[apple/xnu.git] / bsd / sys / codesign.h

/*
 * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#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_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_ALLOWED_MACHO	0x00ffffe

#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_KILLED		0x1000000	/* was killed by kernel for invalidity */

/* 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 */

/* SigPUP */
#define CS_OPS_SIGPUP_INSTALL	20
#define CS_OPS_SIGPUP_DROP	21
#define CS_OPS_SIGPUP_VALIDATE	22

struct sigpup_install_table {
	uint64_t data;
	uint64_t length;
	uint64_t path;
};


/*
 * 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,

	CSSLOT_CODEDIRECTORY = 0,				/* slot index for CodeDirectory */
	CSSLOT_INFOSLOT = 1,
	CSSLOT_REQUIREMENTS = 2,
	CSSLOT_RESOURCEDIR = 3,
	CSSLOT_APPLICATION = 4,
	CSSLOT_ENTITLEMENTS = 5,

	CSSLOT_SIGNATURESLOT = 0x10000,			/* CMS Signature */

	CSTYPE_INDEX_REQUIREMENTS = 0x00000002,		/* compat with amfi */
	CSTYPE_INDEX_ENTITLEMENTS = 0x00000005,		/* compat with amfi */

	CS_HASHTYPE_SHA1 = 1
};


#define KERNEL_HAVE_CS_CODEDIRECTORY 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 spare1;					/* unused (must be zero) */
	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 */
	/* 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;

typedef 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>

__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 <sys/cdefs.h>

struct vnode;

struct cscsr_functions  {
	int		csr_version;
#define CSCSR_VERSION 1
	int		(*csr_validate_header)(const uint8_t *, size_t);
	const void*	(*csr_find_file_codedirectory)(struct vnode *, const uint8_t *, size_t, size_t *);
};

__BEGIN_DECLS
int	cs_enforcement(struct proc *);
int	cs_entitlements_blob_get(struct proc *, void **out_start, size_t *out_length);
uint8_t * cs_get_cdhash(struct proc *);
void	cs_register_cscsr(struct cscsr_functions *);

__END_DECLS

#ifdef XNU_KERNEL_PRIVATE

void	cs_init(void);
int	cs_allow_invalid(struct proc *);
int	cs_invalid_page(addr64_t);
int	sigpup_install(user_addr_t);
int	sigpup_drop(void);

extern int cs_debug;
extern int cs_validation;
#if !SECURE_KERNEL
extern int cs_enforcement_panic;
#endif

#endif /* XNU_KERNEL_PRIVATE */

#endif /* KERNEL */

#endif /* _SYS_CODESIGN_H_ */
Commit	Line	Data
2d21ac55 A	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
2d21ac55	32	/* code signing attributes of a process */
39236c6e A	33	#define CS_VALID 0x0000001 /* dynamically valid */
	34	#define CS_ADHOC 0x0000002 /* ad hoc signed */
	35
	36	#define CS_HARD 0x0000100 /* don't load invalid pages */
	37	#define CS_KILL 0x0000200 /* kill process if it becomes invalid */
	38	#define CS_CHECK_EXPIRATION 0x0000400 /* force expiration checking */
	39	#define CS_RESTRICT 0x0000800 /* tell dyld to treat restricted */
	40	#define CS_ENFORCEMENT 0x0001000 /* require enforcement */
	41
	42	#define CS_ALLOWED_MACHO 0x00ffffe
	43
	44	#define CS_EXEC_SET_HARD 0x0100000 /* set CS_HARD on any exec'ed process */
	45	#define CS_EXEC_SET_KILL 0x0200000 /* set CS_KILL on any exec'ed process */
	46	#define CS_EXEC_SET_ENFORCEMENT 0x0400000 /* set CS_ENFORCEMENT on any exec'ed process */
	47
	48	#define CS_KILLED 0x1000000 /* was killed by kernel for invalidity */
2d21ac55 A	49
	50	/* csops operations */
	51	#define CS_OPS_STATUS 0 /* return status */
	52	#define CS_OPS_MARKINVALID 1 /* invalidate process */
	53	#define CS_OPS_MARKHARD 2 /* set HARD flag */
	54	#define CS_OPS_MARKKILL 3 /* set KILL flag (sticky) */
39236c6e A	55	#ifdef KERNEL_PRIVATE
	56	/* CS_OPS_PIDPATH 4 */
	57	#endif
2d21ac55	58	#define CS_OPS_CDHASH 5 /* get code directory hash */
b0d623f7	59	#define CS_OPS_PIDOFFSET 6 /* get offset of active Mach-o slice */
6d2010ae A	60	#define CS_OPS_ENTITLEMENTS_BLOB 7 /* get entitlements blob */
6d2010ae A	61	#define CS_OPS_MARKRESTRICT 8 /* set RESTRICT flag (sticky) */
39236c6e A	62	#define CS_OPS_SET_STATUS 9 /* set codesign flags */
	63	#define CS_OPS_BLOB 10 /* get codesign blob */
	64	#define CS_OPS_IDENTITY 11 /* get codesign identity */
	65
	66	/* SigPUP */
	67	#define CS_OPS_SIGPUP_INSTALL 20
	68	#define CS_OPS_SIGPUP_DROP 21
	69	#define CS_OPS_SIGPUP_VALIDATE 22
	70
	71	struct sigpup_install_table {
	72	uint64_t data;
	73	uint64_t length;
	74	uint64_t path;
	75	};
	76
	77
	78	/*
	79	* Magic numbers used by Code Signing
	80	*/
	81	enum {
	82	CSMAGIC_REQUIREMENT = 0xfade0c00, /* single Requirement blob */
	83	CSMAGIC_REQUIREMENTS = 0xfade0c01, /* Requirements vector (internal requirements) */
	84	CSMAGIC_CODEDIRECTORY = 0xfade0c02, /* CodeDirectory blob */
	85	CSMAGIC_EMBEDDED_SIGNATURE = 0xfade0cc0, /* embedded form of signature data */
	86	CSMAGIC_EMBEDDED_SIGNATURE_OLD = 0xfade0b02, /* XXX */
	87	CSMAGIC_EMBEDDED_ENTITLEMENTS = 0xfade7171, /* embedded entitlements */
	88	CSMAGIC_DETACHED_SIGNATURE = 0xfade0cc1, /* multi-arch collection of embedded signatures */
	89	CSMAGIC_BLOBWRAPPER = 0xfade0b01, /* CMS Signature, among other things */
	90
	91	CS_SUPPORTSSCATTER = 0x20100,
	92
	93	CSSLOT_CODEDIRECTORY = 0, /* slot index for CodeDirectory */
	94	CSSLOT_INFOSLOT = 1,
	95	CSSLOT_REQUIREMENTS = 2,
	96	CSSLOT_RESOURCEDIR = 3,
	97	CSSLOT_APPLICATION = 4,
	98	CSSLOT_ENTITLEMENTS = 5,
	99
	100	CSSLOT_SIGNATURESLOT = 0x10000, /* CMS Signature */
	101
	102	CSTYPE_INDEX_REQUIREMENTS = 0x00000002, /* compat with amfi */
	103	CSTYPE_INDEX_ENTITLEMENTS = 0x00000005, /* compat with amfi */
	104
	105	CS_HASHTYPE_SHA1 = 1
	106	};
	107
	108
	109	#define KERNEL_HAVE_CS_CODEDIRECTORY 1
	110
	111	/*
	112	* C form of a CodeDirectory.
	113	*/
	114	typedef struct __CodeDirectory {
	115	uint32_t magic; /* magic number (CSMAGIC_CODEDIRECTORY) */
	116	uint32_t length; /* total length of CodeDirectory blob */
	117	uint32_t version; /* compatibility version */
	118	uint32_t flags; /* setup and mode flags */
	119	uint32_t hashOffset; /* offset of hash slot element at index zero */
	120	uint32_t identOffset; /* offset of identifier string */
	121	uint32_t nSpecialSlots; /* number of special hash slots */
	122	uint32_t nCodeSlots; /* number of ordinary (code) hash slots */
	123	uint32_t codeLimit; /* limit to main image signature range */
	124	uint8_t hashSize; /* size of each hash in bytes */
	125	uint8_t hashType; /* type of hash (cdHashType* constants) */
126	uint8_t spare1; /* unused (must be zero) */
127	uint8_t pageSize; /* log2(page size in bytes); 0 => infinite */
128	uint32_t spare2; /* unused (must be zero) */
129	/* Version 0x20100 */
130	uint32_t scatterOffset; /* offset of optional scatter vector */
131	/* followed by dynamic content as located by offset fields above */
132	} CS_CodeDirectory;
133
134	/*
135	* Structure of an embedded-signature SuperBlob
136	*/
137
138	typedef struct __BlobIndex {
139	uint32_t type; /* type of entry */
140	uint32_t offset; /* offset of entry */
141	} CS_BlobIndex;
142
143	typedef struct __SC_SuperBlob {
144	uint32_t magic; /* magic number */
145	uint32_t length; /* total length of SuperBlob */
146	uint32_t count; /* number of index entries following */
147	CS_BlobIndex index[]; /* (count) entries */
148	/* followed by Blobs in no particular order as indicated by offsets in index */
149	} CS_SuperBlob;
150
151	typedef struct __SC_GenericBlob {
152	uint32_t magic; /* magic number */
153	uint32_t length; /* total length of blob */
154	char data[];
155	} CS_GenericBlob;
156
157	typedef struct __SC_Scatter {
158	uint32_t count; // number of pages; zero for sentinel (only)
159	uint32_t base; // first page number
160	uint64_t targetOffset; // offset in target
161	uint64_t spare; // reserved
162	} SC_Scatter;
163
2d21ac55 A	164
	165	#ifndef KERNEL
	166
39236c6e	167	#include <sys/types.h>
2d21ac55	168
39236c6e	169	__BEGIN_DECLS
2d21ac55 A	170	/* code sign operations */
2d21ac55 A	171	int csops(pid_t pid, unsigned int ops, void * useraddr, size_t usersize);
316670eb	172	int csops_audittoken(pid_t pid, unsigned int ops, void * useraddr, size_t usersize, audit_token_t * token);
39236c6e A	173	__END_DECLS
	174
	175	#else /* !KERNEL */
	176
	177	#include <sys/cdefs.h>
	178
	179	struct vnode;
	180
	181	struct cscsr_functions {
	182	int csr_version;
	183	#define CSCSR_VERSION 1
	184	int (csr_validate_header)(const uint8_t , size_t);
	185	const void* (csr_find_file_codedirectory)(struct vnode , const uint8_t , size_t, size_t );
	186	};
	187
	188	__BEGIN_DECLS
	189	int cs_enforcement(struct proc *);
	190	int cs_entitlements_blob_get(struct proc , void out_start, size_t out_length);
	191	uint8_t * cs_get_cdhash(struct proc *);
	192	void cs_register_cscsr(struct cscsr_functions *);
2d21ac55 A	193
	194	__END_DECLS
	195
39236c6e A	196	#ifdef XNU_KERNEL_PRIVATE
	197
	198	void cs_init(void);
	199	int cs_allow_invalid(struct proc *);
	200	int cs_invalid_page(addr64_t);
	201	int sigpup_install(user_addr_t);
	202	int sigpup_drop(void);
	203
	204	extern int cs_debug;
	205	extern int cs_validation;
	206	#if !SECURE_KERNEL
	207	extern int cs_enforcement_panic;
	208	#endif
	209
	210	#endif /* XNU_KERNEL_PRIVATE */
	211
	212	#endif /* KERNEL */
2d21ac55 A	213
2d21ac55 A	214	#endif /* _SYS_CODESIGN_H_ */