5f21e4fdef
To abort inet receiver thread, an abort message must be sent explictly to loopback address. For reciever to receive abort message it must be open to receive messages on INADDR_ANY and not just specific IP address. CRs-Fixed: 2462833 Change-Id: I9ab3266d582bc774655fcabfc086dab33010f7d8
436 lines
18 KiB
C++
436 lines
18 KiB
C++
/* Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation, nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <loc_misc_utils.h>
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#include <log_util.h>
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#include <LocIpc.h>
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#include <algorithm>
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using namespace std;
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namespace loc_util {
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#ifdef LOG_TAG
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#undef LOG_TAG
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#endif
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#define LOG_TAG "LocSvc_LocIpc"
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#define SOCK_OP_AND_LOG(buf, length, opable, rtv, exe) \
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if (nullptr == (buf) || 0 == (length)) { \
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LOC_LOGe("Invalid inputs: buf - %p, length - %u", (buf), (length)); \
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} else if (!(opable)) { \
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LOC_LOGe("Invalid object: operable - %d", (opable)); \
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} else { \
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rtv = (exe); \
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if (-1 == rtv) { \
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LOC_LOGw("failed reason: %s", strerror(errno)); \
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} \
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}
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const char Sock::MSG_ABORT[] = "LocIpc::Sock::ABORT";
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const char Sock::LOC_IPC_HEAD[] = "$MSGLEN$";
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ssize_t Sock::send(const void *buf, uint32_t len, int flags, const struct sockaddr *destAddr,
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socklen_t addrlen) const {
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ssize_t rtv = -1;
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SOCK_OP_AND_LOG(buf, len, isValid(), rtv, sendto(buf, len, flags, destAddr, addrlen));
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return rtv;
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}
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ssize_t Sock::recv(const shared_ptr<ILocIpcListener>& dataCb, int flags, struct sockaddr *srcAddr,
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socklen_t *addrlen, int sid) const {
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ssize_t rtv = -1;
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if (-1 == sid) {
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sid = mSid;
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} // else it sid would be connection based socket id for recv
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SOCK_OP_AND_LOG(dataCb.get(), mMaxTxSize, isValid(), rtv,
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recvfrom(dataCb, sid, flags, srcAddr, addrlen));
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return rtv;
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}
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ssize_t Sock::sendto(const void *buf, size_t len, int flags, const struct sockaddr *destAddr,
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socklen_t addrlen) const {
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ssize_t rtv = -1;
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if (len <= mMaxTxSize) {
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rtv = ::sendto(mSid, buf, len, flags, destAddr, addrlen);
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} else {
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std::string head(LOC_IPC_HEAD + to_string(len));
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rtv = ::sendto(mSid, head.c_str(), head.length(), flags, destAddr, addrlen);
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if (rtv > 0) {
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for (size_t offset = 0; offset < len && rtv > 0; offset += rtv) {
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rtv = ::sendto(mSid, (char*)buf + offset, min(len - offset, (size_t)mMaxTxSize),
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flags, destAddr, addrlen);
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}
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rtv = (rtv > 0) ? (head.length() + len) : -1;
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}
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}
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return rtv;
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}
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ssize_t Sock::recvfrom(const shared_ptr<ILocIpcListener>& dataCb, int sid, int flags,
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struct sockaddr *srcAddr, socklen_t *addrlen) const {
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ssize_t nBytes = -1;
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std::string msg(mMaxTxSize, 0);
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if ((nBytes = ::recvfrom(sid, (void*)msg.data(), msg.size(), flags, srcAddr, addrlen)) > 0) {
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if (strncmp(msg.data(), MSG_ABORT, sizeof(MSG_ABORT)) == 0) {
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LOC_LOGi("recvd abort msg.data %s", msg.data());
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nBytes = 0;
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} else if (strncmp(msg.data(), LOC_IPC_HEAD, sizeof(LOC_IPC_HEAD) - 1)) {
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// short message
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msg.resize(nBytes);
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dataCb->onReceive(msg.data(), nBytes);
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} else {
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// long message
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size_t msgLen = 0;
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sscanf(msg.data() + sizeof(LOC_IPC_HEAD) - 1, "%zu", &msgLen);
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msg.resize(msgLen);
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for (size_t msgLenReceived = 0; (msgLenReceived < msgLen) && (nBytes > 0);
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msgLenReceived += nBytes) {
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nBytes = ::recvfrom(sid, &(msg[msgLenReceived]), msg.size() - msgLenReceived,
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flags, srcAddr, addrlen);
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}
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if (nBytes > 0) {
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nBytes = msgLen;
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dataCb->onReceive(msg.data(), nBytes);
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}
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}
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}
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return nBytes;
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}
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ssize_t Sock::sendAbort(int flags, const struct sockaddr *destAddr, socklen_t addrlen) {
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return send(MSG_ABORT, sizeof(MSG_ABORT), flags, destAddr, addrlen);
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}
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class LocIpcLocalSender : public LocIpcSender {
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protected:
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shared_ptr<Sock> mSock;
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struct sockaddr_un mAddr;
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inline virtual bool isOperable() const override { return mSock != nullptr && mSock->isValid(); }
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inline virtual ssize_t send(const uint8_t data[], uint32_t length, int32_t /* msgId */) const {
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return mSock->send(data, length, 0, (struct sockaddr*)&mAddr, sizeof(mAddr));
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}
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public:
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inline LocIpcLocalSender(const char* name) : LocIpcSender(),
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mSock(make_shared<Sock>((nullptr == name) ? -1 : (::socket(AF_UNIX, SOCK_DGRAM, 0)))),
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mAddr({.sun_family = AF_UNIX, {}}) {
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if (mSock != nullptr && mSock->isValid()) {
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snprintf(mAddr.sun_path, sizeof(mAddr.sun_path), "%s", name);
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}
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}
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};
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class LocIpcLocalRecver : public LocIpcLocalSender, public LocIpcRecver {
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protected:
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inline virtual ssize_t recv() const override {
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socklen_t size = sizeof(mAddr);
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return mSock->recv(mDataCb, 0, (struct sockaddr*)&mAddr, &size);
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}
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public:
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inline LocIpcLocalRecver(const shared_ptr<ILocIpcListener>& listener, const char* name) :
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LocIpcLocalSender(name), LocIpcRecver(listener, *this) {
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if ((unlink(mAddr.sun_path) < 0) && (errno != ENOENT)) {
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LOC_LOGw("unlink socket error. reason:%s", strerror(errno));
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}
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umask(0157);
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if (mSock->isValid() && ::bind(mSock->mSid, (struct sockaddr*)&mAddr, sizeof(mAddr)) < 0) {
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LOC_LOGe("bind socket error. sock fd: %d: %s, reason: %s", mSock->mSid,
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mAddr.sun_path, strerror(errno));
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mSock->close();
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}
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}
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inline virtual ~LocIpcLocalRecver() { unlink(mAddr.sun_path); }
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inline virtual const char* getName() const override { return mAddr.sun_path; };
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inline virtual void abort() const override {
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if (isSendable()) {
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mSock->sendAbort(0, (struct sockaddr*)&mAddr, sizeof(mAddr));
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}
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}
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};
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class LocIpcInetSender : public LocIpcSender {
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protected:
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int mSockType;
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shared_ptr<Sock> mSock;
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const string mName;
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sockaddr_in mAddr;
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inline virtual bool isOperable() const override { return mSock != nullptr && mSock->isValid(); }
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virtual ssize_t send(const uint8_t data[], uint32_t length, int32_t /* msgId */) const {
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return mSock->send(data, length, 0, (struct sockaddr*)&mAddr, sizeof(mAddr));
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}
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public:
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inline LocIpcInetSender(const char* name, int32_t port, int sockType) : LocIpcSender(),
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mSockType(sockType),
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mSock(make_shared<Sock>((nullptr == name) ? -1 : (::socket(AF_INET, mSockType, 0)))),
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mName((nullptr == name) ? "" : name),
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mAddr({.sin_family = AF_INET, .sin_port = htons(port),
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.sin_addr = {htonl(INADDR_ANY)}}) {
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if (mSock != nullptr && mSock->isValid() && nullptr != name) {
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struct hostent* hp = gethostbyname(name);
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if (nullptr != hp) {
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memcpy((char*)&(mAddr.sin_addr.s_addr), hp->h_addr_list[0], hp->h_length);
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}
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}
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}
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};
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class LocIpcInetTcpSender : public LocIpcInetSender {
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protected:
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mutable bool mFirstTime;
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virtual ssize_t send(const uint8_t data[], uint32_t length, int32_t /* msgId */) const {
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if (mFirstTime) {
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mFirstTime = false;
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::connect(mSock->mSid, (const struct sockaddr*)&mAddr, sizeof(mAddr));
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}
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return mSock->send(data, length, 0, (struct sockaddr*)&mAddr, sizeof(mAddr));
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}
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public:
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inline LocIpcInetTcpSender(const char* name, int32_t port) :
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LocIpcInetSender(name, port, SOCK_STREAM),
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mFirstTime(true) {}
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};
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class LocIpcInetRecver : public LocIpcInetSender, public LocIpcRecver {
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int32_t mPort;
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protected:
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virtual ssize_t recv() const = 0;
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public:
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inline LocIpcInetRecver(const shared_ptr<ILocIpcListener>& listener, const char* name,
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int32_t port, int sockType) :
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LocIpcInetSender(name, port, sockType), LocIpcRecver(listener, *this),
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mPort(port) {
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if (mSock->isValid() && ::bind(mSock->mSid, (struct sockaddr*)&mAddr, sizeof(mAddr)) < 0) {
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LOC_LOGe("bind socket error. sock fd: %d, reason: %s", mSock->mSid, strerror(errno));
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mSock->close();
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}
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}
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inline virtual ~LocIpcInetRecver() {}
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inline virtual const char* getName() const override { return mName.data(); };
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inline virtual void abort() const override {
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if (isSendable()) {
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sockaddr_in loopBackAddr = {.sin_family = AF_INET, .sin_port = htons(mPort),
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.sin_addr = {htonl(INADDR_LOOPBACK)}};
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mSock->sendAbort(0, (struct sockaddr*)&loopBackAddr, sizeof(loopBackAddr));
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}
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}
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};
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class LocIpcInetTcpRecver : public LocIpcInetRecver {
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mutable int32_t mConnFd;
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protected:
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inline virtual ssize_t recv() const override {
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socklen_t size = sizeof(mAddr);
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if (-1 == mConnFd && mSock->isValid()) {
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if (::listen(mSock->mSid, 3) < 0 ||
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(mConnFd = accept(mSock->mSid, (struct sockaddr*)&mAddr, &size)) < 0) {
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mSock->close();
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mConnFd = -1;
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}
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}
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return mSock->recv(mDataCb, 0, (struct sockaddr*)&mAddr, &size, mConnFd);
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}
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public:
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inline LocIpcInetTcpRecver(const shared_ptr<ILocIpcListener>& listener, const char* name,
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int32_t port) :
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LocIpcInetRecver(listener, name, port, SOCK_STREAM), mConnFd(-1) {}
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inline virtual ~LocIpcInetTcpRecver() { if (-1 != mConnFd) ::close(mConnFd);}
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};
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class LocIpcInetUdpRecver : public LocIpcInetRecver {
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protected:
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inline virtual ssize_t recv() const override {
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socklen_t size = sizeof(mAddr);
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return mSock->recv(mDataCb, 0, (struct sockaddr*)&mAddr, &size);
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}
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public:
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inline LocIpcInetUdpRecver(const shared_ptr<ILocIpcListener>& listener, const char* name,
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int32_t port) :
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LocIpcInetRecver(listener, name, port, SOCK_DGRAM) {}
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inline virtual ~LocIpcInetUdpRecver() {}
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};
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#ifdef NOT_DEFINED
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class LocIpcQcsiSender : public LocIpcSender {
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protected:
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inline virtual bool isOperable() const override {
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return mService != nullptr && mService->isServiceRegistered();
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}
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inline virtual ssize_t send(const uint8_t data[], uint32_t length, int32_t msgId) const override {
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return mService->sendIndToClient(msgId, data, length);
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}
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inline LocIpcQcsiSender(shared_ptr<QcsiService>& service) : mService(service) {}
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public:
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inline virtual ~LocIpcQcsi() {}
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};
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class LocIpcQcsiRecver : public LocIpcQcsiSender, public LocIpcRecver {
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protected:
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inline virtual ssize_t recv() const override { return mService->recv(); }
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public:
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inline LocIpcQcsiRecver(unique_ptr<QcsiService>& service) :
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LocIpcQcsiSender(service), LocIpcRecver(mService->getDataCallback(), *this) {
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}
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// only the dele
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inline ~LocIpcQcsiRecver() {}
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inline virtual const char* getName() const override { return mService->getName().data(); };
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inline virtual void abort() const override { if (isSendable()) mService->abort(); }
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shared_ptr<LocIpcQcsiSender> getSender() { return make_pare<LocIpcQcsiSender>(mService); }
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};
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#endif
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class LocIpcRunnable : public LocRunnable {
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bool mAbortCalled;
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LocIpc& mLocIpc;
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unique_ptr<LocIpcRecver> mIpcRecver;
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public:
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inline LocIpcRunnable(LocIpc& locIpc, unique_ptr<LocIpcRecver>& ipcRecver) :
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mAbortCalled(false),
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mLocIpc(locIpc),
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mIpcRecver(move(ipcRecver)) {}
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inline bool run() override {
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if (mIpcRecver != nullptr) {
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mLocIpc.startBlockingListening(*(mIpcRecver.get()));
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if (!mAbortCalled) {
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LOC_LOGw("startListeningBlocking() returned w/o stopBlockingListening() called");
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}
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}
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// return false so the calling thread exits while loop
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return false;
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}
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inline void abort() {
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mAbortCalled = true;
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if (mIpcRecver != nullptr) {
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mIpcRecver->abort();
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}
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}
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};
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bool LocIpc::startNonBlockingListening(unique_ptr<LocIpcRecver>& ipcRecver) {
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if (ipcRecver != nullptr && ipcRecver->isRecvable()) {
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std::string threadName("LocIpc-");
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threadName.append(ipcRecver->getName());
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mRunnable = new LocIpcRunnable(*this, ipcRecver);
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return mThread.start(threadName.c_str(), mRunnable);
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} else {
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LOC_LOGe("ipcRecver is null OR ipcRecver->recvable() is fasle");
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return false;
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}
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}
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bool LocIpc::startBlockingListening(LocIpcRecver& ipcRecver) {
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if (ipcRecver.isRecvable()) {
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// inform that the socket is ready to receive message
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ipcRecver.onListenerReady();
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while (ipcRecver.recvData());
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return true;
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} else {
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LOC_LOGe("ipcRecver is null OR ipcRecver->recvable() is fasle");
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return false;
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}
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}
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void LocIpc::stopNonBlockingListening() {
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if (mRunnable) {
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mRunnable->abort();
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mRunnable = nullptr;
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}
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}
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void LocIpc::stopBlockingListening(LocIpcRecver& ipcRecver) {
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if (ipcRecver.isRecvable()) {
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ipcRecver.abort();
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}
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}
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bool LocIpc::send(LocIpcSender& sender, const uint8_t data[], uint32_t length, int32_t msgId) {
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return sender.sendData(data, length, msgId);
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}
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shared_ptr<LocIpcSender> LocIpc::getLocIpcLocalSender(const char* localSockName) {
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return make_shared<LocIpcLocalSender>(localSockName);
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}
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unique_ptr<LocIpcRecver> LocIpc::getLocIpcLocalRecver(const shared_ptr<ILocIpcListener>& listener,
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const char* localSockName) {
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return make_unique<LocIpcLocalRecver>(listener, localSockName);
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}
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static void* sLibQrtrHandle = nullptr;
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static const char* sLibQrtrName = "libloc_socket.so";
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shared_ptr<LocIpcSender> LocIpc::getLocIpcQrtrSender(int service, int instance) {
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typedef shared_ptr<LocIpcSender> (*creator_t) (int, int);
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static creator_t creator = (creator_t)dlGetSymFromLib(sLibQrtrHandle, sLibQrtrName,
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"_ZN8loc_util22createLocIpcQrtrSenderEii");
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return (nullptr == creator) ? nullptr : creator(service, instance);
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}
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unique_ptr<LocIpcRecver> LocIpc::getLocIpcQrtrRecver(const shared_ptr<ILocIpcListener>& listener,
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int service, int instance) {
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typedef unique_ptr<LocIpcRecver> (*creator_t)(const shared_ptr<ILocIpcListener>&, int, int);
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static creator_t creator = (creator_t)dlGetSymFromLib(sLibQrtrHandle, sLibQrtrName,
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#ifdef USE_GLIB
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"_ZN8loc_util22createLocIpcQrtrRecverERKSt10shared_ptrINS_15ILocIpcListenerEEii");
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#else
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"_ZN8loc_util22createLocIpcQrtrRecverERKNSt3__110shared_ptrINS_15ILocIpcListenerEEEii");
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#endif
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return (nullptr == creator) ? nullptr : creator(listener, service, instance);
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}
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shared_ptr<LocIpcSender> LocIpc::getLocIpcInetTcpSender(const char* serverName, int32_t port) {
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return make_shared<LocIpcInetTcpSender>(serverName, port);
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}
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unique_ptr<LocIpcRecver> LocIpc::getLocIpcInetTcpRecver(const shared_ptr<ILocIpcListener>& listener,
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const char* serverName, int32_t port) {
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return make_unique<LocIpcInetTcpRecver>(listener, serverName, port);
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}
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shared_ptr<LocIpcSender> LocIpc::getLocIpcInetUdpSender(const char* serverName, int32_t port) {
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|
return make_shared<LocIpcInetSender>(serverName, port, SOCK_DGRAM);
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|
}
|
|
unique_ptr<LocIpcRecver> LocIpc::getLocIpcInetUdpRecver(const shared_ptr<ILocIpcListener>& listener,
|
|
const char* serverName, int32_t port) {
|
|
return make_unique<LocIpcInetUdpRecver>(listener, serverName, port);
|
|
}
|
|
pair<shared_ptr<LocIpcSender>, unique_ptr<LocIpcRecver>>
|
|
LocIpc::getLocIpcQmiLocServiceSenderRecverPair(const shared_ptr<ILocIpcListener>& listener, int instance) {
|
|
typedef pair<shared_ptr<LocIpcSender>, unique_ptr<LocIpcRecver>> (*creator_t)(const shared_ptr<ILocIpcListener>&, int);
|
|
static void* sLibEmuHandle = nullptr;
|
|
static creator_t creator = (creator_t)dlGetSymFromLib(sLibEmuHandle, "libloc_emu.so",
|
|
"_ZN13QmiLocService41createLocIpcQmiLocServiceSenderRecverPairERKNSt3__110shared_ptrIN8loc_util15ILocIpcListenerEEEi");
|
|
return (nullptr == creator) ?
|
|
make_pair<shared_ptr<LocIpcSender>, unique_ptr<LocIpcRecver>>(nullptr, nullptr) :
|
|
creator(listener, instance);
|
|
}
|
|
|
|
}
|