1 /*
2 * Copyright (c) 2023 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 "socket_session.h"
17
18 #include <sstream>
19
20 #include <sys/socket.h>
21 #include <unistd.h>
22
23 #include "proto.h"
24
25 #undef LOG_TAG
26 #define LOG_TAG "SocketSession"
27
28 namespace OHOS {
29 namespace Msdp {
30 namespace DeviceStatus {
31
SocketSession(const std::string & programName,int32_t moduleType,int32_t tokenType,int32_t fd,int32_t uid,int32_t pid)32 SocketSession::SocketSession(const std::string &programName, int32_t moduleType,
33 int32_t tokenType, int32_t fd, int32_t uid, int32_t pid)
34 : fd_(fd), uid_(uid), pid_(pid), tokenType_(tokenType), programName_(programName)
35 {}
36
~SocketSession()37 SocketSession::~SocketSession()
38 {
39 if ((fd_ >= 0) && (::close(fd_) != 0)) {
40 FI_HILOGE("close(%{public}d) failed:%{public}s", fd_, ::strerror(errno));
41 }
42 }
43
SendMsg(NetPacket & pkt) const44 bool SocketSession::SendMsg(NetPacket &pkt) const
45 {
46 if (pkt.ChkRWError()) {
47 FI_HILOGE("Read and write status is error");
48 return false;
49 }
50 StreamBuffer buf;
51 if (!pkt.MakeData(buf)) {
52 FI_HILOGE("Failed to buffer packet");
53 return false;
54 }
55 return SendMsg(buf.Data(), buf.Size());
56 }
57
SendMsg(const char * buf,size_t size) const58 bool SocketSession::SendMsg(const char *buf, size_t size) const
59 {
60 CHKPF(buf);
61 if ((size == 0) || (size > MAX_PACKET_BUF_SIZE)) {
62 FI_HILOGE("buf size:%{public}zu", size);
63 return false;
64 }
65 if (fd_ < 0) {
66 FI_HILOGE("The fd_ is less than 0");
67 return false;
68 }
69
70 int32_t idx = 0;
71 int32_t retryCount = 0;
72 const int32_t bufSize = static_cast<int32_t>(size);
73 int32_t remSize = bufSize;
74 FI_HILOGI("Rem size:%{public}d", remSize);
75 while (remSize > 0 && retryCount < SEND_RETRY_LIMIT) {
76 retryCount += 1;
77 FI_HILOGD("Send message to client (%{public}d, %{public}d)", fd_, pid_);
78 ssize_t count = send(fd_, &buf[idx], remSize, MSG_DONTWAIT | MSG_NOSIGNAL);
79 if (count < 0) {
80 if (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK) {
81 usleep(SEND_RETRY_SLEEP_TIME);
82 FI_HILOGW("Continue for errno EAGAIN|EINTR|EWOULDBLOCK, errno:%{public}d, pid:%{public}d", errno, pid_);
83 continue;
84 }
85 FI_HILOGE("Send return failed, error:%{public}d, fd:%{public}d, pid:%{public}d", errno, fd_, pid_);
86 return false;
87 }
88 idx += count;
89 remSize -= count;
90 if (remSize > 0) {
91 usleep(SEND_RETRY_SLEEP_TIME);
92 }
93 }
94 if (retryCount >= SEND_RETRY_LIMIT || remSize != 0) {
95 FI_HILOGE("Send too many times:%{public}d/%{public}d, size:%{public}d/%{public}d, fd:%{public}d,"
96 "pid:%{public}d", retryCount, SEND_RETRY_LIMIT, idx, bufSize, fd_, pid_);
97 return false;
98 }
99 return true;
100 }
101
ToString() const102 std::string SocketSession::ToString() const
103 {
104 std::ostringstream oss;
105 oss << "fd = " << fd_
106 << ((fd_ < 0) ? ", closed" : ", opened")
107 << ", pid = " << pid_
108 << ", tokenType = " << tokenType_
109 << std::endl;
110 return oss.str();
111 }
112
Dispatch(const struct epoll_event & ev)113 void SocketSession::Dispatch(const struct epoll_event &ev)
114 {
115 if ((ev.events & EPOLLIN) == EPOLLIN) {
116 FI_HILOGD("Data received (%{public}d)", fd_);
117 } else if ((ev.events & (EPOLLHUP | EPOLLERR)) != 0) {
118 FI_HILOGE("Epoll hangup:%{public}s", ::strerror(errno));
119 }
120 }
121 } // namespace DeviceStatus
122 } // namespace Msdp
123 } // namespace OHOS