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1 /* ==================================================================== |
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2 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions |
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6 * are met: |
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7 * |
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8 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * |
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11 * 2. Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in |
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13 * the documentation and/or other materials provided with the |
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14 * distribution. |
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15 * |
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16 * 3. All advertising materials mentioning features or use of this |
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17 * software must display the following acknowledgment: |
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18 * "This product includes software developed by the OpenSSL Project |
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19 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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20 * |
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21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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22 * endorse or promote products derived from this software without |
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23 * prior written permission. For written permission, please contact |
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24 * licensing@OpenSSL.org. |
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25 * |
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26 * 5. Products derived from this software may not be called "OpenSSL" |
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27 * nor may "OpenSSL" appear in their names without prior written |
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28 * permission of the OpenSSL Project. |
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29 * |
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30 * 6. Redistributions of any form whatsoever must retain the following |
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31 * acknowledgment: |
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32 * "This product includes software developed by the OpenSSL Project |
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33 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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34 * |
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35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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46 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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47 * ==================================================================== |
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48 * |
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49 * This product includes cryptographic software written by Eric Young |
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50 * (eay@cryptsoft.com). This product includes software written by Tim |
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51 * Hudson (tjh@cryptsoft.com). |
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52 * |
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53 */ |
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54 /* |
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55 © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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56 */ |
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57 |
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58 #include "eng_int.h" |
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59 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) |
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60 #include "libcrypto_wsd_macros.h" |
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61 #include "libcrypto_wsd.h" |
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62 #endif |
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63 |
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64 /* If this symbol is defined then ENGINE_get_cipher_engine(), the function that |
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65 * is used by EVP to hook in cipher code and cache defaults (etc), will display |
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66 * brief debugging summaries to stderr with the 'nid'. */ |
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67 /* #define ENGINE_CIPHER_DEBUG */ |
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68 |
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69 #ifndef EMULATOR |
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70 static ENGINE_TABLE *cipher_table = NULL; |
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71 #else |
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72 GET_STATIC_VAR_FROM_TLS(cipher_table,tb_cipher,ENGINE_TABLE *) |
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73 #define cipher_table (*GET_WSD_VAR_NAME(cipher_table,tb_cipher, s)()) |
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74 #endif |
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75 |
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76 |
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77 EXPORT_C void ENGINE_unregister_ciphers(ENGINE *e) |
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78 { |
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79 engine_table_unregister(&cipher_table, e); |
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80 } |
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81 |
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82 static void engine_unregister_all_ciphers(void) |
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83 { |
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84 engine_table_cleanup(&cipher_table); |
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85 } |
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86 |
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87 EXPORT_C int ENGINE_register_ciphers(ENGINE *e) |
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88 { |
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89 if(e->ciphers) |
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90 { |
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91 const int *nids; |
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92 int num_nids = e->ciphers(e, NULL, &nids, 0); |
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93 if(num_nids > 0) |
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94 return engine_table_register(&cipher_table, |
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95 engine_unregister_all_ciphers, e, nids, |
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96 num_nids, 0); |
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97 } |
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98 return 1; |
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99 } |
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100 |
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101 EXPORT_C void ENGINE_register_all_ciphers() |
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102 { |
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103 ENGINE *e; |
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104 |
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105 for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e)) |
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106 ENGINE_register_ciphers(e); |
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107 } |
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108 |
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109 EXPORT_C int ENGINE_set_default_ciphers(ENGINE *e) |
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110 { |
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111 if(e->ciphers) |
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112 { |
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113 const int *nids; |
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114 int num_nids = e->ciphers(e, NULL, &nids, 0); |
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115 if(num_nids > 0) |
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116 return engine_table_register(&cipher_table, |
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117 engine_unregister_all_ciphers, e, nids, |
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118 num_nids, 1); |
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119 } |
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120 return 1; |
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121 } |
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122 |
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123 /* Exposed API function to get a functional reference from the implementation |
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124 * table (ie. try to get a functional reference from the tabled structural |
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125 * references) for a given cipher 'nid' */ |
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126 EXPORT_C ENGINE *ENGINE_get_cipher_engine(int nid) |
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127 { |
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128 return engine_table_select(&cipher_table, nid); |
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129 } |
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130 |
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131 /* Obtains a cipher implementation from an ENGINE functional reference */ |
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132 EXPORT_C const EVP_CIPHER *ENGINE_get_cipher(ENGINE *e, int nid) |
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133 { |
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134 const EVP_CIPHER *ret; |
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135 ENGINE_CIPHERS_PTR fn = ENGINE_get_ciphers(e); |
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136 if(!fn || !fn(e, &ret, NULL, nid)) |
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137 { |
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138 ENGINEerr(ENGINE_F_ENGINE_GET_CIPHER, |
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139 ENGINE_R_UNIMPLEMENTED_CIPHER); |
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140 return NULL; |
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141 } |
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142 return ret; |
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143 } |
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144 |
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145 /* Gets the cipher callback from an ENGINE structure */ |
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146 EXPORT_C ENGINE_CIPHERS_PTR ENGINE_get_ciphers(const ENGINE *e) |
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147 { |
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148 return e->ciphers; |
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149 } |
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150 |
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151 /* Sets the cipher callback in an ENGINE structure */ |
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152 EXPORT_C int ENGINE_set_ciphers(ENGINE *e, ENGINE_CIPHERS_PTR f) |
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153 { |
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154 e->ciphers = f; |
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155 return 1; |
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156 } |