Add cross-platform install docs to README

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mikisoq
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# AD Bulk Tool prototype
# AD Bulk Tool
A small Avalonia + C# prototype for bulk Active Directory edits from a CSV.
Cross-platform Avalonia UI app for bulk Active Directory operations from a CSV file.
## What it currently does
## Prerequisites
- Load a CSV file.
- Show all CSV headers in a human-readable dropdown, including duplicate column names as `1: Name`, `2: Name`, etc.
- Select one of these actions:
- Disable user
- Enable user
- Add to group
- Remove from group
- Set random password
- Set password change at next login
- Set random password + change at next login
- Preview changes locally.
- Run a real AD dry run that binds to LDAP/LDAPS and validates users.
- Execute changes against AD.
- Test DNS, TCP 389, TCP 636, LDAP bind on 389, and LDAPS bind on 636 before running a job.
- Use two presets:
- `Use LDAP 389 (normal edits)`
- `Use LDAPS 636 (password edits)`
- [.NET 8 SDK](https://dotnet.microsoft.com/download/dotnet/8.0)
## Important safety notes
### Windows
- Test with a dedicated test OU and test accounts first.
- Leave `Dry run` enabled until you are sure the mapping is correct.
- Normal edits such as enable, disable, add to group, and remove from group can use LDAP 389.
- Password reset actions require LDAPS 636 and are blocked if LDAP 389 is selected.
- `Set password change at next login` sets `pwdLastSet=0`; it does not generate a new password.
- Do not use `Ignore cert errors` in production. Install your internal root CA on the Linux machine instead.
- The prototype shows generated passwords in the result list. Treat the screen as sensitive.
```powershell
winget install Microsoft.DotNet.SDK.8
```
## Run
### Linux (Arch / CachyOS)
```bash
sudo pacman -S dotnet-sdk-8.0
```
### Linux (Ubuntu / Debian)
```bash
# Register Microsoft repository, then:
sudo apt install dotnet-sdk-8.0
```
### macOS
```bash
brew install dotnet-sdk-8.0
```
## Build & Run
```bash
git clone https://gitea.mikisoq.cc/mikisoq/ADBulk.git
cd ADBulk
dotnet restore
dotnet build
dotnet run
```
## Typical values
On Windows, you can also open the folder in Visual Studio and run from there.
For normal edits:
## Features
```text
LDAP host: [DomainController hostname]
Port: 389
Use LDAPS: unchecked
Search base DN: DC=Your,DC=domain
Bind username: Your\your-admin-user or your-admin-user@YourDomain
```
- Load a CSV with any column structure
- Auto-discover the AD domain and domain controller via DNS (click **Discover** or runs on startup)
- Supports LDAP 389 (normal edits) and LDAPS 636 (password resets)
- Built-in port/connectivity health check
- Dry-run mode to validate before making changes
- Actions: enable, disable, add/remove from group, set/force password change
For password reset actions:
## Quick start
```text
LDAP host: [DomainController hostname]
Port: 636
Use LDAPS: checked
Search base DN: DC=Your,DC=domain
Bind username: Your\your-admin-user or your-admin-user@YourDomain
```
1. Launch the app
2. Click **Discover** (or let it auto-detect on startup)
3. Enter your AD bind username and password
4. Click **Test ports + LDAP/LDAPS** to verify connectivity
5. Load a CSV
6. Select the username column and an action
7. Run **Preview** then **Dry run** before executing
## Recommended test order
## Safety
1. Enter host, search base, bind username, and bind password.
2. Click `Test ports + LDAP/LDAPS`.
3. Confirm whether LDAP 389 works.
4. Confirm whether LDAPS 636 works.
5. Load a tiny CSV with test users.
6. Run `Preview`.
7. Run with `Dry run` checked.
8. Only then run without `Dry run`.
- Test with a dedicated test OU and test accounts first
- Keep **Dry run** enabled until you are sure the mapping is correct
- Password reset actions require LDAPS and are blocked on plain LDAP
- Do not use **Ignore cert errors** in production
## Linux LDAPS trust
## LDAPS certificate trust
For proper LDAPS, your Linux machine must trust the CA that issued the domain controller LDAP certificate.
On Arch/CachyOS, this is commonly done by placing your root CA certificate under `/etc/ca-certificates/trust-source/anchors/` and running:
### Linux
Place your root CA certificate and run:
```bash
# Arch / CachyOS
sudo cp your-root-ca.crt /etc/ca-certificates/trust-source/anchors/
sudo trust extract-compat
# Ubuntu / Debian
sudo cp your-root-ca.crt /usr/local/share/ca-certificates/
sudo update-ca-certificates
```
Exact CA trust commands depend on your Linux distribution.
### Windows
If the domain controller certificate is already trusted by the domain, nothing extra is needed. Otherwise, import the root CA into the **Trusted Root Certification Authorities** store.