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experimental access code for RbacUserEntity

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This commit is contained in:
Michael Hoennig
2022-09-03 12:31:56 +02:00
parent 1451e7b661
commit 2abe88eb15
2 changed files with 102 additions and 1 deletions
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34
src/main/java/net/hostsharing/hsadminng/rbac/rbacuser/RbacUserEntity.java
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@ -3,7 +3,12 @@ package net.hostsharing.hsadminng.rbac.rbacuser;
import lombok.*;
import org.springframework.data.annotation.Immutable;
import javax.persistence.*;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.UUID;
@Entity
@ -16,8 +21,35 @@ import java.util.UUID;
@AllArgsConstructor
public class RbacUserEntity {
private static final int MAX_VALIDITY_DAYS = 21;
private static DateTimeFormatter DATE_FORMAT_WITH_FULLHOUR = DateTimeFormatter.ofPattern("MM-dd-yyyy HH");
@Id
private UUID uuid;
private String name;
public String generateAccessCode() {
return generateAccessCode(LocalDateTime.now());
}
public boolean isValidAccessCode(final String accessCode, final int validityHours) {
if (validityHours > 24 * MAX_VALIDITY_DAYS) {
throw new IllegalArgumentException("Max validity (%s days) exceeded.".formatted(MAX_VALIDITY_DAYS));
}
if (generateAccessCode(LocalDateTime.now().minus(validityHours, ChronoUnit.HOURS)).equals(accessCode)) {
return true;
}
if (validityHours < 0) {
return false;
}
return isValidAccessCode(accessCode, validityHours - 1);
}
String generateAccessCode(final LocalDateTime timestamp) {
final var compound = name + ":" + uuid + ":" + timestamp.format(DATE_FORMAT_WITH_FULLHOUR);
final var code = String.valueOf(1000000 + Math.abs(compound.hashCode()) % 100000);
return code.substring(1, 4) + ":" + code.substring(4, 7);
}
}