有人有使用libEtPan连接到GMail账户使用OAuth的示例代码或明确的说明吗？我找不到任何相关资料。
GMail中OAuth的详细信息在此处： http://code.google.com/apis/gmail/oauth/
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0
libetpan的头文件中包含一些文档，对于IMAP，它位于https://github.com/dinhviethoa/libetpan/blob/master/src/low-level/imap/mailimap_oauth2.h。
/*
mailimap_oauth2_authenticate()
Authenticates the client using using an oauth2 token.
To gather a deeper understanding of the OAuth2 aunthentication
process refer to: https://developers.google.com/gmail/xoauth2_protocol
For a quick start you may follow this brief set of steps:
1. Set up a profile for your app in the Google
API Console: https://code.google.com/apis/console
2. With your recently obtained client_id and secret
load the following URL (everything goes ina single line):
https://accounts.google.com/o/oauth2/auth?client_id=[YOUR_CLIENT_ID]&
redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob&
response_type=code&scope=https%3A%2F%2Fmail.google.com%2F%20email&
&access_type=offline
3. The user most follow instructions to authorize application access
to Gmail.
4. After the user hits the "Accept" button it will be redirected to another
page where the access token will be issued.
5. Now from the app we need and authorization token, to get one we issue a POST request
the following URL: https://accounts.google.com/o/oauth2/token using these parameters:
client_id: This is the client id we got from step 1
client_secret: Client secret as we got it from step 1
code: This is the code we received in step 4
redirect_uri: This is a redirect URI where the access token will be sent, for non
web applications this is usually urn:ietf:wg:oauth:2.0:oob (as we got from step 1)
grant_type: Always use the authorization_code parameter to retrieve an access and refresh tokens
6. After step 5 completes we receive a JSON object similar to:
{
"access_token":"1/fFAGRNJru1FTz70BzhT3Zg",
"refresh_token":"1/fFAGRNJrufoiWEGIWEFJFJF",
"expires_in":3920,
"token_type":"Bearer"
}
The above output gives us the access_token, now we need to also retrieve the user's e-mail,
to do that we need to perform an HTTP GET request to Google's UserInfo API using this URL:
https://www.googleapis.com/oauth2/v1/userinfo?access_token=[YOUR_ACCESS_TOKEN]
this will return the following JSON output:
{
"id": "00000000000002222220000000",
"email": "email@example.com",
"verified_email": true
}
@param session IMAP session
@param auth_user Authentication user (tipically an e-mail address, depends on server)
@param access_token OAuth2 access token
@return the return code is one of MAILIMAP_ERROR_XXX or
MAILIMAP_NO_ERROR codes
*/
LIBETPAN_EXPORT
int mailimap_oauth2_authenticate(mailimap * session, const char * auth_user,
const char * access_token);
LIBETPAN_EXPORT
int mailimap_has_xoauth2(mailimap * session);
我自己还没有尝试过，但是当我开始实施时，我会发布实现链接。
2021年3月更新
我终于在我的电子邮件客户端nmail中实现了对Google OAuth 2.0的支持。提交可以在这里查看，但基本上我最终在一个单独的外部脚本中执行了步骤2-6，因为libetpan不会为我们生成/刷新令牌。令牌处理非常简单 - 例如，请参见oauth2nmail.py。
- d99kris
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