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preloadHTTPSE.js
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165 lines (141 loc) · 3.94 KB
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'use strict'
const fs = require('fs')
const https = require('https')
const levelup = require('level')
const rmDir = require('./util').rmDir
const exec = require('child_process').exec
const rulesetURL = 'https://raw.githubusercontent.com/brave/https-everywhere-ruleset/main/httpse.json'
function requestPromise(options) {
return new Promise((resolve, reject) => {
const req = https.request(options.url, res => {
let data = ""
res.setEncoding('binary')
res.on('data', (chunk) => {
data += chunk
})
res.on('end', () => {
resolve(Buffer.from(data, 'binary'))
})
})
req.on('error', error => {
reject(new Error('Unable to fetch: ' + error))
})
req.end()
})
}
const buildDataFiles = buffer => {
// Manually exclude sites that are broken until they are fixed in the next
// HTTPS Everywhere release.
const exclusions = {}
let rulesets = JSON.parse(buffer.toString('utf8'))
if (rulesets != null) {
rulesets = rulesets.rulesets
}
const jsonOutput = {
rulesetStrings: [],
targets: {}
}
for (const ruleset of rulesets) {
if (!ruleset.default_off && !ruleset.platform) {
if (ruleset.name in exclusions) {
console.log('NOTE: Excluding ruleset:', ruleset.name)
continue
}
for (const target of ruleset.target) {
if (!jsonOutput.targets[target]) {
jsonOutput.targets[target] = []
}
jsonOutput.targets[target].push(jsonOutput.rulesetStrings.length)
}
const r = {
ruleset: {
name: ruleset.name,
rule: ruleset.rule.map((rule) => {
return {
from: rule.from,
to: rule.to
}
})
}
}
if (ruleset.exclusion) {
r.exclusion = ruleset.exclusion.map((exclusion) => {
return {
pattern: exclusion
}
})
}
jsonOutput.rulesetStrings.push(r)
}
}
console.log('Writing httpse.json')
fs.writeFileSync('./out/httpse.json', JSON.stringify(jsonOutput), 'utf8')
console.log('creating httpse.leveldb')
rmDir('./out/httpse.leveldb')
const httpseLevelDB = levelup('./out/httpse.leveldb', {
compression: false, errorIfExists: true
})
const batch = httpseLevelDB.batch()
for (const ruleset of rulesets) {
if (!ruleset.default_off && !ruleset.platform) {
if (ruleset.name in exclusions) {
console.log('NOTE: Excluding ruleset:', ruleset.name)
continue
}
let targetRuleSets = []
const rule = {
r: ruleset.rule.map((rule) => {
if (rule.from === '^http:' && rule.to === 'https:') {
return { d: 1 }
} else {
return { f: rule.from, t: rule.to }
}
})
}
if (ruleset.exclusion) {
rule.e = ruleset.exclusion.map((exclusion) => {
return { p: exclusion.pattern }
})
}
targetRuleSets = targetRuleSets.concat(rule)
for (const target of ruleset.target) {
const reverseTarget = target.split('.').reverse().join('.')
if (targetRuleSets.length > 0) {
batch.put(reverseTarget, JSON.stringify(targetRuleSets), {
sync: true
})
}
}
}
}
batch.write((err) => {
if (err) {
console.error(err)
} else {
httpseLevelDB.close((err) => {
if (err) {
console.error(err)
} else {
exec('zip -r -9 httpse.leveldb.zip httpse.leveldb && GZIP=-9 tar -czf httpse.leveldb.tgz httpse.leveldb', {
cwd: 'out'
}, (err) => {
if (err) {
throw err
} else {
rmDir('./out/httpse.leveldb')
console.log('done')
}
})
}
})
}
})
}
rmDir('./out')
fs.mkdirSync('./out')
console.log('downloading rulesets')
requestPromise({
url: rulesetURL,
})
.then(buildDataFiles)
.catch(console.error)