GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy.c

   1 /******************************************************************************
   2  * ventoy.c
   3  *
   4  * Copyright (c) 2020, longpanda <admin@ventoy.net>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include <grub/types.h>
  22 #include <grub/misc.h>
  23 #include <grub/mm.h>
  24 #include <grub/err.h>
  25 #include <grub/dl.h>
  26 #include <grub/disk.h>
  27 #include <grub/device.h>
  28 #include <grub/term.h>
  29 #include <grub/partition.h>
  30 #include <grub/file.h>
  31 #include <grub/normal.h>
  32 #include <grub/extcmd.h>
  33 #include <grub/datetime.h>
  34 #include <grub/net.h>
  35 #include <grub/misc.h>
  36 #include <grub/kernel.h>
  37 #include <grub/time.h>
  38 #include <grub/memory.h>
  39 #ifdef GRUB_MACHINE_EFI
  40 #include <grub/efi/efi.h>
  41 #include <grub/efi/memory.h>
  42 #endif
  43 #include <grub/ventoy.h>
  44 #include "ventoy_def.h"
  45
  46 GRUB_MOD_LICENSE ("GPLv3+");
  47
  48 int g_ventoy_debug = 0;
  49 static int g_efi_os = 0xFF;
  50 grub_uint32_t g_ventoy_plat_data;
  51
  52 void ventoy_debug(const char *fmt, ...)
  53 {
  54     va_list args;
  55
  56     va_start (args, fmt);
  57     grub_vprintf (fmt, args);
  58     va_end (args);
  59 }
  60
  61 void ventoy_str_tolower(char *str)
  62 {
  63     while (*str)
  64     {
  65         *str = grub_tolower(*str);
  66         str++;
  67     }
  68 }
  69
  70 void ventoy_str_toupper(char *str)
  71 {
  72     while (*str)
  73     {
  74         *str = grub_toupper(*str);
  75         str++;
  76     }
  77 }
  78
  79 char *ventoy_str_last(char *str, char ch)
  80 {
  81     char *pos = NULL;
  82     char *last = NULL;
  83
  84     if (!str)
  85     {
  86         return NULL;
  87     }
  88
  89     for (pos = str; *pos; pos++)
  90     {
  91         if (*pos == ch)
  92         {
  93             last = pos;
  94         }
  95     }
  96
  97     return last;
  98 }
  99
 100 int ventoy_str_all_digit(const char *str)
 101 {
 102     if (NULL == str || 0 == *str)
 103     {
 104         return 0;
 105     }
 106
 107     while (*str)
 108     {
 109         if (*str < '0' || *str > '9')
 110         {
 111             return 0;
 112         }
 113     }
 114
 115     return 1;
 116 }
 117
 118 int ventoy_strcmp(const char *pattern, const char *str)
 119 {
 120     while (*pattern && *str)
 121     {
 122         if ((*pattern != *str) && (*pattern != '*'))
 123             break;
 124
 125         pattern++;
 126         str++;
 127     }
 128
 129     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 130 }
 131
 132 int ventoy_strncmp (const char *pattern, const char *str, grub_size_t n)
 133 {
 134     if (n == 0)
 135         return 0;
 136
 137     while (*pattern && *str && --n)
 138     {
 139         if ((*pattern != *str) && (*pattern != '*'))
 140             break;
 141
 142         pattern++;
 143         str++;
 144     }
 145
 146     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 147 }
 148
 149 void ventoy_debug_dump_guid(const char *prefix, grub_uint8_t *guid)
 150 {
 151     int i;
 152
 153     if (!g_ventoy_debug)
 154     {
 155         return;
 156     }
 157
 158     debug("%s", prefix);
 159     for (i = 0; i < 16; i++)
 160     {
 161         grub_printf("%02x ", guid[i]);
 162     }
 163     grub_printf("\n");
 164 }
 165
 166 int ventoy_is_efi_os(void)
 167 {
 168     if (g_efi_os > 1)
 169     {
 170         g_efi_os = (grub_strstr(GRUB_PLATFORM, "efi")) ? 1 : 0;
 171     }
 172
 173     return g_efi_os;
 174 }
 175
 176 void * ventoy_alloc_chain(grub_size_t size)
 177 {
 178     void *p = NULL;
 179
 180     p = grub_malloc(size);
 181 #ifdef GRUB_MACHINE_EFI
 182     if (!p)
 183     {
 184         p = grub_efi_allocate_any_pages(GRUB_EFI_BYTES_TO_PAGES(size));
 185     }
 186 #endif
 187
 188     return p;
 189 }
 190
 191 void ventoy_memfile_env_set(const char *prefix, const void *buf, unsigned long long len)
 192 {
 193     char name[128];
 194     char val[64];
 195
 196     grub_snprintf(name, sizeof(name), "%s_addr", prefix);
 197     grub_snprintf(val, sizeof(val), "0x%llx", (ulonglong)(ulong)buf);
 198     grub_env_set(name, val);
 199
 200     grub_snprintf(name, sizeof(name), "%s_size", prefix);
 201     grub_snprintf(val, sizeof(val), "%llu", len);
 202     grub_env_set(name, val);
 203
 204     return;
 205 }
 206
 207 static int ventoy_arch_mode_init(void)
 208 {
 209     #ifdef GRUB_MACHINE_EFI
 210     if (grub_strcmp(GRUB_TARGET_CPU, "i386") == 0)
 211     {
 212         g_ventoy_plat_data = VTOY_PLAT_I386_UEFI;
 213         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "ia32");
 214     }
 215     else if (grub_strcmp(GRUB_TARGET_CPU, "arm64") == 0)
 216     {
 217         g_ventoy_plat_data = VTOY_PLAT_ARM64_UEFI;
 218         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "aa64");
 219     }
 220     else if (grub_strcmp(GRUB_TARGET_CPU, "mips64el") == 0)
 221     {
 222         g_ventoy_plat_data = VTOY_PLAT_MIPS_UEFI;
 223         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "mips");
 224     }
 225     else
 226     {
 227         g_ventoy_plat_data = VTOY_PLAT_X86_64_UEFI;
 228         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "uefi");
 229     }
 230 #else
 231     g_ventoy_plat_data = VTOY_PLAT_X86_LEGACY;
 232     grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "legacy");
 233 #endif
 234
 235     return 0;
 236 }
 237
 238 #ifdef GRUB_MACHINE_EFI
 239 static void ventoy_get_uefi_version(char *str, grub_size_t len)
 240 {
 241     grub_efi_uint8_t uefi_minor_1, uefi_minor_2;
 242
 243     uefi_minor_1 = (grub_efi_system_table->hdr.revision & 0xffff) / 10;
 244     uefi_minor_2 = (grub_efi_system_table->hdr.revision & 0xffff) % 10;
 245     grub_snprintf(str, len, "%d.%d", (grub_efi_system_table->hdr.revision >> 16), uefi_minor_1);
 246     if (uefi_minor_2)
 247         grub_snprintf(str, len, "%s.%d", str, uefi_minor_2);
 248 }
 249 #endif
 250
 251 static int ventoy_calc_totalmem(grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, void *data)
 252 {
 253     grub_uint64_t *total_mem = (grub_uint64_t *)data;
 254
 255     (void)addr;
 256     (void)type;
 257
 258     *total_mem += size;
 259
 260     return 0;
 261 }
 262
 263 static int ventoy_hwinfo_init(void)
 264 {
 265     char str[256];
 266     grub_uint64_t total_mem = 0;
 267
 268     grub_machine_mmap_iterate(ventoy_calc_totalmem, &total_mem);
 269
 270     grub_snprintf(str, sizeof(str), "%ld", (long)(total_mem / VTOY_SIZE_1MB));
 271     ventoy_env_export("grub_total_ram", str);
 272
 273 #ifdef GRUB_MACHINE_EFI
 274     ventoy_get_uefi_version(str, sizeof(str));
 275     ventoy_env_export("grub_uefi_version", str);
 276 #else
 277     ventoy_env_export("grub_uefi_version", "NA");
 278 #endif
 279
 280     return 0;
 281 }
 282
 283 static global_var_cfg g_global_vars[] =
 284 {
 285     { "gfxmode",            "1024x768",   NULL },
 286     { ventoy_left_key,      "5%",         NULL },
 287     { ventoy_top_key,       "95%",        NULL },
 288     { ventoy_color_key,     "#0000ff",    NULL },
 289     { NULL,                 NULL,         NULL }
 290 };
 291
 292 static const char * ventoy_global_var_read_hook(struct grub_env_var *var, const char *val)
 293 {
 294     int i;
 295
 296     for (i = 0; g_global_vars[i].name; i++)
 297     {
 298         if (grub_strcmp(g_global_vars[i].name, var->name) == 0)
 299         {
 300             return g_global_vars[i].value;
 301         }
 302     }
 303
 304     return val;
 305 }
 306
 307 static char * ventoy_global_var_write_hook(struct grub_env_var *var, const char *val)
 308 {
 309     int i;
 310
 311     for (i = 0; g_global_vars[i].name; i++)
 312     {
 313         if (grub_strcmp(g_global_vars[i].name, var->name) == 0)
 314         {
 315             grub_check_free(g_global_vars[i].value);
 316             g_global_vars[i].value = grub_strdup(val);
 317             break;
 318         }
 319     }
 320
 321     return grub_strdup(val);
 322 }
 323
 324 int ventoy_global_var_init(void)
 325 {
 326     int i;
 327
 328     for (i = 0; g_global_vars[i].name; i++)
 329     {
 330         g_global_vars[i].value = grub_strdup(g_global_vars[i].defval);
 331         ventoy_env_export(g_global_vars[i].name, g_global_vars[i].defval);
 332         grub_register_variable_hook(g_global_vars[i].name, ventoy_global_var_read_hook, ventoy_global_var_write_hook);
 333     }
 334
 335     return 0;
 336 }
 337
 338 static ctrl_var_cfg g_ctrl_vars[] =
 339 {
 340     { "VTOY_WIN11_BYPASS_CHECK",  1 },
 341     { "VTOY_WIN11_BYPASS_NRO",    1 },
 342     { "VTOY_LINUX_REMOUNT",       0 },
 343     { "VTOY_SECONDARY_BOOT_MENU", 1 },
 344     { NULL, 0 }
 345 };
 346
 347 static const char * ventoy_ctrl_var_read_hook(struct grub_env_var *var, const char *val)
 348 {
 349     int i;
 350
 351     for (i = 0; g_ctrl_vars[i].name; i++)
 352     {
 353         if (grub_strcmp(g_ctrl_vars[i].name, var->name) == 0)
 354         {
 355             return g_ctrl_vars[i].value ? "1" : "0";
 356         }
 357     }
 358
 359     return val;
 360 }
 361
 362 static char * ventoy_ctrl_var_write_hook(struct grub_env_var *var, const char *val)
 363 {
 364     int i;
 365
 366     for (i = 0; g_ctrl_vars[i].name; i++)
 367     {
 368         if (grub_strcmp(g_ctrl_vars[i].name, var->name) == 0)
 369         {
 370             if (val && val[0] == '1' && val[1] == 0)
 371             {
 372                 g_ctrl_vars[i].value = 1;
 373                 return grub_strdup("1");
 374             }
 375             else
 376             {
 377                 g_ctrl_vars[i].value = 0;
 378                 return grub_strdup("0");
 379             }
 380         }
 381     }
 382
 383     return grub_strdup(val);
 384 }
 385
 386 int ventoy_ctrl_var_init(void)
 387 {
 388     int i;
 389
 390     for (i = 0; g_ctrl_vars[i].name; i++)
 391     {
 392         ventoy_env_export(g_ctrl_vars[i].name, g_ctrl_vars[i].value ? "1" : "0");
 393         grub_register_variable_hook(g_ctrl_vars[i].name, ventoy_ctrl_var_read_hook, ventoy_ctrl_var_write_hook);
 394     }
 395
 396     return 0;
 397 }
 398
 399 GRUB_MOD_INIT(ventoy)
 400 {
 401     ventoy_hwinfo_init();
 402     ventoy_env_init();
 403     ventoy_arch_mode_init();
 404     ventoy_register_all_cmd();
 405 }
 406
 407 GRUB_MOD_FINI(ventoy)
 408 {
 409     ventoy_unregister_all_cmd();
 410 }
 411