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git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@365 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/krb5/os/locate_kdc.c b/src/lib/krb5/os/locate_kdc.c
new file mode 100644 (file)
index 0000000..42c0611
--- /dev/null
+++ b/src/lib/krb5/os/locate_kdc.c
@@ -0,0 +1,96 @@
+/*
+ * $Source$
+ * $Author$
+ *
+ * Copyright 1990 by the Massachusetts Institute of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <krb5/mit-copyright.h>.
+ *
+ * get socket addresses for KDC.
+ */
+
+#if !defined(lint) && !defined(SABER)
+static char rcsid_locate_kdc_c[] =
+"$Id$";
+#endif /* !lint & !SABER */
+
+#include <krb5/copyright.h>
+#include <krb5/krb5.h>
+
+#include <krb5/ext-proto.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+#define KRB5_UDP_PORT  8973    /* XXX */
+
+/*
+ * returns count of number of addresses found
+ */
+
+int krb5_locate_kdc(realm, addr_pp)
+    krb5_data *realm;
+    struct sockaddr **addr_pp;
+{
+    char **hostlist;
+    int code;
+    int i, j, out, count;
+    struct sockaddr *addr_p;
+    struct sockaddr_in *sin_p;
+    struct hostent *hp;
+    
+    hostlist = 0;
+    
+    code = krb5_get_krbhst (realm, &hostlist);
+    if (code != 0)
+       return 0;               /* XXX losing error code */
+
+    for (i=0; hostlist[i]; i++)
+       ;
+    count = i;
+    
+    if (count == 0)
+       return 0;
+
+    addr_p = (struct sockaddr *)malloc (sizeof (struct sockaddr) * count);
+
+    for (i=0, out=0; hostlist[i]; i++) {
+       hp = gethostbyname(hostlist[i]);
+       if (hp != 0) {
+           switch (hp->h_addrtype) {
+           case AF_INET:
+               for (j=0; hp->h_addr_list[j]; j++) {
+                   sin_p = (struct sockaddr_in *) &addr_p[out++];
+                   memset ((char *)sin_p, sizeof(struct sockaddr), 0);
+                   sin_p->sin_family = hp->h_addrtype;
+                   sin_p->sin_port = KRB5_UDP_PORT;
+                   memcpy((char *)&sin_p->sin_addr,
+                          (char *)hp->h_addr_list[j],
+                          sizeof(struct in_addr));
+                   if (out >= count) {
+                       count *= 2;
+                       addr_p = (struct sockaddr *)
+                           realloc ((char *)addr_p,
+                                    sizeof(struct sockaddr) * count);
+                   }
+               }
+               break;
+           default:
+               break;
+           }
+       }
+       free(hostlist[i]);
+       hostlist[i] = 0;
+    }
+    free ((char *)hostlist);
+                               /*
+                                * XXX need to distinguish between
+                                * "can't resolve KDC name" and
+                                * "can't find any KDC names"
+                                */
+    *addr_pp = addr_p;
+    return out;
+}