/* +----------------------------------------------------------------------+ | 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 | | Andrei Zmievski | +----------------------------------------------------------------------+ */ /* $Id$ */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "php.h" #ifdef PHP_WIN32 # include "win32/winutil.h" # include "win32/time.h" #else # include #endif #include #include #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 int 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 FAILURE; } 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"); return FAILURE; } return SUCCESS; } /* }}} */ /* * Note that we cannot use the BASE64 alphabet here, because * it contains "/" and "+": both are unacceptable for simple inclusion * into URLs. */ static char hexconvtab[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,-"; 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); str_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 }}} */ php_error_docref(NULL TSRMLS_CC, E_WARNING, "session.configuration 'session.hash_function' must be existing hash function. %s does not exist.", new_value); 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", "/var/lib/php5/sessions", 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); if (php_var_unserialize(&session_vars, &val, endptr, &var_hash TSRMLS_CC)) { var_push_dtor(&var_hash, &session_vars); } 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), Z_REFCOUNT_P(PS(http_session_vars)) + 1, 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(¤t, (const unsigned char **) &p, (const unsigned char *) endptr, &var_hash TSRMLS_CC)) { php_set_session_var(name, namelen, current, &var_hash TSRMLS_CC); } else { PHP_VAR_UNSERIALIZE_DESTROY(var_hash); return FAILURE; } var_push_dtor_no_addref(&var_hash, ¤t); } 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(¤t, (const unsigned char **) &q, (const unsigned char *) endptr, &var_hash TSRMLS_CC)) { php_set_session_var(name, namelen, current, &var_hash TSRMLS_CC); } else { var_push_dtor_no_addref(&var_hash, ¤t); efree(name); PHP_VAR_UNSERIALIZE_DESTROY(var_hash); return FAILURE; } var_push_dtor_no_addref(&var_hash, ¤t); } 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 * '=' to allow URLs of the form * http://yoursite/=/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); } } /* }}} */ static void php_session_abort(TSRMLS_D) /* {{{ */ { if (PS(session_status) == php_session_active) { PS(session_status) = php_session_none; if (PS(mod_data) || PS(mod_user_implemented)) { PS(mod)->s_close(&PS(mod_data) TSRMLS_CC); } } } /* }}} */ static void php_session_reset(TSRMLS_D) /* {{{ */ { if (PS(session_status) == php_session_active) { php_session_initialize(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, ®ister_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 **)¤t_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 **)¤t_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) = 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; } RETVAL_BOOL(php_session_decode(str, str_len TSRMLS_CC) == SUCCESS); } /* }}} */ /* {{{ 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 $_SESSION. */ zend_hash_clean(ht_sess_var); } } /* }}} */ /* {{{ proto void session_write_close(void) Write session data and end session */ static PHP_FUNCTION(session_write_close) { php_session_flush(TSRMLS_C); } /* }}} */ /* {{{ proto void session_abort(void) Abort session and end session. Session data will not be written */ static PHP_FUNCTION(session_abort) { php_session_abort(TSRMLS_C); } /* }}} */ /* {{{ proto void session_reset(void) Reset session data from saved session data */ static PHP_FUNCTION(session_reset) { php_session_reset(TSRMLS_C); } /* }}} */ /* {{{ proto int session_status(void) Returns the current session status */ static PHP_FUNCTION(session_status) { if (zend_parse_parameters_none() == FAILURE) { return; } RETURN_LONG(PS(session_status)); } /* }}} */ /* {{{ proto void session_register_shutdown(void) Registers session_write_close() as a shutdown function */ static PHP_FUNCTION(session_register_shutdown) { php_shutdown_function_entry shutdown_function_entry; zval *callback; /* This function is registered itself as a shutdown function by * session_set_save_handler($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_abort, arginfo_session_void) PHP_FE(session_reset, 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 */