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Ghostscript integration in Enterprise Server 9

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Integrating Ghostscript in Enterprise Server 9 is a 2-step process:

Step 1. Installing Ghostscript

Step 2. Configuring Enterprise Server

1. Ghostscript installation

On Mac OS

Step 1. Download the installer from http://sourceforge.net/projects/ghostscript/files/.

Step 2. Install Ghostscript in the following location:

/usr/local

Note: The binaries are installed in /usr/local/bin.

On Windows

Step 1. Download a version under the GPL license from http://prdownloads.sourceforge.net/ghostscript.

Tip: The same link can also be used for downloading other versions (under another license).

Note: Open a subdirectory and locate a file named "gs###w32.exe" (where ### is the version number, for instance gs907w32.exe).

Step 2. Run the installer and follow the instructions.

Step 3. Allow a PHP page to start a command shell.

IMPORTANT: Allowing PHP pages to execute a command shell can cause a security risk for your Web server because any PHP page can now execute any DOS command. Therefore, be sure that:

  • No malicious script pages (such as PHP, ASP, cgi, etc.) can be installed on the Web server.
  • The user IUSR_<machinename> does not have access to files that may not be accessed by a Web user (through a malicious script page).

This can be established in two ways:

  1. Copy the executable cmd.exe from the <windows>\system32 directory to the PHP directory (the directory where php.exe resides, e.g. c:\php).
  2. Assign “read and execute” access rights for the Web server user IUSR_<machinename> to the file cmd.exe in the <windows>\system32 directory.

Notes:

  • The PATH setting of the command shell should include the path to ImageMagick and Ghostscript.
  • If a PHP page cannot start a command shell, you will see the following error message:

"Unable to Fork"
On Linux

Use one of the following methods:

Tip: The same link can also be used for downloading other versions (under another license).

  • Download the .tar.gz archives, and compile and install the source code. Follow the instructions in the “How to install Ghostscript” document (doc/install.htm).

2. Enterprise Server configuration

Define the path where Ghostscript is installed:

  • File: configserver.php
  • Name of option: GHOST_SCRIPT_APP_PATH
  • Values: The full path to the folder of the Ghostscript application or (optionally on Windows) to the executable.

Note: Use forward slashes and do NOT end with a slash.

On Windows 64-bit platforms, Ghostscript can be run as either a 32-bit application or a 64-bit application. Enter one of the following values (requires Enterprise Server 9.3 or higher):

  • To point to the 32-bit version, point to the directory or to the executable
  • To point to the 64-bit version, point to the executable
  • Example:
  • For Linux/Mac:

define( 'GHOST_SCRIPT_APP_PATH', '/usr/local/bin' );

  • For Windows:

define( 'GHOST_SCRIPT_APP_PATH', 'C:/Program Files/gs/gs8.71/bin/gswin64c.exe' );

Reference Materials

Image preview generation in Enterprise Server 9

Enterprise Server 9 configuration

Enterprise Server 9 documentation

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