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header.go
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header.go
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package googleplay
import (
"github.com/TravelSir/format/protobuf"
"net/http"
"net/url"
"strconv"
"strings"
)
type Header struct {
http.Header
}
func (h Header) Delivery(app string, ver uint64) (*Delivery, error) {
req, err := http.NewRequest(
"GET", "https://play-fe.googleapis.com/fdfe/delivery", nil,
)
if err != nil {
return nil, err
}
req.Header = h.Header
req.URL.RawQuery = url.Values{
"doc": {app},
"vc": {strconv.FormatUint(ver, 10)},
}.Encode()
LogLevel.Dump(req)
res, err := new(http.Transport).RoundTrip(req)
if err != nil {
return nil, err
}
defer res.Body.Close()
responseWrapper, err := protobuf.Decode(res.Body)
if err != nil {
return nil, err
}
// .payload.deliveryResponse.status
status, err := responseWrapper.Get(1).Get(21).GetVarint(1)
if err != nil {
return nil, err
}
switch status {
case 2:
return nil, errorString("Geo-blocking")
case 3:
return nil, errorString("Purchase required")
case 5:
return nil, errorString("Invalid version")
}
// .payload.deliveryResponse.appDeliveryData
appData := responseWrapper.Get(1).Get(21).Get(2)
var del Delivery
// downloadUrl
del.DownloadURL, err = appData.GetString(3)
if err != nil {
return nil, err
}
// .splitDeliveryData
for _, data := range appData.GetMessages(15) {
var split SplitDeliveryData
// .id
split.ID, err = data.GetString(1)
if err != nil {
return nil, err
}
// .downloadUrl
split.DownloadURL, err = data.GetString(5)
if err != nil {
return nil, err
}
del.SplitDeliveryData = append(del.SplitDeliveryData, split)
}
return &del, nil
}
func (h Header) Details(app string) (*Details, error) {
req, err := http.NewRequest(
"GET", "https://android.clients.google.com/fdfe/details", nil,
)
if err != nil {
return nil, err
}
req.Header = h.Header
req.URL.RawQuery = "doc=" + url.QueryEscape(app)
LogLevel.Dump(req)
res, err := new(http.Transport).RoundTrip(req)
if err != nil {
return nil, err
}
if res.StatusCode != http.StatusOK {
return nil, errorString(res.Status)
}
responseWrapper, err := protobuf.Decode(res.Body)
if err != nil {
return nil, err
}
// .payload.detailsResponse.docV2
docV2 := responseWrapper.Get(1).Get(2).Get(4)
var det Details
// .creator
det.Creator, err = docV2.GetString(6)
if err != nil {
return nil, err
}
// .offer.currencyCode
det.CurrencyCode, err = docV2.Get(8).GetString(2)
if err != nil {
return nil, err
}
// .details.appDetails.file
files := docV2.Get(13).Get(1).GetMessages(17)
det.Files = len(files)
// .offer.micros
det.Micros, err = docV2.Get(8).GetVarint(1)
if err != nil {
return nil, err
}
// I dont know the name of field 70
// .details.appDetails
det.NumDownloads, err = docV2.Get(13).Get(1).GetVarint(70)
if err != nil {
return nil, err
}
// The shorter path 13,1,9 returns wrong size for some packages:
// com.riotgames.league.wildriftvn
// .details.appDetails.installDetails.size
det.Size, err = docV2.Get(13).Get(1).Get(34).GetVarint(2)
if err != nil {
return nil, err
}
// .title
det.Title, err = docV2.GetString(5)
if err != nil {
return nil, err
}
// .details.appDetails.uploadDate
det.UploadDate, err = docV2.Get(13).Get(1).GetString(16)
if err != nil {
return nil, err
}
// .details.appDetails.versionCode
det.VersionCode, err = docV2.Get(13).Get(1).GetVarint(3)
if err != nil {
return nil, err
}
// .details.appDetails.versionString
det.VersionString, err = docV2.Get(13).Get(1).GetString(4)
if err != nil {
return nil, err
}
return &det, nil
}
// Purchase app. Only needs to be done once per Google account.
func (h Header) Purchase(app string) error {
query := "doc=" + url.QueryEscape(app)
req, err := http.NewRequest(
"POST", "https://android.clients.google.com/fdfe/purchase",
strings.NewReader(query),
)
if err != nil {
return err
}
h.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header = h.Header
LogLevel.Dump(req)
res, err := new(http.Transport).RoundTrip(req)
if err != nil {
return err
}
defer res.Body.Close()
if res.StatusCode != http.StatusOK {
return errorString(res.Status)
}
return nil
}