static void __XPC_Peer_Event_Handler(xpc_connection_t connection, xpc_object_t event) {
syslog(LOG_NOTICE, "Received event in helper.");
xpc_type_t type = xpc_get_type(event);
if (type == XPC_TYPE_ERROR) {
if (event == XPC_ERROR_CONNECTION_INVALID) {
// The client process on the other end of the connection has either
// crashed or cancelled the connection. After receiving this error,
// the connection is in an invalid state, and you do not need to
// call xpc_connection_cancel(). Just tear down any associated state
// here.
} else if (event == XPC_ERROR_TERMINATION_IMMINENT) {
// Handle per-connection termination cleanup.
}
} else {
xpc_object_t requestMessage = event;
xpc_object_t replyMessage = xpc_dictionary_create_reply(requestMessage);
// Process request and build a reply message.
__XPC_Fetch_Process_Request(requestMessage, replyMessage);
xpc_connection_send_message(connection, replyMessage);
xpc_release(replyMessage);
}
}
static void xpcEventHandler(xpc_connection_t connection, xpc_object_t event)
{
syslog(LOG_NOTICE, "received event in helper");
xpc_type_t type = xpc_get_type(event);
if (type == XPC_TYPE_ERROR) {
if (event == XPC_ERROR_CONNECTION_INVALID) {
// the client process on the other end of the connection has either
// crashed or cancelled the connection. After receiving this error,
// the connection is in an invalid state, and you do not need to
// call xpc_connection_cancel(). Just tear down any associated state
// here.
}
else if (event == XPC_ERROR_TERMINATION_IMMINENT) {
// handle per-connection termination cleanup.
}
}
else {
xpc_connection_t remote = xpc_dictionary_get_remote_connection(event);
const char* command = xpc_dictionary_get_string(event, "request");
syslog(LOG_NOTICE, "received command in helper: %s", command);
system(command);
xpc_object_t reply = xpc_dictionary_create_reply(event);
xpc_dictionary_set_string(reply, "reply", "command has been executed");
xpc_connection_send_message(remote, reply);
xpc_release(reply);
}
}
//
// Your standard server-side xpc main
//
int main (int argc, char * const argv[])
{
const char *name = serviceName;
if (const char *s = getenv("SYSPOLICYNAME"))
name = s;
// extern char *optarg;
extern int optind;
int arg;
while ((arg = getopt(argc, argv, "v")) != -1)
switch (arg) {
case 'v':
break;
case '?':
usage();
}
if (optind < argc)
usage();
dispatch_queue_t queue = dispatch_queue_create("server", 0);
xpc_connection_t service = xpc_connection_create_mach_service(name, queue, XPC_CONNECTION_MACH_SERVICE_LISTENER /* | XPC_CONNECTION_MACH_SERVICE_PRIVILEGED */);
xpc_connection_set_event_handler(service, ^(xpc_object_t cmsg) {
if (xpc_get_type(cmsg) == XPC_TYPE_CONNECTION) {
xpc_connection_t connection = xpc_connection_t(cmsg);
syslog(LOG_DEBUG, "Connection from pid %d", xpc_connection_get_pid(connection));
xpc_connection_set_event_handler(connection, ^(xpc_object_t msg) {
if (xpc_get_type(msg) == XPC_TYPE_DICTIONARY) {
const char *function = xpc_dictionary_get_string(msg, "function");
syslog(LOG_DEBUG, "pid %d requested %s", xpc_connection_get_pid(connection), function);
xpc_object_t reply = xpc_dictionary_create_reply(msg);
try {
if (function == NULL) {
xpc_dictionary_set_int64(reply, "error", errSecCSInternalError);
} else if (!strcmp(function, "assess")) {
doAssess(msg, reply);
} else if (!strcmp(function, "update")) {
doUpdate(msg, reply);
} else if (!strcmp(function, "record")) {
doRecord(msg, reply, connection);
} else {
xpc_dictionary_set_int64(reply, "error", errSecCSInternalError);
}
} catch (...) {
xpc_dictionary_set_int64(reply, "error", errSecCSInternalError);
}
xpc_connection_send_message(connection, reply);
xpc_release(reply);
}
});
xpc_connection_resume(connection);
} else {
static void
security_auth_peer_event_handler(xpc_connection_t connection, xpc_object_t event)
{
__block OSStatus status = errAuthorizationDenied;
connection_t conn = (connection_t)xpc_connection_get_context(connection);
require_action(conn != NULL, done, LOGE("xpc[%i]: process context not found", xpc_connection_get_pid(connection)));
CFRetainSafe(conn);
xpc_type_t type = xpc_get_type(event);
if (type == XPC_TYPE_ERROR) {
if (event == XPC_ERROR_CONNECTION_INVALID) {
// The client process on the other end of the connection has either
// crashed or cancelled the connection. After receiving this error,
// the connection is in an invalid state, and you do not need to
// call xpc_connection_cancel(). Just tear down any associated state
// here.
LOGV("xpc[%i]: client disconnected", xpc_connection_get_pid(connection));
connection_destory_agents(conn);
} else if (event == XPC_ERROR_TERMINATION_IMMINENT) {
// Handle per-connection termination cleanup.
LOGD("xpc[%i]: per-connection termination", xpc_connection_get_pid(connection));
}
} else {
assert(type == XPC_TYPE_DICTIONARY);
xpc_object_t reply = xpc_dictionary_create_reply(event);
require(reply != NULL, done);
uint64_t auth_type = xpc_dictionary_get_uint64(event, AUTH_XPC_TYPE);
LOGV("xpc[%i]: received message type=%llu", connection_get_pid(conn), auth_type);
switch (auth_type) {
case AUTHORIZATION_CREATE:
status = authorization_create(conn,event,reply);
break;
case AUTHORIZATION_CREATE_WITH_AUDIT_TOKEN:
status = authorization_create_with_audit_token(conn,event,reply);
break;
case AUTHORIZATION_FREE:
status = authorization_free(conn,event,reply);
break;
case AUTHORIZATION_COPY_RIGHTS:
status = authorization_copy_rights(conn,event,reply);
break;
case AUTHORIZATION_COPY_INFO:
status = authorization_copy_info(conn,event,reply);
break;
case AUTHORIZATION_MAKE_EXTERNAL_FORM:
status = authorization_make_external_form(conn,event,reply);
break;
case AUTHORIZATION_CREATE_FROM_EXTERNAL_FORM:
status = authorization_create_from_external_form(conn,event,reply);
break;
case AUTHORIZATION_RIGHT_GET:
status = authorization_right_get(conn,event,reply);
break;
case AUTHORIZATION_RIGHT_SET:
status = authorization_right_set(conn,event,reply);
break;
case AUTHORIZATION_RIGHT_REMOVE:
status = authorization_right_remove(conn,event,reply);
break;
case SESSION_SET_USER_PREFERENCES:
status = session_set_user_preferences(conn,event,reply);
break;
case AUTHORIZATION_DISMISS:
connection_destory_agents(conn);
status = errAuthorizationSuccess;
break;
case AUTHORIZATION_ENABLE_SMARTCARD:
status = authorization_enable_smartcard(conn,event,reply);
break;
case AUTHORIZATION_SETUP:
{
mach_port_t bootstrap = xpc_dictionary_copy_mach_send(event, AUTH_XPC_BOOTSTRAP);
if (!process_set_bootstrap(connection_get_process(conn), bootstrap)) {
if (bootstrap != MACH_PORT_NULL) {
mach_port_deallocate(mach_task_self(), bootstrap);
}
}
}
status = errAuthorizationSuccess;
break;
#if DEBUG
case AUTHORIZATION_DEV:
server_dev();
break;
#endif
default:
break;
}
xpc_dictionary_set_int64(reply, AUTH_XPC_STATUS, status);
xpc_connection_send_message(connection, reply);
xpc_release(reply);
}
done:
CFReleaseSafe(conn);
}
debug_log(ASL_LEVEL_ERR, "aslmanager finished%s\n", (dryrun == 1) ? " dryrun" : "");
if (asl_aux_fd >= 0) asl_close_auxiliary_file(asl_aux_fd);
return 0;
}
static void
accept_connection(xpc_connection_t peer)
{
xpc_connection_set_event_handler(peer, ^(xpc_object_t request) {
if (xpc_get_type(request) == XPC_TYPE_DICTIONARY)
{
uid_t uid = xpc_connection_get_euid(peer);
/* send a reply immediately */
xpc_object_t reply = xpc_dictionary_create_reply(request);
xpc_connection_send_message(peer, reply);
xpc_release(reply);
/*
* Some day, we may use the dictionary to pass parameters
* to aslmanager, but for now, we ignore the input.
*/
if (uid == 0) cli_main(0, NULL);
}
else if (xpc_get_type(request) == XPC_TYPE_ERROR)
{
/* disconnect */
}
dispatch_async(serverq, ^__attribute__((noreturn)) { xpc_server_exit(0); });
