| 1 | ␉/*␊ |
| 2 | * Copyright (c) 2010 Evan Lojewski. All rights reserved.␊ |
| 3 | *␉␊ |
| 4 | *␉KextPather␊ |
| 5 | *␉This is an experimental module that I'm looking into implimenting.␊ |
| 6 | *␉The main purpose is to replace the need for programs such as ␊ |
| 7 | * NetbookInstaller's kext patching routines. THis way, Apple's kexts can be␊ |
| 8 | * patched whe loaded instead. (eg: GMA950 kext, Bluetooth + Wifi kexts)␊ |
| 9 | */␊ |
| 10 | ␊ |
| 11 | #include "libsaio.h"␊ |
| 12 | #include "zlib.h"␊ |
| 13 | #include "kext_patcher.h"␊ |
| 14 | #include "boot.h"␊ |
| 15 | #include "bootstruct.h"␊ |
| 16 | #include "pci.h"␊ |
| 17 | #include "drivers.h"␊ |
| 18 | #include "mkext.h"␊ |
| 19 | #include "modules.h"␊ |
| 20 | #include "hex_editor.h"␊ |
| 21 | ␊ |
| 22 | ␊ |
| 23 | #define kHDACodec␉␉␉␉"HDACodec"␊ |
| 24 | ␊ |
| 25 | ␊ |
| 26 | #ifndef DEBUG_KEXT_PATCHER␊ |
| 27 | #define DEBUG_KEXT_PATCHER 1␊ |
| 28 | #endif␊ |
| 29 | ␊ |
| 30 | #if DEBUG_KEXT_PATCHER␊ |
| 31 | #define DBG(x...)␉printf(x)␊ |
| 32 | #else␊ |
| 33 | #define DBG(x...)␊ |
| 34 | #endif␊ |
| 35 | ␊ |
| 36 | ␊ |
| 37 | bool patch_kext(TagPtr plist, char* plistbuffer, void* start);␊ |
| 38 | bool patch_hda_kext(TagPtr plist, char* plistbuffer, void* start);␊ |
| 39 | bool patch_hda_controller(TagPtr plist, char* plistbuffer, void* start);␊ |
| 40 | ␊ |
| 41 | ␊ |
| 42 | ␊ |
| 43 | static void * z_alloc(void *, u_int items, u_int size);␊ |
| 44 | static void z_free(void *, void *ptr);␊ |
| 45 | ␊ |
| 46 | #if UNUSED␊ |
| 47 | void KextPatcher_hook(void* current, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6);␊ |
| 48 | bool patch_gma_kexts(TagPtr plist, char* plistbuffer, void* start);␊ |
| 49 | bool patch_bcm_kext(TagPtr plist, char* plistbuffer, void* start);␊ |
| 50 | int chartohex(char c);␊ |
| 51 | uint16_t patch_gma_deviceid = 0;␊ |
| 52 | uint16_t patch_bcm_deviceid = 0;␊ |
| 53 | // TODO: add detection code / a method for users to enter the id␊ |
| 54 | uint16_t patch_hda_codec = 0;␊ |
| 55 | ␊ |
| 56 | #define NEEDS_PATCHING␉␉(patch_bcm_deviceid || patch_gma_deviceid || patch_hda_codec)␊ |
| 57 | #endif␊ |
| 58 | ␊ |
| 59 | typedef struct z_mem {␊ |
| 60 | uint32_t alloc_size;␊ |
| 61 | uint8_t data[0];␊ |
| 62 | } z_mem;␊ |
| 63 | ␊ |
| 64 | /*␊ |
| 65 | * Space allocation and freeing routines for use by zlib routines.␊ |
| 66 | */␊ |
| 67 | void *␊ |
| 68 | z_alloc(void * notused __unused, u_int num_items, u_int size)␊ |
| 69 | {␊ |
| 70 | void * result = NULL;␊ |
| 71 | z_mem * zmem = NULL;␊ |
| 72 | uint32_t total = num_items * size;␊ |
| 73 | uint32_t allocSize = total + sizeof(zmem);␊ |
| 74 | ␊ |
| 75 | zmem = (z_mem *)malloc(allocSize);␊ |
| 76 | if (!zmem) {␊ |
| 77 | goto finish;␊ |
| 78 | }␊ |
| 79 | zmem->alloc_size = allocSize;␊ |
| 80 | result = (void *)&(zmem->data);␊ |
| 81 | finish:␊ |
| 82 | return result;␊ |
| 83 | }␊ |
| 84 | ␊ |
| 85 | void␊ |
| 86 | z_free(void * notused __unused, void * ptr)␊ |
| 87 | {␊ |
| 88 | uint32_t * skipper = (uint32_t *)ptr - 1;␊ |
| 89 | z_mem * zmem = (z_mem *)skipper;␊ |
| 90 | free((void *)zmem);␊ |
| 91 | return;␊ |
| 92 | }␊ |
| 93 | ␊ |
| 94 | ␊ |
| 95 | //unsigned long Mkext_Alder32( unsigned char * buffer, long length );␊ |
| 96 | static unsigned long␊ |
| 97 | Mkext_Alder32( unsigned char * buffer, long length )␊ |
| 98 | {␊ |
| 99 | long cnt;␊ |
| 100 | unsigned long result, lowHalf, highHalf;␊ |
| 101 | ␊ |
| 102 | lowHalf = 1;␊ |
| 103 | highHalf = 0;␊ |
| 104 | ␉␊ |
| 105 | ␉for ( cnt = 0; cnt < length; cnt++ )␊ |
| 106 | {␊ |
| 107 | if ((cnt % 5000) == 0)␊ |
| 108 | {␊ |
| 109 | lowHalf %= 65521L;␊ |
| 110 | highHalf %= 65521L;␊ |
| 111 | }␊ |
| 112 | ␉␉␊ |
| 113 | lowHalf += buffer[cnt];␊ |
| 114 | highHalf += lowHalf;␊ |
| 115 | }␊ |
| 116 | ␉␊ |
| 117 | ␉lowHalf %= 65521L;␊ |
| 118 | ␉highHalf %= 65521L;␊ |
| 119 | ␉␊ |
| 120 | ␉result = (highHalf << 16) | lowHalf;␊ |
| 121 | ␉␊ |
| 122 | ␉return result;␊ |
| 123 | }␊ |
| 124 | ␊ |
| 125 | /**␊ |
| 126 | ** KextPatcher_start -> module start␊ |
| 127 | **␉␉Notified the module system that this module will hook into the ␊ |
| 128 | **␉␉LoadMatchedModules and LoadDriverMKext functions␊ |
| 129 | **/␊ |
| 130 | void KextPatcher_start()␊ |
| 131 | {␉␉␊ |
| 132 | ␉// Hooks into the following:␊ |
| 133 | ␉//␉execute_hook("LoadDriverMKext", (void*)package, &length, NULL, NULL, NULL, NULL);␊ |
| 134 | ␉// execute_hook("LoadMatchedModules", module, &length, executableAddr, NULL, NULL, NULL);␊ |
| 135 | #if UNUSED␊ |
| 136 | ␉register_hook_callback("PCIDevice", &KextPatcher_hook);␊ |
| 137 | #endif␊ |
| 138 | ␉//register_hook_callback("LoadMatchedModules", &kext_loaded); ␊ |
| 139 | ␉register_hook_callback("LoadDriverMKext", &mkext_loaded); ␊ |
| 140 | ␊ |
| 141 | }␊ |
| 142 | ␊ |
| 143 | /**␊ |
| 144 | ** kext_loaded -> Called whenever a kext is in read into memory␊ |
| 145 | **␉␉This function will be used to patch kexts ( eg AppleInteIntegratedFramebuffer)␊ |
| 146 | **␉␉and their plists when they are loaded into memmory␊ |
| 147 | **/␊ |
| 148 | void kext_loaded(void* moduletmp, void* lengthprt, void* executableAddr, void* arg4, void* arg5, void* arg6)␊ |
| 149 | {␊ |
| 150 | ␉␊ |
| 151 | ␉//ModulePtr module = moduletmp;␊ |
| 152 | ␉//long length = *(long*)lengthprt;␊ |
| 153 | ␉//long length2 = strlen(module->plistAddr);␊ |
| 154 | ␉// *(long*)lengthprt = length2 + 5 * 1024 * 1024;␊ |
| 155 | ␊ |
| 156 | ␉//printf("Loading %s, lenght is %d, executable is 0x%X\n", module->plistAddr, length, executableAddr);␊ |
| 157 | ␉//getc();␊ |
| 158 | }␊ |
| 159 | ␊ |
| 160 | /**␊ |
| 161 | ** mkext_loaded -> Called whenever an mkext is in read into memory␊ |
| 162 | **␉␉This function will be used to patch mkext. Matching kexts will be␊ |
| 163 | **␉␉Extracted, modified, and then compressed again. Note: I need to determine␊ |
| 164 | **␉␉what sort of slowdown this will cause and if it's worth implimenting.␊ |
| 165 | **/␊ |
| 166 | ␊ |
| 167 | void mkext_loaded(void* filespec, void* packagetmp, void* lengthtmp, void* arg4, void* arg5, void* arg6)␊ |
| 168 | {␊ |
| 169 | #if UNUSED␊ |
| 170 | ␉const char* hda_codec;␊ |
| 171 | ␉int len = 0;␊ |
| 172 | ␉␊ |
| 173 | ␉if (getValueForKey(kHDACodec, &hda_codec, &len, &bootInfo->bootConfig))␊ |
| 174 | ␉{␊ |
| 175 | ␉␉int index = 0;␊ |
| 176 | ␉␉while(len)␊ |
| 177 | ␉␉{␊ |
| 178 | ␉␉␉patch_hda_codec <<= 4;␊ |
| 179 | ␉␉␉patch_hda_codec |= chartohex(hda_codec[index]);␊ |
| 180 | ␉␉␉len--;␊ |
| 181 | ␉␉␉index++;␊ |
| 182 | ␉␉}␊ |
| 183 | ␉}␊ |
| 184 | ␉␉␊ |
| 185 | ␉if(!NEEDS_PATCHING) return;␉// No need to apply a patch, hardware doesn't need it␊ |
| 186 | #endif␉␊ |
| 187 | ␉int version = 0;␊ |
| 188 | ␉//int length = *((int*)lengthtmp);␊ |
| 189 | ␉mkext_basic_header* package = (mkext_basic_header*)packagetmp;␊ |
| 190 | ␊ |
| 191 | ␉// Verify the MKext.␊ |
| 192 | if (( MKEXT_GET_MAGIC(package)␉␉!= MKEXT_MAGIC ) ||␊ |
| 193 | ( MKEXT_GET_SIGNATURE(package)␉!= MKEXT_SIGN ) ||␊ |
| 194 | ( MKEXT_GET_LENGTH(package)␉␉> kLoadSize )␉ ||␊ |
| 195 | ( MKEXT_GET_CHECKSUM(package) !=␊ |
| 196 | ␉␉ Mkext_Alder32((unsigned char *)&package->version, MKEXT_GET_LENGTH(package) - 0x10) ) )␊ |
| 197 | {␊ |
| 198 | ␉␉return;␊ |
| 199 | ␉␉// Don't try to patch a b␊ |
| 200 | }␉␊ |
| 201 | ␉␉␊ |
| 202 | ␉/*␊ |
| 203 | ␉if(strcmp(filespec, "/System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext") == 0)␊ |
| 204 | ␉{␊ |
| 205 | ␉␉printf("Invalidating mkext %s\n", filespec);␊ |
| 206 | ␉␉// 10.6 cache folder. Doesn't contain certain extensions we need, so invalidate it.␊ |
| 207 | ␉␉//package->adler32++;␊ |
| 208 | ␉␉// NOTE: double check that this is needed␊ |
| 209 | ␉␉package->magic = 0x00;␊ |
| 210 | ␉␉return;␊ |
| 211 | ␉}*/␊ |
| 212 | ␉␊ |
| 213 | ␉␊ |
| 214 | ␉version = MKEXT_GET_VERSION(package);␊ |
| 215 | ␉␊ |
| 216 | ␉if(version == 0x01008000) // mkext1␊ |
| 217 | ␉{␊ |
| 218 | ␉␉// mkext1 uses lzss␊ |
| 219 | ␉␉mkext1_header* package = (mkext1_header*)packagetmp;␊ |
| 220 | ␉␉int i;␊ |
| 221 | ␉␉for(i = 0; i < MKEXT_GET_COUNT(package); i++)␊ |
| 222 | ␉␉{␊ |
| 223 | ␉␉␉DBG("Parsing kext %d\n", i);␊ |
| 224 | ␉␉␉//mkext_kext* kext = MKEXT1_GET_KEXT(package, i);␊ |
| 225 | ␉␉␉// uses decompress_lzss␊ |
| 226 | ␉␉␉// TODO: handle kext␊ |
| 227 | ␊ |
| 228 | ␉␉}␊ |
| 229 | ␉}␊ |
| 230 | ␉else if((version & 0xFFFF0000) == 0x02000000) // mkext2␊ |
| 231 | ␉{␉␉␊ |
| 232 | ␉␉// mkext2 uses zlib␉␉␊ |
| 233 | ␉␉mkext2_header* package = (mkext2_header*)packagetmp;␊ |
| 234 | ␉␉z_stream zstream;␊ |
| 235 | ␉␉bool zstream_inited = false;␊ |
| 236 | ␉␉int zlib_result;␊ |
| 237 | ␉␉int plist_offset = MKEXT2_GET_PLIST(package);␊ |
| 238 | ␉␉␊ |
| 239 | ␉␉char* plist = malloc(MKEXT2_GET_PLIST_FULLSIZE(package));␊ |
| 240 | ␉␉␊ |
| 241 | ␉␉bzero(&zstream, sizeof(zstream));␉␉␊ |
| 242 | ␉␉zstream.next_in = (UInt8*)((char*)package + plist_offset);␊ |
| 243 | ␉␉zstream.avail_in = MKEXT2_GET_PLIST_COMPSIZE(package);␊ |
| 244 | ␉␉␊ |
| 245 | ␉␉zstream.next_out = (UInt8*)plist;␊ |
| 246 | ␉␉zstream.avail_out = MKEXT2_GET_PLIST_FULLSIZE(package);␊ |
| 247 | ␉␉␊ |
| 248 | ␉␉zstream.zalloc = z_alloc;␊ |
| 249 | ␉␉zstream.zfree = z_free;␊ |
| 250 | ␉␉␉␉␉␉␉␉␊ |
| 251 | ␉␉zlib_result = inflateInit(&zstream);␊ |
| 252 | ␉␉if (Z_OK != zlib_result)␊ |
| 253 | ␉␉{␊ |
| 254 | ␉␉␉printf("ZLIB Error: %s\n", zstream.msg);␊ |
| 255 | ␉␉␉getc();␊ |
| 256 | ␉␉}␊ |
| 257 | ␉␉else ␊ |
| 258 | ␉␉{␊ |
| 259 | ␉␉␉zstream_inited = true;␊ |
| 260 | ␉␉}␊ |
| 261 | ␊ |
| 262 | ␉␉␊ |
| 263 | ␉␉zlib_result = inflate(&zstream, Z_FINISH);␊ |
| 264 | ␉␉if (zstream_inited) inflateEnd(&zstream);␊ |
| 265 | ␊ |
| 266 | ␉␉DBG("Inflated result is %d, in: %d bytes, out: %d bytes\n", zlib_result, zstream.total_in, zstream.total_out);␊ |
| 267 | ␉␉␊ |
| 268 | ␉␉if (zlib_result == Z_STREAM_END || zlib_result == Z_OK)␊ |
| 269 | ␉␉{␉␉␉␊ |
| 270 | ␉␉␉config_file_t plistData;␊ |
| 271 | ␉␉␉config_file_t allDicts;␊ |
| 272 | ␉␉␉bzero(&plistData, sizeof(plistData));␊ |
| 273 | ␉␉␉bzero(&allDicts, sizeof(allDicts));␊ |
| 274 | ␉␉␉␊ |
| 275 | ␉␉␉XMLParseFile( plist, &plistData.dictionary );␊ |
| 276 | ␊ |
| 277 | ␉␉␉int count = 0;␊ |
| 278 | ␊ |
| 279 | ␉␉␉allDicts.dictionary = XMLGetProperty(plistData.dictionary, kMKEXTInfoDictionariesKey);␊ |
| 280 | ␉␉␉count = XMLTagCount(allDicts.dictionary);␊ |
| 281 | ␊ |
| 282 | ␉␉␉DBG("Plist contains %d kexts\n", count);␉␉␉␊ |
| 283 | ␉␉␉␉␉␉␊ |
| 284 | ␉␉␉bool patched = false;␊ |
| 285 | ␉␉␉␊ |
| 286 | ␉␉␉for(; count > 0 ;count-- )␊ |
| 287 | ␉␉␉{␊ |
| 288 | ␉␉␉␉TagPtr kextEntry = XMLGetElement(allDicts.dictionary, count);␊ |
| 289 | ␉␉␉␉patched |= patch_kext(kextEntry, plist, package);␊ |
| 290 | ␉␉␉}␊ |
| 291 | ␉␉␉␉␉␉␊ |
| 292 | ␉␉␉if(patched)␊ |
| 293 | ␉␉␉{␉␉␉␉␊ |
| 294 | ␉␉␉␉zstream_inited = false;␊ |
| 295 | ␉␉␉␉// Recompress the plist␊ |
| 296 | ␉␉␉␉bzero(&zstream, sizeof(zstream));␉␉␊ |
| 297 | ␉␉␉␉zstream.next_in = (UInt8*)plist;␊ |
| 298 | ␉␉␉␉zstream.next_out = (UInt8*)package + plist_offset;␊ |
| 299 | ␉␉␉␉zstream.avail_in = MKEXT2_GET_PLIST_FULLSIZE(package);␊ |
| 300 | ␉␉␉␉zstream.avail_out = MKEXT2_GET_PLIST_FULLSIZE(package)<<2;␉// Give us some extra free space, just in case␊ |
| 301 | ␉␉␉␉zstream.zalloc = Z_NULL;␊ |
| 302 | ␉␉␉␉zstream.zfree = Z_NULL;␊ |
| 303 | ␉␉␉␉zstream.opaque = Z_NULL;␊ |
| 304 | ␉␉␉␉␊ |
| 305 | ␉␉␉␉␊ |
| 306 | ␉␉␉␉zlib_result = deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,15, 8 /* memLevel */, Z_DEFAULT_STRATEGY);␊ |
| 307 | ␉␉␉␉if (Z_OK != zlib_result) {␊ |
| 308 | ␉␉␉␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊ |
| 309 | ␉␉␉␉␉getc();␊ |
| 310 | ␉␉␉␉}␊ |
| 311 | ␉␉␉␉else ␊ |
| 312 | ␉␉␉␉{␊ |
| 313 | ␉␉␉␉␉zstream_inited = true;␊ |
| 314 | ␉␉␉␉}␊ |
| 315 | ␉␉␉␉␊ |
| 316 | ␉␉␉␉zlib_result = deflate(&zstream, Z_FINISH);␊ |
| 317 | ␉␉␉␉␊ |
| 318 | ␉␉␉␉if (zlib_result == Z_STREAM_END)␊ |
| 319 | ␉␉␉␉{␊ |
| 320 | ␉␉␉␉␉DBG("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, MKEXT2_GET_PLIST_FULLSIZE(package));␊ |
| 321 | ␉␉␉␉␉␊ |
| 322 | ␉␉␉␉} ␊ |
| 323 | ␉␉␉␉else if (zlib_result == Z_OK)␊ |
| 324 | ␉␉␉␉{␊ |
| 325 | ␉␉␉␉␉/* deflate filled output buffer, meaning the data doesn't compress.␊ |
| 326 | ␉␉␉␉␉ */␊ |
| 327 | ␉␉␉␉␉DBG("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, MKEXT2_GET_PLIST_FULLSIZE(package));␊ |
| 328 | ␉␉␉␉␉␊ |
| 329 | ␉␉␉␉} ␊ |
| 330 | ␉␉␉␉else if (zlib_result != Z_STREAM_ERROR)␊ |
| 331 | ␉␉␉␉{␊ |
| 332 | ␉␉␉␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊ |
| 333 | ␉␉␉␉␉getc();␊ |
| 334 | ␉␉␉␉}␊ |
| 335 | ␉␉␉␉␊ |
| 336 | ␉␉␉␉if(zstream.total_out != MKEXT2_GET_PLIST_COMPSIZE(package))␊ |
| 337 | ␉␉␉␉{␊ |
| 338 | ␉␉␉␉␉// Update the mkext length␊ |
| 339 | ␉␉␉␉␉MKEXT2_HDR_CAST(package)->length = MKEXT_SWAP(MKEXT_GET_LENGTH(package) - MKEXT2_GET_PLIST_COMPSIZE(package) + zstream.total_out);␊ |
| 340 | ␉␉␉␉␉MKEXT2_HDR_CAST(package)->plist_compressed_size = MKEXT_SWAP(zstream.total_out);␊ |
| 341 | ␉␉␉␉␉*((int*)lengthtmp) -= MKEXT2_GET_PLIST_COMPSIZE(package);␊ |
| 342 | ␉␉␉␉␉*((int*)lengthtmp) += zstream.total_out;␊ |
| 343 | ␉␉␉␉}␊ |
| 344 | ␉␉␉␉␉␉␉␉␊ |
| 345 | ␉␉␉␉if (zstream_inited) deflateEnd(&zstream);␊ |
| 346 | ␉␉␉␉␊ |
| 347 | ␉␉␉␉␊ |
| 348 | ␉␉␉␉␊ |
| 349 | ␉␉␉␉// re alder32 the new mkext2 package␊ |
| 350 | ␉␉␉␉MKEXT_HDR_CAST(package)->adler32 = ␊ |
| 351 | ␉␉␉␉␉MKEXT_SWAP(Mkext_Alder32((unsigned char *)&package->version,␊ |
| 352 | ␉␉␉␉␉␉␉␉␉␉␉ MKEXT_GET_LENGTH(package) - 0x10));␊ |
| 353 | ␉␉␉␉ ␊ |
| 354 | ␉␉␉}␊ |
| 355 | ␉␉}␊ |
| 356 | ␉␉else␊ |
| 357 | ␉␉{␊ |
| 358 | ␉␉␉printf("ZLIB Error: %s\n", zstream.msg);␊ |
| 359 | ␉␉␉getc();␊ |
| 360 | ␉␉}␉␉␊ |
| 361 | ␊ |
| 362 | ␉}␉␊ |
| 363 | ␉␊ |
| 364 | }␊ |
| 365 | ␊ |
| 366 | // FIXME: only handles mkext2 entries␊ |
| 367 | bool patch_kext(TagPtr plist, char* plistbuffer, void* start)␊ |
| 368 | {␊ |
| 369 | ␉␊ |
| 370 | ␉char* bundleID = XMLCastString(XMLGetProperty(plist, kPropCFBundleIdentifier));␊ |
| 371 | ␉␉␉␊ |
| 372 | ␉if(XMLGetProperty(plist, kMKEXTExecutableKey) == NULL) ␊ |
| 373 | ␉{␉␊ |
| 374 | ␉␉printf("Kext is plist only, aka legacykext\n");␉␉␊ |
| 375 | ␉␉return false;␉// Kext is a plist only kext, don't patch␊ |
| 376 | ␉}␉␊ |
| 377 | ␉␊ |
| 378 | #if UNUSED␊ |
| 379 | ␉if(/*patch_gma_deviceid &&*/␊ |
| 380 | ␉ (␊ |
| 381 | ␉␉␉(strcmp(bundleID, "com.apple.driver.AppleIntelGMA950") == 0) ||␊ |
| 382 | ␉␉␉(strcmp(bundleID, "com.apple.driver.AppleIntelIntegratedFramebuffer") == 0)␊ |
| 383 | ␉␉ )␊ |
| 384 | ␉ )␊ |
| 385 | ␉{␊ |
| 386 | ␉␉/*if(strcmp(bundleID, "com.apple.driver.AppleIntelIntegratedFramebuffer") == 0 || patch_gma_deviceid == 0x27ae)␊ |
| 387 | ␉␉{␊ |
| 388 | ␉␉␉return patch_gma_kexts(plist, plistbuffer, start);␊ |
| 389 | ␉␉}␊ |
| 390 | ␉␉else␊ |
| 391 | ␉␉{␊ |
| 392 | ␉␉␉␊ |
| 393 | ␉␉}*/␊ |
| 394 | ␉␉printf("%s found \n", bundleID);␊ |
| 395 | ␉␉␊ |
| 396 | ␉}␊ |
| 397 | ␉else if(/*patch_bcm_deviceid &&*/ (strcmp(bundleID, "com.apple.driver.AirPortBrcm43xx") == 0))␊ |
| 398 | ␉{␉␉␊ |
| 399 | ␉␉␊ |
| 400 | ␉␉//return patch_bcm_kext(plist, plistbuffer, start);␊ |
| 401 | ␊ |
| 402 | ␉}␊ |
| 403 | ␉else if(/*patch_bcm_deviceid &&*/ (strcmp(bundleID, "com.apple.iokit.IOAHCIBlockStorage") == 0))␊ |
| 404 | ␉{␉␉␊ |
| 405 | ␉␉␊ |
| 406 | ␉}␊ |
| 407 | ␉else ␊ |
| 408 | #endif␊ |
| 409 | ␉if(/*patch_hda_codec && */strcmp(bundleID, "com.apple.driver.AppleHDA") == 0)␊ |
| 410 | ␉{␊ |
| 411 | ␉␉//it seems that applehda.kext is not in extensions.mkext␊ |
| 412 | ␉␉return patch_hda_kext(plist, plistbuffer, start);␊ |
| 413 | ␊ |
| 414 | ␉}␉␉␊ |
| 415 | ␉else if(/*patch_hda_codec &&*/strcmp(bundleID, "com.apple.driver.AppleHDAController") == 0)␊ |
| 416 | ␉{␊ |
| 417 | ␉␉␊ |
| 418 | ␉␉//return patch_hda_controller(plist, plistbuffer, start);␊ |
| 419 | ␊ |
| 420 | ␉}␊ |
| 421 | ␉␊ |
| 422 | ␉return false;␊ |
| 423 | }␊ |
| 424 | ␊ |
| 425 | #if UNUSED␊ |
| 426 | void KextPatcher_hook(void* arg1, void* arg2, void* arg3, void* arg4, void* arg5, void* arg6)␊ |
| 427 | {␊ |
| 428 | ␉pci_dt_t* current = arg1;␊ |
| 429 | ␉if(current)␊ |
| 430 | ␉{␊ |
| 431 | ␉␉switch(current->class_id)␊ |
| 432 | ␉␉{␊ |
| 433 | ␉␉␉case PCI_CLASS_MULTIMEDIA_AUDIO:␊ |
| 434 | ␉␉␉␉break;␊ |
| 435 | ␉␉␉␉␊ |
| 436 | ␉␉␉case PCI_CLASS_DISPLAY_VGA:␊ |
| 437 | ␉␉␉␉if(current->vendor_id == 0x8086 && ␊ |
| 438 | ␉␉␉␉ (␊ |
| 439 | ␉␉␉␉␉current->device_id == 0x27AE ||␊ |
| 440 | ␉␉␉␉␉current->device_id == 0xA001 ||␊ |
| 441 | ␉␉␉␉␉current->device_id == 0xA002 ||␊ |
| 442 | ␉␉␉␉␉current->device_id == 0xA011 ||␊ |
| 443 | ␉␉␉␉␉current->device_id == 0xA012␊ |
| 444 | ␊ |
| 445 | ␉␉␉␉␉)␊ |
| 446 | ␉␉␉␉ )␊ |
| 447 | ␉␉␉␉{␊ |
| 448 | ␉␉␉␉␉patch_gma_deviceid = current->device_id;␊ |
| 449 | ␉␉␉␉}␊ |
| 450 | ␉␉␉␉break;␊ |
| 451 | ␉␉␉␉␊ |
| 452 | ␉␉␉case PCI_CLASS_NETWORK_OTHER:␊ |
| 453 | ␉␉␉␉␊ |
| 454 | ␉␉␉␉// Patch BCM43xx␊ |
| 455 | ␉␉␉␉if(current->vendor_id == 0x14E4 && ((current->device_id & 0xFF00) == 0x4300))␊ |
| 456 | ␉␉␉␉{␊ |
| 457 | ␉␉␉␉␉patch_bcm_deviceid = current->device_id;␊ |
| 458 | ␉␉␉␉}␊ |
| 459 | ␉␉␉␉break;␉␉␉␊ |
| 460 | ␉␉␉default:␊ |
| 461 | ␉␉␉␉break;␊ |
| 462 | ␉␉}␊ |
| 463 | ␉}␊ |
| 464 | }␊ |
| 465 | #endif␊ |
| 466 | ␊ |
| 467 | ␊ |
| 468 | bool patch_hda_controller(TagPtr plist, char* plistbuffer, void* start)␊ |
| 469 | {␊ |
| 470 | ␉return false;␊ |
| 471 | ␉// change the PCI class code to match to. Note: A LegacyHDA plist should do this on it's own␊ |
| 472 | ␉// As such, it's disabled␊ |
| 473 | ␊ |
| 474 | ␉// TODO: read class code␊ |
| 475 | ␉TagPtr personality;␊ |
| 476 | ␉personality =␉␉XMLCastDict(XMLGetProperty(plist, kPropIOKitPersonalities));␊ |
| 477 | ␉personality =␉␉XMLGetProperty(personality, (const char*)"BuiltInHDA");␉␊ |
| 478 | ␉TagPtr match_class =XMLCastArray(XMLGetProperty(personality, (const char*)"IOPCIClassMatch"));␊ |
| 479 | ␉␊ |
| 480 | ␉␊ |
| 481 | ␉char* new_str = malloc(strlen("0xXXXX000&0xFFFE0000")+1);␊ |
| 482 | ␉sprintf(new_str, "0x04030000&0xFFFE0000"); // todo, pass in actual class id␊ |
| 483 | ␉␊ |
| 484 | ␉␊ |
| 485 | ␉char* orig_string = "0x04020000&0xFFFE0000"; //XMLCastString(match_class);␊ |
| 486 | ␉␊ |
| 487 | ␉DBG("Attemting to replace '%s' with '%s'\n", orig_string, new_str);␊ |
| 488 | ␉␊ |
| 489 | ␉// TODO: verify string doesn't exist first.␊ |
| 490 | ␉␊ |
| 491 | ␉replace_string(orig_string, new_str, plistbuffer + XMLCastStringOffset(match_class), 10240);␊ |
| 492 | ␉␊ |
| 493 | ␉return true;␊ |
| 494 | ␉␊ |
| 495 | }␊ |
| 496 | ␊ |
| 497 | bool patch_hda_kext(TagPtr plist, char* plistbuffer, void* start)␊ |
| 498 | {␉␊ |
| 499 | ␉␊ |
| 500 | ␉␊ |
| 501 | ␉int full_size, compressed_size, executable_offset;␊ |
| 502 | ␉void* compressed_data;␊ |
| 503 | ␉mkext2_file_entry* kext;␊ |
| 504 | ␉int zlib_result;␊ |
| 505 | ␉z_stream zstream;␊ |
| 506 | ␉bool zstream_inited = false;␊ |
| 507 | #if UNUSED␊ |
| 508 | ␉uint16_t find_codec = 0;␊ |
| 509 | ␉switch(0xFF00 & patch_hda_codec)␊ |
| 510 | ␉{␊ |
| 511 | ␉␉case 0x0200:␊ |
| 512 | ␉␉␉find_codec = 0x0262;␊ |
| 513 | ␉␉␉break;␊ |
| 514 | ␊ |
| 515 | ␉␉case 0x0800:␊ |
| 516 | ␉␉␉find_codec = 0x0885;␊ |
| 517 | ␉␉␉break;␊ |
| 518 | ␉␉␉␊ |
| 519 | ␉␉case 0x0600:␉// specificaly the 662␊ |
| 520 | ␉␉␉find_codec = 0x0885;␊ |
| 521 | ␉␉␉break;␊ |
| 522 | ␉}␊ |
| 523 | ␉␊ |
| 524 | ␉if(!find_codec) return false;␉// notify caller that we aren't patching the kext␊ |
| 525 | #endif␊ |
| 526 | ␉␉␊ |
| 527 | ␉executable_offset = XMLCastInteger(XMLGetProperty(plist, kMKEXTExecutableKey));␊ |
| 528 | ␉kext = (void*)((char*)start + executable_offset);␊ |
| 529 | ␊ |
| 530 | ␉full_size = MKEXT2_GET_ENTRY_FULLSIZE(kext);␊ |
| 531 | ␉compressed_size = MKEXT2_GET_ENTRY_COMPSIZE(kext);␊ |
| 532 | ␉compressed_data = MKEXT2_GET_ENTRY_DATA(kext);␉␊ |
| 533 | ␉executable_offset = XMLCastInteger(XMLGetProperty(plist, kMKEXTExecutableKey));␊ |
| 534 | ␉␊ |
| 535 | ␉␊ |
| 536 | ␉char* executable = malloc(full_size);␊ |
| 537 | ␉␊ |
| 538 | ␉bzero(&zstream, sizeof(zstream));␉␉␊ |
| 539 | ␉zstream.next_in = (UInt8*)compressed_data;␊ |
| 540 | ␉zstream.avail_in = compressed_size;␊ |
| 541 | ␉␊ |
| 542 | ␉zstream.next_out = (UInt8*)executable;␊ |
| 543 | ␉zstream.avail_out = full_size;␊ |
| 544 | ␉␊ |
| 545 | ␉zstream.zalloc = z_alloc;␊ |
| 546 | ␉zstream.zfree = z_free;␊ |
| 547 | ␉␊ |
| 548 | ␉zlib_result = inflateInit(&zstream);␊ |
| 549 | ␉if (Z_OK != zlib_result)␊ |
| 550 | ␉{␊ |
| 551 | ␉␉printf("ZLIB Inflate Error: %s\n", zstream.msg);␊ |
| 552 | ␉␉getc();␊ |
| 553 | ␉}␊ |
| 554 | ␉else ␊ |
| 555 | ␉{␊ |
| 556 | ␉␉zstream_inited = true;␊ |
| 557 | ␉}␊ |
| 558 | ␉␊ |
| 559 | ␉␊ |
| 560 | ␉zlib_result = inflate(&zstream, Z_FINISH);␊ |
| 561 | ␉␊ |
| 562 | ␉DBG("Inflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊ |
| 563 | ␉␉␊ |
| 564 | #if UNUSED␊ |
| 565 | ␉replace_word(0x10EC | (find_codec << 16), 0x10EC | (patch_hda_codec << 16), executable, zstream.total_out);␊ |
| 566 | #else␊ |
| 567 | ␉if ((replace_word(0x10EC | (0x0885 << 16), 0x10EC | (0x0888 << 16), executable, zstream.total_out)) == 0)␊ |
| 568 | ␉{␊ |
| 569 | ␉␉if (zstream_inited) inflateEnd(&zstream);␊ |
| 570 | ␉␉free(executable);␊ |
| 571 | ␉␉return false;␊ |
| 572 | ␉}␊ |
| 573 | #endif␊ |
| 574 | ␉␊ |
| 575 | ␉if (zstream_inited) inflateEnd(&zstream);␊ |
| 576 | ␉␊ |
| 577 | ␉␊ |
| 578 | ␉zstream.next_in = (UInt8*)executable;␊ |
| 579 | ␉zstream.next_out = (UInt8*)compressed_data;␊ |
| 580 | ␉␊ |
| 581 | ␉zstream.avail_in = full_size;␊ |
| 582 | ␉zstream.avail_out = compressed_size;␊ |
| 583 | ␉zstream.zalloc = Z_NULL;␊ |
| 584 | ␉zstream.zfree = Z_NULL;␊ |
| 585 | ␉zstream.opaque = Z_NULL;␊ |
| 586 | ␉␊ |
| 587 | ␉␊ |
| 588 | ␉␊ |
| 589 | ␉// Recompress the eecutable␊ |
| 590 | ␉zlib_result = deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,15, 8 /* memLevel */, Z_DEFAULT_STRATEGY);␊ |
| 591 | ␉if (Z_OK != zlib_result) {␊ |
| 592 | ␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊ |
| 593 | ␉␉getc();␊ |
| 594 | ␉}␊ |
| 595 | ␉else ␊ |
| 596 | ␉{␊ |
| 597 | ␉␉zstream_inited = true;␊ |
| 598 | ␉}␊ |
| 599 | ␉␊ |
| 600 | ␉zlib_result = deflate(&zstream, Z_FINISH);␊ |
| 601 | ␉␊ |
| 602 | ␉if (zlib_result == Z_STREAM_END)␊ |
| 603 | ␉{␊ |
| 604 | ␉␉DBG("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊ |
| 605 | ␉␉getc();␊ |
| 606 | ␉} ␊ |
| 607 | ␉else if (zlib_result == Z_OK)␊ |
| 608 | ␉{␊ |
| 609 | ␉␉/* deflate filled output buffer, meaning the data doesn't compress.␊ |
| 610 | ␉␉ */␊ |
| 611 | ␉␉DBG("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊ |
| 612 | ␉␉getc();␊ |
| 613 | ␉} ␊ |
| 614 | ␉else if (zlib_result != Z_STREAM_ERROR)␊ |
| 615 | ␉{␊ |
| 616 | ␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊ |
| 617 | ␉␉getc();␊ |
| 618 | ␉}␊ |
| 619 | ␉␊ |
| 620 | ␉if (zstream_inited) deflateEnd(&zstream);␊ |
| 621 | ␉␊ |
| 622 | ␉free(executable);␊ |
| 623 | ␉␊ |
| 624 | ␉return true;␉␊ |
| 625 | ␊ |
| 626 | }␊ |
| 627 | #if UNUSED␊ |
| 628 | bool patch_bcm_kext(TagPtr plist, char* plistbuffer, void* start)␊ |
| 629 | {␊ |
| 630 | ␉TagPtr personality;␊ |
| 631 | ␉personality =␉␉XMLCastDict(XMLGetProperty(plist, kPropIOKitPersonalities));␊ |
| 632 | ␉personality =␉␉XMLGetProperty(personality, (const char*)"Broadcom 802.11 PCI");␉␊ |
| 633 | ␉TagPtr match_names =XMLCastArray(XMLGetProperty(personality, (const char*)"IONameMatch"));␊ |
| 634 | ␊ |
| 635 | ␉␊ |
| 636 | ␉char* new_str = malloc(strlen("pci14e4,xxxx")+1);␊ |
| 637 | ␉sprintf(new_str, "pci14e4,%02x", patch_bcm_deviceid);␊ |
| 638 | ␊ |
| 639 | ␉// Check to see if we *really* need to modify the plist, if not, return false␊ |
| 640 | ␉// so that *if* this were going ot be the only modified kext, the repacking code␊ |
| 641 | ␉// won't need to be executed.␊ |
| 642 | ␉int count = XMLTagCount(match_names);␊ |
| 643 | ␉while(count)␊ |
| 644 | ␉{␊ |
| 645 | ␉␉count--;␊ |
| 646 | ␉␉TagPtr replace =␉XMLGetElement(match_names, count);␉// Modify the second entry␊ |
| 647 | ␉␉char* orig_string = XMLCastString(replace);␊ |
| 648 | ␉␉if(strcmp(orig_string, new_str) == 0) return false;␊ |
| 649 | ␉}␊ |
| 650 | ␊ |
| 651 | ␉␊ |
| 652 | ␉TagPtr replace =␉XMLGetElement(match_names, 1);␉// Modify the second entry␊ |
| 653 | ␉char* orig_string = XMLCastString(replace);␊ |
| 654 | ␉␊ |
| 655 | ␉␊ |
| 656 | ␉// TODO: verify string doesn't exist first.␊ |
| 657 | ␉␊ |
| 658 | ␉replace_string(orig_string, new_str, plistbuffer + XMLCastStringOffset(replace), 10240);␊ |
| 659 | ␊ |
| 660 | ␉return true;␊ |
| 661 | }␊ |
| 662 | ␊ |
| 663 | bool patch_gma_kexts(TagPtr plist, char* plistbuffer, void* start)␊ |
| 664 | {␊ |
| 665 | ␉// TODO: clean up this function / split into two / etc␊ |
| 666 | ␉int exeutable_offset, full_size, compressed_size;␊ |
| 667 | ␉TagPtr personality;␊ |
| 668 | ␉long offset;␊ |
| 669 | ␉int zlib_result;␊ |
| 670 | ␉z_stream zstream;␊ |
| 671 | ␉bool zstream_inited = false;␊ |
| 672 | ␉mkext2_file_entry* kext;␊ |
| 673 | ␉void* compressed_data;␊ |
| 674 | ␊ |
| 675 | ␉exeutable_offset = XMLCastInteger(XMLGetProperty(plist, kMKEXTExecutableKey));␊ |
| 676 | ␉kext = (void*)((char*)start + exeutable_offset);␊ |
| 677 | ␊ |
| 678 | ␉full_size = MKEXT2_GET_ENTRY_FULLSIZE(kext);␊ |
| 679 | ␉compressed_size = MKEXT2_GET_ENTRY_COMPSIZE(kext);␊ |
| 680 | ␉compressed_data = MKEXT2_GET_ENTRY_DATA(kext);␊ |
| 681 | ␉␊ |
| 682 | ␉personality =␉␉XMLCastDict(XMLGetProperty(plist, kPropIOKitPersonalities));␊ |
| 683 | ␉␊ |
| 684 | ␉␊ |
| 685 | ␉␊ |
| 686 | ␉char* executable = malloc(full_size);␊ |
| 687 | ␉␊ |
| 688 | ␉bzero(&zstream, sizeof(zstream));␉␉␊ |
| 689 | ␉zstream.next_in = (UInt8*)compressed_data;␊ |
| 690 | ␉zstream.avail_in = compressed_size;␊ |
| 691 | ␉␊ |
| 692 | ␉zstream.next_out = (UInt8*)executable;␊ |
| 693 | ␉zstream.avail_out = full_size;␊ |
| 694 | ␉␊ |
| 695 | ␉zstream.zalloc = z_alloc;␊ |
| 696 | ␉zstream.zfree = z_free;␊ |
| 697 | ␉␊ |
| 698 | ␉zlib_result = inflateInit(&zstream);␊ |
| 699 | ␉if (Z_OK != zlib_result)␊ |
| 700 | ␉{␊ |
| 701 | ␉␉printf("ZLIB Inflate Error: %s\n", zstream.msg);␊ |
| 702 | ␉␉getc();␊ |
| 703 | ␉}␊ |
| 704 | ␉else ␊ |
| 705 | ␉{␊ |
| 706 | ␉␉zstream_inited = true;␊ |
| 707 | ␉}␊ |
| 708 | ␉␊ |
| 709 | ␉␊ |
| 710 | ␉zlib_result = inflate(&zstream, Z_FINISH);␊ |
| 711 | ␉␊ |
| 712 | ␉DBG("Inflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊ |
| 713 | ␉␊ |
| 714 | ␉␊ |
| 715 | ␉␊ |
| 716 | ␉if(XMLGetProperty(personality, (const char*)"Intel915"))␊ |
| 717 | ␉{␊ |
| 718 | ␉␉personality =␉␉XMLGetProperty(personality, (const char*)"Intel915");␊ |
| 719 | ␉␉// IOAccelerator kext␊ |
| 720 | ␉}␊ |
| 721 | ␉else␊ |
| 722 | ␉{␊ |
| 723 | ␉␉personality =␉␉XMLGetProperty(personality, (const char*)"AppleIntelIntegratedFramebuffer");␊ |
| 724 | ␉␉// Framebuffer Kext␊ |
| 725 | ␉␉␊ |
| 726 | ␉␉if((patch_gma_deviceid & 0xFF00) == 0xA000)␉// GMA3150␊ |
| 727 | ␉␉{␊ |
| 728 | ␉␉␉// Cursor corruption fix.␊ |
| 729 | ␉␉␉// This patch changes the cursor address from␊ |
| 730 | ␉␉␉// a physical address (used in the gma950) to an offset (used in the gma3150).␊ |
| 731 | ␉␉␉␊ |
| 732 | ␉␉␉char find_bytes[] = {0x8b, 0x55, 0x08, 0x83, 0xba, 0xb0, 0x00, 0x00, 0x00, 0x01, 0x7e, 0x36, 0x89, 0x04, 0x24, 0xe8, 0x32, 0xbb, 0xff, 0xff};␉// getPhysicalAddress() and more␊ |
| 733 | ␉␉␉char new_bytes[] = {0xb8, 0x00, 0x00, 0x00, 0x02, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0xEB, 0x04, 0x00, 0x00, 0x00, 0x00};␉// jump past getPhysicalAddress binding. NOTE: last six bytes are unusable␊ |
| 734 | ␉␉␉replace_bytes(find_bytes, sizeof(find_bytes), new_bytes, sizeof(new_bytes), executable, zstream.total_out);␊ |
| 735 | ␉␉}␊ |
| 736 | ␉␉␊ |
| 737 | ␉}␊ |
| 738 | ␉␊ |
| 739 | ␉␊ |
| 740 | #if DEBUG_KEXT_PATCHER␊ |
| 741 | ␉char* pcimatch =␉XMLCastString(XMLGetProperty(personality, (const char*)"IOPCIPrimaryMatch"));␊ |
| 742 | #endif␊ |
| 743 | ␉offset =␉␉XMLCastStringOffset(XMLGetProperty(personality, (const char*)"IOPCIPrimaryMatch"));␊ |
| 744 | ␉␊ |
| 745 | ␉char* newstring = malloc(strlen("0x00008086") + 1);␊ |
| 746 | ␉sprintf(newstring, "0x%04x", 0x8086 | (patch_gma_deviceid << 16));␊ |
| 747 | ␉␊ |
| 748 | ␉DBG("Replacing %s with %s\n", "0x00008086", newstring); ␊ |
| 749 | ␉replace_string("0x27A28086", newstring, plistbuffer + offset, 10240);␊ |
| 750 | ␉replace_word(0x27A28086, 0x8086 | (patch_gma_deviceid << 16), executable, zstream.total_out);␊ |
| 751 | ␊ |
| 752 | ␉␊ |
| 753 | ␉␊ |
| 754 | ␉if (zstream_inited) inflateEnd(&zstream);␊ |
| 755 | ␉␊ |
| 756 | ␉␊ |
| 757 | ␉zstream.next_in = (UInt8*)executable;␊ |
| 758 | ␉zstream.next_out = (UInt8*)compressed_data;␊ |
| 759 | ␉␊ |
| 760 | ␉zstream.avail_in = full_size;␊ |
| 761 | ␉zstream.avail_out = compressed_size;␊ |
| 762 | ␉zstream.zalloc = Z_NULL;␊ |
| 763 | ␉zstream.zfree = Z_NULL;␊ |
| 764 | ␉zstream.opaque = Z_NULL;␊ |
| 765 | ␉␊ |
| 766 | ␉␊ |
| 767 | ␉␊ |
| 768 | ␉// Recompress the eecutable␊ |
| 769 | ␉zlib_result = deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,15, 8 /* memLevel */, Z_DEFAULT_STRATEGY);␊ |
| 770 | ␉if (Z_OK != zlib_result) {␊ |
| 771 | ␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊ |
| 772 | ␉␉getc();␊ |
| 773 | ␉}␊ |
| 774 | ␉else ␊ |
| 775 | ␉{␊ |
| 776 | ␉␉zstream_inited = true;␊ |
| 777 | ␉}␊ |
| 778 | ␉␊ |
| 779 | ␉zlib_result = deflate(&zstream, Z_FINISH);␊ |
| 780 | ␉␊ |
| 781 | ␉if (zlib_result == Z_STREAM_END)␊ |
| 782 | ␉{␊ |
| 783 | ␉␉DBG("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊ |
| 784 | ␉} ␊ |
| 785 | ␉else if (zlib_result == Z_OK)␊ |
| 786 | ␉{␊ |
| 787 | ␉␉/* deflate filled output buffer, meaning the data doesn't compress.␊ |
| 788 | ␉␉ */␊ |
| 789 | ␉␉printf("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊ |
| 790 | ␉␉printf("ERROR: Unable to compress patched kext, not enough room.\n");␊ |
| 791 | ␉␉pause();␊ |
| 792 | ␉␉␊ |
| 793 | ␉} ␊ |
| 794 | ␉else if (zlib_result != Z_STREAM_ERROR)␊ |
| 795 | ␉{␊ |
| 796 | ␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊ |
| 797 | ␉␉getc();␊ |
| 798 | ␉}␊ |
| 799 | ␉//kext->compressed_size = MKEXT_SWAP(zstream.total_out);␊ |
| 800 | ␊ |
| 801 | ␉␊ |
| 802 | ␉␊ |
| 803 | ␉␊ |
| 804 | ␉if (zstream_inited) deflateEnd(&zstream);␊ |
| 805 | ␉␊ |
| 806 | ␉free(executable);␊ |
| 807 | ␉␊ |
| 808 | ␉return true;␉␊ |
| 809 | }␊ |
| 810 | #endif␊ |
| 811 | ␊ |
| 812 | int chartohex(char c)␊ |
| 813 | {␊ |
| 814 | ␉if(c <= '9' && c >= '0')␊ |
| 815 | ␉{␊ |
| 816 | ␉␉return c - '0';␉// c is between 0 and 9␊ |
| 817 | ␉}␊ |
| 818 | ␉else if(c <= 'F' && c >= 'A')␊ |
| 819 | ␉{␊ |
| 820 | ␉␉return c - 'A' + 10; // c = 10 - 15;␊ |
| 821 | ␉}␊ |
| 822 | ␉else if(c <= 'f' && c >= 'a')␊ |
| 823 | ␉{␊ |
| 824 | ␉␉return c - 'a' + 10; // c = 10 - 15;␊ |
| 825 | ␉}␊ |
| 826 | ␉return 0;␊ |
| 827 | } |
