From c8500dddd01ef10128eca0e4176050ef087a3918 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Tue, 4 Apr 2023 16:27:23 +0200
Subject: mod/ssh-keys-import: make ssh-keys-import a module

---
 mod/ssh-keys-import.rsc | 84 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 mod/ssh-keys-import.rsc

(limited to 'mod')

diff --git a/mod/ssh-keys-import.rsc b/mod/ssh-keys-import.rsc
new file mode 100644
index 0000000..6f47314
--- /dev/null
+++ b/mod/ssh-keys-import.rsc
@@ -0,0 +1,84 @@
+#!rsc by RouterOS
+# RouterOS script: mod/ssh-keys-import
+# Copyright (c) 2020-2023 Christian Hesse <mail@eworm.de>
+# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
+#
+# requires RouterOS, version=7.9beta4
+#
+# import ssh keys for public key authentication
+# https://git.eworm.de/cgit/routeros-scripts/about/doc/mod/ssh-keys-import.md
+
+:global SSHKeysImport;
+:global SSHKeysImportFile;
+
+# import single key passed as string
+:set SSHKeysImport do={
+  :local Key  [ :tostr $1 ];
+  :local User [ :tostr $2 ];
+
+  :global GetRandom20CharAlNum;
+  :global LogPrintExit2;
+  :global MkDir;
+  :global WaitForFile;
+
+  :if ([ :len $Key ] = 0 || [ :len $User ] = 0) do={
+    $LogPrintExit2 warning $0 ("Missing argument(s), please pass key and user!") true;
+  }
+
+  :if ([ :len [ /user/find where name=$User ] ] = 0) do={
+    $LogPrintExit2 warning $0 ("User '" . $User . "' does not exist.") true;
+  }
+
+  :if ([ $MkDir "tmpfs/ssh-keys-import" ] = false) do={
+    $LogPrintExit2 warning $0 ("Creating directory 'tmpfs/ssh-keys-import' failed!") true;
+  }
+
+  :local FileName ("tmpfs/ssh-keys-import/key-" . [ $GetRandom20CharAlNum 6 ] . ".pub");
+  /file/add name=$FileName contents=$Key;
+  $WaitForFile $FileName;
+
+  :do {
+    /user/ssh-keys/import public-key-file=$FileName user=$User;
+  } on-error={
+    $LogPrintExit2 warning $0 ("Failed importing key.") true;
+  }
+}
+
+# import keys from a file
+:set SSHKeysImportFile do={
+  :local FileName [ :tostr $1 ];
+  :local User     [ :tostr $2 ];
+
+  :global EitherOr;
+  :global LogPrintExit2;
+  :global ParseKeyValueStore;
+  :global SSHKeysImport;
+
+  :if ([ :len $FileName ] = 0 || [ :len $User ] = 0) do={
+    $LogPrintExit2 warning $0 ("Missing argument(s), please pass file name and user!") true;
+  }
+
+  :local File [ /file/find where name=$FileName ];
+  :if ([ :len $File ] = 0) do={
+    $LogPrintExit2 warning $0 ("File '" . $FileName . "' does not exist.") true;
+  }
+  :local Keys ([ /file/get $FileName contents ] . "\n");
+
+  :do {
+    :local Continue false;
+    :local Line [ :pick $Keys 0 [ :find $Keys "\n" ] ];
+    :set Keys [ :pick $Keys ([ :find $Keys "\n" ] + 1) [ :len $Keys ] ];
+    :local Type [ :pick $Line 0 [ :find $Line " " ] ];
+    :if ($Type = "ssh-rsa") do={
+      $SSHKeysImport $Line $User;
+      :set Continue true;
+    }
+    :if ($Continue = false && $Type = "#") do={
+      :set User [ $EitherOr ([ $ParseKeyValueStore [ :pick $Line 2 [ :len $Line ] ] ]->"user") $User ];
+      :set Continue true;
+    }
+    :if ($Continue = false && [ :len $Type ] > 0) do={
+      $LogPrintExit2 warning $0 ("SSH key of type '" . $Type . "' is not supported.") false;
+    }
+  } while=([ :len $Keys ] > 0);
+}
-- 
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