my 10-master.conf;

service pop3-login { inet_listener pop3 { }

service pop3 { executable = pop3 pop3-postlogin }

service pop3-postlogin { executable = script-login /usr/local/bin/postlogin_pop3.sh user = root unix_listener pop3-postlogin { } }

when i restart dovecot service. i get an error; Aug 11 00:48:27 pop3y dovecot: pop3-postlogin: Error: read: Illegal option -d Aug 11 00:39:56 pop3y dovecot: pop3-login: Login: user=test@test.com, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=99386, secured, session= Aug 11 00:39:56 pop3y dovecot: pop3(test@test.com): Post-login script denied access to user test@test.com Aug 11 00:39:56 pop3y dovecot: pop3-postlogin: Fatal: master: service(pop3-postlogin): child 99387 returned error 10

pop3y# ll /usr/local/bin/postlogin_pop3.sh -rwxr-xr-x 1 root wheel 5449 Aug 11 00:46 /usr/local/bin/postlogin_pop3.sh

i use freebsd8.2

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i can manage read -d problem changing -p

what should be user rights of the postlogin_pop3.sh ? i use vpopmail

the pop3script;

#!/bin/sh # 30-jul-2007 # # Author: # Oliver Schulze L. # Contact: http://tinymailto.com/oliver # Paraguay

INTRANET_NETS="127.0.0.1 10."

# users that can login from the Internet INTERNET_USERS="user1 user2 user3 user4 test@test.com"

DEBUG=0

# variables setup by dovecot: IP USER

# configure the dovecot binary to run based on the name of the script, so # this script can be used for imap and pop3 just by making a link SCRIPT_BASE="postlogin" DOVECOT_EXEC="" if [ "$(basename $0)" = "${SCRIPT_BASE}_imap.sh" ] ; then DOVECOT_EXEC="/usr/local/libexec/dovecot/imap" elif [ "$(basename $0)" = "${SCRIPT_BASE}_pop3.sh" ] ; then DOVECOT_EXEC="/usr/local/libexec/dovecot/pop3" else MSG="Please edit the file $(basename $0) and change the SCRIPT_BASE variable" /usr/bin/logger "$MSG" # display a message to the user echo "* OK [ALERT] $MSG" # cancel the current imap request echo "* NO $MSG" exit 1 fi

# debug if [ $DEBUG -eq 1 ] ; then # TEST data DEBUG=1

    # intranet test, any user can login
    #IP=192.168.1.23
    #USER=user222

    # internet test, only user user2 can login
    #IP=200.85.32.2
    #USER=user2

fi

if [ -z "$IP" ] ; then echo "$(basename $0): IP variable is empty" exit 2 fi if [ -z "$USER" ] ; then echo "$(basename $0): USER variable is empty" exit 3 fi

# FLAGS IN_INTRANET=0 INTERNET_ALLOWED=0 DOVECOT_ALLOW=0

# Create this file in a RAM based directory in order to gain performance FILE_TMP=$(mktemp /tmp/login-intranet-dovecot.tmp.XXXXXX)

#

# check if the IP is from the Intranet

# always use a tmp file in while in order to modify this script variables echo "$INTRANET_NETS " > $FILE_TMP

# cicle all intranets while read -p ' ' net_intranet ; do net_grep=$(echo $net_intranet | sed -e 's/\./\\\./g') echo $IP | grep $net_grep 2>/dev/null 1>/dev/null RES=$?

    if [ $DEBUG -eq 1 ] ; then
            echo "  net_intranet: $net_intranet -> RES: $RES"
    fi

    if [ $RES -eq 0 ] ; then
            # the IP is from the intranet, stop processing and allow

login IN_INTRANET=1 break fi done < $FILE_TMP

#

# if the user is connecting from outside the intranet, check if it is allowed # to do so if [ $IN_INTRANET -eq 0 ] ; then # always use a tmp file in while echo "$INTERNET_USERS " > $FILE_TMP

    # cicle all allowed internet users
    while read -p ' ' user_inet ; do
            if [ $DEBUG -eq 1 ] ; then
                    echo "  $USER == $user_inet"
            fi

            if [ "$USER" = "$user_inet" ] ; then
                    # the user is conecting from the Internet and is

allowed, stop # processing and allow login INTERNET_ALLOWED=1 break fi done < $FILE_TMP

fi

if [ $DEBUG -eq 1 ] ; then echo "IN_INTRANET : $IN_INTRANET" echo "INTERNET_ALLOWED: $INTERNET_ALLOWED" fi

# delete temp file rm -f $FILE_TMP

if [ $IN_INTRANET -eq 1 ] ; then # the user is conecting from the intranet DOVECOT_ALLOW=1 elif [ $IN_INTRANET -eq 0 ] && [ $INTERNET_ALLOWED -eq 1 ] ; then # the user is conecting from the internet and is an allowed internet user DOVECOT_ALLOW=1 fi

# check if the user can login if [ $DOVECOT_ALLOW -eq 1 ] ; then # the user can login, run the imap or pop3 server if [ $DEBUG -eq 1 ] ; then echo "exec $DOVECOT_EXEC" else # this script ends here exec $DOVECOT_EXEC fi else # user is not allowed to login, inform the user and system log

    #MSG="El usuario '$USER' no puede conectarse desde Internet"
    MSG="User '$USER' not allowed to connect from the Internet [$IP]"
    /usr/bin/logger "$(basename $0): $MSG"
    # display a message to the user
    echo "* OK [ALERT] $MSG"
    # cancel the current imap request
    echo "* NO $MSG"
    exit 10

fi

exec $@

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I started to use bash in the script and changed read -d instead of -p. Also I get the script 's rights root:dovecot

I get an error;

-ERR pop3 binary must not be started from inetd, use pop3-login instead. Connection closed by foreign host. Aug 11 04:30:05 pop3y dovecot: pop3(test@test.com): Post-login script denied access to user test@test.com Aug 11 04:30:05 pop3y dovecot: pop3-postlogin: Fatal: master: service(pop3-postlogin): child 15837 returned error 1

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bmalik wrote:

is there another post-login script that i can use on freebsd ?

You can use virtually any executable for post-login if they communicate as expected.

First you should start simple and create a post-login script consisting of just a few lines which just covers the case of "access always granted to any user".

Once you got this working, you will be able to extend your script with the required denial features.

Why are you executing any $DOVECOT_EXEC anyways? The example scripts at http://wiki2.dovecot.org/PostLoginScripting are just doing a exec "$@" to exec chained scripts. It seems that dovecot already executes the service binary, which then communicates with the script-login process from "imap-postlogin" service via its "imap-postlogin" socket:

service imap { # tell imap to do post-login lookup using a socket called "imap-postlogin" executable = imap imap-postlogin }

# The service name below doesn't actually matter. service imap-postlogin { # all post-login scripts are executed via script-login binary executable = script-login /usr/local/bin/postlogin.sh

# the script process runs as the user specified here (v2.0.14+): user = $default_internal_user # this UNIX socket listener must use the same name as given to imap executable unix_listener imap-postlogin { } }

Regards Daniel

https://plus.google.com/103021802792276734820

bmalik wrote:

I wrote a loginscript in bash. it works well. I can restrict a user by IP. how can i restrict a particular email address by tcp port ? I want a particular mail address to be forced to use pop3s/imaps.

What's your doveconf -n output, please? Are you using SQL or LDAP for user lookup?

You probably should do the filtering already in your userdb/authdb lookup queries, since Variable %a or %{lport} which contains the local port is only available in Dovecot-Auth according to http://wiki2.dovecot.org/Variables

Regards Daniel

https://plus.google.com/103021802792276734820

On 2012-08-12 7:13 PM, Daniel Parthey daniel.parthey@informatik.tu-chemnitz.de wrote:

bmalik wrote:

...

I wrote a loginscript in bash. it works well. I can restrict a user by IP. how can i restrict a particular email address by tcp port ? I want a particular mail address to be forced to use pop3s/imaps.

What's your doveconf -n output, please? Are you using SQL or LDAP for user lookup?

You probably should do the filtering already in your userdb/authdb lookup queries, since Variable %a or %{lport} which contains the local port is only available in Dovecot-Auth according to http://wiki2.dovecot.org/Variables

Or you could use something like:

http://wiki2.dovecot.org/Authentication/RestrictAccess

--

Best regards,

Charles

is there a solution ?

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