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/* (Platform independant) IP lister (c)2000-1 Craig Cheetham
* Released under the GNU Licence. - Spread the source, not
* the binaries! (ahem fixed)
*
* E-Mail: craig_cheetham@yahoo.co.uk
*
*/
#include <stdio.h>
#include <string.h>
#include <netinet/in.h>
union ipaddy
{
unsigned char c_num[4];
unsigned long l_num;
};
int parse(char *string, char *dest)
{
int i = 0;
unsigned long num;
char *p = string, *n;
strtok(p,".");
while(p && i<4) {
if((num = atol(p)) > 255) return 1;
dest[i++] = num;
p = strtok(0,".");
}
return 0;
}
int main (int argc, char **argv)
{
union ipaddy source, dest;
if(argc < 3) {
printf("Platform independant IP lister, by Craig Cheetham (c)2000-1\n");
printf("===========================================================\n\n");
printf("Usage: %s <start ip> <end ip>\n\n", argv[0]);
printf("Examples:\n");
printf("\t\t%s 205 206\t\t\t# Class A scan\n", argv[0]);
printf("\t\t%s 205.214 205.215\t\t# Class B scan\n", argv[0]);
printf("\t\t%s 205.214.14 205.214.56\t# Class C scan\n", argv[0]);
exit(0);
}
source.l_num = dest.l_num = 0;
if(parse(argv[1], source.c_num)) {
fprintf(stderr, "Error: Source IP is jarg.\n");
return 0;
}
if(parse(argv[2], dest.c_num)) {
fprintf(stderr, "Error: Dest IP is jarg.\n");
return 0;
}
while(htonl(source.l_num) < htonl(dest.l_num)) {
if ((source.c_num[3]!=0) && (source.c_num[3]!=255))
printf("%u.%u.%u.%u\n",
source.c_num[0],
source.c_num[1],
source.c_num[2],
source.c_num[3]);
source.l_num = htonl(htonl(source.l_num)+1);
}
return 0;
}
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