V2x standards

.config/ci/install.ps1

@@ -19,3 +19,6 @@ python -m pip install --upgrade pip setuptools wheel --ignore-installed
 
 # Make sure tox is installed and up to date
 python -m pip install -U tox --ignore-installed
+
+# Optional test dependency for ASN.1 OER interoperability tests
+python -m pip install asn1tools

.config/ci/install.sh

@@ -53,5 +53,8 @@ python -m pip install --upgrade pip setuptools wheel --ignore-installed
 # Make sure tox is installed and up to date
 python -m pip install -U tox --ignore-installed
 
+# Optional test dependency for ASN.1 OER interoperability tests
+python -m pip install asn1tools
+
 # Dump Environment (so that we can check PATH, UT_FLAGS, etc.)
 set

.config/codespell_ignore.txt

@@ -53,3 +53,8 @@ wan
 wanna
 webp
 widgits
+uper
+UPER
+uPER
+acn
+ACN

scapy/all.py

@@ -41,6 +41,8 @@
 
 from scapy.asn1.asn1 import *
 from scapy.asn1.ber import *
+from scapy.asn1.oer import *
+from scapy.asn1.uper import *
 from scapy.asn1.mib import *
 
 from scapy.pipetool import *

scapy/asn1/ber.py

@@ -11,6 +11,7 @@
 
 # Good read: https://luca.ntop.org/Teaching/Appunti/asn1.html
 
+from scapy.config import conf
 from scapy.error import warning
 from scapy.compat import chb, orb, bytes_encode
 from scapy.utils import binrepr, inet_aton, inet_ntoa
@@ -261,7 +262,9 @@ def BER_tagging_enc(s, implicit_tag=None, explicit_tag=None):
         if implicit_tag is not None:
             s = BER_id_enc(implicit_tag) + s[1:]
         elif explicit_tag is not None:
-            s = BER_id_enc(explicit_tag) + BER_len_enc(len(s)) + s
+            s = BER_id_enc(explicit_tag) + BER_len_enc(
+                len(s), size=conf.ASN1_default_long_size,
+            ) + s
     return s
 
 #    [ BER classes ]    #
@@ -633,6 +636,8 @@ def enc(cls, _ll, size_len=0):
             ll = _ll
         else:
             ll = b"".join(x.enc(cls.codec) for x in _ll)
+        if not size_len:
+            size_len = conf.ASN1_default_long_size
         return chb(int(cls.tag)) + BER_len_enc(len(ll), size=size_len) + ll
 
     @classmethod