default vsftpd package no login with pam-pgsql

[Phil]

1) lsb_release -rd:
Description: Ubuntu 14.04.1 LTS
Release: 14.04

2) default vsftpd package - apt-cache policy vsftpd:
Installed: 3.0.2-1ubuntu2.14.04.1
Candidate: 3.0.2-1ubuntu2.14.04.1
Version table:
*** 3.0.2-1ubuntu2.14.04.1 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
100 /var/lib/dpkg/status
3.0.2-1ubuntu2 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

3) I expect to be able to log in as a virtual user via pam-pgsql

4) Receive below errors

error received when attempting to log in via filezilla

Command: USER test
Response: 331 Please specify the password.
Command: PASS ****
Response: 500 OOPS: priv_sock_get_result
Error: Critical error: Could not connect to server

error logged in /var/log/auth.log

PAM unable to dlopen(pam_pgsql.so): libffi.so.6: failed to map segment from shared object: Cannot allocate memory
PAM adding faulty module: pam_pgsql.so

5) Solution:

 - 1) apt-get source vsftpd
 - 2) apply patches found in the debian distribution (can someone explain why patched source isn't already in debian zip?)
 - 3) make && make install (requires packages libwrap0 libwrap0-dev)

login works fine after installing from source, meaning the default vsftpd package is not compiled from its corresponding source. Without source of the default distributed package, I was unable to debug further.

6) I can provide configuration files, but will need an email to forward them to.

[Phil (philip-olson-m)]

More info found out today after updating the package 'openssl' then recompiling. I received the error:

PAM unable to dlopen(pam_pgsql.so): sqllite.so.6: failed to map segment from shared object: Cannot allocate memory

I then read online somewhere to add more memory limit via line 22 in defs.h

#define VSFTP_AS_LIMIT 100ul * 1024 * 1024

Without spending time to figure out how much more vsftpd actually needed, I arbitrarily appended " * 6", recompiled and the error went away. This suggests the default distributed vsftpd package could use a bug-fix along those same lines.

In the end, I've been reading that sftp is the future, so vsftpd might be obsolete anyway - however for those of us running into vsftpd issues, I don't see the harm in updating the default package to something that works.

Thanks,
Phil