Search Files Nothing Found - php

Question

I am trying to search (filter) for files in a Dropbox folder, but no files are being found when there are files that match the filter. I am not using the PHP library provided by Dropbox.
Here is an extract of the code:
class Dropbox {
private $headers = array();
private $authQueryString = "";
public $SubFolders = array();
public $Files = array();
function __construct() {
$this->headers = array('Authorization: OAuth oauth_version="1.0", oauth_signature_method="PLAINTEXT", oauth_consumer_key="'.DROPBOX_APP_KEY.'", oauth_token="'.DROPBOX_OAUTH_ACCESS_TOKEN.'", oauth_signature="'.DROPBOX_APP_SECRET.'&'.DROPBOX_OAUTH_ACCESS_SECRET.'"');
$this->authQueryString = "oauth_consumer_key=".DROPBOX_APP_KEY."&oauth_token=".DROPBOX_OAUTH_ACCESS_TOKEN."&oauth_signature_method=PLAINTEXT&oauth_signature=".DROPBOX_APP_SECRET."%26".DROPBOX_OAUTH_ACCESS_SECRET."&oauth_version=1.0";
}
public function GetFolder($folder, $fileFilter = "") {
//Add the required folder to the end of the base path for folder call
if ($fileFilter == "")
$subPath = "metadata/sandbox";
else
$subPath = "search/sandbox";
if (strlen($folder) > 1) {
$subPath .= (substr($folder, 0, 1) != "/" ? "/" : "")
.$folder;
}
//Set up the post parameters for the call
$params = null;
if ($fileFilter != "") {
$params = array(
"query" => $fileFilter
);
}
//Clear the sub folders and files logged
$this->SubFolders = array();
$this->Files = array();
//Make the call
$content = $this->doCall($subPath, $params);
//Log the files and folders
for ($i = 0; $i < sizeof($content->contents); $i++) {
$f = $content->contents[$i];
if ($f->is_dir == "1") {
array_push($this->SubFolders, $f->path);
} else {
array_push($this->Files, $f->path);
}
}
//Return the content
return $content;
}
private function doCall($urlSubPath, $params = null, $filePathName = null, $useAPIContentPath = false) {
//Create the full URL for the call
$url = "https://api".($useAPIContentPath ? "-content" : "").".dropbox.com/1/".$urlSubPath;
//Initialise the curl call
$ch = curl_init();
//Set up the curl call
curl_setopt($ch, CURLOPT_HTTPHEADER, $this->headers);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
if ($params != null)
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
$fh = null;
if ($filePathName != null) {
$fh = fopen($filePathName, "rb");
curl_setopt($context, CURLOPT_BINARYTRANSFER, true);
curl_setopt($context, CURLOPT_INFILE, $fh);
curl_setopt($context, CURLOPT_INFILESIZE, filesize($filePathName));
}
//Excecute and get the response
$api_response = curl_exec($ch);
if ($fh != null)
fclose($fh);
//Process the response into an array
$json_response = json_decode($api_response);
//Has there been an error
if (isset($json_response->error )) {
throw new Exception($json_response["error"]);
}
//Send the response back
return $json_response;
}
}
I then call the GetFolder method of Dropbox as such:
$dbx = new Dropbox();
$filter = "MyFilter";
$dbx->GetFolder("MyFolder", $filter);
print "Num files: ".sizeof($dbx->Files);
As I am passing $filter into GetFolder, it uses the search/sandbox path and creates a parameter array ($params) with the required query parameter in it.
The process works fine if I don't provide the $fileFilter parameter to GetFolder and all files in the folder are returned (uses the metadata/sandbox path).
Other methods (that are not in the extract for brevity) of the Dropbox class use the $params feature and they to work fine.
I have been using the Dropbpox API reference for guidance (https://www.dropbox.com/developers/core/docs#search)

Answer 1

At first glance, it looks like you're making a GET request to /search but passing parameters via CURLOPT_POSTFIELDS. Try using a POST or encoding the search query as a query string parameter.
EDIT
Below is some code that works for me (usage: php search.php <term>). Note that I'm using OAuth 2 instead of OAuth 1, so my Authorization header looks different from yours.
<?php
$access_token = '<REDACTED>';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.dropbox.com/1/search/auto');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization:Bearer ' . $access_token));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array('query' => $argv[1]));
$api_response = curl_exec($ch);
echo "Matching files:\n\t" . join("\n\t",
array_map(function ($file) {
return $file['path'];
}, json_decode($api_response, true)))."\n";
?>