From 75a9a00e87da7bc4bb6990330ecb6b217d98de82 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Wed, 30 Dec 2015 21:50:46 +0100
Subject: improved response handling at websocket interface


diff --git a/session_store.go b/session_store.go
index 7fe6585..0d149c6 100644
--- a/session_store.go
+++ b/session_store.go
@@ -58,6 +58,19 @@ type getSessionRequest struct {
 	response chan getSessionResponse
 }
 
+type listSessionsResponse struct {
+	sessions     map[string]string
+	responsecode int
+	errorstring  string
+}
+
+type listSessionsRequest struct {
+	user     string
+	password string
+	trusted  bool
+	response chan listSessionsResponse
+}
+
 type removeSessionResponse struct {
 	responsecode int
 	errorstring  string
@@ -80,6 +93,7 @@ type SessionStore struct {
 	done       chan bool
 	newChan    chan newSessionRequest
 	getChan    chan getSessionRequest
+	listChan   chan listSessionsRequest
 	removeChan chan removeSessionRequest
 }
 
@@ -134,6 +148,30 @@ func (self *SessionStore) get(user, id string) (resp getSessionResponse) {
 	return
 }
 
+func (self *SessionStore) list(user, password string, trusted bool) (resp listSessionsResponse) {
+	resp.responsecode = http.StatusOK
+	resp.errorstring = "OK"
+	// TODO: enable this check as soon as the session store handles the rddb itself
+	// if !trusted {
+	// 	if ok, err := self.rddb.CheckPassword(user, password); err != nil {
+	// 		resp.responsecode = http.StatusInternalServerError
+	// 		resp.errorstring = err.Error()
+	// 		return
+	// 	} else if !ok {
+	// 		resp.responsecode = http.StatusUnauthorized
+	// 		resp.errorstring = "invalid username and/or password"
+	// 		return
+	// 	}
+	// }
+	resp.sessions = make(map[string]string)
+	if sessions, exists := self.store[user]; exists {
+		for id, e := range sessions {
+			resp.sessions[id] = e.refId
+		}
+	}
+	return
+}
+
 func (self *SessionStore) remove(user, id string) (resp removeSessionResponse) {
 	resp.responsecode = http.StatusOK
 	resp.errorstring = "OK"
@@ -164,6 +202,8 @@ func (self *SessionStore) dispatchRequests() {
 			req.response <- self.new(req.ctx, req.refId)
 		case req := <-self.getChan:
 			req.response <- self.get(req.user, req.id)
+		case req := <-self.listChan:
+			req.response <- self.list(req.user, req.password, req.trusted)
 		case req := <-self.removeChan:
 			req.response <- self.remove(req.user, req.id)
 		}
@@ -176,6 +216,7 @@ func (self *SessionStore) dispatchRequests() {
 type SessionStoreChan struct {
 	newChan    chan<- newSessionRequest
 	getChan    chan<- getSessionRequest
+	listChan   chan listSessionsRequest
 	removeChan chan<- removeSessionRequest
 }
 
@@ -203,6 +244,19 @@ func (self *SessionStoreChan) Get(user, id string) (*SessionChan, string, int, s
 	return res.session, res.refId, res.responsecode, res.errorstring
 }
 
+func (self *SessionStoreChan) List(user, password string, trusted bool) (map[string]string, int, string) {
+	res_ch := make(chan listSessionsResponse)
+	req := listSessionsRequest{}
+	req.user = user
+	req.password = password
+	req.trusted = trusted
+	req.response = res_ch
+	self.listChan <- req
+
+	res := <-res_ch
+	return res.sessions, res.responsecode, res.errorstring
+}
+
 func (self *SessionStoreChan) Remove(user, id string) (int, string) {
 	res_ch := make(chan removeSessionResponse)
 	req := removeSessionRequest{}
@@ -219,6 +273,7 @@ func (self *SessionStore) GetInterface() *SessionStoreChan {
 	ch := &SessionStoreChan{}
 	ch.newChan = self.newChan
 	ch.getChan = self.getChan
+	ch.listChan = self.listChan
 	ch.removeChan = self.removeChan
 	return ch
 }
@@ -230,6 +285,7 @@ func (self *SessionStore) Cleanup() {
 	close(self.done)
 	close(self.newChan)
 	close(self.getChan)
+	close(self.listChan)
 	close(self.removeChan)
 }
 
@@ -241,6 +297,7 @@ func NewSessionStore(conf *Config) (store *SessionStore, err error) {
 	store.store = make(map[string]map[string]*SessionStoreElement)
 	store.newChan = make(chan newSessionRequest, 10)
 	store.getChan = make(chan getSessionRequest, 10)
+	store.listChan = make(chan listSessionsRequest, 10)
 	store.removeChan = make(chan removeSessionRequest, 10)
 
 	go store.dispatchRequests()
-- 
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