261 lines
8.6 KiB
Rust
261 lines
8.6 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use std::convert::TryFrom;
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use std::str::FromStr;
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use minidom::{Element, IntoElements, IntoAttributeValue, ElementEmitter};
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use jid::Jid;
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use error::Error;
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use ns;
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type Group = String;
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generate_attribute!(Subscription, "subscription", {
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None => "none",
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From => "from",
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To => "to",
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Both => "both",
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Remove => "remove",
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});
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#[derive(Debug, Clone, PartialEq)]
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pub struct Item {
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pub jid: Jid,
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pub name: Option<String>,
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pub subscription: Option<Subscription>,
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pub groups: Vec<Group>,
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}
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impl TryFrom<Element> for Item {
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type Error = Error;
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fn try_from(elem: Element) -> Result<Item, Error> {
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if !elem.is("item", ns::ROSTER) {
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return Err(Error::ParseError("This is not a roster item element."));
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}
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let mut item = Item {
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jid: get_attr!(elem, "jid", required),
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name: get_attr!(elem, "name", optional).and_then(|name| if name == "" { None } else { Some(name) }),
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subscription: get_attr!(elem, "subscription", optional),
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groups: vec!(),
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};
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for child in elem.children() {
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if !child.is("group", ns::ROSTER) {
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return Err(Error::ParseError("Unknown element in roster item element."));
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}
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for _ in child.children() {
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return Err(Error::ParseError("Roster item group can’t have children."));
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}
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item.groups.push(child.text());
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}
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Ok(item)
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}
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}
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impl Into<Element> for Item {
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fn into(self) -> Element {
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Element::builder("item")
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.ns(ns::ROSTER)
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.attr("jid", String::from(self.jid))
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.attr("name", self.name)
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.attr("subscription", self.subscription)
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.append(self.groups)
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.build()
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}
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}
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impl IntoElements for Item {
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fn into_elements(self, emitter: &mut ElementEmitter) {
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emitter.append_child(self.into());
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}
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}
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#[derive(Debug, Clone)]
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pub struct Roster {
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pub ver: Option<String>,
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pub items: Vec<Item>,
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}
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impl TryFrom<Element> for Roster {
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type Error = Error;
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fn try_from(elem: Element) -> Result<Roster, Error> {
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if !elem.is("query", ns::ROSTER) {
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return Err(Error::ParseError("This is not a roster element."));
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}
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for (attr, _) in elem.attrs() {
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if attr != "ver" {
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return Err(Error::ParseError("Unknown attribute in roster element."));
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}
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}
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let mut roster = Roster {
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ver: get_attr!(elem, "ver", optional),
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items: vec!(),
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};
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for child in elem.children() {
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if !child.is("item", ns::ROSTER) {
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return Err(Error::ParseError("Unknown element in roster element."));
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}
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let item = Item::try_from(child.clone())?;
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roster.items.push(item);
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}
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Ok(roster)
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}
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}
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impl Into<Element> for Roster {
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fn into(self) -> Element {
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Element::builder("query")
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.ns(ns::ROSTER)
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.attr("ver", self.ver)
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.append(self.items)
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.build()
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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 super::*;
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#[test]
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fn test_get() {
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let elem: Element = "<query xmlns='jabber:iq:roster'/>".parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert!(roster.ver.is_none());
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assert!(roster.items.is_empty());
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}
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#[test]
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fn test_result() {
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let elem: Element = "<query xmlns='jabber:iq:roster' ver='ver7'><item jid='nurse@example.com'/><item jid='romeo@example.net'/></query>".parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert_eq!(roster.ver, Some(String::from("ver7")));
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assert_eq!(roster.items.len(), 2);
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let elem2: Element = "<query xmlns='jabber:iq:roster' ver='ver7'><item jid='nurse@example.com'/><item jid='romeo@example.net' name=''/></query>".parse().unwrap();
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let roster2 = Roster::try_from(elem2).unwrap();
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assert_eq!(roster.items, roster2.items);
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let elem: Element = "<query xmlns='jabber:iq:roster' ver='ver9'/>".parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert_eq!(roster.ver, Some(String::from("ver9")));
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assert!(roster.items.is_empty());
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let elem: Element = r#"
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<query xmlns='jabber:iq:roster' ver='ver11'>
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<item jid='romeo@example.net'
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name='Romeo'
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subscription='both'>
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<group>Friends</group>
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</item>
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<item jid='mercutio@example.com'
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name='Mercutio'
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subscription='from'/>
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<item jid='benvolio@example.net'
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name='Benvolio'
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subscription='both'/>
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</query>
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"#.parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert_eq!(roster.ver, Some(String::from("ver11")));
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assert_eq!(roster.items.len(), 3);
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assert_eq!(roster.items[0].jid, Jid::from_str("romeo@example.net").unwrap());
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assert_eq!(roster.items[0].name, Some(String::from("Romeo")));
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assert_eq!(roster.items[0].subscription, Some(Subscription::Both));
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assert_eq!(roster.items[0].groups, vec!(String::from("Friends")));
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}
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#[test]
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fn test_set() {
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let elem: Element = "<query xmlns='jabber:iq:roster'><item jid='nurse@example.com'/></query>".parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert!(roster.ver.is_none());
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assert_eq!(roster.items.len(), 1);
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let elem: Element = r#"
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<query xmlns='jabber:iq:roster'>
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<item jid='nurse@example.com'
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name='Nurse'>
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<group>Servants</group>
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</item>
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</query>
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</query>
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"#.parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert!(roster.ver.is_none());
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assert_eq!(roster.items.len(), 1);
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assert_eq!(roster.items[0].jid, Jid::from_str("nurse@example.com").unwrap());
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assert_eq!(roster.items[0].name, Some(String::from("Nurse")));
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assert_eq!(roster.items[0].groups.len(), 1);
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assert_eq!(roster.items[0].groups[0], String::from("Servants"));
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let elem: Element = r#"
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<query xmlns='jabber:iq:roster'>
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<item jid='nurse@example.com'
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subscription='remove'/>
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</query>
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"#.parse().unwrap();
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let roster = Roster::try_from(elem).unwrap();
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assert!(roster.ver.is_none());
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assert_eq!(roster.items.len(), 1);
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assert_eq!(roster.items[0].jid, Jid::from_str("nurse@example.com").unwrap());
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assert!(roster.items[0].name.is_none());
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assert!(roster.items[0].groups.is_empty());
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assert_eq!(roster.items[0].subscription, Some(Subscription::Remove));
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}
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#[test]
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fn test_invalid() {
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let elem: Element = "<query xmlns='jabber:iq:roster'><coucou/></query>".parse().unwrap();
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let error = Roster::try_from(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 element in roster element.");
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let elem: Element = "<query xmlns='jabber:iq:roster' coucou=''/>".parse().unwrap();
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let error = Roster::try_from(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 attribute in roster element.");
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}
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#[test]
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fn test_invalid_item() {
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let elem: Element = "<query xmlns='jabber:iq:roster'><item/></query>".parse().unwrap();
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let error = Roster::try_from(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, "Required attribute 'jid' missing.");
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/*
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let elem: Element = "<query xmlns='jabber:iq:roster'><item jid=''/></query>".parse().unwrap();
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let error = Roster::try_from(elem).unwrap_err();
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let error = match error {
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Error::JidParseError(error) => error,
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_ => panic!(),
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};
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assert_eq!(error.description(), "Invalid JID, I guess?");
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*/
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let elem: Element = "<query xmlns='jabber:iq:roster'><item jid='coucou'><coucou/></item></query>".parse().unwrap();
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let error = Roster::try_from(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 element in roster item element.");
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}
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}
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