URI: 

       Title: Send XMPP messages from the command line
       Author: Solène
       Date: 25 May 2023
       Tags: xmpp monitoring selfhosting reed-alert
       Description: In this blog post, you will learn how to use the program
       go-sendxmpp to programmatically send XMPP messages from a script
       
       # Introduction
       
       As a reed-alert user for monitoring my servers, while using emails
       works efficiently, I wanted to have more instant notifications for
       critical issues.  I'm also an happy XMPP user, so I looked for a
       solution to send XMPP messages from a command line.
       
  HTML More about reed-alert on the blog
  HTML Reed-alert project git repository
       
       I will explain how to use the program go-sendxmpp to send messages from
       a command line, this is a newer drop-in replacement for the old perl
       sendxmpp that doesn't seem to work anymore.
       
  HTML go-sendxmpp project git repository
       
       # Installation
       
       Following go-sendxmpp documentation, you need go to be installed, and
       then run `go install salsa.debian.org/mdosch/go-sendxmpp@latest` to
       compile the binary in `~/go/bin/go-sendxmpp`.  Because it's a static
       binary, you can move it to a directory in `$PATH`.
       
       If I'm satisfied of it, I'll import go-sendxmpp into the OpenBSD ports
       tree to make it available as a package for everyone.
       
       # Configuration
       
       Open a shell with the user that is going to run go-sendxmpp, prepare
       the configuration file in its default location:
       
       ```shell
       mkdir -p ~/.config/go-sendxmpp
       touch ~/.config/go-sendxmpp/config
       chmod 400 ~/.config/go-sendxmpp/config
       ```
       
       Edit the file `~/.config/go-sendxmpp/config` to add the two lines:
       
       ```
       username: myuser@myserver
       password: hunter2_oryourpassword
       ```
       
       Now, your user should be ready to use `go-sendxmpp`, I recommend always
       enabling the flag `-t` to use TLS to connect to the server, but you
       should really choose an XMPP server providing TLS-only.
       
       The program usage is simple: `echo "this is a message for you" |
       go-sendxmpp dest@remote`, and you are done.  It's easy to integrate it
       in shell tasks.
       
       Note that go-sendxmpp allows you to get the password for a command
       instead of storing it in plain text, this may be more convenient and
       secure in some scenarios.
       
       # Reed-alert configuration
       
       Back to reed-alert, using go-sendxmpp is as easy as declaring a new
       alert type, especially using the email template:
       
       ```common-lisp
       (alert xmpp "echo -n '[%state%] Problem with %function% %date% %params%' | go-sendxmpp user@remote")
       
       ;; example of use
       (=> xmpp ping :host "dataswamp.org" :desc "Ping to dataswamp.org")
       ```
       
       # Conclusion
       
       XMPP is a very reliable communication protocol, I'm happy that I found
       go-sendxmpp, a modern, working and simple way to programmatically send
       me alerts using XMPP.