponly));
}
/* }}} */
/* {{{ proto string session_name([string newname])
Return the current session name. If newname is given, the session name is replaced with newname */
static PHP_FUNCTION(session_name)
{
char *name = NULL;
int name_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &name, &name_len) == FAILURE) {
return;
}
RETVAL_STRING(PS(session_name), 1);
if (name) {
zend_alter_ini_entry("session.name", sizeof("session.name"), name, name_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ proto string session_module_name([string newname])
Return the current module name used for accessing session data. If newname is given, the module name is replaced with newname */
static PHP_FUNCTION(session_module_name)
{
char *name = NULL;
int name_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &name, &name_len) == FAILURE) {
return;
}
/* Set return_value to current module name */
if (PS(mod) && PS(mod)->s_name) {
RETVAL_STRING(safe_estrdup(PS(mod)->s_name), 0);
} else {
RETVAL_EMPTY_STRING();
}
if (name) {
if (!_php_find_ps_module(name TSRMLS_CC)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot find named PHP session module (%s)", name);
zval_dtor(return_value);
RETURN_FALSE;
}
if (PS(mod_data) || PS(mod_user_implemented)) {
PS(mod)->s_close(&PS(mod_data) TSRMLS_CC);
}
PS(mod_data) = NULL;
zend_alter_ini_entry("session.save_handler", sizeof("session.save_handler"), name, name_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ proto void session_set_save_handler(string open, string close, string read, string write, string destroy, string gc)
Sets user-level functions */
static PHP_FUNCTION(session_set_save_handler)
{
zval ***args = NULL;
int i, num_args, argc = ZEND_NUM_ARGS();
char *name;
if (PS(session_status) != php_session_none) {
RETURN_FALSE;
}
if (argc != 1 && argc != 2 && argc != 6) {
WRONG_PARAM_COUNT;
}
if (argc <= 2) {
zval *obj = NULL, *callback = NULL;
zend_uint func_name_len;
char *func_name;
HashPosition pos;
zend_function *default_mptr, *current_mptr;
ulong func_index;
php_shutdown_function_entry shutdown_function_entry;
zend_bool register_shutdown = 1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O|b", &obj, php_session_class_entry, &register_shutdown) == FAILURE) {
return;
}
/* Find implemented methods */
zend_hash_internal_pointer_reset_ex(&php_session_class_entry->function_table, &pos);
i = 0;
while (zend_hash_get_current_data_ex(&php_session_class_entry->function_table, (void **) &default_mptr, &pos) == SUCCESS) {
zend_hash_get_current_key_ex(&php_session_class_entry->function_table, &func_name, &func_name_len, &func_index, 0, &pos);
if (zend_hash_find(&Z_OBJCE_P(obj)->function_table, func_name, func_name_len, (void **)&current_mptr) == SUCCESS) {
if (PS(mod_user_names).names[i] != NULL) {
zval_ptr_dtor(&PS(mod_user_names).names[i]);
}
MAKE_STD_ZVAL(callback);
array_init_size(callback, 2);
Z_ADDREF_P(obj);
add_next_index_zval(callback, obj);
add_next_index_stringl(callback, func_name, func_name_len - 1, 1);
PS(mod_user_names).names[i] = callback;
} else {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Session handler's function table is corrupt");
RETURN_FALSE;
}
zend_hash_move_forward_ex(&php_session_class_entry->function_table, &pos);
++i;
}
if (register_shutdown) {
/* create shutdown function */
shutdown_function_entry.arg_count = 1;
shutdown_function_entry.arguments = (zval **) safe_emalloc(sizeof(zval *), 1, 0);
MAKE_STD_ZVAL(callback);
ZVAL_STRING(callback, "session_register_shutdown", 1);
shutdown_function_entry.arguments[0] = callback;
/* add shutdown function, removing the old one if it exists */
if (!register_user_shutdown_function("session_shutdown", sizeof("session_shutdown"), &shutdown_function_entry TSRMLS_CC)) {
zval_ptr_dtor(&callback);
efree(shutdown_function_entry.arguments);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to register session shutdown function");
RETURN_FALSE;
}
} else {
/* remove shutdown function */
remove_user_shutdown_function("session_shutdown", sizeof("session_shutdown") TSRMLS_CC);
}
if (PS(mod) && PS(session_status) == php_session_none && PS(mod) != &ps_mod_user) {
zend_alter_ini_entry("session.save_handler", sizeof("session.save_handler"), "user", sizeof("user")-1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
RETURN_TRUE;
}
if (zend_parse_parameters(argc TSRMLS_CC, "+", &args, &num_args) == FAILURE) {
return;
}
/* remove shutdown function */
remove_user_shutdown_function("session_shutdown", sizeof("session_shutdown") TSRMLS_CC);
for (i = 0; i < 6; i++) {
if (!zend_is_callable(*args[i], 0, &name TSRMLS_CC)) {
efree(args);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Argument %d is not a valid callback", i+1);
efree(name);
RETURN_FALSE;
}
efree(name);
}
if (PS(mod) && PS(mod) != &ps_mod_user) {
zend_alter_ini_entry("session.save_handler", sizeof("session.save_handler"), "user", sizeof("user")-1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
for (i = 0; i < 6; i++) {
if (PS(mod_user_names).names[i] != NULL) {
zval_ptr_dtor(&PS(mod_user_names).names[i]);
}
Z_ADDREF_PP(args[i]);
PS(mod_user_names).names[i] = *args[i];
}
efree(args);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto string session_save_path([string newname])
Return the current save path passed to module_name. If newname is given, the save path is replaced with newname */
static PHP_FUNCTION(session_save_path)
{
char *name = NULL;
int name_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &name, &name_len) == FAILURE) {
return;
}
RETVAL_STRING(PS(save_path), 1);
if (name) {
if (memchr(name, '\0', name_len) != NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "The save_path cannot contain NULL characters");
zval_dtor(return_value);
RETURN_FALSE;
}
zend_alter_ini_entry("session.save_path", sizeof("session.save_path"), name, name_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ proto string session_id([string newid])
Return the current session id. If newid is given, the session id is replaced with newid */
static PHP_FUNCTION(session_id)
{
char *name = NULL;
int name_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &name, &name_len) == FAILURE) {
return;
}
if (PS(id)) {
RETVAL_STRING(PS(id), 1);
} else {
RETVAL_EMPTY_STRING();
}
if (name) {
if (PS(id)) {
efree(PS(id));
}
PS(id) = estrndup(name, name_len);
}
}
/* }}} */
/* {{{ proto bool session_regenerate_id([bool delete_old_session])
Update the current session id with a newly generated one. If delete_old_session is set to true, remove the old session. */
static PHP_FUNCTION(session_regenerate_id)
{
zend_bool del_ses = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &del_ses) == FAILURE) {
return;
}
if (SG(headers_sent) && PS(use_cookies)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot regenerate session id - headers already sent");
RETURN_FALSE;
}
if (PS(session_status) == php_session_active) {
if (PS(id)) {
if (del_ses && PS(mod)->s_destroy(&PS(mod_data), PS(id) TSRMLS_CC) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Session object destruction failed");
RETURN_FALSE;
}
efree(PS(id));
PS(id) = NULL;
}
PS(id) = PS(mod)->s_create_sid(&PS(mod_data), NULL TSRMLS_CC);
PS(send_cookie) = 1;
php_session_reset_id(TSRMLS_C);
RETURN_TRUE;
}
RETURN_FALSE;
}
/* }}} */
/* {{{ proto string session_cache_limiter([string new_cache_limiter])
Return the current cache limiter. If new_cache_limited is given, the current cache_limiter is replaced with new_cache_limiter */
static PHP_FUNCTION(session_cache_limiter)
{
char *limiter = NULL;
int limiter_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &limiter, &limiter_len) == FAILURE) {
return;
}
RETVAL_STRING(PS(cache_limiter), 1);
if (limiter) {
zend_alter_ini_entry("session.cache_limiter", sizeof("session.cache_limiter"), limiter, limiter_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ proto int session_cache_expire([int new_cache_expire])
Return the current cache expire. If new_cache_expire is given, the current cache_expire is replaced with new_cache_expire */
static PHP_FUNCTION(session_cache_expire)
{
zval **expires = NULL;
int argc = ZEND_NUM_ARGS();
if (zend_parse_parameters(argc TSRMLS_CC, "|Z", &expires) == FAILURE) {
return;
}
RETVAL_LONG(PS(cache_expire));
if (argc == 1) {
convert_to_string_ex(expires);
zend_alter_ini_entry("session.cache_expire", sizeof("session.cache_expire"), Z_STRVAL_PP(expires), Z_STRLEN_PP(expires), ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ proto string session_encode(void)
Serializes the current setup and returns the serialized representation */
static PHP_FUNCTION(session_encode)
{
int len;
char *enc;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
enc = php_session_encode(&len TSRMLS_CC);
if (enc == NULL) {
RETURN_FALSE;
}
RETVAL_STRINGL(enc, len, 0);
}
/* }}} */
/* {{{ proto bool session_decode(string data)
Deserializes data and reinitializes the variables */
static PHP_FUNCTION(session_decode)
{
char *str;
int str_len;
if (PS(session_status) == php_session_none) {
RETURN_FALSE;
}
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &str, &str_len) == FAILURE) {
return;
}
php_session_decode(str, str_len TSRMLS_CC);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool session_start(void)
Begin session - reinitializes freezed variables, registers browsers etc */
static PHP_FUNCTION(session_start)
{
/* skipping check for non-zero args for performance reasons here ?*/
php_session_start(TSRMLS_C);
if (PS(session_status) != php_session_active) {
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool session_destroy(void)
Destroy the current session and all data associated with it */
static PHP_FUNCTION(session_destroy)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
RETURN_BOOL(php_session_destroy(TSRMLS_C) == SUCCESS);
}
/* }}} */
/* {{{ proto void session_unset(void)
Unset all registered variables */
static PHP_FUNCTION(session_unset)
{
if (PS(session_status) == php_session_none) {
RETURN_FALSE;
}
IF_SESSION_VARS() {
HashTable *ht_sess_var;
SEPARATE_ZVAL_IF_NOT_REF(&PS(http_session_vars));
ht_sess_var = Z_ARRVAL_P(PS(http_session_vars));
/* Clean $_SESSION. */
zend_hash_clean(ht_sess_var);
}
}
/* }}} */
/* {{{ proto void session_write_close(void)
Write session data and end session */
static PHP_FUNCTION(session_write_close)
{
php_session_flush(TSRMLS_C);
}
/* }}} */
/* {{{ proto int session_status(void)
Returns the current session status */
static PHP_FUNCTION(session_status)
{
if (zend_parse_parameters_none() == FAILURE) {
return;
}
RETURN_LONG(PS(session_status));
}
/* }}} */
/* {{{ proto void session_register_shutdown(void)
Registers session_write_close() as a shutdown function */
static PHP_FUNCTION(session_register_shutdown)
{
php_shutdown_function_entry shutdown_function_entry;
zval *callback;
/* This function is registered itself as a shutdown function by
* session_set_save_handler($obj). The reason we now register another
* shutdown function is in case the user registered their own shutdown
* function after calling session_set_save_handler(), which expects
* the session still to be available.
*/
shutdown_function_entry.arg_count = 1;
shutdown_function_entry.arguments = (zval **) safe_emalloc(sizeof(zval *), 1, 0);
MAKE_STD_ZVAL(callback);
ZVAL_STRING(callback, "session_write_close", 1);
shutdown_function_entry.arguments[0] = callback;
if (!append_user_shutdown_function(shutdown_function_entry TSRMLS_CC)) {
zval_ptr_dtor(&callback);
efree(shutdown_function_entry.arguments);
/* Unable to register shutdown function, presumably because of lack
* of memory, so flush the session now. It would be done in rshutdown
* anyway but the handler will have had it's dtor called by then.
* If the user does have a later shutdown function which needs the
* session then tough luck.
*/
php_session_flush(TSRMLS_C);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to register session flush function");
}
}
/* }}} */
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_name, 0, 0, 0)
ZEND_ARG_INFO(0, name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_module_name, 0, 0, 0)
ZEND_ARG_INFO(0, module)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_save_path, 0, 0, 0)
ZEND_ARG_INFO(0, path)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_id, 0, 0, 0)
ZEND_ARG_INFO(0, id)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_regenerate_id, 0, 0, 0)
ZEND_ARG_INFO(0, delete_old_session)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_decode, 0, 0, 1)
ZEND_ARG_INFO(0, data)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_void, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_set_save_handler, 0, 0, 6)
ZEND_ARG_INFO(0, open)
ZEND_ARG_INFO(0, close)
ZEND_ARG_INFO(0, read)
ZEND_ARG_INFO(0, write)
ZEND_ARG_INFO(0, destroy)
ZEND_ARG_INFO(0, gc)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_cache_limiter, 0, 0, 0)
ZEND_ARG_INFO(0, cache_limiter)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_cache_expire, 0, 0, 0)
ZEND_ARG_INFO(0, new_cache_expire)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_session_set_cookie_params, 0, 0, 1)
ZEND_ARG_INFO(0, lifetime)
ZEND_ARG_INFO(0, path)
ZEND_ARG_INFO(0, domain)
ZEND_ARG_INFO(0, secure)
ZEND_ARG_INFO(0, httponly)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_class_open, 0)
ZEND_ARG_INFO(0, save_path)
ZEND_ARG_INFO(0, session_name)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_class_close, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_class_read, 0)
ZEND_ARG_INFO(0, key)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_class_write, 0)
ZEND_ARG_INFO(0, key)
ZEND_ARG_INFO(0, val)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_class_destroy, 0)
ZEND_ARG_INFO(0, key)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_session_class_gc, 0)
ZEND_ARG_INFO(0, maxlifetime)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ session_functions[]
*/
static const zend_function_entry session_functions[] = {
PHP_FE(session_name, arginfo_session_name)
PHP_FE(session_module_name, arginfo_session_module_name)
PHP_FE(session_save_path, arginfo_session_save_path)
PHP_FE(session_id, arginfo_session_id)
PHP_FE(session_regenerate_id, arginfo_session_regenerate_id)
PHP_FE(session_decode, arginfo_session_decode)
PHP_FE(session_encode, arginfo_session_void)
PHP_FE(session_start, arginfo_session_void)
PHP_FE(session_destroy, arginfo_session_void)
PHP_FE(session_unset, arginfo_session_void)
PHP_FE(session_set_save_handler, arginfo_session_set_save_handler)
PHP_FE(session_cache_limiter, arginfo_session_cache_limiter)
PHP_FE(session_cache_expire, arginfo_session_cache_expire)
PHP_FE(session_set_cookie_params, arginfo_session_set_cookie_params)
PHP_FE(session_get_cookie_params, arginfo_session_void)
PHP_FE(session_write_close, arginfo_session_void)
PHP_FE(session_status, arginfo_session_void)
PHP_FE(session_register_shutdown, arginfo_session_void)
PHP_FALIAS(session_commit, session_write_close, arginfo_session_void)
PHP_FE_END
};
/* }}} */
/* {{{ session class functions[]
*/
static const zend_function_entry php_session_class_functions[] = {
PHP_ME(SessionHandler, open, arginfo_session_class_open, ZEND_ACC_PUBLIC)
PHP_ME(SessionHandler, close, arginfo_session_class_close, ZEND_ACC_PUBLIC)
PHP_ME(SessionHandler, read, arginfo_session_class_read, ZEND_ACC_PUBLIC)
PHP_ME(SessionHandler, write, arginfo_session_class_write, ZEND_ACC_PUBLIC)
PHP_ME(SessionHandler, destroy, arginfo_session_class_destroy, ZEND_ACC_PUBLIC)
PHP_ME(SessionHandler, gc, arginfo_session_class_gc, ZEND_ACC_PUBLIC)
{ NULL, NULL, NULL }
};
/* }}} */
/* ********************************
* Module Setup and Destruction *
******************************** */
static int php_rinit_session(zend_bool auto_start TSRMLS_DC) /* {{{ */
{
php_rinit_session_globals(TSRMLS_C);
if (PS(mod) == NULL) {
char *value;
value = zend_ini_string("session.save_handler", sizeof("session.save_handler"), 0);
if (value) {
PS(mod) = _php_find_ps_module(value TSRMLS_CC);
}
}
if (PS(serializer) == NULL) {
char *value;
value = zend_ini_string("session.serialize_handler", sizeof("session.serialize_handler"), 0);
if (value) {
PS(serializer) = _php_find_ps_serializer(value TSRMLS_CC);
}
}
if (PS(mod) == NULL || PS(serializer) == NULL) {
/* current status is unusable */
PS(session_status) = php_session_disabled;
return SUCCESS;
}
if (auto_start) {
php_session_start(TSRMLS_C);
}
return SUCCESS;
} /* }}} */
static PHP_RINIT_FUNCTION(session) /* {{{ */
{
return php_rinit_session(PS(auto_start) TSRMLS_CC);
}
/* }}} */
static PHP_RSHUTDOWN_FUNCTION(session) /* {{{ */
{
int i;
php_session_flush(TSRMLS_C);
php_rshutdown_session_globals(TSRMLS_C);
/* this should NOT be done in php_rshutdown_session_globals() */
for (i = 0; i < 6; i++) {
if (PS(mod_user_names).names[i] != NULL) {
zval_ptr_dtor(&PS(mod_user_names).names[i]);
PS(mod_user_names).names[i] = NULL;
}
}
return SUCCESS;
}
/* }}} */
static PHP_GINIT_FUNCTION(ps) /* {{{ */
{
int i;
ps_globals->save_path = NULL;
ps_globals->session_name = NULL;
ps_globals->id = NULL;
ps_globals->mod = NULL;
ps_globals->serializer = NULL;
ps_globals->mod_data = NULL;
ps_globals->session_status = php_session_none;
ps_globals->default_mod = NULL;
ps_globals->mod_user_implemented = 0;
ps_globals->mod_user_is_open = 0;
for (i = 0; i < 6; i++) {
ps_globals->mod_user_names.names[i] = NULL;
}
ps_globals->http_session_vars = NULL;
}
/* }}} */
static PHP_MINIT_FUNCTION(session) /* {{{ */
{
zend_class_entry ce;
zend_register_auto_global("_SESSION", sizeof("_SESSION")-1, 0, NULL TSRMLS_CC);
PS(module_number) = module_number; /* if we really need this var we need to init it in zts mode as well! */
PS(session_status) = php_session_none;
REGISTER_INI_ENTRIES();
#ifdef HAVE_LIBMM
PHP_MINIT(ps_mm) (INIT_FUNC_ARGS_PASSTHRU);
#endif
php_session_rfc1867_orig_callback = php_rfc1867_callback;
php_rfc1867_callback = php_session_rfc1867_callback;
/* Register base class */
INIT_CLASS_ENTRY(ce, PS_CLASS_NAME, php_session_class_functions);
php_session_class_entry = zend_register_internal_class(&ce TSRMLS_CC);
REGISTER_LONG_CONSTANT("PHP_SESSION_DISABLED", php_session_disabled, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHP_SESSION_NONE", php_session_none, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PHP_SESSION_ACTIVE", php_session_active, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
/* }}} */
static PHP_MSHUTDOWN_FUNCTION(session) /* {{{ */
{
UNREGISTER_INI_ENTRIES();
#ifdef HAVE_LIBMM
PHP_MSHUTDOWN(ps_mm) (SHUTDOWN_FUNC_ARGS_PASSTHRU);
#endif
ps_serializers[PREDEFINED_SERIALIZERS].name = NULL;
memset(&ps_modules[PREDEFINED_MODULES], 0, (MAX_MODULES-PREDEFINED_MODULES)*sizeof(ps_module *));
return SUCCESS;
}
/* }}} */
static PHP_MINFO_FUNCTION(session) /* {{{ */
{
ps_module **mod;
ps_serializer *ser;
smart_str save_handlers = {0};
smart_str ser_handlers = {0};
int i;
/* Get save handlers */
for (i = 0, mod = ps_modules; i < MAX_MODULES; i++, mod++) {
if (*mod && (*mod)->s_name) {
smart_str_appends(&save_handlers, (*mod)->s_name);
smart_str_appendc(&save_handlers, ' ');
}
}
/* Get serializer handlers */
for (i = 0, ser = ps_serializers; i < MAX_SERIALIZERS; i++, ser++) {
if (ser && ser->name) {
smart_str_appends(&ser_handlers, ser->name);
smart_str_appendc(&ser_handlers, ' ');
}
}
php_info_print_table_start();
php_info_print_table_row(2, "Session Support", "enabled" );
if (save_handlers.c) {
smart_str_0(&save_handlers);
php_info_print_table_row(2, "Registered save handlers", save_handlers.c);
smart_str_free(&save_handlers);
} else {
php_info_print_table_row(2, "Registered save handlers", "none");
}
if (ser_handlers.c) {
smart_str_0(&ser_handlers);
php_info_print_table_row(2, "Registered serializer handlers", ser_handlers.c);
smart_str_free(&ser_handlers);
} else {
php_info_print_table_row(2, "Registered serializer handlers", "none");
}
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
/* }}} */
static const zend_module_dep session_deps[] = { /* {{{ */
ZEND_MOD_OPTIONAL("hash")
ZEND_MOD_REQUIRED("spl")
ZEND_MOD_END
};
/* }}} */
/* ************************
* Upload hook handling *
************************ */
static zend_bool early_find_sid_in(zval *dest, int where, php_session_rfc1867_progress *progress TSRMLS_DC) /* {{{ */
{
zval **ppid;
if (!PG(http_globals)[where]) {
return 0;
}
if (zend_hash_find(Z_ARRVAL_P(PG(http_globals)[where]), PS(session_name), progress->sname_len+1, (void **)&ppid) == SUCCESS
&& Z_TYPE_PP(ppid) == IS_STRING) {
zval_dtor(dest);
ZVAL_ZVAL(dest, *ppid, 1, 0);
return 1;
}
return 0;
} /* }}} */
static void php_session_rfc1867_early_find_sid(php_session_rfc1867_progress *progress TSRMLS_DC) /* {{{ */
{
if (PS(use_cookies)) {
sapi_module.treat_data(PARSE_COOKIE, NULL, NULL TSRMLS_CC);
if (early_find_sid_in(&progress->sid, TRACK_VARS_COOKIE, progress TSRMLS_CC)) {
progress->apply_trans_sid = 0;
return;
}
}
if (PS(use_only_cookies)) {
return;
}
sapi_module.treat_data(PARSE_GET, NULL, NULL TSRMLS_CC);
early_find_sid_in(&progress->sid, TRACK_VARS_GET, progress TSRMLS_CC);
} /* }}} */
static zend_bool php_check_cancel_upload(php_session_rfc1867_progress *progress TSRMLS_DC) /* {{{ */
{
zval **progress_ary, **cancel_upload;
if (zend_symtable_find(Z_ARRVAL_P(PS(http_session_vars)), progress->key.c, progress->key.len+1, (void**)&progress_ary) != SUCCESS) {
return 0;
}
if (Z_TYPE_PP(progress_ary) != IS_ARRAY) {
return 0;
}
if (zend_hash_find(Z_ARRVAL_PP(progress_ary), "cancel_upload", sizeof("cancel_upload"), (void**)&cancel_upload) != SUCCESS) {
return 0;
}
return Z_TYPE_PP(cancel_upload) == IS_BOOL && Z_LVAL_PP(cancel_upload);
} /* }}} */
static void php_session_rfc1867_update(php_session_rfc1867_progress *progress, int force_update TSRMLS_DC) /* {{{ */
{
if (!force_update) {
if (Z_LVAL_P(progress->post_bytes_processed) < progress->next_update) {
return;
}
#ifdef HAVE_GETTIMEOFDAY
if (PS(rfc1867_min_freq) > 0.0) {
struct timeval tv = {0};
double dtv;
gettimeofday(&tv, NULL);
dtv = (double) tv.tv_sec + tv.tv_usec / 1000000.0;
if (dtv < progress->next_update_time) {
return;
}
progress->next_update_time = dtv + PS(rfc1867_min_freq);
}
#endif
progress->next_update = Z_LVAL_P(progress->post_bytes_processed) + progress->update_step;
}
php_session_initialize(TSRMLS_C);
PS(session_status) = php_session_active;
IF_SESSION_VARS() {
progress->cancel_upload = php_check_cancel_upload(progress TSRMLS_CC);
ZEND_SET_SYMBOL_WITH_LENGTH(Z_ARRVAL_P(PS(http_session_vars)), progress->key.c, progress->key.len+1, progress->data, 2, 0);
}
php_session_flush(TSRMLS_C);
} /* }}} */
static void php_session_rfc1867_cleanup(php_session_rfc1867_progress *progress TSRMLS_DC) /* {{{ */
{
php_session_initialize(TSRMLS_C);
PS(session_status) = php_session_active;
IF_SESSION_VARS() {
zend_hash_del(Z_ARRVAL_P(PS(http_session_vars)), progress->key.c, progress->key.len+1);
}
php_session_flush(TSRMLS_C);
} /* }}} */
static int php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra TSRMLS_DC) /* {{{ */
{
php_session_rfc1867_progress *progress;
int retval = SUCCESS;
if (php_session_rfc1867_orig_callback) {
retval = php_session_rfc1867_orig_callback(event, event_data, extra TSRMLS_CC);
}
if (!PS(rfc1867_enabled)) {
return retval;
}
progress = PS(rfc1867_progress);
switch(event) {
case MULTIPART_EVENT_START: {
multipart_event_start *data = (multipart_event_start *) event_data;
progress = ecalloc(1, sizeof(php_session_rfc1867_progress));
progress->content_length = data->content_length;
progress->sname_len = strlen(PS(session_name));
PS(rfc1867_progress) = progress;
}
break;
case MULTIPART_EVENT_FORMDATA: {
multipart_event_formdata *data = (multipart_event_formdata *) event_data;
size_t value_len;
if (Z_TYPE(progress->sid) && progress->key.c) {
break;
}
/* orig callback may have modified *data->newlength */
if (data->newlength) {
value_len = *data->newlength;
} else {
value_len = data->length;
}
if (data->name && data->value && value_len) {
size_t name_len = strlen(data->name);
if (name_len == progress->sname_len && memcmp(data->name, PS(session_name), name_len) == 0) {
zval_dtor(&progress->sid);
ZVAL_STRINGL(&progress->sid, (*data->value), value_len, 1);
} else if (name_len == PS(rfc1867_name).len && memcmp(data->name, PS(rfc1867_name).c, name_len) == 0) {
smart_str_free(&progress->key);
smart_str_appendl(&progress->key, PS(rfc1867_prefix).c, PS(rfc1867_prefix).len);
smart_str_appendl(&progress->key, *data->value, value_len);
smart_str_0(&progress->key);
progress->apply_trans_sid = PS(use_trans_sid);
php_session_rfc1867_early_find_sid(progress TSRMLS_CC);
}
}
}
break;
case MULTIPART_EVENT_FILE_START: {
multipart_event_file_start *data = (multipart_event_file_start *) event_data;
/* Do nothing when $_POST["PHP_SESSION_UPLOAD_PROGRESS"] is not set
* or when we have no session id */
if (!Z_TYPE(progress->sid) || !progress->key.c) {
break;
}
/* First FILE_START event, initializing data */
if (!progress->data) {
if (PS(rfc1867_freq) >= 0) {
progress->update_step = PS(rfc1867_freq);
} else if (PS(rfc1867_freq) < 0) { /* % of total size */
progress->update_step = progress->content_length * -PS(rfc1867_freq) / 100;
}
progress->next_update = 0;
progress->next_update_time = 0.0;
ALLOC_INIT_ZVAL(progress->data);
array_init(progress->data);
ALLOC_INIT_ZVAL(progress->post_bytes_processed);
ZVAL_LONG(progress->post_bytes_processed, data->post_bytes_processed);
ALLOC_INIT_ZVAL(progress->files);
array_init(progress->files);
add_assoc_long_ex(progress->data, "start_time", sizeof("start_time"), (long)sapi_get_request_time(TSRMLS_C));
add_assoc_long_ex(progress->data, "content_length", sizeof("content_length"), progress->content_length);
add_assoc_zval_ex(progress->data, "bytes_processed", sizeof("bytes_processed"), progress->post_bytes_processed);
add_assoc_bool_ex(progress->data, "done", sizeof("done"), 0);
add_assoc_zval_ex(progress->data, "files", sizeof("files"), progress->files);
php_rinit_session(0 TSRMLS_CC);
PS(id) = estrndup(Z_STRVAL(progress->sid), Z_STRLEN(progress->sid));
PS(apply_trans_sid) = progress->apply_trans_sid;
PS(send_cookie) = 0;
}
ALLOC_INIT_ZVAL(progress->current_file);
array_init(progress->current_file);
ALLOC_INIT_ZVAL(progress->current_file_bytes_processed);
ZVAL_LONG(progress->current_file_bytes_processed, 0);
/* Each uploaded file has its own array. Trying to make it close to $_FILES entries. */
add_assoc_string_ex(progress->current_file, "field_name", sizeof("field_name"), data->name, 1);
add_assoc_string_ex(progress->current_file, "name", sizeof("name"), *data->filename, 1);
add_assoc_null_ex(progress->current_file, "tmp_name", sizeof("tmp_name"));
add_assoc_long_ex(progress->current_file, "error", sizeof("error"), 0);
add_assoc_bool_ex(progress->current_file, "done", sizeof("done"), 0);
add_assoc_long_ex(progress->current_file, "start_time", sizeof("start_time"), (long)time(NULL));
add_assoc_zval_ex(progress->current_file, "bytes_processed", sizeof("bytes_processed"), progress->current_file_bytes_processed);
add_next_index_zval(progress->files, progress->current_file);
Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
php_session_rfc1867_update(progress, 0 TSRMLS_CC);
}
break;
case MULTIPART_EVENT_FILE_DATA: {
multipart_event_file_data *data = (multipart_event_file_data *) event_data;
if (!Z_TYPE(progress->sid) || !progress->key.c) {
break;
}
Z_LVAL_P(progress->current_file_bytes_processed) = data->offset + data->length;
Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
php_session_rfc1867_update(progress, 0 TSRMLS_CC);
}
break;
case MULTIPART_EVENT_FILE_END: {
multipart_event_file_end *data = (multipart_event_file_end *) event_data;
if (!Z_TYPE(progress->sid) || !progress->key.c) {
break;
}
if (data->temp_filename) {
add_assoc_string_ex(progress->current_file, "tmp_name", sizeof("tmp_name"), data->temp_filename, 1);
}
add_assoc_long_ex(progress->current_file, "error", sizeof("error"), data->cancel_upload);
add_assoc_bool_ex(progress->current_file, "done", sizeof("done"), 1);
Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
php_session_rfc1867_update(progress, 0 TSRMLS_CC);
}
break;
case MULTIPART_EVENT_END: {
multipart_event_end *data = (multipart_event_end *) event_data;
if (Z_TYPE(progress->sid) && progress->key.c) {
if (PS(rfc1867_cleanup)) {
php_session_rfc1867_cleanup(progress TSRMLS_CC);
} else {
add_assoc_bool_ex(progress->data, "done", sizeof("done"), 1);
Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
php_session_rfc1867_update(progress, 1 TSRMLS_CC);
}
php_rshutdown_session_globals(TSRMLS_C);
}
if (progress->data) {
zval_ptr_dtor(&progress->data);
}
zval_dtor(&progress->sid);
smart_str_free(&progress->key);
efree(progress);
progress = NULL;
PS(rfc1867_progress) = NULL;
}
break;
}
if (progress && progress->cancel_upload) {
return FAILURE;
}
return retval;
} /* }}} */
zend_module_entry session_module_entry = {
STANDARD_MODULE_HEADER_EX,
NULL,
session_deps,
"session",
session_functions,
PHP_MINIT(session), PHP_MSHUTDOWN(session),
PHP_RINIT(session), PHP_RSHUTDOWN(session),
PHP_MINFO(session),
NO_VERSION_YET,
PHP_MODULE_GLOBALS(ps),
PHP_GINIT(ps),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
#ifdef COMPILE_DL_SESSION
ZEND_GET_MODULE(session)
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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