Cider Isn't Darwin Emulation, Really
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#ifndef _SYS_CODESIGN_H_#define _SYS_CODESIGN_H_
/* code signing attributes of a process */#define CS_VALID 0x0000001 /* dynamically valid */#define CS_ADHOC 0x0000002 /* ad hoc signed */#define CS_GET_TASK_ALLOW 0x0000004 /* has get-task-allow entitlement */#define CS_INSTALLER 0x0000008 /* has installer entitlement */
#define CS_HARD 0x0000100 /* don't load invalid pages */#define CS_KILL 0x0000200 /* kill process if it becomes invalid */#define CS_CHECK_EXPIRATION 0x0000400 /* force expiration checking */#define CS_RESTRICT 0x0000800 /* tell dyld to treat restricted */#define CS_ENFORCEMENT 0x0001000 /* require enforcement */#define CS_REQUIRE_LV 0x0002000 /* require library validation */#define CS_ENTITLEMENTS_VALIDATED 0x0004000 /* code signature permits restricted entitlements */
#define CS_ALLOWED_MACHO (CS_ADHOC | CS_HARD | CS_KILL | CS_CHECK_EXPIRATION | CS_RESTRICT | CS_ENFORCEMENT | CS_REQUIRE_LV)
#define CS_EXEC_SET_HARD 0x0100000 /* set CS_HARD on any exec'ed process */#define CS_EXEC_SET_KILL 0x0200000 /* set CS_KILL on any exec'ed process */#define CS_EXEC_SET_ENFORCEMENT 0x0400000 /* set CS_ENFORCEMENT on any exec'ed process */#define CS_EXEC_SET_INSTALLER 0x0800000 /* set CS_INSTALLER on any exec'ed process */
#define CS_KILLED 0x1000000 /* was killed by kernel for invalidity */#define CS_DYLD_PLATFORM 0x2000000 /* dyld used to load this is a platform binary */#define CS_PLATFORM_BINARY 0x4000000 /* this is a platform binary */#define CS_PLATFORM_PATH 0x8000000 /* platform binary by the fact of path (osx only) */#define CS_DEBUGGED 0x10000000 /* process is currently or has previously been debugged and allowed to run with invalid pages */#define CS_SIGNED 0x20000000 /* process has a signature (may have gone invalid) */#define CS_DEV_CODE 0x40000000 /* code is dev signed, cannot be loaded into prod signed code (will go away with rdar://problem/28322552) */ #define CS_ENTITLEMENT_FLAGS (CS_GET_TASK_ALLOW | CS_INSTALLER)
/* MAC flags used by F_ADDFILESIGS_* */#define MAC_VNODE_CHECK_DYLD_SIM 0x1 /* tells the MAC framework that dyld-sim is being loaded */
/* csops operations */#define CS_OPS_STATUS 0 /* return status */#define CS_OPS_MARKINVALID 1 /* invalidate process */#define CS_OPS_MARKHARD 2 /* set HARD flag */#define CS_OPS_MARKKILL 3 /* set KILL flag (sticky) */#ifdef KERNEL_PRIVATE/* CS_OPS_PIDPATH 4 */#endif#define CS_OPS_CDHASH 5 /* get code directory hash */#define CS_OPS_PIDOFFSET 6 /* get offset of active Mach-o slice */#define CS_OPS_ENTITLEMENTS_BLOB 7 /* get entitlements blob */#define CS_OPS_MARKRESTRICT 8 /* set RESTRICT flag (sticky) */#define CS_OPS_SET_STATUS 9 /* set codesign flags */#define CS_OPS_BLOB 10 /* get codesign blob */#define CS_OPS_IDENTITY 11 /* get codesign identity */#define CS_OPS_CLEARINSTALLER 12 /* clear INSTALLER flag */
/* * Magic numbers used by Code Signing */enum { CSMAGIC_REQUIREMENT = 0xfade0c00, /* single Requirement blob */ CSMAGIC_REQUIREMENTS = 0xfade0c01, /* Requirements vector (internal requirements) */ CSMAGIC_CODEDIRECTORY = 0xfade0c02, /* CodeDirectory blob */ CSMAGIC_EMBEDDED_SIGNATURE = 0xfade0cc0, /* embedded form of signature data */ CSMAGIC_EMBEDDED_SIGNATURE_OLD = 0xfade0b02, /* XXX */ CSMAGIC_EMBEDDED_ENTITLEMENTS = 0xfade7171, /* embedded entitlements */ CSMAGIC_DETACHED_SIGNATURE = 0xfade0cc1, /* multi-arch collection of embedded signatures */ CSMAGIC_BLOBWRAPPER = 0xfade0b01, /* CMS Signature, among other things */ CS_SUPPORTSSCATTER = 0x20100, CS_SUPPORTSTEAMID = 0x20200,
CSSLOT_CODEDIRECTORY = 0, /* slot index for CodeDirectory */ CSSLOT_INFOSLOT = 1, CSSLOT_REQUIREMENTS = 2, CSSLOT_RESOURCEDIR = 3, CSSLOT_APPLICATION = 4, CSSLOT_ENTITLEMENTS = 5,
CSSLOT_ALTERNATE_CODEDIRECTORIES = 0x1000, /* first alternate CodeDirectory, if any */ CSSLOT_ALTERNATE_CODEDIRECTORY_MAX = 5, /* max number of alternate CD slots */ CSSLOT_ALTERNATE_CODEDIRECTORY_LIMIT = CSSLOT_ALTERNATE_CODEDIRECTORIES + CSSLOT_ALTERNATE_CODEDIRECTORY_MAX, /* one past the last */
CSSLOT_SIGNATURESLOT = 0x10000, /* CMS Signature */
CSTYPE_INDEX_REQUIREMENTS = 0x00000002, /* compat with amfi */ CSTYPE_INDEX_ENTITLEMENTS = 0x00000005, /* compat with amfi */
CS_HASHTYPE_SHA1 = 1, CS_HASHTYPE_SHA256 = 2, CS_HASHTYPE_SHA256_TRUNCATED = 3, CS_HASHTYPE_SHA384 = 4,
CS_SHA1_LEN = 20, CS_SHA256_TRUNCATED_LEN = 20,
CS_CDHASH_LEN = 20, /* always - larger hashes are truncated */ CS_HASH_MAX_SIZE = 48, /* max size of the hash we'll support */};
#define KERNEL_HAVE_CS_CODEDIRECTORY 1#define KERNEL_CS_CODEDIRECTORY_HAVE_PLATFORM 1
/* * C form of a CodeDirectory. */typedef struct __CodeDirectory { uint32_t magic; /* magic number (CSMAGIC_CODEDIRECTORY) */ uint32_t length; /* total length of CodeDirectory blob */ uint32_t version; /* compatibility version */ uint32_t flags; /* setup and mode flags */ uint32_t hashOffset; /* offset of hash slot element at index zero */ uint32_t identOffset; /* offset of identifier string */ uint32_t nSpecialSlots; /* number of special hash slots */ uint32_t nCodeSlots; /* number of ordinary (code) hash slots */ uint32_t codeLimit; /* limit to main image signature range */ uint8_t hashSize; /* size of each hash in bytes */ uint8_t hashType; /* type of hash (cdHashType* constants) */ uint8_t platform; /* platform identifier; zero if not platform binary */ uint8_t pageSize; /* log2(page size in bytes); 0 => infinite */ uint32_t spare2; /* unused (must be zero) */ /* Version 0x20100 */ uint32_t scatterOffset; /* offset of optional scatter vector */ /* Version 0x20200 */ uint32_t teamOffset; /* offset of optional team identifier */ /* followed by dynamic content as located by offset fields above */} CS_CodeDirectory;
/* * Structure of an embedded-signature SuperBlob */
typedef struct __BlobIndex { uint32_t type; /* type of entry */ uint32_t offset; /* offset of entry */} CS_BlobIndex;
typedef struct __SC_SuperBlob { uint32_t magic; /* magic number */ uint32_t length; /* total length of SuperBlob */ uint32_t count; /* number of index entries following */ CS_BlobIndex index[]; /* (count) entries */ /* followed by Blobs in no particular order as indicated by offsets in index */} CS_SuperBlob;
#define KERNEL_HAVE_CS_GENERICBLOB 1typedef struct __SC_GenericBlob { uint32_t magic; /* magic number */ uint32_t length; /* total length of blob */ char data[];} CS_GenericBlob;
typedef struct __SC_Scatter { uint32_t count; // number of pages; zero for sentinel (only) uint32_t base; // first page number uint64_t targetOffset; // offset in target uint64_t spare; // reserved} SC_Scatter;
#ifndef KERNEL
#include <sys/types.h>#include <mach/message.h>
__BEGIN_DECLS/* code sign operations */int csops(pid_t pid, unsigned int ops, void * useraddr, size_t usersize);int csops_audittoken(pid_t pid, unsigned int ops, void * useraddr, size_t usersize, audit_token_t * token);__END_DECLS
#else /* !KERNEL */
#include <mach/vm_types.h>
#include <sys/cdefs.h>#include <sys/_types/_off_t.h>
struct vnode;struct cs_blob;struct fileglob;
__BEGIN_DECLSint cs_valid(struct proc *);int cs_enforcement(struct proc *);int cs_require_lv(struct proc *);int cs_system_require_lv(void);uint32_t cs_entitlement_flags(struct proc *p);int cs_entitlements_blob_get(struct proc *, void **, size_t *);int cs_restricted(struct proc *);uint8_t * cs_get_cdhash(struct proc *);
struct cs_blob * csproc_get_blob(struct proc *);struct cs_blob * csvnode_get_blob(struct vnode *, off_t);void csvnode_print_debug(struct vnode *);
off_t csblob_get_base_offset(struct cs_blob *);vm_size_t csblob_get_size(struct cs_blob *);vm_address_t csblob_get_addr(struct cs_blob *);const char * csblob_get_teamid(struct cs_blob *);const char * csblob_get_identity(struct cs_blob *);const uint8_t * csblob_get_cdhash(struct cs_blob *);int csblob_get_platform_binary(struct cs_blob *);unsigned int csblob_get_flags(struct cs_blob *blob);
int csblob_get_entitlements(struct cs_blob *, void **, size_t *);
const CS_GenericBlob * csblob_find_blob(struct cs_blob *, uint32_t, uint32_t);const CS_GenericBlob * csblob_find_blob_bytes(const uint8_t *, size_t, uint32_t, uint32_t);void * csblob_entitlements_dictionary_copy(struct cs_blob *csblob);void csblob_entitlements_dictionary_set(struct cs_blob *csblob, void * entitlements);
/* * Mostly convenience functions below */
const char * csproc_get_teamid(struct proc *);const char * csvnode_get_teamid(struct vnode *, off_t);int csproc_get_platform_binary(struct proc *);int csproc_get_prod_signed(struct proc *);const char * csfg_get_teamid(struct fileglob *);int csfg_get_path(struct fileglob *, char *, int *);int csfg_get_platform_binary(struct fileglob *);uint8_t * csfg_get_cdhash(struct fileglob *, uint64_t, size_t *);int csfg_get_prod_signed(struct fileglob *);
extern int cs_debug;
#ifdef XNU_KERNEL_PRIVATE
void cs_init(void);int cs_allow_invalid(struct proc *);int cs_invalid_page(addr64_t vaddr, boolean_t *cs_killed);int csproc_get_platform_path(struct proc *);
#if !SECURE_KERNELextern int cs_enforcement_panic;#endif
#endif /* XNU_KERNEL_PRIVATE */
__END_DECLS
#endif /* KERNEL */
#endif /* _SYS_CODESIGN_H_ */