utils.cpp revision 6c929510474caa14dc9d56826b2c65552861d6b3 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <arpa/inet.h>
18#include <linux/socket.h>
19
20#include <binder/Parcel.h>
21
22namespace android {
23
24bool canSerializeSockaddr(const struct sockaddr_storage* addr) {
25    switch (addr->ss_family) {
26        case AF_INET:
27        case AF_INET6:
28            return true;
29        default:
30            return false;
31    }
32}
33
34void serializeSockaddr(Parcel* p, const struct sockaddr_storage* addr) {
35    switch (addr->ss_family) {
36        case AF_INET: {
37            const struct sockaddr_in* s =
38                reinterpret_cast<const struct sockaddr_in*>(addr);
39            p->writeInt32(AF_INET);
40            p->writeInt32(ntohl(s->sin_addr.s_addr));
41            p->writeInt32(static_cast<int32_t>(ntohs(s->sin_port)));
42        } break;
43
44        case AF_INET6: {
45            const struct sockaddr_in6* s =
46                reinterpret_cast<const struct sockaddr_in6*>(addr);
47            const int32_t* a =
48                reinterpret_cast<const int32_t*>(s->sin6_addr.s6_addr);
49            p->writeInt32(AF_INET6);
50            p->writeInt32(ntohl(a[0]));
51            p->writeInt32(ntohl(a[1]));
52            p->writeInt32(ntohl(a[2]));
53            p->writeInt32(ntohl(a[3]));
54            p->writeInt32(static_cast<int32_t>(ntohs(s->sin6_port)));
55            p->writeInt32(ntohl(s->sin6_flowinfo));
56            p->writeInt32(ntohl(s->sin6_scope_id));
57        } break;
58    }
59}
60
61void deserializeSockaddr(const Parcel* p, struct sockaddr_storage* addr) {
62    memset(addr, 0, sizeof(addr));
63
64    addr->ss_family = p->readInt32();
65    switch(addr->ss_family) {
66        case AF_INET: {
67            struct sockaddr_in* s =
68                reinterpret_cast<struct sockaddr_in*>(addr);
69            s->sin_addr.s_addr = htonl(p->readInt32());
70            s->sin_port = htons(static_cast<uint16_t>(p->readInt32()));
71        } break;
72
73        case AF_INET6: {
74            struct sockaddr_in6* s =
75                reinterpret_cast<struct sockaddr_in6*>(addr);
76            int32_t* a = reinterpret_cast<int32_t*>(s->sin6_addr.s6_addr);
77
78            a[0] = htonl(p->readInt32());
79            a[1] = htonl(p->readInt32());
80            a[2] = htonl(p->readInt32());
81            a[3] = htonl(p->readInt32());
82            s->sin6_port = htons(static_cast<uint16_t>(p->readInt32()));
83            s->sin6_flowinfo = htonl(p->readInt32());
84            s->sin6_scope_id = htonl(p->readInt32());
85        } break;
86    }
87}
88
89}  // namespace android
90