Function validateRequest

samples/Node.js/flow-node.js:27–61

(chunkNumber, chunkSize, totalSize, identifier, filename, fileSize)

    }

    function validateRequest(chunkNumber, chunkSize, totalSize, identifier, filename, fileSize) {
        // Clean up the identifier
        identifier = cleanIdentifier(identifier);

        // Check if the request is sane
        if (chunkNumber == 0 || chunkSize == 0 || totalSize == 0 || identifier.length == 0 || filename.length == 0) {
            return 'non_flow_request';
        }
        var numberOfChunks = Math.max(Math.floor(totalSize / (chunkSize * 1.0)), 1);
        if (chunkNumber > numberOfChunks) {
            return 'invalid_flow_request1';
        }

        // Is the file too big?
        if ($.maxFileSize && totalSize > $.maxFileSize) {
            return 'invalid_flow_request2';
        }

        if (typeof(fileSize) != 'undefined') {
            if (chunkNumber < numberOfChunks && fileSize != chunkSize) {
                // The chunk in the POST request isn't the correct size
                return 'invalid_flow_request3';
            }
            if (numberOfChunks > 1 && chunkNumber == numberOfChunks && fileSize != ((totalSize % chunkSize) + parseInt(chunkSize))) {
                // The chunks in the POST is the last one, and the fil is not the correct size
                return 'invalid_flow_request4';
            }
            if (numberOfChunks == 1 && fileSize != totalSize) {
                // The file is only a single chunk, and the data size does not fit
                return 'invalid_flow_request5';
            }
        }

        return 'valid';
    }

    //'found', filename, original_filename, identifier
    //'not_found', null, null, null