mirror of
https://gitlab.com/davical-project/davical.git
synced 2026-05-19 01:34:26 +00:00
60 lines
2.5 KiB
PHP
60 lines
2.5 KiB
PHP
<?php
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dbg_error_log("delete", "DELETE method handler");
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/**
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* etag_none_match, if set, is telling us only to DELETE if it fails to match. Likewise etag_if_match
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* is telling us only to DELETE if it successfully matches the ETag. Se Evolution's Bugzilla for the
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* truth about Evolution's broken handling of this: http://bugzilla.gnome.org/show_bug.cgi?id=349573
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*/
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if ( !isset($etag_if_match) && isset($etag_none_match) && preg_match('#Evolution/([0-9.]+)#', $_SERVER['HTTP_USER_AGENT'], $matches ) ) {
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if ( doubleval($matches[1]) <= 1.8 ) {
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$etag_if_match = $etag_none_match;
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unset($etag_none_match);
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}
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}
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if ( !isset($permissions['write']) ) {
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header("HTTP/1.1 403 Forbidden");
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header("Content-type: text/plain");
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if ( isset($etag_none_match) && $etag_none_match == $delete_row->dav_etag ) {
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echo "Permission denied";
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}
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exit(0);
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}
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/**
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* Wr read the resource first, so we can check if it matches (or does not match)
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*/
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$qry = new PgQuery( "SELECT * FROM caldav_data WHERE user_no = ? AND dav_name = ?;", (isset($path_user_no)?$path_user_no:$session->user_no), $request_path );
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if ( $qry->Exec("DELETE") && $qry->rows == 1 ) {
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$delete_row = $qry->Fetch();
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if ( (isset($etag_none_match) && $etag_none_match == $delete_row->dav_etag) || (isset($etag_if_match) && $etag_if_match != $delete_row->dav_etag) ) {
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header("HTTP/1.1 412 Precondition Failed");
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header("Content-type: text/plain");
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if ( isset($etag_none_match) && $etag_none_match == $delete_row->dav_etag ) {
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echo "Resource matches 'If-None-Match' header - not deleted\n";
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}
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if ( isset($etag_if_match) && $etag_if_match != $delete_row->dav_etag ) {
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echo "Resource does not match 'If-Match' header - not deleted\n";
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}
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exit(0);
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}
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$qry = new PgQuery( "DELETE FROM caldav_data WHERE user_no = ? AND dav_name = ? $only_this_etag;", $session->user_no, $request_path );
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if ( $qry->Exec("DELETE") ) {
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header("HTTP/1.1 200 Deleted", true, 200);
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header("Content-length: 0");
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dbg_error_log( "DELETE", "DELETE: User: %d, ETag: %s, Path: %s", $session->user_no, $etag_none_match, $request_path);
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}
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else {
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header("HTTP/1.1 500 Infernal Server Error");
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dbg_error_log( "DELETE", "DELETE failed: User: %d, ETag: %s, Path: %s, SQL: %s", $session->user_no, $etag_none_match, $request_path, $qry->querystring);
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}
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}
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else {
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header("HTTP/1.1 404 Not Found");
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dbg_error_log( "DELETE", "DELETE row not found: User: %d, ETag: %s, Path: %s", $qry->rows, $session->user_no, $etag_none_match, $request_path);
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}
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?>
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