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_str_all_alnum(const char *str)
 119 {
 120     if (NULL == str || 0 == *str)
 121     {
 122         return 0;
 123     }
 124
 125     while (*str)
 126     {
 127         if (!grub_isalnum(*str))
 128         {
 129             return 0;
 130         }
 131     }
 132
 133     return 1;
 134 }
 135
 136 int ventoy_str_len_alnum(const char *str, int len)
 137 {
 138     int i;
 139     int slen;
 140
 141     if (NULL == str || 0 == *str)
 142     {
 143         return 0;
 144     }
 145
 146     slen = grub_strlen(str);
 147     if (slen <= len)
 148     {
 149         return 0;
 150     }
 151
 152     for (i = 0; i < len; i++)
 153     {
 154         if (!grub_isalnum(str[i]))
 155         {
 156             return 0;
 157         }
 158     }
 159
 160     if (str[len] == 0 || grub_isspace(str[len]))
 161     {
 162         return 1;
 163     }
 164
 165     return 0;
 166 }
 167
 168 char * ventoy_str_basename(char *path)
 169 {
 170     char *pos = NULL;
 171
 172     pos = grub_strrchr(path, '/');
 173     if (pos)
 174     {
 175         pos++;
 176     }
 177     else
 178     {
 179         pos = path;
 180     }
 181
 182     return pos;
 183 }
 184
 185 int ventoy_str_chrcnt(const char *str, char c)
 186 {
 187     int n = 0;
 188
 189     if (str)
 190     {
 191         while (*str)
 192         {
 193             if (*str == c)
 194             {
 195                 n++;
 196             }
 197             str++;
 198         }
 199     }
 200
 201     return n;
 202 }
 203
 204 int ventoy_strcmp(const char *pattern, const char *str)
 205 {
 206     while (*pattern && *str)
 207     {
 208         if ((*pattern != *str) && (*pattern != '*'))
 209             break;
 210
 211         pattern++;
 212         str++;
 213     }
 214
 215     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 216 }
 217
 218 int ventoy_strncmp (const char *pattern, const char *str, grub_size_t n)
 219 {
 220     if (n == 0)
 221         return 0;
 222
 223     while (*pattern && *str && --n)
 224     {
 225         if ((*pattern != *str) && (*pattern != '*'))
 226             break;
 227
 228         pattern++;
 229         str++;
 230     }
 231
 232     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 233 }
 234
 235 grub_err_t ventoy_env_int_set(const char *name, int value)
 236 {
 237     char buf[16];
 238
 239     grub_snprintf(buf, sizeof(buf), "%d", value);
 240     return grub_env_set(name, buf);
 241 }
 242
 243 void ventoy_debug_dump_guid(const char *prefix, grub_uint8_t *guid)
 244 {
 245     int i;
 246
 247     if (!g_ventoy_debug)
 248     {
 249         return;
 250     }
 251
 252     debug("%s", prefix);
 253     for (i = 0; i < 16; i++)
 254     {
 255         grub_printf("%02x ", guid[i]);
 256     }
 257     grub_printf("\n");
 258 }
 259
 260 int ventoy_is_efi_os(void)
 261 {
 262     if (g_efi_os > 1)
 263     {
 264         g_efi_os = (grub_strstr(GRUB_PLATFORM, "efi")) ? 1 : 0;
 265     }
 266
 267     return g_efi_os;
 268 }
 269
 270 void * ventoy_alloc_chain(grub_size_t size)
 271 {
 272     void *p = NULL;
 273
 274     p = grub_malloc(size);
 275 #ifdef GRUB_MACHINE_EFI
 276     if (!p)
 277     {
 278         p = grub_efi_allocate_any_pages(GRUB_EFI_BYTES_TO_PAGES(size));
 279     }
 280 #endif
 281
 282     return p;
 283 }
 284
 285 void ventoy_memfile_env_set(const char *prefix, const void *buf, unsigned long long len)
 286 {
 287     char name[128];
 288     char val[64];
 289
 290     grub_snprintf(name, sizeof(name), "%s_addr", prefix);
 291     grub_snprintf(val, sizeof(val), "0x%llx", (ulonglong)(ulong)buf);
 292     grub_env_set(name, val);
 293
 294     grub_snprintf(name, sizeof(name), "%s_size", prefix);
 295     grub_snprintf(val, sizeof(val), "%llu", len);
 296     grub_env_set(name, val);
 297
 298     return;
 299 }
 300
 301 static int ventoy_arch_mode_init(void)
 302 {
 303     #ifdef GRUB_MACHINE_EFI
 304     if (grub_strcmp(GRUB_TARGET_CPU, "i386") == 0)
 305     {
 306         g_ventoy_plat_data = VTOY_PLAT_I386_UEFI;
 307         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "ia32");
 308     }
 309     else if (grub_strcmp(GRUB_TARGET_CPU, "arm64") == 0)
 310     {
 311         g_ventoy_plat_data = VTOY_PLAT_ARM64_UEFI;
 312         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "aa64");
 313     }
 314     else if (grub_strcmp(GRUB_TARGET_CPU, "mips64el") == 0)
 315     {
 316         g_ventoy_plat_data = VTOY_PLAT_MIPS_UEFI;
 317         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "mips");
 318     }
 319     else
 320     {
 321         g_ventoy_plat_data = VTOY_PLAT_X86_64_UEFI;
 322         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "uefi");
 323     }
 324 #else
 325     g_ventoy_plat_data = VTOY_PLAT_X86_LEGACY;
 326     grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "legacy");
 327 #endif
 328
 329     return 0;
 330 }
 331
 332 #ifdef GRUB_MACHINE_EFI
 333 static void ventoy_get_uefi_version(char *str, grub_size_t len)
 334 {
 335     grub_efi_uint8_t uefi_minor_1, uefi_minor_2;
 336
 337     uefi_minor_1 = (grub_efi_system_table->hdr.revision & 0xffff) / 10;
 338     uefi_minor_2 = (grub_efi_system_table->hdr.revision & 0xffff) % 10;
 339     grub_snprintf(str, len, "%d.%d", (grub_efi_system_table->hdr.revision >> 16), uefi_minor_1);
 340     if (uefi_minor_2)
 341         grub_snprintf(str, len, "%s.%d", str, uefi_minor_2);
 342 }
 343 #endif
 344
 345 static int ventoy_calc_totalmem(grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, void *data)
 346 {
 347     grub_uint64_t *total_mem = (grub_uint64_t *)data;
 348
 349     (void)addr;
 350     (void)type;
 351
 352     *total_mem += size;
 353
 354     return 0;
 355 }
 356
 357 static int ventoy_hwinfo_init(void)
 358 {
 359     char str[256];
 360     grub_uint64_t total_mem = 0;
 361
 362     grub_machine_mmap_iterate(ventoy_calc_totalmem, &total_mem);
 363
 364     grub_snprintf(str, sizeof(str), "%ld", (long)(total_mem / VTOY_SIZE_1MB));
 365     ventoy_env_export("grub_total_ram", str);
 366
 367 #ifdef GRUB_MACHINE_EFI
 368     ventoy_get_uefi_version(str, sizeof(str));
 369     ventoy_env_export("grub_uefi_version", str);
 370 #else
 371     ventoy_env_export("grub_uefi_version", "NA");
 372 #endif
 373
 374     return 0;
 375 }
 376
 377 static global_var_cfg g_global_vars[] =
 378 {
 379     { "gfxmode",            "1024x768",   NULL },
 380     { ventoy_left_key,      "5%",         NULL },
 381     { ventoy_top_key,       "95%",        NULL },
 382     { ventoy_color_key,     "#0000ff",    NULL },
 383     { NULL,                 NULL,         NULL }
 384 };
 385
 386 static const char * ventoy_global_var_read_hook(struct grub_env_var *var, const char *val)
 387 {
 388     int i;
 389
 390     for (i = 0; g_global_vars[i].name; i++)
 391     {
 392         if (grub_strcmp(g_global_vars[i].name, var->name) == 0)
 393         {
 394             return g_global_vars[i].value;
 395         }
 396     }
 397
 398     return val;
 399 }
 400
 401 static char * ventoy_global_var_write_hook(struct grub_env_var *var, const char *val)
 402 {
 403     int i;
 404
 405     for (i = 0; g_global_vars[i].name; i++)
 406     {
 407         if (grub_strcmp(g_global_vars[i].name, var->name) == 0)
 408         {
 409             grub_check_free(g_global_vars[i].value);
 410             g_global_vars[i].value = grub_strdup(val);
 411             break;
 412         }
 413     }
 414
 415     return grub_strdup(val);
 416 }
 417
 418 int ventoy_global_var_init(void)
 419 {
 420     int i;
 421
 422     for (i = 0; g_global_vars[i].name; i++)
 423     {
 424         g_global_vars[i].value = grub_strdup(g_global_vars[i].defval);
 425         ventoy_env_export(g_global_vars[i].name, g_global_vars[i].defval);
 426         grub_register_variable_hook(g_global_vars[i].name, ventoy_global_var_read_hook, ventoy_global_var_write_hook);
 427     }
 428
 429     return 0;
 430 }
 431
 432 static ctrl_var_cfg g_ctrl_vars[] =
 433 {
 434     { "VTOY_WIN11_BYPASS_CHECK",  1 },
 435     { "VTOY_WIN11_BYPASS_NRO",    1 },
 436     { "VTOY_LINUX_REMOUNT",       0 },
 437     { "VTOY_SECONDARY_BOOT_MENU", 1 },
 438     { NULL, 0 }
 439 };
 440
 441 static const char * ventoy_ctrl_var_read_hook(struct grub_env_var *var, const char *val)
 442 {
 443     int i;
 444
 445     for (i = 0; g_ctrl_vars[i].name; i++)
 446     {
 447         if (grub_strcmp(g_ctrl_vars[i].name, var->name) == 0)
 448         {
 449             return g_ctrl_vars[i].value ? "1" : "0";
 450         }
 451     }
 452
 453     return val;
 454 }
 455
 456 static char * ventoy_ctrl_var_write_hook(struct grub_env_var *var, const char *val)
 457 {
 458     int i;
 459
 460     for (i = 0; g_ctrl_vars[i].name; i++)
 461     {
 462         if (grub_strcmp(g_ctrl_vars[i].name, var->name) == 0)
 463         {
 464             if (val && val[0] == '1' && val[1] == 0)
 465             {
 466                 g_ctrl_vars[i].value = 1;
 467                 return grub_strdup("1");
 468             }
 469             else
 470             {
 471                 g_ctrl_vars[i].value = 0;
 472                 return grub_strdup("0");
 473             }
 474         }
 475     }
 476
 477     return grub_strdup(val);
 478 }
 479
 480 int ventoy_ctrl_var_init(void)
 481 {
 482     int i;
 483
 484     for (i = 0; g_ctrl_vars[i].name; i++)
 485     {
 486         ventoy_env_export(g_ctrl_vars[i].name, g_ctrl_vars[i].value ? "1" : "0");
 487         grub_register_variable_hook(g_ctrl_vars[i].name, ventoy_ctrl_var_read_hook, ventoy_ctrl_var_write_hook);
 488     }
 489
 490     return 0;
 491 }
 492
 493 GRUB_MOD_INIT(ventoy)
 494 {
 495     ventoy_hwinfo_init();
 496     ventoy_env_init();
 497     ventoy_arch_mode_init();
 498     ventoy_register_all_cmd();
 499 }
 500
 501 GRUB_MOD_FINI(ventoy)
 502 {
 503     ventoy_unregister_all_cmd();
 504 }
 505