1 /*****************************************************************************
2 * http.h: Headers for the HTTP interface
3 *****************************************************************************
4 * Copyright (C) 2001-2005 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 *****************************************************************************/
39 #include <vlc/vout.h> /* for fullscreen */
41 #include "vlc_httpd.h"
47 #ifdef HAVE_SYS_STAT_H
48 # include <sys/stat.h>
59 #elif defined( WIN32 ) && !defined( UNDER_CE )
67 /* stat() support for large files on win32 */
68 #if defined( WIN32 ) && !defined( UNDER_CE )
69 # define stat _stati64
72 /** \defgroup http_intf HTTP Interface
73 * This is the HTTP remote control interface. It is fully customizable
74 * by writing HTML pages using custom <vlc> tags.
76 * These tags use so-called macros.
78 * These macros can manipulate variables. For more complex operations,
79 * a custom RPN evaluator with many built-in functions is provided.
83 /*****************************************************************************
85 *****************************************************************************/
86 #define MAX_DIR_SIZE 2560
87 #define STACK_MAX 100 //< Maximum RPN stack size
90 /*****************************************************************************
92 *****************************************************************************/
94 /** \defgroup http_utils Utilities
100 /* File and directory functions */
102 /** This function recursively parses a directory and adds all files */
103 int E_(ParseDirectory)( intf_thread_t *p_intf, char *psz_root,
105 /** This function loads a file into a buffer */
106 int E_(FileLoad)( FILE *f, char **pp_data, int *pi_data );
107 /** This function creates a suitable URL for a filename */
108 char *E_(FileToUrl)( char *name, vlc_bool_t *pb_index );
109 /** This function returns the real path of a file or directory */
110 char *E_(RealPath)( intf_thread_t *p_intf, const char *psz_src );
112 /* Locale handling functions */
114 /** This fuction converts a locale string to UTF-8 */
115 char *E_(FromUTF8)( intf_thread_t *p_intf, char *psz_utf8 );
116 /** This function converts an UTF-8 to locale */
117 char *E_(ToUTF8)( intf_thread_t *p_intf, char *psz_local );
119 /** This command parses the "seek" command for the HTTP interface
120 * and performs the requested action */
121 void E_(HandleSeek)( intf_thread_t *p_intf, char *p_value );
123 /* URI Handling functions */
125 /** This function extracts the value for a given argument name
126 * from an HTTP request */
127 char *E_(ExtractURIValue)( char *psz_uri, const char *psz_name,
128 char *psz_value, int i_value_max );
129 /** \todo Describe this function */
130 int E_(TestURIParam)( char *psz_uri, const char *psz_name );
131 /** This function extracts the original value from an URL-encoded string */
132 void E_(DecodeEncodedURI)( char *psz );
134 /** This function parses a MRL */
135 playlist_item_t *E_(MRLParse)( intf_thread_t *, char *psz, char *psz_name );
137 /** Return the first word from a string (works in-place) */
138 char *E_(FirstWord)( char *psz, char *new );
142 /****************************************************************************
143 * Variable handling functions
144 ****************************************************************************/
146 /** \defgroup http_vars Macro variables
148 * These variables can be used in the <vlc> macros and in the RPN evaluator.
149 * The variables make a tree: each variable can have an arbitrary
150 * number of "children" variables.
151 * A number of helper functions are provided to manipulate the main variable
158 * This structure defines a macro variable
160 typedef struct mvar_s
162 char *name; ///< Variable name
163 char *value; ///< Variable value
165 int i_field; ///< Number of children variables
166 struct mvar_s **field; ///< Children variables array
170 /** This function creates a new variable */
171 mvar_t *E_(mvar_New)( const char *name, const char *value );
172 /** This function deletes a variable */
173 void E_(mvar_Delete)( mvar_t *v );
174 /** This function adds f to the children variables of v, at last position */
175 void E_(mvar_AppendVar)( mvar_t *v, mvar_t *f );
176 /** This function duplicates a variable */
177 mvar_t *E_(mvar_Duplicate)( const mvar_t *v );
178 /** This function adds f to the children variables of v, at fist position */
179 void E_(mvar_PushVar)( mvar_t *v, mvar_t *f );
180 /** This function removes f from the children variables of v */
181 void E_(mvar_RemoveVar)( mvar_t *v, mvar_t *f );
182 /** This function retrieves the child variable named "name" */
183 mvar_t *E_(mvar_GetVar)( mvar_t *s, const char *name );
184 /** This function retrieves the value of the child variable named "field" */
185 char *E_(mvar_GetValue)( mvar_t *v, char *field );
186 /** This function creates a variable with the given name and value and
187 * adds it as first child of vars */
188 void E_(mvar_PushNewVar)( mvar_t *vars, const char *name,
190 /** This function creates a variable with the given name and value and
191 * adds it as last child of vars */
192 void E_(mvar_AppendNewVar)( mvar_t *vars, const char *name,
196 /** \defgroup http_sets Sets *
198 * Sets are an application of the macro variables. There are a number of
199 * predefined functions that will give you variables whose children represent
200 * VLC internal data (playlist, stream info, ...)
204 /** This function creates a set variable which represents a series of integer
205 * The arg parameter must be of the form "start[:stop[:step]]" */
206 mvar_t *E_(mvar_IntegerSetNew)( const char *name, const char *arg );
208 /** This function creates a set variable with a list of VLC objects */
209 mvar_t *E_(mvar_ObjectSetNew)( intf_thread_t *p_intf, char *name, char *arg );
211 /** This function creates a set variable with the contents of the playlist */
212 mvar_t *E_(mvar_PlaylistSetNew)( intf_thread_t *p_intf, char *name,
214 /** This function creates a set variable with the contents of the Stream
215 * and media info box */
216 mvar_t *E_(mvar_InfoSetNew)( intf_thread_t *p_intf, char *name,
217 input_thread_t *p_input );
218 /** This function creates a set variable with the input parameters */
219 mvar_t *E_(mvar_InputVarSetNew)( intf_thread_t *p_intf, char *name,
220 input_thread_t *p_input,
221 const char *psz_variable );
222 /** This function creates a set variable representing the files of the psz_dir
224 mvar_t *E_(mvar_FileSetNew)( intf_thread_t *p_intf, char *name,
226 /** This function creates a set variable representing the VLM streams */
227 mvar_t *E_(mvar_VlmSetNew)( char *name, vlm_t *vlm );
229 /** This function converts the listing of a playlist node into a mvar set */
230 void E_(PlaylistListNode)( intf_thread_t *p_intf, playlist_t *p_pl,
231 playlist_item_t *p_node, char *name, mvar_t *s,
236 /*****************************************************************************
238 *****************************************************************************/
240 /** \defgroup http_rpn RPN Evaluator
246 * \struct rpn_stack_t
247 * This structure represents a stack of RPN commands for the HTTP interface
248 * It is attached to a request
252 char *stack[STACK_MAX];
256 /** This function creates the RPN evaluator stack */
257 void E_(SSInit)( rpn_stack_t * );
258 /** This function cleans the evaluator stack */
259 void E_(SSClean)( rpn_stack_t * );
260 /* Evaluate and execute the RPN Stack */
261 void E_(EvaluateRPN)( intf_thread_t *p_intf, mvar_t *vars,
262 rpn_stack_t *st, char *exp );
264 /* Push an operand on top of the RPN stack */
265 void E_(SSPush) ( rpn_stack_t *, const char * );
266 /* Remove the first operand from the RPN Stack */
267 char *E_(SSPop) ( rpn_stack_t * );
268 /* Pushes an operand at a given position in the stack */
269 void E_(SSPushN) ( rpn_stack_t *, int );
270 /* Removes an operand at the given position in the stack */
271 int E_(SSPopN) ( rpn_stack_t *, mvar_t * );
276 /****************************************************************************
277 * Macro handling (<vlc ... stuff)
278 ****************************************************************************/
280 /** \defgroup http_macros <vlc> Macros Handling
282 * A macro is a code snippet in the HTML page looking like
283 * <vlc id="macro_id" param1="value1" param2="value2">
284 * Macros string ids are mapped to macro types, and specific handling code
285 * must be written for each macro type
291 * This structure represents a HTTP Interface macro.
295 char *id; ///< Macro ID string
296 char *param1; ///< First parameter
297 char *param2; ///< Second parameter
300 /** This function creates a macro from a <vlc ....> tag */
301 int E_(MacroParse)( macro_t *m, char *psz_src );
302 /** This function cleans a macro */
303 void E_(MacroClean)( macro_t *m );
305 /** This function returns the macro type identifier from its id= string value
306 * It uses the StrToMacroTypeTab mapping array for this */
307 int E_(StrToMacroType)( char *name );
308 /** This function actually executes the macro */
309 void E_(MacroDo)( httpd_file_sys_t *p_args, macro_t *m,
310 char *p_request, int i_request, char **pp_data,
311 int *pi_data, char **pp_dst );
312 /** This function looks for macros in a string */
313 char *E_(MacroSearch)( char *src, char *end,
314 int i_mvlc, vlc_bool_t b_after );
316 /** This function parses a file for macros */
317 void E_(Execute)( httpd_file_sys_t *p_args,
318 char *p_request, int i_request,
319 char **pp_data, int *pi_data,
321 char *_src, char *_end );
329 * This structure represent a single HTML file to be parsed by the macros
331 struct httpd_file_sys_t
333 intf_thread_t *p_intf;
334 httpd_file_t *p_file;
335 httpd_redirect_t *p_redir;
336 httpd_redirect_t *p_redir2;
341 vlc_bool_t b_html, b_handler;
343 /* inited for each access */
349 * Structure associating an extension to an external program
351 typedef struct http_association_t
356 } http_association_t;
359 * This structure represent a single CGI file to be parsed by the macros
361 struct httpd_handler_sys_t
363 httpd_file_sys_t file;
365 /* HACK ALERT: this is added below so that casting httpd_handler_sys_t
366 * to httpd_file_sys_t works */
367 httpd_handler_t *p_handler;
368 http_association_t *p_association;
372 * Internal service structure for the HTTP interface
376 httpd_host_t *p_httpd_host;
379 httpd_file_sys_t **pp_files;
382 http_association_t **pp_handlers;
384 playlist_t *p_playlist;
385 input_thread_t *p_input;
389 vlc_iconv_t iconv_from_utf8, iconv_to_utf8;
392 unsigned short i_port;
395 /** This function is the main HTTPD Callback used by the HTTP Interface */
396 int E_(HttpCallback)( httpd_file_sys_t *p_args,
399 uint8_t **pp_data, int *pi_data );
400 /** This function is the HTTPD Callback used for CGIs */
401 int E_(HandlerCallback)( httpd_handler_sys_t *p_args,
402 httpd_handler_t *p_handler, char *_p_url,
403 uint8_t *_p_request, int i_type,
404 uint8_t *_p_in, int i_in,
405 char *psz_remote_addr, char *psz_remote_host,
406 uint8_t **_pp_data, int *pi_data );