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source: vbox/trunk/src/VBox/Runtime/common/asn1/asn1-ut-string-decode.cpp@ 70643

Last change on this file since 70643 was 69111, checked in by vboxsync, 7 years ago

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    /branches/VBox-3.0/src/VBox/Runtime/common/asn1/asn1-basics.cpp58652,​70973
    /branches/VBox-3.2/src/VBox/Runtime/common/asn1/asn1-basics.cpp66309,​66318
    /branches/VBox-4.0/src/VBox/Runtime/common/asn1/asn1-basics.cpp70873
    /branches/VBox-4.1/src/VBox/Runtime/common/asn1/asn1-basics.cpp74233,​78414,​78691,​81841,​82127,​85941,​85944-85947,​85949-85950,​85953,​86701,​86728,​87009
    /branches/VBox-4.2/src/VBox/Runtime/common/asn1/asn1-basics.cpp86229-86230,​86234,​86529,​91503-91504,​91506-91508,​91510,​91514-91515,​91521
    /branches/VBox-4.3/src/VBox/Runtime/common/asn1/asn1-basics.cpp91223
    /branches/VBox-4.3/trunk/src/VBox/Runtime/common/asn1/asn1-basics.cpp91223
    /branches/andy/draganddrop/src/VBox/Runtime/common/asn1/asn1-basics.cpp90781-91268
    /branches/andy/guestctrl20/src/VBox/Runtime/common/asn1/asn1-basics.cpp78916,​78930
    /branches/dsen/gui/src/VBox/Runtime/common/asn1/asn1-basics.cpp79076-79078,​79089,​79109-79110,​79112-79113,​79127-79130,​79134,​79141,​79151,​79155,​79157-79159,​79193,​79197
    /branches/dsen/gui2/src/VBox/Runtime/common/asn1/asn1-basics.cpp79224,​79228,​79233,​79235,​79258,​79262-79263,​79273,​79341,​79345,​79354,​79357,​79387-79388,​79559-79569,​79572-79573,​79578,​79581-79582,​79590-79591,​79598-79599,​79602-79603,​79605-79606,​79632,​79635,​79637,​79644
    /branches/dsen/gui3/src/VBox/Runtime/common/asn1/asn1-basics.cpp79645-79692
File size: 7.9 KB
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1/* $Id: asn1-ut-string-decode.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */
2/** @file
3 * IPRT - ASN.1, XXX STRING Types, Decoding.
4 */
5
6/*
7 * Copyright (C) 2006-2017 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include "internal/iprt.h"
32#include <iprt/asn1.h>
33
34#include <iprt/alloca.h>
35#include <iprt/err.h>
36#include <iprt/string.h>
37#include <iprt/ctype.h>
38
39#include <iprt/formats/asn1.h>
40
41
42RTDECL(int) RTAsn1String_DecodeAsn1(PRTASN1CURSOR pCursor, uint32_t fFlags, PRTASN1STRING pThis, const char *pszErrorTag)
43{
44 RT_ZERO(*pThis);
45 AssertReturn(!(fFlags & RTASN1CURSOR_GET_F_IMPLICIT), VERR_INVALID_PARAMETER);
46
47 int rc = RTAsn1CursorReadHdr(pCursor, &pThis->Asn1Core, pszErrorTag);
48 if (RT_SUCCESS(rc))
49 {
50 /*
51 * Do tag matching.
52 */
53 switch (pThis->Asn1Core.uTag)
54 {
55 case ASN1_TAG_UTF8_STRING:
56 case ASN1_TAG_NUMERIC_STRING:
57 case ASN1_TAG_PRINTABLE_STRING:
58 case ASN1_TAG_T61_STRING:
59 case ASN1_TAG_VIDEOTEX_STRING:
60 case ASN1_TAG_IA5_STRING:
61 case ASN1_TAG_GENERALIZED_TIME:
62 case ASN1_TAG_GRAPHIC_STRING:
63 case ASN1_TAG_VISIBLE_STRING:
64 case ASN1_TAG_GENERAL_STRING:
65 case ASN1_TAG_UNIVERSAL_STRING:
66 case ASN1_TAG_BMP_STRING:
67 rc = VINF_SUCCESS;
68 break;
69 default:
70 rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CURSOR_TAG_MISMATCH,
71 "%s: Not a string object: fClass=%#x / uTag=%#x",
72 pszErrorTag, pThis->Asn1Core.fClass, pThis->Asn1Core.uTag);
73 }
74 if (RT_SUCCESS(rc))
75 {
76 /*
77 * Match flags. CER/DER makes it complicated.
78 */
79 if (pThis->Asn1Core.fClass == (ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE))
80 {
81 /*
82 * Primitive strings are simple.
83 */
84 RTAsn1CursorSkip(pCursor, pThis->Asn1Core.cb);
85 pThis->Asn1Core.pOps = &g_RTAsn1String_Vtable;
86 pThis->Asn1Core.fFlags |= RTASN1CORE_F_PRIMITE_TAG_STRUCT;
87 RTAsn1CursorInitAllocation(pCursor, &pThis->Allocation);
88
89 /* UTF-8 conversion is done lazily, upon request. */
90 return VINF_SUCCESS;
91 }
92
93 if (pThis->Asn1Core.fClass == (ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_CONSTRUCTED))
94 {
95 /*
96 * Constructed strings are not yet fully implemented.
97 */
98 if (pCursor->fFlags & RTASN1CURSOR_FLAGS_DER)
99 rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CURSOR_ILLEGAL_CONSTRUCTED_STRING,
100 "%s: DER encoding does not allow constructed strings (cb=%#x uTag=%#x fClass=%#x)",
101 pszErrorTag, pThis->Asn1Core.cb, pThis->Asn1Core.uTag, pThis->Asn1Core.fClass);
102 else if (pCursor->fFlags & RTASN1CURSOR_FLAGS_CER)
103 {
104 if (pThis->Asn1Core.cb > 1000)
105 rc = VINF_SUCCESS;
106 else
107 rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CURSOR_ILLEGAL_CONSTRUCTED_STRING,
108 "%s: Constructed strings only allowed for >1000 byte in CER encoding: cb=%#x uTag=%#x fClass=%#x",
109 pszErrorTag, pThis->Asn1Core.cb,
110 pThis->Asn1Core.uTag, pThis->Asn1Core.fClass);
111 }
112 /** @todo implement constructed strings. */
113 if (RT_SUCCESS(rc))
114 rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CONSTRUCTED_STRING_NOT_IMPL,
115 "%s: Support for constructed strings is not implemented", pszErrorTag);
116 }
117 else
118 rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CURSOR_TAG_FLAG_CLASS_MISMATCH,
119 "%s: Not a valid string object: fClass=%#x / uTag=%#x",
120 pszErrorTag, pThis->Asn1Core.fClass, pThis->Asn1Core.uTag);
121 }
122 }
123 RT_ZERO(*pThis);
124 return rc;
125}
126
127
128/**
129 * Common worker for the specific string type getters.
130 *
131 * @returns IPRT status code
132 * @param pCursor The cursor.
133 * @param fFlags The RTASN1CURSOR_GET_F_XXX flags.
134 * @param uTag The string tag.
135 * @param pThis The output object.
136 * @param pszErrorTag The error tag.
137 * @param pszWhat The string type name.
138 */
139static int rtAsn1XxxString_DecodeAsn1(PRTASN1CURSOR pCursor, uint32_t fFlags, uint8_t uTag, PRTASN1STRING pThis,
140 const char *pszErrorTag, const char *pszWhat)
141{
142 pThis->cchUtf8 = 0;
143 pThis->pszUtf8 = NULL;
144
145 int rc = RTAsn1CursorReadHdr(pCursor, &pThis->Asn1Core, pszErrorTag);
146 if (RT_SUCCESS(rc))
147 {
148 rc = RTAsn1CursorMatchTagClassFlagsString(pCursor, &pThis->Asn1Core, uTag,
149 ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE,
150 fFlags, pszErrorTag, pszWhat);
151 if (RT_SUCCESS(rc))
152 {
153 if (!(pThis->Asn1Core.fClass & ASN1_TAGFLAG_CONSTRUCTED))
154 {
155 RTAsn1CursorSkip(pCursor, pThis->Asn1Core.cb);
156 pThis->Asn1Core.pOps = &g_RTAsn1String_Vtable;
157 pThis->Asn1Core.fFlags |= RTASN1CORE_F_PRIMITE_TAG_STRUCT;
158 RTAsn1CursorInitAllocation(pCursor, &pThis->Allocation);
159 /* UTF-8 conversion is done lazily, upon request. */
160 return VINF_SUCCESS;
161 }
162 rc = RTAsn1CursorSetInfo(pCursor, VERR_ASN1_CONSTRUCTED_STRING_NOT_IMPL,
163 "%s: Constructed %s not implemented.", pszErrorTag, pszWhat);
164 }
165 }
166 RT_ZERO(*pThis);
167 return rc;
168}
169
170
171/*
172 * Generate code for the tag specific decoders.
173 */
174#define RTASN1STRING_IMPL(a_uTag, a_szTag, a_Api) \
175 RTDECL(int) RT_CONCAT(a_Api,_DecodeAsn1)(PRTASN1CURSOR pCursor, uint32_t fFlags, \
176 PRTASN1STRING pThis, const char *pszErrorTag) \
177 { \
178 return rtAsn1XxxString_DecodeAsn1(pCursor, fFlags, a_uTag, pThis, pszErrorTag, a_szTag); \
179 }
180#include "asn1-ut-string-template2.h"
181
182
183/*
184 * Generate code for the associated collection types.
185 */
186#define RTASN1TMPL_TEMPLATE_FILE "../common/asn1/asn1-ut-string-template.h"
187#include <iprt/asn1-generator-internal-header.h>
188#include <iprt/asn1-generator-asn1-decoder.h>
189
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