Set mail crypt private password with OAUTH?

Mon Jan 31 19:13:47 UTC 2022

The main goal was to get the possibility of authorization for local 
mailboxes both through standard password authentication and through 
Google OAUTH.
The final solution turned out to be simple and the one that I tried to 
use from the very beginning, namely to get the password to decode the 
encryption keys from passdb to userdb. The problem was in the name of 
the corresponding variable, which for use in passdb should be written as 
userdb_mail_crypt_private_password, and for userdb already without a 
prefix as mail_crypt_private_password.
As a result, we have the following working configuration.

1. dovecot.conf

auth_mechanisms = plain login oauthbearer xoauth2

passdb {
   driver = sql
   args = /etc/dovecot/dovecot-sql.conf.ext
}

passdb {
   driver = oauth2
   mechanisms = xoauth2 oauthbearer
   result_success = return-ok
   args = /etc/dovecot/dovecot-oauth2.conf.ext
}

userdb {
   driver = sql
   args = /etc/dovecot/dovecot-sql.conf.ext
}

2. dovecot-oauth2.conf.ext

tokeninfo_url = 
https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=
introspection_url = https://www.googleapis.com/oauth2/v2/userinfo
username_attribute = email
tls_ca_cert_file = /etc/ssl/certs/ca-certificates.crt

3. dovecot-sql.conf.ext

password_query = \
   SELECT username AS user, password, \
   150 AS userdb_uid, 8 AS userdb_gid \
   FROM mailbox WHERE username = '%u'
   AND active = '1'

user_query = \
   SELECT \
   CONCAT('/var/vmail/', LCASE(maildir)) AS home, \
   CONCAT('maildir:/var/vmail/', LCASE(maildir)) AS mail, \
   150 AS uid, 8 AS gid, concat('dirsize:storage=', quota) AS quota, \
   SHA2(CONCAT(username, random_key), 256) AS mail_crypt_private_password 
\
   FROM mailbox WHERE username = '%u'
   AND active = '1'

iterate_query = \
   SELECT username AS user FROM mailbox

John Stoffel писал(а) 2022-01-31 21:01:
>>>>>> "Aki" == Aki Tuomi <aki.tuomi at open-xchange.com> writes:
> 
> Max,
> It would be awesome if you could post a summary of what your setup is,
> what you were trying to accomplish, and the configuration you came up
> with after all this work with Aki and the rest of the team.
> 
> Digging through the entire chain would be a chore and while I've
> enjoyed reading it all, I've already forgotten what the original setup
> was you're were working on!
> 
> As a bonus, this writeup will help you in the future if you run into
> problems again.  :-)
> 
> John
> 
> 
> Aki> Ah. This is because you have a mistake in your userdb query:
> Aki>    SHA2(CONCAT(username, random_key), 256) AS
> Aki> userdb_mail_crypt_private_password \
> 
> Aki> should be
> Aki>    SHA2(CONCAT(username, random_key), 256) AS
> Aki>    mail_crypt_private_password \
> 
> Aki> userdb_ prefix should only be used in passdb **or** passwd-file.
> 
> Aki> Aki
> 
>>> On 31/01/2022 13:00 Max Kostikov <max at kostikov.co> wrote:
>>> 
>>> 
>>> With removed userdb_mail_crypt_private_password part in the
>>> password_query it doesn't work at all even with standard password
>>> authentication.
>>> 
>>> 
>>> Aki Tuomi писал(а) 2022-01-31 12:52:
>>> > Using oauth2 or not should make no difference if the key is loaded in
>>> > userdb. Can you check with mail_debug=yes to see that it gets loaded
>>> > even if you remove it from passdb sql?
>>> >
>>> > Aki
>>> >
>>> >> On 31/01/2022 12:41 Max Kostikov <max at kostikov.co> wrote:
>>> >>
>>> >>
>>> >> Correction. Mail crypt works fine when I'm logged with the regular
>>> >> password authentication
>>> >> but doesn't when OAUTH2 is used.
>>> >>
>>> >> Max Kostikov писал(а) 2022-01-31 12:30:
>>> >> > Yes, that's right.
>>> >> > I tried to get key with userdb before I wrote in the Dovecot list but
>>> >> > this doesn't work for me.
>>> >> > Yes, the decryption key is correct but for some reason it doesn't
>>> >> > applied when key decryption.
>>> >> >
>>> >> >
>>> >> > Aki Tuomi писал(а) 2022-01-31 12:09:
>>> >> >> In fact now that I looked through your configs one more, this is
>>> >> >> already what you are doing, except you are exporting the private key
>>> >> >> password in three different places.
>>> >> >>
>>> >> >> So basically, if you do `doveadm user foobar` it should already give
>>> >> >> you a correct key.
>>> >> >>
>>> >> >> You can see if the key is correct with `doveadm mailbox cryptokey
>>> >> >> export -u user -U`
>>> >> >>
>>> >> >> Aki
>>> >> >>
>>> >> >>> On 31/01/2022 12:03 Aki Tuomi <aki.tuomi at open-xchange.com> wrote:
>>> >> >>>
>>> >> >>>
>>> >> >>> Hgm. You have userdb lookups enabled, why not just move the entire
>>> >> >>> mail_crypt_private_password handling there instead of passdb? This
>>> >> >>> way it'll work with LMTP/LDA as well.
>>> >> >>>
>>> >> >>> So move all user related fields to the userdb lookup, and keep only
>>> >> >>> the authentication handling in passdb.
>>> >> >>>
>>> >> >>> In your configuration, passdb lookups are not done for LMTP/LDA etc.
>>> >> >>>
>>> >> >>> Aki
>>> >> >>>
>>> >> >>> > On 31/01/2022 12:00 Max Kostikov <max at kostikov.co> wrote:
>>> >> >>> >
>>> >> >>> >
>>> >> >>> > Unfortunately there are no "master out" entries in the log, but I have
>>> >> >>> > "userdb out"
>>> >> >>> >
>>> >> >>> > Jan 31 09:56:40 example.com dovecot: auth: Debug: master userdb out:
>>> >> >>> > USER#0111609564161#011max.kostikov at gmail.com#011home=/var/vmail/gmail.com/max.kostikov/#011mail=maildir:/var/vmail/gmail.com/max.kostikov/#011uid=150#011gid=8#011quota=dirsize:storage=0#011userdb_mail_crypt_private_password=<hidden>#011auth_mech=XOAUTH2#011auth_token=a8a38b3119780448ae96debd5687df75f5043378
>>> >> >>> >
>>> >> >>> >
>>> >> >>> > Aki Tuomi писал(а) 2022-01-31 11:47:
>>> >> >>> > > Was the field present in auth debug logs, it should be shown in the
>>> >> >>> > > "master out" log line and also it should be visible on mail_debug=yes
>>> >> >>> > > logs as `plugin/mail_crypt_private_key_password`.
>>> >> >>> > >
>>> >> >>> > > Aki
>>> >> >>> > >
>>> >> >>> > >> On 31/01/2022 11:40 Max Kostikov <max at kostikov.co> wrote:
>>> >> >>> > >>
>>> >> >>> > >>
>>> >> >>> > >> Unfortunatelly I still get decryption error with "Password not
>>> >> >>> > >> available"
>>> >> >>> > >>
>>> >> >>> > >> ...
>>> >> >>> > >> Jan 31 09:39:03 dev-message-portal-08.healthycareservice.com dovecot:
>>> >> >>> > >> imap(max.kostikov at gmail.com)<22267><59cRjt3Wbtx/AAAB>: Error: Mailbox
>>> >> >>> > >> INBOX: UID=1: read() failed:
>>> >> >>> > >> read(/var/vmail/gmail.com/max.kostikov/cur/1643481212.M353350P24555.dev-message-portal-08.healthycareservice.com,S=2140,W=2193:2,S)
>>> >> >>> > >> failed: Private key not available: Cannot decrypt key
>>> >> >>> > >> 34255c3a029dc86ba4f07fa9bae2e87e4254de1d582f220a99b46f20bd382870:
>>> >> >>> > >> Cannot
>>> >> >>> > >> decrypt key
>>> >> >>> > >> 98ae0f998f9139ebe20a97de77f162dcdeed496e38c9b5910186f999f3ef66c8:
>>> >> >>> > >> Password not available
>>> >> >>> > >> Jan 31 09:39:03 dev-message-portal-08.healthycareservice.com dovecot:
>>> >> >>> > >> imap(max.kostikov at gmail.com)<22267><59cRjt3Wbtx/AAAB>: Disconnected:
>>> >> >>> > >> FETCH failed: Mailbox INBOX: UID=1: read() failed:
>>> >> >>> > >> read(/var/vmail/gmail.com/max.kostikov/cur/1643481212.M353350P24555.dev-message-portal-08.healthycareservice.com,S=2140,W=2193:2,S)
>>> >> >>> > >> failed: Private key not available: Cannot decrypt key
>>> >> >>> > >> 34255c3a029dc86ba4f07fa9bae2e87e4254de1d582f220a99b46f20bd382870:
>>> >> >>> > >> Cannot
>>> >> >>> > >> decrypt key
>>> >> >>> > >> 98ae0f998f9139ebe20a97de77f162dcdeed496e38c9b5910186f999f3ef66c8:
>>> >> >>> > >> Password not available in=463 out=1872 deleted=0 expunged=0 trashed=0
>>> >> >>> > >> hdr_count=1 hdr_bytes=115 body_count=0 body_bytes=0
>>> >> >>> > >>
>>> >> >>> > >>
>>> >> >>> > >> Aki Tuomi писал(а) 2022-01-31 11:33:
>>> >> >>> > >> > try adding
>>> >> >>> > >> >
>>> >> >>> > >> > result_success = continue-ok
>>> >> >>> > >> >
>>> >> >>> > >> > to the oauth2 database.
>>> >> >>> > >> >
>>> >> >>> > >> > Aki
>>> >> >>> > >> >
>>> >> >>> > >> >> On 31/01/2022 11:27 Max Kostikov <max at kostikov.co> wrote:
>>> >> >>> > >> >>
>>> >> >>> > >> >>
>>> >> >>> > >> >> Aki, thanks for your hint.
>>> >> >>> > >> >> Unfortunatelly I can't get this work.
>>> >> >>> > >> >> Here is my configuration.
>>> >> >>> > >> >>
>>> >> >>> > >> >> auth_mechanisms = $auth_mechanisms oauthbearer xoauth2
>>> >> >>> > >> >> passdb {
>>> >> >>> > >> >>    driver = oauth2
>>> >> >>> > >> >>    mechanisms = xoauth2 oauthbearer
>>> >> >>> > >> >>    args = /etc/dovecot/dovecot-oauth2.conf.ext
>>> >> >>> > >> >> }
>>> >> >>> > >> >> passdb {
>>> >> >>> > >> >>    driver = sql
>>> >> >>> > >> >>    skip = unauthenticated
>>> >> >>> > >> >>    args = /etc/dovecot/dovecot-sql-encryption.conf.ext
>>> >> >>> > >> >> }
>>> >> >>> > >> >> passdb {
>>> >> >>> > >> >>    skip = authenticated
>>> >> >>> > >> >>    driver = sql
>>> >> >>> > >> >>    args = /etc/dovecot/dovecot-sql.conf.ext
>>> >> >>> > >> >> }
>>> >> >>> > >> >> userdb {
>>> >> >>> > >> >>    driver = sql
>>> >> >>> > >> >>    args = /etc/dovecot/dovecot-sql.conf.ext
>>> >> >>> > >> >> }
>>> >> >>> > >> >>
>>> >> >>> > >> >> * In the dovecot-oauth2.conf.ext I have typical Google configuration.
>>> >> >>> > >> >>
>>> >> >>> > >> >> * dovecot-sql-encryption.conf.ext contains only SQL query for
>>> >> >>> > >> >> password:
>>> >> >>> > >> >>
>>> >> >>> > >> >> password_query = \
>>> >> >>> > >> >>    SELECT \
>>> >> >>> > >> >>    150 AS userdb_uid, 8 AS userdb_gid, \
>>> >> >>> > >> >>    SHA2(CONCAT(username, random_key), 256) AS
>>> >> >>> > >> >> userdb_mail_crypt_private_password, \
>>> >> >>> > >> >>    'Y' AS noauthenticate \
>>> >> >>> > >> >>    FROM mailbox WHERE username = '%u'
>>> >> >>> > >> >>
>>> >> >>> > >> >> * dovecot-sql.conf.ext contains normal password authentication
>>> >> >>> > >> >> queries:
>>> >> >>> > >> >>
>>> >> >>> > >> >> password_query = \
>>> >> >>> > >> >>    SELECT username AS user, password, \
>>> >> >>> > >> >>    150 AS userdb_uid, 8 AS userdb_gid, \
>>> >> >>> > >> >>    SHA2(CONCAT(username, random_key), 256) AS
>>> >> >>> > >> >> userdb_mail_crypt_private_password \
>>> >> >>> > >> >>    FROM mailbox WHERE username = '%u'
>>> >> >>> > >> >>    AND active = '1'
>>> >> >>> > >> >>
>>> >> >>> > >> >> user_query = \
>>> >> >>> > >> >>    SELECT \
>>> >> >>> > >> >>    CONCAT('/var/vmail/', LCASE(maildir)) AS home, \
>>> >> >>> > >> >>    CONCAT('maildir:/var/vmail/', LCASE(maildir)) AS mail, \
>>> >> >>> > >> >>    150 AS uid, 8 AS gid, concat('dirsize:storage=', quota) AS quota, \
>>> >> >>> > >> >>    SHA2(CONCAT(username, random_key), 256) AS
>>> >> >>> > >> >> userdb_mail_crypt_private_password \
>>> >> >>> > >> >>    FROM mailbox WHERE username = '%u'
>>> >> >>> > >> >>    AND active = '1'
>>> >> >>> > >> >>
>>> >> >>> > >> >> iterate_query = \
>>> >> >>> > >> >>    SELECT username AS user FROM mailbox
>>> >> >>> > >> >>
>>> >> >>> > >> >> It seems now dovecot-sql-encryption.conf.ext is not invoked
>>> >> >>> > >> >>
>>> >> >>> > >> >> Jan 31 09:11:45 example.com dovecot: imap-login: Login:
>>> >> >>> > >> >> user=<max.kostikov at gmail.com>, method=XOAUTH2, rip=127.0.0.1,
>>> >> >>> > >> >> lip=127.0.0.1, mpid=22615, TLS, session=<XtdzLN3WnMl/AAAB>
>>> >> >>> > >> >> Jan 31 09:11:45 example.com dovecot: auth: Debug: client in:
>>> >> >>> > >> >> AUTH#0111#011XOAUTH2#011service=imap#011secured=tls#011session=56F7LN3Wnsl/AAAB#011lip=127.0.0.1#011rip=127.0.0.1#011lport=143#011rport=51614#011local_name=example.com#011resp=<hidden>
>>> >> >>> > >> >> Jan 31 09:11:45 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Performing passdb
>>> >> >>> > >> >> lookup
>>> >> >>> > >> >> Jan 31 09:11:45 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Making token
>>> >> >>> > >> >> validation lookup to
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=
>>> >> >>> > >> >> Jan 31 09:11:45 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> queue
>>> >> >>> > >> >> https://www.googleapis.com:443: Using existing connection to
>>> >> >>> > >> >> 172.253.63.95:443 (SSL=www.googleapis.com) (1 requests pending)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]:
>>> >> >>> > >> >> Submitted (requests left=1)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]: peer
>>> >> >>> > >> >> 172.253.63.95:443: Using 1 idle connections to handle 1 requests (1
>>> >> >>> > >> >> total connections ready)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> queue
>>> >> >>> > >> >> https://www.googleapis.com:443: Connection to peer 172.253.63.95:443
>>> >> >>> > >> >> claimed request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: Claimed request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]:
>>> >> >>> > >> >> Sent header
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]: peer
>>> >> >>> > >> >> 172.253.63.95:443: No more requests to service for this peer (1
>>> >> >>> > >> >> connections exist, 0 pending)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: Got 200 response for request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]:
>>> >> >>> > >> >> OK (took 20 ms + 0 ms in queue)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Token validation
>>> >> >>> > >> >> succeeded
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> azp
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> aud
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> sub
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> scope
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> exp
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> expires_in
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> email
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> email_verified
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> access_type
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Making
>>> >> >>> > >> >> introspection
>>> >> >>> > >> >> request to https://www.googleapis.com/oauth2/v2/userinfo
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> queue
>>> >> >>> > >> >> https://www.googleapis.com:443: Using existing connection to
>>> >> >>> > >> >> 172.253.63.95:443 (SSL=www.googleapis.com) (1 requests pending)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req10: GET https://www.googleapis.com/oauth2/v2/userinfo]:
>>> >> >>> > >> >> Submitted (requests left=2)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: Response payload stream destroyed (0 ms after
>>> >> >>> > >> >> initial response)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]:
>>> >> >>> > >> >> Finished
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> queue
>>> >> >>> > >> >> https://www.googleapis.com:443: Dropping request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req9: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v3/tokeninfo?access_token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI]:
>>> >> >>> > >> >> Free (requests left=2)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]: peer
>>> >> >>> > >> >> 172.253.63.95:443: Using 1 idle connections to handle 1 requests (1
>>> >> >>> > >> >> total connections ready)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> queue
>>> >> >>> > >> >> https://www.googleapis.com:443: Connection to peer 172.253.63.95:443
>>> >> >>> > >> >> claimed request [Req10: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v2/userinfo]
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: Claimed request [Req10: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v2/userinfo]
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req10: GET https://www.googleapis.com/oauth2/v2/userinfo]:
>>> >> >>> > >> >> Sent
>>> >> >>> > >> >> header
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]: peer
>>> >> >>> > >> >> 172.253.63.95:443: No more requests to service for this peer (1
>>> >> >>> > >> >> connections exist, 0 pending)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: Got 200 response for request [Req10: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v2/userinfo]: OK (took 57 ms + 0 ms
>>> >> >>> > >> >> in
>>> >> >>> > >> >> queue)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Introspection
>>> >> >>> > >> >> succeeded
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> id
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> email
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> verified_email
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> name
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> given_name
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> family_name
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> picture
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Processing field
>>> >> >>> > >> >> locale
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> oauth2(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Finished passdb
>>> >> >>> > >> >> lookup
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> auth(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Auth request
>>> >> >>> > >> >> finished
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: client passdb out:
>>> >> >>> > >> >> OK#0111#011user=foo at gmail.com#011token=ya29.A0ARrdaM_UsPVyxGVJ2aSHPS0D7gnONiuBcEF5CyUwFhnd6nq94c4T1PAWQeUE5IItCIwLb90QpkNLduHD8_vkeka7j6m574SP3gbg114lopTrmPZmHBIpDzaj2w-JqlV0bkFCT7jKqd5UHWXrRIAdqS0ksDCI
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: Response payload stream destroyed (0 ms after
>>> >> >>> > >> >> initial response)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req10: GET https://www.googleapis.com/oauth2/v2/userinfo]:
>>> >> >>> > >> >> Finished
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> queue
>>> >> >>> > >> >> https://www.googleapis.com:443: Dropping request [Req10: GET
>>> >> >>> > >> >> https://www.googleapis.com/oauth2/v2/userinfo]
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: host
>>> >> >>> > >> >> www.googleapis.com: Host is idle (timeout = 1786062 msecs)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]:
>>> >> >>> > >> >> request [Req10: GET https://www.googleapis.com/oauth2/v2/userinfo]:
>>> >> >>> > >> >> Free
>>> >> >>> > >> >> (requests left=1)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client[1]: peer
>>> >> >>> > >> >> 172.253.63.95:443: No requests to service for this peer (1 connections
>>> >> >>> > >> >> exist, 0 pending)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: http-client: conn
>>> >> >>> > >> >> 172.253.63.95:443 [1]: No more requests queued; going idle (timeout =
>>> >> >>> > >> >> 60000 msecs)
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: master in:
>>> >> >>> > >> >> REQUEST#0113880255489#01122604#0111#0117acd1216a7041ddbdf7b563a2bc10dd1#011session_pid=22629#011request_auth_token
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> sql(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Performing userdb
>>> >> >>> > >> >> lookup
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth-worker(22005): Debug: conn
>>> >> >>> > >> >> unix:auth-worker (pid=22001,uid=113): auth-worker<19>: Handling USER
>>> >> >>> > >> >> request
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth-worker(22005): Debug: conn
>>> >> >>> > >> >> unix:auth-worker (pid=22001,uid=113): auth-worker<19>:
>>> >> >>> > >> >> sql(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Performing userdb
>>> >> >>> > >> >> lookup
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth-worker(22005): Debug: conn
>>> >> >>> > >> >> unix:auth-worker (pid=22001,uid=113): auth-worker<19>:
>>> >> >>> > >> >> sql(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): SELECT
>>> >> >>> > >> >> CONCAT('/var/vmail/', LCASE(maildir)) AS home,
>>> >> >>> > >> >> CONCAT('maildir:/var/vmail/', LCASE(maildir)) AS mail, 150 AS uid, 8
>>> >> >>> > >> >> AS
>>> >> >>> > >> >> gid, concat('dirsize:storage=', quota) AS quota, SHA2(CONCAT(username,
>>> >> >>> > >> >> random_key), 256) AS userdb_mail_crypt_private_password FROM mailbox
>>> >> >>> > >> >> WHERE username = 'foo at gmail.com'
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth-worker(22005): Debug:
>>> >> >>> > >> >> mysql(localhost): Finished query 'SELECT CONCAT('/var/vmail/',
>>> >> >>> > >> >> LCASE(maildir)) AS home, CONCAT('maildir:/var/vmail/', LCASE(maildir))
>>> >> >>> > >> >> AS mail, 150 AS uid, 8 AS gid, concat('dirsize:storage=', quota) AS
>>> >> >>> > >> >> quota, SHA2(CONCAT(username, random_key), 256) AS
>>> >> >>> > >> >> userdb_mail_crypt_private_password FROM mailbox WHERE username =
>>> >> >>> > >> >> 'foo at gmail.com'' in 8 msecs
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth-worker(22005): Debug: conn
>>> >> >>> > >> >> unix:auth-worker (pid=22001,uid=113): auth-worker<19>:
>>> >> >>> > >> >> sql(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Finished userdb
>>> >> >>> > >> >> lookup
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth-worker(22005): Debug: conn
>>> >> >>> > >> >> unix:auth-worker (pid=22001,uid=113): auth-worker<19>: Finished
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug:
>>> >> >>> > >> >> sql(foo at gmail.com,127.0.0.1,<56F7LN3Wnsl/AAAB>): Finished userdb
>>> >> >>> > >> >> lookup
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: auth: Debug: master userdb out:
>>> >> >>> > >> >> USER#0113880255489#011foo at gmail.com#011home=/var/vmail/gmail.com/max.kostikov/#011mail=maildir:/var/vmail/gmail.com/max.kostikov/#011uid=150#011gid=8#011quota=dirsize:storage=0#011userdb_mail_crypt_private_password=<hidden>#011auth_mech=XOAUTH2#011auth_token=cd1adb77645bc681e152d945b5617ef602b29fb7
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot: imap-login: Login:
>>> >> >>> > >> >> user=<foo at gmail.com>, method=XOAUTH2, rip=127.0.0.1, lip=127.0.0.1,
>>> >> >>> > >> >> mpid=22629, TLS, session=<56F7LN3Wnsl/AAAB>
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot:
>>> >> >>> > >> >> imap(foo at gmail.com)<22615><XtdzLN3WnMl/AAAB>: Error: Mailbox INBOX:
>>> >> >>> > >> >> UID=1: read() failed:
>>> >> >>> > >> >> read(/var/vmail/gmail.com/max.kostikov/cur/1643481212.M353350P24555.example.com,S=2140,W=2193:2,S)
>>> >> >>> > >> >> failed: Private key not available: Cannot decrypt key
>>> >> >>> > >> >> 34255c3a029dc86ba4f07fa9bae2e87e4254de1d582f220a99b46f20bd382870:
>>> >> >>> > >> >> Cannot
>>> >> >>> > >> >> decrypt key
>>> >> >>> > >> >> 98ae0f998f9139ebe20a97de77f162dcdeed496e38c9b5910186f999f3ef66c8:
>>> >> >>> > >> >> Password not available (FETCH BODY[HEADER])
>>> >> >>> > >> >> Jan 31 09:11:46 example.com dovecot:
>>> >> >>> > >> >> imap(foo at gmail.com)<22615><XtdzLN3WnMl/AAAB>: Disconnected: FETCH
>>> >> >>> > >> >> read()
>>> >> >>> > >> >> failed in=57 out=800 deleted=0 expunged=0 trashed=0 hdr_count=1
>>> >> >>> > >> >> hdr_bytes=0 body_count=0 body_bytes=0
>>> >> >>> > >> >>
>>> >> >>> > >> >> I've tried to add
>>> >> >>> > >> >>
>>> >> >>> > >> >> pass_attrs =
>>> >> >>> > >> >> userdb_mail_crypt_private_password=%{userdb:userdb_mail_crypt_private_password}
>>> >> >>> > >> >>
>>> >> >>> > >> >> into the pass_attrs =
>>> >> >>> > >> >> userdb_mail_crypt_private_password=%{userdb:mail_crypt_private_password}
>>> >> >>> > >> >> but it looks like no correct key decrypt password passed
>>> >> >>> > >> >>
>>> >> >>> > >> >> ...
>>> >> >>> > >> >> Jan 31 09:10:49 example.com dovecot:
>>> >> >>> > >> >> imap(foo at gmail.com)<20613><HVcHKd3W9sh/AAAB>: Error: Mailbox INBOX:
>>> >> >>> > >> >> UID=1: read() failed:
>>> >> >>> > >> >> read(/var/vmail/gmail.com/max.kostikov/cur/1643481212.M353350P24555.example.com,S=2140,W=2193:2,S)
>>> >> >>> > >> >> failed: Private key not available: Cannot decrypt key
>>> >> >>> > >> >> 34255c3a029dc86ba4f07fa9bae2e87e4254de1d582f220a99b46f20bd382870:
>>> >> >>> > >> >> error:03070068:bignum routines:BN_mpi2bn:encoding error (FETCH
>>> >> >>> > >> >> BODY[HEADER])
>>> >> >>> > >> >> Jan 31 09:10:50 example.com dovecot:
>>> >> >>> > >> >> imap(foo at gmail.com)<20631><cuIWKd3W+Mh/AAAB>: Error: Mailbox INBOX:
>>> >> >>> > >> >> UID=1: read() failed:
>>> >> >>> > >> >> read(/var/vmail/gmail.com/max.kostikov/cur/1643481212.M353350P24555.example.com,S=2140,W=2193:2,S)
>>> >> >>> > >> >> failed: Private key not available: Cannot decrypt key
>>> >> >>> > >> >> 34255c3a029dc86ba4f07fa9bae2e87e4254de1d582f220a99b46f20bd382870:
>>> >> >>> > >> >> error:03070068:bignum routines:BN_mpi2bn:encoding error
>>> >> >>> > >> >>
>>> >> >>> > >> >>
>>> >> >>> > >> >> Aki Tuomi писал(а) 2022-01-31 08:34:
>>> >> >>> > >> >> >> On 28/01/2022 21:27 Max Kostikov <max at kostikov.co> wrote:
>>> >> >>> > >> >> >>
>>> >> >>> > >> >> >>
>>> >> >>> > >> >> >> We currently use Dovecot and mailbox encryption via the
>>> >> >>> > >> >> >> mail-crypt-plugin.
>>> >> >>> > >> >> >> With standard password authentication, we set the value of the
>>> >> >>> > >> >> >> individual
>>> >> >>> > >> >> >> password to encrypt the contents of the
>>> >> >>> > >> >> >> userdb_mail_crypt_private_password
>>> >> >>> > >> >> >> mailbox in the SQL query.
>>> >> >>> > >> >> >> Is it possible to set the userdb_mail_crypt_private_password value
>>> >> >>> > >> >> >> when
>>> >> >>> > >> >> >> authenticating via OAUTH2 ?
>>> >> >>> > >> >> >>
>>> >> >>> > >> >> >> --
>>> >> >>> > >> >> >> Best regards,
>>> >> >>> > >> >> >> Max Kostikov
>>> >> >>> > >> >> >
>>> >> >>> > >> >> > You probably want to split your passdb drivers into two, one which
>>> >> >>> > >> >> > does the authentication and second which populates the private
>>> >> >>> > >> >> > password value. This way it should work correctly on both cases.
>>> >> >>> > >> >> >
>>> >> >>> > >> >> > passdb {
>>> >> >>> > >> >> >  driver = sql
>>> >> >>> > >> >> >  skip = unauthenticated
>>> >> >>> > >> >> >  ...
>>> >> >>> > >> >> > }
>>> >> >>> > >> >> >
>>> >> >>> > >> >> > and ensure your return in this sql query `'Y' as noauthenticate'`
>>> >> >>> > >> >> >
>>> >> >>> > >> >> > Aki
>>> >> >>> > >> >>
>>> >> >>> > >> >> --
>>> >> >>> > >> >> Best regards,
>>> >> >>> > >> >> Max Kostikov
>>> >> >>> > >> >>
>>> >> >>> > >> >> W: https://kostikov.co | E: max at kostikov.co | T: +7(952)7927000
>>> >> >>> > >>
>>> >> >>> > >> --
>>> >> >>> > >> Best regards,
>>> >> >>> > >> Max Kostikov
>>> >> >>> > >>
>>> >> >>> > >> W: https://kostikov.co | E: max at kostikov.co | T: +7(952)7927000
>>> >> >>> >
>>> >> >>> > --
>>> >> >>> > Best regards,
>>> >> >>> > Max Kostikov
>>> >> >>> >
>>> >> >>> > W: https://kostikov.co | E: max at kostikov.co | T: +7(952)7927000
>>> >>
>>> >> --
>>> >> Best regards,
>>> >> Max Kostikov
>>> >>
>>> >> W: https://kostikov.co | E: max at kostikov.co | T: +7(952)7927000
>>> 
>>> --
>>> Best regards,
>>> Max Kostikov
>>> 
>>> W: https://kostikov.co | E: max at kostikov.co | T: +7(952)7927000

-- 
Best regards,
Max Kostikov

W: https://kostikov.co | E: max at kostikov.co | T: +7(952)7927000