1 /*****************************************************************************
2 * http.h: Headers for the HTTP interface
3 *****************************************************************************
4 * Copyright (C) 2001-2007 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
8 * Laurent Aimar <fenrir@via.ecp.fr>
9 * Christophe Massiot <massiot@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
29 /*****************************************************************************
31 *****************************************************************************/
32 #include <vlc_common.h>
35 #include <vlc_interface.h>
36 #include <vlc_playlist.h>
39 #include <vlc_vout.h> /* for fullscreen */
41 #include <vlc_httpd.h>
43 #include <vlc_network.h>
45 #include <vlc_charset.h>
49 #elif defined( WIN32 ) && !defined( UNDER_CE )
57 /* stat() support for large files on win32 */
58 #if defined( WIN32 ) && !defined( UNDER_CE )
59 # define stat _stati64
62 /** \defgroup http_intf HTTP Interface
63 * This is the HTTP remote control interface. It is fully customizable
64 * by writing HTML pages using custom <vlc> tags.
66 * These tags use so-called macros.
68 * These macros can manipulate variables. For more complex operations,
69 * a custom RPN evaluator with many built-in functions is provided.
73 /*****************************************************************************
75 *****************************************************************************/
76 #define MAX_DIR_SIZE 2560
77 #define STACK_MAX 100 //< Maximum RPN stack size
80 /*****************************************************************************
82 *****************************************************************************/
84 /** \defgroup http_utils Utilities
90 /* File and directory functions */
92 /** This function recursively parses a directory and adds all files */
93 int ParseDirectory( intf_thread_t *p_intf, char *psz_root,
95 /** This function loads a file into a buffer */
96 int FileLoad( FILE *f, char **pp_data, int *pi_data );
97 /** This function creates a suitable URL for a filename */
98 char *FileToUrl( char *name, bool *pb_index );
99 /** This function returns the real path of a file or directory */
100 char *RealPath( const char *psz_src );
102 /** This command parses the "seek" command for the HTTP interface
103 * and performs the requested action */
104 void HandleSeek( intf_thread_t *p_intf, char *p_value );
106 /* URI Handling functions */
108 /** This function extracts the value for a given argument name
109 * from an HTTP request */
110 const char *ExtractURIValue( const char *restrict psz_uri,
111 const char *restrict psz_name,
112 char *restrict psz_value, size_t i_value_max );
113 char *ExtractURIString( const char *restrict psz_uri,
114 const char *restrict psz_name );
115 /** \todo Describe this function */
116 int TestURIParam( char *psz_uri, const char *psz_name );
118 /** This function parses a MRL */
119 input_item_t *MRLParse( intf_thread_t *, const char *psz, char *psz_name );
121 /** Return the first word from a string (works in-place) */
122 char *FirstWord( char *psz, char *new );
126 /****************************************************************************
127 * Variable handling functions
128 ****************************************************************************/
130 /** \defgroup http_vars Macro variables
132 * These variables can be used in the <vlc> macros and in the RPN evaluator.
133 * The variables make a tree: each variable can have an arbitrary
134 * number of "children" variables.
135 * A number of helper functions are provided to manipulate the main variable
142 * This structure defines a macro variable
144 typedef struct mvar_s
146 char *name; ///< Variable name
147 char *value; ///< Variable value
149 int i_field; ///< Number of children variables
150 struct mvar_s **field; ///< Children variables array
154 /** This function creates a new variable */
155 mvar_t *mvar_New( const char *name, const char *value );
156 /** This function deletes a variable */
157 void mvar_Delete( mvar_t *v );
158 /** This function adds f to the children variables of v, at last position */
159 void mvar_AppendVar( mvar_t *v, mvar_t *f );
160 /** This function duplicates a variable */
161 mvar_t *mvar_Duplicate( const mvar_t *v );
162 /** This function adds f to the children variables of v, at fist position */
163 void mvar_PushVar( mvar_t *v, mvar_t *f );
164 /** This function removes f from the children variables of v */
165 void mvar_RemoveVar( mvar_t *v, mvar_t *f );
166 /** This function retrieves the child variable named "name" */
167 mvar_t *mvar_GetVar( mvar_t *s, const char *name );
168 /** This function retrieves the value of the child variable named "field" */
169 const char *mvar_GetValue( mvar_t *v, const char *field );
170 /** This function creates a variable with the given name and value and
171 * adds it as first child of vars */
172 void mvar_PushNewVar( mvar_t *vars, const char *name,
174 /** This function creates a variable with the given name and value and
175 * adds it as last child of vars */
176 void mvar_AppendNewVar( mvar_t *vars, const char *name,
180 /** \defgroup http_sets Sets *
182 * Sets are an application of the macro variables. There are a number of
183 * predefined functions that will give you variables whose children represent
184 * VLC internal data (playlist, stream info, ...)
188 /** This function creates a set variable which represents a series of integer
189 * The arg parameter must be of the form "start[:stop[:step]]" */
190 mvar_t *mvar_IntegerSetNew( const char *name, const char *arg );
192 /** This function creates a set variable with a list of VLC objects */
193 mvar_t *mvar_ObjectSetNew( intf_thread_t *p_intf, char *name, const char *arg );
195 /** This function creates a set variable with the contents of the playlist */
196 mvar_t *mvar_PlaylistSetNew( intf_thread_t *p_intf, char *name,
198 /** This function creates a set variable with the contents of the Stream
199 * and media info box */
200 mvar_t *mvar_InfoSetNew( char *name, input_thread_t *p_input );
201 /** This function creates a set variable with the input parameters */
202 mvar_t *mvar_InputVarSetNew( intf_thread_t *p_intf, char *name,
203 input_thread_t *p_input,
204 const char *psz_variable );
205 /** This function creates a set variable representing the files of the psz_dir
207 mvar_t *mvar_FileSetNew( intf_thread_t *p_intf, char *name,
209 /** This function creates a set variable representing the VLM streams */
210 mvar_t *mvar_VlmSetNew( char *name, vlm_t *vlm );
212 /** This function converts the listing of a playlist node into a mvar set */
213 void PlaylistListNode( intf_thread_t *p_intf, playlist_t *p_pl,
214 playlist_item_t *p_node, char *name, mvar_t *s,
219 /*****************************************************************************
221 *****************************************************************************/
223 /** \defgroup http_rpn RPN Evaluator
229 * \struct rpn_stack_t
230 * This structure represents a stack of RPN commands for the HTTP interface
231 * It is attached to a request
235 char *stack[STACK_MAX];
239 /** This function creates the RPN evaluator stack */
240 void SSInit( rpn_stack_t * );
241 /** This function cleans the evaluator stack */
242 void SSClean( rpn_stack_t * );
243 /* Evaluate and execute the RPN Stack */
244 void EvaluateRPN( intf_thread_t *p_intf, mvar_t *vars,
245 rpn_stack_t *st, char *exp );
247 /* Push an operand on top of the RPN stack */
248 void SSPush ( rpn_stack_t *, const char * );
249 /* Remove the first operand from the RPN Stack */
250 char *SSPop ( rpn_stack_t * );
251 /* Pushes an operand at a given position in the stack */
252 void SSPushN ( rpn_stack_t *, int );
253 /* Removes an operand at the given position in the stack */
254 int SSPopN ( rpn_stack_t *, mvar_t * );
259 /****************************************************************************
260 * Macro handling (<vlc ... stuff)
261 ****************************************************************************/
263 /** \defgroup http_macros <vlc> Macros Handling
265 * A macro is a code snippet in the HTML page looking like
266 * <vlc id="macro_id" param1="value1" param2="value2">
267 * Macros string ids are mapped to macro types, and specific handling code
268 * must be written for each macro type
274 * This structure represents a HTTP Interface macro.
278 char *id; ///< Macro ID string
279 char *param1; ///< First parameter
280 char *param2; ///< Second parameter
283 /** This function parses a file for macros */
284 void Execute( httpd_file_sys_t *p_args,
285 char *p_request, int i_request,
286 char **pp_data, int *pi_data,
288 char *_src, char *_end );
295 /** \struct httpd_file_sys_t
296 * This structure represent a single HTML file to be parsed by the macros
298 struct httpd_file_sys_t
300 intf_thread_t *p_intf;
301 httpd_file_t *p_file;
302 httpd_redirect_t *p_redir;
303 httpd_redirect_t *p_redir2;
308 bool b_html, b_handler;
310 /* inited for each access */
315 /** \struct http_association_t
316 * Structure associating an extension to an external program
318 typedef struct http_association_t
323 } http_association_t;
325 /** \struct httpd_handler_sys_t
326 * This structure represent a single CGI file to be parsed by the macros
328 struct httpd_handler_sys_t
330 httpd_file_sys_t file;
332 /* HACK ALERT: this is added below so that casting httpd_handler_sys_t
333 * to httpd_file_sys_t works */
334 httpd_handler_t *p_handler;
335 http_association_t *p_association;
338 /** \struct intf_sys_t
339 * Internal service structure for the HTTP interface
343 httpd_host_t *p_httpd_host;
346 httpd_file_sys_t **pp_files;
349 http_association_t **pp_handlers;
350 httpd_handler_t *p_art_handler;
352 playlist_t *p_playlist;
353 input_thread_t *p_input;
357 unsigned short i_port;
360 /** This function is the main HTTPD Callback used by the HTTP Interface */
361 int HttpCallback( httpd_file_sys_t *p_args,
364 uint8_t **pp_data, int *pi_data );
365 /** This function is the HTTPD Callback used for CGIs */
366 int HandlerCallback( httpd_handler_sys_t *p_args,
367 httpd_handler_t *p_handler, char *_p_url,
368 uint8_t *_p_request, int i_type,
369 uint8_t *_p_in, int i_in,
370 char *psz_remote_addr, char *psz_remote_host,
371 uint8_t **_pp_data, int *pi_data );