Antifurto

This project is a security camera implemented in C++. It is optimized for Raspberry PI, but it can potentially run on any Linux machine with an USB camera. Porting it to Windows would be a bit more involved.

The antifurto project is essentially a security camera that allows to monitor what happens through the lenses of a single camera. When the camera detects motion above a certain threshold, it sends notifications through WhatsApp and emails and starts to record pictures. These are in turn saved to the local disk and uploaded to a Dropbox folder. There is also a web portal (optimized for desktop and mobile browsers) from which you can start and stop the monitoring, a live view from which you can see images in real time and an archive page for the past recordings. It's not possible to combine multiple cameras together: single camera, single website.

For more details on the architecture see the blog post Antifurto: home made security camera.

Build

Install dependencies (on Debian or Ubuntu):

> sudo apt-get install boost-dev libzmq3-dev libfcgi-dev opencv-dev cmake g++

Build:

> mkdir build
> cd build
> cmake ..
> make

The build for Raspberry PI requires cross compilation on your laptop or native compilation (slow) directly in the Raspberry PI. For the first options I provided a toolchain file as an example in toolchain-pi.cmake. You'll need to customize it a bit for your environment.

Webserver install

See https://wiki.ubuntu.com/Lighttpd+PHP

> sudo apt-get install lighttpd php5-cgi
> sudo lighty-enable-mod fastcgi
> sudo lighty-enable-mod fastcgi-php
> sudo lighty-enable-mod auth
> sudo service lighttpd force-reload

Copy the web interface in /var/www:

> cp -r webpages/* /var/www/

Copy the fcgi frontend:

> sudo mkdir /var/www/webapps/
> sudo cp /build/dir/frontend/antifurto_fcgi /var/www/webapps/

Link the archive dir:

> ln -s /path/to/archive /var/www/archive/pics

Apply configuration:

> cd /etc/lighttpd/
> sudo cp lighttpd.conf lighttpd.conf.bak

Use one of the following options: option 1: patch

    > diff -Naur lighttpd.conf /path/to/project/config/lighttpd.conf.patched > patch
    > sudo patch lighttpd < patch

option 2: merge

    > sudo merge lighttpd.conf /.../lighttpd.conf.original /.../lighttpd.conf.patched

option 3: overwrite

    > sudo cp /.../lighttpd.conf.patched lighttpd.conf

Patch in the same way the file /etc/lighttpd/conf-enabled/05-auth.conf:

Password file:

> sudo apt-get install apache2-utils
> htdigest -c lighttpd.user.htdigest 'admin area' admin
  type a password for the user
> sudo mv lighttpd.user.htdigest /etc/lighttpd/
> sudo chown root:root /etc/lighttpd/lighttpd.user.htdigest

Restart the service:

> sudo service lighttpd restart

Add permissions to www-data to send signals to antifurto:

> sudo visudo -f /etc/sudoers.d/antifurto
  add the following line to the file
    www-data myhost = (root) NOPASSWD: /usr/bin/killall
  where myhost is the hostname (e.g. rasberry)

Send mail install

See: https://rtcamp.com/tutorials/linux/ubuntu-postfix-gmail-smtp/

Install packages:

> sudo apt-get install postfix mailutils libsasl2-2 ca-certificates libsasl2-modules

In configuration, select "Internet Site" and an hostname. Then configure postfix to use your mail address to send mails. You can use for example gmail.

Add these lines to /etc/postfix/main.cf:

relayhost = [smtp.gmail.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_tls_CAfile = /etc/postfix/cacert.pem
smtp_use_tls = yes

Then set your usename and password in this way:

> echo "[smtp.gmail.com]:587    USERNAME@gmail.com:PASSWORD" > /etc/postfix/sasl_passwd

Fix permissions:

> sudo chmod 400 /etc/postfix/sasl_passwd

Validate certificates:

> cat /etc/ssl/certs/Thawte_Premium_Server_CA.pem | sudo tee -a /etc/postfix/cacert.pem

Reload postfix:

> sudo postmap /etc/postfix/sasl_passwd
> sudo /etc/init.d/postfix reload

Antifurto install

Setup init script:

- edit /etc/rc.local
- add this line before "exit 0"
  /path/to/antifurto &
> sudo cp /path/to/project/script/init.sh /etc/init.d/antifurto
> cd /etc/init.d/
> sudo chmod 755 antifurto
> sudo update-rc.d antifurto defaults

Install zeromq dependencies:

> sudo apt-get install libzmq3

Install fcgi lib:

> sudo apt-get install libfcgi

Logrotate script

> cp /path/to/project/config/antifurto_logrotate /etc/logrotate.d/antifurto

Setup core file limit:

• edit /etc/rc.local
• add this line before the "antifurto" startup command:

  ulimit -c unlimited

• then create:

> sudo mkdir /var/log/dumps

• edit /etc/sysctl.conf
• add this line at the end (if not already present)

  kernel.core_pattern=/var/log/dumps/core.%e.%p

Cron script:

• copy crontab script

> sudo cp /path/to/project/config/antifurto_cron /etc/cron.d/antifurto