1// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
2//
3// This Source Code Form is subject to the terms of the Mozilla Public
4// License, v. 2.0. If a copy of the MPL was not distributed with this
5// file, You can obtain one at http://mozilla.org/MPL/2.0/.
6
7use minidom::Element;
8use jid::Jid;
9
10use error::Error;
11
12use ns;
13
14#[derive(Debug, Clone)]
15pub enum StanzaId {
16 StanzaId {
17 id: String,
18 by: Jid,
19 },
20 OriginId {
21 id: String,
22 },
23}
24
25pub fn parse_stanza_id(root: &Element) -> Result<StanzaId, Error> {
26 let is_stanza_id = root.is("stanza-id", ns::SID);
27 if !is_stanza_id && !root.is("origin-id", ns::SID) {
28 return Err(Error::ParseError("This is not a stanza-id or origin-id element."));
29 }
30 for _ in root.children() {
31 return Err(Error::ParseError("Unknown child in stanza-id or origin-id element."));
32 }
33 let id = match root.attr("id") {
34 Some(id) => id.to_owned(),
35 None => return Err(Error::ParseError("No 'id' attribute present in stanza-id or origin-id.")),
36 };
37 Ok(if is_stanza_id {
38 let by = match root.attr("by") {
39 Some(by) => by.parse().unwrap(),
40 None => return Err(Error::ParseError("No 'by' attribute present in stanza-id.")),
41 };
42 StanzaId::StanzaId { id, by }
43 } else {
44 StanzaId::OriginId { id }
45 })
46}
47
48pub fn serialise(stanza_id: &StanzaId) -> Element {
49 match *stanza_id {
50 StanzaId::StanzaId { ref id, ref by } => {
51 Element::builder("stanza-id")
52 .ns(ns::SID)
53 .attr("id", id.clone())
54 .attr("by", String::from(by.clone()))
55 .build()
56 },
57 StanzaId::OriginId { ref id } => {
58 Element::builder("origin-id")
59 .ns(ns::SID)
60 .attr("id", id.clone())
61 .build()
62 },
63 }
64}
65
66#[cfg(test)]
67mod tests {
68 use std::str::FromStr;
69
70 use minidom::Element;
71 use jid::Jid;
72 use error::Error;
73 use stanza_id;
74
75 #[test]
76 fn test_simple() {
77 let elem: Element = "<stanza-id xmlns='urn:xmpp:sid:0' id='coucou' by='coucou@coucou'/>".parse().unwrap();
78 let stanza_id = stanza_id::parse_stanza_id(&elem).unwrap();
79 if let stanza_id::StanzaId::StanzaId { id, by } = stanza_id {
80 assert_eq!(id, String::from("coucou"));
81 assert_eq!(by, Jid::from_str("coucou@coucou").unwrap());
82 } else {
83 panic!();
84 }
85
86 let elem: Element = "<origin-id xmlns='urn:xmpp:sid:0' id='coucou'/>".parse().unwrap();
87 let stanza_id = stanza_id::parse_stanza_id(&elem).unwrap();
88 if let stanza_id::StanzaId::OriginId { id } = stanza_id {
89 assert_eq!(id, String::from("coucou"));
90 } else {
91 panic!();
92 }
93 }
94
95 #[test]
96 fn test_invalid_child() {
97 let elem: Element = "<stanza-id xmlns='urn:xmpp:sid:0'><coucou/></stanza-id>".parse().unwrap();
98 let error = stanza_id::parse_stanza_id(&elem).unwrap_err();
99 let message = match error {
100 Error::ParseError(string) => string,
101 _ => panic!(),
102 };
103 assert_eq!(message, "Unknown child in stanza-id or origin-id element.");
104 }
105
106 #[test]
107 fn test_invalid_id() {
108 let elem: Element = "<stanza-id xmlns='urn:xmpp:sid:0'/>".parse().unwrap();
109 let error = stanza_id::parse_stanza_id(&elem).unwrap_err();
110 let message = match error {
111 Error::ParseError(string) => string,
112 _ => panic!(),
113 };
114 assert_eq!(message, "No 'id' attribute present in stanza-id or origin-id.");
115 }
116
117 #[test]
118 fn test_invalid_by() {
119 let elem: Element = "<stanza-id xmlns='urn:xmpp:sid:0' id='coucou'/>".parse().unwrap();
120 let error = stanza_id::parse_stanza_id(&elem).unwrap_err();
121 let message = match error {
122 Error::ParseError(string) => string,
123 _ => panic!(),
124 };
125 assert_eq!(message, "No 'by' attribute present in stanza-id.");
126 }
127
128 #[test]
129 fn test_serialise() {
130 let elem: Element = "<stanza-id xmlns='urn:xmpp:sid:0' id='coucou' by='coucou@coucou'/>".parse().unwrap();
131 let stanza_id = stanza_id::StanzaId::StanzaId { id: String::from("coucou"), by: Jid::from_str("coucou@coucou").unwrap() };
132 let elem2 = stanza_id::serialise(&stanza_id);
133 assert_eq!(elem, elem2);
134 }
135}