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94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
// Copyright (c) 2021 Tulir Asokan
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package whatsmeow
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import (
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"fmt"
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"time"
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waBinary "go.mau.fi/whatsmeow/binary"
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"go.mau.fi/whatsmeow/types"
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)
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//type MediaConnIP struct {
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// IP4 net.IP
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// IP6 net.IP
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//}
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// MediaConnHost represents a single host to download media from.
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type MediaConnHost struct {
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Hostname string
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//IPs []MediaConnIP
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}
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// MediaConn contains a list of WhatsApp servers from which attachments can be downloaded from.
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type MediaConn struct {
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Auth string
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AuthTTL int
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TTL int
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MaxBuckets int
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FetchedAt time.Time
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Hosts []MediaConnHost
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}
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// Expiry returns the time when the MediaConn expires.
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func (mc *MediaConn) Expiry() time.Time {
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return mc.FetchedAt.Add(time.Duration(mc.TTL) * time.Second)
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}
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func (cli *Client) refreshMediaConn(force bool) (*MediaConn, error) {
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cli.mediaConnLock.Lock()
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defer cli.mediaConnLock.Unlock()
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if cli.mediaConnCache == nil || force || time.Now().After(cli.mediaConnCache.Expiry()) {
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var err error
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cli.mediaConnCache, err = cli.queryMediaConn()
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if err != nil {
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return nil, err
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}
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}
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return cli.mediaConnCache, nil
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}
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func (cli *Client) queryMediaConn() (*MediaConn, error) {
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resp, err := cli.sendIQ(infoQuery{
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Namespace: "w:m",
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Type: "set",
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To: types.ServerJID,
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Content: []waBinary.Node{{Tag: "media_conn"}},
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})
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if err != nil {
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return nil, fmt.Errorf("failed to query media connections: %w", err)
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} else if len(resp.GetChildren()) == 0 || resp.GetChildren()[0].Tag != "media_conn" {
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return nil, fmt.Errorf("failed to query media connections: unexpected child tag")
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}
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respMC := resp.GetChildren()[0]
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var mc MediaConn
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ag := respMC.AttrGetter()
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mc.FetchedAt = time.Now()
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mc.Auth = ag.String("auth")
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mc.TTL = ag.Int("ttl")
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mc.AuthTTL = ag.Int("auth_ttl")
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mc.MaxBuckets = ag.Int("max_buckets")
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if !ag.OK() {
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return nil, fmt.Errorf("failed to parse media connections: %+v", ag.Errors)
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}
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for _, child := range respMC.GetChildren() {
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if child.Tag != "host" {
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cli.Log.Warnf("Unexpected child in media_conn element: %s", child.XMLString())
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continue
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}
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cag := child.AttrGetter()
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mc.Hosts = append(mc.Hosts, MediaConnHost{
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Hostname: cag.String("hostname"),
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})
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if !cag.OK() {
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return nil, fmt.Errorf("failed to parse media connection host: %+v", ag.Errors)
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}
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}
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return &mc, nil
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}
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