/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.createResponseStatusError = createResponseStatusError;
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exports.extractFilenameFromHeader = extractFilenameFromHeader;
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exports.validateRangeRequestCapabilities = validateRangeRequestCapabilities;
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exports.validateResponseStatus = validateResponseStatus;
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var _util = require("../shared/util.js");
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var _content_disposition = require("./content_disposition.js");
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var _display_utils = require("./display_utils.js");
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function validateRangeRequestCapabilities({
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getResponseHeader,
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isHttp,
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rangeChunkSize,
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disableRange
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}) {
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const returnValues = {
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allowRangeRequests: false,
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suggestedLength: undefined
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};
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const length = parseInt(getResponseHeader("Content-Length"), 10);
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if (!Number.isInteger(length)) {
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return returnValues;
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}
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returnValues.suggestedLength = length;
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if (length <= 2 * rangeChunkSize) {
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return returnValues;
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}
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if (disableRange || !isHttp) {
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return returnValues;
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}
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if (getResponseHeader("Accept-Ranges") !== "bytes") {
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return returnValues;
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}
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const contentEncoding = getResponseHeader("Content-Encoding") || "identity";
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if (contentEncoding !== "identity") {
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return returnValues;
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}
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returnValues.allowRangeRequests = true;
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return returnValues;
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}
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function extractFilenameFromHeader(getResponseHeader) {
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const contentDisposition = getResponseHeader("Content-Disposition");
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if (contentDisposition) {
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let filename = (0, _content_disposition.getFilenameFromContentDispositionHeader)(contentDisposition);
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if (filename.includes("%")) {
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try {
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filename = decodeURIComponent(filename);
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} catch (ex) {}
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}
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if ((0, _display_utils.isPdfFile)(filename)) {
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return filename;
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}
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}
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return null;
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}
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function createResponseStatusError(status, url) {
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if (status === 404 || status === 0 && url.startsWith("file:")) {
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return new _util.MissingPDFException('Missing PDF "' + url + '".');
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}
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return new _util.UnexpectedResponseException(`Unexpected server response (${status}) while retrieving PDF "${url}".`, status);
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}
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function validateResponseStatus(status) {
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return status === 200 || status === 206;
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}
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