|
1 /* |
|
2 * Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the License "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * This file contains the implementation of the UTC time ASN1 object. |
|
16 * At this moment in time this class will only deal with Zulu times and |
|
17 * doesn't have any kind of handling for time offsets. This is not going to be |
|
18 * a problem for certificate implementations as the PKIX (RFC2459) profile |
|
19 * defines that certificate validity periods are specified as Zulu times. |
|
20 * Points that need updating if handling for offsets are marked with __OFFSET__ |
|
21 * |
|
22 */ |
|
23 |
|
24 |
|
25 #include <asn1dec.h> |
|
26 |
|
27 EXPORT_C TASN1DecUTCTime::TASN1DecUTCTime() |
|
28 { |
|
29 } |
|
30 |
|
31 |
|
32 TTime TASN1DecUTCTime::GetTimeL(const TDesC8& aSource) |
|
33 |
|
34 { |
|
35 // __OFFSET__ Extract corrected time to include offset too. |
|
36 |
|
37 // Did this checking ought to be done on creation rather than when we attempt to get the result? |
|
38 // YES! |
|
39 |
|
40 // I guess we ought to check that the contents we've got are long enough to contain a time! |
|
41 if (aSource.Length()<11) |
|
42 { |
|
43 User::Leave(KErrArgument); |
|
44 } |
|
45 |
|
46 // Check all digits the main bit of time are valid - this doesn't check the seconds or offset |
|
47 TInt i; |
|
48 for (i=0;i<10;i++) |
|
49 { |
|
50 TUint8 j; |
|
51 j=(TUint8)(aSource[i]-'0'); |
|
52 if (j>=10) |
|
53 { |
|
54 User::Leave(KErrArgument); |
|
55 } |
|
56 } |
|
57 // Uh-oh, looks like we're going to have to pull each bit manually and pop it in a TDateTime thing |
|
58 TInt Year,Month,Day,Hour,Minute,Second=0; // Only set seconds to zero 'cos they are optional, everything else is going to be set |
|
59 Year=(aSource[0]-'0')*10+aSource[1]-'0'; |
|
60 Year+=(Year<50)?2000:1900; // collection to fit with PKIX UTC/Generalised time rollover at 2049/2050 |
|
61 Month=(aSource[2]-'0')*10+aSource[3]-'0'; |
|
62 Month--; // Because the enum for months starts at 0 not 1 |
|
63 Day=((aSource[4]-'0')*10+aSource[5]-'0') -1;//added -1 for offset from zero(!) |
|
64 Hour=(aSource[6]-'0')*10+aSource[7]-'0'; |
|
65 Minute=(aSource[8]-'0')*10+aSource[9]-'0'; |
|
66 TInt Pos=10; |
|
67 |
|
68 if (aSource.Length()>11) |
|
69 { |
|
70 if ((aSource[Pos]>='0')&&(aSource[Pos]<='9')) |
|
71 { |
|
72 // seconds |
|
73 Second=(aSource[Pos++]-'0')*10; |
|
74 Second += aSource[Pos++]-'0'; |
|
75 } |
|
76 } |
|
77 if (aSource.Length()>Pos) |
|
78 { |
|
79 switch (aSource[Pos]) |
|
80 { |
|
81 case 'Z': |
|
82 // Zulu - nothing more to do |
|
83 break; |
|
84 case '+': |
|
85 case '-': |
|
86 // __OFFSET__ Extract corrected time to include offset too. |
|
87 User::Leave(KErrNotSupported); |
|
88 break; |
|
89 default: |
|
90 // Error! |
|
91 User::Leave(KErrArgument); |
|
92 break; |
|
93 } |
|
94 } |
|
95 else |
|
96 { |
|
97 User::Leave(KErrArgument); |
|
98 } |
|
99 |
|
100 if (Month<EJanuary || Month>EDecember) |
|
101 { |
|
102 User::Leave(KErrArgument); |
|
103 } |
|
104 TMonth month = (TMonth)Month; |
|
105 |
|
106 if ( (Day<0 || Day>=Time::DaysInMonth(Year,month)) || |
|
107 (Hour<0 || Hour>=24) || |
|
108 (Minute<0 || Minute>=60) || |
|
109 (Second<0 || Second>=60) ) |
|
110 { |
|
111 User::Leave(KErrArgument); |
|
112 } |
|
113 |
|
114 TDateTime D(Year,month,Day,Hour,Minute,Second,0); |
|
115 |
|
116 TTime T(D); |
|
117 return T; |
|
118 } |
|
119 |
|
120 // __OFFSET__ Add GetOffset() method |
|
121 |
|
122 EXPORT_C TTime TASN1DecUTCTime::DecodeDERL(const TDesC8& aSource,TInt& aPos) |
|
123 |
|
124 { |
|
125 TPtrC8 Source=aSource.Mid(aPos); |
|
126 TASN1DecGeneric gen(Source); |
|
127 gen.InitL(); |
|
128 TTime t = GetTimeL(gen.GetContentDER()); |
|
129 aPos+=gen.LengthDER(); |
|
130 return t; |
|
131 } |
|
132 |
|
133 EXPORT_C TTime TASN1DecUTCTime::DecodeDERL(const TASN1DecGeneric& aGen) |
|
134 |
|
135 { |
|
136 return GetTimeL(aGen.GetContentDER()); |
|
137 } |