/*! \file quote.c Based on webfs Copyright (C) 1999-2001 Gerd Knorr This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License with the Debian GNU/Linux distribution in file /usr/share/common-licenses/GPL; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Description: html quoting/unquoting functions $Id: quote.c,v 1.1.1.1 2004/12/23 05:52:34 s_zander Exp $ */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "httpd.h" static char do_quote[256]; void init_quote(void) { int i; for (i = 0; i < 256; i++) { do_quote[i] = (isalnum(i) || ispunct(i)) ? 0 : 1; } do_quote['+'] = 1; do_quote['#'] = 1; do_quote['%'] = 1; } char *quote(unsigned char *path, int maxlength) { static unsigned char buf[2048]; /* FIXME: threads break this... */ int i,j,n=strlen(path); if (n > maxlength) { n = maxlength; } for (i=0, j=0; i if (!do_quote[path[i]]) { buf[j] = path[i]; continue; } sprintf(buf+j,"%%%02x",path[i]); j += 2; } buf[j] = 0; return buf; } static int unhex(unsigned char c) { if (c < '@') { return c - '0'; } return (c & 0x0f) + 9; } /* handle %hex quoting, also split path / querystring */ void unquote(unsigned char *path, unsigned char *qs, unsigned char *src) { int q; unsigned char *dst; q=0; dst = path; while (src[0] != 0) { if (!q && *src == '?') { q = 1; *dst = 0; dst = qs; src++; continue; } if (q && *src == '+') { *dst = ' '; } else if ((*src == '%') && isxdigit(src[1]) && isxdigit(src[2])) { *dst = (unhex(src[1]) src += 2; } else { *dst = *src; } dst++; src++; } *dst = 0; } /* handle %hex quoting */ void unquote2(unsigned char *dst, unsigned char *src) { while (src[0] != 0) { if (*src == '+') { *dst = ' '; } else if ((*src == '%') && isxdigit(src[1]) && isxdigit(src[2])) { *dst = (unhex(src[1]) src += 2; } else { *dst = *src; } dst++; src++; } *dst = 0; }
