Teams_utils.ps1
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# Gets Teams service information # Oct 16th 2020 function Get-TeamsUserSettings { [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken ) Process { # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -Resource "https://api.spaces.skype.com" -ClientId "1fec8e78-bce4-4aaf-ab1b-5451cc387264" Invoke-RestMethod -UseBasicParsing -Method Post -Uri "https://teams.microsoft.com/api/authsvc/v1.0/authz" -Headers @{"Authorization"="Bearer $AccessToken"} } } # Gets Teams recipients info # May 11th 2021 function Get-TeamsRecipients { [cmdletbinding()] Param( [Parameter(Mandatory=$False)] [String]$AccessToken, [Parameter(Mandatory=$True)] [String[]]$Recipients ) Process { # Get from cache if not provided $AccessToken = Get-AccessTokenFromCache -AccessToken $AccessToken -Resource "https://api.spaces.skype.com" -ClientId "1fec8e78-bce4-4aaf-ab1b-5451cc387264" # Must be a proper array, so add element if only one provided if($Recipients.Count -eq 1) { $Recipients += "" } # Get the settings $teamsSettings = Get-TeamsUserSettings -AccessToken $AccessToken $chatService = $teamsSettings.regionGtms.chatService $apiUrl = $teamsSettings.regionGtms.middleTier $skypeToken = $teamsSettings.tokens.SkypeToken # Construct the headers $headers = @{ "Authorization" = "Bearer $AccessToken" "User-Agent" = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Teams/1.3.00.24755 Chrome/69.0.3497.128 Electron/4.2.12 Safari/537.36" "Authentication" = "skypetoken=$skypeToken" "x-ms-client-version" = "27/1.0.0.2020101241" } $recipientInfo = Invoke-RestMethod -UseBasicParsing -Method Post -Uri "$apiUrl/beta/users/fetch?isMailAddress=true&canBeSmtpAddress=false&enableGuest=true&includeIBBarredUsers=true&skypeTeamsInfo=true" -Headers $headers -Body ([String[]]$Recipients|ConvertTo-Json) -ContentType "application/json" $msgRecipients = $recipientInfo.Value return $msgRecipients } } |