h2CiZp4Q

1function Generate-JWT (
2    [Parameter(Mandatory = $True)]
3    [ValidateSet("HS256", "HS384", "HS512")]
4    $Algorithm = $null,
5    $type = $null,
6    [Parameter(Mandatory = $True)]
7    [string]$Issuer = $null,
8    [int]$ValidforSeconds = $null,
9    [Parameter(Mandatory = $True)]
10    $SecretKey = $null
11    ){
12
13    $exp = [int][double]::parse((Get-Date -Date $((Get-Date).addseconds($ValidforSeconds).ToUniversalTime()) -UFormat %s)) # Grab Unix Epoch Timestamp and add desired expiration.
14
15    [hashtable]$header = @{alg = $Algorithm; typ = $type}
16    [hashtable]$payload = @{iss = $Issuer; exp = $exp}
17
18    $headerjson = $header | ConvertTo-Json -Compress
19    $payloadjson = $payload | ConvertTo-Json -Compress
20    
21    $headerjsonbase64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($headerjson)).Split('=')[0].Replace('+', '-').Replace('/', '_')
22    $payloadjsonbase64 = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payloadjson)).Split('=')[0].Replace('+', '-').Replace('/', '_')
23
24    $ToBeSigned = $headerjsonbase64 + "." + $payloadjsonbase64
25
26    $SigningAlgorithm = switch ($Algorithm) {
27        "HS256" {New-Object System.Security.Cryptography.HMACSHA256}
28        "HS384" {New-Object System.Security.Cryptography.HMACSHA384}
29        "HS512" {New-Object System.Security.Cryptography.HMACSHA512}
30    }
31
32    $SigningAlgorithm.Key = [System.Text.Encoding]::UTF8.GetBytes($SecretKey)
33    $Signature = [Convert]::ToBase64String($SigningAlgorithm.ComputeHash([System.Text.Encoding]::UTF8.GetBytes($ToBeSigned))).Split('=')[0].Replace('+', '-').Replace('/', '_')
34    
35    $token = "$headerjsonbase64.$payloadjsonbase64.$Signature"
36    $token
37}
38
39$api_key = ''
40$api_secret = ''
41
42Generate-JWT -Algorithm 'HS256' -type 'JWT' -Issuer $api_key -SecretKey $api_secret -ValidforSeconds 30   
43
44# Generate JWT for use in API calls.
45$token = Generate-JWT -Algorithm 'HS256' -type 'JWT' -Issuer $api_key -SecretKey $api_secret -ValidforSeconds 30
46
47# Generate Header for API calls.
48[string]$contentType = 'application/json'
49$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
50$headers.Add('Content-Type' , $contentType)
51$headers.Add('Authorization','Bearer ' + $token)    
52 
53# Pull all API device data.
54$query_result = Invoke-RestMethod -Uri "$base_uri/metrics/zoomrooms?page_size=300&page_number=$page_number" -Headers $headers -Method GET