45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
//! Contains wrapper for `<stream:features/>`
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use xmpp_parsers::Element;
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use crate::starttls::NS_XMPP_TLS;
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use crate::client::{NS_XMPP_SASL, NS_XMPP_BIND};
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use crate::error::AuthError;
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/// Wraps `<stream:features/>`, usually the very first nonza of an
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/// XMPPStream.
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///
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/// TODO: should this rather go into xmpp-parsers, kept in a decoded
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/// struct?
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pub struct StreamFeatures(pub Element);
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impl StreamFeatures {
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/// Wrap the nonza
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pub fn new(element: Element) -> Self {
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StreamFeatures(element)
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}
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/// Can initiate TLS session with this server?
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pub fn can_starttls(&self) -> bool {
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self.0
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.get_child("starttls", NS_XMPP_TLS)
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.is_some()
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}
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/// Iterate over SASL mechanisms
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pub fn sasl_mechanisms<'a>(&'a self) -> Result<impl Iterator<Item=String> + 'a, AuthError> {
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Ok(self.0
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.get_child("mechanisms", NS_XMPP_SASL)
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.ok_or(AuthError::NoMechanism)?
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.children()
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.filter(|child| child.is("mechanism", NS_XMPP_SASL))
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.map(|mech_el| mech_el.text())
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)
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}
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/// Does server support user resource binding?
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pub fn can_bind(&self) -> bool {
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self.0
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.get_child("bind", NS_XMPP_BIND)
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.is_some()
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}
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}
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