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webserver.js
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webserver.js
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const compact = require('lodash.compact')
const express = require('express')
const accepts = require('accepts')
const Links = require('./links')
const Domain = require('./domain')
const geojson = require('./geojson')
const Collection = require('./collection')
const Mustache = require('mustache')
module.exports = (config, archiveManager) => {
const app = express()
app.get('/', (req, resp) => {
let headers = req.headers
let domain = req.headers.host
archiveManager.findArchive(domain, (archiveError, archive) => {
let accept = accepts(req)
switch (accept.type(['json', 'html'])) {
case 'json': handleJsonRoot(config, archiveError, domain, archive, req, resp); break;
case 'html': handleHtmlRoot(config, archiveError, domain, archive, req, resp); break;
default: handleDefaultRoot(config, archiveError, domain, archive, req, resp); break;
}
})
})
app.get('/collection', (req, resp) => {
let domain = req.headers.host
archiveManager.findArchive(domain, (archiveError, archive) => {
let accept = accepts(req)
switch (accept.type(['json', 'html'])) {
case 'json': handleJsonCollectionListing(config, archiveError, domain, archive, req, resp); break;
case 'html': handleHtmlCollectionListing(config, archiveError, domain, archive, req, resp); break;
default: handleDefaultCollectionListing(config, archiveError, domain, archive, req, resp); break;
}
})
})
app.post('/dat/:dat', (req, resp) => {
let headers = req.headers
let domain = req.headers.host // much insecure, easy forge
let dat = req.params.dat
archiveManager.findArchive(domain, (err, archive) => {
if (archive) return resp.send('{"ok": false, "reason": "already registered"}')
archiveManager.set(domain, dat)
resp.send('{"ok": true}')
})
})
// app.delete('/dat', (req, resp) => {
// let headers = req.headers
// let domain = req.headers.host // much insecure, easy forge
// archiveManager.remove(domain)
// resp.send('{"ok": true}')
// })
app.listen(config.httpPort)
console.log(`WEB server started on port ${config.httpPort}`)
return app
}
const onErrorJson = (error, resp) => resp.status(500).send({error})
const sendDirListingJson = (config, archive, dirPath, domain, resp) => {
if (config.disableCollectionListing) return resp.status(403).send({ok: false, reason: 'collectionListings is disabled'})
Collection.asDomainList(config, archive, dirPath, domain, (error, collection) => {
if (error) return resp.status(404).send({error})
resp.send({ok: true, collection})
})
}
function handleJsonRoot (config, archiveError, domain, archive, req, resp) {
resp.type('application/json')
if (archiveError) return resp.status(404).send({error: archiveError})
Domain.mode(archive, domain, (error, info) => {
if (error) onErrorJson(error, resp)
resp.set('datKey', archive.key.toString('hex'))
resp.set('datVersion', archive.version)
if (info.isCollectionWithIndex) {
resp.set('datFile', info.isCollectionWithIndex)
resp.set('collection', 'true')
return archive.createReadStream(info.isCollectionWithIndex).on('error', err => onErrorJson(err, resp)).pipe(resp)
} else if (info.isLeaf) {
resp.set('datFile', info.isLeaf)
return archive.createReadStream(info.isLeaf).on('error', err => onErrorJson(err, resp)).pipe(resp)
} else if (info.isCollection) {
resp.set('datFile', info.isCollection)
resp.set('collection', 'true')
return sendDirListingJson(config, archive, info.isCollection, domain, resp)
}
resp.status(404).send({error: 'Not found'})
})
}
function generatePlace (domain) {
let [name, ...rest] = domain.split('.')
return {name, domain, parent: rest.join('.')}
}
function handleHtmlRoot (config, archiveError, domain, archive, req, resp) {
resp.type('text/html')
if (archiveError) return resp.status(404).send({error: archiveError})
Domain.mode(archive, domain, (error, info) => {
if (error) onErrorJson(error, resp)
resp.set('datKey', archive.key.toString('hex'))
resp.set('datVersion', archive.version)
let developer = {
datKey: archive.key.toString('hex'),
datVersion: archive.version,
dat: `dat clone dat:https://${archive.key.toString('hex')}`,
dns: `dig ${domain} TXT`,
api: `curl -H "Accept: application/json" ${domain}`
}
if (info.isCollectionWithIndex) {
return geojson.center(archive, info.isCollectionWithIndex, (err, geo) => {
//if (err) return server.send(query)
let links = Links(geo.specifiedCenter, domain, info.isCollectionWithIndex)
Collection.asDomainList(config, archive, info.isCollection, domain, (err, collection) => {
let properties = geojson.allProperties(geo.geojson)
geo.geojson = JSON.stringify(geo.geojson)
geo.box = JSON.stringify(geo.box)
let hasProperties = properties.length
let hasGeojson = true
let isCollection = true
return resp.send(Mustache.render(config.template, {config, developer, place: generatePlace(domain), geo, collection, links, properties, hasProperties, hasGeojson, isCollection}))
})
})
} else if (info.isLeaf) {
return geojson.center(archive, info.isLeaf, (err, geo) => {
//if (err) return server.send(query)
let links = Links(geo.specifiedCenter, domain, info.isLeaf)
let properties = geojson.allProperties(geo.geojson)
geo.geojson = JSON.stringify(geo.geojson)
developer.dat = developer.dat + info.isLeaf
geo.box = JSON.stringify(geo.box)
let hasProperties = properties.length
let hasGeojson = true
let isCollection = false
return resp.send(Mustache.render(config.template, {config, developer, place: generatePlace(domain), geo, links, properties, hasProperties, hasGeojson, isCollection}))
})
} else if (info.isCollection) {
return Collection.asDomainListWithGeoInfo(config, archive, info.isCollection, domain, (err, collection, geo) => {
let links = Links(null, domain, info.isCollection)
let properties = geojson.allProperties(geo.geojson)
developer.dat = developer.dat + info.isCollection
geo.geojson = JSON.stringify(geo.geojson)
geo.box = JSON.stringify(geo.box)
let hasProperties = false
let hasGeojson = false
let isCollection = true
return resp.send(Mustache.render(config.template,{config, developer, place: generatePlace(domain), geo, collection, links, properties, hasProperties, hasGeojson, isCollection}))
})
}
resp.status(404).send('<html><body>Not Found</body></html>')
})
}
function handleJsonCollectionListing (config, archiveError, domain, archive, req, resp) {
if (archiveError) return resp.status(404).send({error: archiveError})
if (config.disableCollectionListing) return resp.status(403).send({ok: false, reason: 'collectionListings is disabled'})
Domain.mode(archive, domain, (error, info) => {
if (error) onErrorJson(error, resp)
resp.set('datKey', archive.key.toString('hex'))
resp.set('datVersion', archive.version)
if (info.isCollectionWithIndex) {
resp.set('datFile', info.isCollection)
resp.set('collection', 'true')
return sendDirListingJson(config, archive, info.isCollection, domain, resp)
} else if (info.isLeaf) {
// TODO - revisit this case. WEIRD
resp.set('datFile', info.isLeaf)
return resp.send({ok: true, collection: []})
} else if (info.isCollection) {
resp.set('datFile', info.isCollection)
resp.set('collection', 'true')
return sendDirListingJson(config, archive, info.isCollection, domain, resp)
}
resp.status(404).send({error: 'Not found'})
})
}