mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-13 10:02:38 +00:00
test/libalias: Tests for outgoing NAT
Testing LibAliasOut functionality. This concentrates the typical use case of initiating data transfers from the inside. Provide a exhaustive test for the data structure in order to check for performance improvements. Reviewed by: kp MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D30335
This commit is contained in:
Lutz Donnerhacke
parent
c82c200622
commit
c1fbb54f4b
@ -3,16 +3,7 @@
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
static int randcmp(const void *a, const void *b) {
|
||||
int res, r = rand();
|
||||
|
||||
(void)a;
|
||||
(void)b;
|
||||
res = (r/4 < RAND_MAX/9) ? 1
|
||||
: (r/5 < RAND_MAX/9) ? 0
|
||||
: -1;
|
||||
return (res);
|
||||
}
|
||||
#include "util.h"
|
||||
|
||||
ATF_TC(2_destroynull);
|
||||
ATF_TC_HEAD(2_destroynull, env)
|
||||
|
||||
381
tests/sys/netinet/libalias/2_natout.c
Normal file
381
tests/sys/netinet/libalias/2_natout.c
Normal file
@ -0,0 +1,381 @@
|
||||
#include <atf-c.h>
|
||||
#include <alias.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "util.h"
|
||||
|
||||
/* common ip ranges */
|
||||
static struct in_addr masq = { htonl(0x01020304) };
|
||||
static struct in_addr pub = { htonl(0x0102dead) };
|
||||
static struct in_addr prv1 = { htonl(0x0a00dead) };
|
||||
static struct in_addr prv2 = { htonl(0xac10dead) };
|
||||
static struct in_addr prv3 = { htonl(0xc0a8dead) };
|
||||
static struct in_addr cgn = { htonl(0x6440dead) };
|
||||
static struct in_addr ext = { htonl(0x12345678) };
|
||||
|
||||
#define NAT_CHECK(pip, src, msq) do { \
|
||||
int res; \
|
||||
int len = ntohs(pip->ip_len); \
|
||||
struct in_addr dst = pip->ip_dst; \
|
||||
pip->ip_src = src; \
|
||||
res = LibAliasOut(la, pip, len); \
|
||||
ATF_CHECK_MSG(res == PKT_ALIAS_OK, \
|
||||
">%d< not met PKT_ALIAS_OK", res); \
|
||||
ATF_CHECK(addr_eq(msq, pip->ip_src)); \
|
||||
ATF_CHECK(addr_eq(dst, pip->ip_dst)); \
|
||||
} while(0)
|
||||
|
||||
#define NAT_FAIL(pip, src, dst) do { \
|
||||
int res; \
|
||||
int len = ntohs(pip->ip_len); \
|
||||
pip->ip_src = src; \
|
||||
pip->ip_dst = dst; \
|
||||
res = LibAliasOut(la, pip, len); \
|
||||
ATF_CHECK_MSG(res != PKT_ALIAS_OK), \
|
||||
">%d< not met !PKT_ALIAS_OK", res); \
|
||||
ATF_CHECK(addr_eq(src, pip->ip_src)); \
|
||||
ATF_CHECK(addr_eq(dst, pip->ip_dst)); \
|
||||
} while(0)
|
||||
|
||||
#define UNNAT_CHECK(pip, src, dst, rel) do { \
|
||||
int res; \
|
||||
int len = ntohs(pip->ip_len); \
|
||||
pip->ip_src = src; \
|
||||
pip->ip_dst = dst; \
|
||||
res = LibAliasIn(la, pip, len); \
|
||||
ATF_CHECK_MSG(res == PKT_ALIAS_OK, \
|
||||
">%d< not met PKT_ALIAS_OK", res); \
|
||||
ATF_CHECK(addr_eq(src, pip->ip_src)); \
|
||||
ATF_CHECK(addr_eq(rel, pip->ip_dst)); \
|
||||
} while(0)
|
||||
|
||||
#define UNNAT_FAIL(pip, src, dst) do { \
|
||||
int res; \
|
||||
int len = ntohs(pip->ip_len); \
|
||||
pip->ip_src = src; \
|
||||
pip->ip_dst = dst; \
|
||||
res = LibAliasIn(la, pip, len); \
|
||||
ATF_CHECK_MSG(res != PKT_ALIAS_OK, \
|
||||
">%d< not met !PKT_ALIAS_OK", res); \
|
||||
ATF_CHECK(addr_eq(src, pip->ip_src)); \
|
||||
ATF_CHECK(addr_eq(dst, pip->ip_dst)); \
|
||||
} while(0)
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(1_simplemasq);
|
||||
ATF_TC_BODY(1_simplemasq, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *pip;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
LibAliasSetMode(la, 0, ~0);
|
||||
|
||||
pip = ip_packet(prv1, ext, 254, 64);
|
||||
NAT_CHECK(pip, prv1, masq);
|
||||
NAT_CHECK(pip, prv2, masq);
|
||||
NAT_CHECK(pip, prv3, masq);
|
||||
NAT_CHECK(pip, cgn, masq);
|
||||
NAT_CHECK(pip, pub, masq);
|
||||
|
||||
free(pip);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(2_unregistered);
|
||||
ATF_TC_BODY(2_unregistered, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *pip;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
LibAliasSetMode(la, PKT_ALIAS_UNREGISTERED_ONLY, ~0);
|
||||
|
||||
pip = ip_packet(prv1, ext, 254, 64);
|
||||
NAT_CHECK(pip, prv1, masq);
|
||||
NAT_CHECK(pip, prv2, masq);
|
||||
NAT_CHECK(pip, prv3, masq);
|
||||
NAT_CHECK(pip, cgn, cgn);
|
||||
NAT_CHECK(pip, pub, pub);
|
||||
|
||||
/*
|
||||
* State is only for new connections
|
||||
* Because they are now active,
|
||||
* the mode setting should be ignored
|
||||
*/
|
||||
LibAliasSetMode(la, 0, PKT_ALIAS_UNREGISTERED_ONLY);
|
||||
NAT_CHECK(pip, prv1, masq);
|
||||
NAT_CHECK(pip, prv2, masq);
|
||||
NAT_CHECK(pip, prv3, masq);
|
||||
NAT_CHECK(pip, cgn, cgn);
|
||||
NAT_CHECK(pip, pub, pub);
|
||||
|
||||
free(pip);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(3_cgn);
|
||||
ATF_TC_BODY(3_cgn, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *pip;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
LibAliasSetMode(la, PKT_ALIAS_UNREGISTERED_CGN, ~0);
|
||||
|
||||
pip = ip_packet(prv1, ext, 254, 64);
|
||||
NAT_CHECK(pip, prv1, masq);
|
||||
NAT_CHECK(pip, prv2, masq);
|
||||
NAT_CHECK(pip, prv3, masq);
|
||||
NAT_CHECK(pip, cgn, masq);
|
||||
NAT_CHECK(pip, pub, pub);
|
||||
|
||||
/*
|
||||
* State is only for new connections
|
||||
* Because they are now active,
|
||||
* the mode setting should be ignored
|
||||
*/
|
||||
LibAliasSetMode(la, 0, PKT_ALIAS_UNREGISTERED_CGN);
|
||||
NAT_CHECK(pip, prv1, masq);
|
||||
NAT_CHECK(pip, prv2, masq);
|
||||
NAT_CHECK(pip, prv3, masq);
|
||||
NAT_CHECK(pip, cgn, masq);
|
||||
NAT_CHECK(pip, pub, pub);
|
||||
|
||||
free(pip);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(4_udp);
|
||||
ATF_TC_BODY(4_udp, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *po, *pi;
|
||||
struct udphdr *ui, *uo;
|
||||
uint16_t sport = 0x1234;
|
||||
uint16_t dport = 0x5678;
|
||||
uint16_t aport;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
LibAliasSetMode(la, 0, ~0);
|
||||
|
||||
/* Query from prv1 */
|
||||
po = ip_packet(prv1, ext, 0, 64);
|
||||
uo = set_udp(po, sport, dport);
|
||||
NAT_CHECK(po, prv1, masq);
|
||||
ATF_CHECK(uo->uh_dport == htons(dport));
|
||||
ATF_CHECK(addr_eq(po->ip_dst, ext));
|
||||
aport = ntohs(uo->uh_sport);
|
||||
/* should use a different external port */
|
||||
ATF_CHECK(aport != sport);
|
||||
|
||||
/* Response */
|
||||
pi = ip_packet(po->ip_dst, po->ip_src, 0, 64);
|
||||
ui = set_udp(pi, ntohs(uo->uh_dport), ntohs(uo->uh_sport));
|
||||
UNNAT_CHECK(pi, ext, masq, prv1);
|
||||
ATF_CHECK(ui->uh_sport == htons(dport));
|
||||
ATF_CHECK(ui->uh_dport == htons(sport));
|
||||
|
||||
/* Query from different source with same ports */
|
||||
uo = set_udp(po, sport, dport);
|
||||
NAT_CHECK(po, prv2, masq);
|
||||
ATF_CHECK(uo->uh_dport == htons(dport));
|
||||
ATF_CHECK(addr_eq(po->ip_dst, ext));
|
||||
/* should use a different external port */
|
||||
ATF_CHECK(uo->uh_sport != htons(aport));
|
||||
|
||||
/* Response to prv2 */
|
||||
ui->uh_dport = uo->uh_sport;
|
||||
UNNAT_CHECK(pi, ext, masq, prv2);
|
||||
ATF_CHECK(ui->uh_sport == htons(dport));
|
||||
ATF_CHECK(ui->uh_dport == htons(sport));
|
||||
|
||||
/* Response to prv1 again */
|
||||
ui->uh_dport = htons(aport);
|
||||
UNNAT_CHECK(pi, ext, masq, prv1);
|
||||
ATF_CHECK(ui->uh_sport == htons(dport));
|
||||
ATF_CHECK(ui->uh_dport == htons(sport));
|
||||
|
||||
free(pi);
|
||||
free(po);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(5_sameport);
|
||||
ATF_TC_BODY(5_sameport, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *p;
|
||||
struct udphdr *u;
|
||||
uint16_t sport = 0x1234;
|
||||
uint16_t dport = 0x5678;
|
||||
uint16_t aport;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
LibAliasSetMode(la, PKT_ALIAS_SAME_PORTS, ~0);
|
||||
|
||||
/* Query from prv1 */
|
||||
p = ip_packet(prv1, ext, 0, 64);
|
||||
u = set_udp(p, sport, dport);
|
||||
NAT_CHECK(p, prv1, masq);
|
||||
ATF_CHECK(u->uh_dport == htons(dport));
|
||||
ATF_CHECK(addr_eq(p->ip_dst, ext));
|
||||
aport = ntohs(u->uh_sport);
|
||||
/* should use the same external port */
|
||||
ATF_CHECK(aport == sport);
|
||||
|
||||
/* Query from different source with same ports */
|
||||
u = set_udp(p, sport, dport);
|
||||
NAT_CHECK(p, prv2, masq);
|
||||
ATF_CHECK(u->uh_dport == htons(dport));
|
||||
ATF_CHECK(addr_eq(p->ip_dst, ext));
|
||||
/* should use a different external port */
|
||||
ATF_CHECK(u->uh_sport != htons(aport));
|
||||
|
||||
free(p);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(6_cleartable);
|
||||
ATF_TC_BODY(6_cleartable, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *po, *pi;
|
||||
struct udphdr *ui, *uo;
|
||||
uint16_t sport = 0x1234;
|
||||
uint16_t dport = 0x5678;
|
||||
uint16_t aport;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
LibAliasSetMode(la, PKT_ALIAS_RESET_ON_ADDR_CHANGE, ~0);
|
||||
LibAliasSetMode(la, PKT_ALIAS_SAME_PORTS, PKT_ALIAS_SAME_PORTS);
|
||||
LibAliasSetMode(la, PKT_ALIAS_DENY_INCOMING, PKT_ALIAS_DENY_INCOMING);
|
||||
|
||||
/* Query from prv1 */
|
||||
po = ip_packet(prv1, ext, 0, 64);
|
||||
uo = set_udp(po, sport, dport);
|
||||
NAT_CHECK(po, prv1, masq);
|
||||
ATF_CHECK(uo->uh_dport == htons(dport));
|
||||
ATF_CHECK(addr_eq(po->ip_dst, ext));
|
||||
aport = ntohs(uo->uh_sport);
|
||||
/* should use the same external port */
|
||||
ATF_CHECK(aport == sport);
|
||||
|
||||
/* Response */
|
||||
pi = ip_packet(po->ip_dst, po->ip_src, 0, 64);
|
||||
ui = set_udp(pi, ntohs(uo->uh_dport), ntohs(uo->uh_sport));
|
||||
UNNAT_CHECK(pi, ext, masq, prv1);
|
||||
ATF_CHECK(ui->uh_sport == htons(dport));
|
||||
ATF_CHECK(ui->uh_dport == htons(sport));
|
||||
|
||||
/* clear table by keeping the address */
|
||||
LibAliasSetAddress(la, ext);
|
||||
LibAliasSetAddress(la, masq);
|
||||
|
||||
/* Response to prv1 again -> DENY_INCOMING */
|
||||
ui->uh_dport = htons(aport);
|
||||
UNNAT_FAIL(pi, ext, masq);
|
||||
|
||||
/* Query from different source with same ports */
|
||||
uo = set_udp(po, sport, dport);
|
||||
NAT_CHECK(po, prv2, masq);
|
||||
ATF_CHECK(uo->uh_dport == htons(dport));
|
||||
ATF_CHECK(addr_eq(po->ip_dst, ext));
|
||||
/* should use the same external port, because it's free */
|
||||
ATF_CHECK(uo->uh_sport == htons(aport));
|
||||
|
||||
/* Response to prv2 */
|
||||
ui->uh_dport = uo->uh_sport;
|
||||
UNNAT_CHECK(pi, ext, masq, prv2);
|
||||
ATF_CHECK(ui->uh_sport == htons(dport));
|
||||
ATF_CHECK(ui->uh_dport == htons(sport));
|
||||
|
||||
free(pi);
|
||||
free(po);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(7_stress);
|
||||
ATF_TC_BODY(7_stress, dummy)
|
||||
{
|
||||
struct libalias *la = LibAliasInit(NULL);
|
||||
struct ip *p;
|
||||
struct udphdr *u;
|
||||
struct {
|
||||
struct in_addr src, dst;
|
||||
uint16_t sport, dport, aport;
|
||||
} *batch;
|
||||
size_t const batch_size = 12000;
|
||||
size_t const rounds = 25;
|
||||
size_t i, j;
|
||||
|
||||
ATF_REQUIRE(la != NULL);
|
||||
LibAliasSetAddress(la, masq);
|
||||
|
||||
p = ip_packet(prv1, ext, 0, 64);
|
||||
u = set_udp(p, 0, 0);
|
||||
|
||||
batch = calloc(batch_size, sizeof(*batch));
|
||||
ATF_REQUIRE(batch != NULL);
|
||||
for (j = 0; j < rounds; j++) {
|
||||
for (i = 0; i < batch_size; i++) {
|
||||
struct in_addr s, d;
|
||||
switch (i&3) {
|
||||
case 0: s = prv1; d = ext; break;
|
||||
case 1: s = prv2; d = pub; break;
|
||||
case 2: s = prv3; d = ext; break;
|
||||
case 3: s = cgn; d = pub; break;
|
||||
}
|
||||
s.s_addr &= htonl(0xffff0000);
|
||||
d.s_addr &= htonl(0xffff0000);
|
||||
batch[i].src.s_addr = s.s_addr | htonl(rand_range(0, 0xffff));
|
||||
batch[i].dst.s_addr = d.s_addr | htonl(rand_range(0, 0xffff));
|
||||
batch[i].sport = rand_range(1000, 60000);
|
||||
batch[i].dport = rand_range(1000, 60000);
|
||||
}
|
||||
|
||||
for (i = 0; i < batch_size; i++) {
|
||||
p->ip_dst = batch[i].dst;
|
||||
u = set_udp(p, batch[i].sport, batch[i].dport);
|
||||
NAT_CHECK(p, batch[i].src, masq);
|
||||
ATF_CHECK(u->uh_dport == htons(batch[i].dport));
|
||||
ATF_CHECK(addr_eq(p->ip_dst, batch[i].dst));
|
||||
batch[i].aport = htons(u->uh_sport);
|
||||
}
|
||||
|
||||
qsort(batch, batch_size, sizeof(*batch), randcmp);
|
||||
|
||||
for (i = 0; i < batch_size; i++) {
|
||||
u = set_udp(p, batch[i].dport, batch[i].aport);
|
||||
UNNAT_CHECK(p, batch[i].dst, masq, batch[i].src);
|
||||
ATF_CHECK(u->uh_dport == htons(batch[i].sport));
|
||||
ATF_CHECK(u->uh_sport == htons(batch[i].dport));
|
||||
}
|
||||
}
|
||||
|
||||
free(batch);
|
||||
free(p);
|
||||
LibAliasUninit(la);
|
||||
}
|
||||
|
||||
ATF_TP_ADD_TCS(natout)
|
||||
{
|
||||
/* Use "dd if=/dev/random bs=2 count=1 | od -x" to reproduce */
|
||||
srand(0x0b61);
|
||||
|
||||
ATF_TP_ADD_TC(natout, 1_simplemasq);
|
||||
ATF_TP_ADD_TC(natout, 2_unregistered);
|
||||
ATF_TP_ADD_TC(natout, 3_cgn);
|
||||
ATF_TP_ADD_TC(natout, 4_udp);
|
||||
ATF_TP_ADD_TC(natout, 5_sameport);
|
||||
ATF_TP_ADD_TC(natout, 6_cleartable);
|
||||
ATF_TP_ADD_TC(natout, 7_stress);
|
||||
|
||||
return atf_no_error();
|
||||
}
|
||||
@ -1,16 +1,18 @@
|
||||
# $FreeBSD$
|
||||
|
||||
.include <bsd.own.mk>
|
||||
|
||||
PACKAGE= tests
|
||||
|
||||
TESTSDIR= ${TESTSBASE}/sys/netinet/libalias
|
||||
BINDIR= ${TESTSDIR}
|
||||
|
||||
ATF_TESTS_C+= 1_instance
|
||||
ATF_TESTS_C+= 1_instance \
|
||||
2_natout \
|
||||
|
||||
LIBADD+= alias
|
||||
|
||||
SRCS.1_instance=1_instance.c util.c
|
||||
SRCS.2_natout= 2_natout.c util.c
|
||||
|
||||
.include <bsd.test.mk>
|
||||
|
||||
#
|
||||
|
||||
74
tests/sys/netinet/libalias/util.c
Normal file
74
tests/sys/netinet/libalias/util.c
Normal file
@ -0,0 +1,74 @@
|
||||
#include <atf-c.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include <netinet/in.h>
|
||||
|
||||
#include "util.h"
|
||||
|
||||
int
|
||||
randcmp(const void *a, const void *b)
|
||||
{
|
||||
int res, r = rand();
|
||||
|
||||
(void)a;
|
||||
(void)b;
|
||||
res = (r/4 < RAND_MAX/9) ? 1
|
||||
: (r/5 < RAND_MAX/9) ? 0
|
||||
: -1;
|
||||
return (res);
|
||||
}
|
||||
|
||||
void
|
||||
hexdump(void *p, size_t len)
|
||||
{
|
||||
size_t i;
|
||||
unsigned char *c = p;
|
||||
|
||||
for (i = 0; i < len; i++) {
|
||||
printf(" %02x", c[i]);
|
||||
switch (i & 0xf) {
|
||||
case 0xf: printf("\n"); break;
|
||||
case 0x7: printf(" "); break;
|
||||
default: break;
|
||||
}
|
||||
}
|
||||
if ((i & 0xf) != 0x0)
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
struct ip *
|
||||
ip_packet(struct in_addr src, struct in_addr dst, u_char protocol, size_t len)
|
||||
{
|
||||
struct ip * p;
|
||||
|
||||
ATF_REQUIRE(len >= 64 && len <= IP_MAXPACKET);
|
||||
|
||||
p = calloc(1, len);
|
||||
ATF_REQUIRE(p != NULL);
|
||||
|
||||
p->ip_v = IPVERSION;
|
||||
p->ip_hl = sizeof(*p)/4;
|
||||
p->ip_len = htons(len);
|
||||
p->ip_ttl = IPDEFTTL;
|
||||
p->ip_src = src;
|
||||
p->ip_dst = dst;
|
||||
p->ip_p = protocol;
|
||||
ATF_REQUIRE(p->ip_hl == 5);
|
||||
|
||||
return (p);
|
||||
}
|
||||
|
||||
struct udphdr *
|
||||
set_udp(struct ip *p, u_short sport, u_short dport) {
|
||||
uint32_t *up = (void *)p;
|
||||
struct udphdr *u = (void *)&(up[p->ip_hl]);
|
||||
int payload = ntohs(p->ip_len) - 4*p->ip_hl;
|
||||
|
||||
ATF_REQUIRE(payload >= (int)sizeof(*u));
|
||||
p->ip_p = IPPROTO_UDP;
|
||||
u->uh_sport = htons(sport);
|
||||
u->uh_dport = htons(dport);
|
||||
u->uh_ulen = htons(payload);
|
||||
return (u);
|
||||
}
|
||||
29
tests/sys/netinet/libalias/util.h
Normal file
29
tests/sys/netinet/libalias/util.h
Normal file
@ -0,0 +1,29 @@
|
||||
#include <sys/types.h>
|
||||
|
||||
#include <arpa/inet.h>
|
||||
#include <netinet/ip.h>
|
||||
#include <netinet/udp.h>
|
||||
|
||||
#ifndef _UTIL_H
|
||||
#define _UTIL_H
|
||||
|
||||
int randcmp(const void *a, const void *b);
|
||||
void hexdump(void *p, size_t len);
|
||||
struct ip * ip_packet(struct in_addr src, struct in_addr dst, u_char protocol, size_t len);
|
||||
struct udphdr * set_udp(struct ip *p, u_short sport, u_short dport);
|
||||
|
||||
inline int
|
||||
addr_eq(struct in_addr a, struct in_addr b)
|
||||
{
|
||||
return a.s_addr == b.s_addr;
|
||||
}
|
||||
|
||||
#define a2h(a) ntohl(a.s_addr)
|
||||
|
||||
inline int
|
||||
rand_range(int min, int max)
|
||||
{
|
||||
return min + rand()%(max - min);
|
||||
}
|
||||
|
||||
#endif /* _UTIL_H */
|
||||
Loading…
Reference in New Issue
Block a user