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Avoid crash if an interface has no addresses.

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This commit is contained in:
Olaf Seibert
2015-12-22 22:35:07 +01:00
parent f7761c466a
commit 9aee94ee3d
1 changed files with 27 additions and 21 deletions
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48
src/osdnet.c
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@@ -230,6 +230,10 @@ osn_iftab_addaddress(char *name, struct sockaddr *addr)
int i;
int idx;
if (!name) {
return NULL;
}
/* First see if the name is already known */
idx = -1;
@@ -250,31 +254,33 @@ osn_iftab_addaddress(char *name, struct sockaddr *addr)
ife = &iftab[idx];
switch (addr->sa_family) {
case AF_INET: {
struct sockaddr_in *sin = (struct sockaddr_in *)addr;
ife->ife_ipia = sin->sin_addr;
ife->ife_gotip4 = TRUE;
break;
}
if (addr) {
switch (addr->sa_family) {
case AF_INET: {
struct sockaddr_in *sin = (struct sockaddr_in *)addr;
ife->ife_ipia = sin->sin_addr;
ife->ife_gotip4 = TRUE;
break;
}
#if defined(AF_LINK)
case AF_LINK: {
struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
if (sdl->sdl_type == IFT_ETHER && sdl->sdl_alen == ETHER_ADRSIZ) {
ea_set(ife->ife_ea, LLADDR(sdl));
ife->ife_gotea = TRUE;
}
}
case AF_LINK: {
struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
if (sdl->sdl_type == IFT_ETHER && sdl->sdl_alen == ETHER_ADRSIZ) {
ea_set(ife->ife_ea, LLADDR(sdl));
ife->ife_gotea = TRUE;
}
}
#endif /* AF_LINK*/
#if defined(AF_PACKET)
case AF_PACKET: {
struct sockaddr_ll *sll = (struct sockaddr_ll *)addr;
if (sll->sll_hatype == ARPHRD_ETHER && sll->sll_halen == ETHER_ADRSIZ) {
ea_set(ife->ife_ea, &sll->sll_addr);
ife->ife_gotea = TRUE;
}
}
case AF_PACKET: {
struct sockaddr_ll *sll = (struct sockaddr_ll *)addr;
if (sll->sll_hatype == ARPHRD_ETHER && sll->sll_halen == ETHER_ADRSIZ) {
ea_set(ife->ife_ea, &sll->sll_addr);
ife->ife_gotea = TRUE;
}
}
#endif /* AF_PACKET*/
}
}
return ife;