2 * Copyright (C) 2016 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include <sys/socket.h>
20 #include <linux/netlink.h>
21 #include <linux/sock_diag.h>
22 #include <linux/inet_diag.h>
27 #include "UidRanges.h"
35 static const int kBufferSize = 4096;
37 // Callback function that is called once for every socket in the dump. A return value of true
38 // means destroy the socket.
39 typedef std::function<bool(uint8_t proto, const inet_diag_msg *)> DumpCallback;
41 struct DestroyRequest {
44 } __attribute__((__packed__));
46 SockDiag() : mSock(-1), mWriteSock(-1), mSocketsDestroyed(0) {}
48 virtual ~SockDiag() { closeSocks(); }
50 int sendDumpRequest(uint8_t proto, uint8_t family, uint32_t states);
51 int sendDumpRequest(uint8_t proto, uint8_t family, const char *addrstr);
52 int readDiagMsg(uint8_t proto, DumpCallback callback);
53 int sockDestroy(uint8_t proto, const inet_diag_msg *);
54 int destroySockets(const char *addrstr);
55 int destroySockets(uint8_t proto, uid_t uid);
56 int destroySockets(const UidRanges& uidRanges, const std::set<uid_t>& skipUids);
61 int mSocketsDestroyed;
62 int sendDumpRequest(uint8_t proto, uint8_t family, uint32_t states, iovec *iov, int iovcnt);
63 int destroySockets(uint8_t proto, int family, const char *addrstr);
64 int destroyLiveSockets(DumpCallback destroy);
65 bool hasSocks() { return mSock != -1 && mWriteSock != -1; }
66 void closeSocks() { close(mSock); close(mWriteSock); mSock = mWriteSock = -1; }