1 files changed, 62 insertions, 0 deletions
diff --git a/web-tools/api/v0/ipv4/address/index.py b/web-tools/api/v0/ipv4/address/index.py
new file mode 100755
index 0000000..7a08c34
--- /dev/null
+++ b/web-tools/api/v0/ipv4/address/index.py
@@ -0,0 +1,62 @@
+#!/usr/bin/python3
+
+# Copyright (C) 2013-2021 Daniel Baumann <daniel@debian.org>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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 <https://www.gnu.org/licenses/>.
+
+from ipaddress import IPv4Address
+from json import dumps
+from os import getenv
+from sys import exit
+
+from pygments import highlight
+from pygments.lexers import JsonLexer
+from pygments.formatters import TerminalFormatter
+
+def v0_ipv4_address():
+    address = getenv('REMOTE_ADDR')
+    cgi = getenv('GATEWAY_INTERFACE')
+
+    try:
+        ip = str(IPv4Address(address))
+        message = 'valid IPv4 address'
+        status = True
+    except ValueError:
+        ip = None
+        message = 'invalid IPv4 address'
+        status = False
+
+    json = \
+    {
+      'data': {
+        'ipv4_address': ip,
+      },
+      'meta': {
+        'status': status,
+        'message': message,
+      },
+    }
+
+    if cgi:
+        print('Content-Type: application/json\n')
+        print(dumps(json))
+    else:
+        print(highlight(dumps(json, indent=4), JsonLexer(), TerminalFormatter()))
+
+    exit(0)
+
+if __name__ == '__main__':
+    v0_ipv4_address()