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rockbox/tools/fwpatcher/main.c

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C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Thom Johansen
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* TODO: integrate the iriver.c and mkboot stuff better, they're pretty much
* intended to be called from a command line tool, and i haven't changed that.
*/
#include <stdio.h>
#include <string.h>
#include <tchar.h>
#include <windows.h>
#include "iriver.h"
#include "md5.h"
#include "resource.h"
#define WINDOW_WIDTH 280
#define WINDOW_HEIGHT 130
#define IDM_RESTORE 1000
#define IDM_EXIT 1010
#define LABEL_FILENAME 0
#define EDIT_FILENAME 1
#define BUTTON_BROWSE 2
#define BUTTON_PATCH 3
#define WM_COMMANDDRIVEN WM_APP
#define CTL_NUM 4
TCHAR appsversion[] = TEXT("Rockbox firmware patcher V" APPSVERSION);
struct sumpairs {
char *unpatched;
char *patched;
};
/* precalculated checksums for H110/H115 */
static struct sumpairs h100pairs[] = {
#include "h100sums.h"
};
/* precalculated checksums for H120/H140 */
static struct sumpairs h120pairs[] = {
#include "h120sums.h"
};
/* precalculated checksums for H320/H340 */
static struct sumpairs h300pairs[] = {
#include "h300sums.h"
};
HICON rbicon;
HFONT deffont;
HWND controls[CTL_NUM];
/* begin mkboot.c excerpt */
unsigned char image[0x400000 + 0x220 + 0x400000/0x200];
int mkboot(TCHAR *infile, TCHAR *outfile, unsigned char *bldata, int bllen,
int origin)
{
FILE *f;
int i;
int len;
int actual_length, total_length, binary_length, num_chksums;
memset(image, 0xff, sizeof(image));
/* First, read the iriver original firmware into the image */
f = _tfopen(infile, TEXT("rb"));
if(!f) {
_tperror(infile);
return 0;
}
i = fread(image, 1, 16, f);
if(i < 16) {
_tperror(infile);
return 0;
}
/* This is the length of the binary image without the scrambling
overhead (but including the ESTFBINR header) */
binary_length = image[4] + (image[5] << 8) +
(image[6] << 16) + (image[7] << 24);
/* Read the rest of the binary data, but not the checksum block */
len = binary_length+0x200-16;
i = fread(image+16, 1, len, f);
if(i < len) {
_tperror(infile);
return 0;
}
fclose(f);
memcpy(image + 0x220 + origin, bldata, bllen);
f = _tfopen(outfile, TEXT("wb"));
if(!f) {
_tperror(outfile);
return 0;
}
/* Patch the reset vector to start the boot loader */
image[0x220 + 4] = image[origin + 0x220 + 4];
image[0x220 + 5] = image[origin + 0x220 + 5];
image[0x220 + 6] = image[origin + 0x220 + 6];
image[0x220 + 7] = image[origin + 0x220 + 7];
/* This is the actual length of the binary, excluding all headers */
actual_length = origin + bllen;
/* Patch the ESTFBINR header */
image[0x20c] = (actual_length >> 24) & 0xff;
image[0x20d] = (actual_length >> 16) & 0xff;
image[0x20e] = (actual_length >> 8) & 0xff;
image[0x20f] = actual_length & 0xff;
image[0x21c] = (actual_length >> 24) & 0xff;
image[0x21d] = (actual_length >> 16) & 0xff;
image[0x21e] = (actual_length >> 8) & 0xff;
image[0x21f] = actual_length & 0xff;
/* This is the length of the binary, including the ESTFBINR header and
rounded up to the nearest 0x200 boundary */
binary_length = (actual_length + 0x20 + 0x1ff) & 0xfffffe00;
/* The number of checksums, i.e number of 0x200 byte blocks */
num_chksums = binary_length / 0x200;
/* The total file length, including all headers and checksums */
total_length = binary_length + num_chksums + 0x200;
/* Patch the scrambler header with the new length info */
image[0] = total_length & 0xff;
image[1] = (total_length >> 8) & 0xff;
image[2] = (total_length >> 16) & 0xff;
image[3] = (total_length >> 24) & 0xff;
image[4] = binary_length & 0xff;
image[5] = (binary_length >> 8) & 0xff;
image[6] = (binary_length >> 16) & 0xff;
image[7] = (binary_length >> 24) & 0xff;
image[8] = num_chksums & 0xff;
image[9] = (num_chksums >> 8) & 0xff;
image[10] = (num_chksums >> 16) & 0xff;
image[11] = (num_chksums >> 24) & 0xff;
i = fwrite(image, 1, total_length, f);
if(i < total_length) {
_tperror(outfile);
return 0;
}
fclose(f);
return 1;
}
/* end mkboot.c excerpt */
int intable(char *md5, struct sumpairs *table, int len)
{
int i;
for (i = 0; i < len; i++) {
if (strncmp(md5, table[i].unpatched, 32) == 0) {
return i;
}
}
return -1;
}
int FileMD5(TCHAR *name, char *md5)
{
int i, read;
md5_context ctx;
unsigned char md5sum[16];
unsigned char block[32768];
FILE *file;
file = _tfopen(name, TEXT("rb"));
if (!file) {
MessageBox(NULL,
TEXT("Could not open patched firmware for checksum check"),
TEXT("Error"), MB_ICONERROR);
return 0;
}
md5_starts(&ctx);
while ((read = fread(block, 1, sizeof(block), file)) > 0) {
md5_update(&ctx, block, read);
}
fclose(file);
md5_finish(&ctx, md5sum);
for (i = 0; i < 16; ++i)
sprintf(md5 + 2*i, "%02x", md5sum[i]);
return 1;
}
int PatchFirmware(int series, int table_entry)
{
TCHAR fn[MAX_PATH];
TCHAR name1[MAX_PATH], name2[MAX_PATH], name3[MAX_PATH];
HRSRC res;
HGLOBAL resload;
unsigned char *bootloader;
unsigned char md5sum_str[256];
DWORD blsize;
int i;
struct sumpairs *sums;
int origin;
/* get pointer to the correct bootloader.bin */
switch(series) {
case 100:
res = FindResource(NULL, MAKEINTRESOURCE(IDI_BOOTLOADERH100), TEXT("BIN"));
sums = &h100pairs[0];
origin = 0x1f0000;
break;
case 120:
res = FindResource(NULL, MAKEINTRESOURCE(IDI_BOOTLOADERH120), TEXT("BIN"));
sums = &h120pairs[0];
origin = 0x1f0000;
break;
case 300:
res = FindResource(NULL, MAKEINTRESOURCE(IDI_BOOTLOADERH300), TEXT("BIN"));
sums = &h300pairs[0];
origin = 0x3f0000;
break;
}
resload = LoadResource(NULL, res);
bootloader = (unsigned char *)LockResource(resload);
blsize = SizeofResource(NULL, res);
/* get filename from edit box */
GetWindowText(controls[EDIT_FILENAME], fn, MAX_PATH);
/* store temp files in temp directory */
GetTempPath(MAX_PATH, name1);
GetTempPath(MAX_PATH, name2);
GetTempPath(MAX_PATH, name3);
_tcscat(name1, TEXT("firmware.bin")); /* descrambled file */
_tcscat(name2, TEXT("new.bin")); /* patched file */
_tcscat(name3, TEXT("new.hex")); /* patched and scrambled file */
if (iriver_decode(fn, name1, FALSE, STRIP_NONE) == -1) {
MessageBox(NULL, TEXT("Error in descramble"),
TEXT("Error"), MB_ICONERROR);
goto error;
}
if (!mkboot(name1, name2, bootloader, blsize, origin)) {
MessageBox(NULL, TEXT("Error in patching"),
TEXT("Error"), MB_ICONERROR);
goto error;
}
if (iriver_encode(name2, name3, FALSE) == -1) {
MessageBox(NULL, TEXT("Error in scramble"),
TEXT("Error"), MB_ICONERROR);
goto error;
}
/* now md5sum it */
if (!FileMD5(name3, md5sum_str)) {
MessageBox(NULL, TEXT("Error in checksumming"),
TEXT("Error"), MB_ICONERROR);
goto error;
}
if (strncmp(sums[table_entry].patched, md5sum_str, 32) == 0) {
/* delete temp files */
DeleteFile(name1);
DeleteFile(name2);
/* all is fine, rename the patched file to original name of the firmware */
if (DeleteFile(fn) && MoveFile(name3, fn)) {
return 1;
}
else {
DeleteFile(name3); /* Deleting a perfectly good firmware here really */
MessageBox(NULL,
TEXT("Couldn't modify existing file.\n")
TEXT("Check if file is write protected, then try again."),
TEXT("Error"), MB_ICONERROR);
return 0;
}
}
MessageBox(NULL,
TEXT("Checksum doesn't match known good patched firmware.\n")
TEXT("Download another firmware image, then try again."),
TEXT("Error"), MB_ICONERROR);
error:
/* delete all temp files, don't care if some aren't created yet */
DeleteFile(name1);
DeleteFile(name2);
DeleteFile(name3);
return 0;
}
int FileDialog(TCHAR *fn)
{
OPENFILENAME ofn;
TCHAR filename[MAX_PATH];
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.lpstrFile = filename;
ofn.lpstrFile[0] = '\0'; // no default filename
ofn.nMaxFile = sizeof(filename);
ofn.lpstrFilter = TEXT("Firmware\0*.HEX\0");
ofn.nFilterIndex = 1;
ofn.lpstrFileTitle = NULL;
ofn.nMaxFileTitle = 0;
ofn.lpstrInitialDir = NULL;
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
if (GetOpenFileName(&ofn) == TRUE) {
_tcscpy(fn, filename);
return 1;
}
return 0;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
int i, series, table_entry;
unsigned char md5sum_str[256];
switch (msg) {
TCHAR fn[MAX_PATH];
case WM_CREATE:
/* text label */
controls[LABEL_FILENAME] =
CreateWindowEx(0, TEXT("STATIC"), TEXT("Firmware file name:"),
WS_CHILD | WS_VISIBLE, 10, 14,
100, 32, hwnd, 0, 0, 0);
/* text field for inputing file name */
controls[EDIT_FILENAME] =
CreateWindowEx(WS_EX_CLIENTEDGE, TEXT("EDIT"), TEXT(""),
WS_CHILD | WS_TABSTOP | WS_VISIBLE | ES_AUTOHSCROLL,
10, 35, 180, 20, hwnd, 0, 0, 0);
/* browse button */
controls[BUTTON_BROWSE] =
CreateWindowEx(0, TEXT("BUTTON"), TEXT("Browse"),
WS_CHILD | WS_TABSTOP | WS_VISIBLE, 200, 32, 70, 25,
hwnd, 0, 0, 0);
/* patch button */
controls[BUTTON_PATCH] =
CreateWindowEx(0, TEXT("BUTTON"), TEXT("Patch"),
WS_CHILD | WS_TABSTOP | WS_VISIBLE, 90, 70, 90, 25,
hwnd, 0, 0, 0);
/* set default font on all controls, will be ugly if we don't do this */
deffont = GetStockObject(DEFAULT_GUI_FONT);
for (i = 0; i < CTL_NUM; ++i)
SendMessage(controls[i], WM_SETFONT, (WPARAM)deffont,
MAKELPARAM(FALSE, 0));
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_SIZE:
break;
case WM_COMMAND:
/* user pressed browse button */
if (((HWND)lParam == controls[BUTTON_BROWSE])) {
TCHAR buf[MAX_PATH];
if (FileDialog(buf))
SetWindowText(controls[EDIT_FILENAME], buf);
}
/* user pressed patch button */
if (((HWND)lParam == controls[BUTTON_PATCH])) {
GetWindowText(controls[EDIT_FILENAME], fn, MAX_PATH);
if (!FileMD5(fn, md5sum_str)) {
MessageBox(NULL, TEXT("Couldn't open firmware"), TEXT("Fail"), MB_OK);
}
else {
/* Check firmware against md5sums in h120sums and h100sums */
series = 0;
table_entry = intable(md5sum_str, &h120pairs[0],
sizeof(h120pairs)/sizeof(struct sumpairs));
if (table_entry >= 0) {
series = 120;
}
else {
table_entry = intable(md5sum_str, &h100pairs[0],
sizeof(h100pairs)/sizeof(struct sumpairs));
if (table_entry >= 0) {
series = 100;
}
else {
table_entry =
intable(md5sum_str, &h300pairs[0],
sizeof(h300pairs)/sizeof(struct sumpairs));
if (table_entry >= 0)
series = 300;
}
}
if (series == 0) {
MessageBox(NULL, TEXT("Unrecognised firmware"), TEXT("Fail"), MB_OK);
}
else if (PatchFirmware(series, table_entry))
MessageBox(NULL, TEXT("Firmware patched successfully"),
TEXT("Success"), MB_OK);
}
}
break;
case WM_COMMANDDRIVEN:
/* command line driven patch button */
SetWindowText(controls[EDIT_FILENAME], (LPCTSTR)wParam);
SendMessage(hwnd, WM_COMMAND, 0, (LPARAM)(controls[BUTTON_PATCH]) );
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
void getargs(LPTSTR p, int * argc, LPCTSTR * argv, int MAXARGS)
{
int quote=FALSE,whitespace=FALSE;
LPCTSTR tok=p;
*argc=0;
while(*argc<MAXARGS)
{
if((*p==TEXT(' ') || *p==TEXT('\0')) && !quote)
{
if(!whitespace)
{
whitespace=TRUE;
*argv++ = tok;
(*argc)++;
};
if(*p==TEXT('\0'))
break; // end of cmd line
*p=TEXT('\0');
p++;
}
else
{
if(whitespace)
tok=p;
whitespace=FALSE;
if(*p==TEXT('\"'))
{
*p=TEXT(' ');
if(!quote)
{
p++;
tok=p;
}
quote = !quote;
}
else p++;
}
}
}
#define MAXARGC 4
int WINAPI WinMain(HINSTANCE instance, HINSTANCE prev_instance,
LPSTR command_line, int command_show)
{
HWND window;
WNDCLASSEX wc;
MSG msg;
int argc;
LPCTSTR argv[MAXARGC] = { NULL };
LPTSTR cmdline = GetCommandLine();
getargs(cmdline, &argc, argv, MAXARGC);
if (argc > 1)
command_show = SW_HIDE;
rbicon = LoadIcon(instance, MAKEINTRESOURCE(IDI_RBICON));
ZeroMemory(&wc, sizeof(wc));
wc.cbSize = sizeof(wc);
wc.lpfnWndProc = WndProc;
wc.hInstance = instance;
wc.hIcon = rbicon;
wc.hCursor = LoadCursor(0, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_3DFACE + 1);
wc.lpszClassName = TEXT("patcher");
RegisterClassEx(&wc);
window = CreateWindowEx(0, TEXT("patcher"), appsversion,
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU |
WS_MINIMIZEBOX, CW_USEDEFAULT, CW_USEDEFAULT,
WINDOW_WIDTH, WINDOW_HEIGHT, 0, 0, instance, NULL);
if (!window) return 0;
ShowWindow(window, command_show);
if (argc > 1) {
SendMessage(window, WM_COMMANDDRIVEN, (WPARAM)(argv[1]), 0);
SendMessage(window, WM_CLOSE, 0, 0);
}
while (GetMessage(&msg, 0, 0, 0) > 0) {
if (!IsDialogMessage(window, &msg)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return 0;
}
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