X-Git-Url: https://git.saurik.com/ldid.git/blobdiff_plain/ea6a0421ff3e7d09ca273664b987a83af8e7a8fd..a5b37447b03462ef06a63c644932c16ba864da0f:/ldid.cpp
diff --git a/ldid.cpp b/ldid.cpp
index b581988..38cc489 100644
--- a/ldid.cpp
+++ b/ldid.cpp
@@ -1,39 +1,22 @@
-/* JocStrap - Java/Objective-C Bootstrap
- * Copyright (C) 2007 Jay Freeman (saurik)
+/* ldid - (Mach-O) Link-Loader Identity Editor
+ * Copyright (C) 2007-2012 Jay Freeman (saurik)
*/
-/*
- * Redistribution and use in source and binary
- * forms, with or without modification, are permitted
- * provided that the following conditions are met:
+/* 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
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
*
- * 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 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.
*
- * 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.
-*/
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+**/
+/* }}} */
#include "minimal/stdlib.h"
#include "minimal/string.h"
@@ -78,6 +61,11 @@ struct mach_header {
#define MH_MAGIC 0xfeedface
#define MH_CIGAM 0xcefaedfe
+#define MH_MAGIC_64 0xfeedfacf
+#define MH_CIGAM_64 0xcffaedfe
+
+#define MH_DYLDLINK 0x4
+
#define MH_EXECUTE 0x2
#define MH_DYLIB 0x6
#define MH_BUNDLE 0x8
@@ -88,13 +76,21 @@ struct load_command {
uint32_t cmdsize;
} _packed;
-#define LC_REQ_DYLD 0x80000000
-
-#define LC_LOAD_DYLIB 0x0c
-#define LC_ID_DYLIB 0x0d
-#define LC_UUID 0x1b
-#define LC_CODE_SIGNATURE 0x1d
-#define LC_REEXPORT_DYLIB (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)
struct dylib {
uint32_t name;
@@ -115,6 +111,156 @@ struct uuid_command {
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;
+ char segname[16];
+ uint32_t vmaddr;
+ uint32_t vmsize;
+ uint32_t fileoff;
+ uint32_t filesize;
+ uint32_t maxprot;
+ 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];
+ char segname[16];
+ uint32_t addr;
+ uint32_t size;
+ uint32_t offset;
+ uint32_t align;
+ uint32_t reloff;
+ uint32_t nreloc;
+ 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;
+} _packed;
+
struct linkedit_data_command {
uint32_t cmd;
uint32_t cmdsize;
@@ -122,6 +268,14 @@ struct linkedit_data_command {
uint32_t datasize;
} _packed;
+struct encryption_info_command {
+ uint32_t cmd;
+ uint32_t cmdsize;
+ uint32_t cryptoff;
+ uint32_t cryptsize;
+ uint32_t cryptid;
+} _packed;
+
uint16_t Swap_(uint16_t value) {
return
((value >> 8) & 0x00ff) |
@@ -144,12 +298,14 @@ int32_t Swap_(int32_t value) {
return Swap_(static_cast(value));
}
+bool little_(true);
+
uint16_t Swap(uint16_t value) {
- return true ? Swap_(value) : value;
+ return little_ ? Swap_(value) : value;
}
uint32_t Swap(uint32_t value) {
- return true ? Swap_(value) : value;
+ return little_ ? Swap_(value) : value;
}
int16_t Swap(int16_t value) {
@@ -160,14 +316,25 @@ int32_t Swap(int32_t value) {
return Swap(static_cast(value));
}
-class Framework {
+template
+class Pointer;
+
+class Data {
private:
void *base_;
size_t size_;
- mach_header *mach_header_;
+
+ protected:
bool swapped_;
public:
+ Data(void *base, size_t size) :
+ base_(base),
+ size_(size),
+ swapped_(false)
+ {
+ }
+
uint16_t Swap(uint16_t value) const {
return swapped_ ? Swap_(value) : value;
}
@@ -184,35 +351,51 @@ class Framework {
return Swap(static_cast(value));
}
- Framework(const char *framework_path) :
- swapped_(false)
+ void *GetBase() const {
+ return base_;
+ }
+
+ size_t GetSize() const {
+ return size_;
+ }
+};
+
+class MachHeader :
+ public Data
+{
+ private:
+ bool bits64_;
+
+ struct mach_header *mach_header_;
+ struct load_command *load_command_;
+
+ public:
+ MachHeader(void *base, size_t size) :
+ Data(base, size)
{
- base_ = map(framework_path, 0, _not(size_t), &size_, false);
- fat_header *fat_header = reinterpret_cast(base_);
+ mach_header_ = (mach_header *) base;
- 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(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;
- }
+ switch (Swap(mach_header_->magic)) {
+ case MH_CIGAM:
+ swapped_ = !swapped_;
+ case MH_MAGIC:
+ bits64_ = false;
+ break;
+
+ case MH_CIGAM_64:
+ swapped_ = !swapped_;
+ case MH_MAGIC_64:
+ bits64_ = true;
+ break;
- _assert(false);
+ default:
+ _assert(false);
}
- found:
- if (Swap(mach_header_->magic) == MH_CIGAM)
- swapped_ = !swapped_;
- else _assert(Swap(mach_header_->magic) == MH_MAGIC);
+ void *post = mach_header_ + 1;
+ if (bits64_)
+ post = (uint32_t *) post + 1;
+ load_command_ = (struct load_command *) post;
_assert(
Swap(mach_header_->filetype) == MH_EXECUTE ||
@@ -225,18 +408,18 @@ class Framework {
return mach_header_;
}
- void *GetBase() {
- return base_;
+ uint32_t GetCPUType() const {
+ return Swap(mach_header_->cputype);
}
- size_t GetSize() {
- return size_;
+ uint16_t GetCPUSubtype() const {
+ return Swap(mach_header_->cpusubtype) & 0xff;
}
- std::vector GetLoadCommands() {
+ std::vector GetLoadCommands() const {
std::vector load_commands;
- struct load_command *load_command = reinterpret_cast(mach_header_ + 1);
+ struct load_command *load_command = load_command_;
for (uint32_t cmd = 0; cmd != Swap(mach_header_->ncmds); ++cmd) {
load_commands.push_back(load_command);
load_command = (struct load_command *) ((uint8_t *) load_command + Swap(load_command->cmdsize));
@@ -244,15 +427,197 @@ class Framework {
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_));
+ }
+ }
+ }
+
+ 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_));
+ }
};
-#define CSMAGIC_CODEDIRECTORY 0xfade0c02
-#define CSMAGIC_EMBEDDED_SIGNATURE 0xfade0cc0
-#define CSMAGIC_ENTITLEMENTS 0xfade7171
+class FatMachHeader :
+ public MachHeader
+{
+ private:
+ fat_arch *fat_arch_;
-#define CSSLOT_CODEDIRECTORY 0
-#define CSSLOT_REQUIREMENTS 2
-#define CSSLOT_ENTITLEMENTS 5
+ public:
+ FatMachHeader(void *base, size_t size, fat_arch *fat_arch) :
+ MachHeader(base, size),
+ fat_arch_(fat_arch)
+ {
+ }
+
+ fat_arch *GetFatArch() const {
+ return fat_arch_;
+ }
+};
+
+class FatHeader :
+ public Data
+{
+ private:
+ fat_header *fat_header_;
+ std::vector mach_headers_;
+
+ public:
+ FatHeader(void *base, size_t size) :
+ Data(base, size)
+ {
+ fat_header_ = reinterpret_cast(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(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;
+ }
+ }
+ }
+
+ std::vector &GetMachHeaders() {
+ return mach_headers_;
+ }
+
+ bool IsFat() const {
+ return fat_header_ != NULL;
+ }
+
+ 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_;
+ }
+
+ Pointer &operator ++() {
+ ++pointer_;
+ return *this;
+ }
+
+ template
+ Value_ Swap(Value_ value) {
+ return framework_->Swap(value);
+ }
+};
+
+#define CSMAGIC_CODEDIRECTORY uint32_t(0xfade0c02)
+#define CSMAGIC_EMBEDDED_SIGNATURE uint32_t(0xfade0cc0)
+#define CSMAGIC_ENTITLEMENTS uint32_t(0xfade7171)
+
+#define CSSLOT_CODEDIRECTORY uint32_t(0)
+#define CSSLOT_REQUIREMENTS uint32_t(2)
+#define CSSLOT_ENTITLEMENTS uint32_t(5)
struct BlobIndex {
uint32_t type;
@@ -288,8 +653,6 @@ struct CodeDirectory {
extern "C" uint32_t hash(uint8_t *k, uint32_t length, uint32_t initval);
-#define CODESIGN_ALLOCATE "arm-apple-darwin9-codesign_allocate"
-
void sha1(uint8_t *hash, uint8_t *data, size_t size) {
SHA1Context context;
SHA1Reset(&context);
@@ -297,27 +660,65 @@ void sha1(uint8_t *hash, uint8_t *data, size_t size) {
SHA1Result(&context, hash);
}
+struct CodesignAllocation {
+ uint32_t type_;
+ uint16_t subtype_;
+ size_t size_;
+
+ CodesignAllocation(uint32_t type, uint16_t subtype, size_t size) :
+ type_(type),
+ subtype_(subtype),
+ size_(size)
+ {
+ }
+};
+
int main(int argc, const char *argv[]) {
+ union {
+ uint16_t word;
+ uint8_t byte[2];
+ } endian = {1};
+
+ little_ = endian.byte[0];
+
bool flag_R(false);
+ bool flag_r(false);
+
bool flag_t(false);
bool flag_p(false);
bool flag_u(false);
+ bool flag_e(false);
bool flag_T(false);
bool flag_S(false);
bool flag_s(false);
+ bool flag_O(false);
+
+ bool flag_D(false);
+ bool flag_d(false);
+
+ bool flag_A(false);
+ bool flag_a(false);
+
+ uint32_t flag_CPUType(_not(uint32_t));
+ uint32_t flag_CPUSubtype(_not(uint32_t));
+
bool timeh(false);
uint32_t timev(0);
const void *xmld(NULL);
size_t xmls(0);
+ uintptr_t noffset(_not(uintptr_t));
+ uintptr_t woffset(_not(uintptr_t));
+
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);
@@ -328,9 +729,32 @@ int main(int argc, const char *argv[]) {
files.push_back(argv[argi]);
else switch (argv[argi][1]) {
case 'R': flag_R = true; break;
+ 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;
+ case 'O': flag_O = true; break;
+
+ case 'D': flag_D = true; break;
+ case 'd': flag_d = true; break;
+
+ case 'a': flag_a = true; break;
+
+ 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;
case 's':
_assert(!flag_S);
@@ -357,6 +781,18 @@ int main(int argc, const char *argv[]) {
}
} break;
+ case 'n': {
+ char *arge;
+ noffset = strtoul(argv[argi] + 2, &arge, 0);
+ _assert(arge == argv[argi] + strlen(argv[argi]));
+ } break;
+
+ case 'w': {
+ char *arge;
+ woffset = strtoul(argv[argi] + 2, &arge, 0);
+ _assert(arge == argv[argi] + strlen(argv[argi]));
+ } break;
+
default:
goto usage;
break;
@@ -368,10 +804,9 @@ int main(int argc, const char *argv[]) {
size_t filei(0), filee(0);
_foreach (file, files) try {
- const char *path(file->c_str());
+ const char *path(file.c_str());
const char *base = strrchr(path, '/');
char *temp(NULL), *dir;
- mode_t mode = 0;
if (base != NULL)
dir = strndup_(path, base++ - path + 1);
@@ -380,48 +815,155 @@ int main(int argc, const char *argv[]) {
base = path;
}
+ 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;
+ }
+ }
+ }
+
+ _assert(size != _not(uint32_t));
+
+ _foreach (segment, const_cast(mach_header).GetSegments("__LINKEDIT")) {
+ segment->filesize -= mach_header.GetSize() - size;
+
+ 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);
+ }
+
+ _foreach (segment, const_cast(mach_header).GetSegments64("__LINKEDIT")) {
+ segment->filesize -= mach_header.GetSize() - size;
+
+ 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);
+ }
+ }
+ }
+
+ _assert(clip != 0);
+ _syscall(truncate(path, clip));
+ }
+
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);
- _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(*load_command);
- size = framework.Swap(signature->dataoff);
- _assert(size < framework.GetSize());
- break;
+ 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 (size == _not(size_t))
+ size = mach_header.GetSize();
}
- }
-
- if (size == _not(size_t))
- size = framework.GetSize();
-
- switch (framework->cputype) {
- case 12: switch (framework->cpusubtype) {
- case 0: arch = "arm"; break;
- case 6: arch = "armv6"; break;
- default: arch = NULL; break;
- } break;
- default: arch = NULL; break;
+ allocations.push_back(CodesignAllocation(mach_header.GetCPUType(), mach_header.GetCPUSubtype(), size));
}
}
- _assert(arch != NULL);
-
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);
+ // XXX: this leaks memory, but it doesn't really matter
+ std::vector args;
+ char *arg;
+
+ args.push_back(allocate);
+
+ args.push_back("-i");
+ args.push_back(path);
+
+ _foreach (allocation, allocations) {
+ args.push_back("-A");
+
+ asprintf(&arg, "%u", allocation.type_);
+ args.push_back(arg);
+
+ asprintf(&arg, "%u", allocation.subtype_);
+ args.push_back(arg);
+
+ size_t alloc(0);
+ alloc += sizeof(struct SuperBlob);
+ uint32_t special(0);
+
+ special = std::max(special, CSSLOT_CODEDIRECTORY);
+ alloc += sizeof(struct BlobIndex);
+ alloc += sizeof(struct CodeDirectory);
+ alloc += strlen(base) + 1;
+
+ special = std::max(special, CSSLOT_REQUIREMENTS);
+ alloc += sizeof(struct BlobIndex);
+ alloc += 0xc;
+
+ if (xmld != NULL) {
+ special = std::max(special, CSSLOT_ENTITLEMENTS);
+ alloc += sizeof(struct BlobIndex);
+ alloc += sizeof(struct Blob);
+ alloc += xmls;
+ }
+
+ size_t normal((allocation.size_ + 0x1000 - 1) / 0x1000);
+ alloc += (special + normal) * 0x14;
+
+ alloc += 15;
+ alloc /= 16;
+ alloc *= 16;
+
+ asprintf(&arg, "%zu", alloc);
+ args.push_back(arg);
+ }
+
+ args.push_back("-o");
+ args.push_back(temp);
+
+ args.push_back(NULL);
+
+ if (false) {
+ printf("run:");
+ _foreach (arg, args)
+ printf(" %s", arg);
+ printf("\n");
+ }
+
+ execvp(allocate, (char **) &args[0]);
_assert(false);
}
@@ -431,176 +973,259 @@ int main(int argc, const char *argv[]) {
_assert(WEXITSTATUS(status) == 0);
}
- Framework framework(temp == NULL ? path : temp);
+ if (flag_p)
+ printf("path%zu='%s'\n", filei, file.c_str());
+
+ 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);
- if (flag_p)
- printf("path%zu='%s'\n", filei, file->c_str());
-
- _foreach (load_command, framework.GetLoadCommands()) {
- uint32_t cmd(framework.Swap((*load_command)->cmd));
-
- if (flag_R && cmd == LC_REEXPORT_DYLIB)
- (*load_command)->cmd = framework.Swap(LC_LOAD_DYLIB);
- 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]
- );
+ _foreach (mach_header, fat_header.GetMachHeaders()) {
+ 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());
+
+ 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));
}
- } else if (cmd == LC_ID_DYLIB) {
- volatile struct dylib_command *dylib_command(reinterpret_cast(*load_command));
- if (flag_t)
- printf("time%zu=0x%.8x\n", filei, framework.Swap(dylib_command->dylib.timestamp));
+ 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);
+ 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) {
+ volatile struct dylib_command *dylib_command(reinterpret_cast(load_command));
- if (flag_T) {
- uint32_t timed;
+ if (flag_t)
+ printf("time%zu=0x%.8x\n", filei, mach_header.Swap(dylib_command->dylib.timestamp));
- if (!timeh)
- timed = timev;
- else {
- dylib_command->dylib.timestamp = 0;
- timed = hash(reinterpret_cast(framework.GetBase()), framework.GetSize(), timev);
+ if (flag_T) {
+ uint32_t timed;
+
+ if (!timeh)
+ timed = timev;
+ else {
+ dylib_command->dylib.timestamp = 0;
+ timed = hash(reinterpret_cast(mach_header.GetBase()), mach_header.GetSize(), timev);
+ }
+
+ 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));
- dylib_command->dylib.timestamp = framework.Swap(timed);
+ 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));
+ }
}
}
- }
- if (flag_s) {
- _assert(signature != NULL);
+ if (flag_e) {
+ _assert(signature != NULL);
- uint32_t data = framework.Swap(signature->dataoff);
- uint32_t size = framework.Swap(signature->datasize);
+ uint32_t data = mach_header.Swap(signature->dataoff);
- uint8_t *top = reinterpret_cast(framework.GetBase());
- uint8_t *blob = top + data;
- struct SuperBlob *super = reinterpret_cast(blob);
+ uint8_t *top = reinterpret_cast(mach_header.GetBase());
+ uint8_t *blob = top + data;
+ struct SuperBlob *super = reinterpret_cast(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(blob + begin);
+ 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(blob + begin);
+ fwrite(entitlements + 1, 1, Swap(entitlements->length) - sizeof(struct Blob), stdout);
+ }
+ }
- uint8_t (*hashes)[20] = reinterpret_cast(blob + begin + Swap(directory->hashOffset));
- uint32_t pages = Swap(directory->nCodeSlots);
+ if (flag_s) {
+ _assert(signature != NULL);
- 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);
- }
- }
+ uint32_t data = mach_header.Swap(signature->dataoff);
- if (flag_S) {
- _assert(signature != NULL);
+ uint8_t *top = reinterpret_cast(mach_header.GetBase());
+ uint8_t *blob = top + data;
+ struct SuperBlob *super = reinterpret_cast(blob);
- uint32_t data = framework.Swap(signature->dataoff);
- uint32_t size = framework.Swap(signature->datasize);
+ 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);
- uint8_t *top = reinterpret_cast(framework.GetBase());
- uint8_t *blob = top + data;
- struct SuperBlob *super = reinterpret_cast(blob);
- super->blob.magic = Swap(CSMAGIC_EMBEDDED_SIGNATURE);
+ uint8_t (*hashes)[20] = reinterpret_cast(blob + begin + Swap(directory->hashOffset));
+ uint32_t pages = Swap(directory->nCodeSlots);
- uint32_t count = xmld == NULL ? 2 : 3;
- uint32_t offset = sizeof(struct SuperBlob) + count * sizeof(struct BlobIndex);
+ 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);
+ }
+ }
- super->index[0].type = Swap(CSSLOT_CODEDIRECTORY);
- super->index[0].offset = Swap(offset);
+ if (flag_S) {
+ _assert(signature != NULL);
- uint32_t begin = offset;
- struct CodeDirectory *directory = reinterpret_cast(blob + begin);
- offset += sizeof(struct CodeDirectory);
+ uint32_t data = mach_header.Swap(signature->dataoff);
+ uint32_t size = mach_header.Swap(signature->datasize);
- directory->blob.magic = Swap(CSMAGIC_CODEDIRECTORY);
- directory->version = Swap(0x00020001);
- directory->flags = Swap(0);
- directory->codeLimit = Swap(data);
- directory->hashSize = 0x14;
- directory->hashType = 0x01;
- directory->spare1 = 0x00;
- directory->pageSize = 0x0c;
- directory->spare2 = Swap(0);
+ 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);
- directory->identOffset = Swap(offset - begin);
- strcpy(reinterpret_cast(blob + offset), base);
- offset += strlen(base) + 1;
+ uint32_t count = xmld == NULL ? 2 : 3;
+ uint32_t offset = sizeof(struct SuperBlob) + count * sizeof(struct BlobIndex);
- uint32_t special = xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS;
- directory->nSpecialSlots = Swap(special);
+ super->index[0].type = Swap(CSSLOT_CODEDIRECTORY);
+ super->index[0].offset = Swap(offset);
- uint8_t (*hashes)[20] = reinterpret_cast(blob + offset);
- memset(hashes, 0, sizeof(*hashes) * special);
+ uint32_t begin = offset;
+ struct CodeDirectory *directory = reinterpret_cast(blob + begin);
+ offset += sizeof(struct CodeDirectory);
- offset += sizeof(*hashes) * special;
- hashes += special;
+ 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));
- uint32_t pages = (data + 0x1000 - 1) / 0x1000;
- directory->nCodeSlots = Swap(pages);
+ directory->identOffset = Swap(offset - begin);
+ strcpy(reinterpret_cast(blob + offset), base);
+ offset += strlen(base) + 1;
- 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);
+ uint32_t special = xmld == NULL ? CSSLOT_REQUIREMENTS : CSSLOT_ENTITLEMENTS;
+ directory->nSpecialSlots = Swap(special);
- directory->hashOffset = Swap(offset - begin);
- offset += sizeof(*hashes) * pages;
- directory->blob.length = Swap(offset - begin);
+ uint8_t (*hashes)[20] = reinterpret_cast(blob + offset);
+ memset(hashes, 0, sizeof(*hashes) * special);
- super->index[1].type = Swap(CSSLOT_REQUIREMENTS);
- super->index[1].offset = Swap(offset);
+ offset += sizeof(*hashes) * special;
+ hashes += special;
- memcpy(blob + offset, "\xfa\xde\x0c\x01\x00\x00\x00\x0c\x00\x00\x00\x00", 0xc);
- offset += 0xc;
+ uint32_t pages = (data + 0x1000 - 1) / 0x1000;
+ directory->nCodeSlots = Swap(pages);
- if (xmld != NULL) {
- super->index[2].type = Swap(CSSLOT_ENTITLEMENTS);
- super->index[2].offset = Swap(offset);
+ 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);
- uint32_t begin = offset;
- struct Blob *entitlements = reinterpret_cast(blob + begin);
- offset += sizeof(struct Blob);
+ directory->hashOffset = Swap(offset - begin);
+ offset += sizeof(*hashes) * pages;
+ directory->blob.length = Swap(offset - begin);
- memcpy(blob + offset, xmld, xmls);
- offset += xmls;
+ super->index[1].type = Swap(CSSLOT_REQUIREMENTS);
+ super->index[1].offset = Swap(offset);
- entitlements->magic = Swap(CSMAGIC_ENTITLEMENTS);
- entitlements->length = Swap(offset - begin);
- }
+ 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;
+
+ entitlements->magic = Swap(CSMAGIC_ENTITLEMENTS);
+ entitlements->length = Swap(offset - begin);
+ }
- 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));
+ 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));
+ }
}
+
+ 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);
}
+ }
- super->count = Swap(count);
- super->blob.length = Swap(offset);
+ if (flag_S) {
+ uint8_t *top = reinterpret_cast(fat_header.GetBase());
+ size_t size = fat_header.GetSize();
- if (offset > size) {
- fprintf(stderr, "offset (%zu) > size (%zu)\n", offset, size);
- _assert(false);
- } //else fprintf(stderr, "offset (%zu) <= size (%zu)\n", offset, size);
+ 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);
- memset(blob + offset, 0, size - offset);
+ _syscall(unlink(temp));
+ free(temp);
+ temp = copy;
}
- if (temp) {
+ if (temp != NULL) {
struct stat info;
_syscall(stat(path, &info));
_syscall(chown(temp, info.st_uid, info.st_gid));