#!/bin/bash
# This file is part of Cachewall.
# Licensed under Cachewall License Agreement. See: http://cachewall.com/LICENSE
#
# Gathers Cachewall logs and system information troubleshooting purposes.

[ "$UID" -eq 0 ] || { echo "$0 must be run as root"; exit 1; }

INSTALL_DIR=/usr/local/xvarnish
REP_NAME=$(echo report_`uname -n`_`date -u +%FT%TZ` | tr -cd '[[:alnum:]]_')
REP_DIR=$INSTALL_DIR/tmp/$REP_NAME

echo -n "Creating report.. "

[ ! -d "$REP_DIR" ] && mkdir -p "$REP_DIR" && cd "$REP_DIR" || exit 3

# varnishd shm and syslog messages
if ps aux | grep -q varnishd
then
    varnishlog -d -w ./varnishlog.bin
fi

mkdir ./syslog
for logfn in /var/log/messages*
do
    logfn=${logfn##*/}
    zgrep -E 'hitch|varnishd' /var/log/$logfn > syslog/$logfn
    [ -s "syslog/$logfn" ] || /bin/rm -f syslog/$logfn
done

# files
cp $INSTALL_DIR/settings ./settings
cp $INSTALL_DIR/var/exclusions.json ./exclusions.json
cp $INSTALL_DIR/var/ratelimits.json ./ratelimits.json

# directories
cp -R /var/log/xvarnish ./logs
cp -R "$INSTALL_DIR/varnish.conf.d" ./varnish.conf.d
cp -R "$INSTALL_DIR/waf.conf.d" ./waf.conf.d

# system information
rep_log() { [ $# -eq 0 ] && set -- $(</dev/stdin); echo -e "$@" >> $LOGFILE; }

LOGFILE=system.txt
    rep_log "Date: $(date -R)"
    rep_log "System: $(uname -a)"
    rep_log "Packages:"
    rpm -qa '*varnish*' 2>&1 | rep_log

if [ -f /var/cpanel/cpanel.config ]
then
    rep_log "cPanel $(/usr/local/cpanel/cpanel -V)"

    if [ -f /etc/cpanel/ea4/is_ea4 ]
    then
        rep_log "EasyApache 4 is configured"
        httpdbin=/usr/sbin
    else
        rep_log "EasyApache 3 is configured"
        httpdbin=/usr/local/apache/bin
    fi

    if [ -d /usr/local/lsws ]
    then
        if [ -f "$httpdbin/httpd_ls_bak" ]
        then
            rep_log "LiteSpeed Web Server installed (enabled)"
        else
            rep_log "LiteSpeed Web Server installed (disabled)"
        fi
    fi

    rep_log "Apache:"
        httpd -V 2>&1 | rep_log
        httpd -M 2>&1 | rep_log
else
    rep_log "cPanel configuration file does not exist."
fi

# limits
LOGFILE=ulimit.txt
    rep_log "root:"
    su -c "ulimit -a" -s /bin/bash root | rep_log

    rep_log "varnish:"
    su -c "ulimit -a" -s /bin/bash varnish | rep_log

# interfaces
LOGFILE=interfaces.txt
    ip addr 2>&1 | rep_log

# processes
LOGFILE=processes.txt
    s="varnish|xvhealth|xvstats|stunnel|hitch|xvbeat|xvncsa|nginx|lsws|lshttpd"
    ps aux | egrep -i "$s" 2>&1 | rep_log

# network sockets
LOGFILE=network.txt
    for port in 80 82 443 445 6086 6087
    do
        rep_log "$port:"
            lsof -Pni :$port -sTCP:LISTEN | rep_log
    done

# create tarball, cleanup
cd $REP_DIR && tar -zcf ../$REP_NAME.tgz . && echo "done" || exit 5
cd .. && /bin/rm -rf $REP_NAME || exit 6

echo -e "Provide the archive below in your correspondence with support. You" \
        "may simply move it to a web-accessible directory and provide a link."
echo -e "\n$REP_DIR.tgz"