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"
49 unsigned lineno = 1;
50
51 static char * handle_string(void);
52 static int lex_input(char *, int);
53 static int lex_classic_input(void);
54
55 struct 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
71 TRUE { return kw_TRUE; }
72 FALSE { return kw_FALSE; }
73 AND { return kw_AND; }
74 OR { return kw_OR; }
75 IN { return kw_IN; }
76 TAILMATCH { 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
88 static char *
89 handle_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
119 int
yywrap()120 yywrap ()
121 {
122 return 1;
123 }
124
125 static int
lex_input(char * buf,int max_size)126 lex_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