/* $Id: asn1-ut-string.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */ /** @file * IPRT - ASN.1, XXX STRING Types. */ /* * Copyright (C) 2006-2017 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #include "internal/iprt.h" #include #include #include #include #include #include /********************************************************************************************************************************* * Global Variables * *********************************************************************************************************************************/ static uint8_t const g_acbStringTags[] = { /* [ASN1_TAG_EOC] = */ 0, /* [ASN1_TAG_BOOLEAN] = */ 0, /* [ASN1_TAG_INTEGER] = */ 0, /* [ASN1_TAG_BIT_STRING] = */ 0, /* [ASN1_TAG_OCTET_STRING] = */ 0, /* [ASN1_TAG_NULL] = */ 0, /* [ASN1_TAG_OID] = */ 0, /* [ASN1_TAG_OBJECT_DESCRIPTOR] = */ 0, /* [ASN1_TAG_EXTERNAL] = */ 0, /* [ASN1_TAG_REAL] = */ 0, /* [ASN1_TAG_ENUMERATED] = */ 0, /* [ASN1_TAG_EMBEDDED_PDV] = */ 0, /* [ASN1_TAG_UTF8_STRING] = */ 1, /* [ASN1_TAG_RELATIVE_OID] = */ 0, /* [ASN1_TAG_RESERVED_14] = */ 0, /* [ASN1_TAG_RESERVED_15] = */ 0, /* [ASN1_TAG_SEQUENCE] = */ 0, /* [ASN1_TAG_SET] = */ 0, /* [ASN1_TAG_NUMERIC_STRING] = */ 1, /* [ASN1_TAG_PRINTABLE_STRING] = */ 1, /* [ASN1_TAG_T61_STRING] = */ 1, /* [ASN1_TAG_VIDEOTEX_STRING] = */ 1, /* [ASN1_TAG_IA5_STRING] = */ 1, /* [ASN1_TAG_UTC_TIME] = */ 0, /* [ASN1_TAG_GENERALIZED_TIME] = */ 0, /* [ASN1_TAG_GRAPHIC_STRING] = */ 1, /* [ASN1_TAG_VISIBLE_STRING] = */ 1, /* [ASN1_TAG_GENERAL_STRING] = */ 1, /* [ASN1_TAG_UNIVERSAL_STRING] = */ 4, /* [ASN1_TAG_CHARACTER_STRING] = */ 1, /* [ASN1_TAG_BMP_STRING] = */ 2, }; /* * ISO/IEC-2022 + TeletexString mess. */ /** * ISO-2022 codepoint mappings. */ typedef struct RTISO2022MAP { /** The number of bytes per character. */ uint8_t cb; /** The registration number. */ uint16_t uRegistration; /** The size of the pauToUni table. */ uint16_t cToUni; /** Pointer to the convertion table from ISO-2022 to Unicode. * ASSUMES that unicode chars above 0xffff won't be required. */ uint16_t const *pauToUni; /** Escape sequence for loading into G0 or C0 or C1 depending on the type (sans * ESC). */ uint8_t abEscLoadXX[6]; /** Escape sequence for loading into G1 (sans ESC). */ uint8_t abEscLoadG1[6]; /** Escape sequence for loading into G2 (sans ESC). */ uint8_t abEscLoadG2[6]; /** Escape sequence for loading into G3 (sans ESC). */ uint8_t abEscLoadG3[6]; } RTISO2022MAP; /** Pointer to const ISO-2022 mappings. */ typedef RTISO2022MAP const *PCRTISO2022MAP; /** Unused codepoint value. */ #define RTISO2022_UNUSED UINT16_C(0xffff) /** Dummy mappings to avoid dealing with NULL pointers in the decoder * registers. */ static const RTISO2022MAP g_DummyMap = { 1, UINT16_MAX, 0, NULL, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* No escape into G0 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* No escape into G1 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* No escape into G2 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* No escape into G3 */ }; /** GL mappings for ISO-IR-168 (Japanese, update of #87), with space and * delete. */ static const RTISO2022MAP g_IsoIr168Map = { //2, 168, RT_ELEMENTS(g_awcIsoIr168Decode), g_awcIsoIr168Decode, 2, 168, 0, NULL, { 0x26, 0x40, 0x2b, 0x24, 0x42, 0xff } /* Esc into G0 */, { 0x26, 0x40, 0x2b, 0x24, 0x29, 0x42 } /* Esc into G1 */, { 0x26, 0x40, 0x2b, 0x24, 0x2a, 0x42 } /* Esc into G2 */, { 0x26, 0x40, 0x2b, 0x24, 0x2b, 0x42 } /* Esc into G3 */, }; /** GL mappings for ISO-IR-165 (Chinese), with space and delete. */ static const RTISO2022MAP g_IsoIr165Map = { //2, 165, RT_ELEMENTS(g_awcIsoIr165Decode), g_awcIsoIr165Decode, 2, 165, 0, NULL, { 0x24, 0x28, 0x45, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x24, 0x29, 0x45, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x24, 0x2a, 0x45, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x24, 0x2b, 0x45, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GL mappings for ISO-IR-150 (Greek), with space and delete. */ static const RTISO2022MAP g_IsoIr150Map = { //1, 150, RT_ELEMENTS(g_awcIsoIr150Decode), g_awcIsoIr150Decode, 1, 150, 0, NULL, { 0x28, 0x21, 0x40, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x29, 0x21, 0x40, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2a, 0x21, 0x40, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2b, 0x21, 0x40, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GL mappings for ISO-IR-103 (Teletex supplementary), with space and * delete. */ static const RTISO2022MAP g_IsoIr103Map = { //1, 103, RT_ELEMENTS(g_awcIsoIr103Decode), g_awcIsoIr103Decode, 1, 103, 0, NULL, { 0x28, 0x76, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x29, 0x76, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2a, 0x76, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2b, 0x76, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** * GL mapping from ISO-IR-102 (Teletex primary) to unicode, with space and * delete. * * Mostly 1:1, except that (a) what would be dollar is currency sign, (b) * positions 0x5c, 0x5e, 0x7b, 0x7d and 0x7e are defined not to be used. */ static uint16_t const g_awcIsoIr102Decode[0x60] = { 0x0020, 0x0021, 0x0022, 0x0023, 0x00A4, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0xffff, 0x005d, 0xffff, 0x005f, 0xffff, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0xffff, 0x007c, 0xffff, 0xffff, 0x007f, }; /** GL mappings for ISO-IR-102, with space and delete. */ static const RTISO2022MAP g_IsoIr102Map = { 1, 102, RT_ELEMENTS(g_awcIsoIr102Decode), g_awcIsoIr102Decode, { 0x28, 0x75, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x29, 0x75, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2a, 0x75, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2b, 0x75, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; #if 0 /* unused */ /** GL mappings for ISO-IR-87 (Japanese), with space and delete. */ static const RTISO2022MAP g_IsoIr87Map = { //1, 87, RT_ELEMENTS(g_awcIsoIr87Decode), g_awcIsoIr97Decode, 1, 87, 0, NULL, { 0x24, 0x42, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x24, 0x29, 0x42, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x24, 0x2a, 0x42, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x24, 0x2b, 0x42, 0xff, 0xff, 0xff } /* Esc into G3 */, }; #endif /** * GL mapping from ISO-IR-6 (ASCII) to unicode, with space and delete. * * Completely 1:1. */ static uint16_t const g_awcIsoIr6Decode[0x60] = { 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x006b, 0x007c, 0x007d, 0x007e, 0x007f, }; /** GL mappings for ISO-IR-6 (ASCII), with space and delete. */ static const RTISO2022MAP g_IsoIr6Map = { 1, 6, RT_ELEMENTS(g_awcIsoIr6Decode), g_awcIsoIr6Decode, { 0x28, 0x42, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x29, 0x42, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GL maps. */ static PCRTISO2022MAP g_paGLMaps[] = { &g_IsoIr6Map, &g_IsoIr102Map, &g_IsoIr103Map, &g_IsoIr150Map, &g_IsoIr165Map, &g_IsoIr168Map, }; /** GR mappings for ISO-IR-164 (Hebrew supplementary). */ static const RTISO2022MAP g_IsoIr164Map = { //1, 164, RT_ELEMENTS(g_awcIsoIr164Decode), g_awcIsoIr164Decode 1, 164, 0, NULL, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x2d, 0x53, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2e, 0x53, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2f, 0x53, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GR mappings for ISO-IR-156 (Supplementary for ASCII (#6)). */ static const RTISO2022MAP g_IsoIr156Map = { //1, 156, RT_ELEMENTS(g_awcIsoIr156Decode), g_awcIsoIr156Decode 1, 156, 0, NULL, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x2d, 0x52, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2e, 0x52, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2f, 0x52, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GR mappings for ISO-IR-153 (Basic Cyrillic). */ static const RTISO2022MAP g_IsoIr153Map = { //1, 153, RT_ELEMENTS(g_awcIsoIr153Decode), g_awcIsoIr153Decode 1, 153, 0, NULL, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x2d, 0x4f, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2e, 0x4f, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2f, 0x4f, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GR mappings for ISO-IR-144 (Cryllic part of Latin/Cyrillic). */ static const RTISO2022MAP g_IsoIr144Map = { //1, 144, RT_ELEMENTS(g_awcIsoIr144Decode), g_awcIsoIr144Decode 1, 144, 0, NULL, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x2d, 0x4f, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2e, 0x4f, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2f, 0x4f, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GR mappings for ISO-IR-126 (Latin/Greek). */ static const RTISO2022MAP g_IsoIr126Map = { //1, 126, RT_ELEMENTS(g_awcIsoIr126Decode), g_awcIsoIr126Decode 1, 126, 0, NULL, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* Esc into G0 */, { 0x2d, 0x46, 0xff, 0xff, 0xff, 0xff } /* Esc into G1 */, { 0x2e, 0x46, 0xff, 0xff, 0xff, 0xff } /* Esc into G2 */, { 0x2f, 0x46, 0xff, 0xff, 0xff, 0xff } /* Esc into G3 */, }; /** GR maps. */ static PCRTISO2022MAP g_paGRMaps[] = { &g_IsoIr126Map, &g_IsoIr144Map, &g_IsoIr153Map, &g_IsoIr156Map, &g_IsoIr164Map, }; /** C0 mapping from ISO-IR-106 to unicode. */ static uint16_t g_awcIsoIr106Decode[0x20] = { 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0008, 0xffff, 0x000a, 0xffff, 0x000c, 0x000d, 0x000e, 0x000f, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x008e, 0x000a, 0x001b, 0xffff, 0x008f, 0xffff, 0xffff, }; /** C0 mappings for ISO-IR-106. */ static const RTISO2022MAP g_IsoIr106Map = { 1, 106, RT_ELEMENTS(g_awcIsoIr106Decode), g_awcIsoIr106Decode, { 0x21, 0x45, 0xff, 0xff, 0xff, 0xff } /* Esc into C0 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* N/A */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* N/A */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* N/A */, }; /** C0 maps. */ static PCRTISO2022MAP g_paC0Maps[] = { &g_IsoIr106Map, }; /** C1 mapping from ISO-IR-107 to unicode. */ static uint16_t g_awcIsoIr107Decode[0x20] = { 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x008b, 0x008c, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x009b, 0xffff, 0xffff, 0xffff, 0xffff, }; /** C1 mappings for ISO-IR-107. */ static const RTISO2022MAP g_IsoIr107Map = { 1, 107, RT_ELEMENTS(g_awcIsoIr107Decode), g_awcIsoIr107Decode, { 0x22, 0x48, 0xff, 0xff, 0xff, 0xff } /* Esc into C1 */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* N/A */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* N/A */, { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* N/A */, }; /** C1 maps. */ static PCRTISO2022MAP g_paC1Maps[] = { &g_IsoIr107Map, }; static int rtIso2022Decoder_LookupAndSet(PCRTISO2022MAP *ppMapRet, uint16_t uRegistration, PCRTISO2022MAP *papMaps, uint32_t cMaps) { uint32_t i = cMaps; while (i-- > 0) if (papMaps[i]->uRegistration == uRegistration) { /** @todo skip non-Teletex codesets if we ever add more than we need for it. */ *ppMapRet = papMaps[i]; return VINF_SUCCESS; } return VERR_ASN1_INVALID_T61_STRING_ENCODING; } /** * ISO-2022 decoder state. */ typedef struct RTISO2022DECODERSTATE { /** Pointer to the string */ uint8_t const *pabString; /** The string size. */ uint32_t cbString; /** The current string position. */ uint32_t offString; /** The GL mapping. */ PCRTISO2022MAP pMapGL; /** The GR mapping. */ PCRTISO2022MAP pMapGR; /** The lower control set (C0) mapping. */ PCRTISO2022MAP pMapC0; /** The higher control set (C1) mapping. */ PCRTISO2022MAP pMapC1; /** The G0, G1, G2, and G3 mappings. */ PCRTISO2022MAP apMapGn[4]; /** Used by SS2 & SS3 to store the orignal GL value that is to be restored. */ PCRTISO2022MAP pRestoreGL; /** Pointer to extended error info buffer, optional. */ PRTERRINFO pErrInfo; } RTISO2022DECODERSTATE; /** Pointer to a const ISO-2022 decoder state. */ typedef RTISO2022DECODERSTATE *PRTISO2022DECODERSTATE; static int rtIso2022Decoder_SetGL(PRTISO2022DECODERSTATE pThis, PCRTISO2022MAP pNewMap) { pThis->pMapGL = pNewMap; return VINF_SUCCESS; } static int rtIso2022Decoder_SetGR(PRTISO2022DECODERSTATE pThis, PCRTISO2022MAP pNewMap) { pThis->pMapGR = pNewMap; return VINF_SUCCESS; } static int rtIso2022Decoder_SetGLForOneChar(PRTISO2022DECODERSTATE pThis, PCRTISO2022MAP pTmpMap) { pThis->pRestoreGL = pThis->pMapGL; pThis->pMapGL = pTmpMap; return VINF_SUCCESS; } static int rtIso2022Decoder_SetC0(PRTISO2022DECODERSTATE pThis, uint16_t uRegistration) { return rtIso2022Decoder_LookupAndSet(&pThis->pMapC0, uRegistration, g_paC0Maps, RT_ELEMENTS(g_paC0Maps)); } static int rtIso2022Decoder_SetC1(PRTISO2022DECODERSTATE pThis, uint16_t uRegistration) { return rtIso2022Decoder_LookupAndSet(&pThis->pMapC1, uRegistration, g_paC1Maps, RT_ELEMENTS(g_paC1Maps)); } /** * Worker for rtIso2022Decoder_FindEscAndSet. * * @returns true if match, false if not. * @param pabLeft Pointer to the first string byte after the ESC. * @param cbLeft The number of bytes left in the string. * @param pabRight Pointer to the abEscLoad* byte array to match with. * @param cbRight Size of the mapping sequence (fixed). * @param pcchMatch Where to return the length of the escape sequence (sans * ESC) on success. */ static bool rtIso2022Decoder_MatchEscSeqFrom2ndByte(uint8_t const *pabLeft, uint32_t cbLeft, uint8_t const *pabRight, uint32_t cbRight, uint32_t *pcchMatch) { Assert(cbRight == 6); uint32_t i = 1; while (i < cbRight) { if (pabRight[i] == 0xff) break; if (cbLeft <= i || pabLeft[i] != pabRight[i]) return false; i++; } *pcchMatch = i; return true; } /** * Finds a the set with a matching abEscLoad* escape sequence and loads it into * the designated register. * * @returns The length of the sequence on success, negative error status code on * failure. * @param pThis The decoder instance. * @param ppMapRet Used to specify C0 or C1 maps when processing * escape sequences for loading these. Only the * abEscLoadXX arrays will be searched if this is * not NULL. For loading {G0,...,G3} pass NULL. * @param pb Pointer to the start of the escape sequence. * @param cb The number of bytes remaining in the string. * @param papMaps The maps to search. * @param cMaps The number of maps @a papMaps points to. */ static int rtIso2022Decoder_FindEscAndSet(PRTISO2022DECODERSTATE pThis, PCRTISO2022MAP *ppMapRet, PCRTISO2022MAP *papMaps, uint32_t cMaps) { /* Skip the ESC.*/ uint8_t const *pb = &pThis->pabString[pThis->offString + 1]; uint32_t cb = pThis->cbString - (pThis->offString + 1); /* Cache the first char. */ uint8_t const b0 = pb[0]; /* Scan the array of maps for matching sequences. */ uint32_t i = cMaps; while (i-- > 0) { uint32_t cchMatch = 0; /* (MSC maybe used uninitialized) */ PCRTISO2022MAP pMap = papMaps[i]; /** @todo skip non-Teletex codesets if we ever add more than we need for it. */ if ( pMap->abEscLoadXX[0] == b0 && rtIso2022Decoder_MatchEscSeqFrom2ndByte(pb, cb, pMap->abEscLoadXX, sizeof(pMap->abEscLoadXX), &cchMatch) ) { if (ppMapRet) *ppMapRet = pMap; else pThis->apMapGn[0] = pMap; return cchMatch + 1; } if (!ppMapRet) /* ppMapRet is NULL if Gn. */ { uint32_t iGn; if ( pMap->abEscLoadG1[0] == b0 && rtIso2022Decoder_MatchEscSeqFrom2ndByte(pb, cb, pMap->abEscLoadG1, sizeof(pMap->abEscLoadG1), &cchMatch)) iGn = 1; else if ( pMap->abEscLoadG2[0] == b0 && rtIso2022Decoder_MatchEscSeqFrom2ndByte(pb, cb, pMap->abEscLoadG2, sizeof(pMap->abEscLoadG2), &cchMatch)) iGn = 2; else if ( pMap->abEscLoadG3[0] == b0 && rtIso2022Decoder_MatchEscSeqFrom2ndByte(pb, cb, pMap->abEscLoadG3, sizeof(pMap->abEscLoadG3), &cchMatch)) iGn = 3; else iGn = UINT32_MAX; if (iGn != UINT32_MAX) { pThis->apMapGn[iGn] = pMap; return cchMatch + 1; } } } return VERR_ASN1_TELETEX_UNSUPPORTED_CHARSET; } /** * Interprets an escape sequence. * * @returns The length of the sequence on success, negative error status code on * failure. * @param pThis The decoder instance. The offString must be * pointing to the escape byte. */ static int rtIso2022Decoder_InterpretEsc(PRTISO2022DECODERSTATE pThis) { /* the first escape byte. */ uint32_t offString = pThis->offString; if (offString + 1 >= pThis->cbString) return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: Unexpected EOS parsing ESC...", offString); int rc; switch (pThis->pabString[offString + 1]) { /* * GL selection: */ case 0x6e: /* Lock shift two: G2 -> GL */ rc = rtIso2022Decoder_SetGL(pThis, pThis->apMapGn[2]); break; case 0x6f: /* Lock shift three: G3 -> GL */ rc = rtIso2022Decoder_SetGL(pThis, pThis->apMapGn[3]); break; case 0x4e: /* Single shift two: G2 -> GL for one char. */ rc = rtIso2022Decoder_SetGLForOneChar(pThis, pThis->apMapGn[2]); break; case 0x4f: /* Single shift three: G3 -> GL for one char. */ rc = rtIso2022Decoder_SetGLForOneChar(pThis, pThis->apMapGn[3]); break; /* * GR selection: */ case 0x7e: /* Locking shift one right: G1 -> GR. */ rc = rtIso2022Decoder_SetGR(pThis, pThis->apMapGn[1]); break; case 0x7d: /* Locking shift two right: G2 -> GR. */ rc = rtIso2022Decoder_SetGR(pThis, pThis->apMapGn[2]); break; case 0x7c: /* Locking shift three right: G3 -> GR. */ rc = rtIso2022Decoder_SetGR(pThis, pThis->apMapGn[3]); break; /* * Cx selection: */ case 0x21: /* C0-designate */ return rtIso2022Decoder_FindEscAndSet(pThis, &pThis->pMapC0, g_paC0Maps, RT_ELEMENTS(g_paC0Maps)); case 0x22: /* C1-designate */ return rtIso2022Decoder_FindEscAndSet(pThis, &pThis->pMapC1, g_paC1Maps, RT_ELEMENTS(g_paC1Maps)); /* * Single-byte character set selection. */ case 0x28: /* G0-designate, 94 chars. */ case 0x29: /* G1-designate, 94 chars. */ case 0x2a: /* G2-designate, 94 chars. */ case 0x2b: /* G3-designate, 94 chars. */ return rtIso2022Decoder_FindEscAndSet(pThis, NULL, g_paGLMaps, RT_ELEMENTS(g_paGLMaps)); case 0x2c: /* G0-designate, 96 chars. */ case 0x2d: /* G1-designate, 96 chars. */ case 0x2e: /* G2-designate, 96 chars. */ case 0x2f: /* G3-designate, 96 chars. */ return rtIso2022Decoder_FindEscAndSet(pThis, NULL, g_paGRMaps, RT_ELEMENTS(g_paGRMaps)); /* * Multibyte character set selection. */ case 0x24: if (offString + 2 >= pThis->cbString) return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: Unexpected EOS parsing ESC %#x...", offString, pThis->pabString[offString + 1]); switch (pThis->pabString[offString + 2]) { case 0x28: /* G0-designate, 94^n chars. */ case 0x29: /* G1-designate, 94^n chars. */ case 0x2a: /* G2-designate, 94^n chars. */ case 0x2b: /* G3-designate, 94^n chars. */ default: /* G0-designate that skips the 0x28? (See japanese ones.) */ return rtIso2022Decoder_FindEscAndSet(pThis, NULL, g_paGLMaps, RT_ELEMENTS(g_paGLMaps)); case 0x2c: /* G0-designate, 96^n chars. */ case 0x2d: /* G1-designate, 96^n chars. */ case 0x2e: /* G2-designate, 96^n chars. */ case 0x2f: /* G3-designate, 96^n chars. */ return rtIso2022Decoder_FindEscAndSet(pThis, NULL, g_paGRMaps, RT_ELEMENTS(g_paGRMaps)); } \ break; case 0x26: /* Special escape prefix for #168. */ return rtIso2022Decoder_FindEscAndSet(pThis, NULL, g_paGLMaps, RT_ELEMENTS(g_paGLMaps)); /* * Unknown/unsupported/unimplemented. */ case 0x25: /* Designate other coding system. */ return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_TELETEX_UNSUPPORTED_ESC_SEQ, "@%u: ESC DOCS not supported\n", offString); default: return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_TELETEX_UNKNOWN_ESC_SEQ, "@%u: Unknown escape sequence: ESC %#x...\n", offString, pThis->pabString[offString + 1]); } /* Only single byte escapes sequences for shifting ends up here. */ if (RT_SUCCESS(rc)) return 1; return rc; } static int rtIso2022Decoder_ControlCharHook(PRTISO2022DECODERSTATE pThis, uint16_t wcControl) { int rc; switch (wcControl) { case 0x000e: /* Locking shift zero: G0 -> GL. */ rc = rtIso2022Decoder_SetGL(pThis, pThis->apMapGn[0]); break; case 0x000f: /* Locking shift one: G1 -> GL. */ rc = rtIso2022Decoder_SetGL(pThis, pThis->apMapGn[1]); break; case 0x008e: /* Single shift two: G2 -> GL for one char. */ rc = rtIso2022Decoder_SetGLForOneChar(pThis, pThis->apMapGn[2]); break; case 0x008f: /* Single shift three: G3 -> GL for one char. */ rc = rtIso2022Decoder_SetGLForOneChar(pThis, pThis->apMapGn[3]); break; case 0x002b: /* Escape should be handled by the caller. */ rc = rtIso2022Decoder_InterpretEsc(pThis); break; default: return 0; } return RT_SUCCESS(rc) ? 1 : rc; } static int rtIso2022Decoder_Init(PRTISO2022DECODERSTATE pThis, const char *pchString, uint32_t cchString, uint32_t uGL, uint32_t uC0, uint32_t uC1, uint32_t uG0, PRTERRINFO pErrInfo) { pThis->pabString = (uint8_t const *)pchString; pThis->cbString = cchString; pThis->offString = 0; pThis->pMapGL = &g_DummyMap; pThis->pMapGR = &g_DummyMap; pThis->pMapC0 = &g_DummyMap; pThis->pMapC1 = &g_DummyMap; pThis->pRestoreGL = NULL; pThis->apMapGn[0] = &g_DummyMap; pThis->apMapGn[1] = &g_DummyMap; pThis->apMapGn[2] = &g_DummyMap; pThis->apMapGn[3] = &g_DummyMap; pThis->pErrInfo = pErrInfo; int rc = VINF_SUCCESS; if (uGL != UINT32_MAX) rc = rtIso2022Decoder_LookupAndSet(&pThis->pMapGL, uGL, g_paGLMaps, RT_ELEMENTS(g_paGLMaps)); if (RT_SUCCESS(rc) && uG0 != UINT32_MAX) rc = rtIso2022Decoder_LookupAndSet(&pThis->apMapGn[0], uG0, g_paGLMaps, RT_ELEMENTS(g_paGLMaps)); if (RT_SUCCESS(rc) && uC0 != UINT32_MAX) rc = rtIso2022Decoder_SetC0(pThis, uC0); if (RT_SUCCESS(rc) && uC1 != UINT32_MAX) rc = rtIso2022Decoder_SetC1(pThis, uC1); return rc; } static int rtIso2022Decoder_GetNextUniCpSlow(PRTISO2022DECODERSTATE pThis, PRTUNICP pUniCp) { while (pThis->offString < pThis->cbString) { uint8_t b = pThis->pabString[pThis->offString]; if (!(b & 0x80)) { if (b >= 0x20) { /* * GL range. */ b -= 0x20; PCRTISO2022MAP pMap = pThis->pMapGL; /* Single byte character map. */ if (pMap->cb == 1) { if (RT_LIKELY(b < pMap->cToUni)) { uint16_t wc = pMap->pauToUni[b]; if (RT_LIKELY(wc != RTISO2022_UNUSED)) { *pUniCp = wc; pThis->offString += 1; return VINF_SUCCESS; } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GL b=%#x is marked unused in map #%u range %u.", pThis->offString, b + 0x20, pMap->uRegistration, pMap->cToUni); } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GL b=%#x is outside map #%u range %u.", pThis->offString, b + 0x20, pMap->uRegistration, pMap->cToUni); } /* Double byte character set. */ Assert(pMap->cb == 2); if (pThis->offString + 1 < pThis->cbString) { uint8_t b2 = pThis->pabString[pThis->offString + 1]; b2 -= 0x20; if (RT_LIKELY(b2 < 0x60)) { uint16_t u16 = ((uint16_t)b << 8) | b2; if (RT_LIKELY(u16 < pMap->cToUni)) { uint16_t wc = pMap->pauToUni[b]; if (RT_LIKELY(wc != RTISO2022_UNUSED)) { *pUniCp = wc; pThis->offString += 2; return VINF_SUCCESS; } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GL b=%#x is marked unused in map #%u.", pThis->offString, b + 0x20, pMap->uRegistration); } if (u16 >= 0x7f00) { *pUniCp = 0x7f; /* delete */ pThis->offString += 2; return VINF_SUCCESS; } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GL u16=%#x (b0=%#x b1=%#x) is outside map #%u range %u.", pThis->offString, u16, b + 0x20, b2 + 0x20, pMap->uRegistration, pMap->cToUni); } return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: 2nd GL byte outside GL range: b0=%#x b1=%#x (map #%u)", pThis->offString, b + 0x20, b2 + 0x20, pMap->uRegistration); } return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: EOS reading 2nd byte for GL b=%#x (map #%u).", pThis->offString, b + 0x20, pMap->uRegistration); } else { /* * C0 range. */ Assert(pThis->pMapC0->cb == 0x20); uint16_t wc = pThis->pMapC0->pauToUni[b]; if (wc != RTISO2022_UNUSED) { int rc; if (b == 0x1b || wc == 0x1b) /* ESC is hardcoded, or so they say. */ rc = rtIso2022Decoder_InterpretEsc(pThis); else rc = rtIso2022Decoder_ControlCharHook(pThis, wc); if (RT_SUCCESS(rc)) { if (rc == 0) { pThis->offString += 1; *pUniCp = wc; return VINF_SUCCESS; } pThis->offString += rc; } else return rc; } else return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: C0 b=%#x is marked unused in map #%u.", pThis->offString, b, pThis->pMapC0->uRegistration); } } else { if (b >= 0xa0) { /* * GR range. */ b -= 0xa0; PCRTISO2022MAP pMap = pThis->pMapGR; /* Single byte character map. */ if (pMap->cb == 1) { /** @todo 0xa0 = SPACE and 0xff = DELETE if it's a 94 charater map... */ if (RT_LIKELY(b < pMap->cToUni)) { uint16_t wc = pMap->pauToUni[b]; if (RT_LIKELY(wc != RTISO2022_UNUSED)) { *pUniCp = wc; pThis->offString += 1; return VINF_SUCCESS; } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GR b=%#x is marked unused in map #%u.", pThis->offString, b + 0xa0, pMap->uRegistration); } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GR b=%#x is outside map #%u range %u", pThis->offString, b + 0xa0, pMap->uRegistration, pMap->cToUni); } /* Double byte character set. */ Assert(pMap->cb == 2); if (pThis->offString + 1 < pThis->cbString) { uint8_t b2 = pThis->pabString[pThis->offString + 1]; b2 -= 0xa0; if (RT_LIKELY(b2 < 0x60)) { uint16_t u16 = ((uint16_t)b << 8) | b2; if (RT_LIKELY(u16 < pMap->cToUni)) { uint16_t wc = pMap->pauToUni[b]; if (RT_LIKELY(wc != RTISO2022_UNUSED)) { *pUniCp = wc; pThis->offString += 2; return VINF_SUCCESS; } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GR b=%#x is marked unused in map #%u.", pThis->offString, b + 0xa0, pMap->uRegistration); } *pUniCp = RTUNICP_INVALID; return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: GR u16=%#x (b0=%#x b1=%#x) is outside map #%u range %u.", pThis->offString, u16, b + 0xa0, b2 + 0xa0, pMap->uRegistration, pMap->cToUni); } return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: 2nd GR byte outside GR range: b0=%#x b1=%#x (map #%u).", pThis->offString, b + 0xa0, b2 + 0xa0, pMap->uRegistration); } return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: EOS reading 2nd byte for GR b=%#x (map #%u).", pThis->offString, b + 0xa0, pMap->uRegistration); } else { /* * C2 range. */ Assert(pThis->pMapC1->cb == 0x20); b -= 0x80; uint16_t wc = pThis->pMapC1->pauToUni[b]; if (wc != RTISO2022_UNUSED) { int rc = rtIso2022Decoder_ControlCharHook(pThis, wc); if (RT_SUCCESS(rc)) { if (rc == 0) { pThis->offString += 1; *pUniCp = wc; return VINF_SUCCESS; } pThis->offString += rc; } else return rc; } else return RTErrInfoSetF(pThis->pErrInfo, VERR_ASN1_INVALID_T61_STRING_ENCODING, "@%u: C1 b=%#x is marked unused in map #%u.", pThis->offString, b + 0x80, pThis->pMapC1->uRegistration); } } } /* End of string. */ *pUniCp = RTUNICP_INVALID; return VERR_END_OF_STRING; } DECLINLINE(int) rtIso2022Decoder_GetNextUniCp(PRTISO2022DECODERSTATE pThis, PRTUNICP pUniCp) { /* * Deal with single byte GL. */ uint32_t const offString = pThis->offString; if (pThis->offString < pThis->cbString) { PCRTISO2022MAP const pMapGL = pThis->pMapGL; if (pMapGL->cb == 1) { uint8_t const b = pThis->pabString[offString] - (uint8_t)0x20; if (b < pMapGL->cToUni) { uint16_t wc = pMapGL->pauToUni[b]; if (wc != RTISO2022_UNUSED) { pThis->offString = offString + 1; *pUniCp = wc; return VINF_SUCCESS; } } } /* * Deal with complications in the non-inline function. */ return rtIso2022Decoder_GetNextUniCpSlow(pThis, pUniCp); } *pUniCp = RTUNICP_INVALID; return VERR_END_OF_STRING; } static int rtIso2022ValidateString(uint32_t uProfile, const char *pch, uint32_t cch, size_t *pcchUtf8, PRTERRINFO pErrInfo) { AssertReturn(uProfile == ASN1_TAG_T61_STRING, VERR_INVALID_PARAMETER); /* just a place holder for now. */ RTISO2022DECODERSTATE Decoder; int rc = rtIso2022Decoder_Init(&Decoder, pch, cch, 102, 106, 107, 102, pErrInfo); if (RT_SUCCESS(rc)) { size_t cchUtf8 = 0; for (;;) { RTUNICP uc; rc = rtIso2022Decoder_GetNextUniCp(&Decoder, &uc); if (RT_SUCCESS(rc)) cchUtf8 += RTStrCpSize(uc); else { if (RT_LIKELY(rc == VERR_END_OF_STRING)) { *pcchUtf8 = cchUtf8; return VINF_SUCCESS; } return rc; } } } return rc; } static int rtIso2022RecodeAsUtf8(uint32_t uProfile, const char *pchSrc, uint32_t cchSrc, char *pszDst, size_t cbDst) { AssertReturn(uProfile == ASN1_TAG_T61_STRING, VERR_INVALID_PARAMETER); /* just a place holder for now. */ AssertReturn(cbDst > 0, VERR_INVALID_PARAMETER); RTISO2022DECODERSTATE Decoder; int rc = rtIso2022Decoder_Init(&Decoder, pchSrc, cchSrc, 102, 106, 107, 102, NULL /*pErrInfo*/); if (RT_SUCCESS(rc)) { for (;;) { RTUNICP uc; rc = rtIso2022Decoder_GetNextUniCp(&Decoder, &uc); if (RT_SUCCESS(rc)) { if (uc < 0x80 && cbDst > 1) { *pszDst++ = (char)uc; cbDst--; } else { size_t cchUniCp = RTStrCpSize(uc); if (cbDst > cchUniCp) { cbDst -= cchUniCp; pszDst = RTStrPutCp(pszDst, uc); } else { *pszDst = '\0'; return VERR_BUFFER_OVERFLOW; } } } else if (RT_LIKELY(rc == VERR_END_OF_STRING)) { *pszDst = '\0'; return VINF_SUCCESS; } else return rc; } } return rc; } /** The unicode mapping of the C1 area of windows codepage 1252. * The rest of the code page is 1:1 with unicode. */ static uint16_t g_awcWin1252_C1[0x20] = { 0x20ac, 0x0081, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021, 0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0x008d, 0x017d, 0x008f, 0x0090, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014, 0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0x009d, 0x017e, 0x0178, }; static size_t rtWin1252CalcUtf8Length(const char *pch, uint32_t cch) { size_t cchUtf8 = 0; while (cch-- > 0) { uint8_t const b = *pch++; if (b < 0x80) cchUtf8 += 1; else if (b >= 0xa0) cchUtf8 += 2; else { uint16_t const wc = g_awcWin1252_C1[b - 0x80]; cchUtf8 += RTStrCpSize(wc); } } return cchUtf8; } static int rtWin1252RecodeAsUtf8(const char *pchSrc, uint32_t cchSrc, char *pszDst, size_t cbDst) { while (cchSrc-- > 0) { uint8_t b = *pchSrc++; if (b < 0x80) { if (cbDst <= 1) return VERR_BUFFER_OVERFLOW; *pszDst++ = (char)b; } else { uint16_t const wc = b >= 0xa0 ? b : g_awcWin1252_C1[b - 0x80]; size_t cchCp = RTStrCpSize(wc); if (cbDst <= cchCp) return VERR_BUFFER_OVERFLOW; pszDst = RTStrPutCp(pszDst, wc); } } if (!cbDst) return VERR_BUFFER_OVERFLOW; *pszDst = '\0'; return VINF_SUCCESS; } /* * ASN.1 STRING - Specific Methods. */ /** rtAsn1String_IsTeletexLatin1 results. */ typedef enum RTASN1TELETEXVARIANT { /** Couldn't find hard evidence of either. */ RTASN1TELETEXVARIANT_UNDECIDED = 1, /** Pretty certain that it's real teletex. */ RTASN1TELETEXVARIANT_TELETEX, /** Pretty sure it's latin-1 or Windows-1252. */ RTASN1TELETEXVARIANT_LATIN1, /** Pretty sure it's Windows-1252. */ RTASN1TELETEXVARIANT_WIN_1252 } RTASN1TELETEXVARIANT; /** * Takes a guess as whether TELETEX STRING (T61 STRING) is actually is Latin-1 * or the real thing. * * According to RFC-2459, section 4.1.2.4, various libraries, certificate * authorities and others have perverted the TeletexString/T61String tag by * ISO-8859-1 (aka latin-1) strings (more probably these are actually Windows * CP-1252 rather than latin-1). We'll try detect incompatible latin-1 * perversions by: * - The use of GR (0xf0-0xff) chars. * - The lack of ESC sequences and shifts (LS0,LS1,SS2,SS3) * * An ASSUMTION here is that GR is not loaded with anything at the start of a * teletex string, as per table 3 in section 8.23.5.2 in T-REC-X.590.200811. * * @retval @c true if chances are good that it's LATIN-1. * @retval @c false if changes are very good that it's real teletex. * @param pch The first char in the string. * @param cch The string length. * * @remarks Useful info on Teletex and ISO/IEC-2022: * https://www.mail-archive.com/asn1@asn1.org/msg00460.html * http://en.wikipedia.org/wiki/ISO/IEC_2022 * http://www.open-std.org/cen/tc304/guide/GCONCEPT.HTM * http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-035.pdf */ static RTASN1TELETEXVARIANT rtAsn1String_IsTeletexLatin1(const char *pch, uint32_t cch) { RTASN1TELETEXVARIANT enmVariant = RTASN1TELETEXVARIANT_UNDECIDED; while (cch-- > 0) { uint8_t const b = *pch; if (b >= 0x20 && b <= 0x7f) { if (g_awcIsoIr102Decode[b - 0x20] == RTISO2022_UNUSED) enmVariant = RTASN1TELETEXVARIANT_LATIN1; } else { if ( b == 0x1b /* ESC */ || b == 0x0e /* LS0 / SI */ || b == 0x0f /* LS1 / SO */ || b == 0x19 /* SS2 */ || b == 0x1d /* SS3 */ ) return RTASN1TELETEXVARIANT_TELETEX; if (b >= 0xa0) enmVariant = RTASN1TELETEXVARIANT_LATIN1; else if (b >= 0x80 && b <= 0x9f) { /* Any use of C1 characters defined by windows cp-1252 will lead us to believe it's the windows code rather than the ISO/IEC standard that is being used. (Not that it makes much of a difference, because we're gonna treat it as the windows codepage, anyways.) */ if ( b != 0x81 && b != 0x8d && b != 0x8f && b != 0x90 && b != 0x9d) return RTASN1TELETEXVARIANT_WIN_1252; } } } return RTASN1TELETEXVARIANT_UNDECIDED; } /** * Checks the encoding of an ASN.1 string according to it's tag. * * @returns IPRT status code. * @param pThis The string to santity check. * @param pErrInfo Where to store extra error info. Optional. * @param pcchUtf8 Where to return the UTF-8 string length. Optional. */ static int rtAsn1String_CheckSanity(PCRTASN1STRING pThis, PRTERRINFO pErrInfo, const char *pszErrorTag, size_t *pcchUtf8) { int rc; uint32_t cch = pThis->Asn1Core.cb; size_t cchUtf8 = cch; const char *pch = pThis->Asn1Core.uData.pch; uint32_t uTag = RTASN1CORE_GET_TAG(&pThis->Asn1Core); switch (uTag) { case ASN1_TAG_UTF8_STRING: rc = RTStrValidateEncodingEx(pch, cch, 0); if (RT_SUCCESS(rc)) break; return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_UTF8_STRING_ENCODING, "%s: Bad UTF-8 encoding (%Rrc)", pszErrorTag, rc); case ASN1_TAG_NUMERIC_STRING: while (cch-- > 0) { char ch = *pch++; if ( !RT_C_IS_DIGIT(ch) && ch != ' ') return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_NUMERIC_STRING_ENCODING, "%s: Bad numberic string: ch=%#x", pszErrorTag, ch); } break; case ASN1_TAG_PRINTABLE_STRING: while (cch-- > 0) { char ch = *pch++; if ( !RT_C_IS_ALNUM(ch) && ch != ' ' && ch != '\'' && ch != '(' && ch != ')' && ch != '+' && ch != ',' && ch != '-' && ch != '.' && ch != '/' && ch != ':' && ch != '=' && ch != '?' ) return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_PRINTABLE_STRING_ENCODING, "%s: Bad printable string: ch=%#x", pszErrorTag, ch); } break; case ASN1_TAG_IA5_STRING: /* ASCII */ while (cch-- > 0) { unsigned char ch = *pch++; if (ch == 0 || ch >= 0x80) return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_IA5_STRING_ENCODING, "%s: Bad IA5 string: ch=%#x", pszErrorTag, ch); } break; case ASN1_TAG_T61_STRING: switch (rtAsn1String_IsTeletexLatin1(pch, cch)) { default: rc = rtIso2022ValidateString(ASN1_TAG_T61_STRING, pch, cch, &cchUtf8, pErrInfo); if (RT_FAILURE(rc)) return rc; break; case RTASN1TELETEXVARIANT_UNDECIDED: case RTASN1TELETEXVARIANT_LATIN1: case RTASN1TELETEXVARIANT_WIN_1252: cchUtf8 = rtWin1252CalcUtf8Length(pch, cch); break; } break; case ASN1_TAG_VIDEOTEX_STRING: case ASN1_TAG_GRAPHIC_STRING: return VERR_ASN1_STRING_TYPE_NOT_IMPLEMENTED; case ASN1_TAG_VISIBLE_STRING: while (cch-- > 0) { unsigned char ch = *pch++; if (ch < 0x20 || ch >= 0x7f) return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_VISIBLE_STRING_ENCODING, "%s: Bad visible string: ch=%#x", pszErrorTag, ch); } break; case ASN1_TAG_GENERAL_STRING: return VERR_ASN1_STRING_TYPE_NOT_IMPLEMENTED; case ASN1_TAG_UNIVERSAL_STRING: if (!(cch & 3)) { uint8_t const *pb = (uint8_t const *)pch; cchUtf8 = 0; while (cch > 0) { RTUNICP uc = RT_MAKE_U32_FROM_U8(pb[3], pb[2], pb[1], pb[0]); /* big endian */ if (!RTUniCpIsValid(uc)) return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_UNIVERSAL_STRING_ENCODING, "%s: Bad universal string: uc=%#x", pszErrorTag, uc); cchUtf8 += RTUniCpCalcUtf8Len(uc); /* next */ pb += 4; cch -= 4; } break; } return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_UNIVERSAL_STRING_ENCODING, "%s: Bad universal string: size not a multiple of 4: cch=%#x", pszErrorTag, cch); case ASN1_TAG_BMP_STRING: if (!(cch & 1)) { uint8_t const *pb = (uint8_t const *)pch; cchUtf8 = 0; while (cch > 0) { RTUNICP uc = RT_MAKE_U32_FROM_U8(pb[1], pb[0], 0, 0); /* big endian */ if (!RTUniCpIsValid(uc)) return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_BMP_STRING_ENCODING, "%s: Bad BMP string: uc=%#x", pszErrorTag, uc); cchUtf8 += RTUniCpCalcUtf8Len(uc); /* next */ pb += 2; cch -= 2; } break; } return RTErrInfoSetF(pErrInfo, VERR_ASN1_INVALID_BMP_STRING_ENCODING, "%s: Bad BMP string: odd number of bytes cch=%#x", pszErrorTag, cch); default: AssertMsgFailedReturn(("uTag=%#x\n", uTag), VERR_INTERNAL_ERROR_3); } if (pcchUtf8) *pcchUtf8 = cchUtf8; return VINF_SUCCESS; } RTDECL(int) RTAsn1String_CompareValues(PCRTASN1STRING pLeft, PCRTASN1STRING pRight) { return RTAsn1String_CompareEx(pLeft, pRight, false /*fTypeToo*/); } RTDECL(int) RTAsn1String_CompareEx(PCRTASN1STRING pLeft, PCRTASN1STRING pRight, bool fTypeToo) { Assert(pLeft && (!RTAsn1String_IsPresent(pLeft) || pLeft->Asn1Core.pOps == &g_RTAsn1String_Vtable)); Assert(pRight && (!RTAsn1String_IsPresent(pRight) || pRight->Asn1Core.pOps == &g_RTAsn1String_Vtable)); int iDiff; if (RTAsn1String_IsPresent(pLeft)) { if (RTAsn1String_IsPresent(pRight)) { if (!fTypeToo || RTASN1CORE_GET_TAG(&pLeft->Asn1Core) == RTASN1CORE_GET_TAG(&pRight->Asn1Core)) iDiff = RTAsn1Core_CompareEx(&pLeft->Asn1Core, &pRight->Asn1Core, true /*fIgnoreTagAndClass*/); else iDiff = RTASN1CORE_GET_TAG(&pLeft->Asn1Core) < RTASN1CORE_GET_TAG(&pRight->Asn1Core) ? -1 : 1; } else iDiff = 1; } else iDiff = 0 - RTAsn1String_IsPresent(pRight); return iDiff; } RTDECL(int) RTAsn1String_CompareWithString(PCRTASN1STRING pThis, const char *pszString, size_t cchString) { Assert(pThis && (!RTAsn1String_IsPresent(pThis) || pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable)); AssertPtr(pszString); int iDiff; if (RTAsn1String_IsPresent(pThis)) { if (cchString == RTSTR_MAX) cchString = strlen(pszString); /* * If there is a UTF-8 conversion available already, use it. */ if (pThis->pszUtf8) { iDiff = strncmp(pThis->pszUtf8, pszString, cchString); if (!iDiff && pThis->cchUtf8 != cchString) iDiff = pThis->cchUtf8 < cchString ? -1 : 1; } else { /* * Some types are UTF-8 compatible, so try do the compare without * RTAsn1String_QueryUtf8. */ uint32_t cch = pThis->Asn1Core.cb; const char *pch = pThis->Asn1Core.uData.pch; switch (RTASN1CORE_GET_TAG(&pThis->Asn1Core)) { case ASN1_TAG_UTF8_STRING: case ASN1_TAG_NUMERIC_STRING: case ASN1_TAG_IA5_STRING: case ASN1_TAG_PRINTABLE_STRING: iDiff = strncmp(pch, pszString, RT_MIN(cch, cchString)); if (iDiff && cch != cchString) iDiff = cch < cchString ? - 1 : 1; break; /** @todo Implement comparing ASN1_TAG_BMP_STRING, ASN1_TAG_UNIVERSAL_STRING and * ASN1_TAG_T61_STRING with UTF-8 strings without conversion. */ default: { int rc = RTAsn1String_QueryUtf8(pThis, NULL, NULL); if (RT_SUCCESS(rc)) { iDiff = strncmp(pThis->pszUtf8, pszString, cchString); if (!iDiff && pThis->cchUtf8 != cchString) iDiff = pThis->cchUtf8 < cchString ? -1 : 1; } else iDiff = -1; break; } } } /* Reduce the strcmp return value. */ if (iDiff != 0) iDiff = iDiff < 0 ? -1 : 1; } else iDiff = -1; return iDiff; } RTDECL(int) RTAsn1String_QueryUtf8(PCRTASN1STRING pThis, const char **ppsz, size_t *pcch) { Assert(pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable); char *psz = (char *)pThis->pszUtf8; size_t cch = pThis->cchUtf8; if (!psz) { /* * Convert the first time around. Start by validating the encoding and * calculating the length. */ int rc = rtAsn1String_CheckSanity(pThis, NULL, NULL, &cch); if (RT_SUCCESS(rc)) { PRTASN1STRING pThisNC = (PRTASN1STRING)pThis; rc = RTAsn1MemAllocZ(&pThisNC->Allocation, (void **)&psz, cch + 1); if (RT_SUCCESS(rc)) { /* * Got memory, now do the actual convertion to UTF-8 / copying. */ switch (RTASN1CORE_GET_TAG(&pThis->Asn1Core)) { case ASN1_TAG_UTF8_STRING: case ASN1_TAG_NUMERIC_STRING: case ASN1_TAG_PRINTABLE_STRING: case ASN1_TAG_IA5_STRING: case ASN1_TAG_VISIBLE_STRING: Assert(cch == pThis->Asn1Core.cb); memcpy(psz, pThis->Asn1Core.uData.pch, cch); psz[cch] = '\0'; break; case ASN1_TAG_T61_STRING: switch (rtAsn1String_IsTeletexLatin1(pThis->Asn1Core.uData.pch, pThis->Asn1Core.cb)) { default: rc = rtIso2022RecodeAsUtf8(ASN1_TAG_T61_STRING, pThis->Asn1Core.uData.pch, pThis->Asn1Core.cb, psz, cch + 1); break; case RTASN1TELETEXVARIANT_UNDECIDED: case RTASN1TELETEXVARIANT_LATIN1: case RTASN1TELETEXVARIANT_WIN_1252: rc = rtWin1252RecodeAsUtf8(pThis->Asn1Core.uData.pch, pThis->Asn1Core.cb, psz, cch + 1); break; } AssertReturnStmt(RT_SUCCESS(rc), RTAsn1MemFree(&pThisNC->Allocation, psz), VERR_INTERNAL_ERROR_3); break; /* case ASN1_TAG_VIDEOTEX_STRING: */ /* case ASN1_TAG_GRAPHIC_STRING: */ /* case ASN1_TAG_GENERAL_STRING: */ case ASN1_TAG_UNIVERSAL_STRING: { char *pszDst = psz; size_t cchSrc = pThis->Asn1Core.cb; uint8_t const *pbSrc = pThis->Asn1Core.uData.pu8; while (cchSrc > 0) { RTUNICP uc = RT_MAKE_U32_FROM_U8(pbSrc[3], pbSrc[2], pbSrc[1], pbSrc[0]); /* big endian */ AssertReturnStmt(RTUniCpIsValid(uc), RTAsn1MemFree(&pThisNC->Allocation, psz), VERR_INTERNAL_ERROR_2); pszDst = RTStrPutCp(pszDst, uc); /* next */ pbSrc += 4; cchSrc -= 4; } Assert((size_t)(pszDst - psz) == cch); break; } case ASN1_TAG_BMP_STRING: { char *pszDst = psz; size_t cchSrc = pThis->Asn1Core.cb; uint8_t const *pbSrc = pThis->Asn1Core.uData.pu8; while (cchSrc > 0) { RTUNICP uc = RT_MAKE_U32_FROM_U8(pbSrc[1], pbSrc[0], 0, 0); /* big endian */ AssertReturnStmt(RTUniCpIsValid(uc), RTAsn1MemFree(&pThisNC->Allocation, psz), VERR_INTERNAL_ERROR_2); pszDst = RTStrPutCp(pszDst, uc); /* next */ pbSrc += 2; cchSrc -= 2; } Assert((size_t)(pszDst - psz) == cch); break; } default: RTAsn1MemFree(&pThisNC->Allocation, psz); AssertMsgFailedReturn(("uTag=%#x\n", RTASN1CORE_GET_TAG(&pThis->Asn1Core)), VERR_INTERNAL_ERROR_3); } /* * Successfully produced UTF-8. Save it in the object. */ pThisNC->pszUtf8 = psz; pThisNC->cchUtf8 = (uint32_t)cch; } else return rc; } else return rc; } /* * Success. */ if (ppsz) *ppsz = psz; if (pcch) *pcch = cch; return VINF_SUCCESS; } RTDECL(int) RTAsn1String_QueryUtf8Len(PCRTASN1STRING pThis, size_t *pcch) { Assert(pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable); size_t cch = pThis->cchUtf8; if (!cch && !pThis->pszUtf8) { int rc = rtAsn1String_CheckSanity(pThis, NULL, NULL, &cch); if (RT_FAILURE(rc)) return rc; } *pcch = cch; return VINF_SUCCESS; } RTDECL(int) RTAsn1String_InitEx(PRTASN1STRING pThis, uint32_t uTag, void const *pvValue, size_t cbValue, PCRTASN1ALLOCATORVTABLE pAllocator) { RT_ZERO(*pThis); AssertMsgReturn(uTag < RT_ELEMENTS(g_acbStringTags) && g_acbStringTags[uTag] > 0, ("uTag=%#x\n", uTag), VERR_INVALID_PARAMETER); RTAsn1MemInitAllocation(&pThis->Allocation, pAllocator); RTAsn1Core_InitEx(&pThis->Asn1Core, uTag, ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE, &g_RTAsn1String_Vtable, RTASN1CORE_F_PRESENT | RTASN1CORE_F_PRIMITE_TAG_STRUCT); if (cbValue > 0) { int rc = RTAsn1ContentDup(&pThis->Asn1Core, pvValue, cbValue, pAllocator); if (RT_FAILURE(rc)) return rc; } return VINF_SUCCESS; } RTDECL(int) RTAsn1String_InitWithValue(PRTASN1STRING pThis, const char *pszUtf8Value, PCRTASN1ALLOCATORVTABLE pAllocator) { Assert(RTStrValidateEncoding(pszUtf8Value)); return RTAsn1String_InitEx(pThis, ASN1_TAG_UTF8_STRING, pszUtf8Value, strlen(pszUtf8Value), pAllocator); } RTDECL(int) RTAsn1String_RecodeAsUtf8(PRTASN1STRING pThis, PCRTASN1ALLOCATORVTABLE pAllocator) { /* * Query the UTF-8 string. Do this even if it's already an * ASN1_TAG_UTF8_STRING object as it makes sure we've got a valid UTF-8 * string upon successful return. */ int rc = RTAsn1String_QueryUtf8(pThis, NULL, NULL); if (RT_SUCCESS(rc)) { if (RTASN1CORE_GET_TAG(&pThis->Asn1Core) != ASN1_TAG_UTF8_STRING) { /* * Resize the content, copy the UTF-8 bytes in there, and change * the tag. */ rc = RTAsn1ContentReallocZ(&pThis->Asn1Core, pThis->cchUtf8, pAllocator); if (RT_SUCCESS(rc)) { memcpy((void *)pThis->Asn1Core.uData.pv, pThis->pszUtf8, pThis->cchUtf8); rc = RTAsn1Core_ChangeTag(&pThis->Asn1Core, ASN1_TAG_UTF8_STRING); } } } return rc; } /* * ASN.1 STRING - Standard Methods. */ RT_DECL_DATA_CONST(RTASN1COREVTABLE const) g_RTAsn1String_Vtable = { "RTAsn1String", sizeof(RTASN1STRING), UINT8_MAX, ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_PRIMITIVE, 0, (PFNRTASN1COREVTDTOR)RTAsn1String_Delete, NULL, (PFNRTASN1COREVTCLONE)RTAsn1String_Clone, (PFNRTASN1COREVTCOMPARE)RTAsn1String_Compare, (PFNRTASN1COREVTCHECKSANITY)RTAsn1String_CheckSanity, NULL, NULL }; RTDECL(int) RTAsn1String_Init(PRTASN1STRING pThis, PCRTASN1ALLOCATORVTABLE pAllocator) { return RTAsn1String_InitEx(pThis, ASN1_TAG_UTF8_STRING, NULL /*pvValue*/, 0 /*cbValue*/, pAllocator); } RTDECL(int) RTAsn1String_Clone(PRTASN1STRING pThis, PCRTASN1STRING pSrc, PCRTASN1ALLOCATORVTABLE pAllocator) { AssertPtr(pSrc); AssertPtr(pThis); AssertPtr(pAllocator); RT_ZERO(*pThis); if (RTAsn1String_IsPresent(pSrc)) { AssertReturn(pSrc->Asn1Core.pOps == &g_RTAsn1String_Vtable, VERR_INTERNAL_ERROR_3); int rc = RTAsn1Core_CloneContent(&pThis->Asn1Core, &pSrc->Asn1Core, pAllocator); if (RT_SUCCESS(rc)) { /* Don't copy the UTF-8 representation, decode it when queried. */ RTAsn1MemInitAllocation(&pThis->Allocation, pAllocator); return VINF_SUCCESS; } } return VINF_SUCCESS; } RTDECL(void) RTAsn1String_Delete(PRTASN1STRING pThis) { if ( pThis && RTAsn1String_IsPresent(pThis)) { Assert(pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable); if (pThis->Allocation.cbAllocated) RTAsn1MemFree(&pThis->Allocation, (char *)pThis->pszUtf8); RTAsn1ContentFree(&pThis->Asn1Core); RT_ZERO(*pThis); } } RTDECL(int) RTAsn1String_Enum(PRTASN1STRING pThis, PFNRTASN1ENUMCALLBACK pfnCallback, uint32_t uDepth, void *pvUser) { RT_NOREF_PV(pThis); RT_NOREF_PV(pfnCallback); RT_NOREF_PV(uDepth); RT_NOREF_PV(pvUser); Assert(pThis && (!RTAsn1String_IsPresent(pThis) || pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable)); /* No children to enumerate. */ return VINF_SUCCESS; } RTDECL(int) RTAsn1String_Compare(PCRTASN1STRING pLeft, PCRTASN1STRING pRight) { /* Compare tag and binary value. */ return RTAsn1String_CompareEx(pLeft, pRight, true /*fTypeToo*/); } RTDECL(int) RTAsn1String_CheckSanity(PCRTASN1STRING pThis, uint32_t fFlags, PRTERRINFO pErrInfo, const char *pszErrorTag) { RT_NOREF_PV(fFlags); if (RT_UNLIKELY(!RTAsn1String_IsPresent(pThis))) return RTErrInfoSetF(pErrInfo, VERR_ASN1_NOT_PRESENT, "%s: Missing (STRING).", pszErrorTag); return rtAsn1String_CheckSanity(pThis, pErrInfo, pszErrorTag, NULL /*pcchUtf8*/); } /* * Generate code for the tag specific methods. * Note! This is very similar to what we're doing in asn1-ut-time.cpp. */ #define RTASN1STRING_IMPL(a_uTag, a_szTag, a_Api) \ \ RTDECL(int) RT_CONCAT(a_Api,_Init)(PRTASN1STRING pThis, PCRTASN1ALLOCATORVTABLE pAllocator) \ { \ return RTAsn1String_InitEx(pThis, a_uTag, NULL /*pvValue*/, 0 /*cbValue*/, pAllocator); \ } \ \ RTDECL(int) RT_CONCAT(a_Api,_Clone)(PRTASN1STRING pThis, PCRTASN1STRING pSrc, PCRTASN1ALLOCATORVTABLE pAllocator) \ { \ AssertReturn(RTASN1CORE_GET_TAG(&pSrc->Asn1Core) == a_uTag || !RTAsn1String_IsPresent(pSrc), \ VERR_ASN1_STRING_TAG_MISMATCH); \ return RTAsn1String_Clone(pThis, pSrc, pAllocator); \ } \ \ RTDECL(void) RT_CONCAT(a_Api,_Delete)(PRTASN1STRING pThis) \ { \ Assert( !pThis \ || !RTAsn1String_IsPresent(pThis) \ || ( pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable \ && RTASN1CORE_GET_TAG(&pThis->Asn1Core) == a_uTag) ); \ RTAsn1String_Delete(pThis); \ } \ \ RTDECL(int) RT_CONCAT(a_Api,_Enum)(PRTASN1STRING pThis, PFNRTASN1ENUMCALLBACK pfnCallback, uint32_t uDepth, void *pvUser) \ { \ RT_NOREF_PV(pThis); RT_NOREF_PV(pfnCallback); RT_NOREF_PV(uDepth); RT_NOREF_PV(pvUser); \ Assert( pThis \ && ( !RTAsn1String_IsPresent(pThis) \ || ( pThis->Asn1Core.pOps == &g_RTAsn1String_Vtable \ && RTASN1CORE_GET_TAG(&pThis->Asn1Core) == a_uTag) ) ); \ /* No children to enumerate. */ \ return VINF_SUCCESS; \ } \ \ RTDECL(int) RT_CONCAT(a_Api,_Compare)(PCRTASN1STRING pLeft, PCRTASN1STRING pRight) \ { \ int iDiff = RTAsn1String_CompareEx(pLeft, pRight, true /*fTypeToo*/); \ if (!iDiff && RTASN1CORE_GET_TAG(&pLeft->Asn1Core) != a_uTag && RTAsn1String_IsPresent(pLeft)) \ iDiff = RTASN1CORE_GET_TAG(&pLeft->Asn1Core) < a_uTag ? -1 : 1; \ return iDiff; \ } \ \ RTDECL(int) RT_CONCAT(a_Api,_CheckSanity)(PCRTASN1STRING pThis, uint32_t fFlags, \ PRTERRINFO pErrInfo, const char *pszErrorTag) \ { \ if (RTASN1CORE_GET_TAG(&pThis->Asn1Core) != a_uTag && RTAsn1String_IsPresent(pThis)) \ return RTErrInfoSetF(pErrInfo, VERR_ASN1_STRING_TAG_MISMATCH, "%s: uTag=%#x, expected %#x (%s)", \ pszErrorTag, RTASN1CORE_GET_TAG(&pThis->Asn1Core), a_uTag, a_szTag); \ return RTAsn1String_CheckSanity(pThis, fFlags, pErrInfo, pszErrorTag); \ } #include "asn1-ut-string-template2.h" /* * Generate code for the associated collection types. */ #define RTASN1TMPL_TEMPLATE_FILE "../common/asn1/asn1-ut-string-template.h" #include #include #include #include