Documentation
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Overview ¶
Package guard checks a BRC-74 BUMP someone else supplied before the SDK is allowed to allocate for it.
A BUMP reader that sizes a slice from a wire count can be asked, by a handful of bytes, for an allocation that ends the process with an out-of-memory no recover() sees. go-sdk v1.5.2 bounds its leaf count itself, which is why that version is the floor, but whoever serves a proof is one more party choosing the bytes, and the rule for length-prefixed data from any other party is that a declared length is a claim, checked against the bytes present before it sizes memory.
There is no BEEF counterpart: go-sdk v1.5.2's BEEF parser bounds every count against the bytes remaining.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
func ParseBUMP ¶
func ParseBUMP(b []byte, bound int) (mp *transaction.MerklePath, err error)
ParseBUMP guards and parses one BRC-74 BUMP of at most bound bytes. The bound is the caller's, since only the caller knows how large an answer it was prepared to read; a bound of zero or less admits nothing.
The parse runs under a recover, so a malformed proof is an error and never a crash.
Types ¶
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Source Files