tt-rss/modules/backend-rpc.php

<?php
	function handle_rpc_request($link) {

		$subop = $_REQUEST["subop"];

		if ($subop == "setprofile") {
			$id = db_escape_string($_REQUEST["id"]);

			$_SESSION["profile"] = $id;
			$_SESSION["prefs_cache"] = array();
			return;
		}

		if ($subop == "remprofiles") {
			$ids = split(",", db_escape_string(trim($_REQUEST["ids"])));

			foreach ($ids as $id) {
				if ($_SESSION["profile"] != $id) {
					db_query($link, "DELETE FROM ttrss_settings_profiles WHERE id = '$id' AND
						owner_uid = " . $_SESSION["uid"]);
				}
			}
			return;
		}

		if ($subop == "addprofile") {
			$title = db_escape_string(trim($_REQUEST["title"]));
			if ($title) {
				db_query($link, "BEGIN");

				$result = db_query($link, "SELECT id FROM ttrss_settings_profiles
					WHERE title = '$title' AND owner_uid = " . $_SESSION["uid"]);

				if (db_num_rows($result) == 0) {

					db_query($link, "INSERT INTO ttrss_settings_profiles (title, owner_uid)
						VALUES ('$title', ".$_SESSION["uid"] .")");
	
					$result = db_query($link, "SELECT id FROM ttrss_settings_profiles WHERE
						title = '$title'");
	
					if (db_num_rows($result) != 0) {
						$profile_id = db_fetch_result($result, 0, "id");
	
						if ($profile_id) {
							initialize_user_prefs($link, $_SESSION["uid"], $profile_id); 
						}
					}
				}

				db_query($link, "COMMIT");
			}
			return;
		}

		if ($subop == "saveprofile") {
			$id = db_escape_string($_REQUEST["id"]);
			$title = db_escape_string(trim($_REQUEST["value"]));

			if ($id == 0) {
				print __("Default profile");
				return;
			}

			if ($title) {
				db_query($link, "BEGIN");

				$result = db_query($link, "SELECT id FROM ttrss_settings_profiles
					WHERE title = '$title' AND owner_uid =" . $_SESSION["uid"]);

				if (db_num_rows($result) == 0) {
					db_query($link, "UPDATE ttrss_settings_profiles
						SET title = '$title' WHERE id = '$id' AND
						owner_uid = " . $_SESSION["uid"]);
					print $title;
				} else {
					$result = db_query($link, "SELECT title FROM ttrss_settings_profiles
						WHERE id = '$id' AND owner_uid =" . $_SESSION["uid"]);
					print db_fetch_result($result, 0, "title");
				}

				db_query($link, "COMMIT");
			}			
			return;
		}

		if ($subop == "remarchive") {
			$ids = split(",", db_escape_string($_REQUEST["ids"]));

			print "<rpc-reply>";

			foreach ($ids as $id) {
				$result = db_query($link, "DELETE FROM ttrss_archived_feeds WHERE
					(SELECT COUNT(*) FROM ttrss_user_entries 
						WHERE orig_feed_id = '$id') = 0 AND
						id = '$id' AND owner_uid = ".$_SESSION["uid"]);

				$rc = db_affected_rows($link, $result);

				print "<feed id='$id' rc='$rc'/>";

			}

			print "</rpc-reply>";

			return;
		}

		if ($subop == "addfeed") {

			$feed = db_escape_string($_REQUEST['feed']);
			$cat = db_escape_string($_REQUEST['cat']);
			$login = db_escape_string($_REQUEST['login']);
			$pass = db_escape_string($_REQUEST['pass']);

			$rc = subscribe_to_feed($link, $feed, $cat, $login, $pass);

			print "<rpc-reply>";
			print "<result code='$rc'/>";
			print "</rpc-reply>";

			return;

		}

		if ($subop == "extractfeedurls") {
			print "<rpc-reply>";

			$urls = get_feeds_from_html($_REQUEST['url']);
			print "<urls><![CDATA[" . json_encode($urls) . "]]></urls>";

			print "</rpc-reply>";
			return;
		}

		if ($subop == "togglepref") {
			print "<rpc-reply>";

			$key = db_escape_string($_REQUEST["key"]);

			set_pref($link, $key, !get_pref($link, $key));

			$value = get_pref($link, $key);

			print "<param-set key=\"$key\" value=\"$value\"/>";

			print "</rpc-reply>";

			return;
		}

		if ($subop == "setpref") {
			print "<rpc-reply>";

			$key = db_escape_string($_REQUEST["key"]);
			$value = db_escape_string($_REQUEST["value"]);

			set_pref($link, $key, $value);

			print "<param-set key=\"$key\" value=\"$value\"/>";

			print "</rpc-reply>";

			return;
		}

		if ($subop == "mark") {
			$mark = $_REQUEST["mark"];
			$id = db_escape_string($_REQUEST["id"]);

			if ($mark == "1") {
				$mark = "true";
			} else {
				$mark = "false";
			}

			// FIXME this needs collision testing

			$result = db_query($link, "UPDATE ttrss_user_entries SET marked = $mark
				WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "delete") {
			$ids = db_escape_string($_REQUEST["ids"]);

			$result = db_query($link, "DELETE FROM ttrss_user_entries 				
				WHERE ref_id IN ($ids) AND owner_uid = " . $_SESSION["uid"]);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "unarchive") {
			$ids = db_escape_string($_REQUEST["ids"]);

			$result = db_query($link, "UPDATE ttrss_user_entries 
				SET feed_id = orig_feed_id, orig_feed_id = NULL
				WHERE ref_id IN ($ids) AND owner_uid = " . $_SESSION["uid"]);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "archive") {
			$ids = split(",", db_escape_string($_REQUEST["ids"]));

			foreach ($ids as $id) {
				archive_article($link, $id, $_SESSION["uid"]);
			}

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}


		if ($subop == "publ") {
			$pub = $_REQUEST["pub"];
			$id = db_escape_string($_REQUEST["id"]);
			$note = trim(strip_tags(db_escape_string($_REQUEST["note"])));

			if ($pub == "1") {
				$pub = "true";
			} else {
				$pub = "false";
			}

			if ($note != 'undefined') {
				$note_qpart = "note = '$note',";
			}

			// FIXME this needs collision testing

			$result = db_query($link, "UPDATE ttrss_user_entries SET 
				$note_qpart
				published = $pub
				WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);


			print "<rpc-reply>";
			
			if ($note != 'undefined') {
				$note_size = strlen($note);
				print "<note id=\"$id\" size=\"$note_size\">";
				print "<![CDATA[" . format_article_note($id, $note) . "]]>";
				print "</note>";
			}

			print "<message>UPDATE_COUNTERS</message>";

			print "</rpc-reply>";

			return;
		}

		if ($subop == "updateFeed") {
			$feed_id = db_escape_string($_REQUEST["feed"]);

			update_rss_feed($link, $feed_id);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "updateAllFeeds" || $subop == "getAllCounters") {

			$last_article_id = (int) $_REQUEST["last_article_id"];	

			print "<rpc-reply>";

			if ($last_article_id != getLastArticleId($link)) {
				print "<counters><![CDATA[";
				$omode = $_REQUEST["omode"];

				if ($omode != "T") 
					print json_encode(getAllCounters($link, $omode));
				else
					print json_encode(getGlobalCounters($link));

				print "]]></counters>";
			}
 
			print_runtime_info($link);

			print "</rpc-reply>";

			return;
		}

		/* GET["cmode"] = 0 - mark as read, 1 - as unread, 2 - toggle */
		if ($subop == "catchupSelected") {

			$ids = split(",", db_escape_string($_REQUEST["ids"]));
			$cmode = sprintf("%d", $_REQUEST["cmode"]);

			catchupArticlesById($link, $ids, $cmode);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "markSelected") {

			$ids = split(",", db_escape_string($_REQUEST["ids"]));
			$cmode = sprintf("%d", $_REQUEST["cmode"]);

			markArticlesById($link, $ids, $cmode);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "publishSelected") {

			$ids = split(",", db_escape_string($_REQUEST["ids"]));
			$cmode = sprintf("%d", $_REQUEST["cmode"]);

			publishArticlesById($link, $ids, $cmode);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "sanityCheck") {
			print "<rpc-reply>";
			if (sanity_check($link)) {
				print "<error error-code=\"0\"/>";

				print "<init-params><![CDATA[";
				print json_encode(make_init_params($link));
				print "]]></init-params>";

				print_runtime_info($link);

				# assign client-passed params to session
				$_SESSION["client.userAgent"] = $_REQUEST["ua"];

			}
			print "</rpc-reply>";

			return;
		}		

		if ($subop == "globalPurge") {

			print "<rpc-reply>";
			global_purge_old_posts($link, true);
			print "</rpc-reply>";

			return;
		}

		if ($subop == "getArticleLink") {

			$id = db_escape_string($_REQUEST["id"]);

			$result = db_query($link, "SELECT link FROM ttrss_entries, ttrss_user_entries
				WHERE id = '$id' AND id = ref_id AND owner_uid = '".$_SESSION['uid']."'");

			if (db_num_rows($result) == 1) {
				$link = htmlspecialchars(strip_tags(db_fetch_result($result, 0, "link")));
				print "<rpc-reply><link>$link</link><id>$id</id></rpc-reply>";
			} else {
				print "<rpc-reply><error>Article not found</error></rpc-reply>";
			}

			return;
		}

		if ($subop == "setArticleTags") {

			global $memcache;

			$id = db_escape_string($_REQUEST["id"]);

			$tags_str = db_escape_string($_REQUEST["tags_str"]);
			$tags = array_unique(trim_array(split(",", $tags_str)));

			db_query($link, "BEGIN");

			$result = db_query($link, "SELECT int_id FROM ttrss_user_entries WHERE
				ref_id = '$id' AND owner_uid = '".$_SESSION["uid"]."' LIMIT 1");

			if (db_num_rows($result) == 1) {

				$tags_to_cache = array();

				$int_id = db_fetch_result($result, 0, "int_id");

				db_query($link, "DELETE FROM ttrss_tags WHERE 
					post_int_id = $int_id AND owner_uid = '".$_SESSION["uid"]."'");

				foreach ($tags as $tag) {
					$tag = sanitize_tag($tag);	

					if (!tag_is_valid($tag)) {
						continue;
					}

					if (preg_match("/^[0-9]*$/", $tag)) {
						continue;
					}

//					print "<!-- $id : $int_id : $tag -->";
					
					if ($tag != '') {
						db_query($link, "INSERT INTO ttrss_tags 
							(post_int_id, owner_uid, tag_name) VALUES ('$int_id', '".$_SESSION["uid"]."', '$tag')");
					}

					array_push($tags_to_cache, $tag);
				}

				/* update tag cache */

				$tags_str = join(",", $tags_to_cache);

				db_query($link, "UPDATE ttrss_user_entries 
					SET tag_cache = '$tags_str' WHERE ref_id = '$id'
					AND owner_uid = " . $_SESSION["uid"]);
			}

			db_query($link, "COMMIT");

			if ($memcache) {
				$obj_id = md5("TAGS:".$_SESSION["uid"].":$id");
				$memcache->delete($obj_id);
			}

			$tags_str = format_tags_string(get_article_tags($link, $id), $id);

			print "<rpc-reply>
				<tags-str id=\"$id\"><![CDATA[$tags_str]]></tags-str>
				</rpc-reply>";

			return;
		}

		if ($subop == "regenOPMLKey") {

			print "<rpc-reply>";

			update_feed_access_key($link, 'OPML:Publish', 
				false, $_SESSION["uid"]);

			$new_link = opml_publish_url($link);		
			print "<link><![CDATA[$new_link]]></link>";
			print "</rpc-reply>";
			return;
		}

		if ($subop == "logout") {
			logout_user();
			print_error_xml(6);
			return;
		}

		if ($subop == "completeTags") {

			$search = db_escape_string($_REQUEST["search"]);

			$result = db_query($link, "SELECT DISTINCT tag_name FROM ttrss_tags 
				WHERE owner_uid = '".$_SESSION["uid"]."' AND
			  	tag_name LIKE '$search%' ORDER BY tag_name
				LIMIT 10");

			print "<ul>";
			while ($line = db_fetch_assoc($result)) {
				print "<li>" . $line["tag_name"] . "</li>";
			}
			print "</ul>";

			return;
		}

		if ($subop == "purge") {
			$ids = split(",", db_escape_string($_REQUEST["ids"]));
			$days = sprintf("%d", $_REQUEST["days"]);

			print "<rpc-reply>";

			print "<message><![CDATA[";

			foreach ($ids as $id) {

				$result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
					id = '$id' AND owner_uid = ".$_SESSION["uid"]);

				if (db_num_rows($result) == 1) {
					purge_feed($link, $id, $days, true);
				}
			}

			print "]]></message>";

			print "</rpc-reply>";

			return;
		}

/*		if ($subop == "setScore") {
			$id = db_escape_string($_REQUEST["id"]);
			$score = sprintf("%d", $_REQUEST["score"]);

			$result = db_query($link, "UPDATE ttrss_user_entries SET score = '$score'
				WHERE ref_id = '$id' AND owner_uid = ".$_SESSION["uid"]);

			print "<rpc-reply><message>Acknowledged.</message></rpc-reply>";

			return;

		} */

		if ($subop == "getArticles") {
			$ids = split(",", db_escape_string($_REQUEST["ids"]));

			print "<rpc-reply>";

			foreach ($ids as $id) {
				if ($id) {
					outputArticleXML($link, $id, 0, false);
				}
			}
			print "</rpc-reply>";

			return;
		}

		if ($subop == "checkDate") {

			$date = db_escape_string($_REQUEST["date"]);
			$date_parsed = strtotime($date);

			print "<rpc-reply>";

			if ($date_parsed) {
				print "<result>1</result>";
			} else {
				print "<result>0</result>";
			}

			print "</rpc-reply>";

			return;
		}

		if ($subop == "removeFromLabel") {

			$ids = explode(",", db_escape_string($_REQUEST["ids"]));
			$label_id = db_escape_string($_REQUEST["lid"]);

			$label = db_escape_string(label_find_caption($link, $label_id, 
				$_SESSION["uid"]));

			print "<rpc-reply>";
			print "<info-for-headlines>";

			if ($label) {

				foreach ($ids as $id) {
					label_remove_article($link, $id, $label, $_SESSION["uid"]);

					print "<entry id=\"$id\"><![CDATA[";

					$labels = get_article_labels($link, $id, $_SESSION["uid"]);
					print format_article_labels($labels, $id);

					print "]]></entry>";

				}
			}

			print "</info-for-headlines>";

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "assignToLabel") {

			$ids = split(",", db_escape_string($_REQUEST["ids"]));
			$label_id = db_escape_string($_REQUEST["lid"]);

			$label = db_escape_string(label_find_caption($link, $label_id, 
				$_SESSION["uid"]));

			print "<rpc-reply>";			

			print "<info-for-headlines>";

			if ($label) {

				foreach ($ids as $id) {
					label_add_article($link, $id, $label, $_SESSION["uid"]);

					print "<entry id=\"$id\"><![CDATA[";

					$labels = get_article_labels($link, $id, $_SESSION["uid"]);
					print format_article_labels($labels, $id);

					print "]]></entry>";

				}
			}

			print "</info-for-headlines>";

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		if ($subop == "updateFeedBrowser") {

			$search = db_escape_string($_REQUEST["search"]);
			$limit = db_escape_string($_REQUEST["limit"]);
			$mode = db_escape_string($_REQUEST["mode"]);

			print "<rpc-reply>";
			print "<content>";
			print "<![CDATA[";
			$ctr = print_feed_browser($link, $search, $limit, $mode);
			print "]]>";
			print "</content>";
			print "<num-results value=\"$ctr\"/>";
			print "<mode value=\"$mode\"/>";
			print "</rpc-reply>";

			return;
		}


		if ($subop == "massSubscribe") {

			$ids = split(",", db_escape_string($_REQUEST["ids"]));
			$mode = $_REQUEST["mode"];

			$subscribed = array();

			foreach ($ids as $id) {

				if ($mode == 1) {
					$result = db_query($link, "SELECT feed_url,title FROM ttrss_feeds
						WHERE id = '$id'");
				} else if ($mode == 2) {
					$result = db_query($link, "SELECT * FROM ttrss_archived_feeds
						WHERE id = '$id' AND owner_uid = " . $_SESSION["uid"]);
					$orig_id = db_escape_string(db_fetch_result($result, 0, "id"));
					$site_url = db_escape_string(db_fetch_result($result, 0, "site_url"));
				}
	
				$feed_url = db_escape_string(db_fetch_result($result, 0, "feed_url"));
				$title = db_escape_string(db_fetch_result($result, 0, "title"));
	
				$title_orig = db_fetch_result($result, 0, "title");
	
				$result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
						feed_url = '$feed_url' AND owner_uid = " . $_SESSION["uid"]);
	
				if (db_num_rows($result) == 0) {			
					if ($mode == 1) {
						$result = db_query($link,
							"INSERT INTO ttrss_feeds (owner_uid,feed_url,title,cat_id) 
							VALUES ('".$_SESSION["uid"]."', '$feed_url', '$title', NULL)");
					} else if ($mode == 2) {
						$result = db_query($link,
							"INSERT INTO ttrss_feeds (id,owner_uid,feed_url,title,cat_id,site_url) 
							VALUES ('$orig_id','".$_SESSION["uid"]."', '$feed_url', '$title', NULL, '$site_url')");
					}
					array_push($subscribed, $title_orig);
				}
			}

			$num_feeds = count($subscribed);

			print "<rpc-reply>";
			print "<num-feeds value='$num_feeds'/>";
			print "</rpc-reply>";

			return;
		} 

		if ($subop == "download") {
			$stage = (int) $_REQUEST["stage"];
			$cidt = (int)db_escape_string($_REQUEST["cidt"]);
			$cidb = (int)db_escape_string($_REQUEST["cidb"]);
			$sync = db_escape_string($_REQUEST["sync"]);
			//$amount = (int) $_REQUEST["amount"];
			//$unread_only = db_escape_string($_REQUEST["unread_only"]);
			//if (!$amount) $amount = 50;

			/* Amount is not used by the frontend offline.js anymore, it goes by
			 * date_qpart below + cidb/cidt IDs */

			$amount = 2000;
			$unread_only = true;

			print "<rpc-reply>";

			$sync = split(";", $sync);

			print "<sync>";

			if (count($sync) > 0) {
				if (strtotime($sync[0])) {
					$last_online = db_escape_string($sync[0]);

					print "<sync-point><![CDATA[$last_online]]></sync-point>";
					
					for ($i = 1; $i < count($sync); $i++) {
						$e = split(",", $sync[$i]);

						if (count($e) == 3) {

							$id = (int) $e[0];
							$unread = bool_to_sql_bool((bool) $e[1]);
							$marked = (bool)$e[2];

							if ($marked) {
								$marked = bool_to_sql_bool($marked);
								$marked_qpart = "marked = $marked,";
							}

							$query = "UPDATE ttrss_user_entries SET 
								$marked_qpart
								unread = $unread, 
								last_read = '$last_online' 
							WHERE ref_id = '$id' AND 
								(last_read IS NULL OR last_read < '$last_online') AND
								owner_uid = ".$_SESSION["uid"];

							$result = db_query($link, $query);

							print "<sync-ok id=\"$id\"/>";

						}
					}

					/* Maybe we need to further update local DB for this client */

					$query = "SELECT ref_id,unread,marked FROM ttrss_user_entries
						WHERE last_read >= '$last_online' AND
								owner_uid = ".$_SESSION["uid"] . " LIMIT 1000";

					$result = db_query($link, $query);

					while ($line = db_fetch_assoc($result)) {
						$unread = (int) sql_bool_to_bool($line["unread"]);
						$marked = (int) sql_bool_to_bool($line["marked"]);

						print "<sync-ok unread=\"$unread\" marked=\"$marked\" 
							id=\"".$line["ref_id"]."\"/>";
					}

				}
			}

			print "</sync>";

			if ($stage == 0) {
				print "<feeds>";

				$result = db_query($link, "SELECT id, title, cat_id FROM
					ttrss_feeds WHERE owner_uid = ".$_SESSION["uid"]);

				while ($line = db_fetch_assoc($result)) {

					$has_icon = (int) feed_has_icon($line["id"]);

					print "<feed has_icon=\"$has_icon\" 
						cat_id=\"".(int)$line["cat_id"]."\" id=\"".$line["id"]."\"><![CDATA[";
					print $line["title"];
					print "]]></feed>";
				}

				print "</feeds>";

				print "<feed-categories>";

				$result = db_query($link, "SELECT id, title, collapsed FROM
					ttrss_feed_categories WHERE owner_uid = ".$_SESSION["uid"]);

					print "<category id=\"0\" collapsed=\"".
						(int)get_pref($link, "_COLLAPSED_UNCAT")."\"><![CDATA[";
					print __("Uncategorized");
					print "]]></category>";

					print "<category id=\"-1\" collapsed=\"".
						(int)get_pref($link, "_COLLAPSED_SPECIAL")."\"><![CDATA[";
					print __("Special");
					print "]]></category>";

					print "<category id=\"-2\" collapsed=\"".
						(int)get_pref($link, "_COLLAPSED_LABELS")."\"><![CDATA[";
					print __("Labels");
					print "]]></category>";

				while ($line = db_fetch_assoc($result)) {
					print "<category 
						id=\"".$line["id"]."\"
						collapsed=\"".(int)sql_bool_to_bool($line["collapsed"])."\"><![CDATA[";
					print $line["title"];
					print "]]></category>";
				}

				print "</feed-categories>";

				print "<labels>";

				$result = db_query($link, "SELECT * FROM
					ttrss_labels2 WHERE owner_uid = ".$_SESSION["uid"]);

				while ($line = db_fetch_assoc($result)) {
					print "<label
						id=\"".$line["id"]."\"
						fg_color=\"".$line["fg_color"]."\"
						bg_color=\"".$line["bg_color"]."\"
						><![CDATA[";
					print $line["caption"];
					print "]]></label>";
				}


				print "</labels>";

			}

			if ($stage > 0) {
				print "<articles>";

				$limit = 10;
				$skip = $limit*($stage-1);

				print "<limit value=\"$limit\"/>";

				if ($amount > 0) $amount -= $skip;

				if ($amount > 0) {

					$limit = min($limit, $amount);

					if ($unread_only) {
						$unread_qpart = "(unread = true OR marked = true) AND ";
					}

					if ($cidt && $cidb) {
						$cid_qpart =  "(ttrss_entries.id > $cidt OR ttrss_entries.id < $cidb) AND ";
					}

					if (DB_TYPE == "pgsql") {
						$date_qpart = "updated >= NOW() - INTERVAL '1 week' AND";
					} else {
						$date_qpart = "updated >= DATE_SUB(NOW(), INTERVAL 1 WEEK) AND";
					}			

					$result = db_query($link,
						"SELECT DISTINCT ttrss_entries.id,ttrss_entries.title,
							guid,link,comments,
							feed_id,content,updated,unread,marked FROM
							ttrss_user_entries,ttrss_entries,ttrss_feeds
						WHERE $unread_qpart $cid_qpart $date_qpart
							ttrss_feeds.id = feed_id AND
							ref_id = ttrss_entries.id AND 
							ttrss_user_entries.owner_uid = ".$_SESSION["uid"]."
							ORDER BY updated DESC LIMIT $limit OFFSET $skip");

					if (function_exists('json_encode')) {

						while ($line = db_fetch_assoc($result)) {
							print "<article><![CDATA[";
	
							$line["marked"] = (int)sql_bool_to_bool($line["marked"]);
							$line["unread"] = (int)sql_bool_to_bool($line["unread"]);

							$line["labels"] = get_article_labels($link, $line["id"]);

//							too slow :(							
//							$line["tags"] = format_tags_string(
//								get_article_tags($link, $line["id"]), $line["id"]);
	
							print json_encode($line);
							print "]]></article>";
						}	
					}

				}

				print "</articles>";

			}

			print "</rpc-reply>";

			return;
		}

		if ($subop == "digest-get-contents") {
			$article_id = db_escape_string($_REQUEST['article_id']);

			$result = db_query($link, "SELECT content 
				FROM ttrss_entries, ttrss_user_entries
				WHERE id = '$article_id' AND ref_id = id AND owner_uid = ".$_SESSION['uid']);

			print "<rpc-reply>";

			print "<article id=\"$article_id\"><![CDATA[";

			$content = sanitize_rss($link, db_fetch_result($result, 0, "content"));

			print $content;

			print "]]></article>";

			print "</rpc-reply>";

			return;
		}

		if ($subop == "digest-update") {
			$feed_id = db_escape_string($_REQUEST['feed_id']);
			$offset = db_escape_string($_REQUEST['offset']);
			$seq = db_escape_string($_REQUEST['seq']);
		
			if (!$feed_id) $feed_id = -4;
			if (!$offset) $offset = 0;
			print "<rpc-reply>";

			print "<seq>$seq</seq>";

			$headlines = api_get_headlines($link, $feed_id, 10, $offset,
				'', ($feed_id == -4), true, false, "unread", "updated DESC");

			//function api_get_headlines($link, $feed_id, $limit, $offset,
			//		$filter, $is_cat, $show_excerpt, $show_content, $view_mode) {

			print "<headlines-title><![CDATA[" . getFeedTitle($link, $feed_id) . 
				"]]></headlines-title>";

			print "<headlines><![CDATA[" . json_encode($headlines) . "]]></headlines>";

			print "</rpc-reply>";
			return;
		}

		if ($subop == "digest-init") {
			print "<rpc-reply>";

			$tmp_feeds = api_get_feeds($link, false, true, false, 0);
			$feeds = array();

			foreach ($tmp_feeds as $f) {
				if ($f['id'] > 0 || $f['id'] == -4) array_push($feeds, $f);
			}

			print "<feeds><![CDATA[" . json_encode($feeds) . "]]></feeds>";

			print "</rpc-reply>";
			return;
		}

		if ($subop == "catchupFeed") {

			$feed_id = db_escape_string($_REQUEST['feed_id']);
			$is_cat = db_escape_string($_REQUEST['is_cat']);

			print "<rpc-reply>";

			catchup_feed($link, $feed_id, $is_cat);

			print "</rpc-reply>";

			return;
		}

		if ($subop == "sendEmail") {
			$secretkey = $_REQUEST['secretkey'];

			print "<rpc-reply>";

			if (DIGEST_ENABLE && $_SESSION['email_secretkey'] && 
						$secretkey == $_SESSION['email_secretkey']) {

				$_SESSION['email_secretkey'] = '';

				$destination = $_REQUEST['destination'];
				$subject = $_REQUEST['subject'];
				$content = $_REQUEST['content'];

				$replyto = strip_tags($_SESSION['email_replyto']);
				$fromname = strip_tags($_SESSION['email_fromname']);

				$mail = new PHPMailer();

				$mail->PluginDir = "lib/phpmailer/";
				$mail->SetLanguage("en", "lib/phpmailer/language/");

				$mail->CharSet = "UTF-8";

				$mail->From = $replyto;
				$mail->FromName = $fromname;
				$mail->AddAddress($destination);

				if (DIGEST_SMTP_HOST) {
					$mail->Host = DIGEST_SMTP_HOST;
					$mail->Mailer = "smtp";
					$mail->SMTPAuth = DIGEST_SMTP_LOGIN != '';
					$mail->Username = DIGEST_SMTP_LOGIN;
					$mail->Password = DIGEST_SMTP_PASSWORD;
				}

				$mail->IsHTML(false);
				$mail->Subject = $subject;
				$mail->Body = $content;

				$rc = $mail->Send();

				if (!$rc) {
					print "<error><![CDATA[" . $mail->ErrorInfo . "]]></error>";
				} else {
					save_email_address($link, db_escape_string($destination));
					print "<message>UPDATE_COUNTERS</message>";
				}

			} else {
				print "<error>Not authorized.</error>";
			}

			print "</rpc-reply>";

			return;
		}

		if ($subop == "completeEmails") {

			$search = db_escape_string($_REQUEST["search"]);

			print "<ul>";

			foreach ($_SESSION['stored_emails'] as $email) {
				if (strpos($email, $search) !== false) {
					print "<li>$email</li>";
				}
			}

			print "</ul>";

			return;
		}

		if ($subop == "quickAddCat") {
			print "<rpc-reply>";	

			$cat = db_escape_string($_REQUEST["cat"]);

			add_feed_category($link, $cat);

			$result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE
				title = '$cat' AND owner_uid = " . $_SESSION["uid"]);

			if (db_num_rows($result) == 1) {
				$id = db_fetch_result($result, 0, "id");
			} else {
				$id = 0;
			}

			print_feed_cat_select($link, "cat_id", $id);

			print "</rpc-reply>";

			return;
		}

		if ($subop == "regenFeedKey") {
			$feed_id = db_escape_string($_REQUEST['id']);
			$is_cat = (bool) db_escape_string($_REQUEST['is_cat']);

			print "<rpc-reply>";

			$new_key = update_feed_access_key($link, $feed_id, $is_cat);

			print "<link><![CDATA[$new_key]]></link>";

			print "</rpc-reply>";

			return;
		}

		if ($subop == "clearKeys") {

			db_query($link, "DELETE FROM ttrss_access_keys WHERE
				owner_uid = " . $_SESSION["uid"]);

			print "<rpc-reply>";
			print "<message>UPDATE_COUNTERS</message>";
			print "</rpc-reply>";

			return;
		}

		print "<rpc-reply><error>Unknown method: $subop</error></rpc-reply>";
	}
?>