cleanup and fix

Author: JoseAaronLopezGarcia

libpspexploit.c

@@ -240,31 +240,42 @@ u32 pspXploitFindTextAddrByName(const char *modulename)
 
 u32 pspXploitFindFunction(const char *module, const char *library, u32 nid)
 {
-    u32 addr = pspXploitFindTextAddrByName(module);
+    //u32 addr = pspXploitFindTextAddrByName(module);
+    SceModule* mod = (SceModule*)pspXploitFindModuleByName(module);
 
-    if (addr) {
-        u32 maxaddr = 0x88400000;
-        for (; addr < maxaddr; addr += 4) {
-            if (strcmp(library, (const char *)addr) == 0) {
+    if (mod) {
+        // Fetch Export Table Start Address
+        void * entTab = mod->ent_top;
+        
+        // Iterate Exports
+        for (int i = 0; i < mod->ent_size;)
+        {
+            // Cast Export Table Entry
+            struct SceLibraryEntryTable * entry = (struct SceLibraryEntryTable *)(entTab + i);
+            
+            // Found Matching Library
+            if(entry->libname != NULL && 0 == strcmp(entry->libname, library))
+            {
+                // Accumulate Function and Variable Exports
+                unsigned int total = entry->stubcount + entry->vstubcount;
 
-                u32 libaddr = addr;
-
-                while (*(u32*)(addr -= 4) != libaddr);
-
-                u32 exports = (u32)(*(u16*)(addr + 10) + *(u8*)(addr + 9));
-                u32 jump = exports * 4;
-
-                addr = *(u32*)(addr + 12);
-
-                while (exports--) {
-                    if (*(u32*)addr == nid){
-                        return *(u32*)(addr + jump);
+                // NID + Address Table
+                unsigned int * vars = entry->entrytable;
+                
+                // Exports available
+                if(total > 0)
+                {
+                    // Iterate Exports
+                    for(int j = 0; j < total; j++)
+                    {
+                        // Found Matching NID
+                        if(vars[j] == nid) return vars[total + j];
                     }
-                    addr += 4;
                 }
-
-                return 0;
             }
+            
+            // Move Pointer
+            i += (entry->len * 4);
         }
     }
     return 0;
@@ -357,64 +368,6 @@ void pspXploitPatchAccurateError(u32 text_addr, u32 text_size, u16 error)
     }
 }
 
-// qwikrazor87's trick to get any usermode import from kernel
-u32 pspXploitResolveImport(char* lib, u32 nid, u32 version){
-
-    u32 ret = 0x08800E00;
-
-    while (*(u32*)ret)
-        ret += 8;
-
-    memset((void *)0x08800D00, 0, 8);
-
-    pspXploitOpenP5(PSP_UTILITY_SAVEDATA_AUTOLOAD);
-
-    u32 addr;
-    for (addr = 0x08400000; addr < 0x08800000; addr += 4) {
-        if (strcmp("sceVshSDAuto_Module", (char *)addr) == 0)
-            break;
-    }
-
-    pspXploitCloseP5();
-
-    addr -= 0xBC;
-    *(u32*)0x08800C00 = nid;
-
-    int qwik_trick()
-    {
-        sceKernelDelayThread(350);
-        u32 timer = 0;
-
-        while (!*(u32*)0x08800D00 && (timer++ < 600)) {
-            _sw((u32)lib, addr);
-            _sw(version, addr + 4);
-            _sw(0x00010005, addr + 8);
-            _sw(0x08800C00, addr + 12);
-            _sw(0x08800D00, addr + 16);
-
-            sceKernelDelayThread(0);
-        }
-
-        sceKernelExitThread(0);
-        return 0;
-    }
-
-    SceUID qwiktrick = sceKernelCreateThread("qwiktrick", qwik_trick, 8, 512, THREAD_ATTR_USER, NULL);
-    sceKernelStartThread(qwiktrick, 0, NULL);
-
-    pspXploitOpenP5(PSP_UTILITY_SAVEDATA_AUTOLOAD);
-
-    memcpy((void *)ret, (const void *)0x08800D00, 8);
-
-    _flush_cache();
-
-    pspXploitCloseP5();
-
-    sceKernelDeleteThread(qwiktrick);
-    
-    return ret;
-}
-
 int pspXploitIsKernel(){
     u32 ra;
     __asm__ volatile ("move %0, $ra;" : "=r"(ra));

libpspexploit.h

@@ -182,7 +182,6 @@ u32 pspXploitFindImportUserRam(char *libname, u32 nid);
 int pspXploitOpenP5(int mode);
 int pspXploitCloseP5();
 u32 pspXploitFindFunctionFromUsermode(const char *library, u32 nid, void* buf, u32 size);
-u32 pspXploitResolveImport(char* lib, u32 nid, u32 version);
 
 // Kernel Utils
 void pspXploitScanKernelFunctions(KernelFunctions* kfuncs);