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<?php
if ( preg_match('{/always.php$}', $_SERVER['SCRIPT_NAME'] ) ) header('Location: index.php');
$c = (object) array();
$c->script_start_time = microtime(true);
unset($session); unset($request); unset($dbconn); unset($_awl_dbconn); unset($include_properties);
function early_exception_handler($e) {
if ( !headers_sent() ) {
header("Content-type: text/plain");
header( sprintf("HTTP/1.1 %d %s", 500, getStatusMessage(500)) );
}
else {
echo "<pre>\n";
}
try {
@ob_flush();
}
catch( Exception $ignored ) {}
echo "Exception [".$e->getCode()."] ".$e->getmessage()."\n";
echo "At line ", $e->getLine(), " of ", $e->getFile(), "\n";
echo "================= Stack Trace ===================\n";
$trace = array_reverse($e->getTrace());
foreach( $trace AS $k => $v ) {
printf( "%s[%d] %s%s%s()\n", $v['file'], $v['line'], (isset($v['class'])?$v['class']:''), (isset($v['type'])?$v['type']:''), (isset($v['function'])?$v['function']:'') );
}
}
set_exception_handler('early_exception_handler');
function early_catch_fatal_error() {
global $request;
if ( !empty($request) ) return;
$e = error_get_last();
if (isset($e['type']) && $e['type'] == E_ERROR) {
if ( !headers_sent() ) {
header("Content-type: text/plain");
header( sprintf("HTTP/1.1 %d %s", 500, getStatusMessage(500)) );
}
echo "PHP Fatal error: ".$e['message']."\n";
echo "At line ", $e['line'], " of ", $e['file'], "\n";
error_log("PHP Fatal Error: '".$e['message']. "' at line ". $e['line']. " of ". $e['file']);
}
}
register_shutdown_function('early_catch_fatal_error');
$c->default_timezone = ini_get ( 'date.timezone' );
if (empty ( $c->default_timezone )) {
$c->default_timezone = 'UTC';
if (isset ( $_SERVER ['HTTP_X_DAVICAL_TESTCASE'] )) {
$c->default_timezone = 'Pacific/Auckland';
}
}
$c->sysabbr = 'davical';
$c->admin_email = 'admin@davical.example.com';
$c->system_name = 'DAViCal CalDAV Server';
$c->domain_name = (isset($_SERVER['SERVER_NAME'])?$_SERVER['SERVER_NAME']:$_SERVER['SERVER_ADDR']);
$c->save_time_zone_defs = true;
$c->collections_always_exist = false;
$c->allow_get_email_visibility = false;
$c->permission_scan_depth = 2;
$c->expand_pdo_parameters = true;
$c->home_calendar_name = 'calendar';
$c->home_addressbook_name = 'addresses';
$c->enable_row_linking = true;
$c->enable_scheduling = false;
$c->http_auth_mode = 'Basic';
$c->default_locale = 'en';
$c->locale_path = '../locale';
$c->base_url = preg_replace('#/[^/]+\.php.*$#', '', $_SERVER['SCRIPT_NAME']);
$c->base_directory = preg_replace('#/[^/]*$#', '', $_SERVER['DOCUMENT_ROOT']);
$c->default_privileges = array('read-free-busy', 'schedule-deliver');
$c->enable_auto_schedule = true;
$c->schema_major = $c->schema_minor = $c->schema_patch = 0;
$c->stylesheets = array( $c->base_url.'/davical.css' );
$c->images = $c->base_url . '/images';
$c->template_usr = array( 'active' => true,
'locale' => 'en_GB',
'date_format_type' => 'E',
'email_ok' => date('Y-m-d')
);
$c->hide_TODO = true;
$c->readonly_webdav_collections = true;
$c->total_query_time = 0;
$c->dbg = array();
if ( isset($skip_errors) ) $skip_errors = true;
if ( ! @include_once('AWLUtilities.php') ) {
if ( isset($skip_errors) ) $skip_errors = false;
$try_paths = array(
'../../awl/inc'
, '/usr/share/awl/inc'
, '/usr/share/php/awl/inc'
, '/usr/local/share/awl/inc'
);
foreach( $try_paths AS $awl_include_path ) {
if ( @file_exists($awl_include_path.'/AWLUtilities.php') ) {
set_include_path( $awl_include_path. PATH_SEPARATOR. get_include_path());
break;
}
}
if ( ! @include_once('AWLUtilities.php') ) {
echo "Could not find the AWL libraries. Are they installed? Check your include_path in php.ini!\n";
@ob_flush(); exit(0);
}
}
if ( isset($skip_errors) ) $skip_errors = false;
set_include_path( '../inc'. PATH_SEPARATOR. get_include_path());
if ( !isset($_SERVER['SERVER_NAME']) ) {
@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..." );
}
ob_start( );
if ( @file_exists('/etc/davical/'.$_SERVER['SERVER_NAME'].'-conf.php') ) {
include('/etc/davical/'.$_SERVER['SERVER_NAME'].'-conf.php');
}
else if ( @file_exists('/etc/davical/config.php') ) {
include('/etc/davical/config.php');
}
else if ( @file_exists('/usr/local/etc/davical/'.$_SERVER['SERVER_NAME'].'-conf.php') ) {
include('/usr/local/etc/davical/'.$_SERVER['SERVER_NAME'].'-conf.php');
}
else if ( @file_exists('/usr/local/etc/davical/config.php') ) {
include('/usr/local/etc/davical/config.php');
}
else if ( @file_exists('../config/config.php') ) {
include('../config/config.php');
}
else if ( @file_exists('config/config.php') ) {
include('config/config.php');
}
else {
include('davical_configuration_missing.php');
@ob_flush(); exit(0);
}
$config_warnings = trim(ob_get_contents());
ob_end_clean();
if ( isset($c->trust_x_forwarded) && $c->trust_x_forwarded ) {
if ( isset($_SERVER['X-Real-IP']) ) {
$_SERVER['REMOTE_ADDR'] = $_SERVER['X-Real-IP'];
} elseif ( isset($_SERVER['X-Forwarded-For']) ) {
list($_SERVER['REMOTE_ADDR'], $rest) = explode( ',', $_SERVER['X-Forwarded-For']);
}
if ( isset($_SERVER['X-Forwarded-Proto']) ) {
if ($_SERVER['X-Forwarded-Proto'] == 'https') {
$_SERVER['HTTPS'] = 'on';
} else {
$_SERVER['HTTPS'] = 'off';
}
}
if ( isset($_SERVER['X-Forwarded-Port']) ) {
$_SERVER['SERVER_PORT'] = $_SERVER['X-Forwarded-Port'];
}
}
$c->protocol_server_port = sprintf( '%s://%s%s',
(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'? 'https' : 'http'),
$_SERVER['SERVER_NAME'],
(
( (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on')
&& (!isset($_SERVER['SERVER_PORT']) || $_SERVER['SERVER_PORT'] == 80) )
|| ( isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'
&& (!isset($_SERVER['SERVER_PORT']) || $_SERVER['SERVER_PORT'] == 443) )
? ''
: ':'.$_SERVER['SERVER_PORT']
) );
$c->protocol_server_port_script = $c->protocol_server_port . ($_SERVER['SCRIPT_NAME'] == '/index.php' ? '' : $_SERVER['SCRIPT_NAME']);
if ( !isset($c->page_title) ) $c->page_title = $c->system_name;
if ( isset($_SERVER['HTTP_X_DAVICAL_TESTCASE']) ) {
@dbg_error_log( 'LOG', '==========> Test case =%s=', $_SERVER['HTTP_X_DAVICAL_TESTCASE'] );
}
else if ( isset($c->dbg['script_start']) && $c->dbg['script_start'] ) {
@dbg_error_log( 'LOG', '==========> method =%s= =%s= =%s= =%s= =%s=',
$_SERVER['REQUEST_METHOD'], $c->protocol_server_port_script, (isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '$_SERVER[PATH_INFO] undefined'), $c->base_url, $c->base_directory );
}
putenv("LANG=". $c->default_locale);
if ( function_exists('awl_set_locale') ) {
awl_set_locale($c->default_locale);
init_gettext( 'davical', $c->locale_path );
}
$c->code_version = 0;
$c->want_awl_version = '0.57';
$c->version_string = '1.1.5';
if ( isset($c->version_string) && preg_match( '/(\d+)\.(\d+)\.(\d+)(.*)/', $c->version_string, $matches) ) {
$c->code_major = $matches[1];
$c->code_minor = $matches[2];
$c->code_patch = $matches[3];
$c->code_version = (($c->code_major * 1000) + $c->code_minor).'.'.$c->code_patch;
dbg_error_log('caldav', 'Version (%d.%d.%d) == %s', $c->code_major, $c->code_minor, $c->code_patch, $c->code_version);
@header( sprintf('Server: %d.%d', $c->code_major, $c->code_minor) );
}
$_SERVER['SERVER_NAME'] = $c->domain_name;
require_once('AwlQuery.php');
$c->want_dbversion = array(1,3,2);
$c->schema_version = 0;
$qry = new AwlQuery( 'SELECT schema_major, schema_minor, schema_patch FROM awl_db_revision ORDER BY schema_id DESC LIMIT 1;' );
if ( $qry->Exec('always',__LINE__,__FILE__) && $row = $qry->Fetch() ) {
$c->schema_version = doubleval( sprintf( '%d%03d.%03d', $row->schema_major, $row->schema_minor, $row->schema_patch) );
$c->wanted_version = doubleval( sprintf( '%d%03d.%03d', $c->want_dbversion[0], $c->want_dbversion[1], $c->want_dbversion[2]) );
$c->schema_major = $row->schema_major;
$c->schema_minor = $row->schema_minor;
$c->schema_patch = $row->schema_patch;
if ( $c->schema_version < $c->wanted_version ) {
$c->messages[] = sprintf( 'Database schema needs upgrading. Current: %d.%d.%d, Desired: %d.%d.%d',
$row->schema_major, $row->schema_minor, $row->schema_patch, $c->want_dbversion[0], $c->want_dbversion[1], $c->want_dbversion[2]);
}
if ( isset($c->default_timezone) ) {
$qry->QDo('SET TIMEZONE TO ?', $c->default_timezone );
}
}
date_default_timezone_set ( $c->default_timezone );
require_once('Principal.php');
function getStatusMessage($status) {
switch( $status ) {
case 100: $ans = 'Continue'; break;
case 101: $ans = 'Switching Protocols'; break;
case 200: $ans = 'OK'; break;
case 201: $ans = 'Created'; break;
case 202: $ans = 'Accepted'; break;
case 203: $ans = 'Non-Authoritative Information'; break;
case 204: $ans = 'No Content'; break;
case 205: $ans = 'Reset Content'; break;
case 206: $ans = 'Partial Content'; break;
case 207: $ans = 'Multi-Status'; break;
case 300: $ans = 'Multiple Choices'; break;
case 301: $ans = 'Moved Permanently'; break;
case 302: $ans = 'Found'; break;
case 303: $ans = 'See Other'; break;
case 304: $ans = 'Not Modified'; break;
case 305: $ans = 'Use Proxy'; break;
case 307: $ans = 'Temporary Redirect'; break;
case 400: $ans = 'Bad Request'; break;
case 401: $ans = 'Unauthorized'; break;
case 402: $ans = 'Payment Required'; break;
case 403: $ans = 'Forbidden'; break;
case 404: $ans = 'Not Found'; break;
case 405: $ans = 'Method Not Allowed'; break;
case 406: $ans = 'Not Acceptable'; break;
case 407: $ans = 'Proxy Authentication Required'; break;
case 408: $ans = 'Request Timeout'; break;
case 409: $ans = 'Conflict'; break;
case 410: $ans = 'Gone'; break;
case 411: $ans = 'Length Required'; break;
case 412: $ans = 'Precondition Failed'; break;
case 413: $ans = 'Request Entity Too Large'; break;
case 414: $ans = 'Request-URI Too Long'; break;
case 415: $ans = 'Unsupported Media Type'; break;
case 416: $ans = 'Requested Range Not Satisfiable'; break;
case 417: $ans = 'Expectation Failed'; break;
case 422: $ans = 'Unprocessable Entity'; break;
case 423: $ans = 'Locked'; break;
case 424: $ans = 'Failed Dependency'; break;
case 500: $ans = 'Internal Server Error'; break;
case 501: $ans = 'Not Implemented'; break;
case 502: $ans = 'Bad Gateway'; break;
case 503: $ans = 'Service Unavailable'; break;
case 504: $ans = 'Gateway Timeout'; break;
case 505: $ans = 'HTTP Version Not Supported'; break;
default: $ans = 'Unknown HTTP Status Code '.$status;
}
return $ans;
}
function ConstructURL( $partial_path, $force_script = false ) {
global $c;
if ( ! isset($c->_url_script_path) ) {
$c->protocol_server_port_script = str_replace( 'index.php', 'caldav.php', $c->protocol_server_port_script);
$c->_url_script_path = (preg_match('#/$#', $c->protocol_server_port_script) ? 'caldav.php' : '');
$c->_url_script_path = $c->protocol_server_port_script . $c->_url_script_path;
}
$url = $c->_url_script_path;
if ( $force_script ) {
if ( ! preg_match( '#/caldav\.php$#', $url ) ) $url .= '/caldav.php';
}
$url .= str_replace( '%2F', '/', rawurlencode($partial_path));
$url = preg_replace( '#^(https?://.+)//#', '$1/', $url );
$url = preg_replace('#^https?://[^/]+#', '', $url );
if ( strstr($url, 'caldav.php/caldav.php') !== false ) {
$url = str_replace( 'caldav.php/caldav.php', 'caldav.php', $url );
}
return $url;
}
function DeconstructURL( $url, $force_script = false ) {
global $c;
$dav_name = rawurldecode($url);
$dav_name = trim($dav_name);
if ( preg_match( '#^(/[^/]+/[^/]+).ics$#', $dav_name, $matches ) ) {
$dav_name = $matches[1]. '/';
}
if ( !isset($c->deconstruction_base_path) ) $c->deconstruction_base_path = ConstructURL('/');
if ( preg_match( '%^(.*?)'.str_replace('%', '\\%',$c->deconstruction_base_path).'(.*)$%', $dav_name, $matches ) ) {
if ( $matches[1] == '' || $matches[1] == $c->protocol_server_port ) {
$dav_name = $matches[2];
}
}
if ( strstr($dav_name,'//') ) $dav_name = preg_replace( '#//+#', '/', $dav_name);
if ( substr($dav_name,0,1) != '/' ) $dav_name = '/'.$dav_name;
return $dav_name;
}
function ISODateToHTTPDate( $isodate ) {
$month = gmstrftime('%m', strtotime($isodate));
switch( intval($month) ) {
case 1: $month = 'Jan'; break;
case 2: $month = 'Feb'; break;
case 3: $month = 'Mar'; break;
case 4: $month = 'Apr'; break;
case 5: $month = 'May'; break;
case 6: $month = 'Jun'; break;
case 7: $month = 'Jul'; break;
case 8: $month = 'Aug'; break;
case 9: $month = 'Sep'; break;
case 10: $month = 'Oct'; break;
case 11: $month = 'Nov'; break;
case 12: $month = 'Dec'; break;
default:
throw new Exception('Invalid month '.$month);
}
return( gmstrftime('%a, %d '.$month.' %Y %H:%M:%S GMT', strtotime($isodate)) );
}
function DateToISODate( $indate, $in_utc=false ) {
if ( $in_utc ) return( gmdate('Ymd\THis\Z', strtotime($indate)) );
return( date('c', strtotime($indate)) );
}
define("DAVICAL_MAXPRIV", "65535");
define("DAVICAL_ADDRESSBOOK_MAXPRIV", "1023");
function privilege_to_bits( $raw_privs ) {
$out_priv = 0;
if ( gettype($raw_privs) == 'string' ) $raw_privs = array( $raw_privs );
if ( ! is_array($raw_privs) ) $raw_privs = array($raw_privs);
foreach( $raw_privs AS $priv ) {
$trim_priv = trim(strtolower(preg_replace( '/^.*:/', '', $priv)));
switch( $trim_priv ) {
case 'read' : $out_priv |= 1; break;
case 'write-properties' : $out_priv |= 2; break;
case 'write-content' : $out_priv |= 4; break;
case 'unlock' : $out_priv |= 8; break;
case 'read-acl' : $out_priv |= 16; break;
case 'read-current-user-privilege-set' : $out_priv |= 32; break;
case 'bind' : $out_priv |= 64; break;
case 'unbind' : $out_priv |= 128; break;
case 'write-acl' : $out_priv |= 256; break;
case 'read-free-busy' : $out_priv |= 512; break;
case 'schedule-deliver-invite' : $out_priv |= 1024; break;
case 'schedule-deliver-reply' : $out_priv |= 2048; break;
case 'schedule-query-freebusy' : $out_priv |= 4096; break;
case 'schedule-send-invite' : $out_priv |= 8192; break;
case 'schedule-send-reply' : $out_priv |= 16384; break;
case 'schedule-send-freebusy' : $out_priv |= 32768; break;
case 'write' : $out_priv |= 198; break;
case 'schedule-deliver' : $out_priv |= 7168; break;
case 'schedule-send' : $out_priv |= 57344; break;
case 'all' : $out_priv = DAVICAL_MAXPRIV; break;
case 'fake_privilege_for_input' : break;
default:
dbg_error_log( 'ERROR', 'Cannot convert privilege of "%s" into bits.', $priv );
}
}
if ( ($out_priv & DAVICAL_MAXPRIV) >= DAVICAL_MAXPRIV ) $out_priv = pow(2,24) - 1;
return $out_priv;
}
function bits_to_privilege( $raw_bits, $resourcetype = 'resource' ) {
$out_priv = array();
if ( is_string($raw_bits) ) {
$raw_bits = bindec($raw_bits);
}
if ( ($raw_bits & DAVICAL_MAXPRIV) == DAVICAL_MAXPRIV ) $out_priv[] = 'all';
if ( ($raw_bits & 1) != 0 ) $out_priv[] = 'DAV::read';
if ( ($raw_bits & 8) != 0 ) $out_priv[] = 'DAV::unlock';
if ( ($raw_bits & 16) != 0 ) $out_priv[] = 'DAV::read-acl';
if ( ($raw_bits & 32) != 0 ) $out_priv[] = 'DAV::read-current-user-privilege-set';
if ( ($raw_bits & 256) != 0 ) $out_priv[] = 'DAV::write-acl';
if ( ($resourcetype == 'calendar' || $resourcetype == 'proxy' || $resourcetype == '*') && ($raw_bits & 512) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:read-free-busy';
if ( ($raw_bits & 198) != 0 ) {
if ( ($raw_bits & 198) == 198 ) $out_priv[] = 'DAV::write';
if ( ($raw_bits & 2) != 0 ) $out_priv[] = 'DAV::write-properties';
if ( ($raw_bits & 4) != 0 ) $out_priv[] = 'DAV::write-content';
if ( ($raw_bits & 64) != 0 ) $out_priv[] = 'DAV::bind';
if ( ($raw_bits & 128) != 0 ) $out_priv[] = 'DAV::unbind';
}
if ( ($resourcetype == 'schedule-inbox' || $resourcetype == '*') && ($raw_bits & 7168) != 0 ) {
if ( ($raw_bits & 7168) == 7168 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-deliver';
if ( ($raw_bits & 1024) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-deliver-invite';
if ( ($raw_bits & 2048) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-deliver-reply';
if ( ($raw_bits & 4096) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-query-freebusy';
}
if ( ($resourcetype == 'schedule-outbox' || $resourcetype == '*') && ($raw_bits & 57344) != 0 ) {
if ( ($raw_bits & 57344) == 57344 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-send';
if ( ($raw_bits & 8192) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-send-invite';
if ( ($raw_bits & 16384) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-send-reply';
if ( ($raw_bits & 32768) != 0 ) $out_priv[] = 'urn:ietf:params:xml:ns:caldav:schedule-send-freebusy';
}
return $out_priv;
}
function privileges_to_XML( $privilege_names, &$xmldoc=null ) {
if ( !isset($xmldoc) && isset($GLOBALS['reply']) ) $xmldoc = $GLOBALS['reply'];
$privileges = array();
foreach( $privilege_names AS $k ) {
$privilege = new XMLElement('privilege');
if ( isset($xmldoc) )
$xmldoc->NSElement($privilege,$k);
else
$privilege->NewElement($k);
$privileges[] = $privilege;
}
return $privileges;
}