147 lines
3.7 KiB
Go
147 lines
3.7 KiB
Go
package libgm
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import (
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"bytes"
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"encoding/base64"
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"errors"
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"io"
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"net/http"
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"strconv"
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"github.com/google/uuid"
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"google.golang.org/protobuf/proto"
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"go.mau.fi/mautrix-gmessages/libgm/binary"
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"go.mau.fi/mautrix-gmessages/libgm/payload"
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"go.mau.fi/mautrix-gmessages/libgm/util"
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)
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type StartGoogleUpload struct {
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UploadID string
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UploadURL string
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UploadStatus string
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ChunkGranularity int64
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ControlURL string
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MimeType string
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EncryptedMediaBytes []byte
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}
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type MediaUpload struct {
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MediaID string
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MediaNumber int64
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}
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var (
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errStartUploadMedia = errors.New("failed to start uploading media")
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errFinalizeUploadMedia = errors.New("failed to finalize uploading media")
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)
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func (c *Client) FinalizeUploadMedia(upload *StartGoogleUpload) (*MediaUpload, error) {
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encryptedImageSize := strconv.Itoa(len(upload.EncryptedMediaBytes))
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finalizeUploadHeaders := util.NewMediaUploadHeaders(encryptedImageSize, "upload, finalize", "0", upload.MimeType, "")
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req, reqErr := http.NewRequest("POST", upload.UploadURL, bytes.NewBuffer(upload.EncryptedMediaBytes))
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if reqErr != nil {
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return nil, reqErr
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}
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req.Header = *finalizeUploadHeaders
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res, resErr := c.http.Do(req)
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if resErr != nil {
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panic(resErr)
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}
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statusCode := res.StatusCode
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if statusCode != 200 {
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return nil, errFinalizeUploadMedia
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}
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defer res.Body.Close()
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rHeaders := res.Header
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googleResponse, err3 := io.ReadAll(base64.NewDecoder(base64.StdEncoding, res.Body))
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if err3 != nil {
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return nil, err3
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}
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uploadStatus := rHeaders.Get("x-goog-upload-status")
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c.Logger.Debug().Str("upload_status", uploadStatus).Msg("Upload complete")
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mediaIDs := &binary.UploadMediaResponse{}
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err3 = proto.Unmarshal(googleResponse, mediaIDs)
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if err3 != nil {
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return nil, err3
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}
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return &MediaUpload{
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MediaID: mediaIDs.Media.MediaID,
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MediaNumber: mediaIDs.Media.MediaNumber,
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}, nil
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}
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func (c *Client) StartUploadMedia(encryptedImageBytes []byte, mime string) (*StartGoogleUpload, error) {
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encryptedImageSize := strconv.Itoa(len(encryptedImageBytes))
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startUploadHeaders := util.NewMediaUploadHeaders(encryptedImageSize, "start", "", mime, "resumable")
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startUploadPayload, buildPayloadErr := c.buildStartUploadPayload()
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if buildPayloadErr != nil {
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return nil, buildPayloadErr
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}
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req, reqErr := http.NewRequest("POST", util.UploadMediaURL, bytes.NewBuffer([]byte(startUploadPayload)))
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if reqErr != nil {
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return nil, reqErr
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}
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req.Header = *startUploadHeaders
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res, resErr := c.http.Do(req)
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if resErr != nil {
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panic(resErr)
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}
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statusCode := res.StatusCode
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if statusCode != 200 {
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return nil, errStartUploadMedia
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}
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rHeaders := res.Header
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chunkGranularity, convertErr := strconv.Atoi(rHeaders.Get("x-goog-upload-chunk-granularity"))
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if convertErr != nil {
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return nil, convertErr
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}
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uploadResponse := &StartGoogleUpload{
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UploadID: rHeaders.Get("x-guploader-uploadid"),
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UploadURL: rHeaders.Get("x-goog-upload-url"),
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UploadStatus: rHeaders.Get("x-goog-upload-status"),
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ChunkGranularity: int64(chunkGranularity),
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ControlURL: rHeaders.Get("x-goog-upload-control-url"),
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MimeType: mime,
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EncryptedMediaBytes: encryptedImageBytes,
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}
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return uploadResponse, nil
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}
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func (c *Client) buildStartUploadPayload() (string, error) {
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protoData := &binary.StartMediaUploadPayload{
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ImageType: 1,
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AuthData: &binary.AuthMessage{
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RequestID: uuid.NewString(),
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TachyonAuthToken: c.authData.TachyonAuthToken,
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ConfigVersion: payload.ConfigMessage,
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},
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Mobile: c.authData.Mobile,
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}
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protoDataBytes, err := proto.Marshal(protoData)
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if err != nil {
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return "", err
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}
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protoDataEncoded := base64.StdEncoding.EncodeToString(protoDataBytes)
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return protoDataEncoded, nil
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}
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