1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 #include "prtime.h"
6 #include "secder.h"
7 #include "secitem.h"
8 #include "secerr.h"
9
10 static char *DecodeUTCTime2FormattedAscii(SECItem *utcTimeDER, char *format);
11 static char *DecodeGeneralizedTime2FormattedAscii(SECItem *generalizedTimeDER, char *format);
12
13 /* convert DER utc time to ascii time string */
14 char *
DER_UTCTimeToAscii(SECItem * utcTime)15 DER_UTCTimeToAscii(SECItem *utcTime)
16 {
17 return (DecodeUTCTime2FormattedAscii(utcTime, "%a %b %d %H:%M:%S %Y"));
18 }
19
20 /* convert DER utc time to ascii time string, only include day, not time */
21 char *
DER_UTCDayToAscii(SECItem * utctime)22 DER_UTCDayToAscii(SECItem *utctime)
23 {
24 return (DecodeUTCTime2FormattedAscii(utctime, "%a %b %d, %Y"));
25 }
26
27 /* convert DER generalized time to ascii time string, only include day,
28 not time */
29 char *
DER_GeneralizedDayToAscii(SECItem * gentime)30 DER_GeneralizedDayToAscii(SECItem *gentime)
31 {
32 return (DecodeGeneralizedTime2FormattedAscii(gentime, "%a %b %d, %Y"));
33 }
34
35 /* convert DER generalized or UTC time to ascii time string, only include
36 day, not time */
37 char *
DER_TimeChoiceDayToAscii(SECItem * timechoice)38 DER_TimeChoiceDayToAscii(SECItem *timechoice)
39 {
40 switch (timechoice->type) {
41
42 case siUTCTime:
43 return DER_UTCDayToAscii(timechoice);
44
45 case siGeneralizedTime:
46 return DER_GeneralizedDayToAscii(timechoice);
47
48 default:
49 PORT_Assert(0);
50 PORT_SetError(SEC_ERROR_INVALID_ARGS);
51 return NULL;
52 }
53 }
54
55 char *
CERT_UTCTime2FormattedAscii(PRTime utcTime,char * format)56 CERT_UTCTime2FormattedAscii(PRTime utcTime, char *format)
57 {
58 PRExplodedTime printableTime;
59 char *timeString;
60
61 /* Converse time to local time and decompose it into components */
62 PR_ExplodeTime(utcTime, PR_LocalTimeParameters, &printableTime);
63
64 timeString = (char *)PORT_Alloc(256);
65
66 if (timeString) {
67 if (!PR_FormatTime(timeString, 256, format, &printableTime)) {
68 PORT_Free(timeString);
69 timeString = NULL;
70 }
71 }
72
73 return (timeString);
74 }
75
76 char *
CERT_GenTime2FormattedAscii(PRTime genTime,char * format)77 CERT_GenTime2FormattedAscii(PRTime genTime, char *format)
78 {
79 PRExplodedTime printableTime;
80 char *timeString;
81
82 /* Decompose time into components */
83 PR_ExplodeTime(genTime, PR_GMTParameters, &printableTime);
84
85 timeString = (char *)PORT_Alloc(256);
86
87 if (timeString) {
88 if (!PR_FormatTime(timeString, 256, format, &printableTime)) {
89 PORT_Free(timeString);
90 timeString = NULL;
91 PORT_SetError(SEC_ERROR_OUTPUT_LEN);
92 }
93 }
94
95 return (timeString);
96 }
97
98 /* convert DER utc time to ascii time string, The format of the time string
99 depends on the input "format"
100 */
101 static char *
DecodeUTCTime2FormattedAscii(SECItem * utcTimeDER,char * format)102 DecodeUTCTime2FormattedAscii(SECItem *utcTimeDER, char *format)
103 {
104 PRTime utcTime;
105 int rv;
106
107 rv = DER_UTCTimeToTime(&utcTime, utcTimeDER);
108 if (rv) {
109 return (NULL);
110 }
111 return (CERT_UTCTime2FormattedAscii(utcTime, format));
112 }
113
114 /* convert DER utc time to ascii time string, The format of the time string
115 depends on the input "format"
116 */
117 static char *
DecodeGeneralizedTime2FormattedAscii(SECItem * generalizedTimeDER,char * format)118 DecodeGeneralizedTime2FormattedAscii(SECItem *generalizedTimeDER, char *format)
119 {
120 PRTime generalizedTime;
121 int rv;
122
123 rv = DER_GeneralizedTimeToTime(&generalizedTime, generalizedTimeDER);
124 if (rv) {
125 return (NULL);
126 }
127 return (CERT_GeneralizedTime2FormattedAscii(generalizedTime, format));
128 }
129
130 /* decode a SECItem containing either a SEC_ASN1_GENERALIZED_TIME
131 or a SEC_ASN1_UTC_TIME */
132
133 SECStatus
DER_DecodeTimeChoice(PRTime * output,const SECItem * input)134 DER_DecodeTimeChoice(PRTime *output, const SECItem *input)
135 {
136 switch (input->type) {
137 case siGeneralizedTime:
138 return DER_GeneralizedTimeToTime(output, input);
139
140 case siUTCTime:
141 return DER_UTCTimeToTime(output, input);
142
143 default:
144 PORT_SetError(SEC_ERROR_INVALID_ARGS);
145 PORT_Assert(0);
146 return SECFailure;
147 }
148 }
149
150 /* encode a PRTime to an ASN.1 DER SECItem containing either a
151 SEC_ASN1_GENERALIZED_TIME or a SEC_ASN1_UTC_TIME */
152
153 SECStatus
DER_EncodeTimeChoice(PLArenaPool * arena,SECItem * output,PRTime input)154 DER_EncodeTimeChoice(PLArenaPool *arena, SECItem *output, PRTime input)
155 {
156 SECStatus rv;
157
158 rv = DER_TimeToUTCTimeArena(arena, output, input);
159 if (rv == SECSuccess || PORT_GetError() != SEC_ERROR_INVALID_ARGS) {
160 return rv;
161 }
162 return DER_TimeToGeneralizedTimeArena(arena, output, input);
163 }
164