progress in packet builder module

2 files changed, 149 insertions, 3 deletions

diff --git a/scripts/automation/trex_control_plane/client_utils/outer_packages.py b/scripts/automation/trex_control_plane/client_utils/outer_packages.py
index 3ba73ec1..a6c9a2eb 100644
--- a/scripts/automation/trex_control_plane/client_utils/outer_packages.py
+++ b/scripts/automation/trex_control_plane/client_utils/outer_packages.py
@@ -9,7 +9,7 @@ ROOT_PATH           = os.path.abspath(os.path.join(CURRENT_PATH, os.pardir))
 PATH_TO_PYTHON_LIB  = os.path.abspath(os.path.join(ROOT_PATH, os.pardir, os.pardir, 'external_libs'))
 
 CLIENT_UTILS_MODULES = ['zmq',
-                        'dpkt-1.8.6.2'
+                        'dpkt-1.8.6'
                         ]
 
 
diff --git a/scripts/automation/trex_control_plane/client_utils/packet_builder.py b/scripts/automation/trex_control_plane/client_utils/packet_builder.py
index c33444a7..172dcda2 100644
--- a/scripts/automation/trex_control_plane/client_utils/packet_builder.py
+++ b/scripts/automation/trex_control_plane/client_utils/packet_builder.py
@@ -3,9 +3,155 @@
 
 import outer_packages
 import dpkt
+import socket
+import binascii
+
 
 class CTRexPktBuilder(object):
     """docstring for CTRexPktBuilder"""
-    def __init__(self, arg):
+    def __init__(self):
         super(CTRexPktBuilder, self).__init__()
-        self.arg = arg
\ No newline at end of file
+        self.packet = None
+        self.vm = CTRexPktBuilder.CTRexVM(self.packet)
+
+    def add_l2_header(self):
+        pass
+
+    def add_l3_header(self):
+        pass
+
+    def add_pkt_payload(self):
+        pass
+
+    # VM access methods
+    def set_vm_ip_range(self, ip_start, ip_end, ip_type="ipv4"):
+        pass
+
+    def set_vm_range_type(self, ip_type):
+        pass
+
+    def set_vm_core_mask(self, ip_type):
+        pass
+
+    def get_vm_data(self):
+        pass
+
+    def dump_pkt(self):
+        pkt_in_hex = binascii.hexlify(str(self.packet))
+        return [pkt_in_hex[i:i+2] for i in range(0, len(pkt_in_hex), 2)]
+
+    # ----- useful shortcut methods ----- #
+    def gen_dns_packet(self):
+        pass
+
+    # ----- internal methods ----- #
+    @staticmethod
+    def _is_valid_ip_addr(ip_addr, ip_type):
+        if ip_type == "ipv4":
+            try:
+                socket.inet_pton(socket.AF_INET, ip_addr)
+            except AttributeError:  # no inet_pton here, sorry
+                try:
+                    socket.inet_aton(ip_addr)
+                except socket.error:
+                    return False
+                return ip_addr.count('.') == 3
+            except socket.error:  # not a valid address
+                return False
+            return True
+        elif ip_type == "ipv6":
+            try:
+                socket.inet_pton(socket.AF_INET6, ip_addr)
+            except socket.error:  # not a valid address
+                return False
+            return True
+        else:
+            raise CTRexPktBuilder.IPAddressError()
+
+    # ------ private classes ------
+    class CTRexVM(object):
+        """docstring for CTRexVM"""
+        def __init__(self, packet):
+            super(CTRexPktBuilder.CTRexVM, self).__init__()
+            self.packet = packet
+            self.vm_variables = {}
+
+        def add_vm_variable(self, name):
+            if name not in self.vm_variables.keys():
+                self.vm_variables[name] = self.CTRexVMVariable(name)
+
+        def fix_checksum_ipv4(self):
+            pass
+
+        def flow_man_simple(self):
+            pass
+
+        def write_to_pkt(self):
+            pass
+
+        def dump(self):
+            return [var.dump()
+                    for var in self.vm_variables
+                    if var.is_validty()]
+
+        class CTRexVMVariable(object):
+            VALID_SIZE = [1, 2, 4, 8]
+            VALID_TYPE = ["inc", "dec", "random"]
+            VALID_CORE_MASK = ["split", "none"]
+
+            def __init__(self, name):
+                super(CTRexPktBuilder.CTRexVM.CTRexVMVariable, self).__init__()
+                self.name = name
+                self.size = 4
+                self.big_endian = True
+                self.type = "inc"
+                self.core_mask = "none"
+                self.init_addr = "10.0.0.1"
+                self.min_addr = str(self.init_addr)
+                self.max_addr = str(self.init_addr)
+
+            def is_valid(self):
+                if self.size not in self.VALID_SIZE:
+                    return False
+                if self.type not in self.VALID_TYPE:
+                    return False
+                if self.core_mask not in self.VALID_CORE_MASK:
+                    return False
+                return True
+
+            def dump(self):
+                return {"name" : self.name,
+                        "Size" : self.size,
+                        "big_endian" : self.big_endian,
+                        "type" : self.type,
+                        "core_mask" : self.core_mask,
+                        "init_addr" : self.init_addr,
+                        "min_addr" : self.min_addr,
+                        "max_addr" : self.max_addr}
+
+    class CPacketBuildException(Exception):
+        """
+        This is the general Packet error exception class.
+        """
+        def __init__(self, code, message):
+            self.code = code
+            self.message = message
+
+        def __str__(self):
+            return self.__repr__()
+
+        def __repr__(self):
+            return u"[errcode:%r] %r" % (self.code, self.message)
+
+    class IPAddressError(CPacketBuildException):
+        """
+        This exception is used to indicate an error on the IP addressing part of the packet.
+        """
+        def __init__(self, message=''):
+            self._default_message = 'Illegal type of IP addressing has been provided.'
+            self.message = message or self._default_message
+            super(CTRexPktBuilder.IPAddressError, self).__init__(-11, self.message)
+
+
+if __name__ == "__main__":
+    pass