From 8f416baead93a48e5799e44b8bd2e2c4859f4e04 Mon Sep 17 00:00:00 2001 From: Pierre Schmitz Date: Fri, 14 Sep 2007 13:18:58 +0200 Subject: auf Version 1.11 aktualisiert; Login-Bug behoben --- includes/MimeMagic.php | 538 +++++++++++++++++++++++++++---------------------- 1 file changed, 293 insertions(+), 245 deletions(-) (limited to 'includes/MimeMagic.php') diff --git a/includes/MimeMagic.php b/includes/MimeMagic.php index db35535d..264a3595 100644 --- a/includes/MimeMagic.php +++ b/includes/MimeMagic.php @@ -111,56 +111,67 @@ class MimeMagic { * --- load mime.types --- */ - global $wgMimeTypeFile; + global $wgMimeTypeFile, $IP; - $types= MM_WELL_KNOWN_MIME_TYPES; + $types = MM_WELL_KNOWN_MIME_TYPES; - if ($wgMimeTypeFile) { - if (is_file($wgMimeTypeFile) and is_readable($wgMimeTypeFile)) { - wfDebug("MimeMagic::MimeMagic: loading mime types from $wgMimeTypeFile\n"); - - $types.= "\n"; - $types.= file_get_contents($wgMimeTypeFile); + if ( $wgMimeTypeFile == 'includes/mime.types' ) { + $wgMimeTypeFile = "$IP/$wgMimeTypeFile"; + } + + if ( $wgMimeTypeFile ) { + if ( is_file( $wgMimeTypeFile ) and is_readable( $wgMimeTypeFile ) ) { + wfDebug( __METHOD__.": loading mime types from $wgMimeTypeFile\n" ); + $types .= "\n"; + $types .= file_get_contents( $wgMimeTypeFile ); + } else { + wfDebug( __METHOD__.": can't load mime types from $wgMimeTypeFile\n" ); } - else wfDebug("MimeMagic::MimeMagic: can't load mime types from $wgMimeTypeFile\n"); + } else { + wfDebug( __METHOD__.": no mime types file defined, using build-ins only.\n" ); } - else wfDebug("MimeMagic::MimeMagic: no mime types file defined, using build-ins only.\n"); - $types= str_replace(array("\r\n","\n\r","\n\n","\r\r","\r"),"\n",$types); - $types= str_replace("\t"," ",$types); + $types = str_replace( array( "\r\n", "\n\r", "\n\n", "\r\r", "\r" ), "\n", $types ); + $types = str_replace( "\t", " ", $types ); - $this->mMimeToExt= array(); - $this->mToMime= array(); + $this->mMimeToExt = array(); + $this->mToMime = array(); - $lines= explode("\n",$types); - foreach ($lines as $s) { - $s= trim($s); - if (empty($s)) continue; - if (strpos($s,'#')===0) continue; + $lines = explode( "\n",$types ); + foreach ( $lines as $s ) { + $s = trim( $s ); + if ( empty( $s ) ) continue; + if ( strpos( $s, '#' ) === 0 ) continue; - $s= strtolower($s); - $i= strpos($s,' '); + $s = strtolower( $s ); + $i = strpos( $s, ' ' ); - if ($i===false) continue; + if ( $i === false ) continue; #print "processing MIME line $s
"; - $mime= substr($s,0,$i); - $ext= trim(substr($s,$i+1)); + $mime = substr( $s, 0, $i ); + $ext = trim( substr($s, $i+1 ) ); - if (empty($ext)) continue; + if ( empty( $ext ) ) continue; - if ( !empty($this->mMimeToExt[$mime])) $this->mMimeToExt[$mime] .= ' '.$ext; - else $this->mMimeToExt[$mime]= $ext; + if ( !empty( $this->mMimeToExt[$mime] ) ) { + $this->mMimeToExt[$mime] .= ' ' . $ext; + } else { + $this->mMimeToExt[$mime] = $ext; + } - $extensions= explode(' ',$ext); + $extensions = explode( ' ', $ext ); - foreach ($extensions as $e) { - $e= trim($e); - if (empty($e)) continue; + foreach ( $extensions as $e ) { + $e = trim( $e ); + if ( empty( $e ) ) continue; - if ( !empty($this->mExtToMime[$e])) $this->mExtToMime[$e] .= ' '.$mime; - else $this->mExtToMime[$e]= $mime; + if ( !empty( $this->mExtToMime[$e] ) ) { + $this->mExtToMime[$e] .= ' ' . $mime; + } else { + $this->mExtToMime[$e] = $mime; + } } } @@ -169,62 +180,69 @@ class MimeMagic { */ global $wgMimeInfoFile; + if ( $wgMimeInfoFile == 'includes/mime.info' ) { + $wgMimeInfoFile = "$IP/$wgMimeInfoFile"; + } - $info= MM_WELL_KNOWN_MIME_INFO; - - if ($wgMimeInfoFile) { - if (is_file($wgMimeInfoFile) and is_readable($wgMimeInfoFile)) { - wfDebug("MimeMagic::MimeMagic: loading mime info from $wgMimeInfoFile\n"); + $info = MM_WELL_KNOWN_MIME_INFO; - $info.= "\n"; - $info.= file_get_contents($wgMimeInfoFile); + if ( $wgMimeInfoFile ) { + if ( is_file( $wgMimeInfoFile ) and is_readable( $wgMimeInfoFile ) ) { + wfDebug( __METHOD__.": loading mime info from $wgMimeInfoFile\n" ); + $info .= "\n"; + $info .= file_get_contents( $wgMimeInfoFile ); + } else { + wfDebug(__METHOD__.": can't load mime info from $wgMimeInfoFile\n"); } - else wfDebug("MimeMagic::MimeMagic: can't load mime info from $wgMimeInfoFile\n"); + } else { + wfDebug(__METHOD__.": no mime info file defined, using build-ins only.\n"); } - else wfDebug("MimeMagic::MimeMagic: no mime info file defined, using build-ins only.\n"); - $info= str_replace(array("\r\n","\n\r","\n\n","\r\r","\r"),"\n",$info); - $info= str_replace("\t"," ",$info); + $info = str_replace( array( "\r\n", "\n\r", "\n\n", "\r\r", "\r" ), "\n", $info); + $info = str_replace( "\t", " ", $info ); - $this->mMimeTypeAliases= array(); - $this->mMediaTypes= array(); + $this->mMimeTypeAliases = array(); + $this->mMediaTypes = array(); - $lines= explode("\n",$info); - foreach ($lines as $s) { - $s= trim($s); - if (empty($s)) continue; - if (strpos($s,'#')===0) continue; + $lines = explode( "\n", $info ); + foreach ( $lines as $s ) { + $s = trim( $s ); + if ( empty( $s ) ) continue; + if ( strpos( $s, '#' ) === 0 ) continue; - $s= strtolower($s); - $i= strpos($s,' '); + $s = strtolower( $s ); + $i = strpos( $s, ' ' ); - if ($i===false) continue; + if ( $i === false ) continue; #print "processing MIME INFO line $s
"; - $match= array(); - if (preg_match('!\[\s*(\w+)\s*\]!',$s,$match)) { - $s= preg_replace('!\[\s*(\w+)\s*\]!','',$s); - $mtype= trim(strtoupper($match[1])); + $match = array(); + if ( preg_match( '!\[\s*(\w+)\s*\]!', $s, $match ) ) { + $s = preg_replace( '!\[\s*(\w+)\s*\]!', '', $s ); + $mtype = trim( strtoupper( $match[1] ) ); + } else { + $mtype = MEDIATYPE_UNKNOWN; } - else $mtype= MEDIATYPE_UNKNOWN; - $m= explode(' ',$s); + $m = explode( ' ', $s ); - if (!isset($this->mMediaTypes[$mtype])) $this->mMediaTypes[$mtype]= array(); + if ( !isset( $this->mMediaTypes[$mtype] ) ) { + $this->mMediaTypes[$mtype] = array(); + } - foreach ($m as $mime) { - $mime= trim($mime); - if (empty($mime)) continue; + foreach ( $m as $mime ) { + $mime = trim( $mime ); + if ( empty( $mime ) ) continue; - $this->mMediaTypes[$mtype][]= $mime; + $this->mMediaTypes[$mtype][] = $mime; } - if (sizeof($m)>1) { - $main= $m[0]; - for ($i=1; $imMimeTypeAliases[$mime]= $main; + if ( sizeof( $m ) > 1 ) { + $main = $m[0]; + for ( $i=1; $imMimeTypeAliases[$mime] = $main; } } } @@ -244,14 +262,14 @@ class MimeMagic { /** returns a list of file extensions for a given mime type * as a space separated string. */ - function getExtensionsForType($mime) { - $mime= strtolower($mime); + function getExtensionsForType( $mime ) { + $mime = strtolower( $mime ); - $r= @$this->mMimeToExt[$mime]; + $r = @$this->mMimeToExt[$mime]; - if (@!$r and isset($this->mMimeTypeAliases[$mime])) { - $mime= $this->mMimeTypeAliases[$mime]; - $r= @$this->mMimeToExt[$mime]; + if ( @!$r and isset( $this->mMimeTypeAliases[$mime] ) ) { + $mime = $this->mMimeTypeAliases[$mime]; + $r = @$this->mMimeToExt[$mime]; } return $r; @@ -260,22 +278,22 @@ class MimeMagic { /** returns a list of mime types for a given file extension * as a space separated string. */ - function getTypesForExtension($ext) { - $ext= strtolower($ext); + function getTypesForExtension( $ext ) { + $ext = strtolower( $ext ); - $r= isset( $this->mExtToMime[$ext] ) ? $this->mExtToMime[$ext] : null; + $r = isset( $this->mExtToMime[$ext] ) ? $this->mExtToMime[$ext] : null; return $r; } /** returns a single mime type for a given file extension. * This is always the first type from the list returned by getTypesForExtension($ext). */ - function guessTypesForExtension($ext) { - $m= $this->getTypesForExtension( $ext ); - if( is_null($m) ) return NULL; + function guessTypesForExtension( $ext ) { + $m = $this->getTypesForExtension( $ext ); + if ( is_null( $m ) ) return NULL; - $m= trim( $m ); - $m= preg_replace('/\s.*$/','',$m); + $m = trim( $m ); + $m = preg_replace( '/\s.*$/', '', $m ); return $m; } @@ -285,17 +303,17 @@ class MimeMagic { * returns true if a match was found, NULL if the mime type is unknown, * and false if the mime type is known but no matches where found. */ - function isMatchingExtension($extension,$mime) { - $ext= $this->getExtensionsForType($mime); + function isMatchingExtension( $extension, $mime ) { + $ext = $this->getExtensionsForType( $mime ); - if (!$ext) { + if ( !$ext ) { return NULL; //unknown } - $ext= explode(' ',$ext); + $ext = explode( ' ', $ext ); - $extension= strtolower($extension); - if (in_array($extension,$ext)) { + $extension = strtolower( $extension ); + if ( in_array( $extension, $ext ) ) { return true; } @@ -347,16 +365,18 @@ class MimeMagic { * or misinterpreter by the default mime detection (namely xml based formats like XHTML or SVG). * * @param string $file The file to check - * @param bool $useExt switch for allowing to use the file extension to guess the mime type. true by default. + * @param mixed $ext The file extension, or true to extract it from the filename. + * Set it to false to ignore the extension. * * @return string the mime type of $file */ - function guessMimeType( $file, $useExt=true ) { - $fname = 'MimeMagic::guessMimeType'; - $mime= $this->detectMimeType($file,$useExt); + function guessMimeType( $file, $ext = true ) { + $mime = $this->detectMimeType( $file, $ext ); // Read a chunk of the file + wfSuppressWarnings(); $f = fopen( $file, "rt" ); + wfRestoreWarnings(); if( !$f ) return "unknown/unknown"; $head = fread( $f, 1024 ); fclose( $f ); @@ -369,67 +389,88 @@ class MimeMagic { $mime = "application/x-msmetafile"; } - if (strpos($mime,"text/")===0 || $mime==="application/xml") { + if ( strpos( $mime, "text/" ) === 0 || $mime === "application/xml" ) { - $xml_type= NULL; - $script_type= NULL; + $xml_type = NULL; + $script_type = NULL; /* * look for XML formats (XHTML and SVG) */ - if ($mime==="text/sgml" || - $mime==="text/plain" || - $mime==="text/html" || - $mime==="text/xml" || - $mime==="application/xml") { - - if (substr($head,0,5)=="%sim',$head,$match)) $doctype= $match[1]; - if (preg_match('%<(\w+).*>%sim',$head,$match)) $tag= $match[1]; + if ( preg_match( '%%sim', + $head, $match ) ) { + $doctype = $match[1]; + } + if ( preg_match( '%<(\w+).*>%sim', $head, $match ) ) { + $tag = $match[1]; + } #print "
ANALYSING $file ($mime): doctype= $doctype; tag= $tag
"; - if (strpos($doctype,"-//W3C//DTD SVG")===0) $mime= "image/svg+xml"; - elseif ($tag==="svg") $mime= "image/svg+xml"; - elseif (strpos($doctype,"-//W3C//DTD XHTML")===0) $mime= "text/html"; - elseif ($tag==="html") $mime= "text/html"; + if ( strpos( $doctype, "-//W3C//DTD SVG" ) === 0 ) { + $mime = "image/svg+xml"; + } elseif ( $tag === "svg" ) { + $mime = "image/svg+xml"; + } elseif ( strpos( $doctype, "-//W3C//DTD XHTML" ) === 0 ) { + $mime = "text/html"; + } elseif ( $tag === "html" ) { + $mime = "text/html"; + } } } /* * look for shell scripts */ - if (!$xml_type) { - $script_type= NULL; - - #detect by shebang - if (substr($head,0,2)=="#!") $script_type= "ASCII"; - elseif (substr($head,0,5)=="\xef\xbb\xbf#!") $script_type= "UTF-8"; - elseif (substr($head,0,7)=="\xfe\xff\x00#\x00!") $script_type= "UTF-16BE"; - elseif (substr($head,0,7)=="\xff\xfe#\x00!") $script_type= "UTF-16LE"; + if ( !$xml_type ) { + $script_type = NULL; + + # detect by shebang + if ( substr( $head, 0, 2) == "#!" ) { + $script_type = "ASCII"; + } elseif ( substr( $head, 0, 5) == "\xef\xbb\xbf#!" ) { + $script_type = "UTF-8"; + } elseif ( substr( $head, 0, 7) == "\xfe\xff\x00#\x00!" ) { + $script_type = "UTF-16BE"; + } elseif ( substr( $head, 0, 7 ) == "\xff\xfe#\x00!" ) { + $script_type= "UTF-16LE"; + } - if ($script_type) { - if ($script_type!=="UTF-8" && $script_type!=="ASCII") $head= iconv($script_type,"ASCII//IGNORE",$head); + if ( $script_type ) { + if ( $script_type !== "UTF-8" && $script_type !== "ASCII") { + $head = iconv( $script_type, "ASCII//IGNORE", $head); + } - $match= array(); - $prog= ""; + $match = array(); - if (preg_match('%/?([^\s]+/)(w+)%sim',$head,$match)) { - $script= $match[2]; // FIXME: $script variable not used; should this be "$prog = $match[2];" instead? + if ( preg_match( '%/?([^\s]+/)(\w+)%', $head, $match ) ) { + $mime = "application/x-{$match[2]}"; } - - $mime= "application/x-$prog"; } } @@ -450,42 +491,43 @@ class MimeMagic { ( strpos( $head, "<\x00?\x00\t" ) !== false ) || ( strpos( $head, "<\x00?\x00=" ) !== false ) ) { - $mime= "application/x-php"; + $mime = "application/x-php"; } } } - if (isset($this->mMimeTypeAliases[$mime])) $mime= $this->mMimeTypeAliases[$mime]; + if ( isset( $this->mMimeTypeAliases[$mime] ) ) { + $mime = $this->mMimeTypeAliases[$mime]; + } - wfDebug("$fname: final mime type of $file: $mime\n"); + wfDebug(__METHOD__.": final mime type of $file: $mime\n"); return $mime; } /** Internal mime type detection, please use guessMimeType() for application code instead. * Detection is done using an external program, if $wgMimeDetectorCommand is set. * Otherwise, the fileinfo extension and mime_content_type are tried (in this order), if they are available. - * If the dections fails and $useExt is true, the mime type is guessed from the file extension, using guessTypesForExtension. + * If the dections fails and $ext is not false, the mime type is guessed from the file extension, using + * guessTypesForExtension. * If the mime type is still unknown, getimagesize is used to detect the mime type if the file is an image. * If no mime type can be determined, this function returns "unknown/unknown". * * @param string $file The file to check - * @param bool $useExt switch for allowing to use the file extension to guess the mime type. true by default. + * @param mixed $ext The file extension, or true to extract it from the filename. + * Set it to false to ignore the extension. * * @return string the mime type of $file * @access private */ - function detectMimeType( $file, $useExt=true ) { - $fname = 'MimeMagic::detectMimeType'; - + function detectMimeType( $file, $ext = true ) { global $wgMimeDetectorCommand; - $m= NULL; - if ($wgMimeDetectorCommand) { - $fn= wfEscapeShellArg($file); - $m= `$wgMimeDetectorCommand $fn`; - } - else if (function_exists("finfo_open") && function_exists("finfo_file")) { + $m = NULL; + if ( $wgMimeDetectorCommand ) { + $fn = wfEscapeShellArg( $file ); + $m = `$wgMimeDetectorCommand $fn`; + } elseif ( function_exists( "finfo_open" ) && function_exists( "finfo_file" ) ) { # This required the fileinfo extension by PECL, # see http://pecl.php.net/package/fileinfo @@ -500,13 +542,12 @@ class MimeMagic { $mime_magic_resource = finfo_open(FILEINFO_MIME); /* return mime type ala mimetype extension */ if ($mime_magic_resource) { - $m= finfo_file($mime_magic_resource, $file); - - finfo_close($mime_magic_resource); + $m = finfo_file( $mime_magic_resource, $file ); + finfo_close( $mime_magic_resource ); + } else { + wfDebug( __METHOD__.": finfo_open failed on ".FILEINFO_MIME."!\n" ); } - else wfDebug("$fname: finfo_open failed on ".FILEINFO_MIME."!\n"); - } - else if (function_exists("mime_content_type")) { + } elseif ( function_exists( "mime_content_type" ) ) { # NOTE: this function is available since PHP 4.3.0, but only if # PHP was compiled with --with-mime-magic or, before 4.3.2, with --enable-mime-magic. @@ -517,93 +558,99 @@ class MimeMagic { # Also note that this has been DEPRECATED in favor of the fileinfo extension by PECL, see above. # see http://www.php.net/manual/en/ref.mime-magic.php for details. - $m= mime_content_type($file); + $m = mime_content_type($file); if ( $m == 'text/plain' ) { // mime_content_type sometimes considers DJVU files to be text/plain. $deja = new DjVuImage( $file ); if( $deja->isValid() ) { - wfDebug("$fname: (re)detected $file as image/vnd.djvu\n"); + wfDebug( __METHOD__.": (re)detected $file as image/vnd.djvu\n" ); $m = 'image/vnd.djvu'; } } + } else { + wfDebug( __METHOD__.": no magic mime detector found!\n" ); } - else wfDebug("$fname: no magic mime detector found!\n"); - if ($m) { - #normalize - $m= preg_replace('![;, ].*$!','',$m); #strip charset, etc - $m= trim($m); - $m= strtolower($m); + if ( $m ) { + # normalize + $m = preg_replace( '![;, ].*$!', '', $m ); #strip charset, etc + $m = trim( $m ); + $m = strtolower( $m ); - if (strpos($m,'unknown')!==false) $m= NULL; - else { - wfDebug("$fname: magic mime type of $file: $m\n"); + if ( strpos( $m, 'unknown' ) !== false ) { + $m = NULL; + } else { + wfDebug( __METHOD__.": magic mime type of $file: $m\n" ); return $m; } } - #if still not known, use getimagesize to find out the type of image - #TODO: skip things that do not have a well-known image extension? Would that be safe? + # if still not known, use getimagesize to find out the type of image + # TODO: skip things that do not have a well-known image extension? Would that be safe? wfSuppressWarnings(); $gis = getimagesize( $file ); wfRestoreWarnings(); - $notAnImage= false; - - if ($gis && is_array($gis) && $gis[2]) { - switch ($gis[2]) { - case IMAGETYPE_GIF: $m= "image/gif"; break; - case IMAGETYPE_JPEG: $m= "image/jpeg"; break; - case IMAGETYPE_PNG: $m= "image/png"; break; - case IMAGETYPE_SWF: $m= "application/x-shockwave-flash"; break; - case IMAGETYPE_PSD: $m= "application/photoshop"; break; - case IMAGETYPE_BMP: $m= "image/bmp"; break; - case IMAGETYPE_TIFF_II: $m= "image/tiff"; break; - case IMAGETYPE_TIFF_MM: $m= "image/tiff"; break; - case IMAGETYPE_JPC: $m= "image"; break; - case IMAGETYPE_JP2: $m= "image/jpeg2000"; break; - case IMAGETYPE_JPX: $m= "image/jpeg2000"; break; - case IMAGETYPE_JB2: $m= "image"; break; - case IMAGETYPE_SWC: $m= "application/x-shockwave-flash"; break; - case IMAGETYPE_IFF: $m= "image/vnd.xiff"; break; - case IMAGETYPE_WBMP: $m= "image/vnd.wap.wbmp"; break; - case IMAGETYPE_XBM: $m= "image/x-xbitmap"; break; + $notAnImage = false; + + if ( $gis && is_array($gis) && $gis[2] ) { + + switch ( $gis[2] ) { + case IMAGETYPE_GIF: $m = "image/gif"; break; + case IMAGETYPE_JPEG: $m = "image/jpeg"; break; + case IMAGETYPE_PNG: $m = "image/png"; break; + case IMAGETYPE_SWF: $m = "application/x-shockwave-flash"; break; + case IMAGETYPE_PSD: $m = "application/photoshop"; break; + case IMAGETYPE_BMP: $m = "image/bmp"; break; + case IMAGETYPE_TIFF_II: $m = "image/tiff"; break; + case IMAGETYPE_TIFF_MM: $m = "image/tiff"; break; + case IMAGETYPE_JPC: $m = "image"; break; + case IMAGETYPE_JP2: $m = "image/jpeg2000"; break; + case IMAGETYPE_JPX: $m = "image/jpeg2000"; break; + case IMAGETYPE_JB2: $m = "image"; break; + case IMAGETYPE_SWC: $m = "application/x-shockwave-flash"; break; + case IMAGETYPE_IFF: $m = "image/vnd.xiff"; break; + case IMAGETYPE_WBMP: $m = "image/vnd.wap.wbmp"; break; + case IMAGETYPE_XBM: $m = "image/x-xbitmap"; break; } - if ($m) { - wfDebug("$fname: image mime type of $file: $m\n"); + if ( $m ) { + wfDebug( __METHOD__.": image mime type of $file: $m\n" ); return $m; } - else $notAnImage= true; + else { + $notAnImage = true; + } } else { // Also test DjVu $deja = new DjVuImage( $file ); if( $deja->isValid() ) { - wfDebug("$fname: detected $file as image/vnd.djvu\n"); + wfDebug( __METHOD__.": detected $file as image/vnd.djvu\n" ); return 'image/vnd.djvu'; } } - #if desired, look at extension as a fallback. - if ($useExt) { + # if desired, look at extension as a fallback. + if ( $ext === true ) { $i = strrpos( $file, '.' ); - $e= strtolower( $i ? substr( $file, $i + 1 ) : '' ); - - $m= $this->guessTypesForExtension($e); + $ext = strtolower( $i ? substr( $file, $i + 1 ) : '' ); + } + if ( $ext ) { + $m = $this->guessTypesForExtension( $ext ); - #TODO: if $notAnImage is set, do not trust the file extension if + # TODO: if $notAnImage is set, do not trust the file extension if # the results is one of the image types that should have been recognized # by getimagesize - if ($m) { - wfDebug("$fname: extension mime type of $file: $m\n"); + if ( $m ) { + wfDebug( __METHOD__.": extension mime type of $file: $m\n" ); return $m; } } #unknown type - wfDebug("$fname: failed to guess mime type for $file!\n"); + wfDebug( __METHOD__.": failed to guess mime type for $file!\n" ); return "unknown/unknown"; } @@ -623,61 +670,61 @@ class MimeMagic { * * @return (int?string?) a value to be used with the MEDIATYPE_xxx constants. */ - function getMediaType($path=NULL,$mime=NULL) { + function getMediaType( $path = NULL, $mime = NULL ) { if( !$mime && !$path ) return MEDIATYPE_UNKNOWN; - #if mime type is unknown, guess it - if( !$mime ) $mime= $this->guessMimeType($path,false); + # If mime type is unknown, guess it + if( !$mime ) $mime = $this->guessMimeType( $path, false ); - #special code for ogg - detect if it's video (theora), - #else label it as sound. - if( $mime=="application/ogg" && file_exists($path) ) { + # Special code for ogg - detect if it's video (theora), + # else label it as sound. + if( $mime == "application/ogg" && file_exists( $path ) ) { // Read a chunk of the file $f = fopen( $path, "rt" ); - if( !$f ) return MEDIATYPE_UNKNOWN; + if ( !$f ) return MEDIATYPE_UNKNOWN; $head = fread( $f, 256 ); fclose( $f ); - $head= strtolower( $head ); + $head = strtolower( $head ); - #This is an UGLY HACK, file should be parsed correctly - if( strpos($head,'theora')!==false ) return MEDIATYPE_VIDEO; - elseif( strpos($head,'vorbis')!==false ) return MEDIATYPE_AUDIO; - elseif( strpos($head,'flac')!==false ) return MEDIATYPE_AUDIO; - elseif( strpos($head,'speex')!==false ) return MEDIATYPE_AUDIO; + # This is an UGLY HACK, file should be parsed correctly + if ( strpos( $head, 'theora' ) !== false ) return MEDIATYPE_VIDEO; + elseif ( strpos( $head, 'vorbis' ) !== false ) return MEDIATYPE_AUDIO; + elseif ( strpos( $head, 'flac' ) !== false ) return MEDIATYPE_AUDIO; + elseif ( strpos( $head, 'speex' ) !== false ) return MEDIATYPE_AUDIO; else return MEDIATYPE_MULTIMEDIA; } - #check for entry for full mime type + # check for entry for full mime type if( $mime ) { - $type= $this->findMediaType($mime); - if( $type!==MEDIATYPE_UNKNOWN ) return $type; + $type = $this->findMediaType( $mime ); + if( $type !== MEDIATYPE_UNKNOWN ) return $type; } - #check for entry for file extension - $e= NULL; - if( $path ) { + # Check for entry for file extension + $e = NULL; + if ( $path ) { $i = strrpos( $path, '.' ); - $e= strtolower( $i ? substr( $path, $i + 1 ) : '' ); + $e = strtolower( $i ? substr( $path, $i + 1 ) : '' ); - #TODO: look at multi-extension if this fails, parse from full path + # TODO: look at multi-extension if this fails, parse from full path - $type= $this->findMediaType('.'.$e); - if( $type!==MEDIATYPE_UNKNOWN ) return $type; + $type = $this->findMediaType( '.' . $e ); + if ( $type !== MEDIATYPE_UNKNOWN ) return $type; } - #check major mime type + # Check major mime type if( $mime ) { - $i= strpos($mime,'/'); + $i = strpos( $mime, '/' ); if( $i !== false ) { - $major= substr($mime,0,$i); - $type= $this->findMediaType($major); - if( $type!==MEDIATYPE_UNKNOWN ) return $type; + $major = substr( $mime, 0, $i ); + $type = $this->findMediaType( $major ); + if( $type !== MEDIATYPE_UNKNOWN ) return $type; } } - if( !$type ) $type= MEDIATYPE_UNKNOWN; + if( !$type ) $type = MEDIATYPE_UNKNOWN; return $type; } @@ -689,25 +736,26 @@ class MimeMagic { * This funktion relies on the mapping defined by $this->mMediaTypes * @access private */ - function findMediaType($extMime) { - - if (strpos($extMime,'.')===0) { #if it's an extension, look up the mime types - $m= $this->getTypesForExtension(substr($extMime,1)); - if (!$m) return MEDIATYPE_UNKNOWN; - - $m= explode(' ',$m); - } - else { #normalize mime type - if (isset($this->mMimeTypeAliases[$extMime])) { - $extMime= $this->mMimeTypeAliases[$extMime]; + function findMediaType( $extMime ) { + if ( strpos( $extMime, '.' ) === 0 ) { #if it's an extension, look up the mime types + $m = $this->getTypesForExtension( substr( $extMime, 1 ) ); + if ( !$m ) return MEDIATYPE_UNKNOWN; + + $m = explode( ' ', $m ); + } else { + # Normalize mime type + if ( isset( $this->mMimeTypeAliases[$extMime] ) ) { + $extMime = $this->mMimeTypeAliases[$extMime]; } - $m= array($extMime); + $m = array($extMime); } - foreach ($m as $mime) { - foreach ($this->mMediaTypes as $type => $codes) { - if (in_array($mime,$codes,true)) return $type; + foreach ( $m as $mime ) { + foreach ( $this->mMediaTypes as $type => $codes ) { + if ( in_array($mime, $codes, true ) ) { + return $type; + } } } @@ -715,4 +763,4 @@ class MimeMagic { } } -?> + -- cgit v1.2.2