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 | static const struct hashes { |
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43 | const int id; |
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44 | const char * name; |
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45 | const ssize_t dlen; |
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46 | } _libroar_hashes[] = { |
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47 | /* |
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48 | 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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49 | */ |
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50 | {ROAR_HT_NONE, "NONE", -1 }, |
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51 | {ROAR_HT_MD5, "MD5", 16 }, |
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52 | {ROAR_HT_SHA1, "SHA1", 20 }, |
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53 | {ROAR_HT_RIPEMD160, "RIPEMD160", 20 }, |
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54 | {ROAR_HT_MD2, "MD2", -1 }, |
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55 | {ROAR_HT_TIGER, "TIGER", 24 }, |
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56 | {ROAR_HT_HAVAL, "HAVAL", -1 }, |
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57 | {ROAR_HT_SHA256, "SHA256", 32 }, |
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58 | {ROAR_HT_SHA384, "SHA384", 48 }, |
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59 | {ROAR_HT_SHA512, "SHA512", 64 }, |
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60 | {ROAR_HT_SHA224, "SHA224", 28 }, |
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61 | {ROAR_HT_MD4, "MD4", 16 }, |
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62 | {ROAR_HT_CRC32, "CRC32", 4 }, |
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63 | {ROAR_HT_RFC1510, "RFC1510", 4 }, |
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64 | {ROAR_HT_RFC2440, "RFC2440", 3 }, |
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65 | {ROAR_HT_WHIRLPOOL, "WHIRLPOOL", 64 }, |
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66 | {ROAR_HT_UUID, "UUID", 16 }, |
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67 | {ROAR_HT_GTN8, "GTN8", 1 }, |
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68 | {ROAR_HT_GTN16, "GTN16", 2 }, |
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69 | {ROAR_HT_GTN32, "GTN32", 4 }, |
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70 | {ROAR_HT_GTN64, "GTN64", 8 }, |
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71 | {ROAR_HT_CLIENTID, "CLIENTID", -1 }, |
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72 | {ROAR_HT_STREAMID, "STREAMID", -1 }, |
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73 | {ROAR_HT_SOURCEID, "SOURCEID", -1 }, |
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74 | {ROAR_HT_SAMPLEID, "SAMPLEID", -1 }, |
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75 | {ROAR_HT_MIXERID, "MIXERID", -1 }, |
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76 | {ROAR_HT_BRIDGEID, "BRIDGEID", -1 }, |
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77 | {ROAR_HT_LISTENID, "LISTENID", -1 }, |
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78 | {ROAR_HT_ACTIONID, "ACTIONID", -1 }, |
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79 | {ROAR_HT_MSGQUEUEID, "MSGQUEUEID", -1 }, |
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80 | {ROAR_HT_MSGBUSID, "MSGBUSID", -1 }, |
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81 | {ROAR_HT_GTIN8, "GTIN8", 4 }, |
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82 | {ROAR_HT_GTIN13, "GTIN13", 8 }, |
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83 | {ROAR_HT_ISBN10, "ISBN10", 8 }, |
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84 | {ROAR_HT_ISBN13, "ISBN13", 8 }, |
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85 | {-1, NULL} |
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86 | }; |
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87 | |
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88 | static inline int roar_ht2gcrypt_tested (const int ht) { |
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89 | #ifdef ROAR_HAVE_LIBGCRYPT |
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90 | const char * name; |
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91 | |
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92 | if ( ht > 512 ) |
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93 | return -1; |
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94 | |
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95 | // test the algo: |
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96 | name = gcry_md_algo_name(ht); |
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97 | |
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98 | if ( name == NULL ) |
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99 | return -1; |
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100 | |
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101 | if ( *name == 0 ) |
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102 | return -1; |
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103 | |
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104 | return ht; |
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105 | #else |
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106 | return -1; |
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107 | #endif |
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108 | } |
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109 | |
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110 | const char * roar_ht2str (const int ht) { |
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111 | int i; |
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112 | |
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113 | for (i = 0; _libroar_hashes[i].id != -1; i++) |
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114 | if ( _libroar_hashes[i].id == ht ) |
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115 | return _libroar_hashes[i].name; |
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116 | |
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117 | return NULL; |
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118 | } |
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119 | |
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120 | int roar_str2ht (const char * ht) { |
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121 | int i; |
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122 | |
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123 | for (i = 0; _libroar_hashes[i].id != -1; i++) |
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124 | if ( !strcasecmp(_libroar_hashes[i].name, ht) ) |
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125 | return _libroar_hashes[i].id; |
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126 | |
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127 | return -1; |
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128 | } |
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129 | |
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130 | ssize_t roar_ht_digestlen (const int ht) { |
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131 | int i; |
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132 | |
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133 | for (i = 0; _libroar_hashes[i].id != -1; i++) |
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134 | if ( _libroar_hashes[i].id == ht ) |
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135 | return _libroar_hashes[i].dlen; |
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136 | |
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137 | return -1; |
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138 | } |
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139 | |
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140 | int roar_ht_is_supported(const int ht) { |
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141 | roar_crypto_init(); |
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142 | |
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143 | #ifdef ROAR_HAVE_LIBGCRYPT |
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144 | if ( roar_ht2gcrypt_tested(ht) == -1 ) |
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145 | return 0; |
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146 | |
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147 | return 1; |
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148 | #else |
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149 | return 0; |
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150 | #endif |
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151 | } |
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152 | |
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153 | int roar_hash_buffer(void * digest, const void * data, size_t datalen, int algo) { |
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154 | roar_crypto_init(); |
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155 | |
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156 | return roar_hash_salted_buffer(digest, data, datalen, algo, NULL, 0); |
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157 | } |
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158 | |
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159 | #ifdef ROAR_HAVE_LIBGCRYPT |
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160 | 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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161 | gcry_md_hd_t hdl; |
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162 | |
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163 | roar_crypto_init(); |
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164 | |
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165 | algo = roar_ht2gcrypt_tested(algo); |
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166 | if ( algo == -1 ) |
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167 | return -1; |
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168 | |
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169 | |
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170 | if ( salt == NULL ) { |
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171 | // optimized for unsalted: |
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172 | gcry_md_hash_buffer(algo, digest, data, datalen); |
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173 | return 0; |
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174 | } else { |
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175 | if ( gcry_md_open(&hdl, algo, 0) != 0 ) |
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176 | return -1; |
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177 | |
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178 | gcry_md_write(hdl, data, datalen); |
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179 | gcry_md_write(hdl, salt, saltlen); |
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180 | |
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181 | memcpy(digest, gcry_md_read(hdl, algo), gcry_md_get_algo_dlen(algo)); |
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182 | |
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183 | gcry_md_close(hdl); |
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184 | } |
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185 | |
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186 | return 0; |
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187 | } |
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188 | #endif |
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189 | |
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190 | 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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191 | if ( digest == NULL || data == NULL ) |
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192 | return -1; |
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193 | |
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194 | #ifdef ROAR_HAVE_LIBGCRYPT |
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195 | return roar_hash_salted_buffer_gcrypt(digest, data, datalen, algo, salt, saltlen); |
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196 | #else |
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197 | return -1; |
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198 | #endif |
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199 | } |
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200 | |
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201 | //ll |
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