Mercurial > dropbear
annotate common-algo.c @ 1213:7fd1211a1f63
Use dropbear_log instead of some fprintf's in client code.
author | Konstantin Tokarev <ktokarev@smartlabs.tv> |
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date | Tue, 01 Dec 2015 21:56:11 +0300 |
parents | d2f9ef67af15 |
children | 82e2037d34ea |
rev | line source |
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1 /* |
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2 * Dropbear SSH |
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3 * |
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4 * Copyright (c) 2002,2003 Matt Johnston |
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5 * Copyright (c) 2004 by Mihnea Stoenescu |
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6 * All rights reserved. |
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7 * |
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8 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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9 * of this software and associated documentation files (the "Software"), to deal |
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10 * in the Software without restriction, including without limitation the rights |
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11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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12 * copies of the Software, and to permit persons to whom the Software is |
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13 * furnished to do so, subject to the following conditions: |
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14 * |
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15 * The above copyright notice and this permission notice shall be included in |
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16 * all copies or substantial portions of the Software. |
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17 * |
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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24 * SOFTWARE. */ |
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25 |
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26 #include "includes.h" |
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27 #include "algo.h" |
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28 #include "session.h" |
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29 #include "dbutil.h" |
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30 #include "kex.h" |
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31 #include "ltc_prng.h" |
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32 #include "ecc.h" |
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33 |
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34 /* This file (algo.c) organises the ciphers which can be used, and is used to |
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35 * decide which ciphers/hashes/compression/signing to use during key exchange*/ |
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36 |
502 | 37 static int void_cipher(const unsigned char* in, unsigned char* out, |
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38 unsigned long len, void* UNUSED(cipher_state)) { |
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39 if (in != out) { |
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40 memmove(out, in, len); |
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41 } |
502 | 42 return CRYPT_OK; |
43 } | |
44 | |
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45 static int void_start(int UNUSED(cipher), const unsigned char* UNUSED(IV), |
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46 const unsigned char* UNUSED(key), |
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47 int UNUSED(keylen), int UNUSED(num_rounds), void* UNUSED(cipher_state)) { |
502 | 48 return CRYPT_OK; |
49 } | |
50 | |
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51 /* Mappings for ciphers, parameters are |
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52 {&cipher_desc, keysize, blocksize} */ |
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53 |
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54 /* Remember to add new ciphers/hashes to regciphers/reghashes too */ |
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55 |
502 | 56 #ifdef DROPBEAR_AES256 |
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57 static const struct dropbear_cipher dropbear_aes256 = |
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58 {&aes_desc, 32, 16}; |
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59 #endif |
502 | 60 #ifdef DROPBEAR_AES128 |
227 | 61 static const struct dropbear_cipher dropbear_aes128 = |
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62 {&aes_desc, 16, 16}; |
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63 #endif |
502 | 64 #ifdef DROPBEAR_BLOWFISH |
227 | 65 static const struct dropbear_cipher dropbear_blowfish = |
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66 {&blowfish_desc, 16, 8}; |
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67 #endif |
502 | 68 #ifdef DROPBEAR_TWOFISH256 |
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69 static const struct dropbear_cipher dropbear_twofish256 = |
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70 {&twofish_desc, 32, 16}; |
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71 #endif |
502 | 72 #ifdef DROPBEAR_TWOFISH128 |
227 | 73 static const struct dropbear_cipher dropbear_twofish128 = |
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74 {&twofish_desc, 16, 16}; |
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75 #endif |
502 | 76 #ifdef DROPBEAR_3DES |
227 | 77 static const struct dropbear_cipher dropbear_3des = |
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78 {&des3_desc, 24, 8}; |
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79 #endif |
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80 |
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81 /* used to indicate no encryption, as defined in rfc2410 */ |
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82 const struct dropbear_cipher dropbear_nocipher = |
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83 {NULL, 16, 8}; |
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84 |
502 | 85 /* A few void* s are required to silence warnings |
86 * about the symmetric_CBC vs symmetric_CTR cipher_state pointer */ | |
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87 #ifdef DROPBEAR_ENABLE_CBC_MODE |
502 | 88 const struct dropbear_cipher_mode dropbear_mode_cbc = |
89 {(void*)cbc_start, (void*)cbc_encrypt, (void*)cbc_decrypt}; | |
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90 #endif /* DROPBEAR_ENABLE_CBC_MODE */ |
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91 |
502 | 92 const struct dropbear_cipher_mode dropbear_mode_none = |
93 {void_start, void_cipher, void_cipher}; | |
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94 |
502 | 95 #ifdef DROPBEAR_ENABLE_CTR_MODE |
96 /* a wrapper to make ctr_start and cbc_start look the same */ | |
97 static int dropbear_big_endian_ctr_start(int cipher, | |
98 const unsigned char *IV, | |
99 const unsigned char *key, int keylen, | |
100 int num_rounds, symmetric_CTR *ctr) { | |
101 return ctr_start(cipher, IV, key, keylen, num_rounds, CTR_COUNTER_BIG_ENDIAN, ctr); | |
102 } | |
103 const struct dropbear_cipher_mode dropbear_mode_ctr = | |
104 {(void*)dropbear_big_endian_ctr_start, (void*)ctr_encrypt, (void*)ctr_decrypt}; | |
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105 #endif /* DROPBEAR_ENABLE_CTR_MODE */ |
502 | 106 |
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107 /* Mapping of ssh hashes to libtomcrypt hashes, including keysize etc. |
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108 {&hash_desc, keysize, hashsize} */ |
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109 |
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110 #ifdef DROPBEAR_SHA1_HMAC |
227 | 111 static const struct dropbear_hash dropbear_sha1 = |
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112 {&sha1_desc, 20, 20}; |
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113 #endif |
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114 #ifdef DROPBEAR_SHA1_96_HMAC |
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115 static const struct dropbear_hash dropbear_sha1_96 = |
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116 {&sha1_desc, 20, 12}; |
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117 #endif |
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118 #ifdef DROPBEAR_SHA2_256_HMAC |
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119 static const struct dropbear_hash dropbear_sha2_256 = |
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120 {&sha256_desc, 32, 32}; |
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121 #endif |
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122 #ifdef DROPBEAR_SHA2_512_HMAC |
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123 static const struct dropbear_hash dropbear_sha2_512 = |
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124 {&sha512_desc, 64, 64}; |
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125 #endif |
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126 #ifdef DROPBEAR_MD5_HMAC |
227 | 127 static const struct dropbear_hash dropbear_md5 = |
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128 {&md5_desc, 16, 16}; |
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129 #endif |
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130 |
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131 const struct dropbear_hash dropbear_nohash = |
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132 {NULL, 16, 0}; /* used initially */ |
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133 |
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134 |
502 | 135 /* The following map ssh names to internal values. |
136 * The ordering here is important for the client - the first mode | |
137 * that is also supported by the server will get used. */ | |
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138 |
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139 algo_type sshciphers[] = { |
502 | 140 #ifdef DROPBEAR_ENABLE_CTR_MODE |
141 #ifdef DROPBEAR_AES128 | |
142 {"aes128-ctr", 0, &dropbear_aes128, 1, &dropbear_mode_ctr}, | |
143 #endif | |
144 #ifdef DROPBEAR_AES256 | |
145 {"aes256-ctr", 0, &dropbear_aes256, 1, &dropbear_mode_ctr}, | |
146 #endif | |
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147 #ifdef DROPBEAR_TWOFISH_CTR |
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148 /* twofish ctr is conditional as it hasn't been tested for interoperability, see options.h */ |
1012 | 149 #ifdef DROPBEAR_TWOFISH256 |
150 {"twofish256-ctr", 0, &dropbear_twofish256, 1, &dropbear_mode_ctr}, | |
151 #endif | |
152 #ifdef DROPBEAR_TWOFISH128 | |
153 {"twofish128-ctr", 0, &dropbear_twofish128, 1, &dropbear_mode_ctr}, | |
154 #endif | |
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155 #endif /* DROPBEAR_TWOFISH_CTR */ |
502 | 156 #endif /* DROPBEAR_ENABLE_CTR_MODE */ |
157 | |
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158 #ifdef DROPBEAR_ENABLE_CBC_MODE |
502 | 159 #ifdef DROPBEAR_AES128 |
160 {"aes128-cbc", 0, &dropbear_aes128, 1, &dropbear_mode_cbc}, | |
161 #endif | |
162 #ifdef DROPBEAR_AES256 | |
163 {"aes256-cbc", 0, &dropbear_aes256, 1, &dropbear_mode_cbc}, | |
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164 #endif |
502 | 165 #ifdef DROPBEAR_TWOFISH256 |
166 {"twofish256-cbc", 0, &dropbear_twofish256, 1, &dropbear_mode_cbc}, | |
167 {"twofish-cbc", 0, &dropbear_twofish256, 1, &dropbear_mode_cbc}, | |
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168 #endif |
502 | 169 #ifdef DROPBEAR_TWOFISH128 |
170 {"twofish128-cbc", 0, &dropbear_twofish128, 1, &dropbear_mode_cbc}, | |
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171 #endif |
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172 #ifdef DROPBEAR_3DES |
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173 {"3des-ctr", 0, &dropbear_3des, 1, &dropbear_mode_ctr}, |
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174 #endif |
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175 #ifdef DROPBEAR_3DES |
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176 {"3des-cbc", 0, &dropbear_3des, 1, &dropbear_mode_cbc}, |
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177 #endif |
502 | 178 #ifdef DROPBEAR_BLOWFISH |
179 {"blowfish-cbc", 0, &dropbear_blowfish, 1, &dropbear_mode_cbc}, | |
180 #endif | |
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181 #endif /* DROPBEAR_ENABLE_CBC_MODE */ |
252
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182 #ifdef DROPBEAR_NONE_CIPHER |
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183 {"none", 0, (void*)&dropbear_nocipher, 1, &dropbear_mode_none}, |
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184 #endif |
502 | 185 {NULL, 0, NULL, 0, NULL} |
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186 }; |
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187 |
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188 algo_type sshhashes[] = { |
1017 | 189 #ifdef DROPBEAR_SHA1_96_HMAC |
190 {"hmac-sha1-96", 0, &dropbear_sha1_96, 1, NULL}, | |
191 #endif | |
192 #ifdef DROPBEAR_SHA1_HMAC | |
193 {"hmac-sha1", 0, &dropbear_sha1, 1, NULL}, | |
194 #endif | |
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195 #ifdef DROPBEAR_SHA2_256_HMAC |
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196 {"hmac-sha2-256", 0, &dropbear_sha2_256, 1, NULL}, |
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197 #endif |
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198 #ifdef DROPBEAR_SHA2_512_HMAC |
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199 {"hmac-sha2-512", 0, &dropbear_sha2_512, 1, NULL}, |
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200 #endif |
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201 #ifdef DROPBEAR_MD5_HMAC |
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202 {"hmac-md5", 0, (void*)&dropbear_md5, 1, NULL}, |
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203 #endif |
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204 #ifdef DROPBEAR_NONE_INTEGRITY |
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205 {"none", 0, (void*)&dropbear_nohash, 1, NULL}, |
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206 #endif |
502 | 207 {NULL, 0, NULL, 0, NULL} |
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208 }; |
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209 |
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210 #ifndef DISABLE_ZLIB |
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211 algo_type ssh_compress[] = { |
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212 {"[email protected]", DROPBEAR_COMP_ZLIB_DELAY, NULL, 1, NULL}, |
502 | 213 {"zlib", DROPBEAR_COMP_ZLIB, NULL, 1, NULL}, |
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214 {"none", DROPBEAR_COMP_NONE, NULL, 1, NULL}, |
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215 {NULL, 0, NULL, 0, NULL} |
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216 }; |
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217 |
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218 algo_type ssh_delaycompress[] = { |
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219 {"[email protected]", DROPBEAR_COMP_ZLIB_DELAY, NULL, 1, NULL}, |
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220 {"none", DROPBEAR_COMP_NONE, NULL, 1, NULL}, |
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221 {NULL, 0, NULL, 0, NULL} |
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222 }; |
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223 #endif |
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224 |
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225 algo_type ssh_nocompress[] = { |
502 | 226 {"none", DROPBEAR_COMP_NONE, NULL, 1, NULL}, |
227 {NULL, 0, NULL, 0, NULL} | |
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228 }; |
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229 |
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230 algo_type sshhostkey[] = { |
795 | 231 #ifdef DROPBEAR_ECDSA |
232 #ifdef DROPBEAR_ECC_256 | |
233 {"ecdsa-sha2-nistp256", DROPBEAR_SIGNKEY_ECDSA_NISTP256, NULL, 1, NULL}, | |
234 #endif | |
235 #ifdef DROPBEAR_ECC_384 | |
236 {"ecdsa-sha2-nistp384", DROPBEAR_SIGNKEY_ECDSA_NISTP384, NULL, 1, NULL}, | |
237 #endif | |
238 #ifdef DROPBEAR_ECC_521 | |
239 {"ecdsa-sha2-nistp521", DROPBEAR_SIGNKEY_ECDSA_NISTP521, NULL, 1, NULL}, | |
240 #endif | |
241 #endif | |
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242 #ifdef DROPBEAR_RSA |
502 | 243 {"ssh-rsa", DROPBEAR_SIGNKEY_RSA, NULL, 1, NULL}, |
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244 #endif |
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245 #ifdef DROPBEAR_DSS |
502 | 246 {"ssh-dss", DROPBEAR_SIGNKEY_DSS, NULL, 1, NULL}, |
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247 #endif |
502 | 248 {NULL, 0, NULL, 0, NULL} |
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249 }; |
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250 |
848 | 251 static const struct dropbear_kex kex_dh_group1 = {DROPBEAR_KEX_NORMAL_DH, dh_p_1, DH_P_1_LEN, NULL, &sha1_desc }; |
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252 static const struct dropbear_kex kex_dh_group14_sha1 = {DROPBEAR_KEX_NORMAL_DH, dh_p_14, DH_P_14_LEN, NULL, &sha1_desc }; |
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253 static const struct dropbear_kex kex_dh_group14_sha256 = {DROPBEAR_KEX_NORMAL_DH, dh_p_14, DH_P_14_LEN, NULL, &sha256_desc }; |
756 | 254 |
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255 /* These can't be const since dropbear_ecc_fill_dp() fills out |
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256 ecc_curve at runtime */ |
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257 #ifdef DROPBEAR_ECDH |
756 | 258 #ifdef DROPBEAR_ECC_256 |
848 | 259 static struct dropbear_kex kex_ecdh_nistp256 = {DROPBEAR_KEX_ECDH, NULL, 0, &ecc_curve_nistp256, &sha256_desc }; |
756 | 260 #endif |
261 #ifdef DROPBEAR_ECC_384 | |
848 | 262 static struct dropbear_kex kex_ecdh_nistp384 = {DROPBEAR_KEX_ECDH, NULL, 0, &ecc_curve_nistp384, &sha384_desc }; |
756 | 263 #endif |
264 #ifdef DROPBEAR_ECC_521 | |
848 | 265 static struct dropbear_kex kex_ecdh_nistp521 = {DROPBEAR_KEX_ECDH, NULL, 0, &ecc_curve_nistp521, &sha512_desc }; |
756 | 266 #endif |
848 | 267 #endif /* DROPBEAR_ECDH */ |
756 | 268 |
848 | 269 #ifdef DROPBEAR_CURVE25519 |
270 /* Referred to directly */ | |
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271 static const struct dropbear_kex kex_curve25519 = {DROPBEAR_KEX_CURVE25519, NULL, 0, NULL, &sha256_desc }; |
848 | 272 #endif |
756 | 273 |
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274 algo_type sshkex[] = { |
848 | 275 #ifdef DROPBEAR_CURVE25519 |
276 {"[email protected]", 0, &kex_curve25519, 1, NULL}, | |
277 #endif | |
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278 #ifdef DROPBEAR_ECDH |
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279 #ifdef DROPBEAR_ECC_521 |
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280 {"ecdh-sha2-nistp521", 0, &kex_ecdh_nistp521, 1, NULL}, |
756 | 281 #endif |
282 #ifdef DROPBEAR_ECC_384 | |
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283 {"ecdh-sha2-nistp384", 0, &kex_ecdh_nistp384, 1, NULL}, |
756 | 284 #endif |
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285 #ifdef DROPBEAR_ECC_256 |
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286 {"ecdh-sha2-nistp256", 0, &kex_ecdh_nistp256, 1, NULL}, |
756 | 287 #endif |
288 #endif | |
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289 {"diffie-hellman-group14-sha256", 0, &kex_dh_group14_sha256, 1, NULL}, |
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290 {"diffie-hellman-group14-sha1", 0, &kex_dh_group14_sha1, 1, NULL}, |
756 | 291 {"diffie-hellman-group1-sha1", 0, &kex_dh_group1, 1, NULL}, |
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292 #ifdef USE_KEXGUESS2 |
740 | 293 {KEXGUESS2_ALGO_NAME, KEXGUESS2_ALGO_ID, NULL, 1, NULL}, |
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294 #endif |
502 | 295 {NULL, 0, NULL, 0, NULL} |
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296 }; |
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297 |
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298 /* algolen specifies the length of algo, algos is our local list to match |
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299 * against. |
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300 * Returns DROPBEAR_SUCCESS if we have a match for algo, DROPBEAR_FAILURE |
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301 * otherwise */ |
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302 int have_algo(char* algo, size_t algolen, algo_type algos[]) { |
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303 |
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304 int i; |
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305 |
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306 for (i = 0; algos[i].name != NULL; i++) { |
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307 if (strlen(algos[i].name) == algolen |
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308 && (strncmp(algos[i].name, algo, algolen) == 0)) { |
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309 return DROPBEAR_SUCCESS; |
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310 } |
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311 } |
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312 |
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313 return DROPBEAR_FAILURE; |
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314 } |
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315 |
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316 /* Output a comma separated list of algorithms to a buffer */ |
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317 void buf_put_algolist(buffer * buf, algo_type localalgos[]) { |
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318 |
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319 unsigned int i, len; |
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320 unsigned int donefirst = 0; |
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321 buffer *algolist = NULL; |
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322 |
848 | 323 algolist = buf_new(200); |
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324 for (i = 0; localalgos[i].name != NULL; i++) { |
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325 if (localalgos[i].usable) { |
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326 if (donefirst) |
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327 buf_putbyte(algolist, ','); |
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diff
changeset
|
328 donefirst = 1; |
4
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parents:
diff
changeset
|
329 len = strlen(localalgos[i].name); |
1106
2052b53d3034
Turn Algo_Type's name attribute into const char *
Gaël PORTAY <gael.portay@gmail.com>
parents:
1094
diff
changeset
|
330 buf_putbytes(algolist, (const unsigned char *) localalgos[i].name, len); |
4
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331 } |
fe6bca95afa7
Makefile.in contains updated files required
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parents:
diff
changeset
|
332 } |
1122
aaf576b27a10
Merge pull request #13 from gazoo74/fix-warnings
Matt Johnston <matt@ucc.asn.au>
diff
changeset
|
333 buf_putstring(buf, (const char*)algolist->data, algolist->len); |
238
e923801a7678
use a buffer rather than raw char array for creating
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diff
changeset
|
334 buf_free(algolist); |
4
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Makefile.in contains updated files required
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parents:
diff
changeset
|
335 } |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
336 |
741
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337 /* match the first algorithm in the comma-separated list in buf which is |
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diff
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|
338 * also in localalgos[], or return NULL on failure. |
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diff
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339 * (*goodguess) is set to 1 if the preferred client/server algos match, |
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diff
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340 * 0 otherwise. This is used for checking if the kexalgo/hostkeyalgos are |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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diff
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341 * guessed correctly */ |
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Get rid of client/server specific buf_match_algo, use single
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diff
changeset
|
342 algo_type * buf_match_algo(buffer* buf, algo_type localalgos[], |
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Get rid of client/server specific buf_match_algo, use single
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diff
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|
343 enum kexguess2_used *kexguess2, int *goodguess) |
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Get rid of client/server specific buf_match_algo, use single
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344 { |
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Get rid of client/server specific buf_match_algo, use single
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diff
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|
345 |
1094
c45d65392c1a
Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents:
1038
diff
changeset
|
346 char * algolist = NULL; |
c45d65392c1a
Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents:
1038
diff
changeset
|
347 const char *remotenames[MAX_PROPOSED_ALGO], *localnames[MAX_PROPOSED_ALGO]; |
741
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348 unsigned int len; |
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diff
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349 unsigned int remotecount, localcount, clicount, servcount, i, j; |
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Get rid of client/server specific buf_match_algo, use single
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diff
changeset
|
350 algo_type * ret = NULL; |
1094
c45d65392c1a
Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents:
1038
diff
changeset
|
351 const char **clinames, **servnames; |
741
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Get rid of client/server specific buf_match_algo, use single
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diff
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352 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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diff
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353 if (goodguess) { |
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Get rid of client/server specific buf_match_algo, use single
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354 *goodguess = 0; |
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Get rid of client/server specific buf_match_algo, use single
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diff
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355 } |
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Get rid of client/server specific buf_match_algo, use single
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diff
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356 |
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Get rid of client/server specific buf_match_algo, use single
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diff
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357 /* get the comma-separated list from the buffer ie "algo1,algo2,algo3" */ |
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Get rid of client/server specific buf_match_algo, use single
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diff
changeset
|
358 algolist = buf_getstring(buf, &len); |
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Get rid of client/server specific buf_match_algo, use single
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diff
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|
359 TRACE(("buf_match_algo: %s", algolist)) |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
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diff
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360 if (len > MAX_PROPOSED_ALGO*(MAX_NAME_LEN+1)) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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diff
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361 goto out; |
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Get rid of client/server specific buf_match_algo, use single
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740
diff
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|
362 } |
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Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
363 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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diff
changeset
|
364 /* remotenames will contain a list of the strings parsed out */ |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
365 /* We will have at least one string (even if it's just "") */ |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
366 remotenames[0] = algolist; |
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Get rid of client/server specific buf_match_algo, use single
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diff
changeset
|
367 remotecount = 1; |
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Get rid of client/server specific buf_match_algo, use single
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diff
changeset
|
368 for (i = 0; i < len; i++) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
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diff
changeset
|
369 if (algolist[i] == '\0') { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
370 /* someone is trying something strange */ |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
371 goto out; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
372 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
373 if (algolist[i] == ',') { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
374 algolist[i] = '\0'; |
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Get rid of client/server specific buf_match_algo, use single
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parents:
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diff
changeset
|
375 remotenames[remotecount] = &algolist[i+1]; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
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diff
changeset
|
376 remotecount++; |
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Get rid of client/server specific buf_match_algo, use single
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diff
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|
377 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
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diff
changeset
|
378 if (remotecount >= MAX_PROPOSED_ALGO) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
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379 break; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
380 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
381 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
382 if (kexguess2 && *kexguess2 == KEXGUESS2_LOOK) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
383 for (i = 0; i < remotecount; i++) |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
384 { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
385 if (strcmp(remotenames[i], KEXGUESS2_ALGO_NAME) == 0) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
386 *kexguess2 = KEXGUESS2_YES; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
387 break; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
388 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
389 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
390 if (*kexguess2 == KEXGUESS2_LOOK) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
391 *kexguess2 = KEXGUESS2_NO; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
392 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
393 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
394 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
395 for (i = 0; localalgos[i].name != NULL; i++) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
396 if (localalgos[i].usable) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
397 localnames[i] = localalgos[i].name; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
398 } else { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
399 localnames[i] = NULL; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
400 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
401 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
402 localcount = i; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
403 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
404 if (IS_DROPBEAR_SERVER) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
405 clinames = remotenames; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
406 clicount = remotecount; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
407 servnames = localnames; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
408 servcount = localcount; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
409 } else { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
410 clinames = localnames; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
411 clicount = localcount; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
412 servnames = remotenames; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
413 servcount = remotecount; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
414 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
415 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
416 /* iterate and find the first match */ |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
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parents:
740
diff
changeset
|
417 for (i = 0; i < clicount; i++) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
418 for (j = 0; j < servcount; j++) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
419 if (!(servnames[j] && clinames[i])) { |
857 | 420 /* unusable algos are NULL */ |
741
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
421 continue; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
422 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
423 if (strcmp(servnames[j], clinames[i]) == 0) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
424 /* set if it was a good guess */ |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
425 if (goodguess && kexguess2) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
426 if (*kexguess2 == KEXGUESS2_YES) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
427 if (i == 0) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
428 *goodguess = 1; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
429 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
430 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
431 } else { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
432 if (i == 0 && j == 0) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
433 *goodguess = 1; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
434 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
435 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
436 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
437 /* set the algo to return */ |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
438 if (IS_DROPBEAR_SERVER) { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
439 ret = &localalgos[j]; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
440 } else { |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
441 ret = &localalgos[i]; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
442 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
443 goto out; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
444 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
445 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
446 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
447 |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
448 out: |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
449 m_free(algolist); |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
450 return ret; |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
451 } |
eafdf8b363f5
Get rid of client/server specific buf_match_algo, use single
Matt Johnston <matt@ucc.asn.au>
parents:
740
diff
changeset
|
452 |
686
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
453 #ifdef DROPBEAR_NONE_CIPHER |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
454 |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
455 void |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
456 set_algo_usable(algo_type algos[], const char * algo_name, int usable) |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
457 { |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
458 algo_type *a; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
459 for (a = algos; a->name != NULL; a++) |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
460 { |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
461 if (strcmp(a->name, algo_name) == 0) |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
462 { |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
463 a->usable = usable; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
464 return; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
465 } |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
466 } |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
467 } |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
468 |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
469 int |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
470 get_algo_usable(algo_type algos[], const char * algo_name) |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
471 { |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
472 algo_type *a; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
473 for (a = algos; a->name != NULL; a++) |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
474 { |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
475 if (strcmp(a->name, algo_name) == 0) |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
476 { |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
477 return a->usable; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
478 } |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
479 } |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
480 return 0; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
481 } |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
482 |
857 | 483 #endif /* DROPBEAR_NONE_CIPHER */ |
686
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
484 |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
485 #ifdef ENABLE_USER_ALGO_LIST |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
486 |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
487 char * |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
488 algolist_string(algo_type algos[]) |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
489 { |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
490 char *ret_list; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
491 buffer *b = buf_new(200); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
492 buf_put_algolist(b, algos); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
493 buf_setpos(b, b->len); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
494 buf_putbyte(b, '\0'); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
495 buf_setpos(b, 4); |
1094
c45d65392c1a
Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents:
1038
diff
changeset
|
496 ret_list = m_strdup((const char *) buf_getptr(b, b->len - b->pos)); |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
497 buf_free(b); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
498 return ret_list; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
499 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
500 |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
501 static algo_type* |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
502 check_algo(const char* algo_name, algo_type *algos) |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
503 { |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
504 algo_type *a; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
505 for (a = algos; a->name != NULL; a++) |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
506 { |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
507 if (strcmp(a->name, algo_name) == 0) |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
508 { |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
509 return a; |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
510 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
511 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
512 |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
513 return NULL; |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
514 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
515 |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
516 static void |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
517 try_add_algo(const char *algo_name, algo_type *algos, |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
518 const char *algo_desc, algo_type * new_algos, int *num_ret) |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
519 { |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
520 algo_type *match_algo = check_algo(algo_name, algos); |
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
521 if (!match_algo) |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
522 { |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
523 dropbear_log(LOG_WARNING, "This Dropbear program does not support '%s' %s algorithm", algo_name, algo_desc); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
524 return; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
525 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
526 |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
527 new_algos[*num_ret] = *match_algo; |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
528 (*num_ret)++; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
529 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
530 |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
531 /* Checks a user provided comma-separated algorithm list for available |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
532 * options. Any that are not acceptable are removed in-place. Returns the |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
533 * number of valid algorithms. */ |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
534 int |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
535 check_user_algos(const char* user_algo_list, algo_type * algos, |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
536 const char *algo_desc) |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
537 { |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
538 algo_type new_algos[MAX_PROPOSED_ALGO]; |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
539 /* this has two passes. first we sweep through the given list of |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
540 * algorithms and mark them as usable=2 in the algo_type[] array... */ |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
541 int num_ret = 0; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
542 char *work_list = m_strdup(user_algo_list); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
543 char *last_name = work_list; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
544 char *c; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
545 for (c = work_list; *c; c++) |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
546 { |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
547 if (*c == ',') |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
548 { |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
549 *c = '\0'; |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
550 try_add_algo(last_name, algos, algo_desc, new_algos, &num_ret); |
686
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
551 c++; |
983a817f8e41
- Only request "none" cipher after auth has succeeded
Matt Johnston <matt@ucc.asn.au>
parents:
684
diff
changeset
|
552 last_name = c; |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
553 } |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
554 } |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
diff
changeset
|
555 try_add_algo(last_name, algos, algo_desc, new_algos, &num_ret); |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
diff
changeset
|
556 m_free(work_list); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
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changeset
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557 |
683
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
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558 new_algos[num_ret].name = NULL; |
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
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559 |
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
682
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560 /* Copy one more as a blank delimiter */ |
63f8d6c469cf
ENABLE_USER_ALGO_LIST should work for the client
Matt Johnston <matt@ucc.asn.au>
parents:
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561 memcpy(algos, new_algos, sizeof(*new_algos) * (num_ret+1)); |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
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562 return num_ret; |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
595
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563 } |
857 | 564 #endif /* ENABLE_USER_ALGO_LIST */ |