| 1 | /* $Id: TextScript.cpp 90828 2021-08-24 09:44:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * Classes for reading/parsing/saving text scripts (unattended installation, ++).
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*********************************************************************************************************************************
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| 20 | * Header Files *
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| 21 | *********************************************************************************************************************************/
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| 22 | #define LOG_GROUP LOG_GROUP_MAIN_UNATTENDED
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| 23 | #include "LoggingNew.h"
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| 24 | #include "TextScript.h"
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| 25 |
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| 26 | #include <VBox/err.h>
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| 27 |
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| 28 | #include <iprt/ctype.h>
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| 29 | #include <iprt/file.h>
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| 30 | #include <iprt/vfs.h>
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| 31 | #include <iprt/path.h>
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| 32 |
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| 33 | using namespace std;
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| 34 |
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| 35 |
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| 36 | /*********************************************************************************************************************************
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| 37 | * BaseTextScript Implementation *
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| 38 | *********************************************************************************************************************************/
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| 39 |
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| 40 | HRESULT BaseTextScript::read(const Utf8Str &rStrFilename)
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| 41 | {
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| 42 | /*
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| 43 | * Open the file for reading and figure it's size. Capping the size
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| 44 | * at 16MB so we don't exaust the heap on bad input.
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| 45 | */
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| 46 | HRESULT hrc;
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| 47 | RTVFSFILE hVfsFile;
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| 48 | int vrc = RTVfsFileOpenNormal(rStrFilename.c_str(), RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE, &hVfsFile);
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| 49 | if (RT_SUCCESS(vrc))
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| 50 | {
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| 51 | hrc = readFromHandle(hVfsFile, rStrFilename.c_str());
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| 52 | RTVfsFileRelease(hVfsFile);
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| 53 | }
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| 54 | else
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| 55 | hrc = mpSetError->setErrorVrc(vrc, tr("Failed to open '%s' (%Rrc)"), rStrFilename.c_str(), vrc);
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| 56 | return hrc;
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| 57 | }
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| 58 |
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| 59 | HRESULT BaseTextScript::readFromHandle(RTVFSFILE hVfsFile, const char *pszFilename)
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| 60 | {
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| 61 | /*
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| 62 | * Open the file for reading and figure it's size. Capping the size
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| 63 | * at 16MB so we don't exaust the heap on bad input.
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| 64 | */
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| 65 | HRESULT hrc;
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| 66 | uint64_t cbFile = 0;
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| 67 | int vrc = RTVfsFileQuerySize(hVfsFile, &cbFile);
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| 68 | if ( RT_SUCCESS(vrc)
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| 69 | && cbFile < _16M)
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| 70 | {
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| 71 | /*
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| 72 | * Exploint the jolt() feature of RTCString and read the content directly into
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| 73 | * its storage buffer.
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| 74 | */
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| 75 | vrc = mStrScriptFullContent.reserveNoThrow((size_t)cbFile + 1);
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| 76 | if (RT_SUCCESS(vrc))
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| 77 | {
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| 78 | char *pszDst = mStrScriptFullContent.mutableRaw();
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| 79 | vrc = RTVfsFileReadAt(hVfsFile, 0 /*off*/, pszDst, (size_t)cbFile, NULL);
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| 80 | pszDst[(size_t)cbFile] = '\0';
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| 81 | if (RT_SUCCESS(vrc))
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| 82 | {
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| 83 | /*
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| 84 | * We must validate the encoding or we'll be subject to potential security trouble.
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| 85 | * If this turns out to be problematic, we will need to implement codeset
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| 86 | * conversion coping mechanisms.
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| 87 | */
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| 88 | vrc = RTStrValidateEncodingEx(pszDst, (size_t)cbFile + 1,
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| 89 | RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED | RTSTR_VALIDATE_ENCODING_EXACT_LENGTH);
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| 90 | if (RT_SUCCESS(vrc))
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| 91 | {
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| 92 | mStrScriptFullContent.jolt();
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| 93 | return S_OK;
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| 94 | }
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| 95 |
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| 96 | hrc = mpSetError->setErrorVrc(vrc, tr("'%s' isn't valid UTF-8: %Rrc"), pszFilename, vrc);
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| 97 | }
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| 98 | else
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| 99 | hrc = mpSetError->setErrorVrc(vrc, tr("Error reading '%s': %Rrc"), pszFilename, vrc);
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| 100 | mStrScriptFullContent.setNull();
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| 101 | }
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| 102 | else
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| 103 | hrc = mpSetError->setErrorVrc(vrc, tr("Failed to allocate memory (%'RU64 bytes) for '%s'"),
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| 104 | cbFile, pszFilename);
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| 105 | }
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| 106 | else if (RT_SUCCESS(vrc))
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| 107 | hrc = mpSetError->setErrorVrc(VERR_FILE_TOO_BIG, tr("'%s' is too big (max 16MB): %'RU64"), pszFilename, cbFile);
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| 108 | else
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| 109 | hrc = mpSetError->setErrorVrc(vrc, tr("RTVfsFileQuerySize failed (%Rrc)"), vrc);
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| 110 | return hrc;
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| 111 | }
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| 112 |
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| 113 | HRESULT BaseTextScript::save(const Utf8Str &rStrFilename, bool fOverwrite)
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| 114 | {
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| 115 | /*
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| 116 | * We may have to append the default filename to the
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| 117 | */
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| 118 | const char *pszFilename = rStrFilename.c_str();
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| 119 | Utf8Str strWithDefaultFilename;
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| 120 | if ( getDefaultFilename() != NULL
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| 121 | && *getDefaultFilename() != '\0'
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| 122 | && RTDirExists(rStrFilename.c_str()) )
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| 123 | {
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| 124 | try
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| 125 | {
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| 126 | strWithDefaultFilename = rStrFilename;
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| 127 | strWithDefaultFilename.append(RTPATH_SLASH);
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| 128 | strWithDefaultFilename.append(getDefaultFilename());
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| 129 | }
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| 130 | catch (std::bad_alloc &)
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| 131 | {
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| 132 | return E_OUTOFMEMORY;
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| 133 | }
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| 134 | pszFilename = strWithDefaultFilename.c_str();
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| 135 | }
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| 136 |
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| 137 | /*
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| 138 | * Save the filename for later use.
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| 139 | */
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| 140 | try
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| 141 | {
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| 142 | mStrSavedPath = pszFilename;
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| 143 | }
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| 144 | catch (std::bad_alloc &)
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| 145 | {
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| 146 | return E_OUTOFMEMORY;
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| 147 | }
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| 148 |
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| 149 | /*
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| 150 | * Use the saveToString method to produce the content.
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| 151 | */
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| 152 | Utf8Str strDst;
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| 153 | HRESULT hrc = saveToString(strDst);
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| 154 | if (SUCCEEDED(hrc))
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| 155 | {
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| 156 | /*
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| 157 | * Write the content.
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| 158 | */
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| 159 | RTFILE hFile;
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| 160 | uint64_t fOpen = RTFILE_O_WRITE | RTFILE_O_DENY_ALL;
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| 161 | if (fOverwrite)
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| 162 | fOpen |= RTFILE_O_CREATE_REPLACE;
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| 163 | else
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| 164 | fOpen |= RTFILE_O_CREATE;
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| 165 | int vrc = RTFileOpen(&hFile, pszFilename, fOpen);
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| 166 | if (RT_SUCCESS(vrc))
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| 167 | {
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| 168 | vrc = RTFileWrite(hFile, strDst.c_str(), strDst.length(), NULL);
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| 169 | if (RT_SUCCESS(vrc))
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| 170 | {
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| 171 | vrc = RTFileClose(hFile);
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| 172 | if (RT_SUCCESS(vrc))
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| 173 | {
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| 174 | LogRelFlow(("GeneralTextScript::save(): saved %zu bytes to '%s'\n", strDst.length(), pszFilename));
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| 175 | return S_OK;
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| 176 | }
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| 177 | }
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| 178 | RTFileClose(hFile);
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| 179 | RTFileDelete(pszFilename);
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| 180 | hrc = mpSetError->setErrorVrc(vrc, tr("Error writing to '%s' (%Rrc)"), pszFilename, vrc);
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| 181 | }
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| 182 | else
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| 183 | hrc = mpSetError->setErrorVrc(vrc, tr("Error creating/replacing '%s' (%Rrc)"), pszFilename, vrc);
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| 184 | }
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| 185 | return hrc;
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| 186 | }
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| 187 |
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| 188 |
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| 189 |
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| 190 | /*********************************************************************************************************************************
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| 191 | * GeneralTextScript Implementation *
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| 192 | *********************************************************************************************************************************/
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| 193 |
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| 194 | HRESULT GeneralTextScript::parse()
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| 195 | {
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| 196 | // AssertReturn(!mfDataParsed, mpSetError->setErrorBoth(E_FAIL, VERR_WRONG_ORDER, "parse called more than once"));
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| 197 |
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| 198 | /*
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| 199 | * Split the raw context into an array of lines.
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| 200 | */
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| 201 | try
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| 202 | {
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| 203 | mScriptContentByLines = mStrScriptFullContent.split("\n");
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| 204 | }
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| 205 | catch (std::bad_alloc &)
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| 206 | {
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| 207 | mScriptContentByLines.clear();
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| 208 | return E_OUTOFMEMORY;
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| 209 | }
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| 210 |
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| 211 | mfDataParsed = true;
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| 212 | return S_OK;
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| 213 | }
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| 214 |
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| 215 | HRESULT GeneralTextScript::saveToString(Utf8Str &rStrDst)
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| 216 | {
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| 217 | AssertReturn(mfDataParsed, mpSetError->setErrorBoth(E_FAIL, VERR_WRONG_ORDER, "saveToString() called before parse()"));
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| 218 |
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| 219 | /*
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| 220 | * Calc the required size first.
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| 221 | */
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| 222 | size_t const cLines = mScriptContentByLines.size();
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| 223 | size_t cbTotal = 1;
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| 224 | for (size_t iLine = 0; iLine < cLines; iLine++)
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| 225 | cbTotal = mScriptContentByLines[iLine].length() + 1;
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| 226 |
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| 227 | /*
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| 228 | * Clear the output and try reserve sufficient space.
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| 229 | */
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| 230 | rStrDst.setNull();
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| 231 |
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| 232 | int vrc = rStrDst.reserveNoThrow(cbTotal);
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| 233 | if (RT_FAILURE(vrc))
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| 234 | return E_OUTOFMEMORY;
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| 235 |
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| 236 | /*
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| 237 | * Assemble the output.
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| 238 | */
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| 239 | for (size_t iLine = 0; iLine < cLines; iLine++)
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| 240 | {
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| 241 | try
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| 242 | {
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| 243 | rStrDst.append(mScriptContentByLines[iLine]);
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| 244 | rStrDst.append('\n');
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| 245 | }
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| 246 | catch (std::bad_alloc &)
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| 247 | {
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| 248 | return E_OUTOFMEMORY;
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| 249 | }
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| 250 | }
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| 251 |
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| 252 | return S_OK;
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| 253 | }
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| 254 |
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| 255 | const RTCString &GeneralTextScript::getContentOfLine(size_t idxLine)
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| 256 | {
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| 257 | if (idxLine < mScriptContentByLines.size())
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| 258 | return mScriptContentByLines[idxLine];
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| 259 | return Utf8Str::Empty;
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| 260 | }
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| 261 |
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| 262 |
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| 263 | HRESULT GeneralTextScript::setContentOfLine(size_t idxLine, const Utf8Str &rStrNewLine)
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| 264 | {
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| 265 | AssertReturn(idxLine < mScriptContentByLines.size(),
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| 266 | mpSetError->setErrorBoth(E_FAIL, VERR_OUT_OF_RANGE, "attempting to set line %zu when there are only %zu lines",
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| 267 | idxLine, mScriptContentByLines.size()));
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| 268 | try
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| 269 | {
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| 270 | mScriptContentByLines[idxLine] = rStrNewLine;
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| 271 | }
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| 272 | catch (std::bad_alloc &)
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| 273 | {
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| 274 | return E_OUTOFMEMORY;
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| 275 | }
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| 276 | return S_OK;
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| 277 | }
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| 278 |
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| 279 | vector<size_t> GeneralTextScript::findTemplate(const Utf8Str &rStrNeedle,
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| 280 | RTCString::CaseSensitivity enmCase /*= RTCString::CaseSensitive*/)
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| 281 | {
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| 282 | vector<size_t> vecHitLineNumbers;
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| 283 | size_t const cLines = mScriptContentByLines.size();
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| 284 | for (size_t iLine = 0; iLine < cLines; iLine++)
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| 285 | if (mScriptContentByLines[iLine].contains(rStrNeedle, enmCase))
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| 286 | vecHitLineNumbers.push_back(iLine);
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| 287 |
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| 288 | return vecHitLineNumbers;
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| 289 | }
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| 290 |
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| 291 | HRESULT GeneralTextScript::findAndReplace(size_t idxLine, const Utf8Str &rStrNeedle, const Utf8Str &rStrReplacement)
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| 292 | {
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| 293 | AssertReturn(idxLine < mScriptContentByLines.size(),
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| 294 | mpSetError->setErrorBoth(E_FAIL, VERR_OUT_OF_RANGE,
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| 295 | "attempting search&replace in line %zu when there are only %zu lines",
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| 296 | idxLine, mScriptContentByLines.size()));
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| 297 |
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| 298 | RTCString &rDstString = mScriptContentByLines[idxLine];
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| 299 | size_t const offNeedle = rDstString.find(&rStrNeedle);
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| 300 | if (offNeedle != RTCString::npos)
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| 301 | {
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| 302 | try
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| 303 | {
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| 304 | RTCString strBefore(rDstString, 0, offNeedle);
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| 305 | RTCString strAfter(rDstString, offNeedle + rStrNeedle.length());
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| 306 | rDstString = strBefore;
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| 307 | strBefore.setNull();
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| 308 | rDstString.append(rStrReplacement);
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| 309 | rDstString.append(strAfter);
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| 310 | }
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| 311 | catch (std::bad_alloc &)
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| 312 | {
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| 313 | return E_OUTOFMEMORY;
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| 314 | }
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| 315 | }
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| 316 | return S_OK;
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| 317 | }
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| 318 |
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| 319 | HRESULT GeneralTextScript::appendToLine(size_t idxLine, const Utf8Str &rStrToAppend)
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| 320 | {
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| 321 | AssertReturn(idxLine < mScriptContentByLines.size(),
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| 322 | mpSetError->setErrorBoth(E_FAIL, VERR_OUT_OF_RANGE, "appending to line %zu when there are only %zu lines",
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| 323 | idxLine, mScriptContentByLines.size()));
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| 324 |
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| 325 | try
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| 326 | {
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| 327 | mScriptContentByLines[idxLine].append(rStrToAppend);
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| 328 | }
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| 329 | catch (std::bad_alloc &)
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| 330 | {
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| 331 | return E_OUTOFMEMORY;
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| 332 | }
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| 333 | return S_OK;
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| 334 | }
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| 335 |
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| 336 | HRESULT GeneralTextScript::prependToLine(size_t idxLine, const Utf8Str &rStrToPrepend)
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| 337 | {
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| 338 | AssertReturn(idxLine < mScriptContentByLines.size(),
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| 339 | mpSetError->setErrorBoth(E_FAIL, VERR_OUT_OF_RANGE, "prepending to line %zu when there are only %zu lines",
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| 340 | idxLine, mScriptContentByLines.size()));
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| 341 |
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| 342 | RTCString &rDstString = mScriptContentByLines[idxLine];
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| 343 | try
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| 344 | {
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| 345 | RTCString strCopy;
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| 346 | rDstString.swap(strCopy);
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| 347 | rDstString.reserve(strCopy.length() + rStrToPrepend.length() + 1);
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| 348 | rDstString = rStrToPrepend;
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| 349 | rDstString.append(strCopy);
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| 350 | }
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| 351 | catch (std::bad_alloc &)
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| 352 | {
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| 353 | return E_OUTOFMEMORY;
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| 354 | }
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| 355 | return S_OK;
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| 356 | }
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| 357 |
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