Simple cURL setup with cURL internal session cookie handling

curl-session-cookies.php

<?php

$url = new AnrDaemon\Net\Url("https://www.example.org/login/page");

// Ask for authentication password, fill the form
fwrite(STDERR, 'Enter password: ');
$form = [
  "login" => 'admin',
  "pass" => trim(fgets(STDIN)),
];

// Create cURL instance
$curl = curl_init($url);
curl_setopt_array($curl, [
  CURLOPT_COOKIEFILE => '',
  CURLOPT_COOKIESESSION => true,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_CONNECTTIMEOUT_MS => 500,
  //CURLOPT_URL => '',
  //CURLOPT_HTTPGET => true,
  CURLOPT_POSTFIELDS => $form,
]);

// Login to the website
curl_exec($curl);
$result = curl_getinfo($curl, CURLINFO_RESPONSE_CODE);
if($result != 303 && $result != 202)
  die("Unauthorized.");

// Prepare two template URL instances: $url to post data and $req to search
$url = $url->parse("/api/endpoint");
$req = $url->setParts(['query' => ['action' => 'search'] + $url->query]);
$i = 0;
foreach($list as $item)
{
  $i++;

  try
  { // Search for existing item...
    curl_setopt_array($curl, [
      CURLOPT_URL => $req->setParts(['query' => ['series' => $item['series']] + $req->query]),
      CURLOPT_HTTPGET => true,
      //CURLOPT_POSTFIELDS => [],
    ]);
    $result = curl_exec($curl);
    if(curl_getinfo($curl, CURLINFO_RESPONSE_CODE) != 200)
      throw new \ErrorException("Search failed");

    // Decode search results
    $set = json_decode($result, true);
    if(json_last_error() !== JSON_ERROR_NONE)
      throw new \ErrorException(json_last_error_msg(), json_last_error());
    if(count($set) > 1)
      throw new \ErrorException("Ambiguous results");

    if(empty($set))
    { // No existing items - prepare to insert new one
      print "Not found {$item['series']}.\n";
      $url = $url->setParts(['query' => ['id' => 0] + $url->query]);
    }
    else
    { // Found existing items - prepare to replace
      $old = reset($set);
      print "Found {$old['series']} (" . strlen($old['content']) . ").\n";
      $url = $url->setParts(['query' => ['id' => $old['id']] + $url->query]);
    }
  }
  catch(\ErrorException $e)
  { // Log errors and continue.
    error_log($e);
    print "Error searching for {$item['series']} ({$e->getMessage()}).\n";
    continue;
  }

// --- POST item ---

  try
  {
    $form = [
      "action" => "save",
      "series" => $item['series'],
      "name" => $item['name'],
      "content" => $template->fetch('item.tpl', $item),
    ];

    curl_setopt_array($curl, [
      CURLOPT_URL => $url,
      //CURLOPT_HTTPGET => true,
      CURLOPT_POSTFIELDS => $form,
    ]);
    curl_exec($curl);
    $result = curl_getinfo($curl, CURLINFO_RESPONSE_CODE);
    if($result != 303 && $result != 202)
      throw new \ErrorException("Send failed");

    print "Sent {$item['series']}.\n";
  }
  catch(\ErrorException $e)
  {
    error_log($e);
    print "Error posting {$item['series']} ({$e->getMessage()}).\n";
  }

  unset($old, $form);
}