| 1 | /*␊ |
| 2 | * Copyright 2010 Evan Lojewski. All rights reserved.␊ |
| 3 | *␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | /*␊ |
| 7 | * Copyright 2012 Cadet-petit Armel <armelcadetpetit@gmail.com>. All rights reserved.␊ |
| 8 | *␊ |
| 9 | * Cleaned, Added (runtime) bundles module support, based on a dylib environement.␊ |
| 10 | *␊ |
| 11 | */␊ |
| 12 | #include "libsaio.h"␊ |
| 13 | #include "bootstruct.h"␊ |
| 14 | #include "modules.h"␊ |
| 15 | ␊ |
| 16 | #ifndef DEBUG_MODULES␊ |
| 17 | #define DEBUG_MODULES 0␊ |
| 18 | #endif␊ |
| 19 | ␊ |
| 20 | #if DEBUG_MODULES␊ |
| 21 | #define DBG(x...)␉printf(x)␊ |
| 22 | #else␊ |
| 23 | #define DBG(x...)␊ |
| 24 | #endif␊ |
| 25 | ␊ |
| 26 | // NOTE: Global so that modules can link with this␊ |
| 27 | unsigned long long textAddress = 0;␊ |
| 28 | unsigned long long textSection = 0;␊ |
| 29 | ␊ |
| 30 | moduleHook_t* moduleCallbacks = NULL;␊ |
| 31 | symbolList_t* moduleSymbols = NULL;␊ |
| 32 | unsigned int (*lookup_symbol)(const char*, int(*strcmp_callback)(const char*, const char*)) = NULL;␊ |
| 33 | moduleHook_t* get_callback(const char* name);␊ |
| 34 | static unsigned int load_module(char * name, char* module);␊ |
| 35 | ␊ |
| 36 | #if DEBUG_MODULES␊ |
| 37 | VOID print_hook_list()␊ |
| 38 | {␊ |
| 39 | ␉moduleHook_t* hooks = moduleCallbacks;␊ |
| 40 | ␉printf("Hook list: \n");␊ |
| 41 | ␉while(hooks)␊ |
| 42 | ␉{␊ |
| 43 | ␉␉printf("* %s\n", hooks->name);␊ |
| 44 | ␉␉hooks = hooks->next;␊ |
| 45 | ␉}␊ |
| 46 | ␉printf("\n");␊ |
| 47 | }␊ |
| 48 | ␊ |
| 49 | VOID print_symbol_list()␊ |
| 50 | {␊ |
| 51 | ␉symbolList_t* symbol = moduleSymbols;␊ |
| 52 | ␉printf("Symbol list: \n");␊ |
| 53 | ␉while(symbol)␊ |
| 54 | ␉{␊ |
| 55 | ␉␉printf("* %s : %s\n", symbol->module, symbol->symbol);␊ |
| 56 | ␉␉symbol = symbol->next;␊ |
| 57 | ␉}␊ |
| 58 | ␉printf("\n");␊ |
| 59 | }␊ |
| 60 | #endif␊ |
| 61 | ␊ |
| 62 | #if DYLIB_SUPPORT␊ |
| 63 | ␊ |
| 64 | typedef struct dylbList_t␊ |
| 65 | {␊ |
| 66 | ␉char* dylib_name;␊ |
| 67 | ␉struct dylbList_t* next;␊ |
| 68 | } dylbList_t;␊ |
| 69 | ␊ |
| 70 | dylbList_t* loadedDylib = NULL;␊ |
| 71 | ␊ |
| 72 | ␊ |
| 73 | static EFI_STATUS is_system_loaded(void)␊ |
| 74 | {␊ |
| 75 | ␉msglog("* Attempting to load system module\n");␊ |
| 76 | ␊ |
| 77 | ␊ |
| 78 | if((UInt32)lookup_symbol != 0xFFFFFFFF)␊ |
| 79 | {␊ |
| 80 | #if␉DEBUG_MODULES == 2␊ |
| 81 | printf("System successfully Loaded.\n");␊ |
| 82 | getc(); ␊ |
| 83 | #endif␊ |
| 84 | return EFI_SUCCESS;␊ |
| 85 | }␊ |
| 86 | ␊ |
| 87 | ␊ |
| 88 | #if␉DEBUG_MODULES == 2␊ |
| 89 | printf("Failed to load system module\n");␊ |
| 90 | getc(); ␊ |
| 91 | #endif␊ |
| 92 | ␉return EFI_LOAD_ERROR;␊ |
| 93 | }␊ |
| 94 | ␊ |
| 95 | /*␊ |
| 96 | * print out the information about the loaded module␊ |
| 97 | */␊ |
| 98 | static VOID add_dylib(const char* name)␊ |
| 99 | {␊ |
| 100 | ␉dylbList_t* new_entry = malloc(sizeof(dylbList_t));␊ |
| 101 | ␉if (new_entry)␊ |
| 102 | ␉{␉␊ |
| 103 | ␉␉new_entry->next = loadedDylib;␊ |
| 104 | ␉␉␊ |
| 105 | ␉␉loadedDylib = new_entry;␊ |
| 106 | ␉␉␊ |
| 107 | ␉␉new_entry->dylib_name = (char*)name;␉␉␊ |
| 108 | ␉}␊ |
| 109 | }␊ |
| 110 | ␊ |
| 111 | static EFI_STATUS is_dylib_loaded(const char* name)␊ |
| 112 | {␊ |
| 113 | ␉dylbList_t* entry = loadedDylib;␊ |
| 114 | ␉while(entry)␊ |
| 115 | ␉{␊ |
| 116 | ␉␉DBG("Comparing %s with %s\n", name, entry->dylib_name);␊ |
| 117 | ␉␉char *fullname = newStringWithFormat("%s.dylib",name);␊ |
| 118 | ␉␉if(fullname && ((strcmp(entry->dylib_name, name) == 0) || (strcmp(entry->dylib_name, fullname) == 0)))␊ |
| 119 | ␉␉{␊ |
| 120 | ␉␉␉free(fullname);␊ |
| 121 | ␉␉␉DBG("Located module %s\n", name);␊ |
| 122 | ␉␉␉return EFI_SUCCESS;␊ |
| 123 | ␉␉}␊ |
| 124 | ␉␉else␊ |
| 125 | ␉␉{␊ |
| 126 | ␉␉␉entry = entry->next;␊ |
| 127 | ␉␉}␊ |
| 128 | ␉␉␊ |
| 129 | ␉}␊ |
| 130 | ␉DBG("Module %s not found\n", name);␊ |
| 131 | ␉␊ |
| 132 | ␉return EFI_NOT_FOUND;␊ |
| 133 | }␊ |
| 134 | ␊ |
| 135 | /*␊ |
| 136 | * Load a dylib ␊ |
| 137 | *␊ |
| 138 | * ex: load_dylib("/Extra/modules/", "AcpiCodec.dylib");␊ |
| 139 | */␊ |
| 140 | VOID load_dylib(const char * dylib_path, const char * name)␊ |
| 141 | {␊ |
| 142 | void (*module_start)(void);␊ |
| 143 | ␊ |
| 144 | char *tmp = newStringWithFormat("%s%s",dylib_path, name);␉␉␉␉␉␉␉␉␊ |
| 145 | if (!tmp) {␊ |
| 146 | return;␊ |
| 147 | }␊ |
| 148 | char *dylib_name = newString(name);␉␉␉␉␉␉␉␉␊ |
| 149 | if (!dylib_name) {␊ |
| 150 | free(tmp);␊ |
| 151 | return;␊ |
| 152 | }␊ |
| 153 | msglog("* Attempting to load module: %s\n", tmp);␊ |
| 154 | module_start = (void*)load_module(dylib_name,tmp);␊ |
| 155 | ␊ |
| 156 | if(module_start && ( module_start != (void*)0xFFFFFFFF))␊ |
| 157 | {␊ |
| 158 | add_dylib(name);␊ |
| 159 | module_start();␊ |
| 160 | }␊ |
| 161 | else␊ |
| 162 | {␊ |
| 163 | // failed to load or already loaded␊ |
| 164 | free(tmp);␊ |
| 165 | free(dylib_name);␊ |
| 166 | ␊ |
| 167 | }␊ |
| 168 | }␊ |
| 169 | ␊ |
| 170 | /*␊ |
| 171 | * Load all dylib in the /Extra/modules/ directory␊ |
| 172 | */␊ |
| 173 | ␊ |
| 174 | VOID load_all_dylib(void)␊ |
| 175 | {␊ |
| 176 | ␉char* name;␊ |
| 177 | ␉long flags;␊ |
| 178 | ␉long time;␊ |
| 179 | ␊ |
| 180 | if (is_system_loaded() != EFI_SUCCESS) return;␊ |
| 181 | ␊ |
| 182 | long ret, length, flags, time, bundleType;␊ |
| 183 | long long␉ index;␊ |
| 184 | long result = -1;␊ |
| 185 | const char * name;␊ |
| 186 | void (*module_start)(void);␊ |
| 187 | ␉␊ |
| 188 | ␉DBG("FileLoadBundles in %s\n",dirSpec);␊ |
| 189 | ␊ |
| 190 | index = 0;␊ |
| 191 | while (1) {␊ |
| 192 | ret = GetDirEntry("/Extra/modules/", &index, &name, &flags, &time);␊ |
| 193 | if (ret == -1) break; ␊ |
| 194 | ␉␉␊ |
| 195 | // Make sure this is not a directory.␊ |
| 196 | if ((flags & kFileTypeMask) == kFileTypeDirectory) continue;␊ |
| 197 | ␊ |
| 198 | if ((strcmp("Symbols.dylib",name)) == 0) continue; // if we found Symbols.dylib, just skip it␊ |
| 199 | ␊ |
| 200 | if (is_dylib_loaded(name) == EFI_SUCCESS) continue;␊ |
| 201 | ␊ |
| 202 | ␊ |
| 203 | // Make sure this is a kext.␊ |
| 204 | length = strlen(name);␊ |
| 205 | if (strcmp(name + length - 6, ".dylib")) continue;␊ |
| 206 | ␉␉␊ |
| 207 | char *tmp = newStringWithFormat( "/Extra/modules/%s",name);␉␉␉␉␉␉␉␉␊ |
| 208 | if (!tmp) {␊ |
| 209 | continue;␊ |
| 210 | }␊ |
| 211 | char *dylib_name = newString(name);␉␉␉␉␉␉␉␉␊ |
| 212 | if (!dylib_name) {␊ |
| 213 | free(tmp);␊ |
| 214 | continue;␊ |
| 215 | }␊ |
| 216 | msglog("* Attempting to load module: %s\n", tmp);␊ |
| 217 | module_start = (void*)load_module(dylib_name,tmp);␊ |
| 218 | ␊ |
| 219 | if(module_start && ( module_start != (void*)0xFFFFFFFF))␊ |
| 220 | {␊ |
| 221 | add_dylib(name);␊ |
| 222 | module_start();␊ |
| 223 | }␊ |
| 224 | else␊ |
| 225 | {␊ |
| 226 | // failed to load or already loaded␊ |
| 227 | free(tmp);␊ |
| 228 | free(dylib_name);␊ |
| 229 | ␊ |
| 230 | }␊ |
| 231 | }␉␊ |
| 232 | ␉␊ |
| 233 | #if DEBUG_MODULES␊ |
| 234 | ␉print_symbol_list();␊ |
| 235 | #endif␊ |
| 236 | }␊ |
| 237 | ␊ |
| 238 | #endif␊ |
| 239 | ␊ |
| 240 | /*␊ |
| 241 | * Load a module file ␊ |
| 242 | */␊ |
| 243 | static unsigned int load_module(char * name, char* module)␊ |
| 244 | {␊ |
| 245 | ␉unsigned int module_start = 0xFFFFFFFF;␊ |
| 246 | ␊ |
| 247 | ␉␊ |
| 248 | ␉int fh = -1;␊ |
| 249 | ␉␊ |
| 250 | ␉fh = open(module);␊ |
| 251 | ␉if(fh < 0)␊ |
| 252 | ␉{␉␉␊ |
| 253 | #if DEBUG_MODULES␊ |
| 254 | ␉␉DBG("Unable to locate module %s\n", module);␊ |
| 255 | ␉␉getc();␊ |
| 256 | #else␊ |
| 257 | ␉␉msglog("Unable to locate module %s\n", module);␊ |
| 258 | #endif␊ |
| 259 | ␉␉return 0xFFFFFFFF;␉␉␊ |
| 260 | ␉}␊ |
| 261 | ␉␊ |
| 262 | ␉{␊ |
| 263 | ␉␉int moduleSize = file_size(fh);␊ |
| 264 | ␉␉␊ |
| 265 | ␉␉char* module_base = NULL;␊ |
| 266 | ␉␉␊ |
| 267 | ␉␉if (moduleSize > 0)␊ |
| 268 | ␉␉{␊ |
| 269 | ␉␉␉module_base = (char*) malloc(moduleSize);␊ |
| 270 | ␉␉}␉␉␊ |
| 271 | ␉␉␊ |
| 272 | ␉␉if (module_base && read(fh, module_base, moduleSize) == moduleSize)␊ |
| 273 | ␉␉{␊ |
| 274 | ␉␉␉␊ |
| 275 | ␉␉␉DBG("Module %s read in.\n", module);␊ |
| 276 | ␉␉␉␊ |
| 277 | ␉␉␉// Module loaded into memory, parse it␊ |
| 278 | ␉␉␉module_start = parse_mach(name, module_base, &add_symbol);␉␉␉␊ |
| 279 | ␊ |
| 280 | ␉␉}␊ |
| 281 | ␉␉else␊ |
| 282 | ␉␉{␊ |
| 283 | ␉␉␉printf("Unable to read in module %s\n.", module);␊ |
| 284 | #if DEBUG_MODULES␉␉␊ |
| 285 | ␉␉␉getc();␊ |
| 286 | #endif␊ |
| 287 | ␉␉␉module_start = 0xFFFFFFFF;␊ |
| 288 | ␉␉}␊ |
| 289 | ␉}␊ |
| 290 | ␉close(fh);␊ |
| 291 | ␉return module_start;␊ |
| 292 | }␊ |
| 293 | ␊ |
| 294 | moduleHook_t* get_callback(const char* name)␊ |
| 295 | {␊ |
| 296 | ␉moduleHook_t* hooks = moduleCallbacks;␊ |
| 297 | ␉␊ |
| 298 | ␉// look for a hook. If it exists, return the moduleHook_t*,␊ |
| 299 | ␉// If not, return NULL.␊ |
| 300 | ␉while(hooks)␊ |
| 301 | ␉{␊ |
| 302 | ␉␉if(strcmp(name, hooks->name) == 0)␊ |
| 303 | ␉␉{␊ |
| 304 | ␉␉␉//DBG("Located hook %s\n", name);␊ |
| 305 | ␉␉␉return hooks;␊ |
| 306 | ␉␉}␊ |
| 307 | ␉␉hooks = hooks->next;␊ |
| 308 | ␉}␊ |
| 309 | ␉return NULL;␊ |
| 310 | ␉␊ |
| 311 | }␊ |
| 312 | ␊ |
| 313 | /*␊ |
| 314 | *␉execute_hook( const char* name )␊ |
| 315 | *␉␉name - Name of the module hook␊ |
| 316 | *␉␉␉If any callbacks have been registered for this hook␊ |
| 317 | *␉␉␉they will be executed now in the same order that the␊ |
| 318 | *␉␉␉hooks were added.␊ |
| 319 | */␊ |
| 320 | EFI_STATUS execute_hook(const char* name, void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊ |
| 321 | {␊ |
| 322 | ␉DBG("Attempting to execute hook '%s'\n", name);␊ |
| 323 | ␉moduleHook_t* hook = get_callback(name);␊ |
| 324 | ␉␊ |
| 325 | ␉if(hook)␊ |
| 326 | ␉{␊ |
| 327 | ␉␉// Loop through all callbacks for this module␊ |
| 328 | ␉␉callbackList_t* callbacks = hook->callbacks;␊ |
| 329 | ␉␉␊ |
| 330 | ␉␉while(callbacks)␊ |
| 331 | ␉␉{␊ |
| 332 | ␉␉␉// Execute callback␊ |
| 333 | ␉␉␉callbacks->callback(arg1, arg2, arg3, arg4, arg5, arg6);␊ |
| 334 | ␉␉␉callbacks = callbacks->next;␊ |
| 335 | ␉␉}␊ |
| 336 | ␉␉DBG("Hook '%s' executed.\n", name); ␊ |
| 337 | ␉␉return EFI_SUCCESS;␊ |
| 338 | ␉}␊ |
| 339 | ␉␊ |
| 340 | ␉// Callback for this hook doesn't exist;␊ |
| 341 | ␉DBG("No callbacks for '%s' hook.\n", name);␊ |
| 342 | ␉return EFI_NOT_FOUND;␊ |
| 343 | ␉␊ |
| 344 | }␊ |
| 345 | ␊ |
| 346 | /*␊ |
| 347 | *␉register_hook_callback( const char* name, void(*callback)())␊ |
| 348 | *␉␉name - Name of the module hook to attach to.␊ |
| 349 | *␉␉callbacks - The funciton pointer that will be called when the␊ |
| 350 | *␉␉␉hook is executed. When registering a new callback name, the callback is added sorted.␊ |
| 351 | *␉␉␉NOTE: the hooks take four void* arguments.␊ |
| 352 | */␊ |
| 353 | VOID register_hook_callback(const char* name, void(*callback)(void*, void*, void*, void*, void*, void*))␊ |
| 354 | {␉␊ |
| 355 | ␉DBG("Adding callback for hook '%s'.\n", name);␊ |
| 356 | ␉␊ |
| 357 | ␉moduleHook_t* hook = get_callback(name);␊ |
| 358 | ␉␊ |
| 359 | ␉if(hook)␊ |
| 360 | ␉{␊ |
| 361 | ␉␉// append␊ |
| 362 | ␉␉callbackList_t* newCallback = malloc(sizeof(callbackList_t));␊ |
| 363 | ␉␉if (!newCallback) {␊ |
| 364 | ␉␉␉DBG("Unable to allocate memory for callback \n");␊ |
| 365 | ␉␉␉return;␊ |
| 366 | ␉␉}␊ |
| 367 | ␉␉newCallback->next = hook->callbacks;␊ |
| 368 | ␉␉hook->callbacks = newCallback;␊ |
| 369 | ␉␉newCallback->callback = callback;␊ |
| 370 | ␉}␊ |
| 371 | ␉else␊ |
| 372 | ␉{␊ |
| 373 | ␉␉// create new hook␊ |
| 374 | ␉␉moduleHook_t* newHook = malloc(sizeof(moduleHook_t));␊ |
| 375 | ␉␉if (!newHook) {␊ |
| 376 | ␉␉␉DBG("Unable to allocate memory for hook '%s'.\n", name);␊ |
| 377 | ␉␉␉return;␊ |
| 378 | ␉␉}␊ |
| 379 | ␉␉newHook->name = name;␊ |
| 380 | ␉␉newHook->callbacks = malloc(sizeof(callbackList_t));␊ |
| 381 | ␉␉if (!newHook->callbacks) {␊ |
| 382 | ␉␉␉DBG("Unable to allocate memory for callback \n");␊ |
| 383 | ␉␉␉free(newHook);␊ |
| 384 | ␉␉␉return;␊ |
| 385 | ␉␉}␊ |
| 386 | ␉␉newHook->callbacks->callback = callback;␊ |
| 387 | ␉␉newHook->callbacks->next = NULL;␊ |
| 388 | ␉␉␊ |
| 389 | ␉␉newHook->next = moduleCallbacks;␊ |
| 390 | ␉␉moduleCallbacks = newHook;␊ |
| 391 | ␉␉␊ |
| 392 | ␉}␊ |
| 393 | ␉␊ |
| 394 | #if DEBUG_MODULES␊ |
| 395 | ␉print_hook_list();␊ |
| 396 | ␉getc();␊ |
| 397 | #endif␊ |
| 398 | ␉␊ |
| 399 | }␊ |
| 400 | ␊ |
| 401 | #if DEBUG_MODULES␊ |
| 402 | unsigned long vmaddr;␊ |
| 403 | long vmsize;␊ |
| 404 | #endif␊ |
| 405 | ␊ |
| 406 | /*␊ |
| 407 | * Parse through a macho module. The module will be rebased and binded␊ |
| 408 | * as specified in the macho header. If the module is successfully loaded␊ |
| 409 | * the module iinit address will be returned.␊ |
| 410 | * NOTE; all dependecies will be loaded before this module is started␊ |
| 411 | * NOTE: If the module is unable to load ot completeion, the modules␊ |
| 412 | * symbols will still be available (TODO: fix this). This should not␊ |
| 413 | * happen as all dependencies are verified before the sybols are read in.␊ |
| 414 | */␊ |
| 415 | unsigned int parse_mach(char *module, void* binary, long long(*symbol_handler)(char*, char*, long long, char))␉// TODO: add param to specify valid archs␊ |
| 416 | {␉␊ |
| 417 | ␉char is64 = false;␊ |
| 418 | ␉unsigned int module_start = 0xFFFFFFFF;␊ |
| 419 | ␉EFI_STATUS bind_status = EFI_SUCCESS;␊ |
| 420 | ␊ |
| 421 | ␉// TODO convert all of the structs to a union␉␊ |
| 422 | ␉struct dyld_info_command* dyldInfoCommand = NULL;␉␊ |
| 423 | ␉struct symtab_command* symtabCommand = NULL;␉␊ |
| 424 | ␉␊ |
| 425 | ␉{␊ |
| 426 | ␉␉struct segment_command *segCommand = NULL;␊ |
| 427 | ␉␉struct segment_command_64 *segCommand64 = NULL;␊ |
| 428 | ␉␉struct load_command *loadCommand = NULL;␊ |
| 429 | ␉␉UInt32 binaryIndex = 0;␊ |
| 430 | ␉␉UInt16 cmd = 0;␊ |
| 431 | ␉␉␊ |
| 432 | ␉␉// Parse through the load commands␊ |
| 433 | ␉␉if(((struct mach_header*)binary)->magic == MH_MAGIC)␊ |
| 434 | ␉␉{␊ |
| 435 | ␉␉␉is64 = false;␊ |
| 436 | ␉␉␉binaryIndex += sizeof(struct mach_header);␊ |
| 437 | ␉␉}␊ |
| 438 | ␉␉else if(((struct mach_header_64*)binary)->magic == MH_MAGIC_64)␊ |
| 439 | ␉␉{␊ |
| 440 | ␉␉␉// NOTE: modules cannot be 64bit...␊ |
| 441 | ␉␉␉is64 = true;␊ |
| 442 | ␉␉␉binaryIndex += sizeof(struct mach_header_64);␊ |
| 443 | ␉␉}␊ |
| 444 | ␉␉else␊ |
| 445 | ␉␉{␊ |
| 446 | ␉␉␉printf("Modules: Invalid mach magic\n");␊ |
| 447 | ␉␉␉getc();␊ |
| 448 | ␉␉␉return 0xFFFFFFFF;␊ |
| 449 | ␉␉}␊ |
| 450 | ␉␉␊ |
| 451 | ␉␉␊ |
| 452 | ␉␉␊ |
| 453 | ␉␉/*if(((struct mach_header*)binary)->filetype != MH_DYLIB)␊ |
| 454 | ␉␉ {␊ |
| 455 | ␉␉ printf("Module is not a dylib. Unable to load.\n");␊ |
| 456 | ␉␉ getc();␊ |
| 457 | ␉␉ return NULL; // Module is in the incorrect format␊ |
| 458 | ␉␉ }*/␊ |
| 459 | ␉␉␊ |
| 460 | ␉␉while(cmd < ((struct mach_header*)binary)->ncmds)␊ |
| 461 | ␉␉{␊ |
| 462 | ␉␉␉cmd++;␊ |
| 463 | ␉␉␉␊ |
| 464 | ␉␉␉loadCommand = binary + binaryIndex;␊ |
| 465 | ␉␉␉UInt32 cmdSize = loadCommand->cmdsize;␊ |
| 466 | ␉␉␉␊ |
| 467 | ␉␉␉␊ |
| 468 | ␉␉␉switch ((loadCommand->cmd & 0x7FFFFFFF))␊ |
| 469 | ␉␉␉{␊ |
| 470 | ␉␉␉␉case LC_SYMTAB:␊ |
| 471 | ␉␉␉␉␉symtabCommand = binary + binaryIndex;␊ |
| 472 | ␉␉␉␉␉break;␊ |
| 473 | ␉␉␉␉␉␊ |
| 474 | ␉␉␉␉case LC_SEGMENT: // 32bit macho␊ |
| 475 | ␉␉␉␉{␊ |
| 476 | ␉␉␉␉␉segCommand = binary + binaryIndex;␊ |
| 477 | ␉␉␉␉␉␊ |
| 478 | ␉␉␉␉␉//printf("Segment name is %s\n", segCommand->segname);␊ |
| 479 | ␉␉␉␉␉␊ |
| 480 | ␉␉␉␉␉if(strcmp("__TEXT", segCommand->segname) == 0)␊ |
| 481 | ␉␉␉␉␉{␊ |
| 482 | ␉␉␉␉␉␉UInt32 sectionIndex;␊ |
| 483 | ␉␉␉␉␉␉␊ |
| 484 | #if DEBUG_MODULES␊ |
| 485 | ␉␉␉␉␉␉unsigned long fileaddr;␊ |
| 486 | ␉␉␉␉␉␉long filesize;␉␉␉␉␉␊ |
| 487 | ␉␉␉␉␉␉vmaddr = (segCommand->vmaddr & 0x3fffffff);␊ |
| 488 | ␉␉␉␉␉␉vmsize = segCommand->vmsize;␉ ␊ |
| 489 | ␉␉␉␉␉␉fileaddr = ((unsigned long)(binary + binaryIndex) + segCommand->fileoff);␊ |
| 490 | ␉␉␉␉␉␉filesize = segCommand->filesize;␊ |
| 491 | ␉␉␉␉␉␉␊ |
| 492 | ␉␉␉␉␉␉printf("segname: %s, vmaddr: %x, vmsize: %x, fileoff: %x, filesize: %x, nsects: %d, flags: %x.\n",␊ |
| 493 | ␉␉␉␉␉␉␉ segCommand->segname, (unsigned)vmaddr, (unsigned)vmsize, (unsigned)fileaddr, (unsigned)filesize,␊ |
| 494 | ␉␉␉␉␉␉␉ (unsigned) segCommand->nsects, (unsigned)segCommand->flags);␊ |
| 495 | #if DEBUG_MODULES==2␊ |
| 496 | ␉␉␉␉␉␉␊ |
| 497 | ␉␉␉␉␉␉getc();␊ |
| 498 | #endif␊ |
| 499 | #endif␊ |
| 500 | ␉␉␉␉␉␉␊ |
| 501 | ␉␉␉␉␉␉sectionIndex = sizeof(struct segment_command);␊ |
| 502 | ␉␉␉␉␉␉␊ |
| 503 | ␉␉␉␉␉␉struct section *sect;␊ |
| 504 | ␉␉␉␉␉␉␊ |
| 505 | ␉␉␉␉␉␉while(sectionIndex < segCommand->cmdsize)␊ |
| 506 | ␉␉␉␉␉␉{␊ |
| 507 | ␉␉␉␉␉␉␉sect = binary + binaryIndex + sectionIndex;␊ |
| 508 | ␉␉␉␉␉␉␉␊ |
| 509 | ␉␉␉␉␉␉␉sectionIndex += sizeof(struct section);␊ |
| 510 | ␉␉␉␉␉␉␉␊ |
| 511 | ␉␉␉␉␉␉␉␊ |
| 512 | ␉␉␉␉␉␉␉if(strcmp("__text", sect->sectname) == 0)␊ |
| 513 | ␉␉␉␉␉␉␉{␊ |
| 514 | ␉␉␉␉␉␉␉␉// __TEXT,__text found, save the offset and address for when looking for the calls.␊ |
| 515 | ␉␉␉␉␉␉␉␉textSection = sect->offset;␊ |
| 516 | ␉␉␉␉␉␉␉␉textAddress = sect->addr;␊ |
| 517 | ␉␉␉␉␉␉␉␉break;␊ |
| 518 | ␉␉␉␉␉␉␉}␉␉␉␉␉␊ |
| 519 | ␉␉␉␉␉␉}␊ |
| 520 | ␉␉␉␉␉}␊ |
| 521 | ␉␉␉␉␉break;␊ |
| 522 | ␉␉␉␉}␉␉␉␉␊ |
| 523 | ␉␉␉␉case LC_SEGMENT_64:␉// 64bit macho's␊ |
| 524 | ␉␉␉␉{␊ |
| 525 | ␉␉␉␉␉segCommand64 = binary + binaryIndex;␊ |
| 526 | ␉␉␉␉␉␊ |
| 527 | ␉␉␉␉␉//printf("Segment name is %s\n", segCommand->segname);␊ |
| 528 | ␉␉␉␉␉␊ |
| 529 | ␉␉␉␉␉if(strcmp("__TEXT", segCommand64->segname) == 0)␊ |
| 530 | ␉␉␉␉␉{␊ |
| 531 | ␉␉␉␉␉␉UInt32 sectionIndex;␊ |
| 532 | ␉␉␉␉␉␉␊ |
| 533 | #if DEBUG_MODULES␉␉␉␉␉␉␊ |
| 534 | ␉␉␉␉␉␉unsigned long fileaddr;␊ |
| 535 | ␉␉␉␉␉␉long filesize;␉␉␉␉␉␊ |
| 536 | ␉␉␉␉␉␉vmaddr = (segCommand64->vmaddr & 0x3fffffff);␊ |
| 537 | ␉␉␉␉␉␉vmsize = segCommand64->vmsize;␉ ␊ |
| 538 | ␉␉␉␉␉␉fileaddr = ((unsigned long)(binary + binaryIndex) + segCommand64->fileoff);␊ |
| 539 | ␉␉␉␉␉␉filesize = segCommand64->filesize;␊ |
| 540 | ␉␉␉␉␉␉␊ |
| 541 | ␉␉␉␉␉␉printf("segname: %s, vmaddr: %x, vmsize: %x, fileoff: %x, filesize: %x, nsects: %d, flags: %x.\n",␊ |
| 542 | ␉␉␉␉␉␉␉ segCommand64->segname, (unsigned)vmaddr, (unsigned)vmsize, (unsigned)fileaddr, (unsigned)filesize,␊ |
| 543 | ␉␉␉␉␉␉␉ (unsigned) segCommand64->nsects, (unsigned)segCommand64->flags);␊ |
| 544 | #if DEBUG_MODULES==2␊ |
| 545 | ␉␉␉␉␉␉␊ |
| 546 | ␉␉␉␉␉␉getc();␊ |
| 547 | #endif␊ |
| 548 | #endif␊ |
| 549 | ␉␉␉␉␉␉␊ |
| 550 | ␉␉␉␉␉␉sectionIndex = sizeof(struct segment_command_64);␊ |
| 551 | ␉␉␉␉␉␉␊ |
| 552 | ␉␉␉␉␉␉struct section_64 *sect;␊ |
| 553 | ␉␉␉␉␉␉␊ |
| 554 | ␉␉␉␉␉␉while(sectionIndex < segCommand64->cmdsize)␊ |
| 555 | ␉␉␉␉␉␉{␊ |
| 556 | ␉␉␉␉␉␉␉sect = binary + binaryIndex + sectionIndex;␊ |
| 557 | ␉␉␉␉␉␉␉␊ |
| 558 | ␉␉␉␉␉␉␉sectionIndex += sizeof(struct section_64);␊ |
| 559 | ␉␉␉␉␉␉␉␊ |
| 560 | ␉␉␉␉␉␉␉␊ |
| 561 | ␉␉␉␉␉␉␉if(strcmp("__text", sect->sectname) == 0)␊ |
| 562 | ␉␉␉␉␉␉␉{␊ |
| 563 | ␉␉␉␉␉␉␉␉// __TEXT,__text found, save the offset and address for when looking for the calls.␊ |
| 564 | ␉␉␉␉␉␉␉␉textSection = sect->offset;␊ |
| 565 | ␉␉␉␉␉␉␉␉textAddress = sect->addr;␊ |
| 566 | ␉␉␉␉␉␉␉␉␊ |
| 567 | ␉␉␉␉␉␉␉␉break;␊ |
| 568 | ␉␉␉␉␉␉␉}␉␉␉␉␉␊ |
| 569 | ␉␉␉␉␉␉}␊ |
| 570 | ␉␉␉␉␉}␊ |
| 571 | ␉␉␉␉␉␊ |
| 572 | ␉␉␉␉␉break;␊ |
| 573 | ␉␉␉␉}␉␉␉␉␊ |
| 574 | ␉␉␉␉case LC_DYSYMTAB:␊ |
| 575 | ␉␉␉␉␉break;␊ |
| 576 | ␉␉␉␉␉␊ |
| 577 | ␉␉␉␉case LC_LOAD_DYLIB:␊ |
| 578 | ␉␉␉␉case LC_LOAD_WEAK_DYLIB ^ LC_REQ_DYLD:␊ |
| 579 | break;␊ |
| 580 | ␊ |
| 581 | ␉␉␉␉case LC_ID_DYLIB:␊ |
| 582 | break;␊ |
| 583 | ␊ |
| 584 | ␉␉␉␉␉␊ |
| 585 | ␉␉␉␉case LC_DYLD_INFO:␊ |
| 586 | ␉␉␉␉␉// Bind and rebase info is stored here␊ |
| 587 | ␉␉␉␉␉dyldInfoCommand = binary + binaryIndex;␊ |
| 588 | ␉␉␉␉␉break;␊ |
| 589 | ␉␉␉␉␉␊ |
| 590 | ␉␉␉␉case LC_UUID:␊ |
| 591 | ␉␉␉␉␉break;␊ |
| 592 | ␉␉␉␉␉␊ |
| 593 | ␉␉␉␉case LC_UNIXTHREAD:␊ |
| 594 | ␉␉␉␉␉break;␊ |
| 595 | ␉␉␉␉␉␊ |
| 596 | ␉␉␉␉default:␊ |
| 597 | ␉␉␉␉␉DBG("Unhandled loadcommand 0x%X\n", loadCommand->cmd & 0x7FFFFFFF);␊ |
| 598 | ␉␉␉␉␉break;␊ |
| 599 | ␉␉␉␉␉␊ |
| 600 | ␉␉␉}␊ |
| 601 | ␉␉␉␊ |
| 602 | ␉␉␉binaryIndex += cmdSize;␊ |
| 603 | ␉␉}␊ |
| 604 | ␉␉//if(!moduleName) return NULL;␊ |
| 605 | ␉}␉␉␊ |
| 606 | ␉␊ |
| 607 | ␉// bind_macho uses the symbols.␊ |
| 608 | ␉module_start = handle_symtable(module, (UInt32)binary, symtabCommand, symbol_handler, is64);␊ |
| 609 | ␊ |
| 610 | ␉// Rebase the module before binding it.␊ |
| 611 | ␉if(dyldInfoCommand && dyldInfoCommand->rebase_off)␊ |
| 612 | ␉{␊ |
| 613 | ␉␉rebase_macho(binary, (char*)dyldInfoCommand->rebase_off, dyldInfoCommand->rebase_size);␊ |
| 614 | ␉}␊ |
| 615 | ␉␊ |
| 616 | ␉if(dyldInfoCommand && dyldInfoCommand->bind_off)␊ |
| 617 | ␉{␊ |
| 618 | ␉␉bind_status = bind_macho(module, binary, (char*)dyldInfoCommand->bind_off, dyldInfoCommand->bind_size);␊ |
| 619 | ␉}␊ |
| 620 | ␉␊ |
| 621 | ␉if(dyldInfoCommand && dyldInfoCommand->weak_bind_off && (bind_status == EFI_SUCCESS))␊ |
| 622 | ␉{␊ |
| 623 | ␉␉// NOTE: this currently should never happen.␊ |
| 624 | ␉␉bind_status = bind_macho(module, binary, (char*)dyldInfoCommand->weak_bind_off, dyldInfoCommand->weak_bind_size);␊ |
| 625 | ␉}␊ |
| 626 | ␉␊ |
| 627 | ␉if(dyldInfoCommand && dyldInfoCommand->lazy_bind_off && (bind_status == EFI_SUCCESS))␊ |
| 628 | ␉{␊ |
| 629 | ␉␉// NOTE: we are binding the lazy pointers as a module is laoded,␊ |
| 630 | ␉␉// This should be changed to bind when a symbol is referened at runtime instead.␊ |
| 631 | ␉␉bind_status = bind_macho(module, binary, (char*)dyldInfoCommand->lazy_bind_off, dyldInfoCommand->lazy_bind_size);␊ |
| 632 | ␉}␊ |
| 633 | ␉␊ |
| 634 | if (bind_status != EFI_SUCCESS) {␊ |
| 635 | module_start = 0xFFFFFFFF;␊ |
| 636 | }␊ |
| 637 | ␊ |
| 638 | ␉return module_start;␊ |
| 639 | ␉␊ |
| 640 | }␊ |
| 641 | ␊ |
| 642 | // Based on code from dylibinfo.cpp and ImageLoaderMachOCompressed.cpp␊ |
| 643 | void rebase_macho(void* base, char* rebase_stream, UInt32 size)␊ |
| 644 | {␊ |
| 645 | ␉rebase_stream += (UInt32)base;␊ |
| 646 | ␉␊ |
| 647 | ␉UInt8 immediate = 0;␊ |
| 648 | ␉UInt8 opcode = 0;␊ |
| 649 | ␉UInt8 type = 0;␊ |
| 650 | ␉␊ |
| 651 | ␉UInt32 segmentAddress = 0;␊ |
| 652 | ␉␊ |
| 653 | ␉␊ |
| 654 | ␉␊ |
| 655 | ␉UInt32 tmp = 0;␊ |
| 656 | ␉UInt32 tmp2 = 0;␊ |
| 657 | ␉UInt8 bits = 0;␊ |
| 658 | ␉UInt32 index = 0;␊ |
| 659 | ␉␊ |
| 660 | ␉//int done = 0;␊ |
| 661 | ␉unsigned int i = 0;␊ |
| 662 | ␉␊ |
| 663 | ␉while(/*!done &&*/ i < size)␊ |
| 664 | ␉{␊ |
| 665 | ␉␉immediate = rebase_stream[i] & REBASE_IMMEDIATE_MASK;␊ |
| 666 | ␉␉opcode = rebase_stream[i] & REBASE_OPCODE_MASK;␊ |
| 667 | ␉␉␊ |
| 668 | ␉␉␊ |
| 669 | ␉␉switch(opcode)␊ |
| 670 | ␉␉{␊ |
| 671 | ␉␉␉case REBASE_OPCODE_DONE:␊ |
| 672 | ␉␉␉␉// Rebase complete.␊ |
| 673 | ␉␉␉␉//done = 1;␊ |
| 674 | ␉␉␉␉break;␊ |
| 675 | ␉␉␉␉␊ |
| 676 | ␉␉␉␉␊ |
| 677 | ␉␉␉case REBASE_OPCODE_SET_TYPE_IMM:␊ |
| 678 | ␉␉␉␉// Set rebase type (pointer, absolute32, pcrel32)␊ |
| 679 | ␉␉␉␉//DBG("Rebase type = 0x%X\n", immediate);␊ |
| 680 | ␉␉␉␉type = immediate;␊ |
| 681 | ␉␉␉␉break;␊ |
| 682 | ␉␉␉␉␊ |
| 683 | ␉␉␉␉␊ |
| 684 | ␉␉␉case REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:␊ |
| 685 | ␉␉␉{␊ |
| 686 | ␉␉␉␉// Locate address to begin rebasing␊ |
| 687 | ␉␉␉␉//segmentAddress = 0;␊ |
| 688 | ␉␉␉␉␊ |
| 689 | ␉␉␉␉struct segment_command* segCommand = NULL; // NOTE: 32bit only␊ |
| 690 | ␉␉␉␉␊ |
| 691 | ␉␉␉␉{␊ |
| 692 | ␉␉␉␉␉unsigned int binIndex = 0;␊ |
| 693 | ␉␉␉␉␉index = 0;␊ |
| 694 | ␉␉␉␉␉do␊ |
| 695 | ␉␉␉␉␉{␊ |
| 696 | ␉␉␉␉␉␉segCommand = base + sizeof(struct mach_header) + binIndex;␊ |
| 697 | ␉␉␉␉␉␉␊ |
| 698 | ␉␉␉␉␉␉␊ |
| 699 | ␉␉␉␉␉␉binIndex += segCommand->cmdsize;␊ |
| 700 | ␉␉␉␉␉␉index++;␊ |
| 701 | ␉␉␉␉␉}␊ |
| 702 | ␉␉␉␉␉while(index <= immediate);␊ |
| 703 | ␉␉␉␉}␉␉␉␉␊ |
| 704 | ␉␉␉␉␊ |
| 705 | ␉␉␉␉segmentAddress = segCommand->fileoff;␊ |
| 706 | ␉␉␉␉␊ |
| 707 | ␉␉␉␉tmp = 0;␊ |
| 708 | ␉␉␉␉bits = 0;␊ |
| 709 | ␉␉␉␉do␊ |
| 710 | ␉␉␉␉{␊ |
| 711 | ␉␉␉␉␉tmp |= (rebase_stream[++i] & 0x7f) << bits;␊ |
| 712 | ␉␉␉␉␉bits += 7;␊ |
| 713 | ␉␉␉␉}␊ |
| 714 | ␉␉␉␉while(rebase_stream[i] & 0x80);␊ |
| 715 | ␉␉␉␉␊ |
| 716 | ␉␉␉␉segmentAddress += tmp;␊ |
| 717 | ␉␉␉␉break;␊ |
| 718 | ␉␉␉}␉␉␉␉␊ |
| 719 | ␉␉␉case REBASE_OPCODE_ADD_ADDR_ULEB:␊ |
| 720 | ␉␉␉␉// Add value to rebase address␊ |
| 721 | ␉␉␉␉tmp = 0;␊ |
| 722 | ␉␉␉␉bits = 0;␊ |
| 723 | ␉␉␉␉do␊ |
| 724 | ␉␉␉␉{␊ |
| 725 | ␉␉␉␉␉tmp <<= bits;␊ |
| 726 | ␉␉␉␉␉tmp |= rebase_stream[++i] & 0x7f;␊ |
| 727 | ␉␉␉␉␉bits += 7;␊ |
| 728 | ␉␉␉␉}␊ |
| 729 | ␉␉␉␉while(rebase_stream[i] & 0x80);␊ |
| 730 | ␉␉␉␉␊ |
| 731 | ␉␉␉␉segmentAddress +=␉tmp; ␊ |
| 732 | ␉␉␉␉break;␊ |
| 733 | ␉␉␉␉␊ |
| 734 | ␉␉␉case REBASE_OPCODE_ADD_ADDR_IMM_SCALED:␊ |
| 735 | ␉␉␉␉segmentAddress += immediate * sizeof(void*);␊ |
| 736 | ␉␉␉␉break;␊ |
| 737 | ␉␉␉␉␊ |
| 738 | ␉␉␉␉␊ |
| 739 | ␉␉␉case REBASE_OPCODE_DO_REBASE_IMM_TIMES:␊ |
| 740 | ␉␉␉␉for (index = 0; index < immediate; ++index)␊ |
| 741 | ␉␉␉␉{␊ |
| 742 | ␉␉␉␉␉rebase_location(base + segmentAddress, (char*)base, type);␊ |
| 743 | ␉␉␉␉␉segmentAddress += sizeof(void*);␊ |
| 744 | ␉␉␉␉}␊ |
| 745 | ␉␉␉␉break;␉␉␉␉␊ |
| 746 | ␉␉␉␉␊ |
| 747 | ␉␉␉case REBASE_OPCODE_DO_REBASE_ULEB_TIMES:␊ |
| 748 | ␉␉␉␉tmp = 0;␊ |
| 749 | ␉␉␉␉bits = 0;␊ |
| 750 | ␉␉␉␉do␊ |
| 751 | ␉␉␉␉{␊ |
| 752 | ␉␉␉␉␉tmp |= (rebase_stream[++i] & 0x7f) << bits;␊ |
| 753 | ␉␉␉␉␉bits += 7;␊ |
| 754 | ␉␉␉␉}␊ |
| 755 | ␉␉␉␉while(rebase_stream[i] & 0x80);␊ |
| 756 | ␉␉␉␉␊ |
| 757 | ␉␉␉␉for (index = 0; index < tmp; ++index)␊ |
| 758 | ␉␉␉␉{␊ |
| 759 | ␉␉␉␉␉//DBG("\tRebasing 0x%X\n", segmentAddress);␊ |
| 760 | ␉␉␉␉␉rebase_location(base + segmentAddress, (char*)base, type);␉␉␉␉␉␊ |
| 761 | ␉␉␉␉␉segmentAddress += sizeof(void*);␊ |
| 762 | ␉␉␉␉}␊ |
| 763 | ␉␉␉␉break;␊ |
| 764 | ␉␉␉␉␊ |
| 765 | ␉␉␉case REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB:␊ |
| 766 | ␉␉␉␉tmp = 0;␊ |
| 767 | ␉␉␉␉bits = 0;␊ |
| 768 | ␉␉␉␉do␊ |
| 769 | ␉␉␉␉{␊ |
| 770 | ␉␉␉␉␉tmp |= (rebase_stream[++i] & 0x7f) << bits;␊ |
| 771 | ␉␉␉␉␉bits += 7;␊ |
| 772 | ␉␉␉␉}␊ |
| 773 | ␉␉␉␉while(rebase_stream[i] & 0x80);␊ |
| 774 | ␉␉␉␉␊ |
| 775 | ␉␉␉␉rebase_location(base + segmentAddress, (char*)base, type);␊ |
| 776 | ␉␉␉␉␊ |
| 777 | ␉␉␉␉segmentAddress += tmp + sizeof(void*);␊ |
| 778 | ␉␉␉␉break;␊ |
| 779 | ␉␉␉␉␊ |
| 780 | ␉␉␉case REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB:␊ |
| 781 | ␉␉␉␉tmp = 0;␊ |
| 782 | ␉␉␉␉bits = 0;␊ |
| 783 | ␉␉␉␉do␊ |
| 784 | ␉␉␉␉{␊ |
| 785 | ␉␉␉␉␉tmp |= (rebase_stream[++i] & 0x7f) << bits;␊ |
| 786 | ␉␉␉␉␉bits += 7;␊ |
| 787 | ␉␉␉␉}␊ |
| 788 | ␉␉␉␉while(rebase_stream[i] & 0x80);␊ |
| 789 | ␉␉␉␉␊ |
| 790 | ␉␉␉␉␊ |
| 791 | ␉␉␉␉tmp2 = 0;␊ |
| 792 | ␉␉␉␉bits = 0;␊ |
| 793 | ␉␉␉␉do␊ |
| 794 | ␉␉␉␉{␊ |
| 795 | ␉␉␉␉␉tmp2 |= (rebase_stream[++i] & 0x7f) << bits;␊ |
| 796 | ␉␉␉␉␉bits += 7;␊ |
| 797 | ␉␉␉␉}␊ |
| 798 | ␉␉␉␉while(rebase_stream[i] & 0x80);␊ |
| 799 | ␉␉␉␉␊ |
| 800 | ␉␉␉␉for (index = 0; index < tmp; ++index)␊ |
| 801 | ␉␉␉␉{␊ |
| 802 | ␉␉␉␉␉␊ |
| 803 | ␉␉␉␉␉rebase_location(base + segmentAddress, (char*)base, type);␊ |
| 804 | ␉␉␉␉␉␊ |
| 805 | ␉␉␉␉␉segmentAddress += tmp2 + sizeof(void*);␊ |
| 806 | ␉␉␉␉}␊ |
| 807 | ␉␉␉␉break;␊ |
| 808 | ␉␉␉default:␊ |
| 809 | ␉␉␉␉break;␊ |
| 810 | ␉␉}␊ |
| 811 | ␉␉i++;␊ |
| 812 | ␉}␊ |
| 813 | }␊ |
| 814 | ␊ |
| 815 | // Based on code from dylibinfo.cpp and ImageLoaderMachOCompressed.cpp␊ |
| 816 | // NOTE: this uses 32bit values, and not 64bit values. ␊ |
| 817 | // There is apossibility that this could cause issues,␊ |
| 818 | // however the macho file is 32 bit, so it shouldn't matter too much␊ |
| 819 | EFI_STATUS bind_macho(char* module, void* base, char* bind_stream, UInt32 size)␊ |
| 820 | {␉␊ |
| 821 | ␉bind_stream += (UInt32)base;␊ |
| 822 | ␉␊ |
| 823 | ␉UInt8 immediate = 0;␊ |
| 824 | ␉UInt8 opcode = 0;␊ |
| 825 | ␉␊ |
| 826 | ␉UInt32 segmentAddress = 0;␊ |
| 827 | ␉␊ |
| 828 | ␉UInt32 address = 0;␊ |
| 829 | ␉␊ |
| 830 | ␉SInt32 addend = 0;␉␉␉// TODO: handle this␊ |
| 831 | ␉␊ |
| 832 | ␉const char* symbolName = NULL;␊ |
| 833 | ␉UInt32 symbolAddr = 0xFFFFFFFF;␊ |
| 834 | ␉␊ |
| 835 | ␉// Temperary variables␊ |
| 836 | ␉UInt8 bits = 0;␊ |
| 837 | ␉UInt32 tmp = 0;␊ |
| 838 | ␉UInt32 tmp2 = 0;␊ |
| 839 | ␉␊ |
| 840 | ␉UInt32 index = 0;␊ |
| 841 | ␉unsigned int i = 0;␊ |
| 842 | ␉␊ |
| 843 | ␉while(i < size)␊ |
| 844 | ␉{␊ |
| 845 | ␉␉immediate = bind_stream[i] & BIND_IMMEDIATE_MASK;␊ |
| 846 | ␉␉opcode = bind_stream[i] & BIND_OPCODE_MASK;␊ |
| 847 | ␉␉␊ |
| 848 | ␉␉␊ |
| 849 | ␉␉switch(opcode)␊ |
| 850 | ␉␉{␊ |
| 851 | ␉␉␉case BIND_OPCODE_DONE:␊ |
| 852 | ␉␉␉␉break;␊ |
| 853 | ␉␉␉␉␊ |
| 854 | ␉␉␉case BIND_OPCODE_SET_DYLIB_ORDINAL_IMM:␊ |
| 855 | {␊ |
| 856 | #if DEBUG_MODULES==2␊ |
| 857 | ␉␉␉␉SInt32 libraryOrdinal = immediate;␊ |
| 858 | ␉␉␉␉DBG("BIND_OPCODE_SET_DYLIB_ORDINAL_IMM: %d\n", libraryOrdinal);␊ |
| 859 | #endif␊ |
| 860 | ␉␉␉␉break;␊ |
| 861 | }␊ |
| 862 | ␉␉␉case BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB:␊ |
| 863 | {␊ |
| 864 | #if DEBUG_MODULES==2␊ |
| 865 | ␉␉␉␉SInt32 libraryOrdinal = 0;␊ |
| 866 | ␉␉␉␉UInt8 bits = 0;␊ |
| 867 | ␉␉␉␉do␊ |
| 868 | ␉␉␉␉{␊ |
| 869 | ␉␉␉␉␉libraryOrdinal |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 870 | ␉␉␉␉␉bits += 7;␊ |
| 871 | ␉␉␉␉}␊ |
| 872 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 873 | ␉␉␉␉␊ |
| 874 | ␉␉␉␉DBG("BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB: %d\n", libraryOrdinal);␊ |
| 875 | #else␊ |
| 876 | do␊ |
| 877 | ␉␉␉␉{␊ |
| 878 | ␉␉␉␉␉i++;␊ |
| 879 | ␉␉␉␉}␊ |
| 880 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 881 | #endif␊ |
| 882 | ␉␉␉␉break;␊ |
| 883 | ␉␉␉}␉␊ |
| 884 | ␉␉␉case BIND_OPCODE_SET_DYLIB_SPECIAL_IMM:␊ |
| 885 | {␊ |
| 886 | #if DEBUG_MODULES==2␊ |
| 887 | // NOTE: this is wrong, fortunately we don't use it␊ |
| 888 | ␉␉␉␉SInt32 libraryOrdinal = -immediate;␊ |
| 889 | ␉␉␉␉DBG("BIND_OPCODE_SET_DYLIB_SPECIAL_IMM: %d\n", libraryOrdinal);␊ |
| 890 | #endif␉␉␊ |
| 891 | ␉␉␉␉break;␊ |
| 892 | ␉␉␉}␉␊ |
| 893 | ␉␉␉case BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM:␊ |
| 894 | {␊ |
| 895 | ␉␉␉␉symbolName = (char*)&bind_stream[++i];␊ |
| 896 | ␉␉␉␉i += strlen((char*)&bind_stream[i]);␊ |
| 897 | #if DEBUG_MODULES==2␊ |
| 898 | ␉␉␉␉UInt8 symbolFlags = immediate;␊ |
| 899 | DBG("BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM: %s, 0x%X\n", symbolName, symbolFlags);␊ |
| 900 | #endif␉␉␉␉␊ |
| 901 | ␉␉␉␉symbolAddr = lookup_all_symbols(NULL ,symbolName);␊ |
| 902 | ␉␉␉␉␊ |
| 903 | ␉␉␉␉break;␊ |
| 904 | }␊ |
| 905 | ␉␉␉case BIND_OPCODE_SET_TYPE_IMM:␊ |
| 906 | {␊ |
| 907 | ␉␉␉␉// Set bind type (pointer, absolute32, pcrel32)␊ |
| 908 | #if DEBUG_MODULES==2␊ |
| 909 | UInt8 type = immediate;␊ |
| 910 | ␉␉␉␉DBG("BIND_OPCODE_SET_TYPE_IMM: %d\n", type);␊ |
| 911 | #endif␊ |
| 912 | ␉␉␉␉break;␊ |
| 913 | }␊ |
| 914 | ␉␉␉case BIND_OPCODE_SET_ADDEND_SLEB:␊ |
| 915 | ␉␉␉␉addend = 0;␊ |
| 916 | ␉␉␉␉bits = 0;␊ |
| 917 | ␉␉␉␉do␊ |
| 918 | ␉␉␉␉{␊ |
| 919 | ␉␉␉␉␉addend |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 920 | ␉␉␉␉␉bits += 7;␊ |
| 921 | ␉␉␉␉}␊ |
| 922 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 923 | ␉␉␉␉␊ |
| 924 | ␉␉␉␉if(!(bind_stream[i-1] & 0x40)) addend *= -1;␊ |
| 925 | #if DEBUG_MODULES==2␊ |
| 926 | ␉␉␉␉DBG("BIND_OPCODE_SET_ADDEND_SLEB: %d\n", addend);␊ |
| 927 | #endif␊ |
| 928 | ␊ |
| 929 | ␉␉␉␉break;␊ |
| 930 | ␉␉␉␉␊ |
| 931 | ␉␉␉case BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:␊ |
| 932 | ␉␉␉{␉␉␉␉␊ |
| 933 | ␉␉␉␉// Locate address␊ |
| 934 | ␉␉␉␉struct segment_command* segCommand = NULL;␉// NOTE: 32bit only␊ |
| 935 | ␉␉␉␉␊ |
| 936 | ␉␉␉␉{␊ |
| 937 | ␉␉␉␉␉unsigned int binIndex = 0;␊ |
| 938 | ␉␉␉␉␉index = 0;␊ |
| 939 | ␉␉␉␉␉do␊ |
| 940 | ␉␉␉␉␉{␊ |
| 941 | ␉␉␉␉␉␉segCommand = base + sizeof(struct mach_header) + binIndex;␊ |
| 942 | ␉␉␉␉␉␉binIndex += segCommand->cmdsize;␊ |
| 943 | ␉␉␉␉␉␉index++;␊ |
| 944 | ␉␉␉␉␉}while(index <= immediate);␊ |
| 945 | ␉␉␉␉}␊ |
| 946 | ␉␉␉␉␊ |
| 947 | ␉␉␉␉␊ |
| 948 | ␉␉␉␉segmentAddress = segCommand->fileoff;␊ |
| 949 | ␉␉␉␉␊ |
| 950 | ␉␉␉␉// Read in offset␊ |
| 951 | ␉␉␉␉tmp = 0;␊ |
| 952 | ␉␉␉␉bits = 0;␊ |
| 953 | ␉␉␉␉do␊ |
| 954 | ␉␉␉␉{␊ |
| 955 | ␉␉␉␉␉tmp |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 956 | ␉␉␉␉␉bits += 7;␊ |
| 957 | ␉␉␉␉}while(bind_stream[i] & 0x80);␊ |
| 958 | ␉␉␉␉␊ |
| 959 | ␉␉␉␉segmentAddress += tmp;␊ |
| 960 | #if DEBUG_MODULES==2␊ |
| 961 | ␉␉␉␉DBG("BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: 0x%X\n", segmentAddress);␊ |
| 962 | #endif␊ |
| 963 | ␉␉␉␉break;␊ |
| 964 | ␉␉␉}␉␉␉␉␊ |
| 965 | ␉␉␉case BIND_OPCODE_ADD_ADDR_ULEB:␊ |
| 966 | ␉␉␉␉// Read in offset␊ |
| 967 | ␉␉␉␉tmp = 0;␊ |
| 968 | ␉␉␉␉bits = 0;␊ |
| 969 | ␉␉␉␉do␊ |
| 970 | ␉␉␉␉{␊ |
| 971 | ␉␉␉␉␉tmp |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 972 | ␉␉␉␉␉bits += 7;␊ |
| 973 | ␉␉␉␉}␊ |
| 974 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 975 | ␉␉␉␉␊ |
| 976 | ␉␉␉␉segmentAddress += tmp;␊ |
| 977 | #if DEBUG_MODULES==2␊ |
| 978 | ␉␉␉␉DBG("BIND_OPCODE_ADD_ADDR_ULEB: 0x%X\n", segmentAddress);␊ |
| 979 | #endif␊ |
| 980 | ␊ |
| 981 | ␉␉␉␉break;␊ |
| 982 | ␉␉␉␉␊ |
| 983 | ␉␉␉case BIND_OPCODE_DO_BIND:␊ |
| 984 | #if DEBUG_MODULES==2␊ |
| 985 | ␉␉␉␉DBG("BIND_OPCODE_DO_BIND\n");␊ |
| 986 | #endif ␊ |
| 987 | ␊ |
| 988 | if(symbolAddr != 0xFFFFFFFF)␊ |
| 989 | ␉␉␉␉{␊ |
| 990 | ␉␉␉␉␉address = segmentAddress + (UInt32)base;␊ |
| 991 | ␉␉␉␉␉␊ |
| 992 | ␉␉␉␉␉bind_location((UInt32*)address, (char*)symbolAddr, addend, BIND_TYPE_POINTER);␊ |
| 993 | ␉␉␉␉}␊ |
| 994 | ␉␉␉␉else if(symbolName && (strcmp(symbolName, SYMBOL_DYLD_STUB_BINDER) != 0))␊ |
| 995 | ␉␉␉␉{␊ |
| 996 | ␉␉␉␉␉printf("Unable to bind symbol %s needed by %s\n", symbolName, module);␊ |
| 997 | getc();␊ |
| 998 | goto error;␊ |
| 999 | ␊ |
| 1000 | ␉␉␉␉}␊ |
| 1001 | ␉␉␉␉␊ |
| 1002 | ␉␉␉␉segmentAddress += sizeof(void*);␊ |
| 1003 | ␉␉␉␉break;␊ |
| 1004 | ␉␉␉␉␊ |
| 1005 | ␉␉␉case BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB:␊ |
| 1006 | #if DEBUG_MODULES==2␊ |
| 1007 | ␉␉␉␉DBG("BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB\n");␊ |
| 1008 | #endif␉␉␊ |
| 1009 | ␉␉␉␉␊ |
| 1010 | ␉␉␉␉// Read in offset␊ |
| 1011 | ␉␉␉␉tmp = 0;␊ |
| 1012 | ␉␉␉␉bits = 0;␊ |
| 1013 | ␉␉␉␉do␊ |
| 1014 | ␉␉␉␉{␊ |
| 1015 | ␉␉␉␉␉tmp |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 1016 | ␉␉␉␉␉bits += 7;␊ |
| 1017 | ␉␉␉␉}␊ |
| 1018 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 1019 | ␉␉␉␉␊ |
| 1020 | ␊ |
| 1021 | if(symbolAddr != 0xFFFFFFFF)␊ |
| 1022 | ␉␉␉␉{␊ |
| 1023 | ␉␉␉␉␉address = segmentAddress + (UInt32)base;␊ |
| 1024 | ␉␉␉␉␉␊ |
| 1025 | ␉␉␉␉␉bind_location((UInt32*)address, (char*)symbolAddr, addend, BIND_TYPE_POINTER);␊ |
| 1026 | ␉␉␉␉}␊ |
| 1027 | ␉␉␉␉else if(symbolName && (strcmp(symbolName, SYMBOL_DYLD_STUB_BINDER) != 0))␊ |
| 1028 | ␉␉␉␉{␊ |
| 1029 | ␉␉␉␉␉printf("Unable to bind symbol %s needed by %s\n", symbolName, module);␊ |
| 1030 | getc();␊ |
| 1031 | goto error; ␊ |
| 1032 | ␊ |
| 1033 | ␉␉␉␉}␊ |
| 1034 | ␊ |
| 1035 | ␉␉␉␉segmentAddress += tmp + sizeof(void*);␊ |
| 1036 | ␉␉␉␉␊ |
| 1037 | ␉␉␉␉␊ |
| 1038 | ␉␉␉␉break;␊ |
| 1039 | ␉␉␉␉␊ |
| 1040 | ␉␉␉case BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED:␊ |
| 1041 | #if DEBUG_MODULES==2␊ |
| 1042 | ␉␉␉␉DBG("BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED\n");␊ |
| 1043 | #endif␉␉␉␉␉␉␊ |
| 1044 | ␊ |
| 1045 | if(symbolAddr != 0xFFFFFFFF)␊ |
| 1046 | ␉␉␉␉{␊ |
| 1047 | ␉␉␉␉␉address = segmentAddress + (UInt32)base;␊ |
| 1048 | ␉␉␉␉␉␊ |
| 1049 | ␉␉␉␉␉bind_location((UInt32*)address, (char*)symbolAddr, addend, BIND_TYPE_POINTER);␊ |
| 1050 | ␉␉␉␉}␊ |
| 1051 | ␉␉␉␉else if(symbolName && (strcmp(symbolName, SYMBOL_DYLD_STUB_BINDER) != 0))␊ |
| 1052 | ␉␉␉␉{␊ |
| 1053 | ␉␉␉␉␉printf("Unable to bind symbol %s needed by %s\n", symbolName, module);␊ |
| 1054 | getc();␊ |
| 1055 | goto error; ␊ |
| 1056 | ␊ |
| 1057 | ␉␉␉␉}␊ |
| 1058 | ␉␉␉␉segmentAddress += (immediate * sizeof(void*)) + sizeof(void*);␉␉␉␉␊ |
| 1059 | ␉␉␉␉␊ |
| 1060 | ␉␉␉␉break;␊ |
| 1061 | ␉␉␉␉␊ |
| 1062 | ␉␉␉case BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB:␊ |
| 1063 | ␉␉␉␉␊ |
| 1064 | ␉␉␉␉tmp = 0;␊ |
| 1065 | ␉␉␉␉bits = 0;␊ |
| 1066 | ␉␉␉␉do␊ |
| 1067 | ␉␉␉␉{␊ |
| 1068 | ␉␉␉␉␉tmp |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 1069 | ␉␉␉␉␉bits += 7;␊ |
| 1070 | ␉␉␉␉}␊ |
| 1071 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 1072 | ␉␉␉␉␊ |
| 1073 | ␉␉␉␉␊ |
| 1074 | ␉␉␉␉tmp2 = 0;␊ |
| 1075 | ␉␉␉␉bits = 0;␊ |
| 1076 | ␉␉␉␉do␊ |
| 1077 | ␉␉␉␉{␊ |
| 1078 | ␉␉␉␉␉tmp2 |= (bind_stream[++i] & 0x7f) << bits;␊ |
| 1079 | ␉␉␉␉␉bits += 7;␊ |
| 1080 | ␉␉␉␉}␊ |
| 1081 | ␉␉␉␉while(bind_stream[i] & 0x80);␊ |
| 1082 | ␉␉␉␉␊ |
| 1083 | #if DEBUG_MODULES==2␊ |
| 1084 | ␉␉␉␉DBG("BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB 0x%X 0x%X\n", tmp, tmp2);␊ |
| 1085 | #endif␉␉␉␉␊ |
| 1086 | ␊ |
| 1087 | if(symbolAddr != 0xFFFFFFFF)␊ |
| 1088 | ␉␉␉␉{␊ |
| 1089 | ␉␉␉␉␉for(index = 0; index < tmp; index++)␊ |
| 1090 | ␉␉␉␉␉{␊ |
| 1091 | ␉␉␉␉␉␉␊ |
| 1092 | ␉␉␉␉␉␉address = segmentAddress + (UInt32)base;␊ |
| 1093 | ␉␉␉␉␉␉␊ |
| 1094 | ␉␉␉␉␉␉bind_location((UInt32*)address, (char*)symbolAddr, addend, BIND_TYPE_POINTER);␊ |
| 1095 | ␉␉␉␉␉␉␊ |
| 1096 | ␉␉␉␉␉␉segmentAddress += tmp2 + sizeof(void*);␊ |
| 1097 | ␉␉␉␉␉}␊ |
| 1098 | ␉␉␉␉}␊ |
| 1099 | ␉␉␉␉else if(symbolName && (strcmp(symbolName, SYMBOL_DYLD_STUB_BINDER) != 0))␊ |
| 1100 | ␉␉␉␉{␊ |
| 1101 | ␉␉␉␉␉printf("Unable to bind symbol %s needed by %s\n", symbolName, module);␊ |
| 1102 | getc();␊ |
| 1103 | goto error; ␊ |
| 1104 | ␊ |
| 1105 | ␉␉␉␉}␉␉␉␉␊ |
| 1106 | ␉␉␉␉␊ |
| 1107 | ␉␉␉␉break;␊ |
| 1108 | ␉␉␉default:␊ |
| 1109 | ␉␉␉␉break;␊ |
| 1110 | ␉␉␉␉␊ |
| 1111 | ␉␉}␊ |
| 1112 | ␉␉i++;␊ |
| 1113 | ␉}␊ |
| 1114 | return EFI_SUCCESS;␊ |
| 1115 | error:␊ |
| 1116 | return EFI_NOT_FOUND;␊ |
| 1117 | }␊ |
| 1118 | ␊ |
| 1119 | void rebase_location(UInt32* location, char* base, int type)␊ |
| 1120 | {␉␊ |
| 1121 | ␉switch(type)␊ |
| 1122 | ␉{␊ |
| 1123 | ␉␉case REBASE_TYPE_POINTER:␊ |
| 1124 | ␉␉case REBASE_TYPE_TEXT_ABSOLUTE32:␊ |
| 1125 | ␉␉␉*location += (UInt32)base;␊ |
| 1126 | ␉␉␉break;␊ |
| 1127 | ␉␉␉␊ |
| 1128 | ␉␉default:␊ |
| 1129 | ␉␉␉break;␊ |
| 1130 | ␉}␊ |
| 1131 | }␊ |
| 1132 | ␊ |
| 1133 | void bind_location(UInt32* location, char* value, UInt32 addend, int type)␊ |
| 1134 | {␉␊ |
| 1135 | ␉// do actual update␊ |
| 1136 | ␉char* newValue = value + addend;␊ |
| 1137 | ␉␊ |
| 1138 | ␉switch (type) {␊ |
| 1139 | ␉␉case BIND_TYPE_POINTER:␊ |
| 1140 | ␉␉case BIND_TYPE_TEXT_ABSOLUTE32:␊ |
| 1141 | ␉␉␉break;␊ |
| 1142 | ␉␉␉␊ |
| 1143 | ␉␉case BIND_TYPE_TEXT_PCREL32:␊ |
| 1144 | ␉␉␉newValue -= ((UInt32)location + 4);␊ |
| 1145 | ␉␉␉␊ |
| 1146 | ␉␉␉break;␊ |
| 1147 | ␉␉default:␊ |
| 1148 | ␉␉␉return;␊ |
| 1149 | ␉}␊ |
| 1150 | ␉*location = (UInt32)newValue;␊ |
| 1151 | ␉␊ |
| 1152 | ␉␊ |
| 1153 | }␊ |
| 1154 | ␊ |
| 1155 | /*␊ |
| 1156 | * add_symbol␊ |
| 1157 | * This function adds a symbol from a module to the list of known symbols ␊ |
| 1158 | * possibly change to a pointer and add this to the Symbol module so that it can␊ |
| 1159 | * adjust it's internal symbol list (sort) to optimize locating new symbols␊ |
| 1160 | * NOTE: returns the address if the symbol is "start", else returns 0xFFFFFFFF␊ |
| 1161 | */␊ |
| 1162 | long long add_symbol(char* module,char* symbol, long long addr, char is64)␊ |
| 1163 | {␊ |
| 1164 | ␉if(is64) return 0xFFFFFFFF; // Fixme␊ |
| 1165 | ␉␊ |
| 1166 | ␉// This only can handle 32bit symbols ␊ |
| 1167 | ␉symbolList_t* new_entry= malloc(sizeof(symbolList_t));␊ |
| 1168 | ␉DBG("Adding symbol %s at 0x%X\n", symbol, addr);␊ |
| 1169 | ␉if (new_entry)␊ |
| 1170 | ␉{␉␊ |
| 1171 | ␉␉new_entry->next = moduleSymbols;␊ |
| 1172 | ␉␉␊ |
| 1173 | ␉␉moduleSymbols = new_entry;␊ |
| 1174 | ␉␉␊ |
| 1175 | ␉␉new_entry->addr = (UInt32)addr;␊ |
| 1176 | new_entry->module = module;␊ |
| 1177 | ␉␉new_entry->symbol = symbol;␊ |
| 1178 | ␉␉return addr;␊ |
| 1179 | ␉}␉␊ |
| 1180 | ␉␊ |
| 1181 | ␉return 0xFFFFFFFF;␊ |
| 1182 | ␉␊ |
| 1183 | }␊ |
| 1184 | ␊ |
| 1185 | // Look for symbols using the Smbols moduel function.␊ |
| 1186 | // If non are found, look through the list of module symbols␊ |
| 1187 | unsigned int lookup_all_symbols(const char* module, const char* name)␊ |
| 1188 | {␊ |
| 1189 | ␊ |
| 1190 | unsigned int addr = 0xFFFFFFFF;␊ |
| 1191 | ␊ |
| 1192 | do {␊ |
| 1193 | ␊ |
| 1194 | if ((module != NULL) && (strcmp(module,SYMBOLS_BUNDLE) != 0))␊ |
| 1195 | break; ␊ |
| 1196 | ␊ |
| 1197 | if(lookup_symbol && (UInt32)lookup_symbol != 0xFFFFFFFF)␊ |
| 1198 | {␊ |
| 1199 | addr = lookup_symbol(name, &strcmp);␊ |
| 1200 | if(addr != 0xFFFFFFFF)␊ |
| 1201 | {␊ |
| 1202 | DBG("Internal symbol %s located at 0x%X\n", name, addr);␊ |
| 1203 | goto out;␊ |
| 1204 | }␊ |
| 1205 | } ␊ |
| 1206 | ␊ |
| 1207 | } while (0);␊ |
| 1208 | ␊ |
| 1209 | ␊ |
| 1210 | ␉{␊ |
| 1211 | ␉␉symbolList_t* entry = moduleSymbols;␊ |
| 1212 | ␉␉while(entry)␊ |
| 1213 | ␉␉{␊ |
| 1214 | if ((module != NULL) && (strcmp(entry->module,module) != 0))␊ |
| 1215 | {␊ |
| 1216 | entry = entry->next;␊ |
| 1217 | continue; ␊ |
| 1218 | }␊ |
| 1219 | ␊ |
| 1220 | if(strcmp(entry->symbol, name) == 0)␊ |
| 1221 | {␊ |
| 1222 | DBG("External symbol %s located at 0x%X\n", name, entry->addr);␊ |
| 1223 | addr = entry->addr;␊ |
| 1224 | goto out;␊ |
| 1225 | }␊ |
| 1226 | else␊ |
| 1227 | {␊ |
| 1228 | entry = entry->next;␊ |
| 1229 | } ␊ |
| 1230 | ␊ |
| 1231 | ␉␉}␊ |
| 1232 | ␉}␊ |
| 1233 | ␉␊ |
| 1234 | #if DEBUG_MODULES␊ |
| 1235 | ␉if(strcmp(name, SYMBOL_DYLD_STUB_BINDER) != 0)␊ |
| 1236 | ␉{␊ |
| 1237 | ␉␉verbose("Unable to locate symbol %s\n", name);␊ |
| 1238 | ␉␉getc();␊ |
| 1239 | ␉}␊ |
| 1240 | #endif␊ |
| 1241 | out:␊ |
| 1242 | return addr;␊ |
| 1243 | ␊ |
| 1244 | }␊ |
| 1245 | ␊ |
| 1246 | ␊ |
| 1247 | /*␊ |
| 1248 | * parse the symbol table␊ |
| 1249 | * Lookup any undefined symbols␊ |
| 1250 | */␊ |
| 1251 | ␊ |
| 1252 | unsigned int handle_symtable(char *module, UInt32 base, struct symtab_command* symtabCommand, long long(*symbol_handler)(char*, char*, long long, char), char is64)␊ |
| 1253 | {␉␉␊ |
| 1254 | ␉unsigned int module_start = 0xFFFFFFFF;␊ |
| 1255 | ␉␊ |
| 1256 | ␉UInt32 symbolIndex = 0;␊ |
| 1257 | if (!symtabCommand) {␊ |
| 1258 | return 0xFFFFFFFF;␊ |
| 1259 | }␊ |
| 1260 | ␉char* symbolString = base + (char*)symtabCommand->stroff;␊ |
| 1261 | ␉//char* symbolTable = base + symtabCommand->symoff;␊ |
| 1262 | ␉if(!is64)␊ |
| 1263 | ␉{␊ |
| 1264 | ␉␉struct nlist* symbolEntry = (void*)base + symtabCommand->symoff;␊ |
| 1265 | ␉␉while(symbolIndex < symtabCommand->nsyms)␊ |
| 1266 | ␉␉{␉␉␉␉␉␉␊ |
| 1267 | ␉␉␉if(symbolEntry->n_value)␊ |
| 1268 | ␉␉␉{␉␉␉␉␊ |
| 1269 | ␉␉␉␉if(strstr(symbolString + symbolEntry->n_un.n_strx, "module_start") || (strcmp(symbolString + symbolEntry->n_un.n_strx, "start") == 0))␊ |
| 1270 | ␉␉␉␉{␊ |
| 1271 | ␉␉␉␉␉module_start = base + symbolEntry->n_value;␊ |
| 1272 | ␉␉␉␉␉DBG("n_value %x module_start %x\n", (unsigned)symbolEntry->n_value, (unsigned)module_start);␊ |
| 1273 | ␉␉␉␉}␊ |
| 1274 | ␉␉␉␉else␊ |
| 1275 | ␉␉␉␉{␊ |
| 1276 | ␉␉␉␉␉symbol_handler(module, symbolString + symbolEntry->n_un.n_strx, (long long)base + symbolEntry->n_value, is64);␊ |
| 1277 | ␉␉␉␉}␊ |
| 1278 | #if DEBUG_MODULES␊ |
| 1279 | ␉␉␉␉bool isTexT = (((unsigned)symbolEntry->n_value > (unsigned)vmaddr) && ((unsigned)(vmaddr + vmsize) > (unsigned)symbolEntry->n_value ));␊ |
| 1280 | ␉␉␉␉printf("%s %s\n", isTexT ? "__TEXT :" : "__DATA(OR ANY) :", symbolString + symbolEntry->n_un.n_strx);␊ |
| 1281 | #if DEBUG_MODULES==2␉␊ |
| 1282 | ␉␉␉␉␊ |
| 1283 | ␉␉␉␉if(strcmp(symbolString + symbolEntry->n_un.n_strx, "_BootHelp_txt") == 0)␊ |
| 1284 | ␉␉␉␉{␊ |
| 1285 | ␉␉␉␉␉long long addr = (long long)base + symbolEntry->n_value;␊ |
| 1286 | ␉␉␉␉␉unsigned char *BootHelp = NULL;␊ |
| 1287 | ␉␉␉␉␉BootHelp = (unsigned char*)(UInt32)addr;␉␉␉␉␉␊ |
| 1288 | ␉␉␉␉␉printf("method 1: __DATA : BootHelp_txt[0] %x\n", BootHelp[0]);␊ |
| 1289 | ␉␉␉␉␉␊ |
| 1290 | ␉␉␉␉␉long long addr2 = symbolEntry->n_value;␊ |
| 1291 | ␉␉␉␉␉unsigned char *BootHelp2 = NULL;␊ |
| 1292 | ␉␉␉␉␉BootHelp2 = (unsigned char*)(UInt32)addr2;␉␉␉␉␉␊ |
| 1293 | ␉␉␉␉␉printf("method 2: __DATA : BootHelp_txt[0] %x\n", BootHelp2[0]);␊ |
| 1294 | ␉␉␉␉}␊ |
| 1295 | #endif␊ |
| 1296 | #endif␊ |
| 1297 | ␉␉␉␉␊ |
| 1298 | ␉␉␉}␊ |
| 1299 | ␉␉␉␊ |
| 1300 | ␉␉␉symbolEntry++;␊ |
| 1301 | ␉␉␉symbolIndex++;␉// TODO remove␊ |
| 1302 | ␉␉}␊ |
| 1303 | ␉}␊ |
| 1304 | ␉else␊ |
| 1305 | ␉{␊ |
| 1306 | ␉␉struct nlist_64* symbolEntry = (void*)base + symtabCommand->symoff;␊ |
| 1307 | ␉␉// NOTE First entry is *not* correct, but we can ignore it (i'm getting radar:// right now)␉␊ |
| 1308 | ␉␉while(symbolIndex < symtabCommand->nsyms)␊ |
| 1309 | ␉␉{␉␊ |
| 1310 | ␉␉␉␊ |
| 1311 | ␉␉␉if(strstr(symbolString + symbolEntry->n_un.n_strx, "module_start") || (strcmp(symbolString + symbolEntry->n_un.n_strx, "start") == 0))␊ |
| 1312 | ␉␉␉{␊ |
| 1313 | ␉␉␉␉module_start = (unsigned int)(base + symbolEntry->n_value);␊ |
| 1314 | ␉␉␉}␊ |
| 1315 | ␉␉␉else␊ |
| 1316 | ␉␉␉{␊ |
| 1317 | ␉␉␉␉symbol_handler(module, symbolString + symbolEntry->n_un.n_strx, (long long)base + symbolEntry->n_value, is64);␊ |
| 1318 | ␉␉␉}␊ |
| 1319 | ␉␉␉␊ |
| 1320 | ␉␉␉symbolEntry++;␊ |
| 1321 | ␉␉␉symbolIndex++;␉// TODO remove␊ |
| 1322 | ␉␉}␊ |
| 1323 | ␉}␊ |
| 1324 | ␉␊ |
| 1325 | ␉return module_start;␊ |
| 1326 | ␉␊ |
| 1327 | }␊ |
| 1328 | ␊ |
| 1329 | ␊ |
| 1330 | /*␊ |
| 1331 | * Locate the symbol for an already loaded function and modify the beginning of␊ |
| 1332 | * the function to jump directly to the new one␊ |
| 1333 | * example: replace_system_function("_getc", &replacement);␊ |
| 1334 | * replace_function(module_name,"_getc", &replacement);␊ |
| 1335 | * replace_function_any("_getc", &replacement);␊ |
| 1336 | */␊ |
| 1337 | EFI_STATUS replace_function(const char* module, const char* symbol, void* newAddress)␊ |
| 1338 | {␉␉ ␊ |
| 1339 | ␉// TODO: look into using the next four bytes of the function instead␊ |
| 1340 | ␉// Most functions should support this, as they probably will be at ␊ |
| 1341 | ␉// least 10 bytes long, but you never know, this is sligtly safer as␊ |
| 1342 | ␉// function can be as small as 6 bytes.␊ |
| 1343 | ␉UInt32 addr = lookup_all_symbols(module, symbol);␊ |
| 1344 | ␉␊ |
| 1345 | ␉char* binary = (char*)addr;␊ |
| 1346 | ␉if(addr != 0xFFFFFFFF)␊ |
| 1347 | ␉{␊ |
| 1348 | ␉␉UInt32* jumpPointer = malloc(sizeof(UInt32));␊ |
| 1349 | ␉␉if (!jumpPointer) {␊ |
| 1350 | ␉␉␉return EFI_OUT_OF_RESOURCES;␊ |
| 1351 | ␉␉}␊ |
| 1352 | ␉␉␊ |
| 1353 | ␉␉*binary++ = 0xFF;␉// Jump␊ |
| 1354 | ␉␉*binary++ = 0x25;␉// Long Jump␊ |
| 1355 | ␉␉*((UInt32*)binary) = (UInt32)jumpPointer;␊ |
| 1356 | ␉␉␊ |
| 1357 | ␉␉*jumpPointer = (UInt32)newAddress;␊ |
| 1358 | ␉␉␊ |
| 1359 | ␉␉return EFI_SUCCESS;␊ |
| 1360 | ␉}␊ |
| 1361 | ␉␊ |
| 1362 | ␉return EFI_NOT_FOUND;␊ |
| 1363 | ␉␊ |
| 1364 | }␊ |
| 1365 | ␊ |
| 1366 | EFI_STATUS replace_system_function(const char* symbol, void* newAddress)␊ |
| 1367 | {␉␉ ␊ |
| 1368 | ␉␊ |
| 1369 | ␉return replace_function(SYMBOLS_BUNDLE,symbol,newAddress);␊ |
| 1370 | ␉␊ |
| 1371 | }␊ |
| 1372 | ␊ |
| 1373 | EFI_STATUS replace_function_any(const char* symbol, void* newAddress)␊ |
| 1374 | {␉␉ ␊ |
| 1375 | ␉␊ |
| 1376 | ␉return replace_function(NULL,symbol,newAddress);␊ |
| 1377 | ␉␊ |
| 1378 | }␊ |
| 1379 | /*␊ |
| 1380 | * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.␊ |
| 1381 | *␊ |
| 1382 | * @APPLE_LICENSE_HEADER_START@␊ |
| 1383 | * ␊ |
| 1384 | * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊ |
| 1385 | * Reserved. This file contains Original Code and/or Modifications of␊ |
| 1386 | * Original Code as defined in and that are subject to the Apple Public␊ |
| 1387 | * Source License Version 2.0 (the 'License'). You may not use this file␊ |
| 1388 | * except in compliance with the License. Please obtain a copy of the␊ |
| 1389 | * License at http://www.apple.com/publicsource and read it before using␊ |
| 1390 | * this file.␊ |
| 1391 | * ␊ |
| 1392 | * The Original Code and all software distributed under the License are␊ |
| 1393 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 1394 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 1395 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 1396 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the␊ |
| 1397 | * License for the specific language governing rights and limitations␊ |
| 1398 | * under the License.␊ |
| 1399 | * ␊ |
| 1400 | * @APPLE_LICENSE_HEADER_END@␊ |
| 1401 | */␊ |
| 1402 | /*␊ |
| 1403 | * drivers.c - Driver Loading Functions.␊ |
| 1404 | *␊ |
| 1405 | * Copyright (c) 2000 Apple Computer, Inc.␊ |
| 1406 | *␊ |
| 1407 | * DRI: Josh de Cesare␊ |
| 1408 | */␊ |
| 1409 | ␊ |
| 1410 | /*␊ |
| 1411 | * Copyright 2012 Cadet-petit Armel <armelcadetpetit@gmail.com>. All rights reserved.␊ |
| 1412 | *␊ |
| 1413 | * Cleaned, Added (runtime) bundles support.␊ |
| 1414 | *␊ |
| 1415 | */␊ |
| 1416 | #include <mach-o/fat.h>␊ |
| 1417 | #include <libkern/OSByteOrder.h>␊ |
| 1418 | #include <mach/machine.h>␊ |
| 1419 | ␊ |
| 1420 | #include "sl.h"␊ |
| 1421 | #include "xml.h"␊ |
| 1422 | ␊ |
| 1423 | struct Module { ␊ |
| 1424 | ␉struct Module *nextModule;␊ |
| 1425 | ␉long willLoad;␊ |
| 1426 | ␉TagPtr dict;␊ |
| 1427 | TagPtr personalities;␊ |
| 1428 | ␉//pool_t workspace;␊ |
| 1429 | ␉char *plistAddr;␊ |
| 1430 | ␉long plistLength;␊ |
| 1431 | ␉char *executablePath;␊ |
| 1432 | ␉char *bundlePath;␊ |
| 1433 | ␉long bundlePathLength;␊ |
| 1434 | };␊ |
| 1435 | typedef struct Module Module, *ModulePtr;␊ |
| 1436 | ␊ |
| 1437 | ␊ |
| 1438 | enum {␊ |
| 1439 | ␉kCFBundleType2,␊ |
| 1440 | ␉kCFBundleType3␊ |
| 1441 | };␊ |
| 1442 | ␊ |
| 1443 | enum {␊ |
| 1444 | ␉BundlePriorityNull = 0,␊ |
| 1445 | ␉BundlePriorityInit = 1,␊ |
| 1446 | ␉BundlePrioritySystem = 2,␊ |
| 1447 | ␉BundlePrioritySystemLib = 3,␊ |
| 1448 | BundlePriorityNormalPriority = 4,␊ |
| 1449 | BundlePriorityLowestPriority = 99,␊ |
| 1450 | ␉BundlePriorityEnd = 100 // can not be assigned␊ |
| 1451 | ␊ |
| 1452 | };␊ |
| 1453 | ␊ |
| 1454 | static ModulePtr gModuleHead;␊ |
| 1455 | static char * gModulesSpec;␊ |
| 1456 | static char * gDriverSpec;␊ |
| 1457 | static char * gFileSpec;␊ |
| 1458 | static char * gTempSpec;␊ |
| 1459 | static char * gFileName;␊ |
| 1460 | static int gLowestLoadPriority;␊ |
| 1461 | ␊ |
| 1462 | static long ParseXML(char *buffer, ModulePtr *module);␊ |
| 1463 | static ModulePtr FindBundle( char * bundle_id );␊ |
| 1464 | ␊ |
| 1465 | static void␊ |
| 1466 | FreeBundleSupport( void )␊ |
| 1467 | {␊ |
| 1468 | ␊ |
| 1469 | if ( gModulesSpec ) free(gModulesSpec);␊ |
| 1470 | if ( gDriverSpec) free(gDriverSpec);␊ |
| 1471 | if ( gFileSpec ) free(gFileSpec);␊ |
| 1472 | if ( gTempSpec ) free(gTempSpec);␊ |
| 1473 | if ( gFileName ) free(gFileName);␊ |
| 1474 | }␊ |
| 1475 | ␊ |
| 1476 | //==========================================================================␊ |
| 1477 | // InitBundleSupport␊ |
| 1478 | ␊ |
| 1479 | long␊ |
| 1480 | InitBundleSupport( void )␊ |
| 1481 | {␊ |
| 1482 | ␉DBG("InitBundleSupport\n");␊ |
| 1483 | ␊ |
| 1484 | static bool BundleSet = false;␊ |
| 1485 | ␊ |
| 1486 | if (BundleSet == true) return 0; ␊ |
| 1487 | ␊ |
| 1488 | gModulesSpec = malloc( 4096 );␊ |
| 1489 | gDriverSpec = malloc( 4096 );␊ |
| 1490 | gFileSpec = malloc( 4096 );␊ |
| 1491 | gTempSpec = malloc( 4096 );␊ |
| 1492 | gFileName = malloc( 4096 );␉␊ |
| 1493 | ␊ |
| 1494 | if ( !gModulesSpec || !gDriverSpec || !gFileSpec || !gTempSpec || !gFileName )␊ |
| 1495 | goto error;␊ |
| 1496 | ␊ |
| 1497 | BundleSet = true;␊ |
| 1498 | ␊ |
| 1499 | return 0;␊ |
| 1500 | error:␊ |
| 1501 | FreeBundleSupport();␊ |
| 1502 | return 1;␊ |
| 1503 | }␊ |
| 1504 | ␊ |
| 1505 | //==========================================================================␊ |
| 1506 | // LoadBundles␊ |
| 1507 | ␊ |
| 1508 | long LoadBundles( char * dirSpec )␊ |
| 1509 | {␉␊ |
| 1510 | ␉DBG("LoadBundles\n");␊ |
| 1511 | ␊ |
| 1512 | if ( InitBundleSupport() != 0 )␊ |
| 1513 | return 1;␊ |
| 1514 | ␉␊ |
| 1515 | ␉␊ |
| 1516 | ␉strlcpy(gModulesSpec, dirSpec, 4096);␊ |
| 1517 | strlcat(gModulesSpec, "Modules", 4096 - 1);␊ |
| 1518 | FileLoadBundles(gModulesSpec, 0);␉␉␊ |
| 1519 | ␊ |
| 1520 | ␉␊ |
| 1521 | MatchBundlesLibraries();␊ |
| 1522 | ␉␊ |
| 1523 | LoadMatchedBundles();␊ |
| 1524 | ␊ |
| 1525 | ␉DBG("LoadBundles Finished\n");␊ |
| 1526 | ␊ |
| 1527 | return 0;␊ |
| 1528 | }␊ |
| 1529 | ␊ |
| 1530 | //==========================================================================␊ |
| 1531 | // FileLoadBundles␊ |
| 1532 | long␊ |
| 1533 | FileLoadBundles( char * dirSpec, long plugin )␊ |
| 1534 | {␊ |
| 1535 | long ret, length, flags, time, bundleType;␊ |
| 1536 | long long␉ index;␊ |
| 1537 | long result = -1;␊ |
| 1538 | const char * name;␊ |
| 1539 | ␊ |
| 1540 | ␉DBG("FileLoadBundles in %s\n",dirSpec);␊ |
| 1541 | ␊ |
| 1542 | index = 0;␊ |
| 1543 | while (1) {␊ |
| 1544 | ret = GetDirEntry(dirSpec, &index, &name, &flags, &time);␊ |
| 1545 | if (ret == -1) break;␊ |
| 1546 | ␉␉␊ |
| 1547 | // Make sure this is a directory.␊ |
| 1548 | if ((flags & kFileTypeMask) != kFileTypeDirectory) continue;␊ |
| 1549 | ␊ |
| 1550 | // Make sure this is a kext.␊ |
| 1551 | length = strlen(name);␊ |
| 1552 | if (strcmp(name + length - 7, ".bundle")) continue;␊ |
| 1553 | ␉␉␊ |
| 1554 | // Save the file name.␊ |
| 1555 | strlcpy(gFileName, name, 4096);␊ |
| 1556 | ␉␉DBG("Load Bundles %s\n",gFileName);␊ |
| 1557 | ␊ |
| 1558 | // Determine the bundle type.␊ |
| 1559 | sprintf(gTempSpec, "%s/%s", dirSpec, gFileName);␊ |
| 1560 | ret = GetFileInfo(gTempSpec, "Contents", &flags, &time);␊ |
| 1561 | if (ret == 0) bundleType = kCFBundleType2;␊ |
| 1562 | else bundleType = kCFBundleType3;␊ |
| 1563 | ␉␉␊ |
| 1564 | ␉␉DBG("Bundles type = %d\n",bundleType);␊ |
| 1565 | ␊ |
| 1566 | if (!plugin)␊ |
| 1567 | sprintf(gDriverSpec, "%s/%s/%sPlugIns", dirSpec, gFileName,␊ |
| 1568 | (bundleType == kCFBundleType2) ? "Contents/" : "");␊ |
| 1569 | ␉␉␊ |
| 1570 | ret = LoadBundlePList( dirSpec, gFileName, bundleType);␊ |
| 1571 | ␉␉␊ |
| 1572 | if (result != 0)␊ |
| 1573 | ␉␉␉result = ret;␊ |
| 1574 | ␉␉␊ |
| 1575 | if (!plugin) ␊ |
| 1576 | ␉␉␉FileLoadBundles(gDriverSpec, 1);␊ |
| 1577 | }␊ |
| 1578 | ␉␊ |
| 1579 | return result;␊ |
| 1580 | }␊ |
| 1581 | ␊ |
| 1582 | ␊ |
| 1583 | static void add_bundle(ModulePtr module,char* name)␊ |
| 1584 | {␊ |
| 1585 | ␉ModulePtr new_entry= malloc(sizeof(Module));␊ |
| 1586 | ␉DBG("Adding bundle %s \n", name );␊ |
| 1587 | ␉if (new_entry)␊ |
| 1588 | ␉{␉␊ |
| 1589 | ␉␉new_entry->nextModule = gModuleHead;␊ |
| 1590 | ␉␉␊ |
| 1591 | ␉␉gModuleHead = new_entry;␊ |
| 1592 | ␉␉␊ |
| 1593 | ␉␉new_entry->executablePath = module->executablePath;␊ |
| 1594 | new_entry->bundlePath = module->bundlePath;␊ |
| 1595 | new_entry->bundlePathLength = module->bundlePathLength;␊ |
| 1596 | new_entry->plistAddr = module->plistAddr;␊ |
| 1597 | new_entry->willLoad = module->willLoad;␊ |
| 1598 | new_entry->dict = module->dict;␊ |
| 1599 | new_entry->plistLength = module->plistLength;␊ |
| 1600 | new_entry->personalities = module->personalities;␊ |
| 1601 | ␊ |
| 1602 | ␉}␉␊ |
| 1603 | ␉␊ |
| 1604 | }␊ |
| 1605 | ␊ |
| 1606 | //==========================================================================␊ |
| 1607 | // LoadBundlePList␊ |
| 1608 | ␊ |
| 1609 | long␊ |
| 1610 | LoadBundlePList( char * dirSpec, char * name, long bundleType )␊ |
| 1611 | {␊ |
| 1612 | long length, executablePathLength, bundlePathLength;␊ |
| 1613 | ModulePtr module = 0;␊ |
| 1614 | char * buffer = 0;␊ |
| 1615 | char * tmpExecutablePath = 0;␊ |
| 1616 | char * tmpBundlePath = 0;␊ |
| 1617 | long ret = -1;␊ |
| 1618 | ␉DBG("LoadBundlePList\n");␊ |
| 1619 | ␊ |
| 1620 | do {␊ |
| 1621 | // Save the driver path.␊ |
| 1622 | ␊ |
| 1623 | sprintf(gFileSpec, "%s/%s/%s", dirSpec, name,␊ |
| 1624 | (bundleType == kCFBundleType2) ? "Contents/MacOS/" : "");␊ |
| 1625 | executablePathLength = strlen(gFileSpec) + 1;␊ |
| 1626 | ␉␉␊ |
| 1627 | tmpExecutablePath = malloc(executablePathLength);␊ |
| 1628 | if (tmpExecutablePath == 0) break;␊ |
| 1629 | ␊ |
| 1630 | strlcpy(tmpExecutablePath, gFileSpec, executablePathLength);␊ |
| 1631 | ␊ |
| 1632 | sprintf(gFileSpec, "%s/%s", dirSpec, name);␊ |
| 1633 | bundlePathLength = strlen(gFileSpec) + 1;␊ |
| 1634 | ␉␉␊ |
| 1635 | tmpBundlePath = malloc(bundlePathLength);␊ |
| 1636 | if (tmpBundlePath == 0) break;␊ |
| 1637 | ␉␉␊ |
| 1638 | strlcpy(tmpBundlePath, gFileSpec, bundlePathLength);␊ |
| 1639 | ␊ |
| 1640 | ␊ |
| 1641 | // Construct the file spec to the plist, then load it.␊ |
| 1642 | ␉␉␊ |
| 1643 | sprintf(gFileSpec, "%s/%s/%sInfo.plist", dirSpec, name,␊ |
| 1644 | (bundleType == kCFBundleType2) ? "Contents/" : "");␊ |
| 1645 | ␉␉␊ |
| 1646 | ␉␉DBG("Loading Bundle PList %s\n",gFileSpec);␊ |
| 1647 | ␊ |
| 1648 | length = LoadFile(gFileSpec);␊ |
| 1649 | if (length == -1) break;␊ |
| 1650 | ␉␉␊ |
| 1651 | length = length + 1;␊ |
| 1652 | buffer = malloc(length);␊ |
| 1653 | if (buffer == 0) break;␊ |
| 1654 | ␉␉␊ |
| 1655 | strlcpy(buffer, (char *)kLoadAddr, length);␊ |
| 1656 | ␉␉␊ |
| 1657 | // Parse the plist.␊ |
| 1658 | ␉␉␊ |
| 1659 | ret = ParseXML(buffer, &module);␊ |
| 1660 | if (ret != 0 ) { printf("Unable to read plist of %s",name); break; }␊ |
| 1661 | ␉␉␊ |
| 1662 | ␉␉if (!module) {ret = -1;break;} // Should never happen but it will make the compiler happy␊ |
| 1663 | ␊ |
| 1664 | // Allocate memory for the driver path and the plist.␊ |
| 1665 | ␊ |
| 1666 | module->executablePath = tmpExecutablePath;␊ |
| 1667 | module->bundlePath = tmpBundlePath;␊ |
| 1668 | module->bundlePathLength = bundlePathLength;␊ |
| 1669 | module->plistAddr = malloc(length);␊ |
| 1670 | ␉␉␊ |
| 1671 | if ((module->executablePath == 0) || (module->bundlePath == 0) || (module->plistAddr == 0))␊ |
| 1672 | {␊ |
| 1673 | if ( module->plistAddr ) free(module->plistAddr);␊ |
| 1674 | ␉␉␉ret = -1;␊ |
| 1675 | break;␊ |
| 1676 | } ␊ |
| 1677 | ␉␉␊ |
| 1678 | // Add the plist to the module.␊ |
| 1679 | ␉␉␊ |
| 1680 | strlcpy(module->plistAddr, (char *)kLoadAddr, length);␊ |
| 1681 | module->plistLength = length;␊ |
| 1682 | ␉␉␊ |
| 1683 | // Add the module to the module list.␊ |
| 1684 | ␊ |
| 1685 | add_bundle(module, name); ␊ |
| 1686 | ␊ |
| 1687 | ␊ |
| 1688 | ret = 0;␊ |
| 1689 | }␊ |
| 1690 | while (0);␊ |
| 1691 | ␊ |
| 1692 | if ( buffer ) free( buffer );␊ |
| 1693 | if ( module ) free( module );␊ |
| 1694 | ␊ |
| 1695 | if (ret != 0) {␊ |
| 1696 | if ( tmpExecutablePath ) free( tmpExecutablePath );␊ |
| 1697 | if ( tmpBundlePath ) free( tmpBundlePath );␊ |
| 1698 | }␉␊ |
| 1699 | return ret;␊ |
| 1700 | }␊ |
| 1701 | ␊ |
| 1702 | #define WillLoadBundles \␊ |
| 1703 | module = gModuleHead; \␊ |
| 1704 | while (module != NULL) \␊ |
| 1705 | { \␊ |
| 1706 | if (module->willLoad == willLoad) \␊ |
| 1707 | { \␊ |
| 1708 | prop = XMLGetProperty(module->dict, kPropCFBundleExecutable); \␊ |
| 1709 | \␊ |
| 1710 | if (prop != 0) \␊ |
| 1711 | { \␊ |
| 1712 | fileName = prop->string; \␊ |
| 1713 | sprintf(gFileSpec, "%s%s", module->executablePath, fileName); \␊ |
| 1714 | \␊ |
| 1715 | module_start = (void*)load_module((char*)fileName,gFileSpec); \␊ |
| 1716 | if(!module_start || (*module_start == (void*)0xFFFFFFFF)) \␊ |
| 1717 | { \␊ |
| 1718 | if (module->willLoad > BundlePrioritySystemLib) \␊ |
| 1719 | { \␊ |
| 1720 | module->willLoad = BundlePriorityNull ; \␊ |
| 1721 | printf("Unable to start %s\n", gFileSpec); \␊ |
| 1722 | } \␊ |
| 1723 | } else module_start(); \␊ |
| 1724 | if (module->willLoad == BundlePrioritySystem) \␊ |
| 1725 | { \␊ |
| 1726 | lookup_symbol = (void*)lookup_all_symbols(SYMBOLS_BUNDLE,SYMBOL_LOOKUP_SYMBOL); \␊ |
| 1727 | if((UInt32)lookup_symbol != 0xFFFFFFFF) \␊ |
| 1728 | { \␊ |
| 1729 | msglog("%s successfully Loaded.\n", gFileSpec); \␊ |
| 1730 | } else return -1; \␊ |
| 1731 | } \␊ |
| 1732 | } \␊ |
| 1733 | } \␊ |
| 1734 | module = module->nextModule; \␊ |
| 1735 | } ␊ |
| 1736 | ␊ |
| 1737 | //==========================================================================␊ |
| 1738 | // LoadMatchedBundles␊ |
| 1739 | ␊ |
| 1740 | long LoadMatchedBundles( void )␊ |
| 1741 | {␊ |
| 1742 | TagPtr prop;␊ |
| 1743 | ModulePtr module;␊ |
| 1744 | char *fileName;␊ |
| 1745 | void (*module_start)(void);␊ |
| 1746 | long willLoad;␊ |
| 1747 | ␊ |
| 1748 | ␉DBG("LoadMatchedBundles\n");␊ |
| 1749 | ␊ |
| 1750 | ␉int priority_end = MIN(gLowestLoadPriority+1, BundlePriorityEnd);␊ |
| 1751 | ␊ |
| 1752 | for (willLoad = BundlePrioritySystem; willLoad < priority_end ; willLoad++)␊ |
| 1753 | {␊ |
| 1754 | ␊ |
| 1755 | WillLoadBundles ;␊ |
| 1756 | ␊ |
| 1757 | }␊ |
| 1758 | ␊ |
| 1759 | return 0;␊ |
| 1760 | }␊ |
| 1761 | ␊ |
| 1762 | //==========================================================================␊ |
| 1763 | // MatchBundlesLibraries␊ |
| 1764 | ␊ |
| 1765 | long MatchBundlesLibraries( void )␊ |
| 1766 | {␊ |
| 1767 | ␊ |
| 1768 | TagPtr prop, prop2;␊ |
| 1769 | ModulePtr module, module2,dummy_module;␊ |
| 1770 | ␉␊ |
| 1771 | // Check for active modules with the same Bundle IDs or same principal class, only one must remain (except for type 3 aka system libs)␊ |
| 1772 | {␊ |
| 1773 | module = gModuleHead;␊ |
| 1774 | ␊ |
| 1775 | while (module != 0)␊ |
| 1776 | {␊ |
| 1777 | if (!(module->willLoad > BundlePriorityInit)) // if the module load priority is not higher than initialized, continue␊ |
| 1778 | {␊ |
| 1779 | module = module->nextModule;␊ |
| 1780 | continue;␊ |
| 1781 | }␊ |
| 1782 | ␊ |
| 1783 | prop = XMLGetProperty(module->dict, kPropNSPrincipalClass);␊ |
| 1784 | prop2 = XMLGetProperty(module->dict, kPropCFBundleIdentifier); ␊ |
| 1785 | ␊ |
| 1786 | if (prop != 0 && prop2 != 0)␊ |
| 1787 | { ␊ |
| 1788 | module2 = gModuleHead;␊ |
| 1789 | ␊ |
| 1790 | TagPtr prop3,prop4;␊ |
| 1791 | ␊ |
| 1792 | while (module2 != 0)␊ |
| 1793 | {␊ |
| 1794 | prop3 = XMLGetProperty(module2->dict, kPropNSPrincipalClass);␊ |
| 1795 | prop4 = XMLGetProperty(module2->dict, kPropCFBundleIdentifier); ␊ |
| 1796 | ␊ |
| 1797 | if ((prop3 != 0) && (prop4 != 0) && (module != module2))␊ |
| 1798 | {␊ |
| 1799 | ␊ |
| 1800 | if ((module2->willLoad == BundlePrioritySystemLib) && ((strcmp(prop2->string, prop4->string)!= 0) /*&& (!strcmp(prop->string, prop3->string))*/)) {␊ |
| 1801 | continue;␊ |
| 1802 | }␊ |
| 1803 | ␊ |
| 1804 | if ((!strcmp(prop2->string, prop4->string)) || (!strcmp(prop->string, prop3->string))) {␊ |
| 1805 | if (module2->willLoad > BundlePriorityNull) module2->willLoad = BundlePriorityNull;␊ |
| 1806 | }␊ |
| 1807 | ␊ |
| 1808 | }␊ |
| 1809 | module2 = module2->nextModule;␊ |
| 1810 | } ␊ |
| 1811 | ␊ |
| 1812 | }␊ |
| 1813 | ␊ |
| 1814 | module = module->nextModule;␊ |
| 1815 | }␊ |
| 1816 | }␊ |
| 1817 | ␊ |
| 1818 | // Check for dependencies (it works in most cases, still a little buggy but should be sufficient for what we have to do, ␊ |
| 1819 | ␉// clearly the Achilles' heel of this implementation, please use dependencies with caution !!!)␊ |
| 1820 | dummy_module = gModuleHead;␊ |
| 1821 | while (dummy_module != 0)␊ |
| 1822 | {␊ |
| 1823 | module = gModuleHead;␊ |
| 1824 | ␊ |
| 1825 | while (module != 0)␊ |
| 1826 | {␊ |
| 1827 | if (module->willLoad > BundlePrioritySystemLib)␊ |
| 1828 | { ␊ |
| 1829 | prop = XMLGetProperty(module->dict, kPropOSBundleLibraries);␊ |
| 1830 | if (prop != 0)␊ |
| 1831 | {␊ |
| 1832 | prop = prop->tag;␊ |
| 1833 | while (prop != 0)␊ |
| 1834 | {␊ |
| 1835 | module2 = gModuleHead;␊ |
| 1836 | while (module2 != 0)␊ |
| 1837 | {␊ |
| 1838 | prop2 = XMLGetProperty(module2->dict, kPropCFBundleIdentifier);␊ |
| 1839 | if ((prop2 != 0) && (!strncmp(prop->string, prop2->string, strlen( prop->string))))␊ |
| 1840 | {␊ |
| 1841 | // found a parent␊ |
| 1842 | ␊ |
| 1843 | if (module2->willLoad > BundlePriorityInit)␊ |
| 1844 | { ␊ |
| 1845 | // parent is active␊ |
| 1846 | if (module->willLoad == BundlePriorityNull) {␊ |
| 1847 | module->willLoad = BundlePriorityNormalPriority;␊ |
| 1848 | } ␊ |
| 1849 | ␊ |
| 1850 | // Check if the version of the parent >= version of the child␊ |
| 1851 | if (strtol(XMLCastString ( XMLGetProperty(module2->dict,"CFBundleShortVersionString") ), NULL, 10) >= strtol(XMLCastString( prop->tag ), NULL, 10)) {␊ |
| 1852 | ␊ |
| 1853 | if ((module2->willLoad >= module->willLoad) && (module->willLoad > BundlePrioritySystemLib))␊ |
| 1854 | ␉␉␉␉␉␉␉␉␉␉␉module->willLoad = MIN(MAX(module->willLoad, module2->willLoad+1), BundlePriorityLowestPriority); // child must be loaded after the parent, this allow the to find symbols of the parent while we bind the child.␊ |
| 1855 | ␊ |
| 1856 | } else {␊ |
| 1857 | module->willLoad = BundlePriorityNull;␊ |
| 1858 | goto nextmodule;␊ |
| 1859 | }␊ |
| 1860 | break;␊ |
| 1861 | }␊ |
| 1862 | ␊ |
| 1863 | }␊ |
| 1864 | ␉␉␉␉␉␉␉if (module->willLoad != BundlePriorityNull) module->willLoad = BundlePriorityNull;␊ |
| 1865 | module2 = module2->nextModule;␊ |
| 1866 | }␊ |
| 1867 | if (module->willLoad == BundlePriorityNull) goto nextmodule;␊ |
| 1868 | prop = prop->tagNext;␊ |
| 1869 | }␊ |
| 1870 | }␊ |
| 1871 | }␊ |
| 1872 | nextmodule:␊ |
| 1873 | module = module->nextModule;␊ |
| 1874 | }␊ |
| 1875 | ␊ |
| 1876 | ␉␉dummy_module = dummy_module->nextModule;␊ |
| 1877 | }␉␊ |
| 1878 | ␉␊ |
| 1879 | // Get the lowest load priority␊ |
| 1880 | {␊ |
| 1881 | gLowestLoadPriority = BundlePriorityNormalPriority;␊ |
| 1882 | module = gModuleHead;␊ |
| 1883 | ␊ |
| 1884 | while (module != 0)␊ |
| 1885 | {␊ |
| 1886 | if (module->willLoad > BundlePriorityInit)␊ |
| 1887 | { ␊ |
| 1888 | gLowestLoadPriority = MIN(module->willLoad, BundlePriorityLowestPriority); ␊ |
| 1889 | }␊ |
| 1890 | module = module->nextModule;␊ |
| 1891 | }␊ |
| 1892 | }␊ |
| 1893 | ␊ |
| 1894 | return 0;␊ |
| 1895 | }␊ |
| 1896 | ␊ |
| 1897 | ␊ |
| 1898 | //==========================================================================␊ |
| 1899 | // FindBundle␊ |
| 1900 | ␊ |
| 1901 | static ModulePtr␊ |
| 1902 | FindBundle( char * bundle_id )␊ |
| 1903 | {␊ |
| 1904 | ModulePtr module;␊ |
| 1905 | TagPtr prop;␊ |
| 1906 | ␉DBG("FindBundle %s\n",bundle_id);␊ |
| 1907 | ␊ |
| 1908 | module = gModuleHead;␊ |
| 1909 | ␊ |
| 1910 | while (module != 0)␊ |
| 1911 | {␊ |
| 1912 | prop = XMLGetProperty(module->dict, kPropCFBundleIdentifier);␊ |
| 1913 | if ((prop != 0) && !strcmp(bundle_id, prop->string)) break;␊ |
| 1914 | module = module->nextModule;␊ |
| 1915 | }␊ |
| 1916 | ␊ |
| 1917 | return module;␊ |
| 1918 | }␊ |
| 1919 | ␊ |
| 1920 | //==========================================================================␊ |
| 1921 | // GetBundleDict␊ |
| 1922 | ␊ |
| 1923 | void *␊ |
| 1924 | GetBundleDict( char * bundle_id )␊ |
| 1925 | {␊ |
| 1926 | ModulePtr module;␊ |
| 1927 | ␉DBG("GetBundleDict %s\n",bundle_id);␊ |
| 1928 | ␊ |
| 1929 | module = FindBundle( bundle_id );␊ |
| 1930 | ␊ |
| 1931 | if (module != 0)␊ |
| 1932 | {␊ |
| 1933 | return (void *)module->dict;␊ |
| 1934 | }␊ |
| 1935 | ␊ |
| 1936 | return 0;␊ |
| 1937 | }␊ |
| 1938 | ␊ |
| 1939 | //==========================================================================␊ |
| 1940 | // GetBundlePersonality␊ |
| 1941 | ␊ |
| 1942 | void *␊ |
| 1943 | GetBundlePersonality( char * bundle_id )␊ |
| 1944 | {␊ |
| 1945 | ModulePtr module;␊ |
| 1946 | ␉DBG("GetBundlePersonalities %s\n",bundle_id);␊ |
| 1947 | ␊ |
| 1948 | module = FindBundle( bundle_id );␊ |
| 1949 | ␊ |
| 1950 | if (module != 0)␊ |
| 1951 | {␊ |
| 1952 | return (void *)module->personalities;␊ |
| 1953 | }␊ |
| 1954 | ␊ |
| 1955 | return 0;␊ |
| 1956 | }␊ |
| 1957 | ␊ |
| 1958 | //==========================================================================␊ |
| 1959 | // GetBundlePath␊ |
| 1960 | ␊ |
| 1961 | char *␊ |
| 1962 | GetBundlePath( char * bundle_id )␊ |
| 1963 | {␊ |
| 1964 | ModulePtr module;␊ |
| 1965 | ␉DBG("GetBundlePath %s\n",bundle_id);␊ |
| 1966 | ␊ |
| 1967 | module = FindBundle( bundle_id );␊ |
| 1968 | ␊ |
| 1969 | if (module != 0)␊ |
| 1970 | {␊ |
| 1971 | return module->bundlePath;␊ |
| 1972 | }␊ |
| 1973 | ␊ |
| 1974 | return 0;␊ |
| 1975 | }␊ |
| 1976 | ␊ |
| 1977 | //==========================================================================␊ |
| 1978 | // ParseXML␊ |
| 1979 | ␊ |
| 1980 | static long␊ |
| 1981 | ParseXML( char * buffer, ModulePtr * module )␊ |
| 1982 | {␊ |
| 1983 | ␉long length, pos;␊ |
| 1984 | ␉TagPtr moduleDict, prop;␊ |
| 1985 | ␉ModulePtr tmpModule;␊ |
| 1986 | ␉␊ |
| 1987 | pos = 0;␊ |
| 1988 | ␉DBG("ParseXML\n");␊ |
| 1989 | ␊ |
| 1990 | ␉if (!module) {␊ |
| 1991 | return -1;␊ |
| 1992 | }␊ |
| 1993 | ␉␊ |
| 1994 | while (1)␊ |
| 1995 | {␊ |
| 1996 | length = XMLParseNextTag(buffer + pos, &moduleDict);␊ |
| 1997 | if (length == -1) break;␊ |
| 1998 | ␉␉␊ |
| 1999 | pos += length;␊ |
| 2000 | ␉␉␊ |
| 2001 | if (moduleDict == 0) continue;␊ |
| 2002 | if (moduleDict->type == kTagTypeDict) break;␊ |
| 2003 | ␉␉␊ |
| 2004 | XMLFreeTag(moduleDict);␊ |
| 2005 | }␊ |
| 2006 | ␉␊ |
| 2007 | if (length == -1) ␊ |
| 2008 | {␊ |
| 2009 | return -1;␊ |
| 2010 | }␊ |
| 2011 | ␉␊ |
| 2012 | ␊ |
| 2013 | tmpModule = malloc(sizeof(Module));␊ |
| 2014 | if (tmpModule == 0)␊ |
| 2015 | {␊ |
| 2016 | XMLFreeTag(moduleDict);␊ |
| 2017 | return -1;␊ |
| 2018 | }␊ |
| 2019 | tmpModule->dict = moduleDict;␊ |
| 2020 | ␊ |
| 2021 | do {␊ |
| 2022 | prop = XMLGetProperty(moduleDict, kPropOSBundleEnabled);␊ |
| 2023 | if ((prop != 0) && prop->string)␊ |
| 2024 | {␊ |
| 2025 | if ( (strlen(prop->string) >= 1) && (prop->string[0] == 'N' || prop->string[0] == 'n') )␊ |
| 2026 | {␊ |
| 2027 | tmpModule->willLoad = 0;␊ |
| 2028 | break;␊ |
| 2029 | }␊ |
| 2030 | }␊ |
| 2031 | prop = XMLGetProperty(moduleDict, kPropNSPrincipalClass);␊ |
| 2032 | if ((prop != 0) && prop->string)␊ |
| 2033 | {␊ |
| 2034 | if (!strcmp(prop->string,SYSLIB_CLASS)) ␊ |
| 2035 | {␊ |
| 2036 | tmpModule->willLoad = BundlePrioritySystemLib;␊ |
| 2037 | break;␊ |
| 2038 | }␊ |
| 2039 | if (!strcmp(prop->string,SYS_CLASS)) ␊ |
| 2040 | {␊ |
| 2041 | tmpModule->willLoad = BundlePrioritySystem;␊ |
| 2042 | break;␊ |
| 2043 | }␊ |
| 2044 | } ␊ |
| 2045 | ␊ |
| 2046 | prop = XMLGetProperty(moduleDict, kPropOSBundlePriority);␊ |
| 2047 | if ((prop != 0) && prop->string)␊ |
| 2048 | {␊ |
| 2049 | int tmpwillLoad;␊ |
| 2050 | if ((tmpwillLoad = strtoul(prop->string, NULL, 10)) > BundlePrioritySystemLib )␊ |
| 2051 | { ␊ |
| 2052 | tmpModule->willLoad = MIN(tmpwillLoad, BundlePriorityLowestPriority);␊ |
| 2053 | break;␊ |
| 2054 | ␊ |
| 2055 | }␊ |
| 2056 | ␊ |
| 2057 | } ␊ |
| 2058 | ␊ |
| 2059 | tmpModule->willLoad = BundlePriorityNormalPriority;␊ |
| 2060 | ␊ |
| 2061 | } while (0);␊ |
| 2062 | ␊ |
| 2063 | // Get the personalities.␊ |
| 2064 | tmpModule->personalities = XMLGetProperty(moduleDict, kPropIOKitPersonalities);␊ |
| 2065 | ␊ |
| 2066 | *module = tmpModule;␊ |
| 2067 | ␉␊ |
| 2068 | ␉␊ |
| 2069 | ␉␊ |
| 2070 | return 0;␊ |
| 2071 | }␊ |
| 2072 | |
