Hello Felix,
Felix Fontein <[email protected]> wrote:
|I've noticed that the new version of s-nail (14.9.0) now prints
|warnings and segfaults when $HOME of the current user is not writable.
This is bitter! Thank you very much for reporting this bug!
|I'm using it to send mail from a cronjob of my http user, which has no
|write-access to its home folder.
|
|The previous versions (14.8.16 and earlier) did neither print these
|warnings nor segfaulted.
I consider these new verifications an improvement, you need to
redirect standard error to /dev/null to get rid of those (i.e.,
"echo test | sudo -u http mail my@self 2>/dev/null", then).
(The idea is that we now catch things when they get set as
necessary, and can use them without further tests from then on.
Having said this...)
|I'm using Arch Linux, my server's architecture is x86_64. Steps to
|reproduce:
|
| # ls -lah /home | grep http
| dr-xr-x--- 7 http http 4.0K Jun 3 11:53 http
|
| # echo test | sudo -u http mail my@self
| mail: $HOME is not a directory or not accessible: /home/http
| mail: $TMPDIR is not a directory or not accessible: /home/http
| mail: Assignment of variable aborted: HOME
| Segmentation fault
Yes, that is a programming error where the code flow does not
actually represent the comment, which in turn is correct! Sic!
What a pity! ^.^
I fixed it accordingly in the other window and will push it in
a few seconds, but this will not help you. As a workaround, set
HOME to any directory that can be written to, i would suggest /tmp:
?0[tmp]# echo bla |
su -c 'LC_ALL=C /bin/mail -d -:/ -s sub -X"var HOME TMPDIR" a@b' \
noone
mail: $HOME is not a directory or not accessible: /var/empty
mail: $TMPDIR is not a directory or not accessible: /var/empty
mail: Assignment of variable aborted: HOME
mail: -X OPTION 15 bytes <var HOME TMPDIR>
#nodelete,notempty,import-environ-first,sync-environ
#variable not set: HOME
#notempty,import-environ-first,sync-environ,default-value
set TMPDIR=/tmp
mail: >>> MTA: /usr/sbin/sendmail, arguments: sendmail -i -- a@b
mail: >>> Date: Sat, 22 Jul 2017 23:30:04 +0200
mail: >>> To: a@b
mail: >>> Subject: sub
mail: >>> User-Agent: mail v14.9.0
mail: >>>
mail: >>> bla
Note the crash actually happens because you allow loading of the
(nonexistent?) ~/.mailrc, so we try to expand ~/ but $HOME is not
set because of the programming error. So if you need no setting
from /etc/mail.rc or ~{-> /home/http}/.mailrc, then simply set -:/
and be fine with it. (-:s loads only /etc/mail.rc.) Otherwise
set HOME=/tmp, as in
?0[tmp]# echo bla |
su -c 'LC_ALL=C HOME=/tmp /bin/mail -s sub a@b' noone #2>/dev/null
Hope this helps!
Thanks again for reporting the error, you have a credit.
Ciao.
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
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