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author | Wim <wim@42.be> | 2019-03-02 13:04:28 +0100 |
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committer | GitHub <noreply@github.com> | 2019-03-02 13:04:28 +0100 |
commit | df3fdc26a01a20c3568b824f4f15f9b56a2f3db3 (patch) | |
tree | 053e3caf197063f94af386e60c67e4bef69a7863 /vendor/github.com/Rhymen/go-whatsapp/media.go | |
parent | af00c34aaccb3521b8dbf0bd8876a5b38d5d42f4 (diff) | |
download | matterbridge-msglm-df3fdc26a01a20c3568b824f4f15f9b56a2f3db3.tar.gz matterbridge-msglm-df3fdc26a01a20c3568b824f4f15f9b56a2f3db3.tar.bz2 matterbridge-msglm-df3fdc26a01a20c3568b824f4f15f9b56a2f3db3.zip |
Use whatsapp forks (#750)
Diffstat (limited to 'vendor/github.com/Rhymen/go-whatsapp/media.go')
-rw-r--r-- | vendor/github.com/Rhymen/go-whatsapp/media.go | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/vendor/github.com/Rhymen/go-whatsapp/media.go b/vendor/github.com/Rhymen/go-whatsapp/media.go deleted file mode 100644 index 6e2a4371..00000000 --- a/vendor/github.com/Rhymen/go-whatsapp/media.go +++ /dev/null @@ -1,199 +0,0 @@ -package whatsapp - -import ( - "bytes" - "crypto/hmac" - "crypto/rand" - "crypto/sha256" - "encoding/base64" - "encoding/json" - "fmt" - "github.com/Rhymen/go-whatsapp/crypto/cbc" - "github.com/Rhymen/go-whatsapp/crypto/hkdf" - "io" - "io/ioutil" - "mime/multipart" - "net/http" - "os" - "strings" - "time" -) - -func Download(url string, mediaKey []byte, appInfo MediaType, fileLength int) ([]byte, error) { - if url == "" { - return nil, fmt.Errorf("no url present") - } - file, mac, err := downloadMedia(url) - if err != nil { - return nil, err - } - iv, cipherKey, macKey, _, err := getMediaKeys(mediaKey, appInfo) - if err != nil { - return nil, err - } - if err = validateMedia(iv, file, macKey, mac); err != nil { - return nil, err - } - data, err := cbc.Decrypt(cipherKey, iv, file) - if err != nil { - return nil, err - } - if len(data) != fileLength { - return nil, fmt.Errorf("file length does not match") - } - return data, nil -} - -func validateMedia(iv []byte, file []byte, macKey []byte, mac []byte) error { - h := hmac.New(sha256.New, macKey) - n, err := h.Write(append(iv, file...)) - if err != nil { - return err - } - if n < 10 { - return fmt.Errorf("hash to short") - } - if !hmac.Equal(h.Sum(nil)[:10], mac) { - return fmt.Errorf("invalid media hmac") - } - return nil -} - -func getMediaKeys(mediaKey []byte, appInfo MediaType) (iv, cipherKey, macKey, refKey []byte, err error) { - mediaKeyExpanded, err := hkdf.Expand(mediaKey, 112, string(appInfo)) - if err != nil { - return nil, nil, nil, nil, err - } - return mediaKeyExpanded[:16], mediaKeyExpanded[16:48], mediaKeyExpanded[48:80], mediaKeyExpanded[80:], nil -} - -func downloadMedia(url string) (file []byte, mac []byte, err error) { - resp, err := http.Get(url) - if err != nil { - return nil, nil, err - } - if resp.StatusCode != 200 { - return nil, nil, fmt.Errorf("download failed") - } - defer resp.Body.Close() - if resp.ContentLength <= 10 { - return nil, nil, fmt.Errorf("file to short") - } - data, err := ioutil.ReadAll(resp.Body) - n := len(data) - if err != nil { - return nil, nil, err - } - return data[:n-10], data[n-10 : n], nil -} - -func (wac *Conn) Upload(reader io.Reader, appInfo MediaType) (url string, mediaKey []byte, fileEncSha256 []byte, fileSha256 []byte, fileLength uint64, err error) { - data, err := ioutil.ReadAll(reader) - if err != nil { - return "", nil, nil, nil, 0, err - } - - mediaKey = make([]byte, 32) - rand.Read(mediaKey) - - iv, cipherKey, macKey, _, err := getMediaKeys(mediaKey, appInfo) - if err != nil { - return "", nil, nil, nil, 0, err - } - - enc, err := cbc.Encrypt(cipherKey, iv, data) - if err != nil { - return "", nil, nil, nil, 0, err - } - - fileLength = uint64(len(data)) - - h := hmac.New(sha256.New, macKey) - h.Write(append(iv, enc...)) - mac := h.Sum(nil)[:10] - - sha := sha256.New() - sha.Write(data) - fileSha256 = sha.Sum(nil) - - sha.Reset() - sha.Write(append(enc, mac...)) - fileEncSha256 = sha.Sum(nil) - - var filetype string - switch appInfo { - case MediaImage: - filetype = "image" - case MediaAudio: - filetype = "audio" - case MediaDocument: - filetype = "document" - case MediaVideo: - filetype = "video" - } - - uploadReq := []interface{}{"action", "encr_upload", filetype, base64.StdEncoding.EncodeToString(fileEncSha256)} - ch, err := wac.write(uploadReq) - if err != nil { - return "", nil, nil, nil, 0, err - } - - var resp map[string]interface{} - select { - case r := <-ch: - if err = json.Unmarshal([]byte(r), &resp); err != nil { - return "", nil, nil, nil, 0, fmt.Errorf("error decoding upload response: %v\n", err) - } - case <-time.After(wac.msgTimeout): - return "", nil, nil, nil, 0, fmt.Errorf("restore session init timed out") - } - - if int(resp["status"].(float64)) != 200 { - return "", nil, nil, nil, 0, fmt.Errorf("upload responsed with %d", resp["status"]) - } - - var b bytes.Buffer - w := multipart.NewWriter(&b) - hashWriter, err := w.CreateFormField("hash") - if err != nil { - fmt.Fprintf(os.Stderr, "%v\n", err) - } - io.Copy(hashWriter, strings.NewReader(base64.StdEncoding.EncodeToString(fileEncSha256))) - - fileWriter, err := w.CreateFormFile("file", "blob") - if err != nil { - fmt.Fprintf(os.Stderr, "%v\n", err) - } - io.Copy(fileWriter, bytes.NewReader(append(enc, mac...))) - err = w.Close() - if err != nil { - fmt.Fprintf(os.Stderr, "%v\n", err) - } - - req, err := http.NewRequest("POST", resp["url"].(string), &b) - if err != nil { - return "", nil, nil, nil, 0, err - } - - req.Header.Set("Content-Type", w.FormDataContentType()) - req.Header.Set("Origin", "https://web.whatsapp.com") - req.Header.Set("Referer", "https://web.whatsapp.com/") - - req.URL.Query().Set("f", "j") - - client := &http.Client{} - // Submit the request - res, err := client.Do(req) - if err != nil { - return "", nil, nil, nil, 0, err - } - - if res.StatusCode != http.StatusOK { - return "", nil, nil, nil, 0, fmt.Errorf("upload failed with status code %d", res.StatusCode) - } - - var jsonRes map[string]string - json.NewDecoder(res.Body).Decode(&jsonRes) - - return jsonRes["url"], mediaKey, fileEncSha256, fileSha256, fileLength, nil -} |