X-Git-Url: https://git.saurik.com/ldid.git/blobdiff_plain/1a982df59e2831119a352833d91e45aee31727ea..9b693b3477abaa13b2915411a8ba77f77fe67c25:/ldid.cpp diff --git a/ldid.cpp b/ldid.cpp index 6250a7d..1eacfb7 100644 --- a/ldid.cpp +++ b/ldid.cpp @@ -1,36 +1,206 @@ /* ldid - (Mach-O) Link-Loader Identity Editor - * Copyright (C) 2007-2012 Jay Freeman (saurik) + * Copyright (C) 2007-2015 Jay Freeman (saurik) */ -/* GNU Lesser General Public License, Version 3 {{{ */ -/* This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by +/* GNU Affero General Public License, Version 3 {{{ */ +/* + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. - * + * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License + * GNU Affero General Public License for more details. + + * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see . **/ /* }}} */ -#include "minimal/stdlib.h" -#include "minimal/string.h" -#include "minimal/mapping.h" - -#include "sha1.h" - +#include +#include #include +#include +#include +#include +#include +#include #include #include -#include -#include +#include +#include +#include +#include +#include +#include +#include + +#include #include +#include + +#ifndef LDID_NOSMIME +#include +#include +#include +#include +#endif + +#ifdef __APPLE__ +#include + +#define LDID_SHA1_DIGEST_LENGTH CC_SHA1_DIGEST_LENGTH +#define LDID_SHA1 CC_SHA1 +#define LDID_SHA1_CTX CC_SHA1_CTX +#define LDID_SHA1_Init CC_SHA1_Init +#define LDID_SHA1_Update CC_SHA1_Update +#define LDID_SHA1_Final CC_SHA1_Final + +#define LDID_SHA256_DIGEST_LENGTH CC_SHA256_DIGEST_LENGTH +#define LDID_SHA256 CC_SHA256 +#define LDID_SHA256_CTX CC_SHA256_CTX +#define LDID_SHA256_Init CC_SHA256_Init +#define LDID_SHA256_Update CC_SHA256_Update +#define LDID_SHA256_Final CC_SHA256_Final +#else +#include + +#define LDID_SHA1_DIGEST_LENGTH SHA_DIGEST_LENGTH +#define LDID_SHA1 SHA1 +#define LDID_SHA1_CTX SHA_CTX +#define LDID_SHA1_Init SHA1_Init +#define LDID_SHA1_Update SHA1_Update +#define LDID_SHA1_Final SHA1_Final + +#define LDID_SHA256_DIGEST_LENGTH SHA256_DIGEST_LENGTH +#define LDID_SHA256 SHA256 +#define LDID_SHA256_CTX SHA256_CTX +#define LDID_SHA256_Init SHA256_Init +#define LDID_SHA256_Update SHA256_Update +#define LDID_SHA256_Final SHA256_Final +#endif + +#ifndef LDID_NOPLIST +#include +#endif + +#include "ldid.hpp" + +#define _assert___(line) \ + #line +#define _assert__(line) \ + _assert___(line) + +#ifdef __EXCEPTIONS +#define _assert_(expr, format, ...) \ + do if (!(expr)) { \ + fprintf(stderr, "%s(%u): _assert(): " format "\n", __FILE__, __LINE__, ## __VA_ARGS__); \ + throw __FILE__ "(" _assert__(__LINE__) "): _assert(" #expr ")"; \ + } while (false) +#else +// XXX: this is not acceptable +#define _assert_(expr, format, ...) \ + do if (!(expr)) { \ + fprintf(stderr, "%s(%u): _assert(): " format "\n", __FILE__, __LINE__, ## __VA_ARGS__); \ + exit(-1); \ + } while (false) +#endif + +#define _assert(expr) \ + _assert_(expr, "%s", #expr) + +#define _syscall(expr, ...) [&] { for (;;) { \ + auto _value(expr); \ + if ((long) _value != -1) \ + return _value; \ + int error(errno); \ + if (error == EINTR) \ + continue; \ + /* XXX: EINTR is included in this list to fix g++ */ \ + for (auto success : (long[]) {EINTR, __VA_ARGS__}) \ + if (error == success) \ + return (decltype(expr)) -success; \ + _assert_(false, "errno=%u", error); \ +} }() + +#define _trace() \ + fprintf(stderr, "_trace(%s:%u): %s\n", __FILE__, __LINE__, __FUNCTION__) + +#define _not(type) \ + ((type) ~ (type) 0) + +#define _packed \ + __attribute__((packed)) + +template +struct Iterator_ { + typedef typename Type_::const_iterator Result; +}; + +#define _foreach(item, list) \ + for (bool _stop(true); _stop; ) \ + for (const __typeof__(list) &_list = (list); _stop; _stop = false) \ + for (Iterator_<__typeof__(list)>::Result _item = _list.begin(); _item != _list.end(); ++_item) \ + for (bool _suck(true); _suck; _suck = false) \ + for (const __typeof__(*_item) &item = *_item; _suck; _suck = false) + +class _Scope { +}; + +template +class Scope : + public _Scope +{ + private: + Function_ function_; + + public: + Scope(const Function_ &function) : + function_(function) + { + } + + ~Scope() { + function_(); + } +}; + +template +Scope _scope(const Function_ &function) { + return Scope(function); +} + +#define _scope__(counter, function) \ + __attribute__((__unused__)) \ + const _Scope &_scope ## counter(_scope([&]function)) +#define _scope_(counter, function) \ + _scope__(counter, function) +#define _scope(function) \ + _scope_(__COUNTER__, function) + +#define CPU_ARCH_MASK uint32_t(0xff000000) +#define CPU_ARCH_ABI64 uint32_t(0x01000000) + +#define CPU_TYPE_ANY uint32_t(-1) +#define CPU_TYPE_VAX uint32_t( 1) +#define CPU_TYPE_MC680x0 uint32_t( 6) +#define CPU_TYPE_X86 uint32_t( 7) +#define CPU_TYPE_MC98000 uint32_t(10) +#define CPU_TYPE_HPPA uint32_t(11) +#define CPU_TYPE_ARM uint32_t(12) +#define CPU_TYPE_MC88000 uint32_t(13) +#define CPU_TYPE_SPARC uint32_t(14) +#define CPU_TYPE_I860 uint32_t(15) +#define CPU_TYPE_POWERPC uint32_t(18) + +#define CPU_TYPE_I386 CPU_TYPE_X86 + +#define CPU_TYPE_ARM64 (CPU_ARCH_ABI64 | CPU_TYPE_ARM) +#define CPU_TYPE_POWERPC64 (CPU_ARCH_ABI64 | CPU_TYPE_POWERPC) +#define CPU_TYPE_X86_64 (CPU_ARCH_ABI64 | CPU_TYPE_X86) struct fat_header { uint32_t magic; @@ -66,6 +236,7 @@ struct mach_header { #define MH_DYLDLINK 0x4 +#define MH_OBJECT 0x1 #define MH_EXECUTE 0x2 #define MH_DYLIB 0x6 #define MH_BUNDLE 0x8 @@ -91,6 +262,17 @@ struct load_command { #define LC_ENCRYPTION_INFO uint32_t(0x21) #define LC_DYLD_INFO uint32_t(0x22) #define LC_DYLD_INFO_ONLY uint32_t(0x22 | LC_REQ_DYLD) +#define LC_ENCRYPTION_INFO_64 uint32_t(0x2c) + +union Version { + struct { + uint8_t patch; + uint8_t minor; + uint16_t major; + } _packed; + + uint32_t value; +}; struct dylib { uint32_t name; @@ -259,6 +441,7 @@ struct section_64 { uint32_t flags; uint32_t reserved1; uint32_t reserved2; + uint32_t reserved3; } _packed; struct linkedit_data_command { @@ -276,13 +459,69 @@ struct encryption_info_command { uint32_t cryptid; } _packed; -uint16_t Swap_(uint16_t value) { +#define BIND_OPCODE_MASK 0xf0 +#define BIND_IMMEDIATE_MASK 0x0f +#define BIND_OPCODE_DONE 0x00 +#define BIND_OPCODE_SET_DYLIB_ORDINAL_IMM 0x10 +#define BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB 0x20 +#define BIND_OPCODE_SET_DYLIB_SPECIAL_IMM 0x30 +#define BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM 0x40 +#define BIND_OPCODE_SET_TYPE_IMM 0x50 +#define BIND_OPCODE_SET_ADDEND_SLEB 0x60 +#define BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB 0x70 +#define BIND_OPCODE_ADD_ADDR_ULEB 0x80 +#define BIND_OPCODE_DO_BIND 0x90 +#define BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB 0xa0 +#define BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED 0xb0 +#define BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB 0xc0 + +static std::streamsize read(std::streambuf &stream, void *data, size_t size) { + auto writ(stream.sgetn(static_cast(data), size)); + _assert(writ >= 0); + return writ; +} + +static inline void get(std::streambuf &stream, void *data, size_t size) { + _assert(read(stream, data, size) == size); +} + +static inline void put(std::streambuf &stream, const void *data, size_t size) { + _assert(stream.sputn(static_cast(data), size) == size); +} + +static size_t most(std::streambuf &stream, void *data, size_t size) { + size_t total(size); + while (size > 0) + if (auto writ = read(stream, data, size)) + size -= writ; + else break; + return total - size; +} + +static inline void pad(std::streambuf &stream, size_t size) { + char padding[size]; + memset(padding, 0, size); + put(stream, padding, size); +} + +template +Type_ Align(Type_ value, size_t align) { + value += align - 1; + value /= align; + value *= align; + return value; +} + +static const uint8_t PageShift_(0x0c); +static const uint32_t PageSize_(1 << PageShift_); + +static inline uint16_t Swap_(uint16_t value) { return ((value >> 8) & 0x00ff) | ((value << 8) & 0xff00); } -uint32_t Swap_(uint32_t value) { +static inline uint32_t Swap_(uint32_t value) { value = ((value >> 8) & 0x00ff00ff) | ((value << 8) & 0xff00ff00); value = ((value >> 16) & 0x0000ffff) | @@ -290,65 +529,84 @@ uint32_t Swap_(uint32_t value) { return value; } -int16_t Swap_(int16_t value) { +static inline uint64_t Swap_(uint64_t value) { + value = (value & 0x00000000ffffffff) << 32 | (value & 0xffffffff00000000) >> 32; + value = (value & 0x0000ffff0000ffff) << 16 | (value & 0xffff0000ffff0000) >> 16; + value = (value & 0x00ff00ff00ff00ff) << 8 | (value & 0xff00ff00ff00ff00) >> 8; + return value; +} + +static inline int16_t Swap_(int16_t value) { return Swap_(static_cast(value)); } -int32_t Swap_(int32_t value) { +static inline int32_t Swap_(int32_t value) { return Swap_(static_cast(value)); } -bool little_(true); +static inline int64_t Swap_(int64_t value) { + return Swap_(static_cast(value)); +} + +static bool little_(true); + +static inline uint16_t Swap(uint16_t value) { + return little_ ? Swap_(value) : value; +} -uint16_t Swap(uint16_t value) { +static inline uint32_t Swap(uint32_t value) { return little_ ? Swap_(value) : value; } -uint32_t Swap(uint32_t value) { +static inline uint64_t Swap(uint64_t value) { return little_ ? Swap_(value) : value; } -int16_t Swap(int16_t value) { +static inline int16_t Swap(int16_t value) { return Swap(static_cast(value)); } -int32_t Swap(int32_t value) { +static inline int32_t Swap(int32_t value) { return Swap(static_cast(value)); } -template -class Pointer; - -class Data { - private: - void *base_; - size_t size_; +static inline int64_t Swap(int64_t value) { + return Swap(static_cast(value)); +} +class Swapped { protected: bool swapped_; - public: - Data(void *base, size_t size) : - base_(base), - size_(size), + Swapped() : swapped_(false) { } - uint16_t Swap(uint16_t value) const { - return swapped_ ? Swap_(value) : value; + public: + Swapped(bool swapped) : + swapped_(swapped) + { } - uint32_t Swap(uint32_t value) const { + template + Type_ Swap(Type_ value) const { return swapped_ ? Swap_(value) : value; } +}; - int16_t Swap(int16_t value) const { - return Swap(static_cast(value)); - } +class Data : + public Swapped +{ + private: + void *base_; + size_t size_; - int32_t Swap(int32_t value) const { - return Swap(static_cast(value)); + public: + Data(void *base, size_t size) : + base_(base), + size_(size) + { } void *GetBase() const { @@ -404,18 +662,30 @@ class MachHeader : ); } + bool Bits64() const { + return bits64_; + } + struct mach_header *operator ->() const { return mach_header_; } + operator struct mach_header *() const { + return mach_header_; + } + uint32_t GetCPUType() const { return Swap(mach_header_->cputype); } - uint16_t GetCPUSubtype() const { + uint32_t GetCPUSubtype() const { return Swap(mach_header_->cpusubtype) & 0xff; } + struct load_command *GetLoadCommand() const { + return load_command_; + } + std::vector GetLoadCommands() const { std::vector load_commands; @@ -428,85 +698,30 @@ class MachHeader : return load_commands; } - std::vector GetSegments(const char *segment_name) const { - std::vector segment_commands; - - _foreach (load_command, GetLoadCommands()) { - if (Swap(load_command->cmd) == LC_SEGMENT) { - segment_command *segment_command = reinterpret_cast(load_command); - if (strncmp(segment_command->segname, segment_name, 16) == 0) - segment_commands.push_back(segment_command); - } - } - - return segment_commands; - } - - std::vector GetSegments64(const char *segment_name) { - std::vector segment_commands; - - _foreach (load_command, GetLoadCommands()) { - if (Swap(load_command->cmd) == LC_SEGMENT_64) { - segment_command_64 *segment_command = reinterpret_cast(load_command); - if (strncmp(segment_command->segname, segment_name, 16) == 0) - segment_commands.push_back(segment_command); - } - } - - return segment_commands; - } - - std::vector
GetSections(const char *segment_name, const char *section_name) const { - std::vector
sections; - - _foreach (segment, GetSegments(segment_name)) { - section *section = (struct section *) (segment + 1); - - uint32_t sect; - for (sect = 0; sect != Swap(segment->nsects); ++sect) { - if (strncmp(section->sectname, section_name, 16) == 0) - sections.push_back(section); - ++section; - } - } - - return sections; - } - - template - Pointer GetPointer(uint32_t address, const char *segment_name = NULL) const { - load_command *load_command = (struct load_command *) (mach_header_ + 1); - uint32_t cmd; - - for (cmd = 0; cmd != Swap(mach_header_->ncmds); ++cmd) { - if (Swap(load_command->cmd) == LC_SEGMENT) { - segment_command *segment_command = (struct segment_command *) load_command; - if (segment_name != NULL && strncmp(segment_command->segname, segment_name, 16) != 0) - goto next_command; - - section *sections = (struct section *) (segment_command + 1); - - uint32_t sect; - for (sect = 0; sect != Swap(segment_command->nsects); ++sect) { - section *section = §ions[sect]; - //printf("%s %u %p %p %u\n", segment_command->segname, sect, address, section->addr, section->size); - if (address >= Swap(section->addr) && address < Swap(section->addr) + Swap(section->size)) { - //printf("0x%.8x %s\n", address, segment_command->segname); - return Pointer(this, reinterpret_cast(address - Swap(section->addr) + Swap(section->offset) + (char *) mach_header_)); - } - } + void ForSection(const ldid::Functor &code) const { + _foreach (load_command, GetLoadCommands()) + switch (Swap(load_command->cmd)) { + case LC_SEGMENT: { + auto segment(reinterpret_cast(load_command)); + code(segment->segname, NULL, GetOffset(segment->fileoff), segment->filesize); + auto section(reinterpret_cast(segment + 1)); + for (uint32_t i(0), e(Swap(segment->nsects)); i != e; ++i, ++section) + code(segment->segname, section->sectname, GetOffset(segment->fileoff + section->offset), section->size); + } break; + + case LC_SEGMENT_64: { + auto segment(reinterpret_cast(load_command)); + code(segment->segname, NULL, GetOffset(segment->fileoff), segment->filesize); + auto section(reinterpret_cast(segment + 1)); + for (uint32_t i(0), e(Swap(segment->nsects)); i != e; ++i, ++section) + code(segment->segname, section->sectname, GetOffset(segment->fileoff + section->offset), section->size); + } break; } - - next_command: - load_command = (struct load_command *) ((char *) load_command + Swap(load_command->cmdsize)); - } - - return Pointer(this); } template - Pointer GetOffset(uint32_t offset) { - return Pointer(this, reinterpret_cast(offset + (uint8_t *) mach_header_)); + Target_ *GetOffset(uint32_t offset) const { + return reinterpret_cast(offset + (uint8_t *) mach_header_); } }; @@ -571,53 +786,31 @@ class FatHeader : struct fat_header *operator ->() const { return fat_header_; } -}; - -FatHeader Map(const char *path, bool ro = false) { - size_t size; - void *base(map(path, 0, _not(size_t), &size, ro)); - return FatHeader(base, size); -} - -template -class Pointer { - private: - const MachHeader *framework_; - const Target_ *pointer_; - - public: - Pointer(const MachHeader *framework = NULL, const Target_ *pointer = NULL) : - framework_(framework), - pointer_(pointer) - { - } - - operator const Target_ *() const { - return pointer_; - } - const Target_ *operator ->() const { - return pointer_; + operator struct fat_header *() const { + return fat_header_; } +}; - Pointer &operator ++() { - ++pointer_; - return *this; - } +#define CSMAGIC_REQUIREMENT uint32_t(0xfade0c00) +#define CSMAGIC_REQUIREMENTS uint32_t(0xfade0c01) +#define CSMAGIC_CODEDIRECTORY uint32_t(0xfade0c02) +#define CSMAGIC_EMBEDDED_SIGNATURE uint32_t(0xfade0cc0) +#define CSMAGIC_EMBEDDED_SIGNATURE_OLD uint32_t(0xfade0b02) +#define CSMAGIC_EMBEDDED_ENTITLEMENTS uint32_t(0xfade7171) +#define CSMAGIC_DETACHED_SIGNATURE uint32_t(0xfade0cc1) +#define CSMAGIC_BLOBWRAPPER uint32_t(0xfade0b01) - template - Value_ Swap(Value_ value) { - return framework_->Swap(value); - } -}; +#define CSSLOT_CODEDIRECTORY uint32_t(0x00000) +#define CSSLOT_INFOSLOT uint32_t(0x00001) +#define CSSLOT_REQUIREMENTS uint32_t(0x00002) +#define CSSLOT_RESOURCEDIR uint32_t(0x00003) +#define CSSLOT_APPLICATION uint32_t(0x00004) +#define CSSLOT_ENTITLEMENTS uint32_t(0x00005) -#define CSMAGIC_CODEDIRECTORY uint32_t(0xfade0c02) -#define CSMAGIC_EMBEDDED_SIGNATURE uint32_t(0xfade0cc0) -#define CSMAGIC_ENTITLEMENTS uint32_t(0xfade7171) +#define CSSLOT_SIGNATURESLOT uint32_t(0x10000) -#define CSSLOT_CODEDIRECTORY uint32_t(0) -#define CSSLOT_REQUIREMENTS uint32_t(2) -#define CSSLOT_ENTITLEMENTS uint32_t(5) +#define CS_HASHTYPE_SHA1 1 struct BlobIndex { uint32_t type; @@ -636,7 +829,6 @@ struct SuperBlob { } _packed; struct CodeDirectory { - struct Blob blob; uint32_t version; uint32_t flags; uint32_t hashOffset; @@ -649,337 +841,1713 @@ struct CodeDirectory { uint8_t spare1; uint8_t pageSize; uint32_t spare2; + uint32_t scatterOffset; + uint32_t teamIDOffset; + uint32_t spare3; + uint64_t codeLimit64; } _packed; +#ifndef LDID_NOFLAGT extern "C" uint32_t hash(uint8_t *k, uint32_t length, uint32_t initval); +#endif + +static void sha1(uint8_t *hash, const void *data, size_t size) { + LDID_SHA1(static_cast(data), size, hash); +} -void sha1(uint8_t *hash, uint8_t *data, size_t size) { - SHA1Context context; - SHA1Reset(&context); - SHA1Input(&context, data, size); - SHA1Result(&context, hash); +static void sha1(std::vector &hash, const void *data, size_t size) { + hash.resize(LDID_SHA1_DIGEST_LENGTH); + sha1(reinterpret_cast(hash.data()), data, size); } struct CodesignAllocation { - uint32_t type_; - uint16_t subtype_; - size_t size_; + FatMachHeader mach_header_; + uint32_t offset_; + uint32_t size_; + uint32_t limit_; + uint32_t alloc_; + uint32_t align_; + + CodesignAllocation(FatMachHeader mach_header, size_t offset, size_t size, size_t limit, size_t alloc, size_t align) : + mach_header_(mach_header), + offset_(offset), + size_(size), + limit_(limit), + alloc_(alloc), + align_(align) + { + } +}; - CodesignAllocation(uint32_t type, uint16_t subtype, size_t size) : - type_(type), - subtype_(subtype), - size_(size) +#ifndef LDID_NOTOOLS +class File { + private: + int file_; + + public: + File() : + file_(-1) { } + + ~File() { + if (file_ != -1) + _syscall(close(file_)); + } + + void open(const char *path, int flags) { + _assert(file_ == -1); + file_ = _syscall(::open(path, flags)); + } + + int file() const { + return file_; + } }; -int main(int argc, const char *argv[]) { - union { - uint16_t word; - uint8_t byte[2]; - } endian = {1}; +class Map { + private: + File file_; + void *data_; + size_t size_; - little_ = endian.byte[0]; + void clear() { + if (data_ == NULL) + return; + _syscall(munmap(data_, size_)); + data_ = NULL; + size_ = 0; + } - bool flag_R(false); - bool flag_r(false); + public: + Map() : + data_(NULL), + size_(0) + { + } - bool flag_t(false); - bool flag_p(false); - bool flag_u(false); - bool flag_e(false); + Map(const std::string &path, int oflag, int pflag, int mflag) : + Map() + { + open(path, oflag, pflag, mflag); + } - bool flag_T(false); + Map(const std::string &path, bool edit) : + Map() + { + open(path, edit); + } - bool flag_S(false); - bool flag_s(false); + ~Map() { + clear(); + } - bool flag_O(false); + bool empty() const { + return data_ == NULL; + } - bool flag_D(false); - bool flag_d(false); + void open(const std::string &path, int oflag, int pflag, int mflag) { + clear(); - bool flag_A(false); - bool flag_a(false); + file_.open(path.c_str(), oflag); + int file(file_.file()); - uint32_t flag_CPUType(_not(uint32_t)); - uint32_t flag_CPUSubtype(_not(uint32_t)); + struct stat stat; + _syscall(fstat(file, &stat)); + size_ = stat.st_size; - bool timeh(false); - uint32_t timev(0); + data_ = _syscall(mmap(NULL, size_, pflag, mflag, file, 0)); + } - const void *xmld(NULL); - size_t xmls(0); + void open(const std::string &path, bool edit) { + if (edit) + open(path, O_RDWR, PROT_READ | PROT_WRITE, MAP_SHARED); + else + open(path, O_RDONLY, PROT_READ, MAP_PRIVATE); + } - uintptr_t noffset(_not(uintptr_t)); - uintptr_t woffset(_not(uintptr_t)); + void *data() const { + return data_; + } - std::vector files; + size_t size() const { + return size_; + } - if (argc == 1) { - fprintf(stderr, "usage: %s -S[entitlements.xml] \n", argv[0]); - fprintf(stderr, " %s -e MobileSafari\n", argv[0]); - fprintf(stderr, " %s -S cat\n", argv[0]); - fprintf(stderr, " %s -Stfp.xml gdb\n", argv[0]); - exit(0); + operator std::string() const { + return std::string(static_cast(data_), size_); } +}; +#endif - for (int argi(1); argi != argc; ++argi) - if (argv[argi][0] != '-') - files.push_back(argv[argi]); - else switch (argv[argi][1]) { - case 'R': flag_R = true; break; - case 'r': flag_r = true; break; +namespace ldid { - case 't': flag_t = true; break; - case 'u': flag_u = true; break; - case 'p': flag_p = true; break; - case 'e': flag_e = true; break; - case 'O': flag_O = true; break; +std::string Analyze(const void *data, size_t size) { + std::string entitlements; - case 'D': flag_D = true; break; - case 'd': flag_d = true; break; + FatHeader fat_header(const_cast(data), size); + _foreach (mach_header, fat_header.GetMachHeaders()) + _foreach (load_command, mach_header.GetLoadCommands()) + if (mach_header.Swap(load_command->cmd) == LC_CODE_SIGNATURE) { + auto signature(reinterpret_cast(load_command)); + auto offset(mach_header.Swap(signature->dataoff)); + auto pointer(reinterpret_cast(mach_header.GetBase()) + offset); + auto super(reinterpret_cast(pointer)); - case 'a': flag_a = true; break; + for (size_t index(0); index != Swap(super->count); ++index) + if (Swap(super->index[index].type) == CSSLOT_ENTITLEMENTS) { + auto begin(Swap(super->index[index].offset)); + auto blob(reinterpret_cast(pointer + begin)); + auto writ(Swap(blob->length) - sizeof(*blob)); + + if (entitlements.empty()) + entitlements.assign(reinterpret_cast(blob + 1), writ); + else + _assert(entitlements.compare(0, entitlements.size(), reinterpret_cast(blob + 1), writ) == 0); + } + } - case 'A': - flag_A = true; - if (argv[argi][2] != '\0') { - const char *cpu = argv[argi] + 2; - const char *colon = strchr(cpu, ':'); - _assert(colon != NULL); - char *arge; - flag_CPUType = strtoul(cpu, &arge, 0); - _assert(arge == colon); - flag_CPUSubtype = strtoul(colon + 1, &arge, 0); - _assert(arge == argv[argi] + strlen(argv[argi])); - } - break; + return entitlements; +} - case 's': - _assert(!flag_S); - flag_s = true; - break; +static void Allocate(const void *idata, size_t isize, std::streambuf &output, const Functor &allocate, const Functor &save) { + FatHeader source(const_cast(idata), isize); - case 'S': - _assert(!flag_s); - flag_S = true; - if (argv[argi][2] != '\0') { - const char *xml = argv[argi] + 2; - xmld = map(xml, 0, _not(size_t), &xmls, true); - } - break; + size_t offset(0); + if (source.IsFat()) + offset += sizeof(fat_header) + sizeof(fat_arch) * source.Swap(source->nfat_arch); - case 'T': { - flag_T = true; - if (argv[argi][2] == '-') - timeh = true; - else { - char *arge; - timev = strtoul(argv[argi] + 2, &arge, 0); - _assert(arge == argv[argi] + strlen(argv[argi])); - } - } break; + std::vector allocations; + _foreach (mach_header, source.GetMachHeaders()) { + struct linkedit_data_command *signature(NULL); + struct symtab_command *symtab(NULL); + + _foreach (load_command, mach_header.GetLoadCommands()) { + uint32_t cmd(mach_header.Swap(load_command->cmd)); + if (false); + else if (cmd == LC_CODE_SIGNATURE) + signature = reinterpret_cast(load_command); + else if (cmd == LC_SYMTAB) + symtab = reinterpret_cast(load_command); + } - case 'n': { - char *arge; - noffset = strtoul(argv[argi] + 2, &arge, 0); - _assert(arge == argv[argi] + strlen(argv[argi])); - } break; + size_t size; + if (signature == NULL) + size = mach_header.GetSize(); + else { + size = mach_header.Swap(signature->dataoff); + _assert(size <= mach_header.GetSize()); + } - case 'w': { - char *arge; - woffset = strtoul(argv[argi] + 2, &arge, 0); - _assert(arge == argv[argi] + strlen(argv[argi])); - } break; + if (symtab != NULL) { + auto end(mach_header.Swap(symtab->stroff) + mach_header.Swap(symtab->strsize)); + _assert(end <= size); + _assert(end >= size - 0x10); + size = end; + } + size_t alloc(allocate(mach_header, size)); + + auto *fat_arch(mach_header.GetFatArch()); + uint32_t align; + + if (fat_arch != NULL) + align = source.Swap(fat_arch->align); + else switch (mach_header.GetCPUType()) { + case CPU_TYPE_POWERPC: + case CPU_TYPE_POWERPC64: + case CPU_TYPE_X86: + case CPU_TYPE_X86_64: + align = 0xc; + break; + case CPU_TYPE_ARM: + case CPU_TYPE_ARM64: + align = 0xe; + break; default: - goto usage; - break; + align = 0x0; + break; } - if (files.empty()) usage: { - exit(0); - } + offset = Align(offset, 1 << align); - size_t filei(0), filee(0); - _foreach (file, files) try { - const char *path(file.c_str()); - const char *base = strrchr(path, '/'); - char *temp(NULL), *dir; + uint32_t limit(size); + if (alloc != 0) + limit = Align(limit, 0x10); - if (base != NULL) - dir = strndup_(path, base++ - path + 1); - else { - dir = strdup(""); - base = path; - } + allocations.push_back(CodesignAllocation(mach_header, offset, size, limit, alloc, align)); + offset += size + alloc; + offset = Align(offset, 0x10); + } - if (flag_r) { - uint32_t clip(0); { - FatHeader fat_header(Map(path)); - _foreach (mach_header, fat_header.GetMachHeaders()) { - mach_header->flags = mach_header.Swap(mach_header.Swap(mach_header->flags) | MH_DYLDLINK); - - uint32_t size(_not(uint32_t)); { - _foreach (load_command, mach_header.GetLoadCommands()) { - switch (mach_header.Swap(load_command->cmd)) { - case LC_CODE_SIGNATURE: { - struct linkedit_data_command *signature = reinterpret_cast(load_command); - memset(reinterpret_cast(mach_header.GetBase()) + mach_header.Swap(signature->dataoff), 0, mach_header.Swap(signature->datasize)); - memset(signature, 0, sizeof(struct linkedit_data_command)); - - mach_header->ncmds = mach_header.Swap(mach_header.Swap(mach_header->ncmds) - 1); - mach_header->sizeofcmds = mach_header.Swap(uint32_t(mach_header.Swap(mach_header->sizeofcmds) - sizeof(struct linkedit_data_command))); - } break; - - case LC_SYMTAB: { - struct symtab_command *symtab = reinterpret_cast(load_command); - size = mach_header.Swap(symtab->stroff) + mach_header.Swap(symtab->strsize); - } break; - } - } - } + size_t position(0); + + if (source.IsFat()) { + fat_header fat_header; + fat_header.magic = Swap(FAT_MAGIC); + fat_header.nfat_arch = Swap(uint32_t(allocations.size())); + put(output, &fat_header, sizeof(fat_header)); + position += sizeof(fat_header); + + _foreach (allocation, allocations) { + auto &mach_header(allocation.mach_header_); + + fat_arch fat_arch; + fat_arch.cputype = Swap(mach_header->cputype); + fat_arch.cpusubtype = Swap(mach_header->cpusubtype); + fat_arch.offset = Swap(allocation.offset_); + fat_arch.size = Swap(allocation.limit_ + allocation.alloc_); + fat_arch.align = Swap(allocation.align_); + put(output, &fat_arch, sizeof(fat_arch)); + position += sizeof(fat_arch); + } + } - _assert(size != _not(uint32_t)); + _foreach (allocation, allocations) { + auto &mach_header(allocation.mach_header_); - _foreach (segment, const_cast(mach_header).GetSegments("__LINKEDIT")) { - segment->filesize -= mach_header.GetSize() - size; + pad(output, allocation.offset_ - position); + position = allocation.offset_; - if (fat_arch *fat_arch = mach_header.GetFatArch()) { - fat_arch->size = fat_header.Swap(size); - clip = std::max(clip, fat_header.Swap(fat_arch->offset) + size); - } else - clip = std::max(clip, size); - } + std::vector commands; - _foreach (segment, const_cast(mach_header).GetSegments64("__LINKEDIT")) { - segment->filesize -= mach_header.GetSize() - size; + _foreach (load_command, mach_header.GetLoadCommands()) { + std::string copy(reinterpret_cast(load_command), load_command->cmdsize); - if (fat_arch *fat_arch = mach_header.GetFatArch()) { - fat_arch->size = fat_header.Swap(size); - clip = std::max(clip, fat_header.Swap(fat_arch->offset) + size); - } else - clip = std::max(clip, size); - } - } + switch (mach_header.Swap(load_command->cmd)) { + case LC_CODE_SIGNATURE: + continue; + break; + + case LC_SEGMENT: { + auto segment_command(reinterpret_cast(©[0])); + if (strncmp(segment_command->segname, "__LINKEDIT", 16) != 0) + break; + size_t size(mach_header.Swap(allocation.limit_ + allocation.alloc_ - mach_header.Swap(segment_command->fileoff))); + segment_command->filesize = size; + segment_command->vmsize = Align(size, 1 << allocation.align_); + } break; + + case LC_SEGMENT_64: { + auto segment_command(reinterpret_cast(©[0])); + if (strncmp(segment_command->segname, "__LINKEDIT", 16) != 0) + break; + size_t size(mach_header.Swap(allocation.limit_ + allocation.alloc_ - mach_header.Swap(segment_command->fileoff))); + segment_command->filesize = size; + segment_command->vmsize = Align(size, 1 << allocation.align_); + } break; } - _assert(clip != 0); - _syscall(truncate(path, clip)); + commands.push_back(copy); } - if (flag_S) { - asprintf(&temp, "%s.%s.cs", dir, base); - const char *allocate = getenv("CODESIGN_ALLOCATE"); - if (allocate == NULL) - allocate = "codesign_allocate"; - - std::vector allocations; { - FatHeader fat_header(Map(path)); - _foreach (mach_header, fat_header.GetMachHeaders()) { - mach_header->flags = mach_header.Swap(mach_header.Swap(mach_header->flags) | MH_DYLDLINK); - - size_t size(_not(size_t)); { - _foreach (load_command, mach_header.GetLoadCommands()) { - uint32_t cmd(mach_header.Swap(load_command->cmd)); - if (cmd == LC_CODE_SIGNATURE) { - struct linkedit_data_command *signature = reinterpret_cast(load_command); - size = mach_header.Swap(signature->dataoff); - _assert(size < mach_header.GetSize()); - break; - } - } + if (allocation.alloc_ != 0) { + linkedit_data_command signature; + signature.cmd = mach_header.Swap(LC_CODE_SIGNATURE); + signature.cmdsize = mach_header.Swap(uint32_t(sizeof(signature))); + signature.dataoff = mach_header.Swap(allocation.limit_); + signature.datasize = mach_header.Swap(allocation.alloc_); + commands.push_back(std::string(reinterpret_cast(&signature), sizeof(signature))); + } + + size_t begin(position); + + uint32_t after(0); + _foreach(command, commands) + after += command.size(); + + std::stringbuf altern; + + struct mach_header header(*mach_header); + header.ncmds = mach_header.Swap(uint32_t(commands.size())); + header.sizeofcmds = mach_header.Swap(after); + put(output, &header, sizeof(header)); + put(altern, &header, sizeof(header)); + position += sizeof(header); + + if (mach_header.Bits64()) { + auto pad(mach_header.Swap(uint32_t(0))); + put(output, &pad, sizeof(pad)); + put(altern, &pad, sizeof(pad)); + position += sizeof(pad); + } + + _foreach(command, commands) { + put(output, command.data(), command.size()); + put(altern, command.data(), command.size()); + position += command.size(); + } + + uint32_t before(mach_header.Swap(mach_header->sizeofcmds)); + if (before > after) { + pad(output, before - after); + pad(altern, before - after); + position += before - after; + } + + auto top(reinterpret_cast(mach_header.GetBase())); + + std::string overlap(altern.str()); + overlap.append(top + overlap.size(), Align(overlap.size(), 0x1000) - overlap.size()); + + put(output, top + (position - begin), allocation.size_ - (position - begin)); + position = begin + allocation.size_; + + pad(output, allocation.limit_ - allocation.size_); + position += allocation.limit_ - allocation.size_; + + size_t saved(save(mach_header, output, allocation.limit_, overlap, top)); + if (allocation.alloc_ > saved) + pad(output, allocation.alloc_ - saved); + else + _assert(allocation.alloc_ == saved); + position += allocation.alloc_; + } +} + +} + +typedef std::map Blobs; + +static void insert(Blobs &blobs, uint32_t slot, const std::stringbuf &buffer) { + auto value(buffer.str()); + std::swap(blobs[slot], value); +} + +static const std::string &insert(Blobs &blobs, uint32_t slot, uint32_t magic, const std::stringbuf &buffer) { + auto value(buffer.str()); + Blob blob; + blob.magic = Swap(magic); + blob.length = Swap(uint32_t(sizeof(blob) + value.size())); + value.insert(0, reinterpret_cast(&blob), sizeof(blob)); + auto &save(blobs[slot]); + std::swap(save, value); + return save; +} + +static size_t put(std::streambuf &output, uint32_t magic, const Blobs &blobs) { + size_t total(0); + _foreach (blob, blobs) + total += blob.second.size(); + + struct SuperBlob super; + super.blob.magic = Swap(magic); + super.blob.length = Swap(uint32_t(sizeof(SuperBlob) + blobs.size() * sizeof(BlobIndex) + total)); + super.count = Swap(uint32_t(blobs.size())); + put(output, &super, sizeof(super)); + + size_t offset(sizeof(SuperBlob) + sizeof(BlobIndex) * blobs.size()); + + _foreach (blob, blobs) { + BlobIndex index; + index.type = Swap(blob.first); + index.offset = Swap(uint32_t(offset)); + put(output, &index, sizeof(index)); + offset += blob.second.size(); + } + + _foreach (blob, blobs) + put(output, blob.second.data(), blob.second.size()); + + return offset; +} + +#ifndef LDID_NOSMIME +class Buffer { + private: + BIO *bio_; + + public: + Buffer(BIO *bio) : + bio_(bio) + { + _assert(bio_ != NULL); + } + + Buffer() : + bio_(BIO_new(BIO_s_mem())) + { + } + + Buffer(const char *data, size_t size) : + Buffer(BIO_new_mem_buf(const_cast(data), size)) + { + } + + Buffer(const std::string &data) : + Buffer(data.data(), data.size()) + { + } + + Buffer(PKCS7 *pkcs) : + Buffer() + { + _assert(i2d_PKCS7_bio(bio_, pkcs) != 0); + } + + ~Buffer() { + BIO_free_all(bio_); + } + + operator BIO *() const { + return bio_; + } + + explicit operator std::string() const { + char *data; + auto size(BIO_get_mem_data(bio_, &data)); + return std::string(data, size); + } +}; + +class Stuff { + private: + PKCS12 *value_; + EVP_PKEY *key_; + X509 *cert_; + STACK_OF(X509) *ca_; + + public: + Stuff(BIO *bio) : + value_(d2i_PKCS12_bio(bio, NULL)), + ca_(NULL) + { + _assert(value_ != NULL); + _assert(PKCS12_parse(value_, "", &key_, &cert_, &ca_) != 0); + _assert(key_ != NULL); + _assert(cert_ != NULL); + } + + Stuff(const std::string &data) : + Stuff(Buffer(data)) + { + } + + ~Stuff() { + sk_X509_pop_free(ca_, X509_free); + X509_free(cert_); + EVP_PKEY_free(key_); + PKCS12_free(value_); + } + + operator PKCS12 *() const { + return value_; + } + + operator EVP_PKEY *() const { + return key_; + } + + operator X509 *() const { + return cert_; + } + + operator STACK_OF(X509) *() const { + return ca_; + } +}; + +class Signature { + private: + PKCS7 *value_; + + public: + Signature(const Stuff &stuff, const Buffer &data) : + value_(PKCS7_sign(stuff, stuff, stuff, data, PKCS7_BINARY | PKCS7_DETACHED)) + { + _assert(value_ != NULL); + } + + ~Signature() { + PKCS7_free(value_); + } + + operator PKCS7 *() const { + return value_; + } +}; +#endif + +class NullBuffer : + public std::streambuf +{ + public: + virtual std::streamsize xsputn(const char_type *data, std::streamsize size) { + return size; + } + + virtual int_type overflow(int_type next) { + return next; + } +}; + +class Digest { + public: + uint8_t sha1_[LDID_SHA1_DIGEST_LENGTH]; +}; + +class Hash { + public: + char sha1_[LDID_SHA1_DIGEST_LENGTH]; + char sha256_[LDID_SHA256_DIGEST_LENGTH]; + + operator std::vector() const { + return {sha1_, sha1_ + sizeof(sha1_)}; + } +}; + +class HashBuffer : + public std::streambuf +{ + private: + Hash &hash_; + + LDID_SHA1_CTX sha1_; + LDID_SHA256_CTX sha256_; + + public: + HashBuffer(Hash &hash) : + hash_(hash) + { + LDID_SHA1_Init(&sha1_); + LDID_SHA256_Init(&sha256_); + } + + ~HashBuffer() { + LDID_SHA1_Final(reinterpret_cast(hash_.sha1_), &sha1_); + LDID_SHA256_Final(reinterpret_cast(hash_.sha256_), &sha256_); + } + + virtual std::streamsize xsputn(const char_type *data, std::streamsize size) { + LDID_SHA1_Update(&sha1_, data, size); + LDID_SHA256_Update(&sha256_, data, size); + return size; + } + + virtual int_type overflow(int_type next) { + if (next == traits_type::eof()) + return sync(); + char value(next); + xsputn(&value, 1); + return next; + } +}; + +class HashProxy : + public HashBuffer +{ + private: + std::streambuf &buffer_; + + public: + HashProxy(Hash &hash, std::streambuf &buffer) : + HashBuffer(hash), + buffer_(buffer) + { + } + + virtual std::streamsize xsputn(const char_type *data, std::streamsize size) { + _assert(HashBuffer::xsputn(data, size) == size); + return buffer_.sputn(data, size); + } +}; + +#ifndef LDID_NOTOOLS +static bool Starts(const std::string &lhs, const std::string &rhs) { + return lhs.size() >= rhs.size() && lhs.compare(0, rhs.size(), rhs) == 0; +} + +class Split { + public: + std::string dir; + std::string base; + + Split(const std::string &path) { + size_t slash(path.rfind('/')); + if (slash == std::string::npos) + base = path; + else { + dir = path.substr(0, slash + 1); + base = path.substr(slash + 1); + } + } +}; + +static void mkdir_p(const std::string &path) { + if (path.empty()) + return; +#ifdef __WIN32__ + if (_syscall(mkdir(path.c_str()), EEXIST) == -EEXIST) + return; +#else + if (_syscall(mkdir(path.c_str(), 0755), EEXIST) == -EEXIST) + return; +#endif + auto slash(path.rfind('/', path.size() - 1)); + if (slash == std::string::npos) + return; + mkdir_p(path.substr(0, slash)); +} + +static std::string Temporary(std::filebuf &file, const Split &split) { + std::string temp(split.dir + ".ldid." + split.base); + mkdir_p(split.dir); + _assert_(file.open(temp.c_str(), std::ios::out | std::ios::trunc | std::ios::binary) == &file, "open(): %s", temp.c_str()); + return temp; +} + +static void Commit(const std::string &path, const std::string &temp) { + struct stat info; + if (_syscall(stat(path.c_str(), &info), ENOENT) == 0) { +#ifndef __WIN32__ + _syscall(chown(temp.c_str(), info.st_uid, info.st_gid)); +#endif + _syscall(chmod(temp.c_str(), info.st_mode)); + } + + _syscall(rename(temp.c_str(), path.c_str())); +} +#endif + +namespace ldid { + +std::vector Sign(const void *idata, size_t isize, std::streambuf &output, const std::string &identifier, const std::string &entitlements, const std::string &requirement, const std::string &key, const Slots &slots) { + std::vector hash(LDID_SHA1_DIGEST_LENGTH); + + std::string team; + +#ifndef LDID_NOSMIME + if (!key.empty()) { + Stuff stuff(key); + auto name(X509_get_subject_name(stuff)); + _assert(name != NULL); + auto index(X509_NAME_get_index_by_NID(name, NID_organizationalUnitName, -1)); + _assert(index >= 0); + auto next(X509_NAME_get_index_by_NID(name, NID_organizationalUnitName, index)); + _assert(next == -1); + auto entry(X509_NAME_get_entry(name, index)); + _assert(entry != NULL); + auto asn(X509_NAME_ENTRY_get_data(entry)); + _assert(asn != NULL); + team.assign(reinterpret_cast(ASN1_STRING_data(asn)), ASN1_STRING_length(asn)); + } +#endif + + // XXX: this is just a "sufficiently large number" + size_t certificate(0x3000); + + Allocate(idata, isize, output, fun([&](const MachHeader &mach_header, size_t size) -> size_t { + size_t alloc(sizeof(struct SuperBlob)); + + uint32_t special(0); + + special = std::max(special, CSSLOT_REQUIREMENTS); + alloc += sizeof(struct BlobIndex); + if (requirement.empty()) + alloc += 0xc; + else + alloc += requirement.size(); + + if (!entitlements.empty()) { + special = std::max(special, CSSLOT_ENTITLEMENTS); + alloc += sizeof(struct BlobIndex); + alloc += sizeof(struct Blob); + alloc += entitlements.size(); + } + + special = std::max(special, CSSLOT_CODEDIRECTORY); + alloc += sizeof(struct BlobIndex); + alloc += sizeof(struct Blob); + alloc += sizeof(struct CodeDirectory); + alloc += identifier.size() + 1; + + if (!team.empty()) + alloc += team.size() + 1; + + if (!key.empty()) { + alloc += sizeof(struct BlobIndex); + alloc += sizeof(struct Blob); + alloc += certificate; + } + + _foreach (slot, slots) + special = std::max(special, slot.first); + + mach_header.ForSection(fun([&](const char *segment, const char *section, void *data, size_t size) { + if (strcmp(segment, "__TEXT") == 0 && section != NULL && strcmp(section, "__info_plist") == 0) + special = std::max(special, CSSLOT_INFOSLOT); + })); + + uint32_t normal((size + PageSize_ - 1) / PageSize_); + alloc = Align(alloc + (special + normal) * LDID_SHA1_DIGEST_LENGTH, 16); + return alloc; + }), fun([&](const MachHeader &mach_header, std::streambuf &output, size_t limit, const std::string &overlap, const char *top) -> size_t { + Blobs blobs; + + if (true) { + std::stringbuf data; + + if (requirement.empty()) { + Blobs requirements; + put(data, CSMAGIC_REQUIREMENTS, requirements); + } else { + put(data, requirement.data(), requirement.size()); + } + + insert(blobs, CSSLOT_REQUIREMENTS, data); + } + + if (!entitlements.empty()) { + std::stringbuf data; + put(data, entitlements.data(), entitlements.size()); + insert(blobs, CSSLOT_ENTITLEMENTS, CSMAGIC_EMBEDDED_ENTITLEMENTS, data); + } + + if (true) { + std::stringbuf data; + + Slots posts(slots); + + mach_header.ForSection(fun([&](const char *segment, const char *section, void *data, size_t size) { + if (strcmp(segment, "__TEXT") == 0 && section != NULL && strcmp(section, "__info_plist") == 0) + sha1(posts[CSSLOT_INFOSLOT], data, size); + })); + + uint32_t special(0); + _foreach (blob, blobs) + special = std::max(special, blob.first); + _foreach (slot, posts) + special = std::max(special, slot.first); + uint32_t normal((limit + PageSize_ - 1) / PageSize_); + + CodeDirectory directory; + directory.version = Swap(uint32_t(0x00020200)); + directory.flags = Swap(uint32_t(0)); + directory.nSpecialSlots = Swap(special); + directory.codeLimit = Swap(uint32_t(limit)); + directory.nCodeSlots = Swap(normal); + directory.hashSize = LDID_SHA1_DIGEST_LENGTH; + directory.hashType = CS_HASHTYPE_SHA1; + directory.spare1 = 0x00; + directory.pageSize = PageShift_; + directory.spare2 = Swap(uint32_t(0)); + directory.scatterOffset = Swap(uint32_t(0)); + directory.spare3 = Swap(uint32_t(0)); + directory.codeLimit64 = Swap(uint64_t(0)); + + uint32_t offset(sizeof(Blob) + sizeof(CodeDirectory)); + + directory.identOffset = Swap(uint32_t(offset)); + offset += identifier.size() + 1; + + if (team.empty()) + directory.teamIDOffset = Swap(uint32_t(0)); + else { + directory.teamIDOffset = Swap(uint32_t(offset)); + offset += team.size() + 1; + } + + offset += LDID_SHA1_DIGEST_LENGTH * special; + directory.hashOffset = Swap(uint32_t(offset)); + offset += LDID_SHA1_DIGEST_LENGTH * normal; + + put(data, &directory, sizeof(directory)); + + put(data, identifier.c_str(), identifier.size() + 1); + if (!team.empty()) + put(data, team.c_str(), team.size() + 1); + + std::vector storage(special + normal); + auto *hashes(&storage[special]); + + memset(storage.data(), 0, sizeof(Digest) * special); + + _foreach (blob, blobs) { + auto local(reinterpret_cast(&blob.second[0])); + sha1((hashes - blob.first)->sha1_, local, Swap(local->length)); + } + + _foreach (slot, posts) { + _assert(sizeof(*hashes) == slot.second.size()); + memcpy(hashes - slot.first, slot.second.data(), slot.second.size()); + } + + if (normal != 1) + for (size_t i = 0; i != normal - 1; ++i) + sha1(hashes[i].sha1_, (PageSize_ * i < overlap.size() ? overlap.data() : top) + PageSize_ * i, PageSize_); + if (normal != 0) + sha1(hashes[normal - 1].sha1_, top + PageSize_ * (normal - 1), ((limit - 1) % PageSize_) + 1); + + put(data, storage.data(), sizeof(Digest) * storage.size()); + + const auto &save(insert(blobs, CSSLOT_CODEDIRECTORY, CSMAGIC_CODEDIRECTORY, data)); + sha1(hash, save.data(), save.size()); + } + +#ifndef LDID_NOSMIME + if (!key.empty()) { + std::stringbuf data; + const std::string &sign(blobs[CSSLOT_CODEDIRECTORY]); + + Stuff stuff(key); + Buffer bio(sign); - if (size == _not(size_t)) - size = mach_header.GetSize(); + Signature signature(stuff, sign); + Buffer result(signature); + std::string value(result); + put(data, value.data(), value.size()); + + const auto &save(insert(blobs, CSSLOT_SIGNATURESLOT, CSMAGIC_BLOBWRAPPER, data)); + _assert(save.size() <= certificate); + } +#endif + + return put(output, CSMAGIC_EMBEDDED_SIGNATURE, blobs); + })); + + return hash; +} + +#ifndef LDID_NOTOOLS +static void Unsign(void *idata, size_t isize, std::streambuf &output) { + Allocate(idata, isize, output, fun([](const MachHeader &mach_header, size_t size) -> size_t { + return 0; + }), fun([](const MachHeader &mach_header, std::streambuf &output, size_t limit, const std::string &overlap, const char *top) -> size_t { + return 0; + })); +} + +std::string DiskFolder::Path(const std::string &path) { + return path_ + "/" + path; +} + +DiskFolder::DiskFolder(const std::string &path) : + path_(path) +{ +} + +DiskFolder::~DiskFolder() { + if (!std::uncaught_exception()) + for (const auto &commit : commit_) + Commit(commit.first, commit.second); +} + +#ifndef __WIN32__ +std::string readlink(const std::string &path) { + for (size_t size(1024); ; size *= 2) { + std::string data; + data.resize(size); + + int writ(_syscall(::readlink(path.c_str(), &data[0], data.size()))); + if (size_t(writ) >= size) + continue; + + data.resize(writ); + return data; + } +} +#endif + +void DiskFolder::Find(const std::string &root, const std::string &base, const Functor &)> &)> &code, const Functor &)> &link) { + std::string path(Path(root) + base); + + DIR *dir(opendir(path.c_str())); + _assert(dir != NULL); + _scope({ _syscall(closedir(dir)); }); + + while (auto child = readdir(dir)) { + std::string name(child->d_name); + if (name == "." || name == "..") + continue; + if (Starts(name, ".ldid.")) + continue; + + bool directory; + +#ifdef __WIN32__ + struct stat info; + _syscall(stat((path + name).c_str(), &info)); + if (false); + else if (S_ISDIR(info.st_mode)) + directory = true; + else if (S_ISREG(info.st_mode)) + directory = false; + else + _assert_(false, "st_mode=%x", info.st_mode); +#else + switch (child->d_type) { + case DT_DIR: + directory = true; + break; + case DT_REG: + directory = false; + break; + case DT_LNK: + link(base + name, fun([&]() { return readlink(path + name); })); + continue; + default: + _assert_(false, "d_type=%u", child->d_type); + } +#endif + + if (directory) + Find(root, base + name + "/", code, link); + else + code(base + name, fun([&](const Functor &code) { + std::string access(root + base + name); + Open(access, fun([&](std::streambuf &data, const void *flag) { + auto from(path + name); + std::filebuf save; + commit_[from] = Temporary(save, from); + code(data, save); + })); + })); + } +} + +void DiskFolder::Save(const std::string &path, const void *flag, const Functor &code) { + std::filebuf save; + auto from(Path(path)); + commit_[from] = Temporary(save, from); + code(save); +} + +bool DiskFolder::Look(const std::string &path) { + return _syscall(access(Path(path).c_str(), R_OK), ENOENT) == 0; +} + +void DiskFolder::Open(const std::string &path, const Functor &code) { + std::filebuf data; + auto result(data.open(Path(path).c_str(), std::ios::binary | std::ios::in)); + _assert_(result == &data, "DiskFolder::Open(%s)", path.c_str()); + code(data, NULL); +} + +void DiskFolder::Find(const std::string &path, const Functor &)> &)> &code, const Functor &)> &link) { + Find(path, "", code, link); +} +#endif + +SubFolder::SubFolder(Folder &parent, const std::string &path) : + parent_(parent), + path_(path) +{ +} + +void SubFolder::Save(const std::string &path, const void *flag, const Functor &code) { + return parent_.Save(path_ + path, flag, code); +} + +bool SubFolder::Look(const std::string &path) { + return parent_.Look(path_ + path); +} + +void SubFolder::Open(const std::string &path, const Functor &code) { + return parent_.Open(path_ + path, code); +} + +void SubFolder::Find(const std::string &path, const Functor &)> &)> &code, const Functor &)> &link) { + return parent_.Find(path_ + path, code, link); +} + +std::string UnionFolder::Map(const std::string &path) { + auto remap(remaps_.find(path)); + if (remap == remaps_.end()) + return path; + return remap->second; +} + +void UnionFolder::Map(const std::string &path, const Functor &)> &)> &code, const std::string &file, const Functor &)> &save) { + if (file.size() >= path.size() && file.substr(0, path.size()) == path) + code(file.substr(path.size()), fun([&](const Functor &code) { + save(fun([&](std::streambuf &data, const void *flag) { + parent_.Save(file, flag, fun([&](std::streambuf &save) { + code(data, save); + })); + })); + })); +} + +UnionFolder::UnionFolder(Folder &parent) : + parent_(parent) +{ +} + +void UnionFolder::Save(const std::string &path, const void *flag, const Functor &code) { + return parent_.Save(Map(path), flag, code); +} + +bool UnionFolder::Look(const std::string &path) { + auto file(resets_.find(path)); + if (file != resets_.end()) + return true; + return parent_.Look(Map(path)); +} + +void UnionFolder::Open(const std::string &path, const Functor &code) { + auto file(resets_.find(path)); + if (file == resets_.end()) + return parent_.Open(Map(path), code); + auto &entry(file->second); + + auto &data(entry.first); + data.pubseekpos(0, std::ios::in); + code(data, entry.second); +} + +void UnionFolder::Find(const std::string &path, const Functor &)> &)> &code, const Functor &)> &link) { + parent_.Find(path, fun([&](const std::string &name, const Functor &)> &save) { + if (deletes_.find(path + name) == deletes_.end()) + code(name, save); + }), fun([&](const std::string &name, const Functor &read) { + if (deletes_.find(path + name) == deletes_.end()) + link(name, read); + })); + + for (auto &reset : resets_) + Map(path, code, reset.first, fun([&](const Functor &code) { + auto &entry(reset.second); + entry.first.pubseekpos(0, std::ios::in); + code(entry.first, entry.second); + })); + + for (auto &remap : remaps_) + Map(path, code, remap.first, fun([&](const Functor &code) { + parent_.Open(remap.second, fun([&](std::streambuf &data, const void *flag) { + code(data, flag); + })); + })); +} + +#ifndef LDID_NOTOOLS +static size_t copy(std::streambuf &source, std::streambuf &target) { + size_t total(0); + for (;;) { + char data[4096]; + size_t writ(source.sgetn(data, sizeof(data))); + if (writ == 0) + break; + _assert(target.sputn(data, writ) == writ); + total += writ; + } + return total; +} + +#ifndef LDID_NOPLIST +static plist_t plist(const std::string &data) { + plist_t plist(NULL); + if (Starts(data, "bplist00")) + plist_from_bin(data.data(), data.size(), &plist); + else + plist_from_xml(data.data(), data.size(), &plist); + _assert(plist != NULL); + return plist; +} + +static void plist_d(std::streambuf &buffer, const Functor &code) { + std::stringbuf data; + copy(buffer, data); + auto node(plist(data.str())); + _scope({ plist_free(node); }); + _assert(plist_get_node_type(node) == PLIST_DICT); + code(node); +} + +static std::string plist_s(plist_t node) { + _assert(node != NULL); + _assert(plist_get_node_type(node) == PLIST_STRING); + char *data; + plist_get_string_val(node, &data); + _scope({ free(data); }); + return data; +} +#endif + +enum Mode { + NoMode, + OptionalMode, + OmitMode, + NestedMode, + TopMode, +}; + +class Expression { + private: + regex_t regex_; + std::vector matches_; + + public: + Expression(const std::string &code) { + _assert_(regcomp(®ex_, code.c_str(), REG_EXTENDED) == 0, "regcomp()"); + matches_.resize(regex_.re_nsub + 1); + } + + ~Expression() { + regfree(®ex_); + } + + bool operator ()(const std::string &data) { + regmatch_t matches[matches_.size()]; + auto value(regexec(®ex_, data.c_str(), matches_.size(), matches, 0)); + if (value == REG_NOMATCH) + return false; + _assert_(value == 0, "regexec()"); + for (size_t i(0); i != matches_.size(); ++i) + matches_[i].assign(data.data() + matches[i].rm_so, matches[i].rm_eo - matches[i].rm_so); + return true; + } + + const std::string &operator [](size_t index) const { + return matches_[index]; + } +}; + +struct Rule { + unsigned weight_; + Mode mode_; + std::string code_; + + mutable std::auto_ptr regex_; + + Rule(unsigned weight, Mode mode, const std::string &code) : + weight_(weight), + mode_(mode), + code_(code) + { + } + + Rule(const Rule &rhs) : + weight_(rhs.weight_), + mode_(rhs.mode_), + code_(rhs.code_) + { + } + + void Compile() const { + regex_.reset(new Expression(code_)); + } + + bool operator ()(const std::string &data) const { + _assert(regex_.get() != NULL); + return (*regex_)(data); + } + + bool operator <(const Rule &rhs) const { + if (weight_ > rhs.weight_) + return true; + if (weight_ < rhs.weight_) + return false; + return mode_ > rhs.mode_; + } +}; + +struct RuleCode { + bool operator ()(const Rule *lhs, const Rule *rhs) const { + return lhs->code_ < rhs->code_; + } +}; + +#ifndef LDID_NOPLIST +static std::vector Sign(const uint8_t *prefix, size_t size, std::streambuf &buffer, Hash &hash, std::streambuf &save, const std::string &identifier, const std::string &entitlements, const std::string &requirement, const std::string &key, const Slots &slots) { + // XXX: this is a miserable fail + std::stringbuf temp; + put(temp, prefix, size); + size += copy(buffer, temp); + // XXX: this is a stupid hack + pad(temp, 0x10 - (size & 0xf)); + auto data(temp.str()); + + HashProxy proxy(hash, save); + return Sign(data.data(), data.size(), proxy, identifier, entitlements, requirement, key, slots); +} + +Bundle Sign(const std::string &root, Folder &folder, const std::string &key, std::map &remote, const std::string &requirement, const Functor &alter) { + std::string executable; + std::string identifier; + + bool mac(false); + + std::string info("Info.plist"); + if (!folder.Look(info) && folder.Look("Resources/" + info)) { + mac = true; + info = "Resources/" + info; + } + + folder.Open(info, fun([&](std::streambuf &buffer, const void *flag) { + plist_d(buffer, fun([&](plist_t node) { + executable = plist_s(plist_dict_get_item(node, "CFBundleExecutable")); + identifier = plist_s(plist_dict_get_item(node, "CFBundleIdentifier")); + })); + })); + + if (!mac && folder.Look("MacOS/" + executable)) { + executable = "MacOS/" + executable; + mac = true; + } + + std::string entitlements; + folder.Open(executable, fun([&](std::streambuf &buffer, const void *flag) { + // XXX: this is a miserable fail + std::stringbuf temp; + auto size(copy(buffer, temp)); + // XXX: this is a stupid hack + pad(temp, 0x10 - (size & 0xf)); + auto data(temp.str()); + entitlements = alter(root, Analyze(data.data(), data.size())); + })); + + static const std::string directory("_CodeSignature/"); + static const std::string signature(directory + "CodeResources"); + + std::map> versions; + + auto &rules1(versions[""]); + auto &rules2(versions["2"]); + + const std::string resources(mac ? "Resources/" : ""); + + if (true) { + rules1.insert(Rule{1, NoMode, "^" + resources}); + if (!mac) rules1.insert(Rule{10000, OmitMode, "^(Frameworks/[^/]+\\.framework/|PlugIns/[^/]+\\.appex/|PlugIns/[^/]+\\.appex/Frameworks/[^/]+\\.framework/|())SC_Info/[^/]+\\.(sinf|supf|supp)$"}); + rules1.insert(Rule{1000, OptionalMode, "^" + resources + ".*\\.lproj/"}); + rules1.insert(Rule{1100, OmitMode, "^" + resources + ".*\\.lproj/locversion.plist$"}); + if (!mac) rules1.insert(Rule{10000, OmitMode, "^Watch/[^/]+\\.app/(Frameworks/[^/]+\\.framework/|PlugIns/[^/]+\\.appex/|PlugIns/[^/]+\\.appex/Frameworks/[^/]+\\.framework/)SC_Info/[^/]+\\.(sinf|supf|supp)$"}); + rules1.insert(Rule{1, NoMode, "^version.plist$"}); + } + + if (true) { + rules2.insert(Rule{11, NoMode, ".*\\.dSYM($|/)"}); + rules2.insert(Rule{20, NoMode, "^" + resources}); + rules2.insert(Rule{2000, OmitMode, "^(.*/)?\\.DS_Store$"}); + if (!mac) rules2.insert(Rule{10000, OmitMode, "^(Frameworks/[^/]+\\.framework/|PlugIns/[^/]+\\.appex/|PlugIns/[^/]+\\.appex/Frameworks/[^/]+\\.framework/|())SC_Info/[^/]+\\.(sinf|supf|supp)$"}); + rules2.insert(Rule{10, NestedMode, "^(Frameworks|SharedFrameworks|PlugIns|Plug-ins|XPCServices|Helpers|MacOS|Library/(Automator|Spotlight|LoginItems))/"}); + rules2.insert(Rule{1, NoMode, "^.*"}); + rules2.insert(Rule{1000, OptionalMode, "^" + resources + ".*\\.lproj/"}); + rules2.insert(Rule{1100, OmitMode, "^" + resources + ".*\\.lproj/locversion.plist$"}); + rules2.insert(Rule{20, OmitMode, "^Info\\.plist$"}); + rules2.insert(Rule{20, OmitMode, "^PkgInfo$"}); + if (!mac) rules2.insert(Rule{10000, OmitMode, "^Watch/[^/]+\\.app/(Frameworks/[^/]+\\.framework/|PlugIns/[^/]+\\.appex/|PlugIns/[^/]+\\.appex/Frameworks/[^/]+\\.framework/)SC_Info/[^/]+\\.(sinf|supf|supp)$"}); + rules2.insert(Rule{10, NestedMode, "^[^/]+$"}); + rules2.insert(Rule{20, NoMode, "^embedded\\.provisionprofile$"}); + rules2.insert(Rule{20, NoMode, "^version\\.plist$"}); + } + + std::map local; + + std::string failure(mac ? "Contents/|Versions/[^/]*/Resources/" : ""); + Expression nested("^(Frameworks/[^/]*\\.framework|PlugIns/[^/]*\\.appex(()|/[^/]*.app))/(" + failure + ")Info\\.plist$"); + std::map bundles; + + folder.Find("", fun([&](const std::string &name, const Functor &)> &code) { + if (!nested(name)) + return; + auto bundle(root + Split(name).dir); + bundle.resize(bundle.size() - resources.size()); + SubFolder subfolder(folder, bundle); + + bundles[nested[1]] = Sign(bundle, subfolder, key, local, "", Starts(name, "PlugIns/") ? alter : + static_cast &>(fun([&](const std::string &, const std::string &entitlements) -> std::string { return entitlements; }))); + }), fun([&](const std::string &name, const Functor &read) { + })); + + std::set excludes; + + auto exclude([&](const std::string &name) { + // BundleDiskRep::adjustResources -> builder.addExclusion + if (name == executable || Starts(name, directory) || Starts(name, "_MASReceipt/") || name == "CodeResources") + return true; + + for (const auto &bundle : bundles) + if (Starts(name, bundle.first + "/")) { + excludes.insert(name); + return true; + } + + return false; + }); + + std::map links; + + folder.Find("", fun([&](const std::string &name, const Functor &)> &code) { + if (exclude(name)) + return; + + if (local.find(name) != local.end()) + return; + auto &hash(local[name]); + + code(fun([&](std::streambuf &data, std::streambuf &save) { + union { + struct { + uint32_t magic; + uint32_t count; + }; + + uint8_t bytes[8]; + } header; + + auto size(most(data, &header.bytes, sizeof(header.bytes))); + + if (name != "_WatchKitStub/WK" && size == sizeof(header.bytes)) + switch (Swap(header.magic)) { + case FAT_MAGIC: + // Java class file format + if (Swap(header.count) >= 40) + break; + case FAT_CIGAM: + case MH_MAGIC: case MH_MAGIC_64: + case MH_CIGAM: case MH_CIGAM_64: + Slots slots; + Sign(header.bytes, size, data, hash, save, identifier, "", "", key, slots); + return; + } + + HashProxy proxy(hash, save); + put(proxy, header.bytes, size); + copy(data, proxy); + })); + }), fun([&](const std::string &name, const Functor &read) { + if (exclude(name)) + return; + + links[name] = read(); + })); + + auto plist(plist_new_dict()); + _scope({ plist_free(plist); }); + + for (const auto &version : versions) { + auto files(plist_new_dict()); + plist_dict_set_item(plist, ("files" + version.first).c_str(), files); + + for (const auto &rule : version.second) + rule.Compile(); + + bool old(&version.second == &rules1); + + for (const auto &hash : local) + for (const auto &rule : version.second) + if (rule(hash.first)) { + if (!old && mac && excludes.find(hash.first) != excludes.end()); + else if (old && rule.mode_ == NoMode) + plist_dict_set_item(files, hash.first.c_str(), plist_new_data(hash.second.sha1_, sizeof(hash.second.sha1_))); + else if (rule.mode_ != OmitMode) { + auto entry(plist_new_dict()); + plist_dict_set_item(entry, "hash", plist_new_data(hash.second.sha1_, sizeof(hash.second.sha1_))); + if (!old) + plist_dict_set_item(entry, "hash2", plist_new_data(hash.second.sha256_, sizeof(hash.second.sha256_))); + if (rule.mode_ == OptionalMode) + plist_dict_set_item(entry, "optional", plist_new_bool(true)); + plist_dict_set_item(files, hash.first.c_str(), entry); + } + + break; + } + + for (const auto &link : links) + for (const auto &rule : version.second) + if (rule(link.first)) { + if (rule.mode_ != OmitMode) { + auto entry(plist_new_dict()); + plist_dict_set_item(entry, "symlink", plist_new_string(link.second.c_str())); + if (rule.mode_ == OptionalMode) + plist_dict_set_item(entry, "optional", plist_new_bool(true)); + plist_dict_set_item(files, link.first.c_str(), entry); } - allocations.push_back(CodesignAllocation(mach_header.GetCPUType(), mach_header.GetCPUSubtype(), size)); + break; } + + if (!old && mac) + for (const auto &bundle : bundles) { + auto entry(plist_new_dict()); + plist_dict_set_item(entry, "cdhash", plist_new_data(bundle.second.hash.data(), bundle.second.hash.size())); + plist_dict_set_item(entry, "requirement", plist_new_string("anchor apple generic")); + plist_dict_set_item(files, bundle.first.c_str(), entry); } + } - pid_t pid = fork(); - _syscall(pid); - if (pid == 0) { - // XXX: this leaks memory, but it doesn't really matter - std::vector args; - char *arg; + for (const auto &version : versions) { + auto rules(plist_new_dict()); + plist_dict_set_item(plist, ("rules" + version.first).c_str(), rules); + + std::multiset ordered; + for (const auto &rule : version.second) + ordered.insert(&rule); + + for (const auto &rule : ordered) + if (rule->weight_ == 1 && rule->mode_ == NoMode) + plist_dict_set_item(rules, rule->code_.c_str(), plist_new_bool(true)); + else { + auto entry(plist_new_dict()); + plist_dict_set_item(rules, rule->code_.c_str(), entry); + + switch (rule->mode_) { + case NoMode: + break; + case OmitMode: + plist_dict_set_item(entry, "omit", plist_new_bool(true)); + break; + case OptionalMode: + plist_dict_set_item(entry, "optional", plist_new_bool(true)); + break; + case NestedMode: + plist_dict_set_item(entry, "nested", plist_new_bool(true)); + break; + case TopMode: + plist_dict_set_item(entry, "top", plist_new_bool(true)); + break; + } - args.push_back(allocate); + if (rule->weight_ >= 10000) + plist_dict_set_item(entry, "weight", plist_new_uint(rule->weight_)); + else if (rule->weight_ != 1) + plist_dict_set_item(entry, "weight", plist_new_real(rule->weight_)); + } + } - args.push_back("-i"); - args.push_back(path); + folder.Save(signature, NULL, fun([&](std::streambuf &save) { + HashProxy proxy(local[signature], save); + char *xml(NULL); + uint32_t size; + plist_to_xml(plist, &xml, &size); + _scope({ free(xml); }); + put(proxy, xml, size); + })); + + Bundle bundle; + bundle.path = executable; + + folder.Open(executable, fun([&](std::streambuf &buffer, const void *flag) { + folder.Save(executable, flag, fun([&](std::streambuf &save) { + Slots slots; + slots[1] = local.at(info); + slots[3] = local.at(signature); + bundle.hash = Sign(NULL, 0, buffer, local[executable], save, identifier, entitlements, requirement, key, slots); + })); + })); + + for (const auto &entry : local) + remote[root + entry.first] = entry.second; + + return bundle; +} - _foreach (allocation, allocations) { - args.push_back("-A"); +Bundle Sign(const std::string &root, Folder &folder, const std::string &key, const std::string &requirement, const Functor &alter) { + std::map local; + return Sign(root, folder, key, local, requirement, alter); +} +#endif - asprintf(&arg, "%u", allocation.type_); - args.push_back(arg); +#endif +} - asprintf(&arg, "%u", allocation.subtype_); - args.push_back(arg); +#ifndef LDID_NOTOOLS +int main(int argc, char *argv[]) { +#ifndef LDID_NOSMIME + OpenSSL_add_all_algorithms(); +#endif - size_t alloc(0); - alloc += sizeof(struct SuperBlob); - uint32_t special(0); + union { + uint16_t word; + uint8_t byte[2]; + } endian = {1}; - special = std::max(special, CSSLOT_CODEDIRECTORY); - alloc += sizeof(struct BlobIndex); - alloc += sizeof(struct CodeDirectory); - alloc += strlen(base) + 1; + little_ = endian.byte[0]; - special = std::max(special, CSSLOT_REQUIREMENTS); - alloc += sizeof(struct BlobIndex); - alloc += 0xc; + bool flag_r(false); + bool flag_e(false); + bool flag_q(false); - if (xmld != NULL) { - special = std::max(special, CSSLOT_ENTITLEMENTS); - alloc += sizeof(struct BlobIndex); - alloc += sizeof(struct Blob); - alloc += xmls; - } +#ifndef LDID_NOFLAGT + bool flag_T(false); +#endif - size_t normal((allocation.size_ + 0x1000 - 1) / 0x1000); - alloc += (special + normal) * 0x14; + bool flag_S(false); + bool flag_s(false); + + bool flag_D(false); + + bool flag_A(false); + bool flag_a(false); + + bool flag_u(false); - alloc += 15; - alloc /= 16; - alloc *= 16; + uint32_t flag_CPUType(_not(uint32_t)); + uint32_t flag_CPUSubtype(_not(uint32_t)); + + const char *flag_I(NULL); + +#ifndef LDID_NOFLAGT + bool timeh(false); + uint32_t timev(0); +#endif + + Map entitlements; + Map requirement; + Map key; + ldid::Slots slots; + + std::vector files; + + if (argc == 1) { + fprintf(stderr, "usage: %s -S[entitlements.xml] \n", argv[0]); + fprintf(stderr, " %s -e MobileSafari\n", argv[0]); + fprintf(stderr, " %s -S cat\n", argv[0]); + fprintf(stderr, " %s -Stfp.xml gdb\n", argv[0]); + exit(0); + } + + for (int argi(1); argi != argc; ++argi) + if (argv[argi][0] != '-') + files.push_back(argv[argi]); + else switch (argv[argi][1]) { + case 'r': + _assert(!flag_s); + _assert(!flag_S); + flag_r = true; + break; + + case 'e': flag_e = true; break; + + case 'E': { + const char *slot = argv[argi] + 2; + const char *colon = strchr(slot, ':'); + _assert(colon != NULL); + Map file(colon + 1, O_RDONLY, PROT_READ, MAP_PRIVATE); + char *arge; + unsigned number(strtoul(slot, &arge, 0)); + _assert(arge == colon); + sha1(slots[number], file.data(), file.size()); + } break; - asprintf(&arg, "%zu", alloc); - args.push_back(arg); + case 'q': flag_q = true; break; + + case 'Q': { + const char *xml = argv[argi] + 2; + requirement.open(xml, O_RDONLY, PROT_READ, MAP_PRIVATE); + } break; + + case 'D': flag_D = true; break; + + case 'a': flag_a = true; break; + + case 'A': + _assert(!flag_A); + flag_A = true; + if (argv[argi][2] != '\0') { + const char *cpu = argv[argi] + 2; + const char *colon = strchr(cpu, ':'); + _assert(colon != NULL); + char *arge; + flag_CPUType = strtoul(cpu, &arge, 0); + _assert(arge == colon); + flag_CPUSubtype = strtoul(colon + 1, &arge, 0); + _assert(arge == argv[argi] + strlen(argv[argi])); } + break; - args.push_back("-o"); - args.push_back(temp); + case 's': + _assert(!flag_r); + _assert(!flag_S); + flag_s = true; + break; - args.push_back(NULL); + case 'S': + _assert(!flag_r); + _assert(!flag_s); + flag_S = true; + if (argv[argi][2] != '\0') { + const char *xml = argv[argi] + 2; + entitlements.open(xml, O_RDONLY, PROT_READ, MAP_PRIVATE); + } + break; - if (false) { - printf("run:"); - _foreach (arg, args) - printf(" %s", arg); - printf("\n"); + case 'K': + if (argv[argi][2] != '\0') + key.open(argv[argi] + 2, O_RDONLY, PROT_READ, MAP_PRIVATE); + break; + +#ifndef LDID_NOFLAGT + case 'T': { + flag_T = true; + if (argv[argi][2] == '-') + timeh = true; + else { + char *arge; + timev = strtoul(argv[argi] + 2, &arge, 0); + _assert(arge == argv[argi] + strlen(argv[argi])); } + } break; +#endif - execvp(allocate, (char **) &args[0]); - _assert(false); + case 'u': { + flag_u = true; + } break; + + case 'I': { + flag_I = argv[argi] + 2; + } break; + + default: + goto usage; + break; + } + + _assert(flag_S || key.empty()); + _assert(flag_S || flag_I == NULL); + + if (files.empty()) usage: { + exit(0); + } + + size_t filei(0), filee(0); + _foreach (file, files) try { + std::string path(file); + + struct stat info; + _syscall(stat(path.c_str(), &info)); + + if (S_ISDIR(info.st_mode)) { +#ifndef LDID_NOPLIST + _assert(!flag_r); + ldid::DiskFolder folder(path); + path += "/" + Sign("", folder, key, requirement, ldid::fun([&](const std::string &, const std::string &) -> std::string { return entitlements; })).path; +#else + _assert(false); +#endif + } else if (flag_S || flag_r) { + Map input(path, O_RDONLY, PROT_READ, MAP_PRIVATE); + + std::filebuf output; + Split split(path); + auto temp(Temporary(output, split)); + + if (flag_r) + ldid::Unsign(input.data(), input.size(), output); + else { + std::string identifier(flag_I ?: split.base.c_str()); + ldid::Sign(input.data(), input.size(), output, identifier, entitlements, requirement, key, slots); } - int status; - _syscall(waitpid(pid, &status, 0)); - _assert(WIFEXITED(status)); - _assert(WEXITSTATUS(status) == 0); + Commit(path, temp); } - if (flag_p) - printf("path%zu='%s'\n", filei, file.c_str()); + bool modify(false); +#ifndef LDID_NOFLAGT + if (flag_T) + modify = true; +#endif + if (flag_s) + modify = true; - FatHeader fat_header(Map(temp == NULL ? path : temp, !(flag_R | flag_T | flag_s | flag_S | flag_O | flag_D))); - struct linkedit_data_command *signature(NULL); + Map mapping(path, modify); + FatHeader fat_header(mapping.data(), mapping.size()); _foreach (mach_header, fat_header.GetMachHeaders()) { + struct linkedit_data_command *signature(NULL); + struct encryption_info_command *encryption(NULL); + if (flag_A) { if (mach_header.GetCPUType() != flag_CPUType) continue; @@ -990,58 +2558,29 @@ int main(int argc, const char *argv[]) { if (flag_a) printf("cpu=0x%x:0x%x\n", mach_header.GetCPUType(), mach_header.GetCPUSubtype()); - if (flag_d) { - if (struct fat_arch *fat_arch = mach_header.GetFatArch()) - printf("offset=0x%x\n", Swap(fat_arch->offset)); - else - printf("offset=0x0\n"); - } - - if (woffset != _not(uintptr_t)) { - Pointer wvalue(mach_header.GetPointer(woffset)); - if (wvalue == NULL) - printf("(null) %p\n", reinterpret_cast(woffset)); - else - printf("0x%.08x\n", *wvalue); - } - - if (noffset != _not(uintptr_t)) - printf("%s\n", &*mach_header.GetPointer(noffset)); - - if (flag_d) - _foreach(segment, mach_header.GetSegments("__TEXT")) { - printf("vmaddr=0x%x\n", mach_header.Swap(segment->vmaddr)); - printf("fileoff=0x%x\n", mach_header.Swap(segment->fileoff)); - } - - if (flag_O) { - _foreach(section, mach_header.GetSections("__TEXT", "__text")) - section->addr = mach_header.Swap(0); - } - _foreach (load_command, mach_header.GetLoadCommands()) { uint32_t cmd(mach_header.Swap(load_command->cmd)); - if (flag_R && cmd == LC_REEXPORT_DYLIB) - load_command->cmd = mach_header.Swap(LC_LOAD_DYLIB); + if (false); else if (cmd == LC_CODE_SIGNATURE) signature = reinterpret_cast(load_command); - else if (cmd == LC_UUID) { - volatile struct uuid_command *uuid_command(reinterpret_cast(load_command)); - - if (flag_u) { - printf("uuid%zu=%.2x%.2x%.2x%.2x-%.2x%.2x-%.2x%.2x-%.2x%.2x-%.2x%.2x%.2x%.2x%.2x%.2x\n", filei, - uuid_command->uuid[ 0], uuid_command->uuid[ 1], uuid_command->uuid[ 2], uuid_command->uuid[ 3], - uuid_command->uuid[ 4], uuid_command->uuid[ 5], uuid_command->uuid[ 6], uuid_command->uuid[ 7], - uuid_command->uuid[ 8], uuid_command->uuid[ 9], uuid_command->uuid[10], uuid_command->uuid[11], - uuid_command->uuid[12], uuid_command->uuid[13], uuid_command->uuid[14], uuid_command->uuid[15] - ); - } - } else if (cmd == LC_ID_DYLIB) { + else if (cmd == LC_ENCRYPTION_INFO || cmd == LC_ENCRYPTION_INFO_64) + encryption = reinterpret_cast(load_command); + else if (cmd == LC_LOAD_DYLIB) { volatile struct dylib_command *dylib_command(reinterpret_cast(load_command)); + const char *name(reinterpret_cast(load_command) + mach_header.Swap(dylib_command->dylib.name)); - if (flag_t) - printf("time%zu=0x%.8x\n", filei, mach_header.Swap(dylib_command->dylib.timestamp)); + if (strcmp(name, "/System/Library/Frameworks/UIKit.framework/UIKit") == 0) { + if (flag_u) { + Version version; + version.value = mach_header.Swap(dylib_command->dylib.current_version); + printf("uikit=%u.%u.%u\n", version.major, version.minor, version.patch); + } + } + } +#ifndef LDID_NOFLAGT + else if (cmd == LC_ID_DYLIB) { + volatile struct dylib_command *dylib_command(reinterpret_cast(load_command)); if (flag_T) { uint32_t timed; @@ -1055,18 +2594,13 @@ int main(int argc, const char *argv[]) { dylib_command->dylib.timestamp = mach_header.Swap(timed); } - } else if (cmd == LC_ENCRYPTION_INFO) { - volatile struct encryption_info_command *encryption_info_command(reinterpret_cast(load_command)); - - if (flag_D) - encryption_info_command->cryptid = mach_header.Swap(0); - - if (flag_d) { - printf("cryptoff=0x%x\n", mach_header.Swap(encryption_info_command->cryptoff)); - printf("cryptsize=0x%x\n", mach_header.Swap(encryption_info_command->cryptsize)); - printf("cryptid=0x%x\n", mach_header.Swap(encryption_info_command->cryptid)); - } } +#endif + } + + if (flag_D) { + _assert(encryption != NULL); + encryption->cryptid = mach_header.Swap(0); } if (flag_e) { @@ -1082,11 +2616,11 @@ int main(int argc, const char *argv[]) { if (Swap(super->index[index].type) == CSSLOT_ENTITLEMENTS) { uint32_t begin = Swap(super->index[index].offset); struct Blob *entitlements = reinterpret_cast(blob + begin); - fwrite(entitlements + 1, 1, Swap(entitlements->length) - sizeof(struct Blob), stdout); + fwrite(entitlements + 1, 1, Swap(entitlements->length) - sizeof(*entitlements), stdout); } } - if (flag_s) { + if (flag_q) { _assert(signature != NULL); uint32_t data = mach_header.Swap(signature->dataoff); @@ -1096,147 +2630,39 @@ int main(int argc, const char *argv[]) { struct SuperBlob *super = reinterpret_cast(blob); for (size_t index(0); index != Swap(super->count); ++index) - if (Swap(super->index[index].type) == CSSLOT_CODEDIRECTORY) { + if (Swap(super->index[index].type) == CSSLOT_REQUIREMENTS) { uint32_t begin = Swap(super->index[index].offset); - struct CodeDirectory *directory = reinterpret_cast(blob + begin); - - uint8_t (*hashes)[20] = reinterpret_cast(blob + begin + Swap(directory->hashOffset)); - uint32_t pages = Swap(directory->nCodeSlots); - - if (pages != 1) - for (size_t i = 0; i != pages - 1; ++i) - sha1(hashes[i], top + 0x1000 * i, 0x1000); - if (pages != 0) - sha1(hashes[pages - 1], top + 0x1000 * (pages - 1), ((data - 1) % 0x1000) + 1); + struct Blob *requirement = reinterpret_cast(blob + begin); + fwrite(requirement, 1, Swap(requirement->length), stdout); } } - if (flag_S) { + if (flag_s) { _assert(signature != NULL); uint32_t data = mach_header.Swap(signature->dataoff); - uint32_t size = mach_header.Swap(signature->datasize); uint8_t *top = reinterpret_cast(mach_header.GetBase()); uint8_t *blob = top + data; struct SuperBlob *super = reinterpret_cast(blob); - super->blob.magic = Swap(CSMAGIC_EMBEDDED_SIGNATURE); - - uint32_t count = xmld == NULL ? 2 : 3; - uint32_t offset = sizeof(struct SuperBlob) + count * sizeof(struct BlobIndex); - - super->index[0].type = Swap(CSSLOT_CODEDIRECTORY); - super->index[0].offset = Swap(offset); - - uint32_t begin = offset; - struct CodeDirectory *directory = reinterpret_cast(blob + begin); - offset += sizeof(struct CodeDirectory); - directory->blob.magic = Swap(CSMAGIC_CODEDIRECTORY); - directory->version = Swap(uint32_t(0x00020001)); - directory->flags = Swap(uint32_t(0)); - directory->codeLimit = Swap(data); - directory->hashSize = 0x14; - directory->hashType = 0x01; - directory->spare1 = 0x00; - directory->pageSize = 0x0c; - directory->spare2 = Swap(uint32_t(0)); - - directory->identOffset = Swap(offset - begin); - strcpy(reinterpret_cast(blob + offset), base); - offset += strlen(base) + 1; - - uint32_t special = xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS; - directory->nSpecialSlots = Swap(special); - - uint8_t (*hashes)[20] = reinterpret_cast(blob + offset); - memset(hashes, 0, sizeof(*hashes) * special); - - offset += sizeof(*hashes) * special; - hashes += special; - - uint32_t pages = (data + 0x1000 - 1) / 0x1000; - directory->nCodeSlots = Swap(pages); - - if (pages != 1) - for (size_t i = 0; i != pages - 1; ++i) - sha1(hashes[i], top + 0x1000 * i, 0x1000); - if (pages != 0) - sha1(hashes[pages - 1], top + 0x1000 * (pages - 1), ((data - 1) % 0x1000) + 1); - - directory->hashOffset = Swap(offset - begin); - offset += sizeof(*hashes) * pages; - directory->blob.length = Swap(offset - begin); - - super->index[1].type = Swap(CSSLOT_REQUIREMENTS); - super->index[1].offset = Swap(offset); - - memcpy(blob + offset, "\xfa\xde\x0c\x01\x00\x00\x00\x0c\x00\x00\x00\x00", 0xc); - offset += 0xc; - - if (xmld != NULL) { - super->index[2].type = Swap(CSSLOT_ENTITLEMENTS); - super->index[2].offset = Swap(offset); - - uint32_t begin = offset; - struct Blob *entitlements = reinterpret_cast(blob + begin); - offset += sizeof(struct Blob); - - memcpy(blob + offset, xmld, xmls); - offset += xmls; + for (size_t index(0); index != Swap(super->count); ++index) + if (Swap(super->index[index].type) == CSSLOT_CODEDIRECTORY) { + uint32_t begin = Swap(super->index[index].offset); + struct CodeDirectory *directory = reinterpret_cast(blob + begin + sizeof(Blob)); - entitlements->magic = Swap(CSMAGIC_ENTITLEMENTS); - entitlements->length = Swap(offset - begin); - } + uint8_t (*hashes)[LDID_SHA1_DIGEST_LENGTH] = reinterpret_cast(blob + begin + Swap(directory->hashOffset)); + uint32_t pages = Swap(directory->nCodeSlots); - for (size_t index(0); index != count; ++index) { - uint32_t type = Swap(super->index[index].type); - if (type != 0 && type <= special) { - uint32_t offset = Swap(super->index[index].offset); - struct Blob *local = (struct Blob *) (blob + offset); - sha1((uint8_t *) (hashes - type), (uint8_t *) local, Swap(local->length)); + if (pages != 1) + for (size_t i = 0; i != pages - 1; ++i) + sha1(hashes[i], top + PageSize_ * i, PageSize_); + if (pages != 0) + sha1(hashes[pages - 1], top + PageSize_ * (pages - 1), ((data - 1) % PageSize_) + 1); } - } - - super->count = Swap(count); - super->blob.length = Swap(offset); - - if (offset > size) { - fprintf(stderr, "offset (%u) > size (%u)\n", offset, size); - _assert(false); - } //else fprintf(stderr, "offset (%zu) <= size (%zu)\n", offset, size); - - memset(blob + offset, 0, size - offset); } } - if (flag_S) { - uint8_t *top = reinterpret_cast(fat_header.GetBase()); - size_t size = fat_header.GetSize(); - - char *copy; - asprintf(©, "%s.%s.cp", dir, base); - FILE *file = fopen(copy, "w+"); - size_t writ = fwrite(top, 1, size, file); - _assert(writ == size); - fclose(file); - - _syscall(unlink(temp)); - free(temp); - temp = copy; - } - - if (temp != NULL) { - struct stat info; - _syscall(stat(path, &info)); - _syscall(chown(temp, info.st_uid, info.st_gid)); - _syscall(chmod(temp, info.st_mode)); - _syscall(unlink(path)); - _syscall(rename(temp, path)); - free(temp); - } - - free(dir); ++filei; } catch (const char *) { ++filee; @@ -1245,3 +2671,4 @@ int main(int argc, const char *argv[]) { return filee; } +#endif