mirror of
https://gitlab.com/davical-project/davical.git
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296 lines
13 KiB
PHP
296 lines
13 KiB
PHP
<?php
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/**
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* @package davical
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* @author Andrew McMillan <andrew@mcmillan.net.nz>
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* @copyright Catalyst .Net Ltd, Morphoss Ltd <http://www.morphoss.com/>
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* @license http://gnu.org/copyleft/gpl.html GNU GPL v2
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*/
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// Ensure the configuration starts out as an empty object.
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$c = (object) array();
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// Ditto for a few other global things
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unset($session); unset($request); unset($dbconn);
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// An ultra-simple exception handler to catch errors that occur
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// before we get a more functional exception handler in place...
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function early_exception_handler($exception) {
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echo "Uncaught early exception: ", $exception->getMessage(), "\n";
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}
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set_exception_handler('early_exception_handler');
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// Default some of the configurable values
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$c->sysabbr = 'davical';
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$c->admin_email = 'admin@davical.example.com';
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$c->system_name = 'DAViCal CalDAV Server';
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$c->domain_name = (isset($_SERVER['SERVER_NAME'])?$_SERVER['SERVER_NAME']:$_SERVER['SERVER_ADDR']);
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$c->save_time_zone_defs = true;
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$c->collections_always_exist = false;
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$c->allow_get_email_visibility = false;
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$c->home_calendar_name = 'home';
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$c->enable_row_linking = true;
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$c->http_auth_mode = 'Basic';
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// $c->default_locale = array('es_MX', 'es_AR', 'es', 'pt'); // An array of locales to try, or just a single locale
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// $c->local_tzid = 'Pacific/Auckland'; // Perhaps we should read from /etc/timezone - I wonder how standard that is?
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$c->default_locale = 'en';
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$c->base_url = preg_replace('#/[^/]+\.php.*$#', '', $_SERVER['SCRIPT_NAME']);
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$c->base_directory = preg_replace('#/[^/]*$#', '', $_SERVER['DOCUMENT_ROOT']);
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$c->stylesheets = array( $c->base_url.'/davical.css' );
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$c->images = $c->base_url . '/images';
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// Add a default for newly created users
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$c->template_usr = array( 'active' => true,
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'locale' => 'en_EN',
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'date_format_type' => 'E',
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'email_ok' => date('Y-m-d')
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);
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$c->hide_TODO = true; // VTODO only visible to collection owner
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$c->readonly_webdav_collections = true; // WebDAV access is readonly
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// Ensure that ../inc is in our included paths as early as possible
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set_include_path( '../inc'. PATH_SEPARATOR. get_include_path());
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// Kind of private configuration values
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$c->total_query_time = 0;
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$c->dbg = array();
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// Utilities
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require_once('AWLUtilities.php');
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/** We actually discovered this and worked around it earlier, but we can't log it until the utilties are loaded */
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if ( !isset($_SERVER['SERVER_NAME']) ) {
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@dbg_error_log( 'WARN', "Your webserver is not setting the SERVER_NAME parameter. You may need to set \$c->domain_name in your configuration. Using IP address meanhwhile..." );
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}
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/**
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* Calculate the simplest form of reference to this page, excluding the PATH_INFO following the script name.
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*/
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$c->protocol_server_port_script = sprintf( '%s://%s%s%s',
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(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'? 'https' : 'http'),
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$_SERVER['SERVER_NAME'],
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(
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( (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on') && $_SERVER['SERVER_PORT'] == 80 )
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|| (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' && $_SERVER['SERVER_PORT'] == 443 )
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? ''
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: ':'.$_SERVER['SERVER_PORT']
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),
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($_SERVER['SCRIPT_NAME'] == '/index.php' ? '' : $_SERVER['SCRIPT_NAME']) );
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init_gettext( 'davical', '../locale' );
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/**
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* We use @file_exists because things like open_basedir might noisily deny
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* access which could break DAViCal completely by causing output to start
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* too early.
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*/
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if ( @file_exists('/etc/davical/'.$_SERVER['SERVER_NAME'].'-conf.php') ) {
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include('/etc/davical/'.$_SERVER['SERVER_NAME'].'-conf.php');
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}
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else if ( @file_exists('/etc/davical/config.php') ) {
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include('/etc/davical/config.php');
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}
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else if ( @file_exists('../config/config.php') ) {
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include('../config/config.php');
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}
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else {
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include('davical_configuration_missing.php');
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exit;
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}
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if ( isset($c->deny_put_collection) ) {
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@dbg_error_log( 'WARN', 'Deprecated "deny_put_collection" configuration item renamed to "readonly_webdav_collections"' );
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$c->readonly_webdav_collections = $c->deny_put_collection;
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}
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if ( !isset($c->page_title) ) $c->page_title = $c->system_name;
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if ( count($c->dbg) > 0 ) {
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// Only log this if debugging of some sort is turned on, somewhere
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@dbg_error_log( 'LOG', '==========> method =%s= =%s= =%s= =%s= =%s=',
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$_SERVER['REQUEST_METHOD'], $c->protocol_server_port_script, $_SERVER['PATH_INFO'], $c->base_url, $c->base_directory );
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}
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/**
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* Now that we have loaded the configuration file we can switch to a
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* default site locale. This may be overridden by each user.
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*/
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awl_set_locale($c->default_locale);
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/**
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* Work out our version
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*
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*/
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$c->code_version = 0;
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$c->version_string = '0.9.7.4'; // The actual version # is replaced into that during the build /release process
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if ( isset($c->version_string) && preg_match( '/(\d+)\.(\d+)\.(\d+)(.*)/', $c->version_string, $matches) ) {
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$c->code_major = $matches[1];
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$c->code_minor = $matches[2];
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$c->code_patch = $matches[3];
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$c->code_version = (($c->code_major * 1000) + $c->code_minor).'.'.$c->code_patch;
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dbg_error_log('caldav', 'Version (%d.%d.%d) == %s', $c->code_major, $c->code_minor, $c->code_patch, $c->code_version);
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header( sprintf('Server: %d.%d', $c->code_major, $c->code_minor) );
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}
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/**
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* Force the domain name to what was in the configuration file
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*/
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$_SERVER['SERVER_NAME'] = $c->domain_name;
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require_once('PgQuery.php');
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$c->want_dbversion = array(1,2,7);
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$c->schema_version = 0;
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$qry = new PgQuery( 'SELECT schema_major, schema_minor, schema_patch FROM awl_db_revision ORDER BY schema_id DESC LIMIT 1;' );
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if ( $qry->Exec('always') && $row = $qry->Fetch() ) {
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$c->schema_version = doubleval( sprintf( '%d%03d.%03d', $row->schema_major, $row->schema_minor, $row->schema_patch) );
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$c->wanted_version = doubleval( sprintf( '%d%03d.%03d', $c->want_dbversion[0], $c->want_dbversion[1], $c->want_dbversion[2]) );
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$c->schema_major = $row->schema_major;
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$c->schema_minor = $row->schema_minor;
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$c->schema_patch = $row->schema_patch;
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if ( $c->schema_version < $c->wanted_version ) {
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$c->messages[] = sprintf( 'Database schema needs upgrading. Current: %d.%d.%d, Desired: %d.%d.%d',
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$row->schema_major, $row->schema_minor, $row->schema_patch, $c->want_dbversion[0], $c->want_dbversion[1], $c->want_dbversion[2]);
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}
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}
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$_known_users_name = array();
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$_known_users_id = array();
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/**
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* Return a user record identified by a username, caching it for any subsequent lookup
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* @param string $username The username of the record to retrieve
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* @param boolean $use_cache Whether or not to use the cache (default: yes)
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*/
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function getUserByName( $username, $use_cache = true ) {
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// Provide some basic caching in case this ends up being overused.
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if ( $use_cache && isset( $_known_users_name[$username] ) ) return $_known_users_name[$username];
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$qry = new PgQuery( "SELECT *, to_char(updated at time zone 'GMT','Dy, DD Mon IYYY HH24:MI:SS \"GMT\"') AS modified FROM usr WHERE lower(username) = lower(?) ", $username );
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if ( $qry->Exec('always',__LINE__,__FILE__) && $qry->rows == 1 ) {
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$_known_users_name[$username] = $qry->Fetch();
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$id = $_known_users_name[$username]->user_no;
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$_known_users_id[$id] = $_known_users_name[$username];
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return $_known_users_name[$username];
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}
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return false;
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}
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/**
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* Return a user record identified by a user_no, caching it for any subsequent lookup
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* @param int $user_no The ID of the record to retrieve
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* @param boolean $use_cache Whether or not to use the cache (default: yes)
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*/
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function getUserByID( $user_no, $use_cache = true ) {
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// Provide some basic caching in case this ends up being overused.
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if ( $use_cache && isset( $_known_users_id[$user_no] ) ) return $_known_users_id[$user_no];
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$qry = new PgQuery( "SELECT *, to_char(updated at time zone 'GMT','Dy, DD Mon IYYY HH24:MI:SS \"GMT\"') AS modified FROM usr WHERE user_no = ? ", intval($user_no) );
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if ( $qry->Exec('always',__LINE__,__FILE__) && $qry->rows == 1 ) {
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$_known_users_id[$user_no] = $qry->Fetch();
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$name = $_known_users_id[$user_no]->username;
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$_known_users_name[$name] = $_known_users_id[$user_no];
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return $_known_users_id[$user_no];
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}
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return false;
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}
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/**
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* Return the HTTP status code description for a given code. Hopefully
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* this is an efficient way to code this.
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* @return string The text for a give HTTP status code, in english
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*/
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function getStatusMessage($status) {
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switch( $status ) {
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case 100: $ans = 'Continue'; break;
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case 101: $ans = 'Switching Protocols'; break;
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case 200: $ans = 'OK'; break;
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case 201: $ans = 'Created'; break;
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case 202: $ans = 'Accepted'; break;
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case 203: $ans = 'Non-Authoritative Information'; break;
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case 204: $ans = 'No Content'; break;
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case 205: $ans = 'Reset Content'; break;
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case 206: $ans = 'Partial Content'; break;
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case 207: $ans = 'Multi-Status'; break;
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case 300: $ans = 'Multiple Choices'; break;
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case 301: $ans = 'Moved Permanently'; break;
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case 302: $ans = 'Found'; break;
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case 303: $ans = 'See Other'; break;
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case 304: $ans = 'Not Modified'; break;
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case 305: $ans = 'Use Proxy'; break;
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case 307: $ans = 'Temporary Redirect'; break;
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case 400: $ans = 'Bad Request'; break;
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case 401: $ans = 'Unauthorized'; break;
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case 402: $ans = 'Payment Required'; break;
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case 403: $ans = 'Forbidden'; break;
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case 404: $ans = 'Not Found'; break;
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case 405: $ans = 'Method Not Allowed'; break;
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case 406: $ans = 'Not Acceptable'; break;
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case 407: $ans = 'Proxy Authentication Required'; break;
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case 408: $ans = 'Request Timeout'; break;
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case 409: $ans = 'Conflict'; break;
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case 410: $ans = 'Gone'; break;
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case 411: $ans = 'Length Required'; break;
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case 412: $ans = 'Precondition Failed'; break;
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case 413: $ans = 'Request Entity Too Large'; break;
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case 414: $ans = 'Request-URI Too Long'; break;
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case 415: $ans = 'Unsupported Media Type'; break;
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case 416: $ans = 'Requested Range Not Satisfiable'; break;
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case 417: $ans = 'Expectation Failed'; break;
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case 422: $ans = 'Unprocessable Entity'; break;
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case 423: $ans = 'Locked'; break;
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case 424: $ans = 'Failed Dependency'; break;
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case 500: $ans = 'Internal Server Error'; break;
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case 501: $ans = 'Not Implemented'; break;
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case 502: $ans = 'Bad Gateway'; break;
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case 503: $ans = 'Service Unavailable'; break;
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case 504: $ans = 'Gateway Timeout'; break;
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case 505: $ans = 'HTTP Version Not Supported'; break;
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default: $ans = 'Unknown HTTP Status Code '.$status;
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}
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return $ans;
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}
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/**
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* Construct a URL from the supplied dav_name. The URL will be urlencoded,
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* except for any '/' characters in it.
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* @param string $partial_path The part of the path after the script name
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*/
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function ConstructURL( $partial_path, $force_script = false ) {
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global $c;
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$partial_path = rawurlencode($partial_path);
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$partial_path = str_replace( '%2F', '/', $partial_path);
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if ( ! isset($c->_url_script_path) ) {
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$c->_url_script_path = (preg_match('#/$#', $c->protocol_server_port_script) ? 'caldav.php' : '');
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$c->_url_script_path = $c->protocol_server_port_script . $c->_url_script_path;
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}
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$url = $c->_url_script_path;
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if ( $force_script ) {
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if ( ! preg_match( '#/caldav\.php$#', $url ) ) $url .= '/caldav.php';
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}
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$url .= $partial_path;
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$url = preg_replace( '#^(https?://.+)//#', '$1/', $url ); // Ensure we don't double any '/'
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$url = preg_replace('#^https?://[^/]+#', '', $url ); // Remove any protocol + hostname portion
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return $url;
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}
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/**
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* Convert a date from ISO format into the sad old HTTP format.
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* @param string $isodate The date to convert
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*/
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function ISODateToHTTPDate( $isodate ) {
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// Use strtotime since strptime is not available on Windows platform.
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return( gmstrftime('%a, %d %b %Y %T GMT', strtotime($isodate)) );
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}
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