wildcard search

dist/popnhax/popnhax.xml

@@ -99,7 +99,6 @@
     <!-- PLEASE USE OFFLINE ONLY -->
     <practice_mode __type="bool">0</practice_mode>
     <!-- Press 9 on option select screen to go back to song selection (requires quick_retire) -->
-    <!-- Note: causes issues with sounds on song select -->
     <back_to_song_select __type="bool">0</back_to_song_select>
 
 

popnhax/custom_categs.cc

@@ -197,6 +197,7 @@ void hook_remove_from_favorite()
     real_remove_from_favorite();
 }
 
+extern bool (*popn22_is_normal_mode)();
 //this replaces the category handling function ( add_song_in_list is a subroutine called by the game )
 void (*real_categ_favorite)();
 void categ_inject_favorites()
@@ -205,7 +206,13 @@ void categ_inject_favorites()
     __asm("push ecx\n");
     __asm("push edx\n");
 
-    //fake login if necessary
+    //fake login if necessary, only in normal mode
+    __asm("push eax");
+    __asm("call %0"::"a"(popn22_is_normal_mode));
+    __asm("test al,al");
+    __asm("pop eax");
+    __asm("je skip_fake_login");
+
     __asm("mov ecx, dword ptr [_g_playerdata_ptr_addr]\n");
     __asm("mov edx, [ecx]\n");
     __asm("add edx, 0x1A5\n"); //offset where result screen is checking to decide if the favorite option should be displayed/handled
@@ -680,6 +687,31 @@ static bool patch_custom_track_format(const char *game_dll_fn) {
     return true;
 }
 
+void (*real_remove_fake_login)();
+void hook_remove_fake_login()
+{
+    //getPlayerDataAddr was just called so eax contains _playerdata_addr
+    __asm("push ecx\n");
+
+    __asm("lea ecx, [eax+0x08]\n"); //friendid offset
+    __asm("mov ecx, [ecx]\n");
+    __asm("cmp ecx, 0x61666564\n"); //defa
+    __asm("jne skip_remove_login\n");
+    __asm("lea ecx, [eax+0x0C]\n"); //friendid offset
+    __asm("mov ecx, [ecx]\n");
+    __asm("cmp ecx, 0x00746C75\n"); //ult
+    __asm("jne skip_remove_login\n");
+
+    //fake login detected, cleanup
+    __asm("lea ecx, [eax+0x1A5]\n"); //login status offset
+    __asm("mov dword ptr [ecx], 0x00000000\n");
+
+    __asm("skip_remove_login:\n");
+
+    __asm("pop ecx\n");
+    real_remove_fake_login();
+}
+
 static bool patch_favorite_categ(const char *game_dll_fn) {
 
     DWORD dllSize = 0;
@@ -711,6 +743,19 @@ static bool patch_favorite_categ(const char *game_dll_fn) {
          MH_CreateHook((LPVOID)function_addr, (LPVOID)categ_inject_favorites,
                      (void **)&real_categ_favorite);
     }
+
+    //only active in normal mode
+    {
+        int64_t pattern_offset = search(data, dllSize, "\x83\xC4\x0C\x33\xC0\xC3\xCC\xCC\xCC\xCC\xE8", 11, 0);
+        if (pattern_offset == -1) {
+            LOG("popnhax: local_favorites: cannot find is_normal_mode function, fallback to best effort (active in all modes)\n");
+        }
+        else
+        {
+            popn22_is_normal_mode = (bool(*)()) (data + pattern_offset + 0x0A);
+        }
+    }
+
     //categ_inject_favorites will need to force "logged in" status (for result screen)
     {
         //this is the same function used in score challenge patch, checking if we're logged in... but now we just directly retrieve the address
@@ -722,6 +767,19 @@ static bool patch_favorite_categ(const char *game_dll_fn) {
 
         g_playerdata_ptr_addr = (*(uint32_t *)(data + pattern_offset + 0x25));
     }
+    //and I need to remove the fake "logged in" status on credit end to prevent a crash
+    {
+        int64_t pattern_offset = search(data, dllSize, "\x84\xC0\x74\x07\xBB\x01\x00\x00\x00\xEB\x02\x33\xDB", 13, 0);
+        if (pattern_offset == -1) {
+            LOG("popnhax: local_favorites: cannot find end of credit check if logged function\n");
+            return false;
+        }
+
+        uint64_t patch_addr = (int64_t)data + pattern_offset - 0x05;
+
+        MH_CreateHook((LPVOID)patch_addr, (LPVOID)hook_remove_fake_login,
+                     (void **)&real_remove_fake_login);
+    }
 
     //hook result screen to replace 3 functions
     {

popnhax/dllmain.cc

@@ -986,6 +986,13 @@ uint8_t g_srambypass = 0;
 void (*real_option_screen_later)();
 void backtosongselect_option_screen()
 {
+    /* cannot use backtosongselect when not in normal mode */
+    __asm("push eax");
+    __asm("call %0"::"a"(popn22_is_normal_mode));
+    __asm("test al,al");
+    __asm("pop eax");
+    __asm("je exit_back_select");
+
     __asm("push ecx\n");
     __asm("mov ecx, %0\n": :"m"(g_addr_icca));
     __asm("mov ebx, [ecx]\n");
@@ -1068,6 +1075,13 @@ void backtosongselect_option_screen_auto_leave()
 void (*real_option_screen_yellow)();
 void backtosongselect_option_yellow()
 {
+    /* cannot use backtosongselect when not in normal mode */
+    __asm("push eax");
+    __asm("call %0"::"a"(popn22_is_normal_mode));
+    __asm("test al,al");
+    __asm("pop eax");
+    __asm("je exit_back_select_yellow");
+
     __asm("push ecx\n");
     __asm("mov ecx, %0\n": :"m"(g_addr_icca));
     __asm("mov ebx, [ecx]\n");
@@ -1412,7 +1426,7 @@ void quickexit_result_loop()
     __asm("push eax\n");
     __asm("push ecx\n");
     __asm("push edx\n");
-    __asm("mov eax, 0x1F\n"); //"exit menu" sound fx
+    __asm("mov eax, 0x16\n"); //"okay" sound fx
     __asm("push 0\n");
     __asm("call %0\n"::"D"(playsramsound_func));
     __asm("add esp, 4\n");
@@ -1435,7 +1449,7 @@ void quickexit_result_loop()
     __asm("push eax\n");
     __asm("push ecx\n");
     __asm("push edx\n");
-    __asm("mov eax, 0x09\n"); //"bring menu" sound fx
+    __asm("mov eax, 0x16\n"); //"okay" sound fx
     __asm("push 0\n");
     __asm("call %0\n"::"D"(playsramsound_func));
     __asm("add esp, 4\n");
@@ -3287,6 +3301,18 @@ static bool patch_quick_retire(bool pfree)
                          (void **)&real_stage_increment);
         }
 
+        /* pfree already retrieves this function
+         */
+        {
+            int64_t pattern_offset = search(data, dllSize, "\x83\xC4\x0C\x33\xC0\xC3\xCC\xCC\xCC\xCC\xE8", 11, 0);
+            if (pattern_offset == -1) {
+                LOG("popnhax:  quick retire: cannot find is_normal_mode function, fallback to best effort (active in all modes)\n");
+            }
+            else
+            {
+                popn22_is_normal_mode = (bool(*)()) (data + pattern_offset + 0x0A);
+            }
+        }
     }
 
     /* instant retire with numpad 9 in song */

util/search.cc

@@ -26,7 +26,7 @@ static void badCharHeuristic(const unsigned char *str, int size, int* badchar) {
 
 #define DEBUG_SEARCH 0
 
-int _search(unsigned char *haystack, size_t haystack_size, const unsigned char *needle, size_t needle_size, int orig_offset, int debug) {
+int _search(unsigned char *haystack, size_t haystack_size, const unsigned char *needle, size_t needle_size, int orig_offset, bool wildcards, int debug) {
     int badchar[NO_OF_CHARS];
 
     badCharHeuristic(needle, needle_size, badchar);
@@ -46,12 +46,21 @@ int _search(unsigned char *haystack, size_t haystack_size, const unsigned char *
         LOG("pat...");
         for (size_t i = 0; i < needle_size; i++)
         {
-            LOG("%02x ", needle[i]);
+            if (wildcards && needle[i] == '?')
+                LOG("** ");
+            else
+                LOG("%02x ", needle[i]);
         }
         LOG("\n");
  }
-        while (j >= 0 && needle[j] == haystack[orig_offset + s + j])
+        if ( wildcards )
-            j--;
+        {
+            while (j >= 0 && ( needle[j] == '?' || needle[j] == haystack[orig_offset + s + j]) )
+                j--;
+        } else {
+            while (j >= 0 && ( needle[j] == haystack[orig_offset + s + j]) )
+                j--;
+        }
 
         if (j < 0) {
                 if (debug)
@@ -70,11 +79,21 @@ int _search(unsigned char *haystack, size_t haystack_size, const unsigned char *
 }
 
 int search(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset) {
-    int res = _search((unsigned char*) haystack, haystack_size, (const unsigned char *)needle, needle_size, orig_offset, 0);
+    int res = _search((unsigned char*) haystack, haystack_size, (const unsigned char *)needle, needle_size, orig_offset, false, 0);
+    return res;
+}
+
+int wildcard_search(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset) {
+    int res = _search((unsigned char*) haystack, haystack_size, (const unsigned char *)needle, needle_size, orig_offset, true, 0);
     return res;
 }
 
 int search_debug(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset) {
-    int res = _search((unsigned char*) haystack, haystack_size, (const unsigned char *)needle, needle_size, orig_offset, 2);
+    int res = _search((unsigned char*) haystack, haystack_size, (const unsigned char *)needle, needle_size, orig_offset, false, 2);
+    return res;
+}
+
+int wildcard_search_debug(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset) {
+    int res = _search((unsigned char*) haystack, haystack_size, (const unsigned char *)needle, needle_size, orig_offset, true, 2);
     return res;
 }

util/search.h

@@ -3,5 +3,7 @@
 
 int search(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset);
 int search_debug(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset);
+int wildcard_search(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset);
+int wildcard_search_debug(char *haystack, size_t haystack_size, const char *needle, size_t needle_size, size_t orig_offset);
 
 #endif