root/ext/session/session.c

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DEFINITIONS

This source file includes following definitions.
  1. php_rinit_session_globals
  2. php_rshutdown_session_globals
  3. php_session_destroy
  4. php_add_session_var
  5. php_set_session_var
  6. php_get_session_var
  7. php_session_track_init
  8. php_session_encode
  9. php_session_decode
  10. bin_to_readable
  11. php_session_create_id
  12. php_session_valid_key
  13. php_session_initialize
  14. php_session_save_current_state
  15. PHP_INI_MH
  16. PHP_INI_MH
  17. PHP_INI_MH
  18. PHP_INI_MH
  19. PHP_INI_MH
  20. PHP_INI_MH
  21. PHP_INI_MH
  22. ZEND_INI_MH
  23. PHP_INI_BEGIN
  24. PS_SERIALIZER_DECODE_FUNC
  25. PS_SERIALIZER_ENCODE_FUNC
  26. PS_SERIALIZER_DECODE_FUNC
  27. PS_SERIALIZER_ENCODE_FUNC
  28. PS_SERIALIZER_DECODE_FUNC
  29. php_session_register_serializer
  30. php_session_register_module
  31. strcpy_gmt
  32. last_modified
  33. CACHE_LIMITER_FUNC
  34. CACHE_LIMITER_FUNC
  35. CACHE_LIMITER_FUNC
  36. CACHE_LIMITER_FUNC
  37. php_session_cache_limiter
  38. php_session_remove_cookie
  39. php_session_send_cookie
  40. _php_find_ps_module
  41. _php_find_ps_serializer
  42. ppid2sid
  43. php_session_reset_id
  44. php_session_start
  45. php_session_flush
  46. session_adapt_url
  47. PHP_FUNCTION
  48. PHP_FUNCTION
  49. PHP_FUNCTION
  50. PHP_FUNCTION
  51. PHP_FUNCTION
  52. PHP_FUNCTION
  53. PHP_FUNCTION
  54. PHP_FUNCTION
  55. PHP_FUNCTION
  56. PHP_FUNCTION
  57. PHP_FUNCTION
  58. PHP_FUNCTION
  59. PHP_FUNCTION
  60. PHP_FUNCTION
  61. PHP_FUNCTION
  62. PHP_FUNCTION
  63. PHP_FUNCTION
  64. PHP_FUNCTION
  65. php_rinit_session
  66. PHP_RINIT_FUNCTION
  67. PHP_RSHUTDOWN_FUNCTION
  68. PHP_GINIT_FUNCTION
  69. PHP_MINIT_FUNCTION
  70. PHP_MSHUTDOWN_FUNCTION
  71. PHP_MINFO_FUNCTION
  72. early_find_sid_in
  73. php_session_rfc1867_early_find_sid
  74. php_check_cancel_upload
  75. php_session_rfc1867_update
  76. php_session_rfc1867_cleanup
  77. php_session_rfc1867_callback

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 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/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;

/* SessionHandlerInterface */
zend_class_entry *php_session_iface_entry;

/* SessionIdInterface */
zend_class_entry *php_session_id_iface_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; \
        }

static void php_session_send_cookie(TSRMLS_D);

/* 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));
                PS(id) = NULL;
        }
}
/* }}} */

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(id) && 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 = NULL;
#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 &&
                Z_TYPE_PP(token) == IS_STRING
        ) {
                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, MIN(toread, sizeof(rbuf))) == 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;
}
/* }}} */

/* Default session id char validation function allowed by ps_modules.
 * If you change the logic here, please also update the error message in
 * ps_modules appropriately */
PHPAPI int php_session_valid_key(const char *key) /* {{{ */
{
        size_t len;
        const char *p;
        char c;
        int ret = SUCCESS;

        for (p = key; (c = *p); p++) {
                /* valid characters are a..z,A..Z,0..9 */
                if (!((c >= 'a' && c <= 'z')
                                || (c >= 'A' && c <= 'Z')
                                || (c >= '0' && c <= '9')
                                || c == ','
                                || c == '-')) {
                        ret = FAILURE;
                        break;
                }
        }

        len = p - key;

        /* Somewhat arbitrary length limit here, but should be way more than
           anyone needs and avoids file-level warnings later on if we exceed MAX_PATH */
        if (len == 0 || len > 128) {
                ret = FAILURE;
        }

        return ret;
}
/* }}} */

static void php_session_initialize(TSRMLS_D) /* {{{ */
{
        char *val = NULL;
        int vallen;

        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)) {
                PS(id) = PS(mod)->s_create_sid(&PS(mod_data), NULL TSRMLS_CC);
                if (!PS(id)) {
                        php_error_docref(NULL TSRMLS_CC, E_ERROR, "Failed to create session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
                        return;
                }
                if (PS(use_cookies)) {
                        PS(send_cookie) = 1;
                }
        }

        /* Set session ID for compatibility for older/3rd party save handlers */
        if (!PS(use_strict_mode)) {
                php_session_reset_id(TSRMLS_C);
                PS(session_status) = php_session_active;
        }

        /* Read data */
        php_session_track_init(TSRMLS_C);
        if (PS(mod)->s_read(&PS(mod_data), PS(id), &val, &vallen TSRMLS_CC) == FAILURE) {
                /* Some broken save handler implementation returns FAILURE for non-existent session ID */
                /* It's better to raise error for this, but disabled error for better compatibility */
                /*
                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Failed to read session data: %s (path: %s)", PS(mod)->s_name, PS(save_path));
                */
        }
        /* Set session ID if session read didn't activated session */
        if (PS(use_strict_mode) && PS(session_status) != php_session_active) {
                php_session_reset_id(TSRMLS_C);
                PS(session_status) = php_session_active;
        }
        if (val) {
                php_session_decode(val, vallen TSRMLS_CC);
                efree(val);
        }

        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;
        }
}
/* }}} */

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(OnUpdateName) /* {{{ */
{
        /* Numeric session.name won't work at all */
        if ((!new_value_length || is_numeric_string(new_value, new_value_length, NULL, NULL, 0))) {
                int err_type;

                if (stage == ZEND_INI_STAGE_RUNTIME || stage == ZEND_INI_STAGE_ACTIVATE || stage == ZEND_INI_STAGE_STARTUP) {
                        err_type = E_WARNING;
                } else {
                        err_type = E_ERROR;
                }

                /* Do not output error when restoring ini options. */
                if (stage != ZEND_INI_STAGE_DEACTIVATE) {
                        php_error_docref(NULL TSRMLS_CC, err_type, "session.name cannot be a numeric or empty '%s'", new_value);
                }
                return FAILURE;
        }

        OnUpdateStringUnempty(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, OnUpdateName, session_name,       php_ps_globals,    ps_globals)
        PHP_INI_ENTRY("session.save_handler",           "files",     PHP_INI_ALL, OnUpdateSaveHandler)
        STD_PHP_INI_BOOLEAN("session.auto_start",       "0",         PHP_INI_PERDIR, OnUpdateBool,   auto_start,         php_ps_globals,    ps_globals)
        STD_PHP_INI_ENTRY("session.gc_probability",     "1",         PHP_INI_ALL, OnUpdateLong,   gc_probability,     php_ps_globals,    ps_globals)
        STD_PHP_INI_ENTRY("session.gc_divisor",         "100",       PHP_INI_ALL, OnUpdateLong,   gc_divisor,         php_ps_globals,    ps_globals)
        STD_PHP_INI_ENTRY("session.gc_maxlifetime",     "1440",      PHP_INI_ALL, OnUpdateLong,   gc_maxlifetime,     php_ps_globals,    ps_globals)
        PHP_INI_ENTRY("session.serialize_handler",      "php",       PHP_INI_ALL, OnUpdateSerializer)
        STD_PHP_INI_ENTRY("session.cookie_lifetime",    "0",         PHP_INI_ALL, OnUpdateLong,   cookie_lifetime,    php_ps_globals,    ps_globals)
        STD_PHP_INI_ENTRY("session.cookie_path",        "/",         PHP_INI_ALL, OnUpdateString, cookie_path,        php_ps_globals,    ps_globals)
        STD_PHP_INI_ENTRY("session.cookie_domain",      "",          PHP_INI_ALL, OnUpdateString, cookie_domain,      php_ps_globals,    ps_globals)
        STD_PHP_INI_BOOLEAN("session.cookie_secure",    "",          PHP_INI_ALL, OnUpdateBool,   cookie_secure,      php_ps_globals,    ps_globals)
        STD_PHP_INI_BOOLEAN("session.cookie_httponly",  "",          PHP_INI_ALL, OnUpdateBool,   cookie_httponly,    php_ps_globals,    ps_globals)
        STD_PHP_INI_BOOLEAN("session.use_cookies",      "1",         PHP_INI_ALL, OnUpdateBool,   use_cookies,        php_ps_globals,    ps_globals)
        STD_PHP_INI_BOOLEAN("session.use_only_cookies", "1",         PHP_INI_ALL, OnUpdateBool,   use_only_cookies,   php_ps_globals,    ps_globals)
        STD_PHP_INI_BOOLEAN("session.use_strict_mode",  "0",         PHP_INI_ALL, OnUpdateBool,   use_strict_mode,    php_ps_globals,    ps_globals)
        STD_PHP_INI_ENTRY("session.referer_check",      "",          PHP_INI_ALL, OnUpdateString, extern_referer_chk, php_ps_globals,    ps_globals)
#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 *
   *************** */
PS_SERIALIZER_ENCODE_FUNC(php_serialize) /* {{{ */
{
        smart_str buf = {0};
        php_serialize_data_t var_hash;

        PHP_VAR_SERIALIZE_INIT(var_hash);
        php_var_serialize(&buf, &PS(http_session_vars), &var_hash TSRMLS_CC);
        PHP_VAR_SERIALIZE_DESTROY(var_hash);
        if (newlen) {
                *newlen = buf.len;
        }
        smart_str_0(&buf);
        *newstr = buf.c;
        return SUCCESS;
}
/* }}} */

PS_SERIALIZER_DECODE_FUNC(php_serialize) /* {{{ */
{
        const char *endptr = val + vallen;
        zval *session_vars;
        php_unserialize_data_t var_hash;

        PHP_VAR_UNSERIALIZE_INIT(var_hash);
        ALLOC_INIT_ZVAL(session_vars);
        php_var_unserialize(&session_vars, &val, endptr, &var_hash TSRMLS_CC);
        PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
        if (PS(http_session_vars)) {
                zval_ptr_dtor(&PS(http_session_vars));
        }
        if (Z_TYPE_P(session_vars) == IS_NULL) {
                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);
        return SUCCESS;
}
/* }}} */

#define PS_BIN_NR_OF_BITS 8
#define PS_BIN_UNDEF (1<<(PS_BIN_NR_OF_BITS-1))
#define PS_BIN_MAX (PS_BIN_UNDEF-1)

PS_SERIALIZER_ENCODE_FUNC(php_binary) /* {{{ */
{
        smart_str buf = {0};
        php_serialize_data_t var_hash;
        PS_ENCODE_VARS;

        PHP_VAR_SERIALIZE_INIT(var_hash);

        PS_ENCODE_LOOP(
                        if (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 32
#define PREDEFINED_SERIALIZERS 3

static ps_serializer ps_serializers[MAX_SERIALIZERS + 1] = {
        PS_SERIALIZER_ENTRY(php_serialize),
        PS_SERIALIZER_ENTRY(php),
        PS_SERIALIZER_ENTRY(php_binary)
};

PHPAPI int php_session_register_serializer(const char *name, 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) {
                ubuf[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_MAX_AGE  "; Max-Age="
#define COOKIE_PATH             "; path="
#define COOKIE_DOMAIN   "; domain="
#define COOKIE_SECURE   "; secure"
#define COOKIE_HTTPONLY "; HttpOnly"

/*
 * Remove already sent session ID cookie.
 * It must be directly removed from SG(sapi_header) because sapi_add_header_ex()
 * removes all of matching cookie. i.e. It deletes all of Set-Cookie headers.
 */
static void php_session_remove_cookie(TSRMLS_D) {
        sapi_header_struct *header;
        zend_llist *l = &SG(sapi_headers).headers;
        zend_llist_element *next;
        zend_llist_element *current;
        char *session_cookie, *e_session_name;
        int session_cookie_len, len = sizeof("Set-Cookie")-1;

        e_session_name = php_url_encode(PS(session_name), strlen(PS(session_name)), NULL);
        spprintf(&session_cookie, 0, "Set-Cookie: %s=", e_session_name);
        efree(e_session_name);

        session_cookie_len = strlen(session_cookie);
        current = l->head;
        while (current) {
                header = (sapi_header_struct *)(current->data);
                next = current->next;
                if (header->header_len > len && header->header[len] == ':'
                        && !strncmp(header->header, session_cookie, session_cookie_len)) {
                        if (current->prev) {
                                current->prev->next = next;
                        } else {
                                l->head = next;
                        }
                        if (next) {
                                next->prev = current->prev;
                        } else {
                                l->tail = current->prev;
                        }
                        sapi_free_header(header);
                        efree(current);
                        --l->count;
                }
                current = next;
        }
        efree(session_cookie);
}

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);

                        smart_str_appends(&ncookie, COOKIE_MAX_AGE);
                        smart_str_append_long(&ncookie, PS(cookie_lifetime));
                }
        }

        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);

        php_session_remove_cookie(TSRMLS_C); /* remove already sent session ID cookie */
        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;
}
/* }}} */

static void ppid2sid(zval **ppid TSRMLS_DC) {
        if (Z_TYPE_PP(ppid) != IS_STRING) {
                PS(id) = NULL;
                PS(send_cookie) = 1;
        } else {
                convert_to_string((*ppid));
                PS(id) = estrndup(Z_STRVAL_PP(ppid), Z_STRLEN_PP(ppid));
                PS(send_cookie) = 0;
        }
}

PHPAPI void php_session_reset_id(TSRMLS_D) /* {{{ */
{
        int module_number = PS(module_number);

        if (!PS(id)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot set session ID - session ID is not initialized");
                return;
        }

        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(ppid TSRMLS_CC);
                        PS(apply_trans_sid) = 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(ppid TSRMLS_CC);
                }

                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(ppid TSRMLS_CC);
                }
        }

        /* 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;
                }
        }

        /* Finally check session id for dangarous characters
         * Security note: session id may be embedded in HTML pages.*/
        if (PS(id) && strpbrk(PS(id), "\r\n\t <>'\"\\")) {
                efree(PS(id));
                PS(id) = NULL;
        }

        php_session_initialize(TSRMLS_C);
        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;
                php_session_save_current_state(TSRMLS_C);
        }
}
/* }}} */

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, string create_sid)
   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 > 0 && 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_iface_entry, &register_shutdown) == FAILURE) {
                        RETURN_FALSE;
                }

                /* Find implemented methods - SessionHandlerInterface */
                zend_hash_internal_pointer_reset_ex(&php_session_iface_entry->function_table, &pos);
                i = 0;
                while (zend_hash_get_current_data_ex(&php_session_iface_entry->function_table, (void **) &default_mptr, &pos) == SUCCESS) {
                        zend_hash_get_current_key_ex(&php_session_iface_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_iface_entry->function_table, &pos);
                        ++i;
                }

                /* Find implemented methods - SessionIdInterface (optional) */
                zend_hash_internal_pointer_reset_ex(&php_session_id_iface_entry->function_table, &pos);
                while (zend_hash_get_current_data_ex(&php_session_id_iface_entry->function_table, (void **) &default_mptr, &pos) == SUCCESS) {
                        zend_hash_get_current_key_ex(&php_session_id_iface_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;
                        }

                        zend_hash_move_forward_ex(&php_session_id_iface_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 (argc != 6 && argc != 7) {
                WRONG_PARAM_COUNT;
        }

        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);

        /* at this point argc can only be 6 or 7 */
        for (i = 0; i < argc; 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 < argc; 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, argc = ZEND_NUM_ARGS();

        if (zend_parse_parameters(argc 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);
                if (PS(id)) {
                        PS(send_cookie) = 1;
                        php_session_reset_id(TSRMLS_C);
                        RETURN_TRUE;
                } else {
                        PS(id) = STR_EMPTY_ALLOC();
                }
        }
        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 ?*/
        if (PS(id) && !strlen(PS(id))) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot start session with empty session ID");
                RETURN_FALSE;
        }

        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, 1)
        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_ARG_INFO(0, create_sid)
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()

ZEND_BEGIN_ARG_INFO(arginfo_session_class_create_sid, 0)
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
};
/* }}} */

/* {{{ SessionHandlerInterface functions[]
*/
static const zend_function_entry php_session_iface_functions[] = {
        PHP_ABSTRACT_ME(SessionHandlerInterface, open, arginfo_session_class_open)
        PHP_ABSTRACT_ME(SessionHandlerInterface, close, arginfo_session_class_close)
        PHP_ABSTRACT_ME(SessionHandlerInterface, read, arginfo_session_class_read)
        PHP_ABSTRACT_ME(SessionHandlerInterface, write, arginfo_session_class_write)
        PHP_ABSTRACT_ME(SessionHandlerInterface, destroy, arginfo_session_class_destroy)
        PHP_ABSTRACT_ME(SessionHandlerInterface, gc, arginfo_session_class_gc)
        { NULL, NULL, NULL }
};
/* }}} */

/* {{{ SessionIdInterface functions[]
*/
static const zend_function_entry php_session_id_iface_functions[] = {
        PHP_ABSTRACT_ME(SessionIdInterface, create_sid, arginfo_session_class_create_sid)
        { NULL, NULL, NULL }
};
/* }}} */

/* {{{ SessionHandler 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)
        PHP_ME(SessionHandler, create_sid, arginfo_session_class_create_sid, 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;

        zend_try {
                php_session_flush(TSRMLS_C);
        } zend_end_try();
        php_rshutdown_session_globals(TSRMLS_C);

        /* this should NOT be done in php_rshutdown_session_globals() */
        for (i = 0; i < 7; 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 < 7; 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 interfaces */
        INIT_CLASS_ENTRY(ce, PS_IFACE_NAME, php_session_iface_functions);
        php_session_iface_entry = zend_register_internal_class(&ce TSRMLS_CC);
        php_session_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;

        INIT_CLASS_ENTRY(ce, PS_SID_IFACE_NAME, php_session_id_iface_functions);
        php_session_id_iface_entry = zend_register_internal_class(&ce TSRMLS_CC);
        php_session_id_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;

        /* 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);
        zend_class_implements(php_session_class_entry TSRMLS_CC, 1, php_session_iface_entry);
        zend_class_implements(php_session_class_entry TSRMLS_CC, 1, php_session_id_iface_entry);

        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

        /* reset rfc1867 callbacks */
        php_session_rfc1867_orig_callback = NULL;
        if (php_rfc1867_callback == php_session_rfc1867_callback) {
                php_rfc1867_callback = NULL;
        }

        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
 */

/* [<][>][^][v][top][bottom][index][help] */