From 17a6148f9df406a6ca4bdca98777e0aaf21f582a Mon Sep 17 00:00:00 2001
From: bunnei <ericbunnie@gmail.com>
Date: Fri, 27 Jun 2014 16:18:56 -0400
Subject: FileSys: Added preliminary support for applications reading the RomFS
 archive.

Archive: Fixed brace ugliness for neobrain :)

FS: Commented out unused local variables to prevent warnings.

...But keeping them here for future use.

archive_romfs: Removed unused #include.
---
 src/core/hle/kernel/archive.cpp | 98 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 92 insertions(+), 6 deletions(-)

(limited to 'src/core/hle/kernel/archive.cpp')

diff --git a/src/core/hle/kernel/archive.cpp b/src/core/hle/kernel/archive.cpp
index d7351e702..f31c02ea9 100644
--- a/src/core/hle/kernel/archive.cpp
+++ b/src/core/hle/kernel/archive.cpp
@@ -4,6 +4,8 @@
 
 #include "common/common_types.h"
 
+#include "core/file_sys/archive.h"
+#include "core/hle/service/service.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/archive.h"
 
@@ -12,6 +14,21 @@
 
 namespace Kernel {
 
+// Command to access archive file
+enum class FileCommand : u32 {
+    Dummy1          = 0x000100C6,
+    Control         = 0x040100C4,
+    OpenSubFile     = 0x08010100,
+    Read            = 0x080200C2,
+    Write           = 0x08030102,
+    GetSize         = 0x08040000,
+    SetSize         = 0x08050080,
+    GetAttributes   = 0x08060000,
+    SetAttributes   = 0x08070040,
+    Close           = 0x08080000,
+    Flush           = 0x08090000,
+};
+
 class Archive : public Object {
 public:
     const char* GetTypeName() const { return "Archive"; }
@@ -20,7 +37,37 @@ public:
     static Kernel::HandleType GetStaticHandleType() { return HandleType::Archive; }
     Kernel::HandleType GetHandleType() const { return HandleType::Archive; }
 
-    std::string name; ///< Name of archive (optional)
+    std::string name;           ///< Name of archive (optional)
+    FileSys::Archive* backend;  ///< Archive backend interface
+
+    /**
+     * Synchronize kernel object 
+     * @param wait Boolean wait set if current thread should wait as a result of sync operation
+     * @return Result of operation, 0 on success, otherwise error code
+     */
+    Result SyncRequest(bool* wait) {
+        u32* cmd_buff = Service::GetCommandBuffer();
+        FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
+        switch (cmd) {
+
+        // Read from archive...
+        case FileCommand::Read:
+        {
+            u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
+            u32 length  = cmd_buff[3];
+            u32 address = cmd_buff[5];
+            cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
+            break;
+        }
+
+        // Unknown command...
+        default:
+            ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
+            return -1;
+        }
+        cmd_buff[1] = 0; // No error
+        return 0;
+    }
 
     /**
      * Wait for kernel object to synchronize
@@ -29,32 +76,71 @@ public:
      */
     Result WaitSynchronization(bool* wait) {
         // TODO(bunnei): ImplementMe
-        ERROR_LOG(OSHLE, "unimplemented function");
+        ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
         return 0;
     }
 };
 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+std::map<FileSys::Archive::IdCode, Handle> g_archive_map; ///< Map of file archives by IdCode
+
+/**
+ * Opens an archive
+ * @param id_code IdCode of the archive to open
+ * @return Handle to archive if it exists, otherwise a null handle (0)
+ */
+Handle OpenArchive(FileSys::Archive::IdCode id_code) {
+    auto itr = g_archive_map.find(id_code);
+    if (itr == g_archive_map.end()) {
+        return 0;
+    }
+    return itr->second;
+}
+
+/**
+ * Mounts an archive
+ * @param archive Pointer to the archive to mount
+ * @return Result of operation, 0 on success, otherwise error code
+ */
+Result MountArchive(Archive* archive) {
+    FileSys::Archive::IdCode id_code = archive->backend->GetIdCode();
+    if (0 != OpenArchive(id_code)) {
+        ERROR_LOG(KERNEL, "Cannot mount two archives with the same ID code! (%d)", (int) id_code);
+        return -1;
+    }
+    g_archive_map[id_code] = archive->GetHandle();
+    INFO_LOG(KERNEL, "Mounted archive %s", archive->GetName());
+    return 0;
+}
+
 /**
  * Creates an Archive
- * @param name Optional name of Archive
  * @param handle Handle to newly created archive object
+ * @param backend File system backend interface to the archive
+ * @param name Optional name of Archive
  * @return Newly created Archive object
  */
-Archive* CreateArchive(Handle& handle, const std::string& name) {
+Archive* CreateArchive(Handle& handle, FileSys::Archive* backend, const std::string& name) {
     Archive* archive = new Archive;
     handle = Kernel::g_object_pool.Create(archive);
     archive->name = name;
+    archive->backend = backend;
+
+    MountArchive(archive);
+    
     return archive;
 }
 
 /**
  * Creates an Archive
+ * @param backend File system backend interface to the archive
  * @param name Optional name of Archive
  * @return Handle to newly created Archive object
  */
-Handle CreateArchive(const std::string& name) {
+Handle CreateArchive(FileSys::Archive* backend, const std::string& name) {
     Handle handle;
-    Archive* archive = CreateArchive(handle, name);
+    Archive* archive = CreateArchive(handle, backend, name);
     return handle;
 }
 
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