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[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 * Read raw POST/PUT data from HTTP request.
90 *
91 * @param buf buffer to read data into
92 * @param len size of the supplied buffer
93 * @return number of bytes read, < 0 on error
94 */
95 int (*read_data)(request_t *this, char *buf, int len);
96
97 /**
98 * Close the session and it's context after handling.
99 */
100 void (*close_session)(request_t *this);
101
102 /**
103 * Has the session been closed by close_session()?
104 *
105 * @return TRUE if session has been closed
106 */
107 bool (*session_closed)(request_t *this);
108
109 /**
110 * Redirect the client to another location.
111 *
112 * @param fmt location format string
113 * @param ... variable argument for fmt
114 */
115 void (*redirect)(request_t *this, char *fmt, ...);
116
117 /**
118 * Get the HTTP referer.
119 *
120 * @return HTTP referer
121 */
122 char* (*get_referer)(request_t *this);
123
124 /**
125 * Redirect back to the referer.
126 */
127 void (*to_referer)(request_t *this);
128
129 /**
130 * Set a template value.
131 *
132 * @param key key to set
133 * @param value value to set key to
134 */
135 void (*set)(request_t *this, char *key, char *value);
136
137 /**
138 * Set a template value using format strings.
139 *
140 * Format string is in the form "key=value", where printf like format
141 * substitution occurs over the whole string.
142 *
143 * @param format printf like format string
144 * @param ... variable argument list
145 */
146 void (*setf)(request_t *this, char *format, ...);
147
148 /**
149 * Render a template.
150 *
151 * The render() function additionally sets a HDF variable "base"
152 * which points to the root of the web application and allows to point to
153 * other targets without to worry about path location.
154 *
155 * @param template clearsilver template file location
156 */
157 void (*render)(request_t *this, char *template);
158
159 /**
160 * Stream a format string to the client.
161 *
162 * Stream is not closed and may be called multiple times to allow
163 * server-push functionality.
164 *
165 * @param format printf like format string
166 * @param ... argmuent list to format string
167 * @return number of streamed bytes, < 0 if stream closed
168 */
169 int (*streamf)(request_t *this, char *format, ...);
170
171 /**
172 * Serve a request with headers and a body.
173 *
174 * @param headers HTTP headers, \n separated
175 * @param chunk body to write to output
176 */
177 void (*serve)(request_t *this, char *headers, chunk_t chunk);
178
179 /**
180 * Increase the reference count to the stream.
181 *
182 * @return this with increased refcount
183 */
184 request_t* (*get_ref)(request_t *this);
185
186 /**
187 * Destroy the request_t.
188 */
189 void (*destroy) (request_t *this);
190 };
191
192 /**
193 * Create a request from the fastcgi struct.
194 *
195 * @param fd file descripter opened with FCGX_OpenSocket
196 * @param debug no stripping, no compression, timing information
197 */
198 request_t *request_create(int fd, bool debug);
199
200 #endif /** REQUEST_H_ @}*/