varnish-cache/include/vct.h
1
/*-
2
 * Copyright (c) 2006 Verdens Gang AS
3
 * Copyright (c) 2006-2009 Varnish Software AS
4
 * All rights reserved.
5
 *
6
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
7
 *
8
 * SPDX-License-Identifier: BSD-2-Clause
9
 *
10
 * Redistribution and use in source and binary forms, with or without
11
 * modification, are permitted provided that the following conditions
12
 * are met:
13
 * 1. Redistributions of source code must retain the above copyright
14
 *    notice, this list of conditions and the following disclaimer.
15
 * 2. Redistributions in binary form must reproduce the above copyright
16
 *    notice, this list of conditions and the following disclaimer in the
17
 *    documentation and/or other materials provided with the distribution.
18
 *
19
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
23
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29
 * SUCH DAMAGE.
30
 *
31
 */
32
33
/* from libvarnish/vct.c */
34
35
#include "vas.h"
36
37
#define VCT_OWS                 (1<<0)
38
#define VCT_CRLF                (1<<1)
39
#define VCT_LWS                 (VCT_CRLF | VCT_OWS)
40
#define VCT_CTL                 (1<<2)
41
#define VCT_ALPHA               (1<<3)
42
#define VCT_SEPARATOR           (1<<4)
43
#define VCT_DIGIT               (1<<5)
44
#define VCT_HEX                 (1<<6)
45
#define VCT_XMLNAMESTART        (1<<7)
46
#define VCT_XMLNAME             (1<<8)
47
#define VCT_TCHAR               (1<<9)
48
#define VCT_ID                  (1<<10)
49
#define VCT_IDENT               (VCT_ALPHA | VCT_DIGIT | VCT_ID)
50
#define VCT_BASE64              (1<<11)
51
#define VCT_VT                  (1<<12)
52
#define VCT_SPACE               (VCT_LWS | VCT_VT)
53
#define VCT_UPPER               (1<<13)
54
#define VCT_LOWER               (1<<14)
55
56
extern const uint16_t vct_typtab[256];
57
58
const char *VCT_invalid_name(const char *b, const char *e);
59
60
static inline int
61 333740658
vct_is(int x, uint16_t y)
62
{
63
64 333740658
        x &= 0xff;
65 333740658
        return (vct_typtab[x] & (y));
66
}
67
68
#define vct_isows(x) vct_is(x, VCT_OWS)
69
#define vct_issp(x) vct_is(x, VCT_OWS)
70
#define vct_ishex(x) vct_is(x, VCT_HEX)
71
#define vct_islws(x) vct_is(x, VCT_LWS)
72
#define vct_isctl(x) vct_is(x, VCT_CTL)
73
#define vct_isspace(x) vct_is(x, VCT_SPACE)
74
#define vct_isdigit(x) vct_is(x, VCT_DIGIT)
75
#define vct_isalpha(x) vct_is(x, VCT_ALPHA)
76
#define vct_islower(x) vct_is(x, VCT_LOWER)
77
#define vct_isupper(x) vct_is(x, VCT_UPPER)
78
#define vct_isalnum(x) vct_is(x, VCT_ALPHA | VCT_DIGIT)
79
#define vct_isbase64(x) vct_is(x, VCT_BASE64)
80
#define vct_issep(x) vct_is(x, VCT_SEPARATOR)
81
#define vct_issepctl(x) vct_is(x, VCT_SEPARATOR | VCT_CTL)
82
#define vct_isident1(x) vct_isalpha(x)
83
#define vct_isident(x) vct_is(x, VCT_IDENT)
84
#define vct_isxmlnamestart(x) vct_is(x, VCT_XMLNAMESTART)
85
#define vct_isxmlname(x) vct_is(x, VCT_XMLNAMESTART | VCT_XMLNAME)
86
#define vct_istchar(x) vct_is(x, VCT_ALPHA | VCT_DIGIT | VCT_TCHAR)
87
#define vct_ishdrval(x) \
88
    (((uint8_t)(x) >= 0x20 && (uint8_t)(x) != 0x7f) ||(uint8_t)(x) == 0x09)
89
90
static inline int
91 13050318
vct_iscrlf(const char* p, const char* end)
92
{
93 13050318
        assert(p <= end);
94 13050578
        if (p == end)
95 0
                return (0);
96 13050482
        if ((p[0] == 0x0d && (p+1 < end) && p[1] == 0x0a)) // CR LF
97 1628396
                return (2);
98 11424443
        if (p[0] == 0x0a) // LF
99 2025
                return (1);
100 11422395
        return (0);
101 13052832
}
102
103
/* NB: VCT always operate in ASCII, don't replace 0x0d with \r etc. */
104
static inline char*
105 586858
vct_skipcrlf(char* p, const char* end)
106
{
107 586858
        return (p + vct_iscrlf(p, end));
108
}