Add a getter for the HTTP referer
[strongswan.git] / src / libfast / request.h
1 /*
2 * Copyright (C) 2007 Martin Willi
3 * Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 /**
17 * @defgroup request request
18 * @{ @ingroup libfast
19 */
20
21 #ifndef REQUEST_H_
22 #define REQUEST_H_
23
24 #include <fcgiapp.h>
25 #include <library.h>
26
27 typedef struct request_t request_t;
28
29 /**
30 * A HTTP request, encapsulates FCGX_Request.
31 *
32 * The response is also handled through the request object.
33 */
34 struct request_t {
35
36 /**
37 * Add a cookie to the reply (Set-Cookie header).
38 *
39 * @param name name of the cookie to set
40 * @param value value of the cookie
41 */
42 void (*add_cookie)(request_t *this, char *name, char *value);
43
44 /**
45 * Get a cookie the client sent in the request.
46 *
47 * @param name name of the cookie
48 * @return cookie value, NULL if no such cookie found
49 */
50 char* (*get_cookie)(request_t *this, char *name);
51
52 /**
53 * Get the request path relative to the application.
54 *
55 * @return path
56 */
57 char* (*get_path)(request_t *this);
58
59 /**
60 * Get the base path of the application.
61 *
62 * @return base path
63 */
64 char* (*get_base)(request_t *this);
65
66 /**
67 * Get the remote host address of this request.
68 *
69 * @return host address as string
70 */
71 char* (*get_host)(request_t *this);
72
73 /**
74 * Get the user agent string.
75 *
76 * @return user agent string
77 */
78 char* (*get_user_agent)(request_t *this);
79
80 /**
81 * Get a post/get variable included in the request.
82 *
83 * @param name name of the POST/GET variable
84 * @return value, NULL if not found
85 */
86 char* (*get_query_data)(request_t *this, char *name);
87
88 /**
89 * Close the session and it's context after handling.
90 */
91 void (*close_session)(request_t *this);
92
93 /**
94 * Has the session been closed by close_session()?
95 *
96 * @return TRUE if session has been closed
97 */
98 bool (*session_closed)(request_t *this);
99
100 /**
101 * Redirect the client to another location.
102 *
103 * @param fmt location format string
104 * @param ... variable argument for fmt
105 */
106 void (*redirect)(request_t *this, char *fmt, ...);
107
108 /**
109 * Get the HTTP referer.
110 *
111 * @return HTTP referer
112 */
113 char* (*get_referer)(request_t *this);
114
115 /**
116 * Redirect the client to the referer.
117 */
118 void (*to_referer)(request_t *this);
119
120 /**
121 * Set a template value.
122 *
123 * @param key key to set
124 * @param value value to set key to
125 */
126 void (*set)(request_t *this, char *key, char *value);
127
128 /**
129 * Set a template value using format strings.
130 *
131 * Format string is in the form "key=value", where printf like format
132 * substitution occurs over the whole string.
133 *
134 * @param format printf like format string
135 * @param ... variable argument list
136 */
137 void (*setf)(request_t *this, char *format, ...);
138
139 /**
140 * Render a template.
141 *
142 * The render() function additionally sets a HDF variable "base"
143 * which points to the root of the web application and allows to point to
144 * other targets without to worry about path location.
145 *
146 * @param template clearsilver template file location
147 */
148 void (*render)(request_t *this, char *template);
149
150 /**
151 * Stream a format string to the client.
152 *
153 * Stream is not closed and may be called multiple times to allow
154 * server-push functionality.
155 *
156 * @param format printf like format string
157 * @param ... argmuent list to format string
158 * @return number of streamed bytes, < 0 if stream closed
159 */
160 int (*streamf)(request_t *this, char *format, ...);
161
162 /**
163 * Serve a request with headers and a body.
164 *
165 * @param headers HTTP headers, \n separated
166 * @param chunk body to write to output
167 */
168 void (*serve)(request_t *this, char *headers, chunk_t chunk);
169
170 /**
171 * Increase the reference count to the stream.
172 *
173 * @return this with increased refcount
174 */
175 request_t* (*get_ref)(request_t *this);
176
177 /**
178 * Destroy the request_t.
179 */
180 void (*destroy) (request_t *this);
181 };
182
183 /**
184 * Create a request from the fastcgi struct.
185 *
186 * @param fd file descripter opened with FCGX_OpenSocket
187 * @param debug no stripping, no compression, timing information
188 */
189 request_t *request_create(int fd, bool debug);
190
191 #endif /** REQUEST_H_ @}*/