mirror of
https://gitlab.com/davical-project/davical.git
synced 2026-01-28 00:43:37 +00:00
93 lines
3.7 KiB
PHP
93 lines
3.7 KiB
PHP
<?php
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require_once("always.php");
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dbg_error_log( "ics", " User agent: %s", $_SERVER['HTTP_USER_AGENT'] );
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require_once("BasicAuthSession.php");
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require_once("iCalendar.php");
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$raw_headers = apache_request_headers();
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$raw_post = file_get_contents ( 'php://input');
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if ( isset($debugging) && isset($_GET['method']) ) {
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$_SERVER['REQUEST_METHOD'] = $_GET['method'];
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}
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/**
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* Our path is /<script name>/<user name>/<user controlled> if it ends in
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* a trailing '/' then it is referring to a DAV 'collection' but otherwise
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* it is referring to a DAV data item.
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*
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* Permissions are controlled as follows:
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* 1. if there is no <user name> component, the request has read privileges
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* 2. if the requester is an admin, the request has read/write priviliges
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* 3. if there is a <user name> component which matches the logged on user
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* then the request has read/write privileges
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* 4. otherwise we query the defined relationships between users and use
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* the maximum privileges returned from that analysis.
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*/
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$request_path = $_SERVER['PATH_INFO'];
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$path_split = preg_split('#/+#', $request_path );
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$permissions = array();
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if ( !isset($path_split[1]) || $path_split[1] == '' ) {
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dbg_error_log( "caldav", "No useful path split possible" );
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unset($path_user_no);
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unset($path_username);
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$permissions = array("read" => 'read' );
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}
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else {
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$path_username = $path_split[1];
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@dbg_error_log( "caldav", "Path split into at least /// %s /// %s /// %s", $path_split[1], $path_split[2], $path_split[3] );
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$qry = new PgQuery( "SELECT * FROM usr WHERE username = ?;", $path_username );
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if ( $qry->Exec("caldav") && $path_user_record = $qry->Fetch() ) {
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$path_user_no = $path_user_record->user_no;
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}
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if ( $session->AllowedTo("Admin") || $session->user_no == $path_user_no ) {
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$permissions = array('read' => 'read', "write" => 'write' );
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}
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else if ( isset($path_user_no) ) {
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/**
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* We need to query the database for permissions
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*/
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$qry = new PgQuery( "SELECT get_permissions( ?, ? ) AS perm;", $session->user_no, $path_user_no);
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if ( $qry->Exec("caldav") && $permission_result = $qry->Fetch() ) {
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$permission_result = "!".$permission_result->perm; // We prepend something to ensure we get a non-zero position.
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$permissions = array();
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if ( strpos($permission_result,"R") ) $permissions['read'] = 'read';
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if ( strpos($permission_result,"W") ) $permissions['write'] = 'write';
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}
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}
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}
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header("Content-type: text/plain");
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if ( !isset($path_username) && ! $session->AllowedTo("Admin") ) {
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header('HTTP/1.0 401 Unauthorized');
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printf( "You may not request a summarised set of all calendar information." );
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dbg_error_log( "ics", "User '%s' attempted a request for %s which would be all calendar information.", $session->username, $_SERVER['PATH_INFO'] );
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}
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elseif ( isset($permissions['read']) ) {
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$results = iCalendar::iCalHeader();
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$qry = new PgQuery( "SELECT * FROM caldav_data INNER JOIN calendar_item USING(user_no, dav_name)" );
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if ( $qry->Exec("ics") && $qry->rows > 0 ) {
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while( $resource = $qry->Fetch() ) {
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$item = new iCalendar( array('icalendar' => $resource->caldav_data) );
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$results .= $item->JustThisBitPlease('VEVENT', 99999);
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$results .= $item->JustThisBitPlease('VTODO', 99999);
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$results .= $item->JustThisBitPlease('VJOURNAL', 99999);
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}
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}
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$results .= iCalendar::iCalFooter();
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print $results;
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}
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else {
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header('HTTP/1.0 401 Unauthorized');
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header("Content-type: text/plain");
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printf( "User '%s' does not have rights to that calendar information.", $session->username );
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dbg_error_log( "ics", "User '%s' does not have rights to that calendar information.", $session->username );
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exit;
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}
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?>
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