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authorGravatar Christian Hesse <mail@eworm.de>2024-03-04 13:48:01 +0100
committerGravatar Christian Hesse <mail@eworm.de>2024-03-04 21:40:34 +0100
commit458fd1fdcd6b354d0addfd814f4e10c0443d5d53 (patch)
tree29d7015a5d55e368470e70b1a17b9b02a38ba333 /netwatch-dns.rsc
parent400516295ed5187278b0e6791fc4dc98914cf840 (diff)
netwatch-dns: move code into function
Diffstat (limited to 'netwatch-dns.rsc')
-rw-r--r--netwatch-dns.rsc175
1 files changed, 90 insertions, 85 deletions
diff --git a/netwatch-dns.rsc b/netwatch-dns.rsc
index 3b98a32..45c12d4 100644
--- a/netwatch-dns.rsc
+++ b/netwatch-dns.rsc
@@ -8,116 +8,121 @@
# monitor and manage dns/doh with netwatch
# https://git.eworm.de/cgit/routeros-scripts/about/doc/netwatch-dns.md
-:local 0 [ :jobname ];
:global GlobalFunctionsReady;
:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
-:global CertificateAvailable;
-:global EitherOr;
-:global LogPrintExit2;
-:global ParseKeyValueStore;
-:global ScriptLock;
+:local Main do={
+ :local ScriptName [ :tostr $1 ];
-$ScriptLock $0;
+ :global CertificateAvailable;
+ :global EitherOr;
+ :global LogPrintExit2;
+ :global ParseKeyValueStore;
+ :global ScriptLock;
-:local SettleTime (5m30s - [ /system/resource/get uptime ]);
-:if ($SettleTime > 0s) do={
- $LogPrintExit2 info $0 ("System just booted, giving netwatch " . $SettleTime . " to settle.") true;
-}
-
-:local DnsServers ({});
-:local DnsFallback ({});
-:local DnsCurrent [ /ip/dns/get servers ];
+ $ScriptLock $ScriptName;
-:foreach Host in=[ /tool/netwatch/find where comment~"\\bdns\\b" status="up" ] do={
- :local HostVal [ /tool/netwatch/get $Host ];
- :local HostInfo [ $ParseKeyValueStore ($HostVal->"comment") ];
+ :local SettleTime (5m30s - [ /system/resource/get uptime ]);
+ :if ($SettleTime > 0s) do={
+ $LogPrintExit2 info $ScriptName ("System just booted, giving netwatch " . $SettleTime . " to settle.") true;
+ }
- :if ($HostInfo->"disabled" != true) do={
- :if ($HostInfo->"dns" = true) do={
- :set DnsServers ($DnsServers, $HostVal->"host");
- }
- :if ($HostInfo->"dns-fallback" = true) do={
- :set DnsFallback ($DnsFallback, $HostVal->"host");
+ :local DnsServers ({});
+ :local DnsFallback ({});
+ :local DnsCurrent [ /ip/dns/get servers ];
+
+ :foreach Host in=[ /tool/netwatch/find where comment~"\\bdns\\b" status="up" ] do={
+ :local HostVal [ /tool/netwatch/get $Host ];
+ :local HostInfo [ $ParseKeyValueStore ($HostVal->"comment") ];
+
+ :if ($HostInfo->"disabled" != true) do={
+ :if ($HostInfo->"dns" = true) do={
+ :set DnsServers ($DnsServers, $HostVal->"host");
+ }
+ :if ($HostInfo->"dns-fallback" = true) do={
+ :set DnsFallback ($DnsFallback, $HostVal->"host");
+ }
}
}
-}
-:if ([ :len $DnsServers ] > 0) do={
- :if ($DnsServers != $DnsCurrent) do={
- $LogPrintExit2 info $0 ("Updating DNS servers: " . [ :tostr $DnsServers ]) false;
- /ip/dns/set servers=$DnsServers;
- /ip/dns/cache/flush;
- }
-} else={
- :if ([ :len $DnsFallback ] > 0) do={
- :if ($DnsFallback != $DnsCurrent) do={
- $LogPrintExit2 info $0 ("Updating DNS servers to fallback: " . \
- [ :tostr $DnsFallback ]) false;
- /ip/dns/set servers=$DnsFallback;
+ :if ([ :len $DnsServers ] > 0) do={
+ :if ($DnsServers != $DnsCurrent) do={
+ $LogPrintExit2 info $ScriptName ("Updating DNS servers: " . [ :tostr $DnsServers ]) false;
+ /ip/dns/set servers=$DnsServers;
/ip/dns/cache/flush;
}
+ } else={
+ :if ([ :len $DnsFallback ] > 0) do={
+ :if ($DnsFallback != $DnsCurrent) do={
+ $LogPrintExit2 info $ScriptName ("Updating DNS servers to fallback: " . \
+ [ :tostr $DnsFallback ]) false;
+ /ip/dns/set servers=$DnsFallback;
+ /ip/dns/cache/flush;
+ }
+ }
}
-}
-:local DohCurrent [ /ip/dns/get use-doh-server ];
-:local DohServers ({});
+ :local DohCurrent [ /ip/dns/get use-doh-server ];
+ :local DohServers ({});
-:foreach Host in=[ /tool/netwatch/find where comment~"\\bdoh\\b" status="up" ] do={
- :local HostVal [ /tool/netwatch/get $Host ];
- :local HostInfo [ $ParseKeyValueStore ($HostVal->"comment") ];
- :local HostName [ /ip/dns/static/find where name address=($HostVal->"host") \
- (!type or type="A" or type="AAAA") !disabled !dynamic ];
- :if ([ :len $HostName ] > 0) do={
- :set HostName [ /ip/dns/static/get ($HostName->0) name ];
- }
-
- :if ($HostInfo->"doh" = true && $HostInfo->"disabled" != true) do={
- :if ([ :len ($HostInfo->"doh-url") ] = 0) do={
- :set ($HostInfo->"doh-url") ("https://" . [ $EitherOr $HostName ($HostVal->"host") ] . "/dns-query");
+ :foreach Host in=[ /tool/netwatch/find where comment~"\\bdoh\\b" status="up" ] do={
+ :local HostVal [ /tool/netwatch/get $Host ];
+ :local HostInfo [ $ParseKeyValueStore ($HostVal->"comment") ];
+ :local HostName [ /ip/dns/static/find where name address=($HostVal->"host") \
+ (!type or type="A" or type="AAAA") !disabled !dynamic ];
+ :if ([ :len $HostName ] > 0) do={
+ :set HostName [ /ip/dns/static/get ($HostName->0) name ];
}
- :if ($DohCurrent = $HostInfo->"doh-url") do={
- $LogPrintExit2 debug $0 ("Current DoH server is still up: " . $DohCurrent) true;
- }
+ :if ($HostInfo->"doh" = true && $HostInfo->"disabled" != true) do={
+ :if ([ :len ($HostInfo->"doh-url") ] = 0) do={
+ :set ($HostInfo->"doh-url") ("https://" . [ $EitherOr $HostName ($HostVal->"host") ] . "/dns-query");
+ }
- :set ($DohServers->[ :len $DohServers ]) $HostInfo;
- }
-}
-
-:if ([ :len $DohCurrent ] > 0) do={
- $LogPrintExit2 info $0 ("Current DoH server is down, disabling: " . $DohCurrent) false;
- /ip/dns/set use-doh-server="";
- /ip/dns/cache/flush;
-}
+ :if ($DohCurrent = $HostInfo->"doh-url") do={
+ $LogPrintExit2 debug $ScriptName ("Current DoH server is still up: " . $DohCurrent) true;
+ }
-:foreach DohServer in=$DohServers do={
- :if ([ :len ($DohServer->"doh-cert") ] > 0) do={
- :if ([ $CertificateAvailable ($DohServer->"doh-cert") ] = false) do={
- $LogPrintExit2 warning $0 ("Downloading certificate failed, trying without.") false;
+ :set ($DohServers->[ :len $DohServers ]) $HostInfo;
}
}
- :local Data false;
- :do {
- :set Data ([ /tool/fetch check-certificate=yes-without-crl output=user \
- http-header-field=({ "accept: application/dns-message" }) \
- url=(($DohServer->"doh-url") . "?dns=" . [ :convert to=base64 ([ :rndstr length=2 ] . \
- "\01\00" . "\00\01" . "\00\00" . "\00\00" . "\00\00" . "\09doh-check\05eworm\02de\00" . \
- "\00\10" . "\00\01") ]) as-value ]->"data");
- } on-error={
- $LogPrintExit2 warning $0 ("Request to DoH server failed (network or certificate issue): " . \
- ($DohServer->"doh-url")) false;
+ :if ([ :len $DohCurrent ] > 0) do={
+ $LogPrintExit2 info $ScriptName ("Current DoH server is down, disabling: " . $DohCurrent) false;
+ /ip/dns/set use-doh-server="";
+ /ip/dns/cache/flush;
}
- :if ($Data != false) do={
- :if ([ :typeof [ :find $Data "doh-check-OK" ] ] = "num") do={
- /ip/dns/set use-doh-server=($DohServer->"doh-url") verify-doh-cert=yes;
- /ip/dns/cache/flush;
- $LogPrintExit2 info $0 ("Setting DoH server: " . ($DohServer->"doh-url")) true;
- } else={
- $LogPrintExit2 warning $0 ("Received unexpected response from DoH server: " . \
+ :foreach DohServer in=$DohServers do={
+ :if ([ :len ($DohServer->"doh-cert") ] > 0) do={
+ :if ([ $CertificateAvailable ($DohServer->"doh-cert") ] = false) do={
+ $LogPrintExit2 warning $ScriptName ("Downloading certificate failed, trying without.") false;
+ }
+ }
+
+ :local Data false;
+ :do {
+ :set Data ([ /tool/fetch check-certificate=yes-without-crl output=user \
+ http-header-field=({ "accept: application/dns-message" }) \
+ url=(($DohServer->"doh-url") . "?dns=" . [ :convert to=base64 ([ :rndstr length=2 ] . \
+ "\01\00" . "\00\01" . "\00\00" . "\00\00" . "\00\00" . "\09doh-check\05eworm\02de\00" . \
+ "\00\10" . "\00\01") ]) as-value ]->"data");
+ } on-error={
+ $LogPrintExit2 warning $ScriptName ("Request to DoH server failed (network or certificate issue): " . \
($DohServer->"doh-url")) false;
}
+
+ :if ($Data != false) do={
+ :if ([ :typeof [ :find $Data "doh-check-OK" ] ] = "num") do={
+ /ip/dns/set use-doh-server=($DohServer->"doh-url") verify-doh-cert=yes;
+ /ip/dns/cache/flush;
+ $LogPrintExit2 info $ScriptName ("Setting DoH server: " . ($DohServer->"doh-url")) true;
+ } else={
+ $LogPrintExit2 warning $ScriptName ("Received unexpected response from DoH server: " . \
+ ($DohServer->"doh-url")) false;
+ }
+ }
}
}
+
+$Main [ :jobname ];