mirror of
https://github.com/laurent22/joplin.git
synced 2024-12-09 08:45:55 +02:00
400 lines
14 KiB
JavaScript
400 lines
14 KiB
JavaScript
const { Logger } = require('lib/logger.js');
|
|
const { shim } = require('lib/shim.js');
|
|
const parseXmlString = require('xml2js').parseString;
|
|
const JoplinError = require('lib/JoplinError');
|
|
const URL = require('url-parse');
|
|
const { rtrimSlashes, ltrimSlashes } = require('lib/path-utils.js');
|
|
const base64 = require('base-64');
|
|
|
|
// Note that the d: namespace (the DAV namespace) is specific to Nextcloud. The RFC for example uses "D:" however
|
|
// we make all the tags and attributes lowercase so we handle both the Nextcloud style and RFC. Hopefully other
|
|
// implementations use the same namespaces. If not, extra processing can be done in `nameProcessor`, for
|
|
// example to convert a custom namespace to "d:" so that it can be used by the rest of the code.
|
|
// In general, we should only deal with things in "d:", which is the standard DAV namespace.
|
|
|
|
class WebDavApi {
|
|
|
|
constructor(options) {
|
|
this.logger_ = new Logger();
|
|
this.options_ = options;
|
|
}
|
|
|
|
setLogger(l) {
|
|
this.logger_ = l;
|
|
}
|
|
|
|
logger() {
|
|
return this.logger_;
|
|
}
|
|
|
|
authToken() {
|
|
if (!this.options_.username() || !this.options_.password()) return null;
|
|
try {
|
|
// Note: Non-ASCII passwords will throw an error about Latin1 characters - https://github.com/laurent22/joplin/issues/246
|
|
// Tried various things like the below, but it didn't work on React Native:
|
|
//return base64.encode(utf8.encode(this.options_.username() + ':' + this.options_.password()));
|
|
return base64.encode(this.options_.username() + ':' + this.options_.password());
|
|
} catch (error) {
|
|
error.message = 'Cannot encode username/password: ' + error.message;
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
baseUrl() {
|
|
return rtrimSlashes(this.options_.baseUrl());
|
|
}
|
|
|
|
relativeBaseUrl() {
|
|
const url = new URL(this.baseUrl());
|
|
return url.pathname + url.query;
|
|
}
|
|
|
|
async xmlToJson(xml) {
|
|
let davNamespaces = []; // Yes, there can be more than one... xmlns:a="DAV:" xmlns:D="DAV:"
|
|
|
|
const nameProcessor = (name) => {
|
|
if (name.indexOf('xmlns:') !== 0) {
|
|
// Check if the current name is within the DAV namespace. If it is, normalise it
|
|
// by moving it to the "d:" namespace, which is what all the functions are using.
|
|
const p = name.split(':');
|
|
if (p.length == 2) {
|
|
const ns = p[0];
|
|
if (davNamespaces.indexOf(ns) >= 0) {
|
|
name = 'd:' + p[1];
|
|
}
|
|
}
|
|
}
|
|
return name.toLowerCase();
|
|
};
|
|
|
|
const attrValueProcessor = (value, name) => {
|
|
if (value.toLowerCase() === 'dav:') {
|
|
const p = name.split(':');
|
|
davNamespaces.push(p[p.length - 1]);
|
|
}
|
|
}
|
|
|
|
const options = {
|
|
tagNameProcessors: [nameProcessor],
|
|
attrNameProcessors: [nameProcessor],
|
|
attrValueProcessors: [attrValueProcessor]
|
|
}
|
|
|
|
return new Promise((resolve, reject) => {
|
|
parseXmlString(xml, options, (error, result) => {
|
|
if (error) {
|
|
resolve(null); // Error handled by caller which will display the XML text (or plain text) if null is returned from this function
|
|
return;
|
|
}
|
|
resolve(result);
|
|
});
|
|
});
|
|
}
|
|
|
|
valueFromJson(json, keys, type) {
|
|
let output = json;
|
|
|
|
for (let i = 0; i < keys.length; i++) {
|
|
const key = keys[i];
|
|
|
|
// console.info(key, typeof key, typeof output, typeof output === 'object' && (key in output), Array.isArray(output));
|
|
|
|
if (typeof key === 'number' && !Array.isArray(output)) return null;
|
|
if (typeof key === 'string' && (typeof output !== 'object' || !(key in output))) return null;
|
|
output = output[key];
|
|
}
|
|
|
|
if (type === 'string') {
|
|
// If the XML has not attribute the value is directly a string
|
|
// If the XML node has attributes, the value is under "_".
|
|
// Eg for this XML, the string will be under {"_":"Thu, 01 Feb 2018 17:24:05 GMT"}:
|
|
// <a:getlastmodified b:dt="dateTime.rfc1123">Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
|
|
// For this XML, the value will be "Thu, 01 Feb 2018 17:24:05 GMT"
|
|
// <a:getlastmodified>Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
|
|
|
|
if (typeof output === 'object' && '_' in output) output = output['_'];
|
|
if (typeof output !== 'string') return null;
|
|
return output;
|
|
}
|
|
|
|
if (type === 'object') {
|
|
if (!Array.isArray(output) && typeof output === 'object') return output;
|
|
return null;
|
|
}
|
|
|
|
if (type === 'array') {
|
|
return Array.isArray(output) ? output : null;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
stringFromJson(json, keys) {
|
|
return this.valueFromJson(json, keys, 'string');
|
|
}
|
|
|
|
objectFromJson(json, keys) {
|
|
return this.valueFromJson(json, keys, 'object');
|
|
}
|
|
|
|
arrayFromJson(json, keys) {
|
|
return this.valueFromJson(json, keys, 'array');
|
|
}
|
|
|
|
resourcePropByName(resource, outputType, propName) {
|
|
const propStats = resource['d:propstat'];
|
|
let output = null;
|
|
if (!Array.isArray(propStats)) throw new Error('Missing d:propstat property');
|
|
for (let i = 0; i < propStats.length; i++) {
|
|
const props = propStats[i]['d:prop'];
|
|
if (!Array.isArray(props) || !props.length) continue;
|
|
const prop = props[0];
|
|
if (Array.isArray(prop[propName])) {
|
|
output = prop[propName];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (outputType === 'string') {
|
|
// If the XML has not attribute the value is directly a string
|
|
// If the XML node has attributes, the value is under "_".
|
|
// Eg for this XML, the string will be under {"_":"Thu, 01 Feb 2018 17:24:05 GMT"}:
|
|
// <a:getlastmodified b:dt="dateTime.rfc1123">Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
|
|
// For this XML, the value will be "Thu, 01 Feb 2018 17:24:05 GMT"
|
|
// <a:getlastmodified>Thu, 01 Feb 2018 17:24:05 GMT</a:getlastmodified>
|
|
|
|
output = output[0];
|
|
|
|
if (typeof output === 'object' && '_' in output) output = output['_'];
|
|
if (typeof output !== 'string') return null;
|
|
return output;
|
|
}
|
|
|
|
if (outputType === 'array') {
|
|
return output;
|
|
}
|
|
|
|
throw new Error('Invalid output type: ' + outputType);
|
|
}
|
|
|
|
async execPropFind(path, depth, fields = null, options = null) {
|
|
if (fields === null) fields = ['d:getlastmodified'];
|
|
|
|
let fieldsXml = '';
|
|
for (let i = 0; i < fields.length; i++) {
|
|
fieldsXml += '<' + fields[i] + '/>';
|
|
}
|
|
|
|
// To find all available properties:
|
|
//
|
|
// const body=`<?xml version="1.0" encoding="utf-8" ?>
|
|
// <propfind xmlns="DAV:">
|
|
// <propname/>
|
|
// </propfind>`;
|
|
|
|
const body = `<?xml version="1.0" encoding="UTF-8"?>
|
|
<d:propfind xmlns:d="DAV:">
|
|
<d:prop xmlns:oc="http://owncloud.org/ns">
|
|
` + fieldsXml + `
|
|
</d:prop>
|
|
</d:propfind>`;
|
|
|
|
return this.exec('PROPFIND', path, body, { 'Depth': depth }, options);
|
|
}
|
|
|
|
requestToCurl_(url, options) {
|
|
let output = [];
|
|
output.push('curl');
|
|
output.push('-v');
|
|
if (options.method) output.push('-X ' + options.method);
|
|
if (options.headers) {
|
|
for (let n in options.headers) {
|
|
if (!options.headers.hasOwnProperty(n)) continue;
|
|
output.push('-H ' + '"' + n + ': ' + options.headers[n] + '"');
|
|
}
|
|
}
|
|
if (options.body) output.push('--data ' + "'" + options.body + "'");
|
|
output.push(url);
|
|
|
|
return output.join(' ');
|
|
}
|
|
|
|
handleNginxHack_(jsonResponse, newErrorHandler) {
|
|
// Trying to fix 404 error issue with Nginx WebDAV server.
|
|
// https://github.com/laurent22/joplin/issues/624
|
|
// https://github.com/laurent22/joplin/issues/808
|
|
// Not tested but someone confirmed it worked - https://github.com/laurent22/joplin/issues/808#issuecomment-443552858
|
|
// and fix is narrowly scoped so shouldn't affect anything outside this particular edge case.
|
|
//
|
|
// The issue is that instead of an HTTP 404 status code, Nginx returns 200 but with this response:
|
|
//
|
|
// <?xml version="1.0" encoding="utf-8" ?>
|
|
// <D:multistatus xmlns:D="DAV:">
|
|
// <D:response>
|
|
// <D:href>/notes/ecd4027a5271483984b00317433e2c66.md</D:href>
|
|
// <D:propstat>
|
|
// <D:prop/>
|
|
// <D:status>HTTP/1.1 404 Not Found</D:status>
|
|
// </D:propstat>
|
|
// </D:response>
|
|
// </D:multistatus>
|
|
//
|
|
// So we need to parse this and find that it is in fact a 404 error.
|
|
//
|
|
// HOWEVER, some implementations also return 404 for missing props, for example SeaFile:
|
|
// (indicates that the props "getlastmodified" is not present, but this call is only
|
|
// used when checking the conf, so we don't really need it)
|
|
// https://github.com/laurent22/joplin/issues/1137
|
|
//
|
|
// <?xml version='1.0' encoding='UTF-8'?>
|
|
// <ns0:multistatus xmlns:ns0="DAV:">
|
|
// <ns0:response>
|
|
// <ns0:href>/seafdav/joplin/</ns0:href>
|
|
// <ns0:propstat>
|
|
// <ns0:prop>
|
|
// <ns0:getlastmodified/>
|
|
// </ns0:prop>
|
|
// <ns0:status>HTTP/1.1 404 Not Found</ns0:status>
|
|
// </ns0:propstat>
|
|
// <ns0:propstat>
|
|
// <ns0:prop>
|
|
// <ns0:resourcetype>
|
|
// <ns0:collection/>
|
|
// </ns0:resourcetype>
|
|
// </ns0:prop>
|
|
// <ns0:status>HTTP/1.1 200 OK</ns0:status>
|
|
// </ns0:propstat>
|
|
// </ns0:response>
|
|
// </ns0:multistatus>
|
|
//
|
|
// As a simple fix for now it's enough to check if ALL the statuses are 404 - in that case
|
|
// it really means that the file doesn't exist. Otherwise we can proceed as usual.
|
|
const responseArray = this.arrayFromJson(jsonResponse, ['d:multistatus', 'd:response']);
|
|
if (responseArray && responseArray.length === 1) {
|
|
const propStats = this.arrayFromJson(jsonResponse, ['d:multistatus', 'd:response', 0, 'd:propstat']);
|
|
if (!propStats.length) return;
|
|
let count404 = 0;
|
|
for (let i = 0; i < propStats.length; i++) {
|
|
const status = this.arrayFromJson(jsonResponse, ['d:multistatus', 'd:response', 0, 'd:propstat', i, 'd:status']);
|
|
if (status && status.length && status[0].indexOf('404') >= 0) count404++;
|
|
}
|
|
|
|
if (count404 === propStats.length) throw newErrorHandler('Not found', 404);
|
|
}
|
|
}
|
|
|
|
// curl -u admin:123456 'http://nextcloud.local/remote.php/dav/files/admin/' -X PROPFIND --data '<?xml version="1.0" encoding="UTF-8"?>
|
|
// <d:propfind xmlns:d="DAV:">
|
|
// <d:prop xmlns:oc="http://owncloud.org/ns">
|
|
// <d:getlastmodified/>
|
|
// </d:prop>
|
|
// </d:propfind>'
|
|
|
|
async exec(method, path = '', body = null, headers = null, options = null) {
|
|
if (headers === null) headers = {};
|
|
if (options === null) options = {};
|
|
if (!options.responseFormat) options.responseFormat = 'json';
|
|
if (!options.target) options.target = 'string';
|
|
|
|
const authToken = this.authToken();
|
|
|
|
if (authToken) headers['Authorization'] = 'Basic ' + authToken;
|
|
|
|
// On iOS, the network lib appends a If-None-Match header to PROPFIND calls, which is kind of correct because
|
|
// the call is idempotent and thus could be cached. According to RFC-7232 though only GET and HEAD should have
|
|
// this header for caching purposes. It makes no mention of PROPFIND.
|
|
// So possibly because of this, Seafile (and maybe other WebDAV implementations) responds with a "412 Precondition Failed"
|
|
// error when this header is present for PROPFIND call on existing resources. This is also kind of correct because there is a resource
|
|
// with this eTag and since this is neither a GET nor HEAD call, it is supposed to respond with 412 if the resource is present.
|
|
// The "solution", an ugly one, is to send a purposely invalid string as eTag, which will bypass the If-None-Match check - Seafile
|
|
// finds out that no resource has this ID and simply sends the requested data.
|
|
// Also add a random value to make sure the eTag is unique for each call.
|
|
if (['GET', 'HEAD'].indexOf(method) < 0) headers['If-None-Match'] = 'JoplinIgnore-' + Math.floor(Math.random() * 100000);
|
|
|
|
const fetchOptions = {};
|
|
fetchOptions.headers = headers;
|
|
fetchOptions.method = method;
|
|
if (options.path) fetchOptions.path = options.path;
|
|
if (body) fetchOptions.body = body;
|
|
|
|
const url = this.baseUrl() + '/' + path;
|
|
|
|
let response = null;
|
|
|
|
// console.info('WebDAV Call', method + ' ' + url, headers, options);
|
|
// console.info(this.requestToCurl_(url, fetchOptions));
|
|
|
|
if (options.source == 'file' && (method == 'POST' || method == 'PUT')) {
|
|
if (fetchOptions.path) {
|
|
const fileStat = await shim.fsDriver().stat(fetchOptions.path);
|
|
if (fileStat) fetchOptions.headers['Content-Length'] = fileStat.size + '';
|
|
}
|
|
response = await shim.uploadBlob(url, fetchOptions);
|
|
} else if (options.target == 'string') {
|
|
if (typeof body === 'string') fetchOptions.headers['Content-Length'] = shim.stringByteLength(body) + '';
|
|
response = await shim.fetch(url, fetchOptions);
|
|
} else { // file
|
|
response = await shim.fetchBlob(url, fetchOptions);
|
|
}
|
|
|
|
const responseText = await response.text();
|
|
|
|
// console.info('WebDAV Response', responseText);
|
|
|
|
// Creates an error object with as much data as possible as it will appear in the log, which will make debugging easier
|
|
const newError = (message, code = 0) => {
|
|
// Gives a shorter response for error messages. Useful for cases where a full HTML page is accidentally loaded instead of
|
|
// JSON. That way the error message will still show there's a problem but without filling up the log or screen.
|
|
const shortResponseText = (responseText + '').substr(0, 1024);
|
|
return new JoplinError(method + ' ' + path + ': ' + message + ' (' + code + '): ' + shortResponseText, code);
|
|
}
|
|
|
|
let responseJson_ = null;
|
|
const loadResponseJson = async () => {
|
|
if (!responseText) return null;
|
|
if (responseJson_) return responseJson_;
|
|
responseJson_ = await this.xmlToJson(responseText);
|
|
if (!responseJson_) throw newError('Cannot parse XML response', response.status);
|
|
return responseJson_;
|
|
}
|
|
|
|
if (!response.ok) {
|
|
// When using fetchBlob we only get a string (not xml or json) back
|
|
if (options.target === 'file') throw newError('fetchBlob error', response.status);
|
|
|
|
let json = null;
|
|
try {
|
|
json = await loadResponseJson();
|
|
} catch (error) {
|
|
// Just send back the plain text in newErro()
|
|
}
|
|
|
|
if (json && json['d:error']) {
|
|
const code = json['d:error']['s:exception'] ? json['d:error']['s:exception'].join(' ') : response.status;
|
|
const message = json['d:error']['s:message'] ? json['d:error']['s:message'].join("\n") : 'Unknown error 1';
|
|
throw newError(message + ' (Exception ' + code + ')', response.status);
|
|
}
|
|
|
|
throw newError('Unknown error 2', response.status);
|
|
}
|
|
|
|
if (options.responseFormat === 'text') return responseText;
|
|
|
|
// The following methods may have a response depending on the server but it's not
|
|
// standard (some return a plain string, other XML, etc.) and we don't check the
|
|
// response anyway since we rely on the HTTP status code so return null.
|
|
if (['MKCOL', 'DELETE', 'PUT', 'MOVE'].indexOf(method) >= 0) return null;
|
|
|
|
const output = await loadResponseJson();
|
|
this.handleNginxHack_(output, newError);
|
|
|
|
// Check that we didn't get for example an HTML page (as an error) instead of the JSON response
|
|
// null responses are possible, for example for DELETE calls
|
|
if (output !== null && typeof output === 'object' && !('d:multistatus' in output)) throw newError('Not a valid WebDAV response');
|
|
|
|
return output;
|
|
}
|
|
|
|
}
|
|
|
|
module.exports = WebDavApi; |