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Protect against empty ids.
This commit is contained in:
parent
c3a19c9128
commit
0261558e07
1 changed files with 26 additions and 8 deletions
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@ -790,6 +790,8 @@ type kickAction struct {
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message string
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message string
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}
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}
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var errEmptyId = group.ProtocolError("empty id")
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func clientLoop(c *webClient, ws *websocket.Conn) error {
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func clientLoop(c *webClient, ws *websocket.Conn) error {
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read := make(chan interface{}, 1)
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read := make(chan interface{}, 1)
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go clientReader(ws, read, c.done)
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go clientReader(ws, read, c.done)
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@ -1038,14 +1040,12 @@ func closeDownConn(c *webClient, id string, message string) error {
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if err != nil && !os.IsNotExist(err) {
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if err != nil && !os.IsNotExist(err) {
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log.Printf("Close down connection: %v", err)
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log.Printf("Close down connection: %v", err)
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}
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}
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if id != "" {
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err = c.write(clientMessage{
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err := c.write(clientMessage{
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Type: "close",
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Type: "close",
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Id: id,
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Id: id,
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})
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})
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if err != nil {
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if err != nil {
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return err
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return err
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}
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}
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}
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if message != "" {
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if message != "" {
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err := c.error(group.UserError(message))
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err := c.error(group.UserError(message))
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@ -1210,6 +1210,9 @@ func handleClientMessage(c *webClient, m clientMessage) error {
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case "request":
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case "request":
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return c.setRequested(m.Request)
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return c.setRequested(m.Request)
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case "offer":
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case "offer":
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if m.Id == "" {
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return errEmptyId
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}
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if !c.permissions.Present {
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if !c.permissions.Present {
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if m.Replace != "" {
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if m.Replace != "" {
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delUpConn(c, m.Replace, c.id, true)
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delUpConn(c, m.Replace, c.id, true)
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@ -1226,6 +1229,9 @@ func handleClientMessage(c *webClient, m clientMessage) error {
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return failUpConnection(c, m.Id, "negotiation failed")
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return failUpConnection(c, m.Id, "negotiation failed")
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}
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}
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case "answer":
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case "answer":
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if m.Id == "" {
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return errEmptyId
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}
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err := gotAnswer(c, m.Id, m.SDP)
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err := gotAnswer(c, m.Id, m.SDP)
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if err != nil {
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if err != nil {
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log.Printf("gotAnswer: %v", err)
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log.Printf("gotAnswer: %v", err)
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@ -1249,6 +1255,9 @@ func handleClientMessage(c *webClient, m clientMessage) error {
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}
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}
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}
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}
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case "renegotiate":
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case "renegotiate":
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if m.Id == "" {
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return errEmptyId
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}
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down := getDownConn(c, m.Id)
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down := getDownConn(c, m.Id)
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if down != nil {
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if down != nil {
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err := negotiate(c, down, true, "")
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err := negotiate(c, down, true, "")
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@ -1261,6 +1270,9 @@ func handleClientMessage(c *webClient, m clientMessage) error {
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log.Printf("Trying to renegotiate unknown connection")
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log.Printf("Trying to renegotiate unknown connection")
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}
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}
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case "close":
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case "close":
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if m.Id == "" {
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return errEmptyId
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}
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err := delUpConn(c, m.Id, c.id, true)
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err := delUpConn(c, m.Id, c.id, true)
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if err != nil {
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if err != nil {
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log.Printf("Deleting up connection %v: %v",
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log.Printf("Deleting up connection %v: %v",
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@ -1268,8 +1280,14 @@ func handleClientMessage(c *webClient, m clientMessage) error {
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return nil
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return nil
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}
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}
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case "abort":
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case "abort":
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if m.Id == "" {
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return errEmptyId
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}
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return closeDownConn(c, m.Id, "")
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return closeDownConn(c, m.Id, "")
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case "ice":
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case "ice":
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if m.Id == "" {
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return errEmptyId
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}
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if m.Candidate == nil {
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if m.Candidate == nil {
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return group.ProtocolError("null candidate")
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return group.ProtocolError("null candidate")
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}
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}
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