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Enable case-sensitive usernames

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This commit is contained in:
Katherine Yen
2022-12-13 07:59:37 -08:00
committed by GitHub
parent a883426402
commit 26f5ffdde3
9 changed files with 83 additions and 46 deletions
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11
service/src/main/java/org/whispersystems/textsecuregcm/util/UsernameGenerator.java
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@@ -22,18 +22,17 @@ import static org.whispersystems.textsecuregcm.metrics.MetricsUtil.name;
public class UsernameGenerator {
/**
* Nicknames are
* Nicknames
* <list>
* <li> lowercase </li>
* <li> do not start with a number </li>
* <li> alphanumeric or underscores only </li>
* <li> minimum length 3 </li>
* <li> maximum length 32 </li>
* <li> are alphanumeric or underscores only </li>
* <li> have minimum length 3 </li>
* <li> have maximum length 32 </li>
* </list>
*
* Usernames typically consist of a nickname and an integer discriminator
*/
public static final Pattern NICKNAME_PATTERN = Pattern.compile("^[_a-z][_a-z0-9]{2,31}$");
public static final Pattern NICKNAME_PATTERN = Pattern.compile("^[_a-zA-Z][_a-zA-Z0-9]{2,31}$");
public static final String SEPARATOR = ".";
private static final Counter USERNAME_NOT_AVAILABLE_COUNTER = Metrics.counter(name(UsernameGenerator.class, "usernameNotAvailable"));

10
service/src/main/java/org/whispersystems/textsecuregcm/util/UsernameNormalizer.java Normal file
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@@ -0,0 +1,10 @@
package org.whispersystems.textsecuregcm.util;
import java.util.Locale;
public final class UsernameNormalizer {
private UsernameNormalizer() {}
public static String normalize(final String username) {
return username.toLowerCase(Locale.ROOT);
}
}