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 #ifdef IPPOVERUSB_ENABLE
17 #include "print_http_server_manager.h"
18 #include "print_http_request_process.h"
19 #include "print_usb_manager.h"
20 #include "print_log.h"
21 #include "nlohmann/json.hpp"
22 #include "cJSON.h"
23
24 namespace OHOS::Print {
25 using namespace std;
26 using namespace OHOS;
27 using namespace httplib;
28
29 using json = nlohmann::json;
30
PrintHttpServerManager()31 PrintHttpServerManager::PrintHttpServerManager()
32 {}
33
~PrintHttpServerManager()34 PrintHttpServerManager::~PrintHttpServerManager()
35 {
36 }
37
AllocatePort(std::shared_ptr<httplib::Server> svr,int32_t & port)38 bool PrintHttpServerManager::AllocatePort(std::shared_ptr<httplib::Server> svr, int32_t &port)
39 {
40 for (int allocPort = HTTP_MIN_PORT; allocPort <= HTTP_MAX_PORT; allocPort++) {
41 bool isPortUse = false;
42 for (const auto& pair : printHttpPortMap) {
43 if (pair.second == allocPort) {
44 isPortUse = true;
45 break;
46 }
47 }
48 if (isPortUse) {
49 PRINT_HILOGD("port : %{public}d is using", allocPort);
50 continue;
51 }
52 if (svr != nullptr && svr->bind_to_port(LOCAL_HOST, allocPort)) {
53 PRINT_HILOGD("bind to port : %{public}d success", allocPort);
54 port = allocPort;
55 return true;
56 }
57 }
58 return false;
59 }
60
StartServer(std::shared_ptr<httplib::Server> svr,std::shared_ptr<PrintHttpRequestProcess> process)61 void PrintHttpServerManager::StartServer(std::shared_ptr<httplib::Server> svr,
62 std::shared_ptr<PrintHttpRequestProcess> process)
63 {
64 PRINT_HILOGD("startServer");
65 if (svr == nullptr) {
66 PRINT_HILOGE("svr is null");
67 return;
68 }
69 svr->set_payload_max_length(HTTP_SERVER_MAX_LENGTH);
70 PRINT_HILOGD("post /");
71 svr->Post("^/.*", [process](const httplib::Request &req, httplib::Response &res,
72 const httplib::ContentReader &content_reader) {
73 PRINT_HILOGD("listen path: %{public}s", req.path.c_str());
74 if (process != nullptr) {
75 process->ProcessRequest(req, res, content_reader);
76 }
77 });
78
79 PRINT_HILOGD("after post");
80 svr->listen_after_bind();
81 PRINT_HILOGD("after listen");
82 }
83
CreateServer(std::string printerName,int32_t & port)84 bool PrintHttpServerManager::CreateServer(std::string printerName, int32_t &port)
85 {
86 PRINT_HILOGD("PrintHttpServerManager init printerName: %{public}s, port: %{public}d", printerName.c_str(), port);
87 if (printHttpServerMap.find(printerName) != printHttpServerMap.end()) {
88 PRINT_HILOGI("printerName: %{public}s has server", printerName.c_str());
89 if (printHttpPortMap.find(printerName) != printHttpPortMap.end()) {
90 port = printHttpPortMap[printerName];
91 return true;
92 }
93 PRINT_HILOGE("printerName: %{public}s has server, but do not has port", printerName.c_str());
94 return false;
95 }
96
97 std::shared_ptr<httplib::Server> newServer = std::make_shared<httplib::Server>();
98 int32_t allocPort = HTTP_MIN_PORT;
99 if (!AllocatePort(newServer, allocPort)) {
100 PRINT_HILOGE("AllocatePort fail, return!");
101 return false;
102 }
103 port = allocPort;
104 printHttpServerMap[printerName] = newServer;
105 printHttpPortMap[printerName] = port;
106 std::shared_ptr<PrintHttpRequestProcess> newProcess = std::make_shared<PrintHttpRequestProcess>();
107 printHttpProcessMap[printerName] = newProcess;
108 newProcess->SetDeviceName(printerName);
109
110 std::thread tServer = std::thread([this, printerName] {
111 this->StartServer(this->printHttpServerMap[printerName], this->printHttpProcessMap[printerName]);
112 });
113 tServer.detach();
114 return true;
115 }
116
StopServer(std::string printerName)117 void PrintHttpServerManager::StopServer(std::string printerName)
118 {
119 PRINT_HILOGD("stopServer printerName: %{public}s", printerName.c_str());
120 if (printHttpServerMap.find(printerName) != printHttpServerMap.end()) {
121 if (printHttpServerMap[printerName]->is_running()) {
122 printHttpServerMap[printerName]->stop();
123 printHttpServerMap.erase(printerName);
124 }
125 }
126 if (printHttpPortMap.find(printerName) != printHttpPortMap.end()) {
127 printHttpPortMap.erase(printerName);
128 }
129 if (printHttpProcessMap.find(printerName) != printHttpProcessMap.end()) {
130 printHttpProcessMap[printerName]->Stop();
131 printHttpProcessMap.erase(printerName);
132 }
133 }
134
DealUsbDevDetach(const std::string & devStr)135 void PrintHttpServerManager::DealUsbDevDetach(const std::string &devStr)
136 {
137 PRINT_HILOGD("devStr: %{public}s", devStr.c_str());
138 cJSON *devJson = cJSON_Parse(devStr.c_str());
139 if (!devJson) {
140 PRINT_HILOGE("Create devJson error");
141 }
142 cJSON *jsonTemp = cJSON_GetObjectItem(devJson, "name");
143 if (jsonTemp == nullptr || jsonTemp->valuestring == NULL) {
144 PRINT_HILOGE("The devJson does not have a necessary attribute.");
145 cJSON_Delete(devJson);
146 return;
147 }
148 string name = jsonTemp->valuestring;
149 string printerName = DelayedSingleton<PrintUsbManager>::GetInstance()->GetPrinterName(name);
150 PRINT_HILOGD("DealUsbDevDetach name: %{public}s, printerName: %{public}s", name.c_str(), printerName.c_str());
151 if (printerName.empty()) {
152 cJSON_Delete(devJson);
153 return;
154 }
155 StopServer(printerName);
156 cJSON_Delete(devJson);
157 }
158 }
159 #endif // IPPOVERUSB_ENABLE