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(trunk libT) #4437 "Multi file webseeds don't work" -- handle multifile torrents with web seed urls that incorrectly don't end with a slash.

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This commit is contained in:
Jordan Lee
2011-09-06 16:45:48 +00:00
parent b3db349c83
commit cfa4077e5e
1 changed files with 34 additions and 6 deletions
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libtransmission/metainfo.c
+34 -6
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@@ -354,6 +354,34 @@ getannounce( tr_info * inf, tr_benc * meta )
return NULL;
}
/**
* @brief Ensure that the URLs for multfile torrents end in a slash.
*
* See http://bittorrent.org/beps/bep_0019.html#metadata-extension
* for background on how the trailing slash is used for "url-list"
* fields.
*
* This function is to workaround some .torrent generators, such as
* mktorrent and very old versions of utorrent, that don't add the
* trailing slash for multifile torrents if omitted by the end user.
*/
static char*
fix_webseed_url( const tr_info * inf, const char * url )
{
char * ret = NULL;
const size_t len = strlen( url );
if( tr_urlIsValid( url, len ) )
{
if( ( inf->fileCount > 1 ) && ( len > 0 ) && ( url[len-1] != '/' ) )
ret = tr_strdup_printf( "%*.*s/", (int)len, (int)len, url );
else
ret = tr_strndup( url, len );
}
return ret;
}
static void
geturllist( tr_info * inf,
tr_benc * meta )
@@ -373,22 +401,22 @@ geturllist( tr_info * inf,
{
if( tr_bencGetStr( tr_bencListChild( urls, i ), &url ) )
{
const size_t len = strlen( url );
char * fixed_url = fix_webseed_url( inf, url );
if( tr_urlIsValid( url, len ) )
inf->webseeds[inf->webseedCount++] = tr_strndup( url, len );
if( fixed_url != NULL )
inf->webseeds[inf->webseedCount++] = fixed_url;
}
}
}
else if( tr_bencDictFindStr( meta, "url-list", &url ) ) /* handle single items in webseeds */
{
const size_t len = strlen( url );
char * fixed_url = fix_webseed_url( inf, url );
if( tr_urlIsValid( url, len ) )
if( fixed_url != NULL )
{
inf->webseedCount = 1;
inf->webseeds = tr_new0( char*, 1 );
inf->webseeds[0] = tr_strndup( url, len );
inf->webseeds[0] = fixed_url;
}
}
}