San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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 | #include <stdio.h> |
| 17 | #include <errno.h> |
| 18 | #include <stdlib.h> |
| 19 | #include <sys/socket.h> |
| 20 | #include <sys/select.h> |
| 21 | #include <sys/time.h> |
| 22 | #include <sys/types.h> |
| 23 | #include <sys/un.h> |
| 24 | |
| 25 | #define LOG_TAG "SocketListener" |
| 26 | #include <cutils/log.h> |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 27 | #include <cutils/sockets.h> |
| 28 | |
| 29 | #include <sysutils/SocketListener.h> |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 30 | #include <sysutils/SocketClient.h> |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 31 | |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 32 | #define LOG_NDEBUG 0 |
| 33 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 34 | SocketListener::SocketListener(const char *socketName, bool listen) { |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 35 | init(socketName, -1, listen, false); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 36 | } |
| 37 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 38 | SocketListener::SocketListener(int socketFd, bool listen) { |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 39 | init(NULL, socketFd, listen, false); |
| 40 | } |
| 41 | |
| 42 | SocketListener::SocketListener(const char *socketName, bool listen, bool useCmdNum) { |
| 43 | init(socketName, -1, listen, useCmdNum); |
| 44 | } |
| 45 | |
| 46 | void SocketListener::init(const char *socketName, int socketFd, bool listen, bool useCmdNum) { |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 47 | mListen = listen; |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 48 | mSocketName = socketName; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 49 | mSock = socketFd; |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 50 | mUseCmdNum = useCmdNum; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 51 | pthread_mutex_init(&mClientsLock, NULL); |
| 52 | mClients = new SocketClientCollection(); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 53 | } |
| 54 | |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 55 | SocketListener::~SocketListener() { |
| 56 | if (mSocketName && mSock > -1) |
| 57 | close(mSock); |
| 58 | |
| 59 | if (mCtrlPipe[0] != -1) { |
| 60 | close(mCtrlPipe[0]); |
| 61 | close(mCtrlPipe[1]); |
| 62 | } |
| 63 | SocketClientCollection::iterator it; |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 64 | for (it = mClients->begin(); it != mClients->end();) { |
Brad Fitzpatrick | 13aa8ad | 2011-03-17 15:41:20 -0700 | [diff] [blame] | 65 | (*it)->decRef(); |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 66 | it = mClients->erase(it); |
| 67 | } |
| 68 | delete mClients; |
| 69 | } |
| 70 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 71 | int SocketListener::startListener() { |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 72 | |
| 73 | if (!mSocketName && mSock == -1) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 74 | SLOGE("Failed to start unbound listener"); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 75 | errno = EINVAL; |
| 76 | return -1; |
| 77 | } else if (mSocketName) { |
| 78 | if ((mSock = android_get_control_socket(mSocketName)) < 0) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 79 | SLOGE("Obtaining file descriptor socket '%s' failed: %s", |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 80 | mSocketName, strerror(errno)); |
| 81 | return -1; |
| 82 | } |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 83 | SLOGV("got mSock = %d for %s", mSock, mSocketName); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 84 | } |
| 85 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 86 | if (mListen && listen(mSock, 4) < 0) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 87 | SLOGE("Unable to listen on socket (%s)", strerror(errno)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 88 | return -1; |
San Mehat | df6c1b9 | 2009-05-13 08:58:43 -0700 | [diff] [blame] | 89 | } else if (!mListen) |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 90 | mClients->push_back(new SocketClient(mSock, false, mUseCmdNum)); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 91 | |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 92 | if (pipe(mCtrlPipe)) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 93 | SLOGE("pipe failed (%s)", strerror(errno)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 94 | return -1; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 95 | } |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 96 | |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 97 | if (pthread_create(&mThread, NULL, SocketListener::threadStart, this)) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 98 | SLOGE("pthread_create (%s)", strerror(errno)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 99 | return -1; |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 100 | } |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 101 | |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | int SocketListener::stopListener() { |
| 106 | char c = 0; |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 107 | int rc; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 108 | |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 109 | rc = TEMP_FAILURE_RETRY(write(mCtrlPipe[1], &c, 1)); |
| 110 | if (rc != 1) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 111 | SLOGE("Error writing to control pipe (%s)", strerror(errno)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 112 | return -1; |
| 113 | } |
| 114 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 115 | void *ret; |
| 116 | if (pthread_join(mThread, &ret)) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 117 | SLOGE("Error joining to listener thread (%s)", strerror(errno)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 118 | return -1; |
| 119 | } |
San Mehat | dbdb0db | 2009-05-12 15:50:26 -0700 | [diff] [blame] | 120 | close(mCtrlPipe[0]); |
| 121 | close(mCtrlPipe[1]); |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 122 | mCtrlPipe[0] = -1; |
| 123 | mCtrlPipe[1] = -1; |
| 124 | |
| 125 | if (mSocketName && mSock > -1) { |
| 126 | close(mSock); |
| 127 | mSock = -1; |
| 128 | } |
| 129 | |
| 130 | SocketClientCollection::iterator it; |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 131 | for (it = mClients->begin(); it != mClients->end();) { |
San Mehat | c4a895b | 2009-06-23 21:10:57 -0700 | [diff] [blame] | 132 | delete (*it); |
| 133 | it = mClients->erase(it); |
| 134 | } |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | void *SocketListener::threadStart(void *obj) { |
| 139 | SocketListener *me = reinterpret_cast<SocketListener *>(obj); |
| 140 | |
| 141 | me->runListener(); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 142 | pthread_exit(NULL); |
| 143 | return NULL; |
| 144 | } |
| 145 | |
| 146 | void SocketListener::runListener() { |
| 147 | |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 148 | SocketClientCollection *pendingList = new SocketClientCollection(); |
| 149 | |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 150 | while(1) { |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 151 | SocketClientCollection::iterator it; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 152 | fd_set read_fds; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 153 | int rc = 0; |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 154 | int max = -1; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 155 | |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 156 | FD_ZERO(&read_fds); |
| 157 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 158 | if (mListen) { |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 159 | max = mSock; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 160 | FD_SET(mSock, &read_fds); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 161 | } |
| 162 | |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 163 | FD_SET(mCtrlPipe[0], &read_fds); |
| 164 | if (mCtrlPipe[0] > max) |
| 165 | max = mCtrlPipe[0]; |
| 166 | |
| 167 | pthread_mutex_lock(&mClientsLock); |
| 168 | for (it = mClients->begin(); it != mClients->end(); ++it) { |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 169 | int fd = (*it)->getSocket(); |
| 170 | FD_SET(fd, &read_fds); |
| 171 | if (fd > max) |
| 172 | max = fd; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 173 | } |
| 174 | pthread_mutex_unlock(&mClientsLock); |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 175 | SLOGV("mListen=%d, max=%d, mSocketName=%s", mListen, max, mSocketName); |
San Mehat | df6c1b9 | 2009-05-13 08:58:43 -0700 | [diff] [blame] | 176 | if ((rc = select(max + 1, &read_fds, NULL, NULL, NULL)) < 0) { |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 177 | if (errno == EINTR) |
| 178 | continue; |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 179 | SLOGE("select failed (%s) mListen=%d, max=%d", strerror(errno), mListen, max); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 180 | sleep(1); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 181 | continue; |
San Mehat | df6c1b9 | 2009-05-13 08:58:43 -0700 | [diff] [blame] | 182 | } else if (!rc) |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 183 | continue; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 184 | |
San Mehat | dbdb0db | 2009-05-12 15:50:26 -0700 | [diff] [blame] | 185 | if (FD_ISSET(mCtrlPipe[0], &read_fds)) |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 186 | break; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 187 | if (mListen && FD_ISSET(mSock, &read_fds)) { |
| 188 | struct sockaddr addr; |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 189 | socklen_t alen; |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 190 | int c; |
| 191 | |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 192 | do { |
| 193 | alen = sizeof(addr); |
| 194 | c = accept(mSock, &addr, &alen); |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 195 | SLOGV("%s got %d from accept", mSocketName, c); |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 196 | } while (c < 0 && errno == EINTR); |
| 197 | if (c < 0) { |
San Mehat | 7e8529a | 2010-03-25 09:31:42 -0700 | [diff] [blame] | 198 | SLOGE("accept failed (%s)", strerror(errno)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 199 | sleep(1); |
| 200 | continue; |
| 201 | } |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 202 | pthread_mutex_lock(&mClientsLock); |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 203 | mClients->push_back(new SocketClient(c, true, mUseCmdNum)); |
San Mehat | fa644ff | 2009-05-08 11:15:53 -0700 | [diff] [blame] | 204 | pthread_mutex_unlock(&mClientsLock); |
| 205 | } |
| 206 | |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 207 | /* Add all active clients to the pending list first */ |
| 208 | pendingList->clear(); |
| 209 | pthread_mutex_lock(&mClientsLock); |
| 210 | for (it = mClients->begin(); it != mClients->end(); ++it) { |
| 211 | int fd = (*it)->getSocket(); |
| 212 | if (FD_ISSET(fd, &read_fds)) { |
| 213 | pendingList->push_back(*it); |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 214 | } |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 215 | } |
| 216 | pthread_mutex_unlock(&mClientsLock); |
| 217 | |
| 218 | /* Process the pending list, since it is owned by the thread, |
| 219 | * there is no need to lock it */ |
| 220 | while (!pendingList->empty()) { |
| 221 | /* Pop the first item from the list */ |
| 222 | it = pendingList->begin(); |
| 223 | SocketClient* c = *it; |
| 224 | pendingList->erase(it); |
Vernon Tang | 8795007 | 2011-04-27 14:01:27 +1000 | [diff] [blame] | 225 | /* Process it, if false is returned and our sockets are |
| 226 | * connection-based, remove and destroy it */ |
| 227 | if (!onDataAvailable(c) && mListen) { |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 228 | /* Remove the client from our array */ |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 229 | SLOGV("going to zap %d for %s", c->getSocket(), mSocketName); |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 230 | pthread_mutex_lock(&mClientsLock); |
| 231 | for (it = mClients->begin(); it != mClients->end(); ++it) { |
| 232 | if (*it == c) { |
| 233 | mClients->erase(it); |
| 234 | break; |
| 235 | } |
| 236 | } |
| 237 | pthread_mutex_unlock(&mClientsLock); |
Xianzhu Wang | 4520246 | 2011-09-29 12:59:55 +0800 | [diff] [blame] | 238 | /* Remove our reference to the client */ |
| 239 | c->decRef(); |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 240 | } |
| 241 | } |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 242 | } |
David 'Digit' Turner | 100c0e2 | 2011-01-17 03:10:31 +0100 | [diff] [blame] | 243 | delete pendingList; |
San Mehat | 168415b | 2009-05-06 11:14:21 -0700 | [diff] [blame] | 244 | } |
| 245 | |
San Mehat | db01754 | 2009-05-20 15:27:14 -0700 | [diff] [blame] | 246 | void SocketListener::sendBroadcast(int code, const char *msg, bool addErrno) { |
San Mehat | d768066 | 2009-05-12 11:16:59 -0700 | [diff] [blame] | 247 | pthread_mutex_lock(&mClientsLock); |
| 248 | SocketClientCollection::iterator i; |
| 249 | |
| 250 | for (i = mClients->begin(); i != mClients->end(); ++i) { |
Robert Greenwalt | 8702bb1 | 2012-02-07 12:23:14 -0800 | [diff] [blame] | 251 | // broadcasts are unsolicited and should not include a cmd number |
| 252 | if ((*i)->sendMsg(code, msg, addErrno, false)) { |
Guang Zhu | a8185a6 | 2012-02-07 19:13:28 -0800 | [diff] [blame] | 253 | SLOGW("Error sending broadcast (%s)", strerror(errno)); |
| 254 | } |
| 255 | } |
| 256 | pthread_mutex_unlock(&mClientsLock); |
| 257 | } |