#!rsc by RouterOS # RouterOS script: check-certificates # Copyright (c) 2013-2024 Christian Hesse <mail@eworm.de> # https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md # # requires RouterOS, version=7.12 # # check for certificate validity # https://git.eworm.de/cgit/routeros-scripts/about/doc/check-certificates.md :global GlobalFunctionsReady; :while ($GlobalFunctionsReady != true) do={ :delay 500ms; } :local Main do={ :local ScriptName [ :tostr $1 ]; :global CertRenewTime; :global CertRenewUrl; :global CertWarnTime; :global Identity; :global CertificateAvailable :global EscapeForRegEx; :global IfThenElse; :global LogPrintExit2; :global ParseKeyValueStore; :global ScriptLock; :global SendNotification2; :global SymbolForNotification; :global UrlEncode; :global WaitFullyConnected; :local CheckCertificatesDownloadImport do={ :local Name [ :tostr $1 ]; :global CertRenewUrl; :global CertRenewPass; :global CertificateNameByCN; :global EscapeForRegEx; :global FetchUserAgent; :global LogPrintExit2; :global UrlEncode; :global WaitForFile; :local Return false; :foreach Type in={ ".pem"; ".p12" } do={ :local CertFileName ([ $UrlEncode $Name ] . $Type); :do { /tool/fetch check-certificate=yes-without-crl http-header-field=({ $FetchUserAgent }) \ ($CertRenewUrl . $CertFileName) dst-path=$CertFileName as-value; $WaitForFile $CertFileName; :local DecryptionFailed true; :foreach PassPhrase in=$CertRenewPass do={ :local Result [ /certificate/import file-name=$CertFileName passphrase=$PassPhrase as-value ]; :if ($Result->"decryption-failures" = 0) do={ :set DecryptionFailed false; } } /file/remove [ find where name=$CertFileName ]; :if ($DecryptionFailed = true) do={ $LogPrintExit2 warning $0 ("Decryption failed for certificate file '" . $CertFileName . "'.") false; } :foreach CertInChain in=[ /certificate/find where name~("^" . [ $EscapeForRegEx $CertFileName ] . "_[0-9]+\$") \ common-name!=$Name !(subject-alt-name~("(^|\\W)(DNS|IP):" . [ $EscapeForRegEx $Name ] . "(\\W|\$)")) !(common-name=[]) ] do={ $CertificateNameByCN [ /certificate/get $CertInChain common-name ]; } :set Return true; } on-error={ $LogPrintExit2 debug $0 ("Could not download certificate file '" . $CertFileName . "'.") false; } } :return $Return; } :local FormatInfo do={ :local Cert $1; :global FormatLine; :global FormatMultiLines; :global IfThenElse; :local FormatExpire do={ :global CharacterReplace; :return [ $CharacterReplace [ $CharacterReplace [ :tostr $1 ] "w" "w " ] "d" "d " ]; } :local FormatCertChain do={ :local Cert $1; :global EitherOr; :global ParseKeyValueStore; :local CertVal [ /certificate/get $Cert ]; :if ([ :typeof ($CertVal->"issuer") ] = "nothing") do={ :return "self-signed"; } :local Return ""; :for I from=0 to=5 do={ :set Return ($Return . [ $EitherOr ([ $ParseKeyValueStore ($CertVal->"issuer") ]->"CN") \ ([ $ParseKeyValueStore (($CertVal->"issuer")->0) ]->"CN") ]); :set CertVal [ /certificate/get [ find where skid=($CertVal->"akid") ] ]; :if (($CertVal->"akid") = "" || ($CertVal->"akid") = ($CertVal->"skid")) do={ :return $Return; } :set Return ($Return . " -> "); } :return ($Return . "..."); } :local CertVal [ /certificate/get $Cert ]; :return ( \ [ $FormatLine "Name" ($CertVal->"name") ] . "\n" . \ [ $IfThenElse ([ :len ($CertVal->"common-name") ] > 0) ([ $FormatLine "CommonName" ($CertVal->"common-name") ] . "\n") ] . \ [ $IfThenElse ([ :len ($CertVal->"subject-alt-name") ] > 0) ([ $FormatMultiLines "SubjectAltNames" ($CertVal->"subject-alt-name") ] . "\n") ] . \ [ $FormatLine "Private key" [ $IfThenElse (($CertVal->"private-key") = true) "available" "missing" ] ] . "\n" . \ [ $FormatLine "Fingerprint" ($CertVal->"fingerprint") ] . "\n" . \ [ $IfThenElse ([ :len ($CertVal->"ca") ] > 0) [ $FormatLine "Issuer" ($CertVal->"ca") ] [ $FormatLine "Issuer chain" [ $FormatCertChain $Cert ] ] ] . "\n" . \ "Validity:\n" . \ [ $FormatLine " from" ($CertVal->"invalid-before") ] . "\n" . \ [ $FormatLine " to" ($CertVal->"invalid-after") ] . "\n" . \ [ $FormatLine "Expires in" [ $IfThenElse (($CertVal->"expired") = true) "expired" [ $FormatExpire ($CertVal->"expires-after") ] ] ]); } :if ([ $ScriptLock $ScriptName ] = false) do={ :return false; } $WaitFullyConnected; :foreach Cert in=[ /certificate/find where !revoked !ca !scep-url expires-after<$CertRenewTime ] do={ :local CertVal [ /certificate/get $Cert ]; :local CertNew; :local LastName; :do { :if ([ :len $CertRenewUrl ] = 0) do={ $LogPrintExit2 info $ScriptName ("No CertRenewUrl given.") true; } $LogPrintExit2 info $ScriptName ("Attempting to renew certificate '" . ($CertVal->"name") . "'.") false; :local ImportSuccess false; :set LastName ($CertVal->"common-name"); :set ImportSuccess [ $CheckCertificatesDownloadImport $LastName ]; :foreach SAN in=($CertVal->"subject-alt-name") do={ :if ($ImportSuccess = false) do={ :set LastName [ :pick $SAN ([ :find $SAN ":" ] + 1) [ :len $SAN ] ]; :set ImportSuccess [ $CheckCertificatesDownloadImport $LastName ]; } } :if ($ImportSuccess = false) do={ :error false; } :if ([ :len ($CertVal->"fingerprint") ] > 0 && $CertVal->"fingerprint" != [ /certificate/get $Cert fingerprint ]) do={ $LogPrintExit2 debug $ScriptName ("Certificate '" . $CertVal->"name" . "' was updated in place.") false; :set CertVal [ /certificate/get $Cert ]; } else={ $LogPrintExit2 debug $ScriptName ("Certificate '" . $CertVal->"name" . "' was not updated, but replaced.") false; :set CertNew [ /certificate/find where name~("^" . [ $EscapeForRegEx [ $UrlEncode $LastName ] ] . "\\.(p12|pem)_[0-9]+\$") \ (common-name=($CertVal->"common-name") or subject-alt-name~("(^|\\W)(DNS|IP):" . [ $EscapeForRegEx $LastName ] . "(\\W|\$)")) \ fingerprint!=[ :tostr ($CertVal->"fingerprint") ] expires-after>$CertRenewTime ]; :local CertNewVal [ /certificate/get $CertNew ]; :if ([ $CertificateAvailable ([ $ParseKeyValueStore ($CertNewVal->"issuer") ]->"CN") ] = false) do={ $LogPrintExit2 warning $ScriptName ("The certificate chain is not available!") false; } :if (($CertVal->"private-key") = true && ($CertVal->"private-key") != ($CertNewVal->"private-key")) do={ /certificate/remove $CertNew; $LogPrintExit2 warning $ScriptName ("Old certificate '" . ($CertVal->"name") . "' has a private key, new certificate does not. Aborting renew.") true; } /ip/service/set certificate=($CertNewVal->"name") [ find where certificate=($CertVal->"name") ]; /ip/ipsec/identity/set certificate=($CertNewVal->"name") [ find where certificate=($CertVal->"name") ]; /ip/ipsec/identity/set remote-certificate=($CertNewVal->"name") [ find where remote-certificate=($CertVal->"name") ]; /ip/hotspot/profile/set ssl-certificate=($CertNewVal->"name") [ find where ssl-certificate=($CertVal->"name") ]; /certificate/remove $Cert; /certificate/set $CertNew name=($CertVal->"name"); :set CertNewVal; :set CertVal [ /certificate/get $CertNew ]; } $SendNotification2 ({ origin=$ScriptName; silent=true; \ subject=([ $SymbolForNotification "lock-with-ink-pen" ] . "Certificate renewed: " . ($CertVal->"name")); \ message=("A certificate on " . $Identity . " has been renewed.\n\n" . [ $FormatInfo $CertNew ]) }); $LogPrintExit2 info $ScriptName ("The certificate '" . ($CertVal->"name") . "' has been renewed.") false; } on-error={ $LogPrintExit2 debug $ScriptName ("Could not renew certificate '" . ($CertVal->"name") . "'.") false; } } :foreach Cert in=[ /certificate/find where !revoked !scep-url !(expires-after=[]) \ expires-after<$CertWarnTime !(fingerprint=[]) ] do={ :local CertVal [ /certificate/get $Cert ]; :if ([ :len [ /certificate/scep-server/find where ca-cert=($CertVal->"ca") ] ] > 0) do={ $LogPrintExit2 debug $ScriptName ("Certificate '" . ($CertVal->"name") . "' is handled by SCEP, skipping.") false; } else={ :local State [ $IfThenElse (($CertVal->"expired") = true) "expired" "is about to expire" ]; $SendNotification2 ({ origin=$ScriptName; \ subject=([ $SymbolForNotification "warning-sign" ] . "Certificate warning: " . ($CertVal->"name")); \ message=("A certificate on " . $Identity . " " . $State . ".\n\n" . [ $FormatInfo $Cert ]) }); $LogPrintExit2 info $ScriptName ("The certificate '" . ($CertVal->"name") . "' " . $State . \ ", it is invalid after " . ($CertVal->"invalid-after") . ".") false; } } } $Main [ :jobname ];