Enhancements to the read-only version 0.1

readonlysd/Videos/.gitignore

@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore

readonlysd/config.txt

@@ -0,0 +1,30 @@
+###########################
+# ZS-GX1 Hacks Config File
+###########################
+
+## Silence Voices
+# YES = Silence Voices
+# NO = Keep Voices
+# Default = NO
+# Possibly causes some cameras to fail - use at your own risk
+
+VOICE=NO
+
+## Directory where log files are written
+logdir=/media
+
+## Directory where saved video files are written
+videoDir=/media/Videos
+## RTSP stream password
+rtspPasswd=
+
+## A minimum free space in Mb, which should be kept free on the SD. If this limit is reached, old video files are deleted.
+MinFreeSpaceMb=60
+
+## RTSP port forwarding to a given server via SSH settings
+# SSH username (authentication is via private key, private key should be placed on the SD: /.ssh/rsa.id
+sshTunnelUser=zoneminder
+# SSH server address. Server should be added to the known hosts file in (SD root)/.ssh/known_hosts
+sshTunnelServer=
+# SSH tunnel bind address, where the RTSP port could be opened for video stream
+sshTunnelBindAddress=localhost:8001

readonlysd/debug_cmd.sh

@@ -14,6 +14,11 @@ fi
 # confirm hack type
 touch /home/HACKSD
 
+# possibly needed but may not be
+mount --bind /media/hack/group /etc/group
+(sleep 70 && mount --bind /media/hack/passwd /etc/passwd) &
+mount --bind /media/hack/shadow /etc/shadow
+
 mkdir -p /home/busybox
 
 # install updated version of busybox
@@ -23,25 +28,25 @@ mount --bind /media/hack/busybox /bin/busybox
 # set new env
 mount --bind /media/hack/profile /etc/profile
 
-# possibly needed but may not be
-mount --bind /media/hack/group /etc/group
-mount --bind /media/hack/passwd /etc/passwd
-mount --bind /media/hack/shadow /etc/shadow
-
 # update hosts file to prevent communication
 mount --bind /media/hack/hosts.new /etc/hosts
 
+# include config
+. /media/config.txt
+
 # busybox httpd
-/home/busybox/httpd -p 8080 -h /media/hack/www
+/home/busybox/httpd -p 8080 -h /media/hack/www -r "Identify yourself:" -c /media/hack/httpd.conf
 
-# setup and install dropbear ssh server - no password login
-/media/hack/dropbearmulti dropbear -r /media/hack/dropbear_ecdsa_host_key -B
+# setup and install dropbear ssh server - password login. hack/shadow file should contain a password!
+mkdir /etc/dropbear
+ln -s /media/.ssh/authorized_keys /etc/dropbear/authorized_keys
+/media/hack/dropbearmulti dropbear -r /media/hack/dropbear_ecdsa_host_key -E >$logdir/dropbear.log 2>&1
 
 # start ftp server
 (/home/busybox/tcpsvd -E 0.0.0.0 21 /home/busybox/ftpd -w / ) &
 
 # sync the time
-(sleep 20 && /home/busybox/ntpd -q -p 0.uk.pool.ntp.org ) &
+(while true; do sleep 20 && /home/busybox/ntpd -q -p 0.uk.pool.ntp.org; done ) &
 
 # silence the voices - uncomment if needed
 #if [ ! -f /home/VOICE-orig.tgz ]; then
@@ -52,3 +57,25 @@ mount --bind /media/hack/hosts.new /etc/hosts
 
 #
 ############
+export PATH=$PATH:/home/busybox
+
+syslogd -O /media/syslog -b 4 -s 512
+
+if [ -n $sshTunnelUser -a -n $sshTunnelServer -a -n $sshTunnelBindAddress ]
+then
+  ln -s /media/.ssh/ /root/.ssh
+  /media/hack/ssh.sh         2>&1 | while IFS= read -r line; do echo "$(date) $line"; done >>$logdir/ssh_error.log    &
+  /media/hack/sshwatchdog.sh 2>&1 | while IFS= read -r line; do echo "$(date) $line"; done >>$logdir/ssh_watchdog.log &
+fi
+/media/hack/ffmpeg.sh    2>&1 | while IFS= read -r line; do echo "$(date) $line"; done >>$logdir/ffmpeg.log    &
+/media/hack/loadcheck.sh 2>&1 | while IFS= read -r line; do exho "$(date) $line"; done >>$logdir/load.log      &
+/media/hack/videomove.sh 2>&1 | while IFS= read -r line; do echo "$(date) $line"; done >>$logdir/videomove.log &
+(while true; do sleep 10; killall telnetd; if [ $? -eq 0 ]; then break; fi; done;) &
+
+#(while true; do ifconfig >>$logdir/ifconf.log 2>&1; iwconfig >>$logdir/ifconf.log 2>&1; iwlist ra0 scanning >>$logdir/ifconf.log 2>&1; done;) &
+#cp -f $logdir/wpa_supplicant.conf /home/wpa_supplicant.conf
+#cp -f /home/wpa_supplicant.conf $logdir/backup/
+#cp -f /home/config.cfg $logdir/backup/
+#cp -f /home/config.xml $logdir/backup/
+#cp -f /home/devParam.dat $logdir/backup/
+#cp -f $logdir/config/* /home/

readonlysd/hack/ffmpeg.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+############################################################
+## Starts ffmpeg process to save the video stream locally ##
+## Author: DBaluxa                                        ##
+############################################################
+
+# include config
+. /media/config.txt
+
+while true
+do
+  sleep 30
+  /media/hack/ffmpeg -i rtsp://admin:[email protected]:8001/0/av0 -vcodec copy -acodec copy -map 0 -f segment -segment_time 1200 -v error $videoDir/%04d.mkv </dev/null
+done
+

readonlysd/hack/httpd.conf

@@ -0,0 +1 @@
+/:ptz:$1$ySkNQ4l3$e0XVD1KUVue9He8gsldnD.

readonlysd/hack/loadcheck.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+############################################################
+# Load monitoring to workaround p2pcam CPU useage problems #
+############################################################
+
+maxload=12
+
+#Load monitoring starts only after 20 mins..
+sleep 1200
+
+#We check the load every 5 mins
+while true
+do
+  #Field 6 is the 15 min avg load
+  load=`uptime | cut -d "," -f 6`
+  echo $load
+
+  #Bash does not support float numbers, therefore we use awk
+  status=`echo $load HIGH LOW $maxload | awk '{if ($4 < $1) print $2; else print $3;}'`
+  if [ $status = HIGH ]
+  then
+    echo Load is high: $load, rebooting...
+    sleep 1
+    reboot
+  fi
+  sleep 300
+done
+

readonlysd/hack/ssh.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+##################################
+## Build SSH tunnel to a host   ##
+## Author: DBaluxa              ##
+##################################
+
+# include config
+. /media/config.txt
+
+HOME=/root
+tunnelPort=`echo $sshTunnelBindAddress | cut -d : -f 2`
+sshKillCmd='if [ `sudo netstat -tlpn | grep :'"$tunnelPort"' | grep sshd |wc -l` -gt 0 ]; then echo Killing sshd...; nohup sh -c "(sleep 5 ; sudo killall sshd ; sudo /etc/init.d/ssh restart)" >/dev/null 2>&1 &  fi; exit'
+
+rm /tmp/ssh_chg.log
+sleep 40
+
+while true
+do
+	date +%s >/tmp/ssh_chg.log
+
+	#Check if there is sticky non-working tunnel, and if there is one, restart SSHD to get rid of it
+        /media/hack/dropbearmulti ssh -i /media/.ssh/rsa.id $sshTunnelUser@$sshTunnelServer $sshKillCmd </dev/zero >/tmp/pfcheck.log
+        success=$?
+        cat /tmp/pfcheck.log
+        if [ $success -eq 0 ]
+        then 
+           echo Successfull testconnect, starting portfoward...
+           if [ `grep Killing /tmp/pfcheck.log | wc -l` -gt 0 ]
+           then
+             echo Waiting for SSHD restart...
+             sleep 10
+           fi
+	   /media/hack/dropbearmulti ssh -i /media/.ssh/rsa.id -T -R $sshTunnelBindAddress:localhost:8001 $sshTunnelUser@$sshTunnelServer "while true; do date +%s; sleep 40; done" </dev/zero >>/tmp/ssh_chg.log
+        fi
+	rm /tmp/ssh_chg.log
+	sleep 10
+done
+

readonlysd/hack/sshwatchdog.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+###########################################################################################################################
+## SSH watchdog process: periodically checks the SSH output for changes, if the output is stalled, kills the SSH process ##
+## Author DBaluxa                                                                                                        ##
+###########################################################################################################################
+
+re='^[0-9]+$'
+
+while true
+do
+  currdate=`date +%s`
+  #echo $currdate
+
+  if [ -e /tmp/ssh_chg.log ]
+  then 
+    lastdate=`/home/busybox/tail -n 1 /tmp/ssh_chg.log`
+
+    if [ -n $lastdate ] 
+    then 
+      delta=`expr $currdate - $lastdate`
+      #echo $delta
+
+      if [ $delta -gt 90 ] 
+      then
+        echo Current time: `date`, ssh last update: `date -d @$lastdate`
+        echo SSH is not responding till $delta secs, killing it...
+        kill -9 `ps ax |grep dropbearmulti |grep ssh | /home/busybox/cut -c 1-6`
+      fi
+    else
+      echo Last update date is not number: $lastdate
+    fi 
+  else
+    echo /tmp/ssh_chg.log does not exits!
+  fi
+  sleep 10
+done
+echo ERROR:Check process exited

readonlysd/hack/videomove.sh

@@ -0,0 +1,68 @@
+#!/bin/sh
+
+###################################################################################################
+## Moves ffmpeg's output the corresponding directory, and renames it to show the recording date. ##
+## Deletes old videos when there is not enough free space on the SD card.                        ##
+## Author: DBaluxa                                                                               ##
+###################################################################################################
+
+# include config
+. /media/config.txt
+files=$videoDir/*.mkv
+
+while true
+do
+  sleep 2
+
+  #Moving video files to directories if the time sync is OK
+  year=`date +%Y`
+  if [ $year != 1970 ]
+  then
+    day=`date +%Y-%m-%d`
+    ts=`date +%Y%m%d_%H_%M_%S`
+    if [ ! -d $videoDir/$day ] 
+    then 
+      mkdir $videoDir/$day
+    fi
+    for i in $files
+    do
+      if [ "$i" != "$files" ]  
+      then
+        mv $i $videoDir/$day/${ts}_`basename $i`
+      fi
+    done
+  fi
+
+  #Removing files when filesystem is full
+  freeMb=`df -Phm $videoDir | tail -1 | awk '{print $4}' | sed 's/G/ 1000/g' | sed 's/M/ 1/g'  |awk '{printf "%.0f\n", $1 * $2}'`
+  #echo Free space: $freeMb
+  if [ $freeMb -le $MinFreeSpaceMb ] 
+  then
+    for dir in `ls $videoDir`
+    do
+      if [ -d $videoDir/$dir ] 
+      then
+        dirEmpty=true
+        for file in `ls $videoDir/$dir`
+        do
+          freeMb=`df -Phm $videoDir | tail -1 | awk '{print $4}' | sed 's/G/ 1000/g' | sed 's/M/ 1/g'  |awk '{printf "%.0f\n", $1 * $2}'`
+          echo Free space: $freeMb
+          if [ $freeMb -le $MinFreeSpaceMb ]
+          then  
+            echo Removing $videoDir/$dir/$file
+            rm $videoDir/$dir/$file
+          else
+            dirEmpty=false
+            break;
+          fi
+        done
+        if [ $dirEmpty = true ] 
+        then
+          echo Removing empty directory $dir
+          rmdir $videoDir/$dir
+        fi
+      fi
+    done 
+    sync
+  fi 
+done