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import { Request, Response, Router } from "express"
import * as express from "express"
import rateLimit from "express-rate-limit"
import filenamify from "filenamify"
import * as React from "react"
import { getConnection } from "typeorm"
import { expectInt, tryInt, renderToHtmlPage } from "../serverUtils/serverUtil"
import { logInWithCredentials, logOut } from "./authentication"
import { LoginPage } from "./LoginPage"
import { RegisterPage } from "./RegisterPage"
import * as db from "../db/db"
import { Dataset } from "../db/model/Dataset"
import { User } from "../db/model/User"
import { UserInvitation } from "../db/model/UserInvitation"
import { BAKED_BASE_URL, ENV } from "../settings/serverSettings"
import { ExplorerAdminServer } from "../explorerAdminServer/ExplorerAdminServer"
import { renderExplorerPage, renderPreview } from "../baker/siteRenderers"
import { JsonError } from "../clientUtils/owidTypes"
import { GitCmsServer } from "../gitCms/GitCmsServer"
import { GIT_CMS_DIR } from "../gitCms/GitCmsConstants"
import { slugify, stringifyUnkownError } from "../clientUtils/Util"
import {
DefaultNewExplorerSlug,
EXPLORERS_PREVIEW_ROUTE,
GetAllExplorersRoute,
} from "../explorer/ExplorerConstants"
import {
ExplorerProgram,
EXPLORER_FILE_SUFFIX,
} from "../explorer/ExplorerProgram"
import { existsSync } from "fs-extra"
// Used for rate-limiting important endpoints (login, register) to prevent brute force attacks
const limiterMiddleware = (
onFailRender: (req: Request, res: Response) => React.ReactElement
) =>
rateLimit({
windowMs: 60_000, // 1 minute
max: 10, // max. 10 requests per minute
handler: (req, res) =>
res.status(429).send(renderToHtmlPage(onFailRender(req, res))),
})
const adminRouter = Router()
// Parse incoming requests with JSON payloads http://expressjs.com/en/api.html
adminRouter.use(express.json({ limit: "50mb" }))
// None of these should be google indexed
adminRouter.use(async (req, res, next) => {
res.set("X-Robots-Tag", "noindex")
return next()
})
adminRouter.get("/", async (req, res) => {
// Preview URLs generated by WP depend on the status of the post:
// * PUBLISHED: owid.cloud/SLUG?preview=true --> run through WP singular.php
// and directly redirected to /admin/posts/preview/POST_ID
// * DRAFT:
// - post: owid.cloud/?p=POST_ID&preview=true
// - page: owid.cloud/?page_id=PAGE_ID&preview=true
// --> "/" captured by NGINX and redirected here (/admin/)
//
// Ideally, the preview URL in WP would be pointing directly to
// /admin/posts/preview/POST_ID (bypassing WP altogether, for published and
// draft posts) but this is only partially possible for now, as the preview
// URL of draft posts does not get rewritten by the preview_post_link filter
// within Gutenberg.
//
// See:
// * https://github.com/WordPress/gutenberg/issues/13998
// * https://developer.wordpress.org/reference/hooks/preview_post_link/
if (req.query.preview === "true" && (req.query.p || req.query.page_id)) {
// HACK
res.redirect(`/admin/posts/preview/${req.query.p || req.query.page_id}`)
} else {
res.redirect(`/admin/charts`)
}
})
adminRouter.get("/login", async (req, res) => {
res.send(renderToHtmlPage(<LoginPage next={req.query.next} />))
})
adminRouter.post(
"/login",
limiterMiddleware((req) => (
<LoginPage
errorMessage="Too many attempts, please try again in a minute."
next={req.query.next}
/>
)),
async (req, res) => {
try {
const session = await logInWithCredentials(
req.body.username,
req.body.password
)
res.cookie("sessionid", session.id, {
httpOnly: true,
sameSite: "lax",
secure: ENV === "production",
})
res.redirect(req.query.next || "/admin")
} catch (err) {
res.status(400).send(
renderToHtmlPage(
<LoginPage
next={req.query.next}
errorMessage={stringifyUnkownError(err)}
/>
)
)
}
}
)
adminRouter.get("/logout", logOut)
adminRouter.get(
"/register",
limiterMiddleware((req) => (
<RegisterPage
errorMessage="Too many attempts, please try again in a minute."
body={req.query}
/>
)),
async (req, res) => {
if (res.locals.user) {
res.redirect("/admin")
return
}
let errorMessage: string | undefined
let invite: UserInvitation | undefined
try {
// Delete all expired invites before continuing
await UserInvitation.createQueryBuilder()
.where("validTill < NOW()")
.delete()
.execute()
invite = await UserInvitation.findOne({ code: req.query.code })
if (!invite) throw new JsonError("Invite code invalid or expired")
} catch (err) {
errorMessage = stringifyUnkownError(err)
res.status(tryInt((err as any).code, 500))
} finally {
res.send(
renderToHtmlPage(
<RegisterPage
inviteEmail={invite && invite.email}
errorMessage={errorMessage}
body={req.query}
/>
)
)
}
}
)
adminRouter.post(
"/register",
limiterMiddleware((req) => (
<RegisterPage
errorMessage="Too many attempts, please try again in a minute."
body={req.query}
/>
)),
async (req, res) => {
try {
// Delete all expired invites before continuing
await UserInvitation.createQueryBuilder()
.where("validTill < NOW()")
.delete()
.execute()
const invite = await UserInvitation.findOne({ code: req.body.code })
if (!invite) {
throw new JsonError("Invite code invalid or expired", 403)
}
if (req.body.password !== req.body.confirmPassword) {
throw new JsonError("Passwords don't match!", 400)
}
await getConnection().transaction(async (manager) => {
const user = new User()
user.email = req.body.email
user.fullName = req.body.fullName
user.createdAt = new Date()
user.updatedAt = new Date()
user.lastLogin = new Date()
await user.setPassword(req.body.password)
await manager.getRepository(User).save(user)
// Remove the invite now that it has been used successfully
await manager.remove(invite)
})
await logInWithCredentials(req.body.email, req.body.password)
res.redirect("/admin")
} catch (err) {
res.status(tryInt((err as any).code, 500))
res.send(
renderToHtmlPage(
<RegisterPage
errorMessage={stringifyUnkownError(err)}
body={req.body}
/>
)
)
}
}
)
adminRouter.get("/datasets/:datasetId.csv", async (req, res) => {
const datasetId = expectInt(req.params.datasetId)
const datasetName = (
await db.mysqlFirst(`SELECT name FROM datasets WHERE id=?`, [datasetId])
).name
res.attachment(filenamify(datasetName) + ".csv")
return Dataset.writeCSV(datasetId, res)
})
adminRouter.get("/datasets/:datasetId/downloadZip", async (req, res) => {
const datasetId = expectInt(req.params.datasetId)
res.attachment("additional-material.zip")
const file = await db.mysqlFirst(
`SELECT filename, file FROM dataset_files WHERE datasetId=?`,
[datasetId]
)
res.send(file.file)
})
adminRouter.get("/posts/preview/:postId", async (req, res) => {
const postId = expectInt(req.params.postId)
res.send(await renderPreview(postId))
})
adminRouter.get("/errorTest.csv", async (req, res) => {
// Add `table /admin/errorTest.csv?code=404` to test fetch download failures
const code =
req.query.code && !isNaN(parseInt(req.query.code))
? req.query.code
: 400
res.status(code)
return `Simulating code ${code}`
})
const explorerAdminServer = new ExplorerAdminServer(GIT_CMS_DIR)
adminRouter.get(`/${GetAllExplorersRoute}`, async (req, res) => {
res.send(await explorerAdminServer.getAllExplorersCommand())
})
adminRouter.get(`/${EXPLORERS_PREVIEW_ROUTE}/:slug`, async (req, res) => {
const slug = slugify(req.params.slug)
const filename = slug + EXPLORER_FILE_SUFFIX
if (slug === DefaultNewExplorerSlug)
return res.send(
await renderExplorerPage(
new ExplorerProgram(DefaultNewExplorerSlug, "")
)
)
if (!slug || !existsSync(explorerAdminServer.absoluteFolderPath + filename))
return res.send(`File not found`)
const explorer = await explorerAdminServer.getExplorerFromFile(filename)
return res.send(await renderExplorerPage(explorer))
})
const gitCmsServer = new GitCmsServer({
baseDir: GIT_CMS_DIR,
shouldAutoPush: true,
})
gitCmsServer.createDirAndInitIfNeeded()
gitCmsServer.addToRouter(adminRouter)
export { adminRouter }
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