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crypto: simplify Hmac::HmacUpdate #22132

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crypto: simplify Hmac::HmacUpdate #22132

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11 changes: 5 additions & 6 deletions src/node_crypto.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -3252,15 +3252,14 @@ void Hmac::HmacUpdate(const FunctionCallbackInfo<Value>& args) {
ASSIGN_OR_RETURN_UNWRAP(&hmac, args.Holder());

// Only copy the data if we have to, because it's a string
bool r = true;
bool r = false;
if (args[0]->IsString()) {
StringBytes::InlineDecoder decoder;
if (!decoder.Decode(env, args[0].As<String>(), args[1], UTF8)) {
args.GetReturnValue().Set(false);
return;
if (decoder.Decode(env, args[0].As<String>(), args[1], UTF8)) {
r = hmac->HmacUpdate(decoder.out(), decoder.size());
}
r = hmac->HmacUpdate(decoder.out(), decoder.size());
} else if (args[0]->IsArrayBufferView()) {
} else {
CHECK(args[0]->IsArrayBufferView());
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Does this work as expected? We weren't exactly crashing at an illegal argument before. It must be fine if it's type-checked in JS-land (in which case, do we even need it?)

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It is being type-checked in JS, but in case someone calls the binding directly or finds a way to avoid JS type-checking, this is here for safety.

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Sounds good!

char* buf = Buffer::Data(args[0]);
size_t buflen = Buffer::Length(args[0]);
r = hmac->HmacUpdate(buf, buflen);
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