AC_DEFINE(HAVE_SETRESUID,1,[Yay! Another Linux brokenness. Its not good enough to know that setresuid() exists, because RedHat 5.0 declare setresuid() but doesn't implement it.])
fi
+dnl Yay! This one is a MacOSX brokenness. Its not good enough
+dnl to know that strnstr() exists, because MacOSX 10.4 have a bad
+dnl copy that crashes with a buffer over-run!
+dnl
+AC_CACHE_CHECK(if strnstr is well implemented, ac_cv_func_strnstr,
+ AC_TRY_RUN([
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+ // we expect this to succeed, or crash on over-run.
+ // if it passes otherwise we may need a better check.
+int main(int argc, char **argv)
+{
+ int size = 20;
+ char *str = malloc(size);
+ memset(str, 'x', size);
+ strnstr(str, "fubar", size);
+ return 0;
+}
+ ],ac_cv_func_strnstr="yes",ac_cv_func_strnstr="no")
+)
+if test "$ac_cv_func_strnstr" = "yes" ; then
+ AC_DEFINE(HAVE_STRNSTR,1,[Yay! We have a working strnstr!])
+else
+ AC_DEFINE(HAVE_STRNSTR,0,[Yay! A MacOS X brokenness. Its not good enough to know that strnstr() exists, because MacOSX 10.4 and earlier may have a buffer overrun.])
+fi
+
+
AM_CONDITIONAL(NEED_OWN_STRSEP, false)
if test "$ac_cv_func_strsep" = "no" ; then
AM_CONDITIONAL(NEED_OWN_STRSEP, true)
--- /dev/null
+#ifndef _SQUID_COMPAT_STRNSTR_C_
+#define _SQUID_COMPAT_STRNSTR_C_
+/*
+ * Shamelessly duplicated from the FreeBSD public sources
+ * for use by the Squid Project under GNU Public License.
+ *
+ * Update/Maintenance History:
+ *
+ * 26-Apr-2008 : Copied from FreeBSD via OpenGrok
+ * - added protection around libray headers
+ * - added squid_ prefix for uniqueness
+ * so we can use it where OS copy is broken.
+ *
+ * Squid VCS $Id$
+ *
+ * Original License and code follows.
+ */
+
+#include "config.h"
+#include "strnstr.h"
+
+#if !HAVE_STRNSTR
+
+/*-
+ * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * 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.
+ *
+ * @(#)strstr.c 8.1 (Berkeley) 6/4/93
+ * $FreeBSD: src/lib/libc/string/strnstr.c,v 1.2.2.1 2001/12/09 06:50:03 mike Exp $
+ * $DragonFly: src/lib/libc/string/strnstr.c,v 1.4 2006/03/20 17:24:20 dillon Exp $
+ */
+
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#if HAVE_STRING_H
+#include <string.h>
+#endif
+
+/*
+ * Find the first occurrence of find in s, where the search is limited to the
+ * first slen characters of s.
+ */
+const char *
+squid_strnstr(const char *s, const char *find, size_t slen)
+{
+ char c, sc;
+ size_t len;
+
+ if ((c = *find++) != '\0') {
+ len = strlen(find);
+ do {
+ do {
+ if (slen < 1 || (sc = *s) == '\0')
+ return (NULL);
+ --slen;
+ ++s;
+ } while (sc != c);
+ if (len > slen)
+ return (NULL);
+ } while (strncmp(s, find, len) != 0);
+ s--;
+ }
+ return s;
+}
+
+#endif /* !HAVE_STRNSTR */
+#endif /* _SQUID_COMPAT_STRNSTR_C_ */
projects / thirdparty / squid.git / commitdiff
