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branches/gmyth-0.1b/src/gmyth_uri.c
author rosfran
Fri Feb 02 22:04:00 2007 +0000 (2007-02-02)
branchtrunk
changeset 322 eb6b0b1409b5
permissions -rwxr-xr-x
[svn r324] Added function to request how many recorders are available. 
     1 /** 

     2  * GMyth Library

     3  *

     4  * @file gmyth/gmyth_uri.c

     5  * 

     6  * @brief <p> GMythURI utils

     7  *  - Extracts and parses a URI char string, in according with the RFC 2396 

     8  *    [http://www.ietf.org/rfc/rfc2396.txt]

     9  * 

    10  * Copyright (C) 2006 INdT - Instituto Nokia de Tecnologia.

    11  * @author Rosfran Borges <rosfran.borges@indt.org.br>

    12  *

    13  *//*

    14  * 

    15  * This program is free software; you can redistribute it and/or modify

    16  * it under the terms of the GNU Lesser General Public License as published by

    17  * the Free Software Foundation; either version 2 of the License, or

    18  * (at your option) any later version.

    19  *

    20  * This program is distributed in the hope that it will be useful,

    21  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    23  * GNU General Public License for more details.

    24  *

    25  * You should have received a copy of the GNU Lesser General Public License

    26  * along with this program; if not, write to the Free Software

    27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    28  */

    29  

    30 #ifdef HAVE_CONFIG_H

    31 #include "config.h"

    32 #endif

    33 

    34 #include "gmyth_uri.h"

    35 

    36 #include <glib.h>

    37 #include <string.h>

    38 #include <stdlib.h>

    39 

    40 #include "gmyth_debug.h"

    41 

    42 static void gmyth_uri_class_init          (GMythURIClass *klass);

    43 static void gmyth_uri_init                (GMythURI *object);

    44 

    45 static void gmyth_uri_dispose  (GObject *object);

    46 static void gmyth_uri_finalize (GObject *object);

    47 

    48 G_DEFINE_TYPE(GMythURI, gmyth_uri, G_TYPE_OBJECT)

    49 

    50 static void

    51 gmyth_uri_parser_setup_and_new( GMythURI *uri, const gchar *value );

    52     

    53 static void

    54 gmyth_uri_class_init (GMythURIClass *klass)

    55 {

    56 	GObjectClass *gobject_class;

    57 

    58     gobject_class = (GObjectClass *) klass;

    59 	

    60     gobject_class->dispose  = gmyth_uri_dispose;

    61     gobject_class->finalize = gmyth_uri_finalize;	

    62 }

    63 

    64 static void

    65 gmyth_uri_init (GMythURI *gmyth_uri)

    66 {

    67 }

    68 

    69 static void

    70 gmyth_uri_dispose  (GObject *object)

    71 {

    72 	GMythURI *gmyth_uri = GMYTH_URI(object);

    73 

    74 	if ( gmyth_uri->host != NULL ) {

    75 		g_string_free( gmyth_uri->host, TRUE );

    76 		gmyth_uri->host = NULL;

    77 	}

    78 	

    79 	if ( gmyth_uri->protocol != NULL ) {

    80 		g_string_free( gmyth_uri->protocol, TRUE );

    81 		gmyth_uri->protocol = NULL;

    82 	}

    83 	

    84 	if ( gmyth_uri->path != NULL ) {

    85 		g_string_free( gmyth_uri->path, TRUE );

    86 		gmyth_uri->path = NULL;

    87 	}

    88 	

    89 	if ( gmyth_uri->fragment != NULL ) {

    90 		g_string_free( gmyth_uri->fragment, TRUE );

    91 		gmyth_uri->fragment = NULL;

    92 	}

    93 	

    94 	if ( gmyth_uri->user != NULL ) {

    95 		g_string_free( gmyth_uri->user, TRUE );

    96 		gmyth_uri->user = NULL;

    97 	}

    98 	

    99 	if ( gmyth_uri->password != NULL ) {

   100 		g_string_free( gmyth_uri->password, TRUE );

   101 		gmyth_uri->password = NULL;

   102 	}

   103 	

   104 	if ( gmyth_uri->query != NULL ) {

   105 		g_string_free( gmyth_uri->query, TRUE );

   106 		gmyth_uri->query = NULL;

   107 	}	

   108 

   109 	G_OBJECT_CLASS (gmyth_uri_parent_class)->dispose (object);

   110 }

   111 

   112 static void

   113 gmyth_uri_finalize (GObject *object)

   114 {

   115 	//GMythURI *gmyth_uri = GMYTH_URI(object);

   116 

   117 	g_signal_handlers_destroy (object);

   118 

   119 	G_OBJECT_CLASS (gmyth_uri_parent_class)->finalize (object);

   120 }

   121 

   122 /** Creates a new instance of GMythURI.

   123  * 

   124  * @return a new instance of GMythURI.

   125  */

   126 GMythURI *

   127 gmyth_uri_new (void) 

   128 {

   129     GMythURI *gmyth_uri = GMYTH_URI (g_object_new (GMYTH_URI_TYPE, NULL));

   130     

   131     return gmyth_uri;

   132 }

   133 

   134 /** Creates a new instance of GMythURI.

   135  * 

   136  * @return a new instance of GMythURI.

   137  */

   138 GMythURI *

   139 gmyth_uri_new_with_value (const gchar *value) 

   140 {

   141     GMythURI *gmyth_uri = GMYTH_URI (g_object_new (GMYTH_URI_TYPE, NULL));

   142     

   143     gmyth_uri_parser_setup_and_new (gmyth_uri, value);

   144     

   145     return gmyth_uri;

   146 }

   147 

   148 static gint 

   149 gmyth_strstr (const gchar *haystack, const gchar *needle)

   150 {

   151 	

   152 	gchar *strPos;

   153 	

   154 	if (haystack == NULL || needle == NULL)

   155 		return -1;

   156 	strPos = strstr(haystack, needle);

   157 	if (strPos == NULL)

   158 		return -1;

   159 		

   160 	return (strPos - haystack);

   161 

   162 }

   163 

   164 static gboolean

   165 gmyth_uri_isabsolute (const GMythURI *uri)

   166 {

   167 	gboolean ret = FALSE;

   168 	

   169 	g_return_val_if_fail( uri != NULL && uri->uri != NULL && uri->protocol != NULL, FALSE );

   170 	

   171 	if ( gmyth_strstr( uri->uri->str, GMYTH_URI_PROTOCOL_DELIM ) == 0 || strlen(uri->protocol->str) > 0 )

   172 		ret = TRUE;

   173 		

   174 	return ret;	

   175 }

   176 

   177 static gint

   178 gmyth_strrchr( const gchar *str, const gchar *chars, const gint nchars )

   179 {

   180 

   181 	gint strLen;

   182 	gint i, j;

   183 	

   184 	if ( str == NULL || chars == NULL )

   185 		return -1;

   186 		

   187 	strLen = strlen( str );

   188 	for ( i= (strLen-1); 0 <= i; i-- ) {

   189 		for ( j=0; j<nchars; j++ ) {

   190 			if ( str[i] == chars[j] )

   191 				return i;

   192 		}

   193 	}

   194 

   195 	return -1;

   196 

   197 }

   198 

   199 static gchar*

   200 gmyth_uri_print_field( const GString* field )

   201 {

   202 	if ( field != NULL && field->str != NULL && strlen(field->str) > 0 )

   203 		return field->str;

   204 	else

   205 		return "";		

   206 }

   207 

   208 static void

   209 gmyth_uri_parser_setup_and_new( GMythURI *uri, const gchar *value )

   210 {

   211 	

   212 	gint 		uriLen;

   213 	gint 		currIdx;

   214 	gint 		protoIdx;

   215 	gint 		atIdx;

   216 	gint 		colonIdx;

   217 	gint 		shashIdx;

   218 	gint 		eIdx;

   219 	gchar 	*host;

   220 	gint 		eblacketIdx;

   221 	gint 		hostLen;

   222 	gint 		sharpIdx;

   223 	/*

   224 	gint 		questionIdx;

   225 	gint 		queryLen;

   226 	*/

   227 	

   228 	uriLen = strlen(value);

   229 	uri->uri = g_string_new( value );

   230 		

   231 	currIdx = 0;

   232 	

   233 	/*** Protocol ****/

   234 	protoIdx = gmyth_strstr (value, GMYTH_URI_PROTOCOL_DELIM);

   235 	if (0 < protoIdx) {

   236         uri->protocol = g_string_new_len (value, protoIdx);

   237 		currIdx += protoIdx + strlen( GMYTH_URI_PROTOCOL_DELIM );

   238 	}

   239 

   240 	/*** User (Password) ****/

   241 	atIdx = gmyth_strstr( value+currIdx, GMYTH_URI_USER_DELIM );

   242 	if ( 0 < atIdx ) {

   243 		colonIdx = gmyth_strstr( value+currIdx, GMYTH_URI_COLON_DELIM );

   244 

   245 		if (0 < colonIdx && colonIdx < atIdx) {

   246             uri->user = g_string_new_len (value+currIdx, colonIdx);

   247             uri->password = g_string_new_len (value+currIdx+colonIdx+1, atIdx - (colonIdx+1));

   248 		}

   249 		else

   250             uri->user = g_string_new_len (value+currIdx, atIdx - currIdx);

   251 		currIdx += atIdx + 1;

   252 	}

   253 

   254 	/*** Host (Port) ****/

   255 	shashIdx = gmyth_strstr( value+currIdx, GMYTH_URI_SLASH_DELIM );

   256 	if (0 < shashIdx)

   257         uri->host = g_string_new_len (value+currIdx, shashIdx);

   258 	else if ( gmyth_uri_isabsolute(uri) == TRUE )

   259         uri->host = g_string_new_len (value+currIdx, strlen (value) - currIdx);

   260 

   261 	host = gmyth_uri_get_host(uri);

   262 	colonIdx = gmyth_strrchr (host, GMYTH_URI_COLON_DELIM, 1);

   263 	eblacketIdx = gmyth_strrchr (host, GMYTH_URI_EBLACET_DELIM, 1);

   264 	if ( ( 0 < colonIdx ) && ( eblacketIdx < colonIdx ) ) {

   265         GString *portStr = NULL;

   266 		GString *hostStr = g_string_new  (host != NULL ? host : "");

   267 

   268 		hostLen = hostStr->len;

   269 		/**** host ****/

   270 		uri->host = g_string_erase (uri->host, 0, hostLen);

   271 		uri->host = g_string_insert_len (uri->host, 0, hostStr->str, colonIdx);

   272 		if (0 < hostLen) {

   273 			if (host[0] == '[' && host[hostLen-1] == ']')

   274                 uri->host = g_string_new_len (hostStr->str+1, colonIdx-2);

   275 		}

   276 		/**** port ****/

   277 		portStr = g_string_new_len (hostStr->str+colonIdx+1, hostLen-colonIdx-1);

   278 		uri->port = (gint)g_ascii_strtoull( portStr->str, NULL, 10 );

   279 		g_string_free (portStr, TRUE);

   280 		g_string_free (hostStr, TRUE);

   281 	}

   282 	else {

   283         const gchar* protocol = gmyth_uri_get_protocol(uri);

   284 		uri->port = GMYTH_URI_KNKOWN_PORT;

   285 		if ( strcmp(protocol, GMYTH_URI_PROTOCOL_HTTP) == 0 )

   286 			uri->port = GMYTH_URI_DEFAULT_HTTP_PORT;

   287 		if ( strcmp(protocol, GMYTH_URI_PROTOCOL_FTP) == 0 )

   288 			uri->port = GMYTH_URI_DEFAULT_FTP_PORT;

   289 	}

   290 	

   291 	if (shashIdx > 0) currIdx += shashIdx;

   292 	

   293 	/*

   294 		Handle relative URL

   295 	*/

   296 	if (gmyth_uri_isabsolute(uri) == FALSE)

   297 	{

   298 

   299 		if (shashIdx != 0)

   300 		{

   301 			/* Add slash delimiter at the beginning of the URL,

   302 			   if it doesn't exist 

   303 			*/

   304 			uri->path = g_string_new( GMYTH_URI_SLASH_DELIM );

   305 		}

   306 		uri->path = g_string_append( uri->path, value );

   307 		

   308 	} else {

   309 		/* First set path simply to the rest of URI */

   310 		uri->path = g_string_new_len (value+currIdx,  uriLen-currIdx );

   311 	}

   312 	

   313 	gmyth_debug( "uri value:  %s", value );

   314 	uri->query = g_string_new ( g_strstr_len( value, strlen(value), GMYTH_URI_E_DELIM ) );

   315 	

   316 	eIdx = gmyth_strstr( value+currIdx, GMYTH_URI_E_DELIM );

   317 	

   318 	if ( 0 < eIdx ) {

   319 		uri->query = g_string_new ( g_strstr_len( value, strlen(value), GMYTH_URI_E_DELIM ) );

   320 		gmyth_debug( "query = %s", uri->query->str );

   321 	}

   322 	

   323 	/**** Path (Query/Fragment) ****/

   324 	sharpIdx = gmyth_strstr(value+currIdx, GMYTH_URI_SHARP_DELIM);

   325 	if (0 < sharpIdx) {

   326 		uri->path = g_string_append_len( uri->path, value+currIdx, sharpIdx);

   327 		uri->fragment = g_string_new_len (value+currIdx+sharpIdx+1, uriLen-(currIdx+sharpIdx+1));

   328 	}	

   329 

   330 	gmyth_debug( "[%s] GMythURI: host = %s, port = %d, path = %s, query = %s, fragment = %s, "\

   331 								"user = %s, password = %s.\n", __FUNCTION__, gmyth_uri_print_field( uri->host ), uri->port,

   332 													gmyth_uri_print_field( uri->path ), gmyth_uri_print_field( uri->query ), gmyth_uri_print_field( uri->fragment ),

   333 													gmyth_uri_print_field ( uri->user ), gmyth_uri_print_field( uri->password ) );

   334 

   335 }

   336 

   337 gboolean

   338 gmyth_uri_is_equals( GMythURI* uri1, GMythURI* uri2 )

   339 {

   340 	return ( g_ascii_strcasecmp( gmyth_uri_get_host( uri1 ), gmyth_uri_get_host( uri2 ) ) == 0 &&

   341 				gmyth_uri_get_port( uri1 ) == gmyth_uri_get_port( uri2 ) );

   342 }

   343 

   344 gboolean

   345 gmyth_uri_is_livetv( GMythURI* uri )

   346 {

   347 	gboolean ret = FALSE;

   348 	

   349 	g_return_val_if_fail( uri != NULL && uri->uri != NULL && uri->uri->str != NULL, FALSE );

   350 	

   351 	ret = ( g_strstr_len( uri->uri->str, strlen( uri->uri->str ), "/?" ) != NULL );

   352 	

   353 	if ( ret )

   354 		gmyth_debug( "This URI is a LiveTV recording..." );

   355 	

   356 	return ret;

   357 	

   358 }

   359 

   360 gchar*

   361 gmyth_uri_get_channel_name( GMythURI* uri )

   362 {

   363 	gchar* channel = NULL;

   364 	

   365 	g_return_val_if_fail( uri != NULL && uri->uri != NULL && uri->uri->str != NULL, FALSE );

   366 	

   367 	gchar *channel_query = g_strstr_len( gmyth_uri_get_query( uri ), strlen( gmyth_uri_get_query( uri ) ), "channel" );

   368 	

   369 	if ( channel_query != NULL )

   370 	{

   371 		gmyth_debug( "TV Channel is in the following URI segment: %s", channel_query );

   372 		

   373 		gchar **chan_key_value = g_strsplit( gmyth_uri_get_query( uri ), "=", 2 );

   374 		

   375 		/* gmyth_debug( "Channel tuple is [ %s, %s ]", chan_key_value[0], chan_key_value[1] ); */

   376 

   377 		if ( chan_key_value[1] != NULL )

   378 		{

   379 			channel = g_strdup( chan_key_value[1] ); 

   380 		}

   381 

   382 		if ( chan_key_value != NULL )		

   383 			g_strfreev( chan_key_value );

   384 	}

   385 	

   386 	gmyth_debug( "Got channel decimal value from the URI: %s", channel );

   387 

   388 	return channel;

   389 	

   390 }

   391 

   392 gint

   393 gmyth_uri_get_channel_num( GMythURI* uri )

   394 {

   395 	gchar *channel_name = gmyth_uri_get_channel_name( uri );

   396 	

   397 	if ( channel_name != NULL )

   398 	{

   399 		return g_ascii_strtoull( channel_name, NULL, 10 ); 

   400 	}

   401 	

   402 	return -1;

   403 	

   404 }
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