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avoid infinite loop in Tangle.precedes()

This commit is contained in:
Andre Staltz 2024-01-17 15:47:58 +02:00
parent 001fcaa1ab
commit 17742f9ed2
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1 changed files with 8 additions and 2 deletions
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10
lib/msg-v4/tangle.js
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@ -296,13 +296,19 @@ class Tangle {
if (msgAID === msgBID) return false if (msgAID === msgBID) return false
if (msgBID === this.#rootID) return false if (msgBID === this.#rootID) return false
let toCheck = [msgBID] let toCheck = [msgBID]
const checked = new Set()
while (toCheck.length > 0) { while (toCheck.length > 0) {
const checking = /** @type {string} */ (toCheck.shift()) const checking = /** @type {string} */ (toCheck.shift())
checked.add(checking)
const prev = this.#prev.get(checking) const prev = this.#prev.get(checking)
if (!prev) continue if (!prev) continue
if (prev.includes(msgAID)) return true if (prev.includes(msgAID)) {
toCheck.push(...prev) checked.clear()
return true
} }
toCheck.push(...prev.filter((p) => !checked.has(p)))
}
checked.clear()
return false return false
} }