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03a3291262
php-src/ext/session/session.c
Antony Dovgal 03a3291262 MFB
2007-03-19 08:24:17 +00:00

1942 lines
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2007 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 |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Sascha Schumann <sascha@schumann.cx> |
| Andrei Zmievski <andrei@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#ifdef PHP_WIN32
#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 "php_session.h"
#include "ext/standard/md5.h"
#include "ext/standard/sha1.h"
#include "ext/standard/php_var.h"
#include "ext/standard/datetime.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 "mod_files.h"
#include "mod_user.h"
#ifdef HAVE_LIBMM
#include "mod_mm.h"
#endif
PHPAPI ZEND_DECLARE_MODULE_GLOBALS(ps);
/* ***********
* Helpers *
*********** */
#ifdef NETWARE
# define SESS_SB_MTIME(sb) ((sb).st_mtime.tv_sec)
#else
# define SESS_SB_MTIME(sb) ((sb).st_mtime)
#endif
#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(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;
}
if (PS(mod_data)) {
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_rt_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);
}
}
/* BC? */
PHPAPI void php_set_session_var(char *name, size_t namelen, zval *state_val, php_unserialize_data_t *var_hash TSRMLS_DC)
{
zend_utf8_hash_update(Z_ARRVAL_P(PS(http_session_vars)), name, namelen + 1, &state_val, sizeof(zval *), NULL);
zval_add_ref(&state_val);
}
PHPAPI int php_get_session_var(char *name, size_t namelen, zval ***state_var TSRMLS_DC)
{
int ret = FAILURE;
IF_SESSION_VARS() {
ret = zend_rt_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 arrays -- 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;
}
#define PS_ID_INITIAL_SIZE 100
PHPAPI char *php_session_create_id(PS_CREATE_SID_ARGS)
{
PHP_MD5_CTX md5_context;
PHP_SHA1_CTX sha1_context;
#ifdef HAVE_HASH_EXT
void *hash_context;
#endif
unsigned char *digest;
int digest_len;
int j;
char *buf;
struct timeval tv;
zval **array;
zval **token;
char *remote_addr = NULL;
gettimeofday(&tv, NULL);
if (zend_ascii_hash_find(&EG(symbol_table), "_SERVER",
sizeof("_SERVER"), (void **) &array) == SUCCESS &&
Z_TYPE_PP(array) == IS_ARRAY &&
zend_ascii_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;
#ifdef HAVE_HASH_EXT
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;
}
if (PS(entropy_length) > 0) {
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;
#ifdef HAVE_HASH_EXT
case PS_HASH_FUNC_OTHER:
PS(hash_ops)->hash_update(hash_context, rbuf, n);
break;
#endif /* HAVE_HASH_EXT */
}
to_read -= n;
}
close(fd);
}
}
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;
#ifdef HAVE_HASH_EXT
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");
}
if (PS_ID_INITIAL_SIZE < ((digest_len + 2) * (8 / PS(hash_bits_per_character))) ) {
/* 100 bytes is enough for most, but not all hash algos */
buf = erealloc(buf, (digest_len + 2) * (8 / PS(hash_bits_per_character)) );
}
j = (int) (bin_to_readable((char *)digest, digest_len, buf, PS(hash_bits_per_character)) - buf);
efree(digest);
if (newlen) {
*newlen = j;
}
return buf;
}
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)) {
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)->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;
}
php_error_docref(NULL TSRMLS_CC, err_type, "Cannot find save handler %s", new_value);
return FAILURE;
}
PS(mod) = 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(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;
}
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(OnUpdateSaveDir)
{
/* Only do the safemode/open_basedir check at runtime */
if (stage == PHP_INI_STAGE_RUNTIME) {
char *p;
if (memchr(new_value, '\0', new_value_length) != NULL) {
return FAILURE;
}
if ((p = zend_memrchr(new_value, ';', new_value_length))) {
p++;
} else {
p = new_value;
}
if (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;
#ifdef HAVE_HASH_EXT
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;
}
#ifdef HAVE_HASH_EXT
{
php_hash_ops *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;
}
/* {{{ 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)
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)
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)
/* 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_UENCODE_LOOP(
if (key_length > PS_BIN_MAX || key_type != HASH_KEY_IS_STRING) continue;
if (struc) {
smart_str_appendc(&buf, (unsigned char)key_length );
smart_str_appendl(&buf, key.s, key_length);
php_var_serialize(&buf, struc, &var_hash TSRMLS_CC);
} else {
smart_str_appendc(&buf, (unsigned char)key_length | PS_BIN_UNDEF);
smart_str_appendl(&buf, key.s, 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 > 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)) {
zend_utf8_hash_update(Z_ARRVAL_P(PS(http_session_vars)), name, namelen + 1, &current, sizeof(zval *), NULL);
} else {
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_UENCODE_LOOP(
if (!struc) {
smart_str_appendc(&buf, PS_UNDEF_MARKER);
}
if (key_type == HASH_KEY_IS_STRING) {
if (memchr(key.s, PS_DELIMITER, key_length)) {
PHP_VAR_SERIALIZE_DESTROY(var_hash);
smart_str_free(&buf);
return FAILURE;
}
smart_str_appendl(&buf, key.s, (unsigned char) key_length);
} else {
/* HASH_KEY_IS_UNICODE */
char *str = NULL;
int len;
UErrorCode status = U_ZERO_ERROR;
zend_unicode_to_string_ex(UG(utf8_conv), &str, &len, key.u, key_length, &status);
if (U_FAILURE(status) || memchr(str, PS_DELIMITER, key_length)) {
PHP_VAR_SERIALIZE_DESTROY(var_hash);
smart_str_free(&buf);
if (str) { efree(str); }
return FAILURE;
}
smart_str_appendl(&buf, str, len);
efree(str);
}
smart_str_appendc(&buf, PS_DELIMITER);
if (struc) {
php_var_serialize(&buf, struc, &var_hash TSRMLS_CC);
}
);
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;
has_value = 1;
q = p;
while (*q != PS_DELIMITER) {
if (++q >= endptr) goto break_outer_loop;
}
if (*p == PS_UNDEF_MARKER) {
if (++p >= endptr) goto break_outer_loop;
has_value = 0;
}
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)) {
zend_utf8_hash_update(Z_ARRVAL_P(PS(http_session_vars)), name, namelen + 1, &current, sizeof(zval *), NULL);
} else {
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;
int n;
php_gmtime_r(when, &tm);
n = snprintf(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, &SESS_SB_MTIME(sb));
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)) {
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;
if (SG(headers_sent)) {
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;
}
smart_str_appends(&ncookie, COOKIE_SET_COOKIE);
smart_str_appends(&ncookie, PS(session_name));
smart_str_appendc(&ncookie, '=');
smart_str_appends(&ncookie, PS(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_std_date(t 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_ascii_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;
int nrand;
int lensess;
PS(apply_trans_sid) = PS(use_trans_sid);
PS(define_sid) = 1;
PS(send_cookie) = 1;
if (PS(session_status) != php_session_none) {
if (PS(session_status) == php_session_disabled) {
char *value;
value = zend_ini_string("session.save_handler", sizeof("session.save_handler"), 0);
if (value) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot find save handler %s", value);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot find unknown save handler");
}
return;
}
php_error(E_NOTICE, "A session had already been started - ignoring session_start()");
return;
}
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_ascii_hash_find(&EG(symbol_table), "_COOKIE",
sizeof("_COOKIE"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_ARRAY &&
zend_ascii_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_ascii_hash_find(&EG(symbol_table), "_GET",
sizeof("_GET"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_ARRAY &&
zend_rt_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_ascii_hash_find(&EG(symbol_table), "_POST",
sizeof("_POST"), (void **) &data) == SUCCESS &&
Z_TYPE_PP(data) == IS_ARRAY &&
zend_rt_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_ascii_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);
}
}
/* 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(apply_trans_sid) = 1;
}
}
php_session_initialize(TSRMLS_C);
if (!PS(use_cookies) && PS(send_cookie)) {
if (PS(use_trans_sid)) {
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(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]]]]) U
Set session cookie parameters */
static PHP_FUNCTION(session_set_cookie_params)
{
/* lifetime is really a numeric, but the alter_ini_entry method wants a string */
char *lifetime, *path = NULL, *domain = NULL;
int lifetime_len, path_len, domain_len, argc = ZEND_NUM_ARGS();
zend_bool secure = 0, httponly = 0;
if (!PS(use_cookies) ||
zend_parse_parameters(argc TSRMLS_CC, "s|ssbb", &lifetime, &lifetime_len, &path, &path_len,
&domain, &domain_len, &secure, &httponly) == FAILURE) {
return;
}
zend_alter_ini_entry("session.cookie_lifetime", sizeof("session.cookie_lifetime"), lifetime, lifetime_len, 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) U
Return the session cookie parameters */
static PHP_FUNCTION(session_get_cookie_params)
{
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
array_init(return_value);
add_ascii_assoc_long(return_value, "lifetime", PS(cookie_lifetime));
add_ascii_assoc_rt_string(return_value, "path", PS(cookie_path), 1);
add_ascii_assoc_rt_string(return_value, "domain", PS(cookie_domain), 1);
add_ascii_assoc_bool(return_value, "secure", PS(cookie_secure));
add_ascii_assoc_bool(return_value, "httponly", PS(cookie_httponly));
}
/* }}} */
/* {{{ proto string session_name([string newname]) U
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, UG(utf8_conv)) == FAILURE) {
return;
}
RETVAL_UTF8_STRING(PS(session_name), ZSTR_DUPLICATE);
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]) U
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, UG(utf8_conv)) == FAILURE) {
return;
}
/* Set return_value to current module name */
if (PS(mod) && PS(mod)->s_name) {
RETVAL_UTF8_STRING((char*)PS(mod)->s_name, ZSTR_DUPLICATE);
} 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)->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) U
Sets user-level functions */
static PHP_FUNCTION(session_set_save_handler)
{
zval **args[6];
int i;
ps_user *mdata;
zval name;
if (PS(session_status) != php_session_none) {
RETURN_FALSE;
}
if (ZEND_NUM_ARGS() != 6 || zend_get_parameters_array_ex(6, args) == FAILURE) {
WRONG_PARAM_COUNT;
}
for (i = 0; i < 6; i++) {
if (!zend_is_callable(*args[i], 0, &name)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Argument %d is not a valid callback", i+1);
zval_dtor(&name);
RETURN_FALSE;
}
zval_dtor(&name);
}
zend_alter_ini_entry("session.save_handler", sizeof("session.save_handler"), "user", sizeof("user")-1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
mdata = emalloc(sizeof(*mdata));
for (i = 0; i < 6; i++) {
ZVAL_ADDREF(*args[i]);
mdata->names[i] = *args[i];
}
PS(mod_data) = (void *) mdata;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto string session_save_path([string newname]) U
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;
int name_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s&", &name, &name_len, UG(utf8_conv)) == FAILURE) {
return;
}
RETVAL_UTF8_STRING(PS(save_path), ZSTR_DUPLICATE);
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]) U
Return the current session id. If newid is given, the session id is replaced with newid */
static PHP_FUNCTION(session_id)
{
zstr name = NULL_ZSTR;
int name_len;
zend_uchar name_type;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|t", &name, &name_len, &name_type) == FAILURE) {
return;
}
if (name.v) {
char *old = PS(id);
if (name_type == IS_STRING) {
PS(id) = estrndup(name.s, name_len);
} else {
/* IS_UNICODE */
char *id = NULL;
int id_len;
UErrorCode status = U_ZERO_ERROR;
zend_unicode_to_string_ex(ZEND_U_CONVERTER(UG(runtime_encoding_conv)), &id, &id_len, name.u, name_len, &status);
if (U_SUCCESS(status) && id) {
PS(id) = id;
} else {
if (id) {
efree(id);
}
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Session ID must be either binary or a unicode string made up exclusively of ASCII");
RETURN_FALSE;
}
}
if (old) {
RETURN_STRING(old, 0);
} else {
RETURN_EMPTY_STRING();
}
} else if (PS(id)) {
RETURN_STRING(PS(id), 1);
} else {
RETURN_EMPTY_STRING();
}
}
/* }}} */
/* {{{ proto bool session_regenerate_id([bool delete_old_session]) U
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)) {
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]) U
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;
int limiter_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s&", &limiter, &limiter_len, UG(utf8_conv)) == FAILURE) {
return;
}
RETVAL_UTF8_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]) U
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)
{
/* Expires is really a numeric, but the alter_ini_entry method wants a string */
char *expires;
int expires_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s&", &expires, &expires_len, UG(utf8_conv)) == FAILURE) {
return;
}
RETVAL_LONG(PS(cache_expire));
if (expires) {
zend_alter_ini_entry("session.cache_expire", sizeof("session.cache_expire"), expires, expires_len, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
}
}
/* }}} */
/* {{{ static void php_register_var(zval** entry TSRMLS_DC) */
static void php_register_var(zval** entry TSRMLS_DC)
{
zval **value;
if (Z_TYPE_PP(entry) == IS_ARRAY) {
zend_hash_internal_pointer_reset(Z_ARRVAL_PP(entry));
while (zend_hash_get_current_data(Z_ARRVAL_PP(entry), (void**)&value) == SUCCESS) {
php_register_var(value TSRMLS_CC);
zend_hash_move_forward(Z_ARRVAL_PP(entry));
}
} else {
convert_to_string_ex(entry);
if (strcmp(Z_STRVAL_PP(entry), "_SESSION") != 0) {
PS_ADD_VARL(Z_STRVAL_PP(entry), Z_STRLEN_PP(entry));
}
}
}
/* }}} */
/* {{{ proto string session_encode(void) U
Serializes the current setup and returns the serialized representation */
static PHP_FUNCTION(session_encode)
{
int len;
char *enc;
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
enc = php_session_encode(&len TSRMLS_CC);
if (enc == NULL) {
RETURN_FALSE;
}
RETVAL_UTF8_STRINGL(enc, len, ZSTR_AUTOFREE);
}
/* }}} */
/* {{{ proto bool session_decode(string data) U
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, UG(utf8_conv)) == FAILURE) {
return;
}
php_session_decode(str, str_len TSRMLS_CC);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool session_start(void) U
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);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool session_destroy(void) U
Destroy the current session and all data associated with it */
static PHP_FUNCTION(session_destroy)
{
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
RETURN_BOOL(php_session_destroy(TSRMLS_C) == SUCCESS);
}
/* }}} */
/* {{{ proto void session_unset(void) U
Unset all registered variables */
static PHP_FUNCTION(session_unset)
{
if (PS(session_status) == php_session_none) {
RETURN_FALSE;
}
IF_SESSION_VARS() {
HashTable *ht = Z_ARRVAL_P(PS(http_session_vars));
/* Clean $_SESSION. */
zend_hash_clean(ht);
}
}
/* }}} */
/* {{{ proto void session_write_close(void) U
Write session data and end session */
static PHP_FUNCTION(session_write_close)
{
php_session_flush(TSRMLS_C);
}
/* }}} */
/* {{{ session_functions[]
*/
static zend_function_entry session_functions[] = {
PHP_FE(session_name, NULL)
PHP_FE(session_module_name, NULL)
PHP_FE(session_save_path, NULL)
PHP_FE(session_id, NULL)
PHP_FE(session_regenerate_id, NULL)
PHP_FE(session_decode, NULL)
PHP_FE(session_encode, NULL)
PHP_FE(session_start, NULL)
PHP_FE(session_destroy, NULL)
PHP_FE(session_unset, NULL)
PHP_FE(session_set_save_handler, NULL)
PHP_FE(session_cache_limiter, NULL)
PHP_FE(session_cache_expire, NULL)
PHP_FE(session_set_cookie_params, NULL)
PHP_FE(session_get_cookie_params, NULL)
PHP_FE(session_write_close, NULL)
PHP_FALIAS(session_commit, session_write_close, NULL)
{NULL, NULL, NULL}
};
/* }}} */
/* ********************************
* Module Setup and Destruction *
******************************** */
static PHP_RINIT_FUNCTION(session)
{
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(mod)) {
/* current status is unusable */
PS(session_status) = php_session_disabled;
return SUCCESS;
}
}
if (PS(auto_start)) {
php_session_start(TSRMLS_C);
}
return SUCCESS;
}
static PHP_RSHUTDOWN_FUNCTION(session)
{
php_session_flush(TSRMLS_C);
php_rshutdown_session_globals(TSRMLS_C);
return SUCCESS;
}
/* }}} */
static PHP_GINIT_FUNCTION(ps)
{
ps_globals->save_path = NULL;
ps_globals->session_name = NULL;
ps_globals->id = NULL;
ps_globals->mod = NULL;
ps_globals->mod_data = NULL;
ps_globals->session_status = php_session_none;
ps_globals->http_session_vars = NULL;
}
static PHP_MINIT_FUNCTION(session)
{
zend_register_auto_global("_SESSION", sizeof("_SESSION")-1, 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
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();
}
zend_module_entry session_module_entry = {
STANDARD_MODULE_HEADER,
"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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