1 # Start, reconfigure and stop wpa_supplicant per wireless interface. 2 # This is needed because wpa_supplicant lacks hotplugging of any kind 3 # and the user should not be expected to have to wire it into their system 4 # if the base system doesn't do this itself. 5 6 if [ -z "$wpa_supplicant_conf" ]; then 7 for x in \ 8 /etc/wpa_supplicant/wpa_supplicant-"$interface".conf \ 9 /etc/wpa_supplicant/wpa_supplicant.conf \ 10 /etc/wpa_supplicant-"$interface".conf \ 11 /etc/wpa_supplicant.conf \ 12 ; do 13 if [ -s "$x" ]; then 14 wpa_supplicant_conf="$x" 15 break 16 fi 17 done 18 fi 19 : ${wpa_supplicant_conf:=/etc/wpa_supplicant.conf} 20 21 wpa_supplicant_ctrldir() 22 { 23 local dir 24 25 dir=$(key_get_value "[[:space:]]*ctrl_interface=" \ 26 "$wpa_supplicant_conf") 27 dir=$(trim "$dir") 28 case "$dir" in 29 DIR=*) 30 dir=${dir##DIR=} 31 dir=${dir%%[[:space:]]GROUP=*} 32 dir=$(trim "$dir") 33 ;; 34 esac 35 printf %s "$dir" 36 } 37 38 wpa_supplicant_start() 39 { 40 local dir err errn 41 42 # If the carrier is up, don't bother checking anything 43 [ "$ifcarrier" = "up" ] && return 0 44 45 # Pre flight checks 46 if [ ! -s "$wpa_supplicant_conf" ]; then 47 syslog warn \ 48 "$wpa_supplicant_conf does not exist" 49 syslog warn "not interacting with wpa_supplicant(8)" 50 return 1 51 fi 52 dir=$(wpa_supplicant_ctrldir) 53 if [ -z "$dir" ]; then 54 syslog warn \ 55 "ctrl_interface not defined in $wpa_supplicant_conf" 56 syslog warn "not interacting with wpa_supplicant(8)" 57 return 1 58 fi 59 60 wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 && return 0 61 syslog info "starting wpa_supplicant" 62 driver=${wpa_supplicant_driver:+-D}$wpa_supplicant_driver 63 err=$(wpa_supplicant -B -c"$wpa_supplicant_conf" -i"$interface" \ 64 "$driver" 2>&1) 65 errn=$? 66 if [ $errn != 0 ]; then 67 syslog err "failed to start wpa_supplicant" 68 syslog err "$err" 69 fi 70 return $errn 71 } 72 73 wpa_supplicant_reconfigure() 74 { 75 local dir err errn 76 77 dir=$(wpa_supplicant_ctrldir) 78 [ -z "$dir" ] && return 1 79 if ! wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1; then 80 wpa_supplicant_start 81 return $? 82 fi 83 syslog info "reconfiguring wpa_supplicant" 84 err=$(wpa_cli -p "$dir" -i "$interface" reconfigure 2>&1) 85 errn=$? 86 if [ $errn != 0 ]; then 87 syslog err "failed to reconfigure wpa_supplicant" 88 syslog err "$err" 89 fi 90 return $errn 91 } 92 93 wpa_supplicant_stop() 94 { 95 local dir err errn 96 97 dir=$(wpa_supplicant_ctrldir) 98 [ -z "$dir" ] && return 1 99 wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 || return 0 100 syslog info "stopping wpa_supplicant" 101 err=$(wpa_cli -i"$interface" terminate 2>&1) 102 errn=$? 103 if [ $errn != 0 ]; then 104 syslog err "failed to start wpa_supplicant" 105 syslog err "$err" 106 fi 107 return $errn 108 } 109 110 if [ "$ifwireless" = "1" ] && \ 111 type wpa_supplicant >/dev/null 2>&1 && \ 112 type wpa_cli >/dev/null 2>&1 113 then 114 case "$reason" in 115 PREINIT) wpa_supplicant_start;; 116 RECONFIGURE) wpa_supplicant_reconfigure;; 117 DEPARTED) wpa_supplicant_stop;; 118 esac 119 fi 120
