Make client selection a dropdown

Also implemented adding and deleting clients through the API.

api.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"net/url"
 	"strconv"
+	"strings"
 )
 
 type Api struct {
@@ -26,6 +27,7 @@ func NewApi(config *BoringProxyConfig, db *Database, auth *Auth, tunMan *TunnelM
 	api := &Api{config, db, auth, tunMan, mux}
 
 	mux.Handle("/tunnels", http.StripPrefix("/tunnels", http.HandlerFunc(api.handleTunnels)))
+	mux.Handle("/users/", http.StripPrefix("/users", http.HandlerFunc(api.handleUsers)))
 
 	return api
 }
@@ -302,6 +304,84 @@ func (a *Api) DeleteSshKey(tokenData TokenData, params url.Values) error {
 	return nil
 }
 
+func (a *Api) handleUsers(w http.ResponseWriter, r *http.Request) {
+	token, err := extractToken("access_token", r)
+	if err != nil {
+		w.WriteHeader(401)
+		io.WriteString(w, "Invalid token")
+		return
+	}
+
+	tokenData, exists := a.db.GetTokenData(token)
+	if !exists {
+		w.WriteHeader(401)
+		io.WriteString(w, "Failed to get token")
+		return
+	}
+
+	path := r.URL.Path
+	parts := strings.Split(path[1:], "/")
+
+	r.ParseForm()
+
+	if len(parts) == 3 && parts[1] == "clients" {
+		ownerId := parts[0]
+		clientId := parts[2]
+		if r.Method == "PUT" {
+			err := a.SetClient(tokenData, r.Form, ownerId, clientId)
+			if err != nil {
+				w.WriteHeader(500)
+				io.WriteString(w, err.Error())
+				return
+			}
+		} else if r.Method == "DELETE" {
+			err := a.DeleteClient(tokenData, ownerId, clientId)
+			if err != nil {
+				w.WriteHeader(500)
+				io.WriteString(w, err.Error())
+				return
+			}
+		}
+	} else {
+		w.WriteHeader(400)
+		io.WriteString(w, "Invalid /users/<username>/clients request")
+		return
+	}
+}
+
+func (a *Api) SetClient(tokenData TokenData, params url.Values, ownerId, clientId string) error {
+
+	if tokenData.Owner != ownerId {
+		user, _ := a.db.GetUser(tokenData.Owner)
+		if !user.IsAdmin {
+			return errors.New("Unauthorized")
+		}
+	}
+
+	// TODO: what if two users try to get then set at the same time?
+	owner, _ := a.db.GetUser(ownerId)
+	owner.Clients[clientId] = Client{}
+	a.db.SetUser(ownerId, owner)
+
+	return nil
+}
+
+func (a *Api) DeleteClient(tokenData TokenData, ownerId, clientId string) error {
+
+	if tokenData.Owner != ownerId {
+		user, _ := a.db.GetUser(tokenData.Owner)
+		if !user.IsAdmin {
+			return errors.New("Unauthorized")
+		}
+	}
+
+	owner, _ := a.db.GetUser(ownerId)
+	delete(owner.Clients, clientId)
+	a.db.SetUser(ownerId, owner)
+
+	return nil
+}
+
 func (a *Api) validateToken(h http.Handler) http.Handler {
 
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

client.go

@@ -24,6 +24,7 @@ type BoringProxyClient struct {
 	server           string
 	token            string
 	clientName       string
+	user             string
 	cancelFuncs      map[string]context.CancelFunc
 	cancelFuncsMutex *sync.Mutex
 }
@@ -33,6 +34,7 @@ func NewBoringProxyClient() *BoringProxyClient {
 	server := flagSet.String("server", "", "boringproxy server")
 	token := flagSet.String("token", "", "Access token")
 	name := flagSet.String("client-name", "", "Client name")
+	user := flagSet.String("user", "admin", "user")
 	flagSet.Parse(os.Args[2:])
 
 	httpClient := &http.Client{}
@@ -47,6 +49,7 @@ func NewBoringProxyClient() *BoringProxyClient {
 		server:           *server,
 		token:            *token,
 		clientName:       *name,
+		user:             *user,
 		cancelFuncs:      cancelFuncs,
 		cancelFuncsMutex: cancelFuncsMutex,
 	}
@@ -54,6 +57,24 @@ func NewBoringProxyClient() *BoringProxyClient {
 
 func (c *BoringProxyClient) RunPuppetClient() {
 
+	url := fmt.Sprintf("https://%s/api/users/%s/clients/%s", c.server, c.user, c.clientName)
+	clientReq, err := http.NewRequest("PUT", url, nil)
+	if err != nil {
+		log.Fatal("Failed to PUT client")
+	}
+	if len(c.token) > 0 {
+		clientReq.Header.Add("Authorization", "bearer "+c.token)
+	}
+	resp, err := c.httpClient.Do(clientReq)
+	if err != nil {
+		log.Fatal("Failed to PUT client")
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		log.Fatal("Failed to PUT client")
+	}
+
 	for {
 		err := c.PollTunnels()
 		if err != nil {

database.go

@@ -22,6 +22,7 @@ type TokenData struct {
 
 type User struct {
 	IsAdmin bool              `json:"is_admin"`
+	Clients map[string]Client `json:"clients"`
 }
 
 type SshKey struct {
@@ -29,6 +30,9 @@ type SshKey struct {
 	Key   string `json:"key"`
 }
 
+type Client struct {
+}
+
 type Tunnel struct {
 	Owner            string `json:"owner"`
 	Domain           string `json:"domain"`
@@ -222,6 +226,16 @@ func (d *Database) GetUser(username string) (User, bool) {
 	return user, true
 }
 
+func (d *Database) SetUser(username string, user User) error {
+	d.mutex.Lock()
+	defer d.mutex.Unlock()
+
+	d.Users[username] = user
+	d.persist()
+
+	return nil
+}
+
 func (d *Database) AddUser(username string, isAdmin bool) error {
 	d.mutex.Lock()
 	defer d.mutex.Unlock()
@@ -233,7 +247,8 @@ func (d *Database) AddUser(username string, isAdmin bool) error {
 	}
 
 	d.Users[username] = User{
-		isAdmin,
+		IsAdmin: isAdmin,
+		Clients: make(map[string]Client),
 	}
 
 	d.persist()

todo.md

@@ -18,3 +18,6 @@
   to manually combine them for custom keys.
 * Send public key back to clients, so they can automatically try to find the
   matching private key.
+* We might need some sort of a transaction or atomicity system on the db to
+  prevent things like 2 people setting the user at the same time and one losing
+  their changes.

ui_handler.go

@@ -36,6 +36,7 @@ type IndexData struct {
 	Tokens  map[string]TokenData
 	SshKeys map[string]SshKey
 	Users   map[string]User
+	UserId  string
 	IsAdmin bool
 	QrCodes map[string]template.URL
 }
@@ -263,6 +264,7 @@ func (h *WebUiHandler) handleWebUiRequest(w http.ResponseWriter, r *http.Request
 			Tokens:  tokens,
 			SshKeys: h.api.GetSshKeys(tokenData),
 			Users:   users,
+			UserId:  tokenData.Owner,
 			IsAdmin: user.IsAdmin,
 			QrCodes: qrCodes,
 		}

webui/index.tmpl

@@ -80,7 +80,12 @@
 
                <div class='input'>
                  <label for="client-name">Client Name:</label>
-                 <input type="text" id="client-name" name="client-name">
+                 <select id="client-name" name="client-name">
+                   <option value="any">Any</option>
+                   {{range $id, $client := (index $.Users $.UserId).Clients}}
+                   <option value="{{$id}}">{{$id}}</option>
+                   {{end}}
+                 </select>
                </div>
                <div class='input'>
                  <label for="client-addr">Client Address:</label>