Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 144 insertions, 0 deletions

diff --git a/vendor/der/src/asn1/teletex_string.rs b/vendor/der/src/asn1/teletex_string.rs
new file mode 100644
index 000000000..7d6621d2d
--- /dev/null
+++ b/vendor/der/src/asn1/teletex_string.rs
@@ -0,0 +1,144 @@
+//! ASN.1 `TeletexString` support.
+
+use crate::{
+    asn1::AnyRef, ord::OrdIsValueOrd, ByteSlice, DecodeValue, EncodeValue, Error, FixedTag, Header,
+    Length, Reader, Result, StrSlice, Tag, Writer,
+};
+use core::{fmt, ops::Deref, str};
+
+/// ASN.1 `TeletexString` type.
+///
+/// Supports a subset the ASCII character set (described below).
+///
+/// For UTF-8, use [`Utf8StringRef`][`crate::asn1::Utf8StringRef`] instead.
+/// For the full ASCII character set, use
+/// [`Ia5StringRef`][`crate::asn1::Ia5StringRef`].
+///
+/// This is a zero-copy reference type which borrows from the input data.
+///
+/// # Supported characters
+///
+/// The standard defines a complex character set allowed in this type. However, quoting the ASN.1
+/// mailing list, "a sizable volume of software in the world treats TeletexString (T61String) as a
+/// simple 8-bit string with mostly Windows Latin 1 (superset of iso-8859-1) encoding".
+///
+#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord)]
+pub struct TeletexStringRef<'a> {
+    /// Inner value
+    inner: StrSlice<'a>,
+}
+
+impl<'a> TeletexStringRef<'a> {
+    /// Create a new ASN.1 `TeletexString`.
+    pub fn new<T>(input: &'a T) -> Result<Self>
+    where
+        T: AsRef<[u8]> + ?Sized,
+    {
+        let input = input.as_ref();
+
+        // FIXME: support higher part of the charset
+        if input.iter().any(|&c| c > 0x7F) {
+            return Err(Self::TAG.value_error());
+        }
+
+        StrSlice::from_bytes(input)
+            .map(|inner| Self { inner })
+            .map_err(|_| Self::TAG.value_error())
+    }
+}
+
+impl<'a> Deref for TeletexStringRef<'a> {
+    type Target = StrSlice<'a>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.inner
+    }
+}
+
+impl AsRef<str> for TeletexStringRef<'_> {
+    fn as_ref(&self) -> &str {
+        self.as_str()
+    }
+}
+
+impl AsRef<[u8]> for TeletexStringRef<'_> {
+    fn as_ref(&self) -> &[u8] {
+        self.as_bytes()
+    }
+}
+
+impl<'a> DecodeValue<'a> for TeletexStringRef<'a> {
+    fn decode_value<R: Reader<'a>>(reader: &mut R, header: Header) -> Result<Self> {
+        Self::new(ByteSlice::decode_value(reader, header)?.as_slice())
+    }
+}
+
+impl<'a> EncodeValue for TeletexStringRef<'a> {
+    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 TeletexStringRef<'_> {
+    const TAG: Tag = Tag::TeletexString;
+}
+
+impl OrdIsValueOrd for TeletexStringRef<'_> {}
+
+impl<'a> From<&TeletexStringRef<'a>> for TeletexStringRef<'a> {
+    fn from(value: &TeletexStringRef<'a>) -> TeletexStringRef<'a> {
+        *value
+    }
+}
+
+impl<'a> TryFrom<AnyRef<'a>> for TeletexStringRef<'a> {
+    type Error = Error;
+
+    fn try_from(any: AnyRef<'a>) -> Result<TeletexStringRef<'a>> {
+        any.decode_into()
+    }
+}
+
+impl<'a> From<TeletexStringRef<'a>> for AnyRef<'a> {
+    fn from(teletex_string: TeletexStringRef<'a>) -> AnyRef<'a> {
+        AnyRef::from_tag_and_value(Tag::TeletexString, teletex_string.inner.into())
+    }
+}
+
+impl<'a> fmt::Display for TeletexStringRef<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str(self.as_str())
+    }
+}
+
+impl<'a> fmt::Debug for TeletexStringRef<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "TeletexString({:?})", self.as_str())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::TeletexStringRef;
+    use crate::Decode;
+    use crate::SliceWriter;
+
+    #[test]
+    fn parse_bytes() {
+        let example_bytes = &[
+            0x14, 0x0b, 0x54, 0x65, 0x73, 0x74, 0x20, 0x55, 0x73, 0x65, 0x72, 0x20, 0x31,
+        ];
+
+        let teletex_string = TeletexStringRef::from_der(example_bytes).unwrap();
+        assert_eq!(teletex_string.as_str(), "Test User 1");
+        let mut out = [0_u8; 30];
+        let mut writer = SliceWriter::new(&mut out);
+        writer.encode(&teletex_string).unwrap();
+        let encoded = writer.finish().unwrap();
+        assert_eq!(encoded, example_bytes);
+    }
+}