ldid.cpp

   1 /* JocStrap - Java/Objective-C Bootstrap
   2  * Copyright (C) 2007  Jay Freeman (saurik)
   3 */
   4
   5 /*
   6  *        Redistribution and use in source and binary
   7  * forms, with or without modification, are permitted
   8  * provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the
  11  *    above copyright notice, this list of conditions
  12  *    and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the
  14  *    above copyright notice, this list of conditions
  15  *    and the following disclaimer in the documentation
  16  *    and/or other materials provided with the
  17  *    distribution.
  18  * 3. The name of the author may not be used to endorse
  19  *    or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  24  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  28  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  33  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  34  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  35  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36 */
  37
  38 #include "minimal/stdlib.h"
  39 #include "minimal/string.h"
  40 #include "minimal/mapping.h"
  41
  42 #include "sha1.h"
  43
  44 #include <cstring>
  45 #include <string>
  46 #include <vector>
  47
  48 #include <sys/wait.h>
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51
  52 struct fat_header {
  53     uint32_t magic;
  54     uint32_t nfat_arch;
  55 } _packed;
  56
  57 #define FAT_MAGIC 0xcafebabe
  58 #define FAT_CIGAM 0xbebafeca
  59
  60 struct fat_arch {
  61     uint32_t cputype;
  62     uint32_t cpusubtype;
  63     uint32_t offset;
  64     uint32_t size;
  65     uint32_t align;
  66 } _packed;
  67
  68 struct mach_header {
  69     uint32_t magic;
  70     uint32_t cputype;
  71
  72     // XXX: byte swapped?
  73     uint16_t cpusubtype;
  74     uint16_t caps;
  75
  76     uint32_t filetype;
  77     uint32_t ncmds;
  78     uint32_t sizeofcmds;
  79     uint32_t flags;
  80 } _packed;
  81
  82 #define MH_MAGIC 0xfeedface
  83 #define MH_CIGAM 0xcefaedfe
  84
  85 #define MH_MAGIC_64 0xfeedfacf
  86 #define MH_CIGAM_64 0xcffaedfe
  87
  88 #define MH_DYLDLINK   0x4
  89
  90 #define MH_EXECUTE    0x2
  91 #define MH_DYLIB      0x6
  92 #define MH_BUNDLE     0x8
  93 #define MH_DYLIB_STUB 0x9
  94
  95 struct load_command {
  96     uint32_t cmd;
  97     uint32_t cmdsize;
  98 } _packed;
  99
 100 #define LC_REQ_DYLD  uint32_t(0x80000000)
 101
 102 #define LC_SEGMENT         uint32_t(0x01)
 103 #define LC_LOAD_DYLIB      uint32_t(0x0c)
 104 #define LC_ID_DYLIB        uint32_t(0x0d)
 105 #define LC_UUID            uint32_t(0x1b)
 106 #define LC_CODE_SIGNATURE  uint32_t(0x1d)
 107 #define LC_REEXPORT_DYLIB  uint32_t(0x1f | LC_REQ_DYLD)
 108
 109 struct dylib {
 110     uint32_t name;
 111     uint32_t timestamp;
 112     uint32_t current_version;
 113     uint32_t compatibility_version;
 114 } _packed;
 115
 116 struct dylib_command {
 117     uint32_t cmd;
 118     uint32_t cmdsize;
 119     struct dylib dylib;
 120 } _packed;
 121
 122 struct uuid_command {
 123     uint32_t cmd;
 124     uint32_t cmdsize;
 125     uint8_t uuid[16];
 126 } _packed;
 127
 128 struct segment_command {
 129     uint32_t cmd;
 130     uint32_t cmdsize;
 131     char segname[16];
 132     uint32_t vmaddr;
 133     uint32_t vmsize;
 134     uint32_t fileoff;
 135     uint32_t filesize;
 136     uint32_t maxprot;
 137     uint32_t initprot;
 138     uint32_t nsects;
 139     uint32_t flags;
 140 };
 141
 142 struct section {
 143     char sectname[16];
 144     char segname[16];
 145     uint32_t addr;
 146     uint32_t size;
 147     uint32_t offset;
 148     uint32_t align;
 149     uint32_t reloff;
 150     uint32_t nreloc;
 151     uint32_t flags;
 152     uint32_t reserved1;
 153     uint32_t reserved2;
 154 };
 155
 156 struct linkedit_data_command {
 157     uint32_t cmd;
 158     uint32_t cmdsize;
 159     uint32_t dataoff;
 160     uint32_t datasize;
 161 } _packed;
 162
 163 uint16_t Swap_(uint16_t value) {
 164     return
 165         ((value >>  8) & 0x00ff) |
 166         ((value <<  8) & 0xff00);
 167 }
 168
 169 uint32_t Swap_(uint32_t value) {
 170     value = ((value >>  8) & 0x00ff00ff) |
 171             ((value <<  8) & 0xff00ff00);
 172     value = ((value >> 16) & 0x0000ffff) |
 173             ((value << 16) & 0xffff0000);
 174     return value;
 175 }
 176
 177 int16_t Swap_(int16_t value) {
 178     return Swap_(static_cast<uint16_t>(value));
 179 }
 180
 181 int32_t Swap_(int32_t value) {
 182     return Swap_(static_cast<uint32_t>(value));
 183 }
 184
 185 uint16_t Swap(uint16_t value) {
 186     return true ? Swap_(value) : value;
 187 }
 188
 189 uint32_t Swap(uint32_t value) {
 190     return true ? Swap_(value) : value;
 191 }
 192
 193 int16_t Swap(int16_t value) {
 194     return Swap(static_cast<uint16_t>(value));
 195 }
 196
 197 int32_t Swap(int32_t value) {
 198     return Swap(static_cast<uint32_t>(value));
 199 }
 200
 201 template <typename Target_>
 202 class Pointer;
 203
 204 class Framework {
 205   private:
 206     void *base_;
 207     size_t size_;
 208
 209     struct mach_header *mach_header_;
 210     struct load_command *load_command_;
 211
 212     bool swapped_;
 213     bool bits64_;
 214
 215   public:
 216     uint16_t Swap(uint16_t value) const {
 217         return swapped_ ? Swap_(value) : value;
 218     }
 219
 220     uint32_t Swap(uint32_t value) const {
 221         return swapped_ ? Swap_(value) : value;
 222     }
 223
 224     int16_t Swap(int16_t value) const {
 225         return Swap(static_cast<uint16_t>(value));
 226     }
 227
 228     int32_t Swap(int32_t value) const {
 229         return Swap(static_cast<uint32_t>(value));
 230     }
 231
 232     Framework(const char *framework_path) :
 233         swapped_(false)
 234     {
 235         base_ = map(framework_path, 0, _not(size_t), &size_, false);
 236         fat_header *fat_header = reinterpret_cast<struct fat_header *>(base_);
 237
 238         if (Swap(fat_header->magic) == FAT_CIGAM) {
 239             swapped_ = !swapped_;
 240             goto fat;
 241         } else if (Swap(fat_header->magic) != FAT_MAGIC)
 242             mach_header_ = (mach_header *) base_;
 243         else fat: {
 244             size_t fat_narch = Swap(fat_header->nfat_arch);
 245             fat_arch *fat_arch = reinterpret_cast<struct fat_arch *>(fat_header + 1);
 246             size_t arch;
 247             for (arch = 0; arch != fat_narch; ++arch) {
 248                 uint32_t arch_offset = Swap(fat_arch->offset);
 249                 mach_header_ = (mach_header *) ((uint8_t *) base_ + arch_offset);
 250                 goto found;
 251                 ++fat_arch;
 252             }
 253
 254             _assert(false);
 255         }
 256
 257       found:
 258         switch (Swap(mach_header_->magic)) {
 259             case MH_CIGAM:
 260                 swapped_ = !swapped_;
 261             case MH_MAGIC:
 262                 bits64_ = false;
 263             break;
 264
 265             case MH_CIGAM_64:
 266                 swapped_ = !swapped_;
 267             case MH_MAGIC_64:
 268                 bits64_ = true;
 269             break;
 270
 271             default:
 272                 _assert(false);
 273         }
 274
 275         void *post = mach_header_ + 1;
 276         if (bits64_)
 277             post = (uint32_t *) post + 1;
 278         load_command_ = (struct load_command *) post;
 279
 280         _assert(
 281             Swap(mach_header_->filetype) == MH_EXECUTE ||
 282             Swap(mach_header_->filetype) == MH_DYLIB ||
 283             Swap(mach_header_->filetype) == MH_BUNDLE
 284         );
 285     }
 286
 287     struct mach_header *operator ->() const {
 288         return mach_header_;
 289     }
 290
 291     void *GetBase() {
 292         return base_;
 293     }
 294
 295     size_t GetSize() const {
 296         return size_;
 297     }
 298
 299     std::vector<struct load_command *> GetLoadCommands() {
 300         std::vector<struct load_command *> load_commands;
 301
 302         struct load_command *load_command = load_command_;
 303         for (uint32_t cmd = 0; cmd != Swap(mach_header_->ncmds); ++cmd) {
 304             load_commands.push_back(load_command);
 305             load_command = (struct load_command *) ((uint8_t *) load_command + Swap(load_command->cmdsize));
 306         }
 307
 308         return load_commands;
 309     }
 310
 311     std::vector<segment_command *> GetSegments(const char *segment_name) {
 312         std::vector<struct segment_command *> segment_commands;
 313
 314         _foreach (load_command, GetLoadCommands())
 315             if (Swap((*load_command)->cmd) == LC_SEGMENT) {
 316                 segment_command *segment_command = reinterpret_cast<struct segment_command *>(*load_command);
 317                 if (strncmp(segment_command->segname, segment_name, 16) == 0)
 318                     segment_commands.push_back(segment_command);
 319             }
 320
 321         return segment_commands;
 322     }
 323
 324     std::vector<section *> GetSections(const char *segment_name, const char *section_name) {
 325         std::vector<section *> sections;
 326
 327         _foreach (segment, GetSegments(segment_name)) {
 328             section *section = (struct section *) (*segment + 1);
 329
 330             uint32_t sect;
 331             for (sect = 0; sect != Swap((*segment)->nsects); ++sect) {
 332                 if (strncmp(section->sectname, section_name, 16) == 0)
 333                     sections.push_back(section);
 334                 ++section;
 335             }
 336         }
 337
 338         return sections;
 339     }
 340
 341     template <typename Target_>
 342     Pointer<Target_> GetPointer(uint32_t address, const char *segment_name = NULL) {
 343         load_command *load_command = (struct load_command *) (mach_header_ + 1);
 344         uint32_t cmd;
 345
 346         for (cmd = 0; cmd != Swap(mach_header_->ncmds); ++cmd) {
 347             if (Swap(load_command->cmd) == LC_SEGMENT) {
 348                 segment_command *segment_command = (struct segment_command *) load_command;
 349                 if (segment_name != NULL && strncmp(segment_command->segname, segment_name, 16) != 0)
 350                     goto next_command;
 351
 352                 section *sections = (struct section *) (segment_command + 1);
 353
 354                 uint32_t sect;
 355                 for (sect = 0; sect != Swap(segment_command->nsects); ++sect) {
 356                     section *section = &sections[sect];
 357                     //printf("%s %u %p %p %u\n", segment_command->segname, sect, address, section->addr, section->size);
 358                     if (address >= Swap(section->addr) && address < Swap(section->addr) + Swap(section->size)) {
 359                         //printf("0x%.8x %s\n", address, segment_command->segname);
 360                         return Pointer<Target_>(this, reinterpret_cast<Target_ *>(address - Swap(section->addr) + Swap(section->offset) + (char *) mach_header_));
 361                     }
 362                 }
 363             }
 364
 365           next_command:
 366             load_command = (struct load_command *) ((char *) load_command + Swap(load_command->cmdsize));
 367         }
 368
 369         return Pointer<Target_>(this);
 370     }
 371
 372     template <typename Target_>
 373     Pointer<Target_> GetOffset(uint32_t offset) {
 374         return Pointer<Target_>(this, reinterpret_cast<Target_ *>(offset + (uint8_t *) mach_header_));
 375     }
 376 };
 377
 378 template <typename Target_>
 379 class Pointer {
 380   private:
 381     const Framework *framework_;
 382     const Target_ *pointer_;
 383
 384   public:
 385     Pointer(const Framework *framework = NULL, const Target_ *pointer = NULL) :
 386         framework_(framework),
 387         pointer_(pointer)
 388     {
 389     }
 390
 391     operator const Target_ *() const {
 392         return pointer_;
 393     }
 394
 395     const Target_ *operator ->() const {
 396         return pointer_;
 397     }
 398
 399     Pointer<Target_> &operator ++() {
 400         ++pointer_;
 401         return *this;
 402     }
 403
 404     template <typename Value_>
 405     Value_ Swap(Value_ value) {
 406         return framework_->Swap(value);
 407     }
 408 };
 409
 410 #define CSMAGIC_CODEDIRECTORY      uint32_t(0xfade0c02)
 411 #define CSMAGIC_EMBEDDED_SIGNATURE uint32_t(0xfade0cc0)
 412 #define CSMAGIC_ENTITLEMENTS       uint32_t(0xfade7171)
 413
 414 #define CSSLOT_CODEDIRECTORY uint32_t(0)
 415 #define CSSLOT_REQUIREMENTS  uint32_t(2)
 416 #define CSSLOT_ENTITLEMENTS  uint32_t(5)
 417
 418 struct BlobIndex {
 419     uint32_t type;
 420     uint32_t offset;
 421 } _packed;
 422
 423 struct Blob {
 424     uint32_t magic;
 425     uint32_t length;
 426 } _packed;
 427
 428 struct SuperBlob {
 429     struct Blob blob;
 430     uint32_t count;
 431     struct BlobIndex index[];
 432 } _packed;
 433
 434 struct CodeDirectory {
 435     struct Blob blob;
 436     uint32_t version;
 437     uint32_t flags;
 438     uint32_t hashOffset;
 439     uint32_t identOffset;
 440     uint32_t nSpecialSlots;
 441     uint32_t nCodeSlots;
 442     uint32_t codeLimit;
 443     uint8_t hashSize;
 444     uint8_t hashType;
 445     uint8_t spare1;
 446     uint8_t pageSize;
 447     uint32_t spare2;
 448 } _packed;
 449
 450 extern "C" uint32_t hash(uint8_t *k, uint32_t length, uint32_t initval);
 451
 452 #define CODESIGN_ALLOCATE "arm-apple-darwin9-codesign_allocate"
 453
 454 void sha1(uint8_t *hash, uint8_t *data, size_t size) {
 455     SHA1Context context;
 456     SHA1Reset(&context);
 457     SHA1Input(&context, data, size);
 458     SHA1Result(&context, hash);
 459 }
 460
 461 int main(int argc, const char *argv[]) {
 462     bool flag_R(false);
 463     bool flag_t(false);
 464     bool flag_p(false);
 465     bool flag_u(false);
 466     bool flag_e(false);
 467
 468     bool flag_T(false);
 469
 470     bool flag_S(false);
 471     bool flag_s(false);
 472
 473     bool timeh(false);
 474     uint32_t timev(0);
 475
 476     const void *xmld(NULL);
 477     size_t xmls(0);
 478
 479     uintptr_t noffset(_not(uintptr_t));
 480     uintptr_t woffset(_not(uintptr_t));
 481
 482     std::vector<std::string> files;
 483
 484     if (argc == 1) {
 485         fprintf(stderr, "usage: %s -S[entitlements.xml] <binary>\n", argv[0]);
 486         fprintf(stderr, "   %s -e MobileSafari\n", argv[0]);
 487         fprintf(stderr, "   %s -S cat\n", argv[0]);
 488         fprintf(stderr, "   %s -Stfp.xml gdb\n", argv[0]);
 489         exit(0);
 490     }
 491
 492     for (int argi(1); argi != argc; ++argi)
 493         if (argv[argi][0] != '-')
 494             files.push_back(argv[argi]);
 495         else switch (argv[argi][1]) {
 496             case 'R': flag_R = true; break;
 497             case 't': flag_t = true; break;
 498             case 'u': flag_u = true; break;
 499             case 'p': flag_p = true; break;
 500             case 'e': flag_e = true; break;
 501
 502             case 's':
 503                 _assert(!flag_S);
 504                 flag_s = true;
 505             break;
 506
 507             case 'S':
 508                 _assert(!flag_s);
 509                 flag_S = true;
 510                 if (argv[argi][2] != '\0') {
 511                     const char *xml = argv[argi] + 2;
 512                     xmld = map(xml, 0, _not(size_t), &xmls, true);
 513                 }
 514             break;
 515
 516             case 'T': {
 517                 flag_T = true;
 518                 if (argv[argi][2] == '-')
 519                     timeh = true;
 520                 else {
 521                     char *arge;
 522                     timev = strtoul(argv[argi] + 2, &arge, 0);
 523                     _assert(arge == argv[argi] + strlen(argv[argi]));
 524                 }
 525             } break;
 526
 527             case 'n': {
 528                 char *arge;
 529                 noffset = strtoul(argv[argi] + 2, &arge, 0);
 530                 _assert(arge == argv[argi] + strlen(argv[argi]));
 531             } break;
 532
 533             case 'w': {
 534                 char *arge;
 535                 woffset = strtoul(argv[argi] + 2, &arge, 0);
 536                 _assert(arge == argv[argi] + strlen(argv[argi]));
 537             } break;
 538
 539             default:
 540                 goto usage;
 541             break;
 542         }
 543
 544     if (files.empty()) usage: {
 545         exit(0);
 546     }
 547
 548     size_t filei(0), filee(0);
 549     _foreach (file, files) try {
 550         const char *path(file->c_str());
 551         const char *base = strrchr(path, '/');
 552         char *temp(NULL), *dir;
 553
 554         if (base != NULL)
 555             dir = strndup_(path, base++ - path + 1);
 556         else {
 557             dir = strdup("");
 558             base = path;
 559         }
 560
 561         if (flag_S) {
 562             asprintf(&temp, "%s.%s.cs", dir, base);
 563             const char *allocate = getenv("CODESIGN_ALLOCATE");
 564             if (allocate == NULL)
 565                 allocate = "codesign_allocate";
 566
 567             size_t size = _not(size_t);
 568             const char *arch; {
 569                 Framework framework(path);
 570                 framework->flags |= MH_DYLDLINK;
 571
 572                 _foreach (load_command, framework.GetLoadCommands()) {
 573                     uint32_t cmd(framework.Swap((*load_command)->cmd));
 574                     if (cmd == LC_CODE_SIGNATURE) {
 575                         struct linkedit_data_command *signature = reinterpret_cast<struct linkedit_data_command *>(*load_command);
 576                         size = framework.Swap(signature->dataoff);
 577                         _assert(size < framework.GetSize());
 578                         break;
 579                     }
 580                 }
 581
 582                 if (size == _not(size_t))
 583                     size = framework.GetSize();
 584
 585                 switch (framework->cputype) {
 586                     case 7: switch (framework->cpusubtype) {
 587                         case 3: arch = "i386"; break;
 588                         default: arch = NULL; break;
 589                     } break;
 590
 591                     case 12: switch (framework->cpusubtype) {
 592                         case 0: arch = "arm"; break;
 593                         case 6: arch = "armv6"; break;
 594                         case 9: arch = "armv7"; break;
 595                         default: arch = NULL; break;
 596                     } break;
 597
 598                     case 16777223: switch (framework->cpusubtype) {
 599                         case 3: arch = "x86_64"; break;
 600                         default: arch = NULL; break;
 601                     } break;
 602
 603                     default: arch = NULL; break;
 604                 }
 605             }
 606
 607             _assert(arch != NULL);
 608
 609             pid_t pid = fork();
 610             _syscall(pid);
 611             if (pid == 0) {
 612                 char *ssize;
 613                 asprintf(&ssize, "%u", (sizeof(struct SuperBlob) + 2 * sizeof(struct BlobIndex) + sizeof(struct CodeDirectory) + strlen(base) + 1 + ((xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS) + (size + 0x1000 - 1) / 0x1000) * 0x14 + 0xc + (xmld == NULL ? 0 : 0x10 + xmls) + 15) / 16 * 16);
 614                 //printf("%s -i %s -a %s %s -o %s\n", allocate, path, arch, ssize, temp);
 615                 execlp(allocate, allocate, "-i", path, "-a", arch, ssize, "-o", temp, NULL);
 616                 _assert(false);
 617             }
 618
 619             int status;
 620             _syscall(waitpid(pid, &status, 0));
 621             _assert(WIFEXITED(status));
 622             _assert(WEXITSTATUS(status) == 0);
 623         }
 624
 625         Framework framework(temp == NULL ? path : temp);
 626         struct linkedit_data_command *signature(NULL);
 627
 628         if (flag_p)
 629             printf("path%zu='%s'\n", filei, file->c_str());
 630
 631         if (woffset != _not(uintptr_t)) {
 632             Pointer<uint32_t> wvalue(framework.GetPointer<uint32_t>(woffset));
 633             if (wvalue == NULL)
 634                 printf("(null) %p\n", reinterpret_cast<void *>(woffset));
 635             else
 636                 printf("0x%.08x\n", *wvalue);
 637         }
 638
 639         if (noffset != _not(uintptr_t))
 640             printf("%s\n", &*framework.GetPointer<char>(noffset));
 641
 642         _foreach (load_command, framework.GetLoadCommands()) {
 643             uint32_t cmd(framework.Swap((*load_command)->cmd));
 644
 645             if (flag_R && cmd == LC_REEXPORT_DYLIB)
 646                 (*load_command)->cmd = framework.Swap(LC_LOAD_DYLIB);
 647             else if (cmd == LC_CODE_SIGNATURE)
 648                 signature = reinterpret_cast<struct linkedit_data_command *>(*load_command);
 649             else if (cmd == LC_UUID) {
 650                 volatile struct uuid_command *uuid_command(reinterpret_cast<struct uuid_command *>(*load_command));
 651
 652                 if (flag_u) {
 653                     printf("uuid%zu=%.2x%.2x%.2x%.2x-%.2x%.2x-%.2x%.2x-%.2x%.2x-%.2x%.2x%.2x%.2x%.2x%.2x\n", filei,
 654                         uuid_command->uuid[ 0], uuid_command->uuid[ 1], uuid_command->uuid[ 2], uuid_command->uuid[ 3],
 655                         uuid_command->uuid[ 4], uuid_command->uuid[ 5], uuid_command->uuid[ 6], uuid_command->uuid[ 7],
 656                         uuid_command->uuid[ 8], uuid_command->uuid[ 9], uuid_command->uuid[10], uuid_command->uuid[11],
 657                         uuid_command->uuid[12], uuid_command->uuid[13], uuid_command->uuid[14], uuid_command->uuid[15]
 658                     );
 659                 }
 660             } else if (cmd == LC_ID_DYLIB) {
 661                 volatile struct dylib_command *dylib_command(reinterpret_cast<struct dylib_command *>(*load_command));
 662
 663                 if (flag_t)
 664                     printf("time%zu=0x%.8x\n", filei, framework.Swap(dylib_command->dylib.timestamp));
 665
 666                 if (flag_T) {
 667                     uint32_t timed;
 668
 669                     if (!timeh)
 670                         timed = timev;
 671                     else {
 672                         dylib_command->dylib.timestamp = 0;
 673                         timed = hash(reinterpret_cast<uint8_t *>(framework.GetBase()), framework.GetSize(), timev);
 674                     }
 675
 676                     dylib_command->dylib.timestamp = framework.Swap(timed);
 677                 }
 678             }
 679         }
 680
 681         if (flag_e) {
 682             _assert(signature != NULL);
 683
 684             uint32_t data = framework.Swap(signature->dataoff);
 685             uint32_t size = framework.Swap(signature->datasize);
 686
 687             uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
 688             uint8_t *blob = top + data;
 689             struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
 690
 691             for (size_t index(0); index != Swap(super->count); ++index)
 692                 if (Swap(super->index[index].type) == CSSLOT_ENTITLEMENTS) {
 693                     uint32_t begin = Swap(super->index[index].offset);
 694                     struct Blob *entitlements = reinterpret_cast<struct Blob *>(blob + begin);
 695                     fwrite(entitlements + 1, 1, Swap(entitlements->length) - sizeof(struct Blob), stdout);
 696                 }
 697         }
 698
 699         if (flag_s) {
 700             _assert(signature != NULL);
 701
 702             uint32_t data = framework.Swap(signature->dataoff);
 703             uint32_t size = framework.Swap(signature->datasize);
 704
 705             uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
 706             uint8_t *blob = top + data;
 707             struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
 708
 709             for (size_t index(0); index != Swap(super->count); ++index)
 710                 if (Swap(super->index[index].type) == CSSLOT_CODEDIRECTORY) {
 711                     uint32_t begin = Swap(super->index[index].offset);
 712                     struct CodeDirectory *directory = reinterpret_cast<struct CodeDirectory *>(blob + begin);
 713
 714                     uint8_t (*hashes)[20] = reinterpret_cast<uint8_t (*)[20]>(blob + begin + Swap(directory->hashOffset));
 715                     uint32_t pages = Swap(directory->nCodeSlots);
 716
 717                     if (pages != 1)
 718                         for (size_t i = 0; i != pages - 1; ++i)
 719                             sha1(hashes[i], top + 0x1000 * i, 0x1000);
 720                     if (pages != 0)
 721                         sha1(hashes[pages - 1], top + 0x1000 * (pages - 1), ((data - 1) % 0x1000) + 1);
 722                 }
 723         }
 724
 725         if (flag_S) {
 726             _assert(signature != NULL);
 727
 728             uint32_t data = framework.Swap(signature->dataoff);
 729             uint32_t size = framework.Swap(signature->datasize);
 730
 731             uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
 732             uint8_t *blob = top + data;
 733             struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
 734             super->blob.magic = Swap(CSMAGIC_EMBEDDED_SIGNATURE);
 735
 736             uint32_t count = xmld == NULL ? 2 : 3;
 737             uint32_t offset = sizeof(struct SuperBlob) + count * sizeof(struct BlobIndex);
 738
 739             super->index[0].type = Swap(CSSLOT_CODEDIRECTORY);
 740             super->index[0].offset = Swap(offset);
 741
 742             uint32_t begin = offset;
 743             struct CodeDirectory *directory = reinterpret_cast<struct CodeDirectory *>(blob + begin);
 744             offset += sizeof(struct CodeDirectory);
 745
 746             directory->blob.magic = Swap(CSMAGIC_CODEDIRECTORY);
 747             directory->version = Swap(uint32_t(0x00020001));
 748             directory->flags = Swap(uint32_t(0));
 749             directory->codeLimit = Swap(data);
 750             directory->hashSize = 0x14;
 751             directory->hashType = 0x01;
 752             directory->spare1 = 0x00;
 753             directory->pageSize = 0x0c;
 754             directory->spare2 = Swap(uint32_t(0));
 755
 756             directory->identOffset = Swap(offset - begin);
 757             strcpy(reinterpret_cast<char *>(blob + offset), base);
 758             offset += strlen(base) + 1;
 759
 760             uint32_t special = xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS;
 761             directory->nSpecialSlots = Swap(special);
 762
 763             uint8_t (*hashes)[20] = reinterpret_cast<uint8_t (*)[20]>(blob + offset);
 764             memset(hashes, 0, sizeof(*hashes) * special);
 765
 766             offset += sizeof(*hashes) * special;
 767             hashes += special;
 768
 769             uint32_t pages = (data + 0x1000 - 1) / 0x1000;
 770             directory->nCodeSlots = Swap(pages);
 771
 772             if (pages != 1)
 773                 for (size_t i = 0; i != pages - 1; ++i)
 774                     sha1(hashes[i], top + 0x1000 * i, 0x1000);
 775             if (pages != 0)
 776                 sha1(hashes[pages - 1], top + 0x1000 * (pages - 1), ((data - 1) % 0x1000) + 1);
 777
 778             directory->hashOffset = Swap(offset - begin);
 779             offset += sizeof(*hashes) * pages;
 780             directory->blob.length = Swap(offset - begin);
 781
 782             super->index[1].type = Swap(CSSLOT_REQUIREMENTS);
 783             super->index[1].offset = Swap(offset);
 784
 785             memcpy(blob + offset, "\xfa\xde\x0c\x01\x00\x00\x00\x0c\x00\x00\x00\x00", 0xc);
 786             offset += 0xc;
 787
 788             if (xmld != NULL) {
 789                 super->index[2].type = Swap(CSSLOT_ENTITLEMENTS);
 790                 super->index[2].offset = Swap(offset);
 791
 792                 uint32_t begin = offset;
 793                 struct Blob *entitlements = reinterpret_cast<struct Blob *>(blob + begin);
 794                 offset += sizeof(struct Blob);
 795
 796                 memcpy(blob + offset, xmld, xmls);
 797                 offset += xmls;
 798
 799                 entitlements->magic = Swap(CSMAGIC_ENTITLEMENTS);
 800                 entitlements->length = Swap(offset - begin);
 801             }
 802
 803             for (size_t index(0); index != count; ++index) {
 804                 uint32_t type = Swap(super->index[index].type);
 805                 if (type != 0 && type <= special) {
 806                     uint32_t offset = Swap(super->index[index].offset);
 807                     struct Blob *local = (struct Blob *) (blob + offset);
 808                     sha1((uint8_t *) (hashes - type), (uint8_t *) local, Swap(local->length));
 809                 }
 810             }
 811
 812             super->count = Swap(count);
 813             super->blob.length = Swap(offset);
 814
 815             if (offset > size) {
 816                 fprintf(stderr, "offset (%u) > size (%u)\n", offset, size);
 817                 _assert(false);
 818             } //else fprintf(stderr, "offset (%zu) <= size (%zu)\n", offset, size);
 819
 820             memset(blob + offset, 0, size - offset);
 821         }
 822
 823         if (flag_S) {
 824             uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
 825             size_t size = framework.GetSize();
 826
 827             char *copy;
 828             asprintf(&copy, "%s.%s.cp", dir, base);
 829             FILE *file = fopen(copy, "w+");
 830             size_t writ = fwrite(top, 1, size, file);
 831             _assert(writ == size);
 832             fclose(file);
 833
 834             _syscall(unlink(temp));
 835             free(temp);
 836             temp = copy;
 837         }
 838
 839         if (temp) {
 840             struct stat info;
 841             _syscall(stat(path, &info));
 842             _syscall(chown(temp, info.st_uid, info.st_gid));
 843             _syscall(chmod(temp, info.st_mode));
 844             _syscall(unlink(path));
 845             _syscall(rename(temp, path));
 846             free(temp);
 847         }
 848
 849         free(dir);
 850         ++filei;
 851     } catch (const char *) {
 852         ++filee;
 853         ++filei;
 854     }
 855
 856     return filee;
 857 }