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Diffstat (limited to 'grub-core/lib/legacy_parse.c')
| -rw-r--r-- | grub-core/lib/legacy_parse.c | 875 |
1 files changed, 875 insertions, 0 deletions
diff --git a/grub-core/lib/legacy_parse.c b/grub-core/lib/legacy_parse.c new file mode 100644 index 0000000..05719ab --- /dev/null +++ b/grub-core/lib/legacy_parse.c @@ -0,0 +1,875 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 1999,2000,2001,2002,2003,2004,2010,2012 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/mm.h> +#include <grub/err.h> +#include <grub/legacy_parse.h> +#include <grub/i386/pc/vesa_modes_table.h> +#include <grub/i18n.h> + +#pragma GCC diagnostic ignored "-Wformat-nonliteral" + +struct legacy_command +{ + const char *name; + const char *map; + const char *suffix; + unsigned suffixarg; + unsigned argc; + enum arg_type { + TYPE_VERBATIM, + TYPE_FORCE_OPTION, + TYPE_NOAPM_OPTION, + TYPE_TYPE_OR_NOMEM_OPTION, + TYPE_OPTION, + TYPE_FILE, + TYPE_FILE_NO_CONSUME, + TYPE_PARTITION, + TYPE_BOOL, + TYPE_INT, + TYPE_REST_VERBATIM, + TYPE_VBE_MODE, + TYPE_WITH_CONFIGFILE_OPTION + } argt[4]; + enum { + FLAG_IGNORE_REST = 0x001, + FLAG_FALLBACK_AVAILABLE = 0x004, + FLAG_FALLBACK = 0x008, + FLAG_COLOR_INVERT = 0x010, + FLAG_NO_MENUENTRY = 0x020, + FLAG_MENUENTRY_ONLY = 0x040, + FLAG_TERMINAL = 0x080, + FLAG_TITLE = 0x100, + } flags; + const char *shortdesc; + const char *longdesc; +}; + +/* Help texts are kept here mostly for reference. They are never shown. So + no need to gettextize. + */ +static struct legacy_command legacy_commands[] = + { + /* FIXME: background unsupported. */ + {"blocklist", "blocklist '%s'\n", NULL, 0, 1, {TYPE_FILE}, 0, "FILE", + "Print the blocklist notation of the file FILE."}, + {"boot", "boot\n", NULL, 0, 0, {}, 0, 0, + "Boot the OS/chain-loader which has been loaded."}, + {"bootp", "net_bootp; net_ls_addr; echo $\"" N_("Default server is ${net_default_server}") "\"; if [ x%s = x--with-configfile ]; then " + "if net_get_dhcp_option configfile_name pxe 150 string; then " + "configfile $configfile_name; fi; fi\n", NULL, 0, 1, + {TYPE_WITH_CONFIGFILE_OPTION}, FLAG_IGNORE_REST, "[--with-configfile]", + "Initialize a network device via BOOTP. If the option `--with-configfile'" + " is given, try to load a configuration file specified by the 150 vendor" + " tag."}, + /* FIXME: border unsupported. */ + {"cat", "cat '%s'\n", NULL, 0, 1, {TYPE_FILE}, 0, "FILE", + "Print the contents of the file FILE."}, + {"chainloader", "chainloader %s '%s'\n", NULL, 0, + 2, {TYPE_FORCE_OPTION, TYPE_FILE}, 0, "[--force] FILE", + "Load the chain-loader FILE. If --force is specified, then load it" + " forcibly, whether the boot loader signature is present or not."}, + {"clear", "clear\n", NULL, 0, 0, {}, 0, 0, + "Clear the screen."}, + {"cmp", "cmp '%s' '%s'\n", NULL, 0, + 2, {TYPE_FILE, TYPE_FILE}, FLAG_IGNORE_REST, "FILE1 FILE2", + "Compare the file FILE1 with the FILE2 and inform the different values" + " if any."}, + {"color", "set color_normal='%s'; set color_highlight='%s'\n", NULL, 0, + 2, {TYPE_VERBATIM, TYPE_VERBATIM}, + FLAG_IGNORE_REST | FLAG_FALLBACK_AVAILABLE, "NORMAL [HIGHLIGHT]", + "Change the menu colors. The color NORMAL is used for most" + " lines in the menu, and the color HIGHLIGHT is used to highlight the" + " line where the cursor points. If you omit HIGHLIGHT, then the" + " inverted color of NORMAL is used for the highlighted line." + " The format of a color is \"FG/BG\". FG and BG are symbolic color names." + " A symbolic color name must be one of these: black, blue, green," + " cyan, red, magenta, brown, light-gray, dark-gray, light-blue," + " light-green, light-cyan, light-red, light-magenta, yellow and white." + " But only the first eight names can be used for BG. You can prefix" + " \"blink-\" to FG if you want a blinking foreground color."}, + {"color", "set color_normal='%s'; set color_highlight='%s'\n", NULL, 0, + 1, {TYPE_VERBATIM}, + FLAG_IGNORE_REST | FLAG_FALLBACK | FLAG_COLOR_INVERT, NULL, NULL}, + {"configfile", "legacy_configfile '%s'\n", NULL, 0, 1, {TYPE_FILE}, + 0, "FILE", "Load FILE as the configuration file."}, + {"debug", + "if [ -z \"$debug\" ]; then set debug=all; else set debug=; fi\n", NULL, 0, + 0, {}, 0, 0, "Turn on/off the debug mode."}, + {"default", + "set default='%s'; if [ x\"$default\" = xsaved ]; then load_env; " + "set default=\"$saved_entry\"; fi\n", NULL, 0, 1, {TYPE_VERBATIM}, 0, + "[NUM | `saved']", + "Set the default entry to entry number NUM (if not specified, it is" + " 0, the first entry) or the entry number saved by savedefault."}, + {"dhcp", "net_bootp; net_ls_addr; if [ x%s = x--with-configfile ]; then " + "if net_get_dhcp_option configfile_name pxe 150 string; then " + "configfile $configfile_name; fi; fi\n", NULL, 0, 1, + {TYPE_WITH_CONFIGFILE_OPTION}, FLAG_IGNORE_REST, "[--with-configfile]", + "Initialize a network device via BOOTP. If the option `--with-configfile'" + " is given, try to load a configuration file specified by the 150 vendor" + " tag."}, + {"displayapm", "lsapm\n", NULL, 0, 0, {}, 0, 0, + "Display APM BIOS information."}, + {"displaymem", "lsmmap\n", NULL, 0, 0, {}, 0, 0, + "Display what GRUB thinks the system address space map of the" + " machine is, including all regions of physical RAM installed."}, + /* FIXME: device and efimap unsupported. */ + /* NOTE: embed unsupported. */ + {"fallback", "set fallback='%s'\n", NULL, 0, + 1, {TYPE_VERBATIM}, 0, "NUM...", + "Go into unattended boot mode: if the default boot entry has any" + " errors, instead of waiting for the user to do anything, it" + " immediately starts over using the NUM entry (same numbering as the" + " `default' command). This obviously won't help if the machine" + " was rebooted by a kernel that GRUB loaded."}, + {"find", "search -f '%s'\n", NULL, 0, 1, {TYPE_FILE}, 0, "FILENAME", + "Search for the filename FILENAME in all of partitions and print the list of" + " the devices which contain the file."}, + /* FIXME: findiso unsupported. */ + /* FIXME: foreground unsupported. */ + /* FIXME: fstest unsupported. */ + /* NOTE: The obsolete C/H/S geometry isn't shown anymore. */ + {"geometry", "insmod regexp; ls -l (%s*)\n", NULL, 0, 1, {TYPE_VERBATIM}, 0, "DRIVE", + "Print the information for a drive DRIVE. "}, + {"halt", "halt %s\n", NULL, 0, 1, {TYPE_NOAPM_OPTION}, 0, "[--no-apm]", + "Halt your system. If APM is available on it, turn off the power using" + " the APM BIOS, unless you specify the option `--no-apm'."}, + /* FIXME: help unsupported. */ /* NUL_TERMINATE */ + {"hiddenmenu", NULL, + "if sleep -i $timeout; then timeout=0; else timeout=-1; fi\n", 0, + 0, {}, 0, "", "Hide the menu."}, + {"hide", "parttool '%s' hidden+\n", NULL, 0, 1, {TYPE_PARTITION}, + 0, "PARTITION", + "Hide PARTITION by setting the \"hidden\" bit in" + " its partition type code."}, + /* FIXME: ifconfig unsupported. */ + /* FIXME: impsprobe unsupported. */ + {"initrd", "legacy_initrd '%s' %s\n", NULL, 0, 2, {TYPE_FILE_NO_CONSUME, + TYPE_REST_VERBATIM}, 0, + "FILE [ARG ...]", + "Load an initial ramdisk FILE for a Linux format boot image and set the" + " appropriate parameters in the Linux setup area in memory."}, + /* NOTE: install unsupported. */ + /* FIXME: ioprobe unsupported. */ + /* FIXME: really support --no-mem-option. */ + {"kernel", "legacy_kernel %s %s '%s' %s\n", NULL, 0, + 4, {TYPE_TYPE_OR_NOMEM_OPTION, TYPE_TYPE_OR_NOMEM_OPTION, + TYPE_FILE_NO_CONSUME, TYPE_REST_VERBATIM}, 0, + "[--no-mem-option] [--type=TYPE] FILE [ARG ...]", + "Attempt to load the primary boot image from FILE. The rest of the" + " line is passed verbatim as the \"kernel command line\". Any modules" + " must be reloaded after using this command. The option --type is used" + " to suggest what type of kernel to be loaded. TYPE must be either of" + " \"netbsd\", \"freebsd\", \"openbsd\", \"linux\", \"biglinux\" and" + " \"multiboot\". The option --no-mem-option tells GRUB not to pass a" + " Linux's mem option automatically."}, + {"lock", "if ! authenticate legacy; then return; fi", NULL, 0, 0, {}, 0, + 0, "Break a command execution unless the user is authenticated."}, + {"makeactive", "parttool \"$root\" boot+\n", NULL, 0, 0, {}, 0, 0, + "Set the active partition on the root disk to GRUB's root device." + " This command is limited to _primary_ PC partitions on a hard disk."}, + {"map", "drivemap '%s' '%s'\n", NULL, 0, + 2, {TYPE_PARTITION, TYPE_PARTITION}, + FLAG_IGNORE_REST, "TO_DRIVE FROM_DRIVE", + "Map the drive FROM_DRIVE to the drive TO_DRIVE. This is necessary" + " when you chain-load some operating systems, such as DOS, if such an" + " OS resides at a non-first drive."}, + /* NOTE: md5crypt unsupported since GRUB has not enough entropy and this + hash shouldn't be used anymore. */ + {"module", "legacy_initrd '%s' %s\n", NULL, 0, 2, {TYPE_FILE_NO_CONSUME, + TYPE_REST_VERBATIM}, 0, + "FILE [ARG ...]", + "Load a boot module FILE for a Multiboot format boot image (no" + " interpretation of the file contents is made, so users of this" + " command must know what the kernel in question expects). The" + " rest of the line is passed as the \"module command line\", like" + " the `kernel' command."}, + {"modulenounzip", "legacy_initrd_nounzip '%s' %s\n", NULL, 0, 2, + {TYPE_FILE_NO_CONSUME, TYPE_REST_VERBATIM}, 0, + "FILE [ARG ...]", + "The same as `module', except that automatic decompression is" + " disabled."}, + {"pager", "set pager=%s; if [ \"$pager\" = 0 ]; then " + " echo Internal pager is now off; else " + "echo Internal pager is now on; fi\n", NULL, 0, + 1, {TYPE_BOOL}, FLAG_FALLBACK_AVAILABLE, "[FLAG]", + "Toggle pager mode with no argument. If FLAG is given and its value" + " is `on', turn on the mode. If FLAG is `off', turn off the mode."}, + {"pager", + "if [ \"$pager\" = 1 ]; then pager=0; echo Internal pager is now off;" + "else pager=1; echo Internal pager is now on; fi\n", NULL, 0, 0, {}, + FLAG_FALLBACK, NULL, NULL}, + /* FIXME: partnew unsupported. */ + {"parttype", "parttool '%s' type=%s\n", NULL, 0, + 2, {TYPE_PARTITION, TYPE_INT}, 0, + "PART TYPE", "Change the type of the partition PART to TYPE."}, + {"password", "if [ \"$superusers\" = "" ]; then superusers=legacy; fi;\n" + "legacy_password %s '%s'\n", + "menuentry \"Superuser menu\" --users \"legacy\" { configfile '%s'; }\n", + 2, 3, {TYPE_OPTION, TYPE_VERBATIM, TYPE_FILE}, + FLAG_IGNORE_REST | FLAG_FALLBACK_AVAILABLE | FLAG_NO_MENUENTRY, + "[--md5] PASSWD [FILE]", + "If used in the first section of a menu file, disable all" + " interactive editing control (menu entry editor and" + " command line). If the password PASSWD is entered, it loads the" + " FILE as a new config file and restarts the GRUB Stage 2. If you" + " omit the argument FILE, then GRUB just unlocks privileged" + " instructions. You can also use it in the script section, in" + " which case it will ask for the password, before continuing." + " The option --md5 tells GRUB that PASSWD is encrypted with" + " md5crypt."}, + {"password", "if [ \"$superusers\" = "" ]; then superusers=legacy; fi;\n" + "legacy_password %s '%s'\n", NULL, 0, 2, {TYPE_OPTION, TYPE_VERBATIM}, + FLAG_IGNORE_REST | FLAG_FALLBACK | FLAG_NO_MENUENTRY, NULL, NULL}, + {"password", "if legacy_check_password %s '%s'; then configfile '%s'; " + "else return; fi\n", NULL, 2, 3, {TYPE_OPTION, TYPE_VERBATIM, TYPE_FILE}, + FLAG_IGNORE_REST | FLAG_FALLBACK_AVAILABLE | FLAG_MENUENTRY_ONLY, + NULL, NULL}, + {"password", "if ! legacy_check_password %s '%s'; then return fi;\n", + NULL, 0, 2, {TYPE_OPTION, TYPE_VERBATIM}, + FLAG_IGNORE_REST | FLAG_FALLBACK | FLAG_MENUENTRY_ONLY, NULL, NULL}, + /* NOTE: GRUB2 has a design principle of not eternally waiting for user + input. 60 seconds should be enough. + */ + {"pause", "echo %s; if ! sleep -i 60; then return; fi\n", NULL, 0, 1, + {TYPE_REST_VERBATIM}, 0, + "[MESSAGE ...]", "Print MESSAGE, then wait until a key is pressed."}, + {"print", "echo %s\n", NULL, 0, 1, + {TYPE_REST_VERBATIM}, 0, + "[MESSAGE ...]", "Print MESSAGE."}, + /* FIXME: quit unsupported. */ + /* FIXME: rarp unsupported. */ + {"read", "read_dword %s\n", NULL, 0, 1, {TYPE_INT}, 0, "ADDR", + "Read a 32-bit value from memory at address ADDR and" + " display it in hex format."}, + {"reboot", "reboot\n", NULL, 0, 0, {}, 0, 0, "Reboot your system."}, + {"root", "set root='%s'; set legacy_hdbias='%s'\n", NULL, 0, + 2, {TYPE_PARTITION, TYPE_INT}, FLAG_FALLBACK_AVAILABLE, + "[DEVICE [HDBIAS]]", + "Set the current \"root device\" to the device DEVICE, then" + " attempt to mount it to get the partition size (for passing the" + " partition descriptor in `ES:ESI', used by some chain-loaded" + " bootloaders), the BSD drive-type (for booting BSD kernels using" + " their native boot format), and correctly determine " + " the PC partition where a BSD sub-partition is located. The" + " optional HDBIAS parameter is a number to tell a BSD kernel" + " how many BIOS drive numbers are on controllers before the current" + " one. For example, if there is an IDE disk and a SCSI disk, and your" + " FreeBSD root partition is on the SCSI disk, then use a `1' for HDBIAS."}, + {"root", "echo \"$root\"\n", NULL, 0, 0, {}, FLAG_FALLBACK, NULL, NULL}, + {"rootnoverify", "set root='%s'; set legacy_hdbias='%s'\n", NULL, 0, + 2, {TYPE_PARTITION, TYPE_INT}, 0, + "[DEVICE [HDBIAS]]", + "Similar to `root', but don't attempt to mount the partition. This" + " is useful for when an OS is outside of the area of the disk that" + " GRUB can read, but setting the correct root device is still" + " desired. Note that the items mentioned in `root' which" + " derived from attempting the mount will NOT work correctly."}, + {"rootnoverify", "echo \"$root\"\n", NULL, 0, + 0, {}, FLAG_FALLBACK, NULL, NULL}, + /* FIXME: support saving NUM and fallback. */ + {"savedefault", "saved_entry=${chosen}; save_env saved_entry\n", NULL, 0, + 0, {}, 0, "[NUM | `fallback']", + "Save the current entry as the default boot entry if no argument is" + " specified. If a number is specified, this number is saved. If" + " `fallback' is used, next fallback entry is saved."}, + {"serial", "serial %s\n", NULL, 0, 1, {TYPE_REST_VERBATIM}, 0, + "[--unit=UNIT] [--port=PORT] [--speed=SPEED] [--word=WORD] " + "[--parity=PARITY] [--stop=STOP] [--device=DEV]", + "Initialize a serial device. UNIT is a digit that specifies which serial" + " device is used (e.g. 0 == COM1). If you need to specify the port number," + " set it by --port. SPEED is the DTE-DTE speed. WORD is the word length," + " PARITY is the type of parity, which is one of `no', `odd' and `even'." + " STOP is the length of stop bit(s). The option --device can be used only" + " in the grub shell, which specifies the file name of a tty device. The" + " default values are COM1, 9600, 8N1."}, + /* FIXME: shade unsupported. */ + /* FIXME: silent unsupported. */ + /* FIXME: splashimage unsupported. */ + /* FIXME: setkey unsupported. */ /* NUL_TERMINATE */ + /* NOTE: setup unsupported. */ + /* FIXME: --no-echo, --no-edit unsupported. */ + /* NOTE: both terminals are activated so --silent and --timeout + are useless. */ + /* FIXME: graphics unsupported. */ + {"terminal", NULL, NULL, 0, 0, {}, FLAG_TERMINAL | FLAG_IGNORE_REST, + "[--dumb] [--no-echo] [--no-edit] [--timeout=SECS] [--lines=LINES] " + "[--silent] [console] [serial] [hercules] [graphics]", + "Select a terminal. When multiple terminals are specified, wait until" + " you push any key to continue. If both console and serial are specified," + " the terminal to which you input a key first will be selected. If no" + " argument is specified, print current setting. The option --dumb" + " specifies that your terminal is dumb, otherwise, vt100-compatibility" + " is assumed. If you specify --no-echo, input characters won't be echoed." + " If you specify --no-edit, the BASH-like editing feature will be disabled." + " If --timeout is present, this command will wait at most for SECS" + " seconds. The option --lines specifies the maximum number of lines." + " The option --silent is used to suppress messages."}, + /* FIXME: terminfo unsupported. */ /* NUL_TERMINATE */ + {"testload", "testload '%s'\n", NULL, 0, 1, {TYPE_FILE}, 0, "FILE", + "Read the entire contents of FILE in several different ways and" + " compares them, to test the filesystem code. " + " If this test succeeds, then a good next" + " step is to try loading a kernel."}, + {"testvbe", "insmod vbe; videotest '%s'\n", NULL, 0, 1, {TYPE_VBE_MODE}, 0, + "MODE", "Test the VBE mode MODE. Hit any key to return."}, + /* FIXME: tftpserver unsupported. */ + {"timeout", "set timeout=%s\n", NULL, 0, 1, {TYPE_INT}, 0, "SEC", + "Set a timeout, in SEC seconds, before automatically booting the" + " default entry (normally the first entry defined)."}, + {"title", NULL, NULL, 0, 0, {}, FLAG_TITLE, "NAME ...", + "Start a new boot entry, and set its name to the contents of the" + " rest of the line, starting with the first non-space character."}, + {"unhide", "parttool '%s' hidden-\n", NULL, 0, + 1, {TYPE_PARTITION}, 0, "PARTITION", + "Unhide PARTITION by clearing the \"hidden\" bit in its" + " partition type code."}, + /* FIXME: uppermem unsupported. */ + {"uuid", "search --set=root --fs-uuid '%s'\n", NULL, 0, 1, {TYPE_VERBATIM}, + 0, "UUID", "Find root by UUID"}, + {"vbeprobe", "insmod vbe; videoinfo '%s'\n", NULL, 0, 1, {TYPE_VBE_MODE}, + FLAG_FALLBACK_AVAILABLE, "[MODE]", + "Probe VBE information. If the mode number MODE is specified, show only" + " the information about only the mode."}, + {"vbeprobe", "insmod vbe; videoinfo\n", NULL, 0, 0, {}, + FLAG_FALLBACK, NULL, NULL} + /* FIXME: verbose unsupported. */ + /* FIXME: version unsupported. */ + /* FIXME: viewport unsupported. */ + }; + +char * +grub_legacy_escape (const char *in, grub_size_t len) +{ + char *ptr; + char *ret; + char saved; + int overhead = 0; + + for (ptr = (char*)in; ptr < in + len && *ptr; ptr++) + if (*ptr == '\'') + overhead += 3; + ret = grub_malloc (ptr - in + overhead + 1); + if (!ret) + return NULL; + + ptr = (char*)in; + saved = ptr[len]; + ptr[len] = '\0'; + grub_strchrsub (ret, ptr, '\'', "'\\''"); + ptr[len] = saved; + return ret; +} + +static char * +adjust_file (const char *in, grub_size_t len) +{ + const char *comma, *ptr, *rest; + char *ret, *outptr; + int overhead = 0; + int part = -1, subpart = -1; + if (in[0] != '(') + return grub_legacy_escape (in, len); + for (ptr = in + 1; ptr < in + len && *ptr && *ptr != ')' + && *ptr != ','; ptr++) + if (*ptr == '\'' || *ptr == '\\') + overhead++; + comma = ptr; + if (*comma == ')' && comma - in == 3 + && in[1] == 'n' && in[2] == 'd') + { + rest = comma + 1; + for (ptr = rest; ptr < in + len && *ptr; ptr++) + if (*ptr == '\'' || *ptr == '\\') + overhead++; + + ret = grub_malloc (ptr - in + overhead + 15); + if (!ret) + return NULL; + + outptr = grub_stpcpy (ret, "(tftp)");; + for (ptr = rest; ptr < in + len; ptr++) + { + if (*ptr == '\'' || *ptr == '\\') + *outptr++ = '\\'; + + *outptr++ = *ptr; + } + *outptr = 0; + return ret; + } + if (*comma != ',') + return grub_legacy_escape (in, len); + part = grub_strtoull (comma + 1, &rest, 0); + if (rest[0] == ',' && rest[1] >= 'a' && rest[1] <= 'z') + { + subpart = rest[1] - 'a'; + rest += 2; + } + for (ptr = rest; ptr < in + len && *ptr; ptr++) + if (*ptr == '\'' || *ptr == '\\') + overhead++; + + /* 35 is enough for any 2 numbers. */ + ret = grub_malloc (ptr - in + overhead + 35 + 5); + if (!ret) + return NULL; + + outptr = ret; + for (ptr = in; ptr < in + len && ptr <= comma; ptr++) + { + if (*ptr == '\'' || *ptr == '\\') + *outptr++ = '\\'; + + *outptr++ = *ptr; + } + if (subpart != -1) + grub_snprintf (outptr, 35, "%d,%d", part + 1, subpart + 1); + else + grub_snprintf (outptr, 35, "%d", part + 1); + while (*outptr) + outptr++; + for (ptr = rest; ptr < in + len; ptr++) + { + if (*ptr == '\'' || *ptr == '\\') + *outptr++ = '\\'; + + *outptr++ = *ptr; + } + *outptr = 0; + return ret; +} + +static int +check_option (const char *a, const char *b, grub_size_t len) +{ + if (grub_strlen (b) != len) + return 0; + return grub_strncmp (a, b, len) == 0; +} + +static int +is_option (enum arg_type opt, const char *curarg, grub_size_t len) +{ + switch (opt) + { + case TYPE_WITH_CONFIGFILE_OPTION: + return check_option (curarg, "--with-configfile", len); + case TYPE_NOAPM_OPTION: + return check_option (curarg, "--no-apm", len); + case TYPE_FORCE_OPTION: + return check_option (curarg, "--force", len); + case TYPE_TYPE_OR_NOMEM_OPTION: + return check_option (curarg, "--type=netbsd", len) + || check_option (curarg, "--type=freebsd", len) + || check_option (curarg, "--type=openbsd", len) + || check_option (curarg, "--type=linux", len) + || check_option (curarg, "--type=biglinux", len) + || check_option (curarg, "--type=multiboot", len) + || check_option (curarg, "--no-mem-option", len); + case TYPE_OPTION: + return (len >= 2 && curarg[0] == '-' && curarg[1] == '-'); + default: + return 0; + } +} + +char * +grub_legacy_parse (const char *buf, char **entryname, char **suffix) +{ + const char *ptr; + const char *cmdname; + unsigned i, cmdnum; + char *args[ARRAY_SIZE (legacy_commands[0].argt)]; + + *suffix = NULL; + + for (ptr = buf; *ptr && grub_isspace (*ptr); ptr++); + if (!*ptr || *ptr == '#') + { + char *ret; + int len = grub_strlen (buf); + ret = grub_malloc (len + 2); + grub_memcpy (ret, buf, len); + if (len && ret[len - 1] == '\n') + ret[len] = 0; + else + { + ret[len] = '\n'; + ret[len + 1] = 0; + } + return ret; + } + + cmdname = ptr; + for (ptr = buf; *ptr && !grub_isspace (*ptr) && *ptr != '='; ptr++); + + for (cmdnum = 0; cmdnum < ARRAY_SIZE (legacy_commands); cmdnum++) + if (grub_strncmp (legacy_commands[cmdnum].name, cmdname, ptr - cmdname) == 0 + && legacy_commands[cmdnum].name[ptr - cmdname] == 0 + && (!(*entryname != NULL && (legacy_commands[cmdnum].flags + & FLAG_NO_MENUENTRY))) + && (!(*entryname == NULL && (legacy_commands[cmdnum].flags + & FLAG_MENUENTRY_ONLY)))) + break; + if (cmdnum == ARRAY_SIZE (legacy_commands)) + return grub_xasprintf ("# Unsupported legacy command: %s\n", buf); + + for (; grub_isspace (*ptr) || *ptr == '='; ptr++); + + if (legacy_commands[cmdnum].flags & FLAG_TITLE) + { + const char *ptr2; + ptr2 = ptr + grub_strlen (ptr); + while (ptr2 > ptr && grub_isspace (*(ptr2 - 1))) + ptr2--; + *entryname = grub_strndup (ptr, ptr2 - ptr); + return NULL; + } + + if (legacy_commands[cmdnum].flags & FLAG_TERMINAL) + { + int dumb = 0, lines = 24; +#ifdef TODO + int no_echo = 0, no_edit = 0; +#endif + int hercules = 0; + int console = 0, serial = 0, graphics = 0; + /* Big enough for any possible resulting command. */ + char outbuf[512] = ""; + char *outptr; + while (*ptr) + { + /* "[--timeout=SECS] [--silent]" + " [console] [serial] [hercules]"*/ + if (grub_memcmp (ptr, "--dumb", sizeof ("--dumb") - 1) == 0) + dumb = 1; +#ifdef TODO + if (grub_memcmp (ptr, "--no-echo", sizeof ("--no-echo") - 1) == 0) + no_echo = 1; + + if (grub_memcmp (ptr, "--no-edit", sizeof ("--no-edit") - 1) == 0) + no_edit = 1; +#endif + if (grub_memcmp (ptr, "--lines=", sizeof ("--lines=") - 1) == 0) + { + lines = grub_strtoul (ptr + sizeof ("--lines=") - 1, 0, 0); + if (grub_errno) + { + lines = 24; + grub_errno = GRUB_ERR_NONE; + } + } + + if (grub_memcmp (ptr, "console", sizeof ("console") - 1) == 0) + console = 1; + + if (grub_memcmp (ptr, "serial", sizeof ("serial") - 1) == 0) + serial = 1; + if (grub_memcmp (ptr, "hercules", sizeof ("hercules") - 1) == 0) + hercules = 1; + if (grub_memcmp (ptr, "graphics", sizeof ("graphics") - 1) == 0) + graphics = 1; + while (*ptr && !grub_isspace (*ptr)) + ptr++; + while (*ptr && grub_isspace (*ptr)) + ptr++; + } + + if (!console && !serial && !hercules && !graphics) + return grub_strdup ("terminal_input; terminal_output; terminfo\n"); + + outptr = outbuf; + + if (graphics) + outptr = grub_stpcpy (outptr, "insmod all_video; "); + + outptr = grub_stpcpy (outptr, "terminal_input "); + if (serial) + outptr = grub_stpcpy (outptr, "serial "); + if (console || hercules || graphics) + outptr = grub_stpcpy (outptr, "console "); + outptr = grub_stpcpy (outptr, "; terminal_output "); + if (serial) + outptr = grub_stpcpy (outptr, "serial "); + if (console) + outptr = grub_stpcpy (outptr, "console "); + if (hercules) + outptr = grub_stpcpy (outptr, "mda_text "); + if (graphics) + outptr = grub_stpcpy (outptr, "gfxterm "); + outptr = grub_stpcpy (outptr, "; "); + *outptr = '\0'; + if (serial) + { + grub_snprintf (outptr, outbuf + sizeof (outbuf) - outptr, + "terminfo serial -g 80x%d %s; ", + lines, dumb ? "dumb" : "vt100"); + outptr += grub_strlen (outptr); + } + + grub_strcpy (outptr, "\n"); + + return grub_strdup (outbuf); + } + + grub_memset (args, 0, sizeof (args)); + + { + int hold_arg = 0; + const char *curarg = NULL; + for (i = 0; i < legacy_commands[cmdnum].argc; i++) + { + grub_size_t curarglen; + if (hold_arg) + { + ptr = curarg; + hold_arg = 0; + } + for (; grub_isspace (*ptr); ptr++); + curarg = ptr; + if (!*curarg) + break; + for (; *ptr && !grub_isspace (*ptr); ptr++); + if (i != legacy_commands[cmdnum].argc - 1 + || (legacy_commands[cmdnum].flags & FLAG_IGNORE_REST)) + curarglen = ptr - curarg; + else + { + curarglen = grub_strlen (curarg); + while (curarglen > 0 && grub_isspace (curarg[curarglen - 1])) + curarglen--; + } + if (*ptr) + ptr++; + switch (legacy_commands[cmdnum].argt[i]) + { + case TYPE_FILE_NO_CONSUME: + hold_arg = 1; + /* Fallthrough. */ + case TYPE_PARTITION: + case TYPE_FILE: + args[i] = adjust_file (curarg, curarglen); + break; + + case TYPE_REST_VERBATIM: + { + char *outptr, *outptr0; + int overhead = 3; + ptr = curarg; + while (*ptr) + { + for (; *ptr && grub_isspace (*ptr); ptr++); + for (; *ptr && !grub_isspace (*ptr); ptr++) + if (*ptr == '\'') + overhead += 3; + if (*ptr) + ptr++; + overhead += 3; + } + + outptr0 = args[i] = grub_malloc (overhead + (ptr - curarg)); + if (!outptr0) + return NULL; + ptr = curarg; + outptr = outptr0; + while (*ptr) + { + for (; *ptr && grub_isspace (*ptr); ptr++); + if (outptr != outptr0) + *outptr++ = ' '; + *outptr++ = '\''; + for (; *ptr && !grub_isspace (*ptr); ptr++) + { + if (*ptr == '\'') + { + *outptr++ = '\''; + *outptr++ = '\\'; + *outptr++ = '\''; + *outptr++ = '\''; + } + else + *outptr++ = *ptr; + } + *outptr++ = '\''; + if (*ptr) + ptr++; + } + *outptr++ = 0; + } + break; + + case TYPE_VERBATIM: + args[i] = grub_legacy_escape (curarg, curarglen); + break; + case TYPE_WITH_CONFIGFILE_OPTION: + case TYPE_FORCE_OPTION: + case TYPE_NOAPM_OPTION: + case TYPE_TYPE_OR_NOMEM_OPTION: + case TYPE_OPTION: + if (is_option (legacy_commands[cmdnum].argt[i], curarg, curarglen)) + { + args[i] = grub_strndup (curarg, curarglen); + break; + } + args[i] = grub_strdup (""); + hold_arg = 1; + break; + case TYPE_INT: + { + const char *brk; + int base = 10; + brk = curarg; + if (brk[0] == '0' && brk[1] == 'x') + { + base = 16; + brk += 2; + } + else if (brk[0] == '0') + base = 8; + for (; *brk && brk < curarg + curarglen; brk++) + { + if (base == 8 && (*brk == '8' || *brk == '9')) + break; + if (grub_isdigit (*brk)) + continue; + if (base != 16) + break; + if (!(*brk >= 'a' && *brk <= 'f') + && !(*brk >= 'A' && *brk <= 'F')) + break; + } + if (brk == curarg) + args[i] = grub_strdup ("0"); + else + args[i] = grub_strndup (curarg, brk - curarg); + } + break; + case TYPE_VBE_MODE: + { + unsigned mod; + struct grub_vesa_mode_table_entry *modedesc; + + mod = grub_strtoul (curarg, 0, 0); + if (grub_errno) + { + mod = 0; + grub_errno = GRUB_ERR_NONE; + } + if (mod < GRUB_VESA_MODE_TABLE_START + || mod > GRUB_VESA_MODE_TABLE_END) + { + args[i] = grub_strdup ("auto"); + break; + } + modedesc = &grub_vesa_mode_table[mod - GRUB_VESA_MODE_TABLE_START]; + if (!modedesc->width) + { + args[i] = grub_strdup ("auto"); + break; + } + args[i] = grub_xasprintf ("%ux%ux%u", + modedesc->width, modedesc->height, + modedesc->depth); + break; + } + case TYPE_BOOL: + if (curarglen == 2 && curarg[0] == 'o' && curarg[1] == 'n') + args[i] = grub_strdup ("1"); + else + args[i] = grub_strdup ("0"); + break; + } + } + } + + while (legacy_commands[cmdnum].argc > 0 + && args[legacy_commands[cmdnum].argc - 1] == NULL + && (legacy_commands[cmdnum].flags & FLAG_FALLBACK_AVAILABLE) + && args[legacy_commands[cmdnum + 1].argc] == NULL) + cmdnum++; + + for (; i < legacy_commands[cmdnum].argc; i++) + switch (legacy_commands[cmdnum].argt[i]) + { + case TYPE_FILE_NO_CONSUME: + case TYPE_PARTITION: + case TYPE_FILE: + case TYPE_REST_VERBATIM: + case TYPE_VERBATIM: + case TYPE_WITH_CONFIGFILE_OPTION: + case TYPE_FORCE_OPTION: + case TYPE_NOAPM_OPTION: + case TYPE_TYPE_OR_NOMEM_OPTION: + case TYPE_OPTION: + args[i] = grub_strdup (""); + break; + case TYPE_BOOL: + case TYPE_INT: + args[i] = grub_strdup ("0"); + break; + case TYPE_VBE_MODE: + args[i] = grub_strdup ("auto"); + break; + } + + if (legacy_commands[cmdnum].flags & FLAG_COLOR_INVERT) + { + char *corig = args[legacy_commands[cmdnum].argc - 1]; + char *slash = grub_strchr (corig, '/'); + char *invert; + grub_size_t len; + + len = grub_strlen (corig); + if (!slash) + { + grub_error (GRUB_ERR_BAD_ARGUMENT, N_("invalid color specification `%s'"), + args[0]); + return NULL; + } + invert = grub_malloc (len + 1); + if (!invert) + return NULL; + grub_memcpy (invert, slash + 1, len - (slash - corig) - 1); + invert[len - (slash - args[0]) - 1] = '/'; + grub_memcpy (invert + len - (slash - corig), corig, slash - corig); + invert[len] = 0; + args[legacy_commands[cmdnum].argc] = invert; + } + + if (legacy_commands[cmdnum].suffix) + { + *suffix = grub_xasprintf (legacy_commands[cmdnum].suffix, + args[legacy_commands[cmdnum].suffixarg]); + if (*suffix) + return NULL; + } + + { + char *ret = grub_xasprintf (legacy_commands[cmdnum].map, args[0], args[1], + args[2], args[3]); + grub_free (args[0]); + grub_free (args[1]); + grub_free (args[2]); + grub_free (args[3]); + return ret; + } +} |