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Merge pull request #2666 from overleaf/em-max-json-request-size

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Separate max_doc_length from max JSON request size

GitOrigin-RevId: 4c725028111966bf04109080d80d4672273dd697
This commit is contained in:
nate stemen 2020-03-18 10:26:53 -04:00 • committed by Copybot
parent d717ebb2e0
commit c301d8bc25
3 changed files with 13 additions and 6 deletions
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6
services/web/app/src/infrastructure/Server.js
View file

@ -83,11 +83,7 @@ app.set('view engine', 'pug')
Modules.loadViewIncludes(app)
app.use(bodyParser.urlencoded({ extended: true, limit: '2mb' }))
// Make sure we can process twice the max doc length, to allow for
// - the doc content
// - text ranges spanning the whole doc
// Also allow some overhead for JSON encoding
app.use(bodyParser.json({ limit: 2 * Settings.max_doc_length + 64 * 1024 })) // 64kb overhead
app.use(bodyParser.json({ limit: Settings.max_json_request_size }))
app.use(methodOverride())
app.use(bearerToken())

11
services/web/config/settings.defaults.coffee
View file

@ -429,6 +429,17 @@ module.exports = settings =
# Maximum size of text documents in the real-time editing system.
max_doc_length: 2 * 1024 * 1024 # 2mb
# Maximum JSON size in HTTP requests
# We should be able to process twice the max doc length, to allow for
# - the doc content
# - text ranges spanning the whole doc
#
# There's also overhead required for the JSON encoding and the UTF-8 encoding,
# theoretically up to 3 times the max doc length. On the other hand, we don't
# want to block the event loop with JSON parsing, so we try to find a
# practical compromise.
max_json_request_size: parseInt(process.env["MAX_JSON_REQUEST_SIZE"]) || 6 * 1024 * 1024 # 6 MB
# Internal configs
# ----------------
path:

2
services/web/test/acceptance/src/BodyParserErrorsTest.js
View file

@ -2,7 +2,7 @@ const Settings = require('settings-sharelatex')
const request = require('./helpers/request')
// create a string that is longer than the max allowed (as defined in Server.js)
const wayTooLongString = 'a'.repeat(2 * Settings.max_doc_length + 64 * 1024 + 1)
const wayTooLongString = 'a'.repeat(Settings.max_json_request_size + 1)
describe('BodyParserErrors', function() {
describe('when request is too large', function() {