mirror of https://github.com/M66B/FairEmail.git
258 lines
8.4 KiB
Java
258 lines
8.4 KiB
Java
package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2020 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.os.Build;
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import android.text.TextUtils;
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import android.webkit.MimeTypeMap;
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import androidx.annotation.NonNull;
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import androidx.room.Entity;
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import androidx.room.ForeignKey;
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import androidx.room.Index;
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import androidx.room.PrimaryKey;
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import java.io.File;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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import java.util.Objects;
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import javax.mail.Part;
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import static androidx.room.ForeignKey.CASCADE;
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@Entity(
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tableName = EntityAttachment.TABLE_NAME,
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foreignKeys = {
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@ForeignKey(childColumns = "message", entity = EntityMessage.class, parentColumns = "id", onDelete = CASCADE)
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},
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indices = {
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@Index(value = {"message"}),
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@Index(value = {"message", "sequence"}, unique = true),
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@Index(value = {"message", "cid"})
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}
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)
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public class EntityAttachment {
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static final String TABLE_NAME = "attachment";
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static final Integer PGP_MESSAGE = 1;
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static final Integer PGP_SIGNATURE = 2;
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static final Integer PGP_KEY = 3;
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static final Integer PGP_CONTENT = 4;
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static final Integer SMIME_MESSAGE = 5;
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static final Integer SMIME_SIGNATURE = 6;
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static final Integer SMIME_SIGNED_DATA = 7;
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static final Integer SMIME_CONTENT = 8;
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// https://developer.android.com/guide/topics/media/media-formats#image-formats
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private static final List<String> IMAGE_TYPES = Collections.unmodifiableList(Arrays.asList(
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"image/bmp",
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"image/gif",
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"image/jpeg",
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"image/jpg",
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"image/png",
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"image/webp"
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));
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private static final List<String> IMAGE_TYPES8 = Collections.unmodifiableList(Arrays.asList(
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"image/heic",
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"image/heif"
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));
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@PrimaryKey(autoGenerate = true)
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public Long id;
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@NonNull
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public Long message;
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@NonNull
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public Integer sequence;
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public String name;
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@NonNull
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public String type;
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public String disposition;
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public String cid; // Content-ID
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public Integer encryption;
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public Long size;
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public Integer progress;
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@NonNull
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public Boolean available = false;
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public String error;
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// Gmail sends inline images as attachments with a name and cid
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boolean isInline() {
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return (Part.INLINE.equals(disposition) || cid != null);
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}
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boolean isAttachment() {
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return (Part.ATTACHMENT.equals(disposition) || !TextUtils.isEmpty(name));
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}
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boolean isImage() {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
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if (IMAGE_TYPES8.contains(getMimeType()))
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return true;
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return IMAGE_TYPES.contains(getMimeType());
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}
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boolean isEncryption() {
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return (encryption != null);
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}
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File getFile(Context context) {
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return getFile(context, id, name);
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}
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static File getFile(Context context, long id, String name) {
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File dir = new File(context.getFilesDir(), "attachments");
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if (!dir.exists())
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dir.mkdir();
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String filename = Long.toString(id);
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if (!TextUtils.isEmpty(name))
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filename += "." + Helper.sanitizeFilename(name);
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if (filename.length() > 127)
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filename = filename.substring(0, 127);
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return new File(dir, filename);
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}
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static void copy(Context context, long oldid, long newid) {
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DB db = DB.getInstance(context);
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List<EntityAttachment> attachments = db.attachment().getAttachments(oldid);
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for (EntityAttachment attachment : attachments) {
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File source = attachment.getFile(context);
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long aid = attachment.id;
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attachment.id = null;
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attachment.message = newid;
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attachment.progress = null;
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attachment.id = db.attachment().insertAttachment(attachment);
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if (attachment.available) {
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File target = attachment.getFile(context);
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try {
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Helper.copy(source, target);
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} catch (IOException ex) {
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Log.e(ex);
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db.attachment().setError(aid, Log.formatThrowable(ex, false));
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db.attachment().setError(attachment.id, Log.formatThrowable(ex, false));
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}
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}
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}
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}
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String getMimeType() {
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// Try to guess a better content type
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// For example, sometimes PDF files are sent as application/octet-stream
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// https://android.googlesource.com/platform/libcore/+/refs/tags/android-9.0.0_r49/luni/src/main/java/libcore/net/MimeUtils.java
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// https://blogs.msdn.microsoft.com/vsofficedeveloper/2008/05/08/office-2007-file-format-mime-types-for-http-content-streaming-2/
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if (encryption != null)
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return type;
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String extension = Helper.getExtension(name);
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if (extension == null)
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return type;
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String gtype = MimeTypeMap.getSingleton()
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.getMimeTypeFromExtension(extension.toLowerCase(Locale.ROOT));
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if (gtype != null) {
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if (TextUtils.isEmpty(type) || "*/*".equals(type))
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type = gtype;
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// Some servers erroneously remove dots from mime types
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if (gtype.replace(".", "").equals(type))
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type = gtype;
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}
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if ("csv".equals(extension))
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return "text/csv";
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if ("eml".equals(extension))
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return "message/rfc822";
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if ("gpx".equals(extension))
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return "application/gpx+xml";
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if ("text/plain".equals(type) && "ics".equals(extension))
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return "text/calendar";
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if ("text/plain".equals(type) && "ovpn".equals(extension))
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return "application/x-openvpn-profile";
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if ("application/x-pdf".equals(type))
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return "application/pdf";
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if ("application/vnd.ms-pps".equals(type))
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return "application/vnd.ms-powerpoint";
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if (TextUtils.isEmpty(type) ||
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type.startsWith("unknown/") || type.endsWith("/unknown") ||
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"application/octet-stream".equals(type) || "application/zip".equals(type)) {
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if ("log".equalsIgnoreCase(extension))
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return "text/plain";
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if (gtype == null || gtype.equals(type))
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return type;
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Log.w("Guessing file=" + name + " type=" + gtype);
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return gtype;
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}
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return type;
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}
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@Override
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public boolean equals(Object obj) {
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if (obj instanceof EntityAttachment) {
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EntityAttachment other = (EntityAttachment) obj;
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return (this.message.equals(other.message) &&
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this.sequence.equals(other.sequence) &&
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Objects.equals(this.name, other.name) &&
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this.type.equals(other.type) &&
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Objects.equals(this.disposition, other.disposition) &&
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Objects.equals(this.cid, other.cid) &&
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Objects.equals(this.encryption, other.encryption) &&
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Objects.equals(this.size, other.size) &&
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Objects.equals(this.progress, other.progress) &&
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this.available.equals(other.available) &&
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Objects.equals(this.error, other.error));
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} else
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return false;
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}
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@NonNull
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@Override
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public String toString() {
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return (this.name +
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" type=" + this.type +
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" disposition=" + this.disposition +
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" cid=" + this.cid +
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" encryption=" + this.encryption +
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" size=" + this.size);
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}
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}
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