/*
- * Copyright (c) 2016 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2016 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <System/machine/cpu_capabilities.h>
#include <os/assumes.h>
+#include <os/bsd.h>
+#include <os/stdlib.h>
#include <os/variant_private.h>
+/*
+ * Lists all properties overridden by an empty file
+ */
+#define ALL_OVERRIDES_STR "content,diagnostics,ui,security"
+
enum variant_property {
- VP_ALL = 0,
VP_CONTENT,
VP_DIAGNOSTICS,
VP_UI,
S_YES = 3
};
+typedef struct {
+ const char *variant;
+ bool (*function)(const char*);
+} variant_check_mapping;
+
static bool
status2bool(enum check_status status) {
switch (status) {
return false;
case S_YES:
return true;
+ case S_UNKNOWN:
default:
os_crash("os_variant had unexpected status");
}
#define INTERNAL_SETTINGS_PATH "/AppleInternal/Library/PreferenceBundles/Internal Settings.bundle"
#else
#define INTERNAL_DIAGS_PROFILE_PATH "/var/db/ConfigurationProfiles/Settings/com.apple.InternalDiagnostics.plist"
+#define FACTORY_CONTENT_PATH "/System/Library/CoreServices/AppleFactoryVariant.plist"
+#define BASE_SYSTEM_CONTENT_PATH "/System/Library/BaseSystem"
#endif
#if !TARGET_OS_SIMULATOR
static enum check_status can_has_debugger = S_UNKNOWN;
#if TARGET_OS_IPHONE
static enum check_status internal_release_type = S_UNKNOWN;
+static enum check_status factory_release_type = S_UNKNOWN;
+static enum check_status darwin_release_type = S_UNKNOWN;
+static enum check_status recovery_release_type = S_UNKNOWN;
+static enum check_status development_kernel = S_UNKNOWN;
#else // TARGET_OS_IPHONE
static enum check_status internal_diags_profile = S_UNKNOWN;
+static enum check_status factory_content = S_UNKNOWN;
+static enum check_status base_system_content = S_UNKNOWN;
#endif // TARGET_OS_IPHONE
#endif // !TARGET_OS_SIMULATOR
+static enum check_status is_ephemeral = S_UNKNOWN;
static bool disabled_status[VP_MAX] = {};
if (test_string != NULL) {
/* used for unit tests */
- override_str = strdup(test_string);
+ override_str = os_strdup(test_string);
} else {
if (access(VAR_FILE_LEGACY, F_OK) == 0) {
- goto disable_all;
+ override_str = os_strdup(ALL_OVERRIDES_STR);
} else if (access(VAR_FILE_OVERRIDE, F_OK) != 0) {
return;
}
override_str = _read_file(VAR_FILE_OVERRIDE, NULL);
}
- if (override_str == NULL) goto disable_all;
+ if (override_str == NULL) {
+ override_str = os_strdup(ALL_OVERRIDES_STR);
+ }
char *token, *string = override_str;
while ((token = strsep(&string, ",\n")) != NULL) {
free(override_str);
return;
-
-disable_all:
- for (int i = 0; i < VP_MAX; i++) {
- disabled_status[i] = true;
- }
#endif //!TARGET_OS_SIMULATOR
}
}
#endif // !TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
+#if TARGET_OS_OSX
+static bool _check_factory_content(void)
+{
+ if (factory_content == S_UNKNOWN) {
+ const char * path = FACTORY_CONTENT_PATH;
+ factory_content = (access(path, F_OK) == 0) ? S_YES : S_NO;
+ }
+ return status2bool(factory_content);
+}
+#endif // TARGET_OS_OSX
+
#if TARGET_OS_IPHONE
+#if !TARGET_OS_SIMULATOR
+static bool _parse_system_version_plist(void)
+{
+ xpc_object_t system_version_plist = read_plist(SYSTEM_VERSION_PLIST_PATH);
+ if (!system_version_plist) {
+ return false;
+ }
+
+ const char *release_type =
+ xpc_dictionary_get_string(system_version_plist,
+ SYSTEM_VERSION_PLIST_KEY);
+
+ if (release_type == NULL) {
+ /*
+ * Confusingly, customer images are just completely missing this key.
+ */
+ internal_release_type = S_NO;
+ factory_release_type = S_NO;
+ darwin_release_type = S_NO;
+ recovery_release_type = S_NO;
+ } else if (strcmp(release_type, "NonUI") == 0) {
+ factory_release_type = S_YES;
+ internal_release_type = S_YES;
+ darwin_release_type = S_NO;
+ recovery_release_type = S_NO;
+ } else {
+ factory_release_type = S_NO;
+ internal_release_type = (strstr(release_type, "Internal") != NULL) ? S_YES : S_NO;
+ darwin_release_type = (strstr(release_type, "Darwin") != NULL) ? S_YES : S_NO;
+ recovery_release_type = (strstr(release_type, "Recovery") != NULL) ? S_YES : S_NO;
+ }
+
+ xpc_release(system_version_plist);
+
+ return true;
+}
+#endif //!TARGET_OS_SIMULATOR
+
/*
* This set of criteria was taken from copyInternalBuild in MobileGestalt.c
*/
return _check_internal_content();
#else // TARGET_OS_SIMULATOR
if (internal_release_type == S_UNKNOWN) {
- xpc_object_t system_version_plist = read_plist(SYSTEM_VERSION_PLIST_PATH);
- if (system_version_plist) {
- const char *release_type =
- xpc_dictionary_get_string(system_version_plist,
- SYSTEM_VERSION_PLIST_KEY);
-
- if (release_type == NULL) {
- /*
- * Confusingly, customer images are just completely missing this key.
- */
- internal_release_type = S_NO;
- } else if (strcmp(release_type, "Internal") == 0 ||
- strcmp(release_type, "Lite Internal") == 0 ||
- strcmp(release_type, "NonUI") == 0) {
- internal_release_type = S_YES;
- } else {
- internal_release_type = S_NO;
- }
-
- xpc_release(system_version_plist);
- } else {
+ if (!_parse_system_version_plist()) {
internal_release_type = (access(INTERNAL_SETTINGS_PATH, F_OK) == 0) ? S_YES : S_NO;
}
}
#endif // TARGET_OS_SIMULATOR
}
-#else
+static bool _check_factory_release_type(void)
+{
+#if TARGET_OS_SIMULATOR
+ return false;
+#else // TARGET_OS_SIMULATOR
+ if (factory_release_type == S_UNKNOWN) {
+ if (!_parse_system_version_plist()) {
+ factory_release_type = S_NO;
+ }
+ }
+
+ return status2bool(factory_release_type);
+#endif // TARGET_OS_SIMULATOR
+}
+
+static bool _check_darwin_release_type(void)
+{
+#if TARGET_OS_SIMULATOR
+ return false;
+#else // TARGET_OS_SIMULATOR
+ if (darwin_release_type == S_UNKNOWN) {
+ if (!_parse_system_version_plist()) {
+ darwin_release_type = S_NO;
+ }
+ }
-static bool _check_internal_diags_profile() {
- static enum check_status internal_diags_profile = S_UNKNOWN;
+ return status2bool(darwin_release_type);
+#endif // TARGET_OS_SIMULATOR
+}
+static bool _check_recovery_release_type(void)
+{
+#if TARGET_OS_SIMULATOR
+ return false;
+#else // TARGET_OS_SIMULATOR
+ if (recovery_release_type == S_UNKNOWN) {
+ if (!_parse_system_version_plist()) {
+ recovery_release_type = S_NO;
+ }
+ }
+
+ return status2bool(recovery_release_type);
+#endif // TARGET_OS_SIMULATOR
+}
+
+#else // TARGET_OS_IPHONE
+
+static bool _check_internal_diags_profile(void)
+{
if (internal_diags_profile == S_UNKNOWN) {
xpc_object_t profile_settings = read_plist(INTERNAL_DIAGS_PROFILE_PATH);
if (profile_settings) {
return status2bool(internal_diags_profile);
}
+static bool _check_base_system_content(void)
+{
+ if (base_system_content == S_UNKNOWN) {
+ const char * path = BASE_SYSTEM_CONTENT_PATH;
+ base_system_content = (access(path, F_OK) == 0) ? S_YES : S_NO;
+ }
+ return status2bool(base_system_content);
+}
+
#endif
+#if !TARGET_OS_SIMULATOR
static bool _check_can_has_debugger(void)
{
-#if TARGET_OS_SIMULATOR
- return _check_internal_content();
-#else
if (can_has_debugger == S_UNKNOWN) {
#if TARGET_OS_IPHONE
can_has_debugger = *((uint32_t *)_COMM_PAGE_DEV_FIRM) ? S_YES : S_NO;
#endif
}
return status2bool(can_has_debugger);
-#endif // TARGET_OS_SIMULATOR
}
+#endif // !TARGET_OS_SIMULATOR
+
+#if TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
+static bool _check_development_kernel(void)
+{
+ if (development_kernel == S_UNKNOWN) {
+ /*
+ * Whitelist values from SUPPORTED_KERNEL_CONFIGS.
+ */
+ char *osbuildconfig = NULL;
+ size_t osbuildconfig_sz = 0;
+ errno_t err = sysctlbyname_get_data_np("kern.osbuildconfig", (void **)&osbuildconfig, &osbuildconfig_sz);
+ if (err == 0) {
+ if (strcmp(osbuildconfig, "development") == 0 ||
+ strcmp(osbuildconfig, "debug") == 0 ||
+ strcmp(osbuildconfig, "profile") == 0 ||
+ strcmp(osbuildconfig, "kasan") == 0) {
+ development_kernel = S_YES;
+ }
+ }
+ free(osbuildconfig);
+
+ if (development_kernel == S_UNKNOWN) {
+ development_kernel = S_NO;
+ }
+ }
+ return status2bool(development_kernel);
+}
+#endif // TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR
// For unit tests
#ifndef VARIANT_SKIP_EXPORTED
return false;
}
+#if TARGET_OS_SIMULATOR
+ return _check_internal_content();
+#elif TARGET_OS_IPHONE
+ return _check_can_has_debugger() || _check_development_kernel();
+#else
return _check_can_has_debugger();
+#endif
+}
+
+bool
+os_variant_has_factory_content(const char * __unused subsystem)
+{
+#if TARGET_OS_IPHONE
+ return _check_factory_release_type();
+#else
+ return _check_factory_content();
+#endif
+}
+
+bool
+os_variant_is_darwinos(const char * __unused subsystem)
+{
+
+#if TARGET_OS_IPHONE
+ return _check_darwin_release_type();
+#else
+ return false;
+#endif
+}
+
+bool
+os_variant_is_recovery(const char * __unused subsystem)
+{
+#if TARGET_OS_IPHONE
+ return _check_recovery_release_type();
+#else
+ return _check_base_system_content();
+#endif
+}
+
+bool
+os_variant_uses_ephemeral_storage(const char * __unused subsystem)
+{
+ if (is_ephemeral == S_UNKNOWN) {
+ uint32_t buffer = 0;
+ size_t buffer_size = sizeof(buffer);
+
+ sysctlbyname("hw.ephemeral_storage", (void *)&buffer, &buffer_size, NULL, 0);
+
+ is_ephemeral = (buffer != 0) ? S_YES : S_NO;
+ }
+
+ return status2bool(is_ephemeral);
+}
+
+bool
+os_variant_check(const char * __unused subsystem, const char *variant)
+{
+ static const variant_check_mapping map[] = {
+ {.variant = "HasInternalContent", .function = os_variant_has_internal_content},
+ {.variant = "HasInternalDiagnostics", .function = os_variant_has_internal_diagnostics},
+ {.variant = "HasInternalUI", .function = os_variant_has_internal_ui},
+ {.variant = "AllowsInternalSecurityPolicies", .function = os_variant_allows_internal_security_policies},
+ {.variant = "HasFactoryContent", .function = os_variant_has_factory_content},
+ {.variant = "IsDarwinOS", .function = os_variant_is_darwinos},
+ {.variant = "UsesEphemeralStorage", .function = os_variant_uses_ephemeral_storage},
+ {.variant = "IsRecovery", .function = os_variant_is_recovery},
+ {.variant = NULL, .function = NULL}
+ };
+ variant_check_mapping *current = (variant_check_mapping *)map;
+
+ while (current->variant) {
+ if (0 == strncasecmp(current->variant, variant, strlen(current->variant))) {
+ return current->function("");
+ }
+ current ++;
+ }
+
+ return false;
}
#endif // VARIANT_SKIP_EXPORTED
SFP_INTERNAL_CONTENT = 0,
SFP_CAN_HAS_DEBUGGER = 1,
SFP_INTERNAL_RELEASE_TYPE = 2,
- SFP_INTERNAL_DIAGS_PROFILE = 3
+ SFP_INTERNAL_DIAGS_PROFILE = 3,
+ SFP_FACTORY_CONTENT = 4,
+ SFP_FACTORY_RELEASE_TYPE = 5,
+ SFP_DARWINOS_RELEASE_TYPE = 6,
+ SFP_EPHEMERAL_VOLUME = 7,
+ SFP_RECOVERY_RELEASE_TYPE = 8,
+ SFP_BASE_SYSTEM_CONTENT = 9,
+ SFP_DEVELOPMENT_KERNEL = 10,
};
#if !TARGET_OS_SIMULATOR
if (can_has_debugger != S_UNKNOWN)
res |= can_has_debugger << SFP_CAN_HAS_DEBUGGER * STATUS_BIT_WIDTH;
+ (void)os_variant_uses_ephemeral_storage("");
+ if (is_ephemeral != S_UNKNOWN)
+ res |= is_ephemeral << SFP_EPHEMERAL_VOLUME * STATUS_BIT_WIDTH;
+
#if TARGET_OS_IPHONE
_check_internal_release_type();
if (internal_release_type != S_UNKNOWN)
res |= internal_release_type << SFP_INTERNAL_RELEASE_TYPE * STATUS_BIT_WIDTH;
+
+ _check_factory_release_type();
+ if (factory_release_type != S_UNKNOWN)
+ res |= factory_release_type << SFP_FACTORY_RELEASE_TYPE * STATUS_BIT_WIDTH;
+
+ _check_darwin_release_type();
+ if (darwin_release_type != S_UNKNOWN)
+ res |= darwin_release_type << SFP_DARWINOS_RELEASE_TYPE * STATUS_BIT_WIDTH;
+
+ _check_recovery_release_type();
+ if (recovery_release_type != S_UNKNOWN)
+ res |= recovery_release_type << SFP_RECOVERY_RELEASE_TYPE * STATUS_BIT_WIDTH;
+
+ _check_development_kernel();
+ if (development_kernel != S_UNKNOWN)
+ res |= development_kernel << SFP_DEVELOPMENT_KERNEL * STATUS_BIT_WIDTH;
#else
_check_internal_diags_profile();
if (internal_diags_profile != S_UNKNOWN)
res |= internal_diags_profile << SFP_INTERNAL_DIAGS_PROFILE * STATUS_BIT_WIDTH;
+
+ _check_factory_content();
+ if (factory_content != S_UNKNOWN)
+ res |= factory_content << SFP_FACTORY_CONTENT * STATUS_BIT_WIDTH;
+
+ _check_base_system_content();
+ if (base_system_content != S_UNKNOWN)
+ res |= base_system_content << SFP_BASE_SYSTEM_CONTENT * STATUS_BIT_WIDTH;
#endif
_parse_disabled_status(NULL);
if ((status >> (SFP_INTERNAL_CONTENT * STATUS_BIT_WIDTH)) & STATUS_SET)
internal_content = (status >> (SFP_INTERNAL_CONTENT * STATUS_BIT_WIDTH)) & STATUS_MASK;
#endif
+
if ((status >> (SFP_CAN_HAS_DEBUGGER * STATUS_BIT_WIDTH)) & STATUS_SET)
can_has_debugger = (status >> (SFP_CAN_HAS_DEBUGGER * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_EPHEMERAL_VOLUME * STATUS_BIT_WIDTH)) & STATUS_SET)
+ is_ephemeral = (status >> (SFP_EPHEMERAL_VOLUME * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
#if TARGET_OS_IPHONE
if ((status >> (SFP_INTERNAL_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_SET)
internal_release_type = (status >> (SFP_INTERNAL_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_FACTORY_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_SET)
+ factory_release_type = (status >> (SFP_FACTORY_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_DARWINOS_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_SET)
+ darwin_release_type = (status >> (SFP_DARWINOS_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_RECOVERY_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_SET)
+ recovery_release_type = (status >> (SFP_RECOVERY_RELEASE_TYPE * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_DEVELOPMENT_KERNEL * STATUS_BIT_WIDTH)) & STATUS_SET)
+ development_kernel = (status >> (SFP_DEVELOPMENT_KERNEL * STATUS_BIT_WIDTH)) & STATUS_MASK;
#else
if ((status >> (SFP_INTERNAL_DIAGS_PROFILE * STATUS_BIT_WIDTH)) & STATUS_SET)
internal_diags_profile = (status >> (SFP_INTERNAL_DIAGS_PROFILE * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_FACTORY_CONTENT * STATUS_BIT_WIDTH)) & STATUS_SET)
+ factory_content = (status >> (SFP_FACTORY_CONTENT * STATUS_BIT_WIDTH)) & STATUS_MASK;
+
+ if ((status >> (SFP_BASE_SYSTEM_CONTENT * STATUS_BIT_WIDTH)) & STATUS_SET)
+ base_system_content = (status >> (SFP_BASE_SYSTEM_CONTENT * STATUS_BIT_WIDTH)) & STATUS_MASK;
#endif
for (int i = 0; i < VP_MAX; i++) {
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