1%{
2/*
3 * Copyright (c) 2004, 2008 Kungliga Tekniska Högskolan
4 * (Royal Institute of Technology, Stockholm, Sweden).
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * 3. Neither the name of the Institute nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35/* $Id$ */
36
37#ifdef HAVE_CONFIG_H
38#include <config.h>
39#endif
40
41#undef ECHO
42
43#include <stdio.h>
44#include <string.h>
45#include <stdarg.h>
46#include <stdlib.h>
47#include "sel.h"
48#include "sel-gram.h"
49unsigned lineno = 1;
50
51static char * handle_string(void);
52static int lex_input(char *, int);
53static int lex_classic_input(void);
54
55struct hx_expr_input _hx509_expr_input;
56
57#ifndef YY_NULL
58#define YY_NULL 0
59#endif
60
61#define YY_NO_UNPUT 1
62
63#undef YY_INPUT
64#define YY_INPUT(buf,res,maxsize) (res = lex_input(buf, maxsize))
65
66#undef ECHO
67
68%}
69%%
70
71TRUE			{ return kw_TRUE; }
72FALSE			{ return kw_FALSE; }
73AND			{ return kw_AND; }
74OR			{ return kw_OR; }
75IN			{ return kw_IN; }
76TAILMATCH		{ return kw_TAILMATCH; }
77
78[A-Za-z][-A-Za-z0-9_]*	{
79			  yylval.string = strdup ((const char *)yytext);
80			  return IDENTIFIER;
81			}
82"\""			{ yylval.string = handle_string(); return STRING; }
83\n			{ ++lineno; }
84[,.!={}()%]		{ return *yytext; }
85[ \t]			;
86%%
87
88static char *
89handle_string(void)
90{
91    char x[1024];
92    int i = 0;
93    int c;
94    int quote = 0;
95    while((c = input()) != EOF){
96	if(quote) {
97	    x[i++] = '\\';
98	    x[i++] = c;
99	    quote = 0;
100	    continue;
101	}
102	if(c == '\n'){
103	    _hx509_sel_yyerror("unterminated string");
104	    lineno++;
105	    break;
106	}
107	if(c == '\\'){
108	    quote++;
109	    continue;
110	}
111	if(c == '\"')
112	    break;
113	x[i++] = c;
114    }
115    x[i] = '\0';
116    return strdup(x);
117}
118
119int
120yywrap ()
121{
122     return 1;
123}
124
125static int
126lex_input(char *buf, int max_size)
127{
128    int n;
129
130    n = _hx509_expr_input.length - _hx509_expr_input.offset;
131    if (max_size < n)
132        n = max_size;
133    if (n <= 0)
134	return YY_NULL;
135
136    memcpy(buf, _hx509_expr_input.buf + _hx509_expr_input.offset, n);
137    _hx509_expr_input.offset += n;
138
139    return n;
140}
141