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      1 #
      2 #
      3 # Copyright (C) 2012 The Android Open Source Project
      4 #
      5 # Licensed under the Apache License, Version 2.0 (the "License");
      6 # you may not use this file except in compliance with the License.
      7 # You may obtain a copy of the License at
      8 #
      9 #      http://www.apache.org/licenses/LICENSE-2.0
     10 #
     11 # Unless required by applicable law or agreed to in writing, software
     12 # distributed under the License is distributed on an "AS IS" BASIS,
     13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 # See the License for the specific language governing permissions and
     15 # limitations under the License.
     16 #
     17 #
     18 # Script that turns on useful logging for wpa_supplicant
     19 
     20 
     21 WPA_LEVEL_LIST="excessive msgdump debug info warning error"
     22 
     23 usage(){
     24   echo "
     25 Usage: wpa_debug [level]|[--reset]|[--help][--list_valid_levels]
     26 
     27   wpa_debug sets the debug level of wpa_supplicant.
     28   Current debug level is displayed if no parameters are provided
     29 
     30   level: The level is the level we want to set the debugging level to. The valid
     31          levels can be viewed by using the --list_valid_levels flag
     32 
     33          eg: wpa_debug msgdump
     34            Sets the wpa_supplicant logging level to msgdump
     35 
     36   --reset : Resets the level to 'info'
     37 
     38   --help : Displays this output
     39 
     40   --list_valid_levels: Displays the valid levels wpa_supplicant can be set to
     41 "
     42 }
     43 
     44 CMD_FLAG="<<cmd>>"
     45 
     46 WPA_CMD="dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply /fi/w1/wpa_supplicant1 org.freedesktop.DBus.Properties.$CMD_FLAG string:fi.w1.wpa_supplicant1 string:DebugLevel"
     47 
     48 # Returns whether or not $2 exists in $1 where $1 is a space
     49 # separated list of tags
     50 is_valid_tag(){
     51   expr " $1 " : ".* $2 .*"> /dev/null
     52 }
     53 
     54 get_wpa_logging(){
     55   set_cmd="`echo $WPA_CMD | sed "s/$CMD_FLAG/Get/"`"
     56   $set_cmd | sed -e '/string/!d; s/[[:space:]]\+/ /g' | cut -d "\"" -f 2
     57 }
     58 
     59 set_wpa_logging(){
     60   if ! is_valid_tag "$WPA_LEVEL_LIST" "$1"; then
     61     return 1
     62   fi
     63 
     64   if [ $1 = `get_wpa_logging` ]; then
     65     return 1
     66   fi
     67 
     68   set_cmd="`echo $WPA_CMD | sed "s/$CMD_FLAG/Set/"` variant:string:$1"
     69   $set_cmd
     70 }
     71 
     72 
     73 if [ $# -gt 0 ]; then
     74   for param in "$@"; do
     75     case $param in
     76     --reset)
     77       set_wpa_logging "info"
     78       ;;
     79     --list*)
     80       echo "Valid levels are: `echo $WPA_LEVEL_LIST| sed 's/ /, /g'`"
     81       exit 0
     82       ;;
     83     --help|--*)
     84       usage
     85       exit 0
     86       ;;
     87     *)
     88       old_level="`get_wpa_logging`"
     89       set_wpa_logging "$param"
     90       echo "Old wpa level: $old_level"
     91       ;;
     92     esac
     93   done
     94 fi
     95 
     96 echo "Current wpa level: `get_wpa_logging`"
     97 
     98