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|
#!/bin/sh
# Copyright © 2011 Pau Escrich
# Contributors Jo-Philipp Wich <xm@subsignal.org>
# Roger Pueyo Centelles <roger.pueyo@guifi.net>
#
# 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.
#
# 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.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# The full GNU General Public License is included in this distribution in
# the file called "COPYING".
#
# This script gives information about bmx7
# Can be executed from a Linux shell: ./bmx7-info -s links
# Or from web interface (with cgi enabled): http://host/cgi-bin/bmx7-info?links
# If you ask for a directory you will get the directory contents in JSON format
BMX7_DIR="$(uci get bmx7.general.runtimeDir 2>/dev/null)" || BMX7_DIR="/var/run/bmx7/json"
case "${1:-}" in
-s)
QUERY="$2"
;;
*)
QUERY="${QUERY_STRING%%&*}"
QUERY="${QUERY%%=*}"
printf 'Content-type: application/json\n\n'
;;
esac
check_path() {
target="$1"
# Resolve real absolute path safely
resolved="$(cd "$(dirname -- "$target")" 2>/dev/null && pwd -P)/$(basename -- "$target")"
[ -e "$resolved" ] || return
}
print_mem() {
pid="$(pidof bmx7 2>/dev/null)" || return
[ -r "/proc/$pid/status" ] || return
vm=$(awk '/VmSize:/ {print $2" "$3}' "/proc/$pid/status")
printf '{ "memory": { "bmx7": "%s" }}' "$vm"
}
print_query() {
# If the query is a directory
[ -d "$BMX7_DIR/$1" ] &&
{
# If /all has not been specified
if [ -z "$QALL" ]; then
first=1
printf '{ "%s": [ ' "$1"
for f in "$BMX7_DIR"/$1; do
[ -e "$f" ] || continue
printf '{ "name": "%s" }' "$(tr -d '\n' < "$f")"
[ $first -eq 0 ] && printf ','
first=0
done
printf " ] }"
# If /all has been specified, print all the files together
else
first=1
printf "[ "
for entry in "$BMX7_DIR"/$1; do
[ -f "$entry" ] &&
{
[ $first -eq 0 ] && printf ','
printf "%s" "$(tr -d '\n' < "$entry")"
first=0
}
done
printf " ]"
fi
}
# If the query is a file, just print the file
[ -f "$BMX7_DIR/$1" ] && [ -s "$BMX7_DIR/$1" ] && cat "$BMX7_DIR/$1" && return 0 || return 1
}
if [ "${QUERY##*/}" = "all" ]; then
QUERY="${QUERY%/all}"
QALL=1
fi
case "$QUERY" in
neighbours)
QALL=1
printf '{ "neighbours": [ '
printf '{ "originators": '
print_query originators
printf '}, '
printf '{ "descriptions": '
print_query descriptions
printf "} ] }"
exit 0
;;
tunnels)
bmx7 -c --jshow tunnels /r=0
exit 0
;;
originators)
bmx7 -c --jshow originators /r=0
exit 0
;;
info)
printf '{ "info": [ '
print_query status && printf "," || printf '{ "status": "" },'
print_query interfaces && printf "," || printf '{ "interfaces": "" },'
print_query links && printf "," || printf '{ "links": "" },'
print_mem
printf "] }"
;;
*)
check_path "$BMX7_DIR/$QUERY"
print_query "$QUERY"
;;
esac
exit 0
|
