1 | //hash.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | * NOTE for everyone want's to change something and send patches: |
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25 | * read README and HACKING! There a addition information on |
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26 | * the license of this document you need to read before you send |
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27 | * any patches. |
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28 | * |
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29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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30 | * or libpulse*: |
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31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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32 | * and are therefore GPL. Because of this it may be illigal to use |
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33 | * them with any software that uses libesd, libartsc or libpulse*. |
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34 | */ |
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35 | |
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36 | #include "libroar.h" |
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37 | |
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38 | #ifdef ROAR_HAVE_LIBGCRYPT |
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39 | #include <gcrypt.h> |
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40 | #endif |
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41 | |
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42 | struct roar_hash_state { |
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43 | struct roar_hash_cmds * cmds; |
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44 | void * state; |
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45 | }; |
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46 | |
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47 | static const struct hashes { |
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48 | const int id; |
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49 | const char * name; |
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50 | const ssize_t dlen; |
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51 | } _libroar_hashes[] = { |
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52 | /* |
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53 | grep '^ +HT_' doc/new-cmds | sed 's/ *#(.*)$//; s/^ +HT_//; s/ *=.*$//' | while read n; do printf " {ROAR_HT_%-12s \"%-12s -1 },\n" $n, $n\",; done |
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54 | */ |
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55 | {ROAR_HT_NONE, "NONE", -1 }, |
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56 | {ROAR_HT_MD5, "MD5", 16 }, |
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57 | {ROAR_HT_SHA1, "SHA1", 20 }, |
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58 | {ROAR_HT_RIPEMD160, "RIPEMD160", 20 }, |
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59 | {ROAR_HT_MD2, "MD2", -1 }, |
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60 | {ROAR_HT_TIGER, "TIGER", 24 }, |
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61 | {ROAR_HT_HAVAL, "HAVAL", -1 }, |
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62 | {ROAR_HT_SHA256, "SHA256", 32 }, |
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63 | {ROAR_HT_SHA384, "SHA384", 48 }, |
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64 | {ROAR_HT_SHA512, "SHA512", 64 }, |
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65 | {ROAR_HT_SHA224, "SHA224", 28 }, |
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66 | {ROAR_HT_MD4, "MD4", 16 }, |
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67 | {ROAR_HT_CRC32, "CRC32", 4 }, |
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68 | {ROAR_HT_RFC1510, "RFC1510", 4 }, |
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69 | {ROAR_HT_RFC2440, "RFC2440", 3 }, |
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70 | {ROAR_HT_WHIRLPOOL, "WHIRLPOOL", 64 }, |
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71 | {ROAR_HT_UUID, "UUID", 16 }, |
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72 | {ROAR_HT_GTN8, "GTN8", 1 }, |
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73 | {ROAR_HT_GTN16, "GTN16", 2 }, |
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74 | {ROAR_HT_GTN32, "GTN32", 4 }, |
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75 | {ROAR_HT_GTN64, "GTN64", 8 }, |
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76 | {ROAR_HT_CLIENTID, "CLIENTID", -1 }, |
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77 | {ROAR_HT_STREAMID, "STREAMID", -1 }, |
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78 | {ROAR_HT_SOURCEID, "SOURCEID", -1 }, |
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79 | {ROAR_HT_SAMPLEID, "SAMPLEID", -1 }, |
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80 | {ROAR_HT_MIXERID, "MIXERID", -1 }, |
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81 | {ROAR_HT_BRIDGEID, "BRIDGEID", -1 }, |
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82 | {ROAR_HT_LISTENID, "LISTENID", -1 }, |
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83 | {ROAR_HT_ACTIONID, "ACTIONID", -1 }, |
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84 | {ROAR_HT_MSGQUEUEID, "MSGQUEUEID", -1 }, |
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85 | {ROAR_HT_MSGBUSID, "MSGBUSID", -1 }, |
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86 | {ROAR_HT_GTIN8, "GTIN8", 4 }, |
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87 | {ROAR_HT_GTIN13, "GTIN13", 8 }, |
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88 | {ROAR_HT_ISBN10, "ISBN10", 8 }, |
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89 | {ROAR_HT_ISBN13, "ISBN13", 8 }, |
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90 | {-1, NULL} |
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91 | }; |
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92 | |
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93 | static struct roar_hash_cmds _libroar_hash_cmds[] = { |
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94 | {ROAR_HT_TIGER, sizeof(struct roar_hash_tiger), 512, |
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95 | (int (*)(void *))roar_hash_tiger_init, (int (*)(void *))roar_hash_tiger_uninit, |
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96 | (int (*)(void *, void *, size_t *))roar_hash_tiger_get_digest, |
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97 | (int (*)(void *, const void *))roar_hash_tiger_proc_block, |
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98 | (int (*)(void *, const void *, size_t))roar_hash_tiger_proc |
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99 | }, |
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100 | {ROAR_HT_RFC2440, sizeof(uint32_t), -1, |
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101 | roar_hash_crc24_init, NULL, |
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102 | roar_hash_crc24_digest, NULL, roar_hash_crc24_proc |
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103 | }, |
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104 | {-1, -1, -1, NULL, NULL, NULL, NULL, NULL} |
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105 | }; |
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106 | |
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107 | static struct roar_hash_cmds * roar_ht2cmds(const int ht) { |
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108 | size_t i; |
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109 | |
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110 | for(i = 0; _libroar_hash_cmds[i].algo != -1; i++) |
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111 | if ( _libroar_hash_cmds[i].algo == ht ) |
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112 | return &(_libroar_hash_cmds[i]); |
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113 | |
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114 | return NULL; |
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115 | } |
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116 | |
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117 | static inline int roar_ht2gcrypt_tested (const int ht) { |
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118 | #ifdef ROAR_HAVE_LIBGCRYPT |
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119 | const char * name; |
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120 | |
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121 | if ( ht > 512 ) |
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122 | return -1; |
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123 | |
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124 | // test the algo: |
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125 | name = gcry_md_algo_name(ht); |
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126 | |
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127 | if ( name == NULL ) |
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128 | return -1; |
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129 | |
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130 | if ( *name == 0 ) |
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131 | return -1; |
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132 | |
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133 | return ht; |
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134 | #else |
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135 | return -1; |
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136 | #endif |
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137 | } |
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138 | |
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139 | const char * roar_ht2str (const int ht) { |
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140 | int i; |
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141 | |
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142 | for (i = 0; _libroar_hashes[i].id != -1; i++) |
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143 | if ( _libroar_hashes[i].id == ht ) |
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144 | return _libroar_hashes[i].name; |
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145 | |
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146 | return NULL; |
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147 | } |
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148 | |
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149 | int roar_str2ht (const char * ht) { |
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150 | int i; |
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151 | |
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152 | for (i = 0; _libroar_hashes[i].id != -1; i++) |
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153 | if ( !strcasecmp(_libroar_hashes[i].name, ht) ) |
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154 | return _libroar_hashes[i].id; |
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155 | |
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156 | return -1; |
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157 | } |
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158 | |
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159 | ssize_t roar_ht_digestlen (const int ht) { |
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160 | int i; |
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161 | |
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162 | for (i = 0; _libroar_hashes[i].id != -1; i++) |
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163 | if ( _libroar_hashes[i].id == ht ) |
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164 | return _libroar_hashes[i].dlen; |
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165 | |
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166 | return -1; |
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167 | } |
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168 | |
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169 | int roar_ht_is_supported(const int ht) { |
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170 | roar_crypto_init(); |
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171 | |
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172 | if ( roar_ht2cmds(ht) != NULL ) |
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173 | return 1; |
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174 | |
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175 | #ifdef ROAR_HAVE_LIBGCRYPT |
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176 | if ( roar_ht2gcrypt_tested(ht) == -1 ) |
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177 | return 0; |
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178 | |
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179 | return 1; |
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180 | #else |
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181 | return 0; |
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182 | #endif |
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183 | } |
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184 | |
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185 | struct roar_hash_state * roar_hash_new(int algo) { |
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186 | struct roar_hash_cmds * cmds = roar_ht2cmds(algo); |
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187 | struct roar_hash_state * self; |
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188 | |
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189 | if ( cmds == NULL ) |
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190 | return NULL; |
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191 | |
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192 | self = roar_mm_malloc(sizeof(struct roar_hash_state)); |
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193 | |
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194 | if ( self == NULL ) |
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195 | return NULL; |
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196 | |
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197 | memset(self, 0, sizeof(struct roar_hash_state)); |
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198 | |
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199 | self->cmds = cmds; |
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200 | |
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201 | self->state = roar_mm_malloc(cmds->statelen); |
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202 | |
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203 | if ( self->state == NULL ) { |
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204 | roar_mm_free(self); |
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205 | return NULL; |
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206 | } |
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207 | |
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208 | memset(self->state, 0, cmds->statelen); |
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209 | |
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210 | if ( cmds->init != NULL ) { |
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211 | if ( cmds->init(self->state) == -1 ) { |
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212 | roar_mm_free(self->state); |
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213 | roar_mm_free(self); |
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214 | return NULL; |
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215 | } |
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216 | } |
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217 | |
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218 | return self; |
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219 | } |
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220 | |
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221 | int roar_hash_free(struct roar_hash_state * state) { |
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222 | int ret = 0; |
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223 | |
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224 | if ( state == NULL ) |
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225 | return -1; |
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226 | |
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227 | if ( state->cmds->uninit != NULL ) |
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228 | ret = state->cmds->uninit(state->state); |
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229 | |
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230 | roar_mm_free(state->state); |
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231 | roar_mm_free(state); |
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232 | |
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233 | return ret; |
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234 | } |
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235 | |
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236 | int roar_hash_digest(struct roar_hash_state * state, void * digest, size_t * len) { |
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237 | if ( state == NULL ) |
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238 | return -1; |
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239 | |
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240 | if ( state->cmds->digest == NULL ) |
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241 | return -1; |
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242 | |
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243 | return state->cmds->digest(state->state, digest, len); |
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244 | } |
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245 | |
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246 | int roar_hash_proc(struct roar_hash_state * state, const void * data, size_t len) { |
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247 | if ( state == NULL ) |
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248 | return -1; |
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249 | |
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250 | if ( state->cmds->proc == NULL ) |
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251 | return -1; |
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252 | |
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253 | return state->cmds->proc(state->state, data, len); |
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254 | } |
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255 | |
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256 | int roar_hash_buffer(void * digest, const void * data, size_t datalen, int algo) { |
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257 | roar_crypto_init(); |
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258 | |
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259 | return roar_hash_salted_buffer(digest, data, datalen, algo, NULL, 0); |
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260 | } |
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261 | |
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262 | #ifdef ROAR_HAVE_LIBGCRYPT |
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263 | static inline int roar_hash_salted_buffer_gcrypt(void * digest, const void * data, size_t datalen, int algo, const void * salt, size_t saltlen) { |
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264 | gcry_md_hd_t hdl; |
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265 | |
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266 | roar_crypto_init(); |
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267 | |
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268 | algo = roar_ht2gcrypt_tested(algo); |
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269 | if ( algo == -1 ) |
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270 | return -1; |
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271 | |
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272 | |
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273 | if ( salt == NULL ) { |
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274 | // optimized for unsalted: |
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275 | gcry_md_hash_buffer(algo, digest, data, datalen); |
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276 | return 0; |
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277 | } else { |
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278 | if ( gcry_md_open(&hdl, algo, 0) != 0 ) |
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279 | return -1; |
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280 | |
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281 | gcry_md_write(hdl, data, datalen); |
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282 | gcry_md_write(hdl, salt, saltlen); |
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283 | |
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284 | memcpy(digest, gcry_md_read(hdl, algo), gcry_md_get_algo_dlen(algo)); |
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285 | |
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286 | gcry_md_close(hdl); |
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287 | } |
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288 | |
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289 | return 0; |
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290 | } |
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291 | #endif |
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292 | |
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293 | int roar_hash_salted_buffer(void * digest, const void * data, size_t datalen, int algo, const void * salt, size_t saltlen) { |
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294 | struct roar_hash_state * state; |
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295 | size_t len; |
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296 | int ret = 0; |
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297 | |
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298 | ROAR_DBG("roar_hash_salted_buffer(digest=%p, data=%p, datalen=%llu, algo=%i, salt=%p, saltlen=%llu) = ?", digest, data, (unsigned long long int)datalen, algo, salt, (unsigned long long int)saltlen); |
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299 | |
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300 | if ( digest == NULL || data == NULL ) |
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301 | return -1; |
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302 | |
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303 | len = roar_ht_digestlen(algo); |
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304 | if ( len == -1 ) |
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305 | return -1; |
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306 | |
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307 | if ( (state = roar_hash_new(algo)) != NULL ) { |
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308 | ROAR_DBG("roar_hash_salted_buffer(*): ret=%i", ret); |
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309 | |
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310 | if ( roar_hash_proc(state, data, datalen) == -1 ) |
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311 | ret = -1; |
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312 | |
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313 | ROAR_DBG("roar_hash_salted_buffer(*): ret=%i", ret); |
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314 | |
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315 | if ( saltlen != 0 ) |
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316 | if ( roar_hash_proc(state, salt, saltlen) == -1 ) |
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317 | ret = -1; |
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318 | |
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319 | ROAR_DBG("roar_hash_salted_buffer(*): ret=%i", ret); |
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320 | |
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321 | if ( roar_hash_digest(state, digest, &len) == -1 ) |
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322 | ret = -1; |
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323 | |
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324 | ROAR_DBG("roar_hash_salted_buffer(*): ret=%i", ret); |
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325 | |
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326 | if ( roar_hash_free(state) == -1 ) |
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327 | ret = -1; |
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328 | |
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329 | ROAR_DBG("roar_hash_salted_buffer(*): ret=%i", ret); |
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330 | |
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331 | return ret; |
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332 | } |
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333 | |
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334 | ROAR_DBG("roar_hash_salted_buffer(*): state=%p", state); |
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335 | |
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336 | #ifdef ROAR_HAVE_LIBGCRYPT |
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337 | return roar_hash_salted_buffer_gcrypt(digest, data, datalen, algo, salt, saltlen); |
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338 | #else |
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339 | return -1; |
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340 | #endif |
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341 | } |
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342 | |
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343 | //ll |
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