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upload-file.php
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upload-file.php
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<?php include_once (__ROOT__.'/classes/FileUploadExceptionHandler.php');?>
<?php include_once (__ROOT__.'/includes/back-button.inc');?>
<?php include_once (__ROOT__.'/includes/hints/hints-menu-wrapper.inc'); ?>
<?php
try{
switch ($_SESSION["security-level"]){
case "0": // This code is insecure. No input validation is performed.
$lEnableJavaScriptValidation = FALSE;
$lEnableHTMLControls = FALSE;
$lValidateFileUpload = FALSE;
$lAllowedFileSize = 2000000;
$lUploadDirectoryFlag = "CLIENT_DECIDES";
break;
case "1": // This code is insecure. No input validation is performed.
$lEnableJavaScriptValidation = TRUE;
$lEnableHTMLControls = TRUE;
$lValidateFileUpload = FALSE;
$lAllowedFileSize = 2000000;
$lUploadDirectoryFlag = "CLIENT_DECIDES";
break;
case "2":
case "3":
case "4":
case "5": // This code is fairly secure
$lEnableJavaScriptValidation = TRUE;
$lEnableHTMLControls = TRUE;
$lValidateFileUpload = TRUE;
$lAllowedFileSize = 20000;
$lUploadDirectoryFlag = "TEMP_DIRECTORY";
break;
}// end switch
//$lWebServerUploadDirectory = __ROOT__.DIRECTORY_SEPARATOR.'uploads';
$lWebServerUploadDirectory = sys_get_temp_dir();
$lFormSubmitted = $lFileMovedSuccessfully = FALSE;
if (isset($_POST["upload-file-php-submit-button"]) || isset($_REQUEST["upload-file-php-submit-button"])) {
$lFormSubmitted = TRUE;
}// end if
if ($lFormSubmitted){
switch ($lUploadDirectoryFlag){
case "CLIENT_DECIDES": $lTempDirectory = $_REQUEST["UPLOAD_DIRECTORY"];break;
case "WEB_SERVER": $lTempDirectory = $lWebServerUploadDirectory;break;
case "TEMP_DIRECTORY": $lTempDirectory = sys_get_temp_dir();break;
}// end switch
/* Common file properties */
$lFilename = $_FILES["filename"]["name"];
$lFileTempName = $_FILES["filename"]["tmp_name"];
$lFileType = $_FILES["filename"]["type"];
$lFileSize = $_FILES["filename"]["size"];
$lFileUploadErrorCode = $_FILES["filename"]["error"];
$lFilePermanentName = $lTempDirectory . DIRECTORY_SEPARATOR . $lFilename;
/* File properties needed for validation */
$lAllowedFileExtensions = array("gif", "jpeg", "jpg", "png");
$lAllowedFileTypes = array("image/gif", "image/jpeg", "image/jpg", "image/pjpeg", "image/x-png", "image/png");
$lFilenameParts = explode(".", $lFilename);
$lFileExtension = end($lFilenameParts);
$lValidationMessage = "Validation not performed";
$lFileMovedMessage = "Moving file was not attempted";
/* File property strings suitible for printing */
if ($lFileSize > 1000){
$lFileSizeString = number_format($lFileSize/1000). " KB";
}else{
$lFileSizeString = number_format($lFileSize). " Bytes";
}//end if
if ($lAllowedFileSize > 1000){
$lAllowedFileSizeString = number_format($lAllowedFileSize/1000). " KB";
}else{
$lAllowedFileSizeString = number_format($lAllowedFileSize). " Bytes";
}//end if
$lFileUploadMessage = "File uploaded to {$lFileTempName}";
if ($lFileUploadErrorCode != UPLOAD_ERR_OK) {
$lFileUploadMessage = "Error detected during file upload (Code {$lFileUploadErrorCode}). See error output for detail.";
throw new FileUploadExceptionHandler($lFileUploadErrorCode);
}//end if UPLOAD_ERR_OK
$lFileValid = TRUE;
if ($lValidateFileUpload){
$lValidationMessage = "Validation performed.";
if (!in_array($lFileExtension, $lAllowedFileExtensions)) {
$lValidationMessage .= " File extension {$lFileExtension} not allowed.";
$lFileValid = FALSE;
}// end if
if (!in_array($lFileType, $lAllowedFileTypes)) {
$lValidationMessage .= " File type {$lFileType} not allowed.";
$lFileValid = FALSE;
}// end if
if ($lFileSize > $lAllowedFileSize){
$lValidationMessage .= "File size {$lFileSizeString} exceeds allowed file size {$lAllowedFileSizeString}.";
$lFileValid = FALSE;
}// end if
}// end if $lValidateFileUpload
if ($lFileValid){
if (move_uploaded_file($lFileTempName, $lFilePermanentName)) {
$lFileMovedSuccessfully = TRUE;
$lFileMovedMessage = "File moved to {$lFilePermanentName}";
}else{
$lFileMovedSuccessfully = FALSE;
$lFileMovedMessage = "Error Detected. Unable to move PHP temp file {$lTempDirectory} to permanent location {$lFilePermanentName}";
throw new Exception($lFileMovedMessage);
}//end if move_uploaded_file
}// end if $lFileValid
}//end if $lFormSubmitted
}catch(Exception $e){
echo $CustomErrorHandler->FormatError($e, "Error uploading file");
}// end try
?>
<!-- Bubble hints code -->
<?php
try{
$lHTMLandXSSandSQLInjectionPointBalloonTip = $BubbleHintHandler->getHint("HTMLandXSSandSQLInjectionPoint");
} catch (Exception $e) {
echo $CustomErrorHandler->FormatError($e, "Error attempting to execute query to fetch bubble hints.");
}// end try
?>
<script type="text/javascript">
$(function() {
$('[HTMLandXSSandSQLInjectionPoint]').attr("title", "<?php echo $lHTMLandXSSandSQLInjectionPointBalloonTip; ?>");
$('[HTMLandXSSandSQLInjectionPoint]').balloon();
});
</script>
<script type="text/javascript">
var onSubmitOfForm = function(/* HTMLForm */ theForm){
try{
<?php
if($lEnableJavaScriptValidation){
echo "var lValidateInput = \"TRUE\"" . PHP_EOL;
}else{
echo "var lValidateInput = \"FALSE\"" . PHP_EOL;
}// end if
?>
var lMAX_FILE_SIZE = <?php echo $lAllowedFileSize;?>;
if(lValidateInput == "TRUE"){
if (theForm.id_max_file_size.value > lMAX_FILE_SIZE){
alert('Maximum file size is not allowed to be larger than '+lMAX_FILE_SIZE);
return false;
};// end if
};// end if(lValidateInput)
return true;
}catch(e){
alert("Error: " + e.message);
};// end catch
};// end JavaScript function onSubmitOfForm()
</script>
<div class="page-title">Upload a File</div>
<div> </div>
<?php
if ($lFormSubmitted) {
echo "<div>
<table style='width: 600px;'>
<tr><td class='label' colspan='2'>{$lFileUploadMessage}</td></tr>
<tr><td class='label' colspan='2'>{$lFileMovedMessage}</td></tr>
<tr><td class='label' colspan='2'>{$lValidationMessage}</td></tr>
<tr><td> </td></tr>
<tr><td class='label'>Original File Name</td><td>{$lFilename}</td></tr>
<tr><td class='label'>Temporary File Name</td><td>{$lFileTempName}</td></tr>
<tr><td class='label'>Permanent File Name</td><td>{$lFilePermanentName}</td></tr>
<tr><td class='label'>File Type</td><td>{$lFileType}</td></tr>
<tr><td class='label'>File Size</td><td>{$lFileSizeString}</td></tr>
</table>
</div>
<div> </div>";
}//end if
?>
<div>
<form enctype="multipart/form-data" action="./index.php?page=upload-file.php" method="POST" onsubmit="return onSubmitOfForm(this);">
<table style="margin-left:auto; margin-right:auto;">
<tr id="id-bad-cred-tr" style="display: none;">
<td colspan="2" class="error-message">
Authentication Error: File upload error
</td>
</tr>
<tr><td></td></tr>
<tr>
<td colspan="2" class="form-header">Please choose file to upload</td>
</tr>
<tr><td></td></tr>
<tr>
<td colspan="2">
<!-- UPLOAD_DIRECTORY hidden input is only considered in security level 0 -->
<input type="hidden" name="UPLOAD_DIRECTORY" value="<?php echo $lWebServerUploadDirectory; ?>" />
<!-- MAX_FILE_SIZE must precede the file input field -->
<input type="hidden" name="MAX_FILE_SIZE" id="id_max_file_size" value="<?php echo $lAllowedFileSize; ?>" />
<label for="filename-text" class="label">Filename</label>
<input type="text" HTMLandXSSandSQLInjectionPoint="1" style="background-color:#ffffff;color:#000000;font-family:courier" disabled="disabled" name="filename-text" id="idFilenameText" size="50" />
<img src="./images/upload-32-32.png" align="middle" onclick="idFilename.click();" />
<input type="file" id="idFilename" name="filename" style="display: none;" onchange="idFilenameText.value=this.value" />
</td>
</tr>
<tr><td></td></tr>
<tr>
<td colspan="2" style="text-align:center;">
<input name="upload-file-php-submit-button" class="button" type="submit" value="Upload File" />
</td>
</tr>
<tr><td></td></tr>
</table>
</form>
</div>