A library for setting up Secure Socket Layer (SSL) connections and verifying remote hosts using certificates. Contains only the source files for mbed platform implementation of the library.
Dependents: HTTPClient-SSL HTTPClient-SSL HTTPClient-SSL HTTPClient-SSL
src/tls.c@0:b86d15c6ba29, 2015-01-19 (annotated)
- Committer:
- Vanger
- Date:
- Mon Jan 19 21:45:42 2015 +0000
- Revision:
- 0:b86d15c6ba29
Updated CyaSSL Library to 3.3.0. Changed Settings and functions to be implemented for mbed platforms
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Vanger | 0:b86d15c6ba29 | 1 | /* tls.c |
Vanger | 0:b86d15c6ba29 | 2 | * |
Vanger | 0:b86d15c6ba29 | 3 | * Copyright (C) 2006-2014 wolfSSL Inc. |
Vanger | 0:b86d15c6ba29 | 4 | * |
Vanger | 0:b86d15c6ba29 | 5 | * This file is part of CyaSSL. |
Vanger | 0:b86d15c6ba29 | 6 | * |
Vanger | 0:b86d15c6ba29 | 7 | * CyaSSL is free software; you can redistribute it and/or modify |
Vanger | 0:b86d15c6ba29 | 8 | * it under the terms of the GNU General Public License as published by |
Vanger | 0:b86d15c6ba29 | 9 | * the Free Software Foundation; either version 2 of the License, or |
Vanger | 0:b86d15c6ba29 | 10 | * (at your option) any later version. |
Vanger | 0:b86d15c6ba29 | 11 | * |
Vanger | 0:b86d15c6ba29 | 12 | * CyaSSL is distributed in the hope that it will be useful, |
Vanger | 0:b86d15c6ba29 | 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Vanger | 0:b86d15c6ba29 | 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Vanger | 0:b86d15c6ba29 | 15 | * GNU General Public License for more details. |
Vanger | 0:b86d15c6ba29 | 16 | * |
Vanger | 0:b86d15c6ba29 | 17 | * You should have received a copy of the GNU General Public License |
Vanger | 0:b86d15c6ba29 | 18 | * along with this program; if not, write to the Free Software |
Vanger | 0:b86d15c6ba29 | 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
Vanger | 0:b86d15c6ba29 | 20 | */ |
Vanger | 0:b86d15c6ba29 | 21 | |
Vanger | 0:b86d15c6ba29 | 22 | #ifdef HAVE_CONFIG_H |
Vanger | 0:b86d15c6ba29 | 23 | #include <config.h> |
Vanger | 0:b86d15c6ba29 | 24 | #endif |
Vanger | 0:b86d15c6ba29 | 25 | |
Vanger | 0:b86d15c6ba29 | 26 | #include <cyassl/ctaocrypt/settings.h> |
Vanger | 0:b86d15c6ba29 | 27 | |
Vanger | 0:b86d15c6ba29 | 28 | #include <cyassl/ssl.h> |
Vanger | 0:b86d15c6ba29 | 29 | #include <cyassl/internal.h> |
Vanger | 0:b86d15c6ba29 | 30 | #include <cyassl/error-ssl.h> |
Vanger | 0:b86d15c6ba29 | 31 | #include <cyassl/ctaocrypt/hmac.h> |
Vanger | 0:b86d15c6ba29 | 32 | |
Vanger | 0:b86d15c6ba29 | 33 | |
Vanger | 0:b86d15c6ba29 | 34 | |
Vanger | 0:b86d15c6ba29 | 35 | #ifndef NO_TLS |
Vanger | 0:b86d15c6ba29 | 36 | |
Vanger | 0:b86d15c6ba29 | 37 | |
Vanger | 0:b86d15c6ba29 | 38 | #ifndef min |
Vanger | 0:b86d15c6ba29 | 39 | |
Vanger | 0:b86d15c6ba29 | 40 | static INLINE word32 min(word32 a, word32 b) |
Vanger | 0:b86d15c6ba29 | 41 | { |
Vanger | 0:b86d15c6ba29 | 42 | return a > b ? b : a; |
Vanger | 0:b86d15c6ba29 | 43 | } |
Vanger | 0:b86d15c6ba29 | 44 | |
Vanger | 0:b86d15c6ba29 | 45 | #endif /* min */ |
Vanger | 0:b86d15c6ba29 | 46 | |
Vanger | 0:b86d15c6ba29 | 47 | |
Vanger | 0:b86d15c6ba29 | 48 | #ifdef CYASSL_SHA384 |
Vanger | 0:b86d15c6ba29 | 49 | #define P_HASH_MAX_SIZE SHA384_DIGEST_SIZE |
Vanger | 0:b86d15c6ba29 | 50 | #else |
Vanger | 0:b86d15c6ba29 | 51 | #define P_HASH_MAX_SIZE SHA256_DIGEST_SIZE |
Vanger | 0:b86d15c6ba29 | 52 | #endif |
Vanger | 0:b86d15c6ba29 | 53 | |
Vanger | 0:b86d15c6ba29 | 54 | /* compute p_hash for MD5, SHA-1, SHA-256, or SHA-384 for TLSv1 PRF */ |
Vanger | 0:b86d15c6ba29 | 55 | static int p_hash(byte* result, word32 resLen, const byte* secret, |
Vanger | 0:b86d15c6ba29 | 56 | word32 secLen, const byte* seed, word32 seedLen, int hash) |
Vanger | 0:b86d15c6ba29 | 57 | { |
Vanger | 0:b86d15c6ba29 | 58 | word32 len = P_HASH_MAX_SIZE; |
Vanger | 0:b86d15c6ba29 | 59 | word32 times; |
Vanger | 0:b86d15c6ba29 | 60 | word32 lastLen; |
Vanger | 0:b86d15c6ba29 | 61 | word32 lastTime; |
Vanger | 0:b86d15c6ba29 | 62 | word32 i; |
Vanger | 0:b86d15c6ba29 | 63 | word32 idx = 0; |
Vanger | 0:b86d15c6ba29 | 64 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 65 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 66 | byte* previous; |
Vanger | 0:b86d15c6ba29 | 67 | byte* current; |
Vanger | 0:b86d15c6ba29 | 68 | Hmac* hmac; |
Vanger | 0:b86d15c6ba29 | 69 | #else |
Vanger | 0:b86d15c6ba29 | 70 | byte previous[P_HASH_MAX_SIZE]; /* max size */ |
Vanger | 0:b86d15c6ba29 | 71 | byte current[P_HASH_MAX_SIZE]; /* max size */ |
Vanger | 0:b86d15c6ba29 | 72 | Hmac hmac[1]; |
Vanger | 0:b86d15c6ba29 | 73 | #endif |
Vanger | 0:b86d15c6ba29 | 74 | |
Vanger | 0:b86d15c6ba29 | 75 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 76 | previous = (byte*)XMALLOC(P_HASH_MAX_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 77 | current = (byte*)XMALLOC(P_HASH_MAX_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 78 | hmac = (Hmac*)XMALLOC(sizeof(Hmac), NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 79 | |
Vanger | 0:b86d15c6ba29 | 80 | if (previous == NULL || current == NULL || hmac == NULL) { |
Vanger | 0:b86d15c6ba29 | 81 | if (previous) XFREE(previous, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 82 | if (current) XFREE(current, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 83 | if (hmac) XFREE(hmac, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 84 | |
Vanger | 0:b86d15c6ba29 | 85 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 86 | } |
Vanger | 0:b86d15c6ba29 | 87 | #endif |
Vanger | 0:b86d15c6ba29 | 88 | |
Vanger | 0:b86d15c6ba29 | 89 | switch (hash) { |
Vanger | 0:b86d15c6ba29 | 90 | #ifndef NO_MD5 |
Vanger | 0:b86d15c6ba29 | 91 | case md5_mac: |
Vanger | 0:b86d15c6ba29 | 92 | hash = MD5; |
Vanger | 0:b86d15c6ba29 | 93 | len = MD5_DIGEST_SIZE; |
Vanger | 0:b86d15c6ba29 | 94 | break; |
Vanger | 0:b86d15c6ba29 | 95 | #endif |
Vanger | 0:b86d15c6ba29 | 96 | |
Vanger | 0:b86d15c6ba29 | 97 | #ifndef NO_SHA256 |
Vanger | 0:b86d15c6ba29 | 98 | case sha256_mac: |
Vanger | 0:b86d15c6ba29 | 99 | hash = SHA256; |
Vanger | 0:b86d15c6ba29 | 100 | len = SHA256_DIGEST_SIZE; |
Vanger | 0:b86d15c6ba29 | 101 | break; |
Vanger | 0:b86d15c6ba29 | 102 | #endif |
Vanger | 0:b86d15c6ba29 | 103 | |
Vanger | 0:b86d15c6ba29 | 104 | #ifdef CYASSL_SHA384 |
Vanger | 0:b86d15c6ba29 | 105 | case sha384_mac: |
Vanger | 0:b86d15c6ba29 | 106 | hash = SHA384; |
Vanger | 0:b86d15c6ba29 | 107 | len = SHA384_DIGEST_SIZE; |
Vanger | 0:b86d15c6ba29 | 108 | break; |
Vanger | 0:b86d15c6ba29 | 109 | #endif |
Vanger | 0:b86d15c6ba29 | 110 | |
Vanger | 0:b86d15c6ba29 | 111 | #ifndef NO_SHA |
Vanger | 0:b86d15c6ba29 | 112 | case sha_mac: |
Vanger | 0:b86d15c6ba29 | 113 | default: |
Vanger | 0:b86d15c6ba29 | 114 | hash = SHA; |
Vanger | 0:b86d15c6ba29 | 115 | len = SHA_DIGEST_SIZE; |
Vanger | 0:b86d15c6ba29 | 116 | break; |
Vanger | 0:b86d15c6ba29 | 117 | #endif |
Vanger | 0:b86d15c6ba29 | 118 | } |
Vanger | 0:b86d15c6ba29 | 119 | |
Vanger | 0:b86d15c6ba29 | 120 | times = resLen / len; |
Vanger | 0:b86d15c6ba29 | 121 | lastLen = resLen % len; |
Vanger | 0:b86d15c6ba29 | 122 | |
Vanger | 0:b86d15c6ba29 | 123 | if (lastLen) |
Vanger | 0:b86d15c6ba29 | 124 | times += 1; |
Vanger | 0:b86d15c6ba29 | 125 | |
Vanger | 0:b86d15c6ba29 | 126 | lastTime = times - 1; |
Vanger | 0:b86d15c6ba29 | 127 | |
Vanger | 0:b86d15c6ba29 | 128 | if ((ret = HmacSetKey(hmac, hash, secret, secLen)) == 0) { |
Vanger | 0:b86d15c6ba29 | 129 | if ((ret = HmacUpdate(hmac, seed, seedLen)) == 0) { /* A0 = seed */ |
Vanger | 0:b86d15c6ba29 | 130 | if ((ret = HmacFinal(hmac, previous)) == 0) { /* A1 */ |
Vanger | 0:b86d15c6ba29 | 131 | for (i = 0; i < times; i++) { |
Vanger | 0:b86d15c6ba29 | 132 | ret = HmacUpdate(hmac, previous, len); |
Vanger | 0:b86d15c6ba29 | 133 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 134 | break; |
Vanger | 0:b86d15c6ba29 | 135 | ret = HmacUpdate(hmac, seed, seedLen); |
Vanger | 0:b86d15c6ba29 | 136 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 137 | break; |
Vanger | 0:b86d15c6ba29 | 138 | ret = HmacFinal(hmac, current); |
Vanger | 0:b86d15c6ba29 | 139 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 140 | break; |
Vanger | 0:b86d15c6ba29 | 141 | |
Vanger | 0:b86d15c6ba29 | 142 | if ((i == lastTime) && lastLen) |
Vanger | 0:b86d15c6ba29 | 143 | XMEMCPY(&result[idx], current, |
Vanger | 0:b86d15c6ba29 | 144 | min(lastLen, P_HASH_MAX_SIZE)); |
Vanger | 0:b86d15c6ba29 | 145 | else { |
Vanger | 0:b86d15c6ba29 | 146 | XMEMCPY(&result[idx], current, len); |
Vanger | 0:b86d15c6ba29 | 147 | idx += len; |
Vanger | 0:b86d15c6ba29 | 148 | ret = HmacUpdate(hmac, previous, len); |
Vanger | 0:b86d15c6ba29 | 149 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 150 | break; |
Vanger | 0:b86d15c6ba29 | 151 | ret = HmacFinal(hmac, previous); |
Vanger | 0:b86d15c6ba29 | 152 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 153 | break; |
Vanger | 0:b86d15c6ba29 | 154 | } |
Vanger | 0:b86d15c6ba29 | 155 | } |
Vanger | 0:b86d15c6ba29 | 156 | } |
Vanger | 0:b86d15c6ba29 | 157 | } |
Vanger | 0:b86d15c6ba29 | 158 | } |
Vanger | 0:b86d15c6ba29 | 159 | |
Vanger | 0:b86d15c6ba29 | 160 | XMEMSET(previous, 0, P_HASH_MAX_SIZE); |
Vanger | 0:b86d15c6ba29 | 161 | XMEMSET(current, 0, P_HASH_MAX_SIZE); |
Vanger | 0:b86d15c6ba29 | 162 | XMEMSET(hmac, 0, sizeof(Hmac)); |
Vanger | 0:b86d15c6ba29 | 163 | |
Vanger | 0:b86d15c6ba29 | 164 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 165 | XFREE(previous, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 166 | XFREE(current, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 167 | XFREE(hmac, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 168 | #endif |
Vanger | 0:b86d15c6ba29 | 169 | |
Vanger | 0:b86d15c6ba29 | 170 | return ret; |
Vanger | 0:b86d15c6ba29 | 171 | } |
Vanger | 0:b86d15c6ba29 | 172 | |
Vanger | 0:b86d15c6ba29 | 173 | #undef P_HASH_MAX_SIZE |
Vanger | 0:b86d15c6ba29 | 174 | |
Vanger | 0:b86d15c6ba29 | 175 | |
Vanger | 0:b86d15c6ba29 | 176 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 177 | |
Vanger | 0:b86d15c6ba29 | 178 | /* calculate XOR for TLSv1 PRF */ |
Vanger | 0:b86d15c6ba29 | 179 | static INLINE void get_xor(byte *digest, word32 digLen, byte* md5, byte* sha) |
Vanger | 0:b86d15c6ba29 | 180 | { |
Vanger | 0:b86d15c6ba29 | 181 | word32 i; |
Vanger | 0:b86d15c6ba29 | 182 | |
Vanger | 0:b86d15c6ba29 | 183 | for (i = 0; i < digLen; i++) |
Vanger | 0:b86d15c6ba29 | 184 | digest[i] = md5[i] ^ sha[i]; |
Vanger | 0:b86d15c6ba29 | 185 | } |
Vanger | 0:b86d15c6ba29 | 186 | |
Vanger | 0:b86d15c6ba29 | 187 | |
Vanger | 0:b86d15c6ba29 | 188 | /* compute TLSv1 PRF (pseudo random function using HMAC) */ |
Vanger | 0:b86d15c6ba29 | 189 | static int doPRF(byte* digest, word32 digLen, const byte* secret,word32 secLen, |
Vanger | 0:b86d15c6ba29 | 190 | const byte* label, word32 labLen, const byte* seed, |
Vanger | 0:b86d15c6ba29 | 191 | word32 seedLen) |
Vanger | 0:b86d15c6ba29 | 192 | { |
Vanger | 0:b86d15c6ba29 | 193 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 194 | word32 half = (secLen + 1) / 2; |
Vanger | 0:b86d15c6ba29 | 195 | |
Vanger | 0:b86d15c6ba29 | 196 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 197 | byte* md5_half; |
Vanger | 0:b86d15c6ba29 | 198 | byte* sha_half; |
Vanger | 0:b86d15c6ba29 | 199 | byte* labelSeed; |
Vanger | 0:b86d15c6ba29 | 200 | byte* md5_result; |
Vanger | 0:b86d15c6ba29 | 201 | byte* sha_result; |
Vanger | 0:b86d15c6ba29 | 202 | #else |
Vanger | 0:b86d15c6ba29 | 203 | byte md5_half[MAX_PRF_HALF]; /* half is real size */ |
Vanger | 0:b86d15c6ba29 | 204 | byte sha_half[MAX_PRF_HALF]; /* half is real size */ |
Vanger | 0:b86d15c6ba29 | 205 | byte labelSeed[MAX_PRF_LABSEED]; /* labLen + seedLen is real size */ |
Vanger | 0:b86d15c6ba29 | 206 | byte md5_result[MAX_PRF_DIG]; /* digLen is real size */ |
Vanger | 0:b86d15c6ba29 | 207 | byte sha_result[MAX_PRF_DIG]; /* digLen is real size */ |
Vanger | 0:b86d15c6ba29 | 208 | #endif |
Vanger | 0:b86d15c6ba29 | 209 | |
Vanger | 0:b86d15c6ba29 | 210 | if (half > MAX_PRF_HALF) |
Vanger | 0:b86d15c6ba29 | 211 | return BUFFER_E; |
Vanger | 0:b86d15c6ba29 | 212 | if (labLen + seedLen > MAX_PRF_LABSEED) |
Vanger | 0:b86d15c6ba29 | 213 | return BUFFER_E; |
Vanger | 0:b86d15c6ba29 | 214 | if (digLen > MAX_PRF_DIG) |
Vanger | 0:b86d15c6ba29 | 215 | return BUFFER_E; |
Vanger | 0:b86d15c6ba29 | 216 | |
Vanger | 0:b86d15c6ba29 | 217 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 218 | md5_half = (byte*)XMALLOC(MAX_PRF_HALF, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 219 | sha_half = (byte*)XMALLOC(MAX_PRF_HALF, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 220 | labelSeed = (byte*)XMALLOC(MAX_PRF_LABSEED, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 221 | md5_result = (byte*)XMALLOC(MAX_PRF_DIG, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 222 | sha_result = (byte*)XMALLOC(MAX_PRF_DIG, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 223 | |
Vanger | 0:b86d15c6ba29 | 224 | if (md5_half == NULL || sha_half == NULL || labelSeed == NULL || |
Vanger | 0:b86d15c6ba29 | 225 | md5_result == NULL || sha_result == NULL) { |
Vanger | 0:b86d15c6ba29 | 226 | if (md5_half) XFREE(md5_half, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 227 | if (sha_half) XFREE(sha_half, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 228 | if (labelSeed) XFREE(labelSeed, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 229 | if (md5_result) XFREE(md5_result, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 230 | if (sha_result) XFREE(sha_result, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 231 | |
Vanger | 0:b86d15c6ba29 | 232 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 233 | } |
Vanger | 0:b86d15c6ba29 | 234 | #endif |
Vanger | 0:b86d15c6ba29 | 235 | |
Vanger | 0:b86d15c6ba29 | 236 | XMEMSET(md5_result, 0, digLen); |
Vanger | 0:b86d15c6ba29 | 237 | XMEMSET(sha_result, 0, digLen); |
Vanger | 0:b86d15c6ba29 | 238 | |
Vanger | 0:b86d15c6ba29 | 239 | XMEMCPY(md5_half, secret, half); |
Vanger | 0:b86d15c6ba29 | 240 | XMEMCPY(sha_half, secret + half - secLen % 2, half); |
Vanger | 0:b86d15c6ba29 | 241 | |
Vanger | 0:b86d15c6ba29 | 242 | XMEMCPY(labelSeed, label, labLen); |
Vanger | 0:b86d15c6ba29 | 243 | XMEMCPY(labelSeed + labLen, seed, seedLen); |
Vanger | 0:b86d15c6ba29 | 244 | |
Vanger | 0:b86d15c6ba29 | 245 | if ((ret = p_hash(md5_result, digLen, md5_half, half, labelSeed, |
Vanger | 0:b86d15c6ba29 | 246 | labLen + seedLen, md5_mac)) == 0) { |
Vanger | 0:b86d15c6ba29 | 247 | if ((ret = p_hash(sha_result, digLen, sha_half, half, labelSeed, |
Vanger | 0:b86d15c6ba29 | 248 | labLen + seedLen, sha_mac)) == 0) { |
Vanger | 0:b86d15c6ba29 | 249 | get_xor(digest, digLen, md5_result, sha_result); |
Vanger | 0:b86d15c6ba29 | 250 | } |
Vanger | 0:b86d15c6ba29 | 251 | } |
Vanger | 0:b86d15c6ba29 | 252 | |
Vanger | 0:b86d15c6ba29 | 253 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 254 | XFREE(md5_half, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 255 | XFREE(sha_half, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 256 | XFREE(labelSeed, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 257 | XFREE(md5_result, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 258 | XFREE(sha_result, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 259 | #endif |
Vanger | 0:b86d15c6ba29 | 260 | |
Vanger | 0:b86d15c6ba29 | 261 | return ret; |
Vanger | 0:b86d15c6ba29 | 262 | } |
Vanger | 0:b86d15c6ba29 | 263 | |
Vanger | 0:b86d15c6ba29 | 264 | #endif |
Vanger | 0:b86d15c6ba29 | 265 | |
Vanger | 0:b86d15c6ba29 | 266 | |
Vanger | 0:b86d15c6ba29 | 267 | /* Wrapper to call straight thru to p_hash in TSL 1.2 cases to remove stack |
Vanger | 0:b86d15c6ba29 | 268 | use */ |
Vanger | 0:b86d15c6ba29 | 269 | static int PRF(byte* digest, word32 digLen, const byte* secret, word32 secLen, |
Vanger | 0:b86d15c6ba29 | 270 | const byte* label, word32 labLen, const byte* seed, word32 seedLen, |
Vanger | 0:b86d15c6ba29 | 271 | int useAtLeastSha256, int hash_type) |
Vanger | 0:b86d15c6ba29 | 272 | { |
Vanger | 0:b86d15c6ba29 | 273 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 274 | |
Vanger | 0:b86d15c6ba29 | 275 | if (useAtLeastSha256) { |
Vanger | 0:b86d15c6ba29 | 276 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 277 | byte* labelSeed; |
Vanger | 0:b86d15c6ba29 | 278 | #else |
Vanger | 0:b86d15c6ba29 | 279 | byte labelSeed[MAX_PRF_LABSEED]; /* labLen + seedLen is real size */ |
Vanger | 0:b86d15c6ba29 | 280 | #endif |
Vanger | 0:b86d15c6ba29 | 281 | |
Vanger | 0:b86d15c6ba29 | 282 | if (labLen + seedLen > MAX_PRF_LABSEED) |
Vanger | 0:b86d15c6ba29 | 283 | return BUFFER_E; |
Vanger | 0:b86d15c6ba29 | 284 | |
Vanger | 0:b86d15c6ba29 | 285 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 286 | labelSeed = (byte*)XMALLOC(MAX_PRF_LABSEED, NULL, |
Vanger | 0:b86d15c6ba29 | 287 | DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 288 | if (labelSeed == NULL) |
Vanger | 0:b86d15c6ba29 | 289 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 290 | #endif |
Vanger | 0:b86d15c6ba29 | 291 | |
Vanger | 0:b86d15c6ba29 | 292 | XMEMCPY(labelSeed, label, labLen); |
Vanger | 0:b86d15c6ba29 | 293 | XMEMCPY(labelSeed + labLen, seed, seedLen); |
Vanger | 0:b86d15c6ba29 | 294 | |
Vanger | 0:b86d15c6ba29 | 295 | /* If a cipher suite wants an algorithm better than sha256, it |
Vanger | 0:b86d15c6ba29 | 296 | * should use better. */ |
Vanger | 0:b86d15c6ba29 | 297 | if (hash_type < sha256_mac) |
Vanger | 0:b86d15c6ba29 | 298 | hash_type = sha256_mac; |
Vanger | 0:b86d15c6ba29 | 299 | ret = p_hash(digest, digLen, secret, secLen, labelSeed, |
Vanger | 0:b86d15c6ba29 | 300 | labLen + seedLen, hash_type); |
Vanger | 0:b86d15c6ba29 | 301 | |
Vanger | 0:b86d15c6ba29 | 302 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 303 | XFREE(labelSeed, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 304 | #endif |
Vanger | 0:b86d15c6ba29 | 305 | } |
Vanger | 0:b86d15c6ba29 | 306 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 307 | else { |
Vanger | 0:b86d15c6ba29 | 308 | ret = doPRF(digest, digLen, secret, secLen, label, labLen, seed, |
Vanger | 0:b86d15c6ba29 | 309 | seedLen); |
Vanger | 0:b86d15c6ba29 | 310 | } |
Vanger | 0:b86d15c6ba29 | 311 | #endif |
Vanger | 0:b86d15c6ba29 | 312 | |
Vanger | 0:b86d15c6ba29 | 313 | return ret; |
Vanger | 0:b86d15c6ba29 | 314 | } |
Vanger | 0:b86d15c6ba29 | 315 | |
Vanger | 0:b86d15c6ba29 | 316 | |
Vanger | 0:b86d15c6ba29 | 317 | #ifdef CYASSL_SHA384 |
Vanger | 0:b86d15c6ba29 | 318 | #define HSHASH_SZ SHA384_DIGEST_SIZE |
Vanger | 0:b86d15c6ba29 | 319 | #else |
Vanger | 0:b86d15c6ba29 | 320 | #define HSHASH_SZ FINISHED_SZ |
Vanger | 0:b86d15c6ba29 | 321 | #endif |
Vanger | 0:b86d15c6ba29 | 322 | |
Vanger | 0:b86d15c6ba29 | 323 | |
Vanger | 0:b86d15c6ba29 | 324 | int BuildTlsFinished(CYASSL* ssl, Hashes* hashes, const byte* sender) |
Vanger | 0:b86d15c6ba29 | 325 | { |
Vanger | 0:b86d15c6ba29 | 326 | const byte* side; |
Vanger | 0:b86d15c6ba29 | 327 | byte handshake_hash[HSHASH_SZ]; |
Vanger | 0:b86d15c6ba29 | 328 | word32 hashSz = FINISHED_SZ; |
Vanger | 0:b86d15c6ba29 | 329 | |
Vanger | 0:b86d15c6ba29 | 330 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 331 | Md5Final(&ssl->hashMd5, handshake_hash); |
Vanger | 0:b86d15c6ba29 | 332 | ShaFinal(&ssl->hashSha, &handshake_hash[MD5_DIGEST_SIZE]); |
Vanger | 0:b86d15c6ba29 | 333 | #endif |
Vanger | 0:b86d15c6ba29 | 334 | |
Vanger | 0:b86d15c6ba29 | 335 | if (IsAtLeastTLSv1_2(ssl)) { |
Vanger | 0:b86d15c6ba29 | 336 | #ifndef NO_SHA256 |
Vanger | 0:b86d15c6ba29 | 337 | if (ssl->specs.mac_algorithm <= sha256_mac) { |
Vanger | 0:b86d15c6ba29 | 338 | int ret = Sha256Final(&ssl->hashSha256, handshake_hash); |
Vanger | 0:b86d15c6ba29 | 339 | |
Vanger | 0:b86d15c6ba29 | 340 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 341 | return ret; |
Vanger | 0:b86d15c6ba29 | 342 | |
Vanger | 0:b86d15c6ba29 | 343 | hashSz = SHA256_DIGEST_SIZE; |
Vanger | 0:b86d15c6ba29 | 344 | } |
Vanger | 0:b86d15c6ba29 | 345 | #endif |
Vanger | 0:b86d15c6ba29 | 346 | #ifdef CYASSL_SHA384 |
Vanger | 0:b86d15c6ba29 | 347 | if (ssl->specs.mac_algorithm == sha384_mac) { |
Vanger | 0:b86d15c6ba29 | 348 | int ret = Sha384Final(&ssl->hashSha384, handshake_hash); |
Vanger | 0:b86d15c6ba29 | 349 | |
Vanger | 0:b86d15c6ba29 | 350 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 351 | return ret; |
Vanger | 0:b86d15c6ba29 | 352 | |
Vanger | 0:b86d15c6ba29 | 353 | hashSz = SHA384_DIGEST_SIZE; |
Vanger | 0:b86d15c6ba29 | 354 | } |
Vanger | 0:b86d15c6ba29 | 355 | #endif |
Vanger | 0:b86d15c6ba29 | 356 | } |
Vanger | 0:b86d15c6ba29 | 357 | |
Vanger | 0:b86d15c6ba29 | 358 | if ( XSTRNCMP((const char*)sender, (const char*)client, SIZEOF_SENDER) == 0) |
Vanger | 0:b86d15c6ba29 | 359 | side = tls_client; |
Vanger | 0:b86d15c6ba29 | 360 | else |
Vanger | 0:b86d15c6ba29 | 361 | side = tls_server; |
Vanger | 0:b86d15c6ba29 | 362 | |
Vanger | 0:b86d15c6ba29 | 363 | return PRF((byte*)hashes, TLS_FINISHED_SZ, ssl->arrays->masterSecret, |
Vanger | 0:b86d15c6ba29 | 364 | SECRET_LEN, side, FINISHED_LABEL_SZ, handshake_hash, hashSz, |
Vanger | 0:b86d15c6ba29 | 365 | IsAtLeastTLSv1_2(ssl), ssl->specs.mac_algorithm); |
Vanger | 0:b86d15c6ba29 | 366 | } |
Vanger | 0:b86d15c6ba29 | 367 | |
Vanger | 0:b86d15c6ba29 | 368 | |
Vanger | 0:b86d15c6ba29 | 369 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 370 | |
Vanger | 0:b86d15c6ba29 | 371 | ProtocolVersion MakeTLSv1(void) |
Vanger | 0:b86d15c6ba29 | 372 | { |
Vanger | 0:b86d15c6ba29 | 373 | ProtocolVersion pv; |
Vanger | 0:b86d15c6ba29 | 374 | pv.major = SSLv3_MAJOR; |
Vanger | 0:b86d15c6ba29 | 375 | pv.minor = TLSv1_MINOR; |
Vanger | 0:b86d15c6ba29 | 376 | |
Vanger | 0:b86d15c6ba29 | 377 | return pv; |
Vanger | 0:b86d15c6ba29 | 378 | } |
Vanger | 0:b86d15c6ba29 | 379 | |
Vanger | 0:b86d15c6ba29 | 380 | |
Vanger | 0:b86d15c6ba29 | 381 | ProtocolVersion MakeTLSv1_1(void) |
Vanger | 0:b86d15c6ba29 | 382 | { |
Vanger | 0:b86d15c6ba29 | 383 | ProtocolVersion pv; |
Vanger | 0:b86d15c6ba29 | 384 | pv.major = SSLv3_MAJOR; |
Vanger | 0:b86d15c6ba29 | 385 | pv.minor = TLSv1_1_MINOR; |
Vanger | 0:b86d15c6ba29 | 386 | |
Vanger | 0:b86d15c6ba29 | 387 | return pv; |
Vanger | 0:b86d15c6ba29 | 388 | } |
Vanger | 0:b86d15c6ba29 | 389 | |
Vanger | 0:b86d15c6ba29 | 390 | #endif |
Vanger | 0:b86d15c6ba29 | 391 | |
Vanger | 0:b86d15c6ba29 | 392 | |
Vanger | 0:b86d15c6ba29 | 393 | ProtocolVersion MakeTLSv1_2(void) |
Vanger | 0:b86d15c6ba29 | 394 | { |
Vanger | 0:b86d15c6ba29 | 395 | ProtocolVersion pv; |
Vanger | 0:b86d15c6ba29 | 396 | pv.major = SSLv3_MAJOR; |
Vanger | 0:b86d15c6ba29 | 397 | pv.minor = TLSv1_2_MINOR; |
Vanger | 0:b86d15c6ba29 | 398 | |
Vanger | 0:b86d15c6ba29 | 399 | return pv; |
Vanger | 0:b86d15c6ba29 | 400 | } |
Vanger | 0:b86d15c6ba29 | 401 | |
Vanger | 0:b86d15c6ba29 | 402 | |
Vanger | 0:b86d15c6ba29 | 403 | static const byte master_label[MASTER_LABEL_SZ + 1] = "master secret"; |
Vanger | 0:b86d15c6ba29 | 404 | static const byte key_label [KEY_LABEL_SZ + 1] = "key expansion"; |
Vanger | 0:b86d15c6ba29 | 405 | |
Vanger | 0:b86d15c6ba29 | 406 | |
Vanger | 0:b86d15c6ba29 | 407 | /* External facing wrapper so user can call as well, 0 on success */ |
Vanger | 0:b86d15c6ba29 | 408 | int CyaSSL_DeriveTlsKeys(byte* key_data, word32 keyLen, |
Vanger | 0:b86d15c6ba29 | 409 | const byte* ms, word32 msLen, |
Vanger | 0:b86d15c6ba29 | 410 | const byte* sr, const byte* cr, |
Vanger | 0:b86d15c6ba29 | 411 | int tls1_2, int hash_type) |
Vanger | 0:b86d15c6ba29 | 412 | { |
Vanger | 0:b86d15c6ba29 | 413 | byte seed[SEED_LEN]; |
Vanger | 0:b86d15c6ba29 | 414 | |
Vanger | 0:b86d15c6ba29 | 415 | XMEMCPY(seed, sr, RAN_LEN); |
Vanger | 0:b86d15c6ba29 | 416 | XMEMCPY(seed + RAN_LEN, cr, RAN_LEN); |
Vanger | 0:b86d15c6ba29 | 417 | |
Vanger | 0:b86d15c6ba29 | 418 | return PRF(key_data, keyLen, ms, msLen, key_label, KEY_LABEL_SZ, |
Vanger | 0:b86d15c6ba29 | 419 | seed, SEED_LEN, tls1_2, hash_type); |
Vanger | 0:b86d15c6ba29 | 420 | } |
Vanger | 0:b86d15c6ba29 | 421 | |
Vanger | 0:b86d15c6ba29 | 422 | |
Vanger | 0:b86d15c6ba29 | 423 | int DeriveTlsKeys(CYASSL* ssl) |
Vanger | 0:b86d15c6ba29 | 424 | { |
Vanger | 0:b86d15c6ba29 | 425 | int ret; |
Vanger | 0:b86d15c6ba29 | 426 | int length = 2 * ssl->specs.hash_size + |
Vanger | 0:b86d15c6ba29 | 427 | 2 * ssl->specs.key_size + |
Vanger | 0:b86d15c6ba29 | 428 | 2 * ssl->specs.iv_size; |
Vanger | 0:b86d15c6ba29 | 429 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 430 | byte* key_data; |
Vanger | 0:b86d15c6ba29 | 431 | #else |
Vanger | 0:b86d15c6ba29 | 432 | byte key_data[MAX_PRF_DIG]; |
Vanger | 0:b86d15c6ba29 | 433 | #endif |
Vanger | 0:b86d15c6ba29 | 434 | |
Vanger | 0:b86d15c6ba29 | 435 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 436 | key_data = (byte*)XMALLOC(MAX_PRF_DIG, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 437 | if (key_data == NULL) { |
Vanger | 0:b86d15c6ba29 | 438 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 439 | } |
Vanger | 0:b86d15c6ba29 | 440 | #endif |
Vanger | 0:b86d15c6ba29 | 441 | |
Vanger | 0:b86d15c6ba29 | 442 | ret = CyaSSL_DeriveTlsKeys(key_data, length, |
Vanger | 0:b86d15c6ba29 | 443 | ssl->arrays->masterSecret, SECRET_LEN, |
Vanger | 0:b86d15c6ba29 | 444 | ssl->arrays->serverRandom, ssl->arrays->clientRandom, |
Vanger | 0:b86d15c6ba29 | 445 | IsAtLeastTLSv1_2(ssl), ssl->specs.mac_algorithm); |
Vanger | 0:b86d15c6ba29 | 446 | if (ret == 0) |
Vanger | 0:b86d15c6ba29 | 447 | ret = StoreKeys(ssl, key_data); |
Vanger | 0:b86d15c6ba29 | 448 | |
Vanger | 0:b86d15c6ba29 | 449 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 450 | XFREE(key_data, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 451 | #endif |
Vanger | 0:b86d15c6ba29 | 452 | |
Vanger | 0:b86d15c6ba29 | 453 | return ret; |
Vanger | 0:b86d15c6ba29 | 454 | } |
Vanger | 0:b86d15c6ba29 | 455 | |
Vanger | 0:b86d15c6ba29 | 456 | |
Vanger | 0:b86d15c6ba29 | 457 | /* External facing wrapper so user can call as well, 0 on success */ |
Vanger | 0:b86d15c6ba29 | 458 | int CyaSSL_MakeTlsMasterSecret(byte* ms, word32 msLen, |
Vanger | 0:b86d15c6ba29 | 459 | const byte* pms, word32 pmsLen, |
Vanger | 0:b86d15c6ba29 | 460 | const byte* cr, const byte* sr, |
Vanger | 0:b86d15c6ba29 | 461 | int tls1_2, int hash_type) |
Vanger | 0:b86d15c6ba29 | 462 | { |
Vanger | 0:b86d15c6ba29 | 463 | byte seed[SEED_LEN]; |
Vanger | 0:b86d15c6ba29 | 464 | |
Vanger | 0:b86d15c6ba29 | 465 | XMEMCPY(seed, cr, RAN_LEN); |
Vanger | 0:b86d15c6ba29 | 466 | XMEMCPY(seed + RAN_LEN, sr, RAN_LEN); |
Vanger | 0:b86d15c6ba29 | 467 | |
Vanger | 0:b86d15c6ba29 | 468 | return PRF(ms, msLen, pms, pmsLen, master_label, MASTER_LABEL_SZ, |
Vanger | 0:b86d15c6ba29 | 469 | seed, SEED_LEN, tls1_2, hash_type); |
Vanger | 0:b86d15c6ba29 | 470 | } |
Vanger | 0:b86d15c6ba29 | 471 | |
Vanger | 0:b86d15c6ba29 | 472 | |
Vanger | 0:b86d15c6ba29 | 473 | int MakeTlsMasterSecret(CYASSL* ssl) |
Vanger | 0:b86d15c6ba29 | 474 | { |
Vanger | 0:b86d15c6ba29 | 475 | int ret; |
Vanger | 0:b86d15c6ba29 | 476 | |
Vanger | 0:b86d15c6ba29 | 477 | ret = CyaSSL_MakeTlsMasterSecret(ssl->arrays->masterSecret, SECRET_LEN, |
Vanger | 0:b86d15c6ba29 | 478 | ssl->arrays->preMasterSecret, ssl->arrays->preMasterSz, |
Vanger | 0:b86d15c6ba29 | 479 | ssl->arrays->clientRandom, ssl->arrays->serverRandom, |
Vanger | 0:b86d15c6ba29 | 480 | IsAtLeastTLSv1_2(ssl), ssl->specs.mac_algorithm); |
Vanger | 0:b86d15c6ba29 | 481 | |
Vanger | 0:b86d15c6ba29 | 482 | if (ret == 0) { |
Vanger | 0:b86d15c6ba29 | 483 | #ifdef SHOW_SECRETS |
Vanger | 0:b86d15c6ba29 | 484 | int i; |
Vanger | 0:b86d15c6ba29 | 485 | |
Vanger | 0:b86d15c6ba29 | 486 | printf("master secret: "); |
Vanger | 0:b86d15c6ba29 | 487 | for (i = 0; i < SECRET_LEN; i++) |
Vanger | 0:b86d15c6ba29 | 488 | printf("%02x", ssl->arrays->masterSecret[i]); |
Vanger | 0:b86d15c6ba29 | 489 | printf("\n"); |
Vanger | 0:b86d15c6ba29 | 490 | #endif |
Vanger | 0:b86d15c6ba29 | 491 | |
Vanger | 0:b86d15c6ba29 | 492 | ret = DeriveTlsKeys(ssl); |
Vanger | 0:b86d15c6ba29 | 493 | } |
Vanger | 0:b86d15c6ba29 | 494 | |
Vanger | 0:b86d15c6ba29 | 495 | return ret; |
Vanger | 0:b86d15c6ba29 | 496 | } |
Vanger | 0:b86d15c6ba29 | 497 | |
Vanger | 0:b86d15c6ba29 | 498 | |
Vanger | 0:b86d15c6ba29 | 499 | /* Used by EAP-TLS and EAP-TTLS to derive keying material from |
Vanger | 0:b86d15c6ba29 | 500 | * the master_secret. */ |
Vanger | 0:b86d15c6ba29 | 501 | int CyaSSL_make_eap_keys(CYASSL* ssl, void* msk, unsigned int len, |
Vanger | 0:b86d15c6ba29 | 502 | const char* label) |
Vanger | 0:b86d15c6ba29 | 503 | { |
Vanger | 0:b86d15c6ba29 | 504 | int ret; |
Vanger | 0:b86d15c6ba29 | 505 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 506 | byte* seed; |
Vanger | 0:b86d15c6ba29 | 507 | #else |
Vanger | 0:b86d15c6ba29 | 508 | byte seed[SEED_LEN]; |
Vanger | 0:b86d15c6ba29 | 509 | #endif |
Vanger | 0:b86d15c6ba29 | 510 | |
Vanger | 0:b86d15c6ba29 | 511 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 512 | seed = (byte*)XMALLOC(SEED_LEN, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 513 | if (seed == NULL) |
Vanger | 0:b86d15c6ba29 | 514 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 515 | #endif |
Vanger | 0:b86d15c6ba29 | 516 | |
Vanger | 0:b86d15c6ba29 | 517 | /* |
Vanger | 0:b86d15c6ba29 | 518 | * As per RFC-5281, the order of the client and server randoms is reversed |
Vanger | 0:b86d15c6ba29 | 519 | * from that used by the TLS protocol to derive keys. |
Vanger | 0:b86d15c6ba29 | 520 | */ |
Vanger | 0:b86d15c6ba29 | 521 | XMEMCPY(seed, ssl->arrays->clientRandom, RAN_LEN); |
Vanger | 0:b86d15c6ba29 | 522 | XMEMCPY(seed + RAN_LEN, ssl->arrays->serverRandom, RAN_LEN); |
Vanger | 0:b86d15c6ba29 | 523 | |
Vanger | 0:b86d15c6ba29 | 524 | ret = PRF((byte*)msk, len, ssl->arrays->masterSecret, SECRET_LEN, |
Vanger | 0:b86d15c6ba29 | 525 | (const byte *)label, (word32)strlen(label), seed, SEED_LEN, |
Vanger | 0:b86d15c6ba29 | 526 | IsAtLeastTLSv1_2(ssl), ssl->specs.mac_algorithm); |
Vanger | 0:b86d15c6ba29 | 527 | |
Vanger | 0:b86d15c6ba29 | 528 | #ifdef CYASSL_SMALL_STACK |
Vanger | 0:b86d15c6ba29 | 529 | XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER); |
Vanger | 0:b86d15c6ba29 | 530 | #endif |
Vanger | 0:b86d15c6ba29 | 531 | |
Vanger | 0:b86d15c6ba29 | 532 | return ret; |
Vanger | 0:b86d15c6ba29 | 533 | } |
Vanger | 0:b86d15c6ba29 | 534 | |
Vanger | 0:b86d15c6ba29 | 535 | |
Vanger | 0:b86d15c6ba29 | 536 | /*** next for static INLINE s copied internal.c ***/ |
Vanger | 0:b86d15c6ba29 | 537 | |
Vanger | 0:b86d15c6ba29 | 538 | /* convert 16 bit integer to opaque */ |
Vanger | 0:b86d15c6ba29 | 539 | static INLINE void c16toa(word16 u16, byte* c) |
Vanger | 0:b86d15c6ba29 | 540 | { |
Vanger | 0:b86d15c6ba29 | 541 | c[0] = (u16 >> 8) & 0xff; |
Vanger | 0:b86d15c6ba29 | 542 | c[1] = u16 & 0xff; |
Vanger | 0:b86d15c6ba29 | 543 | } |
Vanger | 0:b86d15c6ba29 | 544 | |
Vanger | 0:b86d15c6ba29 | 545 | #ifdef HAVE_TLS_EXTENSIONS |
Vanger | 0:b86d15c6ba29 | 546 | /* convert opaque to 16 bit integer */ |
Vanger | 0:b86d15c6ba29 | 547 | static INLINE void ato16(const byte* c, word16* u16) |
Vanger | 0:b86d15c6ba29 | 548 | { |
Vanger | 0:b86d15c6ba29 | 549 | *u16 = (c[0] << 8) | (c[1]); |
Vanger | 0:b86d15c6ba29 | 550 | } |
Vanger | 0:b86d15c6ba29 | 551 | |
Vanger | 0:b86d15c6ba29 | 552 | #ifdef HAVE_SNI |
Vanger | 0:b86d15c6ba29 | 553 | /* convert a 24 bit integer into a 32 bit one */ |
Vanger | 0:b86d15c6ba29 | 554 | static INLINE void c24to32(const word24 u24, word32* u32) |
Vanger | 0:b86d15c6ba29 | 555 | { |
Vanger | 0:b86d15c6ba29 | 556 | *u32 = (u24[0] << 16) | (u24[1] << 8) | u24[2]; |
Vanger | 0:b86d15c6ba29 | 557 | } |
Vanger | 0:b86d15c6ba29 | 558 | #endif |
Vanger | 0:b86d15c6ba29 | 559 | #endif |
Vanger | 0:b86d15c6ba29 | 560 | |
Vanger | 0:b86d15c6ba29 | 561 | /* convert 32 bit integer to opaque */ |
Vanger | 0:b86d15c6ba29 | 562 | static INLINE void c32toa(word32 u32, byte* c) |
Vanger | 0:b86d15c6ba29 | 563 | { |
Vanger | 0:b86d15c6ba29 | 564 | c[0] = (u32 >> 24) & 0xff; |
Vanger | 0:b86d15c6ba29 | 565 | c[1] = (u32 >> 16) & 0xff; |
Vanger | 0:b86d15c6ba29 | 566 | c[2] = (u32 >> 8) & 0xff; |
Vanger | 0:b86d15c6ba29 | 567 | c[3] = u32 & 0xff; |
Vanger | 0:b86d15c6ba29 | 568 | } |
Vanger | 0:b86d15c6ba29 | 569 | |
Vanger | 0:b86d15c6ba29 | 570 | |
Vanger | 0:b86d15c6ba29 | 571 | static INLINE word32 GetSEQIncrement(CYASSL* ssl, int verify) |
Vanger | 0:b86d15c6ba29 | 572 | { |
Vanger | 0:b86d15c6ba29 | 573 | #ifdef CYASSL_DTLS |
Vanger | 0:b86d15c6ba29 | 574 | if (ssl->options.dtls) { |
Vanger | 0:b86d15c6ba29 | 575 | if (verify) |
Vanger | 0:b86d15c6ba29 | 576 | return ssl->keys.dtls_state.curSeq; /* explicit from peer */ |
Vanger | 0:b86d15c6ba29 | 577 | else |
Vanger | 0:b86d15c6ba29 | 578 | return ssl->keys.dtls_sequence_number - 1; /* already incremented */ |
Vanger | 0:b86d15c6ba29 | 579 | } |
Vanger | 0:b86d15c6ba29 | 580 | #endif |
Vanger | 0:b86d15c6ba29 | 581 | if (verify) |
Vanger | 0:b86d15c6ba29 | 582 | return ssl->keys.peer_sequence_number++; |
Vanger | 0:b86d15c6ba29 | 583 | else |
Vanger | 0:b86d15c6ba29 | 584 | return ssl->keys.sequence_number++; |
Vanger | 0:b86d15c6ba29 | 585 | } |
Vanger | 0:b86d15c6ba29 | 586 | |
Vanger | 0:b86d15c6ba29 | 587 | |
Vanger | 0:b86d15c6ba29 | 588 | #ifdef CYASSL_DTLS |
Vanger | 0:b86d15c6ba29 | 589 | |
Vanger | 0:b86d15c6ba29 | 590 | static INLINE word32 GetEpoch(CYASSL* ssl, int verify) |
Vanger | 0:b86d15c6ba29 | 591 | { |
Vanger | 0:b86d15c6ba29 | 592 | if (verify) |
Vanger | 0:b86d15c6ba29 | 593 | return ssl->keys.dtls_state.curEpoch; |
Vanger | 0:b86d15c6ba29 | 594 | else |
Vanger | 0:b86d15c6ba29 | 595 | return ssl->keys.dtls_epoch; |
Vanger | 0:b86d15c6ba29 | 596 | } |
Vanger | 0:b86d15c6ba29 | 597 | |
Vanger | 0:b86d15c6ba29 | 598 | #endif /* CYASSL_DTLS */ |
Vanger | 0:b86d15c6ba29 | 599 | |
Vanger | 0:b86d15c6ba29 | 600 | |
Vanger | 0:b86d15c6ba29 | 601 | /*** end copy ***/ |
Vanger | 0:b86d15c6ba29 | 602 | |
Vanger | 0:b86d15c6ba29 | 603 | |
Vanger | 0:b86d15c6ba29 | 604 | /* return HMAC digest type in CyaSSL format */ |
Vanger | 0:b86d15c6ba29 | 605 | int CyaSSL_GetHmacType(CYASSL* ssl) |
Vanger | 0:b86d15c6ba29 | 606 | { |
Vanger | 0:b86d15c6ba29 | 607 | if (ssl == NULL) |
Vanger | 0:b86d15c6ba29 | 608 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 609 | |
Vanger | 0:b86d15c6ba29 | 610 | switch (ssl->specs.mac_algorithm) { |
Vanger | 0:b86d15c6ba29 | 611 | #ifndef NO_MD5 |
Vanger | 0:b86d15c6ba29 | 612 | case md5_mac: |
Vanger | 0:b86d15c6ba29 | 613 | { |
Vanger | 0:b86d15c6ba29 | 614 | return MD5; |
Vanger | 0:b86d15c6ba29 | 615 | } |
Vanger | 0:b86d15c6ba29 | 616 | #endif |
Vanger | 0:b86d15c6ba29 | 617 | #ifndef NO_SHA256 |
Vanger | 0:b86d15c6ba29 | 618 | case sha256_mac: |
Vanger | 0:b86d15c6ba29 | 619 | { |
Vanger | 0:b86d15c6ba29 | 620 | return SHA256; |
Vanger | 0:b86d15c6ba29 | 621 | } |
Vanger | 0:b86d15c6ba29 | 622 | #endif |
Vanger | 0:b86d15c6ba29 | 623 | #ifdef CYASSL_SHA384 |
Vanger | 0:b86d15c6ba29 | 624 | case sha384_mac: |
Vanger | 0:b86d15c6ba29 | 625 | { |
Vanger | 0:b86d15c6ba29 | 626 | return SHA384; |
Vanger | 0:b86d15c6ba29 | 627 | } |
Vanger | 0:b86d15c6ba29 | 628 | |
Vanger | 0:b86d15c6ba29 | 629 | #endif |
Vanger | 0:b86d15c6ba29 | 630 | #ifndef NO_SHA |
Vanger | 0:b86d15c6ba29 | 631 | case sha_mac: |
Vanger | 0:b86d15c6ba29 | 632 | { |
Vanger | 0:b86d15c6ba29 | 633 | return SHA; |
Vanger | 0:b86d15c6ba29 | 634 | } |
Vanger | 0:b86d15c6ba29 | 635 | #endif |
Vanger | 0:b86d15c6ba29 | 636 | #ifdef HAVE_BLAKE2 |
Vanger | 0:b86d15c6ba29 | 637 | case blake2b_mac: |
Vanger | 0:b86d15c6ba29 | 638 | { |
Vanger | 0:b86d15c6ba29 | 639 | return BLAKE2B_ID; |
Vanger | 0:b86d15c6ba29 | 640 | } |
Vanger | 0:b86d15c6ba29 | 641 | #endif |
Vanger | 0:b86d15c6ba29 | 642 | default: |
Vanger | 0:b86d15c6ba29 | 643 | { |
Vanger | 0:b86d15c6ba29 | 644 | return SSL_FATAL_ERROR; |
Vanger | 0:b86d15c6ba29 | 645 | } |
Vanger | 0:b86d15c6ba29 | 646 | } |
Vanger | 0:b86d15c6ba29 | 647 | } |
Vanger | 0:b86d15c6ba29 | 648 | |
Vanger | 0:b86d15c6ba29 | 649 | |
Vanger | 0:b86d15c6ba29 | 650 | int CyaSSL_SetTlsHmacInner(CYASSL* ssl, byte* inner, word32 sz, int content, |
Vanger | 0:b86d15c6ba29 | 651 | int verify) |
Vanger | 0:b86d15c6ba29 | 652 | { |
Vanger | 0:b86d15c6ba29 | 653 | if (ssl == NULL || inner == NULL) |
Vanger | 0:b86d15c6ba29 | 654 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 655 | |
Vanger | 0:b86d15c6ba29 | 656 | XMEMSET(inner, 0, CYASSL_TLS_HMAC_INNER_SZ); |
Vanger | 0:b86d15c6ba29 | 657 | |
Vanger | 0:b86d15c6ba29 | 658 | #ifdef CYASSL_DTLS |
Vanger | 0:b86d15c6ba29 | 659 | if (ssl->options.dtls) |
Vanger | 0:b86d15c6ba29 | 660 | c16toa((word16)GetEpoch(ssl, verify), inner); |
Vanger | 0:b86d15c6ba29 | 661 | #endif |
Vanger | 0:b86d15c6ba29 | 662 | c32toa(GetSEQIncrement(ssl, verify), &inner[sizeof(word32)]); |
Vanger | 0:b86d15c6ba29 | 663 | inner[SEQ_SZ] = (byte)content; |
Vanger | 0:b86d15c6ba29 | 664 | inner[SEQ_SZ + ENUM_LEN] = ssl->version.major; |
Vanger | 0:b86d15c6ba29 | 665 | inner[SEQ_SZ + ENUM_LEN + ENUM_LEN] = ssl->version.minor; |
Vanger | 0:b86d15c6ba29 | 666 | c16toa((word16)sz, inner + SEQ_SZ + ENUM_LEN + VERSION_SZ); |
Vanger | 0:b86d15c6ba29 | 667 | |
Vanger | 0:b86d15c6ba29 | 668 | return 0; |
Vanger | 0:b86d15c6ba29 | 669 | } |
Vanger | 0:b86d15c6ba29 | 670 | |
Vanger | 0:b86d15c6ba29 | 671 | |
Vanger | 0:b86d15c6ba29 | 672 | /* TLS type HMAC */ |
Vanger | 0:b86d15c6ba29 | 673 | int TLS_hmac(CYASSL* ssl, byte* digest, const byte* in, word32 sz, |
Vanger | 0:b86d15c6ba29 | 674 | int content, int verify) |
Vanger | 0:b86d15c6ba29 | 675 | { |
Vanger | 0:b86d15c6ba29 | 676 | Hmac hmac; |
Vanger | 0:b86d15c6ba29 | 677 | int ret; |
Vanger | 0:b86d15c6ba29 | 678 | byte myInner[CYASSL_TLS_HMAC_INNER_SZ]; |
Vanger | 0:b86d15c6ba29 | 679 | |
Vanger | 0:b86d15c6ba29 | 680 | if (ssl == NULL) |
Vanger | 0:b86d15c6ba29 | 681 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 682 | |
Vanger | 0:b86d15c6ba29 | 683 | #ifdef HAVE_FUZZER |
Vanger | 0:b86d15c6ba29 | 684 | if (ssl->fuzzerCb) |
Vanger | 0:b86d15c6ba29 | 685 | ssl->fuzzerCb(ssl, in, sz, FUZZ_HMAC, ssl->fuzzerCtx); |
Vanger | 0:b86d15c6ba29 | 686 | #endif |
Vanger | 0:b86d15c6ba29 | 687 | |
Vanger | 0:b86d15c6ba29 | 688 | CyaSSL_SetTlsHmacInner(ssl, myInner, sz, content, verify); |
Vanger | 0:b86d15c6ba29 | 689 | |
Vanger | 0:b86d15c6ba29 | 690 | ret = HmacSetKey(&hmac, CyaSSL_GetHmacType(ssl), |
Vanger | 0:b86d15c6ba29 | 691 | CyaSSL_GetMacSecret(ssl, verify), ssl->specs.hash_size); |
Vanger | 0:b86d15c6ba29 | 692 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 693 | return ret; |
Vanger | 0:b86d15c6ba29 | 694 | ret = HmacUpdate(&hmac, myInner, sizeof(myInner)); |
Vanger | 0:b86d15c6ba29 | 695 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 696 | return ret; |
Vanger | 0:b86d15c6ba29 | 697 | ret = HmacUpdate(&hmac, in, sz); /* content */ |
Vanger | 0:b86d15c6ba29 | 698 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 699 | return ret; |
Vanger | 0:b86d15c6ba29 | 700 | ret = HmacFinal(&hmac, digest); |
Vanger | 0:b86d15c6ba29 | 701 | if (ret != 0) |
Vanger | 0:b86d15c6ba29 | 702 | return ret; |
Vanger | 0:b86d15c6ba29 | 703 | |
Vanger | 0:b86d15c6ba29 | 704 | return 0; |
Vanger | 0:b86d15c6ba29 | 705 | } |
Vanger | 0:b86d15c6ba29 | 706 | |
Vanger | 0:b86d15c6ba29 | 707 | #ifdef HAVE_TLS_EXTENSIONS |
Vanger | 0:b86d15c6ba29 | 708 | |
Vanger | 0:b86d15c6ba29 | 709 | |
Vanger | 0:b86d15c6ba29 | 710 | /** Supports up to 64 flags. Update as needed. */ |
Vanger | 0:b86d15c6ba29 | 711 | #define SEMAPHORE_SIZE 8 |
Vanger | 0:b86d15c6ba29 | 712 | |
Vanger | 0:b86d15c6ba29 | 713 | |
Vanger | 0:b86d15c6ba29 | 714 | static INLINE word16 TLSX_ToSemaphore(word16 type) |
Vanger | 0:b86d15c6ba29 | 715 | { |
Vanger | 0:b86d15c6ba29 | 716 | switch (type) { |
Vanger | 0:b86d15c6ba29 | 717 | case SECURE_RENEGOTIATION: |
Vanger | 0:b86d15c6ba29 | 718 | return 63; |
Vanger | 0:b86d15c6ba29 | 719 | |
Vanger | 0:b86d15c6ba29 | 720 | default: |
Vanger | 0:b86d15c6ba29 | 721 | if (type > 62) { |
Vanger | 0:b86d15c6ba29 | 722 | /* This message SHOULD only happens during the adding of |
Vanger | 0:b86d15c6ba29 | 723 | new TLS extensions in which its IANA number overflows |
Vanger | 0:b86d15c6ba29 | 724 | the current semaphore's range, or if its number already |
Vanger | 0:b86d15c6ba29 | 725 | is assigned to be used by another extension. |
Vanger | 0:b86d15c6ba29 | 726 | Use this check value for the new extension and decrement |
Vanger | 0:b86d15c6ba29 | 727 | the check value by one. */ |
Vanger | 0:b86d15c6ba29 | 728 | CYASSL_MSG("### TLSX semaphore colision or overflow detected!"); |
Vanger | 0:b86d15c6ba29 | 729 | } |
Vanger | 0:b86d15c6ba29 | 730 | } |
Vanger | 0:b86d15c6ba29 | 731 | |
Vanger | 0:b86d15c6ba29 | 732 | return type; |
Vanger | 0:b86d15c6ba29 | 733 | } |
Vanger | 0:b86d15c6ba29 | 734 | |
Vanger | 0:b86d15c6ba29 | 735 | |
Vanger | 0:b86d15c6ba29 | 736 | #define IS_OFF(semaphore, light) \ |
Vanger | 0:b86d15c6ba29 | 737 | ((semaphore)[(light) / 8] ^ (byte) (0x01 << ((light) % 8))) |
Vanger | 0:b86d15c6ba29 | 738 | |
Vanger | 0:b86d15c6ba29 | 739 | |
Vanger | 0:b86d15c6ba29 | 740 | #define TURN_ON(semaphore, light) \ |
Vanger | 0:b86d15c6ba29 | 741 | ((semaphore)[(light) / 8] |= (byte) (0x01 << ((light) % 8))) |
Vanger | 0:b86d15c6ba29 | 742 | |
Vanger | 0:b86d15c6ba29 | 743 | |
Vanger | 0:b86d15c6ba29 | 744 | static int TLSX_Push(TLSX** list, TLSX_Type type, void* data) |
Vanger | 0:b86d15c6ba29 | 745 | { |
Vanger | 0:b86d15c6ba29 | 746 | TLSX* extension; |
Vanger | 0:b86d15c6ba29 | 747 | |
Vanger | 0:b86d15c6ba29 | 748 | extension = (TLSX*)XMALLOC(sizeof(TLSX), 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 749 | if (extension == NULL) |
Vanger | 0:b86d15c6ba29 | 750 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 751 | |
Vanger | 0:b86d15c6ba29 | 752 | extension->type = type; |
Vanger | 0:b86d15c6ba29 | 753 | extension->data = data; |
Vanger | 0:b86d15c6ba29 | 754 | extension->resp = 0; |
Vanger | 0:b86d15c6ba29 | 755 | extension->next = *list; |
Vanger | 0:b86d15c6ba29 | 756 | *list = extension; |
Vanger | 0:b86d15c6ba29 | 757 | |
Vanger | 0:b86d15c6ba29 | 758 | /* remove duplicated extensions, there should be only one of each type. */ |
Vanger | 0:b86d15c6ba29 | 759 | do { |
Vanger | 0:b86d15c6ba29 | 760 | if (extension->next && extension->next->type == type) { |
Vanger | 0:b86d15c6ba29 | 761 | TLSX *next = extension->next; |
Vanger | 0:b86d15c6ba29 | 762 | |
Vanger | 0:b86d15c6ba29 | 763 | extension->next = next->next; |
Vanger | 0:b86d15c6ba29 | 764 | next->next = NULL; |
Vanger | 0:b86d15c6ba29 | 765 | |
Vanger | 0:b86d15c6ba29 | 766 | TLSX_FreeAll(next); |
Vanger | 0:b86d15c6ba29 | 767 | |
Vanger | 0:b86d15c6ba29 | 768 | /* there is no way to occur more than */ |
Vanger | 0:b86d15c6ba29 | 769 | /* two extensions of the same type. */ |
Vanger | 0:b86d15c6ba29 | 770 | break; |
Vanger | 0:b86d15c6ba29 | 771 | } |
Vanger | 0:b86d15c6ba29 | 772 | } while ((extension = extension->next)); |
Vanger | 0:b86d15c6ba29 | 773 | |
Vanger | 0:b86d15c6ba29 | 774 | return 0; |
Vanger | 0:b86d15c6ba29 | 775 | } |
Vanger | 0:b86d15c6ba29 | 776 | |
Vanger | 0:b86d15c6ba29 | 777 | |
Vanger | 0:b86d15c6ba29 | 778 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 779 | |
Vanger | 0:b86d15c6ba29 | 780 | void TLSX_SetResponse(CYASSL* ssl, TLSX_Type type); |
Vanger | 0:b86d15c6ba29 | 781 | |
Vanger | 0:b86d15c6ba29 | 782 | void TLSX_SetResponse(CYASSL* ssl, TLSX_Type type) |
Vanger | 0:b86d15c6ba29 | 783 | { |
Vanger | 0:b86d15c6ba29 | 784 | TLSX *ext = TLSX_Find(ssl->extensions, type); |
Vanger | 0:b86d15c6ba29 | 785 | |
Vanger | 0:b86d15c6ba29 | 786 | if (ext) |
Vanger | 0:b86d15c6ba29 | 787 | ext->resp = 1; |
Vanger | 0:b86d15c6ba29 | 788 | } |
Vanger | 0:b86d15c6ba29 | 789 | |
Vanger | 0:b86d15c6ba29 | 790 | #endif |
Vanger | 0:b86d15c6ba29 | 791 | |
Vanger | 0:b86d15c6ba29 | 792 | /* SNI - Server Name Indication */ |
Vanger | 0:b86d15c6ba29 | 793 | |
Vanger | 0:b86d15c6ba29 | 794 | #ifdef HAVE_SNI |
Vanger | 0:b86d15c6ba29 | 795 | |
Vanger | 0:b86d15c6ba29 | 796 | static void TLSX_SNI_Free(SNI* sni) |
Vanger | 0:b86d15c6ba29 | 797 | { |
Vanger | 0:b86d15c6ba29 | 798 | if (sni) { |
Vanger | 0:b86d15c6ba29 | 799 | switch (sni->type) { |
Vanger | 0:b86d15c6ba29 | 800 | case CYASSL_SNI_HOST_NAME: |
Vanger | 0:b86d15c6ba29 | 801 | XFREE(sni->data.host_name, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 802 | break; |
Vanger | 0:b86d15c6ba29 | 803 | } |
Vanger | 0:b86d15c6ba29 | 804 | |
Vanger | 0:b86d15c6ba29 | 805 | XFREE(sni, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 806 | } |
Vanger | 0:b86d15c6ba29 | 807 | } |
Vanger | 0:b86d15c6ba29 | 808 | |
Vanger | 0:b86d15c6ba29 | 809 | static void TLSX_SNI_FreeAll(SNI* list) |
Vanger | 0:b86d15c6ba29 | 810 | { |
Vanger | 0:b86d15c6ba29 | 811 | SNI* sni; |
Vanger | 0:b86d15c6ba29 | 812 | |
Vanger | 0:b86d15c6ba29 | 813 | while ((sni = list)) { |
Vanger | 0:b86d15c6ba29 | 814 | list = sni->next; |
Vanger | 0:b86d15c6ba29 | 815 | TLSX_SNI_Free(sni); |
Vanger | 0:b86d15c6ba29 | 816 | } |
Vanger | 0:b86d15c6ba29 | 817 | } |
Vanger | 0:b86d15c6ba29 | 818 | |
Vanger | 0:b86d15c6ba29 | 819 | static int TLSX_SNI_Append(SNI** list, byte type, const void* data, word16 size) |
Vanger | 0:b86d15c6ba29 | 820 | { |
Vanger | 0:b86d15c6ba29 | 821 | SNI* sni; |
Vanger | 0:b86d15c6ba29 | 822 | |
Vanger | 0:b86d15c6ba29 | 823 | if (list == NULL) |
Vanger | 0:b86d15c6ba29 | 824 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 825 | |
Vanger | 0:b86d15c6ba29 | 826 | if ((sni = XMALLOC(sizeof(SNI), 0, DYNAMIC_TYPE_TLSX)) == NULL) |
Vanger | 0:b86d15c6ba29 | 827 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 828 | |
Vanger | 0:b86d15c6ba29 | 829 | switch (type) { |
Vanger | 0:b86d15c6ba29 | 830 | case CYASSL_SNI_HOST_NAME: { |
Vanger | 0:b86d15c6ba29 | 831 | sni->data.host_name = XMALLOC(size + 1, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 832 | |
Vanger | 0:b86d15c6ba29 | 833 | if (sni->data.host_name) { |
Vanger | 0:b86d15c6ba29 | 834 | XSTRNCPY(sni->data.host_name, (const char*)data, size); |
Vanger | 0:b86d15c6ba29 | 835 | sni->data.host_name[size] = 0; |
Vanger | 0:b86d15c6ba29 | 836 | } else { |
Vanger | 0:b86d15c6ba29 | 837 | XFREE(sni, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 838 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 839 | } |
Vanger | 0:b86d15c6ba29 | 840 | } |
Vanger | 0:b86d15c6ba29 | 841 | break; |
Vanger | 0:b86d15c6ba29 | 842 | |
Vanger | 0:b86d15c6ba29 | 843 | default: /* invalid type */ |
Vanger | 0:b86d15c6ba29 | 844 | XFREE(sni, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 845 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 846 | } |
Vanger | 0:b86d15c6ba29 | 847 | |
Vanger | 0:b86d15c6ba29 | 848 | sni->type = type; |
Vanger | 0:b86d15c6ba29 | 849 | sni->next = *list; |
Vanger | 0:b86d15c6ba29 | 850 | |
Vanger | 0:b86d15c6ba29 | 851 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 852 | sni->options = 0; |
Vanger | 0:b86d15c6ba29 | 853 | sni->status = CYASSL_SNI_NO_MATCH; |
Vanger | 0:b86d15c6ba29 | 854 | #endif |
Vanger | 0:b86d15c6ba29 | 855 | |
Vanger | 0:b86d15c6ba29 | 856 | *list = sni; |
Vanger | 0:b86d15c6ba29 | 857 | |
Vanger | 0:b86d15c6ba29 | 858 | return 0; |
Vanger | 0:b86d15c6ba29 | 859 | } |
Vanger | 0:b86d15c6ba29 | 860 | |
Vanger | 0:b86d15c6ba29 | 861 | static word16 TLSX_SNI_GetSize(SNI* list) |
Vanger | 0:b86d15c6ba29 | 862 | { |
Vanger | 0:b86d15c6ba29 | 863 | SNI* sni; |
Vanger | 0:b86d15c6ba29 | 864 | word16 length = OPAQUE16_LEN; /* list length */ |
Vanger | 0:b86d15c6ba29 | 865 | |
Vanger | 0:b86d15c6ba29 | 866 | while ((sni = list)) { |
Vanger | 0:b86d15c6ba29 | 867 | list = sni->next; |
Vanger | 0:b86d15c6ba29 | 868 | |
Vanger | 0:b86d15c6ba29 | 869 | length += ENUM_LEN + OPAQUE16_LEN; /* sni type + sni length */ |
Vanger | 0:b86d15c6ba29 | 870 | |
Vanger | 0:b86d15c6ba29 | 871 | switch (sni->type) { |
Vanger | 0:b86d15c6ba29 | 872 | case CYASSL_SNI_HOST_NAME: |
Vanger | 0:b86d15c6ba29 | 873 | length += XSTRLEN((char*)sni->data.host_name); |
Vanger | 0:b86d15c6ba29 | 874 | break; |
Vanger | 0:b86d15c6ba29 | 875 | } |
Vanger | 0:b86d15c6ba29 | 876 | } |
Vanger | 0:b86d15c6ba29 | 877 | |
Vanger | 0:b86d15c6ba29 | 878 | return length; |
Vanger | 0:b86d15c6ba29 | 879 | } |
Vanger | 0:b86d15c6ba29 | 880 | |
Vanger | 0:b86d15c6ba29 | 881 | static word16 TLSX_SNI_Write(SNI* list, byte* output) |
Vanger | 0:b86d15c6ba29 | 882 | { |
Vanger | 0:b86d15c6ba29 | 883 | SNI* sni; |
Vanger | 0:b86d15c6ba29 | 884 | word16 length = 0; |
Vanger | 0:b86d15c6ba29 | 885 | word16 offset = OPAQUE16_LEN; /* list length offset */ |
Vanger | 0:b86d15c6ba29 | 886 | |
Vanger | 0:b86d15c6ba29 | 887 | while ((sni = list)) { |
Vanger | 0:b86d15c6ba29 | 888 | list = sni->next; |
Vanger | 0:b86d15c6ba29 | 889 | |
Vanger | 0:b86d15c6ba29 | 890 | output[offset++] = sni->type; /* sni type */ |
Vanger | 0:b86d15c6ba29 | 891 | |
Vanger | 0:b86d15c6ba29 | 892 | switch (sni->type) { |
Vanger | 0:b86d15c6ba29 | 893 | case CYASSL_SNI_HOST_NAME: |
Vanger | 0:b86d15c6ba29 | 894 | length = XSTRLEN((char*)sni->data.host_name); |
Vanger | 0:b86d15c6ba29 | 895 | |
Vanger | 0:b86d15c6ba29 | 896 | c16toa(length, output + offset); /* sni length */ |
Vanger | 0:b86d15c6ba29 | 897 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 898 | |
Vanger | 0:b86d15c6ba29 | 899 | XMEMCPY(output + offset, sni->data.host_name, length); |
Vanger | 0:b86d15c6ba29 | 900 | |
Vanger | 0:b86d15c6ba29 | 901 | offset += length; |
Vanger | 0:b86d15c6ba29 | 902 | break; |
Vanger | 0:b86d15c6ba29 | 903 | } |
Vanger | 0:b86d15c6ba29 | 904 | } |
Vanger | 0:b86d15c6ba29 | 905 | |
Vanger | 0:b86d15c6ba29 | 906 | c16toa(offset - OPAQUE16_LEN, output); /* writing list length */ |
Vanger | 0:b86d15c6ba29 | 907 | |
Vanger | 0:b86d15c6ba29 | 908 | return offset; |
Vanger | 0:b86d15c6ba29 | 909 | } |
Vanger | 0:b86d15c6ba29 | 910 | |
Vanger | 0:b86d15c6ba29 | 911 | static SNI* TLSX_SNI_Find(SNI *list, byte type) |
Vanger | 0:b86d15c6ba29 | 912 | { |
Vanger | 0:b86d15c6ba29 | 913 | SNI *sni = list; |
Vanger | 0:b86d15c6ba29 | 914 | |
Vanger | 0:b86d15c6ba29 | 915 | while (sni && sni->type != type) |
Vanger | 0:b86d15c6ba29 | 916 | sni = sni->next; |
Vanger | 0:b86d15c6ba29 | 917 | |
Vanger | 0:b86d15c6ba29 | 918 | return sni; |
Vanger | 0:b86d15c6ba29 | 919 | } |
Vanger | 0:b86d15c6ba29 | 920 | |
Vanger | 0:b86d15c6ba29 | 921 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 922 | static void TLSX_SNI_SetStatus(TLSX* extensions, byte type, byte status) |
Vanger | 0:b86d15c6ba29 | 923 | { |
Vanger | 0:b86d15c6ba29 | 924 | TLSX* extension = TLSX_Find(extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 925 | SNI* sni = TLSX_SNI_Find(extension ? extension->data : NULL, type); |
Vanger | 0:b86d15c6ba29 | 926 | |
Vanger | 0:b86d15c6ba29 | 927 | if (sni) { |
Vanger | 0:b86d15c6ba29 | 928 | sni->status = status; |
Vanger | 0:b86d15c6ba29 | 929 | CYASSL_MSG("SNI did match!"); |
Vanger | 0:b86d15c6ba29 | 930 | } |
Vanger | 0:b86d15c6ba29 | 931 | } |
Vanger | 0:b86d15c6ba29 | 932 | |
Vanger | 0:b86d15c6ba29 | 933 | byte TLSX_SNI_Status(TLSX* extensions, byte type) |
Vanger | 0:b86d15c6ba29 | 934 | { |
Vanger | 0:b86d15c6ba29 | 935 | TLSX* extension = TLSX_Find(extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 936 | SNI* sni = TLSX_SNI_Find(extension ? extension->data : NULL, type); |
Vanger | 0:b86d15c6ba29 | 937 | |
Vanger | 0:b86d15c6ba29 | 938 | if (sni) |
Vanger | 0:b86d15c6ba29 | 939 | return sni->status; |
Vanger | 0:b86d15c6ba29 | 940 | |
Vanger | 0:b86d15c6ba29 | 941 | return 0; |
Vanger | 0:b86d15c6ba29 | 942 | } |
Vanger | 0:b86d15c6ba29 | 943 | #endif |
Vanger | 0:b86d15c6ba29 | 944 | |
Vanger | 0:b86d15c6ba29 | 945 | static int TLSX_SNI_Parse(CYASSL* ssl, byte* input, word16 length, |
Vanger | 0:b86d15c6ba29 | 946 | byte isRequest) |
Vanger | 0:b86d15c6ba29 | 947 | { |
Vanger | 0:b86d15c6ba29 | 948 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 949 | word16 size = 0; |
Vanger | 0:b86d15c6ba29 | 950 | word16 offset = 0; |
Vanger | 0:b86d15c6ba29 | 951 | #endif |
Vanger | 0:b86d15c6ba29 | 952 | |
Vanger | 0:b86d15c6ba29 | 953 | TLSX *extension = TLSX_Find(ssl->extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 954 | |
Vanger | 0:b86d15c6ba29 | 955 | if (!extension) |
Vanger | 0:b86d15c6ba29 | 956 | extension = TLSX_Find(ssl->ctx->extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 957 | |
Vanger | 0:b86d15c6ba29 | 958 | if (!extension || !extension->data) |
Vanger | 0:b86d15c6ba29 | 959 | return isRequest ? 0 : BUFFER_ERROR; /* not using SNI OR unexpected |
Vanger | 0:b86d15c6ba29 | 960 | SNI response from server. */ |
Vanger | 0:b86d15c6ba29 | 961 | |
Vanger | 0:b86d15c6ba29 | 962 | if (!isRequest) |
Vanger | 0:b86d15c6ba29 | 963 | return length ? BUFFER_ERROR : 0; /* SNI response must be empty! |
Vanger | 0:b86d15c6ba29 | 964 | Nothing else to do. */ |
Vanger | 0:b86d15c6ba29 | 965 | |
Vanger | 0:b86d15c6ba29 | 966 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 967 | |
Vanger | 0:b86d15c6ba29 | 968 | if (OPAQUE16_LEN > length) |
Vanger | 0:b86d15c6ba29 | 969 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 970 | |
Vanger | 0:b86d15c6ba29 | 971 | ato16(input, &size); |
Vanger | 0:b86d15c6ba29 | 972 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 973 | |
Vanger | 0:b86d15c6ba29 | 974 | /* validating sni list length */ |
Vanger | 0:b86d15c6ba29 | 975 | if (length != OPAQUE16_LEN + size) |
Vanger | 0:b86d15c6ba29 | 976 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 977 | |
Vanger | 0:b86d15c6ba29 | 978 | for (size = 0; offset < length; offset += size) { |
Vanger | 0:b86d15c6ba29 | 979 | SNI *sni; |
Vanger | 0:b86d15c6ba29 | 980 | byte type = input[offset++]; |
Vanger | 0:b86d15c6ba29 | 981 | |
Vanger | 0:b86d15c6ba29 | 982 | if (offset + OPAQUE16_LEN > length) |
Vanger | 0:b86d15c6ba29 | 983 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 984 | |
Vanger | 0:b86d15c6ba29 | 985 | ato16(input + offset, &size); |
Vanger | 0:b86d15c6ba29 | 986 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 987 | |
Vanger | 0:b86d15c6ba29 | 988 | if (offset + size > length) |
Vanger | 0:b86d15c6ba29 | 989 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 990 | |
Vanger | 0:b86d15c6ba29 | 991 | if (!(sni = TLSX_SNI_Find((SNI*)extension->data, type))) { |
Vanger | 0:b86d15c6ba29 | 992 | continue; /* not using this SNI type */ |
Vanger | 0:b86d15c6ba29 | 993 | } |
Vanger | 0:b86d15c6ba29 | 994 | |
Vanger | 0:b86d15c6ba29 | 995 | switch(type) { |
Vanger | 0:b86d15c6ba29 | 996 | case CYASSL_SNI_HOST_NAME: { |
Vanger | 0:b86d15c6ba29 | 997 | byte matched = (XSTRLEN(sni->data.host_name) == size) |
Vanger | 0:b86d15c6ba29 | 998 | && (XSTRNCMP(sni->data.host_name, |
Vanger | 0:b86d15c6ba29 | 999 | (const char*)input + offset, size) == 0); |
Vanger | 0:b86d15c6ba29 | 1000 | |
Vanger | 0:b86d15c6ba29 | 1001 | if (matched || sni->options & CYASSL_SNI_ANSWER_ON_MISMATCH) { |
Vanger | 0:b86d15c6ba29 | 1002 | int r = TLSX_UseSNI(&ssl->extensions, |
Vanger | 0:b86d15c6ba29 | 1003 | type, input + offset, size); |
Vanger | 0:b86d15c6ba29 | 1004 | |
Vanger | 0:b86d15c6ba29 | 1005 | if (r != SSL_SUCCESS) return r; /* throw error */ |
Vanger | 0:b86d15c6ba29 | 1006 | |
Vanger | 0:b86d15c6ba29 | 1007 | TLSX_SNI_SetStatus(ssl->extensions, type, |
Vanger | 0:b86d15c6ba29 | 1008 | matched ? CYASSL_SNI_REAL_MATCH : CYASSL_SNI_FAKE_MATCH); |
Vanger | 0:b86d15c6ba29 | 1009 | |
Vanger | 0:b86d15c6ba29 | 1010 | } else if (!(sni->options & CYASSL_SNI_CONTINUE_ON_MISMATCH)) { |
Vanger | 0:b86d15c6ba29 | 1011 | SendAlert(ssl, alert_fatal, unrecognized_name); |
Vanger | 0:b86d15c6ba29 | 1012 | |
Vanger | 0:b86d15c6ba29 | 1013 | return UNKNOWN_SNI_HOST_NAME_E; |
Vanger | 0:b86d15c6ba29 | 1014 | } |
Vanger | 0:b86d15c6ba29 | 1015 | break; |
Vanger | 0:b86d15c6ba29 | 1016 | } |
Vanger | 0:b86d15c6ba29 | 1017 | } |
Vanger | 0:b86d15c6ba29 | 1018 | |
Vanger | 0:b86d15c6ba29 | 1019 | TLSX_SetResponse(ssl, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 1020 | } |
Vanger | 0:b86d15c6ba29 | 1021 | |
Vanger | 0:b86d15c6ba29 | 1022 | #endif |
Vanger | 0:b86d15c6ba29 | 1023 | |
Vanger | 0:b86d15c6ba29 | 1024 | return 0; |
Vanger | 0:b86d15c6ba29 | 1025 | } |
Vanger | 0:b86d15c6ba29 | 1026 | |
Vanger | 0:b86d15c6ba29 | 1027 | int TLSX_UseSNI(TLSX** extensions, byte type, const void* data, word16 size) |
Vanger | 0:b86d15c6ba29 | 1028 | { |
Vanger | 0:b86d15c6ba29 | 1029 | TLSX* extension = TLSX_Find(*extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 1030 | SNI* sni = NULL; |
Vanger | 0:b86d15c6ba29 | 1031 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 1032 | |
Vanger | 0:b86d15c6ba29 | 1033 | if (extensions == NULL || data == NULL) |
Vanger | 0:b86d15c6ba29 | 1034 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1035 | |
Vanger | 0:b86d15c6ba29 | 1036 | if ((ret = TLSX_SNI_Append(&sni, type, data, size)) != 0) |
Vanger | 0:b86d15c6ba29 | 1037 | return ret; |
Vanger | 0:b86d15c6ba29 | 1038 | |
Vanger | 0:b86d15c6ba29 | 1039 | if (!extension) { |
Vanger | 0:b86d15c6ba29 | 1040 | if ((ret = TLSX_Push(extensions, SERVER_NAME_INDICATION, (void*)sni)) |
Vanger | 0:b86d15c6ba29 | 1041 | != 0) { |
Vanger | 0:b86d15c6ba29 | 1042 | TLSX_SNI_Free(sni); |
Vanger | 0:b86d15c6ba29 | 1043 | return ret; |
Vanger | 0:b86d15c6ba29 | 1044 | } |
Vanger | 0:b86d15c6ba29 | 1045 | } |
Vanger | 0:b86d15c6ba29 | 1046 | else { |
Vanger | 0:b86d15c6ba29 | 1047 | /* push new SNI object to extension data. */ |
Vanger | 0:b86d15c6ba29 | 1048 | sni->next = (SNI*)extension->data; |
Vanger | 0:b86d15c6ba29 | 1049 | extension->data = (void*)sni; |
Vanger | 0:b86d15c6ba29 | 1050 | |
Vanger | 0:b86d15c6ba29 | 1051 | /* look for another server name of the same type to remove */ |
Vanger | 0:b86d15c6ba29 | 1052 | do { |
Vanger | 0:b86d15c6ba29 | 1053 | if (sni->next && sni->next->type == type) { |
Vanger | 0:b86d15c6ba29 | 1054 | SNI *next = sni->next; |
Vanger | 0:b86d15c6ba29 | 1055 | |
Vanger | 0:b86d15c6ba29 | 1056 | sni->next = next->next; |
Vanger | 0:b86d15c6ba29 | 1057 | TLSX_SNI_Free(next); |
Vanger | 0:b86d15c6ba29 | 1058 | |
Vanger | 0:b86d15c6ba29 | 1059 | break; |
Vanger | 0:b86d15c6ba29 | 1060 | } |
Vanger | 0:b86d15c6ba29 | 1061 | } while ((sni = sni->next)); |
Vanger | 0:b86d15c6ba29 | 1062 | } |
Vanger | 0:b86d15c6ba29 | 1063 | |
Vanger | 0:b86d15c6ba29 | 1064 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1065 | } |
Vanger | 0:b86d15c6ba29 | 1066 | |
Vanger | 0:b86d15c6ba29 | 1067 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1068 | word16 TLSX_SNI_GetRequest(TLSX* extensions, byte type, void** data) |
Vanger | 0:b86d15c6ba29 | 1069 | { |
Vanger | 0:b86d15c6ba29 | 1070 | TLSX* extension = TLSX_Find(extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 1071 | SNI* sni = TLSX_SNI_Find(extension ? extension->data : NULL, type); |
Vanger | 0:b86d15c6ba29 | 1072 | |
Vanger | 0:b86d15c6ba29 | 1073 | if (sni && sni->status != CYASSL_SNI_NO_MATCH) { |
Vanger | 0:b86d15c6ba29 | 1074 | switch (sni->type) { |
Vanger | 0:b86d15c6ba29 | 1075 | case CYASSL_SNI_HOST_NAME: |
Vanger | 0:b86d15c6ba29 | 1076 | *data = sni->data.host_name; |
Vanger | 0:b86d15c6ba29 | 1077 | return XSTRLEN(*data); |
Vanger | 0:b86d15c6ba29 | 1078 | } |
Vanger | 0:b86d15c6ba29 | 1079 | } |
Vanger | 0:b86d15c6ba29 | 1080 | |
Vanger | 0:b86d15c6ba29 | 1081 | return 0; |
Vanger | 0:b86d15c6ba29 | 1082 | } |
Vanger | 0:b86d15c6ba29 | 1083 | |
Vanger | 0:b86d15c6ba29 | 1084 | void TLSX_SNI_SetOptions(TLSX* extensions, byte type, byte options) |
Vanger | 0:b86d15c6ba29 | 1085 | { |
Vanger | 0:b86d15c6ba29 | 1086 | TLSX* extension = TLSX_Find(extensions, SERVER_NAME_INDICATION); |
Vanger | 0:b86d15c6ba29 | 1087 | SNI* sni = TLSX_SNI_Find(extension ? extension->data : NULL, type); |
Vanger | 0:b86d15c6ba29 | 1088 | |
Vanger | 0:b86d15c6ba29 | 1089 | if (sni) |
Vanger | 0:b86d15c6ba29 | 1090 | sni->options = options; |
Vanger | 0:b86d15c6ba29 | 1091 | } |
Vanger | 0:b86d15c6ba29 | 1092 | |
Vanger | 0:b86d15c6ba29 | 1093 | int TLSX_SNI_GetFromBuffer(const byte* clientHello, word32 helloSz, |
Vanger | 0:b86d15c6ba29 | 1094 | byte type, byte* sni, word32* inOutSz) |
Vanger | 0:b86d15c6ba29 | 1095 | { |
Vanger | 0:b86d15c6ba29 | 1096 | word32 offset = 0; |
Vanger | 0:b86d15c6ba29 | 1097 | word32 len32 = 0; |
Vanger | 0:b86d15c6ba29 | 1098 | word16 len16 = 0; |
Vanger | 0:b86d15c6ba29 | 1099 | |
Vanger | 0:b86d15c6ba29 | 1100 | if (helloSz < RECORD_HEADER_SZ + HANDSHAKE_HEADER_SZ + CLIENT_HELLO_FIRST) |
Vanger | 0:b86d15c6ba29 | 1101 | return INCOMPLETE_DATA; |
Vanger | 0:b86d15c6ba29 | 1102 | |
Vanger | 0:b86d15c6ba29 | 1103 | /* TLS record header */ |
Vanger | 0:b86d15c6ba29 | 1104 | if ((enum ContentType) clientHello[offset++] != handshake) |
Vanger | 0:b86d15c6ba29 | 1105 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1106 | |
Vanger | 0:b86d15c6ba29 | 1107 | if (clientHello[offset++] != SSLv3_MAJOR) |
Vanger | 0:b86d15c6ba29 | 1108 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1109 | |
Vanger | 0:b86d15c6ba29 | 1110 | if (clientHello[offset++] < TLSv1_MINOR) |
Vanger | 0:b86d15c6ba29 | 1111 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1112 | |
Vanger | 0:b86d15c6ba29 | 1113 | ato16(clientHello + offset, &len16); |
Vanger | 0:b86d15c6ba29 | 1114 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1115 | |
Vanger | 0:b86d15c6ba29 | 1116 | if (offset + len16 > helloSz) |
Vanger | 0:b86d15c6ba29 | 1117 | return INCOMPLETE_DATA; |
Vanger | 0:b86d15c6ba29 | 1118 | |
Vanger | 0:b86d15c6ba29 | 1119 | /* Handshake header */ |
Vanger | 0:b86d15c6ba29 | 1120 | if ((enum HandShakeType) clientHello[offset] != client_hello) |
Vanger | 0:b86d15c6ba29 | 1121 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1122 | |
Vanger | 0:b86d15c6ba29 | 1123 | c24to32(clientHello + offset + 1, &len32); |
Vanger | 0:b86d15c6ba29 | 1124 | offset += HANDSHAKE_HEADER_SZ; |
Vanger | 0:b86d15c6ba29 | 1125 | |
Vanger | 0:b86d15c6ba29 | 1126 | if (offset + len32 > helloSz) |
Vanger | 0:b86d15c6ba29 | 1127 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1128 | |
Vanger | 0:b86d15c6ba29 | 1129 | /* client hello */ |
Vanger | 0:b86d15c6ba29 | 1130 | offset += VERSION_SZ + RAN_LEN; /* version, random */ |
Vanger | 0:b86d15c6ba29 | 1131 | |
Vanger | 0:b86d15c6ba29 | 1132 | if (helloSz < offset + clientHello[offset]) |
Vanger | 0:b86d15c6ba29 | 1133 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1134 | |
Vanger | 0:b86d15c6ba29 | 1135 | offset += ENUM_LEN + clientHello[offset]; /* skip session id */ |
Vanger | 0:b86d15c6ba29 | 1136 | |
Vanger | 0:b86d15c6ba29 | 1137 | /* cypher suites */ |
Vanger | 0:b86d15c6ba29 | 1138 | if (helloSz < offset + OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 1139 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1140 | |
Vanger | 0:b86d15c6ba29 | 1141 | ato16(clientHello + offset, &len16); |
Vanger | 0:b86d15c6ba29 | 1142 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1143 | |
Vanger | 0:b86d15c6ba29 | 1144 | if (helloSz < offset + len16) |
Vanger | 0:b86d15c6ba29 | 1145 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1146 | |
Vanger | 0:b86d15c6ba29 | 1147 | offset += len16; /* skip cypher suites */ |
Vanger | 0:b86d15c6ba29 | 1148 | |
Vanger | 0:b86d15c6ba29 | 1149 | /* compression methods */ |
Vanger | 0:b86d15c6ba29 | 1150 | if (helloSz < offset + 1) |
Vanger | 0:b86d15c6ba29 | 1151 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1152 | |
Vanger | 0:b86d15c6ba29 | 1153 | if (helloSz < offset + clientHello[offset]) |
Vanger | 0:b86d15c6ba29 | 1154 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1155 | |
Vanger | 0:b86d15c6ba29 | 1156 | offset += ENUM_LEN + clientHello[offset]; /* skip compression methods */ |
Vanger | 0:b86d15c6ba29 | 1157 | |
Vanger | 0:b86d15c6ba29 | 1158 | /* extensions */ |
Vanger | 0:b86d15c6ba29 | 1159 | if (helloSz < offset + OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 1160 | return 0; /* no extensions in client hello. */ |
Vanger | 0:b86d15c6ba29 | 1161 | |
Vanger | 0:b86d15c6ba29 | 1162 | ato16(clientHello + offset, &len16); |
Vanger | 0:b86d15c6ba29 | 1163 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1164 | |
Vanger | 0:b86d15c6ba29 | 1165 | if (helloSz < offset + len16) |
Vanger | 0:b86d15c6ba29 | 1166 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1167 | |
Vanger | 0:b86d15c6ba29 | 1168 | while (len16 >= OPAQUE16_LEN + OPAQUE16_LEN) { |
Vanger | 0:b86d15c6ba29 | 1169 | word16 extType; |
Vanger | 0:b86d15c6ba29 | 1170 | word16 extLen; |
Vanger | 0:b86d15c6ba29 | 1171 | |
Vanger | 0:b86d15c6ba29 | 1172 | ato16(clientHello + offset, &extType); |
Vanger | 0:b86d15c6ba29 | 1173 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1174 | |
Vanger | 0:b86d15c6ba29 | 1175 | ato16(clientHello + offset, &extLen); |
Vanger | 0:b86d15c6ba29 | 1176 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1177 | |
Vanger | 0:b86d15c6ba29 | 1178 | if (helloSz < offset + extLen) |
Vanger | 0:b86d15c6ba29 | 1179 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1180 | |
Vanger | 0:b86d15c6ba29 | 1181 | if (extType != SERVER_NAME_INDICATION) { |
Vanger | 0:b86d15c6ba29 | 1182 | offset += extLen; /* skip extension */ |
Vanger | 0:b86d15c6ba29 | 1183 | } else { |
Vanger | 0:b86d15c6ba29 | 1184 | word16 listLen; |
Vanger | 0:b86d15c6ba29 | 1185 | |
Vanger | 0:b86d15c6ba29 | 1186 | ato16(clientHello + offset, &listLen); |
Vanger | 0:b86d15c6ba29 | 1187 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1188 | |
Vanger | 0:b86d15c6ba29 | 1189 | if (helloSz < offset + listLen) |
Vanger | 0:b86d15c6ba29 | 1190 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1191 | |
Vanger | 0:b86d15c6ba29 | 1192 | while (listLen > ENUM_LEN + OPAQUE16_LEN) { |
Vanger | 0:b86d15c6ba29 | 1193 | byte sniType = clientHello[offset++]; |
Vanger | 0:b86d15c6ba29 | 1194 | word16 sniLen; |
Vanger | 0:b86d15c6ba29 | 1195 | |
Vanger | 0:b86d15c6ba29 | 1196 | ato16(clientHello + offset, &sniLen); |
Vanger | 0:b86d15c6ba29 | 1197 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1198 | |
Vanger | 0:b86d15c6ba29 | 1199 | if (helloSz < offset + sniLen) |
Vanger | 0:b86d15c6ba29 | 1200 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1201 | |
Vanger | 0:b86d15c6ba29 | 1202 | if (sniType != type) { |
Vanger | 0:b86d15c6ba29 | 1203 | offset += sniLen; |
Vanger | 0:b86d15c6ba29 | 1204 | listLen -= min(ENUM_LEN + OPAQUE16_LEN + sniLen, listLen); |
Vanger | 0:b86d15c6ba29 | 1205 | continue; |
Vanger | 0:b86d15c6ba29 | 1206 | } |
Vanger | 0:b86d15c6ba29 | 1207 | |
Vanger | 0:b86d15c6ba29 | 1208 | *inOutSz = min(sniLen, *inOutSz); |
Vanger | 0:b86d15c6ba29 | 1209 | XMEMCPY(sni, clientHello + offset, *inOutSz); |
Vanger | 0:b86d15c6ba29 | 1210 | |
Vanger | 0:b86d15c6ba29 | 1211 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1212 | } |
Vanger | 0:b86d15c6ba29 | 1213 | } |
Vanger | 0:b86d15c6ba29 | 1214 | |
Vanger | 0:b86d15c6ba29 | 1215 | len16 -= min(2 * OPAQUE16_LEN + extLen, len16); |
Vanger | 0:b86d15c6ba29 | 1216 | } |
Vanger | 0:b86d15c6ba29 | 1217 | |
Vanger | 0:b86d15c6ba29 | 1218 | return len16 ? BUFFER_ERROR : 0; |
Vanger | 0:b86d15c6ba29 | 1219 | } |
Vanger | 0:b86d15c6ba29 | 1220 | |
Vanger | 0:b86d15c6ba29 | 1221 | #endif |
Vanger | 0:b86d15c6ba29 | 1222 | |
Vanger | 0:b86d15c6ba29 | 1223 | #define SNI_FREE_ALL TLSX_SNI_FreeAll |
Vanger | 0:b86d15c6ba29 | 1224 | #define SNI_GET_SIZE TLSX_SNI_GetSize |
Vanger | 0:b86d15c6ba29 | 1225 | #define SNI_WRITE TLSX_SNI_Write |
Vanger | 0:b86d15c6ba29 | 1226 | #define SNI_PARSE TLSX_SNI_Parse |
Vanger | 0:b86d15c6ba29 | 1227 | |
Vanger | 0:b86d15c6ba29 | 1228 | #else |
Vanger | 0:b86d15c6ba29 | 1229 | |
Vanger | 0:b86d15c6ba29 | 1230 | #define SNI_FREE_ALL(list) |
Vanger | 0:b86d15c6ba29 | 1231 | #define SNI_GET_SIZE(list) 0 |
Vanger | 0:b86d15c6ba29 | 1232 | #define SNI_WRITE(a, b) 0 |
Vanger | 0:b86d15c6ba29 | 1233 | #define SNI_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1234 | |
Vanger | 0:b86d15c6ba29 | 1235 | #endif /* HAVE_SNI */ |
Vanger | 0:b86d15c6ba29 | 1236 | |
Vanger | 0:b86d15c6ba29 | 1237 | #ifdef HAVE_MAX_FRAGMENT |
Vanger | 0:b86d15c6ba29 | 1238 | |
Vanger | 0:b86d15c6ba29 | 1239 | static word16 TLSX_MFL_Write(byte* data, byte* output) |
Vanger | 0:b86d15c6ba29 | 1240 | { |
Vanger | 0:b86d15c6ba29 | 1241 | output[0] = data[0]; |
Vanger | 0:b86d15c6ba29 | 1242 | |
Vanger | 0:b86d15c6ba29 | 1243 | return ENUM_LEN; |
Vanger | 0:b86d15c6ba29 | 1244 | } |
Vanger | 0:b86d15c6ba29 | 1245 | |
Vanger | 0:b86d15c6ba29 | 1246 | static int TLSX_MFL_Parse(CYASSL* ssl, byte* input, word16 length, |
Vanger | 0:b86d15c6ba29 | 1247 | byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1248 | { |
Vanger | 0:b86d15c6ba29 | 1249 | if (length != ENUM_LEN) |
Vanger | 0:b86d15c6ba29 | 1250 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1251 | |
Vanger | 0:b86d15c6ba29 | 1252 | switch (*input) { |
Vanger | 0:b86d15c6ba29 | 1253 | case CYASSL_MFL_2_9 : ssl->max_fragment = 512; break; |
Vanger | 0:b86d15c6ba29 | 1254 | case CYASSL_MFL_2_10: ssl->max_fragment = 1024; break; |
Vanger | 0:b86d15c6ba29 | 1255 | case CYASSL_MFL_2_11: ssl->max_fragment = 2048; break; |
Vanger | 0:b86d15c6ba29 | 1256 | case CYASSL_MFL_2_12: ssl->max_fragment = 4096; break; |
Vanger | 0:b86d15c6ba29 | 1257 | case CYASSL_MFL_2_13: ssl->max_fragment = 8192; break; |
Vanger | 0:b86d15c6ba29 | 1258 | |
Vanger | 0:b86d15c6ba29 | 1259 | default: |
Vanger | 0:b86d15c6ba29 | 1260 | SendAlert(ssl, alert_fatal, illegal_parameter); |
Vanger | 0:b86d15c6ba29 | 1261 | |
Vanger | 0:b86d15c6ba29 | 1262 | return UNKNOWN_MAX_FRAG_LEN_E; |
Vanger | 0:b86d15c6ba29 | 1263 | } |
Vanger | 0:b86d15c6ba29 | 1264 | |
Vanger | 0:b86d15c6ba29 | 1265 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1266 | if (isRequest) { |
Vanger | 0:b86d15c6ba29 | 1267 | int r = TLSX_UseMaxFragment(&ssl->extensions, *input); |
Vanger | 0:b86d15c6ba29 | 1268 | |
Vanger | 0:b86d15c6ba29 | 1269 | if (r != SSL_SUCCESS) return r; /* throw error */ |
Vanger | 0:b86d15c6ba29 | 1270 | |
Vanger | 0:b86d15c6ba29 | 1271 | TLSX_SetResponse(ssl, MAX_FRAGMENT_LENGTH); |
Vanger | 0:b86d15c6ba29 | 1272 | } |
Vanger | 0:b86d15c6ba29 | 1273 | #endif |
Vanger | 0:b86d15c6ba29 | 1274 | |
Vanger | 0:b86d15c6ba29 | 1275 | return 0; |
Vanger | 0:b86d15c6ba29 | 1276 | } |
Vanger | 0:b86d15c6ba29 | 1277 | |
Vanger | 0:b86d15c6ba29 | 1278 | int TLSX_UseMaxFragment(TLSX** extensions, byte mfl) |
Vanger | 0:b86d15c6ba29 | 1279 | { |
Vanger | 0:b86d15c6ba29 | 1280 | byte* data = NULL; |
Vanger | 0:b86d15c6ba29 | 1281 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 1282 | |
Vanger | 0:b86d15c6ba29 | 1283 | if (extensions == NULL) |
Vanger | 0:b86d15c6ba29 | 1284 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1285 | |
Vanger | 0:b86d15c6ba29 | 1286 | if (mfl < CYASSL_MFL_2_9 || CYASSL_MFL_2_13 < mfl) |
Vanger | 0:b86d15c6ba29 | 1287 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1288 | |
Vanger | 0:b86d15c6ba29 | 1289 | if ((data = XMALLOC(ENUM_LEN, 0, DYNAMIC_TYPE_TLSX)) == NULL) |
Vanger | 0:b86d15c6ba29 | 1290 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 1291 | |
Vanger | 0:b86d15c6ba29 | 1292 | data[0] = mfl; |
Vanger | 0:b86d15c6ba29 | 1293 | |
Vanger | 0:b86d15c6ba29 | 1294 | /* push new MFL extension. */ |
Vanger | 0:b86d15c6ba29 | 1295 | if ((ret = TLSX_Push(extensions, MAX_FRAGMENT_LENGTH, data)) != 0) { |
Vanger | 0:b86d15c6ba29 | 1296 | XFREE(data, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1297 | return ret; |
Vanger | 0:b86d15c6ba29 | 1298 | } |
Vanger | 0:b86d15c6ba29 | 1299 | |
Vanger | 0:b86d15c6ba29 | 1300 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1301 | } |
Vanger | 0:b86d15c6ba29 | 1302 | |
Vanger | 0:b86d15c6ba29 | 1303 | |
Vanger | 0:b86d15c6ba29 | 1304 | #define MFL_FREE_ALL(data) XFREE(data, 0, DYNAMIC_TYPE_TLSX) |
Vanger | 0:b86d15c6ba29 | 1305 | #define MFL_GET_SIZE(data) ENUM_LEN |
Vanger | 0:b86d15c6ba29 | 1306 | #define MFL_WRITE TLSX_MFL_Write |
Vanger | 0:b86d15c6ba29 | 1307 | #define MFL_PARSE TLSX_MFL_Parse |
Vanger | 0:b86d15c6ba29 | 1308 | |
Vanger | 0:b86d15c6ba29 | 1309 | #else |
Vanger | 0:b86d15c6ba29 | 1310 | |
Vanger | 0:b86d15c6ba29 | 1311 | #define MFL_FREE_ALL(a) |
Vanger | 0:b86d15c6ba29 | 1312 | #define MFL_GET_SIZE(a) 0 |
Vanger | 0:b86d15c6ba29 | 1313 | #define MFL_WRITE(a, b) 0 |
Vanger | 0:b86d15c6ba29 | 1314 | #define MFL_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1315 | |
Vanger | 0:b86d15c6ba29 | 1316 | #endif /* HAVE_MAX_FRAGMENT */ |
Vanger | 0:b86d15c6ba29 | 1317 | |
Vanger | 0:b86d15c6ba29 | 1318 | #ifdef HAVE_TRUNCATED_HMAC |
Vanger | 0:b86d15c6ba29 | 1319 | |
Vanger | 0:b86d15c6ba29 | 1320 | static int TLSX_THM_Parse(CYASSL* ssl, byte* input, word16 length, |
Vanger | 0:b86d15c6ba29 | 1321 | byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1322 | { |
Vanger | 0:b86d15c6ba29 | 1323 | if (length != 0 || input == NULL) |
Vanger | 0:b86d15c6ba29 | 1324 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1325 | |
Vanger | 0:b86d15c6ba29 | 1326 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1327 | if (isRequest) { |
Vanger | 0:b86d15c6ba29 | 1328 | int r = TLSX_UseTruncatedHMAC(&ssl->extensions); |
Vanger | 0:b86d15c6ba29 | 1329 | |
Vanger | 0:b86d15c6ba29 | 1330 | if (r != SSL_SUCCESS) return r; /* throw error */ |
Vanger | 0:b86d15c6ba29 | 1331 | |
Vanger | 0:b86d15c6ba29 | 1332 | TLSX_SetResponse(ssl, TRUNCATED_HMAC); |
Vanger | 0:b86d15c6ba29 | 1333 | } |
Vanger | 0:b86d15c6ba29 | 1334 | #endif |
Vanger | 0:b86d15c6ba29 | 1335 | |
Vanger | 0:b86d15c6ba29 | 1336 | ssl->truncated_hmac = 1; |
Vanger | 0:b86d15c6ba29 | 1337 | |
Vanger | 0:b86d15c6ba29 | 1338 | return 0; |
Vanger | 0:b86d15c6ba29 | 1339 | } |
Vanger | 0:b86d15c6ba29 | 1340 | |
Vanger | 0:b86d15c6ba29 | 1341 | int TLSX_UseTruncatedHMAC(TLSX** extensions) |
Vanger | 0:b86d15c6ba29 | 1342 | { |
Vanger | 0:b86d15c6ba29 | 1343 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 1344 | |
Vanger | 0:b86d15c6ba29 | 1345 | if (extensions == NULL) |
Vanger | 0:b86d15c6ba29 | 1346 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1347 | |
Vanger | 0:b86d15c6ba29 | 1348 | if ((ret = TLSX_Push(extensions, TRUNCATED_HMAC, NULL)) != 0) |
Vanger | 0:b86d15c6ba29 | 1349 | return ret; |
Vanger | 0:b86d15c6ba29 | 1350 | |
Vanger | 0:b86d15c6ba29 | 1351 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1352 | } |
Vanger | 0:b86d15c6ba29 | 1353 | |
Vanger | 0:b86d15c6ba29 | 1354 | #define THM_PARSE TLSX_THM_Parse |
Vanger | 0:b86d15c6ba29 | 1355 | |
Vanger | 0:b86d15c6ba29 | 1356 | #else |
Vanger | 0:b86d15c6ba29 | 1357 | |
Vanger | 0:b86d15c6ba29 | 1358 | #define THM_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1359 | |
Vanger | 0:b86d15c6ba29 | 1360 | #endif /* HAVE_TRUNCATED_HMAC */ |
Vanger | 0:b86d15c6ba29 | 1361 | |
Vanger | 0:b86d15c6ba29 | 1362 | #ifdef HAVE_SUPPORTED_CURVES |
Vanger | 0:b86d15c6ba29 | 1363 | |
Vanger | 0:b86d15c6ba29 | 1364 | #ifndef HAVE_ECC |
Vanger | 0:b86d15c6ba29 | 1365 | #error Elliptic Curves Extension requires Elliptic Curve Cryptography. \ |
Vanger | 0:b86d15c6ba29 | 1366 | Use --enable-ecc in the configure script or define HAVE_ECC. |
Vanger | 0:b86d15c6ba29 | 1367 | #endif |
Vanger | 0:b86d15c6ba29 | 1368 | |
Vanger | 0:b86d15c6ba29 | 1369 | static void TLSX_EllipticCurve_FreeAll(EllipticCurve* list) |
Vanger | 0:b86d15c6ba29 | 1370 | { |
Vanger | 0:b86d15c6ba29 | 1371 | EllipticCurve* curve; |
Vanger | 0:b86d15c6ba29 | 1372 | |
Vanger | 0:b86d15c6ba29 | 1373 | while ((curve = list)) { |
Vanger | 0:b86d15c6ba29 | 1374 | list = curve->next; |
Vanger | 0:b86d15c6ba29 | 1375 | XFREE(curve, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1376 | } |
Vanger | 0:b86d15c6ba29 | 1377 | } |
Vanger | 0:b86d15c6ba29 | 1378 | |
Vanger | 0:b86d15c6ba29 | 1379 | static int TLSX_EllipticCurve_Append(EllipticCurve** list, word16 name) |
Vanger | 0:b86d15c6ba29 | 1380 | { |
Vanger | 0:b86d15c6ba29 | 1381 | EllipticCurve* curve; |
Vanger | 0:b86d15c6ba29 | 1382 | |
Vanger | 0:b86d15c6ba29 | 1383 | if (list == NULL) |
Vanger | 0:b86d15c6ba29 | 1384 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1385 | |
Vanger | 0:b86d15c6ba29 | 1386 | if ((curve = XMALLOC(sizeof(EllipticCurve), 0, DYNAMIC_TYPE_TLSX)) == NULL) |
Vanger | 0:b86d15c6ba29 | 1387 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 1388 | |
Vanger | 0:b86d15c6ba29 | 1389 | curve->name = name; |
Vanger | 0:b86d15c6ba29 | 1390 | curve->next = *list; |
Vanger | 0:b86d15c6ba29 | 1391 | |
Vanger | 0:b86d15c6ba29 | 1392 | *list = curve; |
Vanger | 0:b86d15c6ba29 | 1393 | |
Vanger | 0:b86d15c6ba29 | 1394 | return 0; |
Vanger | 0:b86d15c6ba29 | 1395 | } |
Vanger | 0:b86d15c6ba29 | 1396 | |
Vanger | 0:b86d15c6ba29 | 1397 | #ifndef NO_CYASSL_CLIENT |
Vanger | 0:b86d15c6ba29 | 1398 | |
Vanger | 0:b86d15c6ba29 | 1399 | static void TLSX_EllipticCurve_ValidateRequest(CYASSL* ssl, byte* semaphore) |
Vanger | 0:b86d15c6ba29 | 1400 | { |
Vanger | 0:b86d15c6ba29 | 1401 | int i; |
Vanger | 0:b86d15c6ba29 | 1402 | |
Vanger | 0:b86d15c6ba29 | 1403 | for (i = 0; i < ssl->suites->suiteSz; i+= 2) |
Vanger | 0:b86d15c6ba29 | 1404 | if (ssl->suites->suites[i] == ECC_BYTE) |
Vanger | 0:b86d15c6ba29 | 1405 | return; |
Vanger | 0:b86d15c6ba29 | 1406 | |
Vanger | 0:b86d15c6ba29 | 1407 | /* No elliptic curve suite found */ |
Vanger | 0:b86d15c6ba29 | 1408 | TURN_ON(semaphore, TLSX_ToSemaphore(ELLIPTIC_CURVES)); |
Vanger | 0:b86d15c6ba29 | 1409 | } |
Vanger | 0:b86d15c6ba29 | 1410 | |
Vanger | 0:b86d15c6ba29 | 1411 | static word16 TLSX_EllipticCurve_GetSize(EllipticCurve* list) |
Vanger | 0:b86d15c6ba29 | 1412 | { |
Vanger | 0:b86d15c6ba29 | 1413 | EllipticCurve* curve; |
Vanger | 0:b86d15c6ba29 | 1414 | word16 length = OPAQUE16_LEN; /* list length */ |
Vanger | 0:b86d15c6ba29 | 1415 | |
Vanger | 0:b86d15c6ba29 | 1416 | while ((curve = list)) { |
Vanger | 0:b86d15c6ba29 | 1417 | list = curve->next; |
Vanger | 0:b86d15c6ba29 | 1418 | length += OPAQUE16_LEN; /* curve length */ |
Vanger | 0:b86d15c6ba29 | 1419 | } |
Vanger | 0:b86d15c6ba29 | 1420 | |
Vanger | 0:b86d15c6ba29 | 1421 | return length; |
Vanger | 0:b86d15c6ba29 | 1422 | } |
Vanger | 0:b86d15c6ba29 | 1423 | |
Vanger | 0:b86d15c6ba29 | 1424 | static word16 TLSX_EllipticCurve_WriteR(EllipticCurve* curve, byte* output); |
Vanger | 0:b86d15c6ba29 | 1425 | static word16 TLSX_EllipticCurve_WriteR(EllipticCurve* curve, byte* output) |
Vanger | 0:b86d15c6ba29 | 1426 | { |
Vanger | 0:b86d15c6ba29 | 1427 | word16 offset = 0; |
Vanger | 0:b86d15c6ba29 | 1428 | |
Vanger | 0:b86d15c6ba29 | 1429 | if (!curve) |
Vanger | 0:b86d15c6ba29 | 1430 | return offset; |
Vanger | 0:b86d15c6ba29 | 1431 | |
Vanger | 0:b86d15c6ba29 | 1432 | offset = TLSX_EllipticCurve_WriteR(curve->next, output); |
Vanger | 0:b86d15c6ba29 | 1433 | c16toa(curve->name, output + offset); |
Vanger | 0:b86d15c6ba29 | 1434 | |
Vanger | 0:b86d15c6ba29 | 1435 | return OPAQUE16_LEN + offset; |
Vanger | 0:b86d15c6ba29 | 1436 | } |
Vanger | 0:b86d15c6ba29 | 1437 | |
Vanger | 0:b86d15c6ba29 | 1438 | static word16 TLSX_EllipticCurve_Write(EllipticCurve* list, byte* output) |
Vanger | 0:b86d15c6ba29 | 1439 | { |
Vanger | 0:b86d15c6ba29 | 1440 | word16 length = TLSX_EllipticCurve_WriteR(list, output + OPAQUE16_LEN); |
Vanger | 0:b86d15c6ba29 | 1441 | |
Vanger | 0:b86d15c6ba29 | 1442 | c16toa(length, output); /* writing list length */ |
Vanger | 0:b86d15c6ba29 | 1443 | |
Vanger | 0:b86d15c6ba29 | 1444 | return OPAQUE16_LEN + length; |
Vanger | 0:b86d15c6ba29 | 1445 | } |
Vanger | 0:b86d15c6ba29 | 1446 | |
Vanger | 0:b86d15c6ba29 | 1447 | #endif /* NO_CYASSL_CLIENT */ |
Vanger | 0:b86d15c6ba29 | 1448 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1449 | |
Vanger | 0:b86d15c6ba29 | 1450 | static int TLSX_EllipticCurve_Parse(CYASSL* ssl, byte* input, word16 length, |
Vanger | 0:b86d15c6ba29 | 1451 | byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1452 | { |
Vanger | 0:b86d15c6ba29 | 1453 | word16 offset; |
Vanger | 0:b86d15c6ba29 | 1454 | word16 name; |
Vanger | 0:b86d15c6ba29 | 1455 | int r; |
Vanger | 0:b86d15c6ba29 | 1456 | |
Vanger | 0:b86d15c6ba29 | 1457 | (void) isRequest; /* shut up compiler! */ |
Vanger | 0:b86d15c6ba29 | 1458 | |
Vanger | 0:b86d15c6ba29 | 1459 | if (OPAQUE16_LEN > length || length % OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 1460 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1461 | |
Vanger | 0:b86d15c6ba29 | 1462 | ato16(input, &offset); |
Vanger | 0:b86d15c6ba29 | 1463 | |
Vanger | 0:b86d15c6ba29 | 1464 | /* validating curve list length */ |
Vanger | 0:b86d15c6ba29 | 1465 | if (length != OPAQUE16_LEN + offset) |
Vanger | 0:b86d15c6ba29 | 1466 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1467 | |
Vanger | 0:b86d15c6ba29 | 1468 | while (offset) { |
Vanger | 0:b86d15c6ba29 | 1469 | ato16(input + offset, &name); |
Vanger | 0:b86d15c6ba29 | 1470 | offset -= OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1471 | |
Vanger | 0:b86d15c6ba29 | 1472 | r = TLSX_UseSupportedCurve(&ssl->extensions, name); |
Vanger | 0:b86d15c6ba29 | 1473 | |
Vanger | 0:b86d15c6ba29 | 1474 | if (r != SSL_SUCCESS) return r; /* throw error */ |
Vanger | 0:b86d15c6ba29 | 1475 | } |
Vanger | 0:b86d15c6ba29 | 1476 | |
Vanger | 0:b86d15c6ba29 | 1477 | return 0; |
Vanger | 0:b86d15c6ba29 | 1478 | } |
Vanger | 0:b86d15c6ba29 | 1479 | |
Vanger | 0:b86d15c6ba29 | 1480 | int TLSX_ValidateEllipticCurves(CYASSL* ssl, byte first, byte second) { |
Vanger | 0:b86d15c6ba29 | 1481 | TLSX* extension = (first == ECC_BYTE) |
Vanger | 0:b86d15c6ba29 | 1482 | ? TLSX_Find(ssl->extensions, ELLIPTIC_CURVES) |
Vanger | 0:b86d15c6ba29 | 1483 | : NULL; |
Vanger | 0:b86d15c6ba29 | 1484 | EllipticCurve* curve = NULL; |
Vanger | 0:b86d15c6ba29 | 1485 | word32 oid = 0; |
Vanger | 0:b86d15c6ba29 | 1486 | word16 octets = 0; /* acording to 'ecc_set_type ecc_sets[];' */ |
Vanger | 0:b86d15c6ba29 | 1487 | int sig = 0; /* valitade signature */ |
Vanger | 0:b86d15c6ba29 | 1488 | int key = 0; /* validate key */ |
Vanger | 0:b86d15c6ba29 | 1489 | |
Vanger | 0:b86d15c6ba29 | 1490 | (void)oid; |
Vanger | 0:b86d15c6ba29 | 1491 | (void)octets; |
Vanger | 0:b86d15c6ba29 | 1492 | |
Vanger | 0:b86d15c6ba29 | 1493 | if (!extension) |
Vanger | 0:b86d15c6ba29 | 1494 | return 1; /* no suite restriction */ |
Vanger | 0:b86d15c6ba29 | 1495 | |
Vanger | 0:b86d15c6ba29 | 1496 | for (curve = extension->data; curve && !(sig && key); curve = curve->next) { |
Vanger | 0:b86d15c6ba29 | 1497 | |
Vanger | 0:b86d15c6ba29 | 1498 | switch (curve->name) { |
Vanger | 0:b86d15c6ba29 | 1499 | case CYASSL_ECC_SECP160R1: oid = ECC_160R1; octets = 20; break; |
Vanger | 0:b86d15c6ba29 | 1500 | case CYASSL_ECC_SECP192R1: oid = ECC_192R1; octets = 24; break; |
Vanger | 0:b86d15c6ba29 | 1501 | case CYASSL_ECC_SECP224R1: oid = ECC_224R1; octets = 28; break; |
Vanger | 0:b86d15c6ba29 | 1502 | case CYASSL_ECC_SECP256R1: oid = ECC_256R1; octets = 32; break; |
Vanger | 0:b86d15c6ba29 | 1503 | case CYASSL_ECC_SECP384R1: oid = ECC_384R1; octets = 48; break; |
Vanger | 0:b86d15c6ba29 | 1504 | case CYASSL_ECC_SECP521R1: oid = ECC_521R1; octets = 66; break; |
Vanger | 0:b86d15c6ba29 | 1505 | default: continue; /* unsupported curve */ |
Vanger | 0:b86d15c6ba29 | 1506 | } |
Vanger | 0:b86d15c6ba29 | 1507 | |
Vanger | 0:b86d15c6ba29 | 1508 | switch (second) { |
Vanger | 0:b86d15c6ba29 | 1509 | #ifndef NO_DSA |
Vanger | 0:b86d15c6ba29 | 1510 | /* ECDHE_ECDSA */ |
Vanger | 0:b86d15c6ba29 | 1511 | case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1512 | case TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1513 | case TLS_ECDHE_ECDSA_WITH_RC4_128_SHA: |
Vanger | 0:b86d15c6ba29 | 1514 | case TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1515 | case TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256: |
Vanger | 0:b86d15c6ba29 | 1516 | case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384: |
Vanger | 0:b86d15c6ba29 | 1517 | case TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256: |
Vanger | 0:b86d15c6ba29 | 1518 | case TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384: |
Vanger | 0:b86d15c6ba29 | 1519 | case TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8: |
Vanger | 0:b86d15c6ba29 | 1520 | case TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8: |
Vanger | 0:b86d15c6ba29 | 1521 | sig |= ssl->pkCurveOID == oid; |
Vanger | 0:b86d15c6ba29 | 1522 | key |= ssl->eccTempKeySz == octets; |
Vanger | 0:b86d15c6ba29 | 1523 | break; |
Vanger | 0:b86d15c6ba29 | 1524 | |
Vanger | 0:b86d15c6ba29 | 1525 | /* ECDH_ECDSA */ |
Vanger | 0:b86d15c6ba29 | 1526 | case TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1527 | case TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1528 | case TLS_ECDH_ECDSA_WITH_RC4_128_SHA: |
Vanger | 0:b86d15c6ba29 | 1529 | case TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1530 | case TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256: |
Vanger | 0:b86d15c6ba29 | 1531 | case TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384: |
Vanger | 0:b86d15c6ba29 | 1532 | case TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256: |
Vanger | 0:b86d15c6ba29 | 1533 | case TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384: |
Vanger | 0:b86d15c6ba29 | 1534 | sig |= ssl->pkCurveOID == oid; |
Vanger | 0:b86d15c6ba29 | 1535 | key |= ssl->pkCurveOID == oid; |
Vanger | 0:b86d15c6ba29 | 1536 | break; |
Vanger | 0:b86d15c6ba29 | 1537 | #endif |
Vanger | 0:b86d15c6ba29 | 1538 | #ifndef NO_RSA |
Vanger | 0:b86d15c6ba29 | 1539 | /* ECDHE_RSA */ |
Vanger | 0:b86d15c6ba29 | 1540 | case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1541 | case TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1542 | case TLS_ECDHE_RSA_WITH_RC4_128_SHA: |
Vanger | 0:b86d15c6ba29 | 1543 | case TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1544 | case TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256: |
Vanger | 0:b86d15c6ba29 | 1545 | case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384: |
Vanger | 0:b86d15c6ba29 | 1546 | case TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256: |
Vanger | 0:b86d15c6ba29 | 1547 | case TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384: |
Vanger | 0:b86d15c6ba29 | 1548 | sig = 1; |
Vanger | 0:b86d15c6ba29 | 1549 | key |= ssl->eccTempKeySz == octets; |
Vanger | 0:b86d15c6ba29 | 1550 | break; |
Vanger | 0:b86d15c6ba29 | 1551 | |
Vanger | 0:b86d15c6ba29 | 1552 | /* ECDH_RSA */ |
Vanger | 0:b86d15c6ba29 | 1553 | case TLS_ECDH_RSA_WITH_AES_256_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1554 | case TLS_ECDH_RSA_WITH_AES_128_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1555 | case TLS_ECDH_RSA_WITH_RC4_128_SHA: |
Vanger | 0:b86d15c6ba29 | 1556 | case TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA: |
Vanger | 0:b86d15c6ba29 | 1557 | case TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256: |
Vanger | 0:b86d15c6ba29 | 1558 | case TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384: |
Vanger | 0:b86d15c6ba29 | 1559 | case TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256: |
Vanger | 0:b86d15c6ba29 | 1560 | case TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384: |
Vanger | 0:b86d15c6ba29 | 1561 | sig = 1; |
Vanger | 0:b86d15c6ba29 | 1562 | key |= ssl->pkCurveOID == oid; |
Vanger | 0:b86d15c6ba29 | 1563 | break; |
Vanger | 0:b86d15c6ba29 | 1564 | #endif |
Vanger | 0:b86d15c6ba29 | 1565 | default: |
Vanger | 0:b86d15c6ba29 | 1566 | sig = 1; |
Vanger | 0:b86d15c6ba29 | 1567 | key = 1; |
Vanger | 0:b86d15c6ba29 | 1568 | break; |
Vanger | 0:b86d15c6ba29 | 1569 | } |
Vanger | 0:b86d15c6ba29 | 1570 | } |
Vanger | 0:b86d15c6ba29 | 1571 | |
Vanger | 0:b86d15c6ba29 | 1572 | return sig && key; |
Vanger | 0:b86d15c6ba29 | 1573 | } |
Vanger | 0:b86d15c6ba29 | 1574 | |
Vanger | 0:b86d15c6ba29 | 1575 | #endif /* NO_CYASSL_SERVER */ |
Vanger | 0:b86d15c6ba29 | 1576 | |
Vanger | 0:b86d15c6ba29 | 1577 | int TLSX_UseSupportedCurve(TLSX** extensions, word16 name) |
Vanger | 0:b86d15c6ba29 | 1578 | { |
Vanger | 0:b86d15c6ba29 | 1579 | TLSX* extension = TLSX_Find(*extensions, ELLIPTIC_CURVES); |
Vanger | 0:b86d15c6ba29 | 1580 | EllipticCurve* curve = NULL; |
Vanger | 0:b86d15c6ba29 | 1581 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 1582 | |
Vanger | 0:b86d15c6ba29 | 1583 | if (extensions == NULL) |
Vanger | 0:b86d15c6ba29 | 1584 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1585 | |
Vanger | 0:b86d15c6ba29 | 1586 | if ((ret = TLSX_EllipticCurve_Append(&curve, name)) != 0) |
Vanger | 0:b86d15c6ba29 | 1587 | return ret; |
Vanger | 0:b86d15c6ba29 | 1588 | |
Vanger | 0:b86d15c6ba29 | 1589 | if (!extension) { |
Vanger | 0:b86d15c6ba29 | 1590 | if ((ret = TLSX_Push(extensions, ELLIPTIC_CURVES, curve)) != 0) { |
Vanger | 0:b86d15c6ba29 | 1591 | XFREE(curve, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1592 | return ret; |
Vanger | 0:b86d15c6ba29 | 1593 | } |
Vanger | 0:b86d15c6ba29 | 1594 | } |
Vanger | 0:b86d15c6ba29 | 1595 | else { |
Vanger | 0:b86d15c6ba29 | 1596 | /* push new EllipticCurve object to extension data. */ |
Vanger | 0:b86d15c6ba29 | 1597 | curve->next = (EllipticCurve*)extension->data; |
Vanger | 0:b86d15c6ba29 | 1598 | extension->data = (void*)curve; |
Vanger | 0:b86d15c6ba29 | 1599 | |
Vanger | 0:b86d15c6ba29 | 1600 | /* look for another curve of the same name to remove (replacement) */ |
Vanger | 0:b86d15c6ba29 | 1601 | do { |
Vanger | 0:b86d15c6ba29 | 1602 | if (curve->next && curve->next->name == name) { |
Vanger | 0:b86d15c6ba29 | 1603 | EllipticCurve *next = curve->next; |
Vanger | 0:b86d15c6ba29 | 1604 | |
Vanger | 0:b86d15c6ba29 | 1605 | curve->next = next->next; |
Vanger | 0:b86d15c6ba29 | 1606 | XFREE(next, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1607 | |
Vanger | 0:b86d15c6ba29 | 1608 | break; |
Vanger | 0:b86d15c6ba29 | 1609 | } |
Vanger | 0:b86d15c6ba29 | 1610 | } while ((curve = curve->next)); |
Vanger | 0:b86d15c6ba29 | 1611 | } |
Vanger | 0:b86d15c6ba29 | 1612 | |
Vanger | 0:b86d15c6ba29 | 1613 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1614 | } |
Vanger | 0:b86d15c6ba29 | 1615 | |
Vanger | 0:b86d15c6ba29 | 1616 | #define EC_FREE_ALL TLSX_EllipticCurve_FreeAll |
Vanger | 0:b86d15c6ba29 | 1617 | #define EC_VALIDATE_REQUEST TLSX_EllipticCurve_ValidateRequest |
Vanger | 0:b86d15c6ba29 | 1618 | |
Vanger | 0:b86d15c6ba29 | 1619 | #ifndef NO_CYASSL_CLIENT |
Vanger | 0:b86d15c6ba29 | 1620 | #define EC_GET_SIZE TLSX_EllipticCurve_GetSize |
Vanger | 0:b86d15c6ba29 | 1621 | #define EC_WRITE TLSX_EllipticCurve_Write |
Vanger | 0:b86d15c6ba29 | 1622 | #else |
Vanger | 0:b86d15c6ba29 | 1623 | #define EC_GET_SIZE(list) 0 |
Vanger | 0:b86d15c6ba29 | 1624 | #define EC_WRITE(a, b) 0 |
Vanger | 0:b86d15c6ba29 | 1625 | #endif |
Vanger | 0:b86d15c6ba29 | 1626 | |
Vanger | 0:b86d15c6ba29 | 1627 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1628 | #define EC_PARSE TLSX_EllipticCurve_Parse |
Vanger | 0:b86d15c6ba29 | 1629 | #else |
Vanger | 0:b86d15c6ba29 | 1630 | #define EC_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1631 | #endif |
Vanger | 0:b86d15c6ba29 | 1632 | |
Vanger | 0:b86d15c6ba29 | 1633 | #else |
Vanger | 0:b86d15c6ba29 | 1634 | |
Vanger | 0:b86d15c6ba29 | 1635 | #define EC_FREE_ALL(list) |
Vanger | 0:b86d15c6ba29 | 1636 | #define EC_GET_SIZE(list) 0 |
Vanger | 0:b86d15c6ba29 | 1637 | #define EC_WRITE(a, b) 0 |
Vanger | 0:b86d15c6ba29 | 1638 | #define EC_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1639 | #define EC_VALIDATE_REQUEST(a, b) |
Vanger | 0:b86d15c6ba29 | 1640 | |
Vanger | 0:b86d15c6ba29 | 1641 | #endif /* HAVE_SUPPORTED_CURVES */ |
Vanger | 0:b86d15c6ba29 | 1642 | |
Vanger | 0:b86d15c6ba29 | 1643 | #ifdef HAVE_SECURE_RENEGOTIATION |
Vanger | 0:b86d15c6ba29 | 1644 | |
Vanger | 0:b86d15c6ba29 | 1645 | static byte TLSX_SecureRenegotiation_GetSize(SecureRenegotiation* data, |
Vanger | 0:b86d15c6ba29 | 1646 | int isRequest) |
Vanger | 0:b86d15c6ba29 | 1647 | { |
Vanger | 0:b86d15c6ba29 | 1648 | byte length = OPAQUE8_LEN; /* empty info length */ |
Vanger | 0:b86d15c6ba29 | 1649 | |
Vanger | 0:b86d15c6ba29 | 1650 | if (data->enabled) { |
Vanger | 0:b86d15c6ba29 | 1651 | /* client sends client_verify_data only */ |
Vanger | 0:b86d15c6ba29 | 1652 | length += TLS_FINISHED_SZ; |
Vanger | 0:b86d15c6ba29 | 1653 | |
Vanger | 0:b86d15c6ba29 | 1654 | /* server also sends server_verify_data */ |
Vanger | 0:b86d15c6ba29 | 1655 | if (!isRequest) |
Vanger | 0:b86d15c6ba29 | 1656 | length += TLS_FINISHED_SZ; |
Vanger | 0:b86d15c6ba29 | 1657 | } |
Vanger | 0:b86d15c6ba29 | 1658 | |
Vanger | 0:b86d15c6ba29 | 1659 | return length; |
Vanger | 0:b86d15c6ba29 | 1660 | } |
Vanger | 0:b86d15c6ba29 | 1661 | |
Vanger | 0:b86d15c6ba29 | 1662 | static word16 TLSX_SecureRenegotiation_Write(SecureRenegotiation* data, |
Vanger | 0:b86d15c6ba29 | 1663 | byte* output, int isRequest) |
Vanger | 0:b86d15c6ba29 | 1664 | { |
Vanger | 0:b86d15c6ba29 | 1665 | word16 offset = OPAQUE8_LEN; /* RenegotiationInfo length */ |
Vanger | 0:b86d15c6ba29 | 1666 | |
Vanger | 0:b86d15c6ba29 | 1667 | if (data->enabled) { |
Vanger | 0:b86d15c6ba29 | 1668 | /* client sends client_verify_data only */ |
Vanger | 0:b86d15c6ba29 | 1669 | XMEMCPY(output + offset, data->client_verify_data, TLS_FINISHED_SZ); |
Vanger | 0:b86d15c6ba29 | 1670 | offset += TLS_FINISHED_SZ; |
Vanger | 0:b86d15c6ba29 | 1671 | |
Vanger | 0:b86d15c6ba29 | 1672 | /* server also sends server_verify_data */ |
Vanger | 0:b86d15c6ba29 | 1673 | if (!isRequest) { |
Vanger | 0:b86d15c6ba29 | 1674 | XMEMCPY(output + offset, data->server_verify_data, TLS_FINISHED_SZ); |
Vanger | 0:b86d15c6ba29 | 1675 | offset += TLS_FINISHED_SZ; |
Vanger | 0:b86d15c6ba29 | 1676 | } |
Vanger | 0:b86d15c6ba29 | 1677 | } |
Vanger | 0:b86d15c6ba29 | 1678 | |
Vanger | 0:b86d15c6ba29 | 1679 | output[0] = offset - 1; /* info length - self */ |
Vanger | 0:b86d15c6ba29 | 1680 | |
Vanger | 0:b86d15c6ba29 | 1681 | return offset; |
Vanger | 0:b86d15c6ba29 | 1682 | } |
Vanger | 0:b86d15c6ba29 | 1683 | |
Vanger | 0:b86d15c6ba29 | 1684 | static int TLSX_SecureRenegotiation_Parse(CYASSL* ssl, byte* input, |
Vanger | 0:b86d15c6ba29 | 1685 | word16 length, byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1686 | { |
Vanger | 0:b86d15c6ba29 | 1687 | int ret = SECURE_RENEGOTIATION_E; |
Vanger | 0:b86d15c6ba29 | 1688 | |
Vanger | 0:b86d15c6ba29 | 1689 | if (length >= OPAQUE8_LEN) { |
Vanger | 0:b86d15c6ba29 | 1690 | if (ssl->secure_renegotiation == NULL) { |
Vanger | 0:b86d15c6ba29 | 1691 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1692 | if (isRequest && *input == 0) { |
Vanger | 0:b86d15c6ba29 | 1693 | ret = 0; /* don't reply, user didn't enable */ |
Vanger | 0:b86d15c6ba29 | 1694 | } |
Vanger | 0:b86d15c6ba29 | 1695 | #endif |
Vanger | 0:b86d15c6ba29 | 1696 | } |
Vanger | 0:b86d15c6ba29 | 1697 | else if (isRequest) { |
Vanger | 0:b86d15c6ba29 | 1698 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 1699 | if (*input == TLS_FINISHED_SZ) { |
Vanger | 0:b86d15c6ba29 | 1700 | /* TODO compare client_verify_data */ |
Vanger | 0:b86d15c6ba29 | 1701 | ret = 0; |
Vanger | 0:b86d15c6ba29 | 1702 | } |
Vanger | 0:b86d15c6ba29 | 1703 | #endif |
Vanger | 0:b86d15c6ba29 | 1704 | } |
Vanger | 0:b86d15c6ba29 | 1705 | else { |
Vanger | 0:b86d15c6ba29 | 1706 | #ifndef NO_CYASSL_CLIENT |
Vanger | 0:b86d15c6ba29 | 1707 | if (!ssl->secure_renegotiation->enabled) { |
Vanger | 0:b86d15c6ba29 | 1708 | if (*input == 0) { |
Vanger | 0:b86d15c6ba29 | 1709 | ssl->secure_renegotiation->enabled = 1; |
Vanger | 0:b86d15c6ba29 | 1710 | ret = 0; |
Vanger | 0:b86d15c6ba29 | 1711 | } |
Vanger | 0:b86d15c6ba29 | 1712 | } |
Vanger | 0:b86d15c6ba29 | 1713 | else if (*input == 2 * TLS_FINISHED_SZ) { |
Vanger | 0:b86d15c6ba29 | 1714 | /* TODO compare client_verify_data and server_verify_data */ |
Vanger | 0:b86d15c6ba29 | 1715 | ret = 0; |
Vanger | 0:b86d15c6ba29 | 1716 | } |
Vanger | 0:b86d15c6ba29 | 1717 | #endif |
Vanger | 0:b86d15c6ba29 | 1718 | } |
Vanger | 0:b86d15c6ba29 | 1719 | } |
Vanger | 0:b86d15c6ba29 | 1720 | |
Vanger | 0:b86d15c6ba29 | 1721 | if (ret != 0) { |
Vanger | 0:b86d15c6ba29 | 1722 | /* TODO: turn on fatal error at ssl level too */ |
Vanger | 0:b86d15c6ba29 | 1723 | SendAlert(ssl, alert_fatal, handshake_failure); |
Vanger | 0:b86d15c6ba29 | 1724 | } |
Vanger | 0:b86d15c6ba29 | 1725 | |
Vanger | 0:b86d15c6ba29 | 1726 | return ret; |
Vanger | 0:b86d15c6ba29 | 1727 | } |
Vanger | 0:b86d15c6ba29 | 1728 | |
Vanger | 0:b86d15c6ba29 | 1729 | int TLSX_UseSecureRenegotiation(TLSX** extensions) |
Vanger | 0:b86d15c6ba29 | 1730 | { |
Vanger | 0:b86d15c6ba29 | 1731 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 1732 | SecureRenegotiation* data = NULL; |
Vanger | 0:b86d15c6ba29 | 1733 | |
Vanger | 0:b86d15c6ba29 | 1734 | data = (SecureRenegotiation*)XMALLOC(sizeof(SecureRenegotiation), NULL, |
Vanger | 0:b86d15c6ba29 | 1735 | DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1736 | if (data == NULL) |
Vanger | 0:b86d15c6ba29 | 1737 | return MEMORY_E; |
Vanger | 0:b86d15c6ba29 | 1738 | |
Vanger | 0:b86d15c6ba29 | 1739 | XMEMSET(data, 0, sizeof(SecureRenegotiation)); |
Vanger | 0:b86d15c6ba29 | 1740 | |
Vanger | 0:b86d15c6ba29 | 1741 | ret = TLSX_Push(extensions, SECURE_RENEGOTIATION, data); |
Vanger | 0:b86d15c6ba29 | 1742 | if (ret != 0) { |
Vanger | 0:b86d15c6ba29 | 1743 | XFREE(data, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1744 | return ret; |
Vanger | 0:b86d15c6ba29 | 1745 | } |
Vanger | 0:b86d15c6ba29 | 1746 | |
Vanger | 0:b86d15c6ba29 | 1747 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1748 | } |
Vanger | 0:b86d15c6ba29 | 1749 | |
Vanger | 0:b86d15c6ba29 | 1750 | |
Vanger | 0:b86d15c6ba29 | 1751 | #define SCR_FREE_ALL(data) XFREE(data, NULL, DYNAMIC_TYPE_TLSX) |
Vanger | 0:b86d15c6ba29 | 1752 | #define SCR_GET_SIZE TLSX_SecureRenegotiation_GetSize |
Vanger | 0:b86d15c6ba29 | 1753 | #define SCR_WRITE TLSX_SecureRenegotiation_Write |
Vanger | 0:b86d15c6ba29 | 1754 | #define SCR_PARSE TLSX_SecureRenegotiation_Parse |
Vanger | 0:b86d15c6ba29 | 1755 | |
Vanger | 0:b86d15c6ba29 | 1756 | #else |
Vanger | 0:b86d15c6ba29 | 1757 | |
Vanger | 0:b86d15c6ba29 | 1758 | #define SCR_FREE_ALL(a) |
Vanger | 0:b86d15c6ba29 | 1759 | #define SCR_GET_SIZE(a, b) 0 |
Vanger | 0:b86d15c6ba29 | 1760 | #define SCR_WRITE(a, b, c) 0 |
Vanger | 0:b86d15c6ba29 | 1761 | #define SCR_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1762 | |
Vanger | 0:b86d15c6ba29 | 1763 | #endif /* HAVE_SECURE_RENEGOTIATION */ |
Vanger | 0:b86d15c6ba29 | 1764 | |
Vanger | 0:b86d15c6ba29 | 1765 | #ifdef HAVE_SESSION_TICKET |
Vanger | 0:b86d15c6ba29 | 1766 | |
Vanger | 0:b86d15c6ba29 | 1767 | static void TLSX_SessionTicket_ValidateRequest(CYASSL* ssl) |
Vanger | 0:b86d15c6ba29 | 1768 | { |
Vanger | 0:b86d15c6ba29 | 1769 | TLSX* extension = TLSX_Find(ssl->extensions, SESSION_TICKET); |
Vanger | 0:b86d15c6ba29 | 1770 | SessionTicket* ticket = extension ? extension->data : NULL; |
Vanger | 0:b86d15c6ba29 | 1771 | |
Vanger | 0:b86d15c6ba29 | 1772 | if (ticket) { |
Vanger | 0:b86d15c6ba29 | 1773 | /* TODO validate ticket timeout here! */ |
Vanger | 0:b86d15c6ba29 | 1774 | if (ticket->lifetime == 0xfffffff) { |
Vanger | 0:b86d15c6ba29 | 1775 | /* send empty ticket on timeout */ |
Vanger | 0:b86d15c6ba29 | 1776 | TLSX_UseSessionTicket(&ssl->extensions, NULL); |
Vanger | 0:b86d15c6ba29 | 1777 | } |
Vanger | 0:b86d15c6ba29 | 1778 | } |
Vanger | 0:b86d15c6ba29 | 1779 | } |
Vanger | 0:b86d15c6ba29 | 1780 | |
Vanger | 0:b86d15c6ba29 | 1781 | |
Vanger | 0:b86d15c6ba29 | 1782 | static word16 TLSX_SessionTicket_GetSize(SessionTicket* ticket, int isRequest) |
Vanger | 0:b86d15c6ba29 | 1783 | { |
Vanger | 0:b86d15c6ba29 | 1784 | return isRequest && ticket ? ticket->size : 0; |
Vanger | 0:b86d15c6ba29 | 1785 | } |
Vanger | 0:b86d15c6ba29 | 1786 | |
Vanger | 0:b86d15c6ba29 | 1787 | static word16 TLSX_SessionTicket_Write(SessionTicket* ticket, byte* output, |
Vanger | 0:b86d15c6ba29 | 1788 | int isRequest) |
Vanger | 0:b86d15c6ba29 | 1789 | { |
Vanger | 0:b86d15c6ba29 | 1790 | int offset = 0; /* empty ticket */ |
Vanger | 0:b86d15c6ba29 | 1791 | |
Vanger | 0:b86d15c6ba29 | 1792 | if (isRequest && ticket) { |
Vanger | 0:b86d15c6ba29 | 1793 | XMEMCPY(output + offset, ticket->data, ticket->size); |
Vanger | 0:b86d15c6ba29 | 1794 | offset += ticket->size; |
Vanger | 0:b86d15c6ba29 | 1795 | } |
Vanger | 0:b86d15c6ba29 | 1796 | |
Vanger | 0:b86d15c6ba29 | 1797 | return offset; |
Vanger | 0:b86d15c6ba29 | 1798 | } |
Vanger | 0:b86d15c6ba29 | 1799 | |
Vanger | 0:b86d15c6ba29 | 1800 | |
Vanger | 0:b86d15c6ba29 | 1801 | static int TLSX_SessionTicket_Parse(CYASSL* ssl, byte* input, word16 length, |
Vanger | 0:b86d15c6ba29 | 1802 | byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1803 | { |
Vanger | 0:b86d15c6ba29 | 1804 | if (!isRequest) { |
Vanger | 0:b86d15c6ba29 | 1805 | if (length != 0) |
Vanger | 0:b86d15c6ba29 | 1806 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 1807 | |
Vanger | 0:b86d15c6ba29 | 1808 | ssl->expect_session_ticket = 1; |
Vanger | 0:b86d15c6ba29 | 1809 | } |
Vanger | 0:b86d15c6ba29 | 1810 | else { |
Vanger | 0:b86d15c6ba29 | 1811 | /* TODO server side */ |
Vanger | 0:b86d15c6ba29 | 1812 | (void)input; |
Vanger | 0:b86d15c6ba29 | 1813 | } |
Vanger | 0:b86d15c6ba29 | 1814 | |
Vanger | 0:b86d15c6ba29 | 1815 | return 0; |
Vanger | 0:b86d15c6ba29 | 1816 | } |
Vanger | 0:b86d15c6ba29 | 1817 | |
Vanger | 0:b86d15c6ba29 | 1818 | CYASSL_LOCAL SessionTicket* TLSX_SessionTicket_Create(word32 lifetime, |
Vanger | 0:b86d15c6ba29 | 1819 | byte* data, word16 size) |
Vanger | 0:b86d15c6ba29 | 1820 | { |
Vanger | 0:b86d15c6ba29 | 1821 | SessionTicket* ticket = (SessionTicket*)XMALLOC(sizeof(SessionTicket), |
Vanger | 0:b86d15c6ba29 | 1822 | NULL, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1823 | if (ticket) { |
Vanger | 0:b86d15c6ba29 | 1824 | ticket->data = (byte*)XMALLOC(size, NULL, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1825 | if (ticket->data == NULL) { |
Vanger | 0:b86d15c6ba29 | 1826 | XFREE(ticket, NULL, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1827 | return NULL; |
Vanger | 0:b86d15c6ba29 | 1828 | } |
Vanger | 0:b86d15c6ba29 | 1829 | |
Vanger | 0:b86d15c6ba29 | 1830 | XMEMCPY(ticket->data, data, size); |
Vanger | 0:b86d15c6ba29 | 1831 | ticket->size = size; |
Vanger | 0:b86d15c6ba29 | 1832 | ticket->lifetime = lifetime; |
Vanger | 0:b86d15c6ba29 | 1833 | } |
Vanger | 0:b86d15c6ba29 | 1834 | |
Vanger | 0:b86d15c6ba29 | 1835 | return ticket; |
Vanger | 0:b86d15c6ba29 | 1836 | } |
Vanger | 0:b86d15c6ba29 | 1837 | CYASSL_LOCAL void TLSX_SessionTicket_Free(SessionTicket* ticket) |
Vanger | 0:b86d15c6ba29 | 1838 | { |
Vanger | 0:b86d15c6ba29 | 1839 | if (ticket) { |
Vanger | 0:b86d15c6ba29 | 1840 | XFREE(ticket->data, NULL, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1841 | XFREE(ticket, NULL, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1842 | } |
Vanger | 0:b86d15c6ba29 | 1843 | } |
Vanger | 0:b86d15c6ba29 | 1844 | |
Vanger | 0:b86d15c6ba29 | 1845 | int TLSX_UseSessionTicket(TLSX** extensions, SessionTicket* ticket) |
Vanger | 0:b86d15c6ba29 | 1846 | { |
Vanger | 0:b86d15c6ba29 | 1847 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 1848 | |
Vanger | 0:b86d15c6ba29 | 1849 | if (extensions == NULL) |
Vanger | 0:b86d15c6ba29 | 1850 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 1851 | |
Vanger | 0:b86d15c6ba29 | 1852 | /* If the ticket is NULL, the client will request a new ticket from the |
Vanger | 0:b86d15c6ba29 | 1853 | server. Otherwise, the client will use it in the next client hello. */ |
Vanger | 0:b86d15c6ba29 | 1854 | if ((ret = TLSX_Push(extensions, SESSION_TICKET, (void*)ticket)) != 0) |
Vanger | 0:b86d15c6ba29 | 1855 | return ret; |
Vanger | 0:b86d15c6ba29 | 1856 | |
Vanger | 0:b86d15c6ba29 | 1857 | return SSL_SUCCESS; |
Vanger | 0:b86d15c6ba29 | 1858 | } |
Vanger | 0:b86d15c6ba29 | 1859 | |
Vanger | 0:b86d15c6ba29 | 1860 | #define STK_VALIDATE_REQUEST TLSX_SessionTicket_ValidateRequest |
Vanger | 0:b86d15c6ba29 | 1861 | #define STK_GET_SIZE TLSX_SessionTicket_GetSize |
Vanger | 0:b86d15c6ba29 | 1862 | #define STK_WRITE TLSX_SessionTicket_Write |
Vanger | 0:b86d15c6ba29 | 1863 | #define STK_PARSE TLSX_SessionTicket_Parse |
Vanger | 0:b86d15c6ba29 | 1864 | |
Vanger | 0:b86d15c6ba29 | 1865 | #else |
Vanger | 0:b86d15c6ba29 | 1866 | |
Vanger | 0:b86d15c6ba29 | 1867 | #define STK_VALIDATE_REQUEST(a) |
Vanger | 0:b86d15c6ba29 | 1868 | #define STK_GET_SIZE(a, b) 0 |
Vanger | 0:b86d15c6ba29 | 1869 | #define STK_WRITE(a, b, c) 0 |
Vanger | 0:b86d15c6ba29 | 1870 | #define STK_PARSE(a, b, c, d) 0 |
Vanger | 0:b86d15c6ba29 | 1871 | |
Vanger | 0:b86d15c6ba29 | 1872 | #endif /* HAVE_SESSION_TICKET */ |
Vanger | 0:b86d15c6ba29 | 1873 | |
Vanger | 0:b86d15c6ba29 | 1874 | |
Vanger | 0:b86d15c6ba29 | 1875 | TLSX* TLSX_Find(TLSX* list, TLSX_Type type) |
Vanger | 0:b86d15c6ba29 | 1876 | { |
Vanger | 0:b86d15c6ba29 | 1877 | TLSX* extension = list; |
Vanger | 0:b86d15c6ba29 | 1878 | |
Vanger | 0:b86d15c6ba29 | 1879 | while (extension && extension->type != type) |
Vanger | 0:b86d15c6ba29 | 1880 | extension = extension->next; |
Vanger | 0:b86d15c6ba29 | 1881 | |
Vanger | 0:b86d15c6ba29 | 1882 | return extension; |
Vanger | 0:b86d15c6ba29 | 1883 | } |
Vanger | 0:b86d15c6ba29 | 1884 | |
Vanger | 0:b86d15c6ba29 | 1885 | void TLSX_FreeAll(TLSX* list) |
Vanger | 0:b86d15c6ba29 | 1886 | { |
Vanger | 0:b86d15c6ba29 | 1887 | TLSX* extension; |
Vanger | 0:b86d15c6ba29 | 1888 | |
Vanger | 0:b86d15c6ba29 | 1889 | while ((extension = list)) { |
Vanger | 0:b86d15c6ba29 | 1890 | list = extension->next; |
Vanger | 0:b86d15c6ba29 | 1891 | |
Vanger | 0:b86d15c6ba29 | 1892 | switch (extension->type) { |
Vanger | 0:b86d15c6ba29 | 1893 | case SERVER_NAME_INDICATION: |
Vanger | 0:b86d15c6ba29 | 1894 | SNI_FREE_ALL((SNI*)extension->data); |
Vanger | 0:b86d15c6ba29 | 1895 | break; |
Vanger | 0:b86d15c6ba29 | 1896 | |
Vanger | 0:b86d15c6ba29 | 1897 | case MAX_FRAGMENT_LENGTH: |
Vanger | 0:b86d15c6ba29 | 1898 | MFL_FREE_ALL(extension->data); |
Vanger | 0:b86d15c6ba29 | 1899 | break; |
Vanger | 0:b86d15c6ba29 | 1900 | |
Vanger | 0:b86d15c6ba29 | 1901 | case TRUNCATED_HMAC: |
Vanger | 0:b86d15c6ba29 | 1902 | /* Nothing to do. */ |
Vanger | 0:b86d15c6ba29 | 1903 | break; |
Vanger | 0:b86d15c6ba29 | 1904 | |
Vanger | 0:b86d15c6ba29 | 1905 | case ELLIPTIC_CURVES: |
Vanger | 0:b86d15c6ba29 | 1906 | EC_FREE_ALL(extension->data); |
Vanger | 0:b86d15c6ba29 | 1907 | break; |
Vanger | 0:b86d15c6ba29 | 1908 | |
Vanger | 0:b86d15c6ba29 | 1909 | case SECURE_RENEGOTIATION: |
Vanger | 0:b86d15c6ba29 | 1910 | SCR_FREE_ALL(extension->data); |
Vanger | 0:b86d15c6ba29 | 1911 | break; |
Vanger | 0:b86d15c6ba29 | 1912 | |
Vanger | 0:b86d15c6ba29 | 1913 | case SESSION_TICKET: |
Vanger | 0:b86d15c6ba29 | 1914 | /* Nothing to do. */ |
Vanger | 0:b86d15c6ba29 | 1915 | break; |
Vanger | 0:b86d15c6ba29 | 1916 | } |
Vanger | 0:b86d15c6ba29 | 1917 | |
Vanger | 0:b86d15c6ba29 | 1918 | XFREE(extension, 0, DYNAMIC_TYPE_TLSX); |
Vanger | 0:b86d15c6ba29 | 1919 | } |
Vanger | 0:b86d15c6ba29 | 1920 | } |
Vanger | 0:b86d15c6ba29 | 1921 | |
Vanger | 0:b86d15c6ba29 | 1922 | int TLSX_SupportExtensions(CYASSL* ssl) { |
Vanger | 0:b86d15c6ba29 | 1923 | return ssl && (IsTLS(ssl) || ssl->version.major == DTLS_MAJOR); |
Vanger | 0:b86d15c6ba29 | 1924 | } |
Vanger | 0:b86d15c6ba29 | 1925 | |
Vanger | 0:b86d15c6ba29 | 1926 | static word16 TLSX_GetSize(TLSX* list, byte* semaphore, byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1927 | { |
Vanger | 0:b86d15c6ba29 | 1928 | TLSX* extension; |
Vanger | 0:b86d15c6ba29 | 1929 | word16 length = 0; |
Vanger | 0:b86d15c6ba29 | 1930 | |
Vanger | 0:b86d15c6ba29 | 1931 | while ((extension = list)) { |
Vanger | 0:b86d15c6ba29 | 1932 | list = extension->next; |
Vanger | 0:b86d15c6ba29 | 1933 | |
Vanger | 0:b86d15c6ba29 | 1934 | if (!isRequest && !extension->resp) |
Vanger | 0:b86d15c6ba29 | 1935 | continue; /* skip! */ |
Vanger | 0:b86d15c6ba29 | 1936 | |
Vanger | 0:b86d15c6ba29 | 1937 | if (!IS_OFF(semaphore, TLSX_ToSemaphore(extension->type))) |
Vanger | 0:b86d15c6ba29 | 1938 | continue; /* skip! */ |
Vanger | 0:b86d15c6ba29 | 1939 | |
Vanger | 0:b86d15c6ba29 | 1940 | /* type + data length */ |
Vanger | 0:b86d15c6ba29 | 1941 | length += HELLO_EXT_TYPE_SZ + OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1942 | |
Vanger | 0:b86d15c6ba29 | 1943 | switch (extension->type) { |
Vanger | 0:b86d15c6ba29 | 1944 | case SERVER_NAME_INDICATION: |
Vanger | 0:b86d15c6ba29 | 1945 | if (isRequest) |
Vanger | 0:b86d15c6ba29 | 1946 | length += SNI_GET_SIZE(extension->data); |
Vanger | 0:b86d15c6ba29 | 1947 | break; |
Vanger | 0:b86d15c6ba29 | 1948 | case MAX_FRAGMENT_LENGTH: |
Vanger | 0:b86d15c6ba29 | 1949 | length += MFL_GET_SIZE(extension->data); |
Vanger | 0:b86d15c6ba29 | 1950 | break; |
Vanger | 0:b86d15c6ba29 | 1951 | |
Vanger | 0:b86d15c6ba29 | 1952 | case TRUNCATED_HMAC: |
Vanger | 0:b86d15c6ba29 | 1953 | /* empty extension. */ |
Vanger | 0:b86d15c6ba29 | 1954 | break; |
Vanger | 0:b86d15c6ba29 | 1955 | |
Vanger | 0:b86d15c6ba29 | 1956 | case ELLIPTIC_CURVES: |
Vanger | 0:b86d15c6ba29 | 1957 | length += EC_GET_SIZE(extension->data); |
Vanger | 0:b86d15c6ba29 | 1958 | break; |
Vanger | 0:b86d15c6ba29 | 1959 | |
Vanger | 0:b86d15c6ba29 | 1960 | case SECURE_RENEGOTIATION: |
Vanger | 0:b86d15c6ba29 | 1961 | length += SCR_GET_SIZE(extension->data, isRequest); |
Vanger | 0:b86d15c6ba29 | 1962 | break; |
Vanger | 0:b86d15c6ba29 | 1963 | |
Vanger | 0:b86d15c6ba29 | 1964 | case SESSION_TICKET: |
Vanger | 0:b86d15c6ba29 | 1965 | length += STK_GET_SIZE(extension->data, isRequest); |
Vanger | 0:b86d15c6ba29 | 1966 | break; |
Vanger | 0:b86d15c6ba29 | 1967 | } |
Vanger | 0:b86d15c6ba29 | 1968 | |
Vanger | 0:b86d15c6ba29 | 1969 | TURN_ON(semaphore, TLSX_ToSemaphore(extension->type)); |
Vanger | 0:b86d15c6ba29 | 1970 | } |
Vanger | 0:b86d15c6ba29 | 1971 | |
Vanger | 0:b86d15c6ba29 | 1972 | return length; |
Vanger | 0:b86d15c6ba29 | 1973 | } |
Vanger | 0:b86d15c6ba29 | 1974 | |
Vanger | 0:b86d15c6ba29 | 1975 | static word16 TLSX_Write(TLSX* list, byte* output, byte* semaphore, |
Vanger | 0:b86d15c6ba29 | 1976 | byte isRequest) |
Vanger | 0:b86d15c6ba29 | 1977 | { |
Vanger | 0:b86d15c6ba29 | 1978 | TLSX* extension; |
Vanger | 0:b86d15c6ba29 | 1979 | word16 offset = 0; |
Vanger | 0:b86d15c6ba29 | 1980 | word16 length_offset = 0; |
Vanger | 0:b86d15c6ba29 | 1981 | |
Vanger | 0:b86d15c6ba29 | 1982 | while ((extension = list)) { |
Vanger | 0:b86d15c6ba29 | 1983 | list = extension->next; |
Vanger | 0:b86d15c6ba29 | 1984 | |
Vanger | 0:b86d15c6ba29 | 1985 | if (!isRequest && !extension->resp) |
Vanger | 0:b86d15c6ba29 | 1986 | continue; /* skip! */ |
Vanger | 0:b86d15c6ba29 | 1987 | |
Vanger | 0:b86d15c6ba29 | 1988 | if (!IS_OFF(semaphore, TLSX_ToSemaphore(extension->type))) |
Vanger | 0:b86d15c6ba29 | 1989 | continue; /* skip! */ |
Vanger | 0:b86d15c6ba29 | 1990 | |
Vanger | 0:b86d15c6ba29 | 1991 | /* extension type */ |
Vanger | 0:b86d15c6ba29 | 1992 | c16toa(extension->type, output + offset); |
Vanger | 0:b86d15c6ba29 | 1993 | offset += HELLO_EXT_TYPE_SZ + OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 1994 | length_offset = offset; |
Vanger | 0:b86d15c6ba29 | 1995 | |
Vanger | 0:b86d15c6ba29 | 1996 | /* extension data should be written internally */ |
Vanger | 0:b86d15c6ba29 | 1997 | switch (extension->type) { |
Vanger | 0:b86d15c6ba29 | 1998 | case SERVER_NAME_INDICATION: |
Vanger | 0:b86d15c6ba29 | 1999 | if (isRequest) |
Vanger | 0:b86d15c6ba29 | 2000 | offset += SNI_WRITE(extension->data, output + offset); |
Vanger | 0:b86d15c6ba29 | 2001 | break; |
Vanger | 0:b86d15c6ba29 | 2002 | |
Vanger | 0:b86d15c6ba29 | 2003 | case MAX_FRAGMENT_LENGTH: |
Vanger | 0:b86d15c6ba29 | 2004 | offset += MFL_WRITE(extension->data, output + offset); |
Vanger | 0:b86d15c6ba29 | 2005 | break; |
Vanger | 0:b86d15c6ba29 | 2006 | |
Vanger | 0:b86d15c6ba29 | 2007 | case TRUNCATED_HMAC: |
Vanger | 0:b86d15c6ba29 | 2008 | /* empty extension. */ |
Vanger | 0:b86d15c6ba29 | 2009 | break; |
Vanger | 0:b86d15c6ba29 | 2010 | |
Vanger | 0:b86d15c6ba29 | 2011 | case ELLIPTIC_CURVES: |
Vanger | 0:b86d15c6ba29 | 2012 | offset += EC_WRITE(extension->data, output + offset); |
Vanger | 0:b86d15c6ba29 | 2013 | break; |
Vanger | 0:b86d15c6ba29 | 2014 | |
Vanger | 0:b86d15c6ba29 | 2015 | case SECURE_RENEGOTIATION: |
Vanger | 0:b86d15c6ba29 | 2016 | offset += SCR_WRITE(extension->data, output + offset, |
Vanger | 0:b86d15c6ba29 | 2017 | isRequest); |
Vanger | 0:b86d15c6ba29 | 2018 | break; |
Vanger | 0:b86d15c6ba29 | 2019 | |
Vanger | 0:b86d15c6ba29 | 2020 | case SESSION_TICKET: |
Vanger | 0:b86d15c6ba29 | 2021 | offset += STK_WRITE(extension->data, output + offset, |
Vanger | 0:b86d15c6ba29 | 2022 | isRequest); |
Vanger | 0:b86d15c6ba29 | 2023 | break; |
Vanger | 0:b86d15c6ba29 | 2024 | } |
Vanger | 0:b86d15c6ba29 | 2025 | |
Vanger | 0:b86d15c6ba29 | 2026 | /* writing extension data length */ |
Vanger | 0:b86d15c6ba29 | 2027 | c16toa(offset - length_offset, output + length_offset - OPAQUE16_LEN); |
Vanger | 0:b86d15c6ba29 | 2028 | |
Vanger | 0:b86d15c6ba29 | 2029 | TURN_ON(semaphore, TLSX_ToSemaphore(extension->type)); |
Vanger | 0:b86d15c6ba29 | 2030 | } |
Vanger | 0:b86d15c6ba29 | 2031 | |
Vanger | 0:b86d15c6ba29 | 2032 | return offset; |
Vanger | 0:b86d15c6ba29 | 2033 | } |
Vanger | 0:b86d15c6ba29 | 2034 | |
Vanger | 0:b86d15c6ba29 | 2035 | #ifndef NO_CYASSL_CLIENT |
Vanger | 0:b86d15c6ba29 | 2036 | |
Vanger | 0:b86d15c6ba29 | 2037 | word16 TLSX_GetRequestSize(CYASSL* ssl) |
Vanger | 0:b86d15c6ba29 | 2038 | { |
Vanger | 0:b86d15c6ba29 | 2039 | word16 length = 0; |
Vanger | 0:b86d15c6ba29 | 2040 | |
Vanger | 0:b86d15c6ba29 | 2041 | if (TLSX_SupportExtensions(ssl)) { |
Vanger | 0:b86d15c6ba29 | 2042 | byte semaphore[SEMAPHORE_SIZE] = {0}; |
Vanger | 0:b86d15c6ba29 | 2043 | |
Vanger | 0:b86d15c6ba29 | 2044 | EC_VALIDATE_REQUEST(ssl, semaphore); |
Vanger | 0:b86d15c6ba29 | 2045 | STK_VALIDATE_REQUEST(ssl); |
Vanger | 0:b86d15c6ba29 | 2046 | |
Vanger | 0:b86d15c6ba29 | 2047 | if (ssl->extensions) |
Vanger | 0:b86d15c6ba29 | 2048 | length += TLSX_GetSize(ssl->extensions, semaphore, 1); |
Vanger | 0:b86d15c6ba29 | 2049 | |
Vanger | 0:b86d15c6ba29 | 2050 | if (ssl->ctx && ssl->ctx->extensions) |
Vanger | 0:b86d15c6ba29 | 2051 | length += TLSX_GetSize(ssl->ctx->extensions, semaphore, 1); |
Vanger | 0:b86d15c6ba29 | 2052 | |
Vanger | 0:b86d15c6ba29 | 2053 | if (IsAtLeastTLSv1_2(ssl) && ssl->suites->hashSigAlgoSz) |
Vanger | 0:b86d15c6ba29 | 2054 | length += ssl->suites->hashSigAlgoSz + HELLO_EXT_LEN; |
Vanger | 0:b86d15c6ba29 | 2055 | } |
Vanger | 0:b86d15c6ba29 | 2056 | |
Vanger | 0:b86d15c6ba29 | 2057 | if (length) |
Vanger | 0:b86d15c6ba29 | 2058 | length += OPAQUE16_LEN; /* for total length storage */ |
Vanger | 0:b86d15c6ba29 | 2059 | |
Vanger | 0:b86d15c6ba29 | 2060 | return length; |
Vanger | 0:b86d15c6ba29 | 2061 | } |
Vanger | 0:b86d15c6ba29 | 2062 | |
Vanger | 0:b86d15c6ba29 | 2063 | word16 TLSX_WriteRequest(CYASSL* ssl, byte* output) |
Vanger | 0:b86d15c6ba29 | 2064 | { |
Vanger | 0:b86d15c6ba29 | 2065 | word16 offset = 0; |
Vanger | 0:b86d15c6ba29 | 2066 | |
Vanger | 0:b86d15c6ba29 | 2067 | if (TLSX_SupportExtensions(ssl) && output) { |
Vanger | 0:b86d15c6ba29 | 2068 | byte semaphore[SEMAPHORE_SIZE] = {0}; |
Vanger | 0:b86d15c6ba29 | 2069 | |
Vanger | 0:b86d15c6ba29 | 2070 | offset += OPAQUE16_LEN; /* extensions length */ |
Vanger | 0:b86d15c6ba29 | 2071 | |
Vanger | 0:b86d15c6ba29 | 2072 | EC_VALIDATE_REQUEST(ssl, semaphore); |
Vanger | 0:b86d15c6ba29 | 2073 | |
Vanger | 0:b86d15c6ba29 | 2074 | if (ssl->extensions) |
Vanger | 0:b86d15c6ba29 | 2075 | offset += TLSX_Write(ssl->extensions, output + offset, |
Vanger | 0:b86d15c6ba29 | 2076 | semaphore, 1); |
Vanger | 0:b86d15c6ba29 | 2077 | |
Vanger | 0:b86d15c6ba29 | 2078 | if (ssl->ctx && ssl->ctx->extensions) |
Vanger | 0:b86d15c6ba29 | 2079 | offset += TLSX_Write(ssl->ctx->extensions, output + offset, |
Vanger | 0:b86d15c6ba29 | 2080 | semaphore, 1); |
Vanger | 0:b86d15c6ba29 | 2081 | |
Vanger | 0:b86d15c6ba29 | 2082 | if (IsAtLeastTLSv1_2(ssl) && ssl->suites->hashSigAlgoSz) |
Vanger | 0:b86d15c6ba29 | 2083 | { |
Vanger | 0:b86d15c6ba29 | 2084 | int i; |
Vanger | 0:b86d15c6ba29 | 2085 | /* extension type */ |
Vanger | 0:b86d15c6ba29 | 2086 | c16toa(HELLO_EXT_SIG_ALGO, output + offset); |
Vanger | 0:b86d15c6ba29 | 2087 | offset += HELLO_EXT_TYPE_SZ; |
Vanger | 0:b86d15c6ba29 | 2088 | |
Vanger | 0:b86d15c6ba29 | 2089 | /* extension data length */ |
Vanger | 0:b86d15c6ba29 | 2090 | c16toa(OPAQUE16_LEN + ssl->suites->hashSigAlgoSz, output + offset); |
Vanger | 0:b86d15c6ba29 | 2091 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 2092 | |
Vanger | 0:b86d15c6ba29 | 2093 | /* sig algos length */ |
Vanger | 0:b86d15c6ba29 | 2094 | c16toa(ssl->suites->hashSigAlgoSz, output + offset); |
Vanger | 0:b86d15c6ba29 | 2095 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 2096 | |
Vanger | 0:b86d15c6ba29 | 2097 | /* sig algos */ |
Vanger | 0:b86d15c6ba29 | 2098 | for (i = 0; i < ssl->suites->hashSigAlgoSz; i++, offset++) |
Vanger | 0:b86d15c6ba29 | 2099 | output[offset] = ssl->suites->hashSigAlgo[i]; |
Vanger | 0:b86d15c6ba29 | 2100 | } |
Vanger | 0:b86d15c6ba29 | 2101 | |
Vanger | 0:b86d15c6ba29 | 2102 | if (offset > OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 2103 | c16toa(offset - OPAQUE16_LEN, output); /* extensions length */ |
Vanger | 0:b86d15c6ba29 | 2104 | } |
Vanger | 0:b86d15c6ba29 | 2105 | |
Vanger | 0:b86d15c6ba29 | 2106 | return offset; |
Vanger | 0:b86d15c6ba29 | 2107 | } |
Vanger | 0:b86d15c6ba29 | 2108 | |
Vanger | 0:b86d15c6ba29 | 2109 | #endif /* NO_CYASSL_CLIENT */ |
Vanger | 0:b86d15c6ba29 | 2110 | |
Vanger | 0:b86d15c6ba29 | 2111 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 2112 | |
Vanger | 0:b86d15c6ba29 | 2113 | word16 TLSX_GetResponseSize(CYASSL* ssl) |
Vanger | 0:b86d15c6ba29 | 2114 | { |
Vanger | 0:b86d15c6ba29 | 2115 | word16 length = 0; |
Vanger | 0:b86d15c6ba29 | 2116 | byte semaphore[SEMAPHORE_SIZE] = {0}; |
Vanger | 0:b86d15c6ba29 | 2117 | |
Vanger | 0:b86d15c6ba29 | 2118 | if (TLSX_SupportExtensions(ssl)) |
Vanger | 0:b86d15c6ba29 | 2119 | length += TLSX_GetSize(ssl->extensions, semaphore, 0); |
Vanger | 0:b86d15c6ba29 | 2120 | |
Vanger | 0:b86d15c6ba29 | 2121 | /* All the response data is set at the ssl object only, so no ctx here. */ |
Vanger | 0:b86d15c6ba29 | 2122 | |
Vanger | 0:b86d15c6ba29 | 2123 | if (length) |
Vanger | 0:b86d15c6ba29 | 2124 | length += OPAQUE16_LEN; /* for total length storage */ |
Vanger | 0:b86d15c6ba29 | 2125 | |
Vanger | 0:b86d15c6ba29 | 2126 | return length; |
Vanger | 0:b86d15c6ba29 | 2127 | } |
Vanger | 0:b86d15c6ba29 | 2128 | |
Vanger | 0:b86d15c6ba29 | 2129 | word16 TLSX_WriteResponse(CYASSL *ssl, byte* output) |
Vanger | 0:b86d15c6ba29 | 2130 | { |
Vanger | 0:b86d15c6ba29 | 2131 | word16 offset = 0; |
Vanger | 0:b86d15c6ba29 | 2132 | |
Vanger | 0:b86d15c6ba29 | 2133 | if (TLSX_SupportExtensions(ssl) && output) { |
Vanger | 0:b86d15c6ba29 | 2134 | byte semaphore[SEMAPHORE_SIZE] = {0}; |
Vanger | 0:b86d15c6ba29 | 2135 | |
Vanger | 0:b86d15c6ba29 | 2136 | offset += OPAQUE16_LEN; /* extensions length */ |
Vanger | 0:b86d15c6ba29 | 2137 | |
Vanger | 0:b86d15c6ba29 | 2138 | offset += TLSX_Write(ssl->extensions, output + offset, semaphore, 0); |
Vanger | 0:b86d15c6ba29 | 2139 | |
Vanger | 0:b86d15c6ba29 | 2140 | if (offset > OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 2141 | c16toa(offset - OPAQUE16_LEN, output); /* extensions length */ |
Vanger | 0:b86d15c6ba29 | 2142 | } |
Vanger | 0:b86d15c6ba29 | 2143 | |
Vanger | 0:b86d15c6ba29 | 2144 | return offset; |
Vanger | 0:b86d15c6ba29 | 2145 | } |
Vanger | 0:b86d15c6ba29 | 2146 | |
Vanger | 0:b86d15c6ba29 | 2147 | #endif /* NO_CYASSL_SERVER */ |
Vanger | 0:b86d15c6ba29 | 2148 | |
Vanger | 0:b86d15c6ba29 | 2149 | int TLSX_Parse(CYASSL* ssl, byte* input, word16 length, byte isRequest, |
Vanger | 0:b86d15c6ba29 | 2150 | Suites *suites) |
Vanger | 0:b86d15c6ba29 | 2151 | { |
Vanger | 0:b86d15c6ba29 | 2152 | int ret = 0; |
Vanger | 0:b86d15c6ba29 | 2153 | word16 offset = 0; |
Vanger | 0:b86d15c6ba29 | 2154 | |
Vanger | 0:b86d15c6ba29 | 2155 | if (!ssl || !input || (isRequest && !suites)) |
Vanger | 0:b86d15c6ba29 | 2156 | return BAD_FUNC_ARG; |
Vanger | 0:b86d15c6ba29 | 2157 | |
Vanger | 0:b86d15c6ba29 | 2158 | while (ret == 0 && offset < length) { |
Vanger | 0:b86d15c6ba29 | 2159 | word16 type; |
Vanger | 0:b86d15c6ba29 | 2160 | word16 size; |
Vanger | 0:b86d15c6ba29 | 2161 | |
Vanger | 0:b86d15c6ba29 | 2162 | if (length - offset < HELLO_EXT_TYPE_SZ + OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 2163 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 2164 | |
Vanger | 0:b86d15c6ba29 | 2165 | ato16(input + offset, &type); |
Vanger | 0:b86d15c6ba29 | 2166 | offset += HELLO_EXT_TYPE_SZ; |
Vanger | 0:b86d15c6ba29 | 2167 | |
Vanger | 0:b86d15c6ba29 | 2168 | ato16(input + offset, &size); |
Vanger | 0:b86d15c6ba29 | 2169 | offset += OPAQUE16_LEN; |
Vanger | 0:b86d15c6ba29 | 2170 | |
Vanger | 0:b86d15c6ba29 | 2171 | if (offset + size > length) |
Vanger | 0:b86d15c6ba29 | 2172 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 2173 | |
Vanger | 0:b86d15c6ba29 | 2174 | switch (type) { |
Vanger | 0:b86d15c6ba29 | 2175 | case SERVER_NAME_INDICATION: |
Vanger | 0:b86d15c6ba29 | 2176 | CYASSL_MSG("SNI extension received"); |
Vanger | 0:b86d15c6ba29 | 2177 | |
Vanger | 0:b86d15c6ba29 | 2178 | ret = SNI_PARSE(ssl, input + offset, size, isRequest); |
Vanger | 0:b86d15c6ba29 | 2179 | break; |
Vanger | 0:b86d15c6ba29 | 2180 | |
Vanger | 0:b86d15c6ba29 | 2181 | case MAX_FRAGMENT_LENGTH: |
Vanger | 0:b86d15c6ba29 | 2182 | CYASSL_MSG("Max Fragment Length extension received"); |
Vanger | 0:b86d15c6ba29 | 2183 | |
Vanger | 0:b86d15c6ba29 | 2184 | ret = MFL_PARSE(ssl, input + offset, size, isRequest); |
Vanger | 0:b86d15c6ba29 | 2185 | break; |
Vanger | 0:b86d15c6ba29 | 2186 | |
Vanger | 0:b86d15c6ba29 | 2187 | case TRUNCATED_HMAC: |
Vanger | 0:b86d15c6ba29 | 2188 | CYASSL_MSG("Truncated HMAC extension received"); |
Vanger | 0:b86d15c6ba29 | 2189 | |
Vanger | 0:b86d15c6ba29 | 2190 | ret = THM_PARSE(ssl, input + offset, size, isRequest); |
Vanger | 0:b86d15c6ba29 | 2191 | break; |
Vanger | 0:b86d15c6ba29 | 2192 | |
Vanger | 0:b86d15c6ba29 | 2193 | case ELLIPTIC_CURVES: |
Vanger | 0:b86d15c6ba29 | 2194 | CYASSL_MSG("Elliptic Curves extension received"); |
Vanger | 0:b86d15c6ba29 | 2195 | |
Vanger | 0:b86d15c6ba29 | 2196 | ret = EC_PARSE(ssl, input + offset, size, isRequest); |
Vanger | 0:b86d15c6ba29 | 2197 | break; |
Vanger | 0:b86d15c6ba29 | 2198 | |
Vanger | 0:b86d15c6ba29 | 2199 | case SECURE_RENEGOTIATION: |
Vanger | 0:b86d15c6ba29 | 2200 | CYASSL_MSG("Secure Renegotiation extension received"); |
Vanger | 0:b86d15c6ba29 | 2201 | |
Vanger | 0:b86d15c6ba29 | 2202 | ret = SCR_PARSE(ssl, input + offset, size, isRequest); |
Vanger | 0:b86d15c6ba29 | 2203 | break; |
Vanger | 0:b86d15c6ba29 | 2204 | |
Vanger | 0:b86d15c6ba29 | 2205 | case SESSION_TICKET: |
Vanger | 0:b86d15c6ba29 | 2206 | CYASSL_MSG("Session Ticket extension received"); |
Vanger | 0:b86d15c6ba29 | 2207 | |
Vanger | 0:b86d15c6ba29 | 2208 | ret = STK_PARSE(ssl, input + offset, size, isRequest); |
Vanger | 0:b86d15c6ba29 | 2209 | break; |
Vanger | 0:b86d15c6ba29 | 2210 | |
Vanger | 0:b86d15c6ba29 | 2211 | case HELLO_EXT_SIG_ALGO: |
Vanger | 0:b86d15c6ba29 | 2212 | if (isRequest) { |
Vanger | 0:b86d15c6ba29 | 2213 | /* do not mess with offset inside the switch! */ |
Vanger | 0:b86d15c6ba29 | 2214 | if (IsAtLeastTLSv1_2(ssl)) { |
Vanger | 0:b86d15c6ba29 | 2215 | ato16(input + offset, &suites->hashSigAlgoSz); |
Vanger | 0:b86d15c6ba29 | 2216 | |
Vanger | 0:b86d15c6ba29 | 2217 | if (suites->hashSigAlgoSz > size - OPAQUE16_LEN) |
Vanger | 0:b86d15c6ba29 | 2218 | return BUFFER_ERROR; |
Vanger | 0:b86d15c6ba29 | 2219 | |
Vanger | 0:b86d15c6ba29 | 2220 | XMEMCPY(suites->hashSigAlgo, |
Vanger | 0:b86d15c6ba29 | 2221 | input + offset + OPAQUE16_LEN, |
Vanger | 0:b86d15c6ba29 | 2222 | min(suites->hashSigAlgoSz, |
Vanger | 0:b86d15c6ba29 | 2223 | HELLO_EXT_SIGALGO_MAX)); |
Vanger | 0:b86d15c6ba29 | 2224 | } |
Vanger | 0:b86d15c6ba29 | 2225 | } else { |
Vanger | 0:b86d15c6ba29 | 2226 | CYASSL_MSG("Servers MUST NOT send SIG ALGO extension."); |
Vanger | 0:b86d15c6ba29 | 2227 | } |
Vanger | 0:b86d15c6ba29 | 2228 | |
Vanger | 0:b86d15c6ba29 | 2229 | break; |
Vanger | 0:b86d15c6ba29 | 2230 | } |
Vanger | 0:b86d15c6ba29 | 2231 | |
Vanger | 0:b86d15c6ba29 | 2232 | /* offset should be updated here! */ |
Vanger | 0:b86d15c6ba29 | 2233 | offset += size; |
Vanger | 0:b86d15c6ba29 | 2234 | } |
Vanger | 0:b86d15c6ba29 | 2235 | |
Vanger | 0:b86d15c6ba29 | 2236 | return ret; |
Vanger | 0:b86d15c6ba29 | 2237 | } |
Vanger | 0:b86d15c6ba29 | 2238 | |
Vanger | 0:b86d15c6ba29 | 2239 | /* undefining semaphore macros */ |
Vanger | 0:b86d15c6ba29 | 2240 | #undef IS_OFF |
Vanger | 0:b86d15c6ba29 | 2241 | #undef TURN_ON |
Vanger | 0:b86d15c6ba29 | 2242 | #undef SEMAPHORE_SIZE |
Vanger | 0:b86d15c6ba29 | 2243 | |
Vanger | 0:b86d15c6ba29 | 2244 | #endif |
Vanger | 0:b86d15c6ba29 | 2245 | |
Vanger | 0:b86d15c6ba29 | 2246 | |
Vanger | 0:b86d15c6ba29 | 2247 | #ifndef NO_CYASSL_CLIENT |
Vanger | 0:b86d15c6ba29 | 2248 | |
Vanger | 0:b86d15c6ba29 | 2249 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 2250 | |
Vanger | 0:b86d15c6ba29 | 2251 | CYASSL_METHOD* CyaTLSv1_client_method(void) |
Vanger | 0:b86d15c6ba29 | 2252 | { |
Vanger | 0:b86d15c6ba29 | 2253 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2254 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2255 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2256 | if (method) |
Vanger | 0:b86d15c6ba29 | 2257 | InitSSL_Method(method, MakeTLSv1()); |
Vanger | 0:b86d15c6ba29 | 2258 | return method; |
Vanger | 0:b86d15c6ba29 | 2259 | } |
Vanger | 0:b86d15c6ba29 | 2260 | |
Vanger | 0:b86d15c6ba29 | 2261 | |
Vanger | 0:b86d15c6ba29 | 2262 | CYASSL_METHOD* CyaTLSv1_1_client_method(void) |
Vanger | 0:b86d15c6ba29 | 2263 | { |
Vanger | 0:b86d15c6ba29 | 2264 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2265 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2266 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2267 | if (method) |
Vanger | 0:b86d15c6ba29 | 2268 | InitSSL_Method(method, MakeTLSv1_1()); |
Vanger | 0:b86d15c6ba29 | 2269 | return method; |
Vanger | 0:b86d15c6ba29 | 2270 | } |
Vanger | 0:b86d15c6ba29 | 2271 | |
Vanger | 0:b86d15c6ba29 | 2272 | #endif /* !NO_OLD_TLS */ |
Vanger | 0:b86d15c6ba29 | 2273 | |
Vanger | 0:b86d15c6ba29 | 2274 | #ifndef NO_SHA256 /* can't use without SHA256 */ |
Vanger | 0:b86d15c6ba29 | 2275 | |
Vanger | 0:b86d15c6ba29 | 2276 | CYASSL_METHOD* CyaTLSv1_2_client_method(void) |
Vanger | 0:b86d15c6ba29 | 2277 | { |
Vanger | 0:b86d15c6ba29 | 2278 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2279 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2280 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2281 | if (method) |
Vanger | 0:b86d15c6ba29 | 2282 | InitSSL_Method(method, MakeTLSv1_2()); |
Vanger | 0:b86d15c6ba29 | 2283 | return method; |
Vanger | 0:b86d15c6ba29 | 2284 | } |
Vanger | 0:b86d15c6ba29 | 2285 | |
Vanger | 0:b86d15c6ba29 | 2286 | #endif |
Vanger | 0:b86d15c6ba29 | 2287 | |
Vanger | 0:b86d15c6ba29 | 2288 | |
Vanger | 0:b86d15c6ba29 | 2289 | CYASSL_METHOD* CyaSSLv23_client_method(void) |
Vanger | 0:b86d15c6ba29 | 2290 | { |
Vanger | 0:b86d15c6ba29 | 2291 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2292 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2293 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2294 | if (method) { |
Vanger | 0:b86d15c6ba29 | 2295 | #ifndef NO_SHA256 /* 1.2 requires SHA256 */ |
Vanger | 0:b86d15c6ba29 | 2296 | InitSSL_Method(method, MakeTLSv1_2()); |
Vanger | 0:b86d15c6ba29 | 2297 | #else |
Vanger | 0:b86d15c6ba29 | 2298 | InitSSL_Method(method, MakeTLSv1_1()); |
Vanger | 0:b86d15c6ba29 | 2299 | #endif |
Vanger | 0:b86d15c6ba29 | 2300 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 2301 | method->downgrade = 1; |
Vanger | 0:b86d15c6ba29 | 2302 | #endif |
Vanger | 0:b86d15c6ba29 | 2303 | } |
Vanger | 0:b86d15c6ba29 | 2304 | return method; |
Vanger | 0:b86d15c6ba29 | 2305 | } |
Vanger | 0:b86d15c6ba29 | 2306 | |
Vanger | 0:b86d15c6ba29 | 2307 | |
Vanger | 0:b86d15c6ba29 | 2308 | #endif /* NO_CYASSL_CLIENT */ |
Vanger | 0:b86d15c6ba29 | 2309 | |
Vanger | 0:b86d15c6ba29 | 2310 | |
Vanger | 0:b86d15c6ba29 | 2311 | |
Vanger | 0:b86d15c6ba29 | 2312 | #ifndef NO_CYASSL_SERVER |
Vanger | 0:b86d15c6ba29 | 2313 | |
Vanger | 0:b86d15c6ba29 | 2314 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 2315 | |
Vanger | 0:b86d15c6ba29 | 2316 | CYASSL_METHOD* CyaTLSv1_server_method(void) |
Vanger | 0:b86d15c6ba29 | 2317 | { |
Vanger | 0:b86d15c6ba29 | 2318 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2319 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2320 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2321 | if (method) { |
Vanger | 0:b86d15c6ba29 | 2322 | InitSSL_Method(method, MakeTLSv1()); |
Vanger | 0:b86d15c6ba29 | 2323 | method->side = CYASSL_SERVER_END; |
Vanger | 0:b86d15c6ba29 | 2324 | } |
Vanger | 0:b86d15c6ba29 | 2325 | return method; |
Vanger | 0:b86d15c6ba29 | 2326 | } |
Vanger | 0:b86d15c6ba29 | 2327 | |
Vanger | 0:b86d15c6ba29 | 2328 | |
Vanger | 0:b86d15c6ba29 | 2329 | CYASSL_METHOD* CyaTLSv1_1_server_method(void) |
Vanger | 0:b86d15c6ba29 | 2330 | { |
Vanger | 0:b86d15c6ba29 | 2331 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2332 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2333 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2334 | if (method) { |
Vanger | 0:b86d15c6ba29 | 2335 | InitSSL_Method(method, MakeTLSv1_1()); |
Vanger | 0:b86d15c6ba29 | 2336 | method->side = CYASSL_SERVER_END; |
Vanger | 0:b86d15c6ba29 | 2337 | } |
Vanger | 0:b86d15c6ba29 | 2338 | return method; |
Vanger | 0:b86d15c6ba29 | 2339 | } |
Vanger | 0:b86d15c6ba29 | 2340 | |
Vanger | 0:b86d15c6ba29 | 2341 | #endif /* !NO_OLD_TLS */ |
Vanger | 0:b86d15c6ba29 | 2342 | |
Vanger | 0:b86d15c6ba29 | 2343 | #ifndef NO_SHA256 /* can't use without SHA256 */ |
Vanger | 0:b86d15c6ba29 | 2344 | |
Vanger | 0:b86d15c6ba29 | 2345 | CYASSL_METHOD* CyaTLSv1_2_server_method(void) |
Vanger | 0:b86d15c6ba29 | 2346 | { |
Vanger | 0:b86d15c6ba29 | 2347 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2348 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2349 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2350 | if (method) { |
Vanger | 0:b86d15c6ba29 | 2351 | InitSSL_Method(method, MakeTLSv1_2()); |
Vanger | 0:b86d15c6ba29 | 2352 | method->side = CYASSL_SERVER_END; |
Vanger | 0:b86d15c6ba29 | 2353 | } |
Vanger | 0:b86d15c6ba29 | 2354 | return method; |
Vanger | 0:b86d15c6ba29 | 2355 | } |
Vanger | 0:b86d15c6ba29 | 2356 | |
Vanger | 0:b86d15c6ba29 | 2357 | #endif |
Vanger | 0:b86d15c6ba29 | 2358 | |
Vanger | 0:b86d15c6ba29 | 2359 | |
Vanger | 0:b86d15c6ba29 | 2360 | CYASSL_METHOD* CyaSSLv23_server_method(void) |
Vanger | 0:b86d15c6ba29 | 2361 | { |
Vanger | 0:b86d15c6ba29 | 2362 | CYASSL_METHOD* method = |
Vanger | 0:b86d15c6ba29 | 2363 | (CYASSL_METHOD*) XMALLOC(sizeof(CYASSL_METHOD), 0, |
Vanger | 0:b86d15c6ba29 | 2364 | DYNAMIC_TYPE_METHOD); |
Vanger | 0:b86d15c6ba29 | 2365 | if (method) { |
Vanger | 0:b86d15c6ba29 | 2366 | #ifndef NO_SHA256 /* 1.2 requires SHA256 */ |
Vanger | 0:b86d15c6ba29 | 2367 | InitSSL_Method(method, MakeTLSv1_2()); |
Vanger | 0:b86d15c6ba29 | 2368 | #else |
Vanger | 0:b86d15c6ba29 | 2369 | InitSSL_Method(method, MakeTLSv1_1()); |
Vanger | 0:b86d15c6ba29 | 2370 | #endif |
Vanger | 0:b86d15c6ba29 | 2371 | method->side = CYASSL_SERVER_END; |
Vanger | 0:b86d15c6ba29 | 2372 | #ifndef NO_OLD_TLS |
Vanger | 0:b86d15c6ba29 | 2373 | method->downgrade = 1; |
Vanger | 0:b86d15c6ba29 | 2374 | #endif /* !NO_OLD_TLS */ |
Vanger | 0:b86d15c6ba29 | 2375 | } |
Vanger | 0:b86d15c6ba29 | 2376 | return method; |
Vanger | 0:b86d15c6ba29 | 2377 | } |
Vanger | 0:b86d15c6ba29 | 2378 | |
Vanger | 0:b86d15c6ba29 | 2379 | |
Vanger | 0:b86d15c6ba29 | 2380 | |
Vanger | 0:b86d15c6ba29 | 2381 | #endif /* NO_CYASSL_SERVER */ |
Vanger | 0:b86d15c6ba29 | 2382 | #endif /* NO_TLS */ |
Vanger | 0:b86d15c6ba29 | 2383 |