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freebsd/usr.sbin/ckdist/ckdist.c

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/*
* Copyright (c) 1997 Robert Nordier
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <md5.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
extern int crc(int fd, uint32_t *cval, off_t *clen);
#define DISTMD5 1 /* MD5 format */
#define DISTINF 2 /* .inf format */
#define DISTTYPES 2 /* types supported */
#define E_UNKNOWN 1 /* Unknown format */
#define E_BADMD5 2 /* Invalid MD5 format */
#define E_BADINF 3 /* Invalid .inf format */
#define E_NAME 4 /* Can't derive component name */
#define E_LENGTH 5 /* Length mismatch */
#define E_CHKSUM 6 /* Checksum mismatch */
#define E_ERRNO 7 /* sys_errlist[errno] */
#define isfatal(err) ((err) && (err) <= E_NAME)
#define NAMESIZE 256 /* filename buffer size */
#define MDSUMLEN 32 /* length of MD5 message digest */
#define isstdin(path) ((path)[0] == '-' && !(path)[1])
static const char *opt_dir; /* where to look for components */
static const char *opt_name; /* name for accessing components */
static int opt_all; /* report on all components */
static int opt_ignore; /* ignore missing components */
static int opt_recurse; /* search directories recursively */
static int opt_silent; /* silent about inaccessible files */
static int opt_type; /* dist type: md5 or inf */
static int opt_exist; /* just verify existence */
static int ckdist(const char *path, int type);
static int chkmd5(FILE * fp, const char *path);
static int chkinf(FILE * fp, const char *path);
static int report(const char *path, const char *name, int error);
static const char *distname(const char *path, const char *name,
const char *ext);
static const char *stripath(const char *path);
static int distfile(const char *path);
static int disttype(const char *name);
static int fail(const char *path, const char *msg);
static void usage(void);
int
main(int argc, char *argv[])
{
static char *arg[2];
struct stat sb;
FTS *ftsp;
FTSENT *f;
int rval, c, type;
while ((c = getopt(argc, argv, "ad:in:rst:x")) != -1)
switch (c) {
case 'a':
opt_all = 1;
break;
case 'd':
opt_dir = optarg;
break;
case 'i':
opt_ignore = 1;
break;
case 'n':
opt_name = optarg;
break;
case 'r':
opt_recurse = 1;
break;
case 's':
opt_silent = 1;
break;
case 't':
if ((opt_type = disttype(optarg)) == 0) {
warnx("illegal argument to -t option");
usage();
}
break;
case 'x':
opt_exist = 1;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
if (opt_dir) {
if (stat(opt_dir, &sb))
err(2, "%s", opt_dir);
if (!S_ISDIR(sb.st_mode))
errx(2, "%s: not a directory", opt_dir);
}
rval = 0;
do {
if (isstdin(*argv))
rval |= ckdist(*argv, opt_type);
else if (stat(*argv, &sb))
rval |= fail(*argv, NULL);
else if (S_ISREG(sb.st_mode))
rval |= ckdist(*argv, opt_type);
else {
arg[0] = *argv;
if ((ftsp = fts_open(arg, FTS_LOGICAL, NULL)) == NULL)
err(2, "fts_open");
while ((f = fts_read(ftsp)) != NULL)
switch (f->fts_info) {
case FTS_DC:
rval = fail(f->fts_path, "Directory causes a cycle");
break;
case FTS_DNR:
case FTS_ERR:
case FTS_NS:
rval = fail(f->fts_path, sys_errlist[f->fts_errno]);
break;
case FTS_D:
if (!opt_recurse && f->fts_level > FTS_ROOTLEVEL &&
fts_set(ftsp, f, FTS_SKIP))
err(2, "fts_set");
break;
case FTS_F:
if ((type = distfile(f->fts_name)) != 0 &&
(!opt_type || type == opt_type))
rval |= ckdist(f->fts_path, type);
break;
default: ;
}
if (errno)
err(2, "fts_read");
if (fts_close(ftsp))
err(2, "fts_close");
}
} while (*++argv);
return rval;
}
static int
ckdist(const char *path, int type)
{
FILE *fp;
int rval, c;
if (isstdin(path)) {
path = "(stdin)";
fp = stdin;
} else if ((fp = fopen(path, "r")) == NULL)
return fail(path, NULL);
if (!type) {
if (fp != stdin)
type = distfile(path);
if (!type)
if ((c = fgetc(fp)) != EOF) {
type = c == 'M' ? DISTMD5 : c == 'P' ? DISTINF : 0;
(void)ungetc(c, fp);
}
}
switch (type) {
case DISTMD5:
rval = chkmd5(fp, path);
break;
case DISTINF:
rval = chkinf(fp, path);
break;
default:
rval = report(path, NULL, E_UNKNOWN);
}
if (ferror(fp))
warn("%s", path);
if (fp != stdin && fclose(fp))
err(2, "%s", path);
return rval;
}
static int
chkmd5(FILE * fp, const char *path)
{
char buf[298]; /* "MD5 (NAMESIZE = MDSUMLEN" */
char name[NAMESIZE + 1];
char sum[MDSUMLEN + 1], chk[MDSUMLEN + 1];
const char *dname;
char *s;
int rval, error, c, fd;
char ch;
rval = 0;
while (fgets(buf, sizeof(buf), fp)) {
dname = NULL;
error = 0;
if (((c = sscanf(buf, "MD5 (%256s = %32s%c", name, sum,
&ch)) != 3 && (!feof(fp) || c != 2)) ||
(c == 3 && ch != '\n') ||
(s = strrchr(name, ')')) == NULL ||
strlen(sum) != MDSUMLEN)
error = E_BADMD5;
else {
*s = 0;
if ((dname = distname(path, name, NULL)) == NULL)
error = E_NAME;
else if (opt_exist) {
if ((fd = open(dname, O_RDONLY)) == -1)
error = E_ERRNO;
else if (close(fd))
err(2, "%s", dname);
} else if (!MD5File(dname, chk))
error = E_ERRNO;
else if (strcmp(chk, sum))
error = E_CHKSUM;
}
if (opt_ignore && error == E_ERRNO && errno == ENOENT)
continue;
if (error || opt_all)
rval |= report(path, dname, error);
if (isfatal(error))
break;
}
return rval;
}
static int
chkinf(FILE * fp, const char *path)
{
char buf[30]; /* "cksum.2 = 10 6" */
char ext[3];
struct stat sb;
const char *dname;
off_t len;
u_long sum;
intmax_t sumlen;
uint32_t chk;
int rval, error, c, pieces, cnt, fd;
char ch;
rval = 0;
for (cnt = -1; fgets(buf, sizeof(buf), fp); cnt++) {
fd = -1;
dname = NULL;
error = 0;
if (cnt == -1) {
if ((c = sscanf(buf, "Pieces = %d%c", &pieces, &ch)) != 2 ||
ch != '\n' || pieces < 1)
error = E_BADINF;
} else if (((c = sscanf(buf, "cksum.%2s = %lu %jd%c", ext, &sum,
&sumlen, &ch)) != 4 &&
(!feof(fp) || c != 3)) || (c == 4 && ch != '\n') ||
ext[0] != 'a' + cnt / 26 || ext[1] != 'a' + cnt % 26)
error = E_BADINF;
else if ((dname = distname(fp == stdin ? NULL : path, NULL,
ext)) == NULL)
error = E_NAME;
else if ((fd = open(dname, O_RDONLY)) == -1)
error = E_ERRNO;
else if (fstat(fd, &sb))
error = E_ERRNO;
else if (sb.st_size != (off_t)sumlen)
error = E_LENGTH;
else if (!opt_exist) {
if (crc(fd, &chk, &len))
error = E_ERRNO;
else if (chk != sum)
error = E_CHKSUM;
}
if (fd != -1 && close(fd))
err(2, "%s", dname);
if (opt_ignore && error == E_ERRNO && errno == ENOENT)
continue;
if (error || (opt_all && cnt >= 0))
rval |= report(path, dname, error);
if (isfatal(error))
break;
}
return rval;
}
static int
report(const char *path, const char *name, int error)
{
if (name)
name = stripath(name);
switch (error) {
case E_UNKNOWN:
printf("%s: Unknown format\n", path);
break;
case E_BADMD5:
printf("%s: Invalid MD5 format\n", path);
break;
case E_BADINF:
printf("%s: Invalid .inf format\n", path);
break;
case E_NAME:
printf("%s: Can't derive component name\n", path);
break;
case E_LENGTH:
printf("%s: %s: Size mismatch\n", path, name);
break;
case E_CHKSUM:
printf("%s: %s: Checksum mismatch\n", path, name);
break;
case E_ERRNO:
printf("%s: %s: %s\n", path, name, sys_errlist[errno]);
break;
default:
printf("%s: %s: OK\n", path, name);
}
return error != 0;
}
static const char *
distname(const char *path, const char *name, const char *ext)
{
static char buf[NAMESIZE];
size_t plen, nlen;
char *s;
if (opt_name)
name = opt_name;
else if (!name) {
if (!path)
return NULL;
name = stripath(path);
}
nlen = strlen(name);
if (ext && nlen > 4 && name[nlen - 4] == '.' &&
disttype(name + nlen - 3) == DISTINF)
nlen -= 4;
if (opt_dir) {
path = opt_dir;
plen = strlen(path);
} else
plen = path && (s = strrchr(path, '/')) != NULL ?
(size_t)(s - path) : 0;
if (plen + (plen > 0) + nlen + (ext ? 3 : 0) >= sizeof(buf))
return NULL;
s = buf;
if (plen) {
memcpy(s, path, plen);
s += plen;
*s++ = '/';
}
memcpy(s, name, nlen);
s += nlen;
if (ext) {
*s++ = '.';
memcpy(s, ext, 2);
s += 2;
}
*s = 0;
return buf;
}
static const char *
stripath(const char *path)
{
const char *s;
return ((s = strrchr(path, '/')) != NULL && s[1] ?
s + 1 : path);
}
static int
distfile(const char *path)
{
const char *s;
int type;
if ((type = disttype(path)) == DISTMD5 ||
((s = strrchr(path, '.')) != NULL && s > path &&
(type = disttype(s + 1)) != 0))
return type;
return 0;
}
static int
disttype(const char *name)
{
static const char dname[DISTTYPES][4] = {"md5", "inf"};
int i;
for (i = 0; i < DISTTYPES; i++)
if (!strcmp(dname[i], name))
return 1 + i;
return 0;
}
static int
fail(const char *path, const char *msg)
{
if (opt_silent)
return 0;
warnx("%s: %s", path, msg ? msg : sys_errlist[errno]);
return 2;
}
static void
usage(void)
{
fprintf(stderr,
"usage: ckdist [-airsx] [-d dir] [-n name] [-t type] file ...\n");
exit(2);
}
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