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routing table is automatically added in FreeBSD

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This commit is contained in:
Sukchan Lee 2017-10-17 08:24:30 +09:00
parent b8a37b0ea1
commit 689c3b95e7
2 changed files with 74 additions and 19 deletions
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91
lib/core/src/unix/net_lib.c
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@ -16,6 +16,8 @@
#include <linux/if_tun.h>
#endif
#include <net/route.h>
#define NET_FD_TYPE_SOCK 0
#define NET_FD_TYPE_LINK 1
@ -1297,13 +1299,21 @@ cleanup:
int net_tun_set_ipv4(net_link_t *link, c_uint32_t ip_addr, c_uint8_t bits)
{
#if LINUX != 1
c_uint32_t mask_addr = htonl(0xffffffff << (32 - bits));
int sock = socket(AF_INET, SOCK_DGRAM, 0);
int sock;
struct ifaliasreq ifa;
struct ifreq ifr;
struct sockaddr_in addr;
struct sockaddr_in mask;
c_uint32_t mask_addr = htonl(0xffffffff << (32 - bits));
char buf[512];
int len;
struct rt_msghdr *rtm;
struct sockaddr_in dst, gw;
struct sockaddr_in *paddr;
sock = socket(AF_INET, SOCK_DGRAM, 0);
(void)memset(&ifa, '\0', sizeof ifa);
(void)strlcpy(ifa.ifra_name, link->ifname, sizeof ifa.ifra_name);
@ -1339,33 +1349,78 @@ int net_tun_set_ipv4(net_link_t *link, c_uint32_t ip_addr, c_uint8_t bits)
return -1;
}
#else
(void)memset(&addr, '\0', sizeof addr);
(void)memset(&addr, '\0', sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = ip_addr;
addr.sin_len = sizeof addr;
(void)memcpy(&ifa.ifra_addr, &addr, sizeof addr);
(void)memcpy(&ifa.ifra_broadaddr, &addr, sizeof addr);
addr.sin_len = sizeof(addr);
(void)memcpy(&ifa.ifra_addr, &addr, sizeof(addr));
(void)memcpy(&ifa.ifra_broadaddr, &addr, sizeof(addr));
(void)memset(&mask, '\0', sizeof mask);
(void)memset(&mask, '\0', sizeof(mask));
mask.sin_family = AF_INET;
mask.sin_addr.s_addr = mask_addr;
mask.sin_len = sizeof mask;
(void)memcpy(&ifa.ifra_mask, &mask, sizeof ifa.ifra_mask);
(void)memset(&addr, '\0', sizeof addr);
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = ip_addr;
addr.sin_len = sizeof addr;
(void)memcpy(&ifr.ifr_addr, &addr, sizeof addr);
mask.sin_addr.s_addr = 0xffffffff;
mask.sin_len = sizeof(mask);
(void)memcpy(&ifa.ifra_mask, &mask, sizeof(ifa.ifra_mask));
if (ioctl(sock, SIOCAIFADDR, &ifa) == -1) {
d_error("Can't src IP address(dev:%s err:%s)",
d_error("Can't IP address(dev:%s err:%s)",
link->ifname, strerror(errno));
return -1;
}
#endif /* !defined(DARWIN) */
close(sock);
close(sock); /* AF_INET, SOCK_DGRAM */
sock = socket(PF_ROUTE, SOCK_RAW, 0);
if (sock < 0)
{
d_error("Can't open PF_ROUTE(%s)", strerror(errno));
return -1;
}
(void)memset(&buf, 0, sizeof(buf));
rtm = (struct rt_msghdr *)buf;
rtm->rtm_type = RTM_ADD;
rtm->rtm_version = RTM_VERSION;
rtm->rtm_pid = getpid();
rtm->rtm_seq = 0;
rtm->rtm_flags = RTF_UP | RTF_GATEWAY;
rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
paddr = (struct sockaddr_in *)(rtm + 1);
(void)memset(&dst, '\0', sizeof(dst));
dst.sin_family = AF_INET;
dst.sin_addr.s_addr = ip_addr & mask_addr;
dst.sin_len = sizeof(dst);
(void)memcpy(paddr, &dst, sizeof(dst));
paddr = (struct sockaddr_in *)((char *)paddr +
CORE_ALIGN(sizeof(*paddr), sizeof(c_uintptr_t)));
(void)memset(&gw, '\0', sizeof(gw));
gw.sin_family = AF_INET;
gw.sin_addr.s_addr = ip_addr;
gw.sin_len = sizeof(gw);
(void)memcpy(paddr, &gw, sizeof(gw));
paddr = (struct sockaddr_in *)((char *)paddr +
CORE_ALIGN(sizeof(*paddr), sizeof(c_uintptr_t)));
(void)memset(&mask, '\0', sizeof(mask));
mask.sin_family = AF_INET;
mask.sin_addr.s_addr = mask_addr;
mask.sin_len = sizeof(mask);
(void)memcpy(paddr, &mask, sizeof(mask));
paddr = (struct sockaddr_in *)((char *)paddr +
CORE_ALIGN(sizeof(*paddr), sizeof(c_uintptr_t)));
len = (char*)paddr - buf;
rtm->rtm_msglen = len;
if (write(sock, buf, len) < 0)
{
d_error("Can't add routing(%s)", strerror(errno));
return -1;
}
close(sock); /* PF_ROUTE, SOCK_RAW */
#endif /* LINUX == 1 */