From 10ee2acdd26a7f1298c6f6d6b7af9b469fe29b87 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 4 May 2024 14:41:41 +0200
Subject: Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/der/src/asn1/octet_string.rs | 182 ++++++++++++++++++++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 vendor/der/src/asn1/octet_string.rs

(limited to 'vendor/der/src/asn1/octet_string.rs')

diff --git a/vendor/der/src/asn1/octet_string.rs b/vendor/der/src/asn1/octet_string.rs
new file mode 100644
index 000000000..6f5b91a3d
--- /dev/null
+++ b/vendor/der/src/asn1/octet_string.rs
@@ -0,0 +1,182 @@
+//! ASN.1 `OCTET STRING` support.
+
+use crate::{
+    asn1::AnyRef, ord::OrdIsValueOrd, ByteSlice, DecodeValue, EncodeValue, Error, ErrorKind,
+    FixedTag, Header, Length, Reader, Result, Tag, Writer,
+};
+
+#[cfg(feature = "alloc")]
+use alloc::vec::Vec;
+
+/// ASN.1 `OCTET STRING` type: borrowed form.
+///
+/// Octet strings represent contiguous sequences of octets, a.k.a. bytes.
+///
+/// This is a zero-copy reference type which borrows from the input data.
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+pub struct OctetStringRef<'a> {
+    /// Inner value
+    inner: ByteSlice<'a>,
+}
+
+impl<'a> OctetStringRef<'a> {
+    /// Create a new ASN.1 `OCTET STRING` from a byte slice.
+    pub fn new(slice: &'a [u8]) -> Result<Self> {
+        ByteSlice::new(slice)
+            .map(|inner| Self { inner })
+            .map_err(|_| ErrorKind::Length { tag: Self::TAG }.into())
+    }
+
+    /// Borrow the inner byte slice.
+    pub fn as_bytes(&self) -> &'a [u8] {
+        self.inner.as_slice()
+    }
+
+    /// Get the length of the inner byte slice.
+    pub fn len(&self) -> Length {
+        self.inner.len()
+    }
+
+    /// Is the inner byte slice empty?
+    pub fn is_empty(&self) -> bool {
+        self.inner.is_empty()
+    }
+}
+
+impl AsRef<[u8]> for OctetStringRef<'_> {
+    fn as_ref(&self) -> &[u8] {
+        self.as_bytes()
+    }
+}
+
+impl<'a> DecodeValue<'a> for OctetStringRef<'a> {
+    fn decode_value<R: Reader<'a>>(reader: &mut R, header: Header) -> Result<Self> {
+        let inner = ByteSlice::decode_value(reader, header)?;
+        Ok(Self { inner })
+    }
+}
+
+impl EncodeValue for OctetStringRef<'_> {
+    fn value_len(&self) -> Result<Length> {
+        self.inner.value_len()
+    }
+
+    fn encode_value(&self, writer: &mut dyn Writer) -> Result<()> {
+        self.inner.encode_value(writer)
+    }
+}
+
+impl FixedTag for OctetStringRef<'_> {
+    const TAG: Tag = Tag::OctetString;
+}
+
+impl OrdIsValueOrd for OctetStringRef<'_> {}
+
+impl<'a> From<&OctetStringRef<'a>> for OctetStringRef<'a> {
+    fn from(value: &OctetStringRef<'a>) -> OctetStringRef<'a> {
+        *value
+    }
+}
+
+impl<'a> TryFrom<AnyRef<'a>> for OctetStringRef<'a> {
+    type Error = Error;
+
+    fn try_from(any: AnyRef<'a>) -> Result<OctetStringRef<'a>> {
+        any.decode_into()
+    }
+}
+
+impl<'a> From<OctetStringRef<'a>> for AnyRef<'a> {
+    fn from(octet_string: OctetStringRef<'a>) -> AnyRef<'a> {
+        AnyRef::from_tag_and_value(Tag::OctetString, octet_string.inner)
+    }
+}
+
+impl<'a> From<OctetStringRef<'a>> for &'a [u8] {
+    fn from(octet_string: OctetStringRef<'a>) -> &'a [u8] {
+        octet_string.as_bytes()
+    }
+}
+
+/// ASN.1 `OCTET STRING` type: owned form..
+///
+/// Octet strings represent contiguous sequences of octets, a.k.a. bytes.
+///
+/// This type provides the same functionality as [`OctetStringRef`] but owns
+/// the backing data.
+#[cfg(feature = "alloc")]
+#[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
+#[derive(Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+pub struct OctetString {
+    /// Bitstring represented as a slice of bytes.
+    inner: Vec<u8>,
+}
+
+#[cfg(feature = "alloc")]
+impl OctetString {
+    /// Create a new ASN.1 `OCTET STRING`.
+    pub fn new(bytes: impl Into<Vec<u8>>) -> Result<Self> {
+        let inner = bytes.into();
+
+        // Ensure the bytes parse successfully as an `OctetStringRef`
+        OctetStringRef::new(&inner)?;
+
+        Ok(Self { inner })
+    }
+
+    /// Borrow the inner byte slice.
+    pub fn as_bytes(&self) -> &[u8] {
+        self.inner.as_slice()
+    }
+
+    /// Get the length of the inner byte slice.
+    pub fn len(&self) -> Length {
+        self.value_len().expect("invalid OCTET STRING length")
+    }
+
+    /// Is the inner byte slice empty?
+    pub fn is_empty(&self) -> bool {
+        self.inner.is_empty()
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl AsRef<[u8]> for OctetString {
+    fn as_ref(&self) -> &[u8] {
+        self.as_bytes()
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl<'a> DecodeValue<'a> for OctetString {
+    fn decode_value<R: Reader<'a>>(reader: &mut R, header: Header) -> Result<Self> {
+        Self::new(reader.read_vec(header.length)?)
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl EncodeValue for OctetString {
+    fn value_len(&self) -> Result<Length> {
+        self.inner.len().try_into()
+    }
+
+    fn encode_value(&self, writer: &mut dyn Writer) -> Result<()> {
+        writer.write(&self.inner)
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl FixedTag for OctetString {
+    const TAG: Tag = Tag::OctetString;
+}
+
+#[cfg(feature = "alloc")]
+impl<'a> From<&'a OctetString> for OctetStringRef<'a> {
+    fn from(octet_string: &'a OctetString) -> OctetStringRef<'a> {
+        // Ensured to parse successfully in constructor
+        OctetStringRef::new(&octet_string.inner).expect("invalid OCTET STRING")
+    }
+}
+
+#[cfg(feature = "alloc")]
+impl OrdIsValueOrd for OctetString {}
-- 
cgit v1.2.3