Mercurial > cgi-bin > hgweb.cgi > PassMan

annotate src/main/kotlin/name/blackcap/passman/UpdateSubcommand.kt @ 7:f245b9a53495

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Efficiency improvements.
author David Barts <n5jrn@me.com>
date Tue, 20 Sep 2022 21:54:32 -0700
parents 711cc42e96d7
children 698c4a3d758d
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1 package name.blackcap.passman
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2
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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 import kotlin.system.exitProcess
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8
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9 class UpdateSubcommand(): Subcommand() {
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10 private lateinit var commandLine: CommandLine
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11 private lateinit var db: Database
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12 private lateinit var nameIn: String
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13 private var id by Delegates.notNull<Long>()
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14 private var length by Delegates.notNull<Int>()
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15 private var generate by Delegates.notNull<Boolean>()
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16 private var allowSymbols by Delegates.notNull<Boolean>()
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17 private var verbose by Delegates.notNull<Boolean>()
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18 private val fields = StringBuilder()
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19 private val fieldValues = mutableListOf<Any?>()
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20
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21 private companion object {
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22 const val NULL_SPECIFIED = "."
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23 val NULLABLE_FIELDS = setOf<String>("notes")
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24 val SENSITIVE_FIELDS = setOf<String>("password")
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25 }
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26
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27 override fun run(args: Array<String>) {
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28 parseArguments(args)
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29 checkDatabase()
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30 update()
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31 }
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32
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33 private fun parseArguments(args: Array<String>) {
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34 val options = Options().apply {
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35 addOption("g", "generate", false, "Use password generator.")
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36 addOption("h", "help", false, "Print this help message.")
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37 addOption("l", "length", true, "Length of generated password.")
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38 addOption("s", "symbols", false, "Use symbol characters in generated password.")
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39 addOption("v", "verbose", false, "Print the generated password.")
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40 }
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41 try {
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42 commandLine = DefaultParser().parse(options, args)
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43 } catch (e: ParseException) {
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44 die(e.message ?: "syntax error", 2)
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45 }
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46 if (commandLine.hasOption("help")) {
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47 HelpFormatter().printHelp("$SHORTNAME update", options)
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48 exitProcess(0)
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49 }
0
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50 checkArguments()
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51 db = Database.open()
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52 nameIn = commandLine.args[0]
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53 id = db.makeKey(nameIn)
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54 length = commandLine.getOptionValue("length").let { rawLength ->
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55 try {
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56 rawLength?.toInt() ?: DEFAULT_GENERATED_LENGTH
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57 } catch (e: NumberFormatException) {
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58 die("${see(rawLength)} - invalid length")
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59 -1 /* will never happen */
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60 }
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61 }
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62 generate = commandLine.hasOption("generate")
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63 allowSymbols = commandLine.hasOption("symbols")
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64 verbose = commandLine.hasOption("verbose")
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65 }
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66
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67 private fun checkArguments(): Unit {
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68 var bad = false
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69 if (!commandLine.hasOption("generate")) {
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70 for (option in listOf<String>("length", "symbols", "verbose")) {
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71 if (commandLine.hasOption(option)) {
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72 error("--$option requires --generate")
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73 bad = true
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74 }
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75 }
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76 }
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77 if (commandLine.args.isEmpty()) {
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78 error("expecting site name")
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79 }
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80 if (commandLine.args.size > 1) {
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81 error("unexpected trailing arguments")
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82 }
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83 if (bad) {
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84 exitProcess(2);
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85 }
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86 }
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87
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88 private fun checkDatabase(): Unit {
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89 db.connection.prepareStatement("select count(*) from passwords where id = ?").use {
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90 it.setLong(1, id)
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91 val result = it.executeQuery()
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92 result.next()
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93 val count = result.getInt(1)
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94 if (count < 1) {
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95 die("no record matches " + see(nameIn))
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96 }
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97 }
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98 }
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99
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100 private fun update(): Unit {
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101 updateOne("username")
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102 if (generate) {
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103 generatePassword()
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104 } else {
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105 updateOne("password")
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106 }
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107 updateOne("notes")
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108 if (fieldValues.isEmpty()) {
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109 error("no values changed")
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110 return
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111 }
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112
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113 db.connection.prepareStatement("update passwords set modified = ?, $fields where id = ?").use { stmt ->
0
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114 stmt.setLong(1, System.currentTimeMillis())
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115 fieldValues.indices.forEach { fieldIndex ->
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116 val fieldValue = fieldValues[fieldIndex]
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117 val columnIndex = fieldIndex + 2
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118 when (fieldValue) {
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119 is String -> stmt.setEncryptedString(columnIndex, fieldValue, db.encryption)
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120 is CharArray -> stmt.setEncrypted(columnIndex, fieldValue, db.encryption)
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121 null -> stmt.setNull(columnIndex, Types.BLOB)
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122 else -> throw RuntimeException("this shouldn't happen")
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123 }
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124 }
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125 stmt.setLong(fieldValues.size + 2, id)
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126 stmt.execute()
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127 }
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128 }
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129
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130 private fun updateOne(name: String): Unit {
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131 val prompt = name.replaceFirstChar { it.titlecase(Locale.getDefault()) } + ": "
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132 val value: Any? = if (name in SENSITIVE_FIELDS) {
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133 getPassword(prompt, verify = true)
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134 } else {
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135 val rawValue = readLine(prompt)
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136 if (name in NULLABLE_FIELDS && rawValue == NULL_SPECIFIED) {
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137 null
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138 } else {
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139 rawValue
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140 }
0
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141 }
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142
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143 val noChange = when (value) {
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144 is String -> value.isEmpty()
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145 is CharArray -> value.isEmpty()
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146 else -> false
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147 }
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148 if (noChange) {
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149 return
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150 }
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151
2
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152 addOne(name, value)
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153 }
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154
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155 private fun addOne(name: String, value: Any?) {
0
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156 if (fields.isNotEmpty()) {
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157 fields.append(", ")
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158 }
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159 fields.append(name)
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160 fields.append(" = ?")
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161 fieldValues.add(value)
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162 }
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163
2
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164 private fun generatePassword(): Unit {
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165 val newPassword = generate(length, allowSymbols)
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166 if (verbose) {
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167 printPassword(newPassword)
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168 }
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169 addOne("password", newPassword)
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170 }
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171
3
eafa3779aef8 More bug fixes, quote strings in diagnostics.
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172 }