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>
43 /* Include dvbpsi headers */
44 #ifdef HAVE_DVBPSI_DR_H
45 # include <dvbpsi/dvbpsi.h>
46 # include <dvbpsi/descriptor.h>
47 # include <dvbpsi/pat.h>
48 # include <dvbpsi/pmt.h>
49 # include <dvbpsi/dr.h>
50 # include <dvbpsi/psi.h>
51 # include <dvbpsi/demux.h>
52 # include <dvbpsi/sdt.h>
55 # include "descriptor.h"
56 # include "tables/pat.h"
57 # include "tables/pmt.h"
58 # include "descriptors/dr.h"
61 # include "tables/sdt.h"
65 # include "vlc_httpd.h"
72 struct httpd_file_sys_t
78 static int HttpCallback( httpd_file_sys_t *p_args,
81 uint8_t **_pp_data, int *pi_data );
83 /*****************************************************************************
84 * HTTPOpen: Start the internal HTTP server
85 *****************************************************************************/
86 int HTTPOpen( access_t *p_access )
88 access_sys_t *p_sys = p_access->p_sys;
89 char *psz_address, *psz_cert = NULL, *psz_key = NULL,
90 *psz_ca = NULL, *psz_crl = NULL, *psz_user = NULL,
91 *psz_password = NULL, *psz_acl = NULL;
94 vlc_acl_t *p_acl = NULL;
97 vlc_mutex_init( &p_sys->httpd_mutex );
98 vlc_cond_init( &p_sys->httpd_cond );
99 p_sys->b_request_frontend_info = p_sys->b_request_mmi_info = false;
100 p_sys->i_httpd_timeout = 0;
102 psz_address = var_GetNonEmptyString( p_access, "dvb-http-host" );
103 if( psz_address != NULL )
105 char *psz_parser = strchr( psz_address, ':' );
108 *psz_parser++ = '\0';
109 i_port = atoi( psz_parser );
115 /* determine SSL configuration */
116 psz_cert = var_GetNonEmptyString( p_access, "dvb-http-intf-cert" );
117 if ( psz_cert != NULL )
119 msg_Dbg( p_access, "enabling TLS for HTTP interface (cert file: %s)",
121 psz_key = config_GetPsz( p_access, "dvb-http-intf-key" );
122 psz_ca = config_GetPsz( p_access, "dvb-http-intf-ca" );
123 psz_crl = config_GetPsz( p_access, "dvb-http-intf-crl" );
134 /* Ugly hack to allow to run several HTTP servers on different ports. */
135 sprintf( psz_tmp, ":%d", i_port + 1 );
136 config_PutPsz( p_access, "dvb-http-host", psz_tmp );
138 msg_Dbg( p_access, "base %s:%d", psz_address, i_port );
140 p_sys->p_httpd_host = httpd_TLSHostNew( VLC_OBJECT(p_access), psz_address,
141 i_port, psz_cert, psz_key, psz_ca,
148 if ( p_sys->p_httpd_host == NULL )
150 msg_Err( p_access, "cannot listen on %s:%d", psz_address, i_port );
156 psz_user = var_GetNonEmptyString( p_access, "dvb-http-user" );
157 psz_password = var_GetNonEmptyString( p_access, "dvb-http-password" );
158 psz_acl = var_GetNonEmptyString( p_access, "dvb-http-acl" );
160 if ( psz_acl != NULL )
162 p_acl = ACL_Create( p_access, false );
163 if( ACL_LoadFile( p_acl, psz_acl ) )
165 ACL_Destroy( p_acl );
170 /* Declare an index.html file. */
171 f = malloc( sizeof(httpd_file_sys_t) );
172 f->p_access = p_access;
173 f->p_file = httpd_FileNew( p_sys->p_httpd_host, "/index.html",
174 "text/html; charset=UTF-8",
175 psz_user, psz_password, p_acl,
179 free( psz_password );
182 ACL_Destroy( p_acl );
184 if ( f->p_file == NULL )
187 p_sys->p_httpd_file = NULL;
191 p_sys->p_httpd_file = f;
192 p_sys->p_httpd_redir = httpd_RedirectNew( p_sys->p_httpd_host,
193 "/index.html", "/" );
198 /*****************************************************************************
199 * HTTPClose: Stop the internal HTTP server
200 *****************************************************************************/
201 void HTTPClose( access_t *p_access )
203 access_sys_t *p_sys = p_access->p_sys;
205 if ( p_sys->p_httpd_host != NULL )
207 if ( p_sys->p_httpd_file != NULL )
209 /* Unlock the thread if it is stuck in HttpCallback */
210 vlc_mutex_lock( &p_sys->httpd_mutex );
211 if ( p_sys->b_request_frontend_info == true )
213 p_sys->b_request_frontend_info = false;
214 p_sys->psz_frontend_info = strdup("");
216 if ( p_sys->b_request_mmi_info == true )
218 p_sys->b_request_mmi_info = false;
219 p_sys->psz_mmi_info = strdup("");
221 vlc_cond_signal( &p_sys->httpd_cond );
222 vlc_mutex_unlock( &p_sys->httpd_mutex );
224 httpd_FileDelete( p_sys->p_httpd_file->p_file );
225 httpd_RedirectDelete( p_sys->p_httpd_redir );
228 httpd_HostDelete( p_sys->p_httpd_host );
231 vlc_mutex_destroy( &p_sys->httpd_mutex );
232 vlc_cond_destroy( &p_sys->httpd_cond );
236 static const char *psz_constant_header =
238 "<head><title>VLC DVB monitoring interface</title></head>\n"
239 "<body><a href=\"index.html\">Reload this page</a>\n"
240 "<h1>CAM info</h1>\n";
242 static const char *psz_constant_middle =
243 "<hr><h1>Frontend Info</h1>\n";
245 static const char *psz_constant_footer =
248 /****************************************************************************
249 * HttpCallback: Return the index.html file
250 ****************************************************************************/
251 static int HttpCallback( httpd_file_sys_t *p_args,
252 httpd_file_t *p_file,
253 uint8_t *_psz_request,
254 uint8_t **_pp_data, int *pi_data )
256 access_sys_t *p_sys = p_args->p_access->p_sys;
257 char *psz_request = (char *)_psz_request;
258 char **pp_data = (char **)_pp_data;
260 vlc_mutex_lock( &p_sys->httpd_mutex );
262 p_sys->i_httpd_timeout = mdate() + INT64_C(3000000); /* 3 s */
263 p_sys->psz_request = psz_request;
264 p_sys->b_request_frontend_info = true;
265 if ( p_sys->i_ca_handle )
267 p_sys->b_request_mmi_info = true;
271 p_sys->psz_mmi_info = strdup( "No available CAM interface\n" );
276 vlc_cond_wait( &p_sys->httpd_cond, &p_sys->httpd_mutex );
278 while ( p_sys->b_request_frontend_info || p_sys->b_request_mmi_info );
280 p_sys->i_httpd_timeout = 0;
281 vlc_mutex_unlock( &p_sys->httpd_mutex );
283 *pi_data = strlen( psz_constant_header )
284 + strlen( p_sys->psz_mmi_info )
285 + strlen( psz_constant_middle )
286 + strlen( p_sys->psz_frontend_info )
287 + strlen( psz_constant_footer ) + 1;
288 *pp_data = malloc( *pi_data );
290 sprintf( *pp_data, "%s%s%s%s%s", psz_constant_header,
291 p_sys->psz_mmi_info, psz_constant_middle,
292 p_sys->psz_frontend_info, psz_constant_footer );
293 free( p_sys->psz_frontend_info );
294 free( p_sys->psz_mmi_info );
299 /****************************************************************************
300 * HTTPExtractValue: Extract a GET variable from psz_request
301 ****************************************************************************/
302 char *HTTPExtractValue( char *psz_uri, const char *psz_name,
303 char *psz_value, int i_value_max )
307 while( (p = strstr( p, psz_name )) )
309 /* Verify that we are dealing with a post/get argument */
310 if( (p == psz_uri || *(p - 1) == '&' || *(p - 1) == '\n')
311 && p[strlen(psz_name)] == '=' )
320 p += strlen( psz_name );
323 if( strchr( p, '&' ) )
325 i_len = strchr( p, '&' ) - p;
329 /* for POST method */
330 if( strchr( p, '\n' ) )
332 i_len = strchr( p, '\n' ) - p;
333 if( i_len && *(p+i_len-1) == '\r' ) i_len--;
340 i_len = __MIN( i_value_max - 1, i_len );
343 strncpy( psz_value, p, i_len );
344 psz_value[i_len] = '\0';
348 strncpy( psz_value, "", i_value_max );
354 strncpy( psz_value, "", i_value_max );
360 #endif /* ENABLE_HTTPD */