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- /*
- * The following code has been derived chiefly from the BSD distributions
- * of the utility program unstr and the random quote displayer fortune.
- * The utility produced by this code shares characteristics of both
- * (it might be regarded as a minimalist implementation of fortune, for
- * large values of 'minimal'), and is here offered so as to have the
- * minimal necessary tools for rabbiting a strfile routine into some other,
- * more significant program, all in one place. A programmer who cares and
- * has the proper training could probably clean this up significantly; it's
- * all stolen code (first rule of programming: steal) hacked together to
- * fit. Or, to paraphrase the old saw about how the British built ships,
- * it's coded by the mile and cut off to order. In that analogy, this
- * program's about an inch--and separated with an axe.
- *
- * Axe murderess programming. Wotta concept!
- *
- * Use at your own peril, especially as a pattern (kludge, kludge!). This
- * program, at least, shouldn't have any real chance of corrupting data,
- * though; it opens files ro and dumps to the screen. If you redirect
- * output, you definitely do so at your own peril (I lost six hours of
- * editing on a fortune file that way, by redirecting the output of unstr
- * before it had an outputfile option, trying to skip over the mv x.sorted
- * x step. Axe murderess redirection, in that case).
- *
- * Blame Amy A. Lewis. September, 1995. alewis@email.unc.edu
- */
-
- /*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ken Arnold.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- /* randstr repeats the minimum functionality of the fortune program. It
- * finds the fortune text or data file specified on the command line --
- * one or the other, not both -- generates a random number, and displays
- * the text string indexed. No provision is made for any other command
- * line switches. At all.
- *
- * Usage:
- *
- * randstr filename[.ext]
- *
- * Example: run sed or Perl over your /etc/passwd, and kick out a
- * strfile-format file containing lognames on the first line and full
- * names on the second. Write a script called 'lottery' which is
- * called once a month from crontab; it in turn calls randstr lusers,
- * and the winning luser gets a prize notification sent by email from
- * the lottery script. Living up to promises is optional.
- *
- * Note: if you're a sysadmin who regularly reads _Mein Kampf_ for the
- * deep truths buried in it, and believe in Truth, Justice, and the
- * American Family, you could use this to replace fortune, by pointing
- * it at a small, Family Values database. The great advantage to this,
- * in my opinion, is that it wouldn't take up any disk space at all.
- * Who're you gonna quote? Dan Quayle?
- */
-
- #include <netinet/in.h>
- #include <sys/param.h>
- #include "strfile.h"
- #include <stdio.h>
- #include <stdlib.h>
- #include <ctype.h>
- #include <string.h>
- #include <unistd.h>
- #include <time.h>
- #ifndef MAXPATHLEN
- #define MAXPATHLEN 1024
- #endif /* MAXPATHLEN */
-
- char *Infile, /* name of input file */
- Datafile[MAXPATHLEN], /* name of data file */
- Delimch; /* delimiter character */
-
- FILE *Inf, *Dataf, *Outf;
-
- off_t pos, Seekpts[2]; /* seek pointers to fortunes */
-
-
- void getargs(int ac, char *av[])
- {
- extern int optind;
- char *extc;
-
- av += optind + 1;
-
- if (*av)
- {
- Infile = *av;
- /* Hmm. Don't output anything if we can help it.
- * fprintf(stderr, "Input file: %s\n",Infile); */
- if (!strrchr(Infile, '.'))
- {
- strcpy(Datafile, Infile);
- strcat(Datafile, ".dat");
- }
- else
- {
- strcpy(Datafile, Infile);
- extc = strrchr(Infile, '.');
- *extc = '\0';
- }
- }
- else
- /* {
- * Don't write out errors here, either; trust in exit codes and sh
- * fprintf(stderr, "No input file name\n");
- * fprintf(stderr, "Usage:\n\tunstr [-c C] datafile[.ext] [outputfile]\n");
- */ exit(1);
- /* } */
- }
-
- /*
- * get_pos:
- * Get the position from the pos file, if there is one. If not,
- * return a random number.
- */
- void get_pos(STRFILE * fp)
- {
- pos = random() % fp->str_numstr;
- if (++(pos) >= fp->str_numstr)
- pos -= fp->str_numstr;
- }
-
- /*
- * get_fort:
- * Get the fortune data file's seek pointer for the next fortune.
- */
- void get_fort(STRFILE fp)
- {
- register int choice;
-
- choice = random() % fp.str_numstr;
-
- get_pos(&fp);
- fseek(Dataf, (long) (sizeof fp + pos * sizeof Seekpts[0]), 0);
- fread(Seekpts, sizeof Seekpts, 1, Dataf);
- Seekpts[0] = ntohl(Seekpts[0]);
- Seekpts[1] = ntohl(Seekpts[1]);
- }
-
- void display(FILE * fp, STRFILE table)
- {
- register char *p, ch;
- unsigned char line[BUFSIZ];
- int i;
-
- fseek(fp, (long) Seekpts[0], 0);
- for (i = 0; fgets(line, sizeof line, fp) != NULL &&
- !STR_ENDSTRING(line, table); i++)
- {
- if (table.str_flags & STR_ROTATED)
- for (p = line; (ch = *p); ++p)
- if (isupper(ch))
- *p = 'A' + (ch - 'A' + 13) % 26;
- else if (islower(ch))
- *p = 'a' + (ch - 'a' + 13) % 26;
- fputs(line, stdout);
- }
- fflush(stdout);
- }
-
- int main(int ac, char **av)
- {
- static STRFILE tbl; /* description table */
-
- getargs(ac, av);
- if ((Inf = fopen(Infile, "r")) == NULL)
- {
- perror(Infile);
- exit(1);
- }
- if ((Dataf = fopen(Datafile, "r")) == NULL)
- {
- perror(Datafile);
- exit(1);
- }
- fread((char *) &tbl, sizeof tbl, 1, Dataf);
- tbl.str_version = ntohl(tbl.str_version);
- tbl.str_numstr = ntohl(tbl.str_numstr);
- tbl.str_longlen = ntohl(tbl.str_longlen);
- tbl.str_shortlen = ntohl(tbl.str_shortlen);
- tbl.str_flags = ntohl(tbl.str_flags);
-
- srandom((int) (time((time_t *) NULL) + getpid()));
- get_fort(tbl);
- display(Inf, tbl);
-
- exit(0);
-
- fclose(Inf);
- fclose(Dataf);
- fclose(Outf);
- exit(0);
- }
-