[−][src]Trait enclave_runner::usercalls::UsercallExtension

pub trait UsercallExtension: 'static + Send + Sync + Debug {
    fn connect_stream(
        &self, 
        addr: &str, 
        local_addr: Option<&mut String>, 
        peer_addr: Option<&mut String>
    ) -> IoResult<Option<Box<dyn SyncStream>>> { ... }
    fn bind_stream(
        &self, 
        addr: &str, 
        local_addr: Option<&mut String>
    ) -> IoResult<Option<Box<dyn SyncListener>>> { ... }
}

Provides a mechanism for the enclave code to interface with an external service via a modified runner.

An implementation of UsercallExtension can be registered while building the enclave.

Provided methods

`fn connect_stream( &self, addr: &str, local_addr: Option<&mut String>, peer_addr: Option<&mut String> ) -> IoResult<Option<Box<dyn SyncStream>>>`

Override the connection target for connect calls by the enclave. The runner should determine the service that the enclave is trying to connect to by looking at addr. If connect_stream returns None, the default implementation of connect_stream is used. The enclave may optionally request the local or peer addresses be returned in local_addr or peer_addr, respectively. If local_addr and/or peer_addr are not None, they will point to an empty String. On success, user-space can fill in the strings as appropriate.

The enclave must not make any security decisions based on the local or peer address received.

`fn bind_stream( &self, addr: &str, local_addr: Option<&mut String> ) -> IoResult<Option<Box<dyn SyncListener>>>`

Override the target for bind calls by the enclave. The runner should determine the service that the enclave is trying to bind to by looking at addr. If bind_stream returns None, the default implementation of bind_stream is used. The enclave may optionally request the local address be returned in local_addr. If local_addr is not None, it will point to an empty String. On success, user-space can fill in the string as appropriate.

The enclave must not make any security decisions based on the local address received.

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Implementors