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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_digest_engine(), the function that |
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65 * is used by EVP to hook in digest 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_DIGEST_DEBUG */ |
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68 #ifndef EMULATOR |
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69 static ENGINE_TABLE *digest_table = NULL; |
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70 #else |
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71 GET_STATIC_VAR_FROM_TLS(digest_table,tb_digest,ENGINE_TABLE *) |
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72 #define digest_table (*GET_WSD_VAR_NAME(digest_table,tb_digest,s)()) |
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73 #endif |
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74 |
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75 EXPORT_C void ENGINE_unregister_digests(ENGINE *e) |
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76 { |
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77 engine_table_unregister(&digest_table, e); |
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78 } |
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79 |
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80 static void engine_unregister_all_digests(void) |
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81 { |
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82 engine_table_cleanup(&digest_table); |
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83 } |
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84 |
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85 EXPORT_C int ENGINE_register_digests(ENGINE *e) |
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86 { |
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87 if(e->digests) |
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88 { |
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89 const int *nids; |
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90 int num_nids = e->digests(e, NULL, &nids, 0); |
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91 if(num_nids > 0) |
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92 return engine_table_register(&digest_table, |
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93 engine_unregister_all_digests, e, nids, |
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94 num_nids, 0); |
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95 } |
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96 return 1; |
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97 } |
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98 |
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99 EXPORT_C void ENGINE_register_all_digests() |
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100 { |
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101 ENGINE *e; |
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102 |
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103 for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e)) |
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104 ENGINE_register_digests(e); |
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105 } |
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106 |
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107 EXPORT_C int ENGINE_set_default_digests(ENGINE *e) |
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108 { |
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109 if(e->digests) |
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110 { |
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111 const int *nids; |
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112 int num_nids = e->digests(e, NULL, &nids, 0); |
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113 if(num_nids > 0) |
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114 return engine_table_register(&digest_table, |
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115 engine_unregister_all_digests, e, nids, |
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116 num_nids, 1); |
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117 } |
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118 return 1; |
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119 } |
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120 |
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121 /* Exposed API function to get a functional reference from the implementation |
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122 * table (ie. try to get a functional reference from the tabled structural |
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123 * references) for a given digest 'nid' */ |
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124 EXPORT_C ENGINE *ENGINE_get_digest_engine(int nid) |
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125 { |
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126 return engine_table_select(&digest_table, nid); |
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127 } |
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128 |
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129 /* Obtains a digest implementation from an ENGINE functional reference */ |
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130 EXPORT_C const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid) |
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131 { |
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132 const EVP_MD *ret; |
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133 ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e); |
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134 if(!fn || !fn(e, &ret, NULL, nid)) |
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135 { |
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136 ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST, |
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137 ENGINE_R_UNIMPLEMENTED_DIGEST); |
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138 return NULL; |
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139 } |
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140 return ret; |
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141 } |
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142 |
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143 /* Gets the digest callback from an ENGINE structure */ |
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144 EXPORT_C ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e) |
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145 { |
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146 return e->digests; |
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147 } |
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148 |
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149 /* Sets the digest callback in an ENGINE structure */ |
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150 EXPORT_C int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f) |
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151 { |
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152 e->digests = f; |
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153 return 1; |
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154 } |