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authorUlrich Drepper <drepper@redhat.com>2004-09-26 11:11:28 +0000
committerUlrich Drepper <drepper@redhat.com>2004-09-26 11:11:28 +0000
commit412c954afacf0e5f62ff66ae870df18444b4a799 (patch)
tree8ddcfdae9cc216d068b171a1bda2b4e83a6bd04c /sunrpc/pmap_rmt.c
parent6497a1d081505a2d0b50e06fcdca71d5f0a11192 (diff)
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[BZ #381]
Update. * sunrpc/clnt_udp.c (is_network_up): Use getifaddrs instead of ioctl. * sunrpc/get_myaddr.c (get_myaddress): Likewise. * sunrpc/pmap_clnt.c (__get_myaddress): Likewise. * sunrpc/pmap_rmt.c (getbroadcastnets): Likewise. Change interface to avoid buffer overrun and remove now useless parameters. (clnt_broadcast): Adjust caller. [BZ #381].
Diffstat (limited to 'sunrpc/pmap_rmt.c')
-rw-r--r--sunrpc/pmap_rmt.c65
1 files changed, 21 insertions, 44 deletions
diff --git a/sunrpc/pmap_rmt.c b/sunrpc/pmap_rmt.c
index c02f546..e446f5e 100644
--- a/sunrpc/pmap_rmt.c
+++ b/sunrpc/pmap_rmt.c
@@ -53,6 +53,7 @@ static char sccsid[] = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro";
#undef _POSIX_SOURCE /* Ultrix <sys/param.h> needs --roland@gnu */
#include <sys/param.h> /* Ultrix needs before net/if --roland@gnu */
#include <net/if.h>
+#include <ifaddrs.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#define MAX_BROADCAST_SIZE 1400
@@ -174,55 +175,31 @@ INTDEF(xdr_rmtcallres)
static int
internal_function
-getbroadcastnets (struct in_addr *addrs, int sock, char *buf)
- /* int sock: any valid socket will do */
- /* char *buf: why allocate more when we can use existing... */
+getbroadcastnets (struct in_addr *addrs, int naddrs)
{
- struct ifconf ifc;
- struct ifreq ifreq, *ifr;
- struct sockaddr_in *sin;
- int n, i;
+ struct ifaddrs *ifa;
- ifc.ifc_len = UDPMSGSIZE;
- ifc.ifc_buf = buf;
- if (__ioctl (sock, SIOCGIFCONF, (char *) &ifc) < 0)
+ if (getifaddrs (&ifa) == 0)
{
- perror (_("broadcast: ioctl (get interface configuration)"));
- return (0);
+ perror ("broadcast: getifaddrs");
+ return 0;
}
- ifr = ifc.ifc_req;
- for (i = 0, n = ifc.ifc_len / sizeof (struct ifreq); n > 0; n--, ifr++)
+
+ int i = 0;
+ struct ifaddrs *run = ifa;
+ while (run != NULL && i < naddrs)
{
- ifreq = *ifr;
- if (__ioctl (sock, SIOCGIFFLAGS, (char *) &ifreq) < 0)
- {
- perror (_("broadcast: ioctl (get interface flags)"));
- continue;
- }
- if ((ifreq.ifr_flags & IFF_BROADCAST) &&
- (ifreq.ifr_flags & IFF_UP) &&
- ifr->ifr_addr.sa_family == AF_INET)
- {
- sin = (struct sockaddr_in *) &ifr->ifr_addr;
-#ifdef SIOCGIFBRDADDR /* 4.3BSD */
- if (__ioctl (sock, SIOCGIFBRDADDR, (char *) &ifreq) < 0)
- {
- addrs[i++] = inet_makeaddr (inet_netof
- /* Changed to pass struct instead of s_addr member
- by roland@gnu. */
- (sin->sin_addr), INADDR_ANY);
- }
- else
- {
- addrs[i++] = ((struct sockaddr_in *)
- &ifreq.ifr_addr)->sin_addr;
- }
-#else /* 4.2 BSD */
- addrs[i++] = inet_makeaddr (inet_netof
- (sin->sin_addr.s_addr), INADDR_ANY);
-#endif
- }
+ if ((run->ifa_flags & IFF_BROADCAST) != 0
+ && (run->ifa_flags & IFF_UP) != 0
+ && run->ifa_addr->sa_family == AF_INET)
+ /* Copy the broadcast address. */
+ addrs[i++] = ((struct sockaddr_in *) run->ifa_broadaddr)->sin_addr;
+
+ run = run->ifa_next;
}
+
+ freeifaddrs (ifa);
+
return i;
}
@@ -280,7 +257,7 @@ clnt_broadcast (prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
#endif /* def SO_BROADCAST */
fd.fd = sock;
fd.events = POLLIN;
- nets = getbroadcastnets (addrs, sock, inbuf);
+ nets = getbroadcastnets (addrs, sizeof (addrs) / sizeof (addrs[0]));
__bzero ((char *) &baddr, sizeof (baddr));
baddr.sin_family = AF_INET;
baddr.sin_port = htons (PMAPPORT);