Outlook 不顯示人員的 Teams 上線狀態

HKEY_CURRENT_USER\Software\IM Providers

Name: DefaultIMApp
Type: REG_SZ
Data: Teams

Reference: https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/teams-im-presence/issues-with-presence-in-outlook

[PHP] Check if Client IP within CIDR

 if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
    $ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
    $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
    $ip = $_SERVER['REMOTE_ADDR'];
};

if (cidr_match($ip,"192.168.0.0/16") == True) {
echo "hit";
} else {
echo "pass";
};

function cidr_match($ip, $range) {
    list ($subnet, $bits) = explode('/', $range);
    if ($bits === null) {
        $bits = 32;
    }
    $ip = ip2long($ip);
    $subnet = ip2long($subnet);
    $mask = -1 << (32 - $bits);
    $subnet &= $mask; # nb: in case the supplied subnet wasn't correctly aligned
    return ($ip & $mask) == $subnet;
};

Origin: https://stackoverflow.com/questions/594112/check-whether-or-not-a-cidr-subnet-contains-an-ip-address

PHP 陣列 index 與 value 改小寫

$Array['INDEX'] = 'VALUE';

// index
$Array = array_change_key_case_recursive($Array ,CASE_LOWER);

// value
$Array = array_map('nestedLowercase', $Array );

=>

$Array['index'] = 'value';

URL Parsing by PowerShell

URL Parsing by PowerShell

$URL = "https://api.contoso.com/level1/level2/Script.php?index=1&page=2&content=3";
$URI = [System.Uri]$URL;

Add-Type -AssemblyName System.Web;
$ParsedQueryString = [System.Web.HttpUtility]::ParseQueryString($URI.Query);
$QueryParams = New-Object -TypeName PSObject;
$i=0;
foreach($QueryStringObject in $ParsedQueryString){
    $QueryParams | Add-Member -MemberType NoteProperty -Name $QueryStringObject -Value $ParsedQueryString[$i];
    $i++;
};

$URI | fl;
$QueryParams.PSObject.Properties.Name;
$QueryParams;

OpenSSL 憑證處理遇到 unsupported encryption algorithm

openssl pkcs12 -in "www.Contoso.com.pfx"
=> unsupported encryption algorithm (RC2-40-CBC)

=> openssl pkcs12 -in "$1" -legacy

參考資料:
https://github.com/openssl/openssl/discussions/23089

Link User to Existed Exchange Online Mailbox

Powershell Exchange Online

Get-Mailbox UserName | fl ExchangeGuid    #取得 ExchangeGuid

PowerShell On-Premises

Enable-RemoteMailbox UserName -RemoteRoutingAddress  UserName@YourDomain.mail.onmicrosoft.com
Set-RemoteMailbox UserName -ExchangeGuid <ExchangeGuid from above>

如果是 Shared Mailbox, Enable-RemoteMailbox 指令加上 -Shared 參數

參考資料:
https://www.itpromentor.com/link-aduser-365/

以 ffmpeg 批次降低影片 bitrate

運動攝影機錄影擋預設流量 (bitrate) 很高，但其實我覺得看不太出來高低流量畫質的差異
所以根據網路查的一些建議用 ffmpeg 批次處理降低流量
先用 ffprobe.exe 取得影片屬性，再根據影片屬性進行處理

以下 Powershell 中，VideoRotation 是影片方向的資訊，在降低流量的處理中實際上不需要
這裡只是當作筆記用，未來有需要的時候才找得到 (找很久才找到這個語法)

#設定要降低的 bitrate 值 Start
$ProcessMethod = @();
$ProcessMethod += New-Object -TypeName PSObject -Property @{
     Width = 2688;
     FrameRate = 30;
     BitRate = 16;
};
$ProcessMethod += New-Object -TypeName PSObject -Property @{
     Width = 2688;
     FrameRate = 60;
     BitRate = 24;
};
$ProcessMethod += New-Object -TypeName PSObject -Property @{
     Width = 3840;
     FrameRate = 30;
     BitRate = 45;
};
$ProcessMethod += New-Object -TypeName PSObject -Property @{
     Width = 3840;
     FrameRate = 60;
     BitRate = 55;
};
$ProcessMethod += New-Object -TypeName PSObject -Property @{
     Width = 3840;
     FrameRate = 120;
     BitRate = 65;
};
#設定要降低的 bitrate 值End

360 全景影片加入 Metadata Tag

全景影片用 VLC 等媒體播放軟體播放時若預設不以全景模式播放代表缺少 Metadata Tag
解決辦法如下，如果檔案量少，可以直接用 GUI 程式處理，檔案多的話跑批次比較省事

GUI & Source: google spatial-media
https://github.com/google/spatial-media/releases

Command 需要 python 2.7 (新版不行)
根據影片類型可能要加入 StereoMode 參數，請自行參考程式說明
先轉轉看確認參數再跑批次

Set-Location -Path "D:\Software\spatial-media-2.1\";
$Files = (Get-ChildItem -Path 'D:\Video' -File)
foreach ($File in $Files) {
& D:\Python27\python.exe spatialmedia -i $File.FullName ($File.FullName -Replace $File.BaseName,($File.BaseName + '_360 Tag Added'));
#if (($File.FullName -Replace $File.BaseName,($File.BaseName + '_360 Tag Added')) -eq $True) {
# remove-item -path $File.FullName -force;
#};
};

技術細節可 Google 關鍵字: Inject 360 Metadata

Shrink MS SQL LDF File

ALTER DATABASE [DBName] SET RECOVERY SIMPLE;
dbcc shrinkfile(DBName_log, 1);
ALTER DATABASE [DBName] SET RECOVERY FULL;

參考資料:
https://sdwh.dev/posts/2021/03/SQL-Server-LDF-Truncate-Shrink/

Windows TCP Port Forwarding

古時候 (2000年左右) Windows 98 時代對於網路不太熟悉

有接觸到一個小程式叫做 PortMagicV130 (網路魔術師)

可以做到 Port Forwarding 的功能，也就是將電腦作為跳板的用途

現在只要下指令就可以做到了:

netsh interface portproxy add v4tov4 listenport=80 listenaddress=192.168.1.10 connectport=80 connectaddress=1.1.1.1

紅色的部分 是本機電腦要聽的 Port 與  IP

綠色的部分 是要轉去目標的 Port 與  IP

用這個指令可以查目前的設定:

netsh interface portproxy show all

這樣刪除

netsh interface portproxy delete v4tov4 listenport=80 listenaddress=192.168.1.10
或
netsh interface portproxy delete listenport=80 listenaddress=192.168.1.10

參考資料:

https://stackoverflow.com/questions/11525703/port-forwarding-in-windows

https://redfishiaven.medium.com/port-forwarding-in-windows-and-ways-to-set-it-up-c337e171086f