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Diffstat (limited to 'src/pluto/constants.h')
| -rw-r--r-- | src/pluto/constants.h | 1269 |
1 files changed, 1269 insertions, 0 deletions
diff --git a/src/pluto/constants.h b/src/pluto/constants.h new file mode 100644 index 000000000..3ab10be61 --- /dev/null +++ b/src/pluto/constants.h @@ -0,0 +1,1269 @@ + +/* manifest constants + * Copyright (C) 1997 Angelos D. Keromytis. + * Copyright (C) 1998-2002 D. Hugh Redelmeier. + * + * 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 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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. + * + * RCSID $Id: constants.h,v 1.20 2006/02/28 19:13:33 as Exp $ + */ + +#ifndef _CONSTANTS_H +#define _CONSTANTS_H + +extern const char compile_time_interop_options[]; + +extern void init_constants(void); + +/* + * NOTE:For debugging purposes, constants.c has tables to map numbers back to names. + * Any changes here should be reflected there. + */ + +#define elemsof(array) (sizeof(array) / sizeof(*(array))) /* number of elements in an array */ + +/* Many routines return only success or failure, but wish to describe + * the failure in a message. We use the convention that they return + * a NULL on success and a pointer to constant string on failure. + * The fact that the string is a constant is limiting, but it + * avoids storage management issues: the recipient is allowed to assume + * that the string will live "long enough" (usually forever). + * <freeswan.h> defines err_t for this return type. + */ + +typedef int bool; +#define FALSE 0 +#define TRUE 1 + +#define NULL_FD (-1) /* NULL file descriptor */ +#define dup_any(fd) ((fd) == NULL_FD? NULL_FD : dup(fd)) +#define close_any(fd) { if ((fd) != NULL_FD) { close(fd); (fd) = NULL_FD; } } + +#define BITS_PER_BYTE 8 + +#define streq(a, b) (strcmp((a), (b)) == 0) /* clearer shorthand */ +#define strcaseeq(a, b) (strcasecmp((a), (b)) == 0) /* clearer shorthand */ + +/* set type with room for at least 64 elements for ALG opts (was 32 in stock FS) */ + +typedef unsigned long long lset_t; +#define LEMPTY 0ULL +#define LELEM(opt) (1ULL << (opt)) +#define LRANGE(lwb, upb) LRANGES(LELEM(lwb), LELEM(upb)) +#define LRANGES(first, last) (last - first + last) +#define LHAS(set, elem) ((LELEM(elem) & (set)) != LEMPTY) +#define LIN(subset, set) (((subset) & (set)) == (subset)) +#define LDISJOINT(a, b) (((a) & (b)) == LEMPTY) + +/* Control and lock pathnames */ +#ifndef IPSEC_PIDDIR +# define IPSEC_PIDDIR "/var/run" +#endif +#ifndef DEFAULT_CTLBASE +# define DEFAULT_CTLBASE IPSEC_PIDDIR "/pluto" +#endif + +#define CTL_SUFFIX ".ctl" /* for UNIX domain socket pathname */ +#define LOCK_SUFFIX ".pid" /* for pluto's lock */ +#define INFO_SUFFIX ".info" /* for UNIX domain socket for apps */ + +/* Routines to check and display values. + * + * An enum_names describes an enumeration. + * enum_name() returns the name of an enum value, or NULL if invalid. + * enum_show() is like enum_name, except it formats a numeric representation + * for any invalid value (in a static area!) + * + * bitnames() formats a display of a set of named bits (in a static area) + */ + +struct enum_names { + unsigned long en_first; /* first value in range */ + unsigned long en_last; /* last value in range (inclusive) */ + const char *const *en_names; + const struct enum_names *en_next_range; /* descriptor of next range */ +}; + +typedef const struct enum_names enum_names; + +extern const char *enum_name(enum_names *ed, unsigned long val); +extern const char *enum_show(enum_names *ed, unsigned long val); +extern int enum_search(enum_names *ed, const char *string); + +extern bool testset(const char *const table[], lset_t val); +extern const char *bitnamesof(const char *const table[], lset_t val); + +/* sparse_names is much like enum_names, except values are + * not known to be contiguous or ordered. + * The array of names is ended with one with the name sparse_end + * (this avoids having to reserve a value to signify the end). + * Often appropriate for enums defined by others. + */ +struct sparse_name { + unsigned long val; + const char *const name; +}; +typedef const struct sparse_name sparse_names[]; + +extern const char *sparse_name(sparse_names sd, unsigned long val); +extern const char *sparse_val_show(sparse_names sd, unsigned long val); +extern const char sparse_end[]; + +#define FULL_INET_ADDRESS_SIZE 6 + +/* Group parameters from draft-ietf-ike-01.txt section 6 */ + +#define MODP_GENERATOR "2" + +#define MODP768_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1 " \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD " \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245 " \ + "E485B576 625E7EC6 F44C42E9 A63A3620 FFFFFFFF FFFFFFFF" + +#define MODP1024_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1 " \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD " \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245 " \ + "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED " \ + "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE65381 " \ + "FFFFFFFF FFFFFFFF" + +#define MODP1536_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1 " \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD " \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245 " \ + "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED " \ + "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D " \ + "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F " \ + "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D " \ + "670C354E 4ABC9804 F1746C08 CA237327 FFFFFFFF FFFFFFFF " + +/* draft-ietf-ipsec-ike-modp-groups-03.txt */ +#define MODP2048_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" \ + "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" \ + "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" \ + "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" \ + "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" \ + "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" \ + "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" \ + "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" \ + "15728E5A 8AACAA68 FFFFFFFF FFFFFFFF" + +#define MODP3072_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" \ + "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" \ + "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" \ + "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" \ + "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" \ + "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" \ + "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" \ + "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" \ + "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" \ + "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" \ + "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" \ + "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" \ + "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" \ + "43DB5BFC E0FD108E 4B82D120 A93AD2CA FFFFFFFF FFFFFFFF" + +#define MODP4096_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" \ + "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" \ + "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" \ + "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" \ + "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" \ + "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" \ + "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" \ + "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" \ + "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" \ + "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" \ + "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" \ + "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" \ + "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" \ + "43DB5BFC E0FD108E 4B82D120 A9210801 1A723C12 A787E6D7" \ + "88719A10 BDBA5B26 99C32718 6AF4E23C 1A946834 B6150BDA" \ + "2583E9CA 2AD44CE8 DBBBC2DB 04DE8EF9 2E8EFC14 1FBECAA6" \ + "287C5947 4E6BC05D 99B2964F A090C3A2 233BA186 515BE7ED" \ + "1F612970 CEE2D7AF B81BDD76 2170481C D0069127 D5B05AA9" \ + "93B4EA98 8D8FDDC1 86FFB7DC 90A6C08F 4DF435C9 34063199" \ + "FFFFFFFF FFFFFFFF" + +/* copy&pasted from rfc3526: */ +#define MODP6144_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1 29024E08" \ + "8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD EF9519B3 CD3A431B" \ + "302B0A6D F25F1437 4FE1356D 6D51C245 E485B576 625E7EC6 F44C42E9" \ + "A637ED6B 0BFF5CB6 F406B7ED EE386BFB 5A899FA5 AE9F2411 7C4B1FE6" \ + "49286651 ECE45B3D C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8" \ + "FD24CF5F 83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" \ + "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B E39E772C" \ + "180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9 DE2BCBF6 95581718" \ + "3995497C EA956AE5 15D22618 98FA0510 15728E5A 8AAAC42D AD33170D" \ + "04507A33 A85521AB DF1CBA64 ECFB8504 58DBEF0A 8AEA7157 5D060C7D" \ + "B3970F85 A6E1E4C7 ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226" \ + "1AD2EE6B F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" \ + "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31 43DB5BFC" \ + "E0FD108E 4B82D120 A9210801 1A723C12 A787E6D7 88719A10 BDBA5B26" \ + "99C32718 6AF4E23C 1A946834 B6150BDA 2583E9CA 2AD44CE8 DBBBC2DB" \ + "04DE8EF9 2E8EFC14 1FBECAA6 287C5947 4E6BC05D 99B2964F A090C3A2" \ + "233BA186 515BE7ED 1F612970 CEE2D7AF B81BDD76 2170481C D0069127" \ + "D5B05AA9 93B4EA98 8D8FDDC1 86FFB7DC 90A6C08F 4DF435C9 34028492" \ + "36C3FAB4 D27C7026 C1D4DCB2 602646DE C9751E76 3DBA37BD F8FF9406" \ + "AD9E530E E5DB382F 413001AE B06A53ED 9027D831 179727B0 865A8918" \ + "DA3EDBEB CF9B14ED 44CE6CBA CED4BB1B DB7F1447 E6CC254B 33205151" \ + "2BD7AF42 6FB8F401 378CD2BF 5983CA01 C64B92EC F032EA15 D1721D03" \ + "F482D7CE 6E74FEF6 D55E702F 46980C82 B5A84031 900B1C9E 59E7C97F" \ + "BEC7E8F3 23A97A7E 36CC88BE 0F1D45B7 FF585AC5 4BD407B2 2B4154AA" \ + "CC8F6D7E BF48E1D8 14CC5ED2 0F8037E0 A79715EE F29BE328 06A1D58B" \ + "B7C5DA76 F550AA3D 8A1FBFF0 EB19CCB1 A313D55C DA56C9EC 2EF29632" \ + "387FE8D7 6E3C0468 043E8F66 3F4860EE 12BF2D5B 0B7474D6 E694F91E" \ + "6DCC4024 FFFFFFFF FFFFFFFF" + +/* copy&pasted from rfc3526: */ +#define MODP8192_MODULUS \ + "FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1" \ + "29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD" \ + "EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245" \ + "E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED" \ + "EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D" \ + "C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F" \ + "83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D" \ + "670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B" \ + "E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9" \ + "DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510" \ + "15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64" \ + "ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7" \ + "ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B" \ + "F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C" \ + "BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31" \ + "43DB5BFC E0FD108E 4B82D120 A9210801 1A723C12 A787E6D7" \ + "88719A10 BDBA5B26 99C32718 6AF4E23C 1A946834 B6150BDA" \ + "2583E9CA 2AD44CE8 DBBBC2DB 04DE8EF9 2E8EFC14 1FBECAA6" \ + "287C5947 4E6BC05D 99B2964F A090C3A2 233BA186 515BE7ED" \ + "1F612970 CEE2D7AF B81BDD76 2170481C D0069127 D5B05AA9" \ + "93B4EA98 8D8FDDC1 86FFB7DC 90A6C08F 4DF435C9 34028492" \ + "36C3FAB4 D27C7026 C1D4DCB2 602646DE C9751E76 3DBA37BD" \ + "F8FF9406 AD9E530E E5DB382F 413001AE B06A53ED 9027D831" \ + "179727B0 865A8918 DA3EDBEB CF9B14ED 44CE6CBA CED4BB1B" \ + "DB7F1447 E6CC254B 33205151 2BD7AF42 6FB8F401 378CD2BF" \ + "5983CA01 C64B92EC F032EA15 D1721D03 F482D7CE 6E74FEF6" \ + "D55E702F 46980C82 B5A84031 900B1C9E 59E7C97F BEC7E8F3" \ + "23A97A7E 36CC88BE 0F1D45B7 FF585AC5 4BD407B2 2B4154AA" \ + "CC8F6D7E BF48E1D8 14CC5ED2 0F8037E0 A79715EE F29BE328" \ + "06A1D58B B7C5DA76 F550AA3D 8A1FBFF0 EB19CCB1 A313D55C" \ + "DA56C9EC 2EF29632 387FE8D7 6E3C0468 043E8F66 3F4860EE" \ + "12BF2D5B 0B7474D6 E694F91E 6DBE1159 74A3926F 12FEE5E4" \ + "38777CB6 A932DF8C D8BEC4D0 73B931BA 3BC832B6 8D9DD300" \ + "741FA7BF 8AFC47ED 2576F693 6BA42466 3AAB639C 5AE4F568" \ + "3423B474 2BF1C978 238F16CB E39D652D E3FDB8BE FC848AD9" \ + "22222E04 A4037C07 13EB57A8 1A23F0C7 3473FC64 6CEA306B" \ + "4BCBC886 2F8385DD FA9D4B7F A2C087E8 79683303 ED5BDD3A" \ + "062B3CF5 B3A278A6 6D2A13F8 3F44F82D DF310EE0 74AB6A36" \ + "4597E899 A0255DC1 64F31CC5 0846851D F9AB4819 5DED7EA1" \ + "B1D510BD 7EE74D73 FAF36BC3 1ECFA268 359046F4 EB879F92" \ + "4009438B 481C6CD7 889A002E D5EE382B C9190DA6 FC026E47" \ + "9558E447 5677E9AA 9E3050E2 765694DF C81F56E8 80B96E71" \ + "60C980DD 98EDD3DF FFFFFFFF FFFFFFFF" +#define LOCALSECRETSIZE (256 / BITS_PER_BYTE) + +/* limits on nonce sizes. See RFC2409 "The internet key exchange (IKE)" 5 */ +#define MINIMUM_NONCE_SIZE 8 /* bytes */ +#define DEFAULT_NONCE_SIZE 16 /* bytes */ +#define MAXIMUM_NONCE_SIZE 256 /* bytes */ + +#define COOKIE_SIZE 8 +#define MAX_ISAKMP_SPI_SIZE 16 + +#define MD2_DIGEST_SIZE (128 / BITS_PER_BYTE) +#define MD5_DIGEST_SIZE (128 / BITS_PER_BYTE) +#define SHA1_DIGEST_SIZE (160 / BITS_PER_BYTE) +#define SHA2_256_DIGEST_SIZE (256 / BITS_PER_BYTE) +#define SHA2_384_DIGEST_SIZE (384 / BITS_PER_BYTE) +#define SHA2_512_DIGEST_SIZE (512 / BITS_PER_BYTE) + +#define MD5_BLOCK_SIZE (512 / BITS_PER_BYTE) +#define SHA1_BLOCK_SIZE (512 / BITS_PER_BYTE) +#define SHA2_256_BLOCK_SIZE (512 / BITS_PER_BYTE) +#define SHA2_384_BLOCK_SIZE (1024 / BITS_PER_BYTE) +#define SHA2_512_BLOCK_SIZE (1024 / BITS_PER_BYTE) + +#define DES_CBC_BLOCK_SIZE (64 / BITS_PER_BYTE) + +#define DSS_QBITS 160 /* bits in DSS's "q" (FIPS 186-1) */ + +/* Maximum is required for SHA2_512 */ +#define MAX_DIGEST_LEN SHA2_512_DIGEST_SIZE +#define MAX_HASH_BLOCK_SIZE SHA2_512_BLOCK_SIZE + +/* RFC 2404 "HMAC-SHA-1-96" section 3 */ +#define HMAC_SHA1_KEY_LEN SHA1_DIGEST_SIZE + +/* RFC 2403 "HMAC-MD5-96" section 3 */ +#define HMAC_MD5_KEY_LEN MD5_DIGEST_SIZE + +#define IKE_UDP_PORT 500 + +/* RFC 2560 OCSP - certificate status */ + +typedef enum { + CERT_GOOD = 0, + CERT_REVOKED = 1, + CERT_UNKNOWN = 2, + CERT_UNDEFINED = 3 +} cert_status_t; + +/* RFC 2459 CRL reason codes */ + +extern enum_names crl_reason_names; + +typedef enum { + REASON_UNSPECIFIED = 0, + REASON_KEY_COMPROMISE = 1, + REASON_CA_COMPROMISE = 2, + REASON_AFFILIATION_CHANGED = 3, + REASON_SUPERSEDED = 4, + REASON_CESSATION_OF_OPERATON = 5, + REASON_CERTIFICATE_HOLD = 6, + REASON_REMOVE_FROM_CRL = 8 +} crl_reason_t; + +/* RFC 3706 Dead Peer Detection */ + +extern enum_names dpd_action_names; + +typedef enum { + DPD_ACTION_NONE = 0, + DPD_ACTION_CLEAR = 1, + DPD_ACTION_HOLD = 2, + DPD_ACTION_RESTART = 3, + DPD_ACTION_UNKNOWN = 4 +} dpd_action_t; + +/* Timer events */ + +extern enum_names timer_event_names; + +enum event_type { + EVENT_NULL, /* non-event */ + EVENT_REINIT_SECRET, /* Refresh cookie secret */ +#ifdef KLIPS + EVENT_SHUNT_SCAN, /* scan shunt eroutes known to kernel */ +#endif + EVENT_SO_DISCARD, /* discard unfinished state object */ + EVENT_RETRANSMIT, /* Retransmit packet */ + EVENT_SA_REPLACE, /* SA replacement event */ + EVENT_SA_REPLACE_IF_USED, /* SA replacement event */ + EVENT_SA_EXPIRE, /* SA expiration event */ + EVENT_NAT_T_KEEPALIVE, /* NAT Traversal Keepalive */ + EVENT_DPD, /* dead peer detection */ + EVENT_DPD_TIMEOUT, /* dead peer detection timeout */ + EVENT_LOG_DAILY /* reset certain log events/stats */ +}; + +#define EVENT_REINIT_SECRET_DELAY 3600 /* 1 hour */ +#define EVENT_RETRANSMIT_DELAY_0 10 /* 10 seconds */ + +/* Misc. stuff */ + +#define MAXIMUM_RETRANSMISSIONS 2 +#define MAXIMUM_RETRANSMISSIONS_INITIAL 20 + +#define MAX_INPUT_UDP_SIZE 65536 +#define MAX_OUTPUT_UDP_SIZE 65536 + +/* Version numbers */ + +#define ISAKMP_MAJOR_VERSION 0x1 +#define ISAKMP_MINOR_VERSION 0x0 + +extern enum_names version_names; + +/* Domain of Interpretation */ + +extern enum_names doi_names; + +#define ISAKMP_DOI_ISAKMP 0 +#define ISAKMP_DOI_IPSEC 1 + +/* IPsec DOI things */ + +#define IPSEC_DOI_SITUATION_LENGTH 4 +#define IPSEC_DOI_LDI_LENGTH 4 +#define IPSEC_DOI_SPI_SIZE 4 + +/* SPI value 0 is invalid and values 1-255 are reserved to IANA. + * ESP: RFC 2402 2.4; AH: RFC 2406 2.1 + * IPComp RFC 2393 substitutes a CPI in the place of an SPI. + * see also draft-shacham-ippcp-rfc2393bis-05.txt. + * We (FreeS/WAN) reserve 0x100 to 0xFFF for manual keying, so + * Pluto won't generate these values. + */ +#define IPSEC_DOI_SPI_MIN 0x100 +#define IPSEC_DOI_SPI_OUR_MIN 0x1000 + +/* debugging settings: a set of selections for reporting + * These would be more naturally situated in log.h, + * but they are shared with whack. + * IMPAIR_* actually change behaviour, usually badly, + * to aid in testing. Naturally, these are not included in ALL. + * + * NOTE: changes here must be done in concert with changes to DBGOPT_* + * in whack.c. A change to WHACK_MAGIC in whack.h will be required too. + */ +#ifdef DEBUG +extern const char *const debug_bit_names[]; +#endif + +#define DBG_RAW LELEM(0) /* raw packet I/O */ +#define DBG_CRYPT LELEM(1) /* encryption/decryption of messages */ +#define DBG_PARSING LELEM(2) /* show decoding of messages */ +#define DBG_EMITTING LELEM(3) /* show encoding of messages */ +#define DBG_CONTROL LELEM(4) /* control flow within Pluto */ +#define DBG_LIFECYCLE LELEM(5) /* SA lifecycle */ +#define DBG_KLIPS LELEM(6) /* messages to KLIPS */ +#define DBG_DNS LELEM(7) /* DNS activity */ +#define DBG_NATT LELEM(8) /* NAT-T */ +#define DBG_OPPO LELEM(9) /* opportunism */ +#define DBG_CONTROLMORE LELEM(10) /* more detailed debugging */ + +#define DBG_PRIVATE LELEM(11) /* private information: DANGER! */ + +#define IMPAIR0 12 /* first bit for IMPAIR_* */ + +#define IMPAIR_DELAY_ADNS_KEY_ANSWER LELEM(IMPAIR0+0) /* sleep before answering */ +#define IMPAIR_DELAY_ADNS_TXT_ANSWER LELEM(IMPAIR0+1) /* sleep before answering */ +#define IMPAIR_BUST_MI2 LELEM(IMPAIR0+2) /* make MI2 really large */ +#define IMPAIR_BUST_MR2 LELEM(IMPAIR0+3) /* make MI2 really large */ + +#define DBG_NONE 0 /* no options on, including impairments */ +#define DBG_ALL LRANGES(DBG_RAW, DBG_CONTROLMORE) /* all logging options on EXCEPT DBG_PRIVATE */ + +/* State of exchanges + * + * The name of the state describes the last message sent, not the + * message currently being input or output (except during retry). + * In effect, the state represents the last completed action. + * + * Messages are named [MQ][IR]n where + * - M stands for Main Mode (Phase 1); + * Q stands for Quick Mode (Phase 2) + * - I stands for Initiator; + * R stands for Responder + * - n, a digit, stands for the number of the message + * + * It would be more convenient if each state accepted a message + * and produced one. This is the case for states at the start + * or end of an exchange. To fix this, we pretend that there are + * MR0 and QR0 messages before the MI1 and QR1 messages. Similarly, + * we pretend that there are MR4 and QR2 messages. + * + * STATE_MAIN_R0 and STATE_QUICK_R0 are intermediate states (not + * retained between messages) representing the state that accepts the + * first message of an exchange has been read but not processed. + * + * state_microcode state_microcode_table in demux.c describes + * other important details. + */ + +extern enum_names state_names; +extern const char *const state_story[]; + +enum state_kind { + STATE_UNDEFINED, /* 0 -- most likely accident */ + + /* Opportunism states: see "Opportunistic Encryption" 2.2 */ + + OPPO_ACQUIRE, /* got an ACQUIRE message for this pair */ + OPPO_GW_DISCOVERED, /* got TXT specifying gateway */ + + /* IKE states */ + + STATE_MAIN_R0, + STATE_MAIN_I1, + STATE_MAIN_R1, + STATE_MAIN_I2, + STATE_MAIN_R2, + STATE_MAIN_I3, + STATE_MAIN_R3, + STATE_MAIN_I4, + + STATE_QUICK_R0, + STATE_QUICK_I1, + STATE_QUICK_R1, + STATE_QUICK_I2, + STATE_QUICK_R2, + + STATE_INFO, + STATE_INFO_PROTECTED, + + /* XAUTH states */ + + STATE_XAUTH_I0, /* initiator state (client) */ + STATE_XAUTH_R1, /* responder state (server) */ + STATE_XAUTH_I1, + STATE_XAUTH_R2, + STATE_XAUTH_I2, + STATE_XAUTH_R3, + + /* Mode Config pull states */ + + STATE_MODE_CFG_R0, /* responder state (server) */ + STATE_MODE_CFG_I1, /* initiator state (client) */ + STATE_MODE_CFG_R1, + STATE_MODE_CFG_I2, + + /* Mode Config push states */ + + STATE_MODE_CFG_I0, /* initiator state (client) */ + STATE_MODE_CFG_R3, /* responder state (server) */ + STATE_MODE_CFG_I3, + STATE_MODE_CFG_R4, + + STATE_IKE_ROOF +}; + +#define STATE_IKE_FLOOR STATE_MAIN_R0 + +#define PHASE1_INITIATOR_STATES (LELEM(STATE_MAIN_I1) | LELEM(STATE_MAIN_I2) \ + | LELEM(STATE_MAIN_I3) | LELEM(STATE_MAIN_I4)) +#define ISAKMP_SA_ESTABLISHED_STATES ( \ + LELEM(STATE_MAIN_R3) | LELEM(STATE_MAIN_I4) \ + | LELEM(STATE_XAUTH_R1) | LELEM(STATE_XAUTH_R2) | LELEM(STATE_XAUTH_R3) \ + | LELEM(STATE_XAUTH_I1) | LELEM(STATE_XAUTH_I2) \ + | LELEM(STATE_MODE_CFG_I1) | LELEM(STATE_MODE_CFG_R1) | LELEM(STATE_MODE_CFG_I2) \ + | LELEM(STATE_MODE_CFG_R3) | LELEM(STATE_MODE_CFG_I3) | LELEM(STATE_MODE_CFG_R4)) + +#define IS_PHASE1(s) ((STATE_MAIN_R0 <= (s) && (s) <= STATE_MAIN_I4) \ + || (STATE_XAUTH_I0 <= (s) && (s) <= STATE_XAUTH_R3) \ + || (STATE_MODE_CFG_R0 <= (s) && (s) <= STATE_MODE_CFG_R4)) + +#define IS_QUICK(s) (STATE_QUICK_R0 <= (s) && (s) <= STATE_QUICK_R2) +#define IS_ISAKMP_ENCRYPTED(s) (STATE_MAIN_I2 <= (s)) + +#define IS_ISAKMP_SA_ESTABLISHED(s) ( \ + (s) == STATE_MAIN_R3 \ + || (s) == STATE_MAIN_I4 \ + || (s) == STATE_XAUTH_I2 \ + || (s) == STATE_XAUTH_R3 \ + || (s) == STATE_MODE_CFG_R1 \ + || (s) == STATE_MODE_CFG_I2 \ + || (s) == STATE_MODE_CFG_I3 \ + || (s) == STATE_MODE_CFG_R4) + +#define IS_IPSEC_SA_ESTABLISHED(s) ((s) == STATE_QUICK_I2 || (s) == STATE_QUICK_R2) +#define IS_ONLY_INBOUND_IPSEC_SA_ESTABLISHED(s) ((s) == STATE_QUICK_R1) + +/* kind of struct connection + * Ordered (mostly) by concreteness. Order is exploited. + */ + +extern enum_names connection_kind_names; + +enum connection_kind { + CK_GROUP, /* policy group: instantiates to template */ + CK_TEMPLATE, /* abstract connection, with wildcard */ + CK_PERMANENT, /* normal connection */ + CK_INSTANCE, /* instance of template, created for a particular attempt */ + CK_GOING_AWAY /* instance being deleted -- don't delete again */ +}; + + +/* routing status. + * Note: routing ignores source address, but erouting does not! + * Note: a connection can only be routed if it is NEVER_NEGOTIATE + * or HAS_IPSEC_POLICY. + */ + +extern enum_names routing_story; + +/* note that this is assumed to be ordered! */ +enum routing_t { + RT_UNROUTED, /* unrouted */ + RT_UNROUTED_HOLD, /* unrouted, but HOLD shunt installed */ + RT_ROUTED_ECLIPSED, /* RT_ROUTED_PROSPECTIVE except bare HOLD or instance has eroute */ + RT_ROUTED_PROSPECTIVE, /* routed, and prospective shunt installed */ + RT_ROUTED_HOLD, /* routed, and HOLD shunt installed */ + RT_ROUTED_FAILURE, /* routed, and failure-context shunt installed */ + RT_ROUTED_TUNNEL, /* routed, and erouted to an IPSEC SA group */ + RT_UNROUTED_KEYED /* keyed, but not routed, on purpose */ +}; + +#define routed(rs) ((rs) > RT_UNROUTED_HOLD) +#define erouted(rs) ((rs) != RT_UNROUTED) +#define shunt_erouted(rs) (erouted(rs) && (rs) != RT_ROUTED_TUNNEL) + +/* Payload types + * RFC2408 Internet Security Association and Key Management Protocol (ISAKMP) + * section 3.1 + * + * RESERVED 14-127 + * Private USE 128-255 + */ + +extern enum_names payload_names; +extern const char *const payload_name[]; + +#define ISAKMP_NEXT_NONE 0 /* No other payload following */ +#define ISAKMP_NEXT_SA 1 /* Security Association */ +#define ISAKMP_NEXT_P 2 /* Proposal */ +#define ISAKMP_NEXT_T 3 /* Transform */ +#define ISAKMP_NEXT_KE 4 /* Key Exchange */ +#define ISAKMP_NEXT_ID 5 /* Identification */ +#define ISAKMP_NEXT_CERT 6 /* Certificate */ +#define ISAKMP_NEXT_CR 7 /* Certificate Request */ +#define ISAKMP_NEXT_HASH 8 /* Hash */ +#define ISAKMP_NEXT_SIG 9 /* Signature */ +#define ISAKMP_NEXT_NONCE 10 /* Nonce */ +#define ISAKMP_NEXT_N 11 /* Notification */ +#define ISAKMP_NEXT_D 12 /* Delete */ +#define ISAKMP_NEXT_VID 13 /* Vendor ID */ +#define ISAKMP_NEXT_ATTR 14 /* Mode config Attribute */ + +#define ISAKMP_NEXT_NATD_RFC 20 /* NAT-Traversal: NAT-D (rfc) */ +#define ISAKMP_NEXT_NATOA_RFC 21 /* NAT-Traversal: NAT-OA (rfc) */ +#define ISAKMP_NEXT_ROOF 22 /* roof on payload types */ + +#define ISAKMP_NEXT_NATD_DRAFTS 130 /* NAT-Traversal: NAT-D (drafts) */ +#define ISAKMP_NEXT_NATOA_DRAFTS 131 /* NAT-Traversal: NAT-OA (drafts) */ + +/* These values are to be used within the Type field of an Attribute (14) + * ISAKMP payload. + */ +#define ISAKMP_CFG_REQUEST 1 +#define ISAKMP_CFG_REPLY 2 +#define ISAKMP_CFG_SET 3 +#define ISAKMP_CFG_ACK 4 + +extern enum_names attr_msg_type_names; + +/* Mode Config attribute values */ +#define INTERNAL_IP4_ADDRESS 1 +#define INTERNAL_IP4_NETMASK 2 +#define INTERNAL_IP4_DNS 3 +#define INTERNAL_IP4_NBNS 4 +#define INTERNAL_ADDRESS_EXPIRY 5 +#define INTERNAL_IP4_DHCP 6 +#define APPLICATION_VERSION 7 +#define INTERNAL_IP6_ADDRESS 8 +#define INTERNAL_IP6_NETMASK 9 +#define INTERNAL_IP6_DNS 10 +#define INTERNAL_IP6_NBNS 11 +#define INTERNAL_IP6_DHCP 12 +#define INTERNAL_IP4_SUBNET 13 +#define SUPPORTED_ATTRIBUTES 14 +#define INTERNAL_IP6_SUBNET 15 + + +extern enum_names modecfg_attr_names; + +/* XAUTH attribute values */ +#define XAUTH_TYPE 16520 +#define XAUTH_USER_NAME 16521 +#define XAUTH_USER_PASSWORD 16522 +#define XAUTH_PASSCODE 16523 +#define XAUTH_MESSAGE 16524 +#define XAUTH_CHALLENGE 16525 +#define XAUTH_DOMAIN 16526 +#define XAUTH_STATUS 16527 +#define XAUTH_NEXT_PIN 16528 +#define XAUTH_ANSWER 16529 + +#define XAUTH_BASE XAUTH_TYPE + +extern enum_names xauth_attr_names; + +/* ISAKMP mode config attributes specific to the Unity vendor Id */ +#define UNITY_BANNER 28672 +#define UNITY_SAVE_PASSWD 28673 +#define UNITY_DEF_DOMAIN 28674 +#define UNITY_SPLITDNS_NAME 28675 +#define UNITY_SPLIT_INCLUDE 28676 +#define UNITY_NATT_PORT 28677 +#define UNITY_LOCAL_LAN 28678 +#define UNITY_PFS 28679 +#define UNITY_FW_TYPE 28680 +#define UNITY_BACKUP_SERVERS 28681 +#define UNITY_DDNS_HOSTNAME 28682 + +#define UNITY_BASE UNITY_BANNER + +extern enum_names unity_attr_names; + +/* XAUTH authentication types */ +#define XAUTH_TYPE_GENERIC 0 +#define XAUTH_TYPE_CHAP 1 +#define XAUTH_TYPE_OTP 2 +#define XAUTH_TYPE_SKEY 3 + +/* Values for XAUTH_STATUS */ +#define XAUTH_STATUS_FAIL 0 +#define XAUTH_STATUS_OK 1 + +extern enum_names xauth_type_names; + +/* Exchange types + * RFC2408 "Internet Security Association and Key Management Protocol (ISAKMP)" + * section 3.1 + * + * ISAKMP Future Use 6 - 31 + * DOI Specific Use 32 - 239 + * Private Use 240 - 255 + * + * Note: draft-ietf-ipsec-dhless-enc-mode-00.txt Appendix A + * defines "DHless RSA Encryption" as 6. + */ + +extern enum_names exchange_names; + +#define ISAKMP_XCHG_NONE 0 +#define ISAKMP_XCHG_BASE 1 +#define ISAKMP_XCHG_IDPROT 2 /* ID Protection */ +#define ISAKMP_XCHG_AO 3 /* Authentication Only */ +#define ISAKMP_XCHG_AGGR 4 /* Aggressive */ +#define ISAKMP_XCHG_INFO 5 /* Informational */ +#define ISAKMP_XCHG_MODE_CFG 6 /* Mode Config */ + +/* Extra exchange types, defined by Oakley + * RFC2409 "The Internet Key Exchange (IKE)", near end of Appendix A + */ +#define ISAKMP_XCHG_QUICK 32 /* Oakley Quick Mode */ +#define ISAKMP_XCHG_NGRP 33 /* Oakley New Group Mode */ +/* added in draft-ietf-ipsec-ike-01.txt, near end of Appendix A */ +#define ISAKMP_XCHG_ACK_INFO 34 /* Oakley Acknowledged Informational */ + +/* Flag bits */ + +extern const char *const flag_bit_names[]; + +#define ISAKMP_FLAG_ENCRYPTION 0x1 +#define ISAKMP_FLAG_COMMIT 0x2 + +/* Situation definition for IPsec DOI */ + +extern const char *const sit_bit_names[]; + +#define SIT_IDENTITY_ONLY 0x01 +#define SIT_SECRECY 0x02 +#define SIT_INTEGRITY 0x04 + +/* Protocol IDs + * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.1 + */ + +extern enum_names protocol_names; + +#define PROTO_ISAKMP 1 +#define PROTO_IPSEC_AH 2 +#define PROTO_IPSEC_ESP 3 +#define PROTO_IPCOMP 4 + +/* warning: trans_show uses enum_show, so same static buffer is used */ +#define trans_show(p, t) \ + ((p)==PROTO_IPSEC_AH ? enum_show(&ah_transformid_names, (t)) \ + : (p)==PROTO_IPSEC_ESP ? enum_show(&esp_transformid_names, (t)) \ + : (p)==PROTO_IPCOMP ? enum_show(&ipcomp_transformid_names, (t)) \ + : "??") + +/* many transform values are moved to freeswan/ipsec_policy.h */ + +extern enum_names isakmp_transformid_names; + +#define KEY_IKE 1 + +extern enum_names ah_transformid_names; +extern enum_names esp_transformid_names; +extern enum_names ipcomp_transformid_names; + +/* the following are from RFC 2393/draft-shacham-ippcp-rfc2393bis-05.txt 3.3 */ +typedef u_int16_t cpi_t; +#define IPCOMP_CPI_SIZE 2 +#define IPCOMP_FIRST_NEGOTIATED 256 +#define IPCOMP_LAST_NEGOTIATED 61439 + +/* Identification type values + * RFC 2407 The Internet IP security Domain of Interpretation for ISAKMP 4.6.2.1 + */ + +extern enum_names ident_names; +extern enum_names cert_type_names; +extern enum_names cert_policy_names; + +typedef enum certpolicy { + CERT_ALWAYS_SEND = 0, /* the default */ + CERT_SEND_IF_ASKED = 1, + CERT_NEVER_SEND = 2, + + CERT_YES_SEND = 3, /* synonym for CERT_ALWAYS_SEND */ + CERT_NO_SEND = 4 /* synonym for CERT_NEVER_SEND */ +} certpolicy_t; + +/* Policies for establishing an SA + * + * These are used to specify attributes (eg. encryption) and techniques + * (eg PFS) for an SA. + * Note: certain CD_ definitions in whack.c parallel these -- keep them + * in sync! + */ + +extern const char *const sa_policy_bit_names[]; +extern const char *prettypolicy(lset_t policy); + +/* ISAKMP auth techniques (none means never negotiate) */ +#define POLICY_PSK LELEM(0) +#define POLICY_RSASIG LELEM(1) + +#define POLICY_ISAKMP_SHIFT 0 /* log2(POLICY_PSK) */ +#define POLICY_ID_AUTH_MASK (POLICY_PSK | POLICY_RSASIG | POLICY_XAUTH_PSK | POLICY_XAUTH_RSASIG) +#define POLICY_ISAKMP_MASK POLICY_ID_AUTH_MASK /* all so far */ + +/* Quick Mode (IPSEC) attributes */ +#define POLICY_ENCRYPT LELEM(2) /* must be first of IPSEC policies */ +#define POLICY_AUTHENTICATE LELEM(3) /* must be second */ +#define POLICY_COMPRESS LELEM(4) /* must be third */ +#define POLICY_TUNNEL LELEM(5) +#define POLICY_PFS LELEM(6) +#define POLICY_DISABLEARRIVALCHECK LELEM(7) /* supress tunnel egress address checking */ + +#define POLICY_IPSEC_SHIFT 2 /* log2(POLICY_ENCRYPT) */ +#define POLICY_IPSEC_MASK LRANGES(POLICY_ENCRYPT, POLICY_DISABLEARRIVALCHECK) + +/* shunt attributes: what to do when routed without tunnel (2 bits) */ +#define POLICY_SHUNT_SHIFT 8 /* log2(POLICY_SHUNT_PASS) */ +#define POLICY_SHUNT_MASK (03ul << POLICY_SHUNT_SHIFT) + +#define POLICY_SHUNT_TRAP (0ul << POLICY_SHUNT_SHIFT) /* default: negotiate */ +#define POLICY_SHUNT_PASS (1ul << POLICY_SHUNT_SHIFT) +#define POLICY_SHUNT_DROP (2ul << POLICY_SHUNT_SHIFT) +#define POLICY_SHUNT_REJECT (3ul << POLICY_SHUNT_SHIFT) + +/* fail attributes: what to do with failed negotiation (2 bits) */ + +#define POLICY_FAIL_SHIFT 10 /* log2(POLICY_FAIL_PASS) */ +#define POLICY_FAIL_MASK (03ul << POLICY_FAIL_SHIFT) + +#define POLICY_FAIL_NONE (0ul << POLICY_FAIL_SHIFT) /* default */ +#define POLICY_FAIL_PASS (1ul << POLICY_FAIL_SHIFT) +#define POLICY_FAIL_DROP (2ul << POLICY_FAIL_SHIFT) +#define POLICY_FAIL_REJECT (3ul << POLICY_FAIL_SHIFT) + +/* connection policy + * Other policies could vary per state object. These live in connection. + */ +#define POLICY_DONT_REKEY LELEM(12) /* don't rekey state either Phase */ +#define POLICY_OPPO LELEM(13) /* is this opportunistic? */ +#define POLICY_GROUP LELEM(14) /* is this a group template? */ +#define POLICY_GROUTED LELEM(15) /* do we want this group routed? */ +#define POLICY_UP LELEM(16) /* do we want this up? */ +#define POLICY_MODECFG_PUSH LELEM(17) /* is modecfg pushed by server? */ +#define POLICY_XAUTH_PSK LELEM(18) /* do we support XAUTH????PreShared? */ +#define POLICY_XAUTH_RSASIG LELEM(19) /* do we support XAUTH????RSA? */ +#define POLICY_XAUTH_SERVER LELEM(20) /* are we an XAUTH server? */ +#define POLICY_DONT_REAUTH LELEM(21) /* don't reauthenticate on rekeying, IKEv2 only */ +#define POLICY_BEET LELEM(22) /* bound end2end tunnel, IKEv2 */ + +/* Any IPsec policy? If not, a connection description + * is only for ISAKMP SA, not IPSEC SA. (A pun, I admit.) + * Note: a connection can only be routed if it is NEVER_NEGOTIATE + * or HAS_IPSEC_POLICY. + */ +#define HAS_IPSEC_POLICY(p) (((p) & POLICY_IPSEC_MASK) != 0) + +/* Don't allow negotiation? */ +#define NEVER_NEGOTIATE(p) (LDISJOINT((p), POLICY_ID_AUTH_MASK)) + + +/* Oakley transform attributes + * draft-ietf-ipsec-ike-01.txt appendix A + */ + +extern enum_names oakley_attr_names; +extern const char *const oakley_attr_bit_names[]; + +#define OAKLEY_ENCRYPTION_ALGORITHM 1 +#define OAKLEY_HASH_ALGORITHM 2 +#define OAKLEY_AUTHENTICATION_METHOD 3 +#define OAKLEY_GROUP_DESCRIPTION 4 +#define OAKLEY_GROUP_TYPE 5 +#define OAKLEY_GROUP_PRIME 6 /* B/V */ +#define OAKLEY_GROUP_GENERATOR_ONE 7 /* B/V */ +#define OAKLEY_GROUP_GENERATOR_TWO 8 /* B/V */ +#define OAKLEY_GROUP_CURVE_A 9 /* B/V */ +#define OAKLEY_GROUP_CURVE_B 10 /* B/V */ +#define OAKLEY_LIFE_TYPE 11 +#define OAKLEY_LIFE_DURATION 12 /* B/V */ +#define OAKLEY_PRF 13 +#define OAKLEY_KEY_LENGTH 14 +#define OAKLEY_FIELD_SIZE 15 +#define OAKLEY_GROUP_ORDER 16 /* B/V */ +#define OAKLEY_BLOCK_SIZE 17 + +/* for each Oakley attribute, which enum_names describes its values? */ +extern enum_names *oakley_attr_val_descs[]; + +/* IPsec DOI attributes + * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.5 + */ + +extern enum_names ipsec_attr_names; + +#define SA_LIFE_TYPE 1 +#define SA_LIFE_DURATION 2 /* B/V */ +#define GROUP_DESCRIPTION 3 +#define ENCAPSULATION_MODE 4 +#define AUTH_ALGORITHM 5 +#define KEY_LENGTH 6 +#define KEY_ROUNDS 7 +#define COMPRESS_DICT_SIZE 8 +#define COMPRESS_PRIVATE_ALG 9 /* B/V */ + +/* for each IPsec attribute, which enum_names describes its values? */ +extern enum_names *ipsec_attr_val_descs[]; + +/* SA Lifetime Type attribute + * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.5 + * Default time specified in 4.5 + * + * There are two defaults for IPSEC SA lifetime, SA_LIFE_DURATION_DEFAULT, + * and PLUTO_SA_LIFE_DURATION_DEFAULT. + * SA_LIFE_DURATION_DEFAULT is specified in RFC2407 "The Internet IP + * Security Domain of Interpretation for ISAKMP" 4.5. It applies when + * an ISAKMP negotiation does not explicitly specify a life duration. + * PLUTO_SA_LIFE_DURATION_DEFAULT is specified in pluto(8). It applies + * when a connection description does not specify --ipseclifetime. + * The value of SA_LIFE_DURATION_MAXIMUM is our local policy. + */ + +extern enum_names sa_lifetime_names; + +#define SA_LIFE_TYPE_SECONDS 1 +#define SA_LIFE_TYPE_KBYTES 2 + +#define SA_LIFE_DURATION_DEFAULT 28800 /* eight hours (RFC2407 4.5) */ +#define PLUTO_SA_LIFE_DURATION_DEFAULT 3600 /* one hour (pluto(8)) */ +#define SA_LIFE_DURATION_MAXIMUM 86400 /* one day */ + +#define SA_REPLACEMENT_MARGIN_DEFAULT 540 /* (IPSEC & IKE) nine minutes */ +#define SA_REPLACEMENT_FUZZ_DEFAULT 100 /* (IPSEC & IKE) 100% of MARGIN */ +#define SA_REPLACEMENT_RETRIES_DEFAULT 3 /* (IPSEC & IKE) */ + +#define SA_LIFE_DURATION_K_DEFAULT 0xFFFFFFFFlu + +/* Encapsulation Mode attribute */ + +extern enum_names enc_mode_names; + +#define ENCAPSULATION_MODE_UNSPECIFIED 0 /* not legal -- used internally */ +#define ENCAPSULATION_MODE_TUNNEL 1 +#define ENCAPSULATION_MODE_TRANSPORT 2 + +#define ENCAPSULATION_MODE_UDP_TUNNEL_RFC 3 +#define ENCAPSULATION_MODE_UDP_TRANSPORT_RFC 4 + +#define ENCAPSULATION_MODE_UDP_TUNNEL_DRAFTS 61443 +#define ENCAPSULATION_MODE_UDP_TRANSPORT_DRAFTS 61444 + +/* Auth Algorithm attribute */ + +extern enum_names auth_alg_names, extended_auth_alg_names; + +#define AUTH_ALGORITHM_NONE 0 /* our private designation */ +#define AUTH_ALGORITHM_HMAC_MD5 1 +#define AUTH_ALGORITHM_HMAC_SHA1 2 +#define AUTH_ALGORITHM_DES_MAC 3 +#define AUTH_ALGORITHM_KPDK 4 +#define AUTH_ALGORITHM_HMAC_SHA2_256 5 +#define AUTH_ALGORITHM_HMAC_SHA2_384 6 +#define AUTH_ALGORITHM_HMAC_SHA2_512 7 +#define AUTH_ALGORITHM_HMAC_RIPEMD 8 +#define AUTH_ALGORITHM_NULL 251 + +/* Oakley Lifetime Type attribute + * draft-ietf-ipsec-ike-01.txt appendix A + * As far as I can see, there is not specification for + * OAKLEY_ISAKMP_SA_LIFETIME_DEFAULT. This could lead to interop problems! + * For no particular reason, we chose three hours. + * The value of OAKLEY_ISAKMP_SA_LIFETIME_MAXIMUM is our local policy. + */ +extern enum_names oakley_lifetime_names; + +#define OAKLEY_LIFE_SECONDS 1 +#define OAKLEY_LIFE_KILOBYTES 2 + +#define OAKLEY_ISAKMP_SA_LIFETIME_DEFAULT 10800 /* three hours */ +#define OAKLEY_ISAKMP_SA_LIFETIME_MAXIMUM 86400 /* one day */ + +/* Oakley PRF attribute (none defined) + * draft-ietf-ipsec-ike-01.txt appendix A + */ +extern enum_names oakley_prf_names; + +/* HMAC (see rfc2104.txt) */ + +#define HMAC_IPAD 0x36 +#define HMAC_OPAD 0x5C + +/* Oakley Encryption Algorithm attribute + * draft-ietf-ipsec-ike-01.txt appendix A + * and from http://www.isi.edu/in-notes/iana/assignments/ipsec-registry + */ + +extern enum_names oakley_enc_names; + +#define OAKLEY_DES_CBC 1 +#define OAKLEY_IDEA_CBC 2 +#define OAKLEY_BLOWFISH_CBC 3 +#define OAKLEY_RC5_R16_B64_CBC 4 +#define OAKLEY_3DES_CBC 5 +#define OAKLEY_CAST_CBC 6 +#define OAKLEY_AES_CBC 7 + +#define OAKLEY_MARS_CBC 65001 +#define OAKLEY_RC6_CBC 65002 +#define OAKLEY_ID_65003 65003 +#define OAKLEY_SERPENT_CBC 65004 +#define OAKLEY_TWOFISH_CBC 65005 + +#define OAKLEY_TWOFISH_CBC_SSH 65289 + +#define OAKLEY_ENCRYPT_MAX 65535 /* pretty useless :) */ + +/* Oakley Hash Algorithm attribute + * draft-ietf-ipsec-ike-01.txt appendix A + * and from http://www.isi.edu/in-notes/iana/assignments/ipsec-registry + */ + +extern enum_names oakley_hash_names; + +#define OAKLEY_MD5 1 +#define OAKLEY_SHA 2 +#define OAKLEY_TIGER 3 +#define OAKLEY_SHA2_256 4 +#define OAKLEY_SHA2_384 5 +#define OAKLEY_SHA2_512 6 + +#define OAKLEY_HASH_MAX 7 + +/* Oakley Authentication Method attribute + * draft-ietf-ipsec-ike-01.txt appendix A + * Goofy Hybrid extensions from draft-ietf-ipsec-isakmp-hybrid-auth-05.txt + * Goofy XAUTH extensions from draft-ietf-ipsec-isakmp-xauth-06.txt + */ + +extern enum_names oakley_auth_names; + +#define OAKLEY_PRESHARED_KEY 1 +#define OAKLEY_DSS_SIG 2 +#define OAKLEY_RSA_SIG 3 +#define OAKLEY_RSA_ENC 4 +#define OAKLEY_RSA_ENC_REV 5 +#define OAKLEY_ELGAMAL_ENC 6 +#define OAKLEY_ELGAMAL_ENC_REV 7 + +#define OAKLEY_AUTH_ROOF 8 /* roof on auth values THAT WE SUPPORT */ + +#define HybridInitRSA 64221 +#define HybridRespRSA 64222 +#define HybridInitDSS 64223 +#define HybridRespDSS 64224 + +#define XAUTHInitPreShared 65001 +#define XAUTHRespPreShared 65002 +#define XAUTHInitDSS 65003 +#define XAUTHRespDSS 65004 +#define XAUTHInitRSA 65005 +#define XAUTHRespRSA 65006 +#define XAUTHInitRSAEncryption 65007 +#define XAUTHRespRSAEncryption 65008 +#define XAUTHInitRSARevisedEncryption 65009 +#define XAUTHRespRSARevisedEncryption 65010 + +/* Oakley Group Description attribute + * draft-ietf-ipsec-ike-01.txt appendix A + */ +extern enum_names oakley_group_names; + +#define OAKLEY_GROUP_MODP768 1 +#define OAKLEY_GROUP_MODP1024 2 +#define OAKLEY_GROUP_GP155 3 +#define OAKLEY_GROUP_GP185 4 +#define OAKLEY_GROUP_MODP1536 5 + +#define OAKLEY_GROUP_MODP2048 14 +#define OAKLEY_GROUP_MODP3072 15 +#define OAKLEY_GROUP_MODP4096 16 +#define OAKLEY_GROUP_MODP6144 17 +#define OAKLEY_GROUP_MODP8192 18 +/* you must also touch: constants.c, crypto.c */ + +/* Oakley Group Type attribute + * draft-ietf-ipsec-ike-01.txt appendix A + */ +extern enum_names oakley_group_type_names; + +#define OAKLEY_GROUP_TYPE_MODP 1 +#define OAKLEY_GROUP_TYPE_ECP 2 +#define OAKLEY_GROUP_TYPE_EC2N 3 + + +/* Notify messages -- error types + * See RFC2408 ISAKMP 3.14.1 + */ + +extern enum_names notification_names; +extern enum_names ipsec_notification_names; + +typedef enum { + NOTHING_WRONG = 0, /* unofficial! */ + + INVALID_PAYLOAD_TYPE = 1, + DOI_NOT_SUPPORTED = 2, + SITUATION_NOT_SUPPORTED = 3, + INVALID_COOKIE = 4, + INVALID_MAJOR_VERSION = 5, + INVALID_MINOR_VERSION = 6, + INVALID_EXCHANGE_TYPE = 7, + INVALID_FLAGS = 8, + INVALID_MESSAGE_ID = 9, + INVALID_PROTOCOL_ID = 10, + INVALID_SPI = 11, + INVALID_TRANSFORM_ID = 12, + ATTRIBUTES_NOT_SUPPORTED = 13, + NO_PROPOSAL_CHOSEN = 14, + BAD_PROPOSAL_SYNTAX = 15, + PAYLOAD_MALFORMED = 16, + INVALID_KEY_INFORMATION = 17, + INVALID_ID_INFORMATION = 18, + INVALID_CERT_ENCODING = 19, + INVALID_CERTIFICATE = 20, + CERT_TYPE_UNSUPPORTED = 21, + INVALID_CERT_AUTHORITY = 22, + INVALID_HASH_INFORMATION = 23, + AUTHENTICATION_FAILED = 24, + INVALID_SIGNATURE = 25, + ADDRESS_NOTIFICATION = 26, + NOTIFY_SA_LIFETIME = 27, + CERTIFICATE_UNAVAILABLE = 28, + UNSUPPORTED_EXCHANGE_TYPE = 29, + UNEQUAL_PAYLOAD_LENGTHS = 30, + + /* ISAKMP status type */ + CONNECTED = 16384, + + /* IPSEC DOI additions; status types (RFC2407 IPSEC DOI 4.6.3) + * These must be sent under the protection of an ISAKMP SA. + */ + IPSEC_RESPONDER_LIFETIME = 24576, + IPSEC_REPLAY_STATUS = 24577, + IPSEC_INITIAL_CONTACT = 24578, + + /* RFC 3706 DPD */ + R_U_THERE = 36136, + R_U_THERE_ACK = 36137 + + } notification_t; + + +/* Public key algorithm number + * Same numbering as used in DNSsec + * See RFC 2535 DNSsec 3.2 The KEY Algorithm Number Specification. + * Also found in BIND 8.2.2 include/isc/dst.h as DST algorithm codes. + */ + +enum pubkey_alg +{ + PUBKEY_ALG_RSA = 1, + PUBKEY_ALG_DSA = 3, +}; + +/* Limits on size of RSA moduli. + * The upper bound matches that of DNSsec (see RFC 2537). + * The lower bound must be more than 11 octets for certain + * the encoding to work, but it must be much larger for any + * real security. For now, we require 512 bits. + */ + +#define RSA_MIN_OCTETS_RFC 12 + +#define RSA_MIN_OCTETS (512 / BITS_PER_BYTE) +#define RSA_MIN_OCTETS_UGH "RSA modulus too small for security: less than 512 bits" + +#define RSA_MAX_OCTETS (8192 / BITS_PER_BYTE) +#define RSA_MAX_OCTETS_UGH "RSA modulus too large: more than 8192 bits" + +/* Note: RFC 2537 encoding adds a few bytes. If you use a small + * modulus like 3, the overhead is only 2 bytes + */ +#define RSA_MAX_ENCODING_BYTES (RSA_MAX_OCTETS + 2) + +/* socket address family info */ + +struct af_info +{ + int af; + const char *name; + size_t ia_sz; + size_t sa_sz; + int mask_cnt; + u_int8_t id_addr, id_subnet, id_range; + const ip_address *any; + const ip_subnet *none; /* 0.0.0.0/32 or IPv6 equivalent */ + const ip_subnet *all; /* 0.0.0.0/0 or IPv6 equivalent */ +}; + +extern const struct af_info + af_inet4_info, + af_inet6_info; + +extern const struct af_info *aftoinfo(int af); + +extern enum_names af_names; + +#define subnetisaddr(sn, a) (subnetishost(sn) && addrinsubnet((a), (sn))) +extern bool subnetisnone(const ip_subnet *sn); + +/* BIND enumerated types */ + +extern enum_names + rr_qtype_names, + rr_type_names, + rr_class_names; + +/* How authenticated is info that might have come from DNS? + * In order of increasing confidence. + */ +enum dns_auth_level { + DAL_UNSIGNED, /* AD in response, but no signature: no authentication */ + DAL_NOTSEC, /* no AD in response: authentication impossible */ + DAL_SIGNED, /* AD and signature in response: authentic */ + DAL_LOCAL /* locally provided (pretty good) */ +}; + +/* + * define a macro for use in error messages + */ + +#ifdef USE_KEYRR +#define RRNAME "TXT or KEY" +#else +#define RRNAME "TXT" +#endif + +/* natt traversal types */ +extern const char *const natt_type_bitnames[]; + +#endif /* _CONSTANTS_H */ |