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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 
     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 
     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 
     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