Kotlin conversion: Verification
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// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package sop;
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import sop.enums.SignatureMode;
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import sop.util.Optional;
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import sop.util.UTCUtil;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import java.text.ParseException;
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import java.util.Date;
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/**
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* Class bundling information about a verified signature.
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*/
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public class Verification {
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private final Date creationTime;
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private final String signingKeyFingerprint;
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private final String signingCertFingerprint;
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private final Optional<SignatureMode> signatureMode;
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private final Optional<String> description;
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private static final String MODE = "mode:";
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/**
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* Create a new {@link Verification} without mode and description.
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*
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* @param creationTime signature creation time
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* @param signingKeyFingerprint fingerprint of the signing (sub-) key
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* @param signingCertFingerprint fingerprint of the certificate
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*/
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public Verification(@Nonnull Date creationTime,
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@Nonnull String signingKeyFingerprint,
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@Nonnull String signingCertFingerprint) {
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this(creationTime, signingKeyFingerprint, signingCertFingerprint, Optional.ofEmpty(), Optional.ofEmpty());
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}
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/**
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* Create a new {@link Verification}.
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*
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* @param creationTime signature creation time
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* @param signingKeyFingerprint fingerprint of the signing (sub-) key
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* @param signingCertFingerprint fingerprint of the certificate
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* @param signatureMode signature mode (optional, may be <pre>null</pre>)
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* @param description free-form description, e.g. <pre>certificate from dkg.asc</pre> (optional, may be <pre>null</pre>)
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*/
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public Verification(@Nonnull Date creationTime,
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@Nonnull String signingKeyFingerprint,
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@Nonnull String signingCertFingerprint,
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@Nullable SignatureMode signatureMode,
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@Nullable String description) {
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this(
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creationTime,
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signingKeyFingerprint,
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signingCertFingerprint,
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Optional.ofNullable(signatureMode),
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Optional.ofNullable(nullSafeTrim(description))
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);
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}
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private Verification(@Nonnull Date creationTime,
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@Nonnull String signingKeyFingerprint,
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@Nonnull String signingCertFingerprint,
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@Nonnull Optional<SignatureMode> signatureMode,
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@Nonnull Optional<String> description) {
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this.creationTime = creationTime;
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this.signingKeyFingerprint = signingKeyFingerprint;
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this.signingCertFingerprint = signingCertFingerprint;
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this.signatureMode = signatureMode;
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this.description = description;
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}
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private static String nullSafeTrim(@Nullable String string) {
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if (string == null) {
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return null;
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}
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return string.trim();
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}
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@Nonnull
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public static Verification fromString(@Nonnull String toString) {
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String[] split = toString.trim().split(" ");
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if (split.length < 3) {
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throw new IllegalArgumentException("Verification must be of the format 'UTC-DATE OpenPGPFingerprint OpenPGPFingerprint [mode] [info]'");
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}
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if (split.length == 3) {
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return new Verification(
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parseUTCDate(split[0]), // timestamp
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split[1], // key FP
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split[2] // cert FP
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);
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}
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SignatureMode mode = null;
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int index = 3;
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if (split[index].startsWith(MODE)) {
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mode = SignatureMode.valueOf(split[3].substring(MODE.length()));
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index++;
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}
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StringBuilder sb = new StringBuilder();
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for (int i = index; i < split.length; i++) {
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if (sb.length() != 0) {
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sb.append(' ');
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}
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sb.append(split[i]);
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}
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return new Verification(
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parseUTCDate(split[0]), // timestamp
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split[1], // key FP
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split[2], // cert FP
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mode, // signature mode
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sb.length() != 0 ? sb.toString() : null // description
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);
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}
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private static Date parseUTCDate(String utcFormatted) {
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try {
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return UTCUtil.parseUTCDate(utcFormatted);
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} catch (ParseException e) {
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throw new IllegalArgumentException("Malformed UTC timestamp.", e);
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}
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}
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/**
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* Return the signatures' creation time.
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*
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* @return signature creation time
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*/
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@Nonnull
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public Date getCreationTime() {
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return creationTime;
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}
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/**
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* Return the fingerprint of the signing (sub)key.
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*
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* @return signing key fingerprint
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*/
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@Nonnull
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public String getSigningKeyFingerprint() {
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return signingKeyFingerprint;
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}
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/**
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* Return the fingerprint fo the signing certificate.
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*
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* @return signing certificate fingerprint
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*/
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@Nonnull
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public String getSigningCertFingerprint() {
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return signingCertFingerprint;
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}
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/**
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* Return the mode of the signature.
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* Optional, may return <pre>null</pre>.
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*
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* @return signature mode
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*/
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@Nonnull
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public Optional<SignatureMode> getSignatureMode() {
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return signatureMode;
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}
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/**
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* Return an optional description.
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* Optional, may return <pre>null</pre>.
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*
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* @return description
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*/
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@Nonnull
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public Optional<String> getDescription() {
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return description;
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder()
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.append(UTCUtil.formatUTCDate(getCreationTime()))
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.append(' ')
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.append(getSigningKeyFingerprint())
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.append(' ')
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.append(getSigningCertFingerprint());
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if (signatureMode.isPresent()) {
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sb.append(' ').append(MODE).append(signatureMode.get());
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}
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if (description.isPresent()) {
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sb.append(' ').append(description.get());
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}
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return sb.toString();
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}
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@Override
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public int hashCode() {
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return toString().hashCode();
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == null) {
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return false;
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}
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if (this == obj) {
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return true;
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}
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if (!(obj instanceof Verification)) {
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return false;
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}
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Verification other = (Verification) obj;
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return toString().equals(other.toString());
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}
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}
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@ -0,0 +1,76 @@
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package sop
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import java.text.ParseException
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import java.util.Date
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import sop.enums.SignatureMode
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import sop.util.Optional
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import sop.util.UTCUtil
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data class Verification(
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val creationTime: Date,
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val signingKeyFingerprint: String,
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val signingCertFingerprint: String,
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val signatureMode: Optional<SignatureMode>,
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val description: Optional<String>
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) {
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@JvmOverloads
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constructor(
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creationTime: Date,
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signingKeyFingerprint: String,
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signingCertFingerprint: String,
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signatureMode: SignatureMode? = null,
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description: String? = null
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) : this(
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creationTime,
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signingKeyFingerprint,
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signingCertFingerprint,
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Optional.ofNullable(signatureMode),
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Optional.ofNullable(description?.trim()))
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override fun toString(): String =
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"${UTCUtil.formatUTCDate(creationTime)} $signingKeyFingerprint $signingCertFingerprint" +
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(if (signatureMode.isPresent) " mode:${signatureMode.get()}" else "") +
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(if (description.isPresent) " ${description.get()}" else "")
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companion object {
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@JvmStatic
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fun fromString(string: String): Verification {
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val split = string.trim().split(" ")
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require(split.size >= 3) {
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"Verification must be of the format 'UTC-DATE OpenPGPFingerprint OpenPGPFingerprint [mode] [info]'."
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}
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if (split.size == 3) {
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return Verification(parseUTCDate(split[0]), split[1], split[2])
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}
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var index = 3
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val mode =
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if (split[3].startsWith("mode:")) {
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index += 1
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SignatureMode.valueOf(split[3].substring("mode:".length))
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} else null
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val description = split.subList(index, split.size).joinToString(" ").ifBlank { null }
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return Verification(
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parseUTCDate(split[0]),
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split[1],
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split[2],
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Optional.ofNullable(mode),
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Optional.ofNullable(description))
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}
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@JvmStatic
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private fun parseUTCDate(string: String): Date {
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return try {
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UTCUtil.parseUTCDate(string)
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} catch (e: ParseException) {
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throw IllegalArgumentException("Malformed UTC timestamp.", e)
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}
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}
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}
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}
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