95 lines
3.3 KiB
Go
95 lines
3.3 KiB
Go
package connection
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import (
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"crypto/rsa"
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"github.com/s-rah/go-ricochet/channels"
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"github.com/s-rah/go-ricochet/utils"
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"log"
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)
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// AutoConnectionHandler implements the ConnectionHandler interface on behalf of
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// the provided application type by automatically providing support for any
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// built-in channel type whose high level interface is implemented by the
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// application. For example, if the application's type implements the
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// ChatChannelHandler interface, `im.ricochet.chat` will be available to the peer.
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//
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// The application handler can be any other type. To override or augment any of
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// AutoConnectionHandler's behavior (such as adding new channel types, or reacting
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// to connection close events), this type can be embedded in the type that it serves.
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type AutoConnectionHandler struct {
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handlerMap map[string]func() channels.Handler
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connection *Connection
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authResultChannel chan channels.AuthChannelResult
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sach func(hostname string, publicKey rsa.PublicKey) (allowed, known bool)
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}
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// Init ...
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func (ach *AutoConnectionHandler) Init(privateKey *rsa.PrivateKey, serverHostname string) {
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ach.handlerMap = make(map[string]func() channels.Handler)
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ach.RegisterChannelHandler("im.ricochet.auth.hidden-service", func() channels.Handler {
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hsau := new(channels.HiddenServiceAuthChannel)
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hsau.PrivateKey = privateKey
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hsau.Handler = ach
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hsau.ServerHostname = serverHostname
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return hsau
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})
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ach.authResultChannel = make(chan channels.AuthChannelResult)
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}
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// SetServerAuthHandler ...
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func (ach *AutoConnectionHandler) SetServerAuthHandler(sach func(hostname string, publicKey rsa.PublicKey) (allowed, known bool)) {
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ach.sach = sach
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}
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// OnReady ...
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func (ach *AutoConnectionHandler) OnReady(oc *Connection) {
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ach.connection = oc
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}
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// OnClosed is called when the OpenConnection has closed for any reason.
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func (ach *AutoConnectionHandler) OnClosed(err error) {
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}
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// WaitForAuthenticationEvent ...
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func (ach *AutoConnectionHandler) WaitForAuthenticationEvent() channels.AuthChannelResult {
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return <-ach.authResultChannel
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}
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// ClientAuthResult ...
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func (ach *AutoConnectionHandler) ClientAuthResult(accepted bool, isKnownContact bool) {
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log.Printf("Got auth result %v %v", accepted, isKnownContact)
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ach.authResultChannel <- channels.AuthChannelResult{Accepted: accepted, IsKnownContact: isKnownContact}
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}
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// ServerAuthValid ...
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func (ach *AutoConnectionHandler) ServerAuthValid(hostname string, publicKey rsa.PublicKey) (allowed, known bool) {
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// Do something
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accepted, isKnownContact := ach.sach(hostname, publicKey)
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ach.authResultChannel <- channels.AuthChannelResult{Accepted: accepted, IsKnownContact: isKnownContact}
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return accepted, isKnownContact
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}
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// ServerAuthInvalid ...
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func (ach *AutoConnectionHandler) ServerAuthInvalid(err error) {
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ach.authResultChannel <- channels.AuthChannelResult{Accepted: false, IsKnownContact: false}
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}
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// RegisterChannelHandler ...
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func (ach *AutoConnectionHandler) RegisterChannelHandler(ctype string, handler func() channels.Handler) {
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_, exists := ach.handlerMap[ctype]
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if !exists {
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ach.handlerMap[ctype] = handler
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}
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}
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// OnOpenChannelRequest ...
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func (ach *AutoConnectionHandler) OnOpenChannelRequest(ctype string) (channels.Handler, error) {
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handler, ok := ach.handlerMap[ctype]
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if ok {
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h := handler()
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log.Printf("Got Channel Handler")
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return h, nil
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}
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return nil, utils.UnknownChannelTypeError
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}
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