summaryrefslogtreecommitdiffstats
path: root/include/util_cookies.h
blob: 51f8facbc7095204bd73bae978d2ea0bc1a21044 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file util_cookies.h
 * @brief Apache cookie library
 */

#ifndef UTIL_COOKIES_H
#define UTIL_COOKIES_H

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @defgroup APACHE_CORE_COOKIE Cookies
 * @ingroup  APACHE_CORE
 *
 * RFC2109 and RFC2965 compliant HTTP cookies can be read from and written
 * to using this set of functions.
 *
 * @{
 *
 */

#include "apr_errno.h"
#include "httpd.h"

#define SET_COOKIE "Set-Cookie"
#define SET_COOKIE2 "Set-Cookie2"
#define DEFAULT_ATTRS "HttpOnly;Secure;Version=1"
#define CLEAR_ATTRS "Version=1"

typedef struct {
    request_rec *r;
    const char *name;
    const char *encoded;
    apr_table_t *new_cookies;
    int duplicated;
} ap_cookie_do;

/**
 * Write an RFC2109 compliant cookie.
 *
 * @param r The request
 * @param name The name of the cookie.
 * @param val The value to place in the cookie.
 * @param attrs The string containing additional cookie attributes. If NULL, the
 *              DEFAULT_ATTRS will be used.
 * @param maxage If non zero, a Max-Age header will be added to the cookie.
 * @param ... A varargs array of zero or more (apr_table_t *) tables followed by NULL
 *            to which the cookies should be added.
 */
AP_DECLARE(apr_status_t) ap_cookie_write(request_rec * r, const char *name,
                                         const char *val, const char *attrs,
                                         long maxage, ...)
                         AP_FN_ATTR_SENTINEL;

/**
 * Write an RFC2965 compliant cookie.
 *
 * @param r The request
 * @param name2 The name of the cookie.
 * @param val The value to place in the cookie.
 * @param attrs2 The string containing additional cookie attributes. If NULL, the
 *               DEFAULT_ATTRS will be used.
 * @param maxage If non zero, a Max-Age header will be added to the cookie.
 * @param ... A varargs array of zero or more (apr_table_t *) tables followed by NULL
 *            to which the cookies should be added.
 */
AP_DECLARE(apr_status_t) ap_cookie_write2(request_rec * r, const char *name2,
                                          const char *val, const char *attrs2,
                                          long maxage, ...)
                         AP_FN_ATTR_SENTINEL;

/**
 * Remove an RFC2109 compliant cookie.
 *
 * @param r The request
 * @param name The name of the cookie.
 * @param attrs The string containing additional cookie attributes. If NULL, the
 *              CLEAR_ATTRS will be used.
 * @param ... A varargs array of zero or more (apr_table_t *) tables followed by NULL
 *            to which the cookies should be added.
 */
AP_DECLARE(apr_status_t) ap_cookie_remove(request_rec * r, const char *name,
                                          const char *attrs, ...)
                         AP_FN_ATTR_SENTINEL;

/**
 * Remove an RFC2965 compliant cookie.
 *
 * @param r The request
 * @param name2 The name of the cookie.
 * @param attrs2 The string containing additional cookie attributes. If NULL, the
 *               CLEAR_ATTRS will be used.
 * @param ... A varargs array of zero or more (apr_table_t *) tables followed by NULL
 *            to which the cookies should be added.
 */
AP_DECLARE(apr_status_t) ap_cookie_remove2(request_rec * r, const char *name2,
                                           const char *attrs2, ...)
                         AP_FN_ATTR_SENTINEL;

/**
 * Read a cookie called name, placing its value in val.
 *
 * Both the Cookie and Cookie2 headers are scanned for the cookie.
 *
 * If the cookie is duplicated, this function returns APR_EGENERAL. If found,
 * and if remove is non zero, the cookie will be removed from the headers, and
 * thus kept private from the backend.
 */
AP_DECLARE(apr_status_t) ap_cookie_read(request_rec * r, const char *name, const char **val,
                                        int remove);

/**
 * Sanity check a given string that it exists, is not empty,
 * and does not contain the special characters '=', ';' and '&'.
 *
 * It is used to sanity check the cookie names.
 */
AP_DECLARE(apr_status_t) ap_cookie_check_string(const char *string);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* !UTIL_COOKIES_H */