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fixing compilation of socket_t on systems that have neither IP_PKTINFO (Linux) nor IP_SENDSRCADDR (FreeBSD)

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This commit is contained in:
Tobias Brunner
2009-05-12 17:40:43 +02:00
parent 0a3ca29021
commit 75a354bb6b
1 changed files with 33 additions and 22 deletions
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src/charon/network/socket.c
+33 -22
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@@ -54,7 +54,11 @@
/* these are not defined on some platforms */
#ifndef SOL_IP
#define SOL_IP IPPROTO_IP
#endif
#ifndef SOL_IPV6
#define SOL_IPV6 IPPROTO_IPV6
#endif
#ifndef SOL_UDP
#define SOL_UDP IPPROTO_UDP
#endif
@@ -213,22 +217,24 @@ static status_t receiver(private_socket_t *this, packet_t **packet)
dest = host_create_from_sockaddr((sockaddr_t*)&dst);
}
if (cmsgptr->cmsg_level == SOL_IP &&
#ifdef IP_RECVDSTADDR
#ifdef IP_PKTINFO
cmsgptr->cmsg_type == IP_PKTINFO
#elif defined(IP_RECVDSTADDR)
cmsgptr->cmsg_type == IP_RECVDSTADDR
#else
cmsgptr->cmsg_type == IP_PKTINFO
FALSE
#endif
)
{
struct in_addr *addr;
struct sockaddr_in dst;
struct sockaddr_in dst;
#ifdef IP_RECVDSTADDR
addr = (struct in_addr*)CMSG_DATA(cmsgptr);
#else
#ifdef IP_PKTINFO
struct in_pktinfo *pktinfo;
pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsgptr);
addr = &pktinfo->ipi_addr;
#elif defined(IP_RECVDSTADDR)
addr = (struct in_addr*)CMSG_DATA(cmsgptr);
#endif
memset(&dst, 0, sizeof(dst));
memcpy(&dst.sin_addr, addr, sizeof(dst.sin_addr));
@@ -355,31 +361,33 @@ status_t sender(private_socket_t *this, packet_t *packet)
{
if (family == AF_INET)
{
#if defined(IP_PKTINFO) || defined(IP_SENDSRCADDR)
struct in_addr *addr;
struct sockaddr_in *sin;
#ifdef IP_SENDSRCADDR
char buf[CMSG_SPACE(sizeof(struct in_addr))];
#else
#ifdef IP_PKTINFO
char buf[CMSG_SPACE(sizeof(struct in_pktinfo))];
struct in_pktinfo *pktinfo;
#elif defined(IP_SENDSRCADDR)
char buf[CMSG_SPACE(sizeof(struct in_addr))];
#endif
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_IP;
#ifdef IP_SENDSRCADDR
cmsg->cmsg_type = IP_SENDSRCADDR;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
addr = (struct in_addr*)CMSG_DATA(cmsg);
#else
#ifdef IP_PKTINFO
cmsg->cmsg_type = IP_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg);
memset(pktinfo, 0, sizeof(struct in_pktinfo));
addr = &pktinfo->ipi_spec_dst;
#elif defined(IP_SENDSRCADDR)
cmsg->cmsg_type = IP_SENDSRCADDR;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
addr = (struct in_addr*)CMSG_DATA(cmsg);
#endif
sin = (struct sockaddr_in*)src->get_sockaddr(src);
memcpy(addr, &sin->sin_addr, sizeof(struct in_addr));
#endif /* IP_PKTINFO || IP_SENDSRCADDR */
}
else
{
@@ -419,7 +427,7 @@ static int open_socket(private_socket_t *this, int family, u_int16_t port)
int type = UDP_ENCAP_ESPINUDP;
struct sockaddr_storage addr;
socklen_t addrlen;
u_int sol, pktinfo;
u_int sol, pktinfo = 0;
int skt;
memset(&addr, 0, sizeof(addr));
@@ -434,10 +442,10 @@ static int open_socket(private_socket_t *this, int family, u_int16_t port)
sin->sin_port = htons(port);
addrlen = sizeof(struct sockaddr_in);
sol = SOL_IP;
#ifdef IP_RECVDSTADDR
pktinfo = IP_RECVDSTADDR;
#else
#ifdef IP_PKTINFO
pktinfo = IP_PKTINFO;
#elif defined(IP_RECVDSTADDR)
pktinfo = IP_RECVDSTADDR;
#endif
break;
}
@@ -478,11 +486,14 @@ static int open_socket(private_socket_t *this, int family, u_int16_t port)
}
/* get additional packet info on receive */
if (setsockopt(skt, sol, pktinfo, &on, sizeof(on)) < 0)
if (pktinfo > 0)
{
DBG1(DBG_NET, "unable to set IP_PKTINFO on socket: %s", strerror(errno));
close(skt);
return 0;
if (setsockopt(skt, sol, pktinfo, &on, sizeof(on)) < 0)
{
DBG1(DBG_NET, "unable to set IP_PKTINFO on socket: %s", strerror(errno));
close(skt);
return 0;
}
}
/* enable UDP decapsulation globally, only for one socket needed */