[ossec-dev] [Bug 68] New: Wrong algorithm for getting nameservers from /etc/resolv.conf

[ossec-bugzilla@xxxxxxxxxxxxxxxxxxxxxxxxxxx]

http://www.ossec.net/bugs/show_bug.cgi?id=68

           Summary: Wrong algorithm for getting nameservers from
                    /etc/resolv.conf
           Product: OSSEC
           Version: 1.3
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P1
         Component: install
        AssignedTo: ossec-dev@xxxxxxxxx
        ReportedBy: php-coder@xxxxxxxxxxxx


Hello!

During installation install.sh tries to get nameservers from /etc/resolv.conf:

src/init/shared.sh:
 28 NAMESERVERS=`cat /etc/resolv.conf | grep "^nameserver" | cut -d " " -sf 2`
 29 NAMESERVERS2=`cat /etc/resolv.conf | grep "^nameserver" | cut -sf 2`

Except cat misusing (see also bug #64) this commands return not expected
results:

[c0der@rock ~]$ cat /etc/resolv.conf
nameserver 195.140.180.2
nameserver 195.140.181.2

[c0der@rock ~]$ grep "^nameserver" /etc/resolv.conf | cut -d " " -sf2
195.140.180.2
195.140.181.2

[c0der@rock ~]$ grep "^nameserver" /etc/resolv.conf | cut -sf2
[c0der@rock ~]$

After this all founded nameservers holds in variable NAMESERVERS and
NAMESERVERS2 always empty. I think it's not expected behavior.

But it's not break anything because used in for loop:

install.sh:
 538             for ip in ${NAMESERVERS} ${NAMESERVERS2};
 539             do
 540             if [ ! "X${ip}" = "X" ]; then
 541                 echo "      - ${ip}"
 542                 echo "    <white_list>${ip}</white_list>" >>$NEWCONFIG
 543             fi
 544             done


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