X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/91447636331957f3d9b5ca5b508f07c526b0074d..b7266188b87f3620ec3f9f717e57194a7dd989fe:/bsd/netinet6/esp_core.c diff --git a/bsd/netinet6/esp_core.c b/bsd/netinet6/esp_core.c index 21daa3f41..3bae5bd18 100644 --- a/bsd/netinet6/esp_core.c +++ b/bsd/netinet6/esp_core.c @@ -1,3 +1,31 @@ +/* + * Copyright (c) 2008 Apple 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@ + */ + /* $FreeBSD: src/sys/netinet6/esp_core.c,v 1.1.2.4 2002/03/26 10:12:29 ume Exp $ */ /* $KAME: esp_core.c,v 1.50 2000/11/02 12:27:38 itojun Exp $ */ @@ -102,6 +130,7 @@ static int esp_des_blockdecrypt(const struct esp_algorithm *, static int esp_des_blockencrypt(const struct esp_algorithm *, struct secasvar *, u_int8_t *, u_int8_t *); static int esp_cbc_mature(struct secasvar *); +#if ALLCRYPTO static int esp_blowfish_schedule(const struct esp_algorithm *, struct secasvar *); static int esp_blowfish_schedlen(const struct esp_algorithm *); @@ -116,6 +145,7 @@ static int esp_cast128_blockdecrypt(const struct esp_algorithm *, struct secasvar *, u_int8_t *, u_int8_t *); static int esp_cast128_blockencrypt(const struct esp_algorithm *, struct secasvar *, u_int8_t *, u_int8_t *); +#endif /* ALLCRYPTO */ static int esp_3des_schedule(const struct esp_algorithm *, struct secasvar *); static int esp_3des_schedlen(const struct esp_algorithm *); @@ -132,34 +162,51 @@ static int esp_cbc_encrypt(struct mbuf *, size_t, size_t, #define MAXIVLEN 16 -static const struct esp_algorithm esp_algorithms[] = { +static const struct esp_algorithm des_cbc = { 8, -1, esp_descbc_mature, 64, 64, esp_des_schedlen, "des-cbc", esp_descbc_ivlen, esp_cbc_decrypt, esp_cbc_encrypt, esp_des_schedule, - esp_des_blockdecrypt, esp_des_blockencrypt, }, + esp_des_blockdecrypt, esp_des_blockencrypt, }; +static const struct esp_algorithm des3_cbc = { 8, 8, esp_cbc_mature, 192, 192, esp_3des_schedlen, "3des-cbc", esp_common_ivlen, esp_cbc_decrypt, esp_cbc_encrypt, esp_3des_schedule, - esp_3des_blockdecrypt, esp_3des_blockencrypt, }, + esp_3des_blockdecrypt, esp_3des_blockencrypt, }; +static const struct esp_algorithm null_esp = { 1, 0, esp_null_mature, 0, 2048, 0, "null", esp_common_ivlen, esp_null_decrypt, - esp_null_encrypt, NULL, }, + esp_null_encrypt, NULL, NULL, NULL }; +#if ALLCRYPTO +static const struct esp_algorithm blowfish_cbc = { 8, 8, esp_cbc_mature, 40, 448, esp_blowfish_schedlen, "blowfish-cbc", esp_common_ivlen, esp_cbc_decrypt, esp_cbc_encrypt, esp_blowfish_schedule, - esp_blowfish_blockdecrypt, esp_blowfish_blockencrypt, }, + esp_blowfish_blockdecrypt, esp_blowfish_blockencrypt, }; +static const struct esp_algorithm cast128_cbc = { 8, 8, esp_cbc_mature, 40, 128, esp_cast128_schedlen, "cast128-cbc", esp_common_ivlen, esp_cbc_decrypt, esp_cbc_encrypt, esp_cast128_schedule, - esp_cast128_blockdecrypt, esp_cast128_blockencrypt, }, + esp_cast128_blockdecrypt, esp_cast128_blockencrypt, }; +#endif /* ALLCRYPTO */ +static const struct esp_algorithm aes_cbc = { 16, 16, esp_cbc_mature, 128, 256, esp_aes_schedlen, "aes-cbc", esp_common_ivlen, esp_cbc_decrypt_aes, esp_cbc_encrypt_aes, esp_aes_schedule, - 0, 0 }, + 0, 0 }; + +static const struct esp_algorithm *esp_algorithms[] = { + &des_cbc, + &des3_cbc, + &null_esp, +#if ALLCRYPTO + &blowfish_cbc, + &cast128_cbc, +#endif /* ALLCRYPTO */ + &aes_cbc }; const struct esp_algorithm * @@ -169,17 +216,19 @@ esp_algorithm_lookup(idx) switch (idx) { case SADB_EALG_DESCBC: - return &esp_algorithms[0]; + return &des_cbc; case SADB_EALG_3DESCBC: - return &esp_algorithms[1]; + return &des3_cbc; case SADB_EALG_NULL: - return &esp_algorithms[2]; + return &null_esp; +#if ALLCRYPTO case SADB_X_EALG_BLOWFISHCBC: - return &esp_algorithms[3]; + return &blowfish_cbc; case SADB_X_EALG_CAST128CBC: - return &esp_algorithms[4]; + return &cast128_cbc; +#endif /* ALLCRYPTO */ case SADB_X_EALG_RIJNDAELCBC: - return &esp_algorithms[5]; + return &aes_cbc; default: return NULL; } @@ -194,8 +243,8 @@ esp_max_ivlen() ivlen = 0; for (idx = 0; idx < sizeof(esp_algorithms)/sizeof(esp_algorithms[0]); idx++) { - if (esp_algorithms[idx].ivlenval > ivlen) - ivlen = esp_algorithms[idx].ivlenval; + if (esp_algorithms[idx]->ivlenval > ivlen) + ivlen = esp_algorithms[idx]->ivlenval; } return ivlen; @@ -218,21 +267,29 @@ esp_schedule(algo, sav) return EINVAL; } + lck_mtx_lock(sadb_mutex); /* already allocated */ - if (sav->sched && sav->schedlen != 0) + if (sav->sched && sav->schedlen != 0) { + lck_mtx_unlock(sadb_mutex); return 0; + } /* no schedule necessary */ - if (!algo->schedule || !algo->schedlen) + if (!algo->schedule || !algo->schedlen) { + lck_mtx_unlock(sadb_mutex); return 0; - + } + sav->schedlen = (*algo->schedlen)(algo); - if (sav->schedlen < 0) + if ((signed) sav->schedlen < 0) { + lck_mtx_unlock(sadb_mutex); return EINVAL; + } //#### that malloc should be replaced by a saved buffer... sav->sched = _MALLOC(sav->schedlen, M_SECA, M_DONTWAIT); if (!sav->sched) { sav->schedlen = 0; + lck_mtx_unlock(sadb_mutex); return ENOBUFS; } @@ -245,12 +302,13 @@ esp_schedule(algo, sav) sav->sched = NULL; sav->schedlen = 0; } + lck_mtx_unlock(sadb_mutex); return error; } static int -esp_null_mature(sav) - struct secasvar *sav; +esp_null_mature( + __unused struct secasvar *sav) { /* anything is okay */ @@ -258,25 +316,25 @@ esp_null_mature(sav) } static int -esp_null_decrypt(m, off, sav, algo, ivlen) - struct mbuf *m; - size_t off; /* offset to ESP header */ - struct secasvar *sav; - const struct esp_algorithm *algo; - int ivlen; +esp_null_decrypt( + __unused struct mbuf *m, + __unused size_t off, /* offset to ESP header */ + __unused struct secasvar *sav, + __unused const struct esp_algorithm *algo, + __unused int ivlen) { return 0; /* do nothing */ } static int -esp_null_encrypt(m, off, plen, sav, algo, ivlen) - struct mbuf *m; - size_t off; /* offset to ESP header */ - size_t plen; /* payload length (to be encrypted) */ - struct secasvar *sav; - const struct esp_algorithm *algo; - int ivlen; +esp_null_encrypt( + __unused struct mbuf *m, + __unused size_t off, /* offset to ESP header */ + __unused size_t plen, /* payload length (to be encrypted) */ + __unused struct secasvar *sav, + __unused const struct esp_algorithm *algo, + __unused int ivlen) { return 0; /* do nothing */ @@ -325,9 +383,9 @@ esp_descbc_mature(sav) } static int -esp_descbc_ivlen(algo, sav) - const struct esp_algorithm *algo; - struct secasvar *sav; +esp_descbc_ivlen( + __unused const struct esp_algorithm *algo, + struct secasvar *sav) { if (!sav) @@ -340,19 +398,20 @@ esp_descbc_ivlen(algo, sav) } static int -esp_des_schedlen(algo) - const struct esp_algorithm *algo; +esp_des_schedlen( + __unused const struct esp_algorithm *algo) { return sizeof(des_key_schedule); } static int -esp_des_schedule(algo, sav) - const struct esp_algorithm *algo; - struct secasvar *sav; +esp_des_schedule( + __unused const struct esp_algorithm *algo, + struct secasvar *sav) { + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); if (des_key_sched((des_cblock *)_KEYBUF(sav->key_enc), *(des_key_schedule *)sav->sched)) return EINVAL; @@ -361,11 +420,11 @@ esp_des_schedule(algo, sav) } static int -esp_des_blockdecrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_des_blockdecrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { /* assumption: d has a good alignment */ @@ -376,11 +435,11 @@ esp_des_blockdecrypt(algo, sav, s, d) } static int -esp_des_blockencrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_des_blockencrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { /* assumption: d has a good alignment */ @@ -456,31 +515,33 @@ esp_cbc_mature(sav) return 0; } +#if ALLCRYPTO static int -esp_blowfish_schedlen(algo) - const struct esp_algorithm *algo; +esp_blowfish_schedlen( + __unused const struct esp_algorithm *algo) { return sizeof(BF_KEY); } static int -esp_blowfish_schedule(algo, sav) - const struct esp_algorithm *algo; - struct secasvar *sav; +esp_blowfish_schedule( + __unused const struct esp_algorithm *algo, + struct secasvar *sav) { + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); BF_set_key((BF_KEY *)sav->sched, _KEYLEN(sav->key_enc), - _KEYBUF(sav->key_enc)); + (u_int8_t *) _KEYBUF(sav->key_enc)); return 0; } static int -esp_blowfish_blockdecrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_blowfish_blockdecrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { /* HOLY COW! BF_decrypt() takes values in host byteorder */ BF_LONG t[2]; @@ -496,11 +557,11 @@ esp_blowfish_blockdecrypt(algo, sav, s, d) } static int -esp_blowfish_blockencrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_blowfish_blockencrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { /* HOLY COW! BF_encrypt() takes values in host byteorder */ BF_LONG t[2]; @@ -516,30 +577,30 @@ esp_blowfish_blockencrypt(algo, sav, s, d) } static int -esp_cast128_schedlen(algo) - const struct esp_algorithm *algo; +esp_cast128_schedlen( + __unused const struct esp_algorithm *algo) { return sizeof(u_int32_t) * 32; } static int -esp_cast128_schedule(algo, sav) - const struct esp_algorithm *algo; - struct secasvar *sav; +esp_cast128_schedule( + __unused const struct esp_algorithm *algo, + struct secasvar *sav) { - - set_cast128_subkey((u_int32_t *)sav->sched, _KEYBUF(sav->key_enc), + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); + set_cast128_subkey((u_int32_t *)sav->sched, (u_int8_t *) _KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc)); return 0; } static int -esp_cast128_blockdecrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_cast128_blockdecrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { if (_KEYLEN(sav->key_enc) <= 80 / 8) @@ -550,11 +611,11 @@ esp_cast128_blockdecrypt(algo, sav, s, d) } static int -esp_cast128_blockencrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_cast128_blockencrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { if (_KEYLEN(sav->key_enc) <= 80 / 8) @@ -563,25 +624,27 @@ esp_cast128_blockencrypt(algo, sav, s, d) cast128_encrypt_round16(d, s, (u_int32_t *)sav->sched); return 0; } +#endif /* ALLCRYPTO */ static int -esp_3des_schedlen(algo) - const struct esp_algorithm *algo; +esp_3des_schedlen( + __unused const struct esp_algorithm *algo) { return sizeof(des_key_schedule) * 3; } static int -esp_3des_schedule(algo, sav) - const struct esp_algorithm *algo; - struct secasvar *sav; +esp_3des_schedule( + __unused const struct esp_algorithm *algo, + struct secasvar *sav) { int error; des_key_schedule *p; int i; char *k; + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); p = (des_key_schedule *)sav->sched; k = _KEYBUF(sav->key_enc); for (i = 0; i < 3; i++) { @@ -593,11 +656,11 @@ esp_3des_schedule(algo, sav) } static int -esp_3des_blockdecrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_3des_blockdecrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { des_key_schedule *p; @@ -610,11 +673,11 @@ esp_3des_blockdecrypt(algo, sav, s, d) } static int -esp_3des_blockencrypt(algo, sav, s, d) - const struct esp_algorithm *algo; - struct secasvar *sav; - u_int8_t *s; - u_int8_t *d; +esp_3des_blockencrypt( + __unused const struct esp_algorithm *algo, + struct secasvar *sav, + u_int8_t *s, + u_int8_t *d) { des_key_schedule *p; @@ -627,9 +690,9 @@ esp_3des_blockencrypt(algo, sav, s, d) } static int -esp_common_ivlen(algo, sav) - const struct esp_algorithm *algo; - struct secasvar *sav; +esp_common_ivlen( + const struct esp_algorithm *algo, + __unused struct secasvar *sav) { if (!algo) @@ -702,7 +765,7 @@ esp_cbc_decrypt(m, off, sav, algo, ivlen) } /* grab iv */ - m_copydata(m, ivoff, ivlen, iv); + m_copydata(m, ivoff, ivlen, (caddr_t) iv); /* extend iv */ if (ivlen == blocklen) @@ -723,7 +786,7 @@ esp_cbc_decrypt(m, off, sav, algo, ivlen) if (m->m_pkthdr.len < bodyoff) { ipseclog((LOG_ERR, "esp_cbc_decrypt %s: bad len %d/%lu\n", - algo->name, m->m_pkthdr.len, (unsigned long)bodyoff)); + algo->name, m->m_pkthdr.len, (u_int32_t)bodyoff)); m_freem(m); return EINVAL; } @@ -764,7 +827,7 @@ esp_cbc_decrypt(m, off, sav, algo, ivlen) sp = mtod(s, u_int8_t *) + sn; } else { /* body is non-continuous */ - m_copydata(s, sn, blocklen, sbuf); + m_copydata(s, sn, blocklen, (caddr_t) sbuf); sp = sbuf; } @@ -837,13 +900,13 @@ esp_cbc_decrypt(m, off, sav, algo, ivlen) } static int -esp_cbc_encrypt(m, off, plen, sav, algo, ivlen) - struct mbuf *m; - size_t off; - size_t plen; - struct secasvar *sav; - const struct esp_algorithm *algo; - int ivlen; +esp_cbc_encrypt( + struct mbuf *m, + size_t off, + __unused size_t plen, + struct secasvar *sav, + const struct esp_algorithm *algo, + int ivlen) { struct mbuf *s; struct mbuf *d, *d0, *dp; @@ -903,11 +966,11 @@ esp_cbc_encrypt(m, off, plen, sav, algo, ivlen) /* put iv into the packet. if we are in derived mode, use seqno. */ if (derived) - m_copydata(m, ivoff, ivlen, iv); + m_copydata(m, ivoff, ivlen, (caddr_t) iv); else { bcopy(sav->iv, iv, ivlen); /* maybe it is better to overwrite dest, not source */ - m_copyback(m, ivoff, ivlen, iv); + m_copyback(m, ivoff, ivlen, (caddr_t) iv); } /* extend iv */ @@ -929,14 +992,14 @@ esp_cbc_encrypt(m, off, plen, sav, algo, ivlen) if (m->m_pkthdr.len < bodyoff) { ipseclog((LOG_ERR, "esp_cbc_encrypt %s: bad len %d/%lu\n", - algo->name, m->m_pkthdr.len, (unsigned long)bodyoff)); + algo->name, m->m_pkthdr.len, (u_int32_t)bodyoff)); m_freem(m); return EINVAL; } if ((m->m_pkthdr.len - bodyoff) % blocklen) { ipseclog((LOG_ERR, "esp_cbc_encrypt %s: " "payload length must be multiple of %lu\n", - algo->name, (unsigned long)algo->padbound)); + algo->name, (u_int32_t)algo->padbound)); m_freem(m); return EINVAL; } @@ -970,7 +1033,7 @@ esp_cbc_encrypt(m, off, plen, sav, algo, ivlen) sp = mtod(s, u_int8_t *) + sn; } else { /* body is non-continuous */ - m_copydata(s, sn, blocklen, sbuf); + m_copydata(s, sn, blocklen, (caddr_t) sbuf); sp = sbuf; } @@ -1101,7 +1164,7 @@ esp_auth(m0, skip, length, sav, sum) if (sizeof(sumbuf) < siz) { ipseclog((LOG_DEBUG, "esp_auth: AH_MAXSUMSIZE is too small: siz=%lu\n", - (u_long)siz)); + (u_int32_t)siz)); KERNEL_DEBUG(DBG_FNC_ESPAUTH | DBG_FUNC_END, 4,0,0,0,0); return EINVAL; } @@ -1125,25 +1188,23 @@ esp_auth(m0, skip, length, sav, sum) KERNEL_DEBUG(DBG_FNC_ESPAUTH | DBG_FUNC_END, 5,0,0,0,0); return error; } - lck_mtx_unlock(sadb_mutex); while (0 < length) { if (!m) panic("mbuf chain?"); if (m->m_len - off < length) { - (*algo->update)(&s, mtod(m, u_char *) + off, + (*algo->update)(&s, (caddr_t)(mtod(m, u_char *) + off), m->m_len - off); length -= m->m_len - off; m = m->m_next; off = 0; } else { - (*algo->update)(&s, mtod(m, u_char *) + off, length); + (*algo->update)(&s, (caddr_t)(mtod(m, u_char *) + off), length); break; } } - (*algo->result)(&s, sumbuf); + (*algo->result)(&s, (caddr_t) sumbuf); bcopy(sumbuf, sum, siz); /*XXX*/ - lck_mtx_lock(sadb_mutex); KERNEL_DEBUG(DBG_FNC_ESPAUTH | DBG_FUNC_END, 6,0,0,0,0); return 0; }