shell bypass 403
'use strict'
var asciiControl = require('../character/ascii-control.js')
var markdownLineEndingOrSpace = require('../character/markdown-line-ending-or-space.js')
var markdownLineEnding = require('../character/markdown-line-ending.js')
// eslint-disable-next-line max-params
function destinationFactory(
effects,
ok,
nok,
type,
literalType,
literalMarkerType,
rawType,
stringType,
max
) {
var limit = max || Infinity
var balance = 0
return start
function start(code) {
if (code === 60) {
effects.enter(type)
effects.enter(literalType)
effects.enter(literalMarkerType)
effects.consume(code)
effects.exit(literalMarkerType)
return destinationEnclosedBefore
}
if (asciiControl(code) || code === 41) {
return nok(code)
}
effects.enter(type)
effects.enter(rawType)
effects.enter(stringType)
effects.enter('chunkString', {
contentType: 'string'
})
return destinationRaw(code)
}
function destinationEnclosedBefore(code) {
if (code === 62) {
effects.enter(literalMarkerType)
effects.consume(code)
effects.exit(literalMarkerType)
effects.exit(literalType)
effects.exit(type)
return ok
}
effects.enter(stringType)
effects.enter('chunkString', {
contentType: 'string'
})
return destinationEnclosed(code)
}
function destinationEnclosed(code) {
if (code === 62) {
effects.exit('chunkString')
effects.exit(stringType)
return destinationEnclosedBefore(code)
}
if (code === null || code === 60 || markdownLineEnding(code)) {
return nok(code)
}
effects.consume(code)
return code === 92 ? destinationEnclosedEscape : destinationEnclosed
}
function destinationEnclosedEscape(code) {
if (code === 60 || code === 62 || code === 92) {
effects.consume(code)
return destinationEnclosed
}
return destinationEnclosed(code)
}
function destinationRaw(code) {
if (code === 40) {
if (++balance > limit) return nok(code)
effects.consume(code)
return destinationRaw
}
if (code === 41) {
if (!balance--) {
effects.exit('chunkString')
effects.exit(stringType)
effects.exit(rawType)
effects.exit(type)
return ok(code)
}
effects.consume(code)
return destinationRaw
}
if (code === null || markdownLineEndingOrSpace(code)) {
if (balance) return nok(code)
effects.exit('chunkString')
effects.exit(stringType)
effects.exit(rawType)
effects.exit(type)
return ok(code)
}
if (asciiControl(code)) return nok(code)
effects.consume(code)
return code === 92 ? destinationRawEscape : destinationRaw
}
function destinationRawEscape(code) {
if (code === 40 || code === 41 || code === 92) {
effects.consume(code)
return destinationRaw
}
return destinationRaw(code)
}
}
module.exports = destinationFactory