forgejo/vendor/github.com/markbates/goth/providers/bitbucket/bitbucket.go
Lauris BH 7b297808ce
Update markbates/goth library (#3533)
Signed-off-by: Lauris Bukšis-Haberkorns <lauris@nix.lv>
2018-02-19 07:10:51 +02:00

206 lines
5.1 KiB
Go
Vendored

// Package bitbucket implements the OAuth2 protocol for authenticating users through Bitbucket.
package bitbucket
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"net/url"
"fmt"
"github.com/markbates/goth"
"golang.org/x/oauth2"
)
const (
authURL string = "https://bitbucket.org/site/oauth2/authorize"
tokenURL string = "https://bitbucket.org/site/oauth2/access_token"
endpointProfile string = "https://api.bitbucket.org/2.0/user"
endpointEmail string = "https://api.bitbucket.org/2.0/user/emails"
)
// New creates a new Bitbucket provider, and sets up important connection details.
// You should always call `bitbucket.New` to get a new Provider. Never try to create
// one manually.
func New(clientKey, secret, callbackURL string, scopes ...string) *Provider {
p := &Provider{
ClientKey: clientKey,
Secret: secret,
CallbackURL: callbackURL,
providerName: "bitbucket",
}
p.config = newConfig(p, scopes)
return p
}
// Provider is the implementation of `goth.Provider` for accessing Bitbucket.
type Provider struct {
ClientKey string
Secret string
CallbackURL string
HTTPClient *http.Client
config *oauth2.Config
providerName string
}
// Name is the name used to retrieve this provider later.
func (p *Provider) Name() string {
return p.providerName
}
// SetName is to update the name of the provider (needed in case of multiple providers of 1 type)
func (p *Provider) SetName(name string) {
p.providerName = name
}
func (p *Provider) Client() *http.Client {
return goth.HTTPClientWithFallBack(p.HTTPClient)
}
// Debug is a no-op for the bitbucket package.
func (p *Provider) Debug(debug bool) {}
// BeginAuth asks Bitbucket for an authentication end-point.
func (p *Provider) BeginAuth(state string) (goth.Session, error) {
url := p.config.AuthCodeURL(state)
session := &Session{
AuthURL: url,
}
return session, nil
}
// FetchUser will go to Bitbucket and access basic information about the user.
func (p *Provider) FetchUser(session goth.Session) (goth.User, error) {
sess := session.(*Session)
user := goth.User{
AccessToken: sess.AccessToken,
Provider: p.Name(),
RefreshToken: sess.RefreshToken,
ExpiresAt: sess.ExpiresAt,
}
if user.AccessToken == "" {
// data is not yet retrieved since accessToken is still empty
return user, fmt.Errorf("%s cannot get user information without accessToken", p.providerName)
}
response, err := goth.HTTPClientWithFallBack(p.Client()).Get(endpointProfile + "?access_token=" + url.QueryEscape(sess.AccessToken))
if err != nil {
return user, err
}
defer response.Body.Close()
if response.StatusCode != http.StatusOK {
return user, fmt.Errorf("%s responded with a %d trying to fetch user information", p.providerName, response.StatusCode)
}
bits, err := ioutil.ReadAll(response.Body)
if err != nil {
return user, err
}
err = json.NewDecoder(bytes.NewReader(bits)).Decode(&user.RawData)
if err != nil {
return user, err
}
err = userFromReader(bytes.NewReader(bits), &user)
response, err = goth.HTTPClientWithFallBack(p.Client()).Get(endpointEmail + "?access_token=" + url.QueryEscape(sess.AccessToken))
if err != nil {
return user, err
}
defer response.Body.Close()
bits, err = ioutil.ReadAll(response.Body)
if err != nil {
return user, err
}
err = emailFromReader(bytes.NewReader(bits), &user)
return user, err
}
func userFromReader(reader io.Reader, user *goth.User) error {
u := struct {
ID string `json:"uuid"`
Links struct {
Avatar struct {
URL string `json:"href"`
} `json:"avatar"`
} `json:"links"`
Email string `json:"email"`
Username string `json:"username"`
Name string `json:"display_name"`
Location string `json:"location"`
}{}
err := json.NewDecoder(reader).Decode(&u)
if err != nil {
return err
}
user.Name = u.Name
user.NickName = u.Username
user.AvatarURL = u.Links.Avatar.URL
user.UserID = u.ID
user.Location = u.Location
return err
}
func emailFromReader(reader io.Reader, user *goth.User) error {
e := struct {
Values []struct {
Email string `json:"email"`
} `json:"values"`
}{}
err := json.NewDecoder(reader).Decode(&e)
if err != nil {
return err
}
if len(e.Values) > 0 {
user.Email = e.Values[0].Email
}
return err
}
func newConfig(provider *Provider, scopes []string) *oauth2.Config {
c := &oauth2.Config{
ClientID: provider.ClientKey,
ClientSecret: provider.Secret,
RedirectURL: provider.CallbackURL,
Endpoint: oauth2.Endpoint{
AuthURL: authURL,
TokenURL: tokenURL,
},
Scopes: []string{},
}
for _, scope := range scopes {
c.Scopes = append(c.Scopes, scope)
}
return c
}
//RefreshTokenAvailable refresh token is provided by auth provider or not
func (p *Provider) RefreshTokenAvailable() bool {
return true
}
//RefreshToken get new access token based on the refresh token
func (p *Provider) RefreshToken(refreshToken string) (*oauth2.Token, error) {
token := &oauth2.Token{RefreshToken: refreshToken}
ts := p.config.TokenSource(goth.ContextForClient(p.Client()), token)
newToken, err := ts.Token()
if err != nil {
return nil, err
}
return newToken, err
}