1 /*****************************************************************************
2 * http.c: HTTP interface
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
6 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_access.h>
39 #include <sys/types.h>
41 /* Include dvbpsi headers */
42 #ifdef HAVE_DVBPSI_DR_H
43 # include <dvbpsi/dvbpsi.h>
44 # include <dvbpsi/descriptor.h>
45 # include <dvbpsi/pat.h>
46 # include <dvbpsi/pmt.h>
47 # include <dvbpsi/dr.h>
48 # include <dvbpsi/psi.h>
49 # include <dvbpsi/demux.h>
50 # include <dvbpsi/sdt.h>
53 # include "descriptor.h"
54 # include "tables/pat.h"
55 # include "tables/pmt.h"
56 # include "descriptors/dr.h"
59 # include "tables/sdt.h"
63 # include <vlc_httpd.h>
70 struct httpd_file_sys_t
76 static int HttpCallback( httpd_file_sys_t *p_args,
79 uint8_t **_pp_data, int *pi_data );
81 /*****************************************************************************
82 * HTTPOpen: Start the internal HTTP server
83 *****************************************************************************/
84 int HTTPOpen( access_t *p_access )
86 access_sys_t *p_sys = p_access->p_sys;
87 char *psz_address, *psz_cert = NULL, *psz_key = NULL,
88 *psz_ca = NULL, *psz_crl = NULL, *psz_user = NULL,
89 *psz_password = NULL, *psz_acl = NULL;
92 vlc_acl_t *p_acl = NULL;
95 vlc_mutex_init( &p_sys->httpd_mutex );
96 vlc_cond_init( &p_sys->httpd_cond );
97 p_sys->b_request_frontend_info = p_sys->b_request_mmi_info = false;
98 p_sys->i_httpd_timeout = 0;
100 psz_address = var_GetNonEmptyString( p_access, "dvb-http-host" );
101 if( psz_address != NULL )
103 char *psz_parser = strchr( psz_address, ':' );
106 *psz_parser++ = '\0';
107 i_port = atoi( psz_parser );
113 /* determine SSL configuration */
114 psz_cert = var_InheritString( p_access, "dvb-http-intf-cert" );
115 if ( psz_cert != NULL )
117 msg_Dbg( p_access, "enabling TLS for HTTP interface (cert file: %s)",
119 psz_key = var_InheritString( p_access, "dvb-http-intf-key" );
120 psz_ca = var_InheritString( p_access, "dvb-http-intf-ca" );
121 psz_crl = var_InheritString( p_access, "dvb-http-intf-crl" );
132 /* Ugly hack to allow to run several HTTP servers on different ports. */
133 sprintf( psz_tmp, ":%d", i_port + 1 );
134 config_PutPsz( p_access, "dvb-http-host", psz_tmp );
136 msg_Dbg( p_access, "base %s:%d", psz_address, i_port );
138 p_sys->p_httpd_host = httpd_TLSHostNew( VLC_OBJECT(p_access), psz_address,
139 i_port, psz_cert, psz_key, psz_ca,
146 if ( p_sys->p_httpd_host == NULL )
148 msg_Err( p_access, "cannot listen on %s:%d", psz_address, i_port );
154 psz_user = var_GetNonEmptyString( p_access, "dvb-http-user" );
155 psz_password = var_GetNonEmptyString( p_access, "dvb-http-password" );
156 psz_acl = var_GetNonEmptyString( p_access, "dvb-http-acl" );
158 if ( psz_acl != NULL )
160 p_acl = ACL_Create( p_access, false );
161 if( ACL_LoadFile( p_acl, psz_acl ) )
163 ACL_Destroy( p_acl );
168 /* Declare an index.html file. */
169 f = malloc( sizeof(httpd_file_sys_t) );
170 f->p_access = p_access;
171 f->p_file = httpd_FileNew( p_sys->p_httpd_host, "/index.html",
172 "text/html; charset=UTF-8",
173 psz_user, psz_password, p_acl,
177 free( psz_password );
180 ACL_Destroy( p_acl );
182 if ( f->p_file == NULL )
185 p_sys->p_httpd_file = NULL;
189 p_sys->p_httpd_file = f;
190 p_sys->p_httpd_redir = httpd_RedirectNew( p_sys->p_httpd_host,
191 "/index.html", "/" );
196 /*****************************************************************************
197 * HTTPClose: Stop the internal HTTP server
198 *****************************************************************************/
199 void HTTPClose( access_t *p_access )
201 access_sys_t *p_sys = p_access->p_sys;
203 if ( p_sys->p_httpd_host != NULL )
205 if ( p_sys->p_httpd_file != NULL )
207 /* Unlock the thread if it is stuck in HttpCallback */
208 vlc_mutex_lock( &p_sys->httpd_mutex );
209 if ( p_sys->b_request_frontend_info == true )
211 p_sys->b_request_frontend_info = false;
212 p_sys->psz_frontend_info = strdup("");
214 if ( p_sys->b_request_mmi_info == true )
216 p_sys->b_request_mmi_info = false;
217 p_sys->psz_mmi_info = strdup("");
219 vlc_cond_signal( &p_sys->httpd_cond );
220 vlc_mutex_unlock( &p_sys->httpd_mutex );
222 httpd_FileDelete( p_sys->p_httpd_file->p_file );
223 httpd_RedirectDelete( p_sys->p_httpd_redir );
226 httpd_HostDelete( p_sys->p_httpd_host );
229 vlc_mutex_destroy( &p_sys->httpd_mutex );
230 vlc_cond_destroy( &p_sys->httpd_cond );
234 static const char *psz_constant_header =
236 "<head><title>VLC DVB monitoring interface</title></head>\n"
237 "<body><a href=\"index.html\">Reload this page</a>\n"
238 "<h1>CAM info</h1>\n";
240 static const char *psz_constant_middle =
241 "<hr><h1>Frontend Info</h1>\n";
243 static const char *psz_constant_footer =
246 /****************************************************************************
247 * HttpCallback: Return the index.html file
248 ****************************************************************************/
249 static int HttpCallback( httpd_file_sys_t *p_args,
250 httpd_file_t *p_file,
251 uint8_t *_psz_request,
252 uint8_t **_pp_data, int *pi_data )
255 access_sys_t *p_sys = p_args->p_access->p_sys;
256 char *psz_request = (char *)_psz_request;
257 char **pp_data = (char **)_pp_data;
259 vlc_mutex_lock( &p_sys->httpd_mutex );
261 p_sys->i_httpd_timeout = mdate() + INT64_C(3000000); /* 3 s */
262 p_sys->psz_request = psz_request;
263 p_sys->b_request_frontend_info = true;
264 if ( p_sys->i_ca_handle )
266 p_sys->b_request_mmi_info = true;
270 p_sys->psz_mmi_info = strdup( "No available CAM interface\n" );
275 vlc_cond_wait( &p_sys->httpd_cond, &p_sys->httpd_mutex );
277 while ( p_sys->b_request_frontend_info || p_sys->b_request_mmi_info );
279 p_sys->i_httpd_timeout = 0;
280 vlc_mutex_unlock( &p_sys->httpd_mutex );
282 *pi_data = strlen( psz_constant_header )
283 + strlen( p_sys->psz_mmi_info )
284 + strlen( psz_constant_middle )
285 + strlen( p_sys->psz_frontend_info )
286 + strlen( psz_constant_footer ) + 1;
287 *pp_data = malloc( *pi_data );
289 sprintf( *pp_data, "%s%s%s%s%s", psz_constant_header,
290 p_sys->psz_mmi_info, psz_constant_middle,
291 p_sys->psz_frontend_info, psz_constant_footer );
292 free( p_sys->psz_frontend_info );
293 free( p_sys->psz_mmi_info );
298 /****************************************************************************
299 * HTTPExtractValue: Extract a GET variable from psz_request
300 ****************************************************************************/
301 const char *HTTPExtractValue( const char *psz_uri, const char *psz_name,
302 char *psz_value, int i_value_max )
304 const char *p = psz_uri;
306 while( (p = strstr( p, psz_name )) )
308 /* Verify that we are dealing with a post/get argument */
309 if( (p == psz_uri || *(p - 1) == '&' || *(p - 1) == '\n')
310 && p[strlen(psz_name)] == '=' )
319 p += strlen( psz_name );
322 if( strchr( p, '&' ) )
324 i_len = strchr( p, '&' ) - p;
328 /* for POST method */
329 if( strchr( p, '\n' ) )
331 i_len = strchr( p, '\n' ) - p;
332 if( i_len && *(p+i_len-1) == '\r' ) i_len--;
339 i_len = __MIN( i_value_max - 1, i_len );
342 strncpy( psz_value, p, i_len );
343 psz_value[i_len] = '\0';
347 strncpy( psz_value, "", i_value_max );
353 strncpy( psz_value, "", i_value_max );
359 #endif /* ENABLE_HTTPD */