kalua: monitoring: screenshot() initial writeup

TODO.txt

@@ -1,12 +1,12 @@
+stopwatch_stop() timefile '/tmp/STOPWATCH_tmpCRON_LASTCALL'... not found - abort
+
 # switch: 'TP-LINK TL-WR841N/ND v9'
 
 # track_ap: store all hostnames from monitoring
 
 # tarball ohne /etc/init.d fuer server?
 
 
-# reverse_ssh fuer debian -> fernwartung
-
 # roaming: bad arping? -> IWLOG
 # roaming: DHCP: jede new MUSS gemeldet werden
 # roaming: checker: calc mac-sum without first hex and if differ only 1, its the same AP/bandroam
@@ -106,8 +106,6 @@ Wed Jul  6 17:48:46 2016 authpriv.notice dropbear[27654]: Password auth succeede
 
 # how to preserve: already set (correct) gps?
 
-# patch: uclient-fetch --quiet Vs. -q
-
 # monitoring: telegram: stoerung -> OK -> war von...bis
 
 # audioplayer: test buffer

openwrt-addons/etc/kalua/monitoring

@@ -28,5 +28,25 @@ _monitoring_url()
 	url="$url/?local=${date}&node=0&city=168&mac=${mac}&latlon=&hostname=${hostname}&update=0&wifidrv=&olsrver=&olsrrestartcount=0&olsrrestarttime=&portfw=&optimizenlq=&optimizeneigh=off&txpwr=0&wifimode=ap&channel=${channel}&mrate=auto&hw=${hardware}&frag=&rts=&pfilter=&gmodeprot=0&gmode=11ng&profile=${network}_ap&noise=-1&rssi=&distance=&version=${version}&reboot=1&up=${uptime}&load=${load}&forwarded=0&essid=${ssid}&bssid=&gw=1&gwnode=1&etx2gw=1&hop2gw=0&neigh=&users=&pubip=${mypubip}&sens=&wifiscan=&v1=${uname}&v2=&s1=${switch}&h1=${ram}&h2=&h4=2&h5=33&h6=4096&h7=337&d0=&d1=&n0=&i0=static&i1=wan&i2=${myip}%2f29&i3=0&i4=0&i5=${mygw}&r0=&w0=wlan0&w1=0"
 }
 
+_monitoring_screenshot()
+{
+	local file="$TMPDIR/screenshot.jpg"
+	local hash_old hash_new mac key dest
+
+	command -v 'scrot' >/dev/null && {
+		read -r hash_old <"$file"
 
+		export DISPLAY=:0
+	        scrot --quality 10 "$file"
 
+		hash_new="$( _file hash "$file" )"
+		[ "$hash_old" = "$hash_new" ] || {
+			read -r mac <'/www/monitoring.wifimac' && {
+				# root@intercity-vpn.de:/var/www/networks/liszt28/vds/
+				dest="$( uci get system.@vds[0].server )../settings/$mac.screenshot.jpg"
+				key="$( _ssh key_public_fingerprint_get keyfilename )"
+				scp -i "$key" "$file" "$dest"
+			}
+		}
+	}
+}

openwrt-addons/etc/kalua_init

@@ -9,13 +9,12 @@
 #  Maybe your own."
 
 while read -r LINE; do {	# e.g.	none /run/user tmpfs rw,nosuid,nodev,noexec...
-	case "$LINE" in		#	attribute 'noexec' does not matter...
-		*'size='[0-9]'k'*)	# and avoid very small discs
-		;;
-#		*'nosuid'*|*'noexec'*|*'nodev'*|*' /home/'*)
-		*'noexec'*|*' /home/'*)
+	case "$LINE" in
+		*'nosuid'*|*'noexec'*|*' /home/'*|*'size='[0-9]'k'*)
+				# avoid those (and very small disks)
+				# we only 'source' shellscripts and work with tempfiles
 		;;
-		*' tmpfs rw,'*)	#	...we only 'source' shellscripts (TODO: nosuid/noexec/nodev?)
+		*' tmpfs rw,'*)
 			set -- $LINE
 			mkdir -p "$2/kalua" 2>/dev/null && {
 				TMPDIR="$2/kalua"