trilium/src/share/routes.ts
2024-07-18 21:28:51 +03:00

389 lines
13 KiB
TypeScript

import safeCompare = require('safe-compare');
import ejs = require('ejs');
import type { Request, Response, Router } from "express";
import shaca = require('./shaca/shaca');
import shacaLoader = require('./shaca/shaca_loader');
import shareRoot = require('./share_root');
import contentRenderer = require('./content_renderer');
import assetPath = require('../services/asset_path');
import appPath = require('../services/app_path');
import searchService = require('../services/search/services/search');
import SearchContext = require('../services/search/search_context');
import log = require('../services/log');
import SNote = require('./shaca/entities/snote');
import SBranch = require('./shaca/entities/sbranch');
import SAttachment = require('./shaca/entities/sattachment');
function getSharedSubTreeRoot(note: SNote): { note?: SNote; branch?: SBranch } {
if (note.noteId === shareRoot.SHARE_ROOT_NOTE_ID) {
// share root itself is not shared
return {};
}
// every path leads to share root, but which one to choose?
// for the sake of simplicity, URLs are not note paths
const parentBranch = note.getParentBranches()[0];
if (parentBranch.parentNoteId === shareRoot.SHARE_ROOT_NOTE_ID) {
return {
note,
branch: parentBranch
};
}
return getSharedSubTreeRoot(parentBranch.getParentNote());
}
function addNoIndexHeader(note: SNote, res: Response) {
if (note.isLabelTruthy('shareDisallowRobotIndexing')) {
res.setHeader('X-Robots-Tag', 'noindex');
}
}
function requestCredentials(res: Response) {
res.setHeader('WWW-Authenticate', 'Basic realm="User Visible Realm", charset="UTF-8"')
.sendStatus(401);
}
function checkAttachmentAccess(attachmentId: string, req: Request, res: Response) {
const attachment = shaca.getAttachment(attachmentId);
if (!attachment) {
res.status(404)
.json({ message: `Attachment '${attachmentId}' not found.` });
return false;
}
const note = checkNoteAccess(attachment.ownerId, req, res);
// truthy note means the user has access, and we can return the attachment
return note ? attachment : false;
}
function checkNoteAccess(noteId: string, req: Request, res: Response) {
const note = shaca.getNote(noteId);
if (!note) {
res.status(404)
.json({ message: `Note '${noteId}' not found.` });
return false;
}
if (noteId === '_share' && !shaca.shareIndexEnabled) {
res.status(403)
.json({ message: `Accessing share index is forbidden.` });
return false;
}
const credentials = note.getCredentials();
if (credentials.length === 0) {
return note;
}
const header = req.header("Authorization");
if (!header?.startsWith("Basic ")) {
requestCredentials(res);
return false;
}
const base64Str = header.substring("Basic ".length);
const buffer = Buffer.from(base64Str, 'base64');
const authString = buffer.toString('utf-8');
for (const credentialLabel of credentials) {
if (safeCompare(authString, credentialLabel.value)) {
return note; // success;
}
}
return false;
}
function renderImageAttachment(image: SNote, res: Response, attachmentName: string) {
let svgString = '<svg/>'
const attachment = image.getAttachmentByTitle(attachmentName);
if (!attachment) {
res.status(404).render("share/404");
return;
}
const content = attachment.getContent();
if (typeof content === "string") {
svgString = content;
} else {
// backwards compatibility, before attachments, the SVG was stored in the main note content as a separate key
const contentSvg = image.getJsonContentSafely()?.svg;
if (contentSvg) {
svgString = contentSvg;
}
}
const svg = svgString
res.set('Content-Type', "image/svg+xml");
res.set("Cache-Control", "no-cache, no-store, must-revalidate");
res.send(svg);
}
function register(router: Router) {
function renderNote(note: SNote, req: Request, res: Response) {
if (!note) {
res.status(404).render("share/404");
return;
}
if (!checkNoteAccess(note.noteId, req, res)) {
requestCredentials(res);
return;
}
addNoIndexHeader(note, res);
if (note.isLabelTruthy('shareRaw')) {
res.setHeader('Content-Type', note.mime)
.send(note.getContent());
return;
}
const { header, content, isEmpty } = contentRenderer.getContent(note);
const subRoot = getSharedSubTreeRoot(note);
const opts = { note, header, content, isEmpty, subRoot, assetPath, appPath };
let useDefaultView = true;
// Check if the user has their own template
if (note.hasRelation('shareTemplate')) {
// Get the template note and content
const templateId = note.getRelation('shareTemplate')?.value;
const templateNote = templateId && shaca.getNote(templateId);
// Make sure the note type is correct
if (templateNote && templateNote.type === 'code' && templateNote.mime === 'application/x-ejs') {
// EJS caches the result of this so we don't need to pre-cache
const includer = (path: string) => {
const childNote = templateNote.children.find(n => path === n.title);
if (!childNote) throw new Error("Unable to find child note.");
if (childNote.type !== 'code' || childNote.mime !== 'application/x-ejs') throw new Error("Incorrect child note type.");
const template = childNote.getContent();
if (typeof template !== "string") throw new Error("Invalid template content type.");
return { template };
};
// Try to render user's template, w/ fallback to default view
try {
const content = templateNote.getContent();
if (typeof content === "string") {
const ejsResult = ejs.render(content, opts, { includer });
res.send(ejsResult);
useDefaultView = false; // Rendering went okay, don't use default view
}
}
catch (e: any) {
log.error(`Rendering user provided share template (${templateId}) threw exception ${e.message} with stacktrace: ${e.stack}`);
}
}
}
if (useDefaultView) {
res.render('share/page', opts);
}
}
router.get('/share/', (req, res, next) => {
if (req.path.substr(-1) !== '/') {
res.redirect('../share/');
return;
}
shacaLoader.ensureLoad();
if (!shaca.shareRootNote) {
return res.status(404)
.json({ message: "Share root note not found" });
}
renderNote(shaca.shareRootNote, req, res);
});
router.get('/share/:shareId', (req, res, next) => {
shacaLoader.ensureLoad();
const { shareId } = req.params;
const note = shaca.aliasToNote[shareId] || shaca.notes[shareId];
renderNote(note, req, res);
});
router.get('/share/api/notes/:noteId', (req, res, next) => {
shacaLoader.ensureLoad();
let note: SNote | boolean;
if (!(note = checkNoteAccess(req.params.noteId, req, res))) {
return;
}
addNoIndexHeader(note, res);
res.json(note.getPojo());
});
router.get('/share/api/notes/:noteId/download', (req, res, next) => {
shacaLoader.ensureLoad();
let note: SNote | boolean;
if (!(note = checkNoteAccess(req.params.noteId, req, res))) {
return;
}
addNoIndexHeader(note, res);
const utils = require('../services/utils');
const filename = utils.formatDownloadTitle(note.title, note.type, note.mime);
res.setHeader('Content-Disposition', utils.getContentDisposition(filename));
res.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
res.setHeader('Content-Type', note.mime);
res.send(note.getContent());
});
// :filename is not used by trilium, but instead used for "save as" to assign a human-readable filename
router.get('/share/api/images/:noteId/:filename', (req, res, next) => {
shacaLoader.ensureLoad();
let image: SNote | boolean;
if (!(image = checkNoteAccess(req.params.noteId, req, res))) {
return;
}
if (image.type === 'image') {
// normal image
res.set('Content-Type', image.mime);
addNoIndexHeader(image, res);
res.send(image.getContent());
} else if (image.type === "canvas") {
renderImageAttachment(image, res, 'canvas-export.svg');
} else if (image.type === 'mermaid') {
renderImageAttachment(image, res, 'mermaid-export.svg');
} else {
return res.status(400)
.json({ message: "Requested note is not a shareable image" });
}
});
// :filename is not used by trilium, but instead used for "save as" to assign a human-readable filename
router.get('/share/api/attachments/:attachmentId/image/:filename', (req, res, next) => {
shacaLoader.ensureLoad();
let attachment: SAttachment | boolean;
if (!(attachment = checkAttachmentAccess(req.params.attachmentId, req, res))) {
return;
}
if (attachment.role === "image") {
res.set('Content-Type', attachment.mime);
addNoIndexHeader(attachment.note, res);
res.send(attachment.getContent());
} else {
return res.status(400)
.json({ message: "Requested attachment is not a shareable image" });
}
});
router.get('/share/api/attachments/:attachmentId/download', (req, res, next) => {
shacaLoader.ensureLoad();
let attachment: SAttachment | boolean;
if (!(attachment = checkAttachmentAccess(req.params.attachmentId, req, res))) {
return;
}
addNoIndexHeader(attachment.note, res);
const utils = require('../services/utils');
const filename = utils.formatDownloadTitle(attachment.title, null, attachment.mime);
res.setHeader('Content-Disposition', utils.getContentDisposition(filename));
res.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
res.setHeader('Content-Type', attachment.mime);
res.send(attachment.getContent());
});
// used for PDF viewing
router.get('/share/api/notes/:noteId/view', (req, res, next) => {
shacaLoader.ensureLoad();
let note: SNote | boolean;
if (!(note = checkNoteAccess(req.params.noteId, req, res))) {
return;
}
addNoIndexHeader(note, res);
res.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
res.setHeader('Content-Type', note.mime);
res.send(note.getContent());
});
// Used for searching, require noteId so we know the subTreeRoot
router.get('/share/api/notes', (req, res, next) => {
shacaLoader.ensureLoad();
const ancestorNoteId = req.query.ancestorNoteId ?? "_share";
let note;
if (typeof ancestorNoteId !== "string") {
return res.status(400).json({ message: "'ancestorNoteId' parameter is mandatory." });
}
// This will automatically return if no ancestorNoteId is provided and there is no shareIndex
if (!(note = checkNoteAccess(ancestorNoteId, req, res))) {
return;
}
const { search } = req.query;
if (typeof search !== "string" || !search?.trim()) {
return res.status(400).json({ message: "'search' parameter is mandatory." });
}
const searchContext = new SearchContext({ ancestorNoteId: ancestorNoteId });
const searchResults = searchService.findResultsWithQuery(search, searchContext);
const filteredResults = searchResults.map(sr => {
const fullNote = shaca.notes[sr.noteId];
const startIndex = sr.notePathArray.indexOf(ancestorNoteId);
const localPathArray = sr.notePathArray.slice(startIndex + 1).filter(id => shaca.notes[id]);
const pathTitle = localPathArray.map(id => shaca.notes[id].title).join(" / ");
return { id: fullNote.shareId, title: fullNote.title, score: sr.score, path: pathTitle };
});
res.json({ results: filteredResults });
});
}
export = {
register
}