network: Experimental support for wireless access points.

[people/arne_f/network.git] / functions.wireless

diff --git a/functions.wireless b/functions.wireless
new file mode 100644 (file)
index 0000000..7cfd7f1
--- /dev/null
+++ b/functions.wireless
@@ -0,0 +1,278 @@
+#!/bin/bash
+# XXX header missing
+
+PHY_DIR="/sys/class/ieee80211"
+
+function phy_dir() {
+       local phy=${1}
+
+       echo "${PHY_DIR}/${phy}"
+}
+
+function phy_exists() {
+       local phy=${1}
+
+       [ -d "$(phy_dir ${phy})" ]
+}
+
+function phy_list() {
+       local phy
+       for phy in $(phy_dir)/*; do
+               phy=$(basename ${phy})
+               echo "${phy}"
+       done
+}
+
+function phy_get() {
+       local info=${1}
+
+       local phy
+
+       if listmatch ${info} $(phy_list); then
+               phy="${info}"
+       elif device_exists ${info}; then
+               info=$(device_get_address ${info})
+       fi
+
+       if [ -z "${phy}" ] && mac_is_valid ${info}; then
+               local i
+               for i in $(phy_list); do
+                       if [ "${info}" = "$(phy_get_address ${i})" ]; then
+                               phy=${i}
+                               break
+                       fi
+               done
+       fi
+
+       if [ -z "${phy}" ]; then
+               return ${EXIT_ERROR}
+       fi
+
+       echo "${phy}"
+       return ${EXIT_OK}
+}
+
+function phy_get_address() {
+       local phy=${1}
+
+       assert isset phy
+
+       cat $(phy_dir ${phy})/macaddress 2>/dev/null
+}
+
+function wireless_create() {
+       local device=${1}
+       local phy=$(phy_get ${2})
+       local type=${3}
+       local mac=${4}
+
+       assert isset device
+       assert isset phy
+       assert isset type
+
+       isset mac || mac=$(mac_generate)
+
+       assert phy_exists ${phy}
+       assert isoneof type managed __ap
+
+       iw phy ${phy} interface add ${device} type ${type}
+
+       if device_exists ${device}; then
+               device_set_address ${device} ${mac}
+       fi
+
+       device_set_up ${device}
+}
+
+function wireless_remove() {
+       local device=${1}
+
+       assert device_exists ${device}
+
+       device_set_down ${device}
+
+       iw dev ${device} del
+}
+
+function wireless_set_channel() {
+       local device=${1}
+       local channel=${2}
+
+       assert isset device
+       assert device_exists ${device}
+       assert isset channel
+
+       iw dev ${device} set channel ${channel} $@
+}
+
+function hostapd_init() {
+       mkdir -p $(hostapd_config_dir)
+}
+
+init_register hostapd_init
+
+function hostapd_config_dir() {
+       local device=${1}
+       
+       echo "${RUN_DIR}/hostapd/${device}"
+}
+
+function hostapd_config_write() {
+       local device=${1}
+       shift
+
+       assert device_exists ${device}
+
+       local broadcast_ssid
+       local channel
+       local country_code
+       local mode
+       local ssid
+
+       while [ $# -gt 0 ]; do
+               case "${1}" in
+                       --broadcast-ssid=*)
+                               broadcast_ssid=${1#--broadcast-ssid=}
+                               ;;
+                       --channel=*)
+                               channel=${1#--channel=}
+                               ;;
+                       --country-code=*)
+                               country_code=${1#--country-code=}
+                               ;;
+                       --mode=*)
+                               mode=${1#--mode=}
+                               ;;
+                       --ssid=*)
+                               ssid=${1#--ssid=}
+                               ;;
+                       *)
+                               warning_log "Ignoring unknown argument '${1}'."
+                               ;;                      
+               esac
+               shift
+       done
+
+       assert isset broadcast_ssid
+       assert isbool broadcast_ssid
+
+       assert isset channel
+       assert isinteger channel
+
+       assert isset country_code
+       assert isset mode
+       assert isset ssid
+
+       local ignore_broadcast_ssid
+       if enabled broadcast_ssid; then
+               ignore_broadcast_ssid="0"
+       else
+               ignore_broadcast_ssid="1"
+       fi
+
+       cat <<EOF
+### Hostapd configuration for ${device}
+
+# Interface configuration
+driver=nl80211
+interface=${device}
+
+# Wireless configuration
+channel=${channel}
+country_code=${country_code}
+hw_mode=${mode}
+ignore_broadcast_ssid=${ignore_broadcast_ssid}
+ssid=${ssid}
+
+# Logging options
+logger_syslog=-1
+logger_syslog_level=2
+logger_stdout=-1
+logger_stdout_level=2
+
+# Dump file
+dump_file=$(hostapd_config_dir ${device}/dump
+
+ctrl_interface=/var/run/hostapd
+ctrl_interface_group=0
+EOF
+
+       return ${EXIT_OK}
+}
+
+function hostapd_start() {
+       local device=${1}
+       shift
+
+       assert isset device
+
+       local config_dir=$(hostapd_config_dir ${device})
+       mkdir -p ${config_dir}
+
+       local config_file=${config_dir}/config
+       hostapd_config_write ${device} $@ > ${config_file}
+
+       hostapd -dd -B -P ${config_dir}/pid ${config_file}
+       local ret=$?
+
+       case "${ret}" in
+               0)
+                       log DEBUG "Hostapd was successfully started for '${device}'."
+                       return ${EXIT_OK}
+                       ;;
+               1)
+                       error_log "Could not start hostapd properly for '${device}'."
+                       
+                       error_log "Configuration file dump:"
+                       local line
+                       while read line; do
+                               error_log "  ${line}"
+                       done < ${config_file}
+
+                       return ${EXIT_ERROR}
+                       ;;
+       esac
+}
+
+function hostapd_stop() {
+       local device=${1}
+
+       assert isset device
+
+       local pid=$(hostapd_get_pid ${device})
+
+       if isset pid; then
+               process_kill ${pid}
+       else
+               warning_log "Could not find pid file for hostapd process running for ${device}."
+       fi
+
+       rm -rf $(hostapd_config_dir ${device})
+}
+
+function hostapd_get_pid() {
+       local device=${1}
+
+       assert isset device
+
+       local pid_file="$(hostapd_config_dir ${device})/pid"
+
+       [ -e "${pid_file}" ] || return ${EXIT_ERROR}
+
+       cat ${pid_file} 2>/dev/null
+       return ${EXIT_OK}
+}
+
+function hostapd_is_running() {
+       local device=${1}
+
+       assert isset device
+
+       local pid=$(hostapd_get_pid ${device})
+
+       if isset pid && [ -d "/proc/${pid}" ]; then
+               return ${EXIT_OK}
+       fi
+
+       return ${EXIT_ERROR}
+}