Mercurial > cgi-bin > hgweb.cgi > PassMan

annotate src/main/kotlin/name/blackcap/passman/UpdateSubcommand.kt @ 22:07406c4af4a5

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More interactive mode stuff.
author David Barts <n5jrn@me.com>
date Tue, 02 Jul 2024 17:34:52 -0700
parents ea65ab890f66
children
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1 package name.blackcap.passman
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3 import org.apache.commons.cli.*
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4 import java.sql.Types
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5 import java.util.*
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6 import kotlin.properties.Delegates
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7
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8 class UpdateSubcommand(): Subcommand() {
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9 private lateinit var commandLine: CommandLine
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10 private lateinit var db: Database
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11 private lateinit var nameIn: String
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12 private var id by Delegates.notNull<Long>()
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13 private var length by Delegates.notNull<Int>()
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14 private val fields = StringBuilder()
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15 private val fieldValues = mutableListOf<Any?>()
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16
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17 private companion object {
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18 const val GENERATE = "generate"
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19 const val HELP = "help"
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20 const val LENGTH = "length"
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21 const val SYMBOLS = "symbols"
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22 const val VERBOSE = "verbose"
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23 const val NULL_SPECIFIED = "."
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24 val NULLABLE_FIELDS = setOf<String>("notes")
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25 val SENSITIVE_FIELDS = setOf<String>("password")
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26 }
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27
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28 override fun run(args: Array<String>) {
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29 parseArguments(args)
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30 if (commandLine.hasOption(HELP)) {
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31 return
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32 }
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33 checkDatabase()
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34 try {
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35 update()
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36 } finally {
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37 cleanUp()
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38 }
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39 }
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40
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41 private fun parseArguments(args: Array<String>) {
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42 val options = Options().apply {
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43 addOption("g", GENERATE, false, "Use password generator.")
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44 addOption("h", HELP, false, "Print this help message.")
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45 addOption("l", LENGTH, true, "Length of generated password (default $DEFAULT_GENERATED_LENGTH).")
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46 addOption("s", SYMBOLS, false, "Use symbol characters in generated password.")
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47 addOption("v", VERBOSE, false, "Print the generated password.")
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48 }
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49 try {
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50 commandLine = DefaultParser().parse(options, args)
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51 } catch (e: ParseException) {
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52 throw SubcommandException(message = e.message ?: "syntax error", status = 2, cause = e)
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53 }
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54 if (commandLine.hasOption(HELP)) {
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55 HelpFormatter().printHelp("$SHORTNAME update [options] name", options)
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56 return
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57 }
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58 checkArguments()
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59 db = Database.default
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60 nameIn = commandLine.args[0]
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61 id = db.makeKey(nameIn)
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62 val rawLength = commandLine.getOptionValue(LENGTH)
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63 length = try {
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64 rawLength?.toInt() ?: DEFAULT_GENERATED_LENGTH
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65 } catch (e: NumberFormatException) {
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66 -1
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67 }
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68 if (length < MIN_GENERATED_LENGTH) {
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69 throw SubcommandException(message = "${see(rawLength)} - invalid length")
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70 }
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71 }
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72
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73 private fun checkArguments(): Unit {
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74 var bad = false
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75 if (!commandLine.hasOption(GENERATE)) {
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76 for (option in listOf<String>(LENGTH, SYMBOLS, VERBOSE)) {
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77 if (commandLine.hasOption(option)) {
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78 error("--$option requires --$GENERATE")
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79 bad = true
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80 }
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81 }
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82 }
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83 if (bad) {
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84 throw SubcommandException(status = 2)
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85 }
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86 if (commandLine.args.isEmpty()) {
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87 throw SubcommandException(message = "expecting site name", status = 2)
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88 }
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89 if (commandLine.args.size > 1) {
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90 throw SubcommandException(message = "unexpected trailing arguments", status = 2)
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91 }
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92 }
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93
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94 private fun checkDatabase(): Unit {
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95 db.connection.prepareStatement("select count(*) from passwords where id = ?").use {
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96 it.setLong(1, id)
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97 val result = it.executeQuery()
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98 result.next()
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99 val count = result.getInt(1)
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100 if (count < 1) {
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101 throw SubcommandException(message = "no record matches " + see(nameIn))
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102 }
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103 }
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104 }
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105
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106 private fun update(): Unit {
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107 updateOne("username")
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108 if (commandLine.hasOption(GENERATE)) {
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109 generatePassword()
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110 } else {
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111 updateOne("password")
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112 }
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113 updateOne("notes")
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114 if (fieldValues.isEmpty()) {
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115 error("no values changed")
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116 return
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117 }
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118
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119 db.connection.prepareStatement("update passwords set modified = ?, $fields where id = ?").use { stmt ->
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120 stmt.setLong(1, System.currentTimeMillis())
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121 fieldValues.indices.forEach { fieldIndex ->
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122 val fieldValue = fieldValues[fieldIndex]
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123 val columnIndex = fieldIndex + 2
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124 when (fieldValue) {
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125 is String -> stmt.setEncryptedString(columnIndex, fieldValue, db.encryption)
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126 is CharArray -> stmt.setEncrypted(columnIndex, fieldValue, db.encryption)
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127 null -> stmt.setNull(columnIndex, Types.BLOB)
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128 else -> throw RuntimeException("this shouldn't happen")
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129 }
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130 }
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131 stmt.setLong(fieldValues.size + 2, id)
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132 stmt.execute()
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133 }
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134 }
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135
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136 private fun cleanUp(): Unit {
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137 fieldValues.forEach {
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138 if (it is CharArray) {
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139 it.clear()
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140 }
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141 }
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142 }
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143
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144 private fun updateOne(name: String): Unit {
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145 val prompt = name.replaceFirstChar { it.uppercase(Locale.getDefault()) } + ": "
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146 val value: Any? = if (name in SENSITIVE_FIELDS) {
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147 try {
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148 getPassword(prompt)
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149 } catch (e: ConsoleException) {
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150 throw SubcommandException(message = e.message, cause = e)
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151 }
0
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152 } else {
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153 val rawValue = readLine(prompt)
2
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154 if (name in NULLABLE_FIELDS && rawValue == NULL_SPECIFIED) {
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155 null
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156 } else {
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157 rawValue
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158 }
0
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159 }
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160
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161 val noChange = when (value) {
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162 is String -> value.isEmpty()
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163 is CharArray -> value.isEmpty()
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164 else -> false
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165 }
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166 if (noChange) {
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167 return
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168 }
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169
2
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170 addOne(name, value)
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171 }
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172
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173 private fun addOne(name: String, value: Any?) {
0
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174 if (fields.isNotEmpty()) {
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175 fields.append(", ")
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176 }
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177 fields.append(name)
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178 fields.append(" = ?")
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179 fieldValues.add(value)
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180 }
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181
2
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182 private fun generatePassword(): Unit {
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183 val newPassword = generate(length, commandLine.hasOption(SYMBOLS))
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184 if (commandLine.hasOption(VERBOSE)) {
2
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185 printPassword(newPassword)
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186 }
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187 addOne("password", newPassword)
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188 }
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189
3
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190 }