Add dependencies/vendor (whatsapp)

vendor/go.mau.fi/whatsmeow/request.go

@@ -0,0 +1,141 @@
+// Copyright (c) 2021 Tulir Asokan
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package whatsmeow
+
+import (
+	"context"
+	"strconv"
+	"sync/atomic"
+	"time"
+
+	waBinary "go.mau.fi/whatsmeow/binary"
+	"go.mau.fi/whatsmeow/types"
+)
+
+func (cli *Client) generateRequestID() string {
+	return cli.uniqueID + strconv.FormatUint(uint64(atomic.AddUint32(&cli.idCounter, 1)), 10)
+}
+
+var closedNode = &waBinary.Node{Tag: "xmlstreamend"}
+
+func (cli *Client) clearResponseWaiters() {
+	cli.responseWaitersLock.Lock()
+	for _, waiter := range cli.responseWaiters {
+		select {
+		case waiter <- closedNode:
+		default:
+			close(waiter)
+		}
+	}
+	cli.responseWaiters = make(map[string]chan<- *waBinary.Node)
+	cli.responseWaitersLock.Unlock()
+}
+
+func (cli *Client) waitResponse(reqID string) chan *waBinary.Node {
+	ch := make(chan *waBinary.Node, 1)
+	cli.responseWaitersLock.Lock()
+	cli.responseWaiters[reqID] = ch
+	cli.responseWaitersLock.Unlock()
+	return ch
+}
+
+func (cli *Client) cancelResponse(reqID string, ch chan *waBinary.Node) {
+	cli.responseWaitersLock.Lock()
+	close(ch)
+	delete(cli.responseWaiters, reqID)
+	cli.responseWaitersLock.Unlock()
+}
+
+func (cli *Client) receiveResponse(data *waBinary.Node) bool {
+	id, ok := data.Attrs["id"].(string)
+	if !ok || (data.Tag != "iq" && data.Tag != "ack") {
+		return false
+	}
+	cli.responseWaitersLock.Lock()
+	waiter, ok := cli.responseWaiters[id]
+	if !ok {
+		cli.responseWaitersLock.Unlock()
+		return false
+	}
+	delete(cli.responseWaiters, id)
+	cli.responseWaitersLock.Unlock()
+	waiter <- data
+	return true
+}
+
+type infoQueryType string
+
+const (
+	iqSet infoQueryType = "set"
+	iqGet infoQueryType = "get"
+)
+
+type infoQuery struct {
+	Namespace string
+	Type      infoQueryType
+	To        types.JID
+	ID        string
+	Content   interface{}
+
+	Timeout time.Duration
+	Context context.Context
+}
+
+func (cli *Client) sendIQAsync(query infoQuery) (<-chan *waBinary.Node, error) {
+	if len(query.ID) == 0 {
+		query.ID = cli.generateRequestID()
+	}
+	waiter := cli.waitResponse(query.ID)
+	attrs := waBinary.Attrs{
+		"id":    query.ID,
+		"xmlns": query.Namespace,
+		"type":  string(query.Type),
+	}
+	if !query.To.IsEmpty() {
+		attrs["to"] = query.To
+	}
+	err := cli.sendNode(waBinary.Node{
+		Tag:     "iq",
+		Attrs:   attrs,
+		Content: query.Content,
+	})
+	if err != nil {
+		cli.cancelResponse(query.ID, waiter)
+		return nil, err
+	}
+	return waiter, nil
+}
+
+func (cli *Client) sendIQ(query infoQuery) (*waBinary.Node, error) {
+	resChan, err := cli.sendIQAsync(query)
+	if err != nil {
+		return nil, err
+	}
+	if query.Timeout == 0 {
+		query.Timeout = 1 * time.Minute
+	}
+	if query.Context == nil {
+		query.Context = context.Background()
+	}
+	select {
+	case res := <-resChan:
+		if res == closedNode {
+			return nil, ErrIQDisconnected
+		}
+		resType, _ := res.Attrs["type"].(string)
+		if res.Tag != "iq" || (resType != "result" && resType != "error") {
+			return res, &IQError{RawNode: res}
+		} else if resType == "error" {
+			return res, parseIQError(res)
+		}
+		return res, nil
+	case <-query.Context.Done():
+		return nil, query.Context.Err()
+	case <-time.After(query.Timeout):
+		return nil, ErrIQTimedOut
+	}
+}