From 23ab99924f4f4e60615051899c8b6eb6d174c081 Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Mon, 20 Nov 2023 08:51:18 +0200
Subject: [PATCH] fileio hle calls

---
 src/core/hle/libraries/libc/libc.cpp       |  5 +++
 src/core/hle/libraries/libc/libc_stdio.cpp | 42 ++++++++++++++++++----
 src/core/hle/libraries/libc/libc_stdio.h   |  7 +++-
 3 files changed, 47 insertions(+), 7 deletions(-)

diff --git a/src/core/hle/libraries/libc/libc.cpp b/src/core/hle/libraries/libc/libc.cpp
index 8d2736958..719967f3b 100644
--- a/src/core/hle/libraries/libc/libc.cpp
+++ b/src/core/hle/libraries/libc/libc.cpp
@@ -438,6 +438,11 @@ void libcSymbolsRegister(Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("Q2V+iqvjgC0", "libc", 1, "libc", 1, 1, ps4_vsnprintf);
     LIB_FUNCTION("YQ0navp+YIc", "libc", 1, "libc", 1, 1, ps4_puts);
     LIB_FUNCTION("fffwELXNVFA", "libc", 1, "libc", 1, 1, ps4_fprintf);
+    LIB_FUNCTION("xeYO4u7uyJ0", "libc", 1, "libc", 1, 1, ps4_fopen);
+    LIB_FUNCTION("rQFVBXp-Cxg", "libc", 1, "libc", 1, 1, ps4_fseek);
+    LIB_FUNCTION("Qazy8LmXTvw", "libc", 1, "libc", 1, 1, ps4_ftell);
+    LIB_FUNCTION("lbB+UlZqVG0", "libc", 1, "libc", 1, 1, ps4_fread);
+    LIB_FUNCTION("uodLYyUip20", "libc", 1, "libc", 1, 1, ps4_fclose);
 
     // misc
     LIB_OBJ("P330P3dFF68", "libc", 1, "libc", 1, 1, &g_need_sceLibc);
diff --git a/src/core/hle/libraries/libc/libc_stdio.cpp b/src/core/hle/libraries/libc/libc_stdio.cpp
index b3b5dac28..adbabb0eb 100644
--- a/src/core/hle/libraries/libc/libc_stdio.cpp
+++ b/src/core/hle/libraries/libc/libc_stdio.cpp
@@ -1,6 +1,10 @@
+#include "core/hle/libraries/libc/libc_stdio.h"
+
+#include <core/file_sys/fs.h>
+
 #include "common/debug.h"
 #include "common/log.h"
-#include "core/hle/libraries/libc/libc_stdio.h"
+#include "common/singleton.h"
 
 namespace Core::Libraries::LibC {
 
@@ -22,12 +26,38 @@ int PS4_SYSV_ABI ps4_fprintf(FILE* file, VA_ARGS) {
     return 0;
 }
 
-int PS4_SYSV_ABI ps4_vsnprintf(char* s, size_t n, const char* format, VaList* arg) {
-    return vsnprintf_ctx(s, n, format, arg);
+int PS4_SYSV_ABI ps4_vsnprintf(char* s, size_t n, const char* format, VaList* arg) { return vsnprintf_ctx(s, n, format, arg); }
+
+int PS4_SYSV_ABI ps4_puts(const char* s) { return std::puts(s); }
+
+FILE* PS4_SYSV_ABI ps4_fopen(const char* filename, const char* mode) {
+    LOG_INFO_IF(log_file_libc, "fopen filename={} , mode ={}\n", filename, mode);
+    auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
+    auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
+
+    u32 handle = h->createHandle();
+    auto* file = h->getFile(handle);
+    file->m_guest_name = filename;
+    file->m_host_name = mnt->getHostFile(file->m_guest_name);
+    FILE* f = std::fopen(file->m_host_name.c_str(), mode);
+    if (!f) {
+        LOG_ERROR_IF(log_file_libc, "fopen can't open file={}\n", filename);
+    }
+    return f;
 }
 
-int PS4_SYSV_ABI ps4_puts(const char* s) {
-    return std::puts(s);
+int PS4_SYSV_ABI ps4_fseek(FILE* stream, long int offset, int origin) { return std::fseek(stream, offset, origin); }
+
+long PS4_SYSV_ABI ps4_ftell(FILE* stream) { return std::ftell(stream); }
+
+size_t PS4_SYSV_ABI ps4_fread(void* ptr, size_t size, size_t count, FILE* stream) { return std::fread(ptr, size, count, stream); }
+
+int PS4_SYSV_ABI ps4_fclose(FILE* stream) {
+    LOG_INFO_IF(log_file_libc, "fclose\n");
+    if (stream != nullptr) {
+        std::fclose(stream);
+    }
+    return 0;
 }
 
-} // namespace Core::Libraries::LibC
+}  // namespace Core::Libraries::LibC
diff --git a/src/core/hle/libraries/libc/libc_stdio.h b/src/core/hle/libraries/libc/libc_stdio.h
index 2992d07f2..fdbbb25c9 100644
--- a/src/core/hle/libraries/libc/libc_stdio.h
+++ b/src/core/hle/libraries/libc/libc_stdio.h
@@ -9,5 +9,10 @@ int PS4_SYSV_ABI ps4_printf(VA_ARGS);
 int PS4_SYSV_ABI ps4_vsnprintf(char* s, size_t n, const char* format, VaList* arg);
 int PS4_SYSV_ABI ps4_puts(const char* s);
 int PS4_SYSV_ABI ps4_fprintf(FILE* file, VA_ARGS);
+FILE* PS4_SYSV_ABI ps4_fopen(const char* filename, const char* mode);
+int PS4_SYSV_ABI ps4_fseek(FILE* stream, long int offset, int origin);
+long PS4_SYSV_ABI ps4_ftell(FILE* stream);
+size_t PS4_SYSV_ABI ps4_fread(void* ptr, size_t size, size_t count, FILE* stream);
+int PS4_SYSV_ABI ps4_fclose(FILE* stream);
 
-} // namespace Core::Libraries::LibC
+}  // namespace Core::Libraries::LibC