+/*
+ * Copyright (c) 2013 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*
+ * IPMonitorControlPrefs.c
+ * - definitions for accessing IPMonitor control preferences
+ */
+
+/*
+ * Modification History
+ *
+ * January 14, 2013 Dieter Siegmund (dieter@apple)
+ * - created
+ */
+
+#include <SystemConfiguration/SCPreferences.h>
+#include <SystemConfiguration/SCPrivate.h>
+#include <SystemConfiguration/scprefs_observer.h>
+#include <TargetConditionals.h>
+#include "IPMonitorControlPrefs.h"
+
+/*
+ * kIPMonitorControlPrefsID
+ * - identifies the IPMonitor preferences file that contains 'Verbose'
+ */
+#define kIPMonitorControlPrefsIDStr "com.apple.IPMonitor.control.plist"
+#define kIPMonitorControlPrefsID CFSTR(kIPMonitorControlPrefsIDStr)
+
+/*
+ * kVerbose
+ * - indicates whether IPMonitor is verbose or not
+ */
+#define kVerbose CFSTR("Verbose")
+
+static SCPreferencesRef S_prefs;
+static IPMonitorControlPrefsCallBack S_callback;
+
+static SCPreferencesRef
+IPMonitorControlPrefsGet(void)
+{
+ if (S_prefs == NULL) {
+ IPMonitorControlPrefsInit(NULL, NULL);
+ }
+ return (S_prefs);
+}
+
+static void
+prefs_changed(__unused void * arg)
+{
+ /* get the current value */
+ if (S_callback != NULL) {
+ (*S_callback)(S_prefs);
+ }
+ return;
+}
+
+#if TARGET_OS_IPHONE
+/*
+ * kIPMonitorControlManangedPrefsID
+ * - identifies the location of the managed preferences file
+ */
+#define kManagedPrefsDirStr "/Library/Managed Preferences/mobile/"
+#define kIPMonitorControlManagedPrefsID CFSTR(kManagedPrefsDirStr \
+ kIPMonitorControlPrefsIDStr)
+static SCPreferencesRef S_managed_prefs;
+
+static SCPreferencesRef
+IPMonitorControlManagedPrefsGet(void)
+{
+ if (S_managed_prefs == NULL) {
+ S_managed_prefs
+ = SCPreferencesCreate(NULL, CFSTR("IPMonitorControlPrefs"),
+ kIPMonitorControlManagedPrefsID);
+ }
+ return (S_managed_prefs);
+}
+
+static void
+enable_prefs_observer(CFRunLoopRef runloop)
+{
+ CFRunLoopSourceContext context;
+ dispatch_block_t handler;
+ dispatch_queue_t queue;
+ CFRunLoopSourceRef source;
+
+ bzero(&context, sizeof(context));
+ context.perform = prefs_changed;
+ source = CFRunLoopSourceCreate(kCFAllocatorDefault, 0, &context);
+ CFRunLoopAddSource(runloop, source, kCFRunLoopCommonModes);
+ queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+ handler = ^{
+ if (source != NULL) {
+ CFRunLoopSourceSignal(source);
+ if (runloop != NULL) {
+ CFRunLoopWakeUp(runloop);
+ }
+ };
+ };
+ _scprefs_observer_watch(scprefs_observer_type_global,
+ kIPMonitorControlPrefsIDStr,
+ queue, handler);
+ return;
+}
+
+#else /* TARGET_OS_IPHONE */
+
+static void
+enable_prefs_observer(CFRunLoopRef runloop)
+{
+ return;
+}
+
+#endif /* TARGET_OS_IPHONE */
+
+static void
+IPMonitorControlPrefsChanged(SCPreferencesRef prefs,
+ SCPreferencesNotification type,
+ void * info)
+{
+ prefs_changed(NULL);
+ return;
+}
+
+__private_extern__ SCPreferencesRef
+IPMonitorControlPrefsInit(CFRunLoopRef runloop,
+ IPMonitorControlPrefsCallBack callback)
+{
+ S_prefs = SCPreferencesCreate(NULL, CFSTR("IPMonitorControlPrefs"),
+ kIPMonitorControlPrefsID);
+ if (runloop != NULL && callback != NULL) {
+ S_callback = callback;
+ SCPreferencesSetCallback(S_prefs, IPMonitorControlPrefsChanged, NULL);
+ SCPreferencesScheduleWithRunLoop(S_prefs, runloop,
+ kCFRunLoopCommonModes);
+ enable_prefs_observer(runloop);
+ }
+ return (S_prefs);
+}
+
+static Boolean
+IPMonitorControlPrefsSave(void)
+{
+ Boolean saved = FALSE;
+
+ if (S_prefs != NULL) {
+ saved = SCPreferencesCommitChanges(S_prefs);
+ SCPreferencesSynchronize(S_prefs);
+ }
+ return (saved);
+}
+
+static CFBooleanRef
+prefs_get_boolean(CFStringRef key)
+{
+ CFBooleanRef b = NULL;
+
+#if TARGET_OS_IPHONE
+ b = SCPreferencesGetValue(IPMonitorControlManagedPrefsGet(), key);
+ b = isA_CFBoolean(b);
+#endif /* TARGET_OS_IPHONE */
+ if (b == NULL) {
+ b = SCPreferencesGetValue(IPMonitorControlPrefsGet(), key);
+ b = isA_CFBoolean(b);
+ }
+ return (b);
+}
+
+static void
+prefs_set_boolean(CFStringRef key, CFBooleanRef b)
+{
+ SCPreferencesRef prefs = IPMonitorControlPrefsGet();
+
+ if (prefs != NULL) {
+ if (isA_CFBoolean(b) == NULL) {
+ SCPreferencesRemoveValue(prefs, key);
+ }
+ else {
+ SCPreferencesSetValue(prefs, key, b);
+ }
+ }
+ return;
+}
+
+static void
+IPMonitorControlPrefsRefresh(void)
+{
+ if (S_prefs != NULL) {
+ SCPreferencesSynchronize(S_prefs);
+ }
+#if TARGET_OS_IPHONE
+ if (S_managed_prefs != NULL) {
+ SCPreferencesSynchronize(S_managed_prefs);
+ }
+#endif /* TARGET_OS_IPHONE */
+ return;
+}
+
+/**
+ ** Get
+ **/
+__private_extern__ Boolean
+IPMonitorControlPrefsIsVerbose(void)
+{
+ CFBooleanRef b;
+ Boolean verbose = FALSE;
+
+ b = prefs_get_boolean(kVerbose);
+ if (b != NULL) {
+ verbose = CFBooleanGetValue(b);
+ }
+ /* flush the backing store */
+ IPMonitorControlPrefsRefresh();
+ return (verbose);
+}
+
+/**
+ ** Set
+ **/
+__private_extern__ Boolean
+IPMonitorControlPrefsSetVerbose(Boolean verbose)
+{
+ if (verbose == FALSE) {
+ prefs_set_boolean(kVerbose, NULL);
+ }
+ else {
+ prefs_set_boolean(kVerbose, kCFBooleanTrue);
+ }
+ return (IPMonitorControlPrefsSave());
+}
+
+#ifdef TEST_IPMONITORCONTROLPREFS
+int
+main(int argc, char * argv[])
+{
+ Boolean need_usage = FALSE;
+ Boolean success = FALSE;
+
+ if (argc < 2) {
+ need_usage = TRUE;
+ }
+ else if (strcasecmp(argv[1], "on") == 0) {
+ success = IPMonitorControlPrefsSetVerbose(TRUE);
+ }
+ else if (strcasecmp(argv[1], "off") == 0) {
+ success = IPMonitorControlPrefsSetVerbose(FALSE);
+ }
+ else {
+ need_usage = TRUE;
+ }
+ if (need_usage) {
+ fprintf(stderr, "usage: %s ( on | off )\n", argv[0]);
+ exit(1);
+ }
+ if (success == FALSE) {
+ fprintf(stderr, "failed to save prefs\n");
+ exit(2);
+ }
+ exit(0);
+ return (0);
+}
+
+#endif /* TEST_IPMONITORCONTROLPREFS */
projects / apple / configd.git / blobdiff