new feature: evwifi

opencv-motion-detect/CMakeLists.txt

@@ -73,4 +73,7 @@ add_executable(evslicer evslicer.cpp)
 target_link_libraries(evslicer PUBLIC dirmon post ${COMM_LIBS} ${AV_LIBS} curl fswatch  ${EXTRA_LIBS})
 
 add_executable(evmlmotion evmlmotion.cpp)
-target_link_libraries(evmlmotion PUBLIC ${COMM_LIBS} ${AV_LIBS} ${CV_LIBRARIES} ${EXTRA_LIBS})
\ No newline at end of file
+target_link_libraries(evmlmotion PUBLIC ${COMM_LIBS} ${AV_LIBS} ${CV_LIBRARIES} ${EXTRA_LIBS})
+
+add_executable(evwifi evwifi.cpp)
+target_link_libraries(evwifi PUBLIC database leveldb)
\ No newline at end of file

opencv-motion-detect/Makefile

@@ -162,6 +162,19 @@ evmgr/fast:
 	$(MAKE) -f CMakeFiles/evmgr.dir/build.make CMakeFiles/evmgr.dir/build
 .PHONY : evmgr/fast
 
+#=============================================================================
+# Target rules for targets named evwifi
+
+# Build rule for target.
+evwifi: cmake_check_build_system
+	$(MAKE) -f CMakeFiles/Makefile2 evwifi
+.PHONY : evwifi
+
+# fast build rule for target.
+evwifi/fast:
+	$(MAKE) -f CMakeFiles/evwifi.dir/build.make CMakeFiles/evwifi.dir/build
+.PHONY : evwifi/fast
+
 #=============================================================================
 # Target rules for targets named evdaemon
 
@@ -509,6 +522,33 @@ evslicer.cpp.s:
 	$(MAKE) -f CMakeFiles/evslicer.dir/build.make CMakeFiles/evslicer.dir/evslicer.cpp.s
 .PHONY : evslicer.cpp.s
 
+evwifi.o: evwifi.cpp.o
+
+.PHONY : evwifi.o
+
+# target to build an object file
+evwifi.cpp.o:
+	$(MAKE) -f CMakeFiles/evwifi.dir/build.make CMakeFiles/evwifi.dir/evwifi.cpp.o
+.PHONY : evwifi.cpp.o
+
+evwifi.i: evwifi.cpp.i
+
+.PHONY : evwifi.i
+
+# target to preprocess a source file
+evwifi.cpp.i:
+	$(MAKE) -f CMakeFiles/evwifi.dir/build.make CMakeFiles/evwifi.dir/evwifi.cpp.i
+.PHONY : evwifi.cpp.i
+
+evwifi.s: evwifi.cpp.s
+
+.PHONY : evwifi.s
+
+# target to generate assembly for a file
+evwifi.cpp.s:
+	$(MAKE) -f CMakeFiles/evwifi.dir/build.make CMakeFiles/evwifi.dir/evwifi.cpp.s
+.PHONY : evwifi.cpp.s
+
 inc/utils.o: inc/utils.cpp.o
 
 .PHONY : inc/utils.o
@@ -600,6 +640,7 @@ help:
 	@echo "... evslicer"
 	@echo "... evpuller"
 	@echo "... evmgr"
+	@echo "... evwifi"
 	@echo "... evdaemon"
 	@echo "... evcloudsvc"
 	@echo "... rebuild_cache"
@@ -637,6 +678,9 @@ help:
 	@echo "... evslicer.o"
 	@echo "... evslicer.i"
 	@echo "... evslicer.s"
+	@echo "... evwifi.o"
+	@echo "... evwifi.i"
+	@echo "... evwifi.s"
 	@echo "... inc/utils.o"
 	@echo "... inc/utils.i"
 	@echo "... inc/utils.s"

opencv-motion-detect/evdaemon.cpp

@@ -877,8 +877,9 @@ public:
                 info["sn"] = sn;
                 info["lastboot"] =  chrono::duration_cast<chrono::seconds>(chrono::system_clock::now().time_since_epoch()).count();
                 LVDB::setSn(info);
+                ret["data"] = info;
             }
-            res.set_content(this->info.dump(), "text/json");
+            res.set_content(ret.dump(), "text/json");
         });
 
         svr.Get("/config", [this](const Request& req, Response& res) {

opencv-motion-detect/evwifi.cpp

+#include "inc/httplib.h"
+#include "inc/zmqhelper.hpp"
+#include "inc/json.hpp"
+#include "spdlog/spdlog.h"
+#include "fmt/format.h"
+#include "database.h"
+#include <thread>
+#include <future>
+#include <regex>
+#include <cstdio>
+#include <iostream>
+#include <memory>
+#include <stdexcept>
+#include <string>
+#include <array>
+
+std::string exec(const char* cmd) {
+    std::array<char, 128> buffer;
+    std::string result;
+    std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
+    if (!pipe) {
+        throw std::runtime_error("popen() failed!");
+    }
+    while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {
+        result += buffer.data();
+    }
+    return result;
+}
+
+using namespace std;
+using namespace nlohmann;
+using namespace httplib;
+
+
+class WifiMgr {
+    private:
+    json info;
+    Server srv;
+    promise<int> p;
+    thread monitor;
+    vector<string> ssids;
+    string wifiSSID;
+    string wifiPasswd;
+    int mode, lastMode; // 1: ap; 2: ste
+    const string apdCfgPath = "/etc/apd.conf";
+    const string wpaCfgPath = "/etc/wpa_supplicant/wpa_supplicant-wlan1.conf";
+
+    json enableMode(int mode){
+        json ret;
+        ret["code"] = 0;
+        ret["msg"] = "ok";
+
+        if( mode == 1) {
+            // ap
+            // stop all
+            spdlog::info("prepare to enter AP mode");
+            exec("systemctl stop wap_supplicant@wlan1");
+            // exec("systemctl dsiable wap_supplicant@wlan1 ")
+            string apdContent = fmt::format("interface=wlan1\ndriver=nl80211\nssid=EVB-{}\nhw_mode=g\n"
+            "channel=6\nmacaddr_acl=0\nignore_broadcast_ssid=0\nwpa=0\n", this->info["sn"].get<string>());
+            ofstream fileApd(apdCfgPath, ios::out|ios::trunc);
+            if(fileApd.is_open()){
+                fileApd << apdContent;
+                fileApd.close();
+                // start hostapd
+                exec("hostapd /etc/apd.conf -B");
+                // TODO: check result
+
+                /// scan wifis
+                string res = exec("iwlist wlan1 scan|grep ESSID");
+                ssids.clear();
+                httplib::detail::split(&res[0], &res[res.size()], '\n', [&](const char *b, const char *e) {
+                    string ssid;
+                    ssid.assign(b,e);
+                    ssids.push_back(ssid);
+                });
+                //
+            }else{
+                ret["code"] = 1;
+                string msg = fmt::format("failed to write ap config file to {}", apdCfgPath);
+                spdlog::error(msg);
+                ret["msg"] = msg;
+                return ret;
+            }
+
+        }else if(mode == 2) {
+            // station mode
+            spdlog::info("prepare to enter Station mode");
+
+            // stop hostapd
+            exec("pkill hostapd");
+            string wpaContent = fmt::format("ctrl_interface=/run/wpa_supplicant\nupdate_config=1\nap_scan=1\n"
+            "network={{\nssid=\"{}\"\npsk=\"{}\"\n}}\n", this->wifiSSID, this->wifiPasswd);
+
+            ofstream wpaFile(wpaCfgPath, ios::out|ios::trunc);
+            if(wpaFile.is_open()){
+                wpaFile << wpaContent;
+                wpaFile.close();
+                // TODO: verify
+                spdlog::info(exec("systemctl enable wap_supplicant@wlan1"));
+                spdlog::info(exec("systemctl restart wap_supplicant@wlan1"));
+                spdlog::info(exec("dhclient wlan1"));
+            }else{
+                string msg = fmt::format("failed write wpa config to {}", wpaCfgPath);
+                ret["code"] = 2;
+                ret["msg"] = msg;
+                spdlog::error(msg);
+                return ret;
+            }
+
+        }
+
+        return ret;
+    }
+
+    public:
+    WifiMgr(){
+        LVDB::getSn(this->info);
+
+        monitor = thread([this](){
+            // check /etc/systemd/wpa_supplicant@wlan1.service
+            // get wlan1 status
+            // get wlan1 ip
+            // ping outside address
+
+            // default is AP mode
+            this->lastMode = 0;
+            while(1){
+                // check modes
+                this->mode = 1;
+                if(this->lastMode != this->mode) {
+                    enableMode(this->mode);
+                }
+                this->lastMode = this->mode;
+                this_thread::sleep_for(chrono::seconds(10));
+            }
+        });
+
+        monitor.detach();
+
+        srv.Get("/wifi", [this](const Request& req, Response& res) {
+            string mode = req.get_param_value("mode");
+            json ret;
+            ret["code"] = 0;
+            ret["msg"] = "ok";
+            ret["sn"] = this->info["sn"];
+            if(!mode.empty()){
+                try{
+                    auto i = stoi(mode);
+                    ret = this->enableMode(i);
+                }catch(exception &e){
+                    string msg = fmt::format("exception in convert mode {} to int:{}", mode, e.what());
+                    ret["code"] = -1;
+                    ret["msg"] = msg;
+                    spdlog::error(msg);
+                }
+            }
+            
+            res.set_content(ret.dump(), "text/json");
+        });
+
+        srv.listen("0.0.0.0", 80);
+    }
+};
+
+int main(){
+    WifiMgr mgr;
+}
\ No newline at end of file