summaryrefslogtreecommitdiffstats
path: root/src/vpp-api/python/vpp_papi/vpp_format.py
blob: 415070c419675fa04ea012ba9002bd1954db516a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
#
# Copyright (c) 2018 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

from socket import inet_pton, AF_INET6, AF_INET
import socket
import ipaddress
from . import macaddress

try:
    text_type = unicode
except NameError:
    text_type = str

# Copies from vl_api_address_t definition
ADDRESS_IP4 = 0
ADDRESS_IP6 = 1

#
# Type conversion for input arguments and return values
#


def format_vl_api_address_t(args):
    try:
        return {'un': {'ip6': inet_pton(AF_INET6, args)},
                'af': ADDRESS_IP6}
    # PY2: raises socket.error
    # PY3: raises OSError
    except (socket.error, OSError):
        return {'un': {'ip4': inet_pton(AF_INET, args)},
                'af': ADDRESS_IP4}


def format_vl_api_prefix_t(args):
    if isinstance(args, (ipaddress.IPv4Network, ipaddress.IPv6Network)):
        return {'prefix': format_vl_api_address_t(
            text_type(args.network_address)),
                'len': int(args.prefixlen)}
    p, length = args.split('/')
    return {'address': format_vl_api_address_t(p),
            'address_length': int(length)}


def format_vl_api_ip6_prefix_t(args):
    if isinstance(args, ipaddress.IPv6Network):
        return {'prefix': args.network_address.packed,
                'len': int(args.prefixlen)}
    p, length = args.split('/')
    return {'prefix': inet_pton(AF_INET6, p),
            'len': int(length)}


def format_vl_api_ip4_prefix_t(args):
    if isinstance(args, ipaddress.IPv4Network):
        return {'prefix': args.network_address.packed,
                'len': int(args.prefixlen)}
    p, length = args.split('/')
    return {'prefix': inet_pton(AF_INET, p),
            'len': int(length)}


conversion_table = {
    'vl_api_ip6_address_t':
    {
        'IPv6Address': lambda o: o.packed,
        'str': lambda s: inet_pton(AF_INET6, s)
    },
    'vl_api_ip4_address_t':
    {
        'IPv4Address': lambda o: o.packed,
        'str': lambda s: inet_pton(AF_INET, s)
    },
    'vl_api_ip6_prefix_t':
    {
        'IPv6Network': lambda o: {'prefix': o.network_address.packed,
                                  'len': o.prefixlen},
        'str': lambda s: format_vl_api_ip6_prefix_t(s)
    },
    'vl_api_ip4_prefix_t':
    {
        'IPv4Network': lambda o: {'prefix': o.network_address.packed,
                                  'len': o.prefixlen},
        'str': lambda s: format_vl_api_ip4_prefix_t(s)
    },
    'vl_api_address_t':
    {
        'IPv4Address': lambda o: {'af': ADDRESS_IP4, 'un': {'ip4': o.packed}},
        'IPv6Address': lambda o: {'af': ADDRESS_IP6, 'un': {'ip6': o.packed}},
        'str': lambda s: format_vl_api_address_t(s)
    },
    'vl_api_prefix_t':
    {
        'IPv4Network': lambda o: {'prefix':
                                  {'af': ADDRESS_IP4, 'un':
                                   {'ip4': o.network_address.packed}},
                                  'len': o.prefixlen},
        'IPv6Network': lambda o: {'prefix':
                                  {'af': ADDRESS_IP6, 'un':
                                   {'ip6': o.network_address.packed}},
                                  'len': o.prefixlen},
        'str': lambda s: format_vl_api_prefix_t(s)
    },
    'vl_api_mac_address_t':
    {
        'MACAddress': lambda o: o.packed,
        'str': lambda s: macaddress.mac_pton(s)
    },
}


def unformat_api_address_t(o):
    if o.af == 1:
        return ipaddress.IPv6Address(o.un.ip6)
    if o.af == 0:
        return ipaddress.IPv4Address(o.un.ip4)


def unformat_api_prefix_t(o):
    if isinstance(o.address, ipaddress.IPv4Address):
        return ipaddress.IPv4Network((o.address, o.address_length), False)
    if isinstance(o.address, ipaddress.IPv6Address):
        return ipaddress.IPv6Network((o.address, o.address_length), False)


conversion_unpacker_table = {
    'vl_api_ip6_address_t': lambda o: ipaddress.IPv6Address(o),
    'vl_api_ip6_prefix_t': lambda o: ipaddress.IPv6Network((o.prefix, o.len)),
    'vl_api_ip4_address_t': lambda o: ipaddress.IPv4Address(o),
    'vl_api_ip4_prefix_t': lambda o: ipaddress.IPv4Network((o.prefix, o.len)),
    'vl_api_address_t': lambda o: unformat_api_address_t(o),
    'vl_api_prefix_t': lambda o: unformat_api_prefix_t(o),
    'vl_api_mac_address_t': lambda o: macaddress.MACAddress(o),
}