1 /*
2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "uds_socket.h"
17
18 #include <cinttypes>
19
20 #include "error_multimodal.h"
21 #include "mmi_log.h"
22
23 namespace OHOS {
24 namespace MMI {
25 namespace {
26 constexpr OHOS::HiviewDFX::HiLogLabel LABEL = { LOG_CORE, MMI_LOG_DOMAIN, "UDSSocket" };
27 } // namespace
28
UDSSocket()29 UDSSocket::UDSSocket() {}
30
~UDSSocket()31 UDSSocket::~UDSSocket()
32 {
33 Close();
34 EpollClose();
35 }
36
EpollCreate(int32_t size)37 int32_t UDSSocket::EpollCreate(int32_t size)
38 {
39 epollFd_ = epoll_create(size);
40 if (epollFd_ < 0) {
41 MMI_HILOGE("epoll_create return %{public}d", epollFd_);
42 } else {
43 MMI_HILOGI("epoll_create, epollFd_:%{public}d", epollFd_);
44 }
45 return epollFd_;
46 }
47
EpollCtl(int32_t fd,int32_t op,struct epoll_event & event,int32_t epollFd)48 int32_t UDSSocket::EpollCtl(int32_t fd, int32_t op, struct epoll_event &event, int32_t epollFd)
49 {
50 if (fd < 0) {
51 MMI_HILOGE("Invalid fd");
52 return RET_ERR;
53 }
54 if (epollFd < 0) {
55 epollFd = epollFd_;
56 }
57 if (epollFd < 0) {
58 MMI_HILOGE("Invalid param epollFd");
59 return RET_ERR;
60 }
61 int32_t ret;
62 if (op == EPOLL_CTL_DEL) {
63 ret = epoll_ctl(epollFd, op, fd, nullptr);
64 } else {
65 ret = epoll_ctl(epollFd, op, fd, &event);
66 }
67 if (ret < 0) {
68 MMI_HILOGE("epoll_ctl return %{public}d,epollFd_:%{public}d,"
69 "op:%{public}d,fd:%{public}d,errno:%{public}d",
70 ret, epollFd, op, fd, errno);
71 }
72 return ret;
73 }
74
EpollWait(struct epoll_event & events,int32_t maxevents,int32_t timeout,int32_t epollFd)75 int32_t UDSSocket::EpollWait(struct epoll_event &events, int32_t maxevents, int32_t timeout, int32_t epollFd)
76 {
77 if (epollFd < 0) {
78 epollFd = epollFd_;
79 }
80 if (epollFd < 0) {
81 MMI_HILOGE("Invalid param epollFd");
82 return RET_ERR;
83 }
84 auto ret = epoll_wait(epollFd, &events, maxevents, timeout);
85 if (ret < 0) {
86 MMI_HILOGE("epoll_wait ret:%{public}d,errno:%{public}d", ret, errno);
87 }
88 return ret;
89 }
90
OnReadPackets(CircleStreamBuffer & circBuf,UDSSocket::PacketCallBackFun callbackFun)91 void UDSSocket::OnReadPackets(CircleStreamBuffer &circBuf, UDSSocket::PacketCallBackFun callbackFun)
92 {
93 constexpr int32_t headSize = static_cast<int32_t>(sizeof(PackHead));
94 for (int32_t i = 0; i < ONCE_PROCESS_NETPACKET_LIMIT; i++) {
95 const int32_t unreadSize = circBuf.UnreadSize();
96 if (unreadSize < headSize) {
97 break;
98 }
99 int32_t dataSize = unreadSize - headSize;
100 char *buf = const_cast<char *>(circBuf.ReadBuf());
101 CHKPB(buf);
102 PackHead *head = reinterpret_cast<PackHead *>(buf);
103 CHKPB(head);
104 if (head->size < 0 || head->size > MAX_PACKET_BUF_SIZE) {
105 MMI_HILOGF("Packet header parsing error, and this error cannot be recovered. The buffer will be reset."
106 " head->size:%{public}d, unreadSize:%{public}d", head->size, unreadSize);
107 circBuf.Reset();
108 break;
109 }
110 if (head->size > dataSize) {
111 break;
112 }
113 NetPacket pkt(head->idMsg);
114 if ((head->size > 0) && (!pkt.Write(&buf[headSize], head->size))) {
115 MMI_HILOGW("Error writing data in the NetPacket. It will be retried next time. messageid:%{public}d,"
116 "size:%{public}d", head->idMsg, head->size);
117 break;
118 }
119 if (!circBuf.SeekReadPos(pkt.GetPacketLength())) {
120 MMI_HILOGW("Set read position error, and this error cannot be recovered, and the buffer will be reset."
121 " packetSize:%{public}d unreadSize:%{public}d", pkt.GetPacketLength(), unreadSize);
122 circBuf.Reset();
123 break;
124 }
125 callbackFun(pkt);
126 if (circBuf.IsEmpty()) {
127 circBuf.Reset();
128 break;
129 }
130 }
131 }
132
EpollClose()133 void UDSSocket::EpollClose()
134 {
135 if (epollFd_ >= 0) {
136 close(epollFd_);
137 epollFd_ = -1;
138 }
139 }
140
Close()141 void UDSSocket::Close()
142 {
143 if (fd_ >= 0) {
144 auto rf = close(fd_);
145 if (rf > 0) {
146 MMI_HILOGE("Socket close failed rf:%{public}d", rf);
147 }
148 }
149 fd_ = -1;
150 }
151 } // namespace MMI
152 } // namespace OHOS