400 lines
9.9 KiB
C
400 lines
9.9 KiB
C
/*
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* Copyright (c) 1997-2006 Erez Zadok
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* Copyright (c) 1990 Jan-Simon Pendry
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* File: am-utils/mk-amd-map/mk-amd-map.c
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*/
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/*
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* Convert a file map into an ndbm map
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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/* (libdb version 2) uses .db extensions but an old dbm API */
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/* check for libgdbm to distinguish it from linux systems */
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#if defined(DBM_SUFFIX) && !defined(HAVE_LIBGDBM)
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# define HAVE_DB_SUFFIX
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#endif /* not defined(DBM_SUFFIX) && !defined(HAVE_LIBGDBM) */
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#ifdef HAVE_MAP_NDBM
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static int
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store_data(voidp db, char *k, char *v)
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{
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datum key, val;
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key.dptr = k;
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val.dptr = v;
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key.dsize = strlen(k) + 1;
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val.dsize = strlen(v) + 1;
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return dbm_store((DBM *) db, key, val, DBM_INSERT);
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}
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/*
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* Read one line from file.
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*/
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static int
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read_line(char *buf, int size, FILE *fp)
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{
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int done = 0;
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do {
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while (fgets(buf, size, fp)) {
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int len = strlen(buf);
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done += len;
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if (len > 1 && buf[len - 2] == '\\' && buf[len - 1] == '\n') {
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int ch;
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buf += len - 2;
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size -= len - 2;
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*buf = '\n';
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buf[1] = '\0';
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/*
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* Skip leading white space on next line
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*/
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while ((ch = getc(fp)) != EOF && isascii(ch) && isspace(ch)) ;
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(void) ungetc(ch, fp);
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} else {
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return done;
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}
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}
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} while (size > 0 && !feof(fp));
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return done;
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}
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/*
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* Read through a map.
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*/
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static int
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read_file(FILE *fp, char *map, voidp db)
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{
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char key_val[2048];
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int chuck = 0;
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int line_no = 0;
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int errs = 0;
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while (read_line(key_val, 2048, fp)) {
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char *kp;
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char *cp;
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char *hash;
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int len = strlen(key_val);
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line_no++;
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/*
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* Make sure we got the whole line
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*/
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if (key_val[len - 1] != '\n') {
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fprintf(stderr, "line %d in \"%s\" is too long", line_no, map);
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chuck = 1;
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} else {
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key_val[len - 1] = '\0';
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}
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/*
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* Strip comments
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*/
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hash = strchr(key_val, '#');
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if (hash)
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*hash = '\0';
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/*
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* Find start of key
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*/
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for (kp = key_val; *kp && isascii(*kp) && isspace((int)*kp); kp++) ;
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/*
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* Ignore blank lines
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*/
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if (!*kp)
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goto again;
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/*
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* Find end of key
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*/
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for (cp = kp; *cp && (!isascii(*cp) || !isspace((int)*cp)); cp++) ;
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/*
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* Check whether key matches, or whether
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* the entry is a wildcard entry.
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*/
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if (*cp)
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*cp++ = '\0';
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while (*cp && isascii(*cp) && isspace((int)*cp))
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cp++;
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if (*kp == '+') {
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fprintf(stderr, "Can't interpolate %s\n", kp);
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errs++;
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} else if (*cp) {
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if (db) {
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if (store_data(db, kp, cp) < 0) {
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fprintf(stderr, "Could store %s -> %s\n", kp, cp);
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errs++;
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}
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} else {
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printf("%s\t%s\n", kp, cp);
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}
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} else {
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fprintf(stderr, "%s: line %d has no value field", map, line_no);
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errs++;
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}
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again:
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/*
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* If the last read didn't get a whole line then
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* throw away the remainder before continuing...
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*/
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if (chuck) {
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while (fgets(key_val, sizeof(key_val), fp) &&
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!strchr(key_val, '\n')) ;
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chuck = 0;
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}
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}
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return errs;
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}
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static int
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remove_file(char *f)
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{
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if (unlink(f) < 0 && errno != ENOENT)
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return -1;
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return 0;
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}
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int
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main(int argc, char *argv[])
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{
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FILE *mapf; /* the input file to read from */
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int error;
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char *mapsrc;
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DBM *db = NULL;
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static char maptmp[] = "dbmXXXXXX";
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#ifdef HAVE_DB_SUFFIX
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char maptdb[16];
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char *map_name_db = (char *) NULL;
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#else /* not HAVE_DB_SUFFIX */
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char maptpag[16], maptdir[16];
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char *map_name_pag = (char *) NULL, *map_name_dir = (char *) NULL;
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#endif /* not HAVE_DB_SUFFIX */
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size_t l = 0;
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char *sl;
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int printit = 0;
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int usage = 0;
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int ch;
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extern int optind;
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/* test options */
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while ((ch = getopt(argc, argv, "p")) != -1)
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switch (ch) {
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case 'p':
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printit = 1;
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break;
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default:
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usage++;
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break;
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}
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if (usage || optind != (argc - 1)) {
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fputs("Usage: mk-amd-map [-p] file-map\n", stderr);
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exit(1);
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}
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mapsrc = argv[optind];
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/* test if can get to the map directory */
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sl = strrchr(mapsrc, '/');
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if (sl) {
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*sl = '\0';
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if (chdir(mapsrc) < 0) {
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fputs("Can't chdir to ", stderr);
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perror(mapsrc);
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exit(1);
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}
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mapsrc = sl + 1;
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}
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/* open source file */
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mapf = fopen(mapsrc, "r");
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if (!mapf) {
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fprintf(stderr, "cannot open source file ");
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perror(mapsrc);
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exit(1);
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}
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#ifndef DEBUG
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signal(SIGINT, SIG_IGN);
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#endif /* DEBUG */
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if (!printit) {
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/* enough space for ".db" or ".pag" or ".dir" appended */
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l = strlen(mapsrc) + 5;
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#ifdef HAVE_DB_SUFFIX
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map_name_db = (char *) malloc(l);
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error = (map_name_db == NULL);
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#else /* not HAVE_DB_SUFFIX */
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map_name_pag = (char *) malloc(l);
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map_name_dir = (char *) malloc(l);
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error = (map_name_pag == NULL || map_name_dir == NULL);
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#endif /* not HAVE_DB_SUFFIX */
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if (error) {
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perror("mk-amd-map: malloc");
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exit(1);
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}
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#ifdef HAVE_MKSTEMP
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{
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/*
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* XXX: hack to avoid compiler complaints about mktemp not being
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* secure, since we have to do a dbm_open on this anyway. So use
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* mkstemp if you can, and then close the fd, but we get a safe
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* and unique file name.
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*/
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int dummyfd;
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dummyfd = mkstemp(maptmp);
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if (dummyfd >= 0)
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close(dummyfd);
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}
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#else /* not HAVE_MKSTEMP */
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mktemp(maptmp);
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#endif /* not HAVE_MKSTEMP */
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/* remove existing temps (if any) */
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#ifdef HAVE_DB_SUFFIX
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xsnprintf(maptdb, sizeof(maptdb), "%s.db", maptmp);
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if (remove_file(maptdb) < 0) {
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fprintf(stderr, "Can't remove existing temporary file; ");
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perror(maptdb);
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exit(1);
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}
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#else /* not HAVE_DB_SUFFIX */
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xsnprintf(maptpag, sizeof(maptpag), "%s.pag", maptmp);
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xsnprintf(maptdir, sizeof(maptdir), "%s.dir", maptmp);
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if (remove_file(maptpag) < 0 || remove_file(maptdir) < 0) {
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fprintf(stderr, "Can't remove existing temporary files; %s and ", maptpag);
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perror(maptdir);
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exit(1);
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}
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#endif /* not HAVE_DB_SUFFIX */
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db = dbm_open(maptmp, O_RDWR|O_CREAT|O_EXCL, 0444);
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if (!db) {
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fprintf(stderr, "cannot initialize temporary database: %s", maptmp);
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exit(1);
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}
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}
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/* print db to stdout or to temp database */
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error = read_file(mapf, mapsrc, db);
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fclose(mapf);
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if (error) {
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if (printit)
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fprintf(stderr, "Error reading source file %s\n", mapsrc);
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else
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fprintf(stderr, "Error creating database map for %s\n", mapsrc);
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exit(1);
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}
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if (printit)
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exit(0); /* nothing more to do */
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/* if gets here, we wrote to a database */
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dbm_close(db);
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/* all went well */
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#ifdef HAVE_DB_SUFFIX
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/* sizeof(map_name_db) is malloc'ed above */
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xsnprintf(map_name_db, l, "%s.db", mapsrc);
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if (rename(maptdb, map_name_db) < 0) {
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fprintf(stderr, "Couldn't rename %s to ", maptdb);
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perror(map_name_db);
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/* Throw away the temporary map */
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unlink(maptdb);
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exit(1);
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}
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#else /* not HAVE_DB_SUFFIX */
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/* sizeof(map_name_{pag,dir}) are malloc'ed above */
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xsnprintf(map_name_pag, l, "%s.pag", mapsrc);
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xsnprintf(map_name_dir, l, "%s.dir", mapsrc);
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if (rename(maptpag, map_name_pag) < 0) {
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fprintf(stderr, "Couldn't rename %s to ", maptpag);
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perror(map_name_pag);
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/* Throw away the temporary map */
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unlink(maptpag);
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unlink(maptdir);
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exit(1);
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}
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if (rename(maptdir, map_name_dir) < 0) {
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fprintf(stderr, "Couldn't rename %s to ", maptdir);
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perror(map_name_dir);
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/* remove the (presumably bad) .pag file */
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unlink(map_name_pag);
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/* throw away remaining part of original map */
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unlink(map_name_dir);
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/* throw away the temporary map */
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unlink(maptdir);
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fprintf(stderr, "WARNING: existing map \"%s.{dir,pag}\" destroyed\n",
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mapsrc);
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exit(1);
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}
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#endif /* not HAVE_DB_SUFFIX */
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exit(0);
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}
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#else /* not HAVE_MAP_NDBM */
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int
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main()
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{
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fputs("mk-amd-map: This system does not support hashed database files\n", stderr);
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exit(1);
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}
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#endif /* not HAVE_MAP_NDBM */
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