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1 /* crypto/asn1/a_time.c */ |
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2 /* ==================================================================== |
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3 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
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4 * |
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5 * Redistribution and use in source and binary forms, with or without |
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6 * modification, are permitted provided that the following conditions |
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7 * are met: |
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8 * |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in |
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14 * the documentation and/or other materials provided with the |
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15 * distribution. |
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16 * |
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17 * 3. All advertising materials mentioning features or use of this |
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18 * software must display the following acknowledgment: |
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19 * "This product includes software developed by the OpenSSL Project |
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20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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21 * |
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22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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23 * endorse or promote products derived from this software without |
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24 * prior written permission. For written permission, please contact |
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25 * licensing@OpenSSL.org. |
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26 * |
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27 * 5. Products derived from this software may not be called "OpenSSL" |
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28 * nor may "OpenSSL" appear in their names without prior written |
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29 * permission of the OpenSSL Project. |
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30 * |
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31 * 6. Redistributions of any form whatsoever must retain the following |
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32 * acknowledgment: |
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33 * "This product includes software developed by the OpenSSL Project |
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34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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35 * |
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36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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47 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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48 * ==================================================================== |
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49 * |
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50 * This product includes cryptographic software written by Eric Young |
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51 * (eay@cryptsoft.com). This product includes software written by Tim |
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52 * Hudson (tjh@cryptsoft.com). |
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53 * |
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54 */ |
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55 |
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56 |
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57 /* This is an implementation of the ASN1 Time structure which is: |
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58 * Time ::= CHOICE { |
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59 * utcTime UTCTime, |
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60 * generalTime GeneralizedTime } |
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61 * written by Steve Henson. |
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62 */ |
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63 |
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64 #include <stdio.h> |
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65 #include <time.h> |
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66 #include "cryptlib.h" |
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67 #include "o_time.h" |
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68 #include <openssl/asn1t.h> |
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69 |
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70 IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME) |
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71 |
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72 IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME) |
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73 |
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74 #if 0 |
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75 EXPORT_C int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp) |
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76 { |
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77 #ifdef CHARSET_EBCDIC |
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78 /* KLUDGE! We convert to ascii before writing DER */ |
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79 char tmp[24]; |
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80 ASN1_STRING tmpstr; |
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81 |
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82 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) { |
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83 int len; |
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84 |
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85 tmpstr = *(ASN1_STRING *)a; |
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86 len = tmpstr.length; |
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87 ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len); |
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88 tmpstr.data = tmp; |
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89 a = (ASN1_GENERALIZEDTIME *) &tmpstr; |
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90 } |
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91 #endif |
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92 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) |
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93 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, |
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94 a->type ,V_ASN1_UNIVERSAL)); |
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95 ASN1err(ASN1_F_I2D_ASN1_TIME,ASN1_R_EXPECTING_A_TIME); |
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96 return -1; |
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97 } |
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98 #endif |
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99 |
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100 |
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101 EXPORT_C ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t) |
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102 { |
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103 struct tm *ts; |
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104 struct tm data; |
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105 |
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106 ts=OPENSSL_gmtime(&t,&data); |
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107 if (ts == NULL) |
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108 { |
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109 ASN1err(ASN1_F_ASN1_TIME_SET, ASN1_R_ERROR_GETTING_TIME); |
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110 return NULL; |
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111 } |
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112 if((ts->tm_year >= 50) && (ts->tm_year < 150)) |
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113 return ASN1_UTCTIME_set(s, t); |
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114 return ASN1_GENERALIZEDTIME_set(s,t); |
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115 } |
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116 |
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117 EXPORT_C int ASN1_TIME_check(ASN1_TIME *t) |
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118 { |
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119 if (t->type == V_ASN1_GENERALIZEDTIME) |
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120 return ASN1_GENERALIZEDTIME_check(t); |
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121 else if (t->type == V_ASN1_UTCTIME) |
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122 return ASN1_UTCTIME_check(t); |
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123 return 0; |
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124 } |
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125 |
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126 /* Convert an ASN1_TIME structure to GeneralizedTime */ |
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127 EXPORT_C ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out) |
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128 { |
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129 ASN1_GENERALIZEDTIME *ret; |
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130 char *str; |
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131 int newlen; |
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132 |
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133 if (!ASN1_TIME_check(t)) return NULL; |
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134 |
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135 if (!out || !*out) |
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136 { |
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137 if (!(ret = ASN1_GENERALIZEDTIME_new ())) |
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138 return NULL; |
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139 if (out) *out = ret; |
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140 } |
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141 else ret = *out; |
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142 |
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143 /* If already GeneralizedTime just copy across */ |
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144 if (t->type == V_ASN1_GENERALIZEDTIME) |
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145 { |
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146 if(!ASN1_STRING_set(ret, t->data, t->length)) |
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147 return NULL; |
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148 return ret; |
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149 } |
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150 |
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151 /* grow the string */ |
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152 if (!ASN1_STRING_set(ret, NULL, t->length + 2)) |
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153 return NULL; |
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154 /* ASN1_STRING_set() allocated 'len + 1' bytes. */ |
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155 newlen = t->length + 2 + 1; |
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156 str = (char *)ret->data; |
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157 /* Work out the century and prepend */ |
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158 if (t->data[0] >= '5') BUF_strlcpy(str, "19", newlen); |
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159 else BUF_strlcpy(str, "20", newlen); |
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160 |
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161 BUF_strlcat(str, (char *)t->data, newlen); |
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162 |
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163 return ret; |
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164 } |