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-rw-r--r--op-mode-definitions/show-ssh.xml.in28
-rw-r--r--src/op_mode/show-ssh-fingerprints.py49
2 files changed, 77 insertions, 0 deletions
diff --git a/op-mode-definitions/show-ssh.xml.in b/op-mode-definitions/show-ssh.xml.in
new file mode 100644
index 000000000..dc6e0d02e
--- /dev/null
+++ b/op-mode-definitions/show-ssh.xml.in
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+<interfaceDefinition>
+ <node name="show">
+ <children>
+ <node name="ssh">
+ <properties>
+ <help>Show SSH server information</help>
+ </properties>
+ <children>
+ <node name="fingerprints">
+ <properties>
+ <help>Show SSH server public key fingerprints</help>
+ </properties>
+ <command>${vyos_op_scripts_dir}/show-ssh-fingerprints.py</command>
+ <children>
+ <node name="ascii">
+ <properties>
+ <help>Show visual ASCII art representation of the public key</help>
+ </properties>
+ <command>${vyos_op_scripts_dir}/show-ssh-fingerprints.py --ascii</command>
+ </node>
+ </children>
+ </node>
+ </children>
+ </node>
+ </children>
+ </node>
+</interfaceDefinition>
diff --git a/src/op_mode/show-ssh-fingerprints.py b/src/op_mode/show-ssh-fingerprints.py
new file mode 100644
index 000000000..913baae46
--- /dev/null
+++ b/src/op_mode/show-ssh-fingerprints.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+#
+# Copyright 2017-2023 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library. If not, see <http://www.gnu.org/licenses/>.
+
+import sys
+import glob
+import argparse
+from vyos.utils.process import cmd
+
+# Parse command line
+parser = argparse.ArgumentParser()
+parser.add_argument("--ascii", help="Show visual ASCII art representation of the public key", action="store_true")
+args = parser.parse_args()
+
+# Get list of server public keys
+publickeys = glob.glob("/etc/ssh/*.pub")
+
+if publickeys:
+ print("SSH server public key fingerprints:\n", flush=True)
+ for keyfile in publickeys:
+ if args.ascii:
+ try:
+ print(cmd("ssh-keygen -l -v -E sha256 -f " + keyfile) + "\n", flush=True)
+ # Ignore invalid public keys
+ except:
+ pass
+ else:
+ try:
+ print(cmd("ssh-keygen -l -E sha256 -f " + keyfile) + "\n", flush=True)
+ # Ignore invalid public keys
+ except:
+ pass
+else:
+ print("No SSH server public keys are found.", flush=True)
+
+sys.exit(0)