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Verify signed-only messages

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M66B
2019-11-30 16:48:20 +01:00
parent dc087220b9
commit 7c8e05acdf
2 changed files with 23 additions and 7 deletions
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28
app/src/main/java/eu/faircode/email/MessageHelper.java
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@@ -32,6 +32,7 @@ import org.jsoup.nodes.Document;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
@@ -53,6 +54,7 @@ import java.util.Map;
import java.util.Objects;
import java.util.Properties;
import java.util.TimeZone;
import java.util.regex.Pattern;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
@@ -1171,9 +1173,25 @@ public class MessageHelper {
db.attachment().setProgress(local.id, null);
if (EntityAttachment.PGP_CONTENT.equals(apart.encrypt)) {
ContentType ct = new ContentType(apart.part.getContentType());
String boundary = ct.getParameter("boundary");
if (TextUtils.isEmpty(boundary))
throw new ParseException("Signed boundary missing");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
apart.part.writeTo(bos);
String raw = new String(bos.toByteArray());
String[] parts = raw.split("\\r?\\n" + Pattern.quote("--" + boundary) + "\\r?\\n");
if (parts.length < 2)
throw new ParseException("Signed part missing");
String c = parts[1]
.replaceAll(" +$", "") // trim trailing spaces
.replace("\\r?\\n", "\\r\\n"); // normalize new lines
try (OutputStream os = new FileOutputStream(file)) {
apart.part.writeTo(os);
os.write(c.getBytes());
}
db.attachment().setDownloaded(local.id, file.length());
} else
try (InputStream is = apart.part.getInputStream()) {
@@ -1263,7 +1281,7 @@ public class MessageHelper {
}
try {
if (imessage.isMimeType("_multipart/signed_")) {
if (imessage.isMimeType("multipart/signed")) {
Multipart multipart = (Multipart) imessage.getContent();
if (multipart.getCount() == 2) {
getMessageParts(multipart.getBodyPart(0), parts, null);
@@ -1273,15 +1291,15 @@ public class MessageHelper {
apart.disposition = Part.INLINE;
apart.filename = "content.asc";
apart.encrypt = EntityAttachment.PGP_CONTENT;
apart.part = multipart.getBodyPart(0);
apart.part = imessage;
ContentType ct = new ContentType(apart.part.getContentType());
ContentType ct = new ContentType(multipart.getBodyPart(0).getContentType());
apart.attachment = new EntityAttachment();
apart.attachment.disposition = apart.disposition;
apart.attachment.name = apart.filename;
apart.attachment.type = ct.getBaseType().toLowerCase(Locale.ROOT);
apart.attachment.size = (long) apart.part.getSize();
apart.attachment.size = getSize();
apart.attachment.encryption = apart.encrypt;
parts.attachments.add(apart);