Installation

Debian/Ubuntu

Dependencies:

• php >= 5.6
• librsvg2-bin (rsvg-convert)
• pdftk
• imagemagick
• potrace
• ghostcript
• gpg

Installing dependencies:

sudo apt-get install php librsvg2-bin pdftk imagemagick potrace ghostscript locales gpg

Getting the source code:

git clone https://github.com/24eme/signaturepdf.git

To run it:

php -S localhost:8000 -t public

PHP Configuration

upload_max_filesize = 24M # Maximum size of the PDF file to sign
post_max_size = 24M # Maximum size of the PDF file to sign
max_file_uploads = 201 # Maximum number of pages in the PDF, here 200 pages + the original PDF

Apache Configuration

DocumentRoot /path/to/signaturepdf/public
<Directory /path/to/signaturepdf/public>
    Require all granted
    FallbackResource /index.php
    php_value max_file_uploads 201
    php_value upload_max_filesize 24M
    php_value post_max_size 24M
</Directory>

Troubleshooting

The translation is not done

The language remains in English in the interface.

Check that your locales are properly installed:

sudo apt-get install locales
sudo dpkg-reconfigure locales

Then if you use apache, you have to restart it:

sudo service apache2 restart

Deploy with Docker

Building the image

docker build -t signaturepdf .

Running a container

docker run -d --name=signaturepdf -p 8080:80 signaturepdf

localhost:8080

Configuration

The following variables can be used to configure the deployment:

Variable	description	exemple	defaut
SERVERNAME	Deployment URL	pdf.24eme.fr	localhost
UPLOAD_MAX_FILESIZE	Maximum size of the PDF file to sign	48M	24M
POST_MAX_SIZE	Maximum size of the PDF file to sign	48M	24M
MAX_FILE_UPLOADS	Maximum number of pages in the PDF, here 200 pages + the original PDF	401	201
PDF_STORAGE_PATH	Path where uploaded PDF files can be stored	/data	/data
DISABLE_ORGANIZATION	Disable the Organize route	true	false
PDF_DEMO_LINK	Show, hide, or change the demo PDF link	false, link or relative path	true
DEFAULT_LANGUAGE	Default language for the application	en_US.UTF-8	fr_FR.UTF-8
PDF_STORAGE_ENCRYPTION	Activate PDF storage encryption option (GPG needs to be installed)	true	false

docker run -d --name=signaturepdf -p 8080:80 -e SERVERNAME=pdf.example.org -e UPLOAD_MAX_FILESIZE=48M -e POST_MAX_SIZE=48M -e MAX_FILE_UPLOADS=401 -e PDF_STORAGE_PATH=/data signaturepdf

Alpine

Here is a script to install the solution on Linux Alpine (tested with version 3.15). Remember to edit the "domain" variable at the beginning of the script to match the URL it will be called with.

The main components are:

• php 8 + php-fpm
• Nginx
• pdftk ("manual" installation requiring openjdk8)
• imagick
• potrace
• librsvg
• ghostscript
• gpg

What the script does:

• Installs dependencies
• Configures php and php-fpm
• Configures Nginx
• Configures the config.ini
• Clones the repo

#!/bin/sh

domain='sign.example.com'

apk update
apk add bash nginx git php8 php8-fpm php8-session php8-gd php8-fileinfo openjdk8 imagemagick potrace librsvg locales gpg ghostcript

cd /tmp
wget https://gitlab.com/pdftk-java/pdftk/-/jobs/924565145/artifacts/raw/build/libs/pdftk-all.jar
mv pdftk-all.jar pdftk.jar

cat <<EOF >>pdftk
#!/usr/bin/env bash
/usr/bin/java -jar "\$0.jar" "\$@"
EOF

chmod 775 pdftk*
mv pdftk* /usr/bin

sed -i 's/user = nobody/user = nginx/g' /etc/php8/php-fpm.d/www.conf
sed -i 's/;listen.owner = nginx/listen.owner = nginx/g' /etc/php8/php-fpm.d/www.conf

sed -i 's/post_max_size = 8M/post_max_size = 50M/g' /etc/php8/php.ini
sed -i 's/upload_max_filesize = 2M/upload_max_filesize = 50M/g' /etc/php8/php.ini
sed -i 's/max_file_uploads = 20 /max_file_uploads = 300/g' /etc/php8/php.ini

service php-fpm8 restart

cd /var/www
git clone https://github.com/24eme/signaturepdf.git

cat <<EOF >>/etc/nginx/http.d/signaturepdf.conf
server {

        listen 80 default_server;
        listen [::]:80 default_server;

        server_name ${domain};

        client_max_body_size 0;

        root /var/www/signaturepdf/public/;

        index           index.php index.html;

        location / {
        # URLs to attempt, including pretty ones.
        try_files   \$uri \$uri/ /index.php?\$query_string;
        }

        location ~ [^/]\.php(/|$) {
                root /var/www/signaturepdf/public/;

                fastcgi_split_path_info  ^(.+\.php)(/.+)$;
                fastcgi_index            index.php;
                include                  fastcgi_params;

                fastcgi_buffer_size 128k;
                fastcgi_buffers 128 128k;
                fastcgi_param   PATH_INFO       \$fastcgi_path_info;
                fastcgi_param   SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
                fastcgi_pass 127.0.0.1:9000;

        }

}
EOF

rm /etc/nginx/http.d/default.conf
rm -R /var/www/localhost

service nginx restart

rc-update add nginx
rc-update add php-fpm8

mkdir /var/www/signaturepdf/tmp
chown nginx /var/www/signaturepdf/tmp

cat <<EOF >>/var/www/signaturepdf/config/config.ini
PDF_STORAGE_PATH=/var/www/signaturepdf/tmp
EOF

Package

You can also build a Debian (or Debian-like) package (.deb) by issuing the following command :

make deb

Make sure you have the devscripts package installed. The file will be in the newly created target directory.
You can also customize some parameters in the Makefile