func initTransport(transport *oauth.Transport) error {
// First: check the cache.
if token, err := transport.Config.TokenCache.Token(); err == nil {
// We have a token, refresh it. The lifetime is 1h, so we always
// refresh to ensure lengthy commands do not time out.
transport.Token = token
err := transport.Refresh()
if err == nil {
return nil
}
log.Infof("token refresh failed, requesting new one")
}
// Get a new token. Pops up a browser window (hopefully).
randState := fmt.Sprintf("st%d", time.Now().UnixNano())
authURL := transport.Config.AuthCodeURL(randState)
log.Infof("Opening auth URL in browser: %s", authURL)
log.Infof("If the URL doesn't open please open it manually and copy the code here.")
openURL(authURL)
code := getCodeFromStdin()
_, err := transport.Exchange(code)
if err != nil {
log.Infof("problem exchanging code: %v", err)
return err
}
return nil
}
// Returns true if we have a valid cached token
func hasValidToken(cacheFile oauth.CacheFile, transport *oauth.Transport) bool {
// Check if we have a cached token
token, err := cacheFile.Token()
if err != nil {
return false
}
// Refresh token if its expired
if token.Expired() {
transport.Token = token
err = transport.Refresh()
if err != nil {
fmt.Println(err)
return false
}
}
return true
}
func httpGET(auth *Auth, url string) ([]byte, error) {
verb := "GET"
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
if i := strings.Index(url, "?"); i >= 0 {
url = url[:i]
}
req.Header.Set("X-CloudPrint-Proxy", auth.ProxyID)
var client *http.Client
if auth.Token.AccessToken != "" {
var tr oauth.Transport
tr.Config = &oauth.Config{
ClientId: auth.APIClientID,
ClientSecret: auth.APIClientSecret,
Scope: "https://www.googleapis.com/auth/cloudprint https://www.googleapis.com/auth/googletalk",
AuthURL: "https://accounts.google.com/o/oauth2/auth",
TokenURL: "https://accounts.google.com/o/oauth2/token",
RedirectURL: "oob",
}
tr.Token = &auth.Token
client = tr.Client()
} else {
client = http.DefaultClient
}
resp, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("%s %s: %v", verb, url, err)
}
defer resp.Body.Close()
var buf bytes.Buffer
_, err = io.Copy(&buf, resp.Body)
if err != nil {
return nil, fmt.Errorf("%s %s: reading HTTP response: %v", verb, url, err)
}
// TODO: Check 200
return buf.Bytes(), nil
}
func (s *OAuthScheme) Auth(header string) (auth.Token, error) {
token, err := getToken(header)
if err != nil {
nativeScheme := native.NativeScheme{}
token, nativeErr := nativeScheme.Auth(header)
if nativeErr == nil && token.IsAppToken() {
return token, nil
}
return nil, err
}
config, err := s.loadConfig()
if err != nil {
return nil, err
}
transport := goauth2.Transport{Config: &config}
transport.Token = &token.Token
client := transport.Client()
_, err = client.Get(s.InfoUrl)
if err != nil {
return nil, err
}
return makeToken(transport.Token), nil
}
func jsonRPC(auth *Auth, verb, url string, mr *multipartRequest, dst interface{}) error {
var reader io.Reader
if mr != nil {
if auth.ProxyID != "" {
mr.WriteField("proxy", auth.ProxyID)
}
mr.Writer.Close()
reader = &mr.buf
}
req, err := http.NewRequest(verb, url, reader)
if err != nil {
return err
}
if i := strings.Index(url, "?"); i >= 0 {
url = url[:i]
}
if mr != nil {
req.Header.Set("Content-Type", mr.FormDataContentType())
}
if auth.ProxyID != "" {
req.Header.Set("X-CloudPrint-Proxy", auth.ProxyID)
}
var client *http.Client
if auth.Token.AccessToken != "" {
var tr oauth.Transport
tr.Config = &oauth.Config{
ClientId: auth.APIClientID,
ClientSecret: auth.APIClientSecret,
Scope: "https://www.googleapis.com/auth/cloudprint https://www.googleapis.com/auth/googletalk",
AuthURL: "https://accounts.google.com/o/oauth2/auth",
TokenURL: "https://accounts.google.com/o/oauth2/token",
RedirectURL: "oob",
}
tr.Token = &auth.Token
client = tr.Client()
} else {
client = http.DefaultClient
}
resp, err := client.Do(req)
if err != nil {
return fmt.Errorf("%s %s: %v", verb, url, err)
}
defer resp.Body.Close()
var buf bytes.Buffer
_, err = io.Copy(&buf, resp.Body)
if err != nil {
return fmt.Errorf("%s %s: reading HTTP response: %v", verb, url, err)
}
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("%s %s: %s\n%s", verb, url, resp.Status, buf.Bytes())
}
fmt.Printf("%s\n", buf.Bytes())
var js jsonStatus
if err := json.Unmarshal(buf.Bytes(), &js); err != nil {
return fmt.Errorf("%s %s: invalid JSON response: %v", verb, url, err)
}
if !js.Success {
suffix := ""
if js.Message != "" {
msg := js.Message
if len(msg) > 2 && 'A' <= msg[0] && msg[0] <= 'Z' && 'a' <= msg[1] && msg[1] <= 'z' {
msg = string(msg[0]+'a'-'A') + msg[1:]
}
suffix = ": " + msg
} else {
suffix = "\n" + buf.String()
}
return fmt.Errorf("%s %s: server rejected request%s", verb, url, suffix)
}
if dst != nil {
if err := json.Unmarshal(buf.Bytes(), dst); err != nil {
return fmt.Errorf("%s %s: invalid JSON response: %v", verb, url, err)
}
}
return nil
}
func ClientFactory(token string, transport *oauth.Transport) *Client {
t := &oauth.Token{AccessToken: token}
transport.Token = t
c := Client{AccessToken: token, transport: transport}
return &c
}
