Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
li...@datenritter.de writes: > Maybe scrap the whole thing. Use backticks to feed the email to a Perl > script that safely parses headers. Okay... the beforementioned problems left aside, what is the advantage? You can safely implement the same functionality in Perl itself, instead of executing shell commands, which is difficult to do right without creating security holes. It's all about a simple regex. IMHO, the beauty of all solutions discussed here is that they use maildropfiler and nothing else. maildropfilter is fine for simple mail filtering tasks. But it's not Perl. "At the very least"? Does an external perl script have any security advantage over this? See above. A Perl script can validate and do a lot more things, all without shelling out to external commands. pgptsokKIuh6S.pgp Description: PGP signature -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
Am 30.03.2017 um 02:46 schrieb Sam Varshavchik: >> ### BUG: This leaves LPART and DPART empty. :( ### >> LPART=`echo $MATCH1 | sed "s/\./_/g"` > > If someone were to send an email with a carefully crafted header that reads: > "X-BeenThere: ; rm -rf $HOME" you'll have a lot of cleanup to do. Ouch. I had this bad feeling all the time... Fixed it. Thank you. Still, at the moment, there should be nothing to worry about, as even: BLABLA=`echo hallo >> /tmp/test.txt` doesn't have any effect. (I.e. no file "test.txt" appears in /tmp.) Filling variables with backtick-commands doesn't seem to work in my setup. They are empty afterwards, while the very exact statements work on the command line. > Maybe scrap the whole thing. Use backticks to feed the email to a Perl > script that safely parses headers. Okay... the beforementioned problems left aside, what is the advantage? It's all about a simple regex. IMHO, the beauty of all solutions discussed here is that they use maildropfiler and nothing else. > At the very least use an additional =~ operator to verify that matched > pattern is sane: > > LOCALPART=$MATCH1 > > if ($LOCALPART =~ /^[A-Za-z0-9\.\-]+$/) "At the very least"? Does an external perl script have any security advantage over this? d. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
li...@datenritter.de writes:
Below is how I did it. Unfortunately the script stopped working a few
months ago writing hundreds of mails to (mbox?-)files with useful names
like ".@".
My debug version with some extra logging needs more input, so I'll send
it to this list... ["Yo dawg, I heard you like mail filters..."]
Anyway, it's meant to make everything maintenance free. When the first
mail from a list you subscribed to is received, a maildir
".listname@some_domain_tld" is created and added to courierimapsubscribed.
# Check X-BeenThere which every good list server sets.
# List-ID is okay, too.
if ( /^X-BeenThere:\s+(.*)@(.*)/ )
{
# Pick local part and domain part, replace the dots with
# underscores.
### BUG: This leaves LPART and DPART empty. :( ###
LPART=`echo $MATCH1 | sed "s/\./_/g"`
If someone were to send an email with a carefully crafted header that reads:
"X-BeenThere: ; rm -rf $HOME" you'll have a lot of cleanup to do.
Maybe additional quotation marks are required around "$MATCH[1|2]"?
Maybe scrap the whole thing. Use backticks to feed the email to a Perl
script that safely parses headers.
At the very least use an additional =~ operator to verify that matched
pattern is sane:
LOCALPART=$MATCH1
if ($LOCALPART =~ /^[A-Za-z0-9\.\-]+$/)
Then you can proceed and safely substitute $LOCALPART into an executed
command.
pgpx7gjaJ2FBC.pgp
Description: PGP signature
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot___
courier-users mailing list
courier-users@lists.sourceforge.net
Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
Am 02.09.2016 um 11:01 schrieb Alessandro Vesely:
>> If you would like to sort mails from this mailing list into defined
>> folder, then use List-Id header as selection criterium:
>>
>> if (/^List-Id:.*courier-users.lists.sourceforge.net/)
>> to "$HOME/Maildir/$FOLDER/"
>>
>> (use desired folder name instead on $FOLDER, I use - for this list -
>> .Software.Courier.courier-users).
>
> An obvious generalization, to avoid editing $HOME/.mailfilter on every new
> subscription:
>
> if (/^List-ID:[^<]*<([-_A-Za-z0-9]*)/)
> {
> DEST=`sed -nr 's/^INBOX(\\.'"$MATCH1"')$/\\1/ip'
> ./Maildir/courierimapsubscribed`
> if ("$DEST")
> {
> `test -d "./Maildir/$DEST"`
> if ($RETURNCODE == 0)
> to "./Maildir/$DEST";
> }
> }
>
Below is how I did it. Unfortunately the script stopped working a few
months ago writing hundreds of mails to (mbox?-)files with useful names
like ".@".
My debug version with some extra logging needs more input, so I'll send
it to this list... ["Yo dawg, I heard you like mail filters..."]
Anyway, it's meant to make everything maintenance free. When the first
mail from a list you subscribed to is received, a maildir
".listname@some_domain_tld" is created and added to courierimapsubscribed.
# Check X-BeenThere which every good list server sets.
# List-ID is okay, too.
if ( /^X-BeenThere:\s+(.*)@(.*)/ )
{
# Pick local part and domain part, replace the dots with
# underscores.
### BUG: This leaves LPART and DPART empty. :( ###
LPART=`echo $MATCH1 | sed "s/\./_/g"`
DPART=`echo $MATCH2 | sed "s/\./_/g"`
PREFIX=""
FOLDER=".$LPART@$DPART"
# I want subfolders for organizations with more than one list:
if ( /^X-BeenThere:.*specialorg.*/ )
{
PREFIX=".specialorg"
FOLDER=".$LPART"
}
NEWDIR=$HOME/Maildir/$PREFIX$FOLDER
# create the maildir if it doesn't exist:
`test -d "$NEWDIR"`
if( $RETURNCODE == 1 )
{
`maildirmake $NEWDIR`
`echo "INBOX$PREFIX$FOLDER" \
>> $HOME/Maildir/courierimapsubscribed`
}
to $NEWDIR
}
Maybe additional quotation marks are required around "$MATCH[1|2]"?
d.
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
courier-users mailing list
courier-users@lists.sourceforge.net
Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
On Fri 02/Sep/2016 07:26:12 +0200 Milan Obuch wrote:
> On Thu, 1 Sep 2016 20:57:50 -0400 David Niklas wrote:
>
>> I wanted to know if courier could read the subject/from metadata so
>> that it could place courier mailing list mail into one folder and so
>> on with other mail received.
>
> simplest method would be using maildrop recipe for this user. It comes
> into play after determining mailbox/home directory for mail being
> delivered if configured so. Maildrop recipes are easy to read
> resembling common programming languages or scripts.
>
> You nead just configure courier to use it, either with .courier if
> maildrop should be used only for said user, or setting DEFAULTDELIVERY
> in courierd config file for all users.
>
> If you would like to sort mails from this mailing list into defined
> folder, then use List-Id header as selection criterium:
>
> if (/^List-Id:.*courier-users.lists.sourceforge.net/)
> to "$HOME/Maildir/$FOLDER/"
>
> (use desired folder name instead on $FOLDER, I use - for this list -
> .Software.Courier.courier-users).
An obvious generalization, to avoid editing $HOME/.mailfilter on every new
subscription:
if (/^List-ID:[^<]*<([-_A-Za-z0-9]*)/)
{
DEST=`sed -nr 's/^INBOX(\\.'"$MATCH1"')$/\\1/ip'
./Maildir/courierimapsubscribed`
if ("$DEST")
{
`test -d "./Maildir/$DEST"`
if ($RETURNCODE == 0)
to "./Maildir/$DEST";
}
}
Note that the regex only collects characters up to but excluding the first dot
(or semicolon, in case of malice), so the 2nd arg to sed would actually be
"s/^INBOX(\.courier-users)$/\1/ip" for messages in this list.
Ale
--
--
___
courier-users mailing list
courier-users@lists.sourceforge.net
Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
On Thu, 1 Sep 2016 20:57:50 -0400 David Niklas wrote: > Hello, > I wanted to know if courier could read the subject/from metadata so > that it could place courier mailing list mail into one folder and so > on with other mail received. > I'm talking about doing this after the part where courier figures out > that the email message it just received/retrieved is for a local user > and after deciding to place the email in the inbox of said user. > > Thanks, > David > Hi, simplest method would be using maildrop recipe for this user. It comes into play after determining mailbox/home directory for mail being delivered id configured so. Maildrop recipes are easy to read resembling common programming languages or scripts. You nead just configure courier to use it, either with .courier if maildrop should be used only for said user, or setting DEFAULTDELIVERY in courierd config file for all users. If you would like to sort mails from this mailing list into defined folder, then use List-Id header as selection criterium: if (/^List-Id:.*courier-users.lists.sourceforge.net/) to "$HOME/Maildir/$FOLDER/" (use desired folder name instead on $FOLDER, I use - for this list - .Software.Courier.courier-users). Regards, Milan -- ___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
Re: [courier-users] Can courier sort mail for one user into multiple subfolders for imap
On Thu, 2016-09-01 at 20:57 -0400, David Niklas wrote: > Hello, > I wanted to know if courier could read the subject/from metadata so that > it could place courier mailing list mail into one folder and so on with > other mail received. > I'm talking about doing this after the part where courier figures out > that the email message it just received/retrieved is for a local user and > after deciding to place the email in the inbox of said user. You can use use maildrop to do this in a ~/.mailfilter script, or you can, as I do, use a special address for your mailing list subscription. I have, for instance, all mail addressed to fmouse-postmas...@fmp.com delivered to ./Maildir/.postmaster as instructed in the file ~/.courier-postmaster. I could do the same for my courier-users address, fmouse-cour...@fmp.com except that I have a null ~/.courier-courier file, which says simply that the address is valid, and I let my MUA do the filtering. -- Lindsay Haisley | "UNIX is user-friendly, it just FMP Computer Services | chooses its friends." 512-259-1190 | -- Andreas Bogk http://www.fmp.com| -- ___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
[courier-users] Can courier sort mail for one user into multiple subfolders for imap
Hello, I wanted to know if courier could read the subject/from metadata so that it could place courier mailing list mail into one folder and so on with other mail received. I'm talking about doing this after the part where courier figures out that the email message it just received/retrieved is for a local user and after deciding to place the email in the inbox of said user. Thanks, David -- ___ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
