1 files changed, 85 insertions, 0 deletions
diff --git a/internal/exec/tsch/task.go b/internal/exec/tsch/task.go
new file mode 100644
index 0000000..928d029
--- /dev/null
+++ b/internal/exec/tsch/task.go
@@ -0,0 +1,85 @@
+package tschexec
+
+import (
+  "fmt"
+  "regexp"
+  "time"
+)
+
+var (
+  TaskPathRegex = regexp.MustCompile(`^\\[^ :/\\][^:/]*$`)
+  TaskNameRegex = regexp.MustCompile(`^[^ :/\\][^:/\\]*$`)
+)
+
+// newSettings just creates a settings instance with the necessary values + a few dynamic ones
+func newSettings(terminate, onDemand, startWhenAvailable bool) *settings {
+  return &settings{
+    MultipleInstancesPolicy: "IgnoreNew",
+    AllowHardTerminate:      terminate,
+    IdleSettings: idleSettings{
+      StopOnIdleEnd: true,
+      RestartOnIdle: false,
+    },
+    AllowStartOnDemand: onDemand,
+    Enabled:            true,
+    Hidden:             true,
+    Priority:           7, // a pretty standard value for scheduled tasks
+    StartWhenAvailable: startWhenAvailable,
+  }
+}
+
+// newTask creates a task with any static values filled
+func newTask(se *settings, pr []principal, tr triggers, cmd, args string) *task {
+  if se == nil {
+    se = newSettings(true, true, false)
+  }
+  if pr == nil || len(pr) == 0 {
+    pr = []principal{
+      {
+        ID:       "1",
+        UserID:   "S-1-5-18",
+        RunLevel: "HighestAvailable",
+      },
+    }
+  }
+  return &task{
+    TaskVersion:   "1.2",
+    TaskNamespace: "http://schemas.microsoft.com/windows/2004/02/mit/task",
+    Triggers:      tr,
+    Principals:    principals{Principals: pr},
+    Settings:      *se,
+    Actions: actions{
+      Context: pr[0].ID,
+      Exec: []actionExec{
+        {
+          Command:   cmd,
+          Arguments: args,
+        },
+      },
+    },
+  }
+}
+
+// xmlDuration is a *very* simple implementation of xs:duration - only accepts +seconds
+func xmlDuration(dur time.Duration) string {
+  if s := int(dur.Seconds()); s >= 0 {
+    return fmt.Sprintf(`PT%dS`, s)
+  }
+  return `PT0S`
+}
+
+// ValidateTaskName will validate the provided task name according to https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/fa8809c8-4f0f-4c6d-994a-6c10308757c1
+func ValidateTaskName(taskName string) error {
+  if !TaskNameRegex.MatchString(taskName) {
+    return fmt.Errorf("invalid task name: %s", taskName)
+  }
+  return nil
+}
+
+// ValidateTaskPath will validate the provided task path according to https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/fa8809c8-4f0f-4c6d-994a-6c10308757c1
+func ValidateTaskPath(taskPath string) error {
+  if !TaskPathRegex.MatchString(taskPath) {
+    return fmt.Errorf("invalid task path: %s", taskPath)
+  }
+  return nil
+}