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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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dcf118f17c
This will probably need to go away again someday when distributions get folded into packages and there are no more dist files to check, but knowing how long we've been waiting on THAT, this will be a welcome tool for the interim. Submitted by: Robert Nordier <rnordier@iafrica.com>
440 lines
11 KiB
C
440 lines
11 KiB
C
/*
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* Copyright (c) 1997 Robert Nordier
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* All rights reserved.
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*
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* $Id: ckdist.c,v 1.6 1997/01/20 16:47:06 rnordier Exp $
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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
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <fts.h>
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#include <err.h>
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#include <md5.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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extern int crc(int fd, u_long * cval, u_long * clen);
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#define DISTMD5 1 /* MD5 format */
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#define DISTINF 2 /* .inf format */
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#define DISTTYPES 2 /* types supported */
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#define E_UNKNOWN 1 /* Unknown format */
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#define E_BADMD5 2 /* Invalid MD5 format */
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#define E_BADINF 3 /* Invalid .inf format */
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#define E_NAME 4 /* Can't derive component name */
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#define E_LENGTH 5 /* Length mismatch */
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#define E_CHKSUM 6 /* Checksum mismatch */
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#define E_ERRNO 7 /* sys_errlist[errno] */
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#define isfatal(err) ((err) && (err) <= E_NAME)
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#define NAMESIZE 256 /* filename buffer size */
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#define MDSUMLEN 32 /* length of MD5 message digest */
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#define isstdin(path) ((path)[0] == '-' && !(path)[1])
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static const char *opt_dir; /* where to look for components */
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static const char *opt_name; /* name for accessing components */
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static int opt_all; /* report on all components */
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static int opt_ignore; /* ignore missing components */
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static int opt_recurse; /* search directories recursively */
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static int opt_silent; /* silent about inaccessible files */
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static int opt_type; /* dist type: md5 or inf */
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static int opt_exist; /* just verify existence */
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static int ckdist(const char *path, int type);
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static int chkmd5(FILE * fp, const char *path);
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static int chkinf(FILE * fp, const char *path);
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static int report(const char *path, const char *name, int error);
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static const char *distname(const char *path, const char *name,
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const char *ext);
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static char *stripath(const char *path);
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static int distfile(const char *path);
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static int disttype(const char *name);
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static int fail(const char *path, const char *msg);
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static void usage(void);
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int
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main(int argc, char *argv[])
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{
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static char *arg[2];
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struct stat sb;
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FTS *ftsp;
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FTSENT *f;
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int rval, c, type;
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while ((c = getopt(argc, argv, "ad:in:rst:x")) != -1)
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switch (c) {
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case 'a':
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opt_all = 1;
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break;
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case 'd':
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opt_dir = optarg;
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break;
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case 'i':
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opt_ignore = 1;
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break;
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case 'n':
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opt_name = optarg;
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break;
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case 'r':
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opt_recurse = 1;
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break;
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case 's':
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opt_silent = 1;
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break;
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case 't':
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if ((opt_type = disttype(optarg)) == 0) {
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warnx("illegal argument to -t option");
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usage();
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}
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break;
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case 'x':
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opt_exist = 1;
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break;
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc < 1)
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usage();
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if (opt_dir) {
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if (stat(opt_dir, &sb))
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err(2, opt_dir);
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if (!S_ISDIR(sb.st_mode))
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errx(2, "%s: Not a directory", opt_dir);
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}
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rval = 0;
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do {
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if (isstdin(*argv))
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rval |= ckdist(*argv, opt_type);
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else if (stat(*argv, &sb))
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rval |= fail(*argv, NULL);
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else if (S_ISREG(sb.st_mode))
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rval |= ckdist(*argv, opt_type);
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else {
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arg[0] = *argv;
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if ((ftsp = fts_open(arg, FTS_LOGICAL, NULL)) == NULL)
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err(2, "fts_open");
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while ((f = fts_read(ftsp)) != NULL)
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switch (f->fts_info) {
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case FTS_DC:
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rval = fail(f->fts_path, "Directory causes a cycle");
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break;
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case FTS_DNR:
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case FTS_ERR:
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case FTS_NS:
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rval = fail(f->fts_path, sys_errlist[f->fts_errno]);
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break;
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case FTS_D:
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if (!opt_recurse && f->fts_level > FTS_ROOTLEVEL &&
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fts_set(ftsp, f, FTS_SKIP))
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err(2, "fts_set");
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break;
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case FTS_F:
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if ((type = distfile(f->fts_name)) != 0 &&
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(!opt_type || type == opt_type))
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rval |= ckdist(f->fts_path, type);
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break;
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default: ;
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}
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if (errno)
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err(2, "fts_read");
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if (fts_close(ftsp))
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err(2, "fts_close");
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}
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} while (*++argv);
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return rval;
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}
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static int
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ckdist(const char *path, int type)
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{
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FILE *fp;
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int rval, c;
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if (isstdin(path)) {
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path = "(stdin)";
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fp = stdin;
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} else if ((fp = fopen(path, "r")) == NULL)
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return fail(path, NULL);
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if (!type) {
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if (fp != stdin)
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type = distfile(path);
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if (!type)
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if ((c = fgetc(fp)) != EOF) {
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type = c == 'M' ? DISTMD5 : c == 'P' ? DISTINF : 0;
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(void)ungetc(c, fp);
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}
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}
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switch (type) {
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case DISTMD5:
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rval = chkmd5(fp, path);
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break;
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case DISTINF:
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rval = chkinf(fp, path);
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break;
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default:
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rval = report(path, NULL, E_UNKNOWN);
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}
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if (ferror(fp))
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warn(path);
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if (fp != stdin && fclose(fp))
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err(2, path);
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return rval;
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}
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static int
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chkmd5(FILE * fp, const char *path)
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{
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char buf[298]; /* "MD5 (NAMESIZE = MDSUMLEN" */
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char name[NAMESIZE + 1];
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char sum[MDSUMLEN + 1], chk[MDSUMLEN + 1];
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const char *dname;
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char *s;
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int rval, error, c, fd;
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char ch;
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rval = 0;
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while (fgets(buf, sizeof(buf), fp)) {
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dname = NULL;
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error = 0;
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if (((c = sscanf(buf, "MD5 (%256s = %32s%c", name, sum,
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&ch)) != 3 && (!feof(fp) || c != 2)) ||
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(c == 3 && ch != '\n') ||
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(s = strrchr(name, ')')) == NULL ||
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strlen(sum) != MDSUMLEN)
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error = E_BADMD5;
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else {
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*s = 0;
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if ((dname = distname(path, name, NULL)) == NULL)
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error = E_NAME;
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else if (opt_exist) {
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if ((fd = open(dname, O_RDONLY)) == -1)
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error = E_ERRNO;
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else if (close(fd))
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err(2, dname);
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} else if (!MD5File((char *)dname, chk))
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error = E_ERRNO;
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else if (strcmp(chk, sum))
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error = E_CHKSUM;
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}
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if (opt_ignore && error == E_ERRNO && errno == ENOENT)
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continue;
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if (error || opt_all)
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rval |= report(path, dname, error);
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if (isfatal(error))
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break;
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}
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return rval;
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}
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static int
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chkinf(FILE * fp, const char *path)
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{
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char buf[30]; /* "cksum.2 = 10 6" */
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char ext[3];
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struct stat sb;
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const char *dname;
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u_long sum, len, chk;
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int rval, error, c, pieces, cnt, fd;
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char ch;
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rval = 0;
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for (cnt = -1; fgets(buf, sizeof(buf), fp); cnt++) {
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fd = -1;
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dname = NULL;
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error = 0;
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if (cnt == -1) {
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if ((c = sscanf(buf, "Pieces = %d%c", &pieces, &ch)) != 2 ||
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ch != '\n' || pieces < 1)
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error = E_BADINF;
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} else if (((c = sscanf(buf, "cksum.%2s = %lu %lu%c", ext, &sum,
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&len, &ch)) != 4 &&
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(!feof(fp) || c != 3)) || (c == 4 && ch != '\n') ||
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ext[0] != 'a' + cnt / 26 || ext[1] != 'a' + cnt % 26)
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error = E_BADINF;
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else if ((dname = distname(fp == stdin ? NULL : path, NULL,
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ext)) == NULL)
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error = E_NAME;
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else if ((fd = open(dname, O_RDONLY)) == -1)
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error = E_ERRNO;
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else if (fstat(fd, &sb))
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error = E_ERRNO;
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else if (sb.st_size != (off_t)len)
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error = E_LENGTH;
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else if (!opt_exist) {
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if (crc(fd, &chk, &len))
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error = E_ERRNO;
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else if (chk != sum)
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error = E_CHKSUM;
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}
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if (fd != -1 && close(fd))
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err(2, dname);
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if (opt_ignore && error == E_ERRNO && errno == ENOENT)
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continue;
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if (error || (opt_all && cnt >= 0))
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rval |= report(path, dname, error);
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if (isfatal(error))
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break;
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}
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return rval;
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}
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static int
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report(const char *path, const char *name, int error)
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{
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if (name)
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name = stripath(name);
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switch (error) {
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case E_UNKNOWN:
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printf("%s: Unknown format\n", path);
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break;
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case E_BADMD5:
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printf("%s: Invalid MD5 format\n", path);
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break;
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case E_BADINF:
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printf("%s: Invalid .inf format\n", path);
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break;
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case E_NAME:
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printf("%s: Can't derive component name\n", path);
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break;
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case E_LENGTH:
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printf("%s: %s: Size mismatch\n", path, name);
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break;
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case E_CHKSUM:
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printf("%s: %s: Checksum mismatch\n", path, name);
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break;
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case E_ERRNO:
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printf("%s: %s: %s\n", path, name, sys_errlist[errno]);
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break;
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default:
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printf("%s: %s: OK\n", path, name);
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}
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return error != 0;
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}
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static const char *
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distname(const char *path, const char *name, const char *ext)
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{
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static char buf[NAMESIZE];
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size_t plen, nlen;
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char *s;
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if (opt_name)
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name = opt_name;
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else if (!name) {
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if (!path)
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return NULL;
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name = stripath(path);
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}
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nlen = strlen(name);
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if (ext && nlen > 4 && name[nlen - 4] == '.' &&
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disttype(name + nlen - 3) == DISTINF)
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nlen -= 4;
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if (opt_dir) {
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path = opt_dir;
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plen = strlen(path);
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} else
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plen = path && (s = strrchr(path, '/')) != NULL ?
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(size_t)(s - path) : 0;
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if (plen + (plen > 0) + nlen + (ext ? 3 : 0) >= sizeof(buf))
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return NULL;
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s = buf;
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if (plen) {
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memcpy(s, path, plen);
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s += plen;
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*s++ = '/';
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}
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memcpy(s, name, nlen);
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s += nlen;
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if (ext) {
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*s++ = '.';
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memcpy(s, ext, 2);
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s += 2;
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}
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*s = 0;
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return buf;
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}
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static char *
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stripath(const char *path)
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{
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const char *s;
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return (char *)((s = strrchr(path, '/')) != NULL && s[1] ?
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s + 1 : path);
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}
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static int
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distfile(const char *path)
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{
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const char *s;
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int type;
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if ((type = disttype(path)) == DISTMD5 ||
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((s = strrchr(path, '.')) != NULL && s > path &&
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(type = disttype(s + 1)) != 0))
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return type;
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return 0;
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}
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static int
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disttype(const char *name)
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{
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static const char dname[DISTTYPES][4] = {"md5", "inf"};
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int i;
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for (i = 0; i < DISTTYPES; i++)
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if (!strcmp(dname[i], name))
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return 1 + i;
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return 0;
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}
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static int
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fail(const char *path, const char *msg)
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{
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if (opt_silent)
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return 0;
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warnx("%s: %s", path, msg ? msg : sys_errlist[errno]);
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return 2;
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}
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: ckdist [-airsx] [-d dir] [-n name] [-t type] file"
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" ...\n");
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exit(2);
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}
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