Updated script that can be controled by Nodejs web app

lib/python3.13/site-packages/dns/rdtypes/ANY/CERT.py

@@ -0,0 +1,116 @@
+# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
+
+# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose with or without fee is hereby granted,
+# provided that the above copyright notice and this permission notice
+# appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import base64
+import struct
+
+import dns.dnssectypes
+import dns.exception
+import dns.immutable
+import dns.rdata
+import dns.tokenizer
+
+_ctype_by_value = {
+    1: "PKIX",
+    2: "SPKI",
+    3: "PGP",
+    4: "IPKIX",
+    5: "ISPKI",
+    6: "IPGP",
+    7: "ACPKIX",
+    8: "IACPKIX",
+    253: "URI",
+    254: "OID",
+}
+
+_ctype_by_name = {
+    "PKIX": 1,
+    "SPKI": 2,
+    "PGP": 3,
+    "IPKIX": 4,
+    "ISPKI": 5,
+    "IPGP": 6,
+    "ACPKIX": 7,
+    "IACPKIX": 8,
+    "URI": 253,
+    "OID": 254,
+}
+
+
+def _ctype_from_text(what):
+    v = _ctype_by_name.get(what)
+    if v is not None:
+        return v
+    return int(what)
+
+
+def _ctype_to_text(what):
+    v = _ctype_by_value.get(what)
+    if v is not None:
+        return v
+    return str(what)
+
+
+@dns.immutable.immutable
+class CERT(dns.rdata.Rdata):
+    """CERT record"""
+
+    # see RFC 4398
+
+    __slots__ = ["certificate_type", "key_tag", "algorithm", "certificate"]
+
+    def __init__(
+        self, rdclass, rdtype, certificate_type, key_tag, algorithm, certificate
+    ):
+        super().__init__(rdclass, rdtype)
+        self.certificate_type = self._as_uint16(certificate_type)
+        self.key_tag = self._as_uint16(key_tag)
+        self.algorithm = self._as_uint8(algorithm)
+        self.certificate = self._as_bytes(certificate)
+
+    def to_text(self, origin=None, relativize=True, **kw):
+        certificate_type = _ctype_to_text(self.certificate_type)
+        return "%s %d %s %s" % (
+            certificate_type,
+            self.key_tag,
+            dns.dnssectypes.Algorithm.to_text(self.algorithm),
+            dns.rdata._base64ify(self.certificate, **kw),
+        )
+
+    @classmethod
+    def from_text(
+        cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
+    ):
+        certificate_type = _ctype_from_text(tok.get_string())
+        key_tag = tok.get_uint16()
+        algorithm = dns.dnssectypes.Algorithm.from_text(tok.get_string())
+        b64 = tok.concatenate_remaining_identifiers().encode()
+        certificate = base64.b64decode(b64)
+        return cls(rdclass, rdtype, certificate_type, key_tag, algorithm, certificate)
+
+    def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
+        prefix = struct.pack(
+            "!HHB", self.certificate_type, self.key_tag, self.algorithm
+        )
+        file.write(prefix)
+        file.write(self.certificate)
+
+    @classmethod
+    def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
+        (certificate_type, key_tag, algorithm) = parser.get_struct("!HHB")
+        certificate = parser.get_remaining()
+        return cls(rdclass, rdtype, certificate_type, key_tag, algorithm, certificate)