From 4e8f62248b695bf3a059ca8353eff33b7080bde6 Mon Sep 17 00:00:00 2001
From: Maschell <Maschell@gmx.de>
Date: Sun, 6 Mar 2022 12:51:45 +0100
Subject: [PATCH] Parse the meta.ini from buffer

---
 src/FileUtils.cpp  | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 src/FileUtils.h    |  4 +++-
 src/RPXLoading.cpp | 18 ++++++++++++----
 3 files changed, 71 insertions(+), 5 deletions(-)

diff --git a/src/FileUtils.cpp b/src/FileUtils.cpp
index 9286d86..cca71ec 100644
--- a/src/FileUtils.cpp
+++ b/src/FileUtils.cpp
@@ -12,6 +12,7 @@
 #include <coreinit/debug.h>
 #include <coreinit/thread.h>
 #include <dirent.h>
+#include <fcntl.h>
 #include <map>
 
 extern "C" OSMessageQueue *OSGetDefaultAppIOQueue();
@@ -199,4 +200,57 @@ int32_t getRPXInfoForPath(const std::string &path, romfs_fileInfo *info) {
         return -4;
     }
     return res;
+}
+
+int32_t LoadFileToMem(const char *filepath, uint8_t **inbuffer, uint32_t *size) {
+    //! always initialze input
+    *inbuffer = nullptr;
+    if (size) {
+        *size = 0;
+    }
+
+    int32_t iFd = open(filepath, O_RDONLY);
+    if (iFd < 0) {
+        return -1;
+    }
+
+    uint32_t filesize = lseek(iFd, 0, SEEK_END);
+    lseek(iFd, 0, SEEK_SET);
+
+    auto *buffer = (uint8_t *) memalign(0x40, ROUNDUP(filesize, 0x40));
+    if (buffer == nullptr) {
+        close(iFd);
+        return -2;
+    }
+
+    uint32_t blocksize = 0x20000;
+    uint32_t done      = 0;
+    int32_t readBytes;
+
+    while (done < filesize) {
+        if (done + blocksize > filesize) {
+            blocksize = filesize - done;
+        }
+        readBytes = read(iFd, buffer + done, blocksize);
+        if (readBytes <= 0)
+            break;
+        done += readBytes;
+    }
+
+    ::close(iFd);
+
+    if (done != filesize) {
+        free(buffer);
+        buffer = nullptr;
+        return -3;
+    }
+
+    *inbuffer = buffer;
+
+    //! sign is optional input
+    if (size) {
+        *size = filesize;
+    }
+
+    return filesize;
 }
\ No newline at end of file
diff --git a/src/FileUtils.h b/src/FileUtils.h
index d4aa6c8..04789ca 100644
--- a/src/FileUtils.h
+++ b/src/FileUtils.h
@@ -22,4 +22,6 @@ int32_t CreateSubfolder(const char *fullpath);
 
 int32_t getRPXInfoForPath(const std::string &path, romfs_fileInfo *info);
 
-int32_t CheckFile(const char *filepath);
\ No newline at end of file
+int32_t CheckFile(const char *filepath);
+
+int32_t LoadFileToMem(const char *filepath, uint8_t **inbuffer, uint32_t *size);
\ No newline at end of file
diff --git a/src/RPXLoading.cpp b/src/RPXLoading.cpp
index b9e6590..2887dbf 100644
--- a/src/RPXLoading.cpp
+++ b/src/RPXLoading.cpp
@@ -128,11 +128,21 @@ bool RL_LoadFromSDOnNextLaunch(const char *bundle_path) {
         request.fileoffset = ((uint32_t *) &info.offset)[1];
 
         if (romfsMount("rcc", completePath.c_str(), RomfsSource_FileDescriptor_CafeOS) == 0) {
-            if (ini_parse("rcc:/meta/meta.ini", parseINIhandler, &gReplacementInfo.rpxReplacementInfo.metaInformation) < 0) {
-                DEBUG_FUNCTION_LINE("Failed to load and parse meta.ini");
-            } else {
-                metaLoaded = true;
+            uint8_t *buffer = nullptr;
+            uint32_t size   = 0;
+            if (LoadFileToMem("rcc:/meta/meta.ini", &buffer, &size) >= 0 && size > 0) {
+                buffer[size - 1] = 0;
+                if (ini_parse_string((const char *) buffer, parseINIhandler, &gReplacementInfo.rpxReplacementInfo.metaInformation) < 0) {
+                    DEBUG_FUNCTION_LINE("Failed to load and parse meta.ini");
+                } else {
+                    metaLoaded = true;
+                }
             }
+            if (buffer) {
+                free(buffer);
+                buffer = nullptr;
+            }
+
             FileReader *reader = nullptr;
 
             if (CheckFile("rcc:/meta/iconTex.tga")) {