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82aa3fb80e
The strlen() could go past the n bytes and into a memory address we don't have read access to.
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2006 Red Hat, Inc.
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* Copyright © 2011 Andrea Canciani
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of the
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* copyright holders not be used in advertising or publicity
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* pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*
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* Authors: Carl Worth <cworth@cworth.org>
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* Andrea Canciani <ranma42@gmail.com>
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*/
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#include "cairo-missing.h"
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#ifndef HAVE_STRNDUP
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#include "cairo-malloc-private.h"
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char *
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strndup (const char *s,
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size_t n)
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{
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const char *end;
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size_t len;
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char *sdup;
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if (s == NULL)
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return NULL;
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end = memchr (s, 0, n);
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if (end)
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len = end - s;
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else
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len = n;
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sdup = (char *) _cairo_malloc (len + 1);
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if (sdup != NULL) {
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memcpy (sdup, s, len);
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sdup[len] = '\0';
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}
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return sdup;
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}
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#endif
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