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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /auxiliary/name-addr-test/gethostbyaddr.c
parentInitial commit. (diff)
downloadpostfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz
postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-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);
+}