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sunos: set phys_addr of interface_address using ARP

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If getifaddrs() returns an all zero ifa_addr field, then use ARP to
set the phys_addr field of the uv_interface_address_t on the sunos
platform.

PR-URL: https://github.com/libuv/libuv/pull/907
Reviewed-By: Imran Iqbal <imran@imraniqbal.org>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
This commit is contained in:
Brian Maher 2016-06-10 09:04:59 -07:00 committed by Saúl Ibarra Corretgé
parent 7b9e25a9a9
commit d75e334e34
1 changed files with 48 additions and 20 deletions
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68
src/unix/sunos.c
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@ -33,6 +33,8 @@
#endif
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_arp.h>
#include <sys/sockio.h>
#include <sys/loadavg.h>
#include <sys/time.h>
@ -692,13 +694,57 @@ void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count) {
uv__free(cpu_infos);
}
/*
* Inspired By:
* https://blogs.oracle.com/paulie/entry/retrieving_mac_address_in_solaris
* http://www.pauliesworld.org/project/getmac.c
*/
static int uv__set_phys_addr(uv_interface_address_t* address,
struct ifaddrs* ent) {
struct sockaddr_dl* sa_addr;
int sockfd;
int i;
struct arpreq arpreq;
/* This appears to only work as root */
sa_addr = (struct sockaddr_dl*)(ent->ifa_addr);
memcpy(address->phys_addr, LLADDR(sa_addr), sizeof(address->phys_addr));
for (i = 0; i < sizeof(address->phys_addr); i++) {
if (address->phys_addr[i] != 0)
return 0;
}
memset(&arpreq, 0, sizeof(arpreq));
if (address->address.address4.sin_family == AF_INET) {
struct sockaddr_in* sin = ((struct sockaddr_in*)&arpreq.arp_pa);
sin->sin_addr.s_addr = address->address.address4.sin_addr.s_addr;
} else if (address->address.address4.sin_family == AF_INET6) {
struct sockaddr_in6* sin = ((struct sockaddr_in6*)&arpreq.arp_pa);
memcpy(sin->sin6_addr.s6_addr,
address->address.address6.sin6_addr.s6_addr,
sizeof(address->address.address6.sin6_addr.s6_addr));
} else {
return 0;
}
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0)
return -errno;
if (ioctl(sockfd, SIOCGARP, (char*)&arpreq) == -1) {
uv__close(sockfd);
return -errno;
}
memcpy(address->phys_addr, arpreq.arp_ha.sa_data, sizeof(address->phys_addr));
uv__close(sockfd);
return 0;
}
int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
#ifdef SUNOS_NO_IFADDRS
return -ENOSYS;
#else
uv_interface_address_t* address;
struct sockaddr_dl* sa_addr;
struct ifaddrs* addrs;
struct ifaddrs* ent;
int i;
@ -751,28 +797,10 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
address->is_internal = !!((ent->ifa_flags & IFF_PRIVATE) ||
(ent->ifa_flags & IFF_LOOPBACK));
uv__set_phys_addr(address, ent);
address++;
}
/* Fill in physical addresses for each interface */
for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
if (!((ent->ifa_flags & IFF_UP) && (ent->ifa_flags & IFF_RUNNING)) ||
(ent->ifa_addr == NULL) ||
(ent->ifa_addr->sa_family != AF_LINK)) {
continue;
}
address = *addresses;
for (i = 0; i < (*count); i++) {
if (strcmp(address->name, ent->ifa_name) == 0) {
sa_addr = (struct sockaddr_dl*)(ent->ifa_addr);
memcpy(address->phys_addr, LLADDR(sa_addr), sizeof(address->phys_addr));
}
address++;
}
}
freeifaddrs(addrs);
return 0;