monkey365

0.95.1

collectors/microsoft365/SharePointOnline/Get-MonkeySharePointOnlineExternalLink.ps1

# Monkey365 - the PowerShell Cloud Security Tool for Azure and Microsoft 365 (copyright 2022) by Juan Garrido
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


function Get-MonkeySharePointOnlineExternalLink {
<#
        .SYNOPSIS
        Collector to get information about O365 Sharepoint Online external links
 
        .DESCRIPTION
        Collector to get information about O365 Sharepoint Online external links
 
        .INPUTS
 
        .OUTPUTS
 
        .EXAMPLE
 
        .NOTES
            Author : Juan Garrido
            Twitter : @tr1ana
            File Name : Get-MonkeySharePointOnlineExternalLink
            Version : 1.0
 
        .LINK
            https://github.com/silverhack/monkey365
    #>

    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $false,HelpMessage = "Background Collector ID")]
        [string]$collectorId
    )
    Begin {
        #Collector metadata
        $monkey_metadata = @{
            Id = "sps0001";
            Provider = "Microsoft365";
            Resource = "SharePointOnline";
            ResourceType = $null;
            resourceName = $null;
            collectorName = "Get-MonkeySharePointOnlineExternalLink";
            ApiType = "CSOM";
            description = "Collector to get information about O365 Sharepoint Online external links";
            Group = @(
                "SharePointOnline"
            );
            Tags = @(

            );
            references = @(
                "https://silverhack.github.io/monkey365/"
            );
            ruleSuffixes = @(
                "o365_spo_sharing_links"
            );
            dependsOn = @(

            );
            enabled = $true;
            supportClientCredential = $true
        }
        #Get config
        Try {
            #Splat params
            $pWeb = @{
                Authentication = $O365Object.auth_tokens.SharePointOnline;
                Recurse = [System.Convert]::ToBoolean($O365Object.internal_config.o365.SharePointOnline.Subsites.Recursive);
                Limit = $O365Object.internal_config.o365.SharePointOnline.Subsites.Depth;
                InformationAction = $O365Object.InformationAction;
                Verbose = $O365Object.Verbose;
                Debug = $O365Object.Debug;
            }
            #Splat params
            $pExternal = @{
                Authentication = $O365Object.auth_tokens.SharePointOnline;
                Filter = $O365Object.internal_config.o365.SharePointOnline.SharingLinks.Include;
                InformationAction = $O365Object.InformationAction;
                Verbose = $O365Object.Verbose;
                Debug = $O365Object.Debug;
            }

        }
        Catch {
            $msg = @{
                MessageData = ($message.MonkeyInternalConfigError);
                callStack = (Get-PSCallStack | Select-Object -First 1);
                logLevel = 'verbose';
                InformationAction = $O365Object.InformationAction;
                Tags = @('Monkey365ConfigError');
            }
            Write-Verbose @msg
            #Splat params
            $pWeb = @{
                Authentication = $O365Object.auth_tokens.SharePointOnline
                InformationAction = $O365Object.InformationAction;
                Verbose = $O365Object.Verbose;
                Debug = $O365Object.Debug;
            }
            #Splat params
            $pExternal = @{
                Authentication = $O365Object.auth_tokens.SharePointOnline;
                InformationAction = $O365Object.InformationAction;
                Verbose = $O365Object.Verbose;
                Debug = $O365Object.Debug;
            }
        }
        #Set generic list
        $all_sharing_links = [System.Collections.Generic.List[System.Object]]::new()
        $allWebs = [System.Collections.Generic.List[System.Object]]::new()
        $abort = $true
    }
    process {
        If ($null -ne $O365Object.spoSites) {
            #Set abort to false
            $abort = $false
            #set message
            $msg = @{
                MessageData = ($message.MonkeyGenericTaskMessage -f $collectorId,"SharePoint Online sharing links",$O365Object.TenantID);
                callStack = (Get-PSCallStack | Select-Object -First 1);
                logLevel = 'info';
                InformationAction = $O365Object.InformationAction;
                Tags = @('SPSSharingLinkInfo');
            }
            Write-Information @msg
            @($O365Object.spoSites).ForEach(
                {
                    $_Web = $_.url | Get-MonkeyCSOMWeb @pWeb;
                    if ($_Web) {
                        [void]$allWebs.Add($_Web);
                    }
                }
            )
            $sharingLinks = $allWebs.GetEnumerator() | Get-MonkeyCSOMExternalLink @pExternal
            foreach ($eLink in @($sharingLinks)) {
                [void]$all_sharing_links.Add($eLink);
            }
        }
    }
    End {
        If($abort -eq $false){
            If ($all_sharing_links) {
                $all_sharing_links.PSObject.TypeNames.Insert(0,'Monkey365.SharePoint.SharingLinks')
                [pscustomobject]$obj = @{
                    Data = $all_sharing_links;
                    Metadata = $monkey_metadata;
                }
                $returnData.o365_spo_sharing_links = $obj
            }
            Else {
                $msg = @{
                    MessageData = ($message.MonkeyEmptyResponseMessage -f "SharePoint Online sharing links",$O365Object.TenantID);
                    callStack = (Get-PSCallStack | Select-Object -First 1);
                    logLevel = "verbose";
                    InformationAction = $O365Object.InformationAction;
                    Verbose = $O365Object.Verbose;
                    Tags = @('SPSSharingLinkEmptyResponse');
                }
                Write-Verbose @msg
            }
        }
    }
}