47 lines
2.0 KiB
Markdown
47 lines
2.0 KiB
Markdown
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# Dynamic Status
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These scripts control and monitor several functions of my computer. Most importantly it is possible to switch to a "offline status" which disables several internet-using monitoring functions.
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status-ip.sh and status-misc.sh rely on `xfce-genmon-plugin` to show some status messages on the XFCE task bars.
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status-interaction.sh enables users to actively change some values, e.g. the on-/offline status, the used DNS nameserver, and to trigger some actions, e.g. to send mails in an `msmtp` queue.
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I tried to make it as compatible to as many systems as possible but some values are still hard-coded.
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## DNS nameserver switch
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This feature heavily depends on network-manager and it's dispatcher feature. In order to use it, put a file in `/etc/NetworkManager/dispatcher.d/` and name it `90-custom-resolv.conf` for example. Fill it:
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```
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#!/bin/bash
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#
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# Depending on dynamic status, override /etc/resolv.conf
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CUSTOM=/tmp/resolv_custom.conf
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DEFAULT=/home/user/bin/default-nameserver.sh
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if [ ! -e $CUSTOM ]; then # if file does not exists, use default nameserver script
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bash $DEFAULT
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echo "# 90-custom-resolvconf executed default-nameserver.sh" >> /etc/resolv.conf
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exit 0
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fi
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SET=$(cat $CUSTOM | head -n1 | awk '{print $NF}') # first line, last word
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if [ "$SET" != "auto" ]; then
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cp -f /etc/resolv.conf /etc/resolv.conf.bak # backup original resolv config file
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cat $CUSTOM > /etc/resolv.conf # use custom file, update original one
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else
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echo "# 90-custom-resolvconf didn't change any substantial values here, just added this line." >> /etc/resolv.conf
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fi
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```
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The file has to be owned by root and be executable in order to function. It will either execute a script that sets default nameserver settings (in my case, it's localhost since I use a local dnsmasq), or take the values from another file which is created by switching the nameservers with status-interaction.sh.
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Nameservers can be configured in `config.cfg` as value of `NS=`. It holds following pattern:
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`set1(ip1,ip2,ip3)|set2(ip4,ip5)`
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Please remember to put it between quotes.
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