io.codemodder.codemods.SanitizeHttpHeaderCodemod Maven / Gradle / Ivy

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Codemods for fixing common errors across many Java projects

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package io.codemodder.codemods;

import static io.codemodder.javaparser.JavaParserTransformer.wrap;

import com.contrastsecurity.sarif.Result;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.MethodCallExpr;
import io.codemodder.*;
import io.codemodder.javaparser.ChangesResult;
import io.codemodder.providers.sarif.semgrep.SemgrepScan;
import io.github.pixee.security.Newlines;
import java.util.List;
import javax.inject.Inject;

@Codemod(
    id = "pixee:java/strip-http-header-newlines",
    importance = Importance.MEDIUM,
    reviewGuidance = ReviewGuidance.MERGE_WITHOUT_REVIEW)
public final class SanitizeHttpHeaderCodemod extends SarifPluginJavaParserChanger {

  @Inject
  public SanitizeHttpHeaderCodemod(
      @SemgrepScan(ruleId = "strip-http-header-newlines") RuleSarif semgrepSarif) {
    super(semgrepSarif, MethodCallExpr.class);
  }

  @Override
  public ChangesResult onResultFound(
      final CodemodInvocationContext context,
      final CompilationUnit cu,
      final MethodCallExpr setHeaderCall,
      final Result result) {
    Expression headerValueArgument = setHeaderCall.getArgument(1);
    final boolean success =
        wrap(headerValueArgument).withStaticMethod(Newlines.class.getName(), "stripAll", false);
    return success
        ? ChangesResult.changesAppliedWith(List.of(DependencyGAV.JAVA_SECURITY_TOOLKIT))
        : ChangesResult.noChanges;
  }
}