src/usr.bin/nc/netcat.c - diff

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version 1.144, 2015/11/23 01:23:56

version 1.145, 2015/12/07 02:38:54

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#include "atomicio.h"

#define PORT_MAX 65535

#define PORT_MAX_LEN 6

#define UNIX_DG_TMP_SOCKET_SIZE 19

#define POLL_STDIN 0

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Line 1288

lo = cp;

}

/* Load ports sequentially. */

for (cp = lo; cp <= hi; cp++) {

* Initialize portlist with a random permutation. Based on

portlist[x] = calloc(1, PORT_MAX_LEN);

* Knuth, as in ip_randomid() in sys/netinet/ip_id.c.

if (portlist[x] == NULL)

err(1, NULL);

snprintf(portlist[x], PORT_MAX_LEN, "%d", cp);

x++;

}

/* Randomly swap ports. */

if (rflag) {

int y;

for (x = 0; x <= hi - lo; x++) {

char *c;

cp = arc4random_uniform(x + 1);

portlist[x] = portlist[cp];

for (x = 0; x <= (hi - lo); x++) {

if (asprintf(&portlist[cp], "%d", x + lo) < 0)

y = (arc4random() & 0xFFFF) % (hi - lo);

err(1, "asprintf");

c = portlist[x];

}

portlist[x] = portlist[y];

} else { /* Load ports sequentially. */

portlist[y] = c;

for (cp = lo; cp <= hi; cp++) {

if (asprintf(&portlist[x], "%d", cp) < 0)

err(1, "asprintf");

x++;

}

} else {