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authorNataliia Solomko <natalirs1985@gmail.com>2024-09-09 15:11:13 +0300
committerNataliia Solomko <natalirs1985@gmail.com>2024-09-10 10:08:57 +0300
commit7d20a52e02bec76474ca060fcb1eaeca52c52001 (patch)
tree2833c9f4bc685d3d5dd8d95505e1227b1386b971
parentc78c5bd7e65b19e0e50ef6944dc74fb33660ff71 (diff)
downloadvyos-1x-7d20a52e02bec76474ca060fcb1eaeca52c52001.tar.gz
vyos-1x-7d20a52e02bec76474ca060fcb1eaeca52c52001.zip
op_mode: T6181: A feature for checking ports
-rw-r--r--Makefile1
-rw-r--r--op-mode-definitions/execute-port-scan.xml.in34
-rw-r--r--src/op_mode/execute_port-scan.py155
3 files changed, 190 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index c83380be5..411399c3a 100644
--- a/Makefile
+++ b/Makefile
@@ -64,6 +64,7 @@ op_mode_definitions: $(op_xml_obj)
ln -s ../node.tag $(OP_TMPL_DIR)/mtr/node.tag/node.tag/
ln -s ../node.tag $(OP_TMPL_DIR)/monitor/traceroute/node.tag/node.tag/
ln -s ../node.tag $(OP_TMPL_DIR)/monitor/traffic/interface/node.tag/node.tag/
+ ln -s ../node.tag $(OP_TMPL_DIR)/execute/port-scan/host/node.tag/node.tag/
# XXX: test if there are empty node.def files - this is not allowed as these
# could mask help strings or mandatory priority statements
diff --git a/op-mode-definitions/execute-port-scan.xml.in b/op-mode-definitions/execute-port-scan.xml.in
new file mode 100644
index 000000000..52cdab5f0
--- /dev/null
+++ b/op-mode-definitions/execute-port-scan.xml.in
@@ -0,0 +1,34 @@
+<?xml version="1.0"?>
+<interfaceDefinition>
+ <node name="execute">
+ <children>
+ <node name="port-scan">
+ <properties>
+ <help>Scan network for open ports</help>
+ </properties>
+ <children>
+ <tagNode name="host">
+ <properties>
+ <help>IP address or domain name of the host to scan (scan all ports 1-65535)</help>
+ <completionHelp>
+ <list>&lt;hostname&gt; &lt;x.x.x.x&gt; &lt;h:h:h:h:h:h:h:h&gt;</list>
+ </completionHelp>
+ </properties>
+ <command>nmap -p- -T4 --max-retries=1 --host-timeout=30s "$4"</command>
+ <children>
+ <leafNode name="node.tag">
+ <properties>
+ <help>Port scan options</help>
+ <completionHelp>
+ <script>${vyos_op_scripts_dir}/execute_port-scan.py --get-options-nested "${COMP_WORDS[@]}"</script>
+ </completionHelp>
+ </properties>
+ <command>${vyos_op_scripts_dir}/execute_port-scan.py "${@:4}"</command>
+ </leafNode>
+ </children>
+ </tagNode>
+ </children>
+ </node>
+ </children>
+ </node>
+</interfaceDefinition>
diff --git a/src/op_mode/execute_port-scan.py b/src/op_mode/execute_port-scan.py
new file mode 100644
index 000000000..bf17d0379
--- /dev/null
+++ b/src/op_mode/execute_port-scan.py
@@ -0,0 +1,155 @@
+#! /usr/bin/env python3
+#
+# Copyright (C) 2024 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import sys
+
+from vyos.utils.process import call
+
+
+options = {
+ 'port': {
+ 'cmd': '{command} -p {value}',
+ 'type': '<1-65535> <list>',
+ 'help': 'Scan specified ports.'
+ },
+ 'tcp': {
+ 'cmd': '{command} -sT',
+ 'type': 'noarg',
+ 'help': 'Use TCP scan.'
+ },
+ 'udp': {
+ 'cmd': '{command} -sU',
+ 'type': 'noarg',
+ 'help': 'Use UDP scan.'
+ },
+ 'skip-ping': {
+ 'cmd': '{command} -Pn',
+ 'type': 'noarg',
+ 'help': 'Skip the Nmap discovery stage altogether.'
+ },
+ 'ipv6': {
+ 'cmd': '{command} -6',
+ 'type': 'noarg',
+ 'help': 'Enable IPv6 scanning.'
+ },
+}
+
+nmap = 'sudo /usr/bin/nmap'
+
+
+class List(list):
+ def first(self):
+ return self.pop(0) if self else ''
+
+ def last(self):
+ return self.pop() if self else ''
+
+ def prepend(self, value):
+ self.insert(0, value)
+
+
+def completion_failure(option: str) -> None:
+ """
+ Shows failure message after TAB when option is wrong
+ :param option: failure option
+ :type str:
+ """
+ sys.stderr.write('\n\n Invalid option: {}\n\n'.format(option))
+ sys.stdout.write('<nocomps>')
+ sys.exit(1)
+
+
+def expansion_failure(option, completions):
+ reason = 'Ambiguous' if completions else 'Invalid'
+ sys.stderr.write(
+ '\n\n {} command: {} [{}]\n\n'.format(reason, ' '.join(sys.argv),
+ option))
+ if completions:
+ sys.stderr.write(' Possible completions:\n ')
+ sys.stderr.write('\n '.join(completions))
+ sys.stderr.write('\n')
+ sys.stdout.write('<nocomps>')
+ sys.exit(1)
+
+
+def complete(prefix):
+ return [o for o in options if o.startswith(prefix)]
+
+
+def convert(command, args):
+ while args:
+ shortname = args.first()
+ longnames = complete(shortname)
+ if len(longnames) != 1:
+ expansion_failure(shortname, longnames)
+ longname = longnames[0]
+ if options[longname]['type'] == 'noarg':
+ command = options[longname]['cmd'].format(
+ command=command, value='')
+ elif not args:
+ sys.exit(f'port-scan: missing argument for {longname} option')
+ else:
+ command = options[longname]['cmd'].format(
+ command=command, value=args.first())
+ return command
+
+
+if __name__ == '__main__':
+ args = List(sys.argv[1:])
+ host = args.first()
+
+ if host == '--get-options-nested':
+ args.first() # pop execute
+ args.first() # pop port-scan
+ args.first() # pop host
+ args.first() # pop <host>
+ usedoptionslist = []
+ while args:
+ option = args.first() # pop option
+ matched = complete(option) # get option parameters
+ usedoptionslist.append(option) # list of used options
+ # Select options
+ if not args:
+ # remove from Possible completions used options
+ for o in usedoptionslist:
+ if o in matched:
+ matched.remove(o)
+ if not matched:
+ sys.stdout.write('<nocomps>')
+ else:
+ sys.stdout.write(' '.join(matched))
+ sys.exit(0)
+
+ if len(matched) > 1:
+ sys.stdout.write(' '.join(matched))
+ sys.exit(0)
+ # If option doesn't have value
+ if matched:
+ if options[matched[0]]['type'] == 'noarg':
+ continue
+ else:
+ # Unexpected option
+ completion_failure(option)
+
+ value = args.first() # pop option's value
+ if not args:
+ matched = complete(option)
+ helplines = options[matched[0]]['type']
+ sys.stdout.write(helplines)
+ sys.exit(0)
+
+ command = convert(nmap, args)
+ call(f'{command} -T4 {host}')