437 lines
18 KiB
C++
437 lines
18 KiB
C++
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/* 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),
|
||
|
|
mIpcRecver(move(ipcRecver)) {}
|
||
|
|
inline bool run() override {
|
||
|
|
if (mIpcRecver != nullptr) {
|
||
|
|
mLocIpc.startBlockingListening(*(mIpcRecver.get()));
|
||
|
|
if (!mAbortCalled) {
|
||
|
|
LOC_LOGw("startListeningBlocking() returned w/o stopBlockingListening() called");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// return false so the calling thread exits while loop
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
inline void abort() {
|
||
|
|
mAbortCalled = true;
|
||
|
|
if (mIpcRecver != nullptr) {
|
||
|
|
mIpcRecver->abort();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
bool LocIpc::startNonBlockingListening(unique_ptr<LocIpcRecver>& ipcRecver) {
|
||
|
|
if (ipcRecver != nullptr && ipcRecver->isRecvable()) {
|
||
|
|
std::string threadName("LocIpc-");
|
||
|
|
threadName.append(ipcRecver->getName());
|
||
|
|
mRunnable = new LocIpcRunnable(*this, ipcRecver);
|
||
|
|
return mThread.start(threadName.c_str(), mRunnable);
|
||
|
|
} else {
|
||
|
|
LOC_LOGe("ipcRecver is null OR ipcRecver->recvable() is fasle");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool LocIpc::startBlockingListening(LocIpcRecver& ipcRecver) {
|
||
|
|
if (ipcRecver.isRecvable()) {
|
||
|
|
// inform that the socket is ready to receive message
|
||
|
|
ipcRecver.onListenerReady();
|
||
|
|
while (ipcRecver.recvData());
|
||
|
|
return true;
|
||
|
|
} else {
|
||
|
|
LOC_LOGe("ipcRecver is null OR ipcRecver->recvable() is fasle");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void LocIpc::stopNonBlockingListening() {
|
||
|
|
if (mRunnable) {
|
||
|
|
mRunnable->abort();
|
||
|
|
mRunnable = nullptr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void LocIpc::stopBlockingListening(LocIpcRecver& ipcRecver) {
|
||
|
|
if (ipcRecver.isRecvable()) {
|
||
|
|
ipcRecver.abort();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool LocIpc::send(LocIpcSender& sender, const uint8_t data[], uint32_t length, int32_t msgId) {
|
||
|
|
return sender.sendData(data, length, msgId);
|
||
|
|
}
|
||
|
|
|
||
|
|
shared_ptr<LocIpcSender> LocIpc::getLocIpcLocalSender(const char* localSockName) {
|
||
|
|
return make_shared<LocIpcLocalSender>(localSockName);
|
||
|
|
}
|
||
|
|
unique_ptr<LocIpcRecver> LocIpc::getLocIpcLocalRecver(const shared_ptr<ILocIpcListener>& listener,
|
||
|
|
const char* localSockName) {
|
||
|
|
return make_unique<LocIpcLocalRecver>(listener, localSockName);
|
||
|
|
}
|
||
|
|
static void* sLibQrtrHandle = nullptr;
|
||
|
|
static const char* sLibQrtrName = "libloc_socket.so";
|
||
|
|
shared_ptr<LocIpcSender> LocIpc::getLocIpcQrtrSender(int service, int instance) {
|
||
|
|
typedef shared_ptr<LocIpcSender> (*creator_t) (int, int);
|
||
|
|
static creator_t creator = (creator_t)dlGetSymFromLib(sLibQrtrHandle, sLibQrtrName,
|
||
|
|
"_ZN8loc_util22createLocIpcQrtrSenderEii");
|
||
|
|
return (nullptr == creator) ? nullptr : creator(service, instance);
|
||
|
|
}
|
||
|
|
unique_ptr<LocIpcRecver> LocIpc::getLocIpcQrtrRecver(const shared_ptr<ILocIpcListener>& listener,
|
||
|
|
int service, int instance) {
|
||
|
|
typedef unique_ptr<LocIpcRecver> (*creator_t)(const shared_ptr<ILocIpcListener>&, int, int);
|
||
|
|
static creator_t creator = (creator_t)dlGetSymFromLib(sLibQrtrHandle, sLibQrtrName,
|
||
|
|
#ifdef USE_GLIB
|
||
|
|
"_ZN8loc_util22createLocIpcQrtrRecverERKSt10shared_ptrINS_15ILocIpcListenerEEii");
|
||
|
|
#else
|
||
|
|
"_ZN8loc_util22createLocIpcQrtrRecverERKNSt3__110shared_ptrINS_15ILocIpcListenerEEEii");
|
||
|
|
#endif
|
||
|
|
return (nullptr == creator) ? nullptr : creator(listener, service, instance);
|
||
|
|
}
|
||
|
|
shared_ptr<LocIpcSender> LocIpc::getLocIpcInetTcpSender(const char* serverName, int32_t port) {
|
||
|
|
return make_shared<LocIpcInetTcpSender>(serverName, port);
|
||
|
|
}
|
||
|
|
unique_ptr<LocIpcRecver> LocIpc::getLocIpcInetTcpRecver(const shared_ptr<ILocIpcListener>& listener,
|
||
|
|
const char* serverName, int32_t port) {
|
||
|
|
return make_unique<LocIpcInetTcpRecver>(listener, serverName, port);
|
||
|
|
}
|
||
|
|
shared_ptr<LocIpcSender> LocIpc::getLocIpcInetUdpSender(const char* serverName, int32_t port) {
|
||
|
|
return make_shared<LocIpcInetSender>(serverName, port, SOCK_DGRAM);
|
||
|
|
}
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|