tests: changes for scapy 2.4.3 migration

Type: fix
Change-Id: I7e041b666dabd90df23a920a1f1d99db4c10ddfe
Signed-off-by: snaramre <snaramre@cisco.com>

2 files changed, 193 insertions, 0 deletions

diff --git a/test/patches/scapy-2.4.3/cdp.patch b/test/patches/scapy-2.4.3/cdp.patch
new file mode 100644
index 00000000000..de16f5d5079
--- /dev/null
+++ b/test/patches/scapy-2.4.3/cdp.patch
@@ -0,0 +1,31 @@
+diff --git a/scapy/contrib/cdp.py b/scapy/contrib/cdp.py
+index c8b7f106..7b1ff64d 100644
+--- a/scapy/contrib/cdp.py
++++ b/scapy/contrib/cdp.py
+@@ -102,7 +102,8 @@ def _CDPGuessPayloadClass(p, **kargs):
+ class CDPMsgGeneric(Packet):
+     name = "CDP Generic Message"
+     fields_desc = [ XShortEnumField("type", None, _cdp_tlv_types),
+-                    FieldLenField("len", None, "val", "!H"),
++                    FieldLenField("len", None, "val", "!H",
++                                  adjust=lambda pkt, x: x + 4),
+                     StrLenField("val", "", length_from=lambda x:x.len - 4) ]
+ 
+ 
+@@ -178,5 +179,6 @@ class CDPMsgAddr(CDPMsgGeneric):
+ class CDPMsgPortID(CDPMsgGeneric):
+     name = "Port ID"
+     fields_desc = [ XShortEnumField("type", 0x0003, _cdp_tlv_types),
+-                    FieldLenField("len", None, "iface", "!H"),
++                    FieldLenField("len", None, "iface", "!H",
++                                  adjust=lambda pkt, x: x + 4),
+                     StrLenField("iface", "Port 1", length_from=lambda x:x.len - 4) ]
+@@ -319,7 +319,7 @@ class _CDPChecksum:
+         This padding is only used for checksum computation.  The original
+         packet should not be altered."""
+         if len(pkt) % 2:
+-            last_chr = pkt[-1]
++            last_chr = pkt[len(pkt)-1:]
+             if last_chr <= b'\x80':
+                 return pkt[:-1] + b'\x00' + last_chr
+             else:
diff --git a/test/patches/scapy-2.4.3/ipsec.patch b/test/patches/scapy-2.4.3/ipsec.patch
new file mode 100644
index 00000000000..993604768ff
--- /dev/null
+++ b/test/patches/scapy-2.4.3/ipsec.patch
@@ -0,0 +1,162 @@
+diff --git a/scapy/layers/ipsec.py b/scapy/layers/ipsec.py
+index f8c601fa..f566d288 100644
+--- a/scapy/layers/ipsec.py
++++ b/scapy/layers/ipsec.py
+@@ -359,11 +359,8 @@ class CryptAlgo(object):
+             encryptor = cipher.encryptor()
+ 
+             if self.is_aead:
+-                if esn_en:
+-                    aad = struct.pack('!LLL', esp.spi, esn, esp.seq)
+-                else:
+-                    aad = struct.pack('!LL', esp.spi, esp.seq)
+-                encryptor.authenticate_additional_data(aad)
++                encryptor.authenticate_additional_data(sa.build_aead(esp))
++
+                 data = encryptor.update(data) + encryptor.finalize()
+                 data += encryptor.tag[:self.icv_size]
+             else:
+@@ -401,12 +398,7 @@ class CryptAlgo(object):
+ 
+             if self.is_aead:
+                 # Tag value check is done during the finalize method
+-                if esn_en:
+-                    decryptor.authenticate_additional_data(
+-                        struct.pack('!LLL', esp.spi, esn, esp.seq))
+-                else:
+-                    decryptor.authenticate_additional_data(
+-                        struct.pack('!LL', esp.spi, esp.seq))
++                decryptor.authenticate_additional_data(sa.build_aead(esp))
+             try:
+                 data = decryptor.update(data) + decryptor.finalize()
+             except InvalidTag as err:
+@@ -545,7 +537,7 @@ class AuthAlgo(object):
+         else:
+             return self.mac(key, self.digestmod(), default_backend())
+ 
+-    def sign(self, pkt, key):
++    def sign(self, pkt, key, trailer=None):
+         """
+         Sign an IPsec (ESP or AH) packet with this algo.
+ 
+@@ -561,16 +553,20 @@ class AuthAlgo(object):
+ 
+         if pkt.haslayer(ESP):
+             mac.update(raw(pkt[ESP]))
++            if trailer:
++                mac.update(trailer)
+             pkt[ESP].data += mac.finalize()[:self.icv_size]
+ 
+         elif pkt.haslayer(AH):
+             clone = zero_mutable_fields(pkt.copy(), sending=True)
+             mac.update(raw(clone))
++            if trailer:
++                mac.update(trailer)
+             pkt[AH].icv = mac.finalize()[:self.icv_size]
+ 
+         return pkt
+ 
+-    def verify(self, pkt, key):
++    def verify(self, pkt, key, trailer):
+         """
+         Check that the integrity check value (icv) of a packet is valid.
+ 
+@@ -602,6 +598,8 @@ class AuthAlgo(object):
+             clone = zero_mutable_fields(pkt.copy(), sending=False)
+ 
+         mac.update(raw(clone))
++        if trailer:
++            mac.update(trailer) # bytearray(4)) #raw(trailer))
+         computed_icv = mac.finalize()[:self.icv_size]
+ 
+         # XXX: Cannot use mac.verify because the ICV can be truncated
+@@ -864,6 +862,23 @@ class SecurityAssociation(object):
+                 raise TypeError('nat_t_header must be %s' % UDP.name)
+         self.nat_t_header = nat_t_header
+ 
++    def build_aead(self, esp):
++        if self.esn_en:
++            return (struct.pack('!LLL', esp.spi, self.seq_num >> 32, esp.seq))
++        else:
++            return (struct.pack('!LL', esp.spi, esp.seq))
++
++    def build_seq_num(self, num):
++        # only lower order bits are  transmitted
++        # higher order bits are used in the ICV
++        lower = num & 0xffffffff
++        upper = num >> 32
++
++        if self.esn_en:
++            return lower, struct.pack("!I", upper)
++        else:
++            return lower, None
++
+     def check_spi(self, pkt):
+         if pkt.spi != self.spi:
+             raise TypeError('packet spi=0x%x does not match the SA spi=0x%x' %
+@@ -877,7 +892,8 @@ class SecurityAssociation(object):
+             if len(iv) != self.crypt_algo.iv_size:
+                 raise TypeError('iv length must be %s' % self.crypt_algo.iv_size)  # noqa: E501
+ 
+-        esp = _ESPPlain(spi=self.spi, seq=seq_num or self.seq_num, iv=iv)
++        low_seq_num, high_seq_num = self.build_seq_num(seq_num or self.seq_num)
++        esp = _ESPPlain(spi=self.spi, seq=low_seq_num, iv=iv)
+ 
+         if self.tunnel_header:
+             tunnel = self.tunnel_header.copy()
+@@ -901,7 +917,7 @@ class SecurityAssociation(object):
+                                       esn_en=esn_en or self.esn_en,
+                                       esn=esn or self.esn)
+ 
+-        self.auth_algo.sign(esp, self.auth_key)
++        self.auth_algo.sign(esp, self.auth_key, high_seq_num)
+ 
+         if self.nat_t_header:
+             nat_t_header = self.nat_t_header.copy()
+@@ -928,7 +944,8 @@ class SecurityAssociation(object):
+ 
+     def _encrypt_ah(self, pkt, seq_num=None):
+ 
+-        ah = AH(spi=self.spi, seq=seq_num or self.seq_num,
++        low_seq_num, high_seq_num = self.build_seq_num(seq_num or self.seq_num)
++        ah = AH(spi=self.spi, seq=low_seq_num,
+                 icv=b"\x00" * self.auth_algo.icv_size)
+ 
+         if self.tunnel_header:
+@@ -968,7 +985,8 @@ class SecurityAssociation(object):
+         else:
+             ip_header.plen = len(ip_header.payload) + len(ah) + len(payload)
+ 
+-        signed_pkt = self.auth_algo.sign(ip_header / ah / payload, self.auth_key)  # noqa: E501
++        signed_pkt = self.auth_algo.sign(ip_header / ah / payload,
++                                         self.auth_key, high_seq_num)  # noqa: E501
+ 
+         # sequence number must always change, unless specified by the user
+         if seq_num is None:
+@@ -1005,11 +1023,12 @@ class SecurityAssociation(object):
+ 
+     def _decrypt_esp(self, pkt, verify=True, esn_en=None, esn=None):
+ 
++        low_seq_num, high_seq_num = self.build_seq_num(self.seq_num)
+         encrypted = pkt[ESP]
+ 
+         if verify:
+             self.check_spi(pkt)
+-            self.auth_algo.verify(encrypted, self.auth_key)
++            self.auth_algo.verify(encrypted, self.auth_key, high_seq_num)
+ 
+         esp = self.crypt_algo.decrypt(self, encrypted, self.crypt_key,
+                                       self.crypt_algo.icv_size or
+@@ -1050,9 +1069,10 @@ class SecurityAssociation(object):
+ 
+     def _decrypt_ah(self, pkt, verify=True):
+ 
++        low_seq_num, high_seq_num = self.build_seq_num(self.seq_num)
+         if verify:
+             self.check_spi(pkt)
+-            self.auth_algo.verify(pkt, self.auth_key)
++            self.auth_algo.verify(pkt, self.auth_key, high_seq_num)
+ 
+         ah = pkt[AH]
+         payload = ah.payload
+