1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
<?php
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#
# Application initialization [Thomas Lange <code@nerdmind.de>] #
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#
# #
# This file brings the application up! #
# #
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#
#===============================================================================
# Document root
#===============================================================================
define('ROOT', dirname(__DIR__).'/');
#===============================================================================
# Autoload register for classes
#===============================================================================
spl_autoload_register(function($classname) {
$classname = str_replace('\\', '/', $classname);
require "namespace/{$classname}.php";
});
#===============================================================================
# Exception handler for non-caught exceptions
#===============================================================================
set_exception_handler(function($Exception) {
http_response_code(503);
exit($Exception->getMessage());
});
#===============================================================================
# Initialize HTTP class and remove all arrays from $_GET and $_POST
#===============================================================================
HTTP::init($_GET, $_POST, $_FILES, TRUE);
#===============================================================================
# Include configuration
#===============================================================================
require 'configuration.php';
#===============================================================================
# Overwrite configuration if admin
#===============================================================================
if(defined('ADMINISTRATION') AND ADMINISTRATION === TRUE) {
#===========================================================================
# Enable sessions
#===========================================================================
session_start();
#===========================================================================
# Authentication check
#===========================================================================
if(defined('AUTHENTICATION') AND !Application::isAuthenticated()) {
HTTP::redirect(Application::getAdminURL('auth.php'));
}
#===========================================================================
# Overwrite configuration
#===========================================================================
Application::set('CORE.LANGUAGE', Application::get('ADMIN.LANGUAGE'));
Application::set('TEMPLATE.NAME', Application::get('ADMIN.TEMPLATE'));
Application::set('TEMPLATE.LANG', Application::get('ADMIN.LANGUAGE'));
}
#===============================================================================
# Include functions
#===============================================================================
require 'functions.php';
#===============================================================================
# TRY: PDOException
#===============================================================================
try {
$Language = Application::getLanguage();
$Database = Application::getDatabase();
$Database->setAttribute($Database::ATTR_DEFAULT_FETCH_MODE, $Database::FETCH_OBJ);
$Database->setAttribute($Database::ATTR_ERRMODE, $Database::ERRMODE_EXCEPTION);
}
#===============================================================================
# CATCH: PDOException
#===============================================================================
catch(PDOException $Exception) {
http_response_code(503);
exit("PDO database connection error: {$Exception->getMessage()}");
}
#===============================================================================
# Check if "304 Not Modified" and ETag header should be send
#===============================================================================
if(Application::get('CORE.SEND_304') === TRUE AND !defined('ADMINISTRATION')) {
#===========================================================================
# Select edit time from last edited items (page, post, user)
#===========================================================================
$execute = 'SELECT time_update FROM %s ORDER BY time_update DESC LIMIT 1';
$PageStatement = $Database->query(sprintf($execute, Page\Attribute::TABLE));
$PostStatement = $Database->query(sprintf($execute, Post\Attribute::TABLE));
$UserStatement = $Database->query(sprintf($execute, User\Attribute::TABLE));
#===========================================================================
# Define HTTP ETag header identifier
#===========================================================================
$HTTP_ETAG_IDENTIFIER = sha1(implode(NULL, [
serialize(Application::getConfiguration()),
$PageStatement->fetchColumn(),
$PostStatement->fetchColumn(),
$UserStatement->fetchColumn(),
'CUSTOM-STRING-0123456789'
]));
#===========================================================================
# Send ETag header within the HTTP response
#===========================================================================
HTTP::responseHeader(HTTP::HEADER_ETAG, "\"{$HTTP_ETAG_IDENTIFIER}\"");
#===========================================================================
# Validate ETag header from the HTTP request
#===========================================================================
if(isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
$HTTP_IF_NONE_MATCH = $_SERVER['HTTP_IF_NONE_MATCH'];
$HTTP_IF_NONE_MATCH = trim($HTTP_IF_NONE_MATCH, '"');
# If the server adds the extensions to the response header
$HTTP_IF_NONE_MATCH = rtrim($HTTP_IF_NONE_MATCH, '-br');
$HTTP_IF_NONE_MATCH = rtrim($HTTP_IF_NONE_MATCH, '-gzip');
if($HTTP_IF_NONE_MATCH === $HTTP_ETAG_IDENTIFIER) {
http_response_code(304);
exit();
}
}
}
?>
|
