Added user system.

Default users are `admin` (password `admin`, UID 1) and `user` (password
`user`, UID 2).

halyde/kernel/modules/tsched.lua

@@ -68,23 +68,20 @@ function module.init()
     checkArg(1, func, "function")
     checkArg(2, name, "string")
     local task = coroutine.create(func)
-    local taskInfo = { ["task"] = task, ["name"] = name, ["id"] = idCounter }
+    local taskInfo = { ["task"] = task, ["name"] = name, ["id"] = idCounter}
     if type(tsched.currentTask) == "table" and type(tsched.currentTask.id) == "number" then
       taskInfo.parent = tsched.currentTask.id
+      taskInfo.user = tsched.currentTask.user
     end
     table.insert(tsched.tasks, taskInfo)
     idCounter = idCounter + 1
     if taskInfo.parent then
       log.kernel.info(
-        string.format(
-          "[tsched] Created task %s with PID %d by parent with PID %d",
-          name,
-          idCounter - 1,
-          taskInfo.parent
-        )
+        ("[tsched] Created task %s (PID %d) by parent PID %d as UID %d"):format(name, idCounter - 1, taskInfo.parent, taskInfo.user)
       )
     else
-      log.kernel.info(string.format("[tsched] Created task %s with PID %d (no parent found)", name, idCounter - 1))
+      taskInfo.user = 1 -- It's probably being run from kernel level
+      log.kernel.info(string.format("[tsched] Created task %s (PID %d) as UID 1 (no parent found)", name, idCounter - 1))
     end
     return task, taskInfo
   end

halyde/kernel/modules/user.lua

@@ -0,0 +1,60 @@
+local module = {}
+
+function module.check()
+  return true -- The user system is kind of essential all the time...
+end
+
+function module.init()
+  local fs = require("filesystem")
+  local md5 = require("md5")
+  local json = require("json")
+  local log = require("log")
+
+  _PUBLIC.user = {}
+
+  function _PUBLIC.user.addTask(func, name, userId, userPassword)
+    checkArg(1, func, "function")
+    checkArg(2, name, "string")
+    checkArg(3, userId, "number")
+    checkArg(4, userPassword, "string")
+
+    local handle, data, tmpdata = fs.open("/halyde/kernel/userreg.json"), "", nil
+    repeat
+      tmpdata = handle:read(math.huge)
+      data = data .. (tmpdata or "")
+    until not tmpdata
+
+    local userRegistry = json.decode(data)
+
+    if not userRegistry[userId] then
+      return false, "No such UID"
+    end
+
+    local salt = md5.sumhexa(userRegistry[userId].name) -- A little bit of salt and pepper
+    local passwordHash = md5.sumhexa(userPassword .. salt)
+    if passwordHash ~= userRegistry[userId].hash then
+      wait(3) -- Something to hopefully shove away brute forcers
+      return false, "Password incorrect"
+    end
+
+    local task = coroutine.create(func)
+    local taskInfo = { ["task"] = task, ["name"] = name, ["id"] = #_PUBLIC.tsched.getTasks() + 1, ["user"] = userId}
+    if type(tsched.currentTask) == "table" and type(tsched.currentTask.id) == "number" then
+      taskInfo.parent = tsched.currentTask.id
+    end
+    table.insert(tsched.tasks, taskInfo)
+    if taskInfo.parent then
+      log.kernel.info(
+        ("[tsched (user)] Created task %s (PID %d) by parent PID %d as UID %d"):format(name, #_PUBLIC.tsched.getTasks(), taskInfo.parent, taskInfo.user)
+      )
+      log.kernel.info(string.format("[tsched (user)] Created task %s (PID %d) as UID %d (no parent found)", name, #_PUBLIC.tsched.getTasks(), taskInfo.user))
+    end
+    return task, taskInfo
+  end
+end
+
+function module.exit() -- Ok bro
+  _PUBLIC.user = nil
+end
+
+return module