flickrCall.php

<?php

include_once('common.php');

function flickrCall($params, $uri = "rest")
{

        $f      = file(dirname(__FILE__).'/flickrsecret.php');
        $secret = trim($f[1]);
        $params['oauth_consumer_key']     = '3b72b2a6e62cc3a06de7eef62646d81c';
        $params['oauth_nonce']            = rand(0, 99999999);
        $params['oauth_timestamp']        = date('U');
        $params['oauth_signature_method'] = 'HMAC-SHA1';
        $params['oauth_version']          = '1.0';
        $params['format']      = 'php_serial';
        if (array_key_exists(FLICKR_TOKEN, $_COOKIE) && ($_COOKIE[FLICKR_TOKEN] != ''))
          $params['oauth_token'] = $_COOKIE[FLICKR_TOKEN];

        $encoded_params = array();
        foreach ($params as $k => $v)
        {
                $encoded_params[] = urlencode($k).'='.urlencode($v); // "$k=$v"; //  
        }

        sort($encoded_params);
        $p = implode('&', $encoded_params);

        $url = "https://api.flickr.com/services/$uri";

        $base = "GET&".urlencode($url)."&".urlencode($p);

        if (array_key_exists(FLICKR_SECRET, $_COOKIE))
          $tokensecret = $_COOKIE[FLICKR_SECRET];
        else
          $tokensecret = "";

        $sig = urlencode(base64_encode(hash_hmac('sha1', $base, "$secret&$tokensecret", true)));

        $url .= "?$p&oauth_signature=$sig";

        $rsp = gzipCall($url);
  
        return $rsp;

}

function testFlickr()
{
  if (cookiesSet(array(FLICKR_TOKEN, FLICKR_SECRET)))
  {
    $rsp = flickrCall(Array('method' => 'flickr.test.login'));
    $p = unserialize($rsp);
    if (is_array($p) && array_key_exists('stat', $p) && ($p['stat'] == 'ok'))
      return str_replace("@", "_", $p['user']['id']);
  }
  return false; 
}

function flickrAuthLink($class)
{
  return "<a class=\"$class\" href=\"getFlickr.php\">Authorise Flickr</a>";
}

function flickrCallWithRetry($params)
{
  $tries = 0;
  while($tries < 3)
  {
    $rsp = flickrCall($params);
    $fc = unserialize($rsp);

    if ($fc['stat'] == 'ok')
      return $fc;

    $tries++;
  }

  if (is_array($fc) && array_key_exists('message', $fc)) {
    $msg = $fc['message'];
  } else {
    $msg = $rsp;
  }
  errorExit('Flickr call failed with: '.$msg);
}

function pagePhotos($total, $params, $statFile)
{
  $params['page'] = 1;
  $allPhotos = array();
  do {
    $params['per_page'] = $total - count($allPhotos);
    $fc = flickrCallWithRetry($params);
    $allPhotos = array_merge($allPhotos, $fc['photos']['photo']);
    writeProgress("Getting photos from Flickr.", (100 * count($allPhotos) / $total), $statFile);
    $params['page'] += 1;
  } while((count($allPhotos) < $total) && ($params['page'] <= $fc['photos']['pages']));
  return $allPhotos;
}

function getPhotos($data, $statFile = '')
{
    if ($data['criteriaChoice'] == '#flickrSet')
    {
          return getSet($data['set'], $statFile);
    }
    else
    {
          return getPhotosSearch($data['count'], $data['max-date'], $data['min-date'], $data['tags'], $statFile);
    }
}

function getPhotosSearch($count, $maxDate, $minDate, $tags, $statFile)
{
  $count = $count ?: DEF_COUNT;
  writeProgress("Getting photos from Flickr.", 0, $statFile);

  if ($maxDate > "")
    $maxDate = date('Y-m-d', strtotime($maxDate) + 24 * 60 * 60); // add a day to make it inclusive, change back to MySQL datestamp as getWithoutGeoData doesn't like Unix time stamps
  $params = array(
    'method'          => 'flickr.photos.getWithoutGeoData',
    'sort'            => 'date-taken-desc',
    'extras'          => 'date_taken,geo',
    'max_taken_date'  => $maxDate,
    'min_taken_date'  => $minDate
  );

  if ($tags > "")
  {
    $params['method']       = 'flickr.photos.search';
    $params['user_id']      = 'me';
    $params['has_geo']      =  0;
    $params['tags']         = $tags;
    $params['content_type'] = 7;
  }

  $photos = pagePhotos($count, $params, $statFile);
  addUTime($photos);
  return $photos;
}

function addUTime(&$photos)
{
  // bail if we've got no photos
  if (count($photos) == 0)
  {
    errorExit('No Flickr photos found.');
  }

  // do expensive str date processing just once
  foreach($photos as &$p)
  {
    $p[UTIME] = strtotime($p['datetaken']);
  }

  // sort photos by date taken in case flickr has fucked up or the user has overridden sort
  sort_array_by_utime($photos);

  return $photos;

}

function flickrAddTags($photoId, $tags)
{
  return flickrCall(array(
        'method' => 'flickr.photos.addTags',
        'photo_id' => $photoId,
        'tags' => $tags));
}

function flickrSetGeo($photoId, $lat, $long)
{
  return flickrCall(array(
        'method' => 'flickr.photos.geo.setLocation',
        'photo_id' => $photoId,
        'lat' => $lat,
        'lon' => $long));
}

function getSet($setId)
{
  $params = array(
      'method'      => 'flickr.photosets.getPhotos',
      'extras'      => 'date_taken,geo',
      'photoset_id' => $setId
    );
  $fc = flickrCallWithRetry($params);
  $photos = $fc['photoset']['photo'];
  addUTime($photos);
  return $photos;
}

?>