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oauth.go
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oauth.go
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package client
import (
"crypto/tls"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"path"
"strings"
"time"
"github.com/sirupsen/logrus"
)
const OauthURL string = "https://app.foundries.io/oauth"
type OAuthConfig struct {
ClientId string `mapstructure:"client_id"`
ClientSecret string `mapstructure:"client_secret"`
TokenType string `mapstructure:"token_type"`
AccessToken string `mapstructure:"access_token"`
RefreshToken string `mapstructure:"refresh_token"`
ExpiresIn float64 `mapstructure:"expires_in"`
Created string
DefaultOrg string
URL string
}
type ClientCredentials struct {
Config OAuthConfig
InsecureSSL bool
}
type Org struct {
Name string `json:"name"`
}
type OAuthResponse struct {
TokenType string `json:"token_type"`
AccessToken string `json:"access_token"`
RefreshToken string `json:"refresh_token"`
ExpiresIn float64 `json:"expires_in"`
Scope string `json:"scope"`
Orgs []Org `json:"orgs"`
}
func buildUrl(uri string, p string) (string, error) {
u, err := url.Parse(uri)
if err != nil {
return "", err
}
u.Path = path.Join(u.Path, p)
if !strings.HasSuffix(u.Path, "/") {
u.Path += "/"
}
return u.String(), nil
}
func (c *ClientCredentials) updateConfig(r OAuthResponse) {
c.Config.AccessToken = r.AccessToken
c.Config.RefreshToken = r.RefreshToken
c.Config.TokenType = r.TokenType
c.Config.ExpiresIn = r.ExpiresIn
c.Config.Created = time.Now().UTC().Format(time.RFC3339)
if len(r.Orgs) == 1 {
c.Config.DefaultOrg = r.Orgs[0].Name
}
}
// Perform a POST request.
func (c *ClientCredentials) post(uri string, data url.Values) (*[]byte, error) {
client := &http.Client{
Transport: &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: c.InsecureSSL,
},
},
}
res, err := client.PostForm(uri, data)
if err != nil {
return nil, err
}
body, err := io.ReadAll(res.Body)
if err != nil {
return nil, err
}
if res.StatusCode != 200 {
return nil, fmt.Errorf("Unable to retrieve credentials: HTTP_%d\n=%s", res.StatusCode, body)
}
return &body, nil
}
// IsExpired checks if the OAuth token is expired.
func (c *ClientCredentials) IsExpired() (bool, error) {
if c.Config.ExpiresIn != 0 && c.Config.Created != "" {
t, err := time.Parse(time.RFC3339, c.Config.Created)
if err != nil {
return false, fmt.Errorf("Error parsing oauth token creation date")
}
if time.Since(t).Seconds() > c.Config.ExpiresIn {
return true, nil
}
}
return false, nil
}
// HasRefreshToken checks if a refresh token is available.
func (c *ClientCredentials) HasRefreshToken() bool {
return c.Config.RefreshToken != ""
}
// Refresh performs a refresh of the token.
func (c *ClientCredentials) Refresh() error {
logrus.Debug("Refreshing client_credentials oauth token")
u, err := buildUrl(c.Config.URL, "token")
if err != nil {
return err
}
logrus.Debug("Refreshing oauth token via URL ", u)
v := url.Values{}
v.Set("grant_type", "refresh_token")
v.Set("client_id", c.Config.ClientId)
v.Set("client_secret", c.Config.ClientSecret)
v.Set("refresh_token", c.Config.RefreshToken)
data, err := c.post(u, v)
if err != nil {
return err
}
t := OAuthResponse{}
err = json.Unmarshal(*data, &t)
if err != nil {
return err
}
c.updateConfig(t)
return nil
}
// Get a new token.
func (c *ClientCredentials) Get() error {
logrus.Debug("Getting oauth token via client_credentials grant")
u, err := buildUrl(c.Config.URL, "token")
if err != nil {
return err
}
logrus.Debug("Getting oauth token via URL ", u)
v := url.Values{}
v.Set("grant_type", "client_credentials")
v.Set("client_id", c.Config.ClientId)
v.Set("client_secret", c.Config.ClientSecret)
data, err := c.post(u, v)
if err != nil {
return err
}
t := OAuthResponse{}
err = json.Unmarshal(*data, &t)
if err != nil {
return err
}
c.updateConfig(t)
return nil
}
func NewClientCredentials(c OAuthConfig) ClientCredentials {
if len(c.URL) == 0 {
c.URL = OauthURL
}
return ClientCredentials{c, false}
}