--- /dev/null
+/* Copyright (c) 2012-2013 Apple Inc. All Rights Reserved. */
+
+#include "server.h"
+#include "session.h"
+#include "process.h"
+#include "authtoken.h"
+#include "authdb.h"
+#include "rule.h"
+#include "authutilities.h"
+#include "crc.h"
+#include "mechanism.h"
+#include "agent.h"
+#include "authitems.h"
+#include "debugging.h"
+#include "engine.h"
+#include "connection.h"
+
+#include <bsm/libbsm.h>
+#include <Security/Authorization.h>
+#include <Security/AuthorizationPriv.h>
+#include <Security/AuthorizationTagsPriv.h>
+#include <xpc/private.h>
+#include <dispatch/dispatch.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFXPCBridge.h>
+#include <IOKit/IOMessage.h>
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#include <IOKit/pwr_mgt/IOPMLibPrivate.h>
+
+#define MAX_PROCESS_RIGHTS 100
+
+static CFMutableDictionaryRef gProcessMap = NULL;
+static CFMutableDictionaryRef gSessionMap = NULL;
+static CFMutableDictionaryRef gAuthTokenMap = NULL;
+static authdb_t gDatabase = NULL;
+
+static dispatch_queue_t power_queue;
+static bool gInDarkWake = false;
+static IOPMConnection gIOPMconn = NULL;
+static bool gXPCTransaction = false;
+
+static dispatch_queue_t
+get_server_dispatch_queue()
+{
+ static dispatch_once_t onceToken;
+ static dispatch_queue_t server_queue = NULL;
+
+ dispatch_once(&onceToken, ^{
+ server_queue = dispatch_queue_create("com.apple.security.auth.server", DISPATCH_QUEUE_SERIAL);
+ check(server_queue != NULL);
+ });
+
+ return server_queue;
+}
+
+static Boolean _processEqualCallBack(const void *value1, const void *value2)
+{
+ audit_info_s * info1 = (audit_info_s*)value1;
+ audit_info_s * info2 = (audit_info_s*)value2;
+ if (info1->pid == info2->pid) {
+ if (info1->tid == info2->tid) {
+ return true;
+ }
+ }
+ return false;
+}
+
+static CFHashCode _processHashCallBack(const void *value)
+{
+ audit_info_s * info = (audit_info_s*)value;
+ uint64_t crc = crc64_init();
+ crc = crc64_update(crc, &info->pid, sizeof(info->pid));
+ crc = crc64_update(crc, &info->tid, sizeof(info->tid));
+ crc = crc64_final(crc);
+ return crc;
+}
+
+static const CFDictionaryKeyCallBacks kProcessMapKeyCallBacks = {
+ .version = 0,
+ .retain = NULL,
+ .release = NULL,
+ .copyDescription = NULL,
+ .equal = &_processEqualCallBack,
+ .hash = &_processHashCallBack
+};
+
+static Boolean _sessionEqualCallBack(const void *value1, const void *value2)
+{
+ return (*(session_id_t*)value1) == (*(session_id_t*)value2);
+}
+
+static CFHashCode _sessionHashCallBack(const void *value)
+{
+ return (CFHashCode)(*(session_id_t*)(value));
+}
+
+static const CFDictionaryKeyCallBacks kSessionMapKeyCallBacks = {
+ .version = 0,
+ .retain = NULL,
+ .release = NULL,
+ .copyDescription = NULL,
+ .equal = &_sessionEqualCallBack,
+ .hash = &_sessionHashCallBack
+};
+
+void server_cleanup()
+{
+ CFRelease(gProcessMap);
+ CFRelease(gSessionMap);
+ CFRelease(gAuthTokenMap);
+
+ IOPMConnectionSetDispatchQueue(gIOPMconn, NULL);
+ IOPMConnectionRelease(gIOPMconn);
+
+ dispatch_queue_t queue = get_server_dispatch_queue();
+ if (queue) {
+ dispatch_release(queue);
+ }
+ dispatch_release(power_queue);
+}
+
+static void _IOMPCallBack(void * param AUTH_UNUSED, IOPMConnection connection, IOPMConnectionMessageToken token, IOPMSystemPowerStateCapabilities capabilities)
+{
+ LOGV("server: IOMP powerstates %i", capabilities);
+ if (capabilities & kIOPMSystemPowerStateCapabilityDisk)
+ LOGV("server: disk");
+ if (capabilities & kIOPMSystemPowerStateCapabilityNetwork)
+ LOGV("server: net");
+ if (capabilities & kIOPMSystemPowerStateCapabilityAudio)
+ LOGV("server: audio");
+ if (capabilities & kIOPMSystemPowerStateCapabilityVideo)
+ LOGV("server: video");
+
+ /* if cpu and no display -> in DarkWake */
+ LOGD("server: DarkWake check current=%i==%i", (capabilities & (kIOPMSystemPowerStateCapabilityCPU|kIOPMSystemPowerStateCapabilityVideo)), kIOPMSystemPowerStateCapabilityCPU);
+ if ((capabilities & (kIOPMSystemPowerStateCapabilityCPU|kIOPMSystemPowerStateCapabilityVideo)) == kIOPMSystemPowerStateCapabilityCPU) {
+ LOGV("server: enter DarkWake");
+ gInDarkWake = true;
+ } else if (gInDarkWake) {
+ LOGV("server: exit DarkWake");
+ gInDarkWake = false;
+ }
+
+ (void)IOPMConnectionAcknowledgeEvent(connection, token);
+
+ return;
+}
+
+static void
+_setupDarkWake(void *ctx)
+{
+ IOReturn ret;
+
+ IOPMConnectionCreate(CFSTR("IOPowerWatcher"),
+ kIOPMSystemPowerStateCapabilityDisk
+ | kIOPMSystemPowerStateCapabilityNetwork
+ | kIOPMSystemPowerStateCapabilityAudio
+ | kIOPMSystemPowerStateCapabilityVideo,
+ &gIOPMconn);
+
+ ret = IOPMConnectionSetNotification(gIOPMconn, NULL, _IOMPCallBack);
+ if (ret != kIOReturnSuccess)
+ return;
+
+ IOPMConnectionSetDispatchQueue(gIOPMconn, power_queue);
+
+ IOPMScheduleUserActiveChangedNotification(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(bool active) {
+ if (active) {
+ gInDarkWake = false;
+ }
+ });
+}
+
+bool server_in_dark_wake()
+{
+ return gInDarkWake;
+}
+
+authdb_t server_get_database()
+{
+ return gDatabase;
+}
+
+static void _setupAuditSessionMonitor()
+{
+ dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+ au_sdev_handle_t *dev = au_sdev_open(AU_SDEVF_ALLSESSIONS);
+ int event;
+ auditinfo_addr_t aia;
+
+ if (NULL == dev) {
+ LOGE("server: could not open %s %d", AUDIT_SDEV_PATH, errno);
+ return;
+ }
+
+ for (;;) {
+ if (0 != au_sdev_read_aia(dev, &event, &aia)) {
+ LOGE("server: au_sdev_read_aia failed: %d", errno);
+ continue;
+ }
+ LOGD("server: au_sdev_handle_t event=%i, session=%i", event, aia.ai_asid);
+ if (event == AUE_SESSION_CLOSE) {
+ dispatch_async(get_server_dispatch_queue(), ^{
+ LOGV("server: session %i destroyed", aia.ai_asid);
+ CFDictionaryRemoveValue(gSessionMap, &aia.ai_asid);
+ });
+ }
+ }
+
+ });
+}
+
+static void _setupSignalHandlers()
+{
+ signal(SIGTERM, SIG_IGN);
+ static dispatch_source_t sigtermHandler;
+ sigtermHandler = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGTERM, 0, get_server_dispatch_queue());
+ if (sigtermHandler) {
+ dispatch_source_set_event_handler(sigtermHandler, ^{
+
+ // should we clean up any state?
+ exit(EXIT_SUCCESS);
+ });
+ dispatch_resume(sigtermHandler);
+ }
+}
+
+OSStatus server_init(void)
+{
+ OSStatus status = errAuthorizationSuccess;
+
+ auditinfo_addr_t info;
+ memset(&info, 0, sizeof(info));
+ getaudit_addr(&info, sizeof(info));
+ LOGV("server: uid=%i, sid=%i", info.ai_auid, info.ai_asid);
+
+ require_action(get_server_dispatch_queue() != NULL, done, status = errAuthorizationInternal);
+
+ gProcessMap = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kProcessMapKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+ require_action(gProcessMap != NULL, done, status = errAuthorizationInternal);
+
+ gSessionMap = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kSessionMapKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+ require_action(gSessionMap != NULL, done, status = errAuthorizationInternal);
+
+ gAuthTokenMap = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kAuthTokenKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+ require_action(gAuthTokenMap != NULL, done, status = errAuthorizationInternal);
+
+ gDatabase = authdb_create();
+ require_action(gDatabase != NULL, done, status = errAuthorizationInternal);
+
+ // check to see if we have an updates
+ authdb_connection_t dbconn = authdb_connection_acquire(gDatabase);
+ authdb_maintenance(dbconn);
+ authdb_connection_release(&dbconn);
+
+ power_queue = dispatch_queue_create("com.apple.security.auth.power", DISPATCH_QUEUE_SERIAL);
+ check(power_queue != NULL);
+ dispatch_async_f(power_queue, NULL, _setupDarkWake);
+
+ _setupAuditSessionMonitor();
+ _setupSignalHandlers();
+
+done:
+ return status;
+}
+
+static void _server_parse_audit_token(audit_token_t * token, audit_info_s * info)
+{
+ if (token && info) {
+ memset(info, 0, sizeof(*info));
+ au_tid_t tid;
+ memset(&tid, 0, sizeof(tid));
+ audit_token_to_au32(*token, &info->auid, &info->euid,
+ &info->egid, &info->ruid, &info->rgid,
+ &info->pid, &info->asid, &tid);
+ info->tid = tid.port;
+ info->opaqueToken = *token;
+ }
+}
+
+connection_t
+server_register_connection(xpc_connection_t connection)
+{
+ __block connection_t conn = NULL;
+ __block session_t session = NULL;
+ __block process_t proc = NULL;
+ __block CFIndex conn_count = 0;
+
+ require(connection != NULL, done);
+
+ audit_token_t auditToken;
+ audit_info_s info;
+ xpc_connection_get_audit_token(connection, &auditToken);
+ _server_parse_audit_token(&auditToken, &info);
+
+
+ dispatch_sync(get_server_dispatch_queue(), ^{
+ session = (session_t)CFDictionaryGetValue(gSessionMap, &info.asid);
+ if (session) {
+ CFRetain(session);
+ } else {
+ session = session_create(info.asid);
+ CFDictionarySetValue(gSessionMap, session_get_key(session), session);
+ }
+
+ proc = (process_t)CFDictionaryGetValue(gProcessMap, &info);
+ if (proc) {
+ CFRetain(proc);
+ }
+
+ if (proc) {
+ conn = connection_create(proc);
+ conn_count = process_add_connection(proc, conn);
+ } else {
+ proc = process_create(&info, session);
+ if (proc) {
+ conn = connection_create(proc);
+ conn_count = process_add_connection(proc, conn);
+ session_add_process(session, proc);
+ CFDictionarySetValue(gProcessMap, process_get_key(proc), proc);
+ }
+ }
+
+ if (!gXPCTransaction) {
+ xpc_transaction_begin();
+ gXPCTransaction = true;
+ }
+ });
+
+ LOGV("server[%i]: registered connection (total=%li)", info.pid, conn_count);
+
+done:
+ CFReleaseSafe(session);
+ CFReleaseSafe(proc);
+ return conn;
+}
+
+void
+server_unregister_connection(connection_t conn)
+{
+ if (conn != NULL) {
+ process_t proc = connection_get_process(conn);
+
+ dispatch_sync(get_server_dispatch_queue(), ^{
+ CFIndex connectionCount = process_get_connection_count(proc);
+ LOGV("server[%i]: unregistered connection (total=%li)", process_get_pid(proc), connectionCount);
+
+ if (connectionCount == 1) {
+ CFDictionaryRemoveValue(gProcessMap, process_get_key(proc));
+ }
+
+ if (CFDictionaryGetCount(gProcessMap) == 0) {
+ xpc_transaction_end();
+ gXPCTransaction = false;
+ }
+ });
+ // move the destruction of the connection/process off the server queue
+ CFRelease(conn);
+ }
+}
+
+void
+server_register_auth_token(auth_token_t auth)
+{
+ if (auth != NULL) {
+ dispatch_sync(get_server_dispatch_queue(), ^{
+ LOGV("server: registering auth %p", auth);
+ CFDictionarySetValue(gAuthTokenMap, auth_token_get_key(auth), auth);
+ auth_token_set_state(auth, auth_token_state_registered);
+ });
+ }
+}
+
+void
+server_unregister_auth_token(auth_token_t auth)
+{
+ if (auth != NULL) {
+ AuthorizationBlob blob = *(AuthorizationBlob*)auth_token_get_key(auth);
+ dispatch_async(get_server_dispatch_queue(), ^{
+ LOGV("server: unregistering auth %p", auth);
+ CFDictionaryRemoveValue(gAuthTokenMap, &blob);
+ });
+ }
+}
+
+auth_token_t
+server_find_copy_auth_token(AuthorizationBlob * blob)
+{
+ __block auth_token_t auth = NULL;
+ if (blob != NULL) {
+ dispatch_sync(get_server_dispatch_queue(), ^{
+ auth = (auth_token_t)CFDictionaryGetValue(gAuthTokenMap, blob);
+ if (auth) {
+ CFRetain(auth);
+ }
+ });
+ }
+ return auth;
+}
+
+session_t
+server_find_copy_session(session_id_t sid, bool create)
+{
+ __block session_t session = NULL;
+
+ dispatch_sync(get_server_dispatch_queue(), ^{
+ session = (session_t)CFDictionaryGetValue(gSessionMap, &sid);
+ if (session) {
+ CFRetain(session);
+ } else if (create) {
+ session = session_create(sid);
+ if (session) {
+ CFDictionarySetValue(gSessionMap, session_get_key(session), session);
+ }
+ }
+ });
+
+ return session;
+}
+
+#pragma mark -
+#pragma mark API
+
+static OSStatus
+_process_find_copy_auth_token_from_xpc(process_t proc, xpc_object_t message, auth_token_t * auth_out)
+{
+ OSStatus status = errAuthorizationSuccess;
+ require_action(auth_out != NULL, done, status = errAuthorizationInternal);
+
+ size_t len;
+ AuthorizationBlob * blob = (AuthorizationBlob *)xpc_dictionary_get_data(message, AUTH_XPC_BLOB, &len);
+ require_action(blob != NULL, done, status = errAuthorizationInvalidRef);
+ require_action(len == sizeof(AuthorizationBlob), done, status = errAuthorizationInvalidRef);
+
+ auth_token_t auth = process_find_copy_auth_token(proc, blob);
+ require_action(auth != NULL, done, status = errAuthorizationInvalidRef);
+
+#if DEBUG
+ LOGV("server[%i]: authtoken lookup %#x%x %p", process_get_pid(proc), blob->data[1],blob->data[0], auth);
+#else
+ LOGV("server[%i]: authtoken lookup %p", process_get_pid(proc), auth);
+#endif
+
+ *auth_out = auth;
+
+done:
+ return status;
+}
+
+static OSStatus _server_authorize(connection_t conn, auth_token_t auth, AuthorizationFlags flags, auth_rights_t rights, auth_items_t enviroment, engine_t * engine_out)
+{
+ __block OSStatus status = errAuthorizationDenied;
+ engine_t engine = NULL;
+
+ require_action(conn, done, status = errAuthorizationInternal);
+
+ engine = engine_create(conn, auth);
+ require_action(engine, done, status = errAuthorizationInternal);
+
+ if (flags & kAuthorizationFlagInteractionAllowed) {
+ dispatch_sync(connection_get_dispatch_queue(conn), ^{
+ connection_set_engine(conn, engine);
+ status = engine_authorize(engine, rights, enviroment, flags);
+ connection_set_engine(conn, NULL);
+ });
+ } else {
+ status = engine_authorize(engine, rights, enviroment, flags);
+ }
+
+done:
+ if (engine) {
+ if (engine_out) {
+ *engine_out = engine;
+ } else {
+ CFRelease(engine);
+ }
+ }
+ return status;
+}
+
+// IN: AUTH_XPC_RIGHTS, AUTH_XPC_ENVIROMENT, AUTH_XPC_FLAGS
+// OUT: AUTH_XPC_BLOB
+OSStatus
+authorization_create(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+ OSStatus status = errAuthorizationDenied;
+
+ process_t proc = connection_get_process(conn);
+
+ // Passed in args
+ auth_rights_t rights = auth_rights_create_with_xpc(xpc_dictionary_get_value(message, AUTH_XPC_RIGHTS));
+ auth_items_t enviroment = auth_items_create_with_xpc(xpc_dictionary_get_value(message, AUTH_XPC_ENVIROMENT));
+ AuthorizationFlags flags = (AuthorizationFlags)xpc_dictionary_get_uint64(message, AUTH_XPC_FLAGS);
+
+ // Create Authorization Token
+ auth_token_t auth = auth_token_create(proc, flags & kAuthorizationFlagLeastPrivileged);
+ require_action(auth != NULL, done, status = errAuthorizationInternal);
+
+ if (!(flags & kAuthorizationFlagNoData)) {
+ process_add_auth_token(proc,auth);
+ }
+
+ status = _server_authorize(conn, auth, flags, rights, enviroment, NULL);
+ require_noerr(status, done);
+
+ //reply
+ xpc_dictionary_set_data(reply, AUTH_XPC_BLOB, auth_token_get_blob(auth), sizeof(AuthorizationBlob));
+
+done:
+ CFReleaseSafe(rights);
+ CFReleaseSafe(enviroment);
+ CFReleaseSafe(auth);
+ return status;
+}
+
+// IN: AUTH_XPC_DATA, AUTH_XPC_ENVIROMENT, AUTH_XPC_FLAGS
+// OUT: AUTH_XPC_BLOB
+OSStatus authorization_create_with_audit_token(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+ OSStatus status = errAuthorizationDenied;
+ auth_token_t auth = NULL;
+
+ process_t proc = connection_get_process(conn);
+ require(process_get_uid(proc) == 0, done); //only root can use this call
+
+ // Passed in args
+ size_t len = 0;
+ const char * data = xpc_dictionary_get_data(message, AUTH_XPC_DATA, &len);
+ require(data != NULL, done);
+ require(len == sizeof(audit_token_t), done);
+
+// auth_items_t enviroment = auth_items_create_with_xpc(xpc_dictionary_get_value(message, AUTH_XPC_ENVIROMENT));
+ AuthorizationFlags flags = (AuthorizationFlags)xpc_dictionary_get_uint64(message, AUTH_XPC_FLAGS);
+
+ audit_info_s auditInfo;
+ _server_parse_audit_token((audit_token_t*)data, &auditInfo);
+
+ // Create Authorization Token
+ auth = auth_token_create(proc, flags & kAuthorizationFlagLeastPrivileged);
+ require_action(auth != NULL, done, status = errAuthorizationInternal);
+
+ process_add_auth_token(proc,auth);
+
+ //reply
+ xpc_dictionary_set_data(reply, AUTH_XPC_BLOB, auth_token_get_blob(auth), sizeof(AuthorizationBlob));
+
+done:
+// CFReleaseSafe(enviroment);
+ CFReleaseSafe(auth);
+ return status;
+}
+
+// IN: AUTH_XPC_BLOB, AUTH_XPC_FLAGS
+// OUT:
+OSStatus
+authorization_free(connection_t conn, xpc_object_t message, xpc_object_t reply AUTH_UNUSED)
+{
+ OSStatus status = errAuthorizationSuccess;
+ AuthorizationFlags flags = 0;
+ process_t proc = connection_get_process(conn);
+
+ auth_token_t auth = NULL;
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ flags = (AuthorizationFlags)xpc_dictionary_get_uint64(message, AUTH_XPC_FLAGS);
+
+ if (flags & kAuthorizationFlagDestroyRights) {
+ auth_token_credentials_iterate(auth, ^bool(credential_t cred) {
+ credential_invalidate(cred);
+ LOGV("engine[%i]: invalidating %scredential %s (%i) from authorization (%p)", connection_get_pid(conn), credential_get_shared(cred) ? "shared " : "", credential_get_name(cred), credential_get_uid(cred), auth);
+ return true;
+ });
+
+ session_credentials_purge(auth_token_get_session(auth));
+ }
+
+ process_remove_auth_token(proc, auth, flags);
+
+done:
+ CFReleaseSafe(auth);
+ LOGV("server[%i]: AuthorizationFree %i (flags:%x)", connection_get_pid(conn), status, flags);
+ return status;
+}
+
+// IN: AUTH_XPC_BLOB, AUTH_XPC_RIGHTS, AUTH_XPC_ENVIROMENT, AUTH_XPC_FLAGS
+// OUT: AUTH_XPC_OUT_ITEMS
+OSStatus
+authorization_copy_rights(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+ OSStatus status = errAuthorizationDenied;
+ engine_t engine = NULL;
+
+ process_t proc = connection_get_process(conn);
+
+ // Passed in args
+ auth_rights_t rights = auth_rights_create_with_xpc(xpc_dictionary_get_value(message, AUTH_XPC_RIGHTS));
+ auth_items_t enviroment = auth_items_create_with_xpc(xpc_dictionary_get_value(message, AUTH_XPC_ENVIROMENT));
+ AuthorizationFlags flags = (AuthorizationFlags)xpc_dictionary_get_uint64(message, AUTH_XPC_FLAGS);
+
+ auth_token_t auth = NULL;
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ status = _server_authorize(conn, auth, flags, rights, enviroment, &engine);
+ require_noerr(status, done);
+
+ //reply
+ xpc_object_t outItems = auth_rights_export_xpc(engine_get_granted_rights(engine));
+ xpc_dictionary_set_value(reply, AUTH_XPC_OUT_ITEMS, outItems);
+ xpc_release_safe(outItems);
+
+done:
+ CFReleaseSafe(rights);
+ CFReleaseSafe(enviroment);
+ CFReleaseSafe(auth);
+ CFReleaseSafe(engine);
+
+ return status;
+}
+
+// IN: AUTH_XPC_BLOB, AUTH_XPC_TAG
+// OUT: AUTH_XPC_OUT_ITEMS
+OSStatus
+authorization_copy_info(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+
+ OSStatus status = errAuthorizationSuccess;
+ auth_items_t items = NULL;
+ const char * tag = NULL;
+
+ process_t proc = connection_get_process(conn);
+
+ auth_token_t auth = NULL;
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ items = auth_items_create();
+
+ tag = xpc_dictionary_get_string(message, AUTH_XPC_TAG);
+ LOGV("server[%i]: requested tag: %s", connection_get_pid(conn), tag ? tag : "(all)");
+ if (tag) {
+ size_t len;
+ const void * data = auth_items_get_data(auth_token_get_context(auth), tag, &len);
+ if (data) {
+ auth_items_set_data(items, tag, data, len);
+ }
+ } else {
+ auth_items_copy(items, auth_token_get_context(auth));
+ }
+
+#if DEBUG
+ LOGV("server[%i]: Dumping requested AuthRef items", connection_get_pid(conn));
+ _show_cf(items);
+#endif
+
+ //reply
+ xpc_object_t outItems = auth_items_export_xpc(items);
+ xpc_dictionary_set_value(reply, AUTH_XPC_OUT_ITEMS, outItems);
+ xpc_release_safe(outItems);
+
+done:
+ CFReleaseSafe(items);
+ CFReleaseSafe(auth);
+ LOGV("server[%i]: AuthorizationCopyInfo %i", connection_get_pid(conn), status);
+ return status;
+}
+
+// IN: AUTH_XPC_BLOB
+// OUT: AUTH_XPC_EXTERNAL
+OSStatus
+authorization_make_external_form(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+ OSStatus status = errAuthorizationSuccess;
+
+ process_t proc = connection_get_process(conn);
+
+ auth_token_t auth = NULL;
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ AuthorizationExternalForm exForm;
+ AuthorizationExternalBlob * exBlob = (AuthorizationExternalBlob *)&exForm;
+ memset(&exForm, 0, sizeof(exForm));
+
+ exBlob->blob = *auth_token_get_blob(auth);
+ exBlob->session = process_get_session_id(proc);
+
+ xpc_dictionary_set_data(reply, AUTH_XPC_EXTERNAL, &exForm, sizeof(exForm));
+ server_register_auth_token(auth);
+
+done:
+ CFReleaseSafe(auth);
+ LOGV("server[%i]: AuthorizationMakeExternalForm %i", connection_get_pid(conn), status);
+ return status;
+}
+
+// IN: AUTH_XPC_EXTERNAL
+// OUT: AUTH_XPC_BLOB
+OSStatus
+authorization_create_from_external_form(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+ OSStatus status = errAuthorizationSuccess;
+ auth_token_t auth = NULL;
+
+ process_t proc = connection_get_process(conn);
+
+ size_t len;
+ AuthorizationExternalForm * exForm = (AuthorizationExternalForm *)xpc_dictionary_get_data(message, AUTH_XPC_EXTERNAL, &len);
+ require_action(exForm != NULL, done, status = errAuthorizationInternal);
+ require_action(len == sizeof(AuthorizationExternalForm), done, status = errAuthorizationInvalidRef);
+
+ AuthorizationExternalBlob * exBlob = (AuthorizationExternalBlob *)exForm;
+ auth = server_find_copy_auth_token(&exBlob->blob);
+ require_action(auth != NULL, done, status = errAuthorizationDenied);
+
+ process_add_auth_token(proc, auth);
+ xpc_dictionary_set_data(reply, AUTH_XPC_BLOB, auth_token_get_blob(auth), sizeof(AuthorizationBlob));
+
+done:
+ CFReleaseSafe(auth);
+ LOGV("server[%i]: AuthorizationCreateFromExternalForm %i", connection_get_pid(conn), status);
+ return status;
+}
+
+// IN: AUTH_XPC_RIGHT_NAME
+// OUT: AUTH_XPC_DATA
+OSStatus
+authorization_right_get(connection_t conn AUTH_UNUSED, xpc_object_t message, xpc_object_t reply)
+{
+ OSStatus status = errAuthorizationDenied;
+ rule_t rule = NULL;
+ CFTypeRef cfdict = NULL;
+ xpc_object_t xpcdict = NULL;
+
+ authdb_connection_t dbconn = authdb_connection_acquire(server_get_database());
+ rule = rule_create_with_string(xpc_dictionary_get_string(message, AUTH_XPC_RIGHT_NAME), dbconn);
+ require(rule != NULL, done);
+ require(rule_get_id(rule) != 0, done);
+
+ cfdict = rule_copy_to_cfobject(rule, dbconn);
+ require(cfdict != NULL, done);
+
+ xpcdict = _CFXPCCreateXPCObjectFromCFObject(cfdict);
+ require(xpcdict != NULL, done);
+
+ // reply
+ xpc_dictionary_set_value(reply, AUTH_XPC_DATA, xpcdict);
+
+ status = errAuthorizationSuccess;
+
+done:
+ authdb_connection_release(&dbconn);
+ CFReleaseSafe(cfdict);
+ xpc_release_safe(xpcdict);
+ CFReleaseSafe(rule);
+ LOGV("server[%i]: AuthorizationRightGet %i", connection_get_pid(conn), status);
+ return status;
+}
+
+static bool _prompt_for_modifications(process_t proc, rule_t rule)
+{
+// <rdar://problem/13853228> will put back it back at some later date
+// SecRequirementRef ruleReq = rule_get_requirment(rule);
+//
+// if (ruleReq && process_verify_requirment(proc, ruleReq)) {
+// return false;
+// }
+
+ return true;
+}
+
+static CFIndex _get_mechanism_index(CFArrayRef mechanisms, CFStringRef m_name)
+{
+ CFIndex index = -1;
+ require(mechanisms, done);
+
+ CFIndex c = CFArrayGetCount(mechanisms);
+ CFStringRef i_name = NULL;
+ for (CFIndex i = 0; i < c; ++i)
+ {
+ i_name = CFArrayGetValueAtIndex(mechanisms, i);
+ if (i_name && (CFGetTypeID(m_name) == CFStringGetTypeID())) {
+ if (CFStringCompare(i_name, m_name, kCFCompareCaseInsensitive) == kCFCompareEqualTo) {
+ index = i;
+ break;
+ }
+ }
+ }
+
+done:
+ return index;
+}
+
+static bool _update_rule_mechanism(authdb_connection_t dbconn, const char * rule_name, CFStringRef mechanism_name, CFStringRef insert_after_name, bool remove)
+{
+ bool updated = false;
+ rule_t rule = NULL;
+ rule_t update_rule = NULL;
+ CFMutableDictionaryRef cfdict = NULL;
+ CFStringRef update_name = NULL;
+
+ require(mechanism_name, done);
+
+ rule = rule_create_with_string(rule_name, dbconn);
+ require(rule_get_id(rule) != 0, done); // rule doesn't exist in the database
+
+ cfdict = rule_copy_to_cfobject(rule, dbconn);
+ require(cfdict != NULL, done);
+
+ CFMutableArrayRef mechanisms = NULL;
+ bool res = CFDictionaryGetValueIfPresent(cfdict, CFSTR(kAuthorizationRuleParameterMechanisms), (void*)&mechanisms);
+ require(res == true, done);
+
+ CFIndex index = -1;
+
+ if (remove) {
+ index = _get_mechanism_index(mechanisms, mechanism_name);
+ } else {
+ if (insert_after_name) {
+ if ((index = _get_mechanism_index(mechanisms, insert_after_name)) != -1) {
+ index++;
+ } else {
+ index = 0; // if we couldn't find the index add it to the begining
+ }
+ } else {
+ index = 0;
+ }
+ }
+
+ if (index != -1) {
+ if(remove) {
+ CFArrayRemoveValueAtIndex(mechanisms, index);
+ } else {
+ if (index < CFArrayGetCount(mechanisms)) {
+ require_action(CFStringCompare(CFArrayGetValueAtIndex(mechanisms, index), mechanism_name, kCFCompareCaseInsensitive) != kCFCompareEqualTo, done, updated = true);
+ }
+ CFArrayInsertValueAtIndex(mechanisms, index, mechanism_name);
+ }
+
+ CFDictionarySetValue(cfdict, CFSTR(kAuthorizationRuleParameterMechanisms), mechanisms);
+
+ // and write it back
+ update_name = CFStringCreateWithCString(kCFAllocatorDefault, rule_name, kCFStringEncodingUTF8);
+ require(update_name, done);
+ update_rule = rule_create_with_plist(rule_get_type(rule), update_name, cfdict, dbconn);
+ require(update_rule, done);
+
+ require(rule_sql_commit(update_rule, dbconn, CFAbsoluteTimeGetCurrent(), NULL), done);
+ }
+
+ updated = true;
+
+done:
+ CFReleaseSafe(rule);
+ CFReleaseSafe(update_rule);
+ CFReleaseSafe(cfdict);
+ CFReleaseSafe(update_name);
+ return updated;
+}
+
+/// IN: AUTH_XPC_BLOB, AUTH_XPC_INT64
+// OUT:
+OSStatus
+authorization_enable_smartcard(connection_t conn, xpc_object_t message, xpc_object_t reply AUTH_UNUSED)
+{
+ const CFStringRef SMARTCARD_LINE = CFSTR("builtin:smartcard-sniffer,privileged");
+ const CFStringRef BUILTIN_LINE = CFSTR("builtin:policy-banner");
+ const char* SYSTEM_LOGIN_CONSOLE = "system.login.console";
+ const char* AUTHENTICATE = "authenticate";
+
+ __block OSStatus status = errAuthorizationSuccess;
+ bool enable_smartcard = false;
+ authdb_connection_t dbconn = NULL;
+ auth_token_t auth = NULL;
+ auth_rights_t checkRight = NULL;
+
+ process_t proc = connection_get_process(conn);
+
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ checkRight = auth_rights_create();
+ auth_rights_add(checkRight, "config.modify.smartcard");
+ status = _server_authorize(conn, auth, kAuthorizationFlagDefaults | kAuthorizationFlagInteractionAllowed | kAuthorizationFlagExtendRights, checkRight, NULL, NULL);
+ require_noerr(status, done);
+
+ enable_smartcard = xpc_dictionary_get_bool(message, AUTH_XPC_DATA);
+
+ dbconn = authdb_connection_acquire(server_get_database());
+
+ if (!_update_rule_mechanism(dbconn, SYSTEM_LOGIN_CONSOLE, SMARTCARD_LINE, BUILTIN_LINE, enable_smartcard ? false : true)) {
+ status = errAuthorizationInternal;
+ LOGE("server[%i]: smartcard: enable(%i) failed to update %s", connection_get_pid(conn), enable_smartcard, SYSTEM_LOGIN_CONSOLE);
+ }
+ if (!_update_rule_mechanism(dbconn, AUTHENTICATE, SMARTCARD_LINE, NULL, enable_smartcard ? false : true)) {
+ status = errAuthorizationInternal;
+ LOGE("server[%i]: smartcard: enable(%i) failed to update %s", connection_get_pid(conn), enable_smartcard, AUTHENTICATE);
+ }
+
+ authdb_checkpoint(dbconn);
+
+done:
+ authdb_connection_release(&dbconn);
+ CFReleaseSafe(checkRight);
+ CFReleaseSafe(auth);
+ return status;
+}
+
+static int64_t _process_get_identifier_count(process_t proc, authdb_connection_t conn)
+{
+ __block int64_t result = 0;
+
+ authdb_step(conn, "SELECT COUNT(*) AS cnt FROM rules WHERE identifier = ? ", ^(sqlite3_stmt *stmt) {
+ sqlite3_bind_text(stmt, 1, process_get_identifier(proc), -1, NULL);
+ }, ^bool(auth_items_t data) {
+ result = auth_items_get_int64(data, "cnt");
+ return true;
+ });
+
+ return result;
+}
+
+static int64_t _get_max_process_rights()
+{
+ static dispatch_once_t onceToken;
+ static int64_t max_rights = MAX_PROCESS_RIGHTS;
+
+ //sudo defaults write /Library/Preferences/com.apple.authd max_process_rights -bool true
+ dispatch_once(&onceToken, ^{
+ CFTypeRef max = (CFNumberRef)CFPreferencesCopyValue(CFSTR("max_process_rights"), CFSTR(SECURITY_AUTH_NAME), kCFPreferencesAnyUser, kCFPreferencesCurrentHost);
+
+ if (max && CFGetTypeID(max) == CFNumberGetTypeID()) {
+ CFNumberGetValue(max, kCFNumberSInt64Type, &max_rights);
+ }
+ CFReleaseSafe(max);
+ });
+
+ return max_rights;
+}
+
+// IN: AUTH_XPC_BLOB, AUTH_XPC_RIGHT_NAME, AUTH_XPC_DATA
+// OUT:
+OSStatus
+authorization_right_set(connection_t conn, xpc_object_t message, xpc_object_t reply AUTH_UNUSED)
+{
+ __block OSStatus status = errAuthorizationDenied;
+ __block engine_t engine = NULL;
+ CFStringRef cf_rule_name = NULL;
+ CFDictionaryRef cf_rule_dict = NULL;
+ rule_t rule = NULL;
+ rule_t existingRule = NULL;
+ authdb_connection_t dbconn = NULL;
+ auth_token_t auth = NULL;
+ bool force_modify = false;
+ RuleType rule_type = RT_RIGHT;
+ const char * rule_name = NULL;
+ bool auth_rule = false;
+
+ process_t proc = connection_get_process(conn);
+
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ require_action(xpc_dictionary_get_string(message, AUTH_XPC_RIGHT_NAME) != NULL, done, status = errAuthorizationInternal);
+ require_action(xpc_dictionary_get_value(message, AUTH_XPC_DATA) != NULL, done, status = errAuthorizationInternal);
+
+ rule_name = xpc_dictionary_get_string(message, AUTH_XPC_RIGHT_NAME);
+ require(rule_name != NULL, done);
+
+ if (_compare_string(rule_name, "authenticate")) {
+ rule_type = RT_RULE;
+ auth_rule = true;
+ }
+
+ cf_rule_name = CFStringCreateWithCString(kCFAllocatorDefault, rule_name, kCFStringEncodingUTF8);
+ require(cf_rule_name != NULL, done);
+
+ cf_rule_dict = _CFXPCCreateCFObjectFromXPCObject(xpc_dictionary_get_value(message, AUTH_XPC_DATA));
+ require(cf_rule_dict != NULL, done);
+
+ dbconn = authdb_connection_acquire(server_get_database());
+
+ rule = rule_create_with_plist(rule_type, cf_rule_name, cf_rule_dict, dbconn);
+ if (process_get_uid(proc) != 0) {
+ require_action(rule_get_extract_password(rule) == false, done, status = errAuthorizationDenied; LOGE("server[%i]: AuthorizationRightSet not allowed to set extract-password. (denied)", connection_get_pid(conn)));
+ }
+
+ // if rule doesn't currently exist then we have to check to see if they are over the Max.
+ if (rule_get_id(rule) == 0) {
+ if (process_get_identifier(proc) == NULL) {
+ LOGE("server[%i]: AuthorizationRightSet required for process %s (missing code signature). To add rights to the Authorization database, your process must have a code signature.", connection_get_pid(conn), process_get_code_url(proc));
+ force_modify = true;
+ } else {
+ int64_t process_rule_count = _process_get_identifier_count(proc, dbconn);
+ if ((process_rule_count >= _get_max_process_rights())) {
+ if (!connection_get_syslog_warn(conn)) {
+ LOGE("server[%i]: AuthorizationRightSet Denied API abuse process %s already contains %lli rights.", connection_get_pid(conn), process_get_code_url(proc), _get_max_process_rights());
+ connection_set_syslog_warn(conn);
+ }
+ status = errAuthorizationDenied;
+ goto done;
+ }
+ }
+ } else {
+ if (auth_rule) {
+ if (process_get_uid(proc) != 0) {
+ LOGE("server[%i]: AuthorizationRightSet denied, root required to update the 'authenticate' rule", connection_get_pid(conn));
+ status = errAuthorizationDenied;
+ goto done;
+ }
+ } else {
+ // verify they are updating a right and not a rule
+ existingRule = rule_create_with_string(rule_get_name(rule), dbconn);
+ if (rule_get_type(existingRule) == RT_RULE) {
+ LOGE("server[%i]: AuthorizationRightSet Denied updating '%s' rule is prohibited", connection_get_pid(conn), rule_get_name(existingRule));
+ status = errAuthorizationDenied;
+ goto done;
+ }
+ }
+ }
+
+ if (_prompt_for_modifications(proc,rule)) {
+ authdb_connection_release(&dbconn);
+
+ dispatch_sync(connection_get_dispatch_queue(conn), ^{
+ engine = engine_create(conn, auth);
+ connection_set_engine(conn, engine);
+ status = engine_verify_modification(engine, rule, false, force_modify);
+ connection_set_engine(conn, NULL);
+ });
+ require_noerr(status, done);
+
+ dbconn = authdb_connection_acquire(server_get_database());
+ }
+
+ if (rule_sql_commit(rule, dbconn, engine ? engine_get_time(engine) : CFAbsoluteTimeGetCurrent(), proc)) {
+ LOGV("server[%i]: Successfully updated rule %s", connection_get_pid(conn), rule_get_name(rule));
+ authdb_checkpoint(dbconn);
+ status = errAuthorizationSuccess;
+ } else {
+ LOGE("server[%i]: Failed to update rule %s", connection_get_pid(conn), rule_get_name(rule));
+ status = errAuthorizationDenied;
+ }
+
+done:
+ authdb_connection_release(&dbconn);
+ CFReleaseSafe(existingRule);
+ CFReleaseSafe(cf_rule_name);
+ CFReleaseSafe(cf_rule_dict);
+ CFReleaseSafe(auth);
+ CFReleaseSafe(rule);
+ CFReleaseSafe(engine);
+ return status;
+}
+
+// IN: AUTH_XPC_BLOB, AUTH_XPC_RIGHT_NAME
+// OUT:
+OSStatus
+authorization_right_remove(connection_t conn, xpc_object_t message, xpc_object_t reply AUTH_UNUSED)
+{
+ __block OSStatus status = errAuthorizationDenied;
+ __block engine_t engine = NULL;
+ rule_t rule = NULL;
+ authdb_connection_t dbconn = NULL;
+
+ process_t proc = connection_get_process(conn);
+
+ auth_token_t auth = NULL;
+ status = _process_find_copy_auth_token_from_xpc(proc, message, &auth);
+ require_noerr(status, done);
+
+ dbconn = authdb_connection_acquire(server_get_database());
+
+ rule = rule_create_with_string(xpc_dictionary_get_string(message, AUTH_XPC_RIGHT_NAME), dbconn);
+ require(rule != NULL, done);
+
+ if (_prompt_for_modifications(proc,rule)) {
+ authdb_connection_release(&dbconn);
+
+ dispatch_sync(connection_get_dispatch_queue(conn), ^{
+ engine = engine_create(conn, auth);
+ connection_set_engine(conn, engine);
+ status = engine_verify_modification(engine, rule, true, false);
+ connection_set_engine(conn, NULL);
+ });
+ require_noerr(status, done);
+
+ dbconn = authdb_connection_acquire(server_get_database());
+ }
+
+ if (rule_get_id(rule) != 0) {
+ rule_sql_remove(rule, dbconn);
+ }
+
+done:
+ authdb_connection_release(&dbconn);
+ CFReleaseSafe(auth);
+ CFReleaseSafe(rule);
+ CFReleaseSafe(engine);
+ LOGV("server[%i]: AuthorizationRightRemove %i", connection_get_pid(conn), status);
+ return status;
+}
+
+#pragma mark -
+#pragma mark test code
+
+OSStatus
+session_set_user_preferences(connection_t conn, xpc_object_t message, xpc_object_t reply)
+{
+ (void)conn;
+ (void)message;
+ (void)reply;
+ return errAuthorizationSuccess;
+}
+
+void
+server_dev() {
+// rule_t rule = rule_create_with_string("system.preferences.accounts");
+// CFDictionaryRef dict = rule_copy_to_cfobject(rule);
+// _show_cf(dict);
+// CFReleaseSafe(rule);
+// CFReleaseSafe(dict);
+
+// auth_items_t config = NULL;
+// double d2 = 0, d1 = 5;
+// authdb_get_key_value(server_get_authdb_reader(), "config", &config);
+// auth_items_set_double(config, "test", d1);
+// d2 = auth_items_get_double(config, "test");
+// LOGV("d1=%f d2=%f", d1, d2);
+// CFReleaseSafe(config);
+
+
+// auth_items_t items = auth_items_create();
+// auth_items_set_string(items, "test", "testing 1");
+// auth_items_set_string(items, "test2", "testing 2");
+// auth_items_set_string(items, "test3", "testing 3");
+// auth_items_set_flags(items, "test3", 4);
+// auth_items_set_string(items, "apple", "apple");
+// auth_items_set_flags(items, "apple", 1);
+// auth_items_set_int(items, "int", 45);
+// auth_items_set_flags(items, "int", 2);
+// auth_items_set_bool(items, "true", true);
+// auth_items_set_bool(items, "false", false);
+// auth_items_set(items, "com.apple.");
+// auth_show(items);
+// LOGD("Yeah it works: %s", auth_items_get_string(items, "test3"));
+// LOGD("Yeah it works: %i", auth_items_get_bool(items, "true"));
+// LOGD("Yeah it works: %i", auth_items_get_bool(items, "false"));
+// LOGD("Yeah it works: %i", auth_items_get_int(items, "int"));
+// (void)auth_items_get_bool(items, "test3");
+// AuthorizationItemSet * itemSet = auth_items_get_item_set(items);
+// for (uint32_t i = 0; i < itemSet->count; i++) {
+// LOGD("item: %s", itemSet->items[i].name);
+// }
+//
+// xpc_object_t xpcdata = SerializeItemSet(auth_items_get_item_set(items));
+// auth_items_t items2 = auth_items_create_with_xpc(xpcdata);
+// xpc_release(xpcdata);
+// auth_items_remove_with_flags(items2, 7);
+//// auth_items_set_string(items2, "test3", "testing 3 very good");
+// auth_items_copy_with_flags(items2, items, 7);
+// LOGD("Yeah it works: %s", auth_items_get_string(items2, "test3"));
+// auth_show(items2);
+// CFReleaseSafe(items2);
+//
+// CFReleaseSafe(items);
+}
+
projects / apple / security.git / blobdiff