On Fri, Feb 15, 2008 at 1:27 AM, TiagoCruz <[EMAIL PROTECTED]> wrote: > Public bug reported: > > During tests of FAUS application > (http://faus.sourceforge.net), release 1.4.5, an issue was found by using > getpwnam function from Perl. This > release was already tested against Mandriva, Debian and Oracle Linux without > showing the same bug. > > The bug happens when executing the script addsmb by using the web > application. Executing the script in a > shell as root does not shows the same behaviour, working as expected. > > The script addsmb is a Perl script that execute the following tasks: > > 1 - Add an user in /etc/passwd and /etc/shadow by using the Perl module > Passwd::Linux. > 2 - Adds the user in the Samba database by using IPC::Open3 Perl module, > smbpasswd and pdbedit > programs. > > The Passwd::Linux uses libc functions to manipulate the Linux user > databases. During step one of addsmb > Perl script, the user is added using Passwd::Linux module exported functions > and then calls getpwnam to > retrieve the ID created for the user. > > When executed by the web application, the ID is not returned by getpwnam(), > that returns undef, making the > application to fail to create the user correctly. > > The script addsmb is not suid: it's executed by faus.cgi by using Sudo > features. The CGI executes Sudo > with IPC::Open3, capturing STDOUT and STDERR. Sudo then invokes addsmb with > the given parameters. > > We were unable to detect where the failure may be happening (libc and/or > getpwnam from Perl is our guess > because some advisory file locking should be published and respected) but we > could provide an workaround by > using "sleep 3" inside addsmb script, after calling Passwd::Linux and before > executing getpwnam(). > > Possible related packages: > 1 - Perl core (includes IPC::Open3 and getpwnam()) > 2 - Sudo > 3 - Apache > 4 - Passwd::Linux > > Please let me know what we could test to identify where is the cause of > the bug. > > Thank you in advance. >
My suggestion is to run the cgi file from a command line with Perl. Also, are you checking $! after calling getpwnam() for any error messages? Steve Peters [EMAIL PROTECTED] -- Failure when using getpwnam core function from perl https://bugs.launchpad.net/bugs/192055 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
