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fix bugs in the previous. use snprintf(). fixes the problem reported

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in PR#25131.
This commit is contained in:
mrg 2004-04-12 14:41:09 +00:00
parent 8af58b1851
commit fa97f05587
1 changed files with 21 additions and 16 deletions
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37
bin/pax/tar.c
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@ -1,4 +1,4 @@
/* $NetBSD: tar.c,v 1.48 2004/04/01 14:54:39 mrg Exp $ */
/* $NetBSD: tar.c,v 1.49 2004/04/12 14:41:09 mrg Exp $ */
/*-
* Copyright (c) 1992 Keith Muller.
@ -42,7 +42,7 @@
#if 0
static char sccsid[] = "@(#)tar.c 8.2 (Berkeley) 4/18/94";
#else
__RCSID("$NetBSD: tar.c,v 1.48 2004/04/01 14:54:39 mrg Exp $");
__RCSID("$NetBSD: tar.c,v 1.49 2004/04/12 14:41:09 mrg Exp $");
#endif
#endif /* not lint */
@ -1265,14 +1265,16 @@ name_split(char *name, int len)
static int
tar_gnutar_exclude_one(const char *line, size_t len)
{
/* 2* buffer len + 5 prefix + 5 postfix + null subst + nul */
char sbuf[MAXPATHLEN * 2 + 4 + 4 + 5 + 1];
/* 2 * buffer len + nul */
char sbuf[MAXPATHLEN * 2 + 1];
/* + / + // + .*""/\/ + \/.* */
char rabuf[MAXPATHLEN * 2 + 1 + 1 + 2 + 4 + 4];
int i, j;
if (line[len - 1] == '\n')
len--;
strncpy(sbuf, ".*" "\\/", 4);
for (i = 0, j = 4; i < len; i++) {
strncpy(sbuf, ".*" "\\/", j = 4);
for (i = 0; i < len; i++) {
/*
* convert glob to regexp, escaping everything
*/
@ -1285,18 +1287,21 @@ tar_gnutar_exclude_one(const char *line, size_t len)
sbuf[j++] = '\\';
sbuf[j++] = line[i];
}
strncpy(&sbuf[j], "$", 2);
if (rep_add(sbuf) < 0)
return (-1);
strncpy(&sbuf[j], "\\/.*", 5);
if (rep_add(sbuf) < 0)
return (-1);
/* don't need the .*\/ ones if we start with /, i guess */
if (line[0] != '/') {
snprintf(rabuf, sizeof rabuf, "/.*\\/%s$//", sbuf);
if (rep_add(rabuf) < 0)
return (-1);
snprintf(rabuf, sizeof rabuf, "/.*\\/%s\\/.*//", sbuf);
if (rep_add(rabuf) < 0)
return (-1);
}
sbuf[3] = '^';
if (rep_add(sbuf+3) < 0)
snprintf(rabuf, sizeof rabuf, "/^%s$//", sbuf);
if (rep_add(rabuf) < 0)
return (-1);
strncpy(&sbuf[j], "$", 2);
if (rep_add(sbuf+3) < 0)
snprintf(rabuf, sizeof rabuf, "/^%s\\/.*//", sbuf);
if (rep_add(rabuf) < 0)
return (-1);
return (0);