Add dump_xsc

Author: asdfugil

launchctl.c

@@ -79,6 +79,7 @@ static const struct {
 	{ "examine", "Runs the specified analysis tool against launchd in a non-reentrant manner.", "[<tool> [arg0, arg1, ... , @PID, ...]]", examine_cmd },
 	{ "config", "Modifies persistent configuration parameters for launchd domains.", NULL, config_cmd },
 	{ "dumpstate", "Dumps launchd state to stdout.", NULL, dumpstate_cmd },
+	{ "dump-xsc", "Dumps launchd XPC string caches to stdout.", "<name>", dump_xsc_cmd },
 	{ "dumpjpcategory", "Dumps the jetsam properties category for all services.", NULL, dumpjpcategory_cmd },
 	{ "reboot", "Initiates a system reboot of the specified type.", "[system|halt|obliterate|userspace] [-s]", reboot_cmd },
 	{ "enter-rem", "Enter into Restricted Execution Mode (REM).", NULL, enter_rem_cmd },

launchctl.h

@@ -60,6 +60,7 @@ cmd_main print_cmd;
 cmd_main print_cache_cmd;
 cmd_main print_disabled_cmd;
 cmd_main dumpstate_cmd;
+cmd_main dump_xsc_cmd;
 
 // env.c
 cmd_main setenv_cmd;

print.c

@@ -193,3 +193,35 @@ dumpstate_cmd(xpc_object_t *msg, int argc, char **argv, char **envp, char **appl
 
 	return ret;
 }
+
+int
+dump_xsc_cmd(xpc_object_t *msg, int argc, char **argv, char **envp, char **apple)
+{
+	int ret = ENOTSUP;
+	xpc_object_t reply;
+	vm_address_t addr;
+	vm_size_t sz = 0xa00000;
+
+	if (__builtin_available(macOS 16.0, iOS 19.0, tvOS 19.0, watchOS 12.0, bridgeOS 10.0, *)) {
+		xpc_object_t dict = xpc_dictionary_create(NULL, NULL, 0);
+		*msg = dict;
+
+		if ((ret = launchctl_setup_xpc_dict_for_service_name("system", dict, NULL)) != 0)
+			return ret;
+
+		if (argc > 1)
+			xpc_dictionary_set_string(dict, "name", argv[1]);
+
+		addr = launchctl_create_shmem(dict, sz);
+		ret = launchctl_send_xpc_to_launchd(XPC_ROUTINE_DUMP_XSC, dict, &reply);
+
+		if (ret)
+			fprintf(stderr, "State-dump failed with error %d\n", ret);
+		else
+			launchctl_print_shmem(reply, addr, sz, stdout);
+
+		vm_deallocate(mach_task_self(), addr, sz);
+	}
+
+	return ret;
+}

xpc_private.h

@@ -75,7 +75,8 @@ enum {
 	XPC_ROUTINE_EXAMINE = 826,
 	XPC_ROUTINE_PRINT = 828,
 	XPC_ROUTINE_DUMPSTATE = 834,
-	XPC_ROUTINE_DUMPJPCATEGORY = 837
+	XPC_ROUTINE_DUMPJPCATEGORY = 837,
+	XPC_ROUTINE_DUMP_XSC = 849,
 };
 
 XPC_DECL(xpc_pipe);