add remove server from networks with api. Add to default network by default.

controllers/serverHttpController.go

@@ -0,0 +1,90 @@
+package controller
+
+import (
+    "github.com/gravitl/netmaker/models"
+    "github.com/gravitl/netmaker/serverctl"
+    "github.com/gravitl/netmaker/config"
+    "encoding/json"
+    "strings"
+    "net/http"
+    "github.com/gorilla/mux"
+)
+
+func serverHandlers(r *mux.Router) {
+    r.HandleFunc("/api/server/addnetwork/{network}", securityCheckServer(http.HandlerFunc(addNetwork))).Methods("POST")
+    r.HandleFunc("/api/server/removenetwork/{network}", securityCheckServer(http.HandlerFunc(removeNetwork))).Methods("DELETE")
+}
+
+//Security check is middleware for every function and just checks to make sure that its the master calling
+//Only admin should have access to all these group-level actions
+//or maybe some Users once implemented
+func securityCheckServer(next http.Handler) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var errorResponse = models.ErrorResponse{
+			Code: http.StatusInternalServerError, Message: "W1R3: It's not you it's me.",
+		}
+
+		bearerToken := r.Header.Get("Authorization")
+
+		var hasBearer = true
+		var tokenSplit = strings.Split(bearerToken, " ")
+		var  authToken = ""
+
+		if len(tokenSplit) < 2 {
+			hasBearer = false
+		} else {
+			authToken = tokenSplit[1]
+		}
+		//all endpoints here require master so not as complicated
+		//still might not be a good  way of doing this
+		if !hasBearer || !authenticateMasterServer(authToken) {
+			errorResponse = models.ErrorResponse{
+				Code: http.StatusUnauthorized, Message: "W1R3: You are unauthorized to access this endpoint.",
+			}
+			returnErrorResponse(w, r, errorResponse)
+		} else {
+			next.ServeHTTP(w, r)
+		}
+	}
+}
+//Consider a more secure way of setting master key
+func authenticateMasterServer(tokenString string) bool {
+    if tokenString == config.Config.Server.MasterKey {
+        return true
+    }
+    return false
+}
+
+func removeNetwork(w http.ResponseWriter, r *http.Request) {
+        // Set header
+        w.Header().Set("Content-Type", "application/json")
+
+        // get params
+        var params = mux.Vars(r)
+
+        success, err := serverctl.RemoveNetwork(params["network"])
+
+        if err != nil || !success {
+                json.NewEncoder(w).Encode("Could not remove server from network " + params["network"])
+                return
+        }
+
+        json.NewEncoder(w).Encode("Server removed from network " + params["network"])
+}
+
+func addNetwork(w http.ResponseWriter, r *http.Request) {
+        // Set header
+        w.Header().Set("Content-Type", "application/json")
+
+        // get params
+        var params = mux.Vars(r)
+
+        success, err := serverctl.AddNetwork(params["network"])
+
+        if err != nil || !success {
+                json.NewEncoder(w).Encode("Could not add server to network " + params["network"])
+                return
+        }
+
+        json.NewEncoder(w).Encode("Server added to network " + params["network"])
+}