priv revoke overhaul

priv_revoke.lua

@@ -0,0 +1,58 @@
+
+-- privs to revoke until the verification code is validated
+local temp_revoke_privs = {}
+
+-- mark player health-related privs as "otp_keep" (they don't get removed while entering the otp code)
+for _, name in ipairs({"fly", "noclip"}) do
+    local priv_def = minetest.registered_privileges[name]
+    if priv_def then
+        priv_def.otp_keep = true
+    end
+end
+
+minetest.register_on_mods_loaded(function()
+    -- collect all privs to revoke while entering the otp code
+    for name, priv_def in pairs(minetest.registered_privileges) do
+        if not priv_def.otp_keep then
+            -- not marked explicitly as "keep"
+            table.insert(temp_revoke_privs, name)
+        end
+    end
+end)
+
+-- moves all "temp_revoke_privs" to mod-storage
+function otp.revoke_privs(playername)
+    local privs = minetest.get_player_privs(playername)
+    if otp.storage:get_string(playername .. "_privs") == "" then
+        local moved_privs = {}
+
+        for _, priv_name in ipairs(temp_revoke_privs) do
+            if privs[priv_name] then
+                privs[priv_name] = nil
+                moved_privs[priv_name] = true
+            end
+        end
+
+        minetest.log("action", "[otp] revoking privs of '" .. playername .. "' list: " .. dump(moved_privs))
+        minetest.set_player_privs(playername, privs)
+        otp.storage:set_string(playername .. "_privs", minetest.serialize(moved_privs))
+    end
+end
+
+-- moves all privs from mod-storage into the live privs
+function otp.regrant_privs(playername)
+    local stored_priv_str = otp.storage:get_string(playername .. "_privs")
+    if stored_priv_str ~= "" then
+        local privs = minetest.get_player_privs(playername)
+        local stored_privs = minetest.deserialize(stored_priv_str)
+
+        -- merge stored privs into existing table
+        for priv_name in pairs(stored_privs) do
+            privs[priv_name] = true
+        end
+
+        minetest.log("action", "[otp] regranting privs of '" .. playername .. "' list: " .. dump(stored_privs))
+        minetest.set_player_privs(playername, privs)
+        otp.storage:set_string(playername .. "_privs", "")
+    end
+end