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//
// main.c
// H64E-2
//
// Created by dianshi on 3/13/20.
// Copyright © 2020 dianshi. All rights reserved.
//
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <getopt.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include "h64e.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int file_open( const char *fname )
{
int fd;
fd = open( fname, O_RDONLY );
if ( fd == -1 )
{
printf("Couldn open file %s\n", fname);
return -1;
}
return fd;
}
int file_read( int fd, char *buf, int size )
{
int ret;
if ( size < 1 )
return -1;
ret = (int)read( fd, buf, size );
return ret;
}
int file_seek( int fd, off_t pos )
{
off_t rc;
if (fd<1)
{
return -1;
}
rc = lseek( fd, pos, SEEK_SET );
if (rc == -1)
return -1;
return 0;
}
int file_close( int fd )
{
close( fd );
return 0;
}
int group_name2int( char *name )
{
if ( 0 == strncmp( name, "byte", 4 ) )
{
return H64E_G_BYTE;
}
if ( 0 == strncmp( name, "word", 4 ) )
{
return H64E_G_WORD;
}
if ( 0 == strncmp( name, "dword", 5 ) )
{
return H64E_G_DWORD;
}
if ( 0 == strncmp( name, "qword", 5 ) )
{
return H64E_G_QWORD;
}
return 1;
}
int output_name2int( char *name )
{
if ( 0 == strncmp( name, "str", 3) )
{
return H64E_O_STRING;
}
if ( 0 == strncmp( name, "i8", 2) )
{
return H64E_O_INT8;
}
if ( 0 == strncmp( name, "u8", 2) )
{
return H64E_O_UINT8;
}
if ( 0 == strncmp( name, "i16", 3) )
{
return H64E_O_INT16;
}
if ( 0 == strncmp( name, "u16", 3) )
{
return H64E_O_UINT16;
}
if ( 0 == strncmp( name, "i32", 3) )
{
return H64E_O_INT32;
}
if ( 0 == strncmp( name, "u32", 3) )
{
return H64E_O_UINT32;
}
if ( 0 == strncmp( name, "i64", 3) )
{
return H64E_O_INT64;
}
if ( 0 == strncmp( name, "u64", 3) )
{
return H64E_O_UINT64;
}
return 0;
}
void helper( char *progname )
{
printf("Usage: %s [OPTS] <filename>\n\n"
" -a - asciimode\n"
" -b - show offset adress\n"
" -o - file offset\n"
" -i - output hex\n"
" -l - length of output\n"
" -c - column size in byts\n"
" -g - datatype output: byte,word,dword\n"
" -e - interp data: u8,i8,u16,i16,u32,i32,u64,i64"
"\nVersion: 0.1 \n"
"\n"
, progname);
}
void version()
{
printf("???\n");
}
int main(int argc, const char * argv[]) {
// insert code here...
int c;
int param_length = -1;
int param_offset = -1;
char *fname = NULL;
int fd;
int in_bytes = 0;
uint8_t buf[128];
printf("H64E-2 Project started 1\n");
//initialise structure
H64E_t h64e;
H64E_stream_in sin;
H64E_stream_out sout;
h64e_init(&h64e);
h64e_si_init(&sin, 128);
h64e_so_init(&sout, 128);
h64e_set_input(&h64e, &sin);
h64e_set_output(&h64e, &sout);
//set all params from arguments
/*get cmd args and set options */
while ( (c = getopt(argc, argv, "abo:il:vc:g:e:")) != -1 )
{
switch(c)
{
case 'a':
h64e.fmt.group = H64E_G_BYTE;
h64e.fmt.flag_output = 1;
h64e.fmt.output_type = H64E_O_STRING;
break;
case 'b':
h64e.fmt.flag_offset = 1;
break;
case 'o':
param_offset = atoi( optarg );
break;
case 'i':
h64e.fmt.group = H64E_G_BYTE;
h64e.fmt.flag_output = 0;
h64e.fmt.flag_offset = 1;
break;
case 'l':
param_length = atoi( optarg );
break;
case 'c':
h64e.fmt.column_size = atoi(optarg);
break;
case 'g':
h64e.fmt.group = group_name2int(optarg);
break;
case 'e':
h64e.fmt.flag_output = 1;
h64e.fmt.output_type = output_name2int(optarg);
break;
case 'v':
version();
exit(1);
break;
default:
helper( argv[0] );
exit(1);
}
}
if ( argc < 2 )
{
printf("At least one argument needed now\n");
helper( argv[0] );
return 1;
}
/* last argument is file name */
fname = argv[argc-1];
/* check params */
h64e_check_param( &h64e );
/* open file */
fd = file_open( fname );
if ( fd == -1 )
{
printf("Cannot open file %s\n", fname);
return -1;
}
//register formats
//do conversation, reading input and outputing
while ((in_bytes = file_read(fd,(char *)&buf,128)) != -1)
{
printf("Reading %d bytes\n",in_bytes);
}
//deinit all structures
h64e_destroy(&h64e);
file_close(fd);
printf("Ending Execution\n");
return 0;
}
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