function read_exif_data_raw($path, $verbose)
{
if ($path == '' || $path == 'none') {
return;
}
$in = @fopen($path, 'rb');
// the b is for windows machines to open in binary mode
$seek = @fopen($path, 'rb');
// There may be an elegant way to do this with one file handle.
$globalOffset = 0;
if (!isset($verbose)) {
$verbose = 0;
}
$result['VerboseOutput'] = $verbose;
$result['Errors'] = 0;
if (!$in || !$seek) {
// if the path was invalid, this error will catch it
$result['Errors'] = 1;
$result['Error'][$result['Errors']] = gettext('The file could not be found.');
return $result;
}
$GLOBALS['exiferFileSize'] = filesize($path);
// First 2 bytes of JPEG are 0xFFD8
$data = bin2hex(fread($in, 2));
if ($data == 'ffd8') {
$result['ValidJpeg'] = 1;
} else {
$result['ValidJpeg'] = 0;
fseek($in, 0);
}
$result['ValidIPTCData'] = 0;
$result['ValidJFIFData'] = 0;
$result['ValidEXIFData'] = 0;
$result['ValidAPP2Data'] = 0;
$result['ValidCOMData'] = 0;
if ($result['ValidJpeg'] == 1) {
// Next 2 bytes are MARKER tag (0xFFE#)
$data = bin2hex(fread($in, 2));
$size = bin2hex(fread($in, 2));
// LOOP THROUGH MARKERS TILL YOU GET TO FFE1 (exif marker)
$abortCount = 0;
while (!feof($in) && $data != 'ffe1' && $data != 'ffc0' && $data != 'ffd9' && ++$abortCount < 200) {
if ($data == 'ffe0') {
// JFIF Marker
$result['ValidJFIFData'] = 1;
$result['JFIF']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['JFIF']['Data'] = $data;
}
$result['JFIF']['Identifier'] = substr($data, 0, 5);
$result['JFIF']['ExtensionCode'] = bin2hex(substr($data, 6, 1));
$globalOffset += hexdec($size) + 2;
} else {
if ($data == 'ffed') {
// IPTC Marker
$result['ValidIPTCData'] = 1;
$result['IPTC']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['IPTC']['Data'] = $data;
}
$globalOffset += hexdec($size) + 2;
} else {
if ($data == 'ffe2') {
// EXIF extension Marker
$result['ValidAPP2Data'] = 1;
$result['APP2']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['APP2']['Data'] = $data;
}
$globalOffset += hexdec($size) + 2;
} else {
if ($data == 'fffe') {
// COM extension Marker
$result['ValidCOMData'] = 1;
$result['COM']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['COM']['Data'] = $data;
}
$globalOffset += hexdec($size) + 2;
} else {
if ($data == 'ffe1') {
$result['ValidEXIFData'] = 1;
}
}
}
}
}
$data = bin2hex(fread($in, 2));
$size = bin2hex(fread($in, 2));
}
// END MARKER LOOP
if ($data == 'ffe1') {
$result['ValidEXIFData'] = 1;
} else {
fclose($in);
fclose($seek);
return $result;
}
// Size of APP1
$result['APP1Size'] = hexdec($size);
// Start of APP1 block starts with 'Exif' header (6 bytes)
$header = fread($in, 6);
}
// END IF ValidJpeg
// Then theres a TIFF header with 2 bytes of endieness (II or MM)
$header = fread($in, 2);
if ($header === 'II') {
$intel = 1;
$result['Endien'] = 'Intel';
} else {
if ($header === 'MM') {
$intel = 0;
$result['Endien'] = 'Motorola';
} else {
$intel = 1;
// not sure what the default should be, but this seems reasonable
$result['Endien'] = 'Unknown';
}
}
// 2 bytes of 0x002a
$tag = bin2hex(fread($in, 2));
// Then 4 bytes of offset to IFD0 (usually 8 which includes all 8 bytes of TIFF header)
$offset = bin2hex(fread($in, 4));
if ($intel == 1) {
$offset = intel2Moto($offset);
}
// Check for extremely large values here
if (hexdec($offset) > 100000) {
$result['ValidEXIFData'] = 0;
fclose($in);
fclose($seek);
return $result;
}
if (hexdec($offset) > 8) {
$unknown = fread($in, hexdec($offset) - 8);
}
// fixed this bug in 1.3
// add 12 to the offset to account for TIFF header
if ($result['ValidJpeg'] == 1) {
$globalOffset += 12;
}
//===========================================================
// Start of IFD0
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['IFD0NumTags'] = $num;
if ($num < 1000) {
// 1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, 'IFD0', $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = 'Illegal size for IFD0';
}
// store offset to IFD1
$offset = bin2hex(fread($in, 4));
if ($intel == 1) {
$offset = intel2Moto($offset);
}
$result['IFD1Offset'] = hexdec($offset);
// Check for SubIFD
if (!isset($result['IFD0']['ExifOffset']) || $result['IFD0']['ExifOffset'] == 0) {
fclose($in);
fclose($seek);
return $result;
}
// seek to SubIFD (Value of ExifOffset tag) above.
$ExitOffset = $result['IFD0']['ExifOffset'];
$v = fseek($in, $globalOffset + $ExitOffset);
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = gettext('Could not Find SubIFD');
}
//===========================================================
// Start of SubIFD
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['SubIFDNumTags'] = $num;
if ($num < 1000) {
// 1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, 'SubIFD', $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = gettext('Illegal size for SubIFD');
}
// Add the 35mm equivalent focal length:
if (isset($result['IFD0']['FocalLengthIn35mmFilm']) && !isset($result['SubIFD']['FocalLengthIn35mmFilm'])) {
// found in the wrong place
$result['SubIFD']['FocalLengthIn35mmFilm'] = $result['IFD0']['FocalLengthIn35mmFilm'];
}
if (!isset($result['SubIFD']['FocalLengthIn35mmFilm'])) {
$result['SubIFD']['FocalLengthIn35mmFilm'] = get35mmEquivFocalLength($result);
}
// Check for IFD1
if (!isset($result['IFD1Offset']) || $result['IFD1Offset'] == 0) {
fclose($in);
fclose($seek);
return $result;
}
// seek to IFD1
$v = fseek($in, $globalOffset + $result['IFD1Offset']);
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = gettext('Could not Find IFD1');
}
//===========================================================
// Start of IFD1
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['IFD1NumTags'] = $num;
if ($num < 1000) {
// 1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, 'IFD1', $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = gettext('Illegal size for IFD1');
}
// If verbose output is on, include the thumbnail raw data...
if ($result['VerboseOutput'] == 1 && $result['IFD1']['JpegIFOffset'] > 0 && $result['IFD1']['JpegIFByteCount'] > 0) {
$v = fseek($seek, $globalOffset + $result['IFD1']['JpegIFOffset']);
if ($v == 0) {
$data = fread($seek, $result['IFD1']['JpegIFByteCount']);
} else {
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
}
}
$result['IFD1']['ThumbnailData'] = $data;
}
// Check for Interoperability IFD
if (!isset($result['SubIFD']['ExifInteroperabilityOffset']) || $result['SubIFD']['ExifInteroperabilityOffset'] == 0) {
fclose($in);
fclose($seek);
return $result;
}
// Seek to InteroperabilityIFD
$v = fseek($in, $globalOffset + $result['SubIFD']['ExifInteroperabilityOffset']);
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = gettext('Could not Find InteroperabilityIFD');
}
//===========================================================
// Start of InteroperabilityIFD
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['InteroperabilityIFDNumTags'] = $num;
if ($num < 1000) {
// 1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, 'InteroperabilityIFD', $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = gettext('Illegal size for InteroperabilityIFD');
}
fclose($in);
fclose($seek);
return $result;
}
function read_exif_data_raw($path, $verbose)
{
if ($path == '' || $path == 'none') {
return;
}
$in = @fopen($path, "rb");
//the b is for windows machines to open in binary mode
$seek = @fopen($path, "rb");
//There may be an elegant way to do this with one file handle.
$globalOffset = 0;
if (!isset($verbose)) {
$verbose = 0;
}
$result['VerboseOutput'] = $verbose;
$result['Errors'] = 0;
if (!$in || !$seek) {
//if the path was invalid, this error will catch it
$result['Errors'] = 1;
$result['Error'][$result['Errors']] = "The file could not be found.";
return $result;
}
//First 2 bytes of JPEG are 0xFFD8
$data = bin2hex(fread($in, 2));
if ($data == "ffd8") {
$result['ValidJpeg'] = 1;
} else {
$result['ValidJpeg'] = 0;
fclose($in);
fclose($seek);
return $result;
}
$result['ValidIPTCData'] = 0;
$result['ValidJFIFData'] = 0;
$result['ValidEXIFData'] = 0;
$result['ValidAPP2Data'] = 0;
$result['ValidCOMData'] = 0;
//Next 2 bytes are MARKER tag (0xFFE#)
$data = bin2hex(fread($in, 2));
$size = bin2hex(fread($in, 2));
//LOOP THROUGH MARKERS TILL YOU GET TO FFE1 (exif marker)
while (!feof($in) && $data != "ffe1" && $data != "ffc0" && $data != "ffd9") {
if ($data == "ffe0") {
//JFIF Marker
$result['ValidJFIFData'] = 1;
$result['JFIF']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['JFIF']['Data'] = $data;
}
$result['JFIF']['Identifier'] = substr($data, 0, 5);
$result['JFIF']['ExtensionCode'] = bin2hex(substr($data, 6, 1));
$globalOffset += hexdec($size) + 2;
} else {
if ($data == "ffed") {
//IPTC Marker
$result['ValidIPTCData'] = 1;
$result['IPTC']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['IPTC']['Data'] = $data;
}
$globalOffset += hexdec($size) + 2;
} else {
if ($data == "ffe2") {
//EXIF extension Marker
$result['ValidAPP2Data'] = 1;
$result['APP2']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['APP2']['Data'] = $data;
}
$globalOffset += hexdec($size) + 2;
} else {
if ($data == "fffe") {
//COM extension Marker
$result['ValidCOMData'] = 1;
$result['COM']['Size'] = hexdec($size);
if (hexdec($size) - 2 > 0) {
$data = fread($in, hexdec($size) - 2);
$result['COM']['Data'] = $data;
}
$globalOffset += hexdec($size) + 2;
} else {
if ($data == "ffe1") {
$result['ValidEXIFData'] = 1;
}
}
}
}
}
$data = bin2hex(fread($in, 2));
$size = bin2hex(fread($in, 2));
}
//END MARKER LOOP
if ($data == "ffe1") {
$result['ValidEXIFData'] = 1;
} else {
fclose($in);
fclose($seek);
return $result;
}
//Size of APP1
$result['APP1Size'] = hexdec($size);
//Start of APP1 block starts with "Exif" header (6 bytes)
$header = fread($in, 6);
//Then theres a TIFF header with 2 bytes of endieness (II or MM)
$header = fread($in, 2);
if ($header === "II") {
$intel = 1;
$result['Endien'] = "Intel";
} else {
if ($header === "MM") {
$intel = 0;
$result['Endien'] = "Motorola";
} else {
$intel = 1;
//not sure what the default should be, but this seems reasonable
$result['Endien'] = "Unknown";
}
}
//2 bytes of 0x002a
$tag = bin2hex(fread($in, 2));
//Then 4 bytes of offset to IFD0 (usually 8 which includes all 8 bytes of TIFF header)
$offset = bin2hex(fread($in, 4));
if ($intel == 1) {
$offset = intel2Moto($offset);
}
// Check for extremely large values here
if (hexdec($offset) > 100000) {
$result['ValidEXIFData'] = 0;
fclose($in);
fclose($seek);
return $result;
}
if (hexdec($offset) > 8) {
$unknown = fread($in, hexdec($offset) - 8);
}
//fixed this bug in 1.3
//add 12 to the offset to account for TIFF header
$globalOffset += 12;
//===========================================================Start of IFD0
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['IFD0NumTags'] = $num;
if ($num < 1000) {
//1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, "IFD0", $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Illegal size for IFD0";
}
//store offset to IFD1
$offset = bin2hex(fread($in, 4));
if ($intel == 1) {
$offset = intel2Moto($offset);
}
$result['IFD1Offset'] = hexdec($offset);
//Check for SubIFD
if (!isset($result['IFD0']['ExifOffset']) || $result['IFD0']['ExifOffset'] == 0) {
fclose($in);
fclose($seek);
return $result;
}
//seek to SubIFD (Value of ExifOffset tag) above.
$ExitOffset = $result['IFD0']['ExifOffset'];
$v = fseek($in, $globalOffset + $ExitOffset);
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Couldnt Find SubIFD";
}
//===========================================================Start of SubIFD
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['SubIFDNumTags'] = $num;
if ($num < 1000) {
//1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, "SubIFD", $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Illegal size for SubIFD";
}
//Check for IFD1
if (!isset($result['IFD1Offset']) || $result['IFD1Offset'] == 0) {
fclose($in);
fclose($seek);
return $result;
}
//seek to IFD1
$v = fseek($in, $globalOffset + $result['IFD1Offset']);
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Couldnt Find IFD1";
}
//===========================================================Start of IFD1
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['IFD1NumTags'] = $num;
if ($num < 1000) {
//1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, "IFD1", $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Illegal size for IFD1";
}
//if verbose output is on, stick in the thumbnail raw data
if ($result['VerboseOutput'] == 1 && $result['IFD1']['JpegIFOffset'] > 0 && $result['IFD1']['JpegIFByteCount'] > 0) {
$v = fseek($seek, $globalOffset + $result['IFD1']['JpegIFOffset']);
if ($v == 0) {
$data = fread($seek, $result['IFD1']['JpegIFByteCount']);
} else {
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
}
}
$result['IFD1']["ThumbnailData"] = $data;
}
//Check for Interoperability IFD
if (!isset($result['SubIFD']['ExifInteroperabilityOffset']) || $result['SubIFD']['ExifInteroperabilityOffset'] == 0) {
fclose($in);
fclose($seek);
return $result;
}
//seek to InteroperabilityIFD
$v = fseek($in, $globalOffset + $result['SubIFD']['ExifInteroperabilityOffset']);
if ($v == -1) {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Couldnt Find InteroperabilityIFD";
}
//===========================================================Start of InteroperabilityIFD
$num = bin2hex(fread($in, 2));
if ($intel == 1) {
$num = intel2Moto($num);
}
$num = hexdec($num);
$result['InteroperabilityIFDNumTags'] = $num;
if ($num < 1000) {
//1000 entries is too much and is probably an error.
for ($i = 0; $i < $num; $i++) {
read_entry($result, $in, $seek, $intel, "InteroperabilityIFD", $globalOffset);
}
} else {
$result['Errors'] = $result['Errors'] + 1;
$result['Error'][$result['Errors']] = "Illegal size for InteroperabilityIFD";
}
fclose($in);
fclose($seek);
return $result;
}
