usr/src/usr.sbin/amd/mk-amd-map/mk-amd-map.c

/*
 * Copyright (c) 1990 Jan-Simon Pendry
 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * 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.
 *
 *      @(#)mk-amd-map.c        5.4 (Berkeley) 5/12/91
 *
 * $Id: mk-amd-map.c,v 5.2.1.4 91/05/07 22:18:47 jsp Alpha $
 */

/*
 * Convert a file map into an ndbm map
 */

#ifndef lint
char copyright[] = "\
@(#)Copyright (c) 1990 Jan-Simon Pendry\n\
@(#)Copyright (c) 1990 Imperial College of Science, Technology & Medicine\n\
@(#)Copyright (c) 1990 The Regents of the University of California.\n\
@(#)All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char rcsid[] = "$Id: mk-amd-map.c,v 5.2.1.4 91/05/07 22:18:47 jsp Alpha $";
static char sccsid[] = "@(#)mk-amd-map.c        5.4 (Berkeley) 5/12/91";
#endif /* not lint */

#include "am.h"

#ifndef SIGINT
#include <signal.h>
#endif

#ifdef OS_HAS_NDBM
#define HAS_DATABASE
#include <ndbm.h>

#define create_database(name) dbm_open(name, O_RDWR|O_CREAT, 0444)

static int store_data(db, k, v)
voidp db;
char *k, *v;
{
        datum key, val;

        key.dptr = k; val.dptr = v;
        key.dsize = strlen(k) + 1;
        val.dsize = strlen(v) + 1;
        return dbm_store((DBM *) db, key, val, DBM_INSERT);
}

#endif /* OS_HAS_NDBM */

#ifdef HAS_DATABASE
#include <fcntl.h>
#include <ctype.h>

static int read_line(buf, size, fp)
char *buf;
int size;
FILE *fp;
{
        int done = 0;

        do {
                while (fgets(buf, size, fp)) {
                        int len = strlen(buf);
                        done += len;
                        if (len > 1 && buf[len-2] == '\\' &&
                                        buf[len-1] == '\n') {
                                int ch;
                                buf += len - 2;
                                size -= len - 2;
                                *buf = '\n'; buf[1] = '\0';
                                /*
                                 * Skip leading white space on next line
                                 */
                                while ((ch = getc(fp)) != EOF &&
                                        isascii(ch) && isspace(ch))
                                                ;
                                (void) ungetc(ch, fp);
                        } else {
                                return done;
                        }
                }
        } while (size > 0 && !feof(fp));

        return done;
}

/*
 * Read through a map
 */
static int read_file(fp, map, db)
FILE *fp;
char *map;
voidp db;
{
        char key_val[2048];
        int chuck = 0;
        int line_no = 0;
        int errs = 0;

        while (read_line(key_val, sizeof(key_val), fp)) {
                char *kp;
                char *cp;
                char *hash;
                int len = strlen(key_val);
                line_no++;

                /*
                 * Make sure we got the whole line
                 */
                if (key_val[len-1] != '\n') {
                        fprintf(stderr, "line %d in \"%s\" is too long", line_no, map);
                        chuck = 1;
                } else {
                        key_val[len-1] = '\0';
                }

                /*
                 * Strip comments
                 */
                hash = strchr(key_val, '#');
                if (hash)
                        *hash = '\0';

                /*
                 * Find start of key
                 */
                for (kp = key_val; *kp && isascii(*kp) && isspace(*kp); kp++)
                        ;

                /*
                 * Ignore blank lines
                 */
                if (!*kp)
                        goto again;

                /*
                 * Find end of key
                 */
                for (cp = kp; *cp&&(!isascii(*cp)||!isspace(*cp)); cp++)
                        ;

                /*
                 * Check whether key matches, or whether
                 * the entry is a wildcard entry.
                 */
                if (*cp)
                        *cp++ = '\0';
                while (*cp && isascii(*cp) && isspace(*cp))
                        cp++;
                if (*kp == '+') {
                        fprintf(stderr, "Can't interpolate %s\n", kp);
                        errs++;
                } else if (*cp) {
                        if (db) {
                                if (store_data(db, kp, cp) < 0) {
                                        fprintf(stderr, "Could store %s -> %s\n", kp, cp);
                                        errs++;
                                }
                        } else {
                                printf("%s\t%s\n", kp, cp);
                        }
                } else {
                        fprintf(stderr, "%s: line %d has no value field", map, line_no);
                        errs++;
                }

again:
                /*
                 * If the last read didn't get a whole line then
                 * throw away the remainder before continuing...
                 */
                if (chuck) {
                        while (fgets(key_val, sizeof(key_val), fp) &&
                                !strchr(key_val, '\n'))
                                        ;
                        chuck = 0;
                }
        }
        return errs;
}

static int remove_file(f)
char *f;
{
        if (unlink(f) < 0 && errno != ENOENT)
                return -1;
        return 0;
}

main(argc, argv)
int argc;
char *argv[];
{
        FILE *mapf;
        char *map;
        int rc = 0;
        DBM *mapd;
        static char maptmp[] = "dbmXXXXXX";
        char maptpag[16], maptdir[16];
        char *mappag, *mapdir;
        int len;
        char *sl;
        int printit = 0;
        int usage = 0;
        int ch;
        extern int optind;

        while ((ch = getopt(argc, argv, "p")) != EOF)
        switch (ch) {
        case 'p':
                printit = 1;
                break;
        default:
                usage++;
                break;
        }

        if (usage || optind != (argc - 1)) {
                fputs("Usage: mk-amd-map [-p] file-map\n", stderr);
                exit(1);
        }

        map = argv[optind];
        sl = strrchr(map, '/');
        if (sl) {
                *sl = '\0';
                if (chdir(map) < 0) {
                        fputs("Can't chdir to ", stderr);
                        perror(map);
                        exit(1);
                }
                map = sl + 1;
        }

        if (!printit) {
                len = strlen(map);
                mappag = (char *) malloc(len + 5);
                mapdir = (char *) malloc(len + 5);
                if (!mappag || !mapdir) {
                        perror("mk-amd-map: malloc");
                        exit(1);
                }
                mktemp(maptmp);
                sprintf(maptpag, "%s.pag", maptmp);
                sprintf(maptdir, "%s.dir", maptmp);
                if (remove_file(maptpag) < 0 || remove_file(maptdir) < 0) {
                        fprintf(stderr, "Can't remove existing temporary files; %s and", maptpag);
                        perror(maptdir);
                        exit(1);
                }
        }

        mapf =  fopen(map, "r");
        if (mapf && !printit)
                mapd = create_database(maptmp);
        else
                mapd = 0;

#ifndef DEBUG
        signal(SIGINT, SIG_IGN);
#endif

        if (mapd || printit) {
                int error = read_file(mapf, map, mapd);
                (void) fclose(mapf);
                if (printit) {
                        if (error) {
                                fprintf(stderr, "Error creating ndbm map for %s\n", map);
                                rc = 1;
                        }
                } else {
                        if (error) {
                                fprintf(stderr, "Error reading source file  %s\n", map);
                                rc = 1;
                        } else {
                                sprintf(mappag, "%s.pag", map);
                                sprintf(mapdir, "%s.dir", map);
                                if (rename(maptpag, mappag) < 0) {
                                        fprintf(stderr, "Couldn't rename %s to ", maptpag);
                                        perror(mappag);
                                        /* Throw away the temporary map */
                                        unlink(maptpag);
                                        unlink(maptdir);
                                        rc = 1;
                                } else if (rename(maptdir, mapdir) < 0) {
                                        fprintf(stderr, "Couldn't rename %s to ", maptdir);
                                        perror(mapdir);
                                        /* Put the .pag file back */
                                        rename(mappag, maptpag);
                                        /* Throw away remaining part of original map */
                                        unlink(mapdir);
                                        fprintf(stderr,
                                                "WARNING: existing map \"%s.{dir,pag}\" destroyed\n",
                                                map);
                                        rc = 1;
                                }
                        }
                }
        } else {
                fprintf(stderr, "Can't open \"%s.{dir,pag}\" for ", map);
                perror("writing");
                rc = 1;
        }
        exit(rc);
}
#else
main()
{
        fputs("mk-amd-map: This system does not support hashed database files\n", stderr);
        exit(1);
}
#endif /* HAS_DATABASE */