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f6aed2cd DSH |
1 | /* crypto/asn1/a_gentm.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | /* GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME */ | |
60 | ||
61 | #include <stdio.h> | |
62 | #include <time.h> | |
63 | #include "cryptlib.h" | |
ec577822 | 64 | #include <openssl/asn1.h> |
f6aed2cd DSH |
65 | |
66 | /* ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_NEW,ASN1_R_GENERALIZEDTIME_TOO_LONG); | |
67 | * ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ASN1_R_EXPECTING_A_GENERALIZEDTIME); | |
68 | */ | |
69 | ||
6b691a5c | 70 | int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp) |
f6aed2cd DSH |
71 | { |
72 | return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, | |
73 | V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL)); | |
74 | } | |
75 | ||
76 | ||
6b691a5c UM |
77 | ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a, |
78 | unsigned char **pp, long length) | |
f6aed2cd DSH |
79 | { |
80 | ASN1_GENERALIZEDTIME *ret=NULL; | |
81 | ||
82 | ret=(ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length, | |
83 | V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL); | |
84 | if (ret == NULL) | |
85 | { | |
86 | ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ERR_R_NESTED_ASN1_ERROR); | |
87 | return(NULL); | |
88 | } | |
89 | if (!ASN1_GENERALIZEDTIME_check(ret)) | |
90 | { | |
91 | ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ASN1_R_INVALID_TIME_FORMAT); | |
92 | goto err; | |
93 | } | |
94 | ||
95 | return(ret); | |
96 | err: | |
97 | if ((ret != NULL) && ((a == NULL) || (*a != ret))) | |
98 | ASN1_GENERALIZEDTIME_free(ret); | |
99 | return(NULL); | |
100 | } | |
101 | ||
6b691a5c | 102 | int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d) |
f6aed2cd DSH |
103 | { |
104 | static int min[9]={ 0, 0, 1, 1, 0, 0, 0, 0, 0}; | |
105 | static int max[9]={99, 99,12,31,23,59,59,12,59}; | |
106 | char *a; | |
107 | int n,i,l,o; | |
108 | ||
109 | if (d->type != V_ASN1_GENERALIZEDTIME) return(0); | |
110 | l=d->length; | |
111 | a=(char *)d->data; | |
112 | o=0; | |
113 | /* GENERALIZEDTIME is similar to UTCTIME except the year is | |
114 | * represented as YYYY. This stuff treats everything as a two digit | |
115 | * field so make first two fields 00 to 99 | |
116 | */ | |
117 | if (l < 13) goto err; | |
118 | for (i=0; i<7; i++) | |
119 | { | |
120 | if ((i == 6) && ((a[o] == 'Z') || | |
121 | (a[o] == '+') || (a[o] == '-'))) | |
122 | { i++; break; } | |
123 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
124 | n= a[o]-'0'; | |
125 | if (++o > l) goto err; | |
126 | ||
127 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
128 | n=(n*10)+ a[o]-'0'; | |
129 | if (++o > l) goto err; | |
130 | ||
131 | if ((n < min[i]) || (n > max[i])) goto err; | |
132 | } | |
133 | if (a[o] == 'Z') | |
134 | o++; | |
135 | else if ((a[o] == '+') || (a[o] == '-')) | |
136 | { | |
137 | o++; | |
138 | if (o+4 > l) goto err; | |
139 | for (i=7; i<9; i++) | |
140 | { | |
141 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
142 | n= a[o]-'0'; | |
143 | o++; | |
144 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
145 | n=(n*10)+ a[o]-'0'; | |
146 | if ((n < min[i]) || (n > max[i])) goto err; | |
147 | o++; | |
148 | } | |
149 | } | |
150 | return(o == l); | |
151 | err: | |
152 | return(0); | |
153 | } | |
154 | ||
6b691a5c | 155 | int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, char *str) |
f6aed2cd DSH |
156 | { |
157 | ASN1_GENERALIZEDTIME t; | |
158 | ||
159 | t.type=V_ASN1_GENERALIZEDTIME; | |
160 | t.length=strlen(str); | |
161 | t.data=(unsigned char *)str; | |
162 | if (ASN1_GENERALIZEDTIME_check(&t)) | |
163 | { | |
164 | if (s != NULL) | |
165 | { | |
166 | ASN1_STRING_set((ASN1_STRING *)s, | |
167 | (unsigned char *)str,t.length); | |
168 | } | |
169 | return(1); | |
170 | } | |
171 | else | |
172 | return(0); | |
173 | } | |
174 | ||
6b691a5c UM |
175 | ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, |
176 | time_t t) | |
f6aed2cd DSH |
177 | { |
178 | char *p; | |
179 | struct tm *ts; | |
180 | #if defined(THREADS) && !defined(WIN32) | |
181 | struct tm data; | |
182 | #endif | |
183 | ||
184 | if (s == NULL) | |
185 | s=ASN1_GENERALIZEDTIME_new(); | |
186 | if (s == NULL) | |
187 | return(NULL); | |
188 | ||
189 | #if defined(THREADS) && !defined(WIN32) | |
190 | ts=(struct tm *)gmtime_r(&t,&data); | |
191 | #else | |
192 | ts=(struct tm *)gmtime(&t); | |
193 | #endif | |
194 | p=(char *)s->data; | |
195 | if ((p == NULL) || (s->length < 16)) | |
196 | { | |
197 | p=Malloc(20); | |
198 | if (p == NULL) return(NULL); | |
199 | if (s->data != NULL) | |
200 | Free(s->data); | |
201 | s->data=(unsigned char *)p; | |
202 | } | |
203 | ||
204 | sprintf(p,"%04d%02d%02d%02d%02d%02dZ",ts->tm_year, | |
205 | ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec); | |
206 | s->length=strlen(p); | |
207 | s->type=V_ASN1_GENERALIZEDTIME; | |
208 | return(s); | |
209 | } |