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>
36 #include <vlc_interface.h>
37 #include <vlc_playlist.h>
40 #include <vlc_vout.h> /* for fullscreen */
42 #include "vlc_httpd.h"
44 #include "vlc_network.h"
46 #include "vlc_charset.h"
48 #ifdef HAVE_SYS_STAT_H
49 # include <sys/stat.h>
60 #elif defined( WIN32 ) && !defined( UNDER_CE )
68 /* stat() support for large files on win32 */
69 #if defined( WIN32 ) && !defined( UNDER_CE )
70 # define stat _stati64
73 /** \defgroup http_intf HTTP Interface
74 * This is the HTTP remote control interface. It is fully customizable
75 * by writing HTML pages using custom <vlc> tags.
77 * These tags use so-called macros.
79 * These macros can manipulate variables. For more complex operations,
80 * a custom RPN evaluator with many built-in functions is provided.
84 /*****************************************************************************
86 *****************************************************************************/
87 #define MAX_DIR_SIZE 2560
88 #define STACK_MAX 100 //< Maximum RPN stack size
91 /*****************************************************************************
93 *****************************************************************************/
95 /** \defgroup http_utils Utilities
101 /* File and directory functions */
103 /** This function recursively parses a directory and adds all files */
104 int ParseDirectory( intf_thread_t *p_intf, char *psz_root,
106 /** This function loads a file into a buffer */
107 int FileLoad( FILE *f, char **pp_data, int *pi_data );
108 /** This function creates a suitable URL for a filename */
109 char *FileToUrl( char *name, bool *pb_index );
110 /** This function returns the real path of a file or directory */
111 char *RealPath( intf_thread_t *p_intf, const char *psz_src );
113 /** This command parses the "seek" command for the HTTP interface
114 * and performs the requested action */
115 void HandleSeek( intf_thread_t *p_intf, char *p_value );
117 /* URI Handling functions */
119 /** This function extracts the value for a given argument name
120 * from an HTTP request */
121 char *ExtractURIValue( char *restrict psz_uri,
122 const char *restrict psz_name,
123 char *restrict psz_value, size_t i_value_max );
124 char *ExtractURIString( char *restrict psz_uri,
125 const char *restrict psz_name );
126 /** \todo Describe this function */
127 int TestURIParam( char *psz_uri, const char *psz_name );
129 /** This function parses a MRL */
130 input_item_t *MRLParse( intf_thread_t *, char *psz, char *psz_name );
132 /** Return the first word from a string (works in-place) */
133 char *FirstWord( char *psz, char *new );
137 /****************************************************************************
138 * Variable handling functions
139 ****************************************************************************/
141 /** \defgroup http_vars Macro variables
143 * These variables can be used in the <vlc> macros and in the RPN evaluator.
144 * The variables make a tree: each variable can have an arbitrary
145 * number of "children" variables.
146 * A number of helper functions are provided to manipulate the main variable
153 * This structure defines a macro variable
155 typedef struct mvar_s
157 char *name; ///< Variable name
158 char *value; ///< Variable value
160 int i_field; ///< Number of children variables
161 struct mvar_s **field; ///< Children variables array
165 /** This function creates a new variable */
166 mvar_t *mvar_New( const char *name, const char *value );
167 /** This function deletes a variable */
168 void mvar_Delete( mvar_t *v );
169 /** This function adds f to the children variables of v, at last position */
170 void mvar_AppendVar( mvar_t *v, mvar_t *f );
171 /** This function duplicates a variable */
172 mvar_t *mvar_Duplicate( const mvar_t *v );
173 /** This function adds f to the children variables of v, at fist position */
174 void mvar_PushVar( mvar_t *v, mvar_t *f );
175 /** This function removes f from the children variables of v */
176 void mvar_RemoveVar( mvar_t *v, mvar_t *f );
177 /** This function retrieves the child variable named "name" */
178 mvar_t *mvar_GetVar( mvar_t *s, const char *name );
179 /** This function retrieves the value of the child variable named "field" */
180 char *mvar_GetValue( mvar_t *v, char *field );
181 /** This function creates a variable with the given name and value and
182 * adds it as first child of vars */
183 void mvar_PushNewVar( mvar_t *vars, const char *name,
185 /** This function creates a variable with the given name and value and
186 * adds it as last child of vars */
187 void mvar_AppendNewVar( mvar_t *vars, const char *name,
191 /** \defgroup http_sets Sets *
193 * Sets are an application of the macro variables. There are a number of
194 * predefined functions that will give you variables whose children represent
195 * VLC internal data (playlist, stream info, ...)
199 /** This function creates a set variable which represents a series of integer
200 * The arg parameter must be of the form "start[:stop[:step]]" */
201 mvar_t *mvar_IntegerSetNew( const char *name, const char *arg );
203 /** This function creates a set variable with a list of VLC objects */
204 mvar_t *mvar_ObjectSetNew( intf_thread_t *p_intf, char *name, const char *arg );
206 /** This function creates a set variable with the contents of the playlist */
207 mvar_t *mvar_PlaylistSetNew( intf_thread_t *p_intf, char *name,
209 /** This function creates a set variable with the contents of the Stream
210 * and media info box */
211 mvar_t *mvar_InfoSetNew( char *name, input_thread_t *p_input );
212 /** This function creates a set variable with the input parameters */
213 mvar_t *mvar_InputVarSetNew( intf_thread_t *p_intf, char *name,
214 input_thread_t *p_input,
215 const char *psz_variable );
216 /** This function creates a set variable representing the files of the psz_dir
218 mvar_t *mvar_FileSetNew( intf_thread_t *p_intf, char *name,
220 /** This function creates a set variable representing the VLM streams */
221 mvar_t *mvar_VlmSetNew( char *name, vlm_t *vlm );
223 /** This function converts the listing of a playlist node into a mvar set */
224 void PlaylistListNode( intf_thread_t *p_intf, playlist_t *p_pl,
225 playlist_item_t *p_node, char *name, mvar_t *s,
230 /*****************************************************************************
232 *****************************************************************************/
234 /** \defgroup http_rpn RPN Evaluator
240 * \struct rpn_stack_t
241 * This structure represents a stack of RPN commands for the HTTP interface
242 * It is attached to a request
246 char *stack[STACK_MAX];
250 /** This function creates the RPN evaluator stack */
251 void SSInit( rpn_stack_t * );
252 /** This function cleans the evaluator stack */
253 void SSClean( rpn_stack_t * );
254 /* Evaluate and execute the RPN Stack */
255 void EvaluateRPN( intf_thread_t *p_intf, mvar_t *vars,
256 rpn_stack_t *st, char *exp );
258 /* Push an operand on top of the RPN stack */
259 void SSPush ( rpn_stack_t *, const char * );
260 /* Remove the first operand from the RPN Stack */
261 char *SSPop ( rpn_stack_t * );
262 /* Pushes an operand at a given position in the stack */
263 void SSPushN ( rpn_stack_t *, int );
264 /* Removes an operand at the given position in the stack */
265 int SSPopN ( rpn_stack_t *, mvar_t * );
270 /****************************************************************************
271 * Macro handling (<vlc ... stuff)
272 ****************************************************************************/
274 /** \defgroup http_macros <vlc> Macros Handling
276 * A macro is a code snippet in the HTML page looking like
277 * <vlc id="macro_id" param1="value1" param2="value2">
278 * Macros string ids are mapped to macro types, and specific handling code
279 * must be written for each macro type
285 * This structure represents a HTTP Interface macro.
289 char *id; ///< Macro ID string
290 char *param1; ///< First parameter
291 char *param2; ///< Second parameter
294 /** This function parses a file for macros */
295 void Execute( httpd_file_sys_t *p_args,
296 char *p_request, int i_request,
297 char **pp_data, int *pi_data,
299 char *_src, char *_end );
307 * This structure represent a single HTML file to be parsed by the macros
309 struct httpd_file_sys_t
311 intf_thread_t *p_intf;
312 httpd_file_t *p_file;
313 httpd_redirect_t *p_redir;
314 httpd_redirect_t *p_redir2;
319 bool b_html, b_handler;
321 /* inited for each access */
327 * Structure associating an extension to an external program
329 typedef struct http_association_t
334 } http_association_t;
337 * This structure represent a single CGI file to be parsed by the macros
339 struct httpd_handler_sys_t
341 httpd_file_sys_t file;
343 /* HACK ALERT: this is added below so that casting httpd_handler_sys_t
344 * to httpd_file_sys_t works */
345 httpd_handler_t *p_handler;
346 http_association_t *p_association;
350 * Internal service structure for the HTTP interface
354 httpd_host_t *p_httpd_host;
357 httpd_file_sys_t **pp_files;
360 http_association_t **pp_handlers;
361 httpd_handler_t *p_art_handler;
363 playlist_t *p_playlist;
364 input_thread_t *p_input;
368 unsigned short i_port;
371 /** This function is the main HTTPD Callback used by the HTTP Interface */
372 int HttpCallback( httpd_file_sys_t *p_args,
375 uint8_t **pp_data, int *pi_data );
376 /** This function is the HTTPD Callback used for CGIs */
377 int HandlerCallback( httpd_handler_sys_t *p_args,
378 httpd_handler_t *p_handler, char *_p_url,
379 uint8_t *_p_request, int i_type,
380 uint8_t *_p_in, int i_in,
381 char *psz_remote_addr, char *psz_remote_host,
382 uint8_t **_pp_data, int *pi_data );