return 0;
}
-/* Keep in sync with lib/krb5/os/localaddr.c version. */
-
-/*
- * BSD 4.4 defines the size of an ifreq to be
- * max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
- * However, under earlier systems, sa_len isn't present, so the size is
- * just sizeof(struct ifreq)
- */
#define USE_AF AF_INET
#define USE_TYPE SOCK_DGRAM
#define USE_PROTO 0
#define SOCKET_ERRNO errno
-
-#ifdef HAVE_SA_LEN
-#ifndef max
-#define max(a,b) ((a) > (b) ? (a) : (b))
-#endif
-#define ifreq_size(i) max(sizeof(struct ifreq),\
- sizeof((i).ifr_name)+(i).ifr_addr.sa_len)
-#else
-#define ifreq_size(i) sizeof(struct ifreq)
-#endif /* HAVE_SA_LEN*/
-
-#ifdef HAVE_IFADDRS_H
-#include <ifaddrs.h>
-
-#ifdef DEBUG
-#include <netinet/in.h>
-#include <net/if.h>
-
-void printaddr (struct sockaddr *sa)
-{
- char buf[50];
- printf ("%p ", sa);
- switch (sa->sa_family) {
- case AF_INET:
- inet_ntop (AF_INET, &((struct sockaddr_in *)sa)->sin_addr,
- buf, sizeof (buf));
- printf ("inet %s", buf);
- break;
- case AF_INET6:
- inet_ntop (AF_INET6, &((struct sockaddr_in6 *)sa)->sin6_addr,
- buf, sizeof (buf));
- printf ("inet6 %s", buf);
- break;
- default:
- printf ("family=%d", sa->sa_family);
- break;
- }
-}
-
-void printifaddr (struct ifaddrs *ifp)
-{
- printf ("%p={\n", ifp);
-/* printf ("\tnext=%p\n", ifp->ifa_next); */
- printf ("\tname=%s\n", ifp->ifa_name);
- printf ("\tflags=");
- {
- int ch, flags = ifp->ifa_flags;
- printf ("%x", flags);
- ch = '<';
-#define X(F) if (flags & IFF_##F) { printf ("%c%s", ch, #F); flags &= ~IFF_##F; ch = ','; }
- X (UP); X (BROADCAST); X (DEBUG); X (LOOPBACK); X (POINTOPOINT);
- X (NOTRAILERS); X (RUNNING); X (NOARP); X (PROMISC); X (ALLMULTI);
- X (OACTIVE); X (SIMPLEX); X (MULTICAST);
- printf (">");
-#undef X
- }
- if (ifp->ifa_addr)
- printf ("\n\taddr="), printaddr (ifp->ifa_addr);
- if (ifp->ifa_netmask)
- printf ("\n\tnetmask="), printaddr (ifp->ifa_netmask);
- if (ifp->ifa_broadaddr)
- printf ("\n\tbroadaddr="), printaddr (ifp->ifa_broadaddr);
- if (ifp->ifa_dstaddr)
- printf ("\n\tdstaddr="), printaddr (ifp->ifa_dstaddr);
- if (ifp->ifa_data)
- printf ("\n\tdata=%p", ifp->ifa_data);
- printf ("\n}\n");
-}
-#endif /* DEBUG */
-
-static int
-addr_eq (const struct sockaddr *s1, const struct sockaddr *s2)
-{
- if (s1->sa_family != s2->sa_family)
- return 0;
-#ifdef HAVE_SA_LEN
- if (s1->sa_len != s2->sa_len)
- return 0;
- return !memcmp (s1, s2, s1->sa_len);
-#else
-#define CMPTYPE(T,F) (!memcmp(&((T*)s1)->F,&((T*)s2)->F,sizeof(((T*)s1)->F)))
- switch (s1->sa_family) {
- case AF_INET:
- return CMPTYPE (struct sockaddr_in, sin_addr);
- case AF_INET6:
- return CMPTYPE (struct sockaddr_in6, sin6_addr);
- default:
- /* Err on side of duplicate listings. */
- return 0;
- }
-#endif
-}
-#endif
-
-static int
-foreach_localaddr (void *data,
- int (*pass1fn) (void *, struct sockaddr *),
- int (*betweenfn) (void *),
- int (*pass2fn) (void *, struct sockaddr *))
-{
-#ifdef HAVE_IFADDRS_H
- struct ifaddrs *ifp_head, *ifp, *ifp2;
- int match, fail = 0;
-
- if (getifaddrs (&ifp_head) < 0)
- return errno;
- for (ifp = ifp_head; ifp; ifp = ifp->ifa_next) {
-#ifdef DEBUG
- printifaddr (ifp);
-#endif
- if ((ifp->ifa_flags & IFF_UP) == 0)
- continue;
- if (ifp->ifa_flags & IFF_LOOPBACK) {
- ifp->ifa_flags &= ~IFF_UP;
- continue;
- }
- /* If this address is a duplicate, punt. */
- match = 0;
- for (ifp2 = ifp_head; ifp2 && ifp2 != ifp; ifp2 = ifp2->ifa_next) {
- if ((ifp2->ifa_flags & IFF_UP) == 0)
- continue;
- if (ifp2->ifa_flags & IFF_LOOPBACK)
- continue;
- if (addr_eq (ifp->ifa_addr, ifp2->ifa_addr)) {
- match = 1;
- ifp->ifa_flags &= ~IFF_UP;
- break;
- }
- }
- if (match)
- continue;
- if ((*pass1fn) (data, ifp->ifa_addr)) {
- fail = 1;
- goto punt;
- }
- }
- if (betweenfn && (*betweenfn)(data)) {
- fail = 1;
- goto punt;
- }
- if (pass2fn)
- for (ifp = ifp_head; ifp; ifp = ifp->ifa_next) {
- if (ifp->ifa_flags & IFF_UP)
- if ((*pass2fn) (data, ifp->ifa_addr)) {
- fail = 1;
- goto punt;
- }
- }
- punt:
- freeifaddrs (ifp_head);
- return fail;
-#else
- struct ifreq *ifr, ifreq, *ifr2;
- struct ifconf ifc;
- int s, code, n, i, j;
- int est_if_count = 8, est_ifreq_size;
- char *buf = 0;
- size_t current_buf_size = 0;
- int fail = 0;
-#ifdef SIOCGSIZIFCONF
- int ifconfsize = -1;
-#endif
-
- s = socket (USE_AF, USE_TYPE, USE_PROTO);
- if (s < 0)
- return SOCKET_ERRNO;
-
- /* At least on NetBSD, an ifreq can hold an IPv4 address, but
- isn't big enough for an IPv6 or ethernet address. So add a
- little more space. */
- est_ifreq_size = sizeof (struct ifreq) + 8;
-#ifdef SIOCGSIZIFCONF
- code = ioctl (s, SIOCGSIZIFCONF, &ifconfsize);
- if (!code) {
- current_buf_size = ifconfsize;
- est_if_count = ifconfsize / est_ifreq_size;
- }
-#endif
- if (current_buf_size == 0)
- current_buf_size = est_ifreq_size * est_if_count;
- buf = malloc (current_buf_size);
-
- ask_again:
- memset(buf, 0, current_buf_size);
- ifc.ifc_len = current_buf_size;
- ifc.ifc_buf = buf;
-
- code = ioctl (s, SIOCGIFCONF, (char *)&ifc);
- if (code < 0) {
- int retval = errno;
- closesocket (s);
- return retval;
- }
- /* Test that the buffer was big enough that another ifreq could've
- fit easily, if the OS wanted to provide one. That seems to be
- the only indication we get, complicated by the fact that the
- associated address may make the required storage a little
- bigger than the size of an ifreq. */
- if (current_buf_size - ifc.ifc_len < sizeof (struct ifreq) + 40
-#ifdef SIOCGSIZIFCONF
- && ifconfsize <= 0
-#endif
- ) {
- int new_size;
- char *newbuf;
-
- est_if_count *= 2;
- new_size = est_ifreq_size * est_if_count;
- newbuf = realloc (buf, new_size);
- if (newbuf == 0) {
- krb5_error_code e = errno;
- free (buf);
- return e;
- }
- current_buf_size = new_size;
- buf = newbuf;
- goto ask_again;
- }
-
- n = ifc.ifc_len;
-
- for (i = 0; i < n; i+= ifreq_size(*ifr) ) {
- ifr = (struct ifreq *)((caddr_t) ifc.ifc_buf+i);
-
- strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof (ifreq.ifr_name));
-#ifdef TEST
- printf ("interface %s\n", ifreq.ifr_name);
-#endif
- if (ioctl (s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
- skip:
- /* mark for next pass */
- ifr->ifr_name[0] = 0;
- continue;
- }
-
-#ifdef IFF_LOOPBACK
- /* None of the current callers want loopback addresses. */
- if (ifreq.ifr_flags & IFF_LOOPBACK) {
-#ifdef TEST
- printf ("loopback\n");
-#endif
- goto skip;
- }
-#endif
- /* Ignore interfaces that are down. */
- if (!(ifreq.ifr_flags & IFF_UP)) {
-#ifdef TEST
- printf ("down\n");
-#endif
- goto skip;
- }
-
- /* Make sure we didn't process this address already. */
- for (j = 0; j < i; j += ifreq_size(*ifr2)) {
- ifr2 = (struct ifreq *)((caddr_t) ifc.ifc_buf+j);
- if (ifr2->ifr_name[0] == 0)
- continue;
- if (ifr2->ifr_addr.sa_family == ifr->ifr_addr.sa_family
- && ifreq_size (*ifr) == ifreq_size (*ifr2)
- /* Compare address info. If this isn't good enough --
- i.e., if random padding bytes turn out to differ
- when the addresses are the same -- then we'll have
- to do it on a per address family basis. */
- && !memcmp (&ifr2->ifr_addr.sa_data, &ifr->ifr_addr.sa_data,
- (ifreq_size (*ifr)
- - offsetof (struct ifreq, ifr_addr.sa_data)))) {
-#ifdef TEST
- printf ("duplicate addr\n");
-#endif
- goto skip;
- }
- }
-
- if ((*pass1fn) (data, &ifr->ifr_addr)) {
- fail = 1;
- goto punt;
- }
- }
-
- if (betweenfn && (*betweenfn)(data)) {
- fail = 1;
- goto punt;
- }
-
- if (pass2fn)
- for (i = 0; i < n; i+= ifreq_size(*ifr) ) {
- ifr = (struct ifreq *)((caddr_t) ifc.ifc_buf+i);
-
- if (ifr->ifr_name[0] == 0)
- /* Marked in first pass to be ignored. */
- continue;
-
- if ((*pass2fn) (data, &ifr->ifr_addr)) {
- fail = 1;
- goto punt;
- }
- }
- punt:
- closesocket(s);
- free (buf);
-
- return fail;
-#endif /* not HAVE_IFADDRS_H */
-}
+#include "foreachaddr.c"
struct socksetup {
const char *prog;
projects / krb5.git / commitdiff