69 lines
2.4 KiB
Rust
69 lines
2.4 KiB
Rust
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use minidom::Element;
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use error::Error;
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use ns;
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#[derive(Debug, Clone)]
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pub struct ExplicitMessageEncryption {
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pub namespace: String,
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pub name: Option<String>,
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}
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pub fn parse_explicit_message_encryption(root: &Element) -> Result<ExplicitMessageEncryption, Error> {
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if !root.is("encryption", ns::EME) {
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return Err(Error::ParseError("This is not an encryption element."));
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}
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for _ in root.children() {
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return Err(Error::ParseError("Unknown child in encryption element."));
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}
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let namespace = root.attr("namespace").ok_or(Error::ParseError("Mandatory argument 'namespace' not present in encryption element."))?.to_owned();
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let name = root.attr("name").and_then(|value| value.parse().ok());
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Ok(ExplicitMessageEncryption {
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namespace: namespace,
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name: name,
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})
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}
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#[cfg(test)]
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mod tests {
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use minidom::Element;
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use error::Error;
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use eme;
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#[test]
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fn test_simple() {
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let elem: Element = "<encryption xmlns='urn:xmpp:eme:0' namespace='urn:xmpp:otr:0'/>".parse().unwrap();
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let encryption = eme::parse_explicit_message_encryption(&elem).unwrap();
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assert_eq!(encryption.namespace, "urn:xmpp:otr:0");
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assert_eq!(encryption.name, None);
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let elem: Element = "<encryption xmlns='urn:xmpp:eme:0' namespace='some.unknown.mechanism' name='SuperMechanism'/>".parse().unwrap();
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let encryption = eme::parse_explicit_message_encryption(&elem).unwrap();
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assert_eq!(encryption.namespace, "some.unknown.mechanism");
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assert_eq!(encryption.name, Some(String::from("SuperMechanism")));
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}
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#[test]
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fn test_unknown() {
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let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0'/>".parse().unwrap();
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let error = eme::parse_explicit_message_encryption(&elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "This is not an encryption element.");
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}
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#[test]
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fn test_invalid_child() {
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let elem: Element = "<encryption xmlns='urn:xmpp:eme:0'><coucou/></encryption>".parse().unwrap();
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let error = eme::parse_explicit_message_encryption(&elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown child in encryption element.");
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}
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}
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