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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 
22 namespace android {
23 
canSerializeSockaddr(const struct sockaddr_storage * addr)24 bool 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 
serializeSockaddr(Parcel * p,const struct sockaddr_storage * addr)34 void 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 
deserializeSockaddr(const Parcel * p,struct sockaddr_storage * addr)61 void 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