1 files changed, 131 insertions, 0 deletions
diff --git a/src/hci/commands/shim_cmd.c b/src/hci/commands/shim_cmd.c
new file mode 100644
index 00000000..11956290
--- /dev/null
+++ b/src/hci/commands/shim_cmd.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2023 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <getopt.h>
+#include <ipxe/command.h>
+#include <ipxe/parseopt.h>
+#include <ipxe/efi/efi_image.h>
+#include <usr/imgmgmt.h>
+#include <usr/shimmgmt.h>
+
+/** @file
+ *
+ * EFI shim command
+ *
+ */
+
+/* Exist as a dummy command on non-EFI platforms */
+#ifdef PLATFORM_efi
+#define shim_dummy 0
+#else
+#define shim_dummy 1
+#endif
+
+/** "shim" options */
+struct shim_options {
+	/** Download timeout */
+	unsigned long timeout;
+	/** Require third party loader */
+	int require_loader;
+	/** Allow PXE base code protocol */
+	int allow_pxe;
+	/** Allow SBAT variable access */
+	int allow_sbat;
+};
+
+/** "shim" option list */
+static struct option_descriptor shim_opts[] = {
+	OPTION_DESC ( "timeout", 't', required_argument,
+		      struct shim_options, timeout, parse_timeout ),
+	OPTION_DESC ( "require-loader", 'l', no_argument,
+		      struct shim_options, require_loader, parse_flag ),
+	OPTION_DESC ( "allow-pxe", 'p', no_argument,
+		      struct shim_options, allow_pxe, parse_flag ),
+	OPTION_DESC ( "allow-sbat", 's', no_argument,
+		      struct shim_options, allow_sbat, parse_flag ),
+};
+
+/** "shim" command descriptor */
+static struct command_descriptor shim_cmd =
+	COMMAND_DESC ( struct shim_options, shim_opts, 0, 1, NULL );
+
+/**
+ * The "shim" command
+ *
+ * @v argc		Argument count
+ * @v argv		Argument list
+ * @ret rc		Return status code
+ */
+static int shim_exec ( int argc, char **argv ) {
+	struct shim_options opts;
+	struct image *image = NULL;
+	struct image *kernel;
+	char *name_uri;
+	int download;
+	int rc;
+
+	/* Do absolutely nothing if this is a non-EFI platform */
+	if ( shim_dummy ) {
+		rc = 0;
+		goto err_dummy;
+	}
+
+	/* Parse options */
+	if ( ( rc = parse_options ( argc, argv, &shim_cmd, &opts ) ) != 0 )
+		goto err_parse;
+
+	/* Decide whether or not to download images */
+	kernel = find_image_tag ( &selected_image );
+	download = ( ! ( kernel && efi_can_load ( kernel ) ) );
+
+	/* Parse name/URI string */
+	name_uri = argv[optind];
+
+	/* Acquire image, if applicable */
+	if ( download && name_uri &&
+	     ( ( rc = imgacquire ( name_uri, opts.timeout,
+				   &image ) ) != 0 ) ) {
+		goto err_image;
+	}
+
+	/* (Un)register as shim */
+	if ( ( rc = shim ( image, opts.require_loader, opts.allow_pxe,
+			   opts.allow_sbat ) ) != 0 )
+		goto err_shim;
+
+ err_shim:
+ err_image:
+ err_parse:
+ err_dummy:
+	return rc;
+}
+
+/** Shim commands */
+struct command shim_commands[] __command = {
+	{
+		.name = "shim",
+		.exec = shim_exec,
+	},
+};