#!/bin/sh
#------------------------------------------------------------------------------
# /usr/local/bin/registerc_once - convey system information        __FLI4LVER__
#
# Last Update:  $Id$
#------------------------------------------------------------------------------

CONFIG=/var/run/registerc.conf
# keep synchronised with opt/srv/www/admin/status_register.cgi
DATA=/var/run/registerc.last
LOG=/var/log/registerc.log
URL='https://register.fli4l.de/cgi-bin/registerd.cgi'
TIMESTAMP_FORMAT="%Y%m%dT%H%M%S"

# $1 = error message
log_error()
{
    logmsg registerc daemon.err "$1"
}

# $1 = error message
log_info()
{
    logmsg registerc daemon.info "$1"
}

# Generates a text file containing information about
# the current system and the activated OPTs.
#####################################################
# Data format:
# ------------
# Each element is represented by a single line.
# The first character describes the type of the file.
#
# Type | Parameters
# ---------------------------------------------------
# F    | <format> of the following data (currently 1)
# I    | <ID> uniquely representing this system
# T    | <timestamp> in UTC, YYYYmmdd'T'HHMMSS
# V    | <system> <version>
# K    | <kernel version>
# A    | <architecture>
# P    | <package> <OPT>
#####################################################
generate_data()
{
    packages=
    current_package=
    package_written=

    # the data format used
    echo "F 1"

    # the unique ID of this system
    echo "I $FLI4L_UUID"

    # the current timestamp
    echo "T $(date -u +"$TIMESTAMP_FORMAT")"

    # the attributes of this system (version, revision)
    echo "V $PRETTY_NAME"

    # the kernel version
    echo "K $(uname -r)"

    # the architecture
    echo "A $ARCH"

    # the activated OPTs, together with the containing package
    while read line
    do
        if echo "$line" | grep -q "^# package"
        then
            current_package=$(echo "$line" | sed -n "s/^# package '\\(.*\\)'\$/\\1/p")
        elif echo "$line" | grep -q "^OPT_.*=['\"]yes['\"]\$"
        then
            opt=$(echo "$line" | sed -n "s/^\\(OPT_.*\\)=.*\$/\1/p")
            echo "P $current_package $opt"
        fi
    done
}

# Sends the data to a server.
send_data()
{
    curl -X POST -L --data-binary @- -s -S "$URL"
}

if [ ! -f "$CONFIG" ]
then
    log_error "Configuration file $CONFIG not found"
    exit 1
fi

. "$CONFIG"

generate_data < /etc/rc.cfg > "$DATA"
result=$(send_data < "$DATA" 2>&1)
if [ -z "$result" ]
then
    log_info "data successfully sent"
    exit 0
else
    log_error "data transfer failed: $result"
    exit 1
fi