├── .config
    └── checkstyle
    │   ├── checkstyle.xml
    │   └── suppressions.xml
├── .gitattributes
├── .github
    └── workflows
    │   ├── build.yml
    │   └── release.yml
├── .gitignore
├── HEADER.txt
├── LICENSE
├── README.md
├── VERSION
├── build.gradle
├── gradle.properties
├── gradle
    └── wrapper
    │   ├── gradle-wrapper.jar
    │   └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── settings.gradle
└── src
    └── main
        └── java
            └── net
                └── elytrium
                    └── velocitytools
                        ├── Settings.java
                        ├── VelocityTools.java
                        ├── commands
                            ├── AlertCommand.java
                            ├── FindCommand.java
                            ├── HubCommand.java
                            ├── RatelimitedCommand.java
                            ├── SendCommand.java
                            └── VelocityToolsCommand.java
                        ├── handlers
                            └── HostnamesManagerHandler.java
                        ├── hooks
                            ├── ChannelInitializerHook.java
                            ├── HandshakeHook.java
                            ├── HooksInitializer.java
                            ├── PacketHook.java
                            └── PluginMessageHook.java
                        ├── listeners
                            ├── BrandChangerPingListener.java
                            ├── ProtocolBlockerJoinListener.java
                            └── ProtocolBlockerPingListener.java
                        └── utils
                            ├── ProtocolUtil.java
                            └── WhitelistUtil.java


/.config/checkstyle/checkstyle.xml:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0"?>
  2 | <!DOCTYPE module PUBLIC
  3 |           "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
  4 |           "https://checkstyle.org/dtds/configuration_1_3.dtd">
  5 | 
  6 | <!--
  7 |     Checkstyle configuration that checks the Google coding conventions from Google Java Style
  8 |     that can be found at https://google.github.io/styleguide/javaguide.html
  9 | 
 10 |     Checkstyle is very configurable. Be sure to read the documentation at
 11 |     http://checkstyle.org (or in your downloaded distribution).
 12 | 
 13 |     To completely disable a check, just comment it out or delete it from the file.
 14 |     To suppress certain violations please review suppression filters.
 15 | 
 16 |     Authors: Max Vetrenko, Ruslan Diachenko, Roman Ivanov.
 17 |  -->
 18 | 
 19 | <module name="Checker">
 20 |   <module name="SuppressWarningsFilter"/>
 21 | 
 22 |   <property name="charset" value="UTF-8"/>
 23 | 
 24 |   <property name="severity" value="warning"/>
 25 | 
 26 |   <property name="fileExtensions" value="java, properties, xml"/>
 27 |   <!-- Excludes all 'module-info.java' files              -->
 28 |   <!-- See https://checkstyle.org/filefilters/index.html -->
 29 |   <module name="BeforeExecutionExclusionFileFilter">
 30 |     <property name="fileNamePattern" value="module\-info\.java$"/>
 31 |   </module>
 32 |   <!-- https://checkstyle.org/filters/suppressionfilter.html -->
 33 |   <module name="SuppressionFilter">
 34 |     <property name="file" value="${configDirectory}/suppressions.xml"/>
 35 |   </module>
 36 | 
 37 |   <!-- Checks for whitespace                               -->
 38 |   <!-- See http://checkstyle.org/checks/whitespace/index.html -->
 39 |   <module name="FileTabCharacter">
 40 |     <property name="eachLine" value="true"/>
 41 |   </module>
 42 | 
 43 |   <module name="LineLength">
 44 |     <property name="fileExtensions" value="java"/>
 45 |     <property name="max" value="155"/>
 46 |     <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
 47 |   </module>
 48 | 
 49 |   <module name="NewlineAtEndOfFile"/>
 50 | 
 51 |   <module name="TreeWalker">
 52 |     <module name="MissingOverride"/>
 53 |     <module name="RedundantImport"/>
 54 |     <module name="UnusedImports"/>
 55 |     <module name="RequireThis">
 56 |       <property name="validateOnlyOverlapping" value="false"/>
 57 |     </module>
 58 | 
 59 |     <module name="OuterTypeFilename"/>
 60 |     <module name="IllegalTokenText">
 61 |       <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
 62 |       <property name="format"
 63 |                 value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
 64 |       <property name="message"
 65 |                 value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
 66 |     </module>
 67 |     <module name="AvoidEscapedUnicodeCharacters">
 68 |       <property name="allowEscapesForControlCharacters" value="true"/>
 69 |       <property name="allowByTailComment" value="true"/>
 70 |       <property name="allowNonPrintableEscapes" value="true"/>
 71 |     </module>
 72 |     <module name="AvoidStarImport"/>
 73 |     <module name="OneTopLevelClass"/>
 74 |     <module name="NoLineWrap">
 75 |       <property name="tokens" value="PACKAGE_DEF, IMPORT, STATIC_IMPORT"/>
 76 |     </module>
 77 |     <module name="EmptyBlock">
 78 |       <property name="option" value="TEXT"/>
 79 |       <property name="tokens"
 80 |                 value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
 81 |     </module>
 82 |     <module name="NeedBraces">
 83 |       <property name="tokens"
 84 |                 value="LITERAL_DO, LITERAL_ELSE, LITERAL_FOR, LITERAL_IF, LITERAL_WHILE"/>
 85 |     </module>
 86 |     <module name="LeftCurly">
 87 |       <property name="tokens"
 88 |                 value="ANNOTATION_DEF, CLASS_DEF, CTOR_DEF, ENUM_CONSTANT_DEF, ENUM_DEF,
 89 |                     INTERFACE_DEF, LAMBDA, LITERAL_CASE, LITERAL_CATCH, LITERAL_DEFAULT,
 90 |                     LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF,
 91 |                     LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, METHOD_DEF,
 92 |                     OBJBLOCK, STATIC_INIT, RECORD_DEF, COMPACT_CTOR_DEF"/>
 93 |     </module>
 94 |     <module name="RightCurly">
 95 |       <property name="id" value="RightCurlySame"/>
 96 |       <property name="tokens"
 97 |                 value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE,
 98 |                     LITERAL_DO"/>
 99 |     </module>
100 |     <module name="RightCurly">
101 |       <property name="id" value="RightCurlyAlone"/>
102 |       <property name="option" value="alone"/>
103 |       <property name="tokens"
104 |                 value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT,
105 |                     INSTANCE_INIT, ANNOTATION_DEF, ENUM_DEF, INTERFACE_DEF, RECORD_DEF,
106 |                     COMPACT_CTOR_DEF, LITERAL_SWITCH"/>
107 |     </module>
108 |     <module name="SuppressionXpathSingleFilter">
109 |       <!-- suppresion is required till https://github.com/checkstyle/checkstyle/issues/7541 -->
110 |       <property name="id" value="RightCurlyAlone"/>
111 |       <property name="query" value="//RCURLY[parent::SLIST[count(./*)=1]
112 |                                      or preceding-sibling::*[last()][self::LCURLY]]"/>
113 |     </module>
114 |     <module name="WhitespaceAfter">
115 |       <property name="tokens"
116 |                 value="COMMA, SEMI, TYPECAST, LITERAL_IF, LITERAL_ELSE, LITERAL_RETURN,
117 |                     LITERAL_WHILE, LITERAL_DO, LITERAL_FOR, LITERAL_FINALLY, DO_WHILE, ELLIPSIS,
118 |                     LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_CATCH, LAMBDA,
119 |                     LITERAL_YIELD, LITERAL_CASE"/>
120 |     </module>
121 |     <module name="WhitespaceAround">
122 |       <property name="allowEmptyConstructors" value="true"/>
123 |       <property name="allowEmptyLambdas" value="true"/>
124 |       <property name="allowEmptyMethods" value="true"/>
125 |       <property name="allowEmptyTypes" value="true"/>
126 |       <property name="allowEmptyLoops" value="true"/>
127 |       <property name="ignoreEnhancedForColon" value="false"/>
128 |       <property name="tokens"
129 |                 value="ASSIGN, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR,
130 |                     BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN, DO_WHILE, EQUAL, GE, GT, LAMBDA, LAND,
131 |                     LCURLY, LE, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY,
132 |                     LITERAL_FOR, LITERAL_IF, LITERAL_RETURN, LITERAL_SWITCH, LITERAL_SYNCHRONIZED,
133 |                     LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS, MINUS_ASSIGN, MOD, MOD_ASSIGN,
134 |                     NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, RCURLY, SL, SLIST, SL_ASSIGN, SR,
135 |                     SR_ASSIGN, STAR, STAR_ASSIGN, LITERAL_ASSERT, TYPE_EXTENSION_AND"/>
136 |       <message key="ws.notFollowed"
137 |                value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
138 |       <message key="ws.notPreceded"
139 |                value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
140 |     </module>
141 |     <module name="OneStatementPerLine"/>
142 |     <module name="MultipleVariableDeclarations"/>
143 |     <module name="ArrayTypeStyle"/>
144 |     <module name="MissingSwitchDefault"/>
145 |     <module name="FallThrough"/>
146 |     <module name="UpperEll"/>
147 |     <module name="ModifierOrder"/>
148 |     <module name="EmptyLineSeparator">
149 |       <property name="tokens"
150 |                 value="PACKAGE_DEF, IMPORT, STATIC_IMPORT, CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
151 |                     STATIC_INIT, INSTANCE_INIT, METHOD_DEF, CTOR_DEF, VARIABLE_DEF, RECORD_DEF,
152 |                     COMPACT_CTOR_DEF"/>
153 |       <property name="allowNoEmptyLineBetweenFields" value="true"/>
154 |     </module>
155 |     <module name="SeparatorWrap">
156 |       <property name="id" value="SeparatorWrapDot"/>
157 |       <property name="tokens" value="DOT"/>
158 |       <property name="option" value="nl"/>
159 |     </module>
160 |     <module name="SeparatorWrap">
161 |       <property name="id" value="SeparatorWrapComma"/>
162 |       <property name="tokens" value="COMMA"/>
163 |       <property name="option" value="EOL"/>
164 |     </module>
165 |     <module name="SeparatorWrap">
166 |       <!-- ELLIPSIS is EOL until https://github.com/google/styleguide/issues/259 -->
167 |       <property name="id" value="SeparatorWrapEllipsis"/>
168 |       <property name="tokens" value="ELLIPSIS"/>
169 |       <property name="option" value="EOL"/>
170 |     </module>
171 |     <module name="SeparatorWrap">
172 |       <!-- ARRAY_DECLARATOR is EOL until https://github.com/google/styleguide/issues/258 -->
173 |       <property name="id" value="SeparatorWrapArrayDeclarator"/>
174 |       <property name="tokens" value="ARRAY_DECLARATOR"/>
175 |       <property name="option" value="EOL"/>
176 |     </module>
177 |     <module name="SeparatorWrap">
178 |       <property name="id" value="SeparatorWrapMethodRef"/>
179 |       <property name="tokens" value="METHOD_REF"/>
180 |       <property name="option" value="nl"/>
181 |     </module>
182 |     <module name="PackageName">
183 |       <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
184 |       <message key="name.invalidPattern"
185 |                value="Package name ''{0}'' must match pattern ''{1}''."/>
186 |     </module>
187 |     <module name="TypeName">
188 |       <property name="tokens" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
189 |                     ANNOTATION_DEF, RECORD_DEF"/>
190 |       <message key="name.invalidPattern"
191 |                value="Type name ''{0}'' must match pattern ''{1}''."/>
192 |     </module>
193 |     <module name="MemberName">
194 |       <property name="format" value="^[a-z][a-z0-9]{0,1}[a-zA-Z0-9]*$"/>
195 |       <message key="name.invalidPattern"
196 |                value="Member name ''{0}'' must match pattern ''{1}''."/>
197 |     </module>
198 |     <module name="ParameterName">
199 |       <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
200 |       <message key="name.invalidPattern"
201 |                value="Parameter name ''{0}'' must match pattern ''{1}''."/>
202 |     </module>
203 |     <module name="LambdaParameterName">
204 |       <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
205 |       <message key="name.invalidPattern"
206 |                value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
207 |     </module>
208 |     <module name="CatchParameterName">
209 |       <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
210 |       <message key="name.invalidPattern"
211 |                value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
212 |     </module>
213 |     <module name="LocalVariableName">
214 |       <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
215 |       <message key="name.invalidPattern"
216 |                value="Local variable name ''{0}'' must match pattern ''{1}''."/>
217 |     </module>
218 |     <module name="PatternVariableName">
219 |       <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
220 |       <message key="name.invalidPattern"
221 |                value="Pattern variable name ''{0}'' must match pattern ''{1}''."/>
222 |     </module>
223 |     <module name="ClassTypeParameterName">
224 |       <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
225 |       <message key="name.invalidPattern"
226 |                value="Class type name ''{0}'' must match pattern ''{1}''."/>
227 |     </module>
228 |     <module name="RecordComponentName">
229 |       <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
230 |       <message key="name.invalidPattern"
231 |                value="Record component name ''{0}'' must match pattern ''{1}''."/>
232 |     </module>
233 |     <module name="RecordTypeParameterName">
234 |       <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
235 |       <message key="name.invalidPattern"
236 |                value="Record type name ''{0}'' must match pattern ''{1}''."/>
237 |     </module>
238 |     <module name="MethodTypeParameterName">
239 |       <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
240 |       <message key="name.invalidPattern"
241 |                value="Method type name ''{0}'' must match pattern ''{1}''."/>
242 |     </module>
243 |     <module name="InterfaceTypeParameterName">
244 |       <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
245 |       <message key="name.invalidPattern"
246 |                value="Interface type name ''{0}'' must match pattern ''{1}''."/>
247 |     </module>
248 |     <module name="NoFinalizer"/>
249 |     <module name="GenericWhitespace">
250 |       <message key="ws.followed"
251 |                value="GenericWhitespace ''{0}'' is followed by whitespace."/>
252 |       <message key="ws.preceded"
253 |                value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
254 |       <message key="ws.illegalFollow"
255 |                value="GenericWhitespace ''{0}'' should followed by whitespace."/>
256 |       <message key="ws.notPreceded"
257 |                value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
258 |     </module>
259 |     <module name="Indentation">
260 |       <property name="basicOffset" value="2"/>
261 |       <property name="braceAdjustment" value="2"/>
262 |       <property name="caseIndent" value="2"/>
263 |       <property name="throwsIndent" value="4"/>
264 |       <property name="lineWrappingIndentation" value="4"/>
265 |       <property name="arrayInitIndent" value="2"/>
266 |     </module>
267 |     <module name="AbbreviationAsWordInName">
268 |       <property name="ignoreFinal" value="false"/>
269 |       <property name="allowedAbbreviationLength" value="2"/>
270 |       <property name="tokens"
271 |                 value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, ANNOTATION_DEF, ANNOTATION_FIELD_DEF,
272 |                     PARAMETER_DEF, VARIABLE_DEF, METHOD_DEF, PATTERN_VARIABLE_DEF, RECORD_DEF,
273 |                     RECORD_COMPONENT_DEF"/>
274 |     </module>
275 |     <module name="NoWhitespaceBeforeCaseDefaultColon"/>
276 |     <module name="OverloadMethodsDeclarationOrder"/>
277 |     <module name="VariableDeclarationUsageDistance"/>
278 |     <module name="CustomImportOrder">
279 |       <property name="sortImportsInGroupAlphabetically" value="true"/>
280 |       <property name="separateLineBetweenGroups" value="true"/>
281 |       <property name="customImportOrderRules" value="STATIC###THIRD_PARTY_PACKAGE"/>
282 |       <property name="tokens" value="IMPORT, STATIC_IMPORT, PACKAGE_DEF"/>
283 |     </module>
284 |     <module name="MethodParamPad">
285 |       <property name="tokens"
286 |                 value="CTOR_DEF, LITERAL_NEW, METHOD_CALL, METHOD_DEF,
287 |                     SUPER_CTOR_CALL, ENUM_CONSTANT_DEF, RECORD_DEF"/>
288 |     </module>
289 |     <module name="NoWhitespaceBefore">
290 |       <property name="tokens"
291 |                 value="COMMA, SEMI, POST_INC, POST_DEC, DOT,
292 |                     LABELED_STAT, METHOD_REF"/>
293 |       <property name="allowLineBreaks" value="true"/>
294 |     </module>
295 |     <module name="ParenPad">
296 |       <property name="tokens"
297 |                 value="ANNOTATION, ANNOTATION_FIELD_DEF, CTOR_CALL, CTOR_DEF, DOT, ENUM_CONSTANT_DEF,
298 |                     EXPR, LITERAL_CATCH, LITERAL_DO, LITERAL_FOR, LITERAL_IF, LITERAL_NEW,
299 |                     LITERAL_SWITCH, LITERAL_SYNCHRONIZED, LITERAL_WHILE, METHOD_CALL,
300 |                     METHOD_DEF, QUESTION, RESOURCE_SPECIFICATION, SUPER_CTOR_CALL, LAMBDA,
301 |                     RECORD_DEF"/>
302 |     </module>
303 |     <module name="OperatorWrap">
304 |       <property name="option" value="NL"/>
305 |       <property name="tokens"
306 |                 value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,
307 |                     LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF,
308 |                     TYPE_EXTENSION_AND "/>
309 |     </module>
310 |     <module name="AnnotationLocation">
311 |       <property name="id" value="AnnotationLocationMostCases"/>
312 |       <property name="tokens"
313 |                 value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF,
314 |                       RECORD_DEF, COMPACT_CTOR_DEF"/>
315 |     </module>
316 |     <module name="AnnotationLocation">
317 |       <property name="id" value="AnnotationLocationVariables"/>
318 |       <property name="tokens" value="VARIABLE_DEF"/>
319 |       <property name="allowSamelineMultipleAnnotations" value="true"/>
320 |     </module>
321 |     <module name="NonEmptyAtclauseDescription"/>
322 |     <module name="InvalidJavadocPosition"/>
323 |     <module name="JavadocTagContinuationIndentation"/>
324 |     <module name="SummaryJavadoc">
325 |       <property name="forbiddenSummaryFragments"
326 |                 value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>
327 |     </module>
328 |     <module name="JavadocParagraph"/>
329 |     <module name="RequireEmptyLineBeforeBlockTagGroup"/>
330 |     <module name="AtclauseOrder">
331 |       <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
332 |       <property name="target"
333 |                 value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
334 |     </module>
335 |     <module name="JavadocMethod">
336 |       <property name="accessModifiers" value="public"/>
337 |       <property name="allowMissingParamTags" value="true"/>
338 |       <property name="allowMissingReturnTag" value="true"/>
339 |       <property name="allowedAnnotations" value="Override, Test"/>
340 |       <property name="tokens" value="METHOD_DEF, CTOR_DEF, ANNOTATION_FIELD_DEF, COMPACT_CTOR_DEF"/>
341 |     </module>
342 |     <module name="MissingJavadocMethod">
343 |       <property name="scope" value="public"/>
344 |       <property name="minLineCount" value="2"/>
345 |       <property name="allowedAnnotations" value="Override, Test"/>
346 |       <property name="tokens" value="METHOD_DEF, CTOR_DEF, ANNOTATION_FIELD_DEF,
347 |                                    COMPACT_CTOR_DEF"/>
348 |     </module>
349 |     <module name="MissingJavadocType">
350 |       <property name="scope" value="protected"/>
351 |       <property name="tokens"
352 |                 value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
353 |                       RECORD_DEF, ANNOTATION_DEF"/>
354 |       <property name="excludeScope" value="nothing"/>
355 |     </module>
356 |     <module name="MethodName">
357 |       <property name="format" value="^[a-z][a-z0-9]\w*$"/>
358 |       <message key="name.invalidPattern"
359 |                value="Method name ''{0}'' must match pattern ''{1}''."/>
360 |     </module>
361 |     <module name="SingleLineJavadoc"/>
362 |     <module name="EmptyCatchBlock">
363 |       <property name="exceptionVariableName" value="expected"/>
364 |     </module>
365 |     <module name="CommentsIndentation">
366 |       <property name="tokens" value="SINGLE_LINE_COMMENT, BLOCK_COMMENT_BEGIN"/>
367 |     </module>
368 |     <!-- https://checkstyle.org/filters/suppressionxpathfilter.html -->
369 |     <module name="SuppressionXpathFilter">
370 |       <property name="file" value="${org.checkstyle.google.suppressionxpathfilter.config}"
371 |                 default="checkstyle-xpath-suppressions.xml" />
372 |       <property name="optional" value="true"/>
373 |     </module>
374 |     <module name="SuppressWarningsHolder" />
375 |     <module name="SuppressionCommentFilter">
376 |       <property name="offCommentFormat" value="CHECKSTYLE.OFF\: ([\w\|]+)" />
377 |       <property name="onCommentFormat" value="CHECKSTYLE.ON\: ([\w\|]+)" />
378 |       <property name="checkFormat" value="$1" />
379 |     </module>
380 |     <module name="SuppressWithNearbyCommentFilter">
381 |       <property name="commentFormat" value="CHECKSTYLE.SUPPRESS\: ([\w\|]+)"/>
382 |       <!-- $1 refers to the first match group in the regex defined in commentFormat -->
383 |       <property name="checkFormat" value="$1"/>
384 |       <!-- The check is suppressed in the next line of code after the comment -->
385 |       <property name="influenceFormat" value="1"/>
386 |     </module>
387 |   </module>
388 | </module>
389 | 


--------------------------------------------------------------------------------
/.config/checkstyle/suppressions.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE suppressions PUBLIC
 3 |         "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
 4 |         "http://checkstyle.org/dtds/suppressions_1_2.dtd">
 5 | 
 6 | <suppressions>
 7 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*" checks="SummaryJavadoc"/>
 8 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*" checks="MissingJavadocType"/>
 9 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*" checks="MissingJavadocMethod"/>
10 | 
11 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*[\\/]Settings.java" checks="TypeName"/>
12 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*[\\/]Settings.java" checks="LineLength"/>
13 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*[\\/]Settings.java" checks="MemberName"/>
14 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*[\\/]Settings.java" checks="AbbreviationAsWordInName"/>
15 | 
16 |     <suppress files=".*[\\/]net[\\/]elytrium[\\/].*[\\/]BuildConfig.java" checks=".*"/>
17 | </suppressions>
18 | 


--------------------------------------------------------------------------------
/.gitattributes:
--------------------------------------------------------------------------------
 1 | #
 2 | # https://help.github.com/articles/dealing-with-line-endings/
 3 | #
 4 | # Linux start script should use lf
 5 | /gradlew        text eol=lf
 6 | 
 7 | # These are Windows script files and should use crlf
 8 | *.bat           text eol=crlf
 9 | 
10 | 


--------------------------------------------------------------------------------
/.github/workflows/build.yml:
--------------------------------------------------------------------------------
 1 | name: Java CI with Gradle
 2 | 
 3 | on:
 4 |   push:
 5 |     branches:
 6 |       - master
 7 |   pull_request:
 8 |     branches:
 9 |       - master
10 | 
11 | jobs:
12 |   build:
13 |     runs-on: ubuntu-latest
14 |     steps:
15 |       - name: Checkout
16 |         uses: actions/checkout@v4.2.2
17 |       - name: Set up JDK
18 |         uses: actions/setup-java@v4.7.0
19 |         with:
20 |           distribution: adopt
21 |           java-version: 17
22 |       - name: Build VelocityTools
23 |         run: ./gradlew build
24 |       - name: Upload VelocityTools
25 |         uses: actions/upload-artifact@v4.6.2
26 |         with:
27 |           name: VelocityTools
28 |           path: "build/libs/*.jar"
29 |       - uses: dev-drprasad/delete-tag-and-release@v0.2.1
30 |         if: ${{ github.event_name == 'push' }}
31 |         with:
32 |           delete_release: true
33 |           tag_name: dev-build
34 |         env:
35 |           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
36 |       - name: Find git version
37 |         id: git-version
38 |         run: echo "id=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
39 |       - name: Find correct JAR
40 |         if: ${{ github.event_name == 'push' }}
41 |         id: find-jar
42 |         run: |
43 |           output="$(find build/libs/ ! -name "*-javadoc.jar" ! -name "*-sources.jar" -type f -printf "%f\n")"
44 |           echo "::set-output name=jarname::$output"
45 |       - name: Release the build
46 |         if: ${{ github.event_name == 'push' }}
47 |         uses: ncipollo/release-action@v1
48 |         with:
49 |           artifacts: build/libs/${{ steps.find-jar.outputs.jarname }}
50 |           body: ${{ join(github.event.commits.*.message, '\n') }}
51 |           prerelease: true
52 |           name: Dev-build ${{ steps.git-version.outputs.id }}
53 |           tag: dev-build
54 |       - name: Upload to Modrinth
55 |         if: ${{ github.event_name == 'push' }}
56 |         uses: RubixDev/modrinth-upload@v1.0.0
57 |         with:
58 |           token: ${{ secrets.MODRINTH_TOKEN }}
59 |           file_path: build/libs/${{ steps.find-jar.outputs.jarname }}
60 |           name: Dev-build ${{ steps.git-version.outputs.id }}
61 |           version: ${{ steps.git-version.outputs.id }}
62 |           changelog: ${{ join(github.event.commits.*.message, '\n') }}
63 |           game_versions: 1.7.2
64 |           release_type: beta
65 |           loaders: velocity
66 |           featured: false
67 |           project_id: 4mehh1CR
68 | 


--------------------------------------------------------------------------------
/.github/workflows/release.yml:
--------------------------------------------------------------------------------
 1 | name: Java CI with Gradle
 2 | 
 3 | on:
 4 |   release:
 5 |     types: [published]
 6 | 
 7 | jobs:
 8 |   build:
 9 |     runs-on: ubuntu-latest
10 |     steps:
11 |       - name: Checkout
12 |         uses: actions/checkout@v4.2.2
13 |       - name: Set up JDK
14 |         uses: actions/setup-java@v4.7.0
15 |         with:
16 |           distribution: adopt
17 |           java-version: 17
18 |       - name: Build VelocityTools
19 |         run: ./gradlew build
20 |       - name: Upload VelocityTools
21 |         uses: actions/upload-artifact@v4.6.2
22 |         with:
23 |           name: VelocityTools
24 |           path: "build/libs/*.jar"
25 |       - name: Find correct JAR
26 |         id: find-jar
27 |         run: |
28 |           output="$(find build/libs/ ! -name "*-javadoc.jar" ! -name "*-sources.jar" -type f -printf "%f\n")"
29 |           echo "::set-output name=jarname::$output"
30 |       - name: Upload to the GitHub release
31 |         uses: actions/upload-release-asset@v1
32 |         env:
33 |           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
34 |         with:
35 |           upload_url: ${{ github.event.release.upload_url }}
36 |           asset_path: build/libs/${{ steps.find-jar.outputs.jarname }}
37 |           asset_name: ${{ steps.find-jar.outputs.jarname }}
38 |           asset_content_type: application/java-archive
39 |       - name: Upload to Modrinth
40 |         uses: RubixDev/modrinth-upload@v1.0.0
41 |         with:
42 |           token: ${{ secrets.MODRINTH_TOKEN }}
43 |           file_path: build/libs/${{ steps.find-jar.outputs.jarname }}
44 |           name: Release ${{ github.event.release.tag_name }}
45 |           version: ${{ github.event.release.tag_name }}
46 |           changelog: ${{ github.event.release.body }}
47 |           game_versions: 1.7.2
48 |           release_type: release
49 |           loaders: velocity
50 |           featured: true
51 |           project_id: 4mehh1CR
52 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # IntelliJ user-specific stuff
 2 | .idea/
 3 | *.iml
 4 | 
 5 | # Compiled class file
 6 | *.class
 7 | 
 8 | # Log file
 9 | *.log
10 | 
11 | # Package Files
12 | *.jar
13 | *.zip
14 | *.tar.gz
15 | *.rar
16 | 
17 | # Virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
18 | hs_err_pid*
19 | 
20 | *~
21 | 
22 | # Temporary files which can be created if a process still has a handle open of a deleted file
23 | .fuse_hidden*
24 | 
25 | # KDE directory preferences
26 | .directory
27 | 
28 | # Linux trash folder which might appear on any partition or disk
29 | .Trash-*
30 | 
31 | # .nfs files are created when an open file is removed but is still being accessed
32 | .nfs*
33 | 
34 | # General
35 | .DS_Store
36 | .AppleDouble
37 | .LSOverride
38 | 
39 | # Icon must end with two \r
40 | Icon
41 | 
42 | # Thumbnails
43 | ._*
44 | 
45 | # Files that might appear in the root of a volume
46 | .DocumentRevisions-V100
47 | .fseventsd
48 | .Spotlight-V100
49 | .TemporaryItems
50 | .Trashes
51 | .VolumeIcon.icns
52 | .com.apple.timemachine.donotpresent
53 | 
54 | # Directories potentially created on remote AFP share
55 | .AppleDB
56 | .AppleDesktop
57 | Network Trash Folder
58 | Temporary Items
59 | .apdisk
60 | 
61 | # Windows thumbnail cache files
62 | Thumbs.db
63 | Thumbs.db:encryptable
64 | ehthumbs.db
65 | ehthumbs_vista.db
66 | 
67 | # Dump file
68 | *.stackdump
69 | 
70 | # Folder config file
71 | [Dd]esktop.ini
72 | 
73 | # Recycle Bin used on file shares
74 | $RECYCLE.BIN/
75 | 
76 | # Windows Installer files
77 | *.cab
78 | *.msi
79 | *.msix
80 | *.msm
81 | *.msp
82 | 
83 | # Windows shortcuts
84 | *.lnk
85 | 
86 | # Gradle
87 | .gradle
88 | build/
89 | 
90 | # Gradle Patch
91 | **/build/
92 | 
93 | # Common working directory
94 | run/
95 | 
96 | # Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
97 | !gradle-wrapper.jar
98 | 


--------------------------------------------------------------------------------
/HEADER.txt:
--------------------------------------------------------------------------------
 1 | Copyright (C) 2021 - 2025 Elytrium
 2 | 
 3 | This program is free software: you can redistribute it and/or modify
 4 | it under the terms of the GNU Affero General Public License as published by
 5 | the Free Software Foundation, either version 3 of the License, or
 6 | (at your option) any later version.
 7 | 
 8 | This program is distributed in the hope that it will be useful,
 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of
10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 | GNU Affero General Public License for more details.
12 | 
13 | You should have received a copy of the GNU Affero General Public License
14 | along with this program.  If not, see <http://www.gnu.org/licenses/>.


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
  1 |                     GNU AFFERO GENERAL PUBLIC LICENSE
  2 |                        Version 3, 19 November 2007
  3 | 
  4 |  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  5 |  Everyone is permitted to copy and distribute verbatim copies
  6 |  of this license document, but changing it is not allowed.
  7 | 
  8 |                             Preamble
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 19 | 
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140 | same work.
141 | 
142 |   2. Basic Permissions.
143 | 
144 |   All rights granted under this License are granted for the term of
145 | copyright on the Program, and are irrevocable provided the stated
146 | conditions are met.  This License explicitly affirms your unlimited
147 | permission to run the unmodified Program.  The output from running a
148 | covered work is covered by this License only if the output, given its
149 | content, constitutes a covered work.  This License acknowledges your
150 | rights of fair use or other equivalent, as provided by copyright law.
151 | 
152 |   You may make, run and propagate covered works that you do not
153 | convey, without conditions so long as your license otherwise remains
154 | in force.  You may convey covered works to others for the sole purpose
155 | of having them make modifications exclusively for you, or provide you
156 | with facilities for running those works, provided that you comply with
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159 | for you must do so exclusively on your behalf, under your direction
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163 |   Conveying under any other circumstances is permitted solely under
164 | the conditions stated below.  Sublicensing is not allowed; section 10
165 | makes it unnecessary.
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168 | 
169 |   No covered work shall be deemed part of an effective technological
170 | measure under any applicable law fulfilling obligations under article
171 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or
172 | similar laws prohibiting or restricting circumvention of such
173 | measures.
174 | 
175 |   When you convey a covered work, you waive any legal power to forbid
176 | circumvention of technological measures to the extent such circumvention
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179 | modification of the work as a means of enforcing, against the work's
180 | users, your or third parties' legal rights to forbid circumvention of
181 | technological measures.
182 | 
183 |   4. Conveying Verbatim Copies.
184 | 
185 |   You may convey verbatim copies of the Program's source code as you
186 | receive it, in any medium, provided that you conspicuously and
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188 | keep intact all notices stating that this License and any
189 | non-permissive terms added in accord with section 7 apply to the code;
190 | keep intact all notices of the absence of any warranty; and give all
191 | recipients a copy of this License along with the Program.
192 | 
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194 | and you may offer support or warranty protection for a fee.
195 | 
196 |   5. Conveying Modified Source Versions.
197 | 
198 |   You may convey a work based on the Program, or the modifications to
199 | produce it from the Program, in the form of source code under the
200 | terms of section 4, provided that you also meet all of these conditions:
201 | 
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203 |     it, and giving a relevant date.
204 | 
205 |     b) The work must carry prominent notices stating that it is
206 |     released under this License and any conditions added under section
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208 |     "keep intact all notices".
209 | 
210 |     c) You must license the entire work, as a whole, under this
211 |     License to anyone who comes into possession of a copy.  This
212 |     License will therefore apply, along with any applicable section 7
213 |     additional terms, to the whole of the work, and all its parts,
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217 | 
218 |     d) If the work has interactive user interfaces, each must display
219 |     Appropriate Legal Notices; however, if the Program has interactive
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221 |     work need not make them do so.
222 | 
223 |   A compilation of a covered work with other separate and independent
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285 |   A "User Product" is either (1) a "consumer product", which means any
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330 | 
331 |   7. Additional Terms.
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333 |   "Additional permissions" are terms that supplement the terms of this
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335 | Additional permissions that are applicable to the entire Program shall
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341 | 
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351 | that material) supplement the terms of this License with terms:
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355 | 
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395 |   8. Termination.
396 | 
397 |   You may not propagate or modify a covered work except as expressly
398 | provided under this License.  Any attempt otherwise to propagate or
399 | modify it is void, and will automatically terminate your rights under
400 | this License (including any patent licenses granted under the third
401 | paragraph of section 11).
402 | 
403 |   However, if you cease all violation of this License, then your
404 | license from a particular copyright holder is reinstated (a)
405 | provisionally, unless and until the copyright holder explicitly and
406 | finally terminates your license, and (b) permanently, if the copyright
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408 | prior to 60 days after the cessation.
409 | 
410 |   Moreover, your license from a particular copyright holder is
411 | reinstated permanently if the copyright holder notifies you of the
412 | violation by some reasonable means, this is the first time you have
413 | received notice of violation of this License (for any work) from that
414 | copyright holder, and you cure the violation prior to 30 days after
415 | your receipt of the notice.
416 | 
417 |   Termination of your rights under this section does not terminate the
418 | licenses of parties who have received copies or rights from you under
419 | this License.  If your rights have been terminated and not permanently
420 | reinstated, you do not qualify to receive new licenses for the same
421 | material under section 10.
422 | 
423 |   9. Acceptance Not Required for Having Copies.
424 | 
425 |   You are not required to accept this License in order to receive or
426 | run a copy of the Program.  Ancillary propagation of a covered work
427 | occurring solely as a consequence of using peer-to-peer transmission
428 | to receive a copy likewise does not require acceptance.  However,
429 | nothing other than this License grants you permission to propagate or
430 | modify any covered work.  These actions infringe copyright if you do
431 | not accept this License.  Therefore, by modifying or propagating a
432 | covered work, you indicate your acceptance of this License to do so.
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434 |   10. Automatic Licensing of Downstream Recipients.
435 | 
436 |   Each time you convey a covered work, the recipient automatically
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438 | propagate that work, subject to this License.  You are not responsible
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441 |   An "entity transaction" is a transaction transferring control of an
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447 | give under the previous paragraph, plus a right to possession of the
448 | Corresponding Source of the work from the predecessor in interest, if
449 | the predecessor has it or can get it with reasonable efforts.
450 | 
451 |   You may not impose any further restrictions on the exercise of the
452 | rights granted or affirmed under this License.  For example, you may
453 | not impose a license fee, royalty, or other charge for exercise of
454 | rights granted under this License, and you may not initiate litigation
455 | (including a cross-claim or counterclaim in a lawsuit) alleging that
456 | any patent claim is infringed by making, using, selling, offering for
457 | sale, or importing the Program or any portion of it.
458 | 
459 |   11. Patents.
460 | 
461 |   A "contributor" is a copyright holder who authorizes use under this
462 | License of the Program or a work on which the Program is based.  The
463 | work thus licensed is called the contributor's "contributor version".
464 | 
465 |   A contributor's "essential patent claims" are all patent claims
466 | owned or controlled by the contributor, whether already acquired or
467 | hereafter acquired, that would be infringed by some manner, permitted
468 | by this License, of making, using, or selling its contributor version,
469 | but do not include claims that would be infringed only as a
470 | consequence of further modification of the contributor version.  For
471 | purposes of this definition, "control" includes the right to grant
472 | patent sublicenses in a manner consistent with the requirements of
473 | this License.
474 | 
475 |   Each contributor grants you a non-exclusive, worldwide, royalty-free
476 | patent license under the contributor's essential patent claims, to
477 | make, use, sell, offer for sale, import and otherwise run, modify and
478 | propagate the contents of its contributor version.
479 | 
480 |   In the following three paragraphs, a "patent license" is any express
481 | agreement or commitment, however denominated, not to enforce a patent
482 | (such as an express permission to practice a patent or covenant not to
483 | sue for patent infringement).  To "grant" such a patent license to a
484 | party means to make such an agreement or commitment not to enforce a
485 | patent against the party.
486 | 
487 |   If you convey a covered work, knowingly relying on a patent license,
488 | and the Corresponding Source of the work is not available for anyone
489 | to copy, free of charge and under the terms of this License, through a
490 | publicly available network server or other readily accessible means,
491 | then you must either (1) cause the Corresponding Source to be so
492 | available, or (2) arrange to deprive yourself of the benefit of the
493 | patent license for this particular work, or (3) arrange, in a manner
494 | consistent with the requirements of this License, to extend the patent
495 | license to downstream recipients.  "Knowingly relying" means you have
496 | actual knowledge that, but for the patent license, your conveying the
497 | covered work in a country, or your recipient's use of the covered work
498 | in a country, would infringe one or more identifiable patents in that
499 | country that you have reason to believe are valid.
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505 | or convey a specific copy of the covered work, then the patent license
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507 | work and works based on it.
508 | 
509 |   A patent license is "discriminatory" if it does not include within
510 | the scope of its coverage, prohibits the exercise of, or is
511 | conditioned on the non-exercise of one or more of the rights that are
512 | specifically granted under this License.  You may not convey a covered
513 | work if you are a party to an arrangement with a third party that is
514 | in the business of distributing software, under which you make payment
515 | to the third party based on the extent of your activity of conveying
516 | the work, and under which the third party grants, to any of the
517 | parties who would receive the covered work from you, a discriminatory
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521 | contain the covered work, unless you entered into that arrangement,
522 | or that patent license was granted, prior to 28 March 2007.
523 | 
524 |   Nothing in this License shall be construed as excluding or limiting
525 | any implied license or other defenses to infringement that may
526 | otherwise be available to you under applicable patent law.
527 | 
528 |   12. No Surrender of Others' Freedom.
529 | 
530 |   If conditions are imposed on you (whether by court order, agreement or
531 | otherwise) that contradict the conditions of this License, they do not
532 | excuse you from the conditions of this License.  If you cannot convey a
533 | covered work so as to satisfy simultaneously your obligations under this
534 | License and any other pertinent obligations, then as a consequence you may
535 | not convey it at all.  For example, if you agree to terms that obligate you
536 | to collect a royalty for further conveying from those to whom you convey
537 | the Program, the only way you could satisfy both those terms and this
538 | License would be to refrain entirely from conveying the Program.
539 | 
540 |   13. Remote Network Interaction; Use with the GNU General Public License.
541 | 
542 |   Notwithstanding any other provision of this License, if you modify the
543 | Program, your modified version must prominently offer all users
544 | interacting with it remotely through a computer network (if your version
545 | supports such interaction) an opportunity to receive the Corresponding
546 | Source of your version by providing access to the Corresponding Source
547 | from a network server at no charge, through some standard or customary
548 | means of facilitating copying of software.  This Corresponding Source
549 | shall include the Corresponding Source for any work covered by version 3
550 | of the GNU General Public License that is incorporated pursuant to the
551 | following paragraph.
552 | 
553 |   Notwithstanding any other provision of this License, you have
554 | permission to link or combine any covered work with a work licensed
555 | under version 3 of the GNU General Public License into a single
556 | combined work, and to convey the resulting work.  The terms of this
557 | License will continue to apply to the part which is the covered work,
558 | but the work with which it is combined will remain governed by version
559 | 3 of the GNU General Public License.
560 | 
561 |   14. Revised Versions of this License.
562 | 
563 |   The Free Software Foundation may publish revised and/or new versions of
564 | the GNU Affero General Public License from time to time.  Such new versions
565 | will be similar in spirit to the present version, but may differ in detail to
566 | address new problems or concerns.
567 | 
568 |   Each version is given a distinguishing version number.  If the
569 | Program specifies that a certain numbered version of the GNU Affero General
570 | Public License "or any later version" applies to it, you have the
571 | option of following the terms and conditions either of that numbered
572 | version or of any later version published by the Free Software
573 | Foundation.  If the Program does not specify a version number of the
574 | GNU Affero General Public License, you may choose any version ever published
575 | by the Free Software Foundation.
576 | 
577 |   If the Program specifies that a proxy can decide which future
578 | versions of the GNU Affero General Public License can be used, that proxy's
579 | public statement of acceptance of a version permanently authorizes you
580 | to choose that version for the Program.
581 | 
582 |   Later license versions may give you additional or different
583 | permissions.  However, no additional obligations are imposed on any
584 | author or copyright holder as a result of your choosing to follow a
585 | later version.
586 | 
587 |   15. Disclaimer of Warranty.
588 | 
589 |   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
590 | APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
591 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
592 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
593 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
594 | PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
595 | IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
596 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
597 | 
598 |   16. Limitation of Liability.
599 | 
600 |   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
601 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
602 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
603 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
604 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
605 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
606 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
607 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
608 | SUCH DAMAGES.
609 | 
610 |   17. Interpretation of Sections 15 and 16.
611 | 
612 |   If the disclaimer of warranty and limitation of liability provided
613 | above cannot be given local legal effect according to their terms,
614 | reviewing courts shall apply local law that most closely approximates
615 | an absolute waiver of all civil liability in connection with the
616 | Program, unless a warranty or assumption of liability accompanies a
617 | copy of the Program in return for a fee.
618 | 
619 |                      END OF TERMS AND CONDITIONS
620 | 
621 |             How to Apply These Terms to Your New Programs
622 | 
623 |   If you develop a new program, and you want it to be of the greatest
624 | possible use to the public, the best way to achieve this is to make it
625 | free software which everyone can redistribute and change under these terms.
626 | 
627 |   To do so, attach the following notices to the program.  It is safest
628 | to attach them to the start of each source file to most effectively
629 | state the exclusion of warranty; and each file should have at least
630 | the "copyright" line and a pointer to where the full notice is found.
631 | 
632 |     <one line to give the program's name and a brief idea of what it does.>
633 |     Copyright (C) <year>  <name of author>
634 | 
635 |     This program is free software: you can redistribute it and/or modify
636 |     it under the terms of the GNU Affero General Public License as published
637 |     by the Free Software Foundation, either version 3 of the License, or
638 |     (at your option) any later version.
639 | 
640 |     This program is distributed in the hope that it will be useful,
641 |     but WITHOUT ANY WARRANTY; without even the implied warranty of
642 |     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
643 |     GNU Affero General Public License for more details.
644 | 
645 |     You should have received a copy of the GNU Affero General Public License
646 |     along with this program.  If not, see <https://www.gnu.org/licenses/>.
647 | 
648 | Also add information on how to contact you by electronic and paper mail.
649 | 
650 |   If your software can interact with users remotely through a computer
651 | network, you should also make sure that it provides a way for users to
652 | get its source.  For example, if your program is a web application, its
653 | interface could display a "Source" link that leads users to an archive
654 | of the code.  There are many ways you could offer source, and different
655 | solutions will be better for different programs; see section 13 for the
656 | specific requirements.
657 | 
658 |   You should also get your employer (if you work as a programmer) or school,
659 | if any, to sign a "copyright disclaimer" for the program, if necessary.
660 | For more information on this, and how to apply and follow the GNU AGPL, see
661 | <https://www.gnu.org/licenses/>.
662 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | <img src="https://elytrium.net/src/img/elytrium.webp" alt="Elytrium" align="right">
 2 | 
 3 | # VelocityTools
 4 | 
 5 | [![Join our Discord](https://img.shields.io/discord/775778822334709780.svg?logo=discord&label=Discord)](https://ely.su/discord)
 6 | ![Modrinth Game Versions](https://img.shields.io/modrinth/game-versions/4mehh1CR?logo=data%3Aimage%2Fpng%3Bbase64%2CiVBORw0KGgoAAAANSUhEUgAAAIkAAAA8CAMAAABl%2FWk9AAABAlBMVEUAAAAApcwAqM4Apc4Ap88Apc4Apc4AqM0Aps0Ap84Apc0ApswApc4Aps0Ap80Aps4Ap80Aps0Ap84Aps0Aps4Aps0EqdAHrNMKrtQNsdcRtNoVttwWtt0buuAbuuAbuuAauuAbuuEauuAbu%2BAbuuAbuuEbu%2BAbuuEau%2BAbuuAbuuEau%2BEauuAbuuAbueAbuuAau%2BEbuuAauuAauuAbuuEauuEau%2BAbuuAau%2BEbu%2BAWtt0bvOAau%2BEZuOEYt94cvOEUtt8YudsVsdYAn90A%2F%2F8CqM8Ap84Bp84Aps0Ap80Aps0Aps0Aps0auuAauuAbuuAbuuAauuAauuAbuuAAps0buuCTPBtaAAAAVHRSTlMAIhwzOj5ESk1aZnB3f4iTnKWqrrW7xMDCxdDa3%2BDc2tbMxcC8uLOvp6KflpCHgXl1b15ZVE5EQDovKSQhHRcRDAgFAgHL1Nne5e30%2FPj08e3q5vwu6%2BLEAAADTUlEQVR42sXXhXLDPAzAcY2ZGcrMzAzjYhK9%2F6N8YA8zW62Xwu9gvOp6yt8JTKmSjXnHA18Jlqn63xAj5IbLGqWWi%2FvH%2BJ2jufwh3oUXPYSGMmlYjFLcN0aRkc%2BJzKACi5DUUSzQBMj22aeuNsxfUTaIjS1qBJkozF3XRS9HBrkczFsGJVwd9vMEcqMazFfLhhIF9vO2Hd%2B5T05n4GAVJJIoEQAmhZ%2BujFl4lYxSH6KYXmY%2Fb4y%2BfevBmIVDEIqiRFTw8%2FGrMQMnIFLuo9iwzg%2FCnz%2B%2F7RnW7YFIACWSwASRm%2BGqXLZAoIASthaPHprojwbh7Xh%2Fkr3NtlrUMsC40UwjVuW1DH%2BVlkaty36exd9uDKn9OUStyKPmQBN6VbbgrxIToybSf5rle0JHrV%2F5iJrQ%2FZtsT1bgbyJTRU1lVd6OdoV23kdc2dnoqkRNa3xETebSUNRjNdvrGcaFoCZ%2BFBsVP6ImNXhRHmUVYKVnWiYyarozVgemioRrQ9U2wA775BxMOr%2Bj5gimCk34kELCnaFqDWCdfXJER80eTLIhvokh4dZQwt%2BJ7jm%2FvoRR40PkG3R%2F6ZXtPV5McrbXZqXcOz1aEUdtGONDiNQHKHXPdo97WQPOStSGJeUCcw%2BzSPz3aEXgt2atBVzHO82W9NpgCX8ATpiGKKaCDh37%2FjIwdQ2F9B8HTx0s4Tvg%2Bz5EyKnjuyFvWzevTxH7Q7DEh0yyYx6C0%2BrAxKYJ7PHGyh%2B1AKDUR8bm5UOYefnjX9tN3J9Y1ztpAiSRlgCmNkKz8ZsxO0cAXT%2BS9CIwOSpq1r3wC4NkawATIaJm3TM7i3Uk%2Bbt8VVzyqFl38H5h0FLAVIaSqFn3fNDmDfUgqV8CJiOJGu14pQNTq42QZG8CE5JEjXIKXVCQQ1oQmKZN%2Fa5xU%2FkgpKWBSapHbQPUtF1IGpT5pqhH7QgUVYZIcrZ4U5Sj1ttvgZo00vxN6KZ1ZO6UotZ7NnvYbwMhjLSBxza7qJ0AoelEwqyjVgdCaYAEMmrqykBJ4VRuZpH3DpACOIXB6wwGWQNaw4YT9dOblq21YJJiH0maP1GDxUigzMgdy9VhcTo%2B%2FG3ojqbLsGh1jRhisQp95Ma%2BWK4Gy1T0DLQlDPEv1X2Xr4VYWO8AAAAASUVORK5CYII%3D)
 7 | ![Modrinth Downloads](https://img.shields.io/modrinth/dt/4mehh1CR?logo=data%3Aimage%2Fsvg%2Bxml%3Bbase64%2CPHN2ZyB3aWR0aD0iNTEyIiBoZWlnaHQ9IjUxNCIgdmlld0JveD0iMCAwIDUxMiA1MTQiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI%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%2BCjwvc3ZnPg%3D%3D)
 8 | [![Proxy Stats](https://img.shields.io/bstats/servers/12708?logo=minecraft&label=Servers)](https://bstats.org/plugin/velocity/VelocityTools/12708)
 9 | [![Proxy Stats](https://img.shields.io/bstats/players/12708?logo=minecraft&label=Players)](https://bstats.org/plugin/velocity/VelocityTools/12708)
10 | 
11 | Some useful tools for Velocity. \
12 | [Modrinth](https://modrinth.com/plugin/velocitytools)
13 | 
14 | ## Features of VelocityTools
15 | 
16 | - [Protocol](https://wiki.vg/Protocol_History) Blocker (prohibits connection from certain versions)
17 | - [Hostnames](https://en.wikipedia.org/wiki/Domain_name) Manager (denies connection from a specific hostname, see details below)
18 | - Brand Changer aka Brand Rewriter (changes brand in game and in ping requests)
19 | 
20 | ## Commands and permissions
21 | 
22 | - ***velocitytools.admin.reload* | /velocitytools reload** - Reload Plugin Command
23 | - ***velocitytools.command.alert* | /alert** - Send Proxy-Wide Alert Command
24 | - ***velocitytools.command.find* | /find** - Find Player Server Command
25 | - ***velocitytools.command.send* | /send** - Send Player to Server Command
26 | - ***velocitytools.command.hub* | /hub** - Hub Command
27 | - ***velocitytools.command.hub.bypass.<servername>*** - Disabled-Servers Bypass Permission
28 | 
29 | ## Donation
30 | 
31 | Your donations are really appreciated. Donations wallets/links/cards:
32 | 
33 | - MasterCard Debit Card (Tinkoff Bank): ``5536 9140 0599 1975``
34 | - Qiwi Wallet: ``PFORG`` or [this link](https://my.qiwi.com/form/Petr-YSpyiLt9c6)
35 | - YooMoney Wallet: ``4100 1721 8467 044`` or [this link](https://yoomoney.ru/quickpay/shop-widget?writer=seller&targets=Donation&targets-hint=&default-sum=&button-text=11&payment-type-choice=on&mobile-payment-type-choice=on&hint=&successURL=&quickpay=shop&account=410017218467044)
36 | - Monero (XMR): 86VQyCz68ApebfFgrzRFAuYLdvd3qG8iT9RHcru9moQkJR9W2Q89Gt3ecFQcFu6wncGwGJsMS9E8Bfr9brztBNbX7Q2rfYS
37 | 


--------------------------------------------------------------------------------
/VERSION:
--------------------------------------------------------------------------------
1 | 1.2.4
2 | 


--------------------------------------------------------------------------------
/build.gradle:
--------------------------------------------------------------------------------
 1 | plugins() {
 2 |   id("java")
 3 | 
 4 |   id("com.gradleup.shadow").version("8.3.6")
 5 | 
 6 |   id("checkstyle")
 7 |   id("com.github.spotbugs").version("6.1.7")
 8 |   id("org.cadixdev.licenser").version("0.6.1")
 9 | 
10 |   id("com.github.gmazzo.buildconfig").version("4.1.2") // Kotlin :skull:
11 | }
12 | 
13 | this.group = "net.elytrium"
14 | this.version = "1.2.4"
15 | 
16 | compileJava() {
17 |   sourceCompatibility = 17
18 |   targetCompatibility = 17
19 |   options.getRelease().set(17)
20 | 
21 |   options.setEncoding("UTF-8")
22 | }
23 | 
24 | repositories() {
25 |   mavenCentral()
26 | 
27 |   maven {
28 |     name = "papermc-repo"
29 |     url = "https://repo.papermc.io/repository/maven-public/"
30 |   }
31 |   maven {
32 |     name = "elytrium-repo"
33 |     url = "https://maven.elytrium.net/repo/"
34 |   }
35 | }
36 | 
37 | dependencies() {
38 |   annotationProcessor("net.java.dev.jna:jna-platform:5.13.0")
39 | 
40 |   compileOnly("com.github.spotbugs:spotbugs-annotations:4.9.3")
41 | 
42 |   compileOnly("com.velocitypowered:velocity-api:3.4.0-SNAPSHOT")
43 |   annotationProcessor("com.velocitypowered:velocity-api:3.4.0-SNAPSHOT")
44 |   compileOnly("com.velocitypowered:velocity-proxy:3.4.0-SNAPSHOT") // From Elytrium Repo.
45 | 
46 |   // Needs for some velocity methods.
47 |   compileOnly("io.netty:netty-transport:4.1.101.Final")
48 |   compileOnly("it.unimi.dsi:fastutil-core:8.5.12")
49 | 
50 |   // To suppress VulnerableLibrariesLocal of velocity-api dependency.
51 |   compileOnly("org.yaml:snakeyaml:2.2")
52 | 
53 |   implementation("net.elytrium.commons:kyori:1.3.0")
54 |   implementation("net.elytrium.commons:velocity:1.3.0")
55 |   implementation("net.elytrium.commons:utils:1.3.0")
56 |   implementation("net.elytrium:serializer:1.1.1")
57 |   implementation("net.elytrium:fastprepare:1.0.11")
58 | 
59 |   implementation("org.bstats:bstats-velocity:3.0.2")
60 | }
61 | 
62 | shadowJar() {
63 |   archiveClassifier = null
64 | 
65 |   minimize()
66 |   enableRelocation = true
67 |   relocationPrefix = "net.elytrium.velocitytools.3rdparty"
68 | }
69 | 
70 | checkstyle() {
71 |   toolVersion = "10.12.1"
72 | 
73 |   configFile = file(".config/checkstyle/checkstyle.xml")
74 |   configProperties = ["configDirectory": "$rootDir/.config/checkstyle"]
75 |   maxErrors = 0
76 |   maxWarnings = 0
77 | }
78 | 
79 | spotbugsMain() {
80 |   reports.register("html") {
81 |     required = true
82 |     outputLocation.fileValue(file("${project.layout.buildDirectory.get()}/reports/spotbugs/main/spotbugs.html"))
83 |     stylesheet = "fancy-hist.xsl"
84 |   }
85 | }
86 | 
87 | license() {
88 |   header = file("HEADER.txt")
89 | 
90 |   exclude("**/BuildConfig.java")
91 | }
92 | 
93 | buildConfig() {
94 |   packageName("net.elytrium.velocitytools")
95 |   buildConfigField("String", "VERSION", "\"$version\"")
96 | }
97 | 
98 | assemble.dependsOn(shadowJar)
99 | 


--------------------------------------------------------------------------------
/gradle.properties:
--------------------------------------------------------------------------------
1 | org.gradle.parallel=true
2 | org.gradle.caching=true
3 | 


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/Elytrium/VelocityTools/ebf1cc5ca2d9302a90c63e5b72ad1e4d92ccb5be/gradle/wrapper/gradle-wrapper.jar


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | distributionBase=GRADLE_USER_HOME
2 | distributionPath=wrapper/dists
3 | distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
4 | networkTimeout=10000
5 | validateDistributionUrl=true
6 | zipStoreBase=GRADLE_USER_HOME
7 | zipStorePath=wrapper/dists
8 | 


--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
  1 | #!/bin/sh
  2 | 
  3 | #
  4 | # Copyright © 2015-2021 the original authors.
  5 | #
  6 | # Licensed under the Apache License, Version 2.0 (the "License");
  7 | # you may not use this file except in compliance with the License.
  8 | # You may obtain a copy of the License at
  9 | #
 10 | #      https://www.apache.org/licenses/LICENSE-2.0
 11 | #
 12 | # Unless required by applicable law or agreed to in writing, software
 13 | # distributed under the License is distributed on an "AS IS" BASIS,
 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15 | # See the License for the specific language governing permissions and
 16 | # limitations under the License.
 17 | #
 18 | 
 19 | ##############################################################################
 20 | #
 21 | #   Gradle start up script for POSIX generated by Gradle.
 22 | #
 23 | #   Important for running:
 24 | #
 25 | #   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
 26 | #       noncompliant, but you have some other compliant shell such as ksh or
 27 | #       bash, then to run this script, type that shell name before the whole
 28 | #       command line, like:
 29 | #
 30 | #           ksh Gradle
 31 | #
 32 | #       Busybox and similar reduced shells will NOT work, because this script
 33 | #       requires all of these POSIX shell features:
 34 | #         * functions;
 35 | #         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
 36 | #           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
 37 | #         * compound commands having a testable exit status, especially «case»;
 38 | #         * various built-in commands including «command», «set», and «ulimit».
 39 | #
 40 | #   Important for patching:
 41 | #
 42 | #   (2) This script targets any POSIX shell, so it avoids extensions provided
 43 | #       by Bash, Ksh, etc; in particular arrays are avoided.
 44 | #
 45 | #       The "traditional" practice of packing multiple parameters into a
 46 | #       space-separated string is a well documented source of bugs and security
 47 | #       problems, so this is (mostly) avoided, by progressively accumulating
 48 | #       options in "$@", and eventually passing that to Java.
 49 | #
 50 | #       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
 51 | #       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
 52 | #       see the in-line comments for details.
 53 | #
 54 | #       There are tweaks for specific operating systems such as AIX, CygWin,
 55 | #       Darwin, MinGW, and NonStop.
 56 | #
 57 | #   (3) This script is generated from the Groovy template
 58 | #       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 59 | #       within the Gradle project.
 60 | #
 61 | #       You can find Gradle at https://github.com/gradle/gradle/.
 62 | #
 63 | ##############################################################################
 64 | 
 65 | # Attempt to set APP_HOME
 66 | 
 67 | # Resolve links: $0 may be a link
 68 | app_path=$0
 69 | 
 70 | # Need this for daisy-chained symlinks.
 71 | while
 72 |     APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
 73 |     [ -h "$app_path" ]
 74 | do
 75 |     ls=$( ls -ld "$app_path" )
 76 |     link=${ls#*' -> '}
 77 |     case $link in             #(
 78 |       /*)   app_path=$link ;; #(
 79 |       *)    app_path=$APP_HOME$link ;;
 80 |     esac
 81 | done
 82 | 
 83 | # This is normally unused
 84 | # shellcheck disable=SC2034
 85 | APP_BASE_NAME=${0##*/}
 86 | # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
 87 | APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
 88 | 
 89 | # Use the maximum available, or set MAX_FD != -1 to use that value.
 90 | MAX_FD=maximum
 91 | 
 92 | warn () {
 93 |     echo "$*"
 94 | } >&2
 95 | 
 96 | die () {
 97 |     echo
 98 |     echo "$*"
 99 |     echo
100 |     exit 1
101 | } >&2
102 | 
103 | # OS specific support (must be 'true' or 'false').
104 | cygwin=false
105 | msys=false
106 | darwin=false
107 | nonstop=false
108 | case "$( uname )" in                #(
109 |   CYGWIN* )         cygwin=true  ;; #(
110 |   Darwin* )         darwin=true  ;; #(
111 |   MSYS* | MINGW* )  msys=true    ;; #(
112 |   NONSTOP* )        nonstop=true ;;
113 | esac
114 | 
115 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
116 | 
117 | 
118 | # Determine the Java command to use to start the JVM.
119 | if [ -n "$JAVA_HOME" ] ; then
120 |     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
121 |         # IBM's JDK on AIX uses strange locations for the executables
122 |         JAVACMD=$JAVA_HOME/jre/sh/java
123 |     else
124 |         JAVACMD=$JAVA_HOME/bin/java
125 |     fi
126 |     if [ ! -x "$JAVACMD" ] ; then
127 |         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
128 | 
129 | Please set the JAVA_HOME variable in your environment to match the
130 | location of your Java installation."
131 |     fi
132 | else
133 |     JAVACMD=java
134 |     if ! command -v java >/dev/null 2>&1
135 |     then
136 |         die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
137 | 
138 | Please set the JAVA_HOME variable in your environment to match the
139 | location of your Java installation."
140 |     fi
141 | fi
142 | 
143 | # Increase the maximum file descriptors if we can.
144 | if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
145 |     case $MAX_FD in #(
146 |       max*)
147 |         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
148 |         # shellcheck disable=SC2039,SC3045
149 |         MAX_FD=$( ulimit -H -n ) ||
150 |             warn "Could not query maximum file descriptor limit"
151 |     esac
152 |     case $MAX_FD in  #(
153 |       '' | soft) :;; #(
154 |       *)
155 |         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
156 |         # shellcheck disable=SC2039,SC3045
157 |         ulimit -n "$MAX_FD" ||
158 |             warn "Could not set maximum file descriptor limit to $MAX_FD"
159 |     esac
160 | fi
161 | 
162 | # Collect all arguments for the java command, stacking in reverse order:
163 | #   * args from the command line
164 | #   * the main class name
165 | #   * -classpath
166 | #   * -D...appname settings
167 | #   * --module-path (only if needed)
168 | #   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
169 | 
170 | # For Cygwin or MSYS, switch paths to Windows format before running java
171 | if "$cygwin" || "$msys" ; then
172 |     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
173 |     CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
174 | 
175 |     JAVACMD=$( cygpath --unix "$JAVACMD" )
176 | 
177 |     # Now convert the arguments - kludge to limit ourselves to /bin/sh
178 |     for arg do
179 |         if
180 |             case $arg in                                #(
181 |               -*)   false ;;                            # don't mess with options #(
182 |               /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
183 |                     [ -e "$t" ] ;;                      #(
184 |               *)    false ;;
185 |             esac
186 |         then
187 |             arg=$( cygpath --path --ignore --mixed "$arg" )
188 |         fi
189 |         # Roll the args list around exactly as many times as the number of
190 |         # args, so each arg winds up back in the position where it started, but
191 |         # possibly modified.
192 |         #
193 |         # NB: a `for` loop captures its iteration list before it begins, so
194 |         # changing the positional parameters here affects neither the number of
195 |         # iterations, nor the values presented in `arg`.
196 |         shift                   # remove old arg
197 |         set -- "$@" "$arg"      # push replacement arg
198 |     done
199 | fi
200 | 
201 | 
202 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
203 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
204 | 
205 | # Collect all arguments for the java command:
206 | #   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
207 | #     and any embedded shellness will be escaped.
208 | #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
209 | #     treated as '${Hostname}' itself on the command line.
210 | 
211 | set -- \
212 |         "-Dorg.gradle.appname=$APP_BASE_NAME" \
213 |         -classpath "$CLASSPATH" \
214 |         org.gradle.wrapper.GradleWrapperMain \
215 |         "$@"
216 | 
217 | # Stop when "xargs" is not available.
218 | if ! command -v xargs >/dev/null 2>&1
219 | then
220 |     die "xargs is not available"
221 | fi
222 | 
223 | # Use "xargs" to parse quoted args.
224 | #
225 | # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
226 | #
227 | # In Bash we could simply go:
228 | #
229 | #   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
230 | #   set -- "${ARGS[@]}" "$@"
231 | #
232 | # but POSIX shell has neither arrays nor command substitution, so instead we
233 | # post-process each arg (as a line of input to sed) to backslash-escape any
234 | # character that might be a shell metacharacter, then use eval to reverse
235 | # that process (while maintaining the separation between arguments), and wrap
236 | # the whole thing up as a single "set" statement.
237 | #
238 | # This will of course break if any of these variables contains a newline or
239 | # an unmatched quote.
240 | #
241 | 
242 | eval "set -- $(
243 |         printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
244 |         xargs -n1 |
245 |         sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
246 |         tr '\n' ' '
247 |     )" '"$@"'
248 | 
249 | exec "$JAVACMD" "$@"
250 | 


--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
 1 | @rem
 2 | @rem Copyright 2015 the original author or authors.
 3 | @rem
 4 | @rem Licensed under the Apache License, Version 2.0 (the "License");
 5 | @rem you may not use this file except in compliance with the License.
 6 | @rem You may obtain a copy of the License at
 7 | @rem
 8 | @rem      https://www.apache.org/licenses/LICENSE-2.0
 9 | @rem
10 | @rem Unless required by applicable law or agreed to in writing, software
11 | @rem distributed under the License is distributed on an "AS IS" BASIS,
12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | @rem See the License for the specific language governing permissions and
14 | @rem limitations under the License.
15 | @rem
16 | 
17 | @if "%DEBUG%"=="" @echo off
18 | @rem ##########################################################################
19 | @rem
20 | @rem  Gradle startup script for Windows
21 | @rem
22 | @rem ##########################################################################
23 | 
24 | @rem Set local scope for the variables with windows NT shell
25 | if "%OS%"=="Windows_NT" setlocal
26 | 
27 | set DIRNAME=%~dp0
28 | if "%DIRNAME%"=="" set DIRNAME=.
29 | @rem This is normally unused
30 | set APP_BASE_NAME=%~n0
31 | set APP_HOME=%DIRNAME%
32 | 
33 | @rem Resolve any "." and ".." in APP_HOME to make it shorter.
34 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
35 | 
36 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
37 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
38 | 
39 | @rem Find java.exe
40 | if defined JAVA_HOME goto findJavaFromJavaHome
41 | 
42 | set JAVA_EXE=java.exe
43 | %JAVA_EXE% -version >NUL 2>&1
44 | if %ERRORLEVEL% equ 0 goto execute
45 | 
46 | echo.
47 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
48 | echo.
49 | echo Please set the JAVA_HOME variable in your environment to match the
50 | echo location of your Java installation.
51 | 
52 | goto fail
53 | 
54 | :findJavaFromJavaHome
55 | set JAVA_HOME=%JAVA_HOME:"=%
56 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
57 | 
58 | if exist "%JAVA_EXE%" goto execute
59 | 
60 | echo.
61 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
62 | echo.
63 | echo Please set the JAVA_HOME variable in your environment to match the
64 | echo location of your Java installation.
65 | 
66 | goto fail
67 | 
68 | :execute
69 | @rem Setup the command line
70 | 
71 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
72 | 
73 | 
74 | @rem Execute Gradle
75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
76 | 
77 | :end
78 | @rem End local scope for the variables with windows NT shell
79 | if %ERRORLEVEL% equ 0 goto mainEnd
80 | 
81 | :fail
82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
83 | rem the _cmd.exe /c_ return code!
84 | set EXIT_CODE=%ERRORLEVEL%
85 | if %EXIT_CODE% equ 0 set EXIT_CODE=1
86 | if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
87 | exit /b %EXIT_CODE%
88 | 
89 | :mainEnd
90 | if "%OS%"=="Windows_NT" endlocal
91 | 
92 | :omega
93 | 


--------------------------------------------------------------------------------
/settings.gradle:
--------------------------------------------------------------------------------
1 | this.rootProject.setName("velocity-tools")
2 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/Settings.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools;
 19 | 
 20 | import java.util.List;
 21 | import net.elytrium.commons.kyori.serialization.Serializers;
 22 | import net.elytrium.serializer.annotations.Comment;
 23 | import net.elytrium.serializer.annotations.CommentValue;
 24 | import net.elytrium.serializer.annotations.Final;
 25 | import net.elytrium.serializer.language.object.YamlSerializable;
 26 | 
 27 | public class Settings extends YamlSerializable {
 28 | 
 29 |   public static final Settings IMP = new Settings();
 30 | 
 31 |   @Final
 32 |   public String VERSION = BuildConfig.VERSION;
 33 | 
 34 |   @Comment({
 35 |       @CommentValue("Available serializers:"),
 36 |       @CommentValue("LEGACY_AMPERSAND - \"&c&lExample &c&9Text\"."),
 37 |       @CommentValue("LEGACY_SECTION - \"§c§lExample §c§9Text\"."),
 38 |       @CommentValue("MINIMESSAGE - \"<bold><red>Example</red> <blue>Text</blue></bold>\". (https://webui.adventure.kyori.net/)"),
 39 |       @CommentValue("GSON - \"[{\"text\":\"Example\",\"bold\":true,\"color\":\"red\"},{\"text\":\" \",\"bold\":true},{\"text\":\"Text\",\"bold\":true,\"color\":\"blue\"}]\". (https://minecraft.tools/en/json_text.php/)"),
 40 |       @CommentValue("GSON_COLOR_DOWNSAMPLING - Same as GSON, but uses downsampling.")
 41 |   })
 42 |   public Serializers SERIALIZER = Serializers.LEGACY_AMPERSAND;
 43 | 
 44 |   public MAIN MAIN = new MAIN();
 45 |   public COMMANDS COMMANDS = new COMMANDS();
 46 |   public TOOLS TOOLS = new TOOLS();
 47 | 
 48 |   public static class MAIN {
 49 | 
 50 |     @Comment(@CommentValue("Should this plugin check for new updates?"))
 51 |     public boolean CHECK_FOR_UPDATES = true;
 52 | 
 53 |     @Comment({
 54 |         @CommentValue("VelocityTools will consume more RAM if this option is enabled, but compatibility with other plugins will be better"),
 55 |         @CommentValue("Enable it if you have a plugin installed that bypasses compression (e.g. Geyser)")
 56 |     })
 57 |     public boolean SAVE_UNCOMPRESSED_PACKETS = true;
 58 |   }
 59 | 
 60 |   @Comment({
 61 |       @CommentValue("Don't use {NL}, use \\n for new line. Ampersand (&) color codes are supported too.\n"),
 62 |       @CommentValue(),
 63 |       @CommentValue("Permissions:"),
 64 |       @CommentValue("  │"),
 65 |       @CommentValue("  └── Commands:"),
 66 |       @CommentValue("      │"),
 67 |       @CommentValue("      ├── /velocitytools reload"),
 68 |       @CommentValue("      │   └── velocitytools.admin.reload"),
 69 |       @CommentValue("      ├── /alert"),
 70 |       @CommentValue("      │   └── velocitytools.command.alert"),
 71 |       @CommentValue("      ├── /find"),
 72 |       @CommentValue("      │   └── velocitytools.command.find"),
 73 |       @CommentValue("      ├── /send"),
 74 |       @CommentValue("      │   └── velocitytools.command.send"),
 75 |       @CommentValue("      └── /hub"),
 76 |       @CommentValue("          ├── velocitytools.command.hub"),
 77 |       @CommentValue("          └── velocitytools.command.hub.bypass.<servername> (disabled-servers bypass permission)"),
 78 |       @CommentValue()
 79 |   })
 80 |   public static class COMMANDS {
 81 | 
 82 |     public ALERT ALERT = new ALERT();
 83 |     public FIND FIND = new FIND();
 84 |     public SEND SEND = new SEND();
 85 |     public HUB HUB = new HUB();
 86 | 
 87 |     public String RATELIMITED = "&cPlease wait before next usage!";
 88 | 
 89 |     @Comment(@CommentValue("Ratelimit delay in milliseconds"))
 90 |     public int RATELIMIT_DELAY = 1000;
 91 | 
 92 |     public static class ALERT {
 93 | 
 94 |       public boolean ENABLED = true;
 95 |       public String PREFIX = "&8[&4Alert&8] &r{0}";
 96 |       public String MESSAGE_NEEDED = "&cYou must supply the message.";
 97 |       public String EMPTY_PROXY = "&cNo one is connected to this proxy!";
 98 |     }
 99 | 
100 |     public static class FIND {
101 | 
102 |       public boolean ENABLED = true;
103 |       public String USERNAME_NEEDED = "&cYou must supply the username.";
104 |       public String PLAYER_ONLINE_AT = "&6{0} &fis online at &6{1}";
105 |       public String PLAYER_NOT_ONLINE = "&6{0} &fis not online.";
106 |     }
107 | 
108 |     public static class SEND {
109 | 
110 |       @Comment(@CommentValue("Velocity already has /send command, so this one is disabled by default to not replace it."))
111 |       public boolean ENABLED = false;
112 |       public String CONSOLE = "CONSOLE";
113 |       public String NOT_ENOUGH_ARGUMENTS = "&fNot enough arguments. Usage: &6/send <server|player|all|current> <target>";
114 |       @Comment(@CommentValue("Set to \"\" to disable."))
115 |       public String YOU_GOT_SUMMONED = "&fSummoned to &6{0} &fby &6{1}";
116 |       public String PLAYER_NOT_ONLINE = "&6{0} &fis not online.";
117 |       public String CALLBACK = "&aAttempting to send {0} players to {1}";
118 |       public String NOT_ON_SERVER = "&cError: You are not on server.";
119 |     }
120 | 
121 |     public static class HUB {
122 | 
123 |       public boolean ENABLED = true;
124 |       public List<String> SERVERS = List.of("hub-1", "hub-2");
125 |       @Comment(@CommentValue("Set to \"\" to disable."))
126 |       public String YOU_GOT_MOVED = "&aYou have been moved to a hub!";
127 |       public String DISABLED_SERVER = "&cYou cannot use this command here.";
128 |       public List<String> DISABLED_SERVERS = List.of("foo", "bar");
129 |       public List<String> ALIASES = List.of("hub", "lobby");
130 |     }
131 |   }
132 | 
133 |   public static class TOOLS {
134 | 
135 |     @Comment(@CommentValue("Hides the Legacy Ping message."))
136 |     public boolean DISABLE_LEGACY_PING = true;
137 |     @Comment(@CommentValue("Hides the \"... provided invalid protocol ...\" message. Helps with some types of attacks. (https://media.discordapp.net/attachments/868930650537857024/921383075454259300/unknown.png)"))
138 |     public boolean DISABLE_INVALID_PROTOCOL = true;
139 | 
140 |     public PROTOCOL_BLOCKER PROTOCOL_BLOCKER = new PROTOCOL_BLOCKER();
141 |     public BRAND_CHANGER BRAND_CHANGER = new BRAND_CHANGER();
142 |     public HOSTNAMES_MANAGER HOSTNAMES_MANAGER = new HOSTNAMES_MANAGER();
143 | 
144 |     public static class PROTOCOL_BLOCKER {
145 | 
146 |       public boolean BLOCK_JOIN = true;
147 |       public boolean BLOCK_PING = false;
148 |       @Comment(@CommentValue("If true, all protocols except those listed below will be blocked."))
149 |       public boolean WHITELIST = false;
150 |       @Comment({
151 |           @CommentValue("You can set either a protocol number here (e.g. '340' for 1.12.2) or a Minecraft version below (e.g. '1.12.2')"),
152 |           @CommentValue("You can find a list of protocols here: https://wiki.vg/Protocol_version_numbers"),
153 |       })
154 |       public List<Integer> PROTOCOLS = List.of(9999, 9998);
155 |       @Comment({
156 |           @CommentValue("List of versions:"),
157 |           @CommentValue("1.7.2, 1.7.6, 1.8, 1.9, 1.9.1, 1.9.2, 1.9.4, 1.10, 1.11, 1.11.1, 1.12, 1.12.1, 1.12.2,"),
158 |           @CommentValue("1.13, 1.13.1, 1.13.2, 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2,"),
159 |           @CommentValue("1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.17, 1.17.1, 1.18, 1.18.2, 1.19, 1.19.1, 1.19.3, 1.19.4,"),
160 |           @CommentValue("1.20, 1.20.2, 1.20.3, 1.20.5, 1.21, 1.21.2, 1.21.4, 1.21.5, LATEST"),
161 |       })
162 |       public List<String> VERSIONS = List.of("1.7.2");
163 |       public String MINIMUM_VERSION = "1.7.2";
164 |       public String MAXIMUM_VERSION = "LATEST";
165 |       @Comment(@CommentValue("For \"block-ping\" option."))
166 |       public String BRAND = "Version is not supported!";
167 |       @Comment(@CommentValue("For \"block-ping\", set to \"\" to disable."))
168 |       public String MOTD = "&cVersion is not supported!\n&ePlease, join with Minecraft 1.12.2 or newer.";
169 |       @Comment(@CommentValue("For \"block-joining\" option."))
170 |       public String KICK_REASON = "&cYour version is unsupported!";
171 |     }
172 | 
173 |     public static class BRAND_CHANGER {
174 | 
175 |       public boolean REWRITE_IN_PING = true;
176 |       public boolean REWRITE_IN_GAME = true;
177 |       public String PING_BRAND = "YourServer 1.12.2-1.21.5";
178 |       @Comment(@CommentValue("For ping."))
179 |       public boolean SHOW_ALWAYS = false;
180 |       @Comment(@CommentValue("{0} - Original server brand (e.g. Paper)."))
181 |       public String IN_GAME_BRAND = "YourServer ({0})";
182 |     }
183 | 
184 |     @Comment(@CommentValue("Doesn't work with srv records."))
185 |     public static class HOSTNAMES_MANAGER {
186 | 
187 |       public boolean BLOCK_JOIN = false;
188 |       public boolean BLOCK_PING = false;
189 |       @Comment(@CommentValue("Connections IP logging."))
190 |       public boolean DEBUG = false;
191 |       @Comment(@CommentValue("For \"debug\" option."))
192 |       public boolean SHOW_BLOCKED_ONLY = false;
193 |       @Comment(@CommentValue("For \"block-joining\" option, set to \"\" to show the default reason."))
194 |       public String KICK_REASON = "&cPlease, don't connect to the direct ip!\nUse example.com";
195 |       public boolean WHITELIST = true;
196 |       @Comment(@CommentValue("IP Addresses starting with \"127.\" or equal to \"localhost\" will be blocked."))
197 |       public boolean BLOCK_LOCAL_ADDRESSES = false;
198 |       @Comment(@CommentValue("DoMaIn.net will be similar to domain.net."))
199 |       public boolean IGNORE_CASE = true;
200 |       public List<String> HOSTNAMES = List.of("your-domain.net", "your-domain.com");
201 |       @Comment(@CommentValue("List of IP addresses that will bypass this check."))
202 |       public List<String> IGNORED_IPS = List.of("79.555.*", "228.1337.*");
203 |     }
204 |   }
205 | }
206 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/VelocityTools.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools;
 19 | 
 20 | import com.google.inject.Inject;
 21 | import com.velocitypowered.api.command.Command;
 22 | import com.velocitypowered.api.command.CommandMeta;
 23 | import com.velocitypowered.api.event.Subscribe;
 24 | import com.velocitypowered.api.event.proxy.ProxyInitializeEvent;
 25 | import com.velocitypowered.api.plugin.Plugin;
 26 | import com.velocitypowered.api.plugin.PluginContainer;
 27 | import com.velocitypowered.api.plugin.annotation.DataDirectory;
 28 | import com.velocitypowered.api.proxy.ProxyServer;
 29 | import com.velocitypowered.proxy.plugin.virtual.VelocityVirtualPlugin;
 30 | import com.velocitypowered.proxy.protocol.StateRegistry;
 31 | import com.velocitypowered.proxy.util.ratelimit.Ratelimiter;
 32 | import com.velocitypowered.proxy.util.ratelimit.Ratelimiters;
 33 | import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 34 | import java.io.IOException;
 35 | import java.net.InetAddress;
 36 | import java.nio.file.Files;
 37 | import java.nio.file.Path;
 38 | import java.util.ArrayList;
 39 | import java.util.List;
 40 | import java.util.Objects;
 41 | import java.util.stream.Collectors;
 42 | import net.elytrium.commons.kyori.serialization.Serializer;
 43 | import net.elytrium.commons.kyori.serialization.Serializers;
 44 | import net.elytrium.commons.utils.updates.UpdatesChecker;
 45 | import net.elytrium.fastprepare.PreparedPacket;
 46 | import net.elytrium.fastprepare.PreparedPacketFactory;
 47 | import net.elytrium.velocitytools.commands.AlertCommand;
 48 | import net.elytrium.velocitytools.commands.FindCommand;
 49 | import net.elytrium.velocitytools.commands.HubCommand;
 50 | import net.elytrium.velocitytools.commands.SendCommand;
 51 | import net.elytrium.velocitytools.commands.VelocityToolsCommand;
 52 | import net.elytrium.velocitytools.hooks.HandshakeHook;
 53 | import net.elytrium.velocitytools.hooks.HooksInitializer;
 54 | import net.elytrium.velocitytools.listeners.BrandChangerPingListener;
 55 | import net.elytrium.velocitytools.listeners.ProtocolBlockerJoinListener;
 56 | import net.elytrium.velocitytools.listeners.ProtocolBlockerPingListener;
 57 | import net.kyori.adventure.text.Component;
 58 | import net.kyori.adventure.text.serializer.ComponentSerializer;
 59 | import org.bstats.velocity.Metrics;
 60 | import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 61 | import org.slf4j.Logger;
 62 | 
 63 | @Plugin(
 64 |     id = "velocity-tools",
 65 |     name = "VelocityTools",
 66 |     version = BuildConfig.VERSION,
 67 |     url = "https://elytrium.net/",
 68 |     authors = {
 69 |         "Elytrium (https://elytrium.net/)",
 70 |     }
 71 | )
 72 | public class VelocityTools {
 73 | 
 74 |   @MonotonicNonNull
 75 |   private static Logger LOGGER;
 76 |   @MonotonicNonNull
 77 |   private static Serializer SERIALIZER;
 78 |   @MonotonicNonNull
 79 |   private static Ratelimiter<InetAddress> RATELIMITER;
 80 | 
 81 |   private final ProxyServer server;
 82 |   private final Path dataDirectory;
 83 |   private final Metrics.Factory metricsFactory;
 84 |   private final PreparedPacketFactory packetFactory;
 85 | 
 86 |   @Inject
 87 |   @SuppressFBWarnings("NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE")
 88 |   public VelocityTools(ProxyServer server, @DataDirectory Path dataDirectory, Logger logger, Metrics.Factory metricsFactory) {
 89 |     setLogger(logger);
 90 | 
 91 |     this.server = server;
 92 |     this.dataDirectory = dataDirectory;
 93 |     this.metricsFactory = metricsFactory;
 94 | 
 95 |     // Pre 1.2.0 migration.
 96 |     Path oldDataDirectory;
 97 |     if (Files.notExists(dataDirectory) && Files.exists(oldDataDirectory = dataDirectory.getParent().resolve("velocity_tools"))) {
 98 |       try {
 99 |         Files.move(oldDataDirectory, dataDirectory);
100 |       } catch (IOException e) {
101 |         logger.error("Failed to migrate data from pre-1.2.0", e);
102 |       }
103 |     }
104 | 
105 |     Settings.IMP.reload(this.dataDirectory.resolve("config.yml"));
106 |     this.packetFactory = new PreparedPacketFactory(
107 |         PreparedPacket::new,
108 |         StateRegistry.LOGIN,
109 |         false,
110 |         1,
111 |         1,
112 |         Settings.IMP.MAIN.SAVE_UNCOMPRESSED_PACKETS,
113 |         true
114 |     );
115 | 
116 |     try {
117 |       Class.forName("com.velocitypowered.proxy.connection.client.LoginInboundConnection");
118 |     } catch (ClassNotFoundException e) {
119 |       LOGGER.error("Please update your Velocity binary to 3.1.0+ version", e);
120 |       this.server.shutdown();
121 |     }
122 |   }
123 | 
124 |   @Subscribe
125 |   public void onProxyInitialization(ProxyInitializeEvent event) {
126 |     this.reload();
127 | 
128 |     HooksInitializer.init(this.server);
129 | 
130 |     if (Settings.IMP.MAIN.CHECK_FOR_UPDATES) {
131 |       this.server.getScheduler().buildTask(this, () -> {
132 |         if (!UpdatesChecker.checkVersionByURL("https://raw.githubusercontent.com/Elytrium/VelocityTools/master/VERSION", Settings.IMP.VERSION)) {
133 |           LOGGER.error("****************************************");
134 |           LOGGER.warn("The new VelocityTools update was found, please update.");
135 |           LOGGER.error("https://github.com/Elytrium/VelocityTools/releases/");
136 |           LOGGER.error("****************************************");
137 |         }
138 |       }).schedule();
139 |     }
140 |     this.metricsFactory.make(this, 12708);
141 |   }
142 | 
143 |   @SuppressFBWarnings(value = "NP_NULL_ON_SOME_PATH", justification = "LEGACY_AMPERSAND can't be null in velocity.")
144 |   public void reload() {
145 |     // Unregister previously registered commands.
146 |     this.unregisterCommands();
147 | 
148 |     Settings.IMP.reload(this.dataDirectory.resolve("config.yml"));
149 | 
150 |     ComponentSerializer<Component, Component, String> serializer = Settings.IMP.SERIALIZER.getSerializer();
151 |     if (serializer == null) {
152 |       LOGGER.warn("The specified serializer could not be founded, using default. (LEGACY_AMPERSAND)");
153 |       setSerializer(new Serializer(Objects.requireNonNull(Serializers.LEGACY_AMPERSAND.getSerializer())));
154 |     } else {
155 |       setSerializer(new Serializer(serializer));
156 |     }
157 | 
158 |     setRatelimiter(Ratelimiters.createWithMilliseconds(Settings.IMP.COMMANDS.RATELIMIT_DELAY));
159 |     this.unregisterCommands();
160 | 
161 |     List<String> aliases = Settings.IMP.COMMANDS.HUB.ALIASES;
162 |     if (Settings.IMP.COMMANDS.HUB.ENABLED && !aliases.isEmpty()) {
163 |       this.registerCommand(aliases.get(0), new HubCommand(this.server), aliases.toArray(new String[0]));
164 |     }
165 | 
166 |     if (Settings.IMP.COMMANDS.ALERT.ENABLED) {
167 |       this.registerCommand("alert", new AlertCommand(this.server));
168 |     }
169 | 
170 |     if (Settings.IMP.COMMANDS.FIND.ENABLED) {
171 |       this.registerCommand("find", new FindCommand(this.server));
172 |     }
173 | 
174 |     if (Settings.IMP.COMMANDS.SEND.ENABLED) {
175 |       this.registerCommand("send", new SendCommand(this.server));
176 |     }
177 | 
178 |     this.registerCommand("velocitytools", new VelocityToolsCommand(this), "vtools");
179 | 
180 |     this.server.getEventManager().unregisterListeners(this);
181 | 
182 |     if (Settings.IMP.TOOLS.BRAND_CHANGER.REWRITE_IN_PING) {
183 |       this.server.getEventManager().register(this, new BrandChangerPingListener());
184 |     }
185 | 
186 |     if (Settings.IMP.TOOLS.PROTOCOL_BLOCKER.BLOCK_PING) {
187 |       this.server.getEventManager().register(this, new ProtocolBlockerPingListener());
188 |     }
189 | 
190 |     if (Settings.IMP.TOOLS.PROTOCOL_BLOCKER.BLOCK_JOIN) {
191 |       this.server.getEventManager().register(this, new ProtocolBlockerJoinListener());
192 |     }
193 | 
194 |     HandshakeHook.reload(this.packetFactory);
195 |   }
196 | 
197 |   private void registerCommand(String alias, Command command, String... otherAliases) {
198 |     List<CommandMeta> unregisteredCommands = new ArrayList<>();
199 | 
200 |     CommandMeta meta = this.server.getCommandManager().getCommandMeta(alias);
201 |     if (meta != null) {
202 |       unregisteredCommands.add(meta);
203 |       this.server.getCommandManager().unregister(alias);
204 |     }
205 | 
206 |     for (String otherAlias : otherAliases) {
207 |       meta = this.server.getCommandManager().getCommandMeta(otherAlias);
208 |       if (meta != null) {
209 |         unregisteredCommands.add(meta);
210 |         this.server.getCommandManager().unregister(otherAlias);
211 |       }
212 |     }
213 | 
214 |     if (!unregisteredCommands.isEmpty()) {
215 |       getLogger().warn("Unregistered command(s) from other plugin(s): {}", unregisteredCommands.stream().map(commandMeta -> {
216 |         String pluginName = "unknown";
217 |         Object plugin = commandMeta.getPlugin();
218 |         if (plugin instanceof VelocityVirtualPlugin) {
219 |           pluginName = "Velocity";
220 |         } else if (plugin != null) {
221 |           PluginContainer container = this.server.getPluginManager().fromInstance(plugin).orElse(null);
222 |           if (container != null && container.getDescription() != null) {
223 |             pluginName = container.getDescription().getName().orElse(plugin.toString());
224 |           }
225 |         }
226 | 
227 |         return String.join(", ", commandMeta.getAliases()) + " from " + pluginName;
228 |       }).collect(Collectors.joining(", ")));
229 |     }
230 | 
231 |     this.server.getCommandManager().register(this.server.getCommandManager().metaBuilder(alias).plugin(this).aliases(otherAliases).build(), command);
232 |   }
233 | 
234 |   private void unregisterCommands() {
235 |     List<String> aliases = Settings.IMP.COMMANDS.HUB.ALIASES;
236 |     if (aliases != null) {
237 |       aliases.forEach(this::unregisterCommand);
238 |     }
239 |     this.unregisterCommand("alert");
240 |     this.unregisterCommand("find");
241 |     this.unregisterCommand("send");
242 |     this.unregisterCommand("velocitytools");
243 |   }
244 |   
245 |   private void unregisterCommand(String command) {
246 |     CommandMeta meta = this.server.getCommandManager().getCommandMeta(command);
247 |     if (meta != null && meta.getPlugin() == this) {
248 |       this.server.getCommandManager().unregister(meta);
249 |     }
250 |   }
251 | 
252 |   private static void setLogger(Logger logger) {
253 |     LOGGER = logger;
254 |   }
255 | 
256 |   private static void setSerializer(Serializer serializer) {
257 |     SERIALIZER = serializer;
258 |   }
259 | 
260 |   private static void setRatelimiter(Ratelimiter<InetAddress> ratelimiter) {
261 |     RATELIMITER = ratelimiter;
262 |   }
263 | 
264 |   public static Logger getLogger() {
265 |     return LOGGER;
266 |   }
267 | 
268 |   public static Serializer getSerializer() {
269 |     return SERIALIZER;
270 |   }
271 | 
272 |   public static Ratelimiter<InetAddress> getRatelimiter() {
273 |     return RATELIMITER;
274 |   }
275 | }
276 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/commands/AlertCommand.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.commands;
19 | 
20 | import com.velocitypowered.api.command.CommandSource;
21 | import com.velocitypowered.api.command.SimpleCommand;
22 | import com.velocitypowered.api.proxy.Player;
23 | import com.velocitypowered.api.proxy.ProxyServer;
24 | import java.text.MessageFormat;
25 | import net.elytrium.velocitytools.Settings;
26 | import net.elytrium.velocitytools.VelocityTools;
27 | import net.kyori.adventure.text.Component;
28 | 
29 | public class AlertCommand implements SimpleCommand {
30 | 
31 |   private final ProxyServer server;
32 |   private final Component messageNeeded;
33 |   private final String prefix;
34 |   private final Component emptyProxy;
35 | 
36 |   public AlertCommand(ProxyServer server) {
37 |     this.server = server;
38 |     this.messageNeeded = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.ALERT.MESSAGE_NEEDED);
39 |     this.prefix = Settings.IMP.COMMANDS.ALERT.PREFIX;
40 |     this.emptyProxy = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.ALERT.EMPTY_PROXY);
41 |   }
42 | 
43 |   @Override
44 |   public void execute(SimpleCommand.Invocation invocation) {
45 |     CommandSource source = invocation.source();
46 |     String[] args = invocation.arguments();
47 | 
48 |     if (args.length == 0) {
49 |       source.sendMessage(this.messageNeeded);
50 |     } else {
51 |       Component component = VelocityTools.getSerializer().deserialize(MessageFormat.format(this.prefix, String.join(" ", args)));
52 |       if (this.server.getAllPlayers().size() < 1) {
53 |         source.sendMessage(this.emptyProxy);
54 |       } else {
55 |         if (!(source instanceof Player)) {
56 |           source.sendMessage(component);
57 |         }
58 | 
59 |         this.server.getAllPlayers().forEach(player -> player.sendMessage(component));
60 |       }
61 |     }
62 |   }
63 | 
64 |   @Override
65 |   public boolean hasPermission(SimpleCommand.Invocation invocation) {
66 |     return invocation.source().hasPermission("velocitytools.command.alert");
67 |   }
68 | }
69 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/commands/FindCommand.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.commands;
19 | 
20 | import com.google.common.collect.ImmutableList;
21 | import com.velocitypowered.api.command.CommandSource;
22 | import com.velocitypowered.api.command.SimpleCommand;
23 | import com.velocitypowered.api.proxy.Player;
24 | import com.velocitypowered.api.proxy.ProxyServer;
25 | import com.velocitypowered.api.proxy.ServerConnection;
26 | import java.text.MessageFormat;
27 | import java.util.List;
28 | import java.util.Optional;
29 | import java.util.stream.Collectors;
30 | import net.elytrium.velocitytools.Settings;
31 | import net.elytrium.velocitytools.VelocityTools;
32 | import net.kyori.adventure.text.Component;
33 | 
34 | public class FindCommand implements SimpleCommand {
35 | 
36 |   private final ProxyServer server;
37 |   private final Component usernameNeeded;
38 |   private final String playerOnlineAt;
39 | 
40 |   public FindCommand(ProxyServer server) {
41 |     this.server = server;
42 |     this.usernameNeeded = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.FIND.USERNAME_NEEDED);
43 |     this.playerOnlineAt = Settings.IMP.COMMANDS.FIND.PLAYER_ONLINE_AT;
44 |   }
45 | 
46 |   @Override
47 |   public List<String> suggest(SimpleCommand.Invocation invocation) {
48 |     String[] args = invocation.arguments();
49 | 
50 |     if (args.length == 0) {
51 |       return this.server.getAllPlayers().stream()
52 |           .map(Player::getUsername)
53 |           .collect(Collectors.toList());
54 |     } else if (args.length == 1) {
55 |       return this.server.getAllPlayers().stream()
56 |           .map(Player::getUsername)
57 |           .filter(name -> name.regionMatches(true, 0, args[0], 0, args[0].length()))
58 |           .collect(Collectors.toList());
59 |     } else {
60 |       return ImmutableList.of();
61 |     }
62 |   }
63 | 
64 |   @Override
65 |   public void execute(SimpleCommand.Invocation invocation) {
66 |     CommandSource source = invocation.source();
67 |     String[] args = invocation.arguments();
68 | 
69 |     if (args.length == 0) {
70 |       source.sendMessage(this.usernameNeeded);
71 |     } else {
72 |       Optional<Player> player = this.server.getPlayer(args[0]);
73 |       if (player.isPresent()) {
74 |         Player player0 = player.get();
75 |         Optional<ServerConnection> server = player0.getCurrentServer();
76 |         server.ifPresent(srv ->
77 |             source.sendMessage(
78 |                 VelocityTools.getSerializer().deserialize(
79 |                     MessageFormat.format(this.playerOnlineAt, player0.getUsername(), srv.getServerInfo().getName())
80 |                 )
81 |             )
82 |         );
83 |       } else {
84 |         source.sendMessage(
85 |             VelocityTools.getSerializer().deserialize(MessageFormat.format(Settings.IMP.COMMANDS.FIND.PLAYER_NOT_ONLINE, args[0]))
86 |         );
87 |       }
88 |     }
89 |   }
90 | 
91 |   @Override
92 |   public boolean hasPermission(SimpleCommand.Invocation invocation) {
93 |     return invocation.source().hasPermission("velocitytools.command.find");
94 |   }
95 | }
96 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/commands/HubCommand.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.commands;
19 | 
20 | import com.velocitypowered.api.command.CommandSource;
21 | import com.velocitypowered.api.command.SimpleCommand;
22 | import com.velocitypowered.api.proxy.Player;
23 | import com.velocitypowered.api.proxy.ProxyServer;
24 | import com.velocitypowered.api.proxy.server.RegisteredServer;
25 | import com.velocitypowered.proxy.command.builtin.CommandMessages;
26 | import java.util.List;
27 | import net.elytrium.velocitytools.Settings;
28 | import net.elytrium.velocitytools.VelocityTools;
29 | import net.kyori.adventure.text.Component;
30 | 
31 | public class HubCommand extends RatelimitedCommand {
32 | 
33 |   private final ProxyServer server;
34 |   private final List<String> servers;
35 |   private int serversCounter;
36 |   private final Component disabledServer;
37 |   private final List<String> disabledServers;
38 |   private final String youGotMoved;
39 |   private final Component youGotMovedComponent;
40 | 
41 |   public HubCommand(ProxyServer server) {
42 |     this.server = server;
43 |     this.servers = Settings.IMP.COMMANDS.HUB.SERVERS;
44 |     this.serversCounter = this.servers.size();
45 |     this.disabledServers = Settings.IMP.COMMANDS.HUB.DISABLED_SERVERS;
46 |     this.disabledServer = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.HUB.DISABLED_SERVER);
47 |     this.youGotMoved = Settings.IMP.COMMANDS.HUB.YOU_GOT_MOVED;
48 |     this.youGotMovedComponent = VelocityTools.getSerializer().deserialize(this.youGotMoved);
49 |   }
50 | 
51 |   @Override
52 |   protected void execute(CommandSource source, String[] args) {
53 |     if (!(source instanceof Player player)) {
54 |       source.sendMessage(CommandMessages.PLAYERS_ONLY);
55 |       return;
56 |     }
57 | 
58 |     String serverName;
59 |     int serversSize = this.servers.size();
60 |     if (serversSize > 1) {
61 |       if (++this.serversCounter >= serversSize) {
62 |         this.serversCounter = 0;
63 |       }
64 | 
65 |       serverName = this.servers.get(this.serversCounter);
66 |     } else {
67 |       serverName = this.servers.get(0);
68 |     }
69 |     RegisteredServer toConnect = this.server.getServer(serverName).orElse(null);
70 |     if (toConnect == null) {
71 |       source.sendMessage(CommandMessages.SERVER_DOES_NOT_EXIST.args(Component.text(serverName)));
72 |       return;
73 |     }
74 | 
75 |     player.getCurrentServer().ifPresent(serverConnection -> {
76 |       String servername = serverConnection.getServer().getServerInfo().getName();
77 | 
78 |       if (this.disabledServers.stream().anyMatch(servername::equals) && !player.hasPermission("velocitytools.command.hub.bypass." + servername)) {
79 |         player.sendMessage(this.disabledServer);
80 |       } else {
81 |         player.createConnectionRequest(toConnect).connectWithIndication()
82 |             .thenAccept(isSuccessful -> {
83 |               if (isSuccessful && !this.youGotMoved.isEmpty()) {
84 |                 player.sendMessage(this.youGotMovedComponent);
85 |               }
86 |             });
87 |       }
88 |     });
89 |   }
90 | 
91 |   @Override
92 |   public boolean hasPermission(SimpleCommand.Invocation invocation) {
93 |     return invocation.source().hasPermission("velocitytools.command.hub");
94 |   }
95 | }
96 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/commands/RatelimitedCommand.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.commands;
19 | 
20 | import com.velocitypowered.api.command.CommandSource;
21 | import com.velocitypowered.api.command.SimpleCommand;
22 | import com.velocitypowered.api.proxy.Player;
23 | import net.elytrium.velocitytools.Settings;
24 | import net.elytrium.velocitytools.VelocityTools;
25 | import net.kyori.adventure.text.Component;
26 | 
27 | public abstract class RatelimitedCommand implements SimpleCommand {
28 | 
29 |   private final Component ratelimited;
30 | 
31 |   public RatelimitedCommand() {
32 |     this.ratelimited = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.RATELIMITED);
33 |   }
34 | 
35 |   @Override
36 |   public final void execute(SimpleCommand.Invocation invocation) {
37 |     CommandSource source = invocation.source();
38 |     if (source instanceof Player player && !VelocityTools.getRatelimiter().attempt(player.getRemoteAddress().getAddress())) {
39 |       source.sendMessage(this.ratelimited);
40 |       return;
41 |     }
42 | 
43 |     this.execute(source, invocation.arguments());
44 |   }
45 | 
46 |   protected abstract void execute(CommandSource source, String[] args);
47 | }
48 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/commands/SendCommand.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools.commands;
 19 | 
 20 | import com.google.common.collect.ImmutableList;
 21 | import com.velocitypowered.api.command.CommandSource;
 22 | import com.velocitypowered.api.command.SimpleCommand;
 23 | import com.velocitypowered.api.proxy.Player;
 24 | import com.velocitypowered.api.proxy.ProxyServer;
 25 | import com.velocitypowered.api.proxy.ServerConnection;
 26 | import com.velocitypowered.api.proxy.server.RegisteredServer;
 27 | import com.velocitypowered.api.proxy.server.ServerInfo;
 28 | import com.velocitypowered.proxy.command.builtin.CommandMessages;
 29 | import java.text.MessageFormat;
 30 | import java.util.Collection;
 31 | import java.util.List;
 32 | import java.util.Locale;
 33 | import java.util.Optional;
 34 | import java.util.stream.Collectors;
 35 | import net.elytrium.velocitytools.Settings;
 36 | import net.elytrium.velocitytools.VelocityTools;
 37 | import net.kyori.adventure.text.Component;
 38 | 
 39 | public class SendCommand implements SimpleCommand {
 40 | 
 41 |   private final ProxyServer server;
 42 |   private final Component notEnoughArguments;
 43 |   private final String youGotSummoned;
 44 |   private final String console;
 45 |   private final String playerNotOnline;
 46 |   private final String callback;
 47 |   private final Component notOnServer;
 48 | 
 49 |   public SendCommand(ProxyServer server) {
 50 |     this.server = server;
 51 |     this.notEnoughArguments = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.SEND.NOT_ENOUGH_ARGUMENTS);
 52 |     this.youGotSummoned = Settings.IMP.COMMANDS.SEND.YOU_GOT_SUMMONED;
 53 |     this.console = Settings.IMP.COMMANDS.SEND.CONSOLE;
 54 |     this.playerNotOnline = Settings.IMP.COMMANDS.SEND.PLAYER_NOT_ONLINE;
 55 |     this.callback = Settings.IMP.COMMANDS.SEND.CALLBACK;
 56 |     this.notOnServer = VelocityTools.getSerializer().deserialize(Settings.IMP.COMMANDS.SEND.NOT_ON_SERVER);
 57 |   }
 58 | 
 59 |   @Override
 60 |   public List<String> suggest(SimpleCommand.Invocation invocation) {
 61 |     String[] args = invocation.arguments();
 62 | 
 63 |     if (args.length < 2) {
 64 |       List<String> players = this.server.getAllPlayers().stream()
 65 |           .map(Player::getUsername)
 66 |           .collect(Collectors.toList());
 67 | 
 68 |       List<String> serversNames = this.server.getAllServers().stream()
 69 |           .map(RegisteredServer::getServerInfo)
 70 |           .map(ServerInfo::getName)
 71 |           .collect(Collectors.toList());
 72 |       serversNames.add("ALL");
 73 |       serversNames.add("CURRENT");
 74 | 
 75 |       players.addAll(serversNames);
 76 | 
 77 |       if (args.length == 0) {
 78 |         return players;
 79 |       } else {
 80 |         return players.stream()
 81 |             .filter(name -> name.regionMatches(true, 0, args[0], 0, args[0].length()))
 82 |             .collect(Collectors.toList());
 83 |       }
 84 |     } else if (args.length == 2) {
 85 |       return this.server.getAllServers().stream()
 86 |           .map(RegisteredServer::getServerInfo)
 87 |           .map(ServerInfo::getName)
 88 |           .filter(name -> name.regionMatches(true, 0, args[1], 0, args[1].length()))
 89 |           .collect(Collectors.toList());
 90 |     } else {
 91 |       return ImmutableList.of();
 92 |     }
 93 |   }
 94 | 
 95 |   @Override
 96 |   public void execute(SimpleCommand.Invocation invocation) {
 97 |     CommandSource source = invocation.source();
 98 |     String[] args = invocation.arguments();
 99 | 
100 |     if (args.length != 2) {
101 |       source.sendMessage(this.notEnoughArguments);
102 |       return;
103 |     }
104 | 
105 |     RegisteredServer target = this.server.getServer(args[1]).orElse(null);
106 |     if (target == null) {
107 |       source.sendMessage(CommandMessages.SERVER_DOES_NOT_EXIST.args(Component.text(args[1])));
108 |       return;
109 |     }
110 | 
111 |     Component summoned = VelocityTools.getSerializer().deserialize(MessageFormat.format(
112 |         this.youGotSummoned,
113 |         target.getServerInfo().getName(),
114 |         ((source instanceof Player) ? ((Player) source).getUsername() : this.console)
115 |     ));
116 | 
117 |     int playersToProccess;
118 |     switch (args[0].toLowerCase(Locale.ROOT)) {
119 |       case "all" -> {
120 |         Collection<Player> players = this.server.getAllPlayers();
121 |         playersToProccess = players.size();
122 |         players.forEach(player -> player.createConnectionRequest(target).connectWithIndication().thenAccept(isSuccessful -> {
123 |           if (isSuccessful && !this.youGotSummoned.isEmpty()) {
124 |             player.sendMessage(summoned);
125 |           }
126 |         }));
127 |       }
128 |       case "current" -> {
129 |         if (source instanceof Player player) {
130 |           Optional<ServerConnection> currentServer = player.getCurrentServer();
131 |           if (currentServer.isPresent()) {
132 |             Collection<Player> players = currentServer.get().getServer().getPlayersConnected();
133 |             playersToProccess = players.size();
134 |             players.forEach(next -> next.createConnectionRequest(target).connectWithIndication().thenAccept(isSuccessful -> {
135 |               if (isSuccessful && !this.youGotSummoned.isEmpty()) {
136 |                 next.sendMessage(summoned);
137 |               }
138 |             }));
139 |           } else {
140 |             source.sendMessage(this.notOnServer);
141 |             return;
142 |           }
143 |         } else {
144 |           source.sendMessage(CommandMessages.PLAYERS_ONLY);
145 |           return;
146 |         }
147 |       }
148 |       default -> {
149 |         RegisteredServer server = this.server.getServer(args[0]).orElse(null);
150 |         if (server == null) {
151 |           Player player = this.server.getPlayer(args[0]).orElse(null);
152 |           if (player == null) {
153 |             source.sendMessage(VelocityTools.getSerializer().deserialize(MessageFormat.format(this.playerNotOnline, args[0])));
154 |             return;
155 |           } else {
156 |             playersToProccess = 1;
157 |             player.createConnectionRequest(target).connectWithIndication().thenAccept(isSuccessful -> {
158 |               if (isSuccessful && !this.youGotSummoned.isEmpty()) {
159 |                 player.sendMessage(summoned);
160 |               }
161 |             });
162 |           }
163 |         } else {
164 |           Collection<Player> players = server.getPlayersConnected();
165 |           playersToProccess = players.size();
166 |           players.forEach(player -> player.createConnectionRequest(target).connectWithIndication().thenAccept(isSuccessful -> {
167 |             if (isSuccessful && !this.youGotSummoned.isEmpty()) {
168 |               player.sendMessage(summoned);
169 |             }
170 |           }));
171 |         }
172 |       }
173 |     }
174 | 
175 |     source.sendMessage(VelocityTools.getSerializer().deserialize(MessageFormat.format(
176 |         this.callback,
177 |         playersToProccess,
178 |         target.getServerInfo().getName()
179 |     )));
180 |   }
181 | 
182 |   @Override
183 |   public boolean hasPermission(SimpleCommand.Invocation invocation) {
184 |     return invocation.source().hasPermission("velocitytools.command.send");
185 |   }
186 | }
187 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/commands/VelocityToolsCommand.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools.commands;
 19 | 
 20 | import com.google.common.collect.ImmutableList;
 21 | import com.velocitypowered.api.command.CommandSource;
 22 | import com.velocitypowered.api.command.SimpleCommand;
 23 | import java.util.Arrays;
 24 | import java.util.List;
 25 | import java.util.Locale;
 26 | import java.util.stream.Collectors;
 27 | import net.elytrium.velocitytools.VelocityTools;
 28 | import net.kyori.adventure.text.Component;
 29 | import net.kyori.adventure.text.format.NamedTextColor;
 30 | 
 31 | public class VelocityToolsCommand implements SimpleCommand {
 32 | 
 33 |   private static final List<Component> HELP_MESSAGE = List.of(
 34 |       Component.text("This server is using VelocityTools.", NamedTextColor.YELLOW),
 35 |       Component.text("(C) 2021 - 2025 Elytrium", NamedTextColor.YELLOW),
 36 |       Component.text("https://elytrium.net/github/", NamedTextColor.GREEN),
 37 |       Component.empty()
 38 |   );
 39 | 
 40 |   private static final Component AVAILABLE_SUBCOMMANDS_MESSAGE = Component.text("Available subcommands:", NamedTextColor.WHITE);
 41 |   private static final Component NO_AVAILABLE_SUBCOMMANDS_MESSAGE = Component.text("There is no available subcommands for you.", NamedTextColor.WHITE);
 42 | 
 43 | 
 44 |   public final VelocityTools plugin;
 45 | 
 46 |   public VelocityToolsCommand(VelocityTools plugin) {
 47 |     this.plugin = plugin;
 48 |   }
 49 | 
 50 |   @Override
 51 |   public List<String> suggest(SimpleCommand.Invocation invocation) {
 52 |     CommandSource source = invocation.source();
 53 |     String[] args = invocation.arguments();
 54 | 
 55 |     if (args.length == 0) {
 56 |       return Arrays.stream(Subcommand.values())
 57 |           .filter(command -> command.hasPermission(source))
 58 |           .map(Subcommand::getCommand)
 59 |           .collect(Collectors.toList());
 60 |     } else if (args.length == 1) {
 61 |       String argument = args[0];
 62 |       return Arrays.stream(Subcommand.values())
 63 |           .filter(command -> command.hasPermission(source))
 64 |           .map(Subcommand::getCommand)
 65 |           .filter(str -> str.regionMatches(true, 0, argument, 0, argument.length()))
 66 |           .collect(Collectors.toList());
 67 |     } else {
 68 |       return ImmutableList.of();
 69 |     }
 70 |   }
 71 | 
 72 |   @Override
 73 |   public void execute(SimpleCommand.Invocation invocation) {
 74 |     CommandSource source = invocation.source();
 75 |     String[] args = invocation.arguments();
 76 | 
 77 |     int argsAmount = args.length;
 78 |     if (argsAmount > 0) {
 79 |       try {
 80 |         Subcommand subcommand = Subcommand.valueOf(args[0].toUpperCase(Locale.ROOT));
 81 |         if (!subcommand.hasPermission(source)) {
 82 |           this.showHelp(source);
 83 |           return;
 84 |         }
 85 | 
 86 |         subcommand.executor.execute(this, source, args);
 87 |       } catch (IllegalArgumentException e) {
 88 |         this.showHelp(source);
 89 |       }
 90 |     } else {
 91 |       this.showHelp(source);
 92 |     }
 93 |   }
 94 | 
 95 |   private void showHelp(CommandSource source) {
 96 |     HELP_MESSAGE.forEach(source::sendMessage);
 97 | 
 98 |     List<Subcommand> availableSubcommands = Arrays.stream(Subcommand.values())
 99 |         .filter(command -> command.hasPermission(source))
100 |         .collect(Collectors.toList());
101 | 
102 |     if (availableSubcommands.size() > 0) {
103 |       source.sendMessage(AVAILABLE_SUBCOMMANDS_MESSAGE);
104 |       availableSubcommands.forEach(command -> source.sendMessage(command.getMessageLine()));
105 |     } else {
106 |       source.sendMessage(NO_AVAILABLE_SUBCOMMANDS_MESSAGE);
107 |     }
108 |   }
109 | 
110 |   private enum Subcommand {
111 |     RELOAD("Reload config.", (VelocityToolsCommand parent, CommandSource source, String[] args) -> {
112 |       parent.plugin.reload();
113 |       source.sendMessage(Component.text("§aСonfig reloaded successfully!"));
114 |     });
115 | 
116 |     private final String command;
117 |     private final String description;
118 |     private final SubcommandExecutor executor;
119 | 
120 |     Subcommand(String description, SubcommandExecutor executor) {
121 |       this.command = this.name().toLowerCase(Locale.ROOT);
122 |       this.description = description;
123 |       this.executor = executor;
124 |     }
125 | 
126 |     public boolean hasPermission(CommandSource source) {
127 |       return source.hasPermission("velocitytools.admin." + this.command);
128 |     }
129 | 
130 |     public Component getMessageLine() {
131 |       return Component.textOfChildren(
132 |           Component.text("  /velocitytools " + this.command, NamedTextColor.GREEN),
133 |           Component.text(" - ", NamedTextColor.DARK_GRAY),
134 |           Component.text(this.description, NamedTextColor.YELLOW)
135 |       );
136 |     }
137 | 
138 |     public String getCommand() {
139 |       return this.command;
140 |     }
141 |   }
142 | 
143 |   private interface SubcommandExecutor {
144 |     void execute(VelocityToolsCommand parent, CommandSource source, String[] args);
145 |   }
146 | }
147 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/handlers/HostnamesManagerHandler.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools.handlers;
 19 | 
 20 | import com.velocitypowered.proxy.connection.MinecraftConnection;
 21 | import com.velocitypowered.proxy.connection.MinecraftSessionHandler;
 22 | import com.velocitypowered.proxy.connection.client.HandshakeSessionHandler;
 23 | import com.velocitypowered.proxy.protocol.StateRegistry;
 24 | import java.lang.reflect.InvocationTargetException;
 25 | import java.lang.reflect.Method;
 26 | import java.net.InetSocketAddress;
 27 | import java.util.List;
 28 | import java.util.Locale;
 29 | import java.util.regex.Pattern;
 30 | import java.util.stream.Collectors;
 31 | import net.elytrium.commons.utils.reflection.ReflectionException;
 32 | import net.elytrium.velocitytools.Settings;
 33 | import net.elytrium.velocitytools.VelocityTools;
 34 | import net.elytrium.velocitytools.utils.WhitelistUtil;
 35 | 
 36 | public class HostnamesManagerHandler {
 37 | 
 38 | 
 39 |   private static Method cleanVhost;
 40 |   private final boolean ignoreCase;
 41 |   private final boolean blockPing;
 42 |   private final boolean blockJoin;
 43 |   private final boolean blockLocal;
 44 |   private final boolean whitelist;
 45 |   private final List<Pattern> hostnames;
 46 |   private final List<Pattern> whitelistedIps;
 47 |   private final boolean debug;
 48 |   private final boolean showBlockedOnly;
 49 | 
 50 |   public HostnamesManagerHandler() {
 51 |     this.ignoreCase = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.IGNORE_CASE;
 52 |     this.blockPing = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.BLOCK_PING;
 53 |     this.blockJoin = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.BLOCK_JOIN;
 54 |     this.blockLocal = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.BLOCK_LOCAL_ADDRESSES;
 55 |     this.whitelist = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.WHITELIST;
 56 |     this.hostnames = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.HOSTNAMES
 57 |         .stream()
 58 |         .map(object -> Pattern.compile("^" + object.replace(".", "\\.").replace("*", ".*") + "$"))
 59 |         .collect(Collectors.toList());
 60 |     this.whitelistedIps = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.IGNORED_IPS
 61 |         .stream()
 62 |         .map(object -> Pattern.compile("^" + object.replace(".", "\\.").replace("*", ".*") + "$"))
 63 |         .collect(Collectors.toList());
 64 |     this.debug = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.DEBUG;
 65 |     this.showBlockedOnly = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.SHOW_BLOCKED_ONLY;
 66 |   }
 67 | 
 68 |   public boolean checkAddress(StateRegistry type, MinecraftConnection connection, MinecraftSessionHandler handler,
 69 |                               String initialServerAddress) throws IllegalAccessException, InvocationTargetException {
 70 |     String log;
 71 | 
 72 |     switch (type) {
 73 |       case STATUS: {
 74 |         if (this.blockPing) {
 75 |           log = "{} is pinging the server using: {}";
 76 |         } else {
 77 |           return false;
 78 |         }
 79 |         break;
 80 |       }
 81 |       case LOGIN: {
 82 |         if (this.blockJoin) {
 83 |           log = "{} is joining the server using: {}";
 84 |         } else {
 85 |           return false;
 86 |         }
 87 |         break;
 88 |       }
 89 |       default: {
 90 |         throw new IllegalStateException("Unexpected value: " + type);
 91 |       }
 92 |     }
 93 | 
 94 |     InetSocketAddress remoteAddress = (InetSocketAddress) connection.getRemoteAddress();
 95 | 
 96 |     String originalServerAddress = (String) cleanVhost.invoke(handler, initialServerAddress);
 97 |     String serverAddress;
 98 |     if (this.ignoreCase) {
 99 |       serverAddress = originalServerAddress.toLowerCase(Locale.ROOT);
100 |     } else {
101 |       serverAddress = originalServerAddress;
102 |     }
103 | 
104 |     if ((this.blockLocal && (originalServerAddress.startsWith("127.") || originalServerAddress.equalsIgnoreCase("localhost")))
105 |         || (WhitelistUtil.checkForWhitelist(this.whitelist, this.hostnames.stream().anyMatch(pattern -> pattern.matcher(serverAddress).matches()))
106 |         && this.whitelistedIps.stream().noneMatch(pattern -> pattern.matcher(remoteAddress.getAddress().getHostAddress()).matches()))) {
107 |       this.debugInfo(log + " §c(blocked)", remoteAddress, originalServerAddress, true);
108 |       return true;
109 |     } else {
110 |       this.debugInfo(log, remoteAddress, originalServerAddress, false);
111 |       return false;
112 |     }
113 |   }
114 | 
115 |   private void debugInfo(String msg, InetSocketAddress remoteAddress, String hostname, boolean blocked) {
116 |     if (this.debug) {
117 |       if (this.showBlockedOnly && !blocked) {
118 |         return;
119 |       }
120 | 
121 |       VelocityTools.getLogger().info(msg, remoteAddress, hostname);
122 |     }
123 |   }
124 | 
125 |   private static void init() {
126 |     try {
127 |       cleanVhost = HandshakeSessionHandler.class.getDeclaredMethod("cleanVhost", String.class);
128 |       cleanVhost.setAccessible(true);
129 |     } catch (NoSuchMethodException e) {
130 |       throw new ReflectionException(e);
131 |     }
132 |   }
133 | 
134 |   static {
135 |     init();
136 |   }
137 | }
138 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/hooks/ChannelInitializerHook.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.hooks;
19 | 
20 | import com.velocitypowered.proxy.network.Connections;
21 | import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
22 | import io.netty.channel.Channel;
23 | import io.netty.channel.ChannelInitializer;
24 | import io.netty.channel.ChannelPipeline;
25 | import java.lang.invoke.MethodHandle;
26 | import java.lang.invoke.MethodHandles;
27 | import java.lang.invoke.MethodType;
28 | import net.elytrium.velocitytools.Settings;
29 | import org.jetbrains.annotations.NotNull;
30 | 
31 | public class ChannelInitializerHook extends ChannelInitializer<Channel> {
32 | 
33 |   private static final MethodHandle MH_initChannel;
34 | 
35 |   private final ChannelInitializer<Channel> originalInitializer;
36 | 
37 |   @SuppressFBWarnings("EI_EXPOSE_REP2")
38 |   public ChannelInitializerHook(ChannelInitializer<Channel> originalInitializer) {
39 |     this.originalInitializer = originalInitializer;
40 |   }
41 | 
42 |   @Override
43 |   protected void initChannel(@NotNull Channel channel) throws Exception {
44 |     try {
45 |       MH_initChannel.invokeExact(this.originalInitializer, channel);
46 |     } catch (Throwable e) {
47 |       throw new Exception("failed to initialize channel", e);
48 |     }
49 |     ChannelPipeline pipeline = channel.pipeline();
50 |     if (Settings.IMP.TOOLS.DISABLE_LEGACY_PING && pipeline.names().contains(Connections.LEGACY_PING_DECODER)) {
51 |       pipeline.remove(Connections.LEGACY_PING_DECODER);
52 |     }
53 |   }
54 | 
55 |   static {
56 |     try {
57 |       MH_initChannel = MethodHandles.privateLookupIn(ChannelInitializer.class, MethodHandles.lookup())
58 |           .findVirtual(ChannelInitializer.class, "initChannel", MethodType.methodType(void.class, Channel.class));
59 |     } catch (Throwable e) {
60 |       throw new ExceptionInInitializerError(e);
61 |     }
62 |   }
63 | }
64 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/hooks/HandshakeHook.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools.hooks;
 19 | 
 20 | import com.velocitypowered.api.network.ProtocolVersion;
 21 | import com.velocitypowered.proxy.connection.MinecraftConnection;
 22 | import com.velocitypowered.proxy.connection.MinecraftSessionHandler;
 23 | import com.velocitypowered.proxy.connection.client.HandshakeSessionHandler;
 24 | import com.velocitypowered.proxy.network.Connections;
 25 | import com.velocitypowered.proxy.protocol.MinecraftPacket;
 26 | import com.velocitypowered.proxy.protocol.StateRegistry;
 27 | import com.velocitypowered.proxy.protocol.packet.DisconnectPacket;
 28 | import com.velocitypowered.proxy.protocol.packet.HandshakePacket;
 29 | import java.lang.reflect.Field;
 30 | import java.lang.reflect.InvocationTargetException;
 31 | import java.lang.reflect.Method;
 32 | import java.util.function.Supplier;
 33 | import net.elytrium.commons.utils.reflection.ReflectionException;
 34 | import net.elytrium.fastprepare.PreparedPacket;
 35 | import net.elytrium.fastprepare.PreparedPacketFactory;
 36 | import net.elytrium.velocitytools.Settings;
 37 | import net.elytrium.velocitytools.VelocityTools;
 38 | import net.elytrium.velocitytools.handlers.HostnamesManagerHandler;
 39 | import net.kyori.adventure.text.Component;
 40 | 
 41 | public class HandshakeHook extends HandshakePacket implements PacketHook {
 42 | 
 43 |   private static Method GET_STATE_FOR_PROTOCOL;
 44 |   private static Field CONNECTION_FIELD;
 45 |   private static HostnamesManagerHandler HOSTNAMES_HANDLER;
 46 |   private static PreparedPacket DISCONNECT_PACKET;
 47 |   private static boolean DISABLE_INVALID_PROTOCOL;
 48 | 
 49 |   @Override
 50 |   public boolean handle(MinecraftSessionHandler handler) {
 51 |     try {
 52 |       int nextStatus = this.getNextStatus();
 53 |       if (DISABLE_INVALID_PROTOCOL && GET_STATE_FOR_PROTOCOL.invoke(handler, nextStatus) == null) {
 54 |         return true;
 55 |       }
 56 | 
 57 |       MinecraftConnection connection = (MinecraftConnection) CONNECTION_FIELD.get(handler);
 58 |       if (nextStatus == StateRegistry.STATUS_ID) {
 59 |         if (HOSTNAMES_HANDLER.checkAddress(StateRegistry.STATUS, connection, handler, this.getServerAddress())) {
 60 |           connection.close();
 61 |           return true;
 62 |         }
 63 |       } else if (nextStatus == StateRegistry.LOGIN_ID) {
 64 |         StateRegistry login = StateRegistry.LOGIN;
 65 |         if (HOSTNAMES_HANDLER.checkAddress(login, connection, handler, this.getServerAddress())) {
 66 |           connection.getChannel().pipeline().remove(Connections.FRAME_ENCODER);
 67 |           connection.closeWith(DISCONNECT_PACKET.getPackets(this.getProtocolVersion()));
 68 |           return true;
 69 |         }
 70 |       }
 71 |     } catch (IllegalAccessException | InvocationTargetException e) {
 72 |       throw new ReflectionException(e);
 73 |     }
 74 | 
 75 |     return super.handle(handler);
 76 |   }
 77 | 
 78 |   @Override
 79 |   public Supplier<MinecraftPacket> getHook() {
 80 |     return HandshakeHook::new;
 81 |   }
 82 | 
 83 |   @Override
 84 |   public Class<? extends MinecraftPacket> getType() {
 85 |     return HandshakePacket.class;
 86 |   }
 87 | 
 88 |   @Override
 89 |   public Class<? extends MinecraftPacket> getHookClass() {
 90 |     return this.getClass();
 91 |   }
 92 | 
 93 |   public static void reload(PreparedPacketFactory factory) {
 94 |     try {
 95 |       GET_STATE_FOR_PROTOCOL = HandshakeSessionHandler.class.getDeclaredMethod("getStateForProtocol", int.class);
 96 |       GET_STATE_FOR_PROTOCOL.setAccessible(true);
 97 | 
 98 |       CONNECTION_FIELD = HandshakeSessionHandler.class.getDeclaredField("connection");
 99 |       CONNECTION_FIELD.setAccessible(true);
100 | 
101 |       HOSTNAMES_HANDLER = new HostnamesManagerHandler();
102 | 
103 |       String kickReason = Settings.IMP.TOOLS.HOSTNAMES_MANAGER.KICK_REASON;
104 |       Component kickReasonComponent;
105 |       if (kickReason.isEmpty()) {
106 |         kickReasonComponent = Component.empty();
107 |       } else {
108 |         kickReasonComponent = VelocityTools.getSerializer().deserialize(kickReason);
109 |       }
110 | 
111 |       DISCONNECT_PACKET = factory
112 |           .createPreparedPacket(ProtocolVersion.MINIMUM_VERSION, ProtocolVersion.MAXIMUM_VERSION)
113 |           .prepare(version -> DisconnectPacket.create(kickReasonComponent, version, StateRegistry.PLAY));
114 | 
115 |       DISABLE_INVALID_PROTOCOL = Settings.IMP.TOOLS.DISABLE_INVALID_PROTOCOL;
116 |     } catch (NoSuchMethodException | NoSuchFieldException e) {
117 |       throw new ReflectionException(e);
118 |     }
119 |   }
120 | }
121 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/hooks/HooksInitializer.java:
--------------------------------------------------------------------------------
  1 | /*
  2 |  * Copyright (C) 2021 - 2025 Elytrium
  3 |  *
  4 |  * This program is free software: you can redistribute it and/or modify
  5 |  * it under the terms of the GNU Affero General Public License as published by
  6 |  * the Free Software Foundation, either version 3 of the License, or
  7 |  * (at your option) any later version.
  8 |  *
  9 |  * This program is distributed in the hope that it will be useful,
 10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 |  * GNU Affero General Public License for more details.
 13 |  *
 14 |  * You should have received a copy of the GNU Affero General Public License
 15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 16 |  */
 17 | 
 18 | package net.elytrium.velocitytools.hooks;
 19 | 
 20 | import com.velocitypowered.api.network.ProtocolVersion;
 21 | import com.velocitypowered.api.proxy.ProxyServer;
 22 | import com.velocitypowered.proxy.connection.backend.BackendPlaySessionHandler;
 23 | import com.velocitypowered.proxy.connection.backend.ConfigSessionHandler;
 24 | import com.velocitypowered.proxy.connection.backend.VelocityServerConnection;
 25 | import com.velocitypowered.proxy.network.ConnectionManager;
 26 | import com.velocitypowered.proxy.network.ServerChannelInitializerHolder;
 27 | import com.velocitypowered.proxy.protocol.MinecraftPacket;
 28 | import com.velocitypowered.proxy.protocol.StateRegistry;
 29 | import io.netty.channel.Channel;
 30 | import io.netty.channel.ChannelInitializer;
 31 | import io.netty.util.collection.IntObjectMap;
 32 | import it.unimi.dsi.fastutil.objects.Object2IntMap;
 33 | import java.lang.invoke.MethodHandle;
 34 | import java.lang.invoke.MethodHandles;
 35 | import java.lang.reflect.Field;
 36 | import java.util.ArrayList;
 37 | import java.util.List;
 38 | import java.util.Map;
 39 | import java.util.function.BiConsumer;
 40 | import java.util.function.Supplier;
 41 | import net.elytrium.commons.utils.reflection.ReflectionException;
 42 | 
 43 | /**
 44 |  * @author hevav
 45 |  */
 46 | public class HooksInitializer {
 47 | 
 48 |   @SuppressWarnings("unchecked")
 49 |   public static void init(ProxyServer server) {
 50 |     try {
 51 |       MethodHandle cm = MethodHandles.privateLookupIn(server.getClass(), MethodHandles.lookup())
 52 |           .findGetter(server.getClass(), "cm", ConnectionManager.class);
 53 | 
 54 |       ServerChannelInitializerHolder serverChannelInitializer = ((ConnectionManager) cm.invoke(server)).getServerChannelInitializer();
 55 |       Field initializerField = serverChannelInitializer.getClass().getDeclaredField("initializer");
 56 |       initializerField.setAccessible(true);
 57 |       ChannelInitializer<Channel> initializer = (ChannelInitializer<Channel>) initializerField.get(serverChannelInitializer);
 58 |       initializerField.set(serverChannelInitializer, new ChannelInitializerHook(initializer));
 59 | 
 60 |       PluginMessageHook.SERVER_CONNECTION_BACKEND_PLAY_FIELD = MethodHandles
 61 |           .privateLookupIn(BackendPlaySessionHandler.class, MethodHandles.lookup())
 62 |           .findGetter(BackendPlaySessionHandler.class, "serverConn", VelocityServerConnection.class);
 63 | 
 64 |       PluginMessageHook.SERVER_CONNECTION_CONFIG_FIELD = MethodHandles
 65 |               .privateLookupIn(ConfigSessionHandler.class, MethodHandles.lookup())
 66 |               .findGetter(ConfigSessionHandler.class, "serverConn", VelocityServerConnection.class);
 67 | 
 68 |       MethodHandle versionsField = MethodHandles.privateLookupIn(StateRegistry.PacketRegistry.class, MethodHandles.lookup())
 69 |           .findGetter(StateRegistry.PacketRegistry.class, "versions", Map.class);
 70 | 
 71 |       MethodHandle packetIdToSupplierField = MethodHandles
 72 |           .privateLookupIn(StateRegistry.PacketRegistry.ProtocolRegistry.class, MethodHandles.lookup())
 73 |           .findGetter(StateRegistry.PacketRegistry.ProtocolRegistry.class, "packetIdToSupplier", IntObjectMap.class);
 74 | 
 75 |       MethodHandle packetClassToIdField = MethodHandles
 76 |           .privateLookupIn(StateRegistry.PacketRegistry.ProtocolRegistry.class, MethodHandles.lookup())
 77 |           .findGetter(StateRegistry.PacketRegistry.ProtocolRegistry.class, "packetClassToId", Object2IntMap.class);
 78 | 
 79 |       List<PacketHook> hooks = new ArrayList<>();
 80 |       hooks.add(new PluginMessageHook());
 81 |       hooks.add(new HandshakeHook());
 82 | 
 83 |       BiConsumer<? super ProtocolVersion, ? super StateRegistry.PacketRegistry.ProtocolRegistry> consumer = (version, registry) -> {
 84 |         try {
 85 |           IntObjectMap<Supplier<? extends MinecraftPacket>> packetIdToSupplier
 86 |               = (IntObjectMap<Supplier<? extends MinecraftPacket>>) packetIdToSupplierField.invoke(registry);
 87 | 
 88 |           Object2IntMap<Class<? extends MinecraftPacket>> packetClassToId
 89 |               = (Object2IntMap<Class<? extends MinecraftPacket>>) packetClassToIdField.invoke(registry);
 90 | 
 91 |           hooks.forEach(hook -> {
 92 |             int packetId = packetClassToId.getInt(hook.getType());
 93 |             packetClassToId.put(hook.getHookClass(), packetId);
 94 |             packetIdToSupplier.remove(packetId);
 95 |             packetIdToSupplier.put(packetId, hook.getHook());
 96 |           });
 97 |         } catch (Throwable e) {
 98 |           throw new ReflectionException(e);
 99 |         }
100 |       };
101 | 
102 |       MethodHandle clientboundGetter = MethodHandles.privateLookupIn(StateRegistry.class, MethodHandles.lookup())
103 |           .findGetter(StateRegistry.class, "clientbound", StateRegistry.PacketRegistry.class);
104 | 
105 |       MethodHandle serverboundGetter = MethodHandles.privateLookupIn(StateRegistry.class, MethodHandles.lookup())
106 |           .findGetter(StateRegistry.class, "serverbound", StateRegistry.PacketRegistry.class);
107 | 
108 |       StateRegistry.PacketRegistry playClientbound = (StateRegistry.PacketRegistry) clientboundGetter.invokeExact(StateRegistry.PLAY);
109 |       StateRegistry.PacketRegistry configClientbound = (StateRegistry.PacketRegistry) clientboundGetter.invokeExact(StateRegistry.CONFIG);
110 |       StateRegistry.PacketRegistry handshakeServerbound = (StateRegistry.PacketRegistry) serverboundGetter.invokeExact(StateRegistry.HANDSHAKE);
111 | 
112 |       ((Map<ProtocolVersion, StateRegistry.PacketRegistry.ProtocolRegistry>) versionsField.invokeExact(playClientbound)).forEach(consumer);
113 |       ((Map<ProtocolVersion, StateRegistry.PacketRegistry.ProtocolRegistry>) versionsField.invokeExact(configClientbound)).forEach(consumer);
114 |       ((Map<ProtocolVersion, StateRegistry.PacketRegistry.ProtocolRegistry>) versionsField.invokeExact(handshakeServerbound)).forEach(consumer);
115 |     } catch (Throwable e) {
116 |       throw new ReflectionException(e);
117 |     }
118 |   }
119 | }
120 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/hooks/PacketHook.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.hooks;
19 | 
20 | import com.velocitypowered.proxy.protocol.MinecraftPacket;
21 | import java.util.function.Supplier;
22 | 
23 | public interface PacketHook {
24 | 
25 |   Supplier<MinecraftPacket> getHook();
26 | 
27 |   Class<? extends MinecraftPacket> getType();
28 | 
29 |   Class<? extends MinecraftPacket> getHookClass();
30 | }
31 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/hooks/PluginMessageHook.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.hooks;
19 | 
20 | import com.velocitypowered.api.network.ProtocolVersion;
21 | import com.velocitypowered.proxy.connection.MinecraftSessionHandler;
22 | import com.velocitypowered.proxy.connection.backend.BackendPlaySessionHandler;
23 | import com.velocitypowered.proxy.connection.backend.ConfigSessionHandler;
24 | import com.velocitypowered.proxy.connection.backend.VelocityServerConnection;
25 | import com.velocitypowered.proxy.connection.client.ConnectedPlayer;
26 | import com.velocitypowered.proxy.protocol.MinecraftPacket;
27 | import com.velocitypowered.proxy.protocol.ProtocolUtils;
28 | import com.velocitypowered.proxy.protocol.packet.PluginMessagePacket;
29 | import com.velocitypowered.proxy.protocol.util.PluginMessageUtil;
30 | import io.netty.buffer.ByteBuf;
31 | import io.netty.buffer.Unpooled;
32 | import java.lang.invoke.MethodHandle;
33 | import java.nio.charset.StandardCharsets;
34 | import java.text.MessageFormat;
35 | import java.util.function.Supplier;
36 | import net.elytrium.commons.utils.reflection.ReflectionException;
37 | import net.elytrium.velocitytools.Settings;
38 | 
39 | class PluginMessageHook extends PluginMessagePacket implements PacketHook {
40 | 
41 |   protected static MethodHandle SERVER_CONNECTION_BACKEND_PLAY_FIELD;
42 |   protected static MethodHandle SERVER_CONNECTION_CONFIG_FIELD;
43 | 
44 |   private final boolean enabled = Settings.IMP.TOOLS.BRAND_CHANGER.REWRITE_IN_GAME;
45 |   private final String inGameBrand = Settings.IMP.TOOLS.BRAND_CHANGER.IN_GAME_BRAND;
46 | 
47 |   @Override
48 |   public boolean handle(MinecraftSessionHandler handler) {
49 |     if (this.enabled && PluginMessageUtil.isMcBrand(this)) {
50 |       try {
51 |         if (handler instanceof BackendPlaySessionHandler) {
52 |           ConnectedPlayer player = ((VelocityServerConnection) SERVER_CONNECTION_BACKEND_PLAY_FIELD.invoke(handler)).getPlayer();
53 |           player.getConnection().write(this.rewriteMinecraftBrand(this, player.getProtocolVersion()));
54 |           return true;
55 |         } else if (handler instanceof ConfigSessionHandler) {
56 |           ConnectedPlayer player = ((VelocityServerConnection) SERVER_CONNECTION_CONFIG_FIELD.invoke(handler)).getPlayer();
57 |           player.getConnection().write(this.rewriteMinecraftBrand(this, player.getProtocolVersion()));
58 |           return true;
59 |         }
60 |       } catch (Throwable e) {
61 |         throw new ReflectionException(e);
62 |       }
63 |     }
64 | 
65 |     return super.handle(handler);
66 |   }
67 | 
68 |   private PluginMessagePacket rewriteMinecraftBrand(PluginMessagePacket message, ProtocolVersion protocolVersion) {
69 |     String currentBrand = PluginMessageUtil.readBrandMessage(message.content());
70 |     String rewrittenBrand = MessageFormat.format(this.inGameBrand, currentBrand);
71 |     ByteBuf rewrittenBuf = Unpooled.buffer();
72 |     if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) >= 0) {
73 |       ProtocolUtils.writeString(rewrittenBuf, rewrittenBrand);
74 |     } else {
75 |       rewrittenBuf.writeCharSequence(rewrittenBrand, StandardCharsets.UTF_8);
76 |     }
77 | 
78 |     return new PluginMessagePacket(message.getChannel(), rewrittenBuf);
79 |   }
80 | 
81 |   @Override
82 |   public Supplier<MinecraftPacket> getHook() {
83 |     return PluginMessageHook::new;
84 |   }
85 | 
86 |   @Override
87 |   public Class<? extends MinecraftPacket> getType() {
88 |     return PluginMessagePacket.class;
89 |   }
90 | 
91 |   @Override
92 |   public Class<? extends MinecraftPacket> getHookClass() {
93 |     return this.getClass();
94 |   }
95 | }
96 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/listeners/BrandChangerPingListener.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.listeners;
19 | 
20 | import com.velocitypowered.api.event.Subscribe;
21 | import com.velocitypowered.api.event.proxy.ProxyPingEvent;
22 | import com.velocitypowered.api.proxy.server.ServerPing;
23 | import net.elytrium.velocitytools.Settings;
24 | 
25 | public class BrandChangerPingListener {
26 | 
27 |   private final boolean showAlways;
28 |   private final String pingBrand;
29 | 
30 |   public BrandChangerPingListener() {
31 |     this.showAlways = Settings.IMP.TOOLS.BRAND_CHANGER.SHOW_ALWAYS;
32 |     this.pingBrand = Settings.IMP.TOOLS.BRAND_CHANGER.PING_BRAND;
33 |   }
34 | 
35 |   @Subscribe
36 |   public void onPing(ProxyPingEvent event) {
37 |     ServerPing.Builder builder = event.getPing().asBuilder();
38 | 
39 |     builder.version(new ServerPing.Version(this.showAlways ? -1 : event.getPing().getVersion().getProtocol(), this.pingBrand));
40 | 
41 |     event.setPing(builder.build());
42 |   }
43 | }
44 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/listeners/ProtocolBlockerJoinListener.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.listeners;
19 | 
20 | import com.velocitypowered.api.event.Subscribe;
21 | import com.velocitypowered.api.event.connection.PreLoginEvent;
22 | import com.velocitypowered.api.network.ProtocolVersion;
23 | import com.velocitypowered.proxy.connection.client.InitialInboundConnection;
24 | import com.velocitypowered.proxy.connection.client.LoginInboundConnection;
25 | import java.lang.invoke.MethodHandle;
26 | import java.lang.invoke.MethodHandles;
27 | import java.util.List;
28 | import java.util.stream.Collectors;
29 | import net.elytrium.commons.utils.reflection.ReflectionException;
30 | import net.elytrium.velocitytools.Settings;
31 | import net.elytrium.velocitytools.VelocityTools;
32 | import net.elytrium.velocitytools.utils.ProtocolUtil;
33 | import net.elytrium.velocitytools.utils.WhitelistUtil;
34 | import net.kyori.adventure.text.Component;
35 | 
36 | public class ProtocolBlockerJoinListener {
37 | 
38 |   private static final MethodHandle MH_delegate;
39 | 
40 |   private final boolean whitelist;
41 |   private final List<Integer> protocolNumbers;
42 |   private final List<ProtocolVersion> protocolVersions;
43 |   private final ProtocolVersion minimumProtocolVersion;
44 |   private final ProtocolVersion maximumProtocolVersion;
45 |   private final Component kickReason;
46 | 
47 |   public ProtocolBlockerJoinListener() {
48 |     this.whitelist = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.WHITELIST;
49 |     this.protocolNumbers = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.PROTOCOLS;
50 |     this.protocolVersions = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.VERSIONS.stream()
51 |         .map(ProtocolUtil::protocolVersionFromString)
52 |         .collect(Collectors.toList());
53 |     this.minimumProtocolVersion = ProtocolUtil.protocolVersionFromString(Settings.IMP.TOOLS.PROTOCOL_BLOCKER.MINIMUM_VERSION);
54 |     this.maximumProtocolVersion = ProtocolUtil.protocolVersionFromString(Settings.IMP.TOOLS.PROTOCOL_BLOCKER.MAXIMUM_VERSION);
55 |     this.kickReason = VelocityTools.getSerializer().deserialize(Settings.IMP.TOOLS.PROTOCOL_BLOCKER.KICK_REASON);
56 |   }
57 | 
58 |   @Subscribe
59 |   public void onJoin(PreLoginEvent event) {
60 |     try {
61 |       InitialInboundConnection inbound = (InitialInboundConnection) MH_delegate.invoke(event.getConnection());
62 | 
63 |       inbound.getConnection().eventLoop().execute(() -> {
64 |         ProtocolVersion playerProtocol = event.getConnection().getProtocolVersion();
65 |         if (this.minimumProtocolVersion.compareTo(playerProtocol) > 0 || this.maximumProtocolVersion.compareTo(playerProtocol) < 0
66 |             || WhitelistUtil.checkForWhitelist(this.whitelist,
67 |             this.protocolNumbers.contains(playerProtocol.getProtocol())
68 |                 || this.protocolVersions.contains(playerProtocol))) {
69 |           event.getConnection().getVirtualHost().ifPresent(conn -> inbound.disconnect(this.kickReason));
70 |         }
71 |       });
72 |     } catch (Throwable e) {
73 |       throw new ReflectionException(e);
74 |     }
75 |   }
76 | 
77 |   static {
78 |     try {
79 |       MH_delegate = MethodHandles.privateLookupIn(LoginInboundConnection.class, MethodHandles.lookup())
80 |           .findGetter(LoginInboundConnection.class, "delegate", InitialInboundConnection.class);
81 |     } catch (NoSuchFieldException | IllegalAccessException e) {
82 |       throw new RuntimeException(e);
83 |     }
84 |   }
85 | }
86 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/listeners/ProtocolBlockerPingListener.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.listeners;
19 | 
20 | import com.velocitypowered.api.event.PostOrder;
21 | import com.velocitypowered.api.event.Subscribe;
22 | import com.velocitypowered.api.event.proxy.ProxyPingEvent;
23 | import com.velocitypowered.api.network.ProtocolVersion;
24 | import com.velocitypowered.api.proxy.server.ServerPing;
25 | import java.util.List;
26 | import java.util.stream.Collectors;
27 | import net.elytrium.velocitytools.Settings;
28 | import net.elytrium.velocitytools.VelocityTools;
29 | import net.elytrium.velocitytools.utils.ProtocolUtil;
30 | import net.elytrium.velocitytools.utils.WhitelistUtil;
31 | import net.kyori.adventure.text.Component;
32 | 
33 | public class ProtocolBlockerPingListener {
34 | 
35 |   private final boolean whitelist;
36 |   private final List<Integer> protocolNumbers;
37 |   private final List<ProtocolVersion> protocolVersions;
38 |   private final ProtocolVersion minimumProtocolVersion;
39 |   private final ProtocolVersion maximumProtocolVersion;
40 |   private final String brand;
41 |   private final String motd;
42 |   private final Component motdComponent;
43 | 
44 |   public ProtocolBlockerPingListener() {
45 |     this.whitelist = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.WHITELIST;
46 |     this.protocolNumbers = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.PROTOCOLS;
47 |     this.protocolVersions = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.VERSIONS.stream()
48 |         .map(ProtocolUtil::protocolVersionFromString)
49 |         .collect(Collectors.toList());
50 |     this.minimumProtocolVersion = ProtocolUtil.protocolVersionFromString(Settings.IMP.TOOLS.PROTOCOL_BLOCKER.MINIMUM_VERSION);
51 |     this.maximumProtocolVersion = ProtocolUtil.protocolVersionFromString(Settings.IMP.TOOLS.PROTOCOL_BLOCKER.MAXIMUM_VERSION);
52 |     this.brand = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.BRAND;
53 |     this.motd = Settings.IMP.TOOLS.PROTOCOL_BLOCKER.MOTD;
54 |     this.motdComponent = VelocityTools.getSerializer().deserialize(this.motd);
55 |   }
56 | 
57 |   @Subscribe(order = PostOrder.LAST)
58 |   public void onPing(ProxyPingEvent event) {
59 |     ServerPing.Builder builder = event.getPing().asBuilder();
60 | 
61 |     ProtocolVersion playerProtocol = event.getConnection().getProtocolVersion();
62 |     int playerProtocolNumber = event.getConnection().getProtocolVersion().getProtocol();
63 |     if (this.minimumProtocolVersion.compareTo(playerProtocol) > 0 || this.maximumProtocolVersion.compareTo(playerProtocol) < 0
64 |         || WhitelistUtil.checkForWhitelist(this.whitelist,
65 |         this.protocolNumbers.contains(playerProtocolNumber)
66 |             || this.protocolVersions.contains(playerProtocol))) {
67 |       builder.version(new ServerPing.Version(playerProtocolNumber + 1, this.brand));
68 |       if (!this.motd.isEmpty()) {
69 |         builder.description(this.motdComponent);
70 |       }
71 |     }
72 | 
73 |     event.setPing(builder.build());
74 |   }
75 | }
76 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/utils/ProtocolUtil.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.utils;
19 | 
20 | import com.velocitypowered.api.network.ProtocolVersion;
21 | 
22 | public class ProtocolUtil {
23 | 
24 |   public static ProtocolVersion protocolVersionFromString(String string) {
25 |     if (string.equalsIgnoreCase("LATEST")) {
26 |       return ProtocolVersion.MAXIMUM_VERSION;
27 |     }
28 | 
29 |     return ProtocolVersion.valueOf("MINECRAFT_" + string.replace(".", "_"));
30 |   }
31 | }
32 | 


--------------------------------------------------------------------------------
/src/main/java/net/elytrium/velocitytools/utils/WhitelistUtil.java:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Copyright (C) 2021 - 2025 Elytrium
 3 |  *
 4 |  * This program is free software: you can redistribute it and/or modify
 5 |  * it under the terms of the GNU Affero General Public License as published by
 6 |  * the Free Software Foundation, either version 3 of the License, or
 7 |  * (at your option) any later version.
 8 |  *
 9 |  * This program is distributed in the hope that it will be useful,
10 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 |  * GNU Affero General Public License for more details.
13 |  *
14 |  * You should have received a copy of the GNU Affero General Public License
15 |  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 |  */
17 | 
18 | package net.elytrium.velocitytools.utils;
19 | 
20 | public class WhitelistUtil {
21 | 
22 |   public static boolean checkForWhitelist(boolean whitelist, boolean toCheck) {
23 |     if (whitelist) {
24 |       return !toCheck;
25 |     } else {
26 |       return toCheck;
27 |     }
28 |   }
29 | }
30 | 


--------------------------------------------------------------------------------