#!/usr/bin/sh
# -*- mode: sh; sh-shell: sh -*-
# dump assorted information of use in debugging
# Copyright (C) 1998, 1999  Henry Spencer.
# Copyright (C) 2019 Paul Wouters <pwouters@redhat.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.  See <https://www.gnu.org/licenses/gpl2.txt>.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#

LC_ALL=C export LC_ALL

LOGS=${LOGS-/var/log}
me="ipsec barf"

# kludge to produce no barf output mentioning policygroups if none are present.
# This will not catch ".file" policygroups.
PREPOLICIES=/etc/ipsec.d/policies
if [ -n "$(ls ${PREPOLICIES} 2>/dev/null)" ]; then
    POLICIES=${PREPOLICIES}
fi

# message patterns that start relevant parts of logs
fstart='Starting Libreswan'
pstart='Starting Pluto'

case "${1}" in
    --help)
	echo "Usage: ipsec barf"
	exit 0
	;;
    --version)
	echo "$me $IPSEC_VERSION"
	exit 0
	;;
esac

# log-location guesser, results in ${findlog_file} and ${findlog_startline}
# Fine point:  startline is the *last* line containing "string", or
# failing that, the *first* line containing "fallbackstring".
findlog() {	# findlog string fallbackstring possiblefile ...
    s="${1}"
    shift
    t="${1}"
    shift
    # try the suggested files first
    for f
    do
	if [ -s ${LOGS}/${f} -a \
	    -f ${LOGS}/${f} ] && \
	    grep -E -q "${s}" ${LOGS}/${f} 2>/dev/null
	then
	    # aha, this one has it
	    findlog_file=${LOGS}/${f}
	    findlog_startline=$(grep -E -n "${s}" ${LOGS}/${f} | \
		sed -n '$s/:.*//p')
	    return 0
	fi
    done
    for f
    do
	if [ -s ${LOGS}/${f} -a \
	    -f ${LOGS}/${f} ] && \
	    grep -E -q "${t}" ${LOGS}/${f} 2>/dev/null
	then
	    # aha, this one has it
	    findlog_file=${LOGS}/${f}
	    findlog_startline=$(grep -E -n "${t}" ${LOGS}/${f} | \
		sed -n '1s/:.*//p')
	    return 0
	fi
    done
    # nope, resort to a search, newest first, of uncompressed logs
    for f in $(ls -t ${LOGS} | grep -E -v 'lastlog|tmp|^mail|\.(gz|Z)$')
	do
	if [ -f ${LOGS}/${f} -a \
	    ! -d ${LOGS}/${f} ] && \
	    grep -E -q "${s}" ${LOGS}/${f} 2>/dev/null
	then
	    # found it
	    findlog_file=${LOGS}/${f}
	    findlog_startline=$(grep -E -n "${s}" ${LOGS}/${f} | \
		sed -n '$s/:.*//p')
	    return 0
	fi
    done
    for f in $(ls -t ${LOGS} | grep -E -v 'lastlog|tmp|^mail|\.(gz|Z)$')
    do
	if [ -s ${LOGS}/${f} -a \
	    -f ${LOGS}/${f} ] && \
	    grep -E -q "${t}" ${LOGS}/${f} 2>/dev/null
	then
	    # found it
	    findlog_file=${LOGS}/${f}
	    findlog_startline=$(grep -E -n "${t}" ${LOGS}/${f} | \
		sed -n '1s/:.*//p')
	    return 0
	fi
    done
    # echo "$0: unable to find ${LOGS}/${1} or local equivalent" >&2
    findlog_file=/dev/null
    findlog_startline=1	# arbitrary
}

if [ ! -x /usr/bin/journalctl -a ! -x /bin/journalctl ]; then
    # no systemd, need to figure out log file location
    findlog "$pstart" "Pluto" secure auth.log daemon.log debug
    if [ "${findlog_file}" = "/dev/null" ]; then
	echo "Unable to find Pluto messages, typically found in /var/log/secure or equivalent. You may need to run Libreswan for the first time; alternatively, your log files have been emptied (ie, logrotate) or we do not understand your logging configuration."
	fi
	plog=${findlog_file}
	pline=${findlog_startline}
fi

# /lib/modules examiner
modulegoo() {
    set +x
    for d in $(ls /lib/modules)
    do
	if test -d /lib/modules/${d}
	then
	    f=/lib/modules/${d}/${1}
	    if [ -f ${f} ]; then
		nm -g ${f} | grep -E "${2}"
	    else
		echo
	    fi | sed "s;^;${d}: ;"
	fi
    done
    set -x
}

# advanced shell deviousness to get dividers into output
_________________________() {
    ${2}	# something to do nothing and not echo anything
}

exec 2>&1		# stderr on stdout, so errors go into main output

hostname
date
set -x
_________________________ version
ipsec --version
_________________________ /proc/version
cat /proc/version
if [ -r /proc/sys/net/core/xfrm_acq_expires ]; then
    _________________________ ip-xfrm-state
    ip xfrm state
    _________________________ ip-xfrm-policy
    ip xfrm policy
    _________________________ cat-proc-net-xfrm_stat
    cat /proc/net/xfrm_stat
fi
_________________________ ip-l2tp-tunnel
if [ -d /sys/module/l2tp_core ]; then
    ip l2tp show tunnel
    _________________________ ip-l2tp-session
    ip l2tp show session
fi
if [ -d /sys/module/ip_vti ]; then
    _________________________ ip-tunnel
    ip -s tunnel show
fi
_________________________ /proc/crypto
if [ -r /proc/crypto ]; then
    cat /proc/crypto
fi
__________________________/proc/sys/net/core/xfrm-star
for i in /proc/sys/net/core/xfrm_*
do
    echo -n "${i}: "
    cat $i
done
_________________________ /proc/sys/net/ipsec-star
if [ -d /proc/sys/net/ipsec ]; then
    ( cd /proc/sys/net/ipsec && grep -E '^' * )
fi
_________________________ ipsec/status
ipsec whack --status
_________________________ ip-addr-list
ip addr list
_________________________ ip-route-list-table-all
ip route list table all
_________________________ ip-rule-list
ip rule list
_________________________ ipsec_verify
ipsec verify --nocolour
_________________________ ipsec/directory
ipsec --directory
_________________________ hostname/fqdn
hostname --fqdn
_________________________ hostname/ipaddress
hostname --ip-address
_________________________ uptime
uptime
_________________________ ps
# -i ppid picks up the header
ps alxwf | grep -E -i 'ppid|pluto|ipsec'
_________________________ ipsec/conf
ipsec readwriteconf --config /etc/ipsec.conf
_________________________ ipsec/secrets
cat /etc/ipsec.secrets | ipsec _secretcensor
_________________________ ipsec/listall
ipsec whack --listall
_________________________ nss/contents
certutil -L -d sql:/etc/ipsec.d
_________________________ nss/crls
crlutil -L -d sql:/etc/ipsec.d
if [ -n "${POLICIES}" ]; then
    for policy in ${POLICIES}/*
    do
	base=$(basename ${policy});
	_________________________ ipsec/policies/${base}
	cat ${policy}
    done
fi
_________________________ ipsec/ls-execdir
ls -l ${IPSEC_EXECDIR}
_________________________ /proc/net/dev
cat /proc/net/dev
_________________________ /proc/net/route
cat /proc/net/route
_________________________ /proc/sys/net/ipv4/ip_no_pmtu_disc
cat /proc/sys/net/ipv4/ip_no_pmtu_disc
_________________________ /proc/sys/net/ipv4/ip_forward
cat /proc/sys/net/ipv4/ip_forward
_________________________ /proc/sys/net/ipv4/tcp_ecn
cat /proc/sys/net/ipv4/tcp_ecn
_________________________ /proc/sys/net/ipv4/conf/star-rp_filter
( cd /proc/sys/net/ipv4/conf && grep -E '^' */rp_filter )
_________________________ /proc/sys/net/ipv4/conf/star-star-redirects
( cd /proc/sys/net/ipv4/conf && grep -E '^' */*redirects )
_________________________ /proc/sys/net/ipv4/tcp_window_scaling
cat /proc/sys/net/ipv4/tcp_window_scaling
_________________________ /proc/sys/net/ipv4/tcp_adv_win_scale
cat /proc/sys/net/ipv4/tcp_adv_win_scale
_________________________ uname-a
uname -a
_________________________ config-built-with
if [ -r /proc/config_built_with ]; then
    cat /proc/config_built_with
fi
_________________________ distro-release
for distro in /etc/redhat-release /etc/debian-release /etc/SuSE-release /etc/mandrake-release /etc/mandriva-release /etc/gentoo-release
do
    if [ -f ${distro} ]; then
        cat ${distro}
    fi

done
HAVE_IPTABLES=true
HAVE_NFTABLES=false
if test "${HAVE_NFTABLES}" = true; then
    nft list ruleset
elif test "${HAVE_IPTABLES}" = true; then
    _________________________ iptables
    if [ -e /proc/net/ip_tables_names ]; then
        if [ -r /sbin/iptables-save -o -r /usr/sbin/iptables-save ]; then
            iptables-save --modprobe=/dev/null
        else
            if [ -r /sbin/iptables -o -r /usr/sbin/iptables ]; then
                iptables -L -v -n
                _________________________ iptables-nat
                grep ^nat /proc/net/ip_tables_names >/dev/null 2>&1 && \
                iptables -t nat -L -v -n
                _________________________ iptables-mangle
                grep ^mangle /proc/net/ip_tables_names >/dev/null 2>&1 && \
                iptables -t mangle -L -v -n
            fi
        fi
    fi
else
    echo "no iptable or nftable support"
fi
_________________________ ip6tables
if [ -e ip6_tables_names ]; then
    if [ -r /sbin/ip6tables-save -o -r /usr/sbin/ip6tables-save ]; then
	ip6tables-save --modprobe=/dev/null
    else
	if [ -r /sbin/ip6tables -o -r /usr/sbin/ip6tables ]; then
	    [ -e /proc/net/ip_tables_names ] && ip6tables -L -v -n
	    # There is no IPv6 NAT yet (hopefully that will remain so)
			_________________________ ip6tables-mangle
			grep ^mangle /proc/net/ip6_tables_names >/dev/null 2>&1 && \
			    ip6tables -t mangle -L -v -n
	fi
    fi
fi
_________________________ /proc/modules
if [ -f /proc/modules ]; then
    cat /proc/modules
else
    echo "kernel without module support"
fi
_________________________ usr/src/linux/.config
if [ -f /proc/config.gz ]; then
    zcat /proc/config.gz | grep -E 'IPSEC|ESP|CONFIG_NET_KEY|CONFIG_INET|CONFIG_IP|_XFRM'
elif [ -f /lib/modules/$(uname -r)/build/.config ]; then
    cat /lib/modules/$(uname -r)/build/.config | grep -E 'IPSEC|ESP|CONFIG_NET_KEY|CONFIG_INET|CONFIG_IP|_XFRM'
else
    echo "no .config file found, cannot list kernel properties"
fi
if [ -f /etc/syslog.conf ]; then
    _________________________ etc/syslog.conf
    cat /etc/syslog.conf
fi
if [ -f /etc/syslog-ng/syslog-ng.conf ]; then
    _________________________ etc/syslog-ng/syslog-ng.conf
    cat /etc/syslog-ng/syslog-ng.conf
fi
if [ -f /etc/rsyslog.conf ]; then
    _________________________ etc/rsyslog.conf
    cat /etc/rsyslog.conf
fi
_________________________ etc/resolv.conf
cat /etc/resolv.conf
_________________________ lib/modules-ls
ls -ltr /lib/modules
_________________________ fipscheck
cat /proc/sys/crypto/fips_enabled
_________________________ /proc/ksyms-netif_rx
if [ -r /proc/ksyms ]; then
    grep -E netif_rx /proc/ksyms
else
    if [ -r /proc/kallsyms ]; then
	grep -E netif_rx /proc/kallsyms
    else
	echo "broken (redhat/fedora) 2.6 kernel without kallsyms"
    fi
fi

_________________________ kern.debug
if [ -f ${LOGS}/kern.debug ]; then
    tail -100 ${LOGS}/kern.debug
fi
_________________________ klog
dmesg | grep -E -i "xfrm|ipsec|esp"
_________________________ plog
if [ -x /usr/bin/journalctl -o -x /bin/journalctl ]; then
    journalctl -u ipsec.service --no-pager --since "24 hours ago" | \
    case "${1}" in
	--short)
	    tail -500
	    ;;
	*)
	    cat
	    ;;
    esac
else
    sed -n ${pline},'$'p ${plog} | \
	grep -E -i 'pluto' | \
	case "${1}" in
	    --short)
		tail -500
		;;
	    *)
		cat
		;;
	esac
fi
_________________________ date
date