lots of new stuff

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@299 ec53bebd-3082-4978-b11e-865c3cabbd6b
1996-03-17 00:51:52 +00:00
parent 81cbbf7820
commit e40b97b423
21 changed files with 2152 additions and 3 deletions
--- a/lib/krb5/send_to_kdc.c
+++ b/lib/krb5/send_to_kdc.c
@@ -0,0 +1,85 @@
+#include "krb5_locl.h"
+
+static int
+send_and_recv (int fd,
+	       struct sockaddr_in *addr,
+	       krb5_data *send,
+	       krb5_data *recv)
+{
+     struct fdset fdset;
+     struct timeval timeout;
+     int ret;
+     long nbytes;
+
+     if (sendto (fd, send->data, send->len, 0,
+		 (struct sockaddr *)addr, sizeof(*addr)) < 0)
+	  return -1;
+     FD_ZERO(&fdset);
+     FD_SET(fd, &fdset);
+     timeout.tv_sec  = 3;
+     timeout.tv_usec = 0;
+     ret = select (fd + 1, &fdset, NULL, NULL, &timeout);
+     if (ret <= 0)
+	  return -1;
+     else {
+	  ioctl (fd, FIONREAD, &nbytes);
+
+	  nbytes -= sizeof(struct udphdr) + sizeof(struct iphdr);
+
+	  recv->data = malloc (nbytes);
+	  ret = recvfrom (fd, recv->data, nbytes, 0, NULL, 0);
+	  if (ret < 0) {
+	       free (recv->data);
+	       return -1;
+	  }
+	  recv->data = realloc (recv->data, ret);
+	  recv->len  = ret;
+	  return 0;
+     }
+}
+
+krb5_error_code
+krb5_sentdo_kdc (krb5_context context,
+		 const krb5_data *send,
+		 const krb5_data *realm,
+		 krb5_data *receive)
+{
+     krb5_error_code err;
+     char **hostlist, **hp, *p;
+     struct hostent *hostent;
+     int fd;
+     int port;
+     int i;
+
+     port = krb5_getportbyname ("kerberos", "udp", htons(750));
+     fd = socket (AF_INET, SOCK_DGRAM, 0);
+     if (fd < 0)
+	  return errno;
+
+     err = krb5_get_krbhst (context, realm, &hostlist);
+     if (err) {
+	  close (fd);
+	  return err;
+     }
+     for (i = 0; i < 3; ++i)
+	  for (hp = hostlist; p = *hp; ++hp) {
+	       char *addr;
+
+	       hostent = gethostbyname (p);
+	       while (addr = *hostent->h_addr_list++) {
+		    struct sockaddr_in a;
+		    
+		    memset (a, 0, sizeof(a));
+		    a.sin_family = AF_INET;
+		    a.sin_port   = port;
+		    a.sin_addr   = *((struct in_addr *)addr);
+		    
+		    if (send_and_recv (fd, &a, send, recv) == 0) {
+			 krb5_free_krbhst (context, hostlist);
+			 return KDC_ERR_NONE;
+		    }
+	       }
+	  }
+     krb5_free_krbhst (context, hostlist);
+     return KRB5_KDC_UNREACH;
+}