diff options
Diffstat (limited to 'tools/firmware-utils/src/dgn3500sum.c')
| -rw-r--r-- | tools/firmware-utils/src/dgn3500sum.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/tools/firmware-utils/src/dgn3500sum.c b/tools/firmware-utils/src/dgn3500sum.c deleted file mode 100644 index 6c2937ed51..0000000000 --- a/tools/firmware-utils/src/dgn3500sum.c +++ /dev/null @@ -1,153 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* ************************************************************************** - - This program creates a modified 16bit checksum used for the Netgear - DGN3500 series routers. The difference between this and a standard - checksum is that every 0x100 bytes added 0x100 have to be subtracted - from the sum. - - (C) 2013 Marco Antonio Mauro <marcus90 at gmail.com> - - Based on previous unattributed work. - - ************************************************************************* */ - - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/stat.h> - -unsigned char PidDataWW[70] = -{ - 0x73, 0x45, 0x72, 0x43, 0x6F, 0x4D, 0x6D, 0x00, 0x00, 0x00, 0x00, 0x59, 0x50, 0x35, 0x37, 0x32, - 0x33, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41, 0x00, 0x37, - 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x73, - 0x45, 0x72, 0x43, 0x6F, 0x4D, 0x6D, -} ; - -unsigned char PidDataDE[70] = -{ - 0x73, 0x45, 0x72, 0x43, 0x6F, 0x4D, 0x6D, 0x00, 0x00, 0x00, 0x00, 0x59, 0x50, 0x35, 0x37, 0x32, - 0x34, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0x00, 0x37, - 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x73, - 0x45, 0x72, 0x43, 0x6F, 0x4D, 0x6D, -} ; - -unsigned char PidDataNA[70] = -{ - 0x73, 0x45, 0x72, 0x43, 0x6F, 0x4D, 0x6D, 0x00, 0x00, 0x00, 0x00, 0x59, 0x50, 0x35, 0x37, 0x32, - 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41, 0x00, 0x37, - 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x73, - 0x45, 0x72, 0x43, 0x6F, 0x4D, 0x6D, -} ; - -/* ******************************************************************* - Reads the file into memory and returns pointer to the buffer. */ -static char *readfile(char *filename, int *size) -{ - FILE *fp; - char *buffer; - struct stat info; - - if (stat(filename,&info)!=0) - return NULL; - - if ((fp=fopen(filename,"r"))==NULL) - return NULL; - - buffer=NULL; - for (;;) - { - if ((buffer=(char *)malloc(info.st_size+1))==NULL) - break; - - if (fread(buffer,1,info.st_size,fp)!=info.st_size) - { - free(buffer); - buffer=NULL; - break; - } - - buffer[info.st_size]='\0'; - if(size) *size = info.st_size; - - break; - } - - (void)fclose(fp); - - return buffer; -} - - -/* ******************************************************************* */ -int main(int argc, char** argv) -{ - unsigned long start, i; - char *endptr, *buffer, *p; - int count; // size of file in bytes - unsigned short sum = 0, sum1 = 0; - char sumbuf[8 + 8 + 1]; - - if(argc < 3) { - printf("ERROR: Argument missing!\n\nUsage %s filename starting offset in hex [PID code]\n\n", argv[0]); - return 1; - } - - - FILE *fp = fopen(argv[1], "a"); - if(!fp) { - printf("ERROR: File not writeable!\n"); - return 1; - } - if(argc == 4) - { - printf("%s: PID type: %s\n", argv[0], argv[3]); - if(strcmp(argv[3], "DE")==0) - fwrite(PidDataDE, sizeof(PidDataDE), sizeof(char), fp); /* write DE pid */ - else if(strcmp(argv[3], "NA")==0) - fwrite(PidDataNA, sizeof(PidDataNA), sizeof(char), fp); /* write NA pid */ - else /* if(strcmp(argv[3], "WW")) */ - fwrite(PidDataWW, sizeof(PidDataWW), sizeof(char), fp); /* write WW pid */ - } - else - fwrite(PidDataWW, sizeof(PidDataWW), sizeof(char), fp); /* write WW pid if unspecified */ - - fclose(fp); - - /* Read the file to calculate the checksums */ - buffer = readfile(argv[1], &count); - if(!buffer) { - printf("ERROR: File %s not found!\n", argv[1]); - return 1; - } - - p = buffer; - for(i = 0; i < count; i++) - { - sum += p[i]; - } - - start = strtol(argv[2], &endptr, 16); - p = buffer+start; - for(i = 0; i < count - start; i++) - { - sum1 += p[i]; - } - - sprintf(sumbuf,"%04X%04X",sum1,sum); - /* Append the 2 checksums to end of file */ - fp = fopen(argv[1], "a"); - if(!fp) { - printf("ERROR: File not writeable!\n"); - return 1; - } - fwrite(sumbuf, 8, sizeof(char), fp); - fclose(fp); - free(buffer); - return 0; -} |