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[/] [amber/] [trunk/] [sw/] [tools/] [amber-pkt2mem.c] - Rev 64
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/*---------------------------------------------------------------- // // // amber-bin2mem.c // // // // This file is part of the Amber project // // http://www.opencores.org/project,amber // // // // Description // // Read in a binary file from tcpdump and write it out in // // in Verilog readmem format. // // // // Author(s): // // - Conor Santifort, csantifort.amber@gmail.com // // // ////////////////////////////////////////////////////////////////// // // // Copyright (C) 2010 Authors and OPENCORES.ORG // // // // This source file may be used and distributed without // // restriction provided that this copyright statement is not // // removed from the file and that any derivative work contains // // the original copyright notice and the associated disclaimer. // // // // This source file is free software; you can redistribute it // // and/or modify it under the terms of the GNU Lesser General // // Public License as published by the Free Software Foundation; // // either version 2.1 of the License, or (at your option) any // // later version. // // // // This source is distributed in the hope that it will be // // useful, but WITHOUT ANY WARRANTY; without even the implied // // warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR // // PURPOSE. See the GNU Lesser General Public License for more // // details. // // // // You should have received a copy of the GNU Lesser General // // Public License along with this source; if not, download it // // from http://www.opencores.org/lgpl.shtml // // // ----------------------------------------------------------------*/ #include <stdio.h> #include <stdlib.h> #include "../boot-loader/boot-loader.h" /* Function prototypes */ int fsize(FILE *f); int conv_hstring(char*, unsigned int*); unsigned int buf_uint (unsigned char *buf); int main(int argc,char *argv[]) { FILE *infile; char filename_mem[80], filename_nopath[80]; unsigned char *buf; FILE *file_mem; int infile_size, buf_size, i, j; int ret; int buf_pos; unsigned int incl_len; unsigned int orig_len; int mem_pos = 0; if (argc<2){ fprintf(stderr, "ERROR: no input file specified. Quitting\n"); exit(1); } infile=fopen(argv[1],"rb"); if(infile==NULL) { fprintf(stderr, "ERROR: Can't open %s. Quitting\n", argv[1]); exit(1); } infile_size = fsize(infile); buf=(unsigned char*)malloc(infile_size); buf_size=fread(buf,1,infile_size,infile); fclose(infile); if ( buf_size != infile_size ) { fprintf(stderr, "%s ERROR: Input %s file length is %d bytes long, buffer read buf_size %d\n", argv[0], argv[1], infile_size, buf_size); exit(1); } if ( infile_size > 0x1000000 ) { fprintf(stderr, "%s WARNING: Input %s file length is %d bytes long, greater than boot-loader can handle \n", argv[0], argv[1], infile_size); } /* Start of file */ buf_pos = 6*4; /* Main loop. once per packet */ while (buf_pos < infile_size) { buf_pos=buf_pos+8; incl_len = buf_uint(&buf[buf_pos]); buf_pos+=4; orig_len = buf_uint(&buf[buf_pos]); buf_pos+=4; /* error check included packet length */ if (incl_len != orig_len) { fprintf(stderr, "Warning: the full packet was not captured in the tcpdump file\n"); fprintf(stderr, "incl_len %d != orig_len %d\n", incl_len, orig_len); //goto error_return; } /* error check max packet length */ if (orig_len > 255) { fprintf(stderr, "Error: the packet is too long. Max length is 255 bytes\n"); fprintf(stderr, "orig_len %d\n", orig_len); goto error_return; } /* check if full packet is contained in file */ if (buf_pos + incl_len > infile_size) { fprintf(stderr, "Error: end of current packet is after the end of the buffer\n"); goto error_return; } printf("// incl_len %d, orig_len %d\n", incl_len, orig_len); printf("// ip-sa %d.%d.%d.%d, ip-da %d.%d.%d.%d, protocol %d\n", buf[buf_pos+26], buf[buf_pos+27], buf[buf_pos+28], buf[buf_pos+29], buf[buf_pos+30], buf[buf_pos+31], buf[buf_pos+32], buf[buf_pos+33], buf[buf_pos+23] ); /* First byte gives the packet length */ printf("@%04x %02x\n", mem_pos++, orig_len); for (i=buf_pos;i<buf_pos+incl_len;i++,mem_pos++) { printf("@%04x %02x\n", mem_pos, buf[i]); } /* pad out any missing bytes */ if (orig_len > incl_len) { for (i=incl_len;i<orig_len;i++,mem_pos++) { printf("@%04x 00\n", mem_pos); } } /* advance to the start of the next entry */ buf_pos += incl_len; } free(buf); return 0; error_return: free(buf); return 1; } unsigned int buf_uint (unsigned char *buf) { return buf[3]<<24 | buf[2]<<16 | buf[1]<<8 | buf[0]; } /* Return the buf_size of a file in bytes */ int fsize( FILE *f ) { int end; /* Set current position at end of file */ fseek( f, 0, SEEK_END ); /* File buf_size in bytes */ end = ftell( f ); /* Set current position at start of file */ fseek( f, 0, SEEK_SET ); return end; } int conv_hstring ( char *string, unsigned int * num) { int pos = 0; *num = 0; while (((string[pos] >= '0' && string[pos] <= '9') || (string[pos] >= 'a' && string[pos] <= 'f')) && pos < 9) { if (string[pos] >= '0' && string[pos] <= '9') *num = (*num << 4) + ( string[pos++] - '0' ); else *num = (*num << 4) + ( string[pos++] - 'a' ) + 10; } return pos; }
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