check_ssl_check

Requirements

bc
curl
date
file
host
nmap
OpenSSL

Optional dependencies

check_ssl_cert requires expect or timeout to enable timeouts. If expect or timeout are not present on your system timeouts will be disabled.
dig for
- DANE checks
- DNSSEC checks
gmake on FreeBSD
expand for --info
tar and bzip2 to build release packages
ip or ifconfig to be able to use the -4 and -6 options
nectcat for --ignore-connection-state
Python 3.0 for the TDS (Tabular Data Stream) protocol check
Java for KeyStore checks

Development

Following tools are required for development:

shUnit2 for the tests
shfmt to format the source files
ShellCheck for the code quality checks
codespell for the spelling checks
dig for IPv6 tests

Installation

You can run the plugin from the shell.
If you want to install it systemwide, copy the plugin to a directory in the path, and check_ssl_cert.1 in an appropriate directory in the $MANPATH
Simply copy the plugin to your Nagios/Icinga plugin directory (e.g., /usr/lib64/nagios/plugins/)
Use make install by defining the DESTDIR and MANDIR variables with the installation targets. E.g, make DESTDIR=/nagios/plugins/dir MANDIR=/nagios/plugins/man/dir install
To install the bash completion script run sudo make install_bash_completion (it will install the completion script in the directory defined by pkg-config --variable=completionsdir bash-completion)