1/* 2 * Copyright (c) 2006-2013 Apple Computer, Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24// 25// macho++ - Mach-O object file helpers 26// 27#include "macho++.h" 28#include <security_utilities/alloc.h> 29#include <security_utilities/memutils.h> 30#include <security_utilities/endian.h> 31#include <mach-o/dyld.h> 32#include <list> 33#include <algorithm> 34#include <iterator> 35 36namespace Security { 37 38/* Maximum number of archs a fat binary can have */ 39static const int MAX_ARCH_COUNT = 100; 40/* Maximum power of 2 that a mach-o can be aligned by */ 41static const int MAX_ALIGN = 30; 42 43// 44// Architecture values 45// 46Architecture::Architecture(const fat_arch &arch) 47 : pair<cpu_type_t, cpu_subtype_t>(arch.cputype, arch.cpusubtype) 48{ 49} 50 51Architecture::Architecture(const char *name) 52{ 53 if (const NXArchInfo *nxa = NXGetArchInfoFromName(name)) { 54 this->first = nxa->cputype; 55 this->second = nxa->cpusubtype; 56 } else { 57 this->first = this->second = none; 58 } 59} 60 61 62// 63// The local architecture. 64// 65// We take this from ourselves - the architecture of our main program Mach-O binary. 66// There's the NXGetLocalArchInfo API, but it insists on saying "i386" on modern 67// x86_64-centric systems, and lies to ppc (Rosetta) programs claiming they're native ppc. 68// So let's not use that. 69// 70Architecture Architecture::local() 71{ 72 return MainMachOImage().architecture(); 73} 74 75 76// 77// Translate between names and numbers 78// 79const char *Architecture::name() const 80{ 81 if (const NXArchInfo *info = NXGetArchInfoFromCpuType(cpuType(), cpuSubtype())) 82 return info->name; 83 else 84 return NULL; 85} 86 87std::string Architecture::displayName() const 88{ 89 if (const char *s = this->name()) 90 return s; 91 char buf[20]; 92 snprintf(buf, sizeof(buf), "(%d:%d)", cpuType(), cpuSubtype()); 93 return buf; 94} 95 96 97// 98// Compare architectures. 99// This is asymmetrical; the second argument provides for some templating. 100// 101bool Architecture::matches(const Architecture &templ) const 102{ 103 if (first != templ.first) 104 return false; // main architecture mismatch 105 if (templ.second == CPU_SUBTYPE_MULTIPLE) 106 return true; // subtype wildcard 107 // match subtypes, ignoring feature bits 108 return ((second ^ templ.second) & ~CPU_SUBTYPE_MASK) == 0; 109} 110 111 112// 113// MachOBase contains knowledge of the Mach-O object file format, 114// but abstracts from any particular sourcing. It must be subclassed, 115// and the subclass must provide the file header and commands area 116// during its construction. Memory is owned by the subclass. 117// 118MachOBase::~MachOBase() 119{ /* virtual */ } 120 121// provide the Mach-O file header, somehow 122void MachOBase::initHeader(const mach_header *header) 123{ 124 mHeader = header; 125 switch (mHeader->magic) { 126 case MH_MAGIC: 127 mFlip = false; 128 m64 = false; 129 break; 130 case MH_CIGAM: 131 mFlip = true; 132 m64 = false; 133 break; 134 case MH_MAGIC_64: 135 mFlip = false; 136 m64 = true; 137 break; 138 case MH_CIGAM_64: 139 mFlip = true; 140 m64 = true; 141 break; 142 default: 143 secdebug("macho", "%p: unrecognized header magic (%x)", this, mHeader->magic); 144 UnixError::throwMe(ENOEXEC); 145 } 146} 147 148// provide the Mach-O commands section, somehow 149void MachOBase::initCommands(const load_command *commands) 150{ 151 mCommands = commands; 152 mEndCommands = LowLevelMemoryUtilities::increment<load_command>(commands, flip(mHeader->sizeofcmds)); 153 if (mCommands + 1 > mEndCommands) // ensure initial load command core available 154 UnixError::throwMe(ENOEXEC); 155} 156 157 158size_t MachOBase::headerSize() const 159{ 160 return m64 ? sizeof(mach_header_64) : sizeof(mach_header); 161} 162 163size_t MachOBase::commandSize() const 164{ 165 return flip(mHeader->sizeofcmds); 166} 167 168 169// 170// Create a MachO object from an open file and a starting offset. 171// We load (only) the header and load commands into memory at that time. 172// Note that the offset must be relative to the start of the containing file 173// (not relative to some intermediate container). 174// 175MachO::MachO(FileDesc fd, size_t offset, size_t length) 176 : FileDesc(fd), mOffset(offset), mLength(length), mSuspicious(false) 177{ 178 if (mOffset == 0) 179 mLength = fd.fileSize(); 180 size_t size = fd.read(&mHeaderBuffer, sizeof(mHeaderBuffer), mOffset); 181 if (size != sizeof(mHeaderBuffer)) 182 UnixError::throwMe(ENOEXEC); 183 this->initHeader(&mHeaderBuffer); 184 size_t cmdSize = this->commandSize(); 185 mCommandBuffer = (load_command *)malloc(cmdSize); 186 if (!mCommandBuffer) 187 UnixError::throwMe(); 188 if (fd.read(mCommandBuffer, cmdSize, this->headerSize() + mOffset) != cmdSize) 189 UnixError::throwMe(ENOEXEC); 190 this->initCommands(mCommandBuffer); 191 /* If we do not know the length, we cannot do a verification of the mach-o structure */ 192 if (mLength != 0) 193 this->validateStructure(); 194} 195 196void MachO::validateStructure() 197{ 198 bool isValid = false; 199 200 /* There should be either an LC_SEGMENT, an LC_SEGMENT_64, or an LC_SYMTAB 201 load_command and that + size must be equal to the end of the arch */ 202 for (const struct load_command *cmd = loadCommands(); cmd != NULL; cmd = nextCommand(cmd)) { 203 uint32_t cmd_type = flip(cmd->cmd); 204 struct segment_command *seg = NULL; 205 struct segment_command_64 *seg64 = NULL; 206 struct symtab_command *symtab = NULL; 207 208 if (cmd_type == LC_SEGMENT) { 209 seg = (struct segment_command *)cmd; 210 if (strcmp(seg->segname, SEG_LINKEDIT) == 0) { 211 isValid = flip(seg->fileoff) + flip(seg->filesize) == this->length(); 212 break; 213 } 214 } else if (cmd_type == LC_SEGMENT_64) { 215 seg64 = (struct segment_command_64 *)cmd; 216 if (strcmp(seg64->segname, SEG_LINKEDIT) == 0) { 217 isValid = flip(seg64->fileoff) + flip(seg64->filesize) == this->length(); 218 break; 219 } 220 /* PPC binaries have a SYMTAB section */ 221 } else if (cmd_type == LC_SYMTAB) { 222 symtab = (struct symtab_command *)cmd; 223 isValid = flip(symtab->stroff) + flip(symtab->strsize) == this->length(); 224 break; 225 } 226 } 227 228 if (!isValid) 229 mSuspicious = true; 230} 231 232MachO::~MachO() 233{ 234 ::free(mCommandBuffer); 235} 236 237 238// 239// Create a MachO object that is (entirely) mapped into memory. 240// The caller must ensire that the underlying mapping persists 241// at least as long as our object. 242// 243MachOImage::MachOImage(const void *address) 244{ 245 this->initHeader((const mach_header *)address); 246 this->initCommands(LowLevelMemoryUtilities::increment<const load_command>(address, this->headerSize())); 247} 248 249 250// 251// Locate the Mach-O image of the main program 252// 253MainMachOImage::MainMachOImage() 254 : MachOImage(mainImageAddress()) 255{ 256} 257 258const void *MainMachOImage::mainImageAddress() 259{ 260 return _dyld_get_image_header(0); 261} 262 263 264// 265// Return various header fields 266// 267Architecture MachOBase::architecture() const 268{ 269 return Architecture(flip(mHeader->cputype), flip(mHeader->cpusubtype)); 270} 271 272uint32_t MachOBase::type() const 273{ 274 return flip(mHeader->filetype); 275} 276 277uint32_t MachOBase::flags() const 278{ 279 return flip(mHeader->flags); 280} 281 282 283// 284// Iterate through load commands 285// 286const load_command *MachOBase::nextCommand(const load_command *command) const 287{ 288 using LowLevelMemoryUtilities::increment; 289 command = increment<const load_command>(command, flip(command->cmdsize)); 290 if (command >= mEndCommands) // end of load commands 291 return NULL; 292 if (increment(command, sizeof(load_command)) > mEndCommands 293 || increment(command, flip(command->cmdsize)) > mEndCommands) 294 UnixError::throwMe(ENOEXEC); 295 return command; 296} 297 298 299// 300// Find a specific load command, by command number. 301// If there are multiples, returns the first one found. 302// 303const load_command *MachOBase::findCommand(uint32_t cmd) const 304{ 305 for (const load_command *command = loadCommands(); command; command = nextCommand(command)) 306 if (flip(command->cmd) == cmd) 307 return command; 308 return NULL; 309} 310 311 312// 313// Locate a segment command, by name 314// 315const segment_command *MachOBase::findSegment(const char *segname) const 316{ 317 for (const load_command *command = loadCommands(); command; command = nextCommand(command)) { 318 switch (flip(command->cmd)) { 319 case LC_SEGMENT: 320 case LC_SEGMENT_64: 321 { 322 const segment_command *seg = reinterpret_cast<const segment_command *>(command); 323 if (!strcmp(seg->segname, segname)) 324 return seg; 325 break; 326 } 327 default: 328 break; 329 } 330 } 331 return NULL; 332} 333 334const section *MachOBase::findSection(const char *segname, const char *sectname) const 335{ 336 using LowLevelMemoryUtilities::increment; 337 if (const segment_command *seg = findSegment(segname)) { 338 if (is64()) { 339 const segment_command_64 *seg64 = reinterpret_cast<const segment_command_64 *>(seg); 340 const section_64 *sect = increment<const section_64>(seg64 + 1, 0); 341 for (unsigned n = flip(seg64->nsects); n > 0; n--, sect++) { 342 if (!strcmp(sect->sectname, sectname)) 343 return reinterpret_cast<const section *>(sect); 344 } 345 } else { 346 const section *sect = increment<const section>(seg + 1, 0); 347 for (unsigned n = flip(seg->nsects); n > 0; n--, sect++) { 348 if (!strcmp(sect->sectname, sectname)) 349 return sect; 350 } 351 } 352 } 353 return NULL; 354} 355 356 357// 358// Translate a union lc_str into the string it denotes. 359// Returns NULL (no exceptions) if the entry is corrupt. 360// 361const char *MachOBase::string(const load_command *cmd, const lc_str &str) const 362{ 363 size_t offset = flip(str.offset); 364 const char *sp = LowLevelMemoryUtilities::increment<const char>(cmd, offset); 365 if (offset + strlen(sp) + 1 > flip(cmd->cmdsize)) // corrupt string reference 366 return NULL; 367 return sp; 368} 369 370 371// 372// Figure out where the Code Signing information starts in the Mach-O binary image. 373// The code signature is at the end of the file, and identified 374// by a specially-named section. So its starting offset is also the end 375// of the signable part. 376// Note that the offset returned is relative to the start of the Mach-O image. 377// Returns zero if not found (usually indicating that the binary was not signed). 378// 379const linkedit_data_command *MachOBase::findCodeSignature() const 380{ 381 if (const load_command *cmd = findCommand(LC_CODE_SIGNATURE)) 382 return reinterpret_cast<const linkedit_data_command *>(cmd); 383 return NULL; // not found 384} 385 386size_t MachOBase::signingOffset() const 387{ 388 if (const linkedit_data_command *lec = findCodeSignature()) 389 return flip(lec->dataoff); 390 else 391 return 0; 392} 393 394size_t MachOBase::signingLength() const 395{ 396 if (const linkedit_data_command *lec = findCodeSignature()) 397 return flip(lec->datasize); 398 else 399 return 0; 400} 401 402const linkedit_data_command *MachOBase::findLibraryDependencies() const 403{ 404 if (const load_command *cmd = findCommand(LC_DYLIB_CODE_SIGN_DRS)) 405 return reinterpret_cast<const linkedit_data_command *>(cmd); 406 return NULL; // not found 407} 408 409 410// 411// Return the signing-limit length for this Mach-O binary image. 412// This is the signingOffset if present, or the full length if not. 413// 414size_t MachO::signingExtent() const 415{ 416 if (size_t offset = signingOffset()) 417 return offset; 418 else 419 return length(); 420} 421 422 423// 424// I/O operations 425// 426void MachO::seek(size_t offset) 427{ 428 FileDesc::seek(mOffset + offset); 429} 430 431CFDataRef MachO::dataAt(size_t offset, size_t size) 432{ 433 CFMallocData buffer(size); 434 if (this->read(buffer, size, mOffset + offset) != size) 435 UnixError::throwMe(); 436 return buffer; 437} 438 439// 440// Fat (aka universal) file wrappers. 441// The offset is relative to the start of the containing file. 442// 443Universal::Universal(FileDesc fd, size_t offset /* = 0 */, size_t length /* = 0 */) 444 : FileDesc(fd), mBase(offset), mLength(length), mSuspicious(false) 445{ 446 union { 447 fat_header header; // if this is a fat file 448 mach_header mheader; // if this is a thin file 449 }; 450 const size_t size = max(sizeof(header), sizeof(mheader)); 451 if (fd.read(&header, size, offset) != size) 452 UnixError::throwMe(ENOEXEC); 453 switch (header.magic) { 454 case FAT_MAGIC: 455 case FAT_CIGAM: 456 { 457 // 458 // Hack alert. 459 // Under certain circumstances (15001604), mArchCount under-counts the architectures 460 // by one, and special testing is required to validate the extra-curricular entry. 461 // We always read an extra entry; in the situations where this might hit end-of-file, 462 // we are content to fail. 463 // 464 mArchCount = ntohl(header.nfat_arch); 465 size_t archSize = sizeof(fat_arch) * (mArchCount + 1); 466 mArchList = (fat_arch *)malloc(archSize); 467 if (!mArchList) 468 UnixError::throwMe(); 469 if (fd.read(mArchList, archSize, mBase + sizeof(header)) != archSize) { 470 ::free(mArchList); 471 UnixError::throwMe(ENOEXEC); 472 } 473 for (fat_arch *arch = mArchList; arch <= mArchList + mArchCount; arch++) { 474 n2hi(arch->cputype); 475 n2hi(arch->cpusubtype); 476 n2hi(arch->offset); 477 n2hi(arch->size); 478 n2hi(arch->align); 479 } 480 const fat_arch *last_arch = mArchList + mArchCount; 481 if (last_arch->cputype == (CPU_ARCH_ABI64 | CPU_TYPE_ARM)) { 482 mArchCount++; 483 } 484 secdebug("macho", "%p is a fat file with %d architectures", 485 this, mArchCount); 486 487 /* A Mach-O universal file has padding of no more than "page size" 488 * between the header and slices. This padding must be zeroed out or the file 489 is not valid */ 490 std::list<struct fat_arch *> sortedList; 491 for (unsigned i = 0; i < mArchCount; i++) 492 sortedList.push_back(mArchList + i); 493 494 sortedList.sort(^ bool (const struct fat_arch *arch1, const struct fat_arch *arch2) { return arch1->offset < arch2->offset; }); 495 496 const size_t universalHeaderEnd = mBase + sizeof(header) + (sizeof(fat_arch) * mArchCount); 497 size_t prevHeaderEnd = universalHeaderEnd; 498 size_t prevArchSize = 0, prevArchStart = 0; 499 500 for (auto iterator = sortedList.begin(); iterator != sortedList.end(); ++iterator) { 501 auto ret = mSizes.insert(std::pair<size_t, size_t>((*iterator)->offset, (*iterator)->size)); 502 if (ret.second == false) { 503 ::free(mArchList); 504 MacOSError::throwMe(errSecInternalError); // Something is wrong if the same size was encountered twice 505 } 506 507 size_t gapSize = (*iterator)->offset - prevHeaderEnd; 508 509 /* The size of the padding after the universal cannot be calculated to a fixed size */ 510 if (prevHeaderEnd != universalHeaderEnd) { 511 if (((*iterator)->align > MAX_ALIGN) || gapSize >= (1 << (*iterator)->align)) { 512 mSuspicious = true; 513 break; 514 } 515 } 516 517 // validate gap bytes in tasty page-sized chunks 518 CssmAutoPtr<uint8_t> gapBytes(Allocator::standard().malloc<uint8_t>(PAGE_SIZE)); 519 size_t off = 0; 520 while (off < gapSize) { 521 size_t want = min(gapSize - off, (size_t)PAGE_SIZE); 522 size_t got = fd.read(gapBytes, want, prevHeaderEnd + off); 523 off += got; 524 for (size_t x = 0; x < got; x++) { 525 if (gapBytes[x] != 0) { 526 mSuspicious = true; 527 break; 528 } 529 } 530 if (mSuspicious) 531 break; 532 } 533 if (off != gapSize) 534 mSuspicious = true; 535 if (mSuspicious) 536 break; 537 538 prevHeaderEnd = (*iterator)->offset + (*iterator)->size; 539 prevArchSize = (*iterator)->size; 540 prevArchStart = (*iterator)->offset; 541 } 542 543 /* If there is anything extra at the end of the file, reject this */ 544 if (!mSuspicious && (prevArchStart + prevArchSize != fd.fileSize())) 545 mSuspicious = true; 546 547 break; 548 } 549 case MH_MAGIC: 550 case MH_MAGIC_64: 551 mArchList = NULL; 552 mArchCount = 0; 553 mThinArch = Architecture(mheader.cputype, mheader.cpusubtype); 554 secdebug("macho", "%p is a thin file (%s)", this, mThinArch.name()); 555 break; 556 case MH_CIGAM: 557 case MH_CIGAM_64: 558 mArchList = NULL; 559 mArchCount = 0; 560 mThinArch = Architecture(flip(mheader.cputype), flip(mheader.cpusubtype)); 561 secdebug("macho", "%p is a thin file (%s)", this, mThinArch.name()); 562 break; 563 default: 564 UnixError::throwMe(ENOEXEC); 565 } 566} 567 568Universal::~Universal() 569{ 570 ::free(mArchList); 571} 572 573const size_t Universal::lengthOfSlice(size_t offset) const 574{ 575 auto ret = mSizes.find(offset); 576 if (ret == mSizes.end()) 577 MacOSError::throwMe(errSecInternalError); 578 return ret->second; 579} 580 581// 582// Get the "local" architecture from the fat file 583// Throws ENOEXEC if not found. 584// 585MachO *Universal::architecture() const 586{ 587 if (isUniversal()) 588 return findImage(bestNativeArch()); 589 else 590 return new MachO(*this, mBase, mLength); 591} 592 593size_t Universal::archOffset() const 594{ 595 if (isUniversal()) 596 return mBase + findArch(bestNativeArch())->offset; 597 else 598 return mBase; 599} 600 601 602// 603// Get the specified architecture from the fat file 604// Throws ENOEXEC if not found. 605// 606MachO *Universal::architecture(const Architecture &arch) const 607{ 608 if (isUniversal()) 609 return findImage(arch); 610 else if (mThinArch.matches(arch)) 611 return new MachO(*this, mBase); 612 else 613 UnixError::throwMe(ENOEXEC); 614} 615 616size_t Universal::archOffset(const Architecture &arch) const 617{ 618 if (isUniversal()) 619 return mBase + findArch(arch)->offset; 620 else if (mThinArch.matches(arch)) 621 return 0; 622 else 623 UnixError::throwMe(ENOEXEC); 624} 625 626size_t Universal::archLength(const Architecture &arch) const 627{ 628 if (isUniversal()) 629 return mBase + findArch(arch)->size; 630 else if (mThinArch.matches(arch)) 631 return this->fileSize(); 632 else 633 UnixError::throwMe(ENOEXEC); 634} 635 636// 637// Get the architecture at a specified offset from the fat file. 638// Throws an exception of the offset does not point at a Mach-O image. 639// 640MachO *Universal::architecture(size_t offset) const 641{ 642 if (isUniversal()) 643 return new MachO(*this, offset); 644 else if (offset == mBase) 645 return new MachO(*this); 646 else 647 UnixError::throwMe(ENOEXEC); 648} 649 650 651// 652// Locate an architecture from the fat file's list. 653// Throws ENOEXEC if not found. 654// 655const fat_arch *Universal::findArch(const Architecture &target) const 656{ 657 assert(isUniversal()); 658 const fat_arch *end = mArchList + mArchCount; 659 // exact match 660 for (const fat_arch *arch = mArchList; arch < end; ++arch) 661 if (arch->cputype == target.cpuType() 662 && arch->cpusubtype == target.cpuSubtype()) 663 return arch; 664 // match for generic model of main architecture 665 for (const fat_arch *arch = mArchList; arch < end; ++arch) 666 if (arch->cputype == target.cpuType() && arch->cpusubtype == 0) 667 return arch; 668 // match for any subarchitecture of the main architecture (questionable) 669 for (const fat_arch *arch = mArchList; arch < end; ++arch) 670 if (arch->cputype == target.cpuType()) 671 return arch; 672 // no match 673 UnixError::throwMe(ENOEXEC); // not found 674} 675 676MachO *Universal::findImage(const Architecture &target) const 677{ 678 const fat_arch *arch = findArch(target); 679 return new MachO(*this, mBase + arch->offset, arch->size); 680} 681 682 683// 684// Find the best-matching architecture for this fat file. 685// We pick the native architecture if it's available. 686// If it contains exactly one architecture, we take that. 687// Otherwise, we throw. 688// 689Architecture Universal::bestNativeArch() const 690{ 691 if (isUniversal()) { 692 // ask the NXArch API for our native architecture 693 const Architecture native = Architecture::local(); 694 if (fat_arch *match = NXFindBestFatArch(native.cpuType(), native.cpuSubtype(), mArchList, mArchCount)) 695 return *match; 696 // if the system can't figure it out, pick (arbitrarily) the first one 697 return mArchList[0]; 698 } else 699 return mThinArch; 700} 701 702// 703// List all architectures from the fat file's list. 704// 705void Universal::architectures(Architectures &archs) const 706{ 707 if (isUniversal()) { 708 for (unsigned n = 0; n < mArchCount; n++) 709 archs.insert(mArchList[n]); 710 } else { 711 auto_ptr<MachO> macho(architecture()); 712 archs.insert(macho->architecture()); 713 } 714} 715 716// 717// Quickly guess the Mach-O type of a file. 718// Returns type zero if the file isn't Mach-O or Universal. 719// Always looks at the start of the file, and does not change the file pointer. 720// 721uint32_t Universal::typeOf(FileDesc fd) 722{ 723 mach_header header; 724 int max_tries = 3; 725 if (fd.read(&header, sizeof(header), 0) != sizeof(header)) 726 return 0; 727 while (max_tries > 0) { 728 switch (header.magic) { 729 case MH_MAGIC: 730 case MH_MAGIC_64: 731 return header.filetype; 732 break; 733 case MH_CIGAM: 734 case MH_CIGAM_64: 735 return flip(header.filetype); 736 break; 737 case FAT_MAGIC: 738 case FAT_CIGAM: 739 { 740 const fat_arch *arch1 = 741 LowLevelMemoryUtilities::increment<fat_arch>(&header, sizeof(fat_header)); 742 if (fd.read(&header, sizeof(header), ntohl(arch1->offset)) != sizeof(header)) 743 return 0; 744 max_tries--; 745 continue; 746 } 747 default: 748 return 0; 749 } 750 } 751 return 0; 752} 753 754// 755// Strict validation 756// 757bool Universal::isSuspicious() const 758{ 759 if (mSuspicious) 760 return true; 761 Universal::Architectures archList; 762 architectures(archList); 763 for (Universal::Architectures::const_iterator it = archList.begin(); it != archList.end(); ++it) { 764 auto_ptr<MachO> macho(architecture(*it)); 765 if (macho->isSuspicious()) 766 return true; 767 } 768 return false; 769} 770 771 772} // Security 773