Emcode.Pst.Libs 1.0.4

Emcode.Pst

Library C# untuk membaca file Microsoft Outlook PST (Personal Storage Table) dengan fokus pada read MVP dan fondasi untuk pengembangan write.

Kemampuan Saat Ini

• Membuka PST ANSI/Unicode dan membaca metadata header (format, versi, ukuran, metode crypt).
• Membaca hierarki folder (root + subfolder) dari NDB.
• Membaca message per folder menggunakan Contents Table (urutan sesuai tabel bila tersedia).
• Mengambil properti message inti dan extended (mis. Subject, DeliveryTime, SenderName, Body, HtmlBody, message flags, receipt flags, importance/priority/sensitivity, conversation topic/index, transport headers).
• Membaca metadata attachment dan konten attachment sebagai Stream/byte[] bila tersedia.
• Mendukung API sinkron PstFile.Open dan asinkron PstFile.OpenAsync.
• Mendukung write draft (in-memory dan persist ke disk) untuk create folder/message, import .eml berbasis path file, serta mapping MAPI draft yang mencakup PidTagMessageClass, PidTagMessageFlags, timestamp utama, conversation topic/index, transport headers, receipt flags, importance/priority/sensitivity, dan properti recipient tambahan (DisplayName, AddrType).

Quick Start (Sync)

using Emcode.Pst.Application;

var pst = PstFile.Open(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = true,
    ValidateChecksums = false
});

Console.WriteLine($"Folders: {pst.Folders.Count}");

foreach (var folder in pst.Folders)
{
    Console.WriteLine($"- {folder.Name} ({folder.Messages.Count} messages)");
    foreach (var message in folder.Messages)
    {
        Console.WriteLine($"  {message.Subject} | {message.SenderName}");
    }
}

Quick Start (Async)

using System.Threading;
using Emcode.Pst.Application;

using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
var pst = await PstFile.OpenAsync(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = true,
    ValidateChecksums = false
}, cancellationToken: cts.Token);

Membaca Konten Attachment (Sync)

using System.IO;
using System.Linq;
using Emcode.Pst.Application;

var pst = PstFile.Open(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = true,
    ValidateChecksums = false
});

foreach (var message in pst.Folders.SelectMany(folder => folder.Messages))
{
    foreach (var attachment in message.Attachments)
    {
        var bytes = attachment.ReadContentBytes();
        if (bytes is null)
        {
            continue;
        }

        var fileName = attachment.LongFileName ?? attachment.FileName ?? "attachment.bin";
        var targetPath = Path.Combine(@"C:\export", fileName);
        File.WriteAllBytes(targetPath, bytes);
    }
}

Membaca Konten Attachment (Async)

using System.IO;
using System.Linq;
using Emcode.Pst.Application;

using var pst = await PstFile.OpenAsync(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = true,
    ValidateChecksums = false
});

foreach (var message in pst.Folders.SelectMany(folder => folder.Messages))
{
    foreach (var attachment in message.Attachments)
    {
        await using var content = await attachment.OpenContentStreamAsync();
        if (content is null)
        {
            continue;
        }

        var fileName = attachment.LongFileName ?? attachment.FileName ?? "attachment.bin";
        var targetPath = Path.Combine(@"C:\export", fileName);
        await using var file = File.Create(targetPath);
        await content.CopyToAsync(file);
    }
}

Catatan: konten attachment dibaca dari PidTagAttachDataBinary. Attachment bertipe pesan (PidTagAttachDataObject) belum didukung.

Menulis Draft (In-Memory)

using Emcode.Pst.Application;
using Emcode.Pst.Domain;
using Emcode.Pst.Infrastructure;

var pst = PstFile.Open(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = false,
    ValidateChecksums = false
}, writer: new PstInMemoryWriter());

var drafts = pst.Folders.FirstOrDefault(f => f.Name == "Drafts") ?? pst.RootFolder!;
var draft = new PstMessageDraft
{
    FromName = "Tester",
    FromAddress = "tester@example.com",
    Subject = "Draft Manual",
    Body = "Halo dari draft",
    HtmlBody = "<b>Halo dari draft</b>",
    Recipients = new[]
    {
        new PstDraftRecipient { RecipientType = PstRecipientType.To, EmailAddress = "target@example.com" }
    }
};

var message = pst.CreateMessage(drafts, draft);

Menulis Draft (Persist ke Disk)

using Emcode.Pst.Application;
using Emcode.Pst.Domain;
using Emcode.Pst.Infrastructure.Ndb;

using var pst = PstFile.Open(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = false,
    ValidateChecksums = false
}, writer: new PstNdbWriter());

var targetFolder = pst.Folders.First();
var draft = new PstMessageDraft
{
    Subject = "Draft Persist",
    Body = "Konten disimpan ke PST",
    Recipients = new[]
    {
        new PstDraftRecipient { RecipientType = PstRecipientType.To, EmailAddress = "target@example.com" }
    }
};

var message = pst.CreateMessage(targetFolder, draft);

Import .eml (In-Memory)

using Emcode.Pst.Application;
using Emcode.Pst.Infrastructure;

var pst = PstFile.Open(@"C:\data\mail.pst", new PstOpenOptions
{
    ReadOnly = false,
    ValidateChecksums = false
}, writer: new PstInMemoryWriter());

var folder = pst.Folders.First();
var message = pst.ImportEml(folder, @"C:\data\mail.eml");

Matriks Fitur

• Open/Read PST (sync/async): Supported
• Create Folder/Message (in-memory): Supported
• Create Folder/Message (persist disk via PstNdbWriter): Supported (eksperimental)
• Import .eml dari path file (sync/async): Supported
• Import .eml dari Stream: Not Yet
• Update/Delete message (in-memory writer): Supported
• Update/Delete message (PstNdbWriter persist): Not Yet
• Attachment content read (sync/async): Supported
• Attachment message object (PidTagAttachDataObject): Not Yet
• Crypt method None/Permute: Supported
• Crypt method Cyclic/EdpEncrypted: Not Yet
• Data tree write di atas XXBLOCK: Not Yet

Opsi Pembukaan

• ReadOnly (default: true)
• ValidateChecksums (default: true)
• AllowAnsi (default: true)
• AllowUnicode (default: true)

Batasan Saat Ini

• PstNdbWriter sudah mendukung create folder/message dan persist ke disk, namun masih eksperimental.
• PC/TC writer masih single-block; data besar (body/attachment) bisa gagal jika melebihi ukuran block PST.
• Subnode attachment hanya disimpan bila ContentBytes tersedia.
• Update/delete message pada PstNdbWriter belum didukung (pada PstInMemoryWriter didukung).
• Update BBT/NBT dilakukan dengan append block baru (belum ada reuse free-space).
• Import .eml saat ini hanya mendukung input path file (string emlPath), belum mendukung input Stream.
• Import .eml via PstNdbWriter sudah mempersist ke disk dengan mapping MAPI draft yang lebih lengkap, namun belum mencakup seluruh properti Outlook tingkat lanjut.
• Method crypt Cyclic dan EdpEncrypted belum didukung.
• Writer data tree lebih dalam dari XXBLOCK belum didukung.
• Sinkronisasi folder lokal ke PST belum tersedia.

Roadmap (Goal Project)

• Intergrasi dengan NUGET.
• Buat pages batuan object references.
• Baca file PST (tersedia untuk read MVP).
• Buat folder import dan import file .eml ke folder tersebut.
• Sinkronisasi folder lokal dengan PST.

Referensi

• MS-PST: Outlook Personal Folders (.pst) File Format