parse the crash printer path from config file

CHANGELOG.md

@@ -1,3 +1,8 @@
+* added a very basic crashes logger/printer, enabled by creating a file called `crash_printer_location.txt` inside the `steam_settings` folder,  
+  check README.realease.md for more details  
+
+---
+
 ## 2024/1/5
 
 * **[Detanup01]** Fixed parsing of old Steam interfaces, reported by **[LuKeStorm]**: https://cs.rin.ru/forum/viewtopic.php?p=2971639#p2971639  

dll/dll/common_includes.h

@@ -98,6 +98,8 @@
         #include "detours/detours.h"
     #endif
 
+    #include "crash_printer/win.hpp"
+
 // Convert a wide Unicode string to an UTF8 string
 static inline std::string utf8_encode(const std::wstring &wstr)
 {
@@ -149,6 +151,8 @@ static inline void reset_LastError()
     #include <dlfcn.h>
     #include <utime.h>
 
+    #include "crash_printer/linux.hpp"
+
     #define PATH_MAX_STRING_SIZE 512
     #define PATH_SEPARATOR "/" 
     #define utf8_decode(a) a
@@ -236,6 +240,17 @@ static std::string uint8_vector_to_hex_string(std::vector<uint8_t>& v)
     return result;
 }
 
+static inline void consume_bom(std::ifstream &input)
+{
+    int bom[3];
+    bom[0] = input.get();
+    bom[1] = input.get();
+    bom[2] = input.get();
+    if (bom[0] != 0xEF || bom[1] != 0xBB || bom[2] != 0xBF) {
+        input.seekg(-3, std::ios::cur);
+    }
+}
+
 // Emulator includes
 // add them here after the inline functions definitions
 #include "net.pb.h"
@@ -261,4 +276,6 @@ static std::string uint8_vector_to_hex_string(std::vector<uint8_t>& v)
 
 #define LOBBY_CONNECT_APPID ((uint32)-2)
 
+constexpr const char * const whitespaces = " \t\r\n";
+
 #endif//__INCLUDED_COMMON_INCLUDES__

dll/settings_parser.cpp

@@ -17,17 +17,6 @@
 
 #include "dll/settings_parser.h"
 
-static void consume_bom(std::ifstream &input)
-{
-    int bom[3];
-    bom[0] = input.get();
-    bom[1] = input.get();
-    bom[2] = input.get();
-    if (bom[0] != 0xEF || bom[1] != 0xBB || bom[2] != 0xBF) {
-        input.seekg(0);
-    }
-}
-
 static void load_custom_broadcasts(std::string broadcasts_filepath, std::set<IP_PORT> &custom_broadcasts)
 {
     PRINT_DEBUG("Broadcasts file path: %s\n", broadcasts_filepath.c_str());
@@ -773,7 +762,6 @@ static void parse_force_branch_name(class Settings *settings_client, Settings *s
         std::string line;
         getline( input, line );
         
-        constexpr const char * const whitespaces = " \t\r\n";
         size_t start = line.find_first_not_of(whitespaces);
         size_t end = line.find_last_not_of(whitespaces);
         line = start == end
@@ -953,6 +941,33 @@ static void parse_build_id(int &build_id, std::string &steam_settings_path)
     }
 }
 
+// crash_printer_location.txt
+static void parse_crash_printer_location()
+{
+    std::string installed_apps_list_path = Local_Storage::get_game_settings_path() + "crash_printer_location.txt";
+    std::ifstream input( utf8_decode(installed_apps_list_path) );
+    if (input.is_open()) {
+        consume_bom(input);
+        std::string line;
+        std::getline( input, line );
+        
+        size_t start = line.find_first_not_of(whitespaces);
+        size_t end = line.find_last_not_of(whitespaces);
+        line = start == end
+            ? std::string()
+            : line.substr(start, end - start + 1);
+        
+        if (!line.empty()) {
+            auto crash_path = utf8_decode(get_full_program_path() + line);
+            if (crash_printer::init(crash_path)) {
+                PRINT_DEBUG("Unhandled crashes will be saved to '%s'\n", line.c_str());
+            } else {
+                PRINT_DEBUG("Failed to setup unhandled crash printer with path: '%s'\n", line.c_str());
+            }
+        }
+    }
+}
+
 uint32 create_localstorage_settings(Settings **settings_client_out, Settings **settings_server_out, Local_Storage **local_storage_out)
 {
     std::string program_path = Local_Storage::get_program_path();
@@ -960,6 +975,8 @@ uint32 create_localstorage_settings(Settings **settings_client_out, Settings **s
 
     PRINT_DEBUG("Current Path %s save_path: %s\n", program_path.c_str(), save_path.c_str());
 
+    parse_crash_printer_location();
+
     uint32 appid = parse_steam_app_id(program_path);
 
     bool local_save = parse_local_save(program_path, save_path);

post_build/README.release.md

@@ -364,6 +364,20 @@ Check the relevant files `is_beta_branch.txt` and `force_branch_name.txt` in the
 
 ---
 
+## Crash log/printer:
+
+The emu can setup a very basic crash logger/printer.  
+This is intended to debug some annoying scenarios, and best used with the debug build of the emu.  
+
+To enable this feature create a file called `crash_printer_location.txt` inside your `steam_settings` folder,  
+and set the path to the crash log file on a single line.  
+
+Note that forward slashes `/` are encouraged for both Windows & Linux.  
+
+Check the example file `crash_printer_location.EXAMPLE.txt`  
+
+---
+
 ## Fake Windows dll/exe certificate and antivirus software:
 
 The Windows build is signed with a fake self-signed certificate, this helps in bypassing some basic checks by apps,  

post_build/steam_settings.EXAMPLE/crash_printer_location.EXAMPLE.txt

@@ -0,0 +1 @@
+./path/relative/to/dll/crashes.txt