Skip to content

Use StringUtils.uriDecode where feasible #46751

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 2 commits into from
+3 −43
Closed

Use StringUtils.uriDecode where feasible #46751

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
2f91fe2
Use StringUtils.uriDecode where feasible
nosan Aug 8, 2025
6cfe880
Use StringUtils.uriDecode where feasible
nosan Aug 9, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
42 changes: 1 addition & 41 deletions ...org/springframework/boot/opentelemetry/autoconfigure/OpenTelemetryResourceAttributes.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,6 @@

package org.springframework.boot.opentelemetry.autoconfigure;

import java.io.ByteArrayOutputStream;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.LinkedHashMap;
Expand Down Expand Up @@ -129,7 +128,7 @@ private Map<String, String> getResourceAttributesFromEnv() {
if (index > 0) {
String key = attribute.substring(0, index);
String value = attribute.substring(index + 1);
attributes.put(key.trim(), decode(value.trim()));
attributes.put(key.trim(), StringUtils.uriDecode(value.trim(), StandardCharsets.UTF_8));
}
}
String otelServiceName = getEnv("OTEL_SERVICE_NAME");
Expand All @@ -143,43 +142,4 @@ private Map<String, String> getResourceAttributesFromEnv() {
return this.systemEnvironment.apply(name);
}

/**
* Decodes a percent-encoded string. Converts sequences like '%HH' (where HH
* represents hexadecimal digits) back into their literal representations.
* <p>
* Inspired by {@code org.apache.commons.codec.net.PercentCodec}.
* @param value value to decode
* @return the decoded string
*/
private static String decode(String value) {
if (value.indexOf('%') < 0) {
return value;
}
byte[] bytes = value.getBytes(StandardCharsets.UTF_8);
ByteArrayOutputStream out = new ByteArrayOutputStream(bytes.length);
for (int i = 0; i < bytes.length; i++) {
byte b = bytes[i];
if (b != '%') {
out.write(b);
continue;
}
int u = decodeHex(bytes, i + 1);
int l = decodeHex(bytes, i + 2);
if (u >= 0 && l >= 0) {
out.write((u << 4) + l);
}
else {
throw new IllegalArgumentException(
"Failed to decode percent-encoded characters at index %d in the value: '%s'".formatted(i,
value));
}
i += 2;
}
return out.toString(StandardCharsets.UTF_8);
}

private static int decodeHex(byte[] bytes, int index) {
return (index < bytes.length) ? Character.digit(bytes[index], 16) : -1;
}

}
4 changes: 2 additions & 2 deletions ...pringframework/boot/opentelemetry/autoconfigure/OpenTelemetryResourceAttributesTests.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -137,7 +137,7 @@ void otelResourceAttributeValuesShouldBePercentDecodedWhenMultiByteSequences() {
void illegalArgumentExceptionShouldBeThrownWhenDecodingIllegalHexCharPercentEncodedValue() {
this.environmentVariables.put("OTEL_RESOURCE_ATTRIBUTES", "key=abc%ß");
assertThatIllegalArgumentException().isThrownBy(this::getAttributes)
.withMessage("Failed to decode percent-encoded characters at index 3 in the value: 'abc%ß'");
.withMessage("Incomplete trailing escape (%) pattern");
}

@Test
Expand All @@ -150,7 +150,7 @@ void replacementCharShouldBeUsedWhenDecodingNonUtf8Character() {
void illegalArgumentExceptionShouldBeThrownWhenDecodingInvalidPercentEncodedValue() {
this.environmentVariables.put("OTEL_RESOURCE_ATTRIBUTES", "key=%");
assertThatIllegalArgumentException().isThrownBy(this::getAttributes)
.withMessage("Failed to decode percent-encoded characters at index 0 in the value: '%'");
.withMessage("Incomplete trailing escape (%) pattern");
}

@Test
Expand Down