Files
duplicati/proprietary/GoogleWorkspace/SourceItems/GmailMessageSourceEntry.cs
T
Kenneth Skovhede 910c56b3c4 Reworked the use of scopes.
Instead of requesting all scopes up front, each sub-section of the backup/restore will request the permissions that are relevant for the operation.

The effect is that it is not required to grant all permissions to get a backup running. If permissions are failing, that part of the backup will generate warnings for items that are excluded.
2026-02-15 22:03:57 +01:00

53 lines
2.3 KiB
C#

// Copyright (c) 2026 Duplicati Inc. All rights reserved.
using Duplicati.Library.Common.IO;
using Google.Apis.Gmail.v1.Data;
using Google.Apis.Gmail.v1;
namespace Duplicati.Proprietary.GoogleWorkspace.SourceItems;
internal class GmailMessageSourceEntry(string userId, string parentPath, Message message, GmailService service)
: StreamResourceEntryBase(SystemIO.IO_OS.PathCombine(parentPath, message.Id + ".eml"),
message.InternalDate.HasValue ? DateTimeOffset.FromUnixTimeMilliseconds(message.InternalDate.Value).UtcDateTime : DateTime.UnixEpoch,
message.InternalDate.HasValue ? DateTimeOffset.FromUnixTimeMilliseconds(message.InternalDate.Value).UtcDateTime : DateTime.UnixEpoch)
{
public override long Size => message.SizeEstimate ?? 0;
public override async Task<Stream> OpenRead(CancellationToken cancellationToken)
{
var request = service.Users.Messages.Get(userId, message.Id);
request.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Raw;
var msg = await request.ExecuteAsync(cancellationToken);
// Raw is base64url encoded string
var bytes = FromBase64Url(msg.Raw);
return new MemoryStream(bytes);
}
private static byte[] FromBase64Url(string base64Url)
{
string padded = base64Url.Length % 4 == 0
? base64Url
: base64Url + new string('=', 4 - base64Url.Length % 4);
string base64 = padded.Replace('-', '+').Replace('_', '/');
return Convert.FromBase64String(base64);
}
public override Task<Dictionary<string, string?>> GetMinorMetadata(CancellationToken cancellationToken)
{
var subject = message.Payload?.Headers?.FirstOrDefault(h => h.Name?.Equals("Subject", StringComparison.OrdinalIgnoreCase) == true)?.Value;
return Task.FromResult(new Dictionary<string, string?>
{
{ "gsuite:v", "1" },
{ "gsuite:Type", SourceItemType.GmailMessage.ToString() },
{ "gsuite:Name", string.IsNullOrWhiteSpace(subject) ? message.Id : subject },
{ "gsuite:Id", message.Id },
{ "gsuite:ThreadId", message.ThreadId },
{ "gsuite:Snippet", message.Snippet },
}
.Where(kv => !string.IsNullOrEmpty(kv.Value))
.ToDictionary(kv => kv.Key, kv => kv.Value));
}
}