502 lines
19 KiB
Rust
502 lines
19 KiB
Rust
extern crate minidom;
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use std::str::FromStr;
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use minidom::Element;
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use error::Error;
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use ns::JINGLE_NS;
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#[derive(Debug, PartialEq)]
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pub enum Action {
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ContentAccept,
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ContentAdd,
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ContentModify,
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ContentReject,
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ContentRemove,
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DescriptionInfo,
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SecurityInfo,
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SessionAccept,
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SessionInfo,
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SessionInitiate,
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SessionTerminate,
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TransportAccept,
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TransportInfo,
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TransportReject,
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TransportReplace,
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}
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impl FromStr for Action {
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type Err = Error;
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fn from_str(s: &str) -> Result<Action, Error> {
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if s == "content-accept" {
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Ok(Action::ContentAccept)
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} else if s == "content-add" {
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Ok(Action::ContentAdd)
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} else if s == "content-modify" {
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Ok(Action::ContentModify)
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} else if s == "content-reject" {
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Ok(Action::ContentReject)
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} else if s == "content-remove" {
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Ok(Action::ContentRemove)
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} else if s == "description-info" {
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Ok(Action::DescriptionInfo)
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} else if s == "security-info" {
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Ok(Action::SecurityInfo)
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} else if s == "session-accept" {
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Ok(Action::SessionAccept)
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} else if s == "session-info" {
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Ok(Action::SessionInfo)
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} else if s == "session-initiate" {
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Ok(Action::SessionInitiate)
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} else if s == "session-terminate" {
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Ok(Action::SessionTerminate)
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} else if s == "transport-accept" {
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Ok(Action::TransportAccept)
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} else if s == "transport-info" {
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Ok(Action::TransportInfo)
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} else if s == "transport-reject" {
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Ok(Action::TransportReject)
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} else if s == "transport-replace" {
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Ok(Action::TransportReplace)
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} else {
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Err(Error::ParseError("Unknown action."))
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}
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}
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}
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// TODO: use a real JID type.
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type Jid = String;
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#[derive(Debug, PartialEq)]
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pub enum Creator {
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Initiator,
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Responder,
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}
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impl FromStr for Creator {
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type Err = Error;
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fn from_str(s: &str) -> Result<Creator, Error> {
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if s == "initiator" {
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Ok(Creator::Initiator)
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} else if s == "responder" {
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Ok(Creator::Responder)
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} else {
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Err(Error::ParseError("Unknown creator."))
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}
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}
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}
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#[derive(Debug, PartialEq)]
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pub enum Senders {
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Both,
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Initiator,
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None_,
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Responder,
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}
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impl FromStr for Senders {
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type Err = Error;
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fn from_str(s: &str) -> Result<Senders, Error> {
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if s == "both" {
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Ok(Senders::Both)
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} else if s == "initiator" {
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Ok(Senders::Initiator)
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} else if s == "none" {
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Ok(Senders::None_)
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} else if s == "responder" {
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Ok(Senders::Responder)
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} else {
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Err(Error::ParseError("Unknown senders."))
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}
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}
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}
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#[derive(Debug)]
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pub struct Content {
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pub creator: Creator,
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pub disposition: String,
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pub name: String,
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pub senders: Senders,
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pub description: String,
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pub transport: String,
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pub security: Option<String>,
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}
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#[derive(Debug, PartialEq)]
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pub enum Reason {
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AlternativeSession, //(String),
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Busy,
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Cancel,
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ConnectivityError,
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Decline,
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Expired,
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FailedApplication,
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FailedTransport,
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GeneralError,
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Gone,
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IncompatibleParameters,
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MediaError,
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SecurityError,
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Success,
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Timeout,
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UnsupportedApplications,
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UnsupportedTransports,
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}
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impl FromStr for Reason {
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type Err = Error;
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fn from_str(s: &str) -> Result<Reason, Error> {
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if s == "alternative-session" {
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Ok(Reason::AlternativeSession)
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} else if s == "busy" {
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Ok(Reason::Busy)
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} else if s == "cancel" {
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Ok(Reason::Cancel)
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} else if s == "connectivity-error" {
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Ok(Reason::ConnectivityError)
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} else if s == "decline" {
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Ok(Reason::Decline)
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} else if s == "expired" {
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Ok(Reason::Expired)
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} else if s == "failed-application" {
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Ok(Reason::FailedApplication)
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} else if s == "failed-transport" {
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Ok(Reason::FailedTransport)
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} else if s == "general-error" {
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Ok(Reason::GeneralError)
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} else if s == "gone" {
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Ok(Reason::Gone)
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} else if s == "incompatible-parameters" {
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Ok(Reason::IncompatibleParameters)
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} else if s == "media-error" {
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Ok(Reason::MediaError)
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} else if s == "security-error" {
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Ok(Reason::SecurityError)
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} else if s == "success" {
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Ok(Reason::Success)
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} else if s == "timeout" {
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Ok(Reason::Timeout)
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} else if s == "unsupported-applications" {
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Ok(Reason::UnsupportedApplications)
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} else if s == "unsupported-transports" {
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Ok(Reason::UnsupportedTransports)
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} else {
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Err(Error::ParseError("Unknown reason."))
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}
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}
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}
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#[derive(Debug)]
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pub struct ReasonElement {
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pub reason: Reason,
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pub text: Option<String>,
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}
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#[derive(Debug)]
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pub struct Jingle {
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pub action: Action,
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pub initiator: Option<Jid>,
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pub responder: Option<Jid>,
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pub sid: String,
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pub contents: Vec<Content>,
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pub reason: Option<ReasonElement>,
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//pub other: Vec<Element>,
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}
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pub fn parse_jingle(root: &Element) -> Result<Jingle, Error> {
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assert!(root.is("jingle", JINGLE_NS));
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let mut contents: Vec<Content> = vec!();
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let action = root.attr("action")
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.ok_or(Error::ParseError("Jingle must have an 'action' attribute."))?
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.parse()?;
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let initiator = root.attr("initiator")
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.and_then(|initiator| initiator.parse().ok());
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let responder = root.attr("responder")
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.and_then(|responder| responder.parse().ok());
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let sid = root.attr("sid")
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.ok_or(Error::ParseError("Jingle must have a 'sid' attribute."))?;
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let mut reason_element = None;
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for child in root.children() {
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if child.is("content", JINGLE_NS) {
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let creator = child.attr("creator")
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.ok_or(Error::ParseError("Content must have a 'creator' attribute."))?
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.parse()?;
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let disposition = child.attr("disposition")
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.unwrap_or("session");
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let name = child.attr("name")
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.ok_or(Error::ParseError("Content must have a 'name' attribute."))?;
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let senders = child.attr("senders")
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.unwrap_or("both")
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.parse()?;
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let mut description = None;
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let mut transport = None;
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let mut security = None;
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for stuff in child.children() {
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if stuff.name() == "description" {
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if description.is_some() {
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return Err(Error::ParseError("Content must not have more than one description."));
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}
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description = Some(stuff.ns().ok_or(Error::ParseError("Description without a namespace."))?);
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} else if stuff.name() == "transport" {
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if transport.is_some() {
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return Err(Error::ParseError("Content must not have more than one transport."));
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}
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transport = Some(stuff.ns().ok_or(Error::ParseError("Transport without a namespace."))?);
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} else if stuff.name() == "security" {
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if security.is_some() {
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return Err(Error::ParseError("Content must not have more than one security."));
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}
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security = stuff.ns().and_then(|ns| ns.parse().ok());
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}
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}
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if description.is_none() {
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return Err(Error::ParseError("Content must have one description."));
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}
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if transport.is_none() {
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return Err(Error::ParseError("Content must have one transport."));
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}
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let description = description.unwrap().to_owned();
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let transport = transport.unwrap().to_owned();
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contents.push(Content {
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creator: creator,
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disposition: disposition.to_owned(),
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name: name.to_owned(),
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senders: senders,
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description: description,
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transport: transport,
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security: security.to_owned(),
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});
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} else if child.is("reason", JINGLE_NS) {
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if reason_element.is_some() {
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return Err(Error::ParseError("Jingle must not have more than one reason."));
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}
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let mut reason = None;
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let mut text = None;
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for stuff in child.children() {
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if stuff.ns() != Some(JINGLE_NS) {
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return Err(Error::ParseError("Reason contains a foreign element."));
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}
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let name = stuff.name();
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if name == "text" {
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if text.is_some() {
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return Err(Error::ParseError("Reason must not have more than one text."));
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}
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text = Some(stuff.text());
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} else {
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reason = Some(name.parse()?);
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}
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}
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if reason.is_none() {
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return Err(Error::ParseError("Reason doesn’t contain a valid reason."));
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}
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reason_element = Some(ReasonElement {
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reason: reason.unwrap(),
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text: text,
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});
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} else {
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return Err(Error::ParseError("Unknown element in jingle."));
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}
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}
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return Ok(Jingle {
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action: action,
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initiator: initiator,
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responder: responder,
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sid: sid.to_owned(),
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contents: contents,
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reason: reason_element,
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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 jingle;
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#[test]
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fn test_simple() {
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'/>".parse().unwrap();
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let jingle = jingle::parse_jingle(&elem).unwrap();
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assert_eq!(jingle.action, jingle::Action::SessionInitiate);
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assert_eq!(jingle.sid, "coucou");
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}
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#[test]
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fn test_invalid_jingle() {
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1'/>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Jingle must have an 'action' attribute.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-info'/>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Jingle must have a 'sid' attribute.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='coucou' sid='coucou'/>".parse().unwrap();
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let error = jingle::parse_jingle(&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 action.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-accept' sid='coucou'><coucou/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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 jingle.");
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}
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#[test]
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fn test_content() {
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou'><description/><transport/></content></jingle>".parse().unwrap();
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let jingle = jingle::parse_jingle(&elem).unwrap();
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assert_eq!(jingle.contents[0].creator, jingle::Creator::Initiator);
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assert_eq!(jingle.contents[0].name, "coucou");
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assert_eq!(jingle.contents[0].senders, jingle::Senders::Both);
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assert_eq!(jingle.contents[0].disposition, "session");
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println!("{:#?}", jingle);
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou' senders='both'><description/><transport/></content></jingle>".parse().unwrap();
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let jingle = jingle::parse_jingle(&elem).unwrap();
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assert_eq!(jingle.contents[0].senders, jingle::Senders::Both);
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou' disposition='early-session'><description/><transport/></content></jingle>".parse().unwrap();
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let jingle = jingle::parse_jingle(&elem).unwrap();
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assert_eq!(jingle.contents[0].disposition, "early-session");
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}
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#[test]
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fn test_invalid_content() {
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Content must have a 'creator' attribute.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator'/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Content must have a 'name' attribute.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='coucou' name='coucou'/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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 creator.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou' senders='coucou'/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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 senders.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou' senders=''/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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 senders.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou'/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Content must have one description.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><content creator='initiator' name='coucou'><description/></content></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Content must have one transport.");
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}
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#[test]
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fn test_reason() {
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason><success/></reason></jingle>".parse().unwrap();
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let jingle = jingle::parse_jingle(&elem).unwrap();
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let reason = jingle.reason.unwrap();
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assert_eq!(reason.reason, jingle::Reason::Success);
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assert_eq!(reason.text, None);
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason><success/><text>coucou</text></reason></jingle>".parse().unwrap();
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let jingle = jingle::parse_jingle(&elem).unwrap();
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let reason = jingle.reason.unwrap();
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assert_eq!(reason.reason, jingle::Reason::Success);
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assert_eq!(reason.text, Some(String::from("coucou")));
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}
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#[test]
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fn test_invalid_reason() {
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason/></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Reason doesn’t contain a valid reason.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason><a/></reason></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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 reason.");
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let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason><a xmlns='http://www.w3.org/1999/xhtml'/></reason></jingle>".parse().unwrap();
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let error = jingle::parse_jingle(&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, "Reason contains a foreign element.");
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|
||
let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason><decline/></reason><reason/></jingle>".parse().unwrap();
|
||
let error = jingle::parse_jingle(&elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Jingle must not have more than one reason.");
|
||
|
||
let elem: Element = "<jingle xmlns='urn:xmpp:jingle:1' action='session-initiate' sid='coucou'><reason><decline/><text/><text/></reason></jingle>".parse().unwrap();
|
||
let error = jingle::parse_jingle(&elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Reason must not have more than one text.");
|
||
}
|
||
}
|