107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
#include "main-readrange.h"
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#include "masscan.h"
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#include <assert.h>
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/***************************************************************************
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***************************************************************************/
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/*static unsigned
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count_cidr_bits(struct Range range)
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{
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unsigned i;
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for (i=0; i<32; i++) {
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unsigned mask = 0xFFFFFFFF >> i;
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if ((range.begin & ~mask) == (range.end & ~mask)) {
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if ((range.begin & mask) == 0 && (range.end & mask) == mask)
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return i;
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}
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}
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return 0;
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}*/
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/***************************************************************************
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***************************************************************************/
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static unsigned
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count_cidr6_bits(struct Range6 range)
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{
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uint64_t i;
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/* Kludge: can't handle more than 64-bits of CIDR ranges */
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if (range.begin.hi != range.begin.lo)
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return 0;
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for (i=0; i<64; i++) {
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uint64_t mask = 0xFFFFFFFFffffffffull >> i;
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if ((range.begin.lo & ~mask) == (range.end.lo & ~mask)) {
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if ((range.begin.lo & mask) == 0 && (range.end.lo & mask) == mask)
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return (unsigned)i;
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}
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}
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return 0;
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}
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/***************************************************************************
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***************************************************************************/
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void
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main_readrange(struct Masscan *masscan)
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{
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struct RangeList *list4 = &masscan->targets.ipv4;
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struct Range6List *list6 = &masscan->targets.ipv6;
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unsigned i;
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FILE *fp = stdout;
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for (i=0; i<list4->count; i++) {
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unsigned prefix_length;
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struct Range range = list4->list[i];
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if (range.begin == range.end) {
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fprintf(fp, "%u.%u.%u.%u\n",
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(range.begin>>24)&0xFF,
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(range.begin>>16)&0xFF,
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(range.begin>> 8)&0xFF,
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(range.begin>> 0)&0xFF
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);
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} else if (range_is_cidr(range, &prefix_length)) {
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fprintf(fp, "%u.%u.%u.%u/%u\n",
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(range.begin>>24)&0xFF,
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(range.begin>>16)&0xFF,
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(range.begin>> 8)&0xFF,
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(range.begin>> 0)&0xFF,
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prefix_length
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);
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} else {
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fprintf(fp, "%u.%u.%u.%u-%u.%u.%u.%u\n",
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(range.begin>>24)&0xFF,
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(range.begin>>16)&0xFF,
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(range.begin>> 8)&0xFF,
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(range.begin>> 0)&0xFF,
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(range.end>>24)&0xFF,
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(range.end>>16)&0xFF,
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(range.end>> 8)&0xFF,
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(range.end>> 0)&0xFF
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);
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}
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}
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for (i=0; i<list6->count; i++) {
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struct Range6 range = list6->list[i];
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ipaddress_formatted_t fmt = ipv6address_fmt(range.begin);
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fprintf(fp, "%s", fmt.string);
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if (!ipv6address_is_equal(range.begin, range.end)) {
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unsigned cidr_bits = count_cidr6_bits(range);
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if (cidr_bits) {
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fprintf(fp, "/%u", cidr_bits);
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} else {
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fmt = ipv6address_fmt(range.end);
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fprintf(fp, "-%s", fmt.string);
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}
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}
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fprintf(fp, "\n");
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}
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}
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