diff options
Diffstat (limited to 'crypto/openssh/openbsd-compat/vis.c')
| -rw-r--r-- | crypto/openssh/openbsd-compat/vis.c | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/crypto/openssh/openbsd-compat/vis.c b/crypto/openssh/openbsd-compat/vis.c index fc57413..e6a2ce9 100644 --- a/crypto/openssh/openbsd-compat/vis.c +++ b/crypto/openssh/openbsd-compat/vis.c @@ -10,11 +10,7 @@ * 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 + * 3. 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. * @@ -30,14 +26,15 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ -#include "config.h" +#include "includes.h" #if !defined(HAVE_STRNVIS) #if defined(LIBC_SCCS) && !defined(lint) -static char rcsid[] = "$OpenBSD: vis.c,v 1.8 2002/02/19 19:39:36 millert Exp $"; +static char rcsid[] = "$OpenBSD: vis.c,v 1.12 2003/06/02 20:18:35 millert Exp $"; #endif /* LIBC_SCCS and not lint */ #include <ctype.h> +#include <string.h> #include "vis.h" @@ -47,8 +44,9 @@ static char rcsid[] = "$OpenBSD: vis.c,v 1.8 2002/02/19 19:39:36 millert Exp $"; ((flag & VIS_SP) == 0 && (c) == ' ') || \ ((flag & VIS_TAB) == 0 && (c) == '\t') || \ ((flag & VIS_NL) == 0 && (c) == '\n') || \ - ((flag & VIS_SAFE) && \ - ((c) == '\b' || (c) == '\007' || (c) == '\r'))) + ((flag & VIS_SAFE) && ((c) == '\b' || \ + (c) == '\007' || (c) == '\r' || \ + isgraph((u_char)(c))))) /* * vis - visually encode characters @@ -169,16 +167,20 @@ strvis(dst, src, flag) int strnvis(dst, src, siz, flag) - register char *dst; - register const char *src; + char *dst; + const char *src; size_t siz; int flag; { - register char c; + char c; char *start, *end; + char tbuf[5]; + int i; + i = 0; for (start = dst, end = start + siz - 1; (c = *src) && dst < end; ) { if (isvisible(c)) { + i = 1; *dst++ = c; if (c == '\\' && (flag & VIS_NOSLASH) == 0) { /* need space for the extra '\\' */ @@ -186,22 +188,25 @@ strnvis(dst, src, siz, flag) *dst++ = '\\'; else { dst--; + i = 2; break; } } src++; } else { - /* vis(3) requires up to 4 chars */ - if (dst + 3 < end) - dst = vis(dst, c, flag, *++src); - else + i = vis(tbuf, c, flag, *++src) - tbuf; + if (dst + i <= end) { + memcpy(dst, tbuf, i); + dst += i; + } else { + src--; break; + } } } - *dst = '\0'; - if (dst >= end) { - char tbuf[5]; - + if (siz > 0) + *dst = '\0'; + if (dst + i > end) { /* adjust return value for truncation */ while ((c = *src)) dst += vis(tbuf, c, flag, *++src) - tbuf; |
