#include "config.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <netinet/in.h>
#ifndef HAVE_NETINET6_IPSEC
#include <netinet/ipsec.h>
#else
#include <netinet6/ipsec.h>
#endif
#if defined(INET6) && !defined(INET6_ADVAPI) && \
defined(IP_RECVDSTADDR) && !defined(IPV6_RECVDSTADDR)
#define IPV6_RECVDSTADDR IP_RECVDSTADDR
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <fcntl.h>
#include "var.h"
#include "misc.h"
#include "plog.h"
#include "sockmisc.h"
#include "debug.h"
#include "gcmalloc.h"
#include "libpfkey.h"
#ifndef IP_IPSEC_POLICY
#define IP_IPSEC_POLICY 16
#endif
#ifndef IPV6_IPSEC_POLICY
#define IPV6_IPSEC_POLICY 34 "Tom Lendacky" <toml@us.ibm.com> */
#endif
const int niflags = 0;
int
cmpsaddrwop(addr1, addr2)
const struct sockaddr_storage *addr1;
const struct sockaddr_storage *addr2;
{
caddr_t sa1, sa2;
if (addr1 == 0 && addr2 == 0)
return 0;
if (addr1 == 0 || addr2 == 0)
return 1;
if (addr1->ss_len != addr2->ss_len
|| addr1->ss_family != addr2->ss_family)
return 1;
switch (addr1->ss_family) {
case AF_INET:
sa1 = (caddr_t)&((struct sockaddr_in *)addr1)->sin_addr;
sa2 = (caddr_t)&((struct sockaddr_in *)addr2)->sin_addr;
if (memcmp(sa1, sa2, sizeof(struct in_addr)) != 0)
return 1;
break;
#ifdef INET6
case AF_INET6:
sa1 = (caddr_t)&((struct sockaddr_in6 *)addr1)->sin6_addr;
sa2 = (caddr_t)&((struct sockaddr_in6 *)addr2)->sin6_addr;
if (memcmp(sa1, sa2, sizeof(struct in6_addr)) != 0)
return 1;
if (((struct sockaddr_in6 *)addr1)->sin6_scope_id !=
((struct sockaddr_in6 *)addr2)->sin6_scope_id)
return 1;
break;
#endif
default:
return 1;
}
return 0;
}
int
cmpsaddrwop_withprefix(const struct sockaddr_storage *addr1, const struct sockaddr_storage *addr2, int prefix)
{
u_int32_t mask;
int i;
if (addr1 == 0 && addr2 == 0)
return 0;
if (addr1 == 0 || addr2 == 0)
return 1;
if (addr1->ss_len != addr2->ss_len
|| addr1->ss_family != addr2->ss_family)
return 1;
switch (addr1->ss_family) {
case AF_INET:
mask = ~0;
mask <<= 32-prefix;
if ((((struct sockaddr_in *)addr1)->sin_addr.s_addr & htonl(mask)) !=
(((struct sockaddr_in *)addr2)->sin_addr.s_addr & htonl(mask)))
return 1;
break;
#ifdef INET6
case AF_INET6:
for (i = 0; i < 4; i++) {
if (prefix >= 32) {
mask = ~0;
prefix -= 32;
} else if (prefix == 0)
mask = 0;
else {
mask = ~0;
mask <<= 32-prefix;
prefix = 0;
}
if ((((struct sockaddr_in6 *)addr1)->sin6_addr.__u6_addr.__u6_addr32[i] & htonl(mask)) !=
(((struct sockaddr_in6 *)addr2)->sin6_addr.__u6_addr.__u6_addr32[i] & htonl(mask)))
return 1;
}
if (((struct sockaddr_in6 *)addr1)->sin6_scope_id !=
((struct sockaddr_in6 *)addr2)->sin6_scope_id)
return 1;
break;
#endif
default:
return 1;
}
return 0;
}
int
cmpsaddrwild(addr1, addr2)
const struct sockaddr_storage *addr1;
const struct sockaddr_storage *addr2;
{
caddr_t sa1, sa2;
u_short port1, port2;
if (addr1 == 0 && addr2 == 0)
return 0;
if (addr1 == 0 || addr2 == 0)
return 1;
if (addr1->ss_len != addr2->ss_len
|| addr1->ss_family != addr2->ss_family)
return 1;
switch (addr1->ss_family) {
case AF_INET:
sa1 = (caddr_t)&((struct sockaddr_in *)addr1)->sin_addr;
sa2 = (caddr_t)&((struct sockaddr_in *)addr2)->sin_addr;
port1 = ((struct sockaddr_in *)addr1)->sin_port;
port2 = ((struct sockaddr_in *)addr2)->sin_port;
if (!(port1 == IPSEC_PORT_ANY ||
port2 == IPSEC_PORT_ANY ||
port1 == port2))
return 1;
if (memcmp(sa1, sa2, sizeof(struct in_addr)) != 0)
return 1;
break;
#ifdef INET6
case AF_INET6:
sa1 = (caddr_t)&((struct sockaddr_in6 *)addr1)->sin6_addr;
sa2 = (caddr_t)&((struct sockaddr_in6 *)addr2)->sin6_addr;
port1 = ((struct sockaddr_in6 *)addr1)->sin6_port;
port2 = ((struct sockaddr_in6 *)addr2)->sin6_port;
if (!(port1 == IPSEC_PORT_ANY ||
port2 == IPSEC_PORT_ANY ||
port1 == port2))
return 1;
if (memcmp(sa1, sa2, sizeof(struct in6_addr)) != 0)
return 1;
if (((struct sockaddr_in6 *)addr1)->sin6_scope_id !=
((struct sockaddr_in6 *)addr2)->sin6_scope_id)
return 1;
break;
#endif
default:
return 1;
}
return 0;
}
int
cmpsaddrstrict(const struct sockaddr_storage *addr1, const struct sockaddr_storage *addr2)
{
caddr_t sa1, sa2;
u_short port1, port2;
if (addr1 == 0 && addr2 == 0)
return 0;
if (addr1 == 0 || addr2 == 0)
return 1;
if (addr1->ss_len != addr2->ss_len
|| addr1->ss_family != addr2->ss_family)
return 1;
switch (addr1->ss_family) {
case AF_INET:
sa1 = (caddr_t)&((struct sockaddr_in *)addr1)->sin_addr;
sa2 = (caddr_t)&((struct sockaddr_in *)addr2)->sin_addr;
port1 = ((struct sockaddr_in *)addr1)->sin_port;
port2 = ((struct sockaddr_in *)addr2)->sin_port;
if (port1 != port2)
return 1;
if (memcmp(sa1, sa2, sizeof(struct in_addr)) != 0)
return 1;
break;
#ifdef INET6
case AF_INET6:
sa1 = (caddr_t)&((struct sockaddr_in6 *)addr1)->sin6_addr;
sa2 = (caddr_t)&((struct sockaddr_in6 *)addr2)->sin6_addr;
port1 = ((struct sockaddr_in6 *)addr1)->sin6_port;
port2 = ((struct sockaddr_in6 *)addr2)->sin6_port;
if (port1 != port2)
return 1;
if (memcmp(sa1, sa2, sizeof(struct in6_addr)) != 0)
return 1;
if (((struct sockaddr_in6 *)addr1)->sin6_scope_id !=
((struct sockaddr_in6 *)addr2)->sin6_scope_id)
return 1;
break;
#endif
default:
return 1;
}
return 0;
}
int
cmpsaddrstrict_withprefix(const struct sockaddr_storage *addr1, const struct sockaddr_storage *addr2, int prefix)
{
u_short port1, port2;
u_int32_t mask;
int i;
if (addr1 == 0 && addr2 == 0)
return 0;
if (addr1 == 0 || addr2 == 0)
return 1;
if (addr1->ss_len != addr2->ss_len
|| addr1->ss_family != addr2->ss_family)
return 1;
switch (addr1->ss_family) {
case AF_INET:
port1 = ((struct sockaddr_in *)addr1)->sin_port;
port2 = ((struct sockaddr_in *)addr2)->sin_port;
if (port1 != port2)
return 1;
mask = ~0;
mask <<= 32-prefix;
if ((((struct sockaddr_in *)addr1)->sin_addr.s_addr & htonl(mask)) !=
(((struct sockaddr_in *)addr2)->sin_addr.s_addr & htonl(mask)))
return 1;
break;
#ifdef INET6
case AF_INET6:
port1 = ((struct sockaddr_in6 *)addr1)->sin6_port;
port2 = ((struct sockaddr_in6 *)addr2)->sin6_port;
if (port1 != port2)
return 1;
for (i = 0; i < 4; i++) {
if (prefix >= 32) {
mask = ~0;
prefix -= 32;
} else if (prefix == 0)
mask = 0;
else {
mask = ~0;
mask <<= 32-prefix;
prefix = 0;
}
if ((((struct sockaddr_in6 *)addr1)->sin6_addr.__u6_addr.__u6_addr32[i] & htonl(mask)) !=
(((struct sockaddr_in6 *)addr2)->sin6_addr.__u6_addr.__u6_addr32[i] & htonl(mask)))
return 1;
}
if (((struct sockaddr_in6 *)addr1)->sin6_scope_id !=
((struct sockaddr_in6 *)addr2)->sin6_scope_id)
return 1;
break;
#endif
default:
return 1;
}
return 0;
}
struct sockaddr_storage *
getlocaladdr(struct sockaddr *remote)
{
struct sockaddr_storage *local;
u_int local_len = sizeof(struct sockaddr_storage);
int s;
if ((local = racoon_calloc(1, local_len)) == NULL) {
plog(ASL_LEVEL_ERR,
"failed to get address buffer.\n");
goto err;
}
if ((s = socket(remote->sa_family, SOCK_DGRAM, 0)) < 0) {
plog(ASL_LEVEL_ERR,
"socket (%s)\n", strerror(errno));
goto err;
}
if (fcntl(s, F_SETFL, O_NONBLOCK) == -1) {
plog(ASL_LEVEL_ERR, "failed to put localaddr socket in non-blocking mode\n");
}
setsockopt_bypass(s, remote->sa_family);
if (connect(s, remote, sysdep_sa_len(remote)) < 0) {
plog(ASL_LEVEL_ERR,
"connect (%s)\n", strerror(errno));
close(s);
goto err;
}
if (getsockname(s, (struct sockaddr *)local, &local_len) < 0) {
plog(ASL_LEVEL_ERR,
"getsockname (%s)\n", strerror(errno));
close(s);
return NULL;
}
close(s);
return local;
err:
if (local != NULL)
racoon_free(local);
return NULL;
}
int
recvfromto(int s,
void *buf,
size_t buflen,
int flags,
struct sockaddr_storage *from,
socklen_t *fromlen,
struct sockaddr_storage *to,
u_int *tolen)
{
int otolen;
ssize_t len;
struct sockaddr_storage ss;
struct msghdr m;
struct cmsghdr *cm, *cm_prev;
struct iovec iov[2];
u_int32_t cmsgbuf[256/sizeof(u_int32_t)]; #if defined(INET6) && defined(INET6_ADVAPI)
struct in6_pktinfo *pi;
#endif
struct sockaddr_in *sin;
#ifdef INET6
struct sockaddr_in6 *sin6;
#endif
len = sizeof(ss);
if (getsockname(s, (struct sockaddr *)&ss, (socklen_t*)&len) < 0) {
plog(ASL_LEVEL_ERR,
"getsockname (%s)\n", strerror(errno));
return -1;
}
m.msg_name = (caddr_t)from;
m.msg_namelen = *fromlen;
iov[0].iov_base = (caddr_t)buf;
iov[0].iov_len = buflen;
m.msg_iov = iov;
m.msg_iovlen = 1;
memset(cmsgbuf, 0, sizeof(cmsgbuf));
cm = (struct cmsghdr *)cmsgbuf;
m.msg_control = (caddr_t)cm;
m.msg_controllen = sizeof(cmsgbuf);
m.msg_flags = 0;
while ((len = recvmsg(s, &m, flags)) < 0) {
if (errno == EINTR)
continue;
plog(ASL_LEVEL_ERR, "recvmsg (%s)\n", strerror(errno));
return -1;
}
if (len == 0) {
return 0;
}
*fromlen = m.msg_namelen;
otolen = *tolen;
*tolen = 0;
for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(&m), cm_prev = NULL;
m.msg_controllen != 0 && cm && cm != cm_prev;
cm_prev = cm, cm = (struct cmsghdr *)CMSG_NXTHDR(&m, cm)) {
#if 0
plog(ASL_LEVEL_ERR,
"cmsg %d %d\n", cm->cmsg_level, cm->cmsg_type);)
#endif
#if defined(INET6) && defined(INET6_ADVAPI)
if (ss.ss_family == AF_INET6
&& cm->cmsg_level == IPPROTO_IPV6
&& cm->cmsg_type == IPV6_PKTINFO
&& otolen >= sizeof(*sin6)) {
pi = ALIGNED_CAST(struct in6_pktinfo *)(CMSG_DATA(cm));
*tolen = sizeof(*sin6);
sin6 = (struct sockaddr_in6 *)to;
memset(sin6, 0, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
memcpy(&sin6->sin6_addr, &pi->ipi6_addr,
sizeof(sin6->sin6_addr));
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
sin6->sin6_scope_id = pi->ipi6_ifindex;
else
sin6->sin6_scope_id = 0;
sin6->sin6_port =
((struct sockaddr_in6 *)&ss)->sin6_port;
otolen = -1;
continue;
}
#endif
#if defined(INET6) && defined(IPV6_RECVDSTADDR)
if (ss.ss_family == AF_INET6
&& cm->cmsg_level == IPPROTO_IPV6
&& cm->cmsg_type == IPV6_RECVDSTADDR
&& otolen >= sizeof(*sin6)) {
*tolen = sizeof(*sin6);
sin6 = (struct sockaddr_in6 *)to;
memset(sin6, 0, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
memcpy(&sin6->sin6_addr, CMSG_DATA(cm),
sizeof(sin6->sin6_addr));
sin6->sin6_port =
((struct sockaddr_in6 *)&ss)->sin6_port;
otolen = -1;
continue;
}
#endif
if (ss.ss_family == AF_INET
&& cm->cmsg_level == IPPROTO_IP
&& cm->cmsg_type == IP_RECVDSTADDR
&& otolen >= sizeof(*sin)) {
*tolen = sizeof(*sin);
sin = (struct sockaddr_in *)to;
memset(sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
sin->sin_len = sizeof(*sin);
memcpy(&sin->sin_addr, CMSG_DATA(cm),
sizeof(sin->sin_addr));
sin->sin_port = ((struct sockaddr_in *)&ss)->sin_port;
otolen = -1;
continue;
}
}
plogdump(ASL_LEVEL_DEBUG, buf, buflen, "@@@@@@ data from readmsg:\n");
return len;
}
int
sendfromto(s, buf, buflen, src, dst, cnt)
int s, cnt;
const void *buf;
size_t buflen;
struct sockaddr_storage *src;
struct sockaddr_storage *dst;
{
struct sockaddr_storage ss;
int len;
int i;
if (src->ss_family != dst->ss_family) {
plog(ASL_LEVEL_ERR,
"address family mismatch\n");
return -1;
}
len = sizeof(ss);
if (getsockname(s, (struct sockaddr *)&ss, (socklen_t*)&len) < 0) {
plog(ASL_LEVEL_ERR,
"getsockname (%s)\n", strerror(errno));
return -1;
}
plog(ASL_LEVEL_DEBUG,
"sockname %s\n", saddr2str((struct sockaddr *)&ss));
plog(ASL_LEVEL_DEBUG,
"send packet from %s\n", saddr2str((struct sockaddr *)src));
plog(ASL_LEVEL_DEBUG,
"send packet to %s\n", saddr2str((struct sockaddr *)dst));
if (src->ss_family != ss.ss_family) {
plog(ASL_LEVEL_ERR,
"address family mismatch\n");
return -1;
}
switch (src->ss_family) {
#if defined(INET6) && defined(INET6_ADVAPI)
case AF_INET6:
{
struct msghdr m;
struct cmsghdr *cm;
struct iovec iov[2];
u_int32_t cmsgbuf[256/sizeof(u_int32_t)]; struct in6_pktinfo *pi;
int ifindex;
struct sockaddr_in6 src6, dst6;
memcpy(&src6, src, sizeof(src6));
memcpy(&dst6, dst, sizeof(dst6));
ifindex = 0;
if (IN6_IS_ADDR_LINKLOCAL(&src6.sin6_addr)
|| IN6_IS_ADDR_MULTICAST(&src6.sin6_addr)) {
ifindex = src6.sin6_scope_id;
}
src6.sin6_flowinfo = dst6.sin6_flowinfo = 0;
memset(&m, 0, sizeof(m));
m.msg_name = (caddr_t)&dst6;
m.msg_namelen = sizeof(dst6);
iov[0].iov_base = (char *)buf;
iov[0].iov_len = buflen;
m.msg_iov = iov;
m.msg_iovlen = 1;
memset(cmsgbuf, 0, sizeof(cmsgbuf));
cm = (struct cmsghdr *)cmsgbuf;
m.msg_control = (caddr_t)cm;
m.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo));
cm->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
cm->cmsg_level = IPPROTO_IPV6;
cm->cmsg_type = IPV6_PKTINFO;
pi = ALIGNED_CAST(struct in6_pktinfo *)CMSG_DATA(cm);
memcpy(&pi->ipi6_addr, &src6.sin6_addr, sizeof(src6.sin6_addr));
pi->ipi6_ifindex = ifindex;
plog(ASL_LEVEL_DEBUG,
"src6 %s %d\n",
saddr2str((struct sockaddr *)&src6),
src6.sin6_scope_id);
plog(ASL_LEVEL_DEBUG,
"dst6 %s %d\n",
saddr2str((struct sockaddr *)&dst6),
dst6.sin6_scope_id);
for (i = 0; i < cnt; i++) {
len = sendmsg(s, &m, 0 );
if (len < 0) {
plog(ASL_LEVEL_ERR,
"sendmsg (%s)\n", strerror(errno));
if (errno != EHOSTUNREACH && errno != ENETDOWN && errno != ENETUNREACH) {
return -1;
}
len = 0;
}
plog(ASL_LEVEL_DEBUG,
"%d times of %d bytes message will be sent "
"to %s\n",
i + 1, len, saddr2str((struct sockaddr *)dst));
}
return len;
}
#endif
default:
{
int needclose = 0;
int sendsock;
if (ss.ss_family == src->ss_family && memcmp(&ss, src, sysdep_sa_len((struct sockaddr *)src)) == 0) {
sendsock = s;
needclose = 0;
} else {
int yes = 1;
sendsock = socket(src->ss_family, SOCK_DGRAM, 0);
if (sendsock < 0) {
plog(ASL_LEVEL_ERR,
"socket (%s)\n", strerror(errno));
return -1;
}
if (fcntl(sendsock, F_SETFL, O_NONBLOCK) == -1) {
plog(ASL_LEVEL_ERR, "failed to put sendsock socket in non-blocking mode\n");
}
if (setsockopt(sendsock, SOL_SOCKET,
SO_REUSEPORT,
(void *)&yes, sizeof(yes)) < 0) {
plog(ASL_LEVEL_ERR,
"setsockopt SO_REUSEPORT (%s)\n",
strerror(errno));
close(sendsock);
return -1;
}
#ifdef IPV6_USE_MIN_MTU
if (src->ss_family == AF_INET6 &&
setsockopt(sendsock, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
(void *)&yes, sizeof(yes)) < 0) {
plog(ASL_LEVEL_ERR,
"setsockopt IPV6_USE_MIN_MTU (%s)\n",
strerror(errno));
close(sendsock);
return -1;
}
#endif
if (setsockopt_bypass(sendsock, src->ss_family) < 0) {
close(sendsock);
return -1;
}
if (bind(sendsock, (struct sockaddr *)src, sysdep_sa_len((struct sockaddr *)src)) < 0) {
plog(ASL_LEVEL_ERR,
"bind 1 (%s)\n", strerror(errno));
close(sendsock);
return -1;
}
needclose = 1;
}
plogdump(ASL_LEVEL_DEBUG, (void*)buf, buflen, "@@@@@@ data being sent:\n");
for (i = 0; i < cnt; i++) {
len = sendto(sendsock, buf, buflen, 0, (struct sockaddr *)dst, sysdep_sa_len((struct sockaddr *)dst));
if (len < 0) {
plog(ASL_LEVEL_ERR,
"sendto (%s)\n", strerror(errno));
if (errno != EHOSTUNREACH && errno != ENETDOWN && errno != ENETUNREACH) {
if (needclose)
close(sendsock);
return -1;
}
plog(ASL_LEVEL_ERR,
"treating socket error (%s) like packet loss\n", strerror(errno));
len = 0;
}
plog(ASL_LEVEL_DEBUG,
"%d times of %d bytes message will be sent "
"to %s\n",
i + 1, len, saddr2str((struct sockaddr *)dst));
}
if (needclose)
close(sendsock);
return len;
}
}
}
int
setsockopt_bypass(int so, int family)
{
int level;
char *buf;
char *policy;
switch (family) {
case AF_INET:
level = IPPROTO_IP;
break;
#ifdef INET6
case AF_INET6:
level = IPPROTO_IPV6;
break;
#endif
default:
plog(ASL_LEVEL_ERR,
"unsupported address family %d\n", family);
return -1;
}
policy = "in bypass";
buf = ipsec_set_policy(policy, strlen(policy));
if (buf == NULL) {
plog(ASL_LEVEL_ERR,
"ipsec_set_policy (%s)\n",
ipsec_strerror());
return -1;
}
if (setsockopt(so, level,
(level == IPPROTO_IP ?
IP_IPSEC_POLICY : IPV6_IPSEC_POLICY),
buf, ipsec_get_policylen(buf)) < 0) {
plog(ASL_LEVEL_ERR,
"setsockopt IP_IPSEC_POLICY (%s)\n",
strerror(errno));
return -1;
}
racoon_free(buf);
policy = "out bypass";
buf = ipsec_set_policy(policy, strlen(policy));
if (buf == NULL) {
plog(ASL_LEVEL_ERR,
"ipsec_set_policy (%s)\n",
ipsec_strerror());
return -1;
}
if (setsockopt(so, level,
(level == IPPROTO_IP ?
IP_IPSEC_POLICY : IPV6_IPSEC_POLICY),
buf, ipsec_get_policylen(buf)) < 0) {
plog(ASL_LEVEL_ERR,
"setsockopt IP_IPSEC_POLICY (%s)\n",
strerror(errno));
return -1;
}
racoon_free(buf);
return 0;
}
struct sockaddr_storage *
newsaddr(int len)
{
struct sockaddr_storage *new;
if ((new = racoon_calloc(1, sizeof(*new))) == NULL) {
plog(ASL_LEVEL_ERR,
"%s\n", strerror(errno));
goto out;
}
new->ss_len = len;
out:
return new;
}
struct sockaddr_storage *
dupsaddr(struct sockaddr_storage *addr)
{
struct sockaddr_storage *new;
new = racoon_calloc(1, sizeof(*new));
if (new == NULL) {
plog(ASL_LEVEL_ERR, "%s\n", strerror(errno));
return NULL;
}
memcpy(new, addr, addr->ss_len);
return new;
}
char *
saddr2str(const struct sockaddr *saddr)
{
static char buf[NI_MAXHOST + NI_MAXSERV + 10];
char addr[NI_MAXHOST], port[NI_MAXSERV];
if (saddr == NULL) {
buf[0] = '\0';
return buf;
}
if (saddr->sa_family == AF_UNSPEC)
snprintf (buf, sizeof(buf), "%s", "anonymous");
else {
GETNAMEINFO(saddr, addr, port);
snprintf(buf, sizeof(buf), "%s[%s]", addr, port);
}
return buf;
}
char *
saddr2str_with_prefix(const struct sockaddr *saddr, int prefix)
{
static char buf[NI_MAXHOST + NI_MAXSERV + 10];
char addr[NI_MAXHOST], port[NI_MAXSERV];
if (saddr == NULL) {
buf[0] = '\0';
return buf;
}
if (saddr->sa_family == AF_UNSPEC)
snprintf (buf, sizeof(buf), "%s", "anonymous");
else {
GETNAMEINFO(saddr, addr, port);
snprintf(buf, sizeof(buf), "%s/%d[%s]", addr, prefix, port);
}
return buf;
}
char *
saddrwop2str(const struct sockaddr *saddr)
{
static char buf[NI_MAXHOST + NI_MAXSERV + 10];
char addr[NI_MAXHOST];
if (saddr == NULL) {
buf[0] = '\0';
return buf;
}
GETNAMEINFO_NULL(saddr, addr);
snprintf(buf, sizeof(buf), "%s", addr);
return buf;
}
char *
naddrwop2str(const struct netaddr *naddr)
{
static char buf[NI_MAXHOST + 10];
static const struct sockaddr sa_any;
if (naddr == NULL) {
buf[0] = '\0';
return buf;
}
if (memcmp(&naddr->sa, &sa_any, sizeof(sa_any)) == 0)
snprintf(buf, sizeof(buf), "%s", "any");
else {
snprintf(buf, sizeof(buf), "%s", saddrwop2str((struct sockaddr *)&naddr->sa.sa));
snprintf(&buf[strlen(buf)], sizeof(buf) - strlen(buf), "/%ld", naddr->prefix);
}
return buf;
}
char *
naddrwop2str_fromto(const char *format, const struct netaddr *saddr,
const struct netaddr *daddr)
{
static char buf[2*(NI_MAXHOST + NI_MAXSERV + 10) + 100];
char *src, *dst;
src = racoon_strdup(naddrwop2str(saddr));
dst = racoon_strdup(naddrwop2str(daddr));
STRDUP_FATAL(src);
STRDUP_FATAL(dst);
snprintf (buf, sizeof(buf), format, src, dst);
racoon_free (src);
racoon_free (dst);
return buf;
}
char *
saddr2str_fromto(format, saddr, daddr)
const char *format;
const struct sockaddr *saddr;
const struct sockaddr *daddr;
{
static char buf[2*(NI_MAXHOST + NI_MAXSERV + 10) + 100];
char *src, *dst;
if (saddr) {
src = racoon_strdup(saddr2str(saddr));
STRDUP_FATAL(src);
} else {
src = NULL;
}
if (daddr) {
dst = racoon_strdup(saddr2str(daddr));
STRDUP_FATAL(dst);
} else {
dst = NULL;
}
snprintf (buf, sizeof(buf), format, src? src:"[null]", dst? dst:"[null]");
if (src) {
racoon_free (src);
}
if (dst) {
racoon_free (dst);
}
return buf;
}
struct sockaddr_storage *
str2saddr(char *host, char *port)
{
struct addrinfo hints, *res;
struct sockaddr_storage *saddr;
int error;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_NUMERICHOST;
error = getaddrinfo(host, port, &hints, &res);
if (error != 0) {
plog(ASL_LEVEL_ERR,
"getaddrinfo(%s%s%s): %s\n",
host, port ? "," : "", port ? port : "",
gai_strerror(error));
return NULL;
}
if (res->ai_next != NULL) {
plog(ASL_LEVEL_WARNING,
"getaddrinfo(%s%s%s): "
"resolved to multiple address, "
"taking the first one\n",
host, port ? "," : "", port ? port : "");
}
saddr = newsaddr(sizeof(*saddr));
if (saddr == NULL) {
plog(ASL_LEVEL_ERR,
"failed to allocate buffer.\n");
freeaddrinfo(res);
return NULL;
}
memcpy(saddr, res->ai_addr, res->ai_addrlen);
freeaddrinfo(res);
return saddr;
}
void
mask_sockaddr(a, b, l)
struct sockaddr_storage *a;
const struct sockaddr_storage *b;
size_t l;
{
size_t i;
u_int8_t *p, alen;
switch (b->ss_family) {
case AF_INET:
alen = sizeof(struct in_addr);
p = (u_int8_t *)&((struct sockaddr_in *)a)->sin_addr;
break;
#ifdef INET6
case AF_INET6:
alen = sizeof(struct in6_addr);
p = (u_int8_t *)&((struct sockaddr_in6 *)a)->sin6_addr;
break;
#endif
default:
plog(ASL_LEVEL_ERR,
"invalid address family: %d\n", b->ss_family);
exit(1);
}
if ((alen << 3) < l) {
plog(ASL_LEVEL_ERR,
"unexpected inconsistency: %d %zu\n", b->ss_family, l);
exit(1);
}
memcpy(a, b, sysdep_sa_len((struct sockaddr *)b));
p[l / 8] &= (0xff00 >> (l % 8)) & 0xff;
for (i = l / 8 + 1; i < alen; i++)
p[i] = 0x00;
}
int
naddr_score(const struct netaddr *naddr, const struct sockaddr_storage *saddr)
{
static const struct netaddr naddr_any;
struct sockaddr_storage sa;
u_int16_t naddr_port, saddr_port;
int port_score;
if (!naddr || !saddr) {
plog(ASL_LEVEL_ERR,
"Call with null args: naddr=%p, saddr=%p\n",
naddr, saddr);
return -1;
}
if (memcmp(naddr, &naddr_any, sizeof(naddr_any)) == 0)
return 0;
if (naddr->sa.sa.ss_family != saddr->ss_family)
return -1;
naddr_port = extract_port(&naddr->sa.sa);
saddr_port = extract_port(saddr);
if (naddr_port == 0 || saddr_port == 0)
port_score = 0;
else if (naddr_port == saddr_port)
port_score = 1;
else
return -1;
mask_sockaddr(&sa, saddr, naddr->prefix);
if (loglevel >= ASL_LEVEL_DEBUG) {
char *a1, *a2, *a3;
a1 = racoon_strdup(naddrwop2str(naddr));
a2 = racoon_strdup(saddrwop2str((struct sockaddr *)saddr));
a3 = racoon_strdup(saddrwop2str((struct sockaddr *)&sa));
STRDUP_FATAL(a1);
STRDUP_FATAL(a2);
STRDUP_FATAL(a3);
plog(ASL_LEVEL_DEBUG,
"naddr=%s, saddr=%s (masked=%s)\n",
a1, a2, a3);
free(a1);
free(a2);
free(a3);
}
if (cmpsaddrwop(&sa, &naddr->sa.sa) == 0)
return naddr->prefix + port_score;
return -1;
}
u_int16_t
extract_port (const struct sockaddr_storage *addr)
{
u_int16_t port = -1;
if (!addr)
return port;
switch (addr->ss_family) {
case AF_INET:
port = ((struct sockaddr_in *)addr)->sin_port;
break;
case AF_INET6:
port = ((struct sockaddr_in6 *)addr)->sin6_port;
break;
default:
plog(ASL_LEVEL_ERR, "unknown AF: %u\n", addr->ss_family);
break;
}
return ntohs(port);
}
u_int16_t *
get_port_ptr (struct sockaddr_storage *addr)
{
u_int16_t *port_ptr;
if (!addr)
return NULL;
switch (addr->ss_family) {
case AF_INET:
port_ptr = &(((struct sockaddr_in *)addr)->sin_port);
break;
case AF_INET6:
port_ptr = &(((struct sockaddr_in6 *)addr)->sin6_port);
break;
default:
plog(ASL_LEVEL_ERR, "unknown AF: %u\n", addr->ss_family);
return NULL;
break;
}
return port_ptr;
}
u_int16_t *
set_port (struct sockaddr_storage *addr, u_int16_t new_port)
{
u_int16_t *port_ptr;
port_ptr = get_port_ptr (addr);
if (port_ptr)
*port_ptr = htons(new_port);
return port_ptr;
}