Hi all,

currently, when the authentication to a server fails, and if the user decided 
to remember the password, the password is kept, and the next authentication 
attempt will again fail.

Attached is a patch which fixes this behaviour by clearing the respective 
password for the following conditions:
- SMTP: when the server replies with a 534 (Authentication mechanism is too 
weak) or 535 (Authentication credentials invalid) status code (see RFC 4954, 
Sect. 6)
- POP3: when any error occurs during the authentication phase, as POP3 has no 
standardised codes indicating the status as for SMTP
- user certificate private key: when the key decryption fails

Please note that this patch goes on top of the following pending patches:
* “password dialogue improvements”, submitted on November 4th
* “Fix broken IMAP special folders & other migration issues”, submitted on 
November 5th

As always, any comment is welcome!

Cheers,
Albrecht.

---
Patch details:
- libbalsa/mailbox_pop3.c, libbalsa/send.c: clear appropriate password when 
libnetclient reports an authentication failure (SMTP, POP), or could not 
decrypt a user certificate's private key
- libnetclient/net-client-pop.[ch]: report auth failure if the server reports 
any error in the authentication phase (AUTH, APOP, USER/PASS); fix nagging by 
Flexelint
- libnetclient/net-client-smtp.[ch]: report auth failure if the server replies 
with status codes 534 or 535; fix nagging by Flexelint
- libnetclient/net-client.[ch]: report a certificate key decryption error if 
the passphrase is wrong

Attachment: clear_password_on_authfail.diff.bz2
Description: application/bzip

Attachment: pgpCmQy162RCs.pgp
Description: PGP signature

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