From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 16:29:10 +0200
Subject: Adding upstream version 86.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 third_party/rust/hawk/src/payload.rs | 87 ++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 third_party/rust/hawk/src/payload.rs

(limited to 'third_party/rust/hawk/src/payload.rs')

diff --git a/third_party/rust/hawk/src/payload.rs b/third_party/rust/hawk/src/payload.rs
new file mode 100644
index 0000000000..3b872eaf4b
--- /dev/null
+++ b/third_party/rust/hawk/src/payload.rs
@@ -0,0 +1,87 @@
+use crate::error::*;
+use crate::{crypto, DigestAlgorithm};
+/// A utility for hashing payloads. Feed your entity body to this, then pass the `finish`
+/// result to a request or response.
+pub struct PayloadHasher(Box<dyn crypto::Hasher>);
+
+impl PayloadHasher {
+    /// Create a new PayloadHasher. The `content_type` should be lower-case and should
+    /// not include parameters. The digest is assumed to be the same as the digest used
+    /// for the credentials in the request.
+    pub fn new<B>(content_type: B, algorithm: DigestAlgorithm) -> Result<Self>
+    where
+        B: AsRef<[u8]>,
+    {
+        let mut hasher = PayloadHasher(crypto::new_hasher(algorithm)?);
+        hasher.update(b"hawk.1.payload\n")?;
+        hasher.update(content_type.as_ref())?;
+        hasher.update(b"\n")?;
+        Ok(hasher)
+    }
+
+    /// Hash a single value and return it
+    pub fn hash<B1, B2>(
+        content_type: B1,
+        algorithm: DigestAlgorithm,
+        payload: B2,
+    ) -> Result<Vec<u8>>
+    where
+        B1: AsRef<[u8]>,
+        B2: AsRef<[u8]>,
+    {
+        let mut hasher = PayloadHasher::new(content_type, algorithm)?;
+        hasher.update(payload)?;
+        hasher.finish()
+    }
+
+    /// Update the hash with new data.
+    pub fn update<B>(&mut self, data: B) -> Result<()>
+    where
+        B: AsRef<[u8]>,
+    {
+        self.0.update(data.as_ref())?;
+        Ok(())
+    }
+
+    /// Finish hashing and return the result
+    ///
+    /// Note that this appends a newline to the payload, as does the JS Hawk implementaiton.
+    pub fn finish(mut self) -> Result<Vec<u8>> {
+        self.update(b"\n")?;
+        Ok(self.0.finish()?)
+    }
+}
+
+#[cfg(all(test, any(feature = "use_ring", feature = "use_openssl")))]
+mod tests {
+    use super::PayloadHasher;
+
+    #[test]
+    fn hash_consistency() -> super::Result<()> {
+        let mut hasher1 = PayloadHasher::new("text/plain", crate::SHA256)?;
+        hasher1.update("pày")?;
+        hasher1.update("load")?;
+        let hash1 = hasher1.finish()?;
+
+        let mut hasher2 = PayloadHasher::new("text/plain", crate::SHA256)?;
+        hasher2.update("pàyload")?;
+        let hash2 = hasher2.finish()?;
+
+        let hash3 = PayloadHasher::hash("text/plain", crate::SHA256, "pàyload")?;
+
+        let hash4 = // "pàyload" as utf-8 bytes
+            PayloadHasher::hash("text/plain", crate::SHA256, vec![112, 195, 160, 121, 108, 111, 97, 100])?;
+
+        assert_eq!(
+            hash1,
+            vec![
+                228, 238, 241, 224, 235, 114, 158, 112, 211, 254, 118, 89, 25, 236, 87, 176, 181,
+                54, 61, 135, 42, 223, 188, 103, 194, 59, 83, 36, 136, 31, 198, 50
+            ]
+        );
+        assert_eq!(hash2, hash1);
+        assert_eq!(hash3, hash1);
+        assert_eq!(hash4, hash1);
+        Ok(())
+    }
+}
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