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Merge pull request #27 from tractorcow/pulls/pdfpaths

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API Whitelist bin paths for pdftotext
This commit is contained in:
Hamish Friedlander 2016-02-25 16:45:56 +13:00
commit bde4cf4536
2 changed files with 45 additions and 16 deletions
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52
code/extractors/PDFTextExtractor.php
View File

@ -7,10 +7,29 @@
*/
class PDFTextExtractor extends FileTextExtractor
{
/**
* Set to bin path this extractor can execute
*
* @var string
*/
private static $binary_location = null;
/**
* Used if binary_location isn't set.
* List of locations to search for a given binary in
*
* @config
* @var array
*/
private static $search_binary_locations = array(
'/usr/bin',
'/usr/local/bin',
);
public function isAvailable()
{
$bin = $this->bin('pdftotext');
return (file_exists($bin) && is_executable($bin));
return $bin && file_exists($bin) && is_executable($bin);
}
public function supportsExtension($extension)
@ -34,24 +53,28 @@ class PDFTextExtractor extends FileTextExtractor
/**
* Accessor to get the location of the binary
*
* @param string $prog Name of binary
* @param string $program Name of binary
* @return string
*/
protected function bin($prog = '')
protected function bin($program = '')
{
if ($this->config()->binary_location) {
// By config
$path = $this->config()->binary_location;
} elseif (file_exists('/usr/bin/pdftotext')) {
// By searching common directories
$path = '/usr/bin';
} elseif (file_exists('/usr/local/bin/pdftotext')) {
$path = '/usr/local/bin';
// Get list of allowed search paths
if ($location = $this->config()->binary_location) {
$locations = array($location);
} else {
$path = '.'; // Hope it's in path
$locations = $this->config()->search_binary_locations;
}
return ($path ? $path . '/' : '') . $prog;
// Find program in each path
foreach($locations as $location) {
$path = "{$location}/{$program}";
if(file_exists($path)) {
return $path;
}
}
// Not found
return null;
}
public function getContent($path)
@ -72,6 +95,9 @@ class PDFTextExtractor extends FileTextExtractor
*/
protected function getRawOutput($path)
{
if(!$this->isAvailable()) {
throw new FileTextExtractor_Exception("getRawOutput called on unavailable extractor");
}
exec(sprintf('%s %s - 2>&1', $this->bin('pdftotext'), escapeshellarg($path)), $content, $err);
if ($err) {
throw new FileTextExtractor_Exception(sprintf(

5
tests/PDFTextExtractorTest.php
View File

@ -5,7 +5,10 @@ class PDFTextExtractorTest extends SapphireTest
{
$extractor = new PDFTextExtractor();
if (!$extractor->isAvailable()) {
$this->markTestSkipped('pdftotext not available');
$this->setExpectedException(
'FileTextExtractor_Exception',
'getRawOutput called on unavailable extractor'
);
}
$content = $extractor->getContent(Director::baseFolder() . '/textextraction/tests/fixtures/test1.pdf');