From 450833713b5ed6e9d434f1eafc374648aa39b0a2 Mon Sep 17 00:00:00 2001
From: Xiliang Chen <xlchen1291@gmail.com>
Date: Wed, 2 Nov 2022 11:41:03 +1300
Subject: [PATCH] able to disable signature verification (#36)

---
 executor/src/task.rs | 27 +++++++++++++++++++++++++++
 vendor/smoldot       |  2 +-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/executor/src/task.rs b/executor/src/task.rs
index 480b6479..54abb1bb 100644
--- a/executor/src/task.rs
+++ b/executor/src/task.rs
@@ -41,6 +41,11 @@ pub enum TaskResponse {
     Error(String),
 }
 
+
+fn is_magic_signature(signature: &[u8]) -> bool {
+	signature.starts_with(&[0xde, 0xad, 0xbe, 0xef]) && signature[4..].iter().all(|&b| b == 0xcd)
+}
+
 impl Task {
     pub async fn run(&self, task_id: u32, client: &Client) -> Result<TaskResponse, jsonrpsee::core::Error> {
         let resp = match self.kind {
@@ -122,6 +127,14 @@ impl Task {
                             .await?;
                         req.inject_key(next_key.map(|k| k.0))
                     }
+					RuntimeHostVm::SignatureVerification(req) => {
+						let bypass = is_magic_signature(req.signature().as_ref());
+						if bypass {
+							req.resume_success()
+						} else {
+							req.verify_and_resume()
+						}
+					}
                 }
             };
 
@@ -178,3 +191,17 @@ impl Task {
         )))
     }
 }
+
+#[test]
+fn is_magic_signature_works() {
+	assert!(is_magic_signature(&[0xde, 0xad, 0xbe, 0xef, 0xcd, 0xcd]));
+	assert!(is_magic_signature(&[
+		0xde, 0xad, 0xbe, 0xef, 0xcd, 0xcd, 0xcd, 0xcd
+	]));
+	assert!(!is_magic_signature(&[
+		0xde, 0xad, 0xbe, 0xef, 0xcd, 0xcd, 0xcd, 0x00
+	]));
+	assert!(!is_magic_signature(&[
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+	]));
+}
diff --git a/vendor/smoldot b/vendor/smoldot
index 6df249ea..784982d4 160000
--- a/vendor/smoldot
+++ b/vendor/smoldot
@@ -1 +1 @@
-Subproject commit 6df249ea1835b6118df364c5fc7f39991acf778f
+Subproject commit 784982d4b13a670627e1fe33571fe9f202f3e74e