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108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
#ifndef CS_BLOB_H
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#define CS_BLOB_H
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "FAT.h"
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#include "MachO.h"
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#include "MemoryStream.h"
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// Blob index
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typedef struct __BlobIndex {
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uint32_t type;
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uint32_t offset;
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} CS_BlobIndex;
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// CMS superblob
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typedef struct __SuperBlob {
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uint32_t magic;
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uint32_t length;
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uint32_t count;
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CS_BlobIndex index[];
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} CS_SuperBlob;
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typedef struct __GenericBlob {
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uint32_t magic; /* magic number */
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uint32_t length; /* total length of blob */
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char data[];
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} CS_GenericBlob;
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// CMS blob magic types
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enum {
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CSBLOB_REQUIREMENT = 0xfade0c00,
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CSBLOB_REQUIREMENTS = 0xfade0c01,
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CSBLOB_CODEDIRECTORY = 0xfade0c02,
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CSBLOB_EMBEDDED_SIGNATURE = 0xfade0cc0,
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CSBLOB_DETACHED_SIGNATURE = 0xfade0cc1,
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CSBLOB_ENTITLEMENTS = 0xfade7171,
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CSBLOB_DER_ENTITLEMENTS = 0xfade7172,
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CSBLOB_SIGNATURE_BLOB = 0xfade0b01
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} CS_BlobType;
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enum {
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CSSLOT_CODEDIRECTORY = 0,
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CSSLOT_INFOSLOT = 1,
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CSSLOT_REQUIREMENTS = 2,
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CSSLOT_RESOURCEDIR = 3,
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CSSLOT_APPLICATION = 4,
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CSSLOT_ENTITLEMENTS = 5,
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CSSLOT_DER_ENTITLEMENTS = 7,
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CSSLOT_ALTERNATE_CODEDIRECTORIES = 0x1000,
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CSSLOT_ALTERNATE_CODEDIRECTORY_MAX = 5,
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CSSLOT_ALTERNATE_CODEDIRECTORY_LIMIT = CSSLOT_ALTERNATE_CODEDIRECTORIES + CSSLOT_ALTERNATE_CODEDIRECTORY_MAX,
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CSSLOT_SIGNATURESLOT = 0x10000
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} CS_SlotType;
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typedef struct s_CS_DecodedBlob {
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struct s_CS_DecodedBlob *next;
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uint32_t type;
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MemoryStream *stream;
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} CS_DecodedBlob;
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typedef struct s_CS_DecodedSuperBlob {
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uint32_t magic;
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struct s_CS_DecodedBlob *firstBlob;
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} CS_DecodedSuperBlob;
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// Convert blob magic to readable blob type string
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char *cs_blob_magic_to_string(int magic);
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// Extract Code Signature to file
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int macho_extract_cs_to_file(MachO *macho, CS_SuperBlob *superblob);
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int macho_find_code_signature_bounds(MachO *macho, uint32_t *offsetOut, uint32_t *sizeOut);
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CS_SuperBlob *macho_read_code_signature(MachO *macho);
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int macho_replace_code_signature(MachO *macho, CS_SuperBlob *superblob);
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int update_load_commands(MachO *macho, CS_SuperBlob *superblob, uint64_t originalSize);
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CS_DecodedBlob *csd_blob_init(uint32_t type, CS_GenericBlob *blobData);
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int csd_blob_read(CS_DecodedBlob *blob, uint64_t offset, size_t size, void *outBuf);
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int csd_blob_write(CS_DecodedBlob *blob, uint64_t offset, size_t size, const void *inBuf);
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int csd_blob_insert(CS_DecodedBlob *blob, uint64_t offset, size_t size, const void *inBuf);
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int csd_blob_delete(CS_DecodedBlob *blob, uint64_t offset, size_t size);
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int csd_blob_read_string(CS_DecodedBlob *blob, uint64_t offset, char **outString);
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int csd_blob_write_string(CS_DecodedBlob *blob, uint64_t offset, const char *string);
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int csd_blob_get_size(CS_DecodedBlob *blob);
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uint32_t csd_blob_get_type(CS_DecodedBlob *blob);
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void csd_blob_set_type(CS_DecodedBlob *blob, uint32_t type);
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void csd_blob_free(CS_DecodedBlob *blob);
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CS_DecodedSuperBlob *csd_superblob_decode(CS_SuperBlob *superblob);
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CS_SuperBlob *csd_superblob_encode(CS_DecodedSuperBlob *decodedSuperblob);
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CS_DecodedBlob *csd_superblob_find_blob(CS_DecodedSuperBlob *superblob, uint32_t type, uint32_t *indexOut);
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int csd_superblob_insert_blob_after_blob(CS_DecodedSuperBlob *superblob, CS_DecodedBlob *blobToInsert, CS_DecodedBlob *afterBlob);
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int csd_superblob_insert_blob_at_index(CS_DecodedSuperBlob *superblob, CS_DecodedBlob *blobToInsert, uint32_t atIndex);
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int csd_superblob_append_blob(CS_DecodedSuperBlob *superblob, CS_DecodedBlob *blobToAppend);
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int csd_superblob_remove_blob(CS_DecodedSuperBlob *superblob, CS_DecodedBlob *blobToRemove); // <- Important: When calling this, caller is responsible for freeing blobToRemove
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int csd_superblob_remove_blob_at_index(CS_DecodedSuperBlob *superblob, uint32_t atIndex);
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int csd_superblob_print_content(CS_DecodedSuperBlob *decodedSuperblob, MachO *macho, bool printAllSlots, bool verifySlots);
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void csd_superblob_free(CS_DecodedSuperBlob *decodedSuperblob);
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#endif // CS_BLOB_H
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