Talk about installation and --dry-run

[shpub.git] / src / shpub / Config / Endpoints.php

diff --git a/src/shpub/Config/Endpoints.php b/src/shpub/Config/Endpoints.php
index c029b95c55c6a52af4b4e9687ca6331e87e6cf9e..c3435505d131f9bc1d59315ae1533c311c3967b4 100644 (file)
--- a/src/shpub/Config/Endpoints.php
+++ b/src/shpub/Config/Endpoints.php
@@ -37,5 +37,147 @@ class Config_Endpoints
             || $this->token === null
             || $this->micropub === null;
     }
+
+    public function discover($server)
+    {
+        //TODO: discovery via link headers
+        $baseUrl = new \Net_URL2($server);
+
+        $doc = new \DOMDocument();
+        @$doc->loadHTMLFile($server);
+        $sx = simplexml_import_dom($doc);
+        if ($sx === false) {
+            Log::err('Error loading URL: ' . $server);
+            exit(1);
+        }
+        //$sx->registerXPathNamespace('h', 'http://www.w3.org/1999/xhtml');
+
+        $auths = $sx->xpath(
+            '/html/head/link[@rel="authorization_endpoint" and @href]'
+        );
+        if (!count($auths)) {
+            Log::err('No authorization endpoint found at ' . $server);
+            exit(1);
+        }
+        $this->authorization = (string) $baseUrl->resolve(
+            (string) $auths[0]['href']
+        );
+
+        $tokens = $sx->xpath(
+            '/html/head/link[@rel="token_endpoint" and @href]'
+        );
+        if (!count($tokens)) {
+            Log::err('No token endpoint found');
+            exit(1);
+        }
+        $this->token = (string) $baseUrl->resolve(
+            (string) $tokens[0]['href']
+        );
+
+        $mps = $sx->xpath(
+            '/html/head/link[@rel="micropub" and @href]'
+        );
+        if (!count($mps)) {
+            Log::err('No micropub endpoint found');
+            exit(1);
+        }
+        $this->micropub = (string) $baseUrl->resolve(
+            (string) $mps[0]['href']
+        );
+    }
+
+    public function discoverMedia($accessToken)
+    {
+        $configUrl = $this->micropub;
+        if (strpos($configUrl, '?') === false) {
+            $configUrl .= '?q=config';
+        } else {
+            $configUrl .= '&q=config';
+        }
+
+        $ctx = stream_context_create(
+            [
+                'http' => [
+                    'header' => [
+                        'Accept: application/json',
+                        'Authorization: Bearer ' . $accessToken
+                    ],
+                ]
+            ]
+        );
+        $json = @file_get_contents($configUrl, false, $ctx);
+        if ($json === false) {
+            //does not exist
+            return;
+        }
+        $configData = json_decode($json);
+        if ($configData === null) {
+            //json could not be decoded
+            Log::err('micropub configuration is invalid');
+            return;
+        }
+        if (isset($configData->{'media-endpoint'})) {
+            $configUrlObj = new \Net_URL2($configUrl);
+            $this->media = (string) $configUrlObj->resolve(
+                $configData->{'media-endpoint'}
+            );
+        }
+    }
+
+    public function load($server)
+    {
+        $file = $this->getCacheFilePath($server, false);
+        if ($file === false || !file_exists($file)) {
+            return false;
+        }
+        $data = parse_ini_file($file);
+        foreach ($data as $prop => $val) {
+            if (!property_exists($this, $prop)) {
+                Log::err('Invalid cache config key "' . $prop . '"');
+                exit(1);
+            }
+            $this->$prop = $val;
+        }
+        return true;
+    }
+
+    public function save($server)
+    {
+        $file = $this->getCacheFilePath($server, true);
+        if ($file === false) {
+            return false;
+        }
+
+        file_put_contents(
+            $file,
+            'micropub=' . Config::quoteIniValue($this->micropub) . "\n"
+            . 'media=' . Config::quoteIniValue($this->media) . "\n"
+            . 'token=' . Config::quoteIniValue($this->token) . "\n"
+            . 'authorization='
+            . Config::quoteIniValue($this->authorization) . "\n"
+        );
+    }
+
+    public function getCacheFilePath($server, $create = false)
+    {
+        if (isset($_SERVER['XDG_CACHE_HOME'])
+            && $_SERVER['XDG_CACHE_HOME'] != ''
+        ) {
+            $cacheBaseDir = $_SERVER['XDG_CACHE_HOME'];
+        } else {
+            if (!isset($_SERVER['HOME']) || $_SERVER['HOME'] == '') {
+                Log::err('Cannot determine home directory');
+                return false;
+            }
+            $cacheBaseDir = $_SERVER['HOME'] . '/.cache';
+        }
+
+        $cacheDir = $cacheBaseDir . '/shpub';
+        if (!is_dir($cacheDir) && $create) {
+            mkdir($cacheDir, 0700, true);
+        }
+        $file = $cacheDir . '/' . urlencode($server) . '.ini';
+        return $file;
+    }
 }
 ?>