mirror of
https://github.com/openlibrecommunity/olcrtc.git
synced 2026-05-30 17:09:43 +00:00
80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
// Package telemost is the auth provider for the Yandex Telemost service.
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// It fetches the connection metadata (media server URL, peer ID, room ID,
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// signing credentials) the Goolom engine needs to join a conference.
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//
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// Telemost does not expose an API to create rooms — they originate in the
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// Yandex UI — so this provider does not implement auth.RoomCreator.
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package telemost
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"net/url"
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"github.com/google/uuid"
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"github.com/openlibrecommunity/olcrtc/internal/protect"
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)
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//nolint:gochecknoglobals // overridable base URL for tests
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var apiBase = "https://cloud-api.yandex.ru/telemost_front/v2/telemost"
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// ErrAPI marks failures returned by the Telemost HTTP API.
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var ErrAPI = errors.New("api error")
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// ConnectionInfo describes the connection metadata returned by the Telemost API.
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//
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//nolint:tagliatelle // wire format dictated by the upstream Telemost API
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type ConnectionInfo struct {
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RoomID string `json:"room_id"`
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PeerID string `json:"peer_id"`
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Credentials string `json:"credentials"`
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ClientConfig struct {
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MediaServerURL string `json:"media_server_url"`
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} `json:"client_configuration"`
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}
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// GetConnectionInfo fetches connection metadata for the given Telemost room URL.
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func GetConnectionInfo(ctx context.Context, roomURL, displayName string) (*ConnectionInfo, error) {
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u := fmt.Sprintf("%s/conferences/%s/connection", apiBase, url.QueryEscape(roomURL))
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, u, nil)
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if err != nil {
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return nil, fmt.Errorf("failed to create request: %w", err)
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}
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q := req.URL.Query()
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q.Add("next_gen_media_platform_allowed", "true")
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q.Add("display_name", displayName)
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q.Add("waiting_room_supported", "true")
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req.URL.RawQuery = q.Encode()
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req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0")
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req.Header.Set("Accept", "*/*")
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Client-Instance-Id", uuid.New().String())
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req.Header.Set("X-Telemost-Client-Version", "187.1.0")
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req.Header.Set("Idempotency-Key", uuid.New().String())
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req.Header.Set("Origin", "https://telemost.yandex.ru")
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req.Header.Set("Referer", "https://telemost.yandex.ru/")
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client := protect.NewHTTPClient()
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resp, err := client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("failed to do request: %w", err)
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}
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defer func() { _ = resp.Body.Close() }()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("telemost api status: %w", protect.StatusError(ErrAPI, resp, 4096))
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}
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var info ConnectionInfo
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if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
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return nil, fmt.Errorf("failed to decode response: %w", err)
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}
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return &info, nil
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}
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