static void
updateSCDynamicStore(SCPreferencesRef prefs)
{
CFStringRef current = NULL;
CFDateRef date = NULL;
CFMutableDictionaryRef dict = NULL;
CFDictionaryRef global = NULL;
CFIndex i;
CFArrayRef keys;
CFIndex n;
CFStringRef pattern;
CFMutableArrayRef patterns;
CFDictionaryRef set = NULL;
/*
* initialize old preferences, new preferences, an array
* of keys which have not changed, and an array of keys
* to be removed (cleaned up).
*/
patterns = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
pattern = CFStringCreateWithFormat(NULL,
NULL,
CFSTR("^%@.*"),
kSCDynamicStoreDomainSetup);
CFArrayAppendValue(patterns, pattern);
dict = (CFMutableDictionaryRef)SCDynamicStoreCopyMultiple(store, NULL, patterns);
CFRelease(patterns);
CFRelease(pattern);
if (dict) {
currentPrefs = CFDictionaryCreateMutableCopy(NULL, 0, dict);
CFRelease(dict);
} else {
currentPrefs = CFDictionaryCreateMutable(NULL,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
}
unchangedPrefsKeys = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
i = CFDictionaryGetCount(currentPrefs);
if (i > 0) {
const void **currentKeys;
CFArrayRef array;
currentKeys = CFAllocatorAllocate(NULL, i * sizeof(CFStringRef), 0);
CFDictionaryGetKeysAndValues(currentPrefs, currentKeys, NULL);
array = CFArrayCreate(NULL, currentKeys, i, &kCFTypeArrayCallBacks);
removedPrefsKeys = CFArrayCreateMutableCopy(NULL, 0, array);
CFRelease(array);
CFAllocatorDeallocate(NULL, currentKeys);
} else {
removedPrefsKeys = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
}
/*
* The "newPrefs" dictionary will contain the new / updated
* configuration which will be written to the configuration cache.
*/
newPrefs = CFDictionaryCreateMutable(NULL,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
/*
* create status dictionary associated with current configuration
* information including:
* - current set "name" to cache
* - time stamp indicating when the cache preferences were
* last updated.
*/
dict = CFDictionaryCreateMutable(NULL,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
date = CFDateCreate(NULL, CFAbsoluteTimeGetCurrent());
/*
* load preferences
*/
keys = SCPreferencesCopyKeyList(prefs);
if ((keys == NULL) || (CFArrayGetCount(keys) == 0)) {
SCLog(TRUE, LOG_NOTICE, CFSTR("updateConfiguration(): no preferences."));
goto done;
}
/*
* get "global" system preferences
*/
global = SCPreferencesGetValue(prefs, kSCPrefSystem);
if (!global) {
/* if no global preferences are defined */
goto getSet;
}
if (!isA_CFDictionary(global)) {
SCLog(TRUE, LOG_ERR,
CFSTR("updateConfiguration(): %@ is not a dictionary."),
kSCPrefSystem);
goto done;
}
/* flatten property list */
flatten(prefs, CFSTR("/"), global);
getSet :
/*
* get current set name
*/
current = SCPreferencesGetValue(prefs, kSCPrefCurrentSet);
if (!current) {
/* if current set not defined */
goto done;
}
if (!isA_CFString(current)) {
SCLog(TRUE, LOG_ERR,
CFSTR("updateConfiguration(): %@ is not a string."),
kSCPrefCurrentSet);
goto done;
}
/*
* get current set
*/
set = SCPreferencesPathGetValue(prefs, current);
if (!set) {
/* if error with path */
SCLog(TRUE, LOG_ERR,
CFSTR("%@ value (%@) not valid"),
kSCPrefCurrentSet,
current);
goto done;
}
if (!isA_CFDictionary(set)) {
SCLog(TRUE, LOG_ERR,
CFSTR("updateConfiguration(): %@ is not a dictionary."),
current);
goto done;
}
/* flatten property list */
flatten(prefs, CFSTR("/"), set);
CFDictionarySetValue(dict, kSCDynamicStorePropSetupCurrentSet, current);
done :
/* add last updated time stamp */
CFDictionarySetValue(dict, kSCDynamicStorePropSetupLastUpdated, date);
/* add Setup: key */
CFDictionarySetValue(newPrefs, kSCDynamicStoreDomainSetup, dict);
/* compare current and new preferences */
CFDictionaryApplyFunction(newPrefs, updateCache, NULL);
/* remove those keys which have not changed from the update */
n = CFArrayGetCount(unchangedPrefsKeys);
for (i = 0; i < n; i++) {
CFStringRef key;
key = CFArrayGetValueAtIndex(unchangedPrefsKeys, i);
CFDictionaryRemoveValue(newPrefs, key);
}
/* Update the dynamic store */
#ifndef MAIN
if (!SCDynamicStoreSetMultiple(store, newPrefs, removedPrefsKeys, NULL)) {
SCLog(TRUE, LOG_ERR,
CFSTR("SCDynamicStoreSetMultiple() failed: %s"),
SCErrorString(SCError()));
}
#else // !MAIN
SCLog(TRUE, LOG_NOTICE,
CFSTR("SCDynamicStore\nset: %@\nremove: %@\n"),
newPrefs,
removedPrefsKeys);
#endif // !MAIN
CFRelease(currentPrefs);
CFRelease(newPrefs);
CFRelease(unchangedPrefsKeys);
CFRelease(removedPrefsKeys);
if (dict) CFRelease(dict);
if (date) CFRelease(date);
if (keys) CFRelease(keys);
return;
}
static Boolean
establishNewPreferences()
{
CFBundleRef bundle;
SCNetworkSetRef current = NULL;
CFStringRef new_model;
Boolean ok = FALSE;
int sc_status = kSCStatusFailed;
SCNetworkSetRef set = NULL;
CFStringRef setName = NULL;
Boolean updated = FALSE;
while (TRUE) {
ok = SCPreferencesLock(prefs, TRUE);
if (ok) {
break;
}
sc_status = SCError();
if (sc_status == kSCStatusStale) {
SCPreferencesSynchronize(prefs);
} else {
SCLog(TRUE, LOG_ERR,
CFSTR("Could not acquire network configuration lock: %s"),
SCErrorString(sc_status));
return FALSE;
}
}
/* Ensure that the preferences has the new model */
new_model = _SC_hw_model(FALSE);
/* Need to regenerate the new configuration for new model */
if (new_model != NULL) {
CFStringRef old_model;
old_model = SCPreferencesGetValue(prefs, MODEL);
if ((old_model != NULL) && !_SC_CFEqual(old_model, new_model)) {
CFIndex count;
CFIndex index;
CFArrayRef keys;
keys = SCPreferencesCopyKeyList(prefs);
count = (keys != NULL) ? CFArrayGetCount(keys) : 0;
// if new hardware
for (index = 0; index < count; index++) {
CFStringRef existing_key;
existing_key = CFArrayGetValueAtIndex(keys, index);
if (isA_CFString(existing_key) != NULL) {
CFStringRef new_key;
CFPropertyListRef value;
/* If it already contains a Model
or if it already contains a MODEL:KEY key skip it*/
if (CFEqual(existing_key, MODEL)
|| CFStringFind(existing_key, CFSTR(":"), 0).location
!= kCFNotFound) {
continue;
}
value = SCPreferencesGetValue(prefs, existing_key);
/* Create a new key as OLD_MODEL:OLD_KEY */
new_key = CFStringCreateWithFormat(NULL, NULL, CFSTR("%@:%@"),
old_model, existing_key);
SCPreferencesSetValue(prefs, new_key, value);
if (!CFEqual(existing_key, kSCPrefSystem)) {
/* preserve existing host names */
SCPreferencesRemoveValue(prefs, existing_key);
}
CFRelease(new_key);
}
}
if (keys != NULL) {
CFRelease(keys);
}
}
/* Set the new model */
SCPreferencesSetValue(prefs, MODEL, new_model);
}
current = SCNetworkSetCopyCurrent(prefs);
if (current != NULL) {
set = current;
}
if (set == NULL) {
set = SCNetworkSetCreate(prefs);
if (set == NULL) {
ok = FALSE;
sc_status = SCError();
goto done;
}
bundle = _SC_CFBundleGet();
if (bundle != NULL) {
setName = CFBundleCopyLocalizedString(bundle,
CFSTR("DEFAULT_SET_NAME"),
CFSTR("Automatic"),
NULL);
}
ok = SCNetworkSetSetName(set, (setName != NULL) ? setName : CFSTR("Automatic"));
if (!ok) {
sc_status = SCError();
goto done;
}
ok = SCNetworkSetSetCurrent(set);
if (!ok) {
sc_status = SCError();
goto done;
}
}
ok = SCNetworkSetEstablishDefaultConfiguration(set);
if (!ok) {
sc_status = SCError();
goto done;
}
done :
if (ok) {
ok = SCPreferencesCommitChanges(prefs);
if (ok) {
SCLog(TRUE, LOG_NOTICE, CFSTR("New network configuration saved"));
updated = TRUE;
} else {
sc_status = SCError();
if (sc_status == EROFS) {
/* a read-only fileysstem is OK */
ok = TRUE;
/* ... but we don't want to synchronize */
rofs = TRUE;
}
}
/* apply (committed or temporary/read-only) changes */
(void) SCPreferencesApplyChanges(prefs);
} else if ((current == NULL) && (set != NULL)) {
(void) SCNetworkSetRemove(set);
}
if (!ok) {
SCLog(TRUE, LOG_ERR,
CFSTR("Could not establish network configuration: %s"),
SCErrorString(sc_status));
}
(void)SCPreferencesUnlock(prefs);
if (setName != NULL) CFRelease(setName);
if (set != NULL) CFRelease(set);
return updated;
}
static void LeakTest(TestFunc tester)
// Given a test name and a pointer to a test function,
// this routine calls the test function repeatedly to check
// for SCF preferences reference count leaks.
{
OSStatus err;
SCPreferencesRef prefsRef;
CFArrayRef allKeys;
int i;
SInt32 startCount;
SInt32 endCount;
// This is kinda cheesy. We need to use the same SCPreferencesRef
// that MoreSCF uses because otherwise we can't see the reference
// count changes done by MoreSCF. Ideally, we wouldn't want to run
// within a MoreSCOpen/MoreSCClose pair because then our changes
// aren't necessarily being committed to the database. However,
// given the current MoreSCF architecture, where the SCPreferenceRef
// is only valid inside the MoreSCOpen/MoreSCClose pair, that's
// exactly what we have to do.
allKeys = NULL;
err = MoreSCOpen(false, false);
if (err == noErr) {
prefsRef = MoreSCGetSCPreferencesRef();
}
// Now get a copy of the array of all keys in the database.
// We make this copy using CFPropertyListCreateDeepCopy so we
// know that it's completely independent of the SCF.
if (err == noErr) {
CFArrayRef allKeysOrig;
allKeysOrig = NULL;
allKeysOrig = SCPreferencesCopyKeyList(prefsRef);
if (allKeysOrig == NULL) {
err = SCError();
}
if (err == noErr) {
allKeys = (CFArrayRef) CFPropertyListCreateDeepCopy(NULL, allKeysOrig, kCFPropertyListMutableContainersAndLeaves); // C++ requires cast
if (allKeys == NULL) {
err = coreFoundationUnknownErr;
}
}
CFQRelease(allKeysOrig);
}
// Now do the reference counting test. Call the tester function
// a few times to allow the refcounts to stabilise. Then get
// a summ of all the nodes in all of the keys in SCF. Then
// run the test a 10 more times and get another count. If
// the counts are different, we're in trouble.
if (err == noErr) {
for (i = 0; i < 3; i++) {
tester();
}
startCount = TotalAllRefCounts(prefsRef, allKeys);
for (i = 0; i < 10; i++) {
tester();
}
endCount = TotalAllRefCounts(prefsRef, allKeys);
if (startCount != endCount) {
CFIndex keyCount;
CFIndex keyIndex;
fprintf(stderr, "*** Leaked %ld reference counts.\n", endCount - startCount);
keyCount = CFArrayGetCount(allKeys);
for (keyIndex = 0; keyIndex < keyCount; keyIndex++) {
CFPropertyListRef thisPref;
// The commented out code is only needed when you're actively
// trying to track down a leak. Given that leaks are rare
// I decided against making a proper architecture for this.
// Just uncomment the code and modify it appropriately.
startCount = 0;
thisPref = SCPreferencesGetValue(prefsRef, (CFStringRef) CFArrayGetValueAtIndex(allKeys, keyIndex)); // C++ requires cast
CFQPropertyListDeepApplyFunction(thisPref, RefCounter, (void *) &startCount );
// if (keyIndex == 0) {
// fprintf(stderr, "*** BEFORE ***\n");
// PrintPropertyList(thisPref);
// }
tester();
endCount = 0;
thisPref = SCPreferencesGetValue(prefsRef, (CFStringRef) CFArrayGetValueAtIndex(allKeys, keyIndex)); // C++ requires cast
CFQPropertyListDeepApplyFunction(thisPref, RefCounter, (void *) &endCount );
// if (keyIndex == 0) {
// fprintf(stderr, "*** AFTER ***\n");
// PrintPropertyList(thisPref);
// }
if (startCount != endCount) {
fprintf(stderr, "*** Leaked %ld reference counts in set number %ld\n", endCount - startCount, keyIndex);
CFShow(CFArrayGetValueAtIndex(allKeys, keyIndex));
}
}
}
}
MoreSCClose(&err, false);
CFQRelease(allKeys);
if (err != noErr) {
fprintf(stderr, "*** Failed with error %ld!\n", err);
}
}
