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fix(lib/lycoris&lulu) Repair decode json and work LuluStream #810

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Hayanek merged 14 commits from fix-lycoris into main 2025-04-06 13:41:23 -05:00
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1 changed files with 15 additions and 14 deletions
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29
lib/lulu-extractor/src/main/java/eu/kanade/tachiyomi/lib/luluextractor/LuluExtractor.kt
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@ -104,26 +104,27 @@ class LuluExtractor(private val client: OkHttpClient) {
object JavaScriptUnpacker {
private val UNPACK_REGEX by lazy {
Regex("""\}\('(.*)', *(\d+), *(\d+), *'(.*?)'\.split\('\|'\)""")
Regex("""\}\('(.*)', *(\d+), *(\d+), *'(.*?)'\.split\('\|'\)""",
RegexOption.DOT_MATCHES_ALL)
}
fun unpack(encodedJs: String): String? {
val match = UNPACK_REGEX.find(encodedJs) ?: return null
val (payload, radixStr, countStr, symtabStr) = match.destructured
val match = UNPACK_REGEX.find(encodedJs) ?: return null
val (payload, radixStr, countStr, symtabStr) = match.destructured
val radix = radixStr.toIntOrNull() ?: return null
val count = countStr.toIntOrNull() ?: return null
val symtab = symtabStr.split('|')
val radix = radixStr.toIntOrNull() ?: return null
val count = countStr.toIntOrNull() ?: return null
val symtab = symtabStr.split('|')
if (symtab.size != count) throw IllegalArgumentException("Invalid symtab size")
if (symtab.size != count) throw IllegalArgumentException("Invalid symtab size")
val baseDict = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
.take(radix)
.withIndex()
.associate { it.value to it.index }
val baseDict = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
.take(radix)
.withIndex()
.associate { it.value to it.index }
return Regex("""\b\w+\b""").replace(payload) { mr ->
symtab.getOrNull(unbase(mr.value, radix, baseDict)) ?: mr.value
}.replace("\\", "")
return Regex("""\b\w+\b""").replace(payload) { mr ->
symtab.getOrNull(unbase(mr.value, radix, baseDict)) ?: mr.value
}.replace("\\", "")
}
private fun unbase(value: String, radix: Int, dict: Map<Char, Int>): Int {