added Shorturl_api to add support for ur1, 2tu and other services lacking a native api - trac31

darcs-hash:20081107193831-099f7-e340280ba9d2abb4dca05733bc04bb5a5069b62b.gz

1 files changed, 116 insertions, 0 deletions

diff --git a/lib/Shorturl_api.php b/lib/Shorturl_api.php
new file mode 100644
index 000000000..d08ab6a73
--- /dev/null
+++ b/lib/Shorturl_api.php
@@ -0,0 +1,116 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+class ShortUrlApi {
+    protected $service_url;
+
+    function __construct($service_url) {
+        $this->service_url = $service_url;
+    }
+
+    function shorten($url) {
+        if ($this->is_long($url)) return $this->shorten_imp($url);
+        return $url;
+    }
+
+    protected function shorten_imp($url) {
+        return "To Override";
+    }
+
+    private function is_long($url) {
+        return strlen($url) > 20;
+    }
+
+    protected function http_post($data) {
+        $ch = curl_init();
+        curl_setopt($ch, CURLOPT_URL, $this->service_url);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($ch, CURLOPT_POST, 1);
+        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+        $response = curl_exec($ch);
+        $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
+        if (($code < 200) || ($code >= 400)) return false;
+        return $response;
+    }
+
+    protected function http_get($url) {
+        $encoded_url = urlencode($url);
+        return file_get_contents("{$this->service_url}$encoded_url");
+    }
+
+    protected function tidy($response) {
+        $response = str_replace('&nbsp;', ' ', $response);
+        $config = array('output-xhtml' => true);
+        $tidy = new tidy;
+        $tidy->parseString($response, $config, 'utf8');
+        $tidy->cleanRepair();
+        return (string)$tidy;
+    }
+}
+
+class LilUrl extends ShortUrlApi {
+    function __construct() {
+        parent::__construct('http://ur1.ca/');
+    }
+
+    protected function shorten_imp($url) {
+        $data['longurl'] = $url;
+        $response = $this->http_post($data);
+        if (!$response) return $url;
+        $x = simplexml_load_string($response)->body->p[0]->a->attributes();
+        if (isset($x['href'])) return $x['href'];
+        return $url;
+    }
+}
+
+
+class PtitUrl extends ShortUrlApi {
+    function __construct() {
+        parent::__construct('http://ptiturl.com/?creer=oui&action=Reduire&url=');
+    }
+
+    protected function shorten_imp($url) {
+        $response = $this->http_get($url);
+        if (!$response) return $url;
+        $response = $this->tidy($response);
+        $xml = simplexml_load_string($response)->body->center->table->tr->td->pre->a->attributes();
+        if (isset($xml['href'])) return $xml['href'];
+        return $url;
+    }
+}
+
+class TightUrl extends ShortUrlApi {
+    function __construct() {
+        parent::__construct('http://2tu.us/?save=y&url=');
+    }
+
+    protected function shorten_imp($url) {
+        $response = $this->http_get($url);
+        if (!$response) return $url;
+        $response = $this->tidy($response);
+        $xml = simplexml_load_string($response)->body->p[0]->code[0]->a->attributes();
+        if (isset($xml['href'])) return $xml['href'];
+        return $url;
+    }
+}
+
+