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 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_access.h>
34 #include <vlc_httpd.h>
37 #include <sys/types.h>
39 /* Include dvbpsi headers */
40 # include <dvbpsi/dvbpsi.h>
41 # include <dvbpsi/descriptor.h>
42 # include <dvbpsi/pat.h>
43 # include <dvbpsi/pmt.h>
44 # include <dvbpsi/dr.h>
45 # include <dvbpsi/psi.h>
46 # include <dvbpsi/demux.h>
47 # include <dvbpsi/sdt.h>
51 struct httpd_file_sys_t
57 static int HttpCallback( httpd_file_sys_t *p_args,
60 uint8_t **_pp_data, int *pi_data );
62 /*****************************************************************************
63 * HTTPOpen: Start the internal HTTP server
64 *****************************************************************************/
65 int HTTPOpen( access_t *p_access )
67 access_sys_t *p_sys = p_access->p_sys;
68 char *psz_address, *psz_cert = NULL, *psz_key = NULL,
69 *psz_ca = NULL, *psz_crl = NULL, *psz_user = NULL,
70 *psz_password = NULL, *psz_acl = NULL;
73 vlc_acl_t *p_acl = NULL;
76 vlc_mutex_init( &p_sys->httpd_mutex );
77 vlc_cond_init( &p_sys->httpd_cond );
78 p_sys->b_request_frontend_info = p_sys->b_request_mmi_info = false;
79 p_sys->i_httpd_timeout = 0;
81 psz_address = var_GetNonEmptyString( p_access, "dvb-http-host" );
82 if( psz_address != NULL )
84 char *psz_parser = strchr( psz_address, ':' );
88 i_port = atoi( psz_parser );
94 /* determine SSL configuration */
95 psz_cert = var_InheritString( p_access, "dvb-http-intf-cert" );
96 if ( psz_cert != NULL )
98 msg_Dbg( p_access, "enabling TLS for HTTP interface (cert file: %s)",
100 psz_key = var_InheritString( p_access, "dvb-http-intf-key" );
101 psz_ca = var_InheritString( p_access, "dvb-http-intf-ca" );
102 psz_crl = var_InheritString( p_access, "dvb-http-intf-crl" );
113 /* Ugly hack to allow to run several HTTP servers on different ports. */
114 sprintf( psz_tmp, ":%d", i_port + 1 );
115 config_PutPsz( p_access, "dvb-http-host", psz_tmp );
117 msg_Dbg( p_access, "base %s:%d", psz_address, i_port );
119 p_sys->p_httpd_host = httpd_TLSHostNew( VLC_OBJECT(p_access), psz_address,
120 i_port, psz_cert, psz_key, psz_ca,
127 if ( p_sys->p_httpd_host == NULL )
129 msg_Err( p_access, "cannot listen on %s:%d", psz_address, i_port );
135 psz_user = var_GetNonEmptyString( p_access, "dvb-http-user" );
136 psz_password = var_GetNonEmptyString( p_access, "dvb-http-password" );
137 psz_acl = var_GetNonEmptyString( p_access, "dvb-http-acl" );
139 if ( psz_acl != NULL )
141 p_acl = ACL_Create( p_access, false );
142 if( ACL_LoadFile( p_acl, psz_acl ) )
144 ACL_Destroy( p_acl );
149 /* Declare an index.html file. */
150 f = malloc( sizeof(httpd_file_sys_t) );
151 f->p_access = p_access;
152 f->p_file = httpd_FileNew( p_sys->p_httpd_host, "/index.html",
153 "text/html; charset=UTF-8",
154 psz_user, psz_password, p_acl,
158 free( psz_password );
161 ACL_Destroy( p_acl );
163 if ( f->p_file == NULL )
166 p_sys->p_httpd_file = NULL;
170 p_sys->p_httpd_file = f;
171 p_sys->p_httpd_redir = httpd_RedirectNew( p_sys->p_httpd_host,
172 "/index.html", "/" );
177 /*****************************************************************************
178 * HTTPClose: Stop the internal HTTP server
179 *****************************************************************************/
180 void HTTPClose( access_t *p_access )
182 access_sys_t *p_sys = p_access->p_sys;
184 if ( p_sys->p_httpd_host != NULL )
186 if ( p_sys->p_httpd_file != NULL )
188 /* Unlock the thread if it is stuck in HttpCallback */
189 vlc_mutex_lock( &p_sys->httpd_mutex );
190 if ( p_sys->b_request_frontend_info )
192 p_sys->b_request_frontend_info = false;
193 p_sys->psz_frontend_info = strdup("");
195 if ( p_sys->b_request_mmi_info )
197 p_sys->b_request_mmi_info = false;
198 p_sys->psz_mmi_info = strdup("");
200 vlc_cond_signal( &p_sys->httpd_cond );
201 vlc_mutex_unlock( &p_sys->httpd_mutex );
203 httpd_FileDelete( p_sys->p_httpd_file->p_file );
204 httpd_RedirectDelete( p_sys->p_httpd_redir );
207 httpd_HostDelete( p_sys->p_httpd_host );
210 vlc_mutex_destroy( &p_sys->httpd_mutex );
211 vlc_cond_destroy( &p_sys->httpd_cond );
215 static const char *psz_constant_header =
217 "<head><title>VLC DVB monitoring interface</title></head>\n"
218 "<body><a href=\"index.html\">Reload this page</a>\n"
219 "<h1>CAM info</h1>\n";
221 static const char *psz_constant_middle =
222 "<hr><h1>Frontend Info</h1>\n";
224 static const char *psz_constant_footer =
227 /****************************************************************************
228 * HttpCallback: Return the index.html file
229 ****************************************************************************/
230 static int HttpCallback( httpd_file_sys_t *p_args,
231 httpd_file_t *p_file,
232 uint8_t *_psz_request,
233 uint8_t **_pp_data, int *pi_data )
236 access_sys_t *p_sys = p_args->p_access->p_sys;
237 char *psz_request = (char *)_psz_request;
238 char **pp_data = (char **)_pp_data;
240 vlc_mutex_lock( &p_sys->httpd_mutex );
242 p_sys->i_httpd_timeout = mdate() + INT64_C(3000000); /* 3 s */
243 p_sys->psz_request = psz_request;
244 p_sys->b_request_frontend_info = true;
245 if ( p_sys->p_cam != NULL )
247 p_sys->b_request_mmi_info = true;
251 p_sys->psz_mmi_info = strdup( "No available CAM interface\n" );
256 vlc_cond_wait( &p_sys->httpd_cond, &p_sys->httpd_mutex );
258 while ( p_sys->b_request_frontend_info || p_sys->b_request_mmi_info );
260 p_sys->i_httpd_timeout = 0;
261 vlc_mutex_unlock( &p_sys->httpd_mutex );
263 *pi_data = strlen( psz_constant_header )
264 + strlen( p_sys->psz_mmi_info )
265 + strlen( psz_constant_middle )
266 + strlen( p_sys->psz_frontend_info )
267 + strlen( psz_constant_footer ) + 1;
268 *pp_data = malloc( *pi_data );
270 sprintf( *pp_data, "%s%s%s%s%s", psz_constant_header,
271 p_sys->psz_mmi_info, psz_constant_middle,
272 p_sys->psz_frontend_info, psz_constant_footer );
273 free( p_sys->psz_frontend_info );
274 free( p_sys->psz_mmi_info );
279 /****************************************************************************
280 * HTTPExtractValue: Extract a GET variable from psz_request
281 ****************************************************************************/
282 const char *HTTPExtractValue( const char *psz_uri, const char *psz_name,
283 char *psz_value, int i_value_max )
285 const char *p = psz_uri;
287 while( (p = strstr( p, psz_name )) )
289 /* Verify that we are dealing with a post/get argument */
290 if( (p == psz_uri || *(p - 1) == '&' || *(p - 1) == '\n')
291 && p[strlen(psz_name)] == '=' )
300 p += strlen( psz_name );
303 if( strchr( p, '&' ) )
305 i_len = strchr( p, '&' ) - p;
309 /* for POST method */
310 if( strchr( p, '\n' ) )
312 i_len = strchr( p, '\n' ) - p;
313 if( i_len && *(p+i_len-1) == '\r' ) i_len--;
320 i_len = __MIN( i_value_max - 1, i_len );
323 strncpy( psz_value, p, i_len );
324 psz_value[i_len] = '\0';
328 strncpy( psz_value, "", i_value_max );
334 strncpy( psz_value, "", i_value_max );
340 #endif /* ENABLE_HTTPD */