49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package sasl
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import (
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"encoding/json"
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"fmt"
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)
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// The XOAUTH2 mechanism name.
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const Xoauth2 = "XOAUTH2"
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// An XOAUTH2 error.
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type Xoauth2Error struct {
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Status string `json:"status"`
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Schemes string `json:"schemes"`
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Scope string `json:"scope"`
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}
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// Implements error.
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func (err *Xoauth2Error) Error() string {
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return fmt.Sprintf("XOAUTH2 authentication error (%v)", err.Status)
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}
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type xoauth2Client struct {
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Username string
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Token string
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}
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func (a *xoauth2Client) Start() (mech string, ir []byte, err error) {
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mech = Xoauth2
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ir = []byte("user=" + a.Username + "\x01auth=Bearer " + a.Token + "\x01\x01")
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return
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}
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func (a *xoauth2Client) Next(challenge []byte) ([]byte, error) {
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// Server sent an error response
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xoauth2Err := &Xoauth2Error{}
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if err := json.Unmarshal(challenge, xoauth2Err); err != nil {
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return nil, err
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} else {
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return nil, xoauth2Err
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}
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}
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// An implementation of the XOAUTH2 authentication mechanism, as
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// described in https://developers.google.com/gmail/xoauth2_protocol.
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func NewXoauth2Client(username, token string) Client {
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return &xoauth2Client{username, token}
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}
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