date and time created 83/12/05 16:21:36 by ralph

SCCS-vsn: old/mkhosts/mkhosts.c 4.1

diff --git a/usr/src/old/mkhosts/mkhosts.c b/usr/src/old/mkhosts/mkhosts.c
new file mode 100644 (file)
index 0000000..4634f18
--- /dev/null
+++ b/usr/src/old/mkhosts/mkhosts.c
@@ -0,0 +1,82 @@
+#ifndef lint
+static char *sccsid = "@(#)mkhosts.c   4.1 (Berkeley) 83/12/05";
+#endif
+
+#include <sys/file.h>
+#include <stdio.h>
+#include <netdb.h>
+#include <ndbm.h>
+
+char   buf[BUFSIZ];
+
+main(argc, argv)
+       char *argv[];
+{
+       DBM *dp;
+       register struct hostent *hp;
+       datum key, content;
+       register char *cp, *tp, **sp;
+       register int naliases, *nap;
+       int verbose = 0, entries = 0, maxlen = 0;
+
+       if (argc > 1 && strcmp(argv[1], "-v") == 0) {
+               verbose++;
+               argv++, argc--;
+       }
+       if (argc != 2) {
+               fprintf(stderr, "usage: mkhosts [ -v ] file\n");
+               exit(1);
+       }
+       umask(0);
+       dp = ndbmopen(argv[1], O_WRONLY|O_CREAT|O_EXCL, 0644);
+       if (dp == NULL) {
+               fprintf(stderr, "dbminit failed: ");
+               perror(argv[1]);
+               exit(1);
+       }
+       dp->db_maxbno = 0;
+       sethostent(1);
+       while (hp = gethostent()) {
+               cp = buf;
+               tp = hp->h_name;
+               while (*cp++ = *tp++)
+                       ;
+               nap = (int *)cp;
+               cp += sizeof (int);
+               naliases = 0;
+               for (sp = hp->h_aliases; *sp; sp++) {
+                       tp = *sp;
+                       while (*cp++ = *tp++)
+                               ;
+                       naliases++;
+               }
+               *nap = naliases;
+               bcopy((char *)&hp->h_addrtype, cp, sizeof (int));
+               cp += sizeof (int);
+               bcopy((char *)&hp->h_length, cp, sizeof (int));
+               cp += sizeof (int);
+               bcopy(hp->h_addr, cp, hp->h_length);
+               cp += hp->h_length;
+               content.dptr = buf;
+               content.dsize = cp - buf;
+               if (verbose)
+                       printf("store %s, %d aliases\n", hp->h_name, naliases);
+               key.dptr = hp->h_name;
+               key.dsize = strlen(hp->h_name);
+               dbmstore(dp, key, content);
+               for (sp = hp->h_aliases; *sp; sp++) {
+                       key.dptr = *sp;
+                       key.dsize = strlen(*sp);
+                       dbmstore(dp, key, content);
+               }
+               key.dptr = hp->h_addr;
+               key.dsize = hp->h_length;
+               dbmstore(dp, key, content);
+               entries++;
+               if (cp - buf > maxlen)
+                       maxlen = cp - buf;
+       }
+       endhostent();
+       printf("%d host entries, maximum length %d\n", entries, maxlen);
+       exit(0);
+}