ILIAS  release_5-0 Revision 5.0.0-1144-gc4397b1f87
getid3_szip Class Reference

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g // More...

+ Collaboration diagram for getid3_szip:

Public Member Functions

 getid3_szip (&$fd, &$ThisFileInfo)
 

Detailed Description

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //

Definition at line 17 of file module.archive.szip.php.

Member Function Documentation

◆ getid3_szip()

getid3_szip::getid3_szip ( $fd,
$ThisFileInfo 
)

Definition at line 20 of file module.archive.szip.php.

References getid3_lib\BigEndian2Int().

20  {
21 
22  fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
23  $SZIPHeader = fread($fd, 6);
24  if (substr($SZIPHeader, 0, 4) != 'SZ'."\x0A\x04") {
25  $ThisFileInfo['error'][] = 'Expecting "SZ[x0A][x04]" at offset '.$ThisFileInfo['avdataoffset'].', found "'.substr($SZIPHeader, 0, 4).'"';
26  return false;
27  }
28 
29  $ThisFileInfo['fileformat'] = 'szip';
30 
31  $ThisFileInfo['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 4, 1));
32  $ThisFileInfo['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 5, 1));
33 
34  while (!feof($fd)) {
35  $NextBlockID = fread($fd, 2);
36  switch ($NextBlockID) {
37  case 'SZ':
38  // Note that szip files can be concatenated, this has the same effect as
39  // concatenating the files. this also means that global header blocks
40  // might be present between directory/data blocks.
41  fseek($fd, 4, SEEK_CUR);
42  break;
43 
44  case 'BH':
45  $BHheaderbytes = getid3_lib::BigEndian2Int(fread($fd, 3));
46  $BHheaderdata = fread($fd, $BHheaderbytes);
47  $BHheaderoffset = 0;
48  while (strpos($BHheaderdata, "\x00", $BHheaderoffset) > 0) {
49  //filename as \0 terminated string (empty string indicates end)
50  //owner as \0 terminated string (empty is same as last file)
51  //group as \0 terminated string (empty is same as last file)
52  //3 byte filelength in this block
53  //2 byte access flags
54  //4 byte creation time (like in unix)
55  //4 byte modification time (like in unix)
56  //4 byte access time (like in unix)
57 
58  $BHdataArray['filename'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
59  $BHheaderoffset += (strlen($BHdataArray['filename']) + 1);
60 
61  $BHdataArray['owner'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
62  $BHheaderoffset += (strlen($BHdataArray['owner']) + 1);
63 
64  $BHdataArray['group'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
65  $BHheaderoffset += (strlen($BHdataArray['group']) + 1);
66 
67  $BHdataArray['filelength'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 3));
68  $BHheaderoffset += 3;
69 
70  $BHdataArray['access_flags'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 2));
71  $BHheaderoffset += 2;
72 
73  $BHdataArray['creation_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
74  $BHheaderoffset += 4;
75 
76  $BHdataArray['modification_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
77  $BHheaderoffset += 4;
78 
79  $BHdataArray['access_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
80  $BHheaderoffset += 4;
81 
82  $ThisFileInfo['szip']['BH'][] = $BHdataArray;
83  }
84  break;
85 
86  default:
87  break 2;
88  }
89  }
90 
91  return true;
92 
93  }
BigEndian2Int($byteword, $synchsafe=false, $signed=false)
Definition: getid3.lib.php:234
+ Here is the call graph for this function:

The documentation for this class was generated from the following file: