overleaf/server-ce/test/host-admin.js

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const fs = require('fs')
const Path = require('path')
const { execFile } = require('child_process')
const express = require('express')
const bodyParser = require('body-parser')
const {
celebrate: validate,
Joi,
errors: handleValidationErrors,
} = require('celebrate')
const YAML = require('js-yaml')
const PATHS = {
DOCKER_COMPOSE_OVERRIDE: 'docker-compose.override.yml',
DATA_DIR: Path.join(__dirname, 'data'),
SANDBOXED_COMPILES_HOST_DIR: Path.join(__dirname, 'data/compiles'),
}
const IMAGES = {
CE: process.env.IMAGE_TAG_CE.replace(/:.+/, ''),
PRO: process.env.IMAGE_TAG_PRO.replace(/:.+/, ''),
}
let mongoIsInitialized = false
function readDockerComposeOverride() {
try {
return YAML.load(fs.readFileSync(PATHS.DOCKER_COMPOSE_OVERRIDE, 'utf-8'))
} catch (error) {
if (error.code !== 'ENOENT') {
throw error
}
return {
services: {
sharelatex: {
environment: {},
},
'git-bridge': {},
},
}
}
}
function writeDockerComposeOverride(cfg) {
fs.writeFileSync(PATHS.DOCKER_COMPOSE_OVERRIDE, YAML.dump(cfg))
}
function purgeDataDir() {
fs.rmSync(PATHS.DATA_DIR, { recursive: true, force: true })
}
const app = express()
app.get('/status', (req, res) => {
res.send('host-admin is up')
})
app.use(bodyParser.json())
app.use((req, res, next) => {
// Basic access logs
console.log(req.method, req.url, req.body)
// Add CORS headers
res.setHeader('Access-Control-Allow-Origin', 'http://sharelatex')
res.setHeader('Access-Control-Allow-Headers', 'Content-Type')
res.setHeader('Access-Control-Max-Age', '3600')
next()
})
app.post(
'/run/script',
validate(
{
body: {
cwd: Joi.string().required(),
script: Joi.string().required(),
args: Joi.array().items(Joi.string()),
},
},
{ allowUnknown: false }
),
(req, res) => {
const { cwd, script, args } = req.body
execFile(
'docker',
[
'compose',
'exec',
'sharelatex',
'bash',
'-c',
`source /etc/container_environment.sh && source /etc/overleaf/env.sh || source /etc/sharelatex/env.sh && cd ${JSON.stringify(cwd)} && node ${JSON.stringify(script)} ${args.map(a => JSON.stringify(a)).join(' ')}`,
],
(error, stdout, stderr) => {
res.json({
error,
stdout,
stderr,
})
}
)
}
)
const allowedVars = Joi.object(
Object.fromEntries(
[
'OVERLEAF_APP_NAME',
'OVERLEAF_LEFT_FOOTER',
'OVERLEAF_RIGHT_FOOTER',
'OVERLEAF_PROXY_LEARN',
'GIT_BRIDGE_ENABLED',
'GIT_BRIDGE_HOST',
'GIT_BRIDGE_PORT',
'V1_HISTORY_URL',
'DOCKER_RUNNER',
'SANDBOXED_COMPILES',
'SANDBOXED_COMPILES_SIBLING_CONTAINERS',
'ALL_TEX_LIVE_DOCKER_IMAGE_NAMES',
'OVERLEAF_TEMPLATES_USER_ID',
'OVERLEAF_NEW_PROJECT_TEMPLATE_LINKS',
'OVERLEAF_ALLOW_PUBLIC_ACCESS',
'OVERLEAF_ALLOW_ANONYMOUS_READ_AND_WRITE_SHARING',
// Old branding, used for upgrade tests
'SHARELATEX_MONGO_URL',
'SHARELATEX_REDIS_HOST',
].map(name => [name, Joi.string()])
)
)
function setVarsDockerCompose({ pro, vars, version, withDataDir }) {
const cfg = readDockerComposeOverride()
cfg.services.sharelatex.image = `${pro ? IMAGES.PRO : IMAGES.CE}:${version}`
cfg.services['git-bridge'].image = `quay.io/sharelatex/git-bridge:${version}`
cfg.services.sharelatex.environment = vars
if (cfg.services.sharelatex.environment.GIT_BRIDGE_ENABLED === 'true') {
cfg.services.sharelatex.depends_on = ['git-bridge']
} else {
cfg.services.sharelatex.depends_on = []
}
const dataDirInContainer =
version === 'latest' || version >= '5.0'
? '/var/lib/overleaf/data'
: '/var/lib/sharelatex/data'
cfg.services.sharelatex.volumes = []
if (withDataDir) {
cfg.services.sharelatex.volumes.push(
`${PATHS.DATA_DIR}:${dataDirInContainer}`
)
}
if (
cfg.services.sharelatex.environment
.SANDBOXED_COMPILES_SIBLING_CONTAINERS === 'true'
) {
cfg.services.sharelatex.environment.SANDBOXED_COMPILES_HOST_DIR =
PATHS.SANDBOXED_COMPILES_HOST_DIR
cfg.services.sharelatex.environment.TEX_LIVE_DOCKER_IMAGE =
process.env.TEX_LIVE_DOCKER_IMAGE
cfg.services.sharelatex.environment.ALL_TEX_LIVE_DOCKER_IMAGES =
process.env.ALL_TEX_LIVE_DOCKER_IMAGES
cfg.services.sharelatex.volumes.push(
'/var/run/docker.sock:/var/run/docker.sock'
)
if (!withDataDir) {
cfg.services.sharelatex.volumes.push(
`${PATHS.SANDBOXED_COMPILES_HOST_DIR}:${dataDirInContainer}/compiles`
)
}
}
writeDockerComposeOverride(cfg)
}
app.post(
'/docker/compose/:cmd',
validate(
{
body: {
args: Joi.array().allow(
'--detach',
'--wait',
'--volumes',
'--timeout',
'0',
'sharelatex',
'git-bridge',
'mongo',
'redis'
),
},
params: {
cmd: Joi.allow('up', 'stop', 'down', 'ps', 'logs'),
},
},
{ allowUnknown: false }
),
(req, res) => {
const { cmd } = req.params
const { args } = req.body
if (['stop', 'down'].includes(cmd)) {
mongoIsInitialized = false
}
execFile('docker', ['compose', cmd, ...args], (error, stdout, stderr) => {
res.json({ error, stdout, stderr })
})
}
)
function mongoInit(callback) {
execFile(
'docker',
['compose', 'up', '--detach', '--wait', 'mongo'],
(error, stdout, stderr) => {
if (error) return callback(error, stdout, stderr)
execFile(
'docker',
[
'compose',
'exec',
'mongo',
'mongo',
'--eval',
'rs.initiate({ _id: "overleaf", members: [ { _id: 0, host: "mongo:27017" } ] })',
],
(error, stdout, stderr) => {
if (!error) {
mongoIsInitialized = true
}
callback(error, stdout, stderr)
}
)
}
)
}
app.post('/mongo/init', (req, res) => {
mongoInit((error, stdout, stderr) => {
res.json({ error, stdout, stderr })
})
})
app.post(
'/reconfigure',
validate(
{
body: {
pro: Joi.boolean().required(),
version: Joi.string().required(),
vars: allowedVars,
withDataDir: Joi.boolean().optional(),
},
},
{ allowUnknown: false }
),
(req, res) => {
const { pro, version, vars, withDataDir } = req.body
try {
setVarsDockerCompose({ pro, version, vars, withDataDir })
} catch (error) {
return res.json({ error })
}
const doMongoInit = mongoIsInitialized ? cb => cb() : mongoInit
doMongoInit((error, stdout, stderr) => {
if (error) return res.json({ error, stdout, stderr })
execFile(
'docker',
['compose', 'up', '--detach', '--wait', 'sharelatex'],
(error, stdout, stderr) => {
res.json({ error, stdout, stderr })
}
)
})
}
)
app.post('/reset/data', (req, res) => {
execFile(
'docker',
['compose', 'stop', '--timeout=0', 'sharelatex'],
(error, stdout, stderr) => {
if (error) return res.json({ error, stdout, stderr })
try {
purgeDataDir()
} catch (error) {
return res.json({ error })
}
mongoIsInitialized = false
execFile(
'docker',
['compose', 'down', '--timeout=0', '--volumes', 'mongo', 'redis'],
(error, stdout, stderr) => {
res.json({ error, stdout, stderr })
}
)
}
)
})
app.use(handleValidationErrors())
purgeDataDir()
// Init on startup
mongoInit(err => {
if (err) {
console.error('mongo init failed', err)
process.exit(1)
}
app.listen(80)
})