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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
<?php
/**
* Bootstraps and starts the Elgg engine.
*
* This file loads the full Elgg engine, checks the installation
* state, then emits a series of events to finish booting Elgg:
* - {@elgg_event boot system}
* - {@elgg_event plugins_boot system}
* - {@elgg_event init system}
*
* If Elgg is uninstalled, the browser will be redirected to an
* installation page.
*
* If in an installation, attempts to save the .htaccess and
* settings.php files during {@link sanitised()}
*
* @warning The view type is set to 'failsafe' during boot. This means calling
* {@link elgg_get_viewtype()} will return 'failsafe' in any function called by
* the events listed above regardless of actual view. The original view is restored
* after booting.
*
* @see install.php
* @package Elgg.Core
* @subpackage Core
*/
/**
* The time with microseconds when the Elgg engine was started.
*
* @global float
*/
global $START_MICROTIME;
$START_MICROTIME = microtime(true);
/**
* Configuration values.
*
* The $CONFIG global contains configuration values required
* for running Elgg as defined in the settings.php file. The following
* array keys are defined by core Elgg:
*
* Plugin authors are encouraged to use get_config() instead of accessing the
* global directly.
*
* @see get_config()
* @see engine/settings.php
* @global stdClass $CONFIG
*/
global $CONFIG;
if (!isset($CONFIG)) {
$CONFIG = new stdClass;
}
$lib_dir = dirname(__FILE__) . '/lib/';
/**
* The minimum required libs to bootstrap an Elgg installation.
*
* @var array
*/
$required_files = array(
'exceptions.php', 'elgglib.php', 'views.php', 'access.php', 'system_log.php', 'export.php',
'sessions.php', 'languages.php', 'input.php', 'install.php', 'cache.php', 'output.php'
);
// include bootstraping libs
foreach ($required_files as $file) {
$path = $lib_dir . $file;
if (!include($path)) {
echo "Could not load file '$path'. "
. 'Please check your Elgg installation for all required files.';
exit;
}
}
// Use fallback view until sanitised
$oldview = get_input('view', 'default');
set_input('view', 'failsafe');
// Register the error handler
set_error_handler('__elgg_php_error_handler');
set_exception_handler('__elgg_php_exception_handler');
// attempt to save settings.php and .htaccess if in installation.
if ($sanitised = sanitised()) {
/**
* Load the system settings
*/
if (!include_once(dirname(__FILE__) . "/settings.php")) {
throw new InstallationException("Elgg could not load the settings file.");
}
// Get config
global $CONFIG;
// load the rest of the library files from engine/lib/
$lib_files = array(
// these need to be loaded first.
'database.php', 'actions.php',
'admin.php', 'annotations.php', 'api.php', 'cache.php',
'calendar.php', 'configuration.php', 'cron.php', 'entities.php',
'export.php', 'extender.php', 'filestore.php', 'group.php',
'input.php', 'install.php', 'location.php', 'mb_wrapper.php',
'memcache.php', 'metadata.php', 'metastrings.php', 'notification.php',
'objects.php', 'opendd.php', 'pagehandler.php',
'pageowner.php', 'pam.php', 'plugins.php', 'query.php',
'relationships.php', 'river.php', 'sites.php', 'social.php',
'statistics.php', 'system_log.php', 'tags.php', 'usersettings.php',
'users.php', 'version.php', 'widgets.php', 'xml.php', 'xml-rpc.php'
);
foreach($lib_files as $file) {
$file = $lib_dir . $file;
elgg_log("Loading $file...");
if (!include_once($file)) {
throw new InstallationException("Could not load {$file}");
}
}
} else {
throw new InstallationException(elgg_echo('installation:error:configuration'));
}
// Autodetect some default configuration settings
set_default_config();
// Trigger boot events for core. Plugins can't hook
// into this because they haven't been loaded yet.
trigger_elgg_event('boot', 'system');
// Check if installed
$installed = is_installed();
$db_installed = is_db_installed();
/**
* Forward if Elgg is not installed.
*/
if ((!$installed || !$db_installed)
&& !substr_count($_SERVER["PHP_SELF"], "install.php")
&& !substr_count($_SERVER["PHP_SELF"], "css.php")
&& !substr_count($_SERVER["PHP_SELF"], "action_handler.php")) {
header("Location: install.php");
exit;
}
// Load plugins
if (($installed) && ($db_installed) && ($sanitised)) {
load_plugins();
trigger_elgg_event('plugins_boot', 'system');
}
// Trigger system init event for plugins
if (!substr_count($_SERVER["PHP_SELF"], "install.php")
&& !substr_count($_SERVER["PHP_SELF"], "setup.php")) {
trigger_elgg_event('init', 'system');
}
// System booted, return to normal view
if (!elgg_is_valid_view_type($oldview)) {
if (empty($CONFIG->view)) {
$oldview = 'default';
} else {
$oldview = $CONFIG->view;
}
}
set_input('view', $oldview);
// Regenerate the simple cache if expired.
// Don't do it on upgrade, because upgrade does it itself.
if (($installed) && ($db_installed) && !(defined('upgrading') && upgrading == 'upgrading')) {
$lastupdate = datalist_get("simplecache_lastupdate_$oldview");
$lastcached = datalist_get("simplecache_lastcached_$oldview");
if ($lastupdate == 0 || $lastcached < $lastupdate) {
elgg_view_regenerate_simplecache($oldview);
}
// needs to be set for links in html head
$CONFIG->lastcache = $lastcached;
}
|
