summaryrefslogtreecommitdiffstats
path: root/vendor/github.com/Rhymen/go-whatsapp/media.go
diff options
context:
space:
mode:
authorWim <wim@42.be>2019-03-02 13:04:28 +0100
committerGitHub <noreply@github.com>2019-03-02 13:04:28 +0100
commitdf3fdc26a01a20c3568b824f4f15f9b56a2f3db3 (patch)
tree053e3caf197063f94af386e60c67e4bef69a7863 /vendor/github.com/Rhymen/go-whatsapp/media.go
parentaf00c34aaccb3521b8dbf0bd8876a5b38d5d42f4 (diff)
downloadmatterbridge-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.go199
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
-}