forked from TrueCloudLab/lego
75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
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package vegadns2client
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import (
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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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"log"
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"net/http"
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"net/url"
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"strings"
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"time"
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)
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// Token - struct to hold token information
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type Token struct {
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Token string `json:"access_token"`
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TokenType string `json:"token_type"`
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ExpiresIn int `json:"expires_in"`
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ExpiresAt time.Time
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}
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func (t Token) valid() error {
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if time.Now().UTC().After(t.ExpiresAt) {
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return errors.New("Token Expired")
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}
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return nil
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}
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func (vega *VegaDNSClient) getBearer() string {
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if vega.token.valid() != nil {
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vega.getAuthToken()
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}
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return vega.token.formatBearer()
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}
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func (t Token) formatBearer() string {
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return fmt.Sprintf("Bearer %s", t.Token)
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}
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func (vega *VegaDNSClient) getAuthToken() {
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tokenEndpoint := vega.getURL("token")
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v := url.Values{}
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v.Set("grant_type", "client_credentials")
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req, err := http.NewRequest("POST", tokenEndpoint, strings.NewReader(v.Encode()))
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if err != nil {
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log.Fatalf("Error forming POST to getAuthToken: %s", err)
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}
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req.SetBasicAuth(vega.APIKey, vega.APISecret)
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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issueTime := time.Now().UTC()
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resp, err := vega.client.Do(req)
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if err != nil {
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log.Fatalf("Error sending POST to getAuthToken: %s", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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log.Fatalf("Error reading response from POST to getAuthToken: %s", err)
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}
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if resp.StatusCode != http.StatusOK {
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log.Fatalf("Got bad answer from VegaDNS on getAuthToken. Code: %d. Message: %s", resp.StatusCode, string(body))
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}
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if err := json.Unmarshal(body, &vega.token); err != nil {
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log.Fatalf("Error unmarshalling body of POST to getAuthToken: %s", err)
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}
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if vega.token.TokenType != "bearer" {
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log.Fatal("We don't support anything except bearer tokens")
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}
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vega.token.ExpiresAt = issueTime.Add(time.Duration(vega.token.ExpiresIn) * time.Second)
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}
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