--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2013 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/mm.h>
+#include <grub/file.h>
+#include <grub/normal.h>
+#include <grub/syslinux_parse.h>
+
+struct syslinux_say
+{
+ struct syslinux_say *next;
+ struct syslinux_say *prev;
+ char msg[0];
+};
+
+struct initrd_list
+{
+ struct initrd_list *next;
+ char *file;
+};
+
+struct syslinux_menuentry
+{
+ struct syslinux_menuentry *next;
+ struct syslinux_menuentry *prev;
+ char *label;
+ char *extlabel;
+ char *kernel_file;
+ struct initrd_list *initrds;
+ struct initrd_list *initrds_last;
+ char *append;
+ char *argument;
+ char *help;
+ char *comments;
+ grub_size_t commentslen;
+ char hotkey;
+ int make_default;
+ struct syslinux_say *say;
+
+ enum { KERNEL_NO_KERNEL, KERNEL_LINUX, KERNEL_CHAINLOADER,
+ KERNEL_BIN, KERNEL_PXE, KERNEL_CHAINLOADER_BPB,
+ KERNEL_COM32, KERNEL_COM, KERNEL_IMG, KERNEL_CONFIG, LOCALBOOT }
+ entry_type;
+};
+
+struct syslinux_menu
+{
+ struct syslinux_menu *parent;
+ struct syslinux_menuentry *entries;
+ char *def;
+ char *comments;
+ char *background;
+ const char *root_read_directory;
+ const char *root_target_directory;
+ const char *current_read_directory;
+ const char *current_target_directory;
+ const char *filename;
+ grub_size_t commentslen;
+ int timeout;
+ struct syslinux_say *say;
+ grub_syslinux_flavour_t flavour;
+};
+
+struct output_buffer
+{
+ grub_size_t alloc;
+ grub_size_t ptr;
+ char *buf;
+};
+
+static grub_err_t
+syslinux_parse_real (struct syslinux_menu *menu);
+static grub_err_t
+config_file (struct output_buffer *outbuf,
+ const char *root, const char *target_root,
+ const char *cwd, const char *target_cwd,
+ const char *fname, struct syslinux_menu *parent,
+ grub_syslinux_flavour_t flav);
+static grub_err_t
+print_entry (struct output_buffer *outbuf,
+ struct syslinux_menu *menu,
+ const char *str);
+
+static grub_err_t
+ensure_space (struct output_buffer *outbuf, grub_size_t len)
+{
+ grub_size_t newlen;
+ char *newbuf;
+ if (len < outbuf->alloc - outbuf->ptr)
+ return GRUB_ERR_NONE;
+ newlen = (outbuf->ptr + len + 10) * 2;
+ newbuf = grub_realloc (outbuf->buf, newlen);
+ if (!newbuf)
+ return grub_errno;
+ outbuf->alloc = newlen;
+ outbuf->buf = newbuf;
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+print (struct output_buffer *outbuf, const char *str, grub_size_t len)
+{
+ grub_err_t err;
+ err = ensure_space (outbuf, len);
+ if (err)
+ return err;
+ grub_memcpy (&outbuf->buf[outbuf->ptr], str, len);
+ outbuf->ptr += len;
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+add_comment (struct syslinux_menu *menu, const char *comment, int nl)
+{
+ if (menu->entries)
+ {
+ if (menu->entries->commentslen == 0 && *comment == 0)
+ return GRUB_ERR_NONE;
+ menu->entries->comments = grub_realloc (menu->entries->comments,
+ menu->entries->commentslen
+ + 2 + grub_strlen (comment));
+ if (!menu->entries->comments)
+ return grub_errno;
+ menu->entries->commentslen
+ += grub_stpcpy (menu->entries->comments + menu->entries->commentslen,
+ comment)
+ - (menu->entries->comments + menu->entries->commentslen);
+ if (nl)
+ menu->entries->comments[menu->entries->commentslen++] = '\n';
+ menu->entries->comments[menu->entries->commentslen] = '\0';
+ }
+ else
+ {
+ if (menu->commentslen == 0 && *comment == 0)
+ return GRUB_ERR_NONE;
+ menu->comments = grub_realloc (menu->comments, menu->commentslen
+ + 2 + grub_strlen (comment));
+ if (!menu->comments)
+ return grub_errno;
+ menu->commentslen += grub_stpcpy (menu->comments + menu->commentslen,
+ comment)
+ - (menu->comments + menu->commentslen);
+ if (nl)
+ menu->comments[menu->commentslen++] = '\n';
+ menu->comments[menu->commentslen] = '\0';
+ }
+ return GRUB_ERR_NONE;
+}
+
+
+#define print_string(x) do { err = print (outbuf, x, sizeof (x) - 1); if (err) return err; } while (0)
+
+static grub_err_t
+print_num (struct output_buffer *outbuf, int n)
+{
+ char buf[20];
+ grub_snprintf (buf, sizeof (buf), "%d", n);
+ return print (outbuf, buf, grub_strlen (buf));
+}
+
+static grub_err_t
+label (const char *line, struct syslinux_menu *menu)
+{
+ struct syslinux_menuentry *entry;
+
+ entry = grub_malloc (sizeof (*entry));
+ if (!entry)
+ return grub_errno;
+ grub_memset (entry, 0, sizeof (*entry));
+ entry->label = grub_strdup (line);
+ if (!entry->label)
+ {
+ grub_free (entry);
+ return grub_errno;
+ }
+ entry->next = menu->entries;
+ entry->prev = NULL;
+ if (menu->entries)
+ menu->entries->prev = entry;
+ menu->entries = entry;
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+kernel (const char *line, struct syslinux_menu *menu)
+{
+ const char *end = line + grub_strlen (line);
+
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+
+ menu->entries->entry_type = KERNEL_LINUX;
+
+ if (end - line >= 2 && grub_strcmp (end - 2, ".0") == 0)
+ menu->entries->entry_type = KERNEL_PXE;
+
+ if (end - line >= 4 && grub_strcasecmp (end - 4, ".bin") == 0)
+ menu->entries->entry_type = KERNEL_BIN;
+
+ if (end - line >= 3 && grub_strcasecmp (end - 3, ".bs") == 0)
+ menu->entries->entry_type = KERNEL_CHAINLOADER;
+
+ if (end - line >= 4 && grub_strcasecmp (end - 4, ".bss") == 0)
+ menu->entries->entry_type = KERNEL_CHAINLOADER_BPB;
+
+ if (end - line >= 4 && grub_strcasecmp (end - 4, ".c32") == 0)
+ menu->entries->entry_type = KERNEL_COM32;
+
+ if (end - line >= 4 && grub_strcasecmp (end - 4, ".cbt") == 0)
+ menu->entries->entry_type = KERNEL_COM;
+
+ if (end - line >= 4 && grub_strcasecmp (end - 4, ".com") == 0)
+ menu->entries->entry_type = KERNEL_COM;
+
+ if (end - line >= 4 && grub_strcasecmp (end - 4, ".img") == 0)
+ menu->entries->entry_type = KERNEL_IMG;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_linux (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_LINUX;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_boot (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_CHAINLOADER;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_bss (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_CHAINLOADER_BPB;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_pxe (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_PXE;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_fdimage (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_IMG;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_comboot (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_COM;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_com32 (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = KERNEL_COM32;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_config (const char *line, struct syslinux_menu *menu)
+{
+ const char *space;
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ for (space = line; *space && !grub_isspace (*space); space++);
+ menu->entries->kernel_file = grub_strndup (line, space - line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ for (; *space && grub_isspace (*space); space++);
+ if (*space)
+ {
+ menu->entries->argument = grub_strdup (space);
+ if (!menu->entries->argument)
+ return grub_errno;
+ }
+ menu->entries->entry_type = KERNEL_CONFIG;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_append (const char *line, struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->append = grub_strdup (line);
+ if (!menu->entries->append)
+ return grub_errno;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_initrd (const char *line, struct syslinux_menu *menu)
+{
+ struct initrd_list *ninitrd;
+ const char *comma;
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ while (*line)
+ {
+ for (comma = line; *comma && *comma != ','; comma++);
+
+ ninitrd = grub_malloc (sizeof (*ninitrd));
+ if (!ninitrd)
+ return grub_errno;
+ ninitrd->file = grub_strndup (line, comma - line);
+ if (!ninitrd->file)
+ {
+ grub_free (ninitrd);
+ return grub_errno;
+ }
+ ninitrd->next = NULL;
+ if (menu->entries->initrds_last)
+ menu->entries->initrds_last->next = ninitrd;
+ else
+ {
+ menu->entries->initrds_last = ninitrd;
+ menu->entries->initrds = ninitrd;
+ }
+
+ line = comma;
+ while (*line == ',')
+ line++;
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_default (const char *line, struct syslinux_menu *menu)
+{
+ menu->def = grub_strdup (line);
+ if (!menu->def)
+ return grub_errno;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_timeout (const char *line, struct syslinux_menu *menu)
+{
+ menu->timeout = grub_strtoul (line, NULL, 0);
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_menudefault (const char *line __attribute__ ((unused)),
+ struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->make_default = 1;
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_menubackground (const char *line,
+ struct syslinux_menu *menu)
+{
+ menu->background = grub_strdup (line);
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_localboot (const char *line,
+ struct syslinux_menu *menu)
+{
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->kernel_file = grub_strdup (line);
+ if (!menu->entries->kernel_file)
+ return grub_errno;
+ menu->entries->entry_type = LOCALBOOT;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+cmd_extlabel (const char *line, struct syslinux_menu *menu)
+{
+ const char *in;
+ char *out;
+
+ if (!menu->entries)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "kernel without label");
+
+ menu->entries->extlabel = grub_malloc (grub_strlen (line) + 1);
+ if (!menu->entries->extlabel)
+ return grub_errno;
+ in = line;
+ out = menu->entries->extlabel;
+ while (*in)
+ {
+ if (in[0] == '^' && in[1])
+ {
+ menu->entries->hotkey = grub_tolower (in[1]);
+ in++;
+ }
+ *out++ = *in++;
+ }
+ *out = 0;
+
+ return GRUB_ERR_NONE;
+}
+
+
+static grub_err_t
+cmd_say (const char *line, struct syslinux_menu *menu)
+{
+ struct syslinux_say *nsay;
+ nsay = grub_malloc (sizeof (*nsay) + grub_strlen (line) + 1);
+ if (!nsay)
+ return grub_errno;
+ nsay->prev = NULL;
+ if (menu->entries)
+ {
+ nsay->next = menu->entries->say;
+ menu->entries->say = nsay;
+ }
+ else
+ {
+ nsay->next = menu->say;
+ menu->say = nsay;
+ }
+
+ if (nsay->next)
+ nsay->next->prev = nsay;
+
+ grub_memcpy (nsay->msg, line, grub_strlen (line) + 1);
+ return GRUB_ERR_NONE;
+}
+
+static char *
+get_read_filename (struct syslinux_menu *menu,
+ const char *filename)
+{
+ return grub_xasprintf ("%s/%s",
+ filename[0] == '/' ? menu->root_read_directory
+ : menu->current_read_directory, filename);
+}
+
+static char *
+get_target_filename (struct syslinux_menu *menu,
+ const char *filename)
+{
+ return grub_xasprintf ("%s/%s",
+ filename[0] == '/' ? menu->root_target_directory
+ : menu->current_target_directory, filename);
+}
+
+static grub_err_t
+syslinux_parse (const char *filename,
+ struct syslinux_menu *menu)
+{
+ const char *old_filename = menu->filename;
+ grub_err_t ret;
+ char *nf;
+ nf = get_read_filename (menu, filename);
+ if (!nf)
+ return grub_errno;
+ menu->filename = nf;
+ ret = syslinux_parse_real (menu);
+ if (ret == GRUB_ERR_FILE_NOT_FOUND
+ || ret == GRUB_ERR_BAD_FILENAME)
+ {
+ grub_errno = ret = GRUB_ERR_NONE;
+ add_comment (menu, "# File ", 0);
+ add_comment (menu, nf, 0);
+ add_comment (menu, " not found", 1);
+ }
+ grub_free (nf);
+ menu->filename = old_filename;
+ return ret;
+}
+
+struct
+{
+ const char *name1;
+ const char *name2;
+ grub_err_t (*parse) (const char *line, struct syslinux_menu *menu);
+} commands[] = {
+ /* FIXME: support tagname. */
+ {"include", NULL, syslinux_parse},
+ {"menu", "include", syslinux_parse},
+ {"label", NULL, label},
+ {"kernel", NULL, kernel},
+ {"linux", NULL, cmd_linux},
+ {"boot", NULL, cmd_boot},
+ {"bss", NULL, cmd_bss},
+ {"pxe", NULL, cmd_pxe},
+ {"fdimage", NULL, cmd_fdimage},
+ {"comboot", NULL, cmd_comboot},
+ {"com32", NULL, cmd_com32},
+ {"config", NULL, cmd_config},
+ {"append", NULL, cmd_append},
+ /* FIXME: ipappend not supported. */
+ {"localboot", NULL, cmd_localboot},
+ {"initrd", NULL, cmd_initrd},
+ {"default", NULL, cmd_default},
+ {"menu", "label", cmd_extlabel},
+ /* FIXME: MENU LABEL not supported. */
+ /* FIXME: MENU HIDDEN not supported. */
+ /* FIXME: MENU SEPARATOR not supported. */
+ /* FIXME: MENU INDENT not supported. */
+ /* FIXME: MENU DISABLE not supported. */
+ /* FIXME: MENU HIDE not supported. */
+ {"menu", "default", cmd_menudefault},
+ /* FIXME: MENU PASSWD not supported. */
+ /* FIXME: MENU MASTER PASSWD not supported. */
+ {"menu", "background", cmd_menubackground},
+ /* FIXME: MENU BEGIN not supported. */
+ /* FIXME: MENU GOTO not supported. */
+ /* FIXME: MENU EXIT not supported. */
+ /* FIXME: MENU QUIT not supported. */
+ /* FIXME: MENU START not supported. */
+ /* FIXME: MENU AUTOBOOT not supported. */
+ /* FIXME: MENU TABMSG not supported. */
+ /* FIXME: MENU NOTABMSG not supported. */
+ /* FIXME: MENU PASSPROMPT not supported. */
+ /* FIXME: MENU COLOR not supported. */
+ /* FIXME: MENU MSGCOLOR not supported. */
+ /* FIXME: MENU WIDTH not supported. */
+ /* FIXME: MENU MARGIN not supported. */
+ /* FIXME: MENU PASSWORDMARGIN not supported. */
+ /* FIXME: MENU ROWS not supported. */
+ /* FIXME: MENU TABMSGROW not supported. */
+ /* FIXME: MENU CMDLINEROW not supported. */
+ /* FIXME: MENU ENDROW not supported. */
+ /* FIXME: MENU PASSWORDROW not supported. */
+ /* FIXME: MENU TIMEOUTROW not supported. */
+ /* FIXME: MENU HELPMSGROW not supported. */
+ /* FIXME: MENU HELPMSGENDROW not supported. */
+ /* FIXME: MENU HIDDENROW not supported. */
+ /* FIXME: MENU HSHIFT not supported. */
+ /* FIXME: MENU VSHIFT not supported. */
+ {"timeout", NULL, cmd_timeout},
+ /* FIXME: TOTALTIMEOUT not supported. */
+ /* FIXME: ONTIMEOUT not supported. */
+ /* FIXME: ONERROR not supported. */
+ /* FIXME: SERIAL not supported. */
+ /* FIXME: CONSOLE not supported. */
+ /* FIXME: FONT not supported. */
+ /* FIXME: KBDMAP not supported. */
+ {"say", NULL, cmd_say},
+ /* FIXME: DISPLAY not supported. */
+ /* FIXME: F* not supported. */
+
+ /* Commands to control interface behaviour which aren't needed with GRUB.
+ If they are important in your environment please contact GRUB team.
+ */
+ {"prompt", NULL, NULL},
+ {"nocomplete", NULL, NULL},
+ {"noescape", NULL, NULL},
+ {"implicit", NULL, NULL},
+ {"allowoptions", NULL, NULL}
+};
+
+static grub_err_t
+helptext (const char *line, grub_file_t file, struct syslinux_menu *menu)
+{
+ char *help;
+ char *buf = NULL;
+ grub_size_t helplen, alloclen = 0;
+
+ help = grub_strdup (line);
+ helplen = grub_strlen (line);
+ while ((grub_free (buf), buf = grub_file_getline (file)))
+ {
+ char *ptr;
+ grub_size_t needlen;
+ for (ptr = buf; *ptr && grub_isspace (*ptr); ptr++);
+ if (grub_strncasecmp (ptr, "endtext", sizeof ("endtext") - 1) == 0)
+ {
+ ptr += sizeof ("endtext") - 1;
+ for (; *ptr && (grub_isspace (*ptr) || *ptr == '\n' || *ptr == '\r');
+ ptr++);
+ if (!*ptr)
+ {
+ menu->entries->help = help;
+ grub_free (buf);
+ return GRUB_ERR_NONE;
+ }
+ }
+ needlen = helplen + 1 + grub_strlen (buf);
+ if (alloclen < needlen)
+ {
+ alloclen = 2 * needlen;
+ help = grub_realloc (help, alloclen);
+ if (!help)
+ {
+ grub_free (buf);
+ return grub_errno;
+ }
+ }
+ helplen += grub_stpcpy (help + helplen, buf) - (help + helplen);
+ }
+
+ grub_free (buf);
+ return grub_errno;
+}
+
+
+static grub_err_t
+syslinux_parse_real (struct syslinux_menu *menu)
+{
+ grub_file_t file;
+ char *buf = NULL;
+ grub_err_t err = GRUB_ERR_NONE;
+
+ file = grub_file_open (menu->filename);
+ if (!file)
+ return grub_errno;
+ while ((grub_free (buf), buf = grub_file_getline (file)))
+ {
+ const char *ptr1, *ptr2, *ptr3, *ptr4, *ptr5;
+ char *end;
+ unsigned i;
+ end = buf + grub_strlen (buf);
+ while (end > buf && (end[-1] == '\n' || end[-1] == '\r'))
+ end--;
+ *end = 0;
+ for (ptr1 = buf; *ptr1 && grub_isspace (*ptr1); ptr1++);
+ if (*ptr1 == '#' || *ptr1 == 0)
+ {
+ err = add_comment (menu, ptr1, 1);
+ if (err)
+ goto fail;
+ continue;
+ }
+ for (ptr2 = ptr1; !grub_isspace (*ptr2) && *ptr2; ptr2++);
+ for (ptr3 = ptr2; grub_isspace (*ptr3) && *ptr3; ptr3++);
+ for (ptr4 = ptr3; !grub_isspace (*ptr4) && *ptr4; ptr4++);
+ for (ptr5 = ptr4; grub_isspace (*ptr5) && *ptr5; ptr5++);
+ for (i = 0; i < sizeof (commands) / sizeof (commands[0]); i++)
+ if (grub_strlen (commands[i].name1) == (grub_size_t) (ptr2 - ptr1)
+ && grub_strncasecmp (commands[i].name1, ptr1, ptr2 - ptr1) == 0
+ && (commands[i].name2 == NULL
+ || (grub_strlen (commands[i].name2)
+ == (grub_size_t) (ptr4 - ptr3)
+ && grub_strncasecmp (commands[i].name2, ptr3, ptr4 - ptr3)
+ == 0)))
+ break;
+ if (i == sizeof (commands) / sizeof (commands[0]))
+ {
+ if (sizeof ("text") - 1 == ptr2 - ptr1
+ && grub_strncasecmp ("text", ptr1, ptr2 - ptr1) == 0
+ && (sizeof ("help") - 1 == ptr4 - ptr3
+ && grub_strncasecmp ("help", ptr3, ptr4 - ptr3) == 0))
+ {
+ if (helptext (ptr5, file, menu))
+ return 1;
+ continue;
+ }
+
+ add_comment (menu, " # UNSUPPORTED command '", 0);
+ add_comment (menu, ptr1, 0);
+ add_comment (menu, "'", 1);
+
+ continue;
+ }
+ if (commands[i].parse)
+ {
+ err = commands[i].parse (commands[i].name2
+ ? ptr5 : ptr3, menu);
+ if (err)
+ goto fail;
+ }
+ }
+ fail:
+ grub_file_close (file);
+ return err;
+}
+
+static grub_err_t
+print_escaped (struct output_buffer *outbuf,
+ const char *from, const char *to)
+{
+ const char *ptr;
+ grub_err_t err;
+ if (!to)
+ to = from + grub_strlen (from);
+ err = ensure_space (outbuf, (to - from) * 4 + 2);
+ if (err)
+ return err;
+ outbuf->buf[outbuf->ptr++] = '\'';
+ for (ptr = from; *ptr; ptr++)
+ {
+ if (*ptr == '\'')
+ {
+ outbuf->buf[outbuf->ptr++] = '\'';
+ outbuf->buf[outbuf->ptr++] = '\\';
+ outbuf->buf[outbuf->ptr++] = '\'';
+ outbuf->buf[outbuf->ptr++] = '\'';
+ }
+ else
+ outbuf->buf[outbuf->ptr++] = *ptr;
+ }
+ outbuf->buf[outbuf->ptr++] = '\'';
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+print_file (struct output_buffer *outbuf,
+ struct syslinux_menu *menu, const char *from, const char *to)
+{
+ grub_err_t err;
+ if (!to)
+ to = from + grub_strlen (from);
+ err = print_escaped (outbuf, from[0] == '/'
+ ? menu->root_target_directory
+ : menu->current_target_directory, NULL);
+ if (err)
+ return err;
+
+ err = print (outbuf, "/", 1);
+ if (err)
+ return err;
+ return print_escaped (outbuf, from, to);
+}
+
+static void
+simplify_filename (char *str)
+{
+ char *iptr, *optr = str;
+ for (iptr = str; *iptr; iptr++)
+ {
+ if (*iptr == '/' && optr != str && optr[-1] == '/')
+ continue;
+ if (iptr[0] == '/' && iptr[1] == '.' && iptr[2] == '/')
+ {
+ iptr += 2;
+ continue;
+ }
+ if (iptr[0] == '/' && iptr[1] == '.' && iptr[2] == '.'
+ && iptr[3] == '/')
+ {
+ iptr += 3;
+ while (optr >= str && *optr != '/')
+ optr--;
+ if (optr < str)
+ {
+ str[0] = '/';
+ optr = str;
+ }
+ optr++;
+ continue;
+ }
+ *optr++ = *iptr;
+ }
+ *optr = '\0';
+}
+
+static grub_err_t
+write_entry (struct output_buffer *outbuf,
+ struct syslinux_menu *menu,
+ struct syslinux_menuentry *curentry)
+{
+ grub_err_t err;
+ if (curentry->comments)
+ print (outbuf, curentry->comments, grub_strlen (curentry->comments));
+ {
+ struct syslinux_say *say;
+ for (say = curentry->say; say && say->next; say = say->next);
+ for (; say && say->prev; say = say->prev)
+ {
+ print_string ("echo ");
+ if (print_escaped (outbuf, say->msg, NULL)) return grub_errno;
+ print_string ("\n");
+ }
+ }
+
+ /* FIXME: support help text. */
+ switch (curentry->entry_type)
+ {
+ case KERNEL_LINUX:
+ {
+ char *ptr;
+ char *cmdline;
+ char *initrd = NULL;
+ for (ptr = curentry->append; ptr && *ptr; ptr++)
+ if ((ptr == curentry->append || grub_isspace (ptr[-1]))
+ && grub_strncasecmp (ptr, "initrd=", sizeof ("initrd=") - 1)
+ == 0)
+ break;
+ if (ptr && *ptr)
+ {
+ char *ptr2;
+ grub_size_t totlen = grub_strlen (curentry->append);
+ initrd = ptr + sizeof ("initrd=") - 1;
+ for (ptr2 = ptr; *ptr2 && !grub_isspace (*ptr2); ptr2++);
+ if (*ptr2)
+ {
+ *ptr2 = 0;
+ ptr2++;
+ }
+ cmdline = grub_malloc (totlen + 1 - (ptr2 - ptr));
+ if (!cmdline)
+ return grub_errno;
+ grub_memcpy (cmdline, curentry->append, ptr - curentry->append);
+ grub_memcpy (cmdline + (ptr - curentry->append),
+ ptr2, totlen - (ptr2 - curentry->append));
+ *(cmdline + totlen - (ptr2 - ptr)) = 0;
+ }
+ else
+ cmdline = curentry->append;
+ print_string (" if test x$grub_platform = xpc; then "
+ "linux_suffix=16; else linux_suffix= ; fi\n");
+ print_string (" linux$linux_suffix ");
+ print_file (outbuf, menu, curentry->kernel_file, NULL);
+ print_string (" ");
+ if (cmdline)
+ print (outbuf, cmdline, grub_strlen (cmdline));
+ print_string ("\n");
+ if (initrd || curentry->initrds)
+ {
+ struct initrd_list *lst;
+ print_string (" initrd$linux_suffix ");
+ if (initrd)
+ {
+ print_file (outbuf, menu, initrd, NULL);
+ print_string (" ");
+ }
+ for (lst = curentry->initrds; lst; lst = lst->next)
+ {
+ print_file (outbuf, menu, lst->file, NULL);
+ print_string (" ");
+ }
+
+ print_string ("\n");
+ }
+ }
+ break;
+ case KERNEL_CHAINLOADER:
+ print_string (" chainloader ");
+ print_file (outbuf, menu, curentry->kernel_file, NULL);
+ print_string ("\n");
+ break;
+ case KERNEL_CHAINLOADER_BPB:
+ print_string (" chainloader --bpb ");
+ print_file (outbuf, menu, curentry->kernel_file, NULL);
+ print_string ("\n");
+ break;
+ case LOCALBOOT:
+ /* FIXME: support -1. */
+ /* FIXME: PXELINUX. */
+ {
+ int n = grub_strtol (curentry->kernel_file, NULL, 0);
+ if (n >= 0 && n <= 0x02)
+ {
+ print_string (" root=fd");
+ if (print_num (outbuf, n))
+ return grub_errno;
+ print_string (";\n chainloader +1;\n");
+
+ break;
+ }
+ if (n >= 0x80 && n < 0x8a)
+ {
+ print_string (" root=hd");
+ if (print_num (outbuf, n - 0x80))
+ return grub_errno;
+ print_string (";\n chainloader +1;\n");
+ break;
+ }
+ print_string (" # UNSUPPORTED localboot type ");
+ if (print_num (outbuf, n))
+ return grub_errno;
+ print_string ("\n");
+ break;
+ }
+ case KERNEL_COM32:
+ case KERNEL_COM:
+ {
+ char *basename = NULL;
+
+ {
+ char *ptr;
+ for (ptr = curentry->kernel_file; *ptr; ptr++)
+ if (*ptr == '/' || *ptr == '\\')
+ basename = ptr;
+ }
+ if (!basename)
+ basename = curentry->kernel_file;
+ else
+ basename++;
+ if (grub_strcasecmp (basename, "chain.c32") == 0)
+ {
+ char *file = NULL;
+ int is_fd = -1, devn;
+ int part = -1;
+ int swap = 0;
+ char *ptr;
+ for (ptr = curentry->append; *ptr; )
+ {
+ while (grub_isspace (*ptr))
+ ptr++;
+ /* FIXME: support mbr: and boot. */
+ if (ptr[0] == 'h' && ptr[1] == 'd')
+ {
+ is_fd = 0;
+ devn = grub_strtoul (ptr + 2, &ptr, 0);
+ continue;
+ }
+ if (grub_strncasecmp (ptr, "file=", 5) == 0)
+ {
+ file = ptr + 5;
+ for (ptr = file; *ptr && !grub_isspace (*ptr); ptr++);
+ if (*ptr)
+ {
+ *ptr = 0;
+ ptr++;
+ }
+ continue;
+ }
+ if (grub_strncasecmp (ptr, "swap", sizeof ("swap") - 1) == 0)
+ {
+ swap = 1;
+ ptr += sizeof ("swap") - 1;
+ continue;
+ }
+
+ if (ptr[0] == 'f' && ptr[1] == 'd')
+ {
+ is_fd = 1;
+ devn = grub_strtoul (ptr + 2, &ptr, 0);
+ continue;
+ }
+ if (grub_isdigit (ptr[0]))
+ {
+ part = grub_strtoul (ptr, &ptr, 0);
+ continue;
+ }
+ /* FIXME: isolinux, ntldr, cmldr, *dos, seg, hide
+ FIXME: sethidden. */
+ print_string (" # UNSUPPORTED option ");
+ if (print (outbuf, ptr, grub_strlen (ptr)))
+ return 0;
+ print_string ("\n");
+ break;
+ }
+ if (is_fd == -1)
+ {
+ print_string (" # no drive specified\n");
+ break;
+ }
+ if (!*ptr)
+ {
+ print_string (is_fd ? " root=fd": " root=hd");
+ if (print_num (outbuf, devn))
+ return grub_errno;
+ if (part != -1)
+ {
+ print_string (",");
+ if (print_num (outbuf, part + 1))
+ return grub_errno;
+ }
+ print_string (";\n");
+ if (file)
+ {
+ print_string (" chainloader ");
+ print_file (outbuf, menu, file, NULL);
+ print_string (";\n");
+ }
+ else
+ print_string (" chainloader +1;\n");
+ if (swap)
+ print_string (" drivemap -s hd0 \"root\";\n");
+ }
+ break;
+ }
+
+ if (grub_strcasecmp (basename, "mboot.c32") == 0)
+ {
+ char *ptr;
+ int first = 1;
+ int is_kernel = 1;
+ for (ptr = curentry->append; *ptr; )
+ {
+ char *ptrr = ptr;
+ while (*ptr && !grub_isspace (*ptr))
+ ptr++;
+ if (ptrr + 2 == ptr && ptrr[0] == '-' && ptrr[1] == '-')
+ {
+ print_string ("\n");
+ first = 1;
+ continue;
+ }
+ if (first)
+ {
+ if (is_kernel)
+ print_string (" multiboot ");
+ else
+ print_string (" module ");
+ first = 0;
+ is_kernel = 0;
+ if (print_file (outbuf, menu, ptrr, ptr))
+ return grub_errno;
+ continue;
+ }
+ if (print_escaped (outbuf, ptrr, ptr))
+ return grub_errno;
+ }
+ break;
+ }
+
+ if (grub_strcasecmp (basename, "ifcpu64.c32") == 0)
+ {
+ char *lm, *lme, *pae = 0, *paee = 0, *i386s = 0, *i386e = 0;
+ char *ptr;
+ ptr = curentry->append;
+ while (grub_isspace (*ptr))
+ ptr++;
+ lm = ptr;
+ while (*ptr && !grub_isspace (*ptr))
+ ptr++;
+ lme = ptr;
+ while (grub_isspace (*ptr))
+ ptr++;
+ if (ptr[0] == '-' && ptr[1] == '-')
+ {
+ ptr += 2;
+ while (grub_isspace (*ptr))
+ ptr++;
+ pae = ptr;
+ while (*ptr && !grub_isspace (*ptr))
+ ptr++;
+ paee = ptr;
+ }
+ while (grub_isspace (*ptr))
+ ptr++;
+ if (ptr[0] == '-' && ptr[1] == '-')
+ {
+ ptr += 2;
+ while (grub_isspace (*ptr))
+ ptr++;
+ i386s = ptr;
+ while (*ptr && !grub_isspace (*ptr))
+ ptr++;
+ i386e = ptr;
+ }
+ if (lme)
+ *lme = '\0';
+ if (paee)
+ *paee = '\0';
+ if (i386e)
+ *i386e = '\0';
+ if (!i386s)
+ {
+ i386s = pae;
+ pae = 0;
+ }
+ print_string ("if cpuid --long-mode; then true;\n");
+ if (print_entry (outbuf, menu, lm))
+ return grub_errno;
+ if (pae)
+ {
+ print_string ("elif cpuid --pae; then true;\n");
+ if (print_entry (outbuf, menu, pae))
+ return grub_errno;
+ }
+ print_string ("else\n");
+ if (print_entry (outbuf, menu, i386s))
+ return grub_errno;
+ print_string ("fi\n");
+ break;
+ }
+
+ if (grub_strcasecmp (basename, "reboot.c32") == 0)
+ {
+ print_string (" reboot\n");
+ break;
+ }
+
+ if (grub_strcasecmp (basename, "poweroff.com") == 0)
+ {
+ print_string (" halt\n");
+ break;
+ }
+
+ if (grub_strcasecmp (basename, "whichsys.c32") == 0)
+ {
+ grub_syslinux_flavour_t flavour = GRUB_SYSLINUX_ISOLINUX;
+ const char *flav[] =
+ {
+ [GRUB_SYSLINUX_ISOLINUX] = "iso",
+ [GRUB_SYSLINUX_PXELINUX] = "pxe",
+ [GRUB_SYSLINUX_SYSLINUX] = "sys"
+ };
+ char *ptr;
+ for (ptr = curentry->append; *ptr; )
+ {
+ char *bptr, c;
+ while (grub_isspace (*ptr))
+ ptr++;
+ if (grub_strncasecmp (ptr, "-iso-", 5) == 0)
+ {
+ ptr += sizeof ("-iso-") - 1;
+ flavour = GRUB_SYSLINUX_ISOLINUX;
+ continue;
+ }
+ if (grub_strncasecmp (ptr, "-pxe-", 5) == 0)
+ {
+ ptr += sizeof ("-pxe-") - 1;
+ flavour = GRUB_SYSLINUX_PXELINUX;
+ continue;
+ }
+ if (grub_strncasecmp (ptr, "-sys-", 5) == 0)
+ {
+ ptr += sizeof ("-sys-") - 1;
+ flavour = GRUB_SYSLINUX_SYSLINUX;
+ continue;
+ }
+ bptr = ptr;
+ while (*ptr && !grub_isspace (*ptr))
+ ptr++;
+ c = *ptr;
+ *ptr = '\0';
+ if (menu->flavour == GRUB_SYSLINUX_UNKNOWN
+ && flavour == GRUB_SYSLINUX_ISOLINUX)
+ {
+ print_string ("if [ x$syslinux_flavour = xiso -o x$syslinux_flavour = x ]; then true;\n");
+ menu->flavour = GRUB_SYSLINUX_ISOLINUX;
+ print_entry (outbuf, menu, bptr);
+ menu->flavour = GRUB_SYSLINUX_UNKNOWN;
+ print_string ("fi\n");
+ }
+ else if (menu->flavour == GRUB_SYSLINUX_UNKNOWN)
+ {
+ print_string ("if [ x$syslinux_flavour = x");
+ err = print (outbuf, flav[flavour], grub_strlen (flav[flavour]));
+ if (err)
+ return err;
+ print_string (" ]; then true;\n");
+ menu->flavour = flavour;
+ print_entry (outbuf, menu, bptr);
+ menu->flavour = GRUB_SYSLINUX_UNKNOWN;
+ print_string ("fi\n");
+ }
+ if (menu->flavour != GRUB_SYSLINUX_UNKNOWN
+ && menu->flavour == flavour)
+ print_entry (outbuf, menu, bptr);
+ *ptr = c;
+ }
+ break;
+ }
+
+ /* FIXME: gdb, GFXBoot, Hdt, Ifcpu, Ifplop, Kbdmap,
+ FIXME: Linux, Lua, Meminfo, rosh, Sanbboot */
+
+ print_string (" # UNSUPPORTED com(32) ");
+ err = print (outbuf, basename, grub_strlen (basename));
+ if (err)
+ return err;
+ print_string ("\ntrue;\n");
+ break;
+ }
+ case KERNEL_CONFIG:
+ {
+ char *new_cwd, *new_target_cwd;
+ const char *ap;
+ ap = curentry->append;
+ if (!ap)
+ ap = curentry->argument;
+ if (!ap)
+ ap = "";
+ new_cwd = get_read_filename (menu, ap);
+ if (!new_cwd)
+ return grub_errno;
+ new_target_cwd = get_target_filename (menu, ap);
+ if (!new_target_cwd)
+ return grub_errno;
+
+ struct syslinux_menu *menuptr;
+ char *newname;
+ int depth = 0;
+
+ newname = get_read_filename (menu, curentry->kernel_file);
+ if (!newname)
+ return grub_errno;
+ simplify_filename (newname);
+
+ print_string ("#");
+ print_file (outbuf, menu, curentry->kernel_file, NULL);
+ print_string (" ");
+ print (outbuf, newname, grub_strlen (newname));
+ print_string (":\n");
+
+ for (menuptr = menu; menuptr; menuptr = menuptr->parent, depth++)
+ if (grub_strcmp (menuptr->filename, newname) == 0
+ || depth > 20)
+ break;
+ if (menuptr)
+ {
+ print_string (" syslinux_configfile -r ");
+ print_file (outbuf, menu, "/", NULL);
+ print_string (" -c ");
+ print_file (outbuf, menu, ap, NULL);
+ print_string (" ");
+ print_file (outbuf, menu, curentry->kernel_file, NULL);
+ print_string ("\n");
+ }
+ else
+ {
+ err = config_file (outbuf, menu->root_read_directory,
+ menu->root_target_directory, new_cwd, new_target_cwd,
+ newname, menu, menu->flavour);
+ if (err == GRUB_ERR_FILE_NOT_FOUND
+ || err == GRUB_ERR_BAD_FILENAME)
+ {
+ grub_errno = err = GRUB_ERR_NONE;
+ print_string ("# File ");
+ err = print (outbuf, newname, grub_strlen (newname));
+ if (err)
+ return err;
+ print_string (" not found\n");
+ }
+ if (err)
+ return err;
+ }
+ grub_free (newname);
+ grub_free (new_cwd);
+ grub_free (new_target_cwd);
+ }
+ break;
+ case KERNEL_NO_KERNEL:
+ /* FIXME: support this. */
+ case KERNEL_BIN:
+ case KERNEL_PXE:
+ case KERNEL_IMG:
+ print_string (" # UNSUPPORTED entry type ");
+ if (print_num (outbuf, curentry->entry_type))
+ return grub_errno;
+ print_string ("\ntrue;\n");
+ break;
+ }
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+print_entry (struct output_buffer *outbuf,
+ struct syslinux_menu *menu,
+ const char *str)
+{
+ struct syslinux_menuentry *curentry;
+ for (curentry = menu->entries; curentry; curentry = curentry->next)
+ if (grub_strcasecmp (curentry->label, str) == 0)
+ {
+ grub_err_t err;
+ err = write_entry (outbuf, menu, curentry);
+ if (err)
+ return err;
+ }
+ return GRUB_ERR_NONE;
+}
+
+static void
+free_menu (struct syslinux_menu *menu)
+{
+ struct syslinux_say *say, *nsay;
+ struct syslinux_menuentry *entry, *nentry;
+
+ grub_free (menu->def);
+ grub_free (menu->comments);
+ grub_free (menu->background);
+ for (say = menu->say; say ; say = nsay)
+ {
+ nsay = say->next;
+ grub_free (say->msg);
+ grub_free (say);
+ }
+
+ for (entry = menu->entries; entry ; entry = nentry)
+ {
+ nentry = entry->next;
+ struct initrd_list *initrd, *ninitrd;
+
+ for (initrd = entry->initrds; initrd ; initrd = ninitrd)
+ {
+ ninitrd = initrd->next;
+ grub_free (initrd->file);
+ grub_free (initrd);
+ }
+
+ grub_free (entry->comments);
+ grub_free (entry->kernel_file);
+ grub_free (entry->label);
+ grub_free (entry->extlabel);
+ grub_free (entry->append);
+ grub_free (entry->help);
+ grub_free (entry);
+ }
+}
+
+static grub_err_t
+config_file (struct output_buffer *outbuf,
+ const char *root, const char *target_root,
+ const char *cwd, const char *target_cwd,
+ const char *fname, struct syslinux_menu *parent,
+ grub_syslinux_flavour_t flav)
+{
+ grub_err_t err;
+ struct syslinux_menu menu;
+ struct syslinux_menuentry *curentry, *lentry;
+ struct syslinux_say *say;
+
+ grub_memset (&menu, 0, sizeof (menu));
+ menu.flavour = flav;
+ menu.root_read_directory = root;
+ menu.root_target_directory = target_root;
+ menu.current_read_directory = cwd;
+ menu.current_target_directory = target_cwd;
+
+ menu.filename = fname;
+ menu.parent = parent;
+ err = syslinux_parse_real (&menu);
+ if (err)
+ return err;
+
+ for (say = menu.say; say && say->next; say = say->next);
+ for (; say && say->prev; say = say->prev)
+ {
+ print_string ("echo ");
+ err = print_escaped (outbuf, say->msg, NULL);
+ if (err)
+ return err;
+ print_string ("\n");
+ }
+
+ if (menu.background)
+ {
+ print_string (" background_image ");
+ err = print_file (outbuf, &menu, menu.background, NULL);
+ if (err)
+ return err;
+ print_string ("\n");
+ }
+
+ if (menu.timeout == 0 && menu.entries && menu.def)
+ {
+ err = print_entry (outbuf, &menu, menu.def);
+ if (err)
+ return err;
+ }
+ else if (menu.entries)
+ {
+ for (curentry = menu.entries; curentry->next; curentry = curentry->next);
+ lentry = curentry;
+
+ print_string ("set timeout='");
+ err = print_num (outbuf, (menu.timeout + 9) / 10);
+ if (err)
+ return err;
+ print_string ("\n");
+ if (menu.comments)
+ {
+ err = print (outbuf, menu.comments, grub_strlen (menu.comments));
+ if (err)
+ return err;
+ }
+
+ if (menu.def)
+ {
+ print_string (" default=");
+ err = print_escaped (outbuf, menu.def, NULL);
+ if (err)
+ return err;
+ print_string ("\n");
+ }
+ for (curentry = lentry; curentry; curentry = curentry->prev)
+ {
+ print_string ("menuentry ");
+ err = print_escaped (outbuf,
+ curentry->extlabel ? : curentry->label, NULL);
+ if (err)
+ return err;
+ if (curentry->hotkey)
+ {
+ char hk[] = { curentry->hotkey, '\0' };
+ print_string (" --hotkey '");
+ print_string (hk);
+ print_string ("'");
+ }
+ print_string (" --id ");
+ err = print_escaped (outbuf, curentry->label, NULL);
+ if (err)
+ return err;
+ print_string (" {\n");
+
+ err = write_entry (outbuf, &menu, curentry);
+ if (err)
+ return err;
+
+ print_string ("}\n");
+ }
+ }
+ free_menu (&menu);
+ return GRUB_ERR_NONE;
+}
+
+char *
+grub_syslinux_config_file (const char *base, const char *target_base,
+ const char *cwd, const char *target_cwd,
+ const char *fname, grub_syslinux_flavour_t flav)
+{
+ struct output_buffer outbuf = { 0, 0, 0 };
+ grub_err_t err;
+ err = config_file (&outbuf, base, target_base, cwd, target_cwd,
+ fname, NULL, flav);
+ if (err)
+ return NULL;
+ err = print (&outbuf, "\0", 1);
+ if (err)
+ return NULL;
+ return outbuf.buf;
+}
projects / grub.git / commitdiff