-/* JocStrap - Java/Objective-C Bootstrap
- * Copyright (C) 2007 Jay Freeman (saurik)
+/* ldid - (Mach-O) Link-Loader Identity Editor
+ * Copyright (C) 2007-2015 Jay Freeman (saurik)
*/
+/* GNU Affero General Public License, Version 3 {{{ */
/*
- * Redistribution and use in source and binary
- * forms, with or without modification, are permitted
- * provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the
- * above copyright notice, this list of conditions
- * and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions
- * and the following disclaimer in the documentation
- * and/or other materials provided with the
- * distribution.
- * 3. The name of the author may not be used to endorse
- * or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#include "minimal/stdlib.h"
-#include "minimal/string.h"
-#include "minimal/mapping.h"
-
-#include "sha1.h"
-
+ * 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 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 <http://www.gnu.org/licenses/>.
+**/
+/* }}} */
+
+#include <cstdio>
+#include <cstdlib>
#include <cstring>
+#include <fstream>
+#include <iostream>
+#include <memory>
+#include <set>
+#include <sstream>
#include <string>
#include <vector>
-#include <sys/wait.h>
-#include <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <regex.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <sys/mman.h>
#include <sys/stat.h>
+#include <sys/types.h>
+
+#ifndef LDID_NOSMIME
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/pkcs7.h>
+#include <openssl/pkcs12.h>
+#endif
+
+#ifdef __APPLE__
+#include <CommonCrypto/CommonDigest.h>
+#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
+#else
+#include <openssl/sha.h>
+#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
+#endif
+
+#ifndef LDID_NOPLIST
+#include <plist/plist.h>
+#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 <typename Type_>
+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 <typename Function_>
+class Scope :
+ public _Scope
+{
+ private:
+ Function_ function_;
+
+ public:
+ Scope(const Function_ &function) :
+ function_(function)
+ {
+ }
+
+ ~Scope() {
+ function_();
+ }
+};
+
+template <typename Function_>
+Scope<Function_> _scope(const Function_ &function) {
+ return Scope<Function_>(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;
#define MH_DYLDLINK 0x4
+#define MH_OBJECT 0x1
#define MH_EXECUTE 0x2
#define MH_DYLIB 0x6
#define MH_BUNDLE 0x8
uint32_t cmdsize;
} _packed;
-#define LC_REQ_DYLD uint32_t(0x80000000)
-
-#define LC_SEGMENT uint32_t(0x01)
-#define LC_LOAD_DYLIB uint32_t(0x0c)
-#define LC_ID_DYLIB uint32_t(0x0d)
-#define LC_UUID uint32_t(0x1b)
-#define LC_CODE_SIGNATURE uint32_t(0x1d)
-#define LC_REEXPORT_DYLIB uint32_t(0x1f | LC_REQ_DYLD)
+#define LC_REQ_DYLD uint32_t(0x80000000)
+
+#define LC_SEGMENT uint32_t(0x01)
+#define LC_SYMTAB uint32_t(0x02)
+#define LC_DYSYMTAB uint32_t(0x0b)
+#define LC_LOAD_DYLIB uint32_t(0x0c)
+#define LC_ID_DYLIB uint32_t(0x0d)
+#define LC_SEGMENT_64 uint32_t(0x19)
+#define LC_UUID uint32_t(0x1b)
+#define LC_CODE_SIGNATURE uint32_t(0x1d)
+#define LC_SEGMENT_SPLIT_INFO uint32_t(0x1e)
+#define LC_REEXPORT_DYLIB uint32_t(0x1f | LC_REQ_DYLD)
+#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;
uint8_t uuid[16];
} _packed;
+struct symtab_command {
+ uint32_t cmd;
+ uint32_t cmdsize;
+ uint32_t symoff;
+ uint32_t nsyms;
+ uint32_t stroff;
+ uint32_t strsize;
+} _packed;
+
+struct dyld_info_command {
+ uint32_t cmd;
+ uint32_t cmdsize;
+ uint32_t rebase_off;
+ uint32_t rebase_size;
+ uint32_t bind_off;
+ uint32_t bind_size;
+ uint32_t weak_bind_off;
+ uint32_t weak_bind_size;
+ uint32_t lazy_bind_off;
+ uint32_t lazy_bind_size;
+ uint32_t export_off;
+ uint32_t export_size;
+} _packed;
+
+struct dysymtab_command {
+ uint32_t cmd;
+ uint32_t cmdsize;
+ uint32_t ilocalsym;
+ uint32_t nlocalsym;
+ uint32_t iextdefsym;
+ uint32_t nextdefsym;
+ uint32_t iundefsym;
+ uint32_t nundefsym;
+ uint32_t tocoff;
+ uint32_t ntoc;
+ uint32_t modtaboff;
+ uint32_t nmodtab;
+ uint32_t extrefsymoff;
+ uint32_t nextrefsyms;
+ uint32_t indirectsymoff;
+ uint32_t nindirectsyms;
+ uint32_t extreloff;
+ uint32_t nextrel;
+ uint32_t locreloff;
+ uint32_t nlocrel;
+} _packed;
+
+struct dylib_table_of_contents {
+ uint32_t symbol_index;
+ uint32_t module_index;
+} _packed;
+
+struct dylib_module {
+ uint32_t module_name;
+ uint32_t iextdefsym;
+ uint32_t nextdefsym;
+ uint32_t irefsym;
+ uint32_t nrefsym;
+ uint32_t ilocalsym;
+ uint32_t nlocalsym;
+ uint32_t iextrel;
+ uint32_t nextrel;
+ uint32_t iinit_iterm;
+ uint32_t ninit_nterm;
+ uint32_t objc_module_info_addr;
+ uint32_t objc_module_info_size;
+} _packed;
+
+struct dylib_reference {
+ uint32_t isym:24;
+ uint32_t flags:8;
+} _packed;
+
+struct relocation_info {
+ int32_t r_address;
+ uint32_t r_symbolnum:24;
+ uint32_t r_pcrel:1;
+ uint32_t r_length:2;
+ uint32_t r_extern:1;
+ uint32_t r_type:4;
+} _packed;
+
+struct nlist {
+ union {
+ char *n_name;
+ int32_t n_strx;
+ } n_un;
+
+ uint8_t n_type;
+ uint8_t n_sect;
+ uint8_t n_desc;
+ uint32_t n_value;
+} _packed;
+
struct segment_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t initprot;
uint32_t nsects;
uint32_t flags;
-};
+} _packed;
+
+struct segment_command_64 {
+ uint32_t cmd;
+ uint32_t cmdsize;
+ char segname[16];
+ uint64_t vmaddr;
+ uint64_t vmsize;
+ uint64_t fileoff;
+ uint64_t filesize;
+ uint32_t maxprot;
+ uint32_t initprot;
+ uint32_t nsects;
+ uint32_t flags;
+} _packed;
struct section {
char sectname[16];
uint32_t flags;
uint32_t reserved1;
uint32_t reserved2;
-};
+} _packed;
+
+struct section_64 {
+ char sectname[16];
+ char segname[16];
+ uint64_t addr;
+ uint64_t size;
+ uint32_t offset;
+ uint32_t align;
+ uint32_t reloff;
+ uint32_t nreloc;
+ uint32_t flags;
+ uint32_t reserved1;
+ uint32_t reserved2;
+ uint32_t reserved3;
+} _packed;
struct linkedit_data_command {
uint32_t cmd;
uint32_t datasize;
} _packed;
-uint16_t Swap_(uint16_t value) {
+struct encryption_info_command {
+ uint32_t cmd;
+ uint32_t cmdsize;
+ uint32_t cryptoff;
+ uint32_t cryptsize;
+ uint32_t cryptid;
+} _packed;
+
+#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
+
+inline void get(std::streambuf &stream, void *data, size_t size) {
+ _assert(stream.sgetn(static_cast<char *>(data), size) == size);
+}
+
+inline void put(std::streambuf &stream, const void *data, size_t size) {
+ _assert(stream.sputn(static_cast<const char *>(data), size) == size);
+}
+
+inline void pad(std::streambuf &stream, size_t size) {
+ char padding[size];
+ memset(padding, 0, size);
+ put(stream, padding, size);
+}
+
+template <typename Type_>
+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) |
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<uint16_t>(value));
}
-int32_t Swap_(int32_t value) {
+static inline int32_t Swap_(int32_t value) {
return Swap_(static_cast<uint32_t>(value));
}
-bool little_(true);
+static inline int64_t Swap_(int64_t value) {
+ return Swap_(static_cast<uint64_t>(value));
+}
+
+static bool little_(true);
-uint16_t Swap(uint16_t value) {
+static inline uint16_t Swap(uint16_t value) {
return little_ ? Swap_(value) : value;
}
-uint32_t Swap(uint32_t value) {
+static inline uint32_t Swap(uint32_t value) {
return little_ ? Swap_(value) : value;
}
-int16_t Swap(int16_t value) {
+static inline uint64_t Swap(uint64_t value) {
+ return little_ ? Swap_(value) : value;
+}
+
+static inline int16_t Swap(int16_t value) {
return Swap(static_cast<uint16_t>(value));
}
-int32_t Swap(int32_t value) {
+static inline int32_t Swap(int32_t value) {
return Swap(static_cast<uint32_t>(value));
}
-template <typename Target_>
-class Pointer;
-
-class Framework {
- private:
- void *base_;
- size_t size_;
-
- struct mach_header *mach_header_;
- struct load_command *load_command_;
+static inline int64_t Swap(int64_t value) {
+ return Swap(static_cast<uint64_t>(value));
+}
+class Swapped {
+ protected:
bool swapped_;
- bool bits64_;
+
+ Swapped() :
+ swapped_(false)
+ {
+ }
public:
- uint16_t Swap(uint16_t value) const {
- return swapped_ ? Swap_(value) : value;
+ Swapped(bool swapped) :
+ swapped_(swapped)
+ {
}
- uint32_t Swap(uint32_t value) const {
+ template <typename Type_>
+ Type_ Swap(Type_ value) const {
return swapped_ ? Swap_(value) : value;
}
+};
+
+class Data :
+ public Swapped
+{
+ private:
+ void *base_;
+ size_t size_;
- int16_t Swap(int16_t value) const {
- return Swap(static_cast<uint16_t>(value));
+ public:
+ Data(void *base, size_t size) :
+ base_(base),
+ size_(size)
+ {
}
- int32_t Swap(int32_t value) const {
- return Swap(static_cast<uint32_t>(value));
+ void *GetBase() const {
+ return base_;
}
- Framework(const char *framework_path) :
- swapped_(false)
- {
- base_ = map(framework_path, 0, _not(size_t), &size_, false);
- fat_header *fat_header = reinterpret_cast<struct fat_header *>(base_);
+ size_t GetSize() const {
+ return size_;
+ }
+};
- if (Swap(fat_header->magic) == FAT_CIGAM) {
- swapped_ = !swapped_;
- goto fat;
- } else if (Swap(fat_header->magic) != FAT_MAGIC)
- mach_header_ = (mach_header *) base_;
- else fat: {
- size_t fat_narch = Swap(fat_header->nfat_arch);
- fat_arch *fat_arch = reinterpret_cast<struct fat_arch *>(fat_header + 1);
- size_t arch;
- for (arch = 0; arch != fat_narch; ++arch) {
- uint32_t arch_offset = Swap(fat_arch->offset);
- mach_header_ = (mach_header *) ((uint8_t *) base_ + arch_offset);
- goto found;
- ++fat_arch;
- }
+class MachHeader :
+ public Data
+{
+ private:
+ bool bits64_;
- _assert(false);
- }
+ struct mach_header *mach_header_;
+ struct load_command *load_command_;
+
+ public:
+ MachHeader(void *base, size_t size) :
+ Data(base, size)
+ {
+ mach_header_ = (mach_header *) base;
- found:
switch (Swap(mach_header_->magic)) {
case MH_CIGAM:
swapped_ = !swapped_;
);
}
- struct mach_header *operator ->() const {
- return mach_header_;
+ bool Bits64() const {
+ return bits64_;
}
- void *GetBase() {
- return base_;
+ struct mach_header *operator ->() const {
+ return mach_header_;
}
- size_t GetSize() const {
- return size_;
+ 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;
}
- std::vector<struct load_command *> GetLoadCommands() {
+ struct load_command *GetLoadCommand() const {
+ return load_command_;
+ }
+
+ std::vector<struct load_command *> GetLoadCommands() const {
std::vector<struct load_command *> load_commands;
struct load_command *load_command = load_command_;
return load_commands;
}
- std::vector<segment_command *> GetSegments(const char *segment_name) {
- std::vector<struct segment_command *> segment_commands;
-
+ void ForSection(const ldid::Functor<void (const char *, const char *, void *, size_t)> &code) const {
_foreach (load_command, GetLoadCommands())
- if (Swap((*load_command)->cmd) == LC_SEGMENT) {
- segment_command *segment_command = reinterpret_cast<struct segment_command *>(*load_command);
- if (strncmp(segment_command->segname, segment_name, 16) == 0)
- segment_commands.push_back(segment_command);
- }
-
- return segment_commands;
- }
-
- std::vector<section *> GetSections(const char *segment_name, const char *section_name) {
- std::vector<section *> 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;
+ switch (Swap(load_command->cmd)) {
+ case LC_SEGMENT: {
+ auto segment(reinterpret_cast<struct segment_command *>(load_command));
+ code(segment->segname, NULL, GetOffset<void>(segment->fileoff), segment->filesize);
+ auto section(reinterpret_cast<struct section *>(segment + 1));
+ for (uint32_t i(0), e(Swap(segment->nsects)); i != e; ++i, ++section)
+ code(segment->segname, section->sectname, GetOffset<void>(segment->fileoff + section->offset), section->size);
+ } break;
+
+ case LC_SEGMENT_64: {
+ auto segment(reinterpret_cast<struct segment_command_64 *>(load_command));
+ code(segment->segname, NULL, GetOffset<void>(segment->fileoff), segment->filesize);
+ auto section(reinterpret_cast<struct section_64 *>(segment + 1));
+ for (uint32_t i(0), e(Swap(segment->nsects)); i != e; ++i, ++section)
+ code(segment->segname, section->sectname, GetOffset<void>(segment->fileoff + section->offset), section->size);
+ } break;
}
- }
-
- return sections;
}
template <typename Target_>
- Pointer<Target_> GetPointer(uint32_t address, const char *segment_name = NULL) {
- 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<Target_>(this, reinterpret_cast<Target_ *>(address - Swap(section->addr) + Swap(section->offset) + (char *) mach_header_));
- }
- }
- }
+ Target_ *GetOffset(uint32_t offset) const {
+ return reinterpret_cast<Target_ *>(offset + (uint8_t *) mach_header_);
+ }
+};
- next_command:
- load_command = (struct load_command *) ((char *) load_command + Swap(load_command->cmdsize));
- }
+class FatMachHeader :
+ public MachHeader
+{
+ private:
+ fat_arch *fat_arch_;
- return Pointer<Target_>(this);
+ public:
+ FatMachHeader(void *base, size_t size, fat_arch *fat_arch) :
+ MachHeader(base, size),
+ fat_arch_(fat_arch)
+ {
}
- template <typename Target_>
- Pointer<Target_> GetOffset(uint32_t offset) {
- return Pointer<Target_>(this, reinterpret_cast<Target_ *>(offset + (uint8_t *) mach_header_));
+ fat_arch *GetFatArch() const {
+ return fat_arch_;
}
};
-template <typename Target_>
-class Pointer {
+class FatHeader :
+ public Data
+{
private:
- const Framework *framework_;
- const Target_ *pointer_;
+ fat_header *fat_header_;
+ std::vector<FatMachHeader> mach_headers_;
public:
- Pointer(const Framework *framework = NULL, const Target_ *pointer = NULL) :
- framework_(framework),
- pointer_(pointer)
+ FatHeader(void *base, size_t size) :
+ Data(base, size)
{
+ fat_header_ = reinterpret_cast<struct fat_header *>(base);
+
+ if (Swap(fat_header_->magic) == FAT_CIGAM) {
+ swapped_ = !swapped_;
+ goto fat;
+ } else if (Swap(fat_header_->magic) != FAT_MAGIC) {
+ fat_header_ = NULL;
+ mach_headers_.push_back(FatMachHeader(base, size, NULL));
+ } else fat: {
+ size_t fat_narch = Swap(fat_header_->nfat_arch);
+ fat_arch *fat_arch = reinterpret_cast<struct fat_arch *>(fat_header_ + 1);
+ size_t arch;
+ for (arch = 0; arch != fat_narch; ++arch) {
+ uint32_t arch_offset = Swap(fat_arch->offset);
+ uint32_t arch_size = Swap(fat_arch->size);
+ mach_headers_.push_back(FatMachHeader((uint8_t *) base + arch_offset, arch_size, fat_arch));
+ ++fat_arch;
+ }
+ }
}
- operator const Target_ *() const {
- return pointer_;
+ std::vector<FatMachHeader> &GetMachHeaders() {
+ return mach_headers_;
}
- const Target_ *operator ->() const {
- return pointer_;
+ bool IsFat() const {
+ return fat_header_ != NULL;
}
- Pointer<Target_> &operator ++() {
- ++pointer_;
- return *this;
+ struct fat_header *operator ->() const {
+ return fat_header_;
}
- template <typename Value_>
- Value_ Swap(Value_ value) {
- return framework_->Swap(value);
+ operator struct fat_header *() const {
+ return fat_header_;
}
};
-#define CSMAGIC_CODEDIRECTORY uint32_t(0xfade0c02)
-#define CSMAGIC_EMBEDDED_SIGNATURE uint32_t(0xfade0cc0)
-#define CSMAGIC_ENTITLEMENTS uint32_t(0xfade7171)
+#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)
+
+#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 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;
} _packed;
struct CodeDirectory {
- struct Blob blob;
uint32_t version;
uint32_t flags;
uint32_t hashOffset;
uint32_t spare2;
} _packed;
+#ifndef LDID_NOFLAGT
extern "C" uint32_t hash(uint8_t *k, uint32_t length, uint32_t initval);
+#endif
-#define CODESIGN_ALLOCATE "arm-apple-darwin9-codesign_allocate"
+static void sha1(uint8_t *hash, const void *data, size_t size) {
+ LDID_SHA1(static_cast<const uint8_t *>(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<char> &hash, const void *data, size_t size) {
+ hash.resize(LDID_SHA1_DIGEST_LENGTH);
+ sha1(reinterpret_cast<uint8_t *>(hash.data()), data, size);
}
-int main(int argc, const char *argv[]) {
- union {
- uint16_t word;
- uint8_t byte[2];
- } endian = {1};
+struct CodesignAllocation {
+ 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)
+ {
+ }
+};
- little_ = endian.byte[0];
+#ifndef LDID_NOTOOLS
+class File {
+ private:
+ int file_;
- bool flag_R(false);
- bool flag_t(false);
- bool flag_p(false);
- bool flag_u(false);
- bool flag_e(false);
+ public:
+ File() :
+ file_(-1)
+ {
+ }
- bool flag_T(false);
+ ~File() {
+ if (file_ != -1)
+ _syscall(close(file_));
+ }
- bool flag_S(false);
- bool flag_s(false);
+ void open(const char *path, int flags) {
+ _assert(file_ == -1);
+ file_ = _syscall(::open(path, flags));
+ }
- bool timeh(false);
- uint32_t timev(0);
+ int file() const {
+ return file_;
+ }
+};
- const void *xmld(NULL);
- size_t xmls(0);
+class Map {
+ private:
+ File file_;
+ void *data_;
+ size_t size_;
- uintptr_t noffset(_not(uintptr_t));
- uintptr_t woffset(_not(uintptr_t));
+ void clear() {
+ if (data_ == NULL)
+ return;
+ _syscall(munmap(data_, size_));
+ data_ = NULL;
+ size_ = 0;
+ }
- std::vector<std::string> files;
+ public:
+ Map() :
+ data_(NULL),
+ size_(0)
+ {
+ }
- if (argc == 1) {
- fprintf(stderr, "usage: %s -S[entitlements.xml] <binary>\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);
+ Map(const std::string &path, int oflag, int pflag, int mflag) :
+ Map()
+ {
+ open(path, oflag, pflag, mflag);
}
- 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 't': flag_t = true; break;
- case 'u': flag_u = true; break;
- case 'p': flag_p = true; break;
- case 'e': flag_e = true; break;
+ Map(const std::string &path, bool edit) :
+ Map()
+ {
+ open(path, edit);
+ }
- case 's':
- _assert(!flag_S);
- flag_s = true;
- break;
+ ~Map() {
+ clear();
+ }
- 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;
+ bool empty() const {
+ return data_ == NULL;
+ }
- 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;
+ void open(const std::string &path, int oflag, int pflag, int mflag) {
+ clear();
- case 'n': {
- char *arge;
- noffset = strtoul(argv[argi] + 2, &arge, 0);
- _assert(arge == argv[argi] + strlen(argv[argi]));
- } break;
+ file_.open(path.c_str(), oflag);
+ int file(file_.file());
- case 'w': {
- char *arge;
- woffset = strtoul(argv[argi] + 2, &arge, 0);
- _assert(arge == argv[argi] + strlen(argv[argi]));
- } break;
+ struct stat stat;
+ _syscall(fstat(file, &stat));
+ size_ = stat.st_size;
- default:
- goto usage;
- break;
- }
+ data_ = _syscall(mmap(NULL, size_, pflag, mflag, file, 0));
+ }
- if (files.empty()) usage: {
- exit(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);
}
- 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;
+ void *data() const {
+ return data_;
+ }
+
+ size_t size() const {
+ return size_;
+ }
+
+ operator std::string() const {
+ return std::string(static_cast<char *>(data_), size_);
+ }
+};
+#endif
- if (base != NULL)
- dir = strndup_(path, base++ - path + 1);
+namespace ldid {
+
+static void Allocate(const void *idata, size_t isize, std::streambuf &output, const Functor<size_t (const MachHeader &, size_t)> &allocate, const Functor<size_t (const MachHeader &, std::streambuf &output, size_t, const std::string &, const char *)> &save) {
+ FatHeader source(const_cast<void *>(idata), isize);
+
+ size_t offset(0);
+ if (source.IsFat())
+ offset += sizeof(fat_header) + sizeof(fat_arch) * source.Swap(source->nfat_arch);
+
+ std::vector<CodesignAllocation> 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<struct linkedit_data_command *>(load_command);
+ else if (cmd == LC_SYMTAB)
+ symtab = reinterpret_cast<struct symtab_command *>(load_command);
+ }
+
+ size_t size;
+ if (signature == NULL)
+ size = mach_header.GetSize();
else {
- dir = strdup("");
- base = path;
+ size = mach_header.Swap(signature->dataoff);
+ _assert(size <= mach_header.GetSize());
}
- if (flag_S) {
- asprintf(&temp, "%s.%s.cs", dir, base);
- const char *allocate = getenv("CODESIGN_ALLOCATE");
- if (allocate == NULL)
- allocate = "codesign_allocate";
-
- size_t size = _not(size_t);
- const char *arch; {
- Framework framework(path);
- framework->flags = framework.Swap(framework.Swap(framework->flags) | MH_DYLDLINK);
-
- _foreach (load_command, framework.GetLoadCommands()) {
- uint32_t cmd(framework.Swap((*load_command)->cmd));
- if (cmd == LC_CODE_SIGNATURE) {
- struct linkedit_data_command *signature = reinterpret_cast<struct linkedit_data_command *>(*load_command);
- size = framework.Swap(signature->dataoff);
- _assert(size < framework.GetSize());
- 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;
+ }
- if (size == _not(size_t))
- size = framework.GetSize();
-
- switch (framework.GetCPUType()) {
- case 7: switch (framework.GetCPUSubtype()) {
- case 3: arch = "i386"; break;
- default: arch = NULL; break;
- } break;
-
- case 12: switch (framework.GetCPUSubtype()) {
- case 0: arch = "arm"; break;
- case 6: arch = "armv6"; break;
- case 9: arch = "armv7"; break;
- default: arch = NULL; break;
- } break;
-
- case 18: switch (framework.GetCPUSubtype()) {
- case 10: arch = "ppc7400"; break;
- default: arch = NULL; break;
- } break;
-
- case 16777223: switch (framework.GetCPUSubtype()) {
- case 3: arch = "x86_64"; break;
- default: arch = NULL; break;
- } break;
-
- case 16777234: switch (framework.GetCPUSubtype()) {
- case 0: arch = "ppc64"; break;
- default: arch = NULL; break;
- } break;
-
- default: arch = NULL; break;
- }
- }
+ 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:
+ align = 0x0;
+ break;
+ }
- _assert(arch != NULL);
+ offset = Align(offset, 1 << align);
- pid_t pid = fork();
- _syscall(pid);
- if (pid == 0) {
- char *ssize;
- asprintf(&ssize, "%u", (sizeof(struct SuperBlob) + 2 * sizeof(struct BlobIndex) + sizeof(struct CodeDirectory) + strlen(base) + 1 + ((xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS) + (size + 0x1000 - 1) / 0x1000) * 0x14 + 0xc + (xmld == NULL ? 0 : 0x10 + xmls) + 15) / 16 * 16);
- //printf("%s -i %s -a %s %s -o %s\n", allocate, path, arch, ssize, temp);
- execlp(allocate, allocate, "-i", path, "-a", arch, ssize, "-o", temp, NULL);
- _assert(false);
+ uint32_t limit(size);
+ if (alloc != 0)
+ limit = Align(limit, 0x10);
+
+ allocations.push_back(CodesignAllocation(mach_header, offset, size, limit, alloc, align));
+ offset += size + alloc;
+ offset = Align(offset, 0x10);
+ }
+
+ 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);
+ }
+ }
+
+ _foreach (allocation, allocations) {
+ auto &mach_header(allocation.mach_header_);
+
+ pad(output, allocation.offset_ - position);
+ position = allocation.offset_;
+
+ std::vector<std::string> commands;
+
+ _foreach (load_command, mach_header.GetLoadCommands()) {
+ std::string copy(reinterpret_cast<const char *>(load_command), load_command->cmdsize);
+
+ switch (mach_header.Swap(load_command->cmd)) {
+ case LC_CODE_SIGNATURE:
+ continue;
+ break;
+
+ case LC_SEGMENT: {
+ auto segment_command(reinterpret_cast<struct segment_command *>(©[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<struct segment_command_64 *>(©[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;
}
- int status;
- _syscall(waitpid(pid, &status, 0));
- _assert(WIFEXITED(status));
- _assert(WEXITSTATUS(status) == 0);
+ commands.push_back(copy);
}
- Framework framework(temp == NULL ? path : temp);
- struct linkedit_data_command *signature(NULL);
+ 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<const char *>(&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 (flag_p)
- printf("path%zu='%s'\n", filei, file->c_str());
+ 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);
+ }
- if (woffset != _not(uintptr_t)) {
- Pointer<uint32_t> wvalue(framework.GetPointer<uint32_t>(woffset));
- if (wvalue == NULL)
- printf("(null) %p\n", reinterpret_cast<void *>(woffset));
- else
- printf("0x%.08x\n", *wvalue);
+ _foreach(command, commands) {
+ put(output, command.data(), command.size());
+ put(altern, command.data(), command.size());
+ position += command.size();
}
- if (noffset != _not(uintptr_t))
- printf("%s\n", &*framework.GetPointer<char>(noffset));
+ uint32_t before(mach_header.Swap(mach_header->sizeofcmds));
+ if (before > after) {
+ pad(output, before - after);
+ pad(altern, before - after);
+ position += before - after;
+ }
- _foreach (load_command, framework.GetLoadCommands()) {
- uint32_t cmd(framework.Swap((*load_command)->cmd));
+ auto top(reinterpret_cast<char *>(mach_header.GetBase()));
- if (flag_R && cmd == LC_REEXPORT_DYLIB)
- (*load_command)->cmd = framework.Swap(LC_LOAD_DYLIB);
- else if (cmd == LC_CODE_SIGNATURE)
- signature = reinterpret_cast<struct linkedit_data_command *>(*load_command);
- else if (cmd == LC_UUID) {
- volatile struct uuid_command *uuid_command(reinterpret_cast<struct uuid_command *>(*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) {
- volatile struct dylib_command *dylib_command(reinterpret_cast<struct dylib_command *>(*load_command));
+ std::string overlap(altern.str());
+ overlap.append(top + overlap.size(), Align(overlap.size(), 0x1000) - overlap.size());
- if (flag_t)
- printf("time%zu=0x%.8x\n", filei, framework.Swap(dylib_command->dylib.timestamp));
+ put(output, top + (position - begin), allocation.size_ - (position - begin));
+ position = begin + allocation.size_;
- if (flag_T) {
- uint32_t timed;
+ pad(output, allocation.limit_ - allocation.size_);
+ position += allocation.limit_ - allocation.size_;
- if (!timeh)
- timed = timev;
- else {
- dylib_command->dylib.timestamp = 0;
- timed = hash(reinterpret_cast<uint8_t *>(framework.GetBase()), framework.GetSize(), timev);
- }
+ size_t saved(save(mach_header, output, allocation.limit_, overlap, top));
+ if (allocation.alloc_ > saved)
+ pad(output, allocation.alloc_ - saved);
+ position += allocation.alloc_;
+ }
+}
- dylib_command->dylib.timestamp = framework.Swap(timed);
- }
+}
+
+typedef std::map<uint32_t, std::string> Blobs;
+
+static void insert(Blobs &blobs, uint32_t slot, const std::stringbuf &buffer) {
+ auto value(buffer.str());
+ std::swap(blobs[slot], value);
+}
+
+static void 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<char *>(&blob), sizeof(blob));
+ std::swap(blobs[slot], value);
+}
+
+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<char *>(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 HashBuffer :
+ public std::streambuf
+{
+ private:
+ std::vector<char> &hash_;
+ LDID_SHA1_CTX context_;
+
+ public:
+ HashBuffer(std::vector<char> &hash) :
+ hash_(hash)
+ {
+ LDID_SHA1_Init(&context_);
+ }
+
+ ~HashBuffer() {
+ hash_.resize(LDID_SHA1_DIGEST_LENGTH);
+ LDID_SHA1_Final(reinterpret_cast<uint8_t *>(hash_.data()), &context_);
+ }
+
+ virtual std::streamsize xsputn(const char_type *data, std::streamsize size) {
+ LDID_SHA1_Update(&context_, 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(std::vector<char> &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 {
+
+void Sign(const void *idata, size_t isize, std::streambuf &output, const std::string &identifier, const std::string &entitlements, const std::string &key, const Slots &slots) {
+ 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);
+ alloc += 0xc;
+
+ 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 (!key.empty()) {
+ alloc += sizeof(struct BlobIndex);
+ alloc += sizeof(struct Blob);
+ // XXX: this is just a "sufficiently large number"
+ alloc += 0x3000;
+ }
+
+ _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;
+
+ Blobs requirements;
+ put(data, CSMAGIC_REQUIREMENTS, requirements);
+
+ 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(0x00020001));
+ directory.flags = Swap(uint32_t(0));
+ directory.hashOffset = Swap(uint32_t(sizeof(Blob) + sizeof(CodeDirectory) + identifier.size() + 1 + LDID_SHA1_DIGEST_LENGTH * special));
+ directory.identOffset = Swap(uint32_t(sizeof(Blob) + sizeof(CodeDirectory)));
+ 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));
+ put(data, &directory, sizeof(directory));
+
+ put(data, identifier.c_str(), identifier.size() + 1);
+
+ uint8_t storage[special + normal][LDID_SHA1_DIGEST_LENGTH];
+ uint8_t (*hashes)[LDID_SHA1_DIGEST_LENGTH] = storage + special;
+
+ memset(storage, 0, sizeof(*storage) * special);
+
+ _foreach (blob, blobs) {
+ auto local(reinterpret_cast<const Blob *>(&blob.second[0]));
+ sha1((uint8_t *) (hashes - blob.first), 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], (PageSize_ * i < overlap.size() ? overlap.data() : top) + PageSize_ * i, PageSize_);
+ if (normal != 0)
+ sha1(hashes[normal - 1], top + PageSize_ * (normal - 1), ((limit - 1) % PageSize_) + 1);
+
+ put(data, storage, sizeof(storage));
+
+ insert(blobs, CSSLOT_CODEDIRECTORY, CSMAGIC_CODEDIRECTORY, data);
}
- if (flag_e) {
- _assert(signature != NULL);
+#ifndef LDID_NOSMIME
+ if (!key.empty()) {
+ std::stringbuf data;
+ const std::string &sign(blobs[CSSLOT_CODEDIRECTORY]);
- uint32_t data = framework.Swap(signature->dataoff);
- uint32_t size = framework.Swap(signature->datasize);
+ Stuff stuff(key);
+ Buffer bio(sign);
- uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
- uint8_t *blob = top + data;
- struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
+ Signature signature(stuff, sign);
+ Buffer result(signature);
+ std::string value(result);
+ put(data, value.data(), value.size());
- for (size_t index(0); index != Swap(super->count); ++index)
- if (Swap(super->index[index].type) == CSSLOT_ENTITLEMENTS) {
- uint32_t begin = Swap(super->index[index].offset);
- struct Blob *entitlements = reinterpret_cast<struct Blob *>(blob + begin);
- fwrite(entitlements + 1, 1, Swap(entitlements->length) - sizeof(struct Blob), stdout);
- }
+ insert(blobs, CSSLOT_SIGNATURESLOT, CSMAGIC_BLOBWRAPPER, data);
}
+#endif
- if (flag_s) {
- _assert(signature != NULL);
+ return put(output, CSMAGIC_EMBEDDED_SIGNATURE, blobs);
+ }));
+}
- uint32_t data = framework.Swap(signature->dataoff);
- uint32_t size = framework.Swap(signature->datasize);
+#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;
+ }));
+}
- uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
- uint8_t *blob = top + data;
- struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
+std::string DiskFolder::Path(const std::string &path) {
+ return path_ + "/" + path;
+}
- 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<struct CodeDirectory *>(blob + begin);
+DiskFolder::DiskFolder(const std::string &path) :
+ path_(path)
+{
+}
- uint8_t (*hashes)[20] = reinterpret_cast<uint8_t (*)[20]>(blob + begin + Swap(directory->hashOffset));
- uint32_t pages = Swap(directory->nCodeSlots);
+DiskFolder::~DiskFolder() {
+ if (!std::uncaught_exception())
+ for (const auto &commit : commit_)
+ Commit(commit.first, commit.second);
+}
- 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);
- }
+void DiskFolder::Find(const std::string &root, const std::string &base, const Functor<void (const std::string &, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &)>&code) {
+ 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.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;
+ default:
+ _assert_(false, "d_type=%u", child->d_type);
}
+#endif
+
+ if (directory)
+ Find(root, base + name + "/", code);
+ else
+ code(base + name, fun([&](const Functor<void (std::streambuf &, std::streambuf &)> &code) {
+ std::string access(root + base + name);
+ _assert_(Open(access, fun([&](std::streambuf &data) {
+ NullBuffer save;
+ code(data, save);
+ })), "open(): %s", access.c_str());
+ }));
+ }
+}
+
+void DiskFolder::Save(const std::string &path, const Functor<void (std::streambuf &)> &code) {
+ std::filebuf save;
+ auto from(Path(path));
+ commit_[from] = Temporary(save, from);
+ code(save);
+}
+
+bool DiskFolder::Open(const std::string &path, const Functor<void (std::streambuf &)> &code) {
+ std::filebuf data;
+ auto result(data.open(Path(path).c_str(), std::ios::binary | std::ios::in));
+ if (result == NULL)
+ return false;
+ _assert(result == &data);
+ code(data);
+ return true;
+}
+
+void DiskFolder::Find(const std::string &path, const Functor<void (const std::string &, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &)>&code) {
+ Find(path, "", code);
+}
+#endif
+
+SubFolder::SubFolder(Folder &parent, const std::string &path) :
+ parent_(parent),
+ path_(path)
+{
+}
+
+void SubFolder::Save(const std::string &path, const Functor<void (std::streambuf &)> &code) {
+ return parent_.Save(path_ + path, code);
+}
+
+bool SubFolder::Open(const std::string &path, const Functor<void (std::streambuf &)> &code) {
+ return parent_.Open(path_ + path, code);
+}
+
+void SubFolder::Find(const std::string &path, const Functor<void (const std::string &, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &)> &code) {
+ return parent_.Find(path_ + path, code);
+}
+
+UnionFolder::UnionFolder(Folder &parent) :
+ parent_(parent)
+{
+}
+
+void UnionFolder::Save(const std::string &path, const Functor<void (std::streambuf &)> &code) {
+ return parent_.Save(path, code);
+}
+
+bool UnionFolder::Open(const std::string &path, const Functor<void (std::streambuf &)> &code) {
+ auto file(files_.find(path));
+ if (file == files_.end())
+ return parent_.Open(path, code);
+
+ auto &data(file->second);
+ data.pubseekpos(0, std::ios::in);
+ code(data);
+ return true;
+}
- if (flag_S) {
- _assert(signature != NULL);
+void UnionFolder::Find(const std::string &path, const Functor<void (const std::string &, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &)> &code) {
+ parent_.Find(path, fun([&](const std::string &name, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &save) {
+ if (files_.find(path + name) == files_.end())
+ code(name, save);
+ }));
+
+ for (auto &file : files_)
+ if (file.first.size() >= path.size() && file.first.substr(0, path.size()) == path)
+ code(file.first.substr(path.size()), fun([&](const Functor<void (std::streambuf &, std::streambuf &)> &code) {
+ parent_.Save(file.first, fun([&](std::streambuf &save) {
+ file.second.pubseekpos(0, std::ios::in);
+ code(file.second, save);
+ }));
+ }));
+}
- uint32_t data = framework.Swap(signature->dataoff);
- uint32_t size = framework.Swap(signature->datasize);
+#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;
+}
- uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
- uint8_t *blob = top + data;
- struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
- super->blob.magic = Swap(CSMAGIC_EMBEDDED_SIGNATURE);
+#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;
+}
- uint32_t count = xmld == NULL ? 2 : 3;
- uint32_t offset = sizeof(struct SuperBlob) + count * sizeof(struct BlobIndex);
+static void plist_d(std::streambuf &buffer, const Functor<void (plist_t)> &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);
+}
- super->index[0].type = Swap(CSSLOT_CODEDIRECTORY);
- super->index[0].offset = Swap(offset);
+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,
+};
- uint32_t begin = offset;
- struct CodeDirectory *directory = reinterpret_cast<struct CodeDirectory *>(blob + begin);
- offset += sizeof(struct CodeDirectory);
+class Expression {
+ private:
+ regex_t regex_;
- 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));
+ public:
+ Expression(const std::string &code) {
+ _assert_(regcomp(®ex_, code.c_str(), REG_EXTENDED | REG_NOSUB) == 0, "regcomp()");
+ }
- directory->identOffset = Swap(offset - begin);
- strcpy(reinterpret_cast<char *>(blob + offset), base);
- offset += strlen(base) + 1;
+ ~Expression() {
+ regfree(®ex_);
+ }
- uint32_t special = xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS;
- directory->nSpecialSlots = Swap(special);
+ bool operator ()(const std::string &data) const {
+ auto value(regexec(®ex_, data.c_str(), 0, NULL, 0));
+ if (value == REG_NOMATCH)
+ return false;
+ _assert_(value == 0, "regexec()");
+ return true;
+ }
+};
- uint8_t (*hashes)[20] = reinterpret_cast<uint8_t (*)[20]>(blob + offset);
- memset(hashes, 0, sizeof(*hashes) * special);
+struct Rule {
+ unsigned weight_;
+ Mode mode_;
+ std::string code_;
- offset += sizeof(*hashes) * special;
- hashes += special;
+ mutable std::auto_ptr<Expression> regex_;
- uint32_t pages = (data + 0x1000 - 1) / 0x1000;
- directory->nCodeSlots = Swap(pages);
+ Rule(unsigned weight, Mode mode, const std::string &code) :
+ weight_(weight),
+ mode_(mode),
+ code_(code)
+ {
+ }
- 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);
+ Rule(const Rule &rhs) :
+ weight_(rhs.weight_),
+ mode_(rhs.mode_),
+ code_(rhs.code_)
+ {
+ }
- directory->hashOffset = Swap(offset - begin);
- offset += sizeof(*hashes) * pages;
- directory->blob.length = Swap(offset - begin);
+ void Compile() const {
+ regex_.reset(new Expression(code_));
+ }
- super->index[1].type = Swap(CSSLOT_REQUIREMENTS);
- super->index[1].offset = Swap(offset);
+ bool operator ()(const std::string &data) const {
+ _assert(regex_.get() != NULL);
+ return (*regex_)(data);
+ }
- memcpy(blob + offset, "\xfa\xde\x0c\x01\x00\x00\x00\x0c\x00\x00\x00\x00", 0xc);
- offset += 0xc;
+ bool operator <(const Rule &rhs) const {
+ if (weight_ > rhs.weight_)
+ return true;
+ if (weight_ < rhs.weight_)
+ return false;
+ return mode_ > rhs.mode_;
+ }
+};
- if (xmld != NULL) {
- super->index[2].type = Swap(CSSLOT_ENTITLEMENTS);
- super->index[2].offset = Swap(offset);
+struct RuleCode {
+ bool operator ()(const Rule *lhs, const Rule *rhs) const {
+ return lhs->code_ < rhs->code_;
+ }
+};
- uint32_t begin = offset;
- struct Blob *entitlements = reinterpret_cast<struct Blob *>(blob + begin);
- offset += sizeof(struct Blob);
+#ifndef LDID_NOPLIST
+std::string Bundle(const std::string &root, Folder &folder, const std::string &key, std::map<std::string, std::vector<char>> &remote, const std::string &entitlements) {
+ std::string executable;
+ std::string identifier;
- memcpy(blob + offset, xmld, xmls);
- offset += xmls;
+ static const std::string info("Info.plist");
- entitlements->magic = Swap(CSMAGIC_ENTITLEMENTS);
- entitlements->length = Swap(offset - begin);
- }
+ _assert_(folder.Open(info, fun([&](std::streambuf &buffer) {
+ 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"));
+ }));
+ })), "open(): Info.plist");
- 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));
+ std::map<std::string, std::multiset<Rule>> versions;
+
+ auto &rules1(versions[""]);
+ auto &rules2(versions["2"]);
+
+ static const std::string signature("_CodeSignature/CodeResources");
+
+ folder.Open(signature, fun([&](std::streambuf &buffer) {
+ plist_d(buffer, fun([&](plist_t node) {
+ // XXX: maybe attempt to preserve existing rules
+ }));
+ }));
+
+ if (true) {
+ rules1.insert(Rule{1, NoMode, "^"});
+ rules1.insert(Rule{10000, OmitMode, "^(Frameworks/[^/]+\\.framework/|PlugIns/[^/]+\\.appex/|PlugIns/[^/]+\\.appex/Frameworks/[^/]+\\.framework/|())SC_Info/[^/]+\\.(sinf|supf|supp)$"});
+ rules1.insert(Rule{1000, OptionalMode, "^.*\\.lproj/"});
+ rules1.insert(Rule{1100, OmitMode, "^.*\\.lproj/locversion.plist$"});
+ 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($|/)"});
+ rules2.insert(Rule{20, NoMode, "^"});
+ rules2.insert(Rule{2000, OmitMode, "^(.*/)?\\.DS_Store$"});
+ rules2.insert(Rule{10000, OmitMode, "^(Frameworks/[^/]+\\.framework/|PlugIns/[^/]+\\.appex/|PlugIns/[^/]+\\.appex/Frameworks/[^/]+\\.framework/|())SC_Info/[^/]+\\.(sinf|supf|supp)$"});
+ rules2.insert(Rule{10, NestedMode, "^(Frameworks|SharedFrameworks|PlugIns|Plug-ins|XPCServices|Helpers|MacOS|Library/(Automator|Spotlight|LoginItems))/"});
+ rules2.insert(Rule{1, NoMode, "^.*"});
+ rules2.insert(Rule{1000, OptionalMode, "^.*\\.lproj/"});
+ rules2.insert(Rule{1100, OmitMode, "^.*\\.lproj/locversion.plist$"});
+ rules2.insert(Rule{20, OmitMode, "^Info\\.plist$"});
+ rules2.insert(Rule{20, OmitMode, "^PkgInfo$"});
+ 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<std::string, std::vector<char>> local;
+
+ static Expression nested("^PlugIns/[^/]*\\.appex/Info\\.plist$");
+
+ folder.Find("", fun([&](const std::string &name, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &code) {
+ if (!nested(name))
+ return;
+ auto bundle(root + Split(name).dir);
+ SubFolder subfolder(folder, bundle);
+ Bundle(bundle, subfolder, key, local, "");
+ }));
+
+ folder.Find("", fun([&](const std::string &name, const Functor<void (const Functor<void (std::streambuf &, std::streambuf &)> &)> &code) {
+ if (name == executable || name == signature)
+ return;
+
+ auto &hash(local[name]);
+ if (!hash.empty())
+ return;
+
+ code(fun([&](std::streambuf &data, std::streambuf &save) {
+ HashProxy proxy(hash, save);
+ copy(data, proxy);
+ }));
+
+ _assert(hash.size() == LDID_SHA1_DIGEST_LENGTH);
+ }));
+
+ 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();
+
+ for (const auto &hash : local)
+ for (const auto &rule : version.second)
+ if (rule(hash.first)) {
+ if (rule.mode_ == NoMode)
+ plist_dict_set_item(files, hash.first.c_str(), plist_new_data(hash.second.data(), hash.second.size()));
+ else if (rule.mode_ == OptionalMode) {
+ auto entry(plist_new_dict());
+ plist_dict_set_item(entry, "hash", plist_new_data(hash.second.data(), hash.second.size()));
+ plist_dict_set_item(entry, "optional", plist_new_bool(true));
+ plist_dict_set_item(files, hash.first.c_str(), entry);
+ }
+
+ break;
}
+ }
+
+ for (const auto &version : versions) {
+ auto rules(plist_new_dict());
+ plist_dict_set_item(plist, ("rules" + version.first).c_str(), rules);
+
+ std::multiset<const Rule *, RuleCode> 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;
+ }
+
+ 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_));
}
+ }
- super->count = Swap(count);
- super->blob.length = Swap(offset);
+ folder.Save(signature, 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);
+ }));
+
+ folder.Open(executable, fun([&](std::streambuf &buffer) {
+ // XXX: this is a miserable fail
+ std::stringbuf temp;
+ copy(buffer, temp);
+ auto data(temp.str());
+
+ folder.Save(executable, fun([&](std::streambuf &save) {
+ Slots slots;
+ slots[1] = local.at(info);
+ slots[3] = local.at(signature);
+
+ HashProxy proxy(local[executable], save);
+ Sign(data.data(), data.size(), proxy, identifier, entitlements, key, slots);
+ }));
+ }));
+
+ for (const auto &hash : local)
+ remote[root + hash.first] = hash.second;
+
+ return executable;
+}
+#endif
- if (offset > size) {
- fprintf(stderr, "offset (%u) > size (%u)\n", offset, size);
- _assert(false);
- } //else fprintf(stderr, "offset (%zu) <= size (%zu)\n", offset, size);
+#endif
+}
+
+#ifndef LDID_NOTOOLS
+int main(int argc, char *argv[]) {
+#ifndef LDID_NOSMIME
+ OpenSSL_add_all_algorithms();
+#endif
+
+ union {
+ uint16_t word;
+ uint8_t byte[2];
+ } endian = {1};
+
+ little_ = endian.byte[0];
+
+ bool flag_r(false);
+ bool flag_e(false);
+
+#ifndef LDID_NOFLAGT
+ bool flag_T(false);
+#endif
+
+ bool flag_S(false);
+ bool flag_s(false);
+
+ bool flag_D(false);
+
+ bool flag_A(false);
+ bool flag_a(false);
+
+ bool flag_u(false);
+
+ 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
- memset(blob + offset, 0, size - offset);
+ Map entitlements;
+ Map key;
+ ldid::Slots slots;
+
+ std::vector<std::string> files;
+
+ if (argc == 1) {
+ fprintf(stderr, "usage: %s -S[entitlements.xml] <binary>\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;
+
+ 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;
+
+ case 's':
+ _assert(!flag_r);
+ _assert(!flag_S);
+ flag_s = true;
+ break;
+
+ 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;
+
+ 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
+
+ case 'u': {
+ flag_u = true;
+ } break;
+
+ case 'I': {
+ flag_I = argv[argi] + 2;
+ } break;
+
+ default:
+ goto usage;
+ break;
}
- if (flag_S) {
- uint8_t *top = reinterpret_cast<uint8_t *>(framework.GetBase());
- size_t size = framework.GetSize();
+ _assert(flag_S || key.empty());
+ _assert(flag_S || flag_I == NULL);
+
+ if (files.empty()) usage: {
+ exit(0);
+ }
- 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);
+ 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);
+ std::map<std::string, std::vector<char>> hashes;
+ path += "/" + Bundle("", folder, key, hashes, entitlements);
+#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, key, slots);
+ }
- _syscall(unlink(temp));
- free(temp);
- temp = copy;
+ Commit(path, temp);
}
- if (temp) {
- 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);
+ bool modify(false);
+#ifndef LDID_NOFLAGT
+ if (flag_T)
+ modify = true;
+#endif
+ if (flag_s)
+ modify = true;
+
+ 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;
+ if (mach_header.GetCPUSubtype() != flag_CPUSubtype)
+ continue;
+ }
+
+ if (flag_a)
+ printf("cpu=0x%x:0x%x\n", mach_header.GetCPUType(), mach_header.GetCPUSubtype());
+
+ _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<struct linkedit_data_command *>(load_command);
+ else if (cmd == LC_ENCRYPTION_INFO || cmd == LC_ENCRYPTION_INFO_64)
+ encryption = reinterpret_cast<struct encryption_info_command *>(load_command);
+ else if (cmd == LC_LOAD_DYLIB) {
+ volatile struct dylib_command *dylib_command(reinterpret_cast<struct dylib_command *>(load_command));
+ const char *name(reinterpret_cast<const char *>(load_command) + mach_header.Swap(dylib_command->dylib.name));
+
+ 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<struct dylib_command *>(load_command));
+
+ if (flag_T) {
+ uint32_t timed;
+
+ if (!timeh)
+ timed = timev;
+ else {
+ dylib_command->dylib.timestamp = 0;
+ timed = hash(reinterpret_cast<uint8_t *>(mach_header.GetBase()), mach_header.GetSize(), timev);
+ }
+
+ dylib_command->dylib.timestamp = mach_header.Swap(timed);
+ }
+ }
+#endif
+ }
+
+ if (flag_D) {
+ _assert(encryption != NULL);
+ encryption->cryptid = mach_header.Swap(0);
+ }
+
+ if (flag_e) {
+ _assert(signature != NULL);
+
+ uint32_t data = mach_header.Swap(signature->dataoff);
+
+ uint8_t *top = reinterpret_cast<uint8_t *>(mach_header.GetBase());
+ uint8_t *blob = top + data;
+ struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
+
+ for (size_t index(0); index != Swap(super->count); ++index)
+ if (Swap(super->index[index].type) == CSSLOT_ENTITLEMENTS) {
+ uint32_t begin = Swap(super->index[index].offset);
+ struct Blob *entitlements = reinterpret_cast<struct Blob *>(blob + begin);
+ fwrite(entitlements + 1, 1, Swap(entitlements->length) - sizeof(*entitlements), stdout);
+ }
+ }
+
+ if (flag_s) {
+ _assert(signature != NULL);
+
+ uint32_t data = mach_header.Swap(signature->dataoff);
+
+ uint8_t *top = reinterpret_cast<uint8_t *>(mach_header.GetBase());
+ uint8_t *blob = top + data;
+ struct SuperBlob *super = reinterpret_cast<struct SuperBlob *>(blob);
+
+ 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<struct CodeDirectory *>(blob + begin);
+
+ uint8_t (*hashes)[LDID_SHA1_DIGEST_LENGTH] = reinterpret_cast<uint8_t (*)[LDID_SHA1_DIGEST_LENGTH]>(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 + PageSize_ * i, PageSize_);
+ if (pages != 0)
+ sha1(hashes[pages - 1], top + PageSize_ * (pages - 1), ((data - 1) % PageSize_) + 1);
+ }
+ }
}
- free(dir);
++filei;
} catch (const char *) {
++filee;
return filee;
}
+#endif
projects / ldid.git / blobdiff