root/ext/session/php_session.h

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   1 /* 
   2    +----------------------------------------------------------------------+
   3    | PHP Version 5                                                        |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 1997-2016 The PHP Group                                |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15    | Author: Sascha Schumann <sascha@schumann.cx>                         |
  16    +----------------------------------------------------------------------+
  17  */
  18 
  19 /* $Id$ */
  20 
  21 #ifndef PHP_SESSION_H
  22 #define PHP_SESSION_H
  23 
  24 #include "ext/standard/php_var.h"
  25 
  26 #if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
  27 # include "ext/hash/php_hash.h"
  28 #endif
  29 
  30 #define PHP_SESSION_API 20020330
  31 
  32 /* To check php_session_valid_key()/php_session_reset_id() */
  33 #define PHP_SESSION_STRICT 1
  34 
  35 #define PS_OPEN_ARGS void **mod_data, const char *save_path, const char *session_name TSRMLS_DC
  36 #define PS_CLOSE_ARGS void **mod_data TSRMLS_DC
  37 #define PS_READ_ARGS void **mod_data, const char *key, char **val, int *vallen TSRMLS_DC
  38 #define PS_WRITE_ARGS void **mod_data, const char *key, const char *val, const int vallen TSRMLS_DC
  39 #define PS_DESTROY_ARGS void **mod_data, const char *key TSRMLS_DC
  40 #define PS_GC_ARGS void **mod_data, int maxlifetime, int *nrdels TSRMLS_DC
  41 #define PS_CREATE_SID_ARGS void **mod_data, int *newlen TSRMLS_DC
  42 
  43 /* default create id function */
  44 PHPAPI char *php_session_create_id(PS_CREATE_SID_ARGS);
  45 
  46 typedef struct ps_module_struct {
  47         const char *s_name;
  48         int (*s_open)(PS_OPEN_ARGS);
  49         int (*s_close)(PS_CLOSE_ARGS);
  50         int (*s_read)(PS_READ_ARGS);
  51         int (*s_write)(PS_WRITE_ARGS);
  52         int (*s_destroy)(PS_DESTROY_ARGS);
  53         int (*s_gc)(PS_GC_ARGS);
  54         char *(*s_create_sid)(PS_CREATE_SID_ARGS);
  55 } ps_module;
  56 
  57 #define PS_GET_MOD_DATA() *mod_data
  58 #define PS_SET_MOD_DATA(a) *mod_data = (a)
  59 
  60 #define PS_OPEN_FUNC(x)         int ps_open_##x(PS_OPEN_ARGS)
  61 #define PS_CLOSE_FUNC(x)        int ps_close_##x(PS_CLOSE_ARGS)
  62 #define PS_READ_FUNC(x)         int ps_read_##x(PS_READ_ARGS)
  63 #define PS_WRITE_FUNC(x)        int ps_write_##x(PS_WRITE_ARGS)
  64 #define PS_DESTROY_FUNC(x)      int ps_delete_##x(PS_DESTROY_ARGS)
  65 #define PS_GC_FUNC(x)           int ps_gc_##x(PS_GC_ARGS)
  66 #define PS_CREATE_SID_FUNC(x)   char *ps_create_sid_##x(PS_CREATE_SID_ARGS)
  67 
  68 #define PS_FUNCS(x) \
  69         PS_OPEN_FUNC(x); \
  70         PS_CLOSE_FUNC(x); \
  71         PS_READ_FUNC(x); \
  72         PS_WRITE_FUNC(x); \
  73         PS_DESTROY_FUNC(x); \
  74         PS_GC_FUNC(x);  \
  75         PS_CREATE_SID_FUNC(x)
  76 
  77 #define PS_MOD(x) \
  78         #x, ps_open_##x, ps_close_##x, ps_read_##x, ps_write_##x, \
  79          ps_delete_##x, ps_gc_##x, php_session_create_id
  80 
  81 /* SID creation enabled module handler definitions */
  82 #define PS_FUNCS_SID(x) \
  83         PS_OPEN_FUNC(x); \
  84         PS_CLOSE_FUNC(x); \
  85         PS_READ_FUNC(x); \
  86         PS_WRITE_FUNC(x); \
  87         PS_DESTROY_FUNC(x); \
  88         PS_GC_FUNC(x); \
  89         PS_CREATE_SID_FUNC(x)
  90 
  91 #define PS_MOD_SID(x) \
  92         #x, ps_open_##x, ps_close_##x, ps_read_##x, ps_write_##x, \
  93          ps_delete_##x, ps_gc_##x, ps_create_sid_##x
  94 
  95 typedef enum {
  96         php_session_disabled,
  97         php_session_none,
  98         php_session_active
  99 } php_session_status;
 100 
 101 typedef struct _php_session_rfc1867_progress {
 102 
 103         size_t    sname_len;
 104         zval      sid;
 105         smart_str key;
 106 
 107         long      update_step;
 108         long      next_update;
 109         double    next_update_time;
 110         zend_bool cancel_upload;
 111         zend_bool apply_trans_sid;
 112         size_t    content_length;
 113 
 114         zval      *data;                 /* the array exported to session data */
 115         zval      *post_bytes_processed; /* data["bytes_processed"] */
 116         zval      *files;                /* data["files"] array */
 117         zval      *current_file;         /* array of currently uploading file */
 118         zval      *current_file_bytes_processed;
 119 } php_session_rfc1867_progress;
 120 
 121 typedef struct _php_ps_globals {
 122         char *save_path;
 123         char *session_name;
 124         char *id;
 125         char *extern_referer_chk;
 126         char *entropy_file;
 127         char *cache_limiter;
 128         long entropy_length;
 129         long cookie_lifetime;
 130         char *cookie_path;
 131         char *cookie_domain;
 132         zend_bool  cookie_secure;
 133         zend_bool  cookie_httponly;
 134         ps_module *mod;
 135         ps_module *default_mod;
 136         void *mod_data;
 137         php_session_status session_status;
 138         long gc_probability;
 139         long gc_divisor;
 140         long gc_maxlifetime;
 141         int module_number;
 142         long cache_expire;
 143         union {
 144                 zval *names[7];
 145                 struct {
 146                         zval *ps_open;
 147                         zval *ps_close;
 148                         zval *ps_read;
 149                         zval *ps_write;
 150                         zval *ps_destroy;
 151                         zval *ps_gc;
 152                         zval *ps_create_sid;
 153                 } name;
 154         } mod_user_names;
 155         int mod_user_implemented;
 156         int mod_user_is_open;
 157         const struct ps_serializer_struct *serializer;
 158         zval *http_session_vars;
 159         zend_bool auto_start;
 160         zend_bool use_cookies;
 161         zend_bool use_only_cookies;
 162         zend_bool use_trans_sid;        /* contains the INI value of whether to use trans-sid */
 163         zend_bool apply_trans_sid;      /* whether or not to enable trans-sid for the current request */
 164 
 165         long hash_func;
 166 #if defined(HAVE_HASH_EXT) && !defined(COMPILE_DL_HASH)
 167         php_hash_ops *hash_ops;
 168 #endif
 169         long hash_bits_per_character;
 170         int send_cookie;
 171         int define_sid;
 172         zend_bool invalid_session_id;   /* allows the driver to report about an invalid session id and request id regeneration */
 173 
 174         php_session_rfc1867_progress *rfc1867_progress;
 175         zend_bool rfc1867_enabled; /* session.upload_progress.enabled */
 176         zend_bool rfc1867_cleanup; /* session.upload_progress.cleanup */
 177         smart_str rfc1867_prefix;  /* session.upload_progress.prefix */
 178         smart_str rfc1867_name;    /* session.upload_progress.name */
 179         long rfc1867_freq;         /* session.upload_progress.freq */
 180         double rfc1867_min_freq;   /* session.upload_progress.min_freq */
 181 
 182         zend_bool use_strict_mode; /* whether or not PHP accepts unknown session ids */
 183         unsigned char session_data_hash[16]; /* binary MD5 hash length */
 184 } php_ps_globals;
 185 
 186 typedef php_ps_globals zend_ps_globals;
 187 
 188 extern zend_module_entry session_module_entry;
 189 #define phpext_session_ptr &session_module_entry
 190 
 191 #ifdef ZTS
 192 #define PS(v) TSRMG(ps_globals_id, php_ps_globals *, v)
 193 #else
 194 #define PS(v) (ps_globals.v)
 195 #endif
 196 
 197 #define PS_SERIALIZER_ENCODE_ARGS char **newstr, int *newlen TSRMLS_DC
 198 #define PS_SERIALIZER_DECODE_ARGS const char *val, int vallen TSRMLS_DC
 199 
 200 typedef struct ps_serializer_struct {
 201         const char *name;
 202         int (*encode)(PS_SERIALIZER_ENCODE_ARGS);
 203         int (*decode)(PS_SERIALIZER_DECODE_ARGS);
 204 } ps_serializer;
 205 
 206 #define PS_SERIALIZER_ENCODE_NAME(x) ps_srlzr_encode_##x
 207 #define PS_SERIALIZER_DECODE_NAME(x) ps_srlzr_decode_##x
 208 
 209 #define PS_SERIALIZER_ENCODE_FUNC(x) \
 210         int PS_SERIALIZER_ENCODE_NAME(x)(PS_SERIALIZER_ENCODE_ARGS)
 211 #define PS_SERIALIZER_DECODE_FUNC(x) \
 212         int PS_SERIALIZER_DECODE_NAME(x)(PS_SERIALIZER_DECODE_ARGS)
 213 
 214 #define PS_SERIALIZER_FUNCS(x) \
 215         PS_SERIALIZER_ENCODE_FUNC(x); \
 216         PS_SERIALIZER_DECODE_FUNC(x)
 217 
 218 #define PS_SERIALIZER_ENTRY(x) \
 219         { #x, PS_SERIALIZER_ENCODE_NAME(x), PS_SERIALIZER_DECODE_NAME(x) }
 220 
 221 PHPAPI void session_adapt_url(const char *, size_t, char **, size_t * TSRMLS_DC);
 222 
 223 PHPAPI void php_add_session_var(char *name, size_t namelen TSRMLS_DC);
 224 PHPAPI void php_set_session_var(char *name, size_t namelen, zval *state_val, php_unserialize_data_t *var_hash TSRMLS_DC);
 225 PHPAPI int php_get_session_var(char *name, size_t namelen, zval ***state_var TSRMLS_DC);
 226 
 227 PHPAPI int php_session_register_module(ps_module *);
 228 
 229 PHPAPI int php_session_register_serializer(const char *name,
 230                 int (*encode)(PS_SERIALIZER_ENCODE_ARGS),
 231                 int (*decode)(PS_SERIALIZER_DECODE_ARGS));
 232 
 233 PHPAPI void php_session_set_id(char *id TSRMLS_DC);
 234 PHPAPI void php_session_start(TSRMLS_D);
 235 
 236 PHPAPI ps_module *_php_find_ps_module(char *name TSRMLS_DC);
 237 PHPAPI const ps_serializer *_php_find_ps_serializer(char *name TSRMLS_DC);
 238 
 239 PHPAPI int php_session_valid_key(const char *key);
 240 PHPAPI void php_session_reset_id(TSRMLS_D);
 241 
 242 #define PS_ADD_VARL(name,namelen) do {                                                                          \
 243         php_add_session_var(name, namelen TSRMLS_CC);                                                   \
 244 } while (0)
 245 
 246 #define PS_ADD_VAR(name) PS_ADD_VARL(name, strlen(name))
 247 
 248 #define PS_DEL_VARL(name,namelen) do {                                                                          \
 249         if (PS(http_session_vars)) {                                                                                    \
 250                 zend_hash_del(Z_ARRVAL_P(PS(http_session_vars)), name, namelen+1);      \
 251         }                                                                                                                                               \
 252 } while (0)
 253 
 254 
 255 #define PS_ENCODE_VARS                                                                                  \
 256         char *key;                                                                                                      \
 257         uint key_length;                                                                                        \
 258         ulong num_key;                                                                                          \
 259         zval **struc;
 260 
 261 #define PS_ENCODE_LOOP(code) do {                                                                       \
 262                 HashTable *_ht = Z_ARRVAL_P(PS(http_session_vars));                     \
 263                 int key_type;                                                                                           \
 264                                                                                                                                         \
 265                 for (zend_hash_internal_pointer_reset(_ht);                                     \
 266                                 (key_type = zend_hash_get_current_key_ex(_ht, &key, &key_length, &num_key, 0, NULL)) != HASH_KEY_NON_EXISTENT; \
 267                                         zend_hash_move_forward(_ht)) {                                  \
 268                         if (key_type == HASH_KEY_IS_LONG) {                                             \
 269                                 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Skipping numeric key %ld", num_key);        \
 270                                 continue;                                                                                       \
 271                         }                                                                                                               \
 272                         key_length--;                                                                                   \
 273                         if (php_get_session_var(key, key_length, &struc TSRMLS_CC) == SUCCESS) {        \
 274                                 code;                                                                                           \
 275                         }                                                                                                               \
 276                 }                                                                                                                       \
 277         } while(0)
 278 
 279 PHPAPI ZEND_EXTERN_MODULE_GLOBALS(ps)
 280 
 281 void php_session_auto_start(void *data);
 282 
 283 #define PS_CLASS_NAME "SessionHandler"
 284 extern zend_class_entry *php_session_class_entry;
 285 
 286 #define PS_IFACE_NAME "SessionHandlerInterface"
 287 extern zend_class_entry *php_session_iface_entry;
 288 
 289 #define PS_SID_IFACE_NAME "SessionIdInterface"
 290 extern zend_class_entry *php_session_id_iface_entry;
 291 
 292 extern PHP_METHOD(SessionHandler, open);
 293 extern PHP_METHOD(SessionHandler, close);
 294 extern PHP_METHOD(SessionHandler, read);
 295 extern PHP_METHOD(SessionHandler, write);
 296 extern PHP_METHOD(SessionHandler, destroy);
 297 extern PHP_METHOD(SessionHandler, gc);
 298 extern PHP_METHOD(SessionHandler, create_sid);
 299 
 300 #endif

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