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Add custom lint rule project.

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This commit is contained in:
Alan Evans
2020-05-01 16:19:24 -03:00
committed by Greyson Parrelli
parent 7f17b66a6c
commit 456857bbbd
10 changed files with 195 additions and 4 deletions
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20
lintchecks/build.gradle Normal file
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apply plugin: 'java-library'
repositories {
google()
jcenter()
}
dependencies {
compileOnly 'com.android.tools.lint:lint-api:26.6.3'
compileOnly 'com.android.tools.lint:lint-checks:26.6.3'
testImplementation 'com.android.tools.lint:lint-tests:26.6.3'
testImplementation 'junit:junit:4.12'
}
jar {
manifest {
attributes('Lint-Registry-v2': 'org.signal.lint.Registry')
}
}

22
lintchecks/src/main/java/org/signal/lint/Registry.java Normal file
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package org.signal.lint;
import com.android.tools.lint.client.api.IssueRegistry;
import com.android.tools.lint.detector.api.ApiKt;
import com.android.tools.lint.detector.api.Issue;
import java.util.Collections;
import java.util.List;
@SuppressWarnings("UnstableApiUsage")
public final class Registry extends IssueRegistry {
@Override
public List<Issue> getIssues() {
return Collections.singletonList(SignalLogDetector.LOG_NOT_SIGNAL);
}
@Override
public int getApi() {
return ApiKt.CURRENT_API;
}
}

77
lintchecks/src/main/java/org/signal/lint/SignalLogDetector.java Normal file
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package org.signal.lint;
import com.android.tools.lint.client.api.JavaEvaluator;
import com.android.tools.lint.detector.api.Category;
import com.android.tools.lint.detector.api.Detector;
import com.android.tools.lint.detector.api.Implementation;
import com.android.tools.lint.detector.api.Issue;
import com.android.tools.lint.detector.api.JavaContext;
import com.android.tools.lint.detector.api.LintFix;
import com.android.tools.lint.detector.api.Scope;
import com.android.tools.lint.detector.api.Severity;
import com.intellij.psi.PsiMethod;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.uast.UCallExpression;
import org.jetbrains.uast.UExpression;
import java.util.Arrays;
import java.util.List;
@SuppressWarnings("UnstableApiUsage")
public final class SignalLogDetector extends Detector implements Detector.UastScanner {
static final Issue LOG_NOT_SIGNAL = Issue.create("LogNotSignal",
"Logging call to Android Log instead of Signal's Logger",
"Signal has its own logger which must be used.",
Category.MESSAGES,
5,
Severity.ERROR,
new Implementation(SignalLogDetector.class, Scope.JAVA_FILE_SCOPE));
@Override
public List<String> getApplicableMethodNames() {
return Arrays.asList("v", "d", "i", "w", "e", "wtf");
}
@Override
public void visitMethodCall(JavaContext context, @NotNull UCallExpression call, @NotNull PsiMethod method) {
JavaEvaluator evaluator = context.getEvaluator();
if (evaluator.isMemberInClass(method, "android.util.Log")) {
LintFix fix = quickFixIssueLog(call);
context.report(LOG_NOT_SIGNAL, call, context.getLocation(call), "Using 'android.util.Log' instead of a Signal Logger", fix);
}
}
private LintFix quickFixIssueLog(@NotNull UCallExpression logCall) {
List<UExpression> arguments = logCall.getValueArguments();
String methodName = logCall.getMethodName();
UExpression tag = arguments.get(0);
String fixSource = "org.thoughtcrime.securesms.logging.Log.";
switch (arguments.size()) {
case 2:
UExpression msgOrThrowable = arguments.get(1);
fixSource += String.format("%s(%s, %s)", methodName, tag, msgOrThrowable.asSourceString());
break;
case 3:
UExpression msg = arguments.get(1);
UExpression throwable = arguments.get(2);
fixSource += String.format("%s(%s, %s, %s)", methodName, tag, msg.asSourceString(), throwable.asSourceString());
break;
default:
throw new IllegalStateException("android.util.Log overloads should have 2 or 3 arguments");
}
String logCallSource = logCall.asSourceString();
LintFix.GroupBuilder fixGrouper = fix().group();
fixGrouper.add(fix().replace().text(logCallSource).shortenNames().reformat(true).with(fixSource).build());
return fixGrouper.build();
}
}

57
lintchecks/src/test/java/org/signal/lint/LogDetectorTest.java Normal file
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package org.signal.lint;
import org.junit.Test;
import static com.android.tools.lint.checks.infrastructure.TestFiles.java;
import static com.android.tools.lint.checks.infrastructure.TestLintTask.lint;
public final class LogDetectorTest {
@Test
public void androidLogUsed_LogNotSignal_2_args() {
lint()
.files(
java("package foo;\n" +
"import android.util.Log;\n" +
"public class Example {\n" +
" public void log() {\n" +
" Log.d(\"TAG\", \"msg\");\n" +
" }\n" +
"}")
)
.issues(SignalLogDetector.LOG_NOT_SIGNAL)
.run()
.expect("src/foo/Example.java:5: Error: Using 'android.util.Log' instead of a Signal Logger [LogNotSignal]\n" +
" Log.d(\"TAG\", \"msg\");\n" +
" ~~~~~~~~~~~~~~~~~~~\n" +
"1 errors, 0 warnings")
.expectFixDiffs("Fix for src/foo/Example.java line 5: Replace with org.thoughtcrime.securesms.logging.Log.d(\"TAG\", \"msg\"):\n" +
"@@ -5 +5\n" +
"- Log.d(\"TAG\", \"msg\");\n" +
"+ org.thoughtcrime.securesms.logging.Log.d(\"TAG\", \"msg\");");
}
@Test
public void androidLogUsed_LogNotSignal_3_args() {
lint()
.files(
java("package foo;\n" +
"import android.util.Log;\n" +
"public class Example {\n" +
" public void log() {\n" +
" Log.w(\"TAG\", \"msg\", new Exception());\n" +
" }\n" +
"}")
)
.issues(SignalLogDetector.LOG_NOT_SIGNAL)
.run()
.expect("src/foo/Example.java:5: Error: Using 'android.util.Log' instead of a Signal Logger [LogNotSignal]\n" +
" Log.w(\"TAG\", \"msg\", new Exception());\n" +
" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" +
"1 errors, 0 warnings")
.expectFixDiffs("Fix for src/foo/Example.java line 5: Replace with org.thoughtcrime.securesms.logging.Log.w(\"TAG\", \"msg\", new Exception()):\n" +
"@@ -5 +5\n" +
"- Log.w(\"TAG\", \"msg\", new Exception());\n" +
"+ org.thoughtcrime.securesms.logging.Log.w(\"TAG\", \"msg\", new Exception());");
}
}