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add size validation to nip19 decoder.

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fiatjaf 2023-08-31 09:25:09 -03:00
parent 63614bb152
commit b8eeb658cc
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1 changed files with 12 additions and 0 deletions
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12
nip19/nip19.go
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@ -44,6 +44,9 @@ func Decode(bech32string string) (prefix string, value any, err error) {
switch t {
case TLVDefault:
if len(v) < 32 {
return prefix, nil, fmt.Errorf("pubkey is less than 32 bytes (%d)", len(v))
}
result.PublicKey = hex.EncodeToString(v)
case TLVRelay:
result.Relays = append(result.Relays, string(v))
@ -69,10 +72,16 @@ func Decode(bech32string string) (prefix string, value any, err error) {
switch t {
case TLVDefault:
if len(v) < 32 {
return prefix, nil, fmt.Errorf("id is less than 32 bytes (%d)", len(v))
}
result.ID = hex.EncodeToString(v)
case TLVRelay:
result.Relays = append(result.Relays, string(v))
case TLVAuthor:
if len(v) < 32 {
return prefix, nil, fmt.Errorf("author is less than 32 bytes (%d)", len(v))
}
result.Author = hex.EncodeToString(v)
case TLVKind:
result.Kind = int(binary.BigEndian.Uint32(v))
@ -102,6 +111,9 @@ func Decode(bech32string string) (prefix string, value any, err error) {
case TLVRelay:
result.Relays = append(result.Relays, string(v))
case TLVAuthor:
if len(v) < 32 {
return prefix, nil, fmt.Errorf("author is less than 32 bytes (%d)", len(v))
}
result.PublicKey = hex.EncodeToString(v)
case TLVKind:
result.Kind = int(binary.BigEndian.Uint32(v))