2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
514 lines
14 KiB
C
514 lines
14 KiB
C
/* $NetBSD: unvis.c,v 1.32 2010/11/27 21:22:11 christos Exp $ */
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/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)unvis.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: unvis.c,v 1.32 2010/11/27 21:22:11 christos Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <vis.h>
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#ifdef __weak_alias
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__weak_alias(strunvis,_strunvis)
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#endif
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#if !HAVE_VIS
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/*
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* decode driven by state machine
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*/
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#define S_GROUND 0 /* haven't seen escape char */
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#define S_START 1 /* start decoding special sequence */
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#define S_META 2 /* metachar started (M) */
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#define S_META1 3 /* metachar more, regular char (-) */
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#define S_CTRL 4 /* control char started (^) */
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#define S_OCTAL2 5 /* octal digit 2 */
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#define S_OCTAL3 6 /* octal digit 3 */
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#define S_HEX1 7 /* http hex digit */
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#define S_HEX2 8 /* http hex digit 2 */
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#define S_MIME1 9 /* mime hex digit 1 */
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#define S_MIME2 10 /* mime hex digit 2 */
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#define S_EATCRNL 11 /* mime eating CRNL */
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#define S_AMP 12 /* seen & */
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#define S_NUMBER 13 /* collecting number */
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#define S_STRING 14 /* collecting string */
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#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
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#define xtod(c) (isdigit(c) ? (c - '0') : ((tolower(c) - 'a') + 10))
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#define XTOD(c) (isdigit(c) ? (c - '0') : ((c - 'A') + 10))
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/*
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* RFC 1866
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*/
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static const struct nv {
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const char *name;
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uint8_t value;
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} nv[] = {
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{ "AElig", 198 }, /* capital AE diphthong (ligature) */
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{ "Aacute", 193 }, /* capital A, acute accent */
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{ "Acirc", 194 }, /* capital A, circumflex accent */
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{ "Agrave", 192 }, /* capital A, grave accent */
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{ "Aring", 197 }, /* capital A, ring */
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{ "Atilde", 195 }, /* capital A, tilde */
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{ "Auml", 196 }, /* capital A, dieresis or umlaut mark */
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{ "Ccedil", 199 }, /* capital C, cedilla */
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{ "ETH", 208 }, /* capital Eth, Icelandic */
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{ "Eacute", 201 }, /* capital E, acute accent */
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{ "Ecirc", 202 }, /* capital E, circumflex accent */
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{ "Egrave", 200 }, /* capital E, grave accent */
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{ "Euml", 203 }, /* capital E, dieresis or umlaut mark */
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{ "Iacute", 205 }, /* capital I, acute accent */
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{ "Icirc", 206 }, /* capital I, circumflex accent */
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{ "Igrave", 204 }, /* capital I, grave accent */
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{ "Iuml", 207 }, /* capital I, dieresis or umlaut mark */
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{ "Ntilde", 209 }, /* capital N, tilde */
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{ "Oacute", 211 }, /* capital O, acute accent */
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{ "Ocirc", 212 }, /* capital O, circumflex accent */
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{ "Ograve", 210 }, /* capital O, grave accent */
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{ "Oslash", 216 }, /* capital O, slash */
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{ "Otilde", 213 }, /* capital O, tilde */
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{ "Ouml", 214 }, /* capital O, dieresis or umlaut mark */
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{ "THORN", 222 }, /* capital THORN, Icelandic */
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{ "Uacute", 218 }, /* capital U, acute accent */
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{ "Ucirc", 219 }, /* capital U, circumflex accent */
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{ "Ugrave", 217 }, /* capital U, grave accent */
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{ "Uuml", 220 }, /* capital U, dieresis or umlaut mark */
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{ "Yacute", 221 }, /* capital Y, acute accent */
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{ "aacute", 225 }, /* small a, acute accent */
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{ "acirc", 226 }, /* small a, circumflex accent */
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{ "acute", 180 }, /* acute accent */
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{ "aelig", 230 }, /* small ae diphthong (ligature) */
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{ "agrave", 224 }, /* small a, grave accent */
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{ "amp", 38 }, /* ampersand */
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{ "aring", 229 }, /* small a, ring */
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{ "atilde", 227 }, /* small a, tilde */
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{ "auml", 228 }, /* small a, dieresis or umlaut mark */
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{ "brvbar", 166 }, /* broken (vertical) bar */
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{ "ccedil", 231 }, /* small c, cedilla */
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{ "cedil", 184 }, /* cedilla */
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{ "cent", 162 }, /* cent sign */
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{ "copy", 169 }, /* copyright sign */
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{ "curren", 164 }, /* general currency sign */
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{ "deg", 176 }, /* degree sign */
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{ "divide", 247 }, /* divide sign */
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{ "eacute", 233 }, /* small e, acute accent */
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{ "ecirc", 234 }, /* small e, circumflex accent */
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{ "egrave", 232 }, /* small e, grave accent */
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{ "eth", 240 }, /* small eth, Icelandic */
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{ "euml", 235 }, /* small e, dieresis or umlaut mark */
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{ "frac12", 189 }, /* fraction one-half */
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{ "frac14", 188 }, /* fraction one-quarter */
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{ "frac34", 190 }, /* fraction three-quarters */
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{ "gt", 62 }, /* greater than */
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{ "iacute", 237 }, /* small i, acute accent */
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{ "icirc", 238 }, /* small i, circumflex accent */
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{ "iexcl", 161 }, /* inverted exclamation mark */
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{ "igrave", 236 }, /* small i, grave accent */
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{ "iquest", 191 }, /* inverted question mark */
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{ "iuml", 239 }, /* small i, dieresis or umlaut mark */
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{ "laquo", 171 }, /* angle quotation mark, left */
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{ "lt", 60 }, /* less than */
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{ "macr", 175 }, /* macron */
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{ "micro", 181 }, /* micro sign */
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{ "middot", 183 }, /* middle dot */
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{ "nbsp", 160 }, /* no-break space */
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{ "not", 172 }, /* not sign */
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{ "ntilde", 241 }, /* small n, tilde */
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{ "oacute", 243 }, /* small o, acute accent */
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{ "ocirc", 244 }, /* small o, circumflex accent */
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{ "ograve", 242 }, /* small o, grave accent */
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{ "ordf", 170 }, /* ordinal indicator, feminine */
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{ "ordm", 186 }, /* ordinal indicator, masculine */
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{ "oslash", 248 }, /* small o, slash */
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{ "otilde", 245 }, /* small o, tilde */
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{ "ouml", 246 }, /* small o, dieresis or umlaut mark */
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{ "para", 182 }, /* pilcrow (paragraph sign) */
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{ "plusmn", 177 }, /* plus-or-minus sign */
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{ "pound", 163 }, /* pound sterling sign */
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{ "quot", 34 }, /* double quote */
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{ "raquo", 187 }, /* angle quotation mark, right */
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{ "reg", 174 }, /* registered sign */
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{ "sect", 167 }, /* section sign */
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{ "shy", 173 }, /* soft hyphen */
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{ "sup1", 185 }, /* superscript one */
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{ "sup2", 178 }, /* superscript two */
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{ "sup3", 179 }, /* superscript three */
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{ "szlig", 223 }, /* small sharp s, German (sz ligature) */
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{ "thorn", 254 }, /* small thorn, Icelandic */
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{ "times", 215 }, /* multiply sign */
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{ "uacute", 250 }, /* small u, acute accent */
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{ "ucirc", 251 }, /* small u, circumflex accent */
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{ "ugrave", 249 }, /* small u, grave accent */
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{ "uml", 168 }, /* umlaut (dieresis) */
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{ "uuml", 252 }, /* small u, dieresis or umlaut mark */
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{ "yacute", 253 }, /* small y, acute accent */
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{ "yen", 165 }, /* yen sign */
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{ "yuml", 255 }, /* small y, dieresis or umlaut mark */
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};
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/*
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* unvis - decode characters previously encoded by vis
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*/
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int
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unvis(char *cp, int c, int *astate, int flag)
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{
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unsigned char uc = (unsigned char)c;
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unsigned char st, ia, is, lc;
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/*
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* Bottom 8 bits of astate hold the state machine state.
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* Top 8 bits hold the current character in the http 1866 nv string decoding
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*/
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#define GS(a) ((a) & 0xff)
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#define SS(a, b) (((uint32_t)(a) << 24) | (b))
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#define GI(a) ((uint32_t)(a) >> 24)
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_DIAGASSERT(cp != NULL);
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_DIAGASSERT(astate != NULL);
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st = GS(*astate);
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if (flag & UNVIS_END) {
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switch (st) {
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case S_OCTAL2:
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case S_OCTAL3:
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case S_HEX2:
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case S_GROUND:
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return UNVIS_NOCHAR;
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default:
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return UNVIS_SYNBAD;
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}
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}
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switch (st) {
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case S_GROUND:
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*cp = 0;
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if ((flag & VIS_NOESCAPE) == 0 && c == '\\') {
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*astate = SS(0, S_START);
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return UNVIS_NOCHAR;
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}
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if ((flag & VIS_HTTP1808) && c == '%') {
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*astate = SS(0, S_HEX1);
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return UNVIS_NOCHAR;
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}
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if ((flag & VIS_HTTP1866) && c == '&') {
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*astate = SS(0, S_AMP);
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return UNVIS_NOCHAR;
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}
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if ((flag & VIS_MIMESTYLE) && c == '=') {
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*astate = SS(0, S_MIME1);
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return UNVIS_NOCHAR;
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}
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*cp = c;
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return UNVIS_VALID;
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case S_START:
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switch(c) {
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case '\\':
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*cp = c;
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case '0': case '1': case '2': case '3':
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case '4': case '5': case '6': case '7':
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*cp = (c - '0');
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*astate = SS(0, S_OCTAL2);
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return UNVIS_NOCHAR;
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case 'M':
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*cp = (char)0200;
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*astate = SS(0, S_META);
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return UNVIS_NOCHAR;
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case '^':
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*astate = SS(0, S_CTRL);
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return UNVIS_NOCHAR;
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case 'n':
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*cp = '\n';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 'r':
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*cp = '\r';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 'b':
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*cp = '\b';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 'a':
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*cp = '\007';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 'v':
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*cp = '\v';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 't':
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*cp = '\t';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 'f':
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*cp = '\f';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 's':
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*cp = ' ';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case 'E':
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*cp = '\033';
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case '\n':
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/*
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* hidden newline
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*/
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*astate = SS(0, S_GROUND);
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return UNVIS_NOCHAR;
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case '$':
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/*
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* hidden marker
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*/
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*astate = SS(0, S_GROUND);
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return UNVIS_NOCHAR;
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}
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goto bad;
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case S_META:
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if (c == '-')
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*astate = SS(0, S_META1);
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else if (c == '^')
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*astate = SS(0, S_CTRL);
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else
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goto bad;
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return UNVIS_NOCHAR;
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case S_META1:
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*astate = SS(0, S_GROUND);
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*cp |= c;
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return UNVIS_VALID;
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case S_CTRL:
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if (c == '?')
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*cp |= 0177;
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else
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*cp |= c & 037;
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case S_OCTAL2: /* second possible octal digit */
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if (isoctal(uc)) {
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/*
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* yes - and maybe a third
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*/
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*cp = (*cp << 3) + (c - '0');
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*astate = SS(0, S_OCTAL3);
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return UNVIS_NOCHAR;
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}
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/*
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* no - done with current sequence, push back passed char
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*/
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*astate = SS(0, S_GROUND);
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return UNVIS_VALIDPUSH;
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case S_OCTAL3: /* third possible octal digit */
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*astate = SS(0, S_GROUND);
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if (isoctal(uc)) {
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*cp = (*cp << 3) + (c - '0');
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return UNVIS_VALID;
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}
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/*
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* we were done, push back passed char
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*/
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return UNVIS_VALIDPUSH;
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case S_HEX1:
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if (isxdigit(uc)) {
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*cp = xtod(uc);
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*astate = SS(0, S_HEX2);
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return UNVIS_NOCHAR;
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}
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/*
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* no - done with current sequence, push back passed char
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*/
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*astate = SS(0, S_GROUND);
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return UNVIS_VALIDPUSH;
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case S_HEX2:
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*astate = S_GROUND;
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if (isxdigit(uc)) {
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*cp = xtod(uc) | (*cp << 4);
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return UNVIS_VALID;
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}
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return UNVIS_VALIDPUSH;
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case S_MIME1:
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if (uc == '\n' || uc == '\r') {
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*astate = SS(0, S_EATCRNL);
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return UNVIS_NOCHAR;
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}
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if (isxdigit(uc) && (isdigit(uc) || isupper(uc))) {
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*cp = XTOD(uc);
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*astate = SS(0, S_MIME2);
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return UNVIS_NOCHAR;
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}
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goto bad;
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case S_MIME2:
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if (isxdigit(uc) && (isdigit(uc) || isupper(uc))) {
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*astate = SS(0, S_GROUND);
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*cp = XTOD(uc) | (*cp << 4);
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return UNVIS_VALID;
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}
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goto bad;
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case S_EATCRNL:
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switch (uc) {
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case '\r':
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case '\n':
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return UNVIS_NOCHAR;
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case '=':
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*astate = SS(0, S_MIME1);
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return UNVIS_NOCHAR;
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default:
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*cp = uc;
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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}
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case S_AMP:
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*cp = 0;
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if (uc == '#') {
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*astate = SS(0, S_NUMBER);
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return UNVIS_NOCHAR;
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}
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*astate = SS(0, S_STRING);
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/*FALLTHROUGH*/
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case S_STRING:
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ia = *cp; /* index in the array */
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is = GI(*astate); /* index in the string */
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lc = is == 0 ? 0 : nv[ia].name[is - 1]; /* last character */
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if (uc == ';')
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uc = '\0';
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for (; ia < __arraycount(nv); ia++) {
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if (is != 0 && nv[ia].name[is - 1] != lc)
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goto bad;
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if (nv[ia].name[is] == uc)
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break;
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}
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if (*cp == __arraycount(nv))
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goto bad;
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if (uc != 0) {
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*cp = ia;
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*astate = SS(is + 1, S_STRING);
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return UNVIS_NOCHAR;
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}
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*cp = nv[ia].value;
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*astate = SS(0, S_GROUND);
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return UNVIS_VALID;
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case S_NUMBER:
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if (uc == ';')
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return UNVIS_VALID;
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if (!isdigit(uc))
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goto bad;
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*cp += (*cp * 10) + uc - '0';
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return UNVIS_NOCHAR;
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default:
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bad:
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/*
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* decoder in unknown state - (probably uninitialized)
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*/
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*astate = SS(0, S_GROUND);
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return UNVIS_SYNBAD;
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}
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}
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/*
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* strunvis - decode src into dst
|
|
*
|
|
* Number of chars decoded into dst is returned, -1 on error.
|
|
* Dst is null terminated.
|
|
*/
|
|
|
|
int
|
|
strunvisx(char *dst, const char *src, int flag)
|
|
{
|
|
char c;
|
|
char *start = dst;
|
|
int state = 0;
|
|
|
|
_DIAGASSERT(src != NULL);
|
|
_DIAGASSERT(dst != NULL);
|
|
|
|
while ((c = *src++) != '\0') {
|
|
again:
|
|
switch (unvis(dst, c, &state, flag)) {
|
|
case UNVIS_VALID:
|
|
dst++;
|
|
break;
|
|
case UNVIS_VALIDPUSH:
|
|
dst++;
|
|
goto again;
|
|
case 0:
|
|
case UNVIS_NOCHAR:
|
|
break;
|
|
default:
|
|
return (-1);
|
|
}
|
|
}
|
|
if (unvis(dst, c, &state, UNVIS_END) == UNVIS_VALID)
|
|
dst++;
|
|
*dst = '\0';
|
|
return (int)(dst - start);
|
|
}
|
|
|
|
int
|
|
strunvis(char *dst, const char *src)
|
|
{
|
|
return strunvisx(dst, src, 0);
|
|
}
|
|
#endif
|