first commit

2026-03-21 17:04:18 +08:00
commit 3c38481573
617 changed files with 65539 additions and 0 deletions
--- a/var/IXR/Pingback.php
+++ b/var/IXR/Pingback.php
@@ -0,0 +1,120 @@
+<?php
+
+namespace IXR;
+
+use Typecho\Common;
+use Typecho\Http\Client as HttpClient;
+use Typecho\Http\Client\Exception as HttpException;
+
+/**
+ * fetch pingback
+ */
+class Pingback
+{
+    /**
+     * @var string
+     */
+    private string $html;
+
+    /**
+     * @var string
+     */
+    private string $target;
+
+    /**
+     * @param string $url
+     * @param string $target
+     * @throws Exception
+     */
+    public function __construct(string $url, string $target)
+    {
+        $client = HttpClient::get();
+        $this->target = $target;
+
+        if (!isset($client)) {
+            throw new Exception('No available http client', 50);
+        }
+
+        try {
+            $client->setTimeout(5)
+                ->send($url);
+        } catch (HttpException $e) {
+            throw new Exception('Pingback http error', 50);
+        }
+
+        if ($client->getResponseStatus() != 200) {
+            throw new Exception('Pingback wrong http status', 50);
+        }
+
+        $response = $client->getResponseBody();
+        $encoding = 'UTF-8';
+        $contentType = $client->getResponseHeader('Content-Type');
+
+        if (!empty($contentType) && preg_match("/charset=([_a-z0-9-]+)/i", $contentType, $matches)) {
+            $encoding = strtoupper($matches[1]);
+        } elseif (preg_match("/<meta\s+charset=\"([_a-z0-9-]+)\"/i", $response, $matches)) {
+            $encoding = strtoupper($matches[1]);
+        }
+
+        $this->html = $encoding == 'UTF-8' ? $response : mb_convert_encoding($response, 'UTF-8', $encoding);
+
+        if (
+            !$client->getResponseHeader('X-Pingback') &&
+            !preg_match_all("/<link[^>]*rel=[\"']pingback[\"'][^>]+href=[\"']([^\"']*)[\"'][^>]*>/i", $this->html)
+        ) {
+            throw new Exception("Source server doesn't support pingback", 50);
+        }
+    }
+
+    /**
+     * get title
+     *
+     * @return string
+     */
+    public function getTitle(): string
+    {
+        if (preg_match("/<title>([^<]*?)<\/title>/is", $this->html, $matchTitle)) {
+            return Common::subStr(Common::removeXSS(trim(strip_tags($matchTitle[1]))), 0, 150, '...');
+        }
+
+        return parse_url($this->target, PHP_URL_HOST);
+    }
+
+    /**
+     * get content
+     *
+     * @return string
+     * @throws Exception
+     */
+    public function getContent(): string
+    {
+        /** 干掉html tag，只留下<a>*/
+        $text = Common::stripTags($this->html, '<a href="">');
+
+        /** 此处将$target quote,留着后面用*/
+        $pregLink = preg_quote($this->target);
+
+        /** 找出含有target链接的最长的一行作为$finalText*/
+        $finalText = null;
+        $lines = explode("\n", $text);
+
+        foreach ($lines as $line) {
+            $line = trim($line);
+            if (null != $line) {
+                if (preg_match("|<a[^>]*href=[\"']{$pregLink}[\"'][^>]*>(.*?)</a>|", $line)) {
+                    if (strlen($line) > strlen($finalText)) {
+                        /** <a>也要干掉，*/
+                        $finalText = Common::stripTags($line);
+                        break;
+                    }
+                }
+            }
+        }
+
+        if (!isset($finalText)) {
+            throw new Exception("Source page doesn't have target url", 50);
+        }
+
+        return '[...]' . Common::subStr($finalText, 0, 200, '') . '[...]';
+    }
+}