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-rw-r--r--grub-core/commands/menuentry.c337
1 files changed, 337 insertions, 0 deletions
diff --git a/grub-core/commands/menuentry.c b/grub-core/commands/menuentry.c
new file mode 100644
index 0000000..720e6d8
--- /dev/null
+++ b/grub-core/commands/menuentry.c
@@ -0,0 +1,337 @@
+/* menuentry.c - menuentry command */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2010 Free Software Foundation, Inc.
+ *
+ * GRUB 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/err.h>
+#include <grub/dl.h>
+#include <grub/extcmd.h>
+#include <grub/i18n.h>
+#include <grub/normal.h>
+
+static const struct grub_arg_option options[] =
+ {
+ {"class", 1, GRUB_ARG_OPTION_REPEATABLE,
+ N_("Menu entry type."), N_("STRING"), ARG_TYPE_STRING},
+ {"users", 2, 0,
+ N_("List of users allowed to boot this entry."), N_("USERNAME[,USERNAME]"),
+ ARG_TYPE_STRING},
+ {"hotkey", 3, 0,
+ N_("Keyboard key to quickly boot this entry."), N_("KEYBOARD_KEY"), ARG_TYPE_STRING},
+ {"source", 4, 0,
+ N_("Use STRING as menu entry body."), N_("STRING"), ARG_TYPE_STRING},
+ {"id", 0, 0, N_("Menu entry identifier."), N_("STRING"), ARG_TYPE_STRING},
+ /* TRANSLATORS: menu entry can either be bootable by anyone or only by
+ handful of users. By default when security is active only superusers can
+ boot a given menu entry. With --unrestricted (this option)
+ anyone can boot it. */
+ {"unrestricted", 0, 0, N_("This entry can be booted by any user."),
+ 0, ARG_TYPE_NONE},
+ {0, 0, 0, 0, 0, 0}
+ };
+
+static struct
+{
+ const char *name;
+ int key;
+} hotkey_aliases[] =
+ {
+ {"backspace", GRUB_TERM_BACKSPACE},
+ {"tab", GRUB_TERM_TAB},
+ {"delete", GRUB_TERM_KEY_DC},
+ {"insert", GRUB_TERM_KEY_INSERT},
+ {"f1", GRUB_TERM_KEY_F1},
+ {"f2", GRUB_TERM_KEY_F2},
+ {"f3", GRUB_TERM_KEY_F3},
+ {"f4", GRUB_TERM_KEY_F4},
+ {"f5", GRUB_TERM_KEY_F5},
+ {"f6", GRUB_TERM_KEY_F6},
+ {"f7", GRUB_TERM_KEY_F7},
+ {"f8", GRUB_TERM_KEY_F8},
+ {"f9", GRUB_TERM_KEY_F9},
+ {"f10", GRUB_TERM_KEY_F10},
+ {"f11", GRUB_TERM_KEY_F11},
+ {"f12", GRUB_TERM_KEY_F12},
+ };
+
+/* Add a menu entry to the current menu context (as given by the environment
+ variable data slot `menu'). As the configuration file is read, the script
+ parser calls this when a menu entry is to be created. */
+grub_err_t
+grub_normal_add_menu_entry (int argc, const char **args,
+ char **classes, const char *id,
+ const char *users, const char *hotkey,
+ const char *prefix, const char *sourcecode,
+ int submenu)
+{
+ int menu_hotkey = 0;
+ char **menu_args = NULL;
+ char *menu_users = NULL;
+ char *menu_title = NULL;
+ char *menu_sourcecode = NULL;
+ char *menu_id = NULL;
+ struct grub_menu_entry_class *menu_classes = NULL;
+
+ grub_menu_t menu;
+ grub_menu_entry_t *last;
+
+ menu = grub_env_get_menu ();
+ if (! menu)
+ return grub_error (GRUB_ERR_MENU, "no menu context");
+
+ last = &menu->entry_list;
+
+ menu_sourcecode = grub_xasprintf ("%s%s", prefix ?: "", sourcecode);
+ if (! menu_sourcecode)
+ return grub_errno;
+
+ if (classes && classes[0])
+ {
+ int i;
+ for (i = 0; classes[i]; i++); /* count # of menuentry classes */
+ menu_classes = grub_zalloc (sizeof (struct grub_menu_entry_class)
+ * (i + 1));
+ if (! menu_classes)
+ goto fail;
+
+ for (i = 0; classes[i]; i++)
+ {
+ menu_classes[i].name = grub_strdup (classes[i]);
+ if (! menu_classes[i].name)
+ goto fail;
+ menu_classes[i].next = classes[i + 1] ? &menu_classes[i + 1] : NULL;
+ }
+ }
+
+ if (users)
+ {
+ menu_users = grub_strdup (users);
+ if (! menu_users)
+ goto fail;
+ }
+
+ if (hotkey)
+ {
+ unsigned i;
+ for (i = 0; i < ARRAY_SIZE (hotkey_aliases); i++)
+ if (grub_strcmp (hotkey, hotkey_aliases[i].name) == 0)
+ {
+ menu_hotkey = hotkey_aliases[i].key;
+ break;
+ }
+ if (i == ARRAY_SIZE (hotkey_aliases))
+ menu_hotkey = hotkey[0];
+ }
+
+ if (! argc)
+ {
+ grub_error (GRUB_ERR_MENU, "menuentry is missing title");
+ goto fail;
+ }
+
+ menu_title = grub_strdup (args[0]);
+ if (! menu_title)
+ goto fail;
+
+ menu_id = grub_strdup (id ? : menu_title);
+ if (! menu_id)
+ goto fail;
+
+ /* Save argc, args to pass as parameters to block arg later. */
+ menu_args = grub_calloc (argc + 1, sizeof (char *));
+ if (! menu_args)
+ goto fail;
+
+ {
+ int i;
+ for (i = 0; i < argc; i++)
+ {
+ menu_args[i] = grub_strdup (args[i]);
+ if (! menu_args[i])
+ goto fail;
+ }
+ menu_args[argc] = NULL;
+ }
+
+ /* Add the menu entry at the end of the list. */
+ while (*last)
+ last = &(*last)->next;
+
+ *last = grub_zalloc (sizeof (**last));
+ if (! *last)
+ goto fail;
+
+ (*last)->title = menu_title;
+ (*last)->id = menu_id;
+ (*last)->hotkey = menu_hotkey;
+ (*last)->classes = menu_classes;
+ if (menu_users)
+ (*last)->restricted = 1;
+ (*last)->users = menu_users;
+ (*last)->argc = argc;
+ (*last)->args = menu_args;
+ (*last)->sourcecode = menu_sourcecode;
+ (*last)->submenu = submenu;
+
+ menu->size++;
+ return GRUB_ERR_NONE;
+
+ fail:
+
+ grub_free (menu_sourcecode);
+ {
+ int i;
+ for (i = 0; menu_classes && menu_classes[i].name; i++)
+ grub_free (menu_classes[i].name);
+ grub_free (menu_classes);
+ }
+
+ {
+ int i;
+ for (i = 0; menu_args && menu_args[i]; i++)
+ grub_free (menu_args[i]);
+ grub_free (menu_args);
+ }
+
+ grub_free (menu_users);
+ grub_free (menu_title);
+ grub_free (menu_id);
+ return grub_errno;
+}
+
+static char *
+setparams_prefix (int argc, char **args)
+{
+ int i;
+ int j;
+ char *p;
+ char *result;
+ grub_size_t len = 10;
+
+ /* Count resulting string length */
+ for (i = 0; i < argc; i++)
+ {
+ len += 3; /* 3 = 1 space + 2 quotes */
+ p = args[i];
+ while (*p)
+ len += (*p++ == '\'' ? 4 : 1);
+ }
+
+ result = grub_malloc (len + 2);
+ if (! result)
+ return 0;
+
+ grub_strcpy (result, "setparams");
+ p = result + 9;
+
+ for (j = 0; j < argc; j++)
+ {
+ *p++ = ' ';
+ *p++ = '\'';
+ p = grub_strchrsub (p, args[j], '\'', "'\\''");
+ *p++ = '\'';
+ }
+ *p++ = '\n';
+ *p = '\0';
+ return result;
+}
+
+static grub_err_t
+grub_cmd_menuentry (grub_extcmd_context_t ctxt, int argc, char **args)
+{
+ char ch;
+ char *src;
+ char *prefix;
+ unsigned len;
+ grub_err_t r;
+ const char *users;
+
+ if (! argc)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "missing arguments");
+
+ if (ctxt->state[3].set && ctxt->script)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "multiple menuentry definitions");
+
+ if (! ctxt->state[3].set && ! ctxt->script)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "no menuentry definition");
+
+ if (ctxt->state[1].set)
+ users = ctxt->state[1].arg;
+ else if (ctxt->state[5].set)
+ users = NULL;
+ else
+ users = "";
+
+ if (! ctxt->script)
+ return grub_normal_add_menu_entry (argc, (const char **) args,
+ (ctxt->state[0].set ? ctxt->state[0].args
+ : NULL),
+ ctxt->state[4].arg,
+ users,
+ ctxt->state[2].arg, 0,
+ ctxt->state[3].arg,
+ ctxt->extcmd->cmd->name[0] == 's');
+
+ src = args[argc - 1];
+ args[argc - 1] = NULL;
+
+ len = grub_strlen(src);
+ ch = src[len - 1];
+ src[len - 1] = '\0';
+
+ prefix = setparams_prefix (argc - 1, args);
+ if (! prefix)
+ return grub_errno;
+
+ r = grub_normal_add_menu_entry (argc - 1, (const char **) args,
+ ctxt->state[0].args, ctxt->state[4].arg,
+ users,
+ ctxt->state[2].arg, prefix, src + 1,
+ ctxt->extcmd->cmd->name[0] == 's');
+
+ src[len - 1] = ch;
+ args[argc - 1] = src;
+ grub_free (prefix);
+ return r;
+}
+
+static grub_extcmd_t cmd, cmd_sub;
+
+void
+grub_menu_init (void)
+{
+ cmd = grub_register_extcmd ("menuentry", grub_cmd_menuentry,
+ GRUB_COMMAND_FLAG_BLOCKS
+ | GRUB_COMMAND_ACCEPT_DASH
+ | GRUB_COMMAND_FLAG_EXTRACTOR,
+ N_("BLOCK"), N_("Define a menu entry."), options);
+ cmd_sub = grub_register_extcmd ("submenu", grub_cmd_menuentry,
+ GRUB_COMMAND_FLAG_BLOCKS
+ | GRUB_COMMAND_ACCEPT_DASH
+ | GRUB_COMMAND_FLAG_EXTRACTOR,
+ N_("BLOCK"), N_("Define a submenu."),
+ options);
+}
+
+void
+grub_menu_fini (void)
+{
+ grub_unregister_extcmd (cmd);
+ grub_unregister_extcmd (cmd_sub);
+}
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