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package eduvpn
import (
"errors"
)
type VPNState struct {
// Info passed by the client
ConfigDirectory string `json:"-"`
Name string `json:"-"`
StateCallback func(string, string, string) `json:"-"`
// The chosen server
Server *Server `json:"server"`
// The list of servers and organizations from disco
DiscoList *DiscoList `json:"disco"`
// The file we keep open for logging
LogFile *FileLogger `json:"-"`
FSM *FSM `json:"-"`
}
func (state *VPNState) Register(name string, directory string, stateCallback func(string, string, string)) error {
if state.FSM == nil {
state.InitializeFSM()
}
if !state.HasTransition(APP_REGISTERED) {
return errors.New("app already registered")
}
state.Name = name
state.ConfigDirectory = directory
state.StateCallback = stateCallback
// Initialize the logger
// state.InitLog(LOG_WARNING)
// state.Log(LOG_INFO, "App registered")
// Try to load the previous configuration
if state.LoadConfig() != nil {
// This error can be safely ignored, as when the config does not load, the struct will not be filled
// state.Log(LOG_INFO, "Previous configuration not found")
}
state.GoTransition(APP_REGISTERED, "HALLO")
return nil
}
func (state *VPNState) Deregister() error {
if !state.HasTransition(APP_DEREGISTERED) {
return errors.New("app cannot deregister")
}
// Close the log file
state.CloseLog()
// Re-initialize everything
state = &VPNState{}
state.GoTransition(APP_DEREGISTERED, "")
return nil
}
func (state *VPNState) Connect(url string) (string, error) {
if state.Server == nil {
state.Server = &Server{}
}
initializeErr := state.Server.Initialize(url)
if initializeErr != nil {
return "", initializeErr
}
if !state.Server.IsAuthenticated() {
loginErr := state.LoginOAuth()
if loginErr != nil {
return "", loginErr
}
}
config, configErr := state.Server.GetConfig()
if configErr != nil {
return "", configErr
}
if !state.HasTransition(SERVER_CONNECTED) {
return "", errors.New("cannot connect to server, invalid state")
}
return config, nil
}
var VPNStateInstance *VPNState
func GetVPNState() *VPNState {
if VPNStateInstance == nil {
VPNStateInstance = &VPNState{}
}
return VPNStateInstance
}
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