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[patch] Fix for returning NULL values in SQL dict lookups
by NederHost/Sebastiaan Hoogeveen 29 Jun '16

29 Jun '16

Hi, I noticed a bug doing dict lookups on an SQLite database which had NULL values in its columns; a segmentation fault occurred, probably due to a null pointer dereference in str_tabescape. The problem is that sqlite3_column_text returns a null pointer for column values which are (SQL) NULL. It seems the other database drivers do something similar. The following patch makes the dict server check for null pointers and return a 'not found' reply in those cases (I changed the order around in the decision tree to avoid having to repeat return values): diff -Naur dovecot-2.2.24/src/dict/dict-commands.c dovecot-2.2.24-patched/src/dict/dict-commands.c --- dovecot-2.2.24/src/dict/dict-commands.c 2016-04-26 15:01:20.000000000 +0200 +++ dovecot-2.2.24-patched/src/dict/dict-commands.c 2016-05-11 22:04:06.000000000 +0200 @@ -83,14 +83,14 @@ { struct dict_connection_cmd *cmd = context; - if (result->ret > 0) { + if (result->ret > 0 && result->value) { cmd->reply = i_strdup_printf("%c%s\n", DICT_PROTOCOL_REPLY_OK, str_tabescape(result->value)); - } else if (result->ret == 0) { - cmd->reply = i_strdup_printf("%c\n", DICT_PROTOCOL_REPLY_NOTFOUND); - } else { + } else if (result->ret < 0) { i_error("%s", result->error); cmd->reply = i_strdup_printf("%c\n", DICT_PROTOCOL_REPLY_FAIL); + } else { + cmd->reply = i_strdup_printf("%c\n", DICT_PROTOCOL_REPLY_NOTFOUND); } dict_connection_cmds_flush(cmd->conn); } Kind regards, -- Sebastiaan Hoogeveen NederHost https://www.nederhost.nl/ KvK: 34099781

2 1

mail-search backtrace
by Hugh Bragg 29 Jun '16

29 Jun '16

I'm repeatedly getting this error: Apr 07 04:37:27 imap(mymail@address): Panic: file mail-search.c: line 84 (mail_search_arg_init): assertion failed: (arg->initialized.keywords == NULL) Apr 07 04:37:27 imap(mymail@address): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0x827c2) [0x7fcb7f65e7c2] -> /usr/lib64/dovecot/libdovecot.so.0(+0x828ad) [0x7fcb7f65e8ad] -> /usr/lib64/dov ecot/libdovecot.so.0(i_fatal+0) [0x7fcb7f605b01] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mail_search_arg_init+0x228) [0x7fcb7f91a328] -> /usr/lib64/dovecot/libdovecot-storage.so.0(index_search_result_updat e_flags+0x100) [0x7fcb7f98e470] -> /usr/lib64/dovecot/libdovecot-storage.so.0(index_sync_search_results_update+0x52) [0x7fcb7f9983e2] -> /usr/lib64/dovecot/libdovecot-storage.so.0(index_mailbox_sync_deinit+0x185 ) [0x7fcb7f998bb5] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_sync_deinit+0x32) [0x7fcb7f921222] -> /usr/lib64/dovecot/lib20_virtual_plugin.so(virtual_storage_sync_init+0xab3) [0x7fcb7e9f7313] -> /usr /lib64/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x3b) [0x7fcb7f92119b] -> dovecot/imap(imap_sync_init+0x68) [0x55b6ef47c238] -> dovecot/imap(cmd_sync_delayed+0x242) [0x55b6ef47cfb2] -> dovecot/imap(clie nt_handle_input+0x220) [0x55b6ef4706b0] -> dovecot/imap(client_input+0x82) [0x55b6ef470b82] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) [0x7fcb7f67228c] -> /usr/lib64/dovecot/libdovecot.so.0(io_l oop_handler_run_internal+0x101) [0x7fcb7f673731] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) [0x7fcb7f672315] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fcb7f6724b8] -> /usr/ lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7fcb7f60b663] -> dovecot/imap(main+0x2db) [0x55b6ef463a0b] -> /lib64/libc.so.6(__libc_start_main+0xf0) [0x7fcb7f23b580] -> dovecot/imap(_start+0x29) [0x5 5b6ef463b99] [root:~] # dovecot -n # 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.12 (c1c0a23) # OS: Linux 4.4.6-300.fc23.x86_64 x86_64 Fedora release 23 (Twenty Three) auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb imap_client_workarounds = tb-extra-mailbox-sep listen = * log_path = /var/log/dovecot.log mail_access_groups = mail, vmail mail_home = /var/mail/vmail/%d/%n mail_location = maildir:~/mail mail_plugins = virtual, acl managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } namespace virtual { location = virtual:/var/mail/vhosts/%d/%n/virtual prefix = virtual. separator = . } passdb { args = scheme=PLAIN username_format=%u /etc/dovecot/dovecot-users driver = passwd-file } plugin { acl = vfile acl_shared_dict = file:/var/mail/vhosts/shared-mailboxes.db fetchmail_helper = /var/mail/vhosts/bin/restart_fetchmail %h reload fetchmail_interval = 3000000 fetchmail_pidfile = %h/.fetchmail.pid sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /var/mail/vhosts/sieve-global } protocols = imap lmtp sieve service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 0 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } ssl = required ssl_cert = </etc/pki/dovecot/certs/hjbmx.ddns.net.cert.pem ssl_cipher_list = PROFILE=SYSTEM ssl_key = </etc/pki/dovecot/private/hjbmx.ddns.net.key.pem userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol lmtp { mail_plugins = virtual, acl , sieve } protocol lda { mail_plugins = virtual, acl , sieve } protocol imap { mail_plugins = virtual, acl , imap_acl }

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doveadm import from backup of public namespace
by Bernhard Westenhöfer 29 Jun '16

29 Jun '16

Hello, we are creating backups of our public folders with following command: /usr/bin/doveadm -o mail=mdbox:/home/vmail/public backup "mdbox:/var/local/backup/dovecot/public" With doveadm we can search/extract mails like that: doveadm -D -o plugin/acl="" -o mail=mdbox:/var/local/backup/dovecot/public search mailbox INBOX.projects.implementation.55-0004-000-IT.Server.Mailsystem.imap all .... doveadm(bwe): Debug: Effective uid=0, gid=0, home=/root doveadm(bwe): Debug: acl: No acl setting - ACLs are disabled doveadm(bwe): Debug: Namespace inbox: type=private, prefix=INBOX., sep=., inbox=yes, hidden=no, list=yes, subscriptions=yes location=mdbox:/var/local/backup/dovecot/public doveadm(bwe): Debug: fs: root=/var/local/backup/dovecot/public, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Namespace : type=public, prefix=Public., sep=., inbox=no, hidden=no, list=yes, subscriptions=yes location=mdbox:/home/vmail/public doveadm(bwe): Debug: fs: root=/home/vmail/public, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Namespace : type=public, prefix=Archive., sep=., inbox=no, hidden=no, list=yes, subscriptions=yes location=mdbox:/home/vmail/archive doveadm(bwe): Debug: fs: root=/home/vmail/archive, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Namespace : type=private, prefix=, sep=, inbox=no, hidden=yes, list=no, subscriptions=no location=fail::LAYOUT=none doveadm(bwe): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt= 12a155041b825d57c7150000d77ca1d0 2 12a155041b825d57c7150000d77ca1d0 3 12a155041b825d57c7150000d77ca1d0 4 When trying to import mails from those backups we can find no way to address the public folder to import from: doveadm -D -o plugin/acl="" import -u bwe mdbox:/var/local/backup/dovecot/public restore Mailbox projects.implementation.55-0004-000-IT.Server.Mailsystem.imap all doveadm -D -o plugin/acl="" import -u bwe mdbox:/var/local/backup/dovecot/public restore mailbox INBOX.projects.implementation.55-0004-000-IT.Server.Mailsystem.imap all doveadm -D -o plugin/acl="" import -u bwe mdbox:/var/local/backup/dovecot/public restore mailbox Public.projects.implementation.55-0004-000-IT.Server.Mailsystem.imap all nothing happens, we just get: doveadm(bwe): Debug: Effective uid=0, gid=0, home=/root doveadm(bwe): Debug: acl: No acl setting - ACLs are disabled doveadm(bwe): Debug: fs: root=/var/local/backup/dovecot/public, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Added userdb setting: mail=mdbox:~/mdbox doveadm(bwe): Debug: Added userdb setting: plugin/master_user=bwe doveadm(bwe): Debug: Effective uid=2000, gid=2000, home=/home/vmail/bwe doveadm(bwe): Debug: acl: No acl setting - ACLs are disabled doveadm(bwe): Debug: Namespace inbox: type=private, prefix=INBOX., sep=., inbox=yes, hidden=no, list=yes, subscriptions=yes location=mdbox:~/mdbox doveadm(bwe): Debug: fs: root=/home/vmail/bwe/mdbox, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Namespace : type=public, prefix=Public., sep=., inbox=no, hidden=no, list=yes, subscriptions=yes location=mdbox:/home/vmail/public doveadm(bwe): Debug: fs: root=/home/vmail/public, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Namespace : type=public, prefix=Archive., sep=., inbox=no, hidden=no, list=yes, subscriptions=yes location=mdbox:/home/vmail/archive doveadm(bwe): Debug: fs: root=/home/vmail/archive, index=, indexpvt=, control=, inbox=, alt= doveadm(bwe): Debug: Namespace : type=private, prefix=, sep=, inbox=no, hidden=yes, list=no, subscriptions=no location=fail::LAYOUT=none doveadm(bwe): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt= How can mails from those backups restored or how do we have to address the mailbox in this case? Bernhard

1 0

chroot: Error: Temp file creation to /tmp
by bvr 29 Jun '16

29 Jun '16

Hello, We are using dovecot (2.2.10) and it's working great! When I enable chrooting by appending /./ to the homedirs I'm getting errors like this: mail1 dovecot[47074]: imap(user): Error: Temp file creation to /tmp/dovecot.imap.mail1.70079. failed: No such file or directory On the surface everything seems to be working fine and I have not been able to produce the error myself. Any ideas? Thanks in advance, bvr.

2 2

exempt local auth-client UNIX socket from failed login penalty // add to login_trusted_networks ?
by Steffen Kaiser 29 Jun '16

29 Jun '16

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm using Dovecot v2.2 with unix_listener auth-client { } to verify passwords for a different service. However, it looks like that auth_failure_delay effects all connects going through that socket. I mean: connect /var/run/dovecot2.2/auth-client attempt bad auth 2s penalty NO disconnect ==> Note, it's another connection almost immediately following each connect /var/run/dovecot2.2/auth-client attempt good auth 2s penalty OK disconnect Can I disable auth_failure_delay for local UNIX sockets? How do I add it to login_trusted_networks? - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEVAwUBV20MbHz1H7kL/d9rAQKm1AgAiVjjSimUTapEbhqHwZzfQWLzcJlkfm2W z5smziGbVELYb0/COPd84GK6wyUF7+3iRZOuVPhLRdljhB72PWRe+hHX3KgMWHr2 1o5WLkX+0cGEwSXMvJ2w3ee/zmxYxva2WI+PjSzkgvvhxGMtnIxO7mMglEV5zbbq ZxJcC1Ba4T9qpUhRIw3EQ5VPRs4cnLBz3Im4IDGLduWAGJYf/Rrxh+x+k3IqMtzb v92ErjgQtz5bN+bgEtQ8C33UehoZeZ93eA3V8o/OiwZPtWyneWL6Yqwxni4LjtLI R4wuu0N6Ea/BbA/fsElquRer0bXH2Zkt5mckJpDG6Rbe/IO5WYXq0A== =axyE -----END PGP SIGNATURE-----

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dsync unstable? (other strange detail)
by Heiko Schlittermann 29 Jun '16

29 Jun '16

Hi, I'm trying to migrate from Cyrus (remote side) to Dovecot 2.2.24 (local). On the local side the destinations folders, and indexes are empty. The command I'm using is doveadm \ -o mail_plugins= \ -o imapc_master_user=<cyrus-user> \ -o imapc_password=<cyrus-password> \ -o imapc_host=<cyrus-ip> \ \ -o imapc_ssl_verify=no \ -o imapc_ssl=imaps \ -o imapc_port=993 \ backup -f -u "heiko" -R imapc: \ || { rc=$? echo "EXIT: $rc" >&2 exit $rc } On successive runs of the above command I get: dsync(heiko): Warning: Deleting mailbox 'Serververwaltung.Mailinglisten Anforderung': UID=16 GUID= is missing locally EXIT: 75 dsync(heiko): Warning: Deleting mailbox 'Serververwaltung.Mailman': UID=2 GUID= is missing locally EXIT: 75 dsync(heiko): Warning: Deleting mailbox 'Serververwaltung.Servermeldungen': UID=514 GUID= is missing locally EXIT: 75 dsync(heiko): Warning: Deleting mailbox 'Serververwaltung.Servermeldungen.AIDE': UID=188292 GUID= is missing locally EXIT: 75 dsync(heiko): Warning: Deleting mailbox 'Serververwaltung.Servermeldungen.AIDE.AIDE - 2012': UID=9343 GUID= is missing locally EXIT: 75 Any idea where to look next? Is 'doveadm backup' the wrong tool for such migration? (I'd say with about 2.2.9 I had similar problems, but at least it didn't stop at every subfolder.) Best regards from Dresden/Germany Viele Grüße aus Dresden Heiko Schlittermann -- SCHLITTERMANN.de ---------------------------- internet & unix support - Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} - gnupg encrypted messages are welcome --------------- key ID: F69376CE - ! key id 7CBF764A and 972EAC9F are revoked since 2015-01 ------------ -

2 6

FTS search used / useful on an IMAP proxy?
by Luca Lesinigo 29 Jun '16

29 Jun '16

We are preparing an IMAP proxy based on dovecot-2.2.22, basic proxy functionality is already working and I’m trying to understand if having the FTS service configured on the dovecot *proxy* would be of any use. I do suspect it would be useless, I guess dovecot in imap proxy mode just forwards any command to the backend and does not bother to do anything about it, but I’m failing to find a definitive answer in the documentation. If I am guessing correctly, an fts service would only be useful if configured and working on the actual backend. Can anyone clarify my doubts? thank you, -- Luca Lesinigo

3 2

Disabling passdb pam in local.conf
by Patrick Ben Koetter 29 Jun '16

29 Jun '16

Greetings, I'm trying to create a configuration that leaves every config file deployed by an install process or paket management software untouched. The goal is to put every configuration required into /etc/dovecot/local.conf. I've come quite far, but I fail to disable pam as passdb service in local.conf. What I get if I run doveconf -n is this section: passdb { driver = pam } It is in there, because 10-auth.conf includes it: !include auth-system.conf.ext These actions are not an option at the moment: - modify /etc/dovecot/conf.d/10-auth.conf and comment/remove the !include-statement - create an /etc/dovecot/dovecot.conf which would contain all options required and would not include any other *.conf files Reading http://wiki2.dovecot.org/ConfigFile I see ways to include external files, but nothing to exclude a file in local.conf. Knowing Timo I would expect there is a way to acchieve what I want. I just don't seem to find it. What am I missing? Regards, p@rick -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Schleißheimer Straße 26/MG,80333 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein

8 20

Suggestion: Split login_trusted_networks
by Peter Mogensen 29 Jun '16

29 Jun '16

Hi, For the upcoming 2.3 development, I'd like to re-suggest this: It seems the use of login_trusted_networks is overloaded. Example: * It's used for indicating which hosts you trust to provide XCLIENT remote IP's. (like a proxy) * It's used for indicating from which hosts you trust logins enough to disable auth penalty. (like in a webmail) Often these two uses cases have a different set of hosts. So you can't have one set of hosts which you trust for XCLIENT and another set of hosts you trust for not being the origin of brute force attacks. /Peter

2 2

Where Dovecot stores subscribtions for shared folder
by Miloslav Hůla 28 Jun '16

28 Jun '16

Hi, could please someone hint me, where Dovecot stores subscribtions for shared folder? Our configuration: namespace { disabled = no hidden = no ignore_on_failure = no inbox = no list = children location = maildir:/vmail/user/%%n/Maildir:INDEXPVT=/vmail/user/%n/Maildir/Shared/%%n prefix = user.%%n. separator = . subscriptions = yes type = shared } When I subscribe to 'user.test', I'll get ~Maildir/Shared/test/.INBOX/dovecot.index.pvt.log in it. When I unsubscribe from 'user.test', file stays there and its hash is the same. Kind regards, Milo

2 1