From 39562af664f791c0ea153ae12cd2533adcfc6b65 Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Sun, 13 Mar 2016 18:36:47 -0400
Subject: [PATCH] Better output for HandleRead().

---
 apple-ir-control.cc | 40 ++++++++++++++++++++++------------------
 1 file changed, 22 insertions(+), 18 deletions(-)

diff --git a/apple-ir-control.cc b/apple-ir-control.cc
index 8a6f5df..b102895 100644
--- a/apple-ir-control.cc
+++ b/apple-ir-control.cc
@@ -27,15 +27,6 @@ class ScopedIOHIDManager {
 
   ScopedIOHIDManager(const ScopedIOHIDManager&) = delete;
 
-  bool Open() {
-    IOReturn ret = IOHIDManagerOpen(manager_, kIOHIDManagerOptionNone);
-    if (ret != kIOReturnSuccess) {
-      ERROR("Failed to IOHIDManagerOpen: 0x%x", ret);
-      return false;
-    }
-    return true;
-  }
-
   IOHIDManagerRef get() { return manager_; }
 
  private:
@@ -67,9 +58,6 @@ class ScopedCFTypeRef {
 bool IsIRAvailable() {
   ScopedIOHIDManager manager;
   IOHIDManagerSetDeviceMatching(manager.get(), nullptr);
-  if (!manager.Open()) {
-    //return false;
-  }
   ScopedCFTypeRef<CFSetRef> devices(IOHIDManagerCopyDevices(manager.get()));
   if (!devices) {
     ERROR("Failed to IOHIDManagerCopyDevices");
@@ -92,22 +80,37 @@ bool IsIRAvailable() {
   return false;
 }
 
+const char* GetBooleanDescription(CFTypeRef boolean) {
+  if (CFGetTypeID(boolean) != CFBooleanGetTypeID()) {
+    ERROR("Unexpected non-boolean CFTypeRef");
+    abort();
+  }
+  return CFBooleanGetValue(static_cast<CFBooleanRef>(boolean)) ? "on" : "off";
+}
+
 CFTypeRef GetUserPropertyValue() {
   return CFPreferencesCopyValue(kPrefEnabled, kPrefDomain,
       kCFPreferencesAnyUser, kCFPreferencesCurrentHost);
 }
 
-int HandleRead() {
-  CFTypeRef user_prop = GetUserPropertyValue();
-  CFShow(user_prop);
-
+io_iterator_t CreateIOServiceIterator() {
   CFMutableDictionaryRef matching_dict = IOServiceMatching("AppleIRController");
   io_iterator_t iterator;
   kern_return_t kr = IOServiceGetMatchingServices(kIOMasterPortDefault, matching_dict, &iterator);
   if (kr != KERN_SUCCESS) {
     ERROR("Failed to IOServiceGetMatchingServices: 0x%x", kr);
-    return EXIT_FAILURE;
+    return 0;
   }
+  return iterator;
+}
+
+int HandleRead() {
+  CFTypeRef user_prop = GetUserPropertyValue();
+  printf("Userspace property value: %s\n", GetBooleanDescription(user_prop));
+
+  io_iterator_t iterator = CreateIOServiceIterator();
+  if (!iterator)
+    return EXIT_FAILURE;
 
   io_object_t service;
   bool did_find = false;
@@ -125,7 +128,8 @@ int HandleRead() {
 
     ScopedCFTypeRef<CFTypeRef> device_enabled(
         IORegistryEntryCreateCFProperty(service, kPrefEnabled, nullptr, 0));
-    CFShow(device_enabled.get());
+    printf("Kernel property value %s: %s\n",
+        name, GetBooleanDescription(device_enabled.get()));
 
 #if 0
     ScopedCFTypeRef<CFMutableDictionaryRef> props;
-- 
2.22.5