mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-01 08:25:18 +01:00
847 lines
18 KiB
C++
847 lines
18 KiB
C++
/****************************************************************************
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* Snes9x 1.51 Nintendo Wii/Gamecube Port
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*
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* softdev July 2006
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* crunchy2 May 2007
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* Michniewski 2008
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* Tantric 2008-2009
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*
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* fileop.cpp
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*
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* File operations
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***************************************************************************/
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#include <gccore.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ogcsys.h>
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#include <sys/dir.h>
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#include <sys/stat.h>
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#include <zlib.h>
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#include <malloc.h>
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#include <sdcard/wiisd_io.h>
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#include <sdcard/gcsd.h>
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#include <ogc/usbstorage.h>
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#include <di/di.h>
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#include <ogc/dvd.h>
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#include <iso9660.h>
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#include "snes9xGX.h"
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#include "fileop.h"
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#include "networkop.h"
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#include "gcunzip.h"
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#include "menu.h"
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#include "filebrowser.h"
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#define THREAD_SLEEP 100
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unsigned char savebuffer[SAVEBUFFERSIZE] ATTRIBUTE_ALIGN(32);
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static mutex_t bufferLock = LWP_MUTEX_NULL;
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FILE * file; // file pointer - the only one we should ever use!
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bool unmountRequired[9] = { false, false, false, false, false, false, false, false, false };
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bool isMounted[9] = { false, false, false, false, false, false, false, false, false };
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#ifdef HW_RVL
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const DISC_INTERFACE* sd = &__io_wiisd;
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const DISC_INTERFACE* usb = &__io_usbstorage;
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const DISC_INTERFACE* dvd = &__io_wiidvd;
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#else
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const DISC_INTERFACE* carda = &__io_gcsda;
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const DISC_INTERFACE* cardb = &__io_gcsdb;
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const DISC_INTERFACE* dvd = &__io_gcdvd;
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#endif
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// folder parsing thread
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static lwp_t parsethread = LWP_THREAD_NULL;
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static DIR_ITER * dirIter = NULL;
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static bool parseHalt = true;
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bool ParseDirEntries();
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// device thread
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static lwp_t devicethread = LWP_THREAD_NULL;
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static bool deviceHalt = true;
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/****************************************************************************
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* ResumeDeviceThread
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*
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* Signals the device thread to start, and resumes the thread.
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***************************************************************************/
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void
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ResumeDeviceThread()
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{
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deviceHalt = false;
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LWP_ResumeThread(devicethread);
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}
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/****************************************************************************
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* HaltGui
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*
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* Signals the device thread to stop.
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***************************************************************************/
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void
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HaltDeviceThread()
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{
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deviceHalt = true;
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#ifdef HW_RVL
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if(inNetworkInit) // don't wait for network to initialize
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return;
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#endif
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// wait for thread to finish
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while(!LWP_ThreadIsSuspended(devicethread))
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usleep(THREAD_SLEEP);
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}
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/****************************************************************************
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* HaltParseThread
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*
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* Signals the parse thread to stop.
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***************************************************************************/
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void
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HaltParseThread()
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{
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parseHalt = true;
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while(!LWP_ThreadIsSuspended(parsethread))
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usleep(THREAD_SLEEP);
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}
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/****************************************************************************
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* devicecallback
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*
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* This checks our devices for changes (SD/USB removed) and
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* initializes the network in the background
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***************************************************************************/
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static int devsleep = 1*1000*1000;
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static void *
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devicecallback (void *arg)
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{
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while(devsleep > 0)
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{
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if(deviceHalt)
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LWP_SuspendThread(devicethread);
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usleep(THREAD_SLEEP);
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devsleep -= THREAD_SLEEP;
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}
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while (1)
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{
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#ifdef HW_RVL
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if(isMounted[DEVICE_SD])
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{
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if(!sd->isInserted()) // check if the device was removed
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{
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unmountRequired[DEVICE_SD] = true;
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isMounted[DEVICE_SD] = false;
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}
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}
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if(isMounted[DEVICE_USB])
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{
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if(!usb->isInserted()) // check if the device was removed
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{
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unmountRequired[DEVICE_USB] = true;
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isMounted[DEVICE_USB] = false;
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}
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}
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UpdateCheck();
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InitializeNetwork(SILENT);
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#else
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if(isMounted[DEVICE_SD_SLOTA])
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{
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if(!carda->isInserted()) // check if the device was removed
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{
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unmountRequired[DEVICE_SD_SLOTA] = true;
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isMounted[DEVICE_SD_SLOTA] = false;
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}
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}
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if(isMounted[DEVICE_SD_SLOTB])
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{
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if(!cardb->isInserted()) // check if the device was removed
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{
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unmountRequired[DEVICE_SD_SLOTB] = true;
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isMounted[DEVICE_SD_SLOTB] = false;
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}
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}
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#endif
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if(isMounted[DEVICE_DVD])
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{
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if(!dvd->isInserted()) // check if the device was removed
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{
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unmountRequired[DEVICE_DVD] = true;
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isMounted[DEVICE_DVD] = false;
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}
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}
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devsleep = 1000*1000; // 1 sec
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while(devsleep > 0)
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{
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if(deviceHalt)
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LWP_SuspendThread(devicethread);
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usleep(THREAD_SLEEP);
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devsleep -= THREAD_SLEEP;
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}
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}
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return NULL;
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}
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static void *
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parsecallback (void *arg)
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{
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while(1)
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{
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while(ParseDirEntries())
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usleep(THREAD_SLEEP);
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LWP_SuspendThread(parsethread);
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}
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return NULL;
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}
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/****************************************************************************
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* InitDeviceThread
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*
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* libOGC provides a nice wrapper for LWP access.
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* This function sets up a new local queue and attaches the thread to it.
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***************************************************************************/
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void
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InitDeviceThread()
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{
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LWP_CreateThread (&devicethread, devicecallback, NULL, NULL, 0, 40);
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LWP_CreateThread (&parsethread, parsecallback, NULL, NULL, 0, 80);
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}
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/****************************************************************************
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* UnmountAllFAT
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* Unmounts all FAT devices
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***************************************************************************/
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void UnmountAllFAT()
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{
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#ifdef HW_RVL
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fatUnmount("sd:");
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fatUnmount("usb:");
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#else
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fatUnmount("carda:");
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fatUnmount("cardb:");
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#endif
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}
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/****************************************************************************
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* MountFAT
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* Checks if the device needs to be (re)mounted
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* If so, unmounts the device
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* Attempts to mount the device specified
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* Sets libfat to use the device by default
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***************************************************************************/
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static bool MountFAT(int device, int silent)
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{
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bool mounted = false;
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int retry = 1;
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char name[10], name2[10];
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const DISC_INTERFACE* disc = NULL;
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switch(device)
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{
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#ifdef HW_RVL
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case DEVICE_SD:
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sprintf(name, "sd");
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sprintf(name2, "sd:");
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disc = sd;
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break;
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case DEVICE_USB:
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sprintf(name, "usb");
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sprintf(name2, "usb:");
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disc = usb;
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break;
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#else
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case DEVICE_SD_SLOTA:
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sprintf(name, "carda");
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sprintf(name2, "carda:");
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disc = carda;
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break;
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case DEVICE_SD_SLOTB:
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sprintf(name, "cardb");
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sprintf(name2, "cardb:");
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disc = cardb;
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break;
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#endif
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default:
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return false; // unknown device
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}
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if(unmountRequired[device])
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{
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unmountRequired[device] = false;
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fatUnmount(name2);
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disc->shutdown();
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isMounted[device] = false;
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}
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while(retry)
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{
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if(disc->startup() && fatMountSimple(name, disc))
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mounted = true;
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if(mounted || silent)
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break;
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if(device == DEVICE_SD)
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retry = ErrorPromptRetry("SD card not found!");
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else
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retry = ErrorPromptRetry("USB drive not found!");
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}
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isMounted[device] = mounted;
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return mounted;
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}
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void MountAllFAT()
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{
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#ifdef HW_RVL
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MountFAT(DEVICE_SD, SILENT);
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MountFAT(DEVICE_USB, SILENT);
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#else
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MountFAT(DEVICE_SD_SLOTA, SILENT);
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MountFAT(DEVICE_SD_SLOTB, SILENT);
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#endif
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}
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/****************************************************************************
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* MountDVD()
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*
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* Tests if a ISO9660 DVD is inserted and available, and mounts it
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***************************************************************************/
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bool MountDVD(bool silent)
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{
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bool mounted = false;
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int retry = 1;
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if(unmountRequired[DEVICE_DVD])
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{
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unmountRequired[DEVICE_DVD] = false;
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ISO9660_Unmount();
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}
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while(retry)
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{
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ShowAction("Loading DVD...");
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if(!dvd->isInserted())
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{
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if(silent)
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break;
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retry = ErrorPromptRetry("No disc inserted!");
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}
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else if(!ISO9660_Mount())
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{
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if(silent)
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break;
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retry = ErrorPromptRetry("Invalid DVD.");
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}
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else
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{
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mounted = true;
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break;
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}
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}
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CancelAction();
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isMounted[DEVICE_DVD] = mounted;
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return mounted;
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}
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bool FindDevice(char * filepath, int * device)
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{
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if(!filepath || filepath[0] == 0)
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return false;
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if(strncmp(filepath, "sd:", 3) == 0)
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{
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*device = DEVICE_SD;
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return true;
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}
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else if(strncmp(filepath, "usb:", 4) == 0)
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{
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*device = DEVICE_USB;
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return true;
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}
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else if(strncmp(filepath, "dvd:", 4) == 0)
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{
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*device = DEVICE_DVD;
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return true;
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}
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else if(strncmp(filepath, "smb:", 4) == 0)
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{
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*device = DEVICE_SMB;
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return true;
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}
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else if(strncmp(filepath, "carda:", 5) == 0)
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{
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*device = DEVICE_SD_SLOTA;
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return true;
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}
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else if(strncmp(filepath, "cardb:", 5) == 0)
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{
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*device = DEVICE_SD_SLOTB;
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return true;
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}
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return false;
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}
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char * StripDevice(char * path)
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{
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if(path == NULL)
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return NULL;
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char * newpath = strchr(path,'/');
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if(newpath != NULL)
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newpath++;
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return newpath;
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}
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/****************************************************************************
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* ChangeInterface
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* Attempts to mount/configure the device specified
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***************************************************************************/
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bool ChangeInterface(int device, bool silent)
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{
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if(isMounted[device])
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return true;
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bool mounted = false;
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switch(device)
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{
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case DEVICE_SD:
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case DEVICE_USB:
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mounted = MountFAT(device, silent);
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break;
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case DEVICE_DVD:
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mounted = MountDVD(silent);
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break;
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case DEVICE_SMB:
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mounted = ConnectShare(silent);
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break;
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}
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return mounted;
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}
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bool ChangeInterface(char * filepath, bool silent)
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{
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int device = -1;
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if(!FindDevice(filepath, &device))
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return false;
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return ChangeInterface(device, silent);
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}
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void CreateAppPath(char * origpath)
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{
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if(!origpath || origpath[0] == 0)
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return;
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char * path = strdup(origpath); // make a copy so we don't mess up original
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if(!path)
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return;
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char * loc = strrchr(path,'/');
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if (loc != NULL)
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*loc = 0; // strip file name
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int pos = 0;
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// replace fat:/ with sd:/
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if(strncmp(path, "fat:/", 5) == 0)
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{
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pos++;
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path[1] = 's';
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path[2] = 'd';
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}
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if(ChangeInterface(&path[pos], SILENT))
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strncpy(appPath, &path[pos], MAXPATHLEN);
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appPath[MAXPATHLEN-1] = 0;
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free(path);
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}
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bool ParseDirEntries()
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{
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if(!dirIter)
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return false;
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char filename[MAXPATHLEN];
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struct stat filestat;
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int i, res;
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for(i=0; i < 20; i++)
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{
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res = dirnext(dirIter,filename,&filestat);
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if(res != 0)
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break;
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if(strcmp(filename,".") == 0)
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{
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i--;
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continue;
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}
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if(!AddBrowserEntry())
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{
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i=0;
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parseHalt = true;
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break;
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}
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strncpy(browserList[browser.numEntries+i].filename, filename, MAXJOLIET);
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browserList[browser.numEntries+i].length = filestat.st_size;
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browserList[browser.numEntries+i].mtime = filestat.st_mtime;
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browserList[browser.numEntries+i].isdir = (filestat.st_mode & _IFDIR) == 0 ? 0 : 1; // flag this as a dir
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if(browserList[browser.numEntries+i].isdir)
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{
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if(strcmp(filename, "..") == 0)
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sprintf(browserList[browser.numEntries+i].displayname, "Up One Level");
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else
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strncpy(browserList[browser.numEntries+i].displayname, browserList[browser.numEntries+i].filename, MAXJOLIET);
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browserList[browser.numEntries+i].icon = ICON_FOLDER;
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}
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else
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{
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StripExt(browserList[browser.numEntries+i].displayname, browserList[browser.numEntries+i].filename); // hide file extension
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}
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}
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// Sort the file list
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if(i >= 0)
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{
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browser.numEntries += i;
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qsort(browserList, browser.numEntries, sizeof(BROWSERENTRY), FileSortCallback);
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}
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if(res != 0 || parseHalt)
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{
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dirclose(dirIter); // close directory
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dirIter = NULL;
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return false; // no more entries
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}
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return true; // more entries
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}
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/***************************************************************************
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* Browse subdirectories
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**************************************************************************/
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int
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ParseDirectory(bool waitParse)
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{
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char msg[128];
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int retry = 1;
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bool mounted = false;
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ResetBrowser(); // reset browser
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// open the directory
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while(dirIter == NULL && retry == 1)
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{
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mounted = ChangeInterface(browser.dir, NOTSILENT);
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if(mounted)
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dirIter = diropen(browser.dir);
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else
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return -1;
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if(dirIter == NULL)
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{
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sprintf(msg, "Error opening %s", browser.dir);
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retry = ErrorPromptRetry(msg);
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}
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}
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// if we can't open the dir, try higher levels
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if (dirIter == NULL)
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{
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char * devEnd = strrchr(browser.dir, '/');
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while(!IsDeviceRoot(browser.dir))
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{
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devEnd[0] = 0; // strip slash
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devEnd = strrchr(browser.dir, '/');
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if(devEnd == NULL)
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break;
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devEnd[1] = 0; // strip remaining file listing
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dirIter = diropen(browser.dir);
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if (dirIter)
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break;
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}
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}
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if(dirIter == NULL)
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return -1;
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if(IsDeviceRoot(browser.dir))
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{
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browser.numEntries = 1;
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sprintf(browserList[0].filename, "..");
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sprintf(browserList[0].displayname, "Up One Level");
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browserList[0].length = 0;
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browserList[0].mtime = 0;
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browserList[0].isdir = 1; // flag this as a dir
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browserList[0].icon = ICON_FOLDER;
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}
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|
|
parseHalt = false;
|
|
ParseDirEntries(); // index first 20 entries
|
|
LWP_ResumeThread(parsethread); // index remaining entries
|
|
|
|
if(waitParse) // wait for complete parsing
|
|
{
|
|
ShowAction("Loading...");
|
|
|
|
while(!LWP_ThreadIsSuspended(parsethread))
|
|
usleep(THREAD_SLEEP);
|
|
|
|
CancelAction();
|
|
}
|
|
|
|
return browser.numEntries;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* AllocSaveBuffer ()
|
|
* Clear and allocate the savebuffer
|
|
***************************************************************************/
|
|
void
|
|
AllocSaveBuffer ()
|
|
{
|
|
if(bufferLock == LWP_MUTEX_NULL)
|
|
LWP_MutexInit(&bufferLock, false);
|
|
|
|
if(bufferLock != LWP_MUTEX_NULL)
|
|
LWP_MutexLock(bufferLock);
|
|
memset (savebuffer, 0, SAVEBUFFERSIZE);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* FreeSaveBuffer ()
|
|
* Free the savebuffer memory
|
|
***************************************************************************/
|
|
void
|
|
FreeSaveBuffer ()
|
|
{
|
|
if(bufferLock != LWP_MUTEX_NULL)
|
|
LWP_MutexUnlock(bufferLock);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* LoadSzFile
|
|
* Loads the selected file # from the specified 7z into rbuffer
|
|
* Returns file size
|
|
***************************************************************************/
|
|
size_t
|
|
LoadSzFile(char * filepath, unsigned char * rbuffer)
|
|
{
|
|
size_t size = 0;
|
|
|
|
// stop checking if devices were removed/inserted
|
|
// since we're loading a file
|
|
HaltDeviceThread();
|
|
|
|
// halt parsing
|
|
HaltParseThread();
|
|
|
|
file = fopen (filepath, "rb");
|
|
if (file > 0)
|
|
{
|
|
size = SzExtractFile(browserList[browser.selIndex].filenum, rbuffer);
|
|
fclose (file);
|
|
}
|
|
else
|
|
{
|
|
ErrorPrompt("Error opening file");
|
|
}
|
|
|
|
// go back to checking if devices were inserted/removed
|
|
ResumeDeviceThread();
|
|
|
|
return size;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* LoadFile
|
|
***************************************************************************/
|
|
size_t
|
|
LoadFile (char * rbuffer, char *filepath, size_t length, bool silent)
|
|
{
|
|
char zipbuffer[2048];
|
|
size_t size = 0, offset = 0, readsize = 0;
|
|
int retry = 1;
|
|
int device;
|
|
|
|
if(!FindDevice(filepath, &device))
|
|
return 0;
|
|
|
|
// stop checking if devices were removed/inserted
|
|
// since we're loading a file
|
|
HaltDeviceThread();
|
|
|
|
// halt parsing
|
|
HaltParseThread();
|
|
|
|
// open the file
|
|
while(!size && retry)
|
|
{
|
|
if(!ChangeInterface(device, silent))
|
|
break;
|
|
|
|
file = fopen (filepath, "rb");
|
|
|
|
if(!file)
|
|
{
|
|
if(silent)
|
|
break;
|
|
|
|
retry = ErrorPromptRetry("Error opening file!");
|
|
continue;
|
|
}
|
|
|
|
if(length > 0 && length <= 2048) // do a partial read (eg: to check file header)
|
|
{
|
|
size = fread (rbuffer, 1, length, file);
|
|
}
|
|
else // load whole file
|
|
{
|
|
readsize = fread (zipbuffer, 1, 32, file);
|
|
|
|
if(!readsize)
|
|
{
|
|
unmountRequired[device] = true;
|
|
retry = ErrorPromptRetry("Error reading file!");
|
|
continue;
|
|
}
|
|
|
|
if (IsZipFile (zipbuffer))
|
|
{
|
|
size = UnZipBuffer ((unsigned char *)rbuffer); // unzip
|
|
}
|
|
else
|
|
{
|
|
fseeko(file,0,SEEK_END);
|
|
size = ftello(file);
|
|
fseeko(file,0,SEEK_SET);
|
|
|
|
while(!feof(file))
|
|
{
|
|
ShowProgress ("Loading...", offset, size);
|
|
readsize = fread (rbuffer + offset, 1, 4096, file); // read in next chunk
|
|
|
|
if(readsize <= 0)
|
|
break; // reading finished (or failed)
|
|
|
|
offset += readsize;
|
|
}
|
|
size = offset;
|
|
CancelAction();
|
|
}
|
|
}
|
|
fclose (file);
|
|
}
|
|
|
|
// go back to checking if devices were inserted/removed
|
|
ResumeDeviceThread();
|
|
CancelAction();
|
|
return size;
|
|
}
|
|
|
|
size_t LoadFile(char * filepath, bool silent)
|
|
{
|
|
return LoadFile((char *)savebuffer, filepath, 0, silent);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* SaveFile
|
|
* Write buffer to file
|
|
***************************************************************************/
|
|
size_t
|
|
SaveFile (char * buffer, char *filepath, size_t datasize, bool silent)
|
|
{
|
|
size_t written = 0;
|
|
size_t writesize, nextwrite;
|
|
int retry = 1;
|
|
int device;
|
|
|
|
if(!FindDevice(filepath, &device))
|
|
return 0;
|
|
|
|
if(datasize == 0)
|
|
return 0;
|
|
|
|
// stop checking if devices were removed/inserted
|
|
// since we're saving a file
|
|
HaltDeviceThread();
|
|
|
|
// halt parsing
|
|
HaltParseThread();
|
|
|
|
ShowAction("Saving...");
|
|
|
|
while(!written && retry == 1)
|
|
{
|
|
if(!ChangeInterface(device, silent))
|
|
break;
|
|
|
|
file = fopen (filepath, "wb");
|
|
|
|
if(!file)
|
|
{
|
|
if(silent)
|
|
break;
|
|
|
|
retry = ErrorPromptRetry("Error creating file!");
|
|
continue;
|
|
}
|
|
|
|
while(written < datasize)
|
|
{
|
|
if(datasize - written > 4096) nextwrite=4096;
|
|
else nextwrite = datasize-written;
|
|
writesize = fwrite (buffer+written, 1, nextwrite, file);
|
|
if(writesize != nextwrite) break; // write failure
|
|
written += writesize;
|
|
}
|
|
fclose (file);
|
|
|
|
if(written != datasize) written = 0;
|
|
|
|
if(!written)
|
|
{
|
|
unmountRequired[device] = true;
|
|
retry = ErrorPromptRetry("Error saving file!");
|
|
}
|
|
}
|
|
|
|
// go back to checking if devices were inserted/removed
|
|
ResumeDeviceThread();
|
|
|
|
CancelAction();
|
|
return written;
|
|
}
|
|
|
|
size_t SaveFile(char * filepath, size_t datasize, bool silent)
|
|
{
|
|
return SaveFile((char *)savebuffer, filepath, datasize, silent);
|
|
}
|