Initial release v1.0.0 — Nextcloud Collabora Node-RED sidecar

lib/webdav.js

@@ -0,0 +1,155 @@
+'use strict';
+
+const { requestBuffer } = require('./http-client');
+const { normalizeNcPath, filenameFromPath } = require('./utils');
+
+function authHeader(config) {
+    const token = Buffer.from(`${config.username}:${config.password}`).toString('base64');
+    return `Basic ${token}`;
+}
+
+function webDavBase(config) {
+    const base = config.nextcloudUrl.replace(/\/$/, '');
+    return `${base}/remote.php/dav/files/${encodeURIComponent(config.username)}`;
+}
+
+function encodePathSegments(ncPath) {
+    const normalized = normalizeNcPath(ncPath);
+    return normalized
+        .split('/')
+        .filter(Boolean)
+        .map((segment) => encodeURIComponent(segment))
+        .join('/');
+}
+
+function webDavUrl(config, ncPath) {
+    const rel = encodePathSegments(ncPath);
+    return rel ? `${webDavBase(config)}/${rel}` : webDavBase(config);
+}
+
+function tlsOptions(config) {
+    return { rejectUnauthorized: config.verifyTls !== false && config.verifyTls !== 'false' };
+}
+
+async function webdavGet(config, ncPath) {
+    const url = webDavUrl(config, ncPath);
+    const res = await requestBuffer({
+        url,
+        method: 'GET',
+        headers: { Authorization: authHeader(config) },
+        rejectUnauthorized: tlsOptions(config).rejectUnauthorized
+    });
+
+    if (res.statusCode === 404) {
+        throw new Error(`WebDAV 404: filen finns inte: ${normalizeNcPath(ncPath)}`);
+    }
+    if (res.statusCode === 401 || res.statusCode === 403) {
+        throw new Error(`WebDAV ${res.statusCode}: kontrollera app-lösenord och användare`);
+    }
+    if (res.statusCode < 200 || res.statusCode >= 300) {
+        throw new Error(`WebDAV GET misslyckades (${res.statusCode}) för ${normalizeNcPath(ncPath)}`);
+    }
+
+    return {
+        buffer: res.body,
+        filename: filenameFromPath(ncPath),
+        ncPath: normalizeNcPath(ncPath),
+        contentType: res.headers['content-type']
+    };
+}
+
+async function ensureFolder(config, folderPath) {
+    const normalized = normalizeNcPath(folderPath);
+    if (!normalized || normalized === '/') {
+        return;
+    }
+
+    const parts = normalized.split('/').filter(Boolean);
+    let current = '';
+    for (const part of parts) {
+        current += '/' + part;
+        const url = webDavUrl(config, current);
+        const res = await requestBuffer({
+            url,
+            method: 'MKCOL',
+            headers: { Authorization: authHeader(config) },
+            rejectUnauthorized: tlsOptions(config).rejectUnauthorized
+        });
+        if (res.statusCode !== 201 && res.statusCode !== 405 && res.statusCode !== 301) {
+            if (res.statusCode >= 400) {
+                throw new Error(`WebDAV MKCOL misslyckades (${res.statusCode}) för ${current}`);
+            }
+        }
+    }
+}
+
+async function webdavPut(config, ncPath, buffer, contentType) {
+    const dest = normalizeNcPath(ncPath);
+    const folder = dest.substring(0, dest.lastIndexOf('/')) || '/';
+    await ensureFolder(config, folder);
+
+    const url = webDavUrl(config, dest);
+    const res = await requestBuffer({
+        url,
+        method: 'PUT',
+        headers: {
+            Authorization: authHeader(config),
+            'Content-Type': contentType || 'application/octet-stream',
+            'Content-Length': buffer.length
+        },
+        body: buffer,
+        rejectUnauthorized: tlsOptions(config).rejectUnauthorized
+    });
+
+    if (res.statusCode === 401 || res.statusCode === 403) {
+        throw new Error(`WebDAV ${res.statusCode}: kontrollera app-lösenord`);
+    }
+    if (res.statusCode < 200 || res.statusCode >= 300) {
+        throw new Error(`WebDAV PUT misslyckades (${res.statusCode}) för ${dest}`);
+    }
+
+    return {
+        statusCode: res.statusCode,
+        destNcPath: dest,
+        filename: filenameFromPath(dest)
+    };
+}
+
+async function webdavPropfindFileId(config, ncPath) {
+    const url = webDavUrl(config, ncPath);
+    const body = `<?xml version="1.0" encoding="UTF-8"?>
+<d:propfind xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
+  <d:prop><oc:fileid/></d:prop>
+</d:propfind>`;
+
+    const res = await requestBuffer({
+        url,
+        method: 'PROPFIND',
+        headers: {
+            Authorization: authHeader(config),
+            Depth: '0',
+            'Content-Type': 'application/xml; charset=utf-8'
+        },
+        body,
+        rejectUnauthorized: tlsOptions(config).rejectUnauthorized
+    });
+
+    if (res.statusCode < 200 || res.statusCode >= 300) {
+        throw new Error(`PROPFIND misslyckades (${res.statusCode}) för ${normalizeNcPath(ncPath)}`);
+    }
+
+    const text = res.body.toString('utf8');
+    const match = text.match(/<oc:fileid>(\d+)<\/oc:fileid>/i) || text.match(/<nc:fileid>(\d+)<\/nc:fileid>/i);
+    if (!match) {
+        throw new Error(`Kunde inte hitta fileId för ${normalizeNcPath(ncPath)}`);
+    }
+    return parseInt(match[1], 10);
+}
+
+module.exports = {
+    webDavUrl,
+    webdavGet,
+    webdavPut,
+    webdavPropfindFileId,
+    ensureFolder
+};