From bec5ba93e23bfe08bc8a95cdc25667cd97b6d128 Mon Sep 17 00:00:00 2001
From: wn_ <invalid@email.com>
Date: Sun, 24 Sep 2017 19:37:49 -0500
Subject: [PATCH] Add 'HOOK_FEED_BASIC_INFO' to enable plugins to provide basic
 feed info.

It's expected the plugin will return content parsable by FeedParser, which
will act as an interface to the basic feed info.  In the case of a plugin
that also uses 'HOOK_FETCH_FEED', both might return the same content.

The hook signature was made somewhat similar to 'HOOK_FETCH_FEED'.
---
 classes/pluginhost.php |  3 ++-
 classes/rssutils.php   | 40 ++++++++++++++++++++++++++++++----------
 2 files changed, 32 insertions(+), 11 deletions(-)

diff --git a/classes/pluginhost.php b/classes/pluginhost.php
index afe4da49..571c30fb 100644
--- a/classes/pluginhost.php
+++ b/classes/pluginhost.php
@@ -54,6 +54,7 @@ class PluginHost {
 	const HOOK_ENCLOSURE_ENTRY = 33;
 	const HOOK_FORMAT_ARTICLE = 34;
 	const HOOK_FORMAT_ARTICLE_CDM = 35;
+	const HOOK_FEED_BASIC_INFO = 36;
 
 	const KIND_ALL = 1;
 	const KIND_SYSTEM = 2;
@@ -436,4 +437,4 @@ class PluginHost {
 	function get_filter_actions() {
 		return $this->plugin_actions;
 	}
-}
\ No newline at end of file
+}
diff --git a/classes/rssutils.php b/classes/rssutils.php
index 460709f0..a656de27 100644
--- a/classes/rssutils.php
+++ b/classes/rssutils.php
@@ -205,9 +205,11 @@ class RSSUtils {
 
 		$feed = db_escape_string($feed);
 
-		$result = db_query("SELECT feed_url,auth_pass,auth_login,auth_pass_encrypted
+		$result = db_query("SELECT owner_uid,feed_url,auth_pass,auth_login,auth_pass_encrypted
 					FROM ttrss_feeds WHERE id = '$feed'");
 
+		$owner_uid = db_fetch_result($result, 0, "owner_uid");
+
 		$auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 			0, "auth_pass_encrypted"));
 
@@ -221,17 +223,35 @@ class RSSUtils {
 
 		$fetch_url = db_fetch_result($result, 0, "feed_url");
 
-		$feed_data = fetch_file_contents($fetch_url, false,
-			$auth_login, $auth_pass, false,
-			FEED_FETCH_TIMEOUT,
-			0);
+		$feed_data = '';
+		
+		$pluginhost = new PluginHost();
+		$user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 
-		global $fetch_curl_used;
+		$pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
+		$pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
+		$pluginhost->load_data();
 
-		if (!$fetch_curl_used) {
-			$tmp = @gzdecode($feed_data);
+		foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_BASIC_INFO) as $plugin) {
+			$feed_data = $plugin->hook_feed_basic_info($fetch_url, $owner_uid, $feed, $auth_login, $auth_pass);
+			if ($feed_data) {
+				break;
+			}
+        }
 
-			if ($tmp) $feed_data = $tmp;
+		if (!$feed_data) {
+			$feed_data = fetch_file_contents($fetch_url, false,
+				$auth_login, $auth_pass, false,
+				FEED_FETCH_TIMEOUT,
+				0);
+
+			global $fetch_curl_used;
+
+			if (!$fetch_curl_used) {
+				$tmp = @gzdecode($feed_data);
+
+				if ($tmp) $feed_data = $tmp;
+			}
 		}
 
 		$feed_data = trim($feed_data);
@@ -1520,4 +1540,4 @@ class RSSUtils {
 
 
 
-}
\ No newline at end of file
+}
-- 
2.39.5