CoreFoundation.framework

CoreFoundation.framework
Public Framework
Availabile	1.0 – present
Class Prefix	CF
Headers	[headers.cynder.me]

CoreFoundation is a cross-platform C-based API that provides reference-counted data structures, IPC facilities, run loops, etc. A subset of it is open-sourced as "CF-Lite".

This framework also provides some crucial Objective-C classes such as NSObject, NSString, NSArray, etc.

For one example of using CoreFoundation version numbers, see Updating extensions for iOS 7#Detecting iOS 7.

Versions

Firmware	CoreFoundation version
2.0	478.23
2.1	478.26.1
2.2	478.29
3.0	478.47.7
3.1	478.52
3.2	478.61
4.0	550.32
4.1	550.38.1
4.2	550.52
4.3	550.58.1
5.0	675.00
5.1	690.10
6.0	793.00
6.1	793.00
7.0	847.20
7.1	847.24
8.0	1140.10
8.1	1141.14
8.2	1142.16
8.3	1144.17
8.4	1145.15
9.0	1240.10
9.1	1241.11
9.2	1242.13
9.3	1280.38
10.0	1348.00
10.1	1348.00
10.2	1348.22
10.3	1349.56
11.0	1443.00
11.1	1445.32
11.2	1450.14
11.3	1452.23
11.4	1452.23
12.0	1556.00
12.1	1560.10
12.2	1570.15
12.3	1575.13
12.4	1575.17
12.5	1575.23
13.0	1665.15
13.1	1671.101
13.2	1673.126
13.3	1674.102
13.4	1675.129
13.5	1676.104
13.6	1677.104
13.7	1677.104
14.0	1751.108
14.1	1751.108
14.2	1770.106
14.3	1770.300
14.4	1774.101
14.5	1775.118
14.6	1776.103
14.7	1777.103
14.8	1778.101
15.0	1854
15.1	1855.105
15.2	1856.105
15.3	1856.105
15.4	1858.112

Parameters for CoreFoundation applications

CoreFoundation recognizes the following special command-line arguments:

Flag	Purpose
-AppleLanguages "(lang1, lang2, ...)"	Set the list of languages for localization.

Environment variables

Application built with CoreFoundation will recognize the following environment variables

Name	Default	Purpose
__CF_USER_TEXT_ENCODING	0x1f5:0:0 (mobile) or 0x0:0:0 (root)	Override the default text encoding.
CFFIXED_USER_HOME	NULL	The home directory recognized by CoreFoundation. (Note that the system environment variable HOME is also in use.)
CFPREFERENCES_LOG_EQUAL_VALUES	false	Displays a debug-level log when trying to set an unmodified value in preferences (NSUserDefaults).
CFBundleDisableStringsSharing	false	Do not share *.strings files. (?)
IPHONE_SIMULATOR_DEVICE	iPhone	Used by the internal _CFGetProductName to get the current platform. This environment variable will be checked only when sysctl hw.machine returns a value other than iPhone, iPod or iPad (what about AppleTV?).
CFPropertyListAllowImmutableCollections	false	Force collections (array, dictionary) parsed from property lists to be immutable.
CFUUIDVersionNumber	4	UUID version to use. Only supports 1 or 4.
__CF_DEBUG_EXPANDED_SET CFCharacterSetCheckForExpandedSet	false	Enable check for expanded character sets. When an expanded set is detected, a warning "An expanded CFMutableCharacter has been detected. Recommend to compact with CFCharacterSetCreateCopy" will be printed.
OAKeepAllocationStatistics	false	?
NSObjCMessageLoggingEnabled	no	-
NSZombieEnabled	no	Use "zombies" for easier detection on misusing deallocated objects.
NSDeallocateZombies	no
CFZombieLevel	0
CFStringDisableROM	false	?
CFLOG_FORCE_STDERR	false	Stream error from CFLog to stderr too.
CFNETWORK_LIBRARY_PATH	/System/Library/Frameworks/CFNetwork.framework/CFNetwork	Manually set the path of the CFNetwork binary.
NSAutoreleaseHaltOnFreedObject	no	Kill the process immediately when calling -autorelease on a freed object.
NSAutoreleaseHaltOnNoPool	no	Kill the process immediately when calling -autorelease without a pool.
CFBundleUseDYLD	?	Use low-level dyld(3) functions instead of dlopen(3)/etc. to check if a bundle is loaded or not.
CFProcessPath	-	Manually set the process path.
USER HOME PATH DYLD_IMAGE_SUFFIX TZFILE TZ	-	Various CF functions depend on these info.