Refactor: replace C-style code with modern C++ idioms

WeChatFerry/spy/funcs.cpp

@@ -8,13 +8,13 @@
 #include "exec_sql.h"
 #include "funcs.h"
 #include "log.hpp"
+#include "receive_msg.h"
 #include "spy_types.h"
 #include "util.h"
 
 using namespace std;
 namespace fs = std::filesystem;
 
-extern bool gIsListeningPyq;
 extern QWORD g_WeChatWinDllAddr;
 
 #define HEADER_PNG1 0x89
@@ -111,7 +111,6 @@ string DecryptImage(string src, string dir)
 
     string dst = "";
 
-    try {
     if (dir.empty()) {
         dst = fs::path(src).replace_extension(ext).string();
     } else {
@@ -130,12 +129,6 @@ string DecryptImage(string src, string dir)
     }
 
     replace(dst.begin(), dst.end(), '\\', '/');
-    } catch (const std::exception &e) {
-        LOG_ERROR(GB2312ToUtf8(e.what()));
-    } catch (...) {
-        LOG_ERROR("Unknow exception.");
-        return "";
-    }
 
     ofstream out(dst.c_str(), ios::binary);
     if (!out.is_open()) {
@@ -178,7 +171,8 @@ static int GetNextPage(QWORD id)
 
 int RefreshPyq(QWORD id)
 {
-    if (!gIsListeningPyq) {
+    auto &msgHandler = MessageHandler::getInstance();
+    if (!msgHandler.isPyqListening()) {
         LOG_ERROR("没有启动朋友圈消息接收，参考：enable_receiving_msg");
         return -1;
     }
@@ -332,7 +326,6 @@ string GetPCMAudio(uint64_t id, string dir, int32_t sr)
     return pcmpath;
 }
 
-
 OcrResult_t GetOcrResult(string path)
 {
     OcrResult_t ret = { -1, "" };