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Diffstat (limited to 'source4/heimdal/lib/roken/vis.c')
| -rw-r--r-- | source4/heimdal/lib/roken/vis.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/source4/heimdal/lib/roken/vis.c b/source4/heimdal/lib/roken/vis.c new file mode 100644 index 0000000000..a4bde71e9b --- /dev/null +++ b/source4/heimdal/lib/roken/vis.c @@ -0,0 +1,330 @@ +/* $NetBSD: vis.c,v 1.4 2003/08/07 09:15:32 agc Exp $ */ + +/*- + * Copyright (c) 1989, 1993 + * The Regents of the University of California. 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. + * 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. + * + * 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. + */ + +/*- + * Copyright (c) 1999 The NetBSD Foundation, Inc. + * + * 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. + */ + + +#if 1 +#ifdef HAVE_CONFIG_H +#include <config.h> +RCSID("$Id: vis.c,v 1.9 2005/04/12 11:29:15 lha Exp $"); +#endif +#include <roken.h> +#ifndef _DIAGASSERT +#define _DIAGASSERT(X) +#endif +#else +#include <sys/cdefs.h> +#if !defined(lint) +__RCSID("$NetBSD: vis.c,v 1.4 2003/08/07 09:15:32 agc Exp $"); +#endif /* not lint */ +#endif + +#if 0 +#include "namespace.h" +#endif +#include <sys/types.h> + +#include <assert.h> +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> +#include <vis.h> + +#if 0 +#ifdef __weak_alias +__weak_alias(strsvis,_strsvis) +__weak_alias(strsvisx,_strsvisx) +__weak_alias(strvis,_strvis) +__weak_alias(strvisx,_strvisx) +__weak_alias(svis,_svis) +__weak_alias(vis,_vis) +#endif +#endif + +#undef BELL +#if defined(__STDC__) +#define BELL '\a' +#else +#define BELL '\007' +#endif + +#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7') +#define iswhite(c) (c == ' ' || c == '\t' || c == '\n') +#define issafe(c) (c == '\b' || c == BELL || c == '\r') + +#define MAXEXTRAS 5 + + +#define MAKEEXTRALIST(flag, extra) \ +do { \ + char *pextra = extra; \ + if (flag & VIS_SP) *pextra++ = ' '; \ + if (flag & VIS_TAB) *pextra++ = '\t'; \ + if (flag & VIS_NL) *pextra++ = '\n'; \ + if ((flag & VIS_NOSLASH) == 0) *pextra++ = '\\'; \ + *pextra = '\0'; \ +} while (/*CONSTCOND*/0) + +/* + * This is SVIS, the central macro of vis. + * dst: Pointer to the destination buffer + * c: Character to encode + * flag: Flag word + * nextc: The character following 'c' + * extra: Pointer to the list of extra characters to be + * backslash-protected. + */ +#define SVIS(dst, c, flag, nextc, extra) \ +do { \ + int isextra, isc; \ + isextra = strchr(extra, c) != NULL; \ + if (!isextra && \ + isascii((unsigned char)c) && \ + (isgraph((unsigned char)c) || iswhite(c) || \ + ((flag & VIS_SAFE) && issafe(c)))) { \ + *dst++ = c; \ + break; \ + } \ + isc = 0; \ + if (flag & VIS_CSTYLE) { \ + switch (c) { \ + case '\n': \ + isc = 1; *dst++ = '\\'; *dst++ = 'n'; \ + break; \ + case '\r': \ + isc = 1; *dst++ = '\\'; *dst++ = 'r'; \ + break; \ + case '\b': \ + isc = 1; *dst++ = '\\'; *dst++ = 'b'; \ + break; \ + case BELL: \ + isc = 1; *dst++ = '\\'; *dst++ = 'a'; \ + break; \ + case '\v': \ + isc = 1; *dst++ = '\\'; *dst++ = 'v'; \ + break; \ + case '\t': \ + isc = 1; *dst++ = '\\'; *dst++ = 't'; \ + break; \ + case '\f': \ + isc = 1; *dst++ = '\\'; *dst++ = 'f'; \ + break; \ + case ' ': \ + isc = 1; *dst++ = '\\'; *dst++ = 's'; \ + break; \ + case '\0': \ + isc = 1; *dst++ = '\\'; *dst++ = '0'; \ + if (isoctal(nextc)) { \ + *dst++ = '0'; \ + *dst++ = '0'; \ + } \ + } \ + } \ + if (isc) break; \ + if (isextra || ((c & 0177) == ' ') || (flag & VIS_OCTAL)) { \ + *dst++ = '\\'; \ + *dst++ = (u_char)(((unsigned)(u_char)c >> 6) & 03) + '0'; \ + *dst++ = (u_char)(((unsigned)(u_char)c >> 3) & 07) + '0'; \ + *dst++ = (c & 07) + '0'; \ + } else { \ + if ((flag & VIS_NOSLASH) == 0) *dst++ = '\\'; \ + if (c & 0200) { \ + c &= 0177; *dst++ = 'M'; \ + } \ + if (iscntrl((unsigned char)c)) { \ + *dst++ = '^'; \ + if (c == 0177) \ + *dst++ = '?'; \ + else \ + *dst++ = c + '@'; \ + } else { \ + *dst++ = '-'; *dst++ = c; \ + } \ + } \ +} while (/*CONSTCOND*/0) + + +/* + * svis - visually encode characters, also encoding the characters + * pointed to by `extra' + */ +#ifndef HAVE_SVIS +char * ROKEN_LIB_FUNCTION +svis(char *dst, int c, int flag, int nextc, const char *extra) +{ + _DIAGASSERT(dst != NULL); + _DIAGASSERT(extra != NULL); + + SVIS(dst, c, flag, nextc, extra); + *dst = '\0'; + return(dst); +} +#endif + + +/* + * strsvis, strsvisx - visually encode characters from src into dst + * + * Extra is a pointer to a \0-terminated list of characters to + * be encoded, too. These functions are useful e. g. to + * encode strings in such a way so that they are not interpreted + * by a shell. + * + * Dst must be 4 times the size of src to account for possible + * expansion. The length of dst, not including the trailing NULL, + * is returned. + * + * Strsvisx encodes exactly len bytes from src into dst. + * This is useful for encoding a block of data. + */ +#ifndef HAVE_STRSVIS +int ROKEN_LIB_FUNCTION +strsvis(char *dst, const char *src, int flag, const char *extra) +{ + char c; + char *start; + + _DIAGASSERT(dst != NULL); + _DIAGASSERT(src != NULL); + _DIAGASSERT(extra != NULL); + + for (start = dst; (c = *src++) != '\0'; /* empty */) + SVIS(dst, c, flag, *src, extra); + *dst = '\0'; + return (dst - start); +} +#endif + + +#ifndef HAVE_STRVISX +int ROKEN_LIB_FUNCTION +strsvisx(char *dst, const char *src, size_t len, int flag, const char *extra) +{ + char c; + char *start; + + _DIAGASSERT(dst != NULL); + _DIAGASSERT(src != NULL); + _DIAGASSERT(extra != NULL); + + for (start = dst; len > 0; len--) { + c = *src++; + SVIS(dst, c, flag, len ? *src : '\0', extra); + } + *dst = '\0'; + return (dst - start); +} +#endif + + +/* + * vis - visually encode characters + */ +#ifndef HAVE_VIS +char * ROKEN_LIB_FUNCTION +vis(char *dst, int c, int flag, int nextc) +{ + char extra[MAXEXTRAS]; + + _DIAGASSERT(dst != NULL); + + MAKEEXTRALIST(flag, extra); + SVIS(dst, c, flag, nextc, extra); + *dst = '\0'; + return (dst); +} +#endif + + +/* + * strvis, strvisx - visually encode characters from src into dst + * + * Dst must be 4 times the size of src to account for possible + * expansion. The length of dst, not including the trailing NULL, + * is returned. + * + * Strvisx encodes exactly len bytes from src into dst. + * This is useful for encoding a block of data. + */ +#ifndef HAVE_STRVIS +int ROKEN_LIB_FUNCTION +strvis(char *dst, const char *src, int flag) +{ + char extra[MAXEXTRAS]; + + MAKEEXTRALIST(flag, extra); + return (strsvis(dst, src, flag, extra)); +} +#endif + + +#ifndef HAVE_STRVISX +int ROKEN_LIB_FUNCTION +strvisx(char *dst, const char *src, size_t len, int flag) +{ + char extra[MAXEXTRAS]; + + MAKEEXTRALIST(flag, extra); + return (strsvisx(dst, src, len, flag, extra)); +} +#endif |