mirror of
https://github.com/laurent22/joplin.git
synced 2024-12-03 08:35:29 +02:00
303 lines
9.8 KiB
JavaScript
303 lines
9.8 KiB
JavaScript
const { Logger } = require('lib/logger.js');
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const { shim } = require('lib/shim.js');
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const parseXmlString = require('xml2js').parseString;
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const JoplinError = require('lib/JoplinError');
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const URL = require('url-parse');
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const { rtrimSlashes, ltrimSlashes } = require('lib/path-utils.js');
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const base64 = require('base-64');
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// Note that the d: namespace (the DAV namespace) is specific to Nextcloud. The RFC for example uses "D:" however
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// we make all the tags and attributes lowercase so we handle both the Nextcloud style and RFC. Hopefully other
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// implementations use the same namespaces. If not, extra processing can be done in `nameProcessor`, for
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// example to convert a custom namespace to "d:" so that it can be used by the rest of the code.
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// In general, we should only deal with things in "d:", which is the standard DAV namespace.
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class WebDavApi {
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constructor(options) {
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this.logger_ = new Logger();
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this.options_ = options;
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}
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setLogger(l) {
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this.logger_ = l;
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}
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logger() {
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return this.logger_;
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}
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authToken() {
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if (!this.options_.username() || !this.options_.password()) return null;
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return base64.encode(this.options_.username() + ':' + this.options_.password());
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}
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baseUrl() {
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return this.options_.baseUrl();
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}
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relativeBaseUrl() {
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const url = new URL(this.baseUrl());
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return url.pathname + url.query;
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}
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async xmlToJson(xml) {
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let davNamespaces = []; // Yes, there can be more than one... xmlns:a="DAV:" xmlns:D="DAV:"
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const nameProcessor = (name) => {
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if (name.indexOf('xmlns:') !== 0) {
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// Check if the current name is within the DAV namespace. If it is, normalise it
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// by moving it to the "d:" namespace, which is what all the functions are using.
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const p = name.split(':');
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if (p.length == 2) {
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const ns = p[0];
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if (davNamespaces.indexOf(ns) >= 0) {
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name = 'd:' + p[1];
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}
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}
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}
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return name.toLowerCase();
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};
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const attrValueProcessor = (value, name) => {
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if (value.toLowerCase() === 'dav:') {
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const p = name.split(':');
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davNamespaces.push(p[p.length - 1]);
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}
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}
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const options = {
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tagNameProcessors: [nameProcessor],
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attrNameProcessors: [nameProcessor],
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attrValueProcessors: [attrValueProcessor]
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}
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return new Promise((resolve, reject) => {
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parseXmlString(xml, options, (error, result) => {
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if (error) {
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resolve(null); // Error handled by caller which will display the XML text (or plain text) if null is returned from this function
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return;
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}
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resolve(result);
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});
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});
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}
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valueFromJson(json, keys, type) {
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let output = json;
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for (let i = 0; i < keys.length; i++) {
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const key = keys[i];
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// console.info(key, typeof key, typeof output, typeof output === 'object' && (key in output), Array.isArray(output));
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if (typeof key === 'number' && !Array.isArray(output)) return null;
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if (typeof key === 'string' && (typeof output !== 'object' || !(key in output))) return null;
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output = output[key];
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}
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if (type === 'string') {
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// If the XML has not attribute the value is directly a string
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// If the XML node has attributes, the value is under "_".
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// Eg for this XML, the string will be under {"_":"Thu, 01 Feb 2018 17:24:05 GMT"}:
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// <a:getlastmodified b:dt="dateTime.rfc1123">Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
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// For this XML, the value will be "Thu, 01 Feb 2018 17:24:05 GMT"
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// <a:getlastmodified>Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
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if (typeof output === 'object' && '_' in output) output = output['_'];
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if (typeof output !== 'string') return null;
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return output;
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}
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if (type === 'object') {
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if (!Array.isArray(output) && typeof output === 'object') return output;
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return null;
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}
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if (type === 'array') {
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return Array.isArray(output) ? output : null;
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}
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return null;
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}
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stringFromJson(json, keys) {
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return this.valueFromJson(json, keys, 'string');
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}
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objectFromJson(json, keys) {
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return this.valueFromJson(json, keys, 'object');
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}
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arrayFromJson(json, keys) {
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return this.valueFromJson(json, keys, 'array');
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}
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resourcePropByName(resource, outputType, propName) {
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const propStats = resource['d:propstat'];
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let output = null;
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if (!Array.isArray(propStats)) throw new Error('Missing d:propstat property');
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for (let i = 0; i < propStats.length; i++) {
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const props = propStats[i]['d:prop'];
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if (!Array.isArray(props) || !props.length) continue;
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const prop = props[0];
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if (Array.isArray(prop[propName])) {
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output = prop[propName];
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break;
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}
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}
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if (outputType === 'string') {
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// If the XML has not attribute the value is directly a string
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// If the XML node has attributes, the value is under "_".
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// Eg for this XML, the string will be under {"_":"Thu, 01 Feb 2018 17:24:05 GMT"}:
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// <a:getlastmodified b:dt="dateTime.rfc1123">Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
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// For this XML, the value will be "Thu, 01 Feb 2018 17:24:05 GMT"
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// <a:getlastmodified>Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
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output = output[0];
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if (typeof output === 'object' && '_' in output) output = output['_'];
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if (typeof output !== 'string') return null;
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return output;
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}
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if (outputType === 'array') {
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return output;
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}
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throw new Error('Invalid output type: ' + outputType);
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}
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async execPropFind(path, depth, fields = null, options = null) {
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if (fields === null) fields = ['d:getlastmodified'];
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let fieldsXml = '';
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for (let i = 0; i < fields.length; i++) {
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fieldsXml += '<' + fields[i] + '/>';
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}
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// To find all available properties:
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//
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// const body=`<?xml version="1.0" encoding="utf-8" ?>
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// <propfind xmlns="DAV:">
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// <propname/>
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// </propfind>`;
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const body = `<?xml version="1.0" encoding="UTF-8"?>
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<d:propfind xmlns:d="DAV:">
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<d:prop xmlns:oc="http://owncloud.org/ns">
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` + fieldsXml + `
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</d:prop>
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</d:propfind>`;
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return this.exec('PROPFIND', path, body, { 'Depth': depth }, options);
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}
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requestToCurl_(url, options) {
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let output = [];
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output.push('curl');
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if (options.method) output.push('-X ' + options.method);
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if (options.headers) {
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for (let n in options.headers) {
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if (!options.headers.hasOwnProperty(n)) continue;
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output.push('-H ' + '"' + n + ': ' + options.headers[n] + '"');
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}
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}
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if (options.body) output.push('--data ' + "'" + options.body + "'");
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output.push(url);
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return output.join(' ');
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}
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// curl -u admin:123456 'http://nextcloud.local/remote.php/dav/files/admin/' -X PROPFIND --data '<?xml version="1.0" encoding="UTF-8"?>
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// <d:propfind xmlns:d="DAV:">
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// <d:prop xmlns:oc="http://owncloud.org/ns">
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// <d:getlastmodified/>
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// </d:prop>
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// </d:propfind>'
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async exec(method, path = '', body = null, headers = null, options = null) {
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if (headers === null) headers = {};
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if (options === null) options = {};
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if (!options.responseFormat) options.responseFormat = 'json';
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if (!options.target) options.target = 'string';
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const authToken = this.authToken();
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if (authToken) headers['Authorization'] = 'Basic ' + authToken;
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const fetchOptions = {};
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fetchOptions.headers = headers;
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fetchOptions.method = method;
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if (options.path) fetchOptions.path = options.path;
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if (body) fetchOptions.body = body;
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const url = this.baseUrl() + '/' + path;
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let response = null;
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// console.info('WebDAV Call', method + ' ' + url, headers, options);
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// console.info(this.requestToCurl_(url, fetchOptions));
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if (options.source == 'file' && (method == 'POST' || method == 'PUT')) {
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if (fetchOptions.path) {
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const fileStat = await shim.fsDriver().stat(fetchOptions.path);
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if (fileStat) fetchOptions.headers['Content-Length'] = fileStat.size + '';
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}
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response = await shim.uploadBlob(url, fetchOptions);
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} else if (options.target == 'string') {
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if (typeof body === 'string') fetchOptions.headers['Content-Length'] = shim.stringByteLength(body) + '';
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response = await shim.fetch(url, fetchOptions);
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} else { // file
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response = await shim.fetchBlob(url, fetchOptions);
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}
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const responseText = await response.text();
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// console.info('WebDAV Response', responseText);
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// Gives a shorter response for error messages. Useful for cases where a full HTML page is accidentally loaded instead of
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// JSON. That way the error message will still show there's a problem but without filling up the log or screen.
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const shortResponseText = () => {
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return (responseText + '').substr(0, 1024);
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}
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let responseJson_ = null;
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const loadResponseJson = async () => {
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if (!responseText) return null;
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if (responseJson_) return responseJson_;
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responseJson_ = await this.xmlToJson(responseText);
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if (!responseJson_) throw new JoplinError('Cannot parse JSON response: ' + shortResponseText(), response.status);
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return responseJson_;
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}
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if (!response.ok) {
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// When using fetchBlob we only get a string (not xml or json) back
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if (options.target === 'file') throw new JoplinError(shortResponseText(), response.status);
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const json = await loadResponseJson();
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if (json && json['d:error']) {
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const code = json['d:error']['s:exception'] ? json['d:error']['s:exception'].join(' ') : response.status;
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const message = json['d:error']['s:message'] ? json['d:error']['s:message'].join("\n") : shortResponseText();
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throw new JoplinError(method + ' ' + path + ': ' + message + ' (' + code + ')', response.status);
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}
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throw new JoplinError(method + ' ' + path + ': ' + shortResponseText(), response.status);
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}
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if (options.responseFormat === 'text') return responseText;
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const output = await loadResponseJson();
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// Check that we didn't get for example an HTML page (as an error) instead of the JSON response
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// null responses are possible, for example for DELETE calls
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if (output !== null && typeof output === 'object' && !('d:multistatus' in output)) throw new Error('Not a valid JSON response: ' + shortResponseText());
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return output;
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}
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}
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module.exports = WebDavApi; |