Chameleon

Chameleon Svn Source Tree

Root/branches/meklort/i386/modules/KextPatcher/kext_patcher.c

Source at commit 647 created 13 years 4 months ago.
By meklort, Kext patcher update. Fixed bug with HDA patches, untested on 10.6.2 pre kexts. Fixed bug with gma 3150 kext, patch now works on all 10.6.x installs. I need to clean up the patcher / make an api still
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 0␊
28#endif␊
29␊
30#if DEBUG_KEXT_PATCHER␊
31#define DBG(x...)␉printf(x)␊
32#else␊
33#define DBG(x...)␊
34#endif␊
35␊
36␊
37bool patch_kext(TagPtr plist, char* plistbuffer, void* start);␊
38bool patch_gma_kexts(TagPtr plist, char* plistbuffer, void* start);␊
39bool patch_bcm_kext(TagPtr plist, char* plistbuffer, void* start);␊
40bool patch_hda_kext(TagPtr plist, char* plistbuffer, void* start);␊
41bool patch_hda_controller(TagPtr plist, char* plistbuffer, void* start);␊
42␊
43int chartohex(char c);␊
44␊
45static void * z_alloc(void *, u_int items, u_int size);␊
46static void z_free(void *, void *ptr);␊
47␊
48uint16_t patch_gma_deviceid = 0;␊
49uint16_t patch_bcm_deviceid = 0;␊
50␊
51// TODO: add detection code␊
52uint16_t patch_hda_codec = 0x00;␊
53␊
54#define NEEDS_PATCHING␉␉(patch_bcm_deviceid || patch_gma_deviceid || patch_hda_codec)␊
55␊
56typedef struct z_mem {␊
57 uint32_t alloc_size;␊
58 uint8_t data[0];␊
59} z_mem;␊
60␊
61/*␊
62 * Space allocation and freeing routines for use by zlib routines.␊
63 */␊
64void *␊
65z_alloc(void * notused __unused, u_int num_items, u_int size)␊
66{␊
67 void * result = NULL;␊
68 z_mem * zmem = NULL;␊
69 uint32_t total = num_items * size;␊
70 uint32_t allocSize = total + sizeof(zmem);␊
71 ␊
72 zmem = (z_mem *)malloc(allocSize);␊
73 if (!zmem) {␊
74 goto finish;␊
75 }␊
76 zmem->alloc_size = allocSize;␊
77 result = (void *)&(zmem->data);␊
78finish:␊
79 return result;␊
80}␊
81␊
82void␊
83z_free(void * notused __unused, void * ptr)␊
84{␊
85 uint32_t * skipper = (uint32_t *)ptr - 1;␊
86 z_mem * zmem = (z_mem *)skipper;␊
87 free((void *)zmem);␊
88 return;␊
89}␊
90␊
91␊
92unsigned long Mkext_Alder32( unsigned char * buffer, long length );␊
93␊
94void KextPatcher_hook(void* current, void* arg2, void* arg3, void* arg4);␊
95␊
96/**␊
97 ** KextPatcher_start -> module start␊
98 **␉␉Notified the module system that this module will hook into the ␊
99 **␉␉LoadMatchedModules and LoadDriverMKext functions␊
100 **/␊
101void KextPatcher_start()␊
102{␉␉␊
103␉// Hooks into the following:␊
104␉//␉execute_hook("LoadDriverMKext", (void*)package, (void*) length, NULL, NULL);␊
105␉// execute_hook("LoadMatchedModules", module, &length, executableAddr, NULL);␊
106␊
107␉register_hook_callback("PCIDevice", &KextPatcher_hook);␊
108␉//register_hook_callback("LoadMatchedModules", &kext_loaded); ␊
109␉register_hook_callback("LoadDriverMKext", &mkext_loaded); ␊
110␊
111}␊
112␊
113/**␊
114 ** kext_loaded -> Called whenever a kext is in read into memory␊
115 **␉␉This function will be used to patch kexts ( eg AppleInteIntegratedFramebuffer)␊
116 **␉␉and their plists when they are loaded into memmory␊
117 **/␊
118void kext_loaded(void* moduletmp, void* lengthprt, void* executableAddr, void* arg3)␊
119{␊
120␉␊
121␉//ModulePtr module = moduletmp;␊
122␉//long length = *(long*)lengthprt;␊
123␉//long length2 = strlen(module->plistAddr);␊
124␉// *(long*)lengthprt = length2 + 5 * 1024 * 1024;␊
125␊
126␉//printf("Loading %s, lenght is %d, executable is 0x%X\n", module->plistAddr, length, executableAddr);␊
127␉//getc();␊
128}␊
129␊
130/**␊
131 ** mkext_loaded -> Called whenever an mkext is in read into memory␊
132 **␉␉This function will be used to patch mkext. Matching kexts will be␊
133 **␉␉Extracted, modified, and then compressed again. Note: I need to determine␊
134 **␉␉what sort of slowdown this will cause and if it's worth implimenting.␊
135 **/␊
136␊
137void mkext_loaded(void* filespec, void* packagetmp, void* lengthtmp, void* arg3)␊
138{␊
139␉const char* hda_codec;␊
140␉int len = 0;␊
141␉if (getValueForKey(kHDACodec, &hda_codec, &len, &bootInfo->bootConfig))␊
142␉{␊
143␉␉patch_hda_codec = 0;␊
144␉␉int index = 0;␊
145␉␉while(len--)␊
146␉␉{␊
147␉␉␉patch_hda_codec <<= 4;␊
148␉␉␉patch_hda_codec |= chartohex(hda_codec[index]);␊
149␉␉␉index++;␊
150␉␉}␊
151␉}␊
152␉␉␊
153␉if(!NEEDS_PATCHING) return;␉// No need to apply a patch, hardware doesn't need it␊
154␉␊
155␉int version = 0;␊
156␉//int length = *((int*)lengthtmp);␊
157␉mkext_basic_header* package = packagetmp;␊
158␊
159␉// Verify the MKext.␊
160 if (( MKEXT_GET_MAGIC(package)␉␉!= MKEXT_MAGIC ) ||␊
161 ( MKEXT_GET_SIGNATURE(package)␉!= MKEXT_SIGN ) ||␊
162 ( MKEXT_GET_LENGTH(package)␉␉> kLoadSize )␉ ||␊
163 ( MKEXT_GET_CHECKSUM(package) !=␊
164␉␉ Mkext_Alder32((unsigned char *)&package->version, MKEXT_GET_LENGTH(package) - 0x10) ) )␊
165 {␊
166 return;␊
167␉␉// Don't try to patch a b␊
168 }␉␊
169␉␊
170␉/*␊
171␉if(strcmp(filespec, "/System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext") == 0)␊
172␉{␊
173␉␉printf("Invalidating mkext %s\n", filespec);␊
174␉␉// 10.6 cache folder. Doesn't contain certain extensions we need, so invalidate it.␊
175␉␉//package->adler32++;␊
176␉␉// NOTE: double check that this is needed␊
177␉␉package->magic = 0x00;␊
178␉␉return;␊
179␉}*/␊
180␉␊
181␉␊
182␉version = MKEXT_GET_VERSION(package);␊
183␉␊
184␉if(version == 0x01008000) // mkext1␊
185␉{␊
186␉␉// mkext1 uses lzss␊
187␉␉mkext1_header* package = packagetmp;␊
188␉␉int i;␊
189␉␉for(i = 0; i < MKEXT_GET_COUNT(package); i++)␊
190␉␉{␊
191␉␉␉DBG("Parsing kext %d\n", i);␊
192␉␉␉//mkext_kext* kext = MKEXT1_GET_KEXT(package, i);␊
193␉␉␉// uses decompress_lzss␊
194␉␉␉// TODO: handle kext␊
195␊
196␉␉}␊
197␉}␊
198␉else if((version & 0xFFFF0000) == 0x02000000) // mkext2␊
199␉{␊
200␉␉DBG("Mkext2 package located at 0x%X\n", package);␊
201␊
202␉␉// mkext2 uses zlib␉␉␊
203␉␉mkext2_header* package = packagetmp;␊
204␉␉z_stream zstream;␊
205␉␉bool zstream_inited = false;␊
206␉␉int zlib_result;␊
207␉␉int plist_offset = MKEXT2_GET_PLIST(package);␊
208␉␉␊
209␉␉char* plist = malloc(MKEXT2_GET_PLIST_FULLSIZE(package));␊
210␉␉␊
211␉␉bzero(&zstream, sizeof(zstream));␉␉␊
212␉␉zstream.next_in = (UInt8*)((char*)package + plist_offset);␊
213␉␉zstream.avail_in = MKEXT2_GET_PLIST_COMPSIZE(package);␊
214␉␉␊
215␉␉zstream.next_out = (UInt8*)plist;␊
216␉␉zstream.avail_out = MKEXT2_GET_PLIST_FULLSIZE(package);␊
217␉␉␊
218␉␉zstream.zalloc = z_alloc;␊
219␉␉zstream.zfree = z_free;␊
220␉␉␉␉␊
221␉␉zlib_result = inflateInit(&zstream);␊
222␉␉if (Z_OK != zlib_result)␊
223␉␉{␊
224␉␉␉printf("ZLIB Error: %s\n", zstream.msg);␊
225␉␉␉getc();␊
226␉␉}␊
227␉␉else ␊
228␉␉{␊
229␉␉␉zstream_inited = true;␊
230␉␉}␊
231␊
232␉␉␊
233␉␉zlib_result = inflate(&zstream, Z_FINISH);␊
234␉␉if (zstream_inited) inflateEnd(&zstream);␊
235␊
236␉␉DBG("Inflated result is %d, in: %d bytes, out: %d bytes\n", zlib_result, zstream.total_in, zstream.total_out);␊
237␉␉if (zlib_result == Z_STREAM_END || zlib_result == Z_OK)␊
238␉␉{␉␉␉␊
239␉␉␉config_file_t plistData;␊
240␉␉␉config_file_t allDicts;␊
241␉␉␉bzero(&plistData, sizeof(plistData));␊
242␉␉␉bzero(&allDicts, sizeof(allDicts));␊
243␉␉␉␊
244␉␉␉XMLParseFile( plist, &plistData.dictionary );␊
245␊
246␉␉␉int count = 0;␊
247␊
248␉␉␉allDicts.dictionary = XMLGetProperty(plistData.dictionary, kMKEXTInfoDictionariesKey);␊
249␉␉␉count = XMLTagCount(allDicts.dictionary);␊
250␊
251␉␉␉DBG("Plist contains %d kexts\n", count);␊
252␉␉␉␊
253␉␉␉␊
254␉␉␉bool patched = false;␊
255␉␉␉for(; count--; count > 0)␊
256␉␉␉{␊
257␉␉␉␉TagPtr kextEntry = XMLGetElement(allDicts.dictionary, count);␊
258␉␉␉␉patched |= patch_kext(kextEntry, plist, package);␊
259␉␉␉}␊
260␉␉␉␊
261␊
262␉␉␉if(patched)␊
263␉␉␉{␊
264␉␉␉␉zstream_inited = false;␊
265␉␉␉␉// Recompress the plist␊
266␉␉␉␉bzero(&zstream, sizeof(zstream));␉␉␊
267␉␉␉␉zstream.next_in = (UInt8*)plist;␊
268␉␉␉␉zstream.next_out = (UInt8*)package + plist_offset;␊
269␉␉␉␉zstream.avail_in = MKEXT2_GET_PLIST_FULLSIZE(package);␊
270␉␉␉␉zstream.avail_out = MKEXT2_GET_PLIST_FULLSIZE(package)<<2;␉// Give us some extra free space, just in case␊
271␉␉␉␉zstream.zalloc = Z_NULL;␊
272␉␉␉␉zstream.zfree = Z_NULL;␊
273␉␉␉␉zstream.opaque = Z_NULL;␊
274␉␉␉␉␊
275␉␉␉␉␊
276␉␉␉␉zlib_result = deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,15, 8 /* memLevel */, Z_DEFAULT_STRATEGY);␊
277␉␉␉␉if (Z_OK != zlib_result) {␊
278␉␉␉␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊
279␉␉␉␉␉getc();␊
280␉␉␉␉}␊
281␉␉␉␉else ␊
282␉␉␉␉{␊
283␉␉␉␉␉zstream_inited = true;␊
284␉␉␉␉}␊
285␉␉␉␉␊
286␉␉␉␉zlib_result = deflate(&zstream, Z_FINISH);␊
287␉␉␉␉␊
288␉␉␉␉if (zlib_result == Z_STREAM_END)␊
289␉␉␉␉{␊
290␉␉␉␉␉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));␊
291␉␉␉␉} ␊
292␉␉␉␉else if (zlib_result == Z_OK)␊
293␉␉␉␉{␊
294␉␉␉␉␉/* deflate filled output buffer, meaning the data doesn't compress.␊
295␉␉␉␉␉ */␊
296␉␉␉␉␉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));␊
297␉␉␉␉␉␊
298␉␉␉␉} ␊
299␉␉␉␉else if (zlib_result != Z_STREAM_ERROR)␊
300␉␉␉␉{␊
301␉␉␉␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊
302␉␉␉␉␉getc();␊
303␉␉␉␉}␊
304␉␉␉␉␊
305␉␉␉␉if(zstream.total_out != MKEXT2_GET_PLIST_COMPSIZE(package))␊
306␉␉␉␉{␊
307␉␉␉␉␉// Update the mkext length␊
308␉␉␉␉␉MKEXT2_HDR_CAST(package)->length = MKEXT_SWAP(MKEXT_GET_LENGTH(package) - MKEXT2_GET_PLIST_COMPSIZE(package) + zstream.total_out);␊
309␉␉␉␉␉MKEXT2_HDR_CAST(package)->plist_compressed_size = MKEXT_SWAP(zstream.total_out);␊
310␉␉␉␉␉*((int*)lengthtmp) -= MKEXT2_GET_PLIST_COMPSIZE(package);␊
311␉␉␉␉␉*((int*)lengthtmp) += zstream.total_out;␊
312␉␉␉␉}␊
313␉␉␉␉␉␉␉␉␊
314␉␉␉␉if (zstream_inited) deflateEnd(&zstream);␊
315␉␉␉␉␊
316␉␉␉␉␊
317␉␉␉␉␊
318␉␉␉␉// re alder32 the new mkext2 package␊
319␉␉␉␉MKEXT_HDR_CAST(package)->adler32 = ␊
320␉␉␉␉␉MKEXT_SWAP(Mkext_Alder32((unsigned char *)&package->version,␊
321␉␉␉␉␉␉␉␉␉␉␉ MKEXT_GET_LENGTH(package) - 0x10));␊
322␉␉␉}␊
323␉␉}␊
324␉␉else␊
325␉␉{␊
326␉␉␉printf("ZLIB Error: %s\n", zstream.msg);␊
327␉␉␉getc();␊
328␉␉}␊
329␊
330␉␉//config_file_t mkextPlist;␊
331␉␉//ParseXMLFile((char*) plist, &mkextPlist.dictionary);␊
332␉␉␊
333␉␉␊
334␉␉␊
335␉␉␊
336␉␉␊
337␉␉/*␉␉int i;␊
338␉␉for(i = 0; i < MKEXT_GET_COUNT(package); i++)␊
339␉␉{␊
340␉␉␉printf("Parsing kext %d\n", i);␊
341␉␉}␊
342␉␉*/␊
343␉␉␊
344␊
345␉}␊
346␊
347␉␊
348␉DBG("Loading %s, version 0x%x\n", filespec, version);␊
349␉//getc();␊
350}␊
351␊
352// FIXME: only handles mkext2 entries␊
353bool patch_kext(TagPtr plist, char* plistbuffer, void* start)␊
354{␊
355␉char* bundleID;␊
356␉␊
357␉if(XMLGetProperty(plist, kMKEXTExecutableKey) == NULL) return false;␉// Kext is a plist only kext, don't patch␊
358␉␊
359␉bundleID = XMLCastString(XMLGetProperty(plist, kPropCFBundleIdentifier));␊
360␉␊
361␉␊
362␉if(patch_gma_deviceid &&␊
363␉ (␊
364␉␉␉(strcmp(bundleID, "com.apple.driver.AppleIntelGMA950") == 0) ||␊
365␉␉␉(strcmp(bundleID, "com.apple.driver.AppleIntelIntegratedFramebuffer") == 0)␊
366␉␉ )␊
367␉ )␊
368␉{␊
369␉␉if(strcmp(bundleID, "com.apple.driver.AppleIntelIntegratedFramebuffer") == 0 || patch_gma_deviceid == 0x27ae)␊
370␉␉{␊
371␉␉␉return patch_gma_kexts(plist, plistbuffer, start);␊
372␉␉}␊
373␉␉else␊
374␉␉{␊
375␉␉␉//return patch_gma_kexts(plist, plistbuffer, start);␊
376␉␉}␊
377␊
378␉}␊
379␉else if(patch_bcm_deviceid && (strcmp(bundleID, "com.apple.driver.AirPortBrcm43xx") == 0))␊
380␉{␊
381␉␉return patch_bcm_kext(plist, plistbuffer, start);␊
382␊
383␉}␊
384␉else if(patch_hda_codec && strcmp(bundleID, "com.apple.driver.AppleHDA") == 0)␊
385␉{␊
386␉␉return patch_hda_kext(plist, plistbuffer, start);␊
387␊
388␉}␊
389␉␊
390␉else if(patch_hda_codec && strcmp(bundleID, "com.apple.driver.AppleHDAController") == 0)␊
391␉{␊
392␉␉return patch_hda_controller(plist, plistbuffer, start);␊
393␊
394␉}␊
395␉␊
396␉return false;␊
397}␊
398␊
399void KextPatcher_hook(void* arg1, void* arg2, void* arg3, void* arg4)␊
400{␊
401␉pci_dt_t* current = arg1;␊
402␉if(current)␊
403␉{␊
404␉␉switch(current->class_id)␊
405␉␉{␊
406␉␉␉case PCI_CLASS_DISPLAY_VGA:␊
407␉␉␉␉if(current->vendor_id == 0x8086 && ␊
408␉␉␉␉ (␊
409␉␉␉␉␉current->device_id == 0x27AE ||␊
410␉␉␉␉␉current->device_id == 0xA001 ||␊
411␉␉␉␉␉current->device_id == 0xA002 ||␊
412␉␉␉␉␉current->device_id == 0xA011 ||␊
413␉␉␉␉␉current->device_id == 0xA012␊
414␊
415␉␉␉␉␉)␊
416␉␉␉␉ )␊
417␉␉␉␉{␊
418␉␉␉␉␉patch_gma_deviceid = current->device_id;␊
419␉␉␉␉}␊
420␉␉␉␉break;␊
421␉␉␉␉␊
422␉␉␉case PCI_CLASS_NETWORK_OTHER:␊
423␉␉␉␉␊
424␉␉␉␉// Patch BCM43xx␊
425␉␉␉␉if(current->vendor_id == 0x14E4 && ((current->device_id & 0xFF00) == 0x4300))␊
426␉␉␉␉{␊
427␉␉␉␉␉patch_bcm_deviceid = current->device_id;␊
428␉␉␉␉}␊
429␉␉␉␉break;␊
430␉␉}␊
431␉}␊
432}␊
433␊
434␊
435bool patch_hda_controller(TagPtr plist, char* plistbuffer, void* start)␊
436{␊
437␉return false;␊
438␉// change the PCI class code to match to. Note: A LegacyHDA plist should do this on it's own␊
439␉// As such, it's disabled␊
440␊
441␉// TODO: read class code␊
442␉TagPtr personality;␊
443␉personality =␉␉XMLCastDict(XMLGetProperty(plist, kPropIOKitPersonalities));␊
444␉personality =␉␉XMLGetProperty(personality, (const char*)"BuiltInHDA");␉␊
445␉TagPtr match_class =XMLCastArray(XMLGetProperty(personality, (const char*)"IOPCIClassMatch"));␊
446␉␊
447␉␊
448␉char* new_str = malloc(strlen("0xXXXX000&0xFFFE0000")+1);␊
449␉sprintf(new_str, "0x04030000&amp;0xFFFE0000"); // todo, pass in actual class id␊
450␉␊
451␉␊
452␉char* orig_string = "0x04020000&amp;0xFFFE0000"; //XMLCastString(match_class);␊
453␉␊
454␉printf("Attemting to replace '%s' with '%s'\n", orig_string, new_str);␊
455␉␊
456␉// TODO: verify string doesn't exist first.␊
457␉␊
458␉replace_string(orig_string, new_str, plistbuffer + XMLCastStringOffset(match_class), 1024);␊
459␉␊
460␉return true;␊
461␉␊
462}␊
463␊
464␊
465bool patch_hda_kext(TagPtr plist, char* plistbuffer, void* start)␊
466{␊
467␉uint16_t find_codec = 0;␊
468␉int full_size, compressed_size, executable_offset;␊
469␉void* compressed_data;␊
470␉mkext2_file_entry* kext;␊
471␉int zlib_result;␊
472␉z_stream zstream;␊
473␉bool zstream_inited = false;␊
474␊
475␉switch(patch_hda_codec & 0xFF00)␊
476␉{␊
477␉␉case 0x0200:␊
478␉␉␉find_codec = 0x0262;␊
479␉␉␉break;␊
480␊
481␉␉case 0x0800:␊
482␉␉␉find_codec = 0x0885;␊
483␉␉␉break;␊
484␉␉␉␊
485␉␉case 0x0600:␉// specificaly the 662␊
486␉␉␉find_codec = 0x0885;␊
487␉␉␉break;␊
488␉}␊
489␉if(!find_codec) return false;␉// notify caller that we aren't patching the kext␊
490␉␉␊
491␉executable_offset = XMLCastInteger(XMLGetProperty(plist, kMKEXTExecutableKey));␊
492␉kext = (void*)((char*)start + executable_offset);␊
493␊
494␉full_size = MKEXT2_GET_ENTRY_FULLSIZE(kext);␊
495␉compressed_size = MKEXT2_GET_ENTRY_COMPSIZE(kext);␊
496␉compressed_data = MKEXT2_GET_ENTRY_DATA(kext);␉␊
497␉executable_offset = XMLCastInteger(XMLGetProperty(plist, kMKEXTExecutableKey));␊
498␉␊
499␉␊
500␉char* executable = malloc(full_size);␊
501␉␊
502␉bzero(&zstream, sizeof(zstream));␉␉␊
503␉zstream.next_in = (UInt8*)compressed_data;␊
504␉zstream.avail_in = compressed_size;␊
505␉␊
506␉zstream.next_out = (UInt8*)executable;␊
507␉zstream.avail_out = full_size;␊
508␉␊
509␉zstream.zalloc = z_alloc;␊
510␉zstream.zfree = z_free;␊
511␉␊
512␉zlib_result = inflateInit(&zstream);␊
513␉if (Z_OK != zlib_result)␊
514␉{␊
515␉␉printf("ZLIB Inflate Error: %s\n", zstream.msg);␊
516␉␉getc();␊
517␉}␊
518␉else ␊
519␉{␊
520␉␉zstream_inited = true;␊
521␉}␊
522␉␊
523␉␊
524␉zlib_result = inflate(&zstream, Z_FINISH);␊
525␉␊
526␉DBG("Inflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊
527␉␉␊
528␉int times = replace_word(0x10EC0000 | (find_codec), 0x10EC0000 | (patch_hda_codec), executable, zstream.total_out);␊
529␉if (zstream_inited) inflateEnd(&zstream);␊
530␉␊
531␉␊
532␉zstream.next_in = (UInt8*)executable;␊
533␉zstream.next_out = (UInt8*)compressed_data;␊
534␉␊
535␉zstream.avail_in = full_size;␊
536␉zstream.avail_out = compressed_size<<1;␊
537␉zstream.zalloc = Z_NULL;␊
538␉zstream.zfree = Z_NULL;␊
539␉zstream.opaque = Z_NULL;␊
540␉␊
541␉␊
542␉␊
543␉// Recompress the eecutable␊
544␉zlib_result = deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,15, 8 /* memLevel */, Z_DEFAULT_STRATEGY);␊
545␉if (Z_OK != zlib_result) {␊
546␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊
547␉␉getc();␊
548␉}␊
549␉else ␊
550␉{␊
551␉␉zstream_inited = true;␊
552␉}␊
553␉␊
554␉zlib_result = deflate(&zstream, Z_FINISH);␊
555␉␊
556␉if (zlib_result == Z_STREAM_END)␊
557␉{␊
558␉␉DBG("Deflated result is %d, avail: %d bytes, out: %d bytes, full: %d\n", zlib_result, compressed_size, zstream.total_out, full_size);␊
559␉} ␊
560␉else if (zlib_result == Z_OK)␊
561␉{␊
562␉␉/* deflate filled output buffer, meaning the data doesn't compress.␊
563␉␉ */␊
564␉␉DBG("Buffer FULL: deflated result is %d, avail: %d bytes, out: %d bytes, full: %d\n", zlib_result, compressed_size, zstream.total_out, full_size);␊
565␉␉printf("Unable to patch AppleHDA\n"␊
566␉␉␊
567␉} ␊
568␉else if (zlib_result != Z_STREAM_ERROR)␊
569␉{␊
570␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊
571␉␉getc();␊
572␉}␊
573␉␊
574␉if (zstream_inited) deflateEnd(&zstream);␊
575␉␊
576␉if(zstream.total_out < compressed_size) kext->compressed_size = MKEXT_SWAP(zstream.total_out);␊
577␊
578␉␊
579␉free(executable);␊
580␉␊
581␉return true;␉␊
582␊
583}␊
584␊
585bool patch_bcm_kext(TagPtr plist, char* plistbuffer, void* start)␊
586{␊
587␉TagPtr personality;␊
588␉personality =␉␉XMLCastDict(XMLGetProperty(plist, kPropIOKitPersonalities));␊
589␉personality =␉␉XMLGetProperty(personality, (const char*)"Broadcom 802.11 PCI");␉␊
590␉TagPtr match_names =XMLCastArray(XMLGetProperty(personality, (const char*)"IONameMatch"));␊
591␊
592␉␊
593␉char* new_str = malloc(strlen("pci14e4,xxxx")+1);␊
594␉sprintf(new_str, "pci14e4,%02x", patch_bcm_deviceid);␊
595␊
596␉// Check to see if we *really* need to modify the plist, if not, return false␊
597␉// so that *if* this were going ot be the only modified kext, the repacking code␊
598␉// won't need to be executed.␊
599␉int count = XMLTagCount(match_names);␊
600␉while(count)␊
601␉{␊
602␉␉count--;␊
603␉␉TagPtr replace =␉XMLGetElement(match_names, count);␉// Modify the second entry␊
604␉␉char* orig_string = XMLCastString(replace);␊
605␉␉if(strcmp(orig_string, new_str) == 0) return false;␊
606␉}␊
607␊
608␉␊
609␉TagPtr replace =␉XMLGetElement(match_names, 1);␉// Modify the second entry␊
610␉char* orig_string = XMLCastString(replace);␊
611␉␊
612␉␊
613␉// TODO: verify string doesn't exist first.␊
614␉␊
615␉replace_string(orig_string, new_str, plistbuffer + XMLCastStringOffset(replace), 10240);␊
616␊
617␉return true;␊
618}␊
619␊
620bool patch_gma_kexts(TagPtr plist, char* plistbuffer, void* start)␊
621{␊
622␉// TODO: clean up this function / split into two / etc␊
623␉int exeutable_offset, full_size, compressed_size;␊
624␉TagPtr personality;␊
625␉long offset;␊
626␉int zlib_result;␊
627␉z_stream zstream;␊
628␉bool zstream_inited = false;␊
629␉mkext2_file_entry* kext;␊
630␉void* compressed_data;␊
631␊
632␉exeutable_offset = XMLCastInteger(XMLGetProperty(plist, kMKEXTExecutableKey));␊
633␉kext = (void*)((char*)start + exeutable_offset);␊
634␊
635␉full_size = MKEXT2_GET_ENTRY_FULLSIZE(kext);␊
636␉compressed_size = MKEXT2_GET_ENTRY_COMPSIZE(kext);␊
637␉compressed_data = MKEXT2_GET_ENTRY_DATA(kext);␊
638␉␊
639␉personality =␉␉XMLCastDict(XMLGetProperty(plist, kPropIOKitPersonalities));␊
640␉␊
641␉␊
642␉␊
643␉char* executable = malloc(full_size);␊
644␉␊
645␉bzero(&zstream, sizeof(zstream));␉␉␊
646␉zstream.next_in = (UInt8*)compressed_data;␊
647␉zstream.avail_in = compressed_size;␊
648␉␊
649␉zstream.next_out = (UInt8*)executable;␊
650␉zstream.avail_out = full_size;␊
651␉␊
652␉zstream.zalloc = z_alloc;␊
653␉zstream.zfree = z_free;␊
654␉␊
655␉zlib_result = inflateInit(&zstream);␊
656␉if (Z_OK != zlib_result)␊
657␉{␊
658␉␉printf("ZLIB Inflate Error: %s\n", zstream.msg);␊
659␉␉getc();␊
660␉}␊
661␉else ␊
662␉{␊
663␉␉zstream_inited = true;␊
664␉}␊
665␉␊
666␉␊
667␉zlib_result = inflate(&zstream, Z_FINISH);␊
668␉␊
669␉DBG("Inflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊
670␉␊
671␉char* newstring = malloc(strlen("0x00008086") + 1);␊
672␉sprintf(newstring, "0x%04x", 0x8086 | (patch_gma_deviceid << 16));␊
673␊
674␉␊
675␉if(XMLGetProperty(personality, (const char*)"Intel915"))␊
676␉{␊
677␉␉verbose("Patching AppleIntelGMA960.kext\n");␊
678␉␉//getc();␊
679␊
680␉␉personality =␉␉XMLGetProperty(personality, (const char*)"Intel915");␊
681␉␉// IOAccelerator kext␊
682␉␉␊
683␉␉offset =␉␉XMLCastStringOffset(XMLGetProperty(personality, (const char*)"IOPCIPrimaryMatch"));␉␉␊
684␉␉replace_string("0x27A28086", newstring, plistbuffer + offset, 10240);␊
685␉␉replace_word(0x27A28086, 0x8086 | (patch_gma_deviceid << 16), executable, zstream.total_out);␊
686␊
687␉}␊
688␉else if(XMLGetProperty(personality, (const char*)"AppleIntelIntegratedFramebuffer"))␊
689␉{␊
690␉␉verbose("Patching AppleIntelIntegratedFramebuffer\n");␊
691␉␉//getc();␊
692␊
693␉␉personality =␉␉XMLGetProperty(personality, (const char*)"AppleIntelIntegratedFramebuffer");␊
694␉␉// Framebuffer Kext␊
695␉␉␊
696␉␉if((patch_gma_deviceid & 0xFF00) == 0xA000)␉// GMA3150␊
697␉␉{␊
698␉␉␉// Cursor corruption fix.␊
699␉␉␉// This patch changes the cursor address from␊
700␉␉␉// a physical address (used in the gma950) to an offset (used in the gma3150).␊
701␉␉␉//s␉␉␉␉␉{0x8b, 0x55, 0x08, 0x83, 0xba, 0xb0, 0x00, 0x00, 0x00, 0x01, 0x7e, 0x36, 0x89, 0x04, 0x24, 0xe8, 0x6b, 0xbc, 0xff, 0xff};␊
702␉␉␉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␊
703␉␉␉char new_bytes[] = {0xb8, 0x00, 0x00, 0x00, 0x02, 0xEB, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};␉// jump past getPhysicalAddress binding. NOTE: last six bytes are unusable␊
704␉␉␉replace_bytes(find_bytes, sizeof(find_bytes), new_bytes, sizeof(new_bytes), executable, zstream.total_out);␊
705␉␉␉␊
706␊
707␉␉}␊
708␉␉offset =␉␉XMLCastStringOffset(XMLGetProperty(personality, (const char*)"IOPCIPrimaryMatch"));␉␉␊
709␉␉replace_string("0x27A28086", newstring, plistbuffer + offset, 10240);␊
710␉␉replace_word(0x27A28086, 0x8086 | (patch_gma_deviceid << 16), executable, zstream.total_out);␊
711␉␉␊
712␉}␊
713␉else if(XMLGetProperty(personality, (const char*)"Intel965"))␊
714␉{␊
715␉␉verbose("Patching AppleIntelGMAX3100.kext\n");␊
716␊
717␉␉personality =␉␉XMLGetProperty(personality, (const char*)"Intel965");␊
718␉␉␊
719␉␉offset =␉␉XMLCastStringOffset(XMLGetProperty(personality, (const char*)"IOPCIPrimaryMatch"));␉␉␊
720␉␉␊
721␉␉//printf("Intel965\n");␊
722␉␉//printf("Replacing %c%c%c%c\n", (plistbuffer + offset)[0], (plistbuffer + offset)[1], (plistbuffer + offset)[2], (plistbuffer + offset)[3]);␊
723␉␉//getc();␊
724␊
725␉␉␊
726␉␉//return true;␊
727␊
728␉␉replace_string("0x2a028086", newstring, plistbuffer + offset, 10240);␊
729␉␉//replace_word(0x2A028086, 0x8086 | (patch_gma_deviceid << 16), executable, zstream.total_out);␊
730␉}␊
731␉else if(XMLGetProperty(personality, (const char*)"AppleIntelGMAX3100FB"))␊
732␉{␊
733␉␉verbose("Patching AppleIntelGMAX3100FB.kext\n");␊
734␉␉//getc();␊
735␉␉personality =␉␉XMLGetProperty(personality, (const char*)"AppleIntelGMAX3100FB");␊
736␉␉␊
737␉␉offset =␉␉XMLCastStringOffset(XMLGetProperty(personality, (const char*)"IOPCIPrimaryMatch"));␉␉␊
738␉␉replace_string("0x2A028086", newstring, plistbuffer + offset, 10240);␊
739␉␉replace_word(0x2A028086, 0x8086 | (patch_gma_deviceid << 16), executable, zstream.total_out);␊
740␉}␊
741␉else␊
742␉{␊
743␉␉return false;␊
744␉}␊
745␊
746␉␊
747␉if (zstream_inited) inflateEnd(&zstream);␊
748␉␊
749␉␊
750␉zstream.next_in = (UInt8*)executable;␊
751␉zstream.next_out = (UInt8*)compressed_data;␊
752␉␊
753␉zstream.avail_in = full_size;␊
754␉zstream.avail_out = compressed_size;␊
755␉zstream.zalloc = Z_NULL;␊
756␉zstream.zfree = Z_NULL;␊
757␉zstream.opaque = Z_NULL;␊
758␉␊
759␉␊
760␉␊
761␉// Recompress the eecutable␊
762␉zlib_result = deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,15, 8 /* memLevel */, Z_DEFAULT_STRATEGY);␊
763␉if (Z_OK != zlib_result) {␊
764␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊
765␉␉getc();␊
766␉}␊
767␉else ␊
768␉{␊
769␉␉zstream_inited = true;␊
770␉}␊
771␉␊
772␉zlib_result = deflate(&zstream, Z_FINISH);␊
773␉␊
774␉if (zlib_result == Z_STREAM_END)␊
775␉{␊
776␉␉DBG("Deflated result is %d, avail: %d bytes, out: %d bytes, full: %d\n", zlib_result, compressed_size, zstream.total_out, full_size);␊
777␉} ␊
778␉else if (zlib_result == Z_OK)␊
779␉{␊
780␉␉/* deflate filled output buffer, meaning the data doesn't compress.␊
781␉␉ */␊
782␉␉printf("Deflated result is %d, in: %d bytes, out: %d bytes, full: %d\n", zlib_result, zstream.total_in, zstream.total_out, full_size);␊
783␉␉printf("ERROR: Unable to compress patched kext, not enough room.\n");␊
784␉␉pause();␊
785␉␉␊
786␉} ␊
787␉else if (zlib_result != Z_STREAM_ERROR)␊
788␉{␊
789␉␉printf("ZLIB Deflate Error: %s\n", zstream.msg);␊
790␉␉getc();␊
791␉}␊
792␉if(zstream.total_out < compressed_size) kext->compressed_size = MKEXT_SWAP(zstream.total_out);␊
793␊
794␉␊
795␉␊
796␉␊
797␉if (zstream_inited) deflateEnd(&zstream);␊
798␉␊
799␉free(executable);␊
800␉␊
801␉return true;␉␊
802}␊
803␊
804int chartohex(char c)␊
805{␊
806␉if(c <= '9' && c >= '0')␊
807␉{␊
808␉␉return c - '0';␉// c is between 0 and 9␊
809␉}␊
810␉else if(c <= 'F' && c >= 'A')␊
811␉{␊
812␉␉return c - 'A' + 10; // c = 10 - 15;␊
813␉}␊
814␉else if(c <= 'f' && c >= 'a')␊
815␉{␊
816␉␉return c - 'a' + 10; // c = 10 - 15;␊
817␉}␊
818␉return 0;␊
819}

Archive Download this file

Revision: 647