root/ext/session/mod_user.c

DEFINITIONS

1. ps_call_handler
2. PS_OPEN_FUNC
3. PS_CLOSE_FUNC
4. PS_READ_FUNC
5. PS_WRITE_FUNC
6. PS_DESTROY_FUNC
7. PS_GC_FUNC
8. PS_CREATE_SID_FUNC

/* 
   +----------------------------------------------------------------------+
   | 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.               |
   +----------------------------------------------------------------------+
   | Author: Sascha Schumann <sascha@schumann.cx>                         |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#include "php.h"
#include "php_session.h"
#include "mod_user.h"

ps_module ps_mod_user = {
        PS_MOD_SID(user)
};

#define SESS_ZVAL_LONG(val, a)                                          \
{                                                                                                       \
        MAKE_STD_ZVAL(a);                                                               \
        ZVAL_LONG(a, val);                                                              \
}

#define SESS_ZVAL_STRING(vl, a)                                         \
{                                                                                                       \
        char *__vl = vl;                                                                \
        SESS_ZVAL_STRINGN(__vl, strlen(__vl), a);               \
}

#define SESS_ZVAL_STRINGN(vl, ln, a)                            \
{                                                                                                       \
        MAKE_STD_ZVAL(a);                                                               \
        ZVAL_STRINGL(a, vl, ln, 1);                                             \
}

static zval *ps_call_handler(zval *func, int argc, zval **argv TSRMLS_DC)
{
        int i;
        zval *retval = NULL;

        MAKE_STD_ZVAL(retval);
        if (call_user_function(EG(function_table), NULL, func, retval, argc, argv TSRMLS_CC) == FAILURE) {
                zval_ptr_dtor(&retval);
                retval = NULL;
        }

        for (i = 0; i < argc; i++) {
                zval_ptr_dtor(&argv[i]);
        }

        return retval;
}

#define STDVARS                                                         \
        zval *retval = NULL;                                    \
        int ret = FAILURE

#define PSF(a) PS(mod_user_names).name.ps_##a

#define FINISH                                                          \
        if (retval) {                                                   \
                convert_to_long(retval);                        \
                ret = Z_LVAL_P(retval);                         \
                zval_ptr_dtor(&retval);                         \
        }                                                                               \
        return ret

PS_OPEN_FUNC(user)
{
        zval *args[2];
        STDVARS;
        
        if (PSF(open) == NULL) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING,
                        "user session functions not defined");
                        
                return FAILURE;
        }

        SESS_ZVAL_STRING((char*)save_path, args[0]);
        SESS_ZVAL_STRING((char*)session_name, args[1]);

        retval = ps_call_handler(PSF(open), 2, args TSRMLS_CC);
        PS(mod_user_implemented) = 1;

        FINISH;
}

PS_CLOSE_FUNC(user)
{
        zend_bool bailout = 0;
        STDVARS;

        if (!PS(mod_user_implemented)) {
                /* already closed */
                return SUCCESS;
        }

        zend_try {
                retval = ps_call_handler(PSF(close), 0, NULL TSRMLS_CC);
        } zend_catch {
                bailout = 1;
        } zend_end_try();

        PS(mod_user_implemented) = 0;

        if (bailout) {
                if (retval) {
                        zval_ptr_dtor(&retval);
                }
                zend_bailout();
        }

        FINISH;
}

PS_READ_FUNC(user)
{
        zval *args[1];
        STDVARS;

        SESS_ZVAL_STRING((char*)key, args[0]);

        retval = ps_call_handler(PSF(read), 1, args TSRMLS_CC);

        if (retval) {
                if (Z_TYPE_P(retval) == IS_STRING) {
                        *val = estrndup(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
                        *vallen = Z_STRLEN_P(retval);
                        ret = SUCCESS;
                }
                zval_ptr_dtor(&retval);
        }

        return ret;
}

PS_WRITE_FUNC(user)
{
        zval *args[2];
        STDVARS;

        SESS_ZVAL_STRING((char*)key, args[0]);
        SESS_ZVAL_STRINGN((char*)val, vallen, args[1]);

        retval = ps_call_handler(PSF(write), 2, args TSRMLS_CC);

        FINISH;
}

PS_DESTROY_FUNC(user)
{
        zval *args[1];
        STDVARS;

        SESS_ZVAL_STRING((char*)key, args[0]);

        retval = ps_call_handler(PSF(destroy), 1, args TSRMLS_CC);

        FINISH;
}

PS_GC_FUNC(user)
{
        zval *args[1];
        STDVARS;

        SESS_ZVAL_LONG(maxlifetime, args[0]);

        retval = ps_call_handler(PSF(gc), 1, args TSRMLS_CC);

        FINISH;
}

PS_CREATE_SID_FUNC(user)
{
        /* maintain backwards compatibility */
        if (PSF(create_sid) != NULL) {
                char *id = NULL;
                zval *retval = NULL;

                retval = ps_call_handler(PSF(create_sid), 0, NULL TSRMLS_CC);

                if (retval) {
                        if (Z_TYPE_P(retval) == IS_STRING) {
                                id = estrndup(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
                        }
                        zval_ptr_dtor(&retval);
                }
                else {
                        php_error_docref(NULL TSRMLS_CC, E_ERROR, "No session id returned by function");
                        return NULL;
                }

                if (!id) {
                        php_error_docref(NULL TSRMLS_CC, E_ERROR, "Session id must be a string");
                        return NULL;
                }

                return id;
        }

        /* function as defined by PS_MOD */
        return php_session_create_id(mod_data, newlen TSRMLS_CC);
}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */