Third party notification not working (discord)

bikeb · Jan 19th 2025

I've setup mail notification correctly and i receive mails and i've read the documentation about third party notification.

I've used this script that i've put in /usr/share/openmediavault/notification/sink.d/20discord

script:

Bash

#!/bin/bash
#CREATED BY XMON FOR OpenMediaVault
DISCORD_WEBHOOK='PUT YOUR WEBHOOK LINK HERE'

generate_post_data() {
  cat <<EOF
{
  "content": "",
  "embeds": [{
    "title": "${OMV_NOTIFICATION_SUBJECT}",
    "description": "$(cat ${OMV_NOTIFICATION_MESSAGE_FILE})",
    "color": "45973",
    "footer": {
        "text": "${OMV_NOTIFICATION_DATE}",
        "icon_url": ""
    }
  }]
}
EOF
}

curl -H "Content-Type: application/json" -X POST -d "$(generate_post_data)" $DISCORD_WEBHOOK

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When i hit the test button i receive the notification correctly both on discord and on email while the other daily notifications only arrive via email.

Nothing strange in the logs that I attach anyway

I had installed the flashmemory plugin but I uninstalled it

journalctl -u postfix@-.service

Code

-- Boot 07b10ae1a35e412892491ec22a7280ea --
gen 19 07:51:48 openmediavault systemd[1]: Starting postfix@-.service - Postfix Mail Transport Agent (instance -)...
gen 19 07:51:48 openmediavault postfix/postfix-script[1060]: starting the Postfix mail system
gen 19 07:51:48 openmediavault postfix/master[1066]: daemon started -- version 3.7.11, configuration /etc/postfix
gen 19 07:51:48 openmediavault systemd[1]: Started postfix@-.service - Postfix Mail Transport Agent (instance -).
gen 19 07:56:50 openmediavault postfix/pickup[1070]: 3DA742D40A25: uid=0 from=<root>
gen 19 07:56:50 openmediavault postfix/cleanup[6114]: 3DA742D40A25: message-id=<20250119065650.3DA742D40A25@openmediavault.local>
gen 19 07:56:50 openmediavault postfix/qmgr[1071]: 3DA742D40A25: from=<mail@gmail.com>, size=640, nrcpt=2 (queue active)
gen 19 07:56:50 openmediavault postfix/pipe[6116]: 3DA742D40A25: to=<openmediavault-notification@localhost.localdomain>, relay=omvnotificationfilter, delay=0.24, dela>
gen 19 07:56:51 openmediavault postfix/smtp[6117]: 3DA742D40A25: replace: header Subject: Anacron job 'cron.daily' on openmediavault: Subject: [openmediavault.local] >
gen 19 07:56:52 openmediavault postfix/smtp[6117]: 3DA742D40A25: to=<mail@gmail.com>, orig_to=<root>, relay=smtp.gmail.com[64.233.167.109]:587, delay=2.2, del>
gen 19 07:56:52 openmediavault postfix/qmgr[1071]: 3DA742D40A25: removed
gen 19 11:49:00 openmediavault postfix/pickup[39141]: DC97C2D40D9B: uid=0 from=<root>
gen 19 11:49:00 openmediavault postfix/cleanup[46463]: DC97C2D40D9B: message-id=<20250119104900.DC97C2D40D9B@openmediavault.local>
gen 19 11:49:00 openmediavault postfix/qmgr[1071]: DC97C2D40D9B: from=<mail@gmail.com>, size=436, nrcpt=2 (queue active)
gen 19 11:49:01 openmediavault postfix/pipe[46465]: DC97C2D40D9B: to=<openmediavault-notification@localhost.localdomain>, relay=omvnotificationfilter, delay=0.45, del>
gen 19 11:49:01 openmediavault postfix/smtp[46466]: DC97C2D40D9B: replace: header Subject: Test message from openmediavault: Subject: [openmediavault.local] Test mess>
gen 19 11:49:02 openmediavault postfix/smtp[46466]: DC97C2D40D9B: to=<mail@gmail.com>, relay=smtp.gmail.com[66.102.1.108]:587, delay=1.4, delays=0.01/0.03/0.5>
gen 19 11:49:02 openmediavault postfix/qmgr[1071]: DC97C2D40D9B: removed

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omv-salt deploy run postfix

Code

debian:
----------
          ID: configure_postfix_main
    Function: file.managed
        Name: /etc/postfix/main.cf
      Result: True
     Comment: File /etc/postfix/main.cf is in the correct state
     Started: 11:53:47.512854
    Duration: 81.319 ms
     Changes:   
----------
          ID: configure_postfix_master
    Function: file.managed
        Name: /etc/postfix/master.cf
      Result: True
     Comment: File /etc/postfix/master.cf is in the correct state
     Started: 11:53:47.594255
    Duration: 68.759 ms
     Changes:   
----------
          ID: configure_postfix_recipient_bcc
    Function: file.managed
        Name: /etc/postfix/recipient_bcc
      Result: True
     Comment: File /etc/postfix/recipient_bcc is in the correct state
     Started: 11:53:47.663095
    Duration: 68.368 ms
     Changes:   
----------
          ID: run_postmap_recipient_bcc
    Function: cmd.run
        Name: postmap /etc/postfix/recipient_bcc
      Result: True
     Comment: State was not run because none of the onchanges reqs changed
     Started: 11:53:47.732020
    Duration: 0.002 ms
     Changes:   
----------
          ID: configure_postfix_recipient_canonical
    Function: file.managed
        Name: /etc/postfix/recipient_canonical
      Result: True
     Comment: File /etc/postfix/recipient_canonical is in the correct state
     Started: 11:53:47.732077
    Duration: 73.609 ms
     Changes:   
----------
          ID: run_postmap_recipient_canonical
    Function: cmd.run
        Name: postmap /etc/postfix/recipient_canonical
      Result: True
     Comment: State was not run because none of the onchanges reqs changed
     Started: 11:53:47.805902
    Duration: 0.003 ms
     Changes:   
----------
          ID: configure_postfix_sasl_passwd
    Function: file.managed
        Name: /etc/postfix/sasl_passwd
      Result: True
     Comment: File /etc/postfix/sasl_passwd is in the correct state
     Started: 11:53:47.805947
    Duration: 69.156 ms
     Changes:   
----------
          ID: run_postmap_sasl_passwd
    Function: cmd.run
        Name: postmap /etc/postfix/sasl_passwd
      Result: True
     Comment: State was not run because none of the onchanges reqs changed
     Started: 11:53:47.875314
    Duration: 0.002 ms
     Changes:   
----------
          ID: configure_postfix_sender_bcc
    Function: file.managed
        Name: /etc/postfix/sender_bcc
      Result: True
     Comment: File /etc/postfix/sender_bcc is in the correct state
     Started: 11:53:47.875357
    Duration: 71.656 ms
     Changes:   
----------
          ID: run_postmap_sender_bcc
    Function: cmd.run
        Name: postmap /etc/postfix/sender_bcc
      Result: True
     Comment: State was not run because none of the onchanges reqs changed
     Started: 11:53:47.947220
    Duration: 0.003 ms
     Changes:   
----------
          ID: configure_postfix_sender_canonical
    Function: file.managed
        Name: /etc/postfix/sender_canonical
      Result: True
     Comment: File /etc/postfix/sender_canonical is in the correct state
     Started: 11:53:47.947262
    Duration: 68.793 ms
     Changes:   
----------
          ID: run_postmap_sender_canonical
    Function: cmd.run
        Name: postmap /etc/postfix/sender_canonical
      Result: True
     Comment: State was not run because none of the onchanges reqs changed
     Started: 11:53:48.016264
    Duration: 0.002 ms
     Changes:   
----------
          ID: configure_postfix_smtp_header_checks
    Function: file.managed
        Name: /etc/postfix/smtp_header_checks
      Result: True
     Comment: File /etc/postfix/smtp_header_checks is in the correct state
     Started: 11:53:48.016315
    Duration: 26.997 ms
     Changes:   
----------
          ID: configure_postfix_transport
    Function: file.managed
        Name: /etc/postfix/transport
      Result: True
     Comment: File /etc/postfix/transport is in the correct state
     Started: 11:53:48.043382
    Duration: 26.738 ms
     Changes:   
----------
          ID: run_postmap_transport
    Function: cmd.run
        Name: postmap /etc/postfix/transport
      Result: True
     Comment: State was not run because none of the onchanges reqs changed
     Started: 11:53:48.070313
    Duration: 0.002 ms
     Changes:   
----------
          ID: remove_postfix_cron
    Function: file.absent
        Name: /etc/cron.hourly/openmediavault-flushmailq
      Result: True
     Comment: File /etc/cron.hourly/openmediavault-flushmailq is not present
     Started: 11:53:48.070353
    Duration: 0.435 ms
     Changes:   
----------
          ID: postfix_set_permissions
    Function: cmd.run
        Name: postfix set-permissions
      Result: True
     Comment: Command "postfix set-permissions" run
     Started: 11:53:48.070849
    Duration: 270.002 ms
     Changes:   
              ----------
              pid:
                  47733
              retcode:
                  0
              stderr:
              stdout:
----------
          ID: start_postfix_service
    Function: service.running
        Name: postfix
      Result: True
     Comment: The service postfix is already running
     Started: 11:53:48.934228
    Duration: 18.218 ms
     Changes:   

Summary for debian
-------------
Succeeded: 18 (changed=1)
Failed:     0
-------------
Total states run:     18
Total run time:  844.064 ms

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bikeb · Jan 25th 2025

If i remove this line everything works but in this way i don't have the details of the notification.

Someone have some advice?

"description": "$(cat ${OMV_NOTIFICATION_MESSAGE_FILE})",

bikeb · Jan 26th 2025

Solved.

If you want to show the output of a file or stdin in bash, and your file includes special characters such as backticks (`) and ", then you can't simply cat filename. You will need to properly escape special characters.

One of the easiest methods to output properly escaped text from a file is to use jq, cut, and rev

Prerequisites

jq - Character escaping
cut - Cut characters from string (part of coreutils, included by default on most systems)
rev - Reversing of characters (part of util-linux, included by default on most systems)

Usage (contents of file)

Simply pass filename to the following command to escape the file contents to stdout:

Code

jq -Rs . <filename | cut -c 2- | rev | cut -c 2- | rev

So the working bash script to put in /usr/share/openmediavault/notification/sink.d/20discord is here:

Bash

#!/bin/bash
DISCORD_WEBHOOK='PUT YOUR WEBHOOK LINK HERE'

generate_post_data() {
  cat <<EOF
{
  "content": "",
  "embeds": [{
    "title": "${OMV_NOTIFICATION_SUBJECT}",
    "description": "$(jq -Rs . <${OMV_NOTIFICATION_MESSAGE_FILE} | cut -c 2- | rev | cut -c 2- | rev)",
    "color": "45973",
    "footer": {
        "text": "${OMV_NOTIFICATION_DATE}",
        "icon_url": ""
    }
  }]
}
EOF
}

curl -H "Content-Type: application/json" -X POST -d "$(generate_post_data)" $DISCORD_WEBHOOK

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Third party notification not working (discord)

macom Jan 19th 2025

bikeb Jan 26th 2025

bikeb Jan 26th 2025

Prerequisites

Usage (contents of file)

bikeb Jan 26th 2025

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