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author | Wim <wim@42.be> | 2019-03-02 13:04:28 +0100 |
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committer | GitHub <noreply@github.com> | 2019-03-02 13:04:28 +0100 |
commit | df3fdc26a01a20c3568b824f4f15f9b56a2f3db3 (patch) | |
tree | 053e3caf197063f94af386e60c67e4bef69a7863 /vendor/github.com/Rhymen/go-whatsapp/conn.go | |
parent | af00c34aaccb3521b8dbf0bd8876a5b38d5d42f4 (diff) | |
download | matterbridge-msglm-df3fdc26a01a20c3568b824f4f15f9b56a2f3db3.tar.gz matterbridge-msglm-df3fdc26a01a20c3568b824f4f15f9b56a2f3db3.tar.bz2 matterbridge-msglm-df3fdc26a01a20c3568b824f4f15f9b56a2f3db3.zip |
Use whatsapp forks (#750)
Diffstat (limited to 'vendor/github.com/Rhymen/go-whatsapp/conn.go')
-rw-r--r-- | vendor/github.com/Rhymen/go-whatsapp/conn.go | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/vendor/github.com/Rhymen/go-whatsapp/conn.go b/vendor/github.com/Rhymen/go-whatsapp/conn.go deleted file mode 100644 index d53d92c2..00000000 --- a/vendor/github.com/Rhymen/go-whatsapp/conn.go +++ /dev/null @@ -1,389 +0,0 @@ -//Package whatsapp provides a developer API to interact with the WhatsAppWeb-Servers. -package whatsapp - -import ( - "crypto/hmac" - "crypto/sha256" - "encoding/json" - "fmt" - "math/rand" - "net/http" - "os" - "strconv" - "strings" - "sync" - "time" - - "github.com/Rhymen/go-whatsapp/binary" - "github.com/Rhymen/go-whatsapp/crypto/cbc" - "github.com/gorilla/websocket" -) - -type metric byte - -const ( - debugLog metric = iota + 1 - queryResume - queryReceipt - queryMedia - queryChat - queryContacts - queryMessages - presence - presenceSubscribe - group - read - chat - received - pic - status - message - queryActions - block - queryGroup - queryPreview - queryEmoji - queryMessageInfo - spam - querySearch - queryIdentity - queryUrl - profile - contact - queryVcard - queryStatus - queryStatusUpdate - privacyStatus - queryLiveLocations - liveLocation - queryVname - queryLabels - call - queryCall - queryQuickReplies -) - -type flag byte - -const ( - ignore flag = 1 << (7 - iota) - ackRequest - available - notAvailable - expires - skipOffline -) - -/* -Conn is created by NewConn. Interacting with the initialized Conn is the main way of interacting with our package. -It holds all necessary information to make the package work internally. -*/ -type Conn struct { - wsConn *websocket.Conn - wsConnOK bool - wsConnMutex sync.RWMutex - session *Session - listener map[string]chan string - listenerMutex sync.RWMutex - writeChan chan wsMsg - handler []Handler - msgCount int - msgTimeout time.Duration - Info *Info - Store *Store - ServerLastSeen time.Time - - longClientName string - shortClientName string -} - -type wsMsg struct { - messageType int - data []byte -} - -/* -Creates a new connection with a given timeout. The websocket connection to the WhatsAppWeb servers get´s established. -The goroutine for handling incoming messages is started -*/ -func NewConn(timeout time.Duration) (*Conn, error) { - wac := &Conn{ - wsConn: nil, // will be set in connect() - wsConnMutex: sync.RWMutex{}, - listener: make(map[string]chan string), - listenerMutex: sync.RWMutex{}, - writeChan: make(chan wsMsg), - handler: make([]Handler, 0), - msgCount: 0, - msgTimeout: timeout, - Store: newStore(), - - longClientName: "github.com/rhymen/go-whatsapp", - shortClientName: "go-whatsapp", - } - - if err := wac.connect(); err != nil { - return nil, err - } - - go wac.readPump() - go wac.writePump() - go wac.keepAlive(20000, 90000) - - return wac, nil -} - -func (wac *Conn) isConnected() bool { - wac.wsConnMutex.RLock() - defer wac.wsConnMutex.RUnlock() - if wac.wsConn == nil { - return false - } - if wac.wsConnOK { - return true - } - - // just send a keepalive to test the connection - wac.sendKeepAlive() - - // this method is expected to be called by loops. So we can just return false - return false -} - -// connect should be guarded with wsConnMutex -func (wac *Conn) connect() error { - dialer := &websocket.Dialer{ - ReadBufferSize: 25 * 1024 * 1024, - WriteBufferSize: 10 * 1024 * 1024, - HandshakeTimeout: wac.msgTimeout, - } - - headers := http.Header{"Origin": []string{"https://web.whatsapp.com"}} - wsConn, _, err := dialer.Dial("wss://web.whatsapp.com/ws", headers) - if err != nil { - return fmt.Errorf("couldn't dial whatsapp web websocket: %v", err) - } - - wsConn.SetCloseHandler(func(code int, text string) error { - fmt.Fprintf(os.Stderr, "websocket connection closed(%d, %s)\n", code, text) - - // from default CloseHandler - message := websocket.FormatCloseMessage(code, "") - wsConn.WriteControl(websocket.CloseMessage, message, time.Now().Add(time.Second)) - - // our close handling - if websocket.IsUnexpectedCloseError(err, websocket.CloseNormalClosure, websocket.CloseGoingAway) { - fmt.Println("Trigger reconnect") - go wac.reconnect() - } - return nil - }) - - wac.wsConn = wsConn - wac.wsConnOK = true - return nil -} - -// reconnect should be run as go routine -func (wac *Conn) reconnect() { - wac.wsConnMutex.Lock() - wac.wsConn.Close() - wac.wsConn = nil - wac.wsConnOK = false - wac.wsConnMutex.Unlock() - - // wait up to 60 seconds and then reconnect. As writePump should send immediately, it might - // reconnect as well. So we check its existance before reconnecting - for !wac.isConnected() { - time.Sleep(time.Duration(rand.Intn(60)) * time.Second) - - wac.wsConnMutex.Lock() - if wac.wsConn == nil { - if err := wac.connect(); err != nil { - fmt.Fprintf(os.Stderr, "could not reconnect to websocket: %v\n", err) - } - } - wac.wsConnMutex.Unlock() - } -} - -func (wac *Conn) write(data []interface{}) (<-chan string, error) { - d, err := json.Marshal(data) - if err != nil { - return nil, err - } - - ts := time.Now().Unix() - messageTag := fmt.Sprintf("%d.--%d", ts, wac.msgCount) - msg := fmt.Sprintf("%s,%s", messageTag, d) - - ch := make(chan string, 1) - - wac.listenerMutex.Lock() - wac.listener[messageTag] = ch - wac.listenerMutex.Unlock() - - wac.writeChan <- wsMsg{websocket.TextMessage, []byte(msg)} - - wac.msgCount++ - return ch, nil -} - -func (wac *Conn) writeBinary(node binary.Node, metric metric, flag flag, tag string) (<-chan string, error) { - if len(tag) < 2 { - return nil, fmt.Errorf("no tag specified or to short") - } - b, err := binary.Marshal(node) - if err != nil { - return nil, err - } - - cipher, err := cbc.Encrypt(wac.session.EncKey, nil, b) - if err != nil { - return nil, err - } - - h := hmac.New(sha256.New, wac.session.MacKey) - h.Write(cipher) - hash := h.Sum(nil) - - data := []byte(tag + ",") - data = append(data, byte(metric), byte(flag)) - data = append(data, hash[:32]...) - data = append(data, cipher...) - - ch := make(chan string, 1) - - wac.listenerMutex.Lock() - wac.listener[tag] = ch - wac.listenerMutex.Unlock() - - msg := wsMsg{websocket.BinaryMessage, data} - wac.writeChan <- msg - - wac.msgCount++ - return ch, nil -} - -func (wac *Conn) readPump() { - defer wac.wsConn.Close() - - for { - msgType, msg, err := wac.wsConn.ReadMessage() - if err != nil { - wac.wsConnOK = false - if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway) { - wac.handle(fmt.Errorf("unexpected websocket close: %v", err)) - } - // sleep for a second and retry reading the next message - time.Sleep(time.Second) - continue - } - wac.wsConnOK = true - - data := strings.SplitN(string(msg), ",", 2) - - //Kepp-Alive Timestmap - if data[0][0] == '!' { - msecs, err := strconv.ParseInt(data[0][1:], 10, 64) - if err != nil { - fmt.Fprintf(os.Stderr, "Error converting time string to uint: %v\n", err) - continue - } - wac.ServerLastSeen = time.Unix(msecs/1000, (msecs%1000)*int64(time.Millisecond)) - continue - } - - wac.listenerMutex.RLock() - listener, hasListener := wac.listener[data[0]] - wac.listenerMutex.RUnlock() - - if len(data[1]) == 0 { - continue - } else if hasListener { - listener <- data[1] - - wac.listenerMutex.Lock() - delete(wac.listener, data[0]) - wac.listenerMutex.Unlock() - } else if msgType == 2 && wac.session != nil && wac.session.EncKey != nil { - message, err := wac.decryptBinaryMessage([]byte(data[1])) - if err != nil { - wac.handle(fmt.Errorf("error decoding binary: %v", err)) - continue - } - - wac.dispatch(message) - } else { - wac.handle(string(data[1])) - } - - } -} - -func (wac *Conn) writePump() { - for msg := range wac.writeChan { - for !wac.isConnected() { - // reconnect to send the message ASAP - wac.wsConnMutex.Lock() - if wac.wsConn == nil { - if err := wac.connect(); err != nil { - fmt.Fprintf(os.Stderr, "could not reconnect to websocket: %v\n", err) - } - } - wac.wsConnMutex.Unlock() - if !wac.isConnected() { - // reconnecting failed. Sleep for a while and try again afterwards - time.Sleep(time.Duration(rand.Intn(5)) * time.Second) - } - } - if err := wac.wsConn.WriteMessage(msg.messageType, msg.data); err != nil { - fmt.Fprintf(os.Stderr, "error writing to socket: %v\n", err) - wac.wsConnOK = false - // add message to channel again to no loose it - go func() { - wac.writeChan <- msg - }() - } - } -} - -func (wac *Conn) sendKeepAlive() { - // whatever issues might be there allow sending this message - wac.wsConnOK = true - wac.writeChan <- wsMsg{ - messageType: websocket.TextMessage, - data: []byte("?,,"), - } -} - -func (wac *Conn) keepAlive(minIntervalMs int, maxIntervalMs int) { - for { - wac.sendKeepAlive() - interval := rand.Intn(maxIntervalMs-minIntervalMs) + minIntervalMs - <-time.After(time.Duration(interval) * time.Millisecond) - } -} - -func (wac *Conn) decryptBinaryMessage(msg []byte) (*binary.Node, error) { - //message validation - h2 := hmac.New(sha256.New, wac.session.MacKey) - h2.Write([]byte(msg[32:])) - if !hmac.Equal(h2.Sum(nil), msg[:32]) { - return nil, fmt.Errorf("message received with invalid hmac") - } - - // message decrypt - d, err := cbc.Decrypt(wac.session.EncKey, nil, msg[32:]) - if err != nil { - return nil, fmt.Errorf("error decrypting message with AES: %v", err) - } - - // message unmarshal - message, err := binary.Unmarshal(d) - if err != nil { - return nil, fmt.Errorf("error decoding binary: %v", err) - } - - return message, nil -} |