1356a55d77
* Sanitize hardware_id/location attributes, just like span_assignments * Allow control of keys via SPAN_ASSIGNMENTS_KEY or '-k <key>' option * In general, import most features/options from span_assignments Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com> Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
262 lines
5.9 KiB
Bash
Executable File
262 lines
5.9 KiB
Bash
Executable File
#! /bin/sh
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#
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# /usr/sbin/span_types
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#
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# This script can be used both from udev and
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# from the command line to manage PRI spans
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# type (E1/T1/J1).
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#
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# Span types can be set only *BEFORE* span are assigned.
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#
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# It uses a configuration file: $DAHDICONFDIR/span-types.conf
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# (default DAHDICONFDIR=/etc/dahdi)
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# (the format is documented inside that file)
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#
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# The first argument is an action:
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# "set" - actually write the setting to the driver
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# "list" - human-readable list of E1/T1/J1 types
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# "dumpconfig" - dump current assignments in a /etc/dahdi/span-types.conf
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# compatible format
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#
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# Without further arguments, it operates on all existing spans
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# With one or more sysfs dahdi_devices it is limited to those.
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#
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# We may use alternative "keys" for device matching:
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# * Available keys:
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# - "hwid" - Hardware id attribute from sysfs
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# - "@location" - Location attribute from sysfs (embeded inside '<>')
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# - "/devpath" - The sysfs absolute devpath
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#
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# * During "dumpconfig", for each device we take the first available key:
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# - The preference is: "hwid" or else "@location" or else "/devpath"
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# - This can be overriden via the SPAN_ASSIGNMENTS_KEY environment variable
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# or the '{-k|--key} key' command line option.
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#
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# Command line options:
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# - The '-h|--help' show a usage message.
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# - The '-k <key>|--key <key>' overrides the SPAN_ASSIGNMENTS_KEY environment
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# variable.
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#
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# Examples:
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# span_types list
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# span_types set # all devices
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# span_types set /sys/bus/dahdi_devices/devices/astribanks:xbus-00
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# span_types -k location dumpconfig
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#
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devbase='/sys/bus/dahdi_devices/devices'
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DAHDICONFDIR="${DAHDICONFDIR:-/etc/dahdi}"
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spantypes_conf="$DAHDICONFDIR/span-types.conf"
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SPAN_ASSIGNMENTS_KEY=${SPAN_ASSIGNMENTS_KEY:-hwid}
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usage() {
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echo >&2 "Usage: $0 [options] action [devpath ...]"
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echo >&2 " action:"
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echo >&2 " set - set spans to E1/T1 according to configuration"
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echo >&2 " list - human-readable list of all spans"
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echo >&2 " dumpconfig - dump current state as new configuration"
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echo >&2 ""
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echo >&2 " options:"
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echo >&2 " -h|--help - Show this help"
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echo >&2 " -k|--key <k> - Override prefered key during dumpconfig action"
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exit 1
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}
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# Parse command line options
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TEMP=`getopt -o hk: --long help,key: -n "$0" -- "$@"`
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if [ $? != 0 ]; then
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echo >&2 "Bad options"
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usage
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fi
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# Note the quotes around `$TEMP': they are essential!
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eval set -- "$TEMP"
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while true ; do
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case "$1" in
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-h|--help)
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usage
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;;
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-k|--key)
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SPAN_ASSIGNMENTS_KEY="$2"
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shift
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shift
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;;
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--)
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shift
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break
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;;
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*)
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echo "Internal error!"
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exit 1
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;;
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esac
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done
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if [ "$#" -eq 0 ]; then
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echo >&2 "Missing action argument"
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usage
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fi
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action="$1"
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shift
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# Validate SPAN_ASSIGNMENTS_KEY
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case "$SPAN_ASSIGNMENTS_KEY" in
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hwid|location|devpath)
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;;
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*)
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echo >&2 "Bad SPAN_ASSIGNMENTS_KEY='$SPAN_ASSIGNMENTS_KEY' (should be: hwid|location|devpath)"
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usage
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;;
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esac
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if [ ! -d "$devbase" ]; then
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echo >&2 "$0: Missing '$devbase' (DAHDI driver unloaded?)"
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exit 1
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fi
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# Use given devices or otherwise, all existing devices
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if [ "$#" -gt 0 ]; then
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DEVICES="$@"
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else
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DEVICES=`echo $devbase/*`
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fi
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# Beware of special characters in attributes
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attr_clean() {
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cat "$1" | tr -d '\n' | tr '!' '/' | tr -c 'a-zA-Z0-9/:.-' '_'
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}
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show_spantypes() {
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echo "# PRI span types (E1/T1/J1)"
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for device in $DEVICES
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do
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devpath=`cd "$device" && pwd -P`
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location='@'`attr_clean "$device/location"`
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hardware_id=`attr_clean "$device/hardware_id"`
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cat "$device/spantype" | while read st; do
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case "$st" in
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*:[ETJ]1)
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printf "%-10s %-20s %s\n" \
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"$st" "[$hardware_id]" "$location"
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;;
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esac
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done | sort -n
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done
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}
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dump_config() {
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echo '#'
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echo "# Autogenerated by $0 on `date`"
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echo "# Map PRI DAHDI devices to span types for E1/T1/J1"
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echo ''
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fmt="%-65s %s\n"
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printf "$fmt" '# @location/hardware_id' 'span_type'
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for device in $DEVICES
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do
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devpath=`cd "$device" && pwd -P`
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location=`attr_clean "$device/location"`
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hardware_id=`attr_clean "$device/hardware_id"`
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if [ "$SPAN_ASSIGNMENTS_KEY" = 'hwid' -a "$hardware_id" != '' ]; then
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id="$hardware_id"
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elif [ "$SPAN_ASSIGNMENTS_KEY" = 'location' -a "$location" != '' ]; then
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id="@$location"
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else
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id="$devpath"
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fi
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echo "# Device: [$hardware_id] @$location $devpath"
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cat "$device/spantype" | while read st; do
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case "$st" in
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*:[ETJ]1)
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printf "$fmt" "$id" "$st"
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;;
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*)
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#echo "# Skipped local span `echo $st | sed 's/:/ -- /'`"
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;;
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esac
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done | sort -n
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#echo ''
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done
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}
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# Allow comments and empty lines in config file
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filter_conf() {
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sed -e 's/#.*//' -e '/^[ \t]*$/d' "$spantypes_conf"
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}
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conf_spans() {
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hardware_id="$1"
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location="$2"
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filter_conf | (
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# Collect device spans
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# in a subshell, so $SPANS is not lost
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SPANS=''
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while read id spans; do
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# GLOBBING
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case "$location" in
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$id)
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#echo >&2 "match($id): $spans"
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SPANS="$SPANS $spans"
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;;
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esac
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case "$hardware_id" in
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$id)
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#echo >&2 "match([$id]): $spans"
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SPANS="$SPANS $spans"
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;;
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esac
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done
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echo "$SPANS"
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)
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}
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device_set_spantype() {
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device="$1"
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attr_file="$device/spantype"
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devpath=`cd "$device" && pwd -P`
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location='@'`attr_clean "$device/location"`
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hardware_id=`attr_clean "$device/hardware_id"`
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spanspecs=`conf_spans "$hardware_id" "$location"`
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#echo >&2 "MATCHED($device): $spanspecs"
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cut -d: -f1 "$attr_file" | while read spanno; do
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for sp in $spanspecs
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do
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s=`echo "$sp" | cut -d: -f1`
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v=`echo "$sp" | cut -d: -f2`
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case "$spanno" in
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$s)
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#echo >&2 "conf($attr_file): $spanno:$v"
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echo "$spanno:$v" > "$attr_file"
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;;
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esac
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done
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done
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}
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set_spantypes() {
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if [ ! -f "$spantypes_conf" ]; then
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echo >&2 "$0: Missing configuration '$spantypes_conf'"
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exit 1
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fi
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for device in $DEVICES
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do
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device_set_spantype "$device"
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done
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}
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case "$action" in
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list)
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show_spantypes
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;;
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dumpconfig)
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dump_config
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;;
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set)
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set_spantypes
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;;
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*)
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usage
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;;
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esac
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