132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
package providers
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import (
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"github.com/pusher/oauth2_proxy/cookie"
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)
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// Redeem provides a default implementation of the OAuth2 token redemption process
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func (p *ProviderData) Redeem(redirectURL, code string) (s *SessionState, err error) {
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if code == "" {
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err = errors.New("missing code")
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return
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}
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params := url.Values{}
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params.Add("redirect_uri", redirectURL)
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params.Add("client_id", p.ClientID)
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params.Add("client_secret", p.ClientSecret)
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params.Add("code", code)
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params.Add("grant_type", "authorization_code")
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if p.ProtectedResource != nil && p.ProtectedResource.String() != "" {
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params.Add("resource", p.ProtectedResource.String())
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}
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var req *http.Request
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req, err = http.NewRequest("POST", p.RedeemURL.String(), bytes.NewBufferString(params.Encode()))
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if err != nil {
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return
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}
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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var resp *http.Response
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resp, err = http.DefaultClient.Do(req)
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if err != nil {
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return nil, err
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}
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var body []byte
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body, err = ioutil.ReadAll(resp.Body)
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resp.Body.Close()
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if err != nil {
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return
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}
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if resp.StatusCode != 200 {
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err = fmt.Errorf("got %d from %q %s", resp.StatusCode, p.RedeemURL.String(), body)
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return
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}
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// blindly try json and x-www-form-urlencoded
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var jsonResponse struct {
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AccessToken string `json:"access_token"`
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}
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err = json.Unmarshal(body, &jsonResponse)
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if err == nil {
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s = &SessionState{
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AccessToken: jsonResponse.AccessToken,
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}
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return
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}
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var v url.Values
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v, err = url.ParseQuery(string(body))
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if err != nil {
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return
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}
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if a := v.Get("access_token"); a != "" {
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s = &SessionState{AccessToken: a}
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} else {
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err = fmt.Errorf("no access token found %s", body)
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}
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return
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}
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// GetLoginURL with typical oauth parameters
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func (p *ProviderData) GetLoginURL(redirectURI, state string) string {
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var a url.URL
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a = *p.LoginURL
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params, _ := url.ParseQuery(a.RawQuery)
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params.Set("redirect_uri", redirectURI)
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params.Set("approval_prompt", p.ApprovalPrompt)
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params.Add("scope", p.Scope)
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params.Set("client_id", p.ClientID)
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params.Set("response_type", "code")
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params.Add("state", state)
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a.RawQuery = params.Encode()
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return a.String()
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}
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// CookieForSession serializes a session state for storage in a cookie
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func (p *ProviderData) CookieForSession(s *SessionState, c *cookie.Cipher) (string, error) {
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return s.EncodeSessionState(c)
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}
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// SessionFromCookie deserializes a session from a cookie value
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func (p *ProviderData) SessionFromCookie(v string, c *cookie.Cipher) (s *SessionState, err error) {
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return DecodeSessionState(v, c)
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}
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// GetEmailAddress returns the Account email address
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func (p *ProviderData) GetEmailAddress(s *SessionState) (string, error) {
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return "", errors.New("not implemented")
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}
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// GetUserName returns the Account username
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func (p *ProviderData) GetUserName(s *SessionState) (string, error) {
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return "", errors.New("not implemented")
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}
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// ValidateGroup validates that the provided email exists in the configured provider
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// email group(s).
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func (p *ProviderData) ValidateGroup(email string) bool {
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return true
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}
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// ValidateSessionState validates the AccessToken
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func (p *ProviderData) ValidateSessionState(s *SessionState) bool {
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return validateToken(p, s.AccessToken, nil)
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}
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// RefreshSessionIfNeeded should refresh the user's session if required and
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// do nothing if a refresh is not required
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func (p *ProviderData) RefreshSessionIfNeeded(s *SessionState) (bool, error) {
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return false, nil
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}
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