Processed: Re: Bug#336843: adduser: removes user from group if /etc/group file ends with :
Processing commands for [EMAIL PROTECTED]: tags 336843 wontfix Bug#336843: getgrnam returns trailing : in user name There were no tags set. Tags added: wontfix thanks Stopping processing here. Please contact me if you need assistance. Debian bug tracking system administrator (administrator, Debian Bugs database) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#336843: adduser: removes user from group if /etc/group file ends with :
tags 336843 wontfix thanks Judged that : is the field separator in /etc/group, and that /etc/group might change its format to include more fields, and that a colon is not a valid character in a user name (it would wreck havoc in /etc/passwd), I would expect that perl would consider the : a delimiter here and not return it as part of the group name. perl doesn't parse /etc/group directly, it just calls libc's getgrname, which returns a list as gr_mem (the last entry of which has a trailing colon in this case). There is specified behaviour on invalid passwd files, so whatever glibc does here is within the specs. The function could also segfault at that point. This could maybe reported to the upstream but they'll probably think the same way. Helmut Grohne signature.asc Description: Digital signature
Re: Bug#336843: adduser: removes user from group if /etc/group file ends with :
severity 336843 wishlist
thanks
On Fri, Nov 04, 2005 at 06:29:10PM +1100, Brendan O'Dea wrote:
reassign 336843 glibc
thanks
On Thu, Nov 03, 2005 at 09:11:15PM +0100, Marc Haber wrote:
On Tue, Nov 01, 2005 at 05:43:40PM +0100, Marc Haber wrote:
If a line in /etc/group ends with a colon, adduser user group removes
the last user listed in /etc/group:
Actually, it's perl's fault:
$ grep '^wheel' /etc/group
wheel:x:104:mh,scyadmin:
$ perl -e 'foreach (split(/ /,
(getgrnam(wheel))[3])) { print $_\n; };'
mh
scyadmin:
[12/[EMAIL PROTECTED]:~$
Judged that : is the field separator in /etc/group, and that
/etc/group might change its format to include more fields, and that a
colon is not a valid character in a user name (it would wreck havoc in
/etc/passwd), I would expect that perl would consider the : a
delimiter here and not return it as part of the group name.
The format of /etc/group does not allow to put a colon at this place, so
if you put one anyway, it's normal to have some breakage.
Closing the bug.
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Re: Bug#336843: adduser: removes user from group if /etc/group file ends with :
reassign 336843 glibc
thanks
On Thu, Nov 03, 2005 at 09:11:15PM +0100, Marc Haber wrote:
On Tue, Nov 01, 2005 at 05:43:40PM +0100, Marc Haber wrote:
If a line in /etc/group ends with a colon, adduser user group removes
the last user listed in /etc/group:
Actually, it's perl's fault:
$ grep '^wheel' /etc/group
wheel:x:104:mh,scyadmin:
$ perl -e 'foreach (split(/ /,
(getgrnam(wheel))[3])) { print $_\n; };'
mh
scyadmin:
[12/[EMAIL PROTECTED]:~$
Judged that : is the field separator in /etc/group, and that
/etc/group might change its format to include more fields, and that a
colon is not a valid character in a user name (it would wreck havoc in
/etc/passwd), I would expect that perl would consider the : a
delimiter here and not return it as part of the group name.
perl doesn't parse /etc/group directly, it just calls libc's getgrname,
which returns a list as gr_mem (the last entry of which has a trailing
colon in this case).
--bod
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