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mkboot500: fix compilation on MacOS

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code changes limited to L-31-37,
rest is trailing whitespace cleanup

Change-Id: Iaec8f1daec5112715085f1a59b0347044fcbbc09
This commit is contained in:
Christian Soffke 2024-12-17 13:33:35 +01:00
parent cede12f197
commit aeb4b6c34a
1 changed files with 81 additions and 74 deletions
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155
tools/mr500.c
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@ -6,8 +6,8 @@
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2009 by Karl Kurbjun
* based on work by Shirour:
* Copyright (C) 2009 by Karl Kurbjun
* based on work by Shirour:
* http://www.mrobe.org/forum/viewtopic.php?f=6&t=2176
* $Id$
*
@ -28,6 +28,13 @@
#include <inttypes.h>
#include <sys/stat.h>
#include "mr500.h"
#ifdef __APPLE__
#include <libkern/OSByteOrder.h>
#define htole32(x) OSSwapHostToLittleInt32(x)
#define htole16(x) OSSwapHostToLittleInt16(x)
#define le32toh(x) OSSwapLittleToHostInt32(x)
#define le16toh(x) OSSwapLittleToHostInt16(x)
#endif
/* Notes about firmware:
* These notes are based on the work and observations of Shirour on the M:Robe
@ -54,7 +61,7 @@ int encrypt_array[16];
/* mr500_patch_file: This function modifies the specified file with the patches
* struct.
*
*
* Parameters:
* filename: text filename
* patches: pointer to structure array of patches
@ -68,44 +75,44 @@ int mr500_patch_file(char *filename, struct patch_single *patches,
int fdo;
int ret=0;
uint32_t endian_int;
/* Open the file write only. */
fdo = open(filename, O_WRONLY);
if(fdo<0) {
ret=-1;
}
while(num_patches--) {
/* seek to patch offset */
if(lseek(fdo, patches[num_patches].offset, SEEK_SET)
if(lseek(fdo, patches[num_patches].offset, SEEK_SET)
!= patches[num_patches].offset) {
ret=-1;
break;
}
/* Make sure patch is written in little endian format */
endian_int = htole32(patches[num_patches].value);
/* Write the patch value to the file */
if(write(fdo, (void *) &endian_int, sizeof(endian_int)) < 0) {
ret = -1;
break;
}
}
/* Close the file and check for errors */
if(close (fdo) < 0) {
ret = -1;
}
return ret;
}
/* mr500_save_header: This function saves the Olympus header to the firmware
* image. The values stored in the header are explained above. Note that this
/* mr500_save_header: This function saves the Olympus header to the firmware
* image. The values stored in the header are explained above. Note that this
* will truncate a file. The header is stored in little endian format.
*
*
* Parameters:
* filename: text filename
* header: pointer to header structure to be saved
@ -116,22 +123,22 @@ int mr500_patch_file(char *filename, struct patch_single *patches,
int mr500_save_header(char *filename, struct olympus_header *header) {
int fdo;
int ret=0;
/* Temporary header used for storing the header in little endian. */
struct olympus_header save;
/* Open the file write only and truncate it. If it doesn't exist create. */
fdo = open(filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
if(fdo<0) {
ret=-1;
}
/* Header is stored at offset 0 (Not really needed) */
if(lseek(fdo, 0, SEEK_SET) != 0) {
ret=-1;
}
/* Convert header to Little Endian */
memcpy(&save.magic_name, &header->magic_name, 8*sizeof(int8_t));
save.unknown = htole32(header->unknown);
@ -144,19 +151,19 @@ int mr500_save_header(char *filename, struct olympus_header *header) {
if(write(fdo, (void *) &save, sizeof(save)) < 0) {
ret = -1;
}
/* Close the file and check for errors */
if(close (fdo) < 0) {
ret = -1;
}
return ret;
}
/* mr500_read_header: This function reads the Olympus header and converts it to
* the host endian format. The values stored in the header are explained above.
/* mr500_read_header: This function reads the Olympus header and converts it to
* the host endian format. The values stored in the header are explained above.
* The header is stored in little endian format.
*
*
* Parameters:
* filename: text filename
* header: pointer to header structure to store header read from file
@ -167,43 +174,43 @@ int mr500_save_header(char *filename, struct olympus_header *header) {
int mr500_read_header(char *filename, struct olympus_header *header) {
int fdi;
int ret = 0;
/* Open the file read only */
fdi = open(filename, O_RDONLY);
if(fdi<0) {
ret=-1;
}
/* Header is stored at offset 0 (Not really needed) */
if(lseek(fdi, 0, SEEK_SET) != 0) {
ret=-1;
}
/* Read in the header */
if(read(fdi, (void *) header, sizeof(*header)) < 0) {
ret = -1;
}
/* Convert header to system endian */
header->unknown = le32toh(header->unknown);
header->header_length = le16toh(header->header_length);
header->flags = le16toh(header->flags);
header->unknown_zeros = le32toh(header->unknown_zeros);
header->image_length = le32toh(header->image_length);
/* Close the file and check for errors */
if(close (fdi) < 0) {
ret = -1;
}
return ret;
}
/* mr500_save_crc: This function saves the 'CRC' of the Olympus firmware image.
/* mr500_save_crc: This function saves the 'CRC' of the Olympus firmware image.
* Note that the 'CRC' must be calculated on the decrytped image. It is stored
* in little endian.
*
*
* Parameters:
* filename: text filename
* offset: Offset to store the 'CRC' (header size + data size)
@ -216,39 +223,39 @@ int mr500_save_crc(char *filename, off_t offset, uint32_t *crc_value) {
int fdo;
int ret = 0;
uint32_t save_crc;
/* Open the file write only */
fdo = open(filename, O_WRONLY);
if(fdo<0) {
ret=-1;
}
/* Seek to offset and check for errors */
if(lseek(fdo, offset, SEEK_SET) != offset) {
ret=-1;
}
/* Convert 'CRC' to little endian from system native endian */
save_crc = htole32(*crc_value);
/* Write the 'CRC' and check for errors */
if(write(fdo, (void *) &save_crc, sizeof(unsigned int)) < 0) {
ret = -1;
}
/* Close the file and check for errors */
if(close (fdo) < 0) {
ret = -1;
}
return ret;
}
/* mr500_read_crc: This function reads the 'CRC' of the Olympus firmware image.
/* mr500_read_crc: This function reads the 'CRC' of the Olympus firmware image.
* Note that the 'CRC' is calculated on the decrytped values. It is stored
* in little endian.
*
*
* Parameters:
* filename: text filename
* offset: Offset to read the 'CRC' (header size + data size)
@ -260,39 +267,39 @@ int mr500_save_crc(char *filename, off_t offset, uint32_t *crc_value) {
int mr500_read_crc(char *filename, off_t offset, uint32_t *crc_value) {
int fdi;
int ret = 0;
/* Open the file read only */
fdi = open(filename, O_RDONLY);
if(fdi<0) {
ret = -1;
}
/* Seek to offset and check for errors */
if(lseek(fdi, offset, SEEK_SET) != offset) {
ret=-1;
}
/* Read in the 'CRC' */
if(read(fdi, (void *) crc_value, sizeof(uint32_t)) < 0) {
ret = -1;
}
/* Convert the 'CRC' from little endian to system native format */
*crc_value = le32toh(*crc_value);
/* Close the file and check for errors */
if(close (fdi) < 0) {
ret = -1;
}
return ret;
}
/* mr500_calculate_crc: This function calculates the 'CRC' of the Olympus
* firmware image. Note that the 'CRC' must be calculated on decrytped values.
/* mr500_calculate_crc: This function calculates the 'CRC' of the Olympus
* firmware image. Note that the 'CRC' must be calculated on decrytped values.
* It is stored in little endian.
*
*
* Parameters:
* filename: text filename
* offset: Offset to the start of the data (header size)
@ -302,24 +309,24 @@ int mr500_read_crc(char *filename, off_t offset, uint32_t *crc_value) {
* Returns:
* Returns 0 if there was no error, -1 if there was an error
*/
int mr500_calculate_crc( char *filename, off_t offset, unsigned int length,
int mr500_calculate_crc( char *filename, off_t offset, unsigned int length,
uint32_t *crc_value){
uint32_t temp;
int fdi;
int ret = 0;
/* Open the file read only */
fdi = open(filename, O_RDONLY);
if(fdi<0) {
ret = -1;
}
/* Seek to offset and check for errors */
if(lseek(fdi, offset, SEEK_SET) != offset) {
ret=-1;
}
/* Initialize the crc_value to make sure this starts at 0 */
*crc_value = 0;
/* Run this loop till the entire sum is created */
@ -329,22 +336,22 @@ int mr500_calculate_crc( char *filename, off_t offset, unsigned int length,
ret = -1;
break;
}
/* Keep summing the values */
*crc_value+=temp;
} while (length-=4);
/* Close the file and check for errors */
if(close (fdi) < 0) {
ret = -1;
}
return ret;
}
/* mr500_save_data: This function encypts or decrypts the Olympus firmware
/* mr500_save_data: This function encypts or decrypts the Olympus firmware
* image based on the dictionary passed to it.
*
*
* Parameters:
* source_filename: text filename where data is read from
* dest_filename: text filename where data is written to
@ -361,33 +368,33 @@ int mr500_save_data(
int fdi, fdo;
int ret = 0;
int i;
/* read_count stores the number of bytes actually read */
int read_count;
/* read_request stores the number of bytes to be requested */
int read_request;
/* These two buffers are used for reading data and scrambling or
* descrambling
*/
int8_t buffer_original[16];
int8_t buffer_modified[16];
/* Open input read only, output write only */
fdi = open(source_filename, O_RDONLY);
fdo = open(dest_filename, O_WRONLY);
/* If there was an error loading the files set ret appropriately */
if(fdi<0 || fdo < 0) {
ret = -1;
}
/* Input file: Seek to offset and check for errors */
if(lseek(fdi, offset, SEEK_SET) != offset) {
ret=-1;
}
/* Output file: Seek to offset and check for errors */
if(lseek(fdo, offset, SEEK_SET) != offset) {
ret=-1;
@ -403,10 +410,10 @@ int mr500_save_data(
} else {
read_request = length;
}
/* Read in the data */
read_count = read(fdi, (void *) &buffer_original, read_request);
/* If there was an error set the flag and break */
if(read_count < 0) {
ret = -1;
@ -419,14 +426,14 @@ int mr500_save_data(
/* Handle byte scrambling */
buffer_modified[dictionary[i]] = buffer_original[i];
}
/* write the data: If there was an error set the flag and break */
if(write(fdo, (void *) &buffer_modified, read_count) < 0) {
ret = -1;
break;
}
} while (length -= read_count);
/* Close the files and check for errors */
if(close (fdi) < 0) {
ret = -1;
@ -434,12 +441,12 @@ int mr500_save_data(
if(close (fdo) < 0) {
ret = -1;
}
return ret;
}
/* mr500_init: This function initializes the encryption array
*
*
* Parameters:
* None
*