mirror of https://github.com/aredn/aredn.git
115 lines
3.6 KiB
Bash
Executable File
115 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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true <<'LICENSE'
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Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
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Copyright (C) 2020 Darryl Quinn K5DLQ
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See Contributors file for additional contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation version 3 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional Terms:
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Additional use restrictions exist on the AREDN(TM) trademark and logo.
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See AREDNLicense.txt for more info.
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Attributions to the AREDN Project must be retained in the source code.
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If importing this code into a new or existing project attribution
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to the AREDN project must be added to the source code.
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You must not misrepresent the origin of the material contained within.
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Modified versions must be modified to attribute to the original source
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and be marked in reasonable ways as differentiate it from the original
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version.
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LICENSE
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function retrieve_alert() {
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url=$1
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file=$2
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label=$3
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# label is an optional argument
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[ -z "$label" ] && label=$file
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wget -q -O "${file}" -P /tmp "${url}"
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if [ -s "/tmp/${file}" ]; then
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echo "<strong>↣ ${label}:</strong>"|cat - "/tmp/${file}" > /tmp/out &&
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echo "<p>" >> /tmp/out &&
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mv /tmp/out "/tmp/${file}"
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# return success
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return 0
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else
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return 1
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fi
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}
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# does the node have access to downloads.arednmesh.org
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ping -q -W10 -c1 downloads.arednmesh.org > /dev/null &&
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online=true;
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[ -f /tmp/aredn_message ] &&
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rm /tmp/aredn_message
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nodename=$(echo "$HOSTNAME" | tr 'A-Z' 'a-z')
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if [ "$online" = "true" ]
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then
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# fetch node specific message file
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retrieve_alert http://downloads.arednmesh.org/messages/${nodename}.txt aredn_message ${nodename}
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if [ $? -ne 0 ] # no node specific file
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then
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# fetch broadcast message file
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retrieve_alert http://downloads.arednmesh.org/messages/all.txt aredn_message "all nodes"}
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else
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# need to append to node file
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retrieve_alert http://downloads.arednmesh.org/messages/all.txt aredn_message_all "all nodes"
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echo "<br />" >> /tmp/aredn_message
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cat /tmp/aredn_message_all >> /tmp/aredn_message
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rm /tmp/aredn_message_all
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fi
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fi
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# are local alerts enabled? uci: aredn.alerts.localpath != NULL
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alertslocalpath=$(uci -q get aredn.@alerts[0].localpath)
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if [ -n "$alertslocalpath" ]; then
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# try node specific message file
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retrieve_alert "${alertslocalpath}/${nodename}.txt" "${nodename}-alert" "${nodename}" &&
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FILES="${nodename}"
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# try group messages uci: aredn.alerts.groups != NULL
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alertgroups=$(uci -q get aredn.@alerts[0].groups)
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if [ -n "$alertgroups" ]; then
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IFS=',' # split multiple groups on comma
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for group in $alertgroups; do
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groupname=$(echo $group | xargs | tr 'A-Z' 'a-z')
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retrieve_alert "${alertslocalpath}/${groupname}.txt" "${groupname}-alert" "${groupname}" &&
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FILES="${FILES} ${groupname}"
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done
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IFS=' ' # reset IFS
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fi
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# try broadcast message file
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retrieve_alert "${alertslocalpath}/all.txt" "all-alert" "all nodes" &&
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FILES="${FILES} all"
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# combine all files
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if [ -n "$FILES" ];then
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cat /dev/null > /tmp/local_message
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for FILE in $FILES; do
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cat /tmp/${FILE}-alert >> /tmp/local_message
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rm /tmp/${FILE}-alert
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done
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fi
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fi
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