1/* 2 * Copyright (c) 2006 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29#ifndef _SYS_CODESIGN_H_ 30#define _SYS_CODESIGN_H_ 31 32/* code signing attributes of a process */ 33#define CS_VALID 0x0000001 /* dynamically valid */ 34#define CS_ADHOC 0x0000002 /* ad hoc signed */ 35#define CS_GET_TASK_ALLOW 0x0000004 /* has get-task-allow entitlement */ 36#define CS_INSTALLER 0x0000008 /* has installer entitlement */ 37 38#define CS_HARD 0x0000100 /* don't load invalid pages */ 39#define CS_KILL 0x0000200 /* kill process if it becomes invalid */ 40#define CS_CHECK_EXPIRATION 0x0000400 /* force expiration checking */ 41#define CS_RESTRICT 0x0000800 /* tell dyld to treat restricted */ 42#define CS_ENFORCEMENT 0x0001000 /* require enforcement */ 43#define CS_REQUIRE_LV 0x0002000 /* require library validation */ 44 45#define CS_ALLOWED_MACHO 0x00ffffe 46 47#define CS_EXEC_SET_HARD 0x0100000 /* set CS_HARD on any exec'ed process */ 48#define CS_EXEC_SET_KILL 0x0200000 /* set CS_KILL on any exec'ed process */ 49#define CS_EXEC_SET_ENFORCEMENT 0x0400000 /* set CS_ENFORCEMENT on any exec'ed process */ 50#define CS_EXEC_SET_INSTALLER 0x0800000 /* set CS_INSTALLER on any exec'ed process */ 51 52#define CS_KILLED 0x1000000 /* was killed by kernel for invalidity */ 53#define CS_DYLD_PLATFORM 0x2000000 /* dyld used to load this is a platform binary */ 54 55#define CS_ENTITLEMENT_FLAGS (CS_GET_TASK_ALLOW | CS_INSTALLER) 56 57/* csops operations */ 58#define CS_OPS_STATUS 0 /* return status */ 59#define CS_OPS_MARKINVALID 1 /* invalidate process */ 60#define CS_OPS_MARKHARD 2 /* set HARD flag */ 61#define CS_OPS_MARKKILL 3 /* set KILL flag (sticky) */ 62#ifdef KERNEL_PRIVATE 63/* CS_OPS_PIDPATH 4 */ 64#endif 65#define CS_OPS_CDHASH 5 /* get code directory hash */ 66#define CS_OPS_PIDOFFSET 6 /* get offset of active Mach-o slice */ 67#define CS_OPS_ENTITLEMENTS_BLOB 7 /* get entitlements blob */ 68#define CS_OPS_MARKRESTRICT 8 /* set RESTRICT flag (sticky) */ 69#define CS_OPS_SET_STATUS 9 /* set codesign flags */ 70#define CS_OPS_BLOB 10 /* get codesign blob */ 71#define CS_OPS_IDENTITY 11 /* get codesign identity */ 72 73/* SigPUP */ 74#define CS_OPS_SIGPUP_INSTALL 20 75#define CS_OPS_SIGPUP_DROP 21 76#define CS_OPS_SIGPUP_VALIDATE 22 77 78struct sigpup_install_table { 79 uint64_t data; 80 uint64_t length; 81 uint64_t path; 82}; 83 84 85/* 86 * Magic numbers used by Code Signing 87 */ 88enum { 89 CSMAGIC_REQUIREMENT = 0xfade0c00, /* single Requirement blob */ 90 CSMAGIC_REQUIREMENTS = 0xfade0c01, /* Requirements vector (internal requirements) */ 91 CSMAGIC_CODEDIRECTORY = 0xfade0c02, /* CodeDirectory blob */ 92 CSMAGIC_EMBEDDED_SIGNATURE = 0xfade0cc0, /* embedded form of signature data */ 93 CSMAGIC_EMBEDDED_SIGNATURE_OLD = 0xfade0b02, /* XXX */ 94 CSMAGIC_EMBEDDED_ENTITLEMENTS = 0xfade7171, /* embedded entitlements */ 95 CSMAGIC_DETACHED_SIGNATURE = 0xfade0cc1, /* multi-arch collection of embedded signatures */ 96 CSMAGIC_BLOBWRAPPER = 0xfade0b01, /* CMS Signature, among other things */ 97 98 CS_SUPPORTSSCATTER = 0x20100, 99 CS_SUPPORTSTEAMID = 0x20200, 100 101 CSSLOT_CODEDIRECTORY = 0, /* slot index for CodeDirectory */ 102 CSSLOT_INFOSLOT = 1, 103 CSSLOT_REQUIREMENTS = 2, 104 CSSLOT_RESOURCEDIR = 3, 105 CSSLOT_APPLICATION = 4, 106 CSSLOT_ENTITLEMENTS = 5, 107 108 CSSLOT_SIGNATURESLOT = 0x10000, /* CMS Signature */ 109 110 CSTYPE_INDEX_REQUIREMENTS = 0x00000002, /* compat with amfi */ 111 CSTYPE_INDEX_ENTITLEMENTS = 0x00000005, /* compat with amfi */ 112 113 CS_HASHTYPE_SHA1 = 1 114}; 115 116 117#define KERNEL_HAVE_CS_CODEDIRECTORY 1 118 119/* 120 * C form of a CodeDirectory. 121 */ 122typedef struct __CodeDirectory { 123 uint32_t magic; /* magic number (CSMAGIC_CODEDIRECTORY) */ 124 uint32_t length; /* total length of CodeDirectory blob */ 125 uint32_t version; /* compatibility version */ 126 uint32_t flags; /* setup and mode flags */ 127 uint32_t hashOffset; /* offset of hash slot element at index zero */ 128 uint32_t identOffset; /* offset of identifier string */ 129 uint32_t nSpecialSlots; /* number of special hash slots */ 130 uint32_t nCodeSlots; /* number of ordinary (code) hash slots */ 131 uint32_t codeLimit; /* limit to main image signature range */ 132 uint8_t hashSize; /* size of each hash in bytes */ 133 uint8_t hashType; /* type of hash (cdHashType* constants) */ 134 uint8_t spare1; /* unused (must be zero) */ 135 uint8_t pageSize; /* log2(page size in bytes); 0 => infinite */ 136 uint32_t spare2; /* unused (must be zero) */ 137 /* Version 0x20100 */ 138 uint32_t scatterOffset; /* offset of optional scatter vector */ 139 /* Version 0x20200 */ 140 uint32_t teamOffset; /* offset of optional team identifier */ 141 /* followed by dynamic content as located by offset fields above */ 142} CS_CodeDirectory; 143 144/* 145 * Structure of an embedded-signature SuperBlob 146 */ 147 148typedef struct __BlobIndex { 149 uint32_t type; /* type of entry */ 150 uint32_t offset; /* offset of entry */ 151} CS_BlobIndex; 152 153typedef struct __SC_SuperBlob { 154 uint32_t magic; /* magic number */ 155 uint32_t length; /* total length of SuperBlob */ 156 uint32_t count; /* number of index entries following */ 157 CS_BlobIndex index[]; /* (count) entries */ 158 /* followed by Blobs in no particular order as indicated by offsets in index */ 159} CS_SuperBlob; 160 161typedef struct __SC_GenericBlob { 162 uint32_t magic; /* magic number */ 163 uint32_t length; /* total length of blob */ 164 char data[]; 165} CS_GenericBlob; 166 167typedef struct __SC_Scatter { 168 uint32_t count; // number of pages; zero for sentinel (only) 169 uint32_t base; // first page number 170 uint64_t targetOffset; // offset in target 171 uint64_t spare; // reserved 172} SC_Scatter; 173 174 175#ifndef KERNEL 176 177#include <sys/types.h> 178#include <mach/message.h> 179 180__BEGIN_DECLS 181/* code sign operations */ 182int csops(pid_t pid, unsigned int ops, void * useraddr, size_t usersize); 183int csops_audittoken(pid_t pid, unsigned int ops, void * useraddr, size_t usersize, audit_token_t * token); 184__END_DECLS 185 186#else /* !KERNEL */ 187 188#include <sys/cdefs.h> 189#include <sys/_types/_off_t.h> 190 191struct vnode; 192struct cs_blob; 193struct fileglob; 194 195struct cscsr_functions { 196 int csr_version; 197#define CSCSR_VERSION 1 198 int (*csr_validate_header)(const uint8_t *, size_t); 199 const void* (*csr_find_file_codedirectory)(struct vnode *, const uint8_t *, size_t, size_t *); 200}; 201 202__BEGIN_DECLS 203int cs_enforcement(struct proc *); 204int cs_require_lv(struct proc *); 205uint32_t cs_entitlement_flags(struct proc *p); 206int cs_entitlements_blob_get(struct proc *, void **, size_t *); 207uint8_t * cs_get_cdhash(struct proc *); 208void cs_register_cscsr(struct cscsr_functions *); 209 210const CS_GenericBlob * 211 cs_find_blob(struct cs_blob *, uint32_t, uint32_t); 212 213const char * csblob_get_teamid(struct cs_blob *); 214const char * csproc_get_teamid(struct proc *); 215const char * csvnode_get_teamid(struct vnode *, off_t); 216int csproc_get_platform_binary(struct proc *); 217const char * csfg_get_teamid(struct fileglob *); 218int csfg_get_path(struct fileglob *, char *, int *); 219int csfg_get_platform_binary(struct fileglob *); 220 221__END_DECLS 222 223#ifdef XNU_KERNEL_PRIVATE 224 225void cs_init(void); 226int cs_allow_invalid(struct proc *); 227int cs_invalid_page(addr64_t); 228int sigpup_install(user_addr_t); 229int sigpup_drop(void); 230 231extern int cs_debug; 232extern int cs_validation; 233#if !SECURE_KERNEL 234extern int cs_enforcement_panic; 235#endif 236 237#endif /* XNU_KERNEL_PRIVATE */ 238 239#endif /* KERNEL */ 240 241#endif /* _SYS_CODESIGN_H_ */ 242