74 lines
2.2 KiB
Rust
74 lines
2.2 KiB
Rust
use minidom::Element;
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use error::Error;
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use ns;
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#[derive(Debug, Clone, PartialEq)]
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pub struct Hash {
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pub algo: String,
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pub hash: String,
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}
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pub fn parse_hash(root: &Element) -> Result<Hash, Error> {
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if !root.is("hash", ns::HASHES) {
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return Err(Error::ParseError("This is not a hash element."));
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}
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for _ in root.children() {
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return Err(Error::ParseError("Unknown child in hash element."));
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}
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let algo = root.attr("algo").ok_or(Error::ParseError("Mandatory argument 'algo' not present in hash element."))?.to_owned();
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let hash = match root.text().as_ref() {
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"" => return Err(Error::ParseError("Hash element shouldn’t be empty.")),
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text => text.to_owned(),
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};
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Ok(Hash {
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algo: algo,
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hash: hash,
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})
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}
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pub fn serialise(hash: &Hash) -> Element {
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Element::builder("hash")
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.ns(ns::HASHES)
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.attr("algo", hash.algo.clone())
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.append(hash.hash.clone())
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.build()
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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 hashes;
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#[test]
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fn test_simple() {
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let elem: Element = "<hash xmlns='urn:xmpp:hashes:2' algo='sha-256'>2XarmwTlNxDAMkvymloX3S5+VbylNrJt/l5QyPa+YoU=</hash>".parse().unwrap();
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let hash = hashes::parse_hash(&elem).unwrap();
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assert_eq!(hash.algo, "sha-256");
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assert_eq!(hash.hash, "2XarmwTlNxDAMkvymloX3S5+VbylNrJt/l5QyPa+YoU=");
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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 = hashes::parse_hash(&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 a hash 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 = "<hash xmlns='urn:xmpp:hashes:2'><coucou/></hash>".parse().unwrap();
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let error = hashes::parse_hash(&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 hash element.");
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}
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}
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