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Add support for apache/tomcat style rewite rules
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40 changes: 40 additions & 0 deletions
40
servlet/src/main/java/io/undertow/servlet/compat/rewrite/Resolver.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,40 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * Copyright 2014 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package io.undertow.servlet.compat.rewrite; | ||
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| /** | ||
| * Resolver abstract class. | ||
| * | ||
| * @author Remy Maucherat | ||
| */ | ||
| public abstract class Resolver { | ||
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| public abstract String resolve(String key); | ||
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| public String resolveEnv(String key) { | ||
| return System.getProperty(key); | ||
| } | ||
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| public abstract String resolveSsl(String key); | ||
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| public abstract String resolveHttp(String key); | ||
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| public abstract boolean resolveResource(int type, String name); | ||
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| } |
275 changes: 275 additions & 0 deletions
275
servlet/src/main/java/io/undertow/servlet/compat/rewrite/RewriteCond.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,275 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * Copyright 2014 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
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| package io.undertow.servlet.compat.rewrite; | ||
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| import java.util.Locale; | ||
| import java.util.Map; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
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| /** | ||
| * @author Remy Maucherat | ||
| */ | ||
| public class RewriteCond { | ||
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| public abstract class Condition { | ||
| public abstract boolean evaluate(String value, Resolver resolver); | ||
| } | ||
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| public class PatternCondition extends Condition { | ||
| public Pattern pattern; | ||
| public Matcher matcher = null; | ||
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| public boolean evaluate(String value, Resolver resolver) { | ||
| Matcher m = pattern.matcher(value); | ||
| if (m.matches()) { | ||
| matcher = m; | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
| } | ||
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| public class LexicalCondition extends Condition { | ||
| /** | ||
| * -1: < | ||
| * 0: = | ||
| * 1: > | ||
| */ | ||
| public int type = 0; | ||
| public String condition; | ||
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| public boolean evaluate(String value, Resolver resolver) { | ||
| int result = value.compareTo(condition); | ||
| switch (type) { | ||
| case -1: | ||
| return (result < 0); | ||
| case 0: | ||
| return (result == 0); | ||
| case 1: | ||
| return (result > 0); | ||
| default: | ||
| return false; | ||
| } | ||
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| } | ||
| } | ||
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| public class ResourceCondition extends Condition { | ||
| /** | ||
| * 0: -d (is directory ?) | ||
| * 1: -f (is regular file ?) | ||
| * 2: -s (is regular file with size ?) | ||
| */ | ||
| public int type = 0; | ||
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| public boolean evaluate(String value, Resolver resolver) { | ||
| switch (type) { | ||
| case 0: | ||
| return true; | ||
| case 1: | ||
| return true; | ||
| case 2: | ||
| return true; | ||
| default: | ||
| return false; | ||
| } | ||
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| } | ||
| } | ||
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| protected String testString = null; | ||
| protected String condPattern = null; | ||
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| public String getCondPattern() { | ||
| return condPattern; | ||
| } | ||
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| public void setCondPattern(String condPattern) { | ||
| this.condPattern = condPattern; | ||
| } | ||
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| public String getTestString() { | ||
| return testString; | ||
| } | ||
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| public void setTestString(String testString) { | ||
| this.testString = testString; | ||
| } | ||
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| public void parse(Map<String, RewriteMap> maps) { | ||
| test = new Substitution(); | ||
| test.setSub(testString); | ||
| test.parse(maps); | ||
| if (condPattern.startsWith("!")) { | ||
| positive = false; | ||
| condPattern = condPattern.substring(1); | ||
| } | ||
| if (condPattern.startsWith("<")) { | ||
| LexicalCondition condition = new LexicalCondition(); | ||
| condition.type = -1; | ||
| condition.condition = condPattern.substring(1); | ||
| } else if (condPattern.startsWith(">")) { | ||
| LexicalCondition condition = new LexicalCondition(); | ||
| condition.type = 1; | ||
| condition.condition = condPattern.substring(1); | ||
| } else if (condPattern.startsWith("=")) { | ||
| LexicalCondition condition = new LexicalCondition(); | ||
| condition.type = 0; | ||
| condition.condition = condPattern.substring(1); | ||
| } else if (condPattern.equals("-d")) { | ||
| ResourceCondition ncondition = new ResourceCondition(); | ||
| ncondition.type = 0; | ||
| } else if (condPattern.equals("-f")) { | ||
| ResourceCondition ncondition = new ResourceCondition(); | ||
| ncondition.type = 1; | ||
| } else if (condPattern.equals("-s")) { | ||
| ResourceCondition ncondition = new ResourceCondition(); | ||
| ncondition.type = 2; | ||
| } else { | ||
| PatternCondition condition = new PatternCondition(); | ||
| int flags = 0; | ||
| if (isNocase()) { | ||
| flags |= Pattern.CASE_INSENSITIVE; | ||
| } | ||
| condition.pattern = Pattern.compile(condPattern, flags); | ||
| } | ||
| } | ||
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| public Matcher getMatcher() { | ||
| Object condition = this.condition.get(); | ||
| if (condition instanceof PatternCondition) { | ||
| return ((PatternCondition) condition).matcher; | ||
| } | ||
| return null; | ||
| } | ||
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| /** | ||
| * String representation. | ||
| */ | ||
| public String toString() { | ||
| // FIXME: Add flags if possible | ||
| return "RewriteCond " + testString + " " + condPattern; | ||
| } | ||
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| protected boolean positive = true; | ||
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| protected Substitution test = null; | ||
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| protected ThreadLocal<Condition> condition = new ThreadLocal<Condition>(); | ||
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| /** | ||
| * This makes the test case-insensitive, i.e., there is no difference between | ||
| * 'A-Z' and 'a-z' both in the expanded TestString and the CondPattern. This | ||
| * flag is effective only for comparisons between TestString and CondPattern. | ||
| * It has no effect on filesystem and subrequest checks. | ||
| */ | ||
| public boolean nocase = false; | ||
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| /** | ||
| * Use this to combine rule conditions with a local OR instead of the implicit AND. | ||
| */ | ||
| public boolean ornext = false; | ||
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| /** | ||
| * Evaluate the condition based on the context | ||
| * | ||
| * @param rule corresponding matched rule | ||
| * @param cond last matched condition | ||
| * @return | ||
| */ | ||
| public boolean evaluate(Matcher rule, Matcher cond, Resolver resolver) { | ||
| String value = test.evaluate(rule, cond, resolver); | ||
| if (nocase) { | ||
| value = value.toLowerCase(Locale.ENGLISH); | ||
| } | ||
| Condition condition = this.condition.get(); | ||
| if (condition == null) { | ||
| if (condPattern.startsWith("<")) { | ||
| LexicalCondition ncondition = new LexicalCondition(); | ||
| ncondition.type = -1; | ||
| ncondition.condition = condPattern.substring(1); | ||
| condition = ncondition; | ||
| } else if (condPattern.startsWith(">")) { | ||
| LexicalCondition ncondition = new LexicalCondition(); | ||
| ncondition.type = 1; | ||
| ncondition.condition = condPattern.substring(1); | ||
| condition = ncondition; | ||
| } else if (condPattern.startsWith("=")) { | ||
| LexicalCondition ncondition = new LexicalCondition(); | ||
| ncondition.type = 0; | ||
| ncondition.condition = condPattern.substring(1); | ||
| condition = ncondition; | ||
| } else if (condPattern.equals("-d")) { | ||
| ResourceCondition ncondition = new ResourceCondition(); | ||
| ncondition.type = 0; | ||
| condition = ncondition; | ||
| } else if (condPattern.equals("-f")) { | ||
| ResourceCondition ncondition = new ResourceCondition(); | ||
| ncondition.type = 1; | ||
| condition = ncondition; | ||
| } else if (condPattern.equals("-s")) { | ||
| ResourceCondition ncondition = new ResourceCondition(); | ||
| ncondition.type = 2; | ||
| condition = ncondition; | ||
| } else { | ||
| PatternCondition ncondition = new PatternCondition(); | ||
| int flags = 0; | ||
| if (isNocase()) { | ||
| flags |= Pattern.CASE_INSENSITIVE; | ||
| } | ||
| ncondition.pattern = Pattern.compile(condPattern, flags); | ||
| condition = ncondition; | ||
| } | ||
| this.condition.set(condition); | ||
| } | ||
| if (positive) { | ||
| return condition.evaluate(value, resolver); | ||
| } else { | ||
| return !condition.evaluate(value, resolver); | ||
| } | ||
| } | ||
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| public boolean isNocase() { | ||
| return nocase; | ||
| } | ||
|
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| public void setNocase(boolean nocase) { | ||
| this.nocase = nocase; | ||
| } | ||
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| public boolean isOrnext() { | ||
| return ornext; | ||
| } | ||
|
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| public void setOrnext(boolean ornext) { | ||
| this.ornext = ornext; | ||
| } | ||
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| public boolean isPositive() { | ||
| return positive; | ||
| } | ||
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| public void setPositive(boolean positive) { | ||
| this.positive = positive; | ||
| } | ||
|
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| } |
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