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restructured

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@3219 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
1997-08-28 01:28:07 +00:00
parent 0becc7408b
commit e2c0e660f2
1 changed files with 63 additions and 54 deletions
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117
lib/krb5/get_addrs.c
View File

@@ -98,6 +98,7 @@ find_all_addresses (krb5_addresses *res, int loop)
struct ifconf ifconf;
int num, j;
char *p;
size_t sz;
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0)
@@ -117,7 +118,9 @@ find_all_addresses (krb5_addresses *res, int loop)
j = 0;
ifreq.ifr_name[0] = '\0';
for (p = ifconf.ifc_buf; p < ifconf.ifc_buf + ifconf.ifc_len;) {
for (p = ifconf.ifc_buf;
p < ifconf.ifc_buf + ifconf.ifc_len;
p += sz) {
struct ifreq *ifr = (struct ifreq *)p;
/* This is somewhat kludgy, but it seems to work. */
@@ -127,40 +130,49 @@ find_all_addresses (krb5_addresses *res, int loop)
if(ifr->ifr_addr.sa_len)
sz = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
#endif
if(strncmp(ifreq.ifr_name, ifr->ifr_name, sizeof(ifr->ifr_name))
&& (loop || strncmp (ifr->ifr_name, "lo", 2))) {
if(ioctl(fd, SIOCGIFFLAGS, ifr) < 0) {
close (fd);
free (res->val);
return errno;
}
if (ifr->ifr_flags & IFF_UP) {
if(ioctl(fd, SIOCGIFADDR, ifr) < 0) {
close (fd);
free (res->val);
return errno;
}
switch (ifr->ifr_addr.sa_family) {
if(strncmp(ifreq.ifr_name,
ifr->ifr_name,
sizeof(ifr->ifr_name)) == 0)
continue;
if(ioctl(fd, SIOCGIFFLAGS, ifr) < 0) {
close (fd);
free (res->val);
return errno;
}
if(!(ifr->ifr_flags & IFF_UP)
|| (loop && ifr->ifr_flags & IFF_LOOPBACK))
continue;
/*
* Get the address of the interface. If this fails, it's
* usually because this interface is up, but has no address
* configured. There might be some fatal errors for which
* we should bail out, but now we prefer ignoring them.
*/
if(ioctl(fd, SIOCGIFADDR, ifr) < 0)
continue;
switch (ifr->ifr_addr.sa_family) {
#ifdef AF_INET
case AF_INET: {
unsigned char addr[4];
struct sockaddr_in *sin;
res->val[j].addr_type = AF_INET;
/* This is somewhat XXX */
sin = (struct sockaddr_in*)&ifr->ifr_addr;
memcpy(addr,
&sin->sin_addr,
4);
err = krb5_data_copy(&res->val[j].address,
addr, 4);
if (err) {
close (fd);
free (res->val);
return ENOMEM;
}
++j;
break;
}
case AF_INET: {
unsigned char addr[4];
struct sockaddr_in *sin;
res->val[j].addr_type = AF_INET;
/* This is somewhat XXX */
sin = (struct sockaddr_in*)&ifr->ifr_addr;
memcpy(addr, &sin->sin_addr, 4);
err = krb5_data_copy(&res->val[j].address,
addr, 4);
if (err) {
close (fd);
free (res->val);
return ENOMEM;
}
++j;
break;
}
#endif /* AF_INET */
/*
@@ -168,27 +180,24 @@ find_all_addresses (krb5_addresses *res, int loop)
*/
#if defined(AF_INET6) && defined(HAVE_NETINET_IN6_H)
case AF_INET6: {
res->val[j].addr_type = AF_INET6;
err = krb5_data_copy(&res->val[j].address,
&ifr->ifr_addr,
sizeof(struct sockaddr_in6));
if (err) {
close (fd);
free (res->val);
return ENOMEM;
}
++j;
break;
}
#endif /* AF_INET6 */
default:
break;
}
}
ifreq = *ifr;
case AF_INET6: {
res->val[j].addr_type = AF_INET6;
err = krb5_data_copy(&res->val[j].address,
&ifr->ifr_addr,
sizeof(struct sockaddr_in6));
if (err) {
close (fd);
free (res->val);
return ENOMEM;
}
++j;
break;
}
p = p + sz;
#endif /* AF_INET6 */
default:
break;
}
ifreq = *ifr;
}
close (fd);
if (j != num) {