summaryrefslogtreecommitdiffstats
path: root/auxiliary/name-addr-test/gethostbyaddr.c
diff options
context:
space:
mode:
Diffstat (limited to 'auxiliary/name-addr-test/gethostbyaddr.c')
-rw-r--r--auxiliary/name-addr-test/gethostbyaddr.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/auxiliary/name-addr-test/gethostbyaddr.c b/auxiliary/name-addr-test/gethostbyaddr.c
new file mode 100644
index 0000000..e58db9e
--- /dev/null
+++ b/auxiliary/name-addr-test/gethostbyaddr.c
@@ -0,0 +1,46 @@
+ /*
+ * gethostbyaddr tester. compile with:
+ *
+ * cc -o gethostbyaddr gethostbyaddr.c (SunOS 4.x)
+ *
+ * cc -o gethostbyaddr gethostbyaddr.c -lnsl (SunOS 5.x)
+ *
+ * run as: gethostbyaddr address
+ *
+ * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+
+main(argc, argv)
+int argc;
+char **argv;
+{
+ struct hostent *hp;
+ long addr;
+
+ if (argc != 2) {
+ fprintf(stderr, "usage: %s i.p.addres\n", argv[0]);
+ exit(1);
+ }
+ addr = inet_addr(argv[1]);
+ if (hp = gethostbyaddr((char *) &addr, sizeof(addr), AF_INET)) {
+ printf("Hostname:\t%s\n", hp->h_name);
+ printf("Aliases:\t");
+ while (hp->h_aliases[0])
+ printf("%s ", *hp->h_aliases++);
+ printf("\n");
+ printf("Addresses:\t");
+ while (hp->h_addr_list[0])
+ printf("%s ", inet_ntoa(*(struct in_addr *) * hp->h_addr_list++));
+ printf("\n");
+ exit(0);
+ }
+ fprintf(stderr, "host %s not found\n", argv[1]);
+ exit(1);
+}