From 0b7031437905d5e7dac228d2af05cd8a507c7a04 Mon Sep 17 00:00:00 2001
From: stelar7 <dudedbz@gmail.com>
Date: Wed, 12 Apr 2023 15:05:08 +0200
Subject: LibCrypto: Store the TBS ASN.1 data on the certificate

This way we dont need to guess the offsets in LibTLS when using it.
---
 Userland/Libraries/LibCrypto/ASN1/DER.cpp | 10 ++++++++++
 Userland/Libraries/LibCrypto/ASN1/DER.h   |  2 ++
 2 files changed, 12 insertions(+)

(limited to 'Userland/Libraries/LibCrypto')

diff --git a/Userland/Libraries/LibCrypto/ASN1/DER.cpp b/Userland/Libraries/LibCrypto/ASN1/DER.cpp
index cbd7167921..262a12454b 100644
--- a/Userland/Libraries/LibCrypto/ASN1/DER.cpp
+++ b/Userland/Libraries/LibCrypto/ASN1/DER.cpp
@@ -67,6 +67,16 @@ ErrorOr<u8> Decoder::read_byte()
     return byte;
 }
 
+ErrorOr<ReadonlyBytes> Decoder::peek_entry_bytes()
+{
+    if (m_stack.is_empty())
+        return Error::from_string_literal("ASN1::Decoder: Reading bytes from an empty stack");
+
+    auto entry = m_stack.last();
+
+    return entry;
+}
+
 ErrorOr<ReadonlyBytes> Decoder::read_bytes(size_t length)
 {
     if (m_stack.is_empty())
diff --git a/Userland/Libraries/LibCrypto/ASN1/DER.h b/Userland/Libraries/LibCrypto/ASN1/DER.h
index 63829c95b2..8138461e38 100644
--- a/Userland/Libraries/LibCrypto/ASN1/DER.h
+++ b/Userland/Libraries/LibCrypto/ASN1/DER.h
@@ -151,6 +151,8 @@ public:
     ErrorOr<void> enter();
     ErrorOr<void> leave();
 
+    ErrorOr<ReadonlyBytes> peek_entry_bytes();
+
 private:
     template<typename ValueType, typename DecodedType>
     ErrorOr<ValueType> with_type_check(DecodedType&& value)
-- 
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