Offer ContentDB updates for leftover bundled Minetest Game

builtin/mainmenu/content/dlg_contentstore.lua

@@ -698,9 +698,7 @@ local function resolve_auto_install_spec()
 	local resolved = nil
 
 	for _, pkg in ipairs(store.packages_full_unordered) do
-		if pkg.author == auto_install_spec.author and
-				(pkg.name == auto_install_spec.name or
-					(pkg.type == "game" and pkg.name == auto_install_spec.name .. "_game")) then
+		if pkg.id == auto_install_spec then
 			resolved = pkg
 			break
 		end
@@ -777,26 +775,26 @@ function store.update_paths()
 	local mod_hash = {}
 	pkgmgr.refresh_globals()
 	for _, mod in pairs(pkgmgr.global_mods:get_list()) do
-		if mod.author and mod.release > 0 then
-			local id = mod.author:lower() .. "/" .. mod.name
-			mod_hash[store.aliases[id] or id] = mod
+		local cdb_id = pkgmgr.get_contentdb_id(mod)
+		if cdb_id then
+			mod_hash[store.aliases[cdb_id] or cdb_id] = mod
 		end
 	end
 
 	local game_hash = {}
 	pkgmgr.update_gamelist()
 	for _, game in pairs(pkgmgr.games) do
-		if game.author ~= "" and game.release > 0 then
-			local id = game.author:lower() .. "/" .. game.id
-			game_hash[store.aliases[id] or id] = game
+		local cdb_id = pkgmgr.get_contentdb_id(game)
+		if cdb_id then
+			game_hash[store.aliases[cdb_id] or cdb_id] = game
 		end
 	end
 
 	local txp_hash = {}
 	for _, txp in pairs(pkgmgr.get_texture_packs()) do
-		if txp.author and txp.release > 0 then
-			local id = txp.author:lower() .. "/" .. txp.name
-			txp_hash[store.aliases[id] or id] = txp
+		local cdb_id = pkgmgr.get_contentdb_id(txp)
+		if cdb_id then
+			txp_hash[store.aliases[cdb_id] or cdb_id] = txp
 		end
 	end
 
@@ -815,6 +813,7 @@ function store.update_paths()
 			package.installed_release = content.release or 0
 		else
 			package.path = nil
+			package.installed_release = nil
 		end
 	end
 end
@@ -1193,7 +1192,7 @@ end
 --- @param type string | nil
 --- Sets initial package filter. "game", "mod", "txp" or nil (no filter).
 --- @param install_spec table | nil
---- Package specification of the form { author = string, name = string }.
+--- ContentDB ID of package as returned by pkgmgr.get_contentdb_id().
 --- Sets package to install or update automatically.
 function create_store_dlg(type, install_spec)
 	search_string = ""

builtin/mainmenu/content/pkgmgr.lua

@@ -777,6 +777,30 @@ function pkgmgr.update_gamelist()
 	end)
 end
 
+--------------------------------------------------------------------------------
+-- Returns the ContentDB ID for an installed piece of content.
+function pkgmgr.get_contentdb_id(content)
+	-- core.get_games() will return "" instead of nil if there is no "author" field.
+	if content.author and content.author ~= "" and content.release > 0 then
+		if content.type == "game" then
+			return content.author:lower() .. "/" .. content.id
+		end
+		return content.author:lower() .. "/" .. content.name
+	end
+
+	-- Until Minetest 5.8.0, Minetest Game was bundled with Minetest.
+	-- Unfortunately, the bundled MTG was not versioned (missing "release"
+	-- field in game.conf).
+	-- Therefore, we consider any installation of MTG that is not versioned,
+	-- has not been cloned from Git, and is not system-wide to be updatable.
+	if content.type == "game" and content.id == "minetest" and content.release == 0 and
+			not core.is_dir(content.path .. "/.git") and core.may_modify_path(content.path) then
+		return "minetest/minetest"
+	end
+
+	return nil
+end
+
 --------------------------------------------------------------------------------
 -- read initial data
 --------------------------------------------------------------------------------

builtin/mainmenu/content/update_detector.lua

@@ -59,7 +59,7 @@ local function has_packages_from_cdb()
 	pkgmgr.update_gamelist()
 
 	for _, content in pairs(pkgmgr.get_all()) do
-		if content.author and content.release > 0 then
+		if pkgmgr.get_contentdb_id(content) then
 			return true
 		end
 	end
@@ -114,18 +114,13 @@ function update_detector.get_all()
 	local ret = {}
 	local all_content = pkgmgr.get_all()
 	for _, content in ipairs(all_content) do
-		if content.author and content.release > 0 then
-			-- The backend will account for aliases in `latest_releases`
-			local id = content.author:lower() .. "/"
-			if content.type == "game" then
-				id = id .. content.id
-			else
-				id = id .. content.name
-			end
+		local cdb_id = pkgmgr.get_contentdb_id(content)
 
-			local latest_release = latest_releases[id]
+		if cdb_id then
+			-- The backend will account for aliases in `latest_releases`
+			local latest_release = latest_releases[cdb_id]
 			if not latest_release and content.type == "game" then
-				latest_release = latest_releases[id .. "_game"]
+				latest_release = latest_releases[cdb_id .. "_game"]
 			end
 
 			if latest_release and latest_release > content.release then

builtin/mainmenu/dlg_reinstall_mtg.lua

@@ -78,7 +78,7 @@ local function buttonhandler(this, fields)
 
 		local maintab = ui.find_by_name("maintab")
 
-		local dlg = create_store_dlg(nil, { author = "Minetest", name = "minetest_game" })
+		local dlg = create_store_dlg(nil, "minetest/minetest")
 		dlg:set_parent(maintab)
 		maintab:hide()
 		dlg:show()

builtin/mainmenu/tab_content.lua

@@ -254,7 +254,7 @@ local function handle_buttons(tabview, fields, tabname, tabdata)
 
 	if fields.btn_mod_mgr_update then
 		local pkg = packages:get_list()[tabdata.selected_pkg]
-		local dlg = create_store_dlg(nil, { author = pkg.author, name = pkg.id or pkg.name })
+		local dlg = create_store_dlg(nil, pkgmgr.get_contentdb_id(pkg))
 		dlg:set_parent(tabview)
 		tabview:hide()
 		dlg:show()