new Discord powershell script.

.gitignore

@@ -1,5 +1,6 @@
 /log/singleton.log
 /config.sh
+/Config.ps1
 /crons/*.status
 /distinct/*.msg
 /git-prompt.sh

Discord.ps1

@@ -0,0 +1,88 @@
+###############
+# Discord.ps1 #
+###############
+#
+# Windows Powershell Script for logging to Discord using a webhook intergration.
+# Just like the bash script, except it will use config.ps1 instead of config.sh.
+# Also supports skipping the send if the message is a duplicate.
+#
+# Script Parameters:
+# -message      <string>    (Pipeline) The message you want to log into discord.
+# [-distinct]   <string>    Optional, distinct name, will skip duplicate messages.
+# [-webhook]    <string>    Optional, Webhook URL, defaults to config.
+# [-botName]    <string>    Optional, Webhook Name, default to config.
+#
+### Example
+# Run from CMD or Batch file to transmit the message to Discord:
+# CMD> powershell.exe -File .\Discord.ps1 -message "Here is some content to send to Discord."
+# or pipeline in powershell:
+# PS1> echo "Here is some content to send to Discord" | .\Discord.ps1
+#
+# You can also pass the "-distinct" option to prevent duplicate messages:
+# PS1> echo "same message twice" | .\Discord.ps1 -distinct "my-key"
+# # message sent
+# PS1> echo "same message twice" | .\Discord.ps1 -distinct "my-key"
+# # duplicate message ignored
+#
+
+param (
+    [parameter (ValueFromPipeline = $true)] [string[]] $message,
+    [string] $distinct,
+    [string] $webhook,
+    [string] $botName
+)
+begin {
+    $chunk = ""
+    [string[]] $chunks = New-Object string[] 0
+
+    # load in defaults from config
+    $configFile = "$PSScriptRoot\\Config.ps1"
+    if (Test-Path -Path $configFile) {
+        . $configFile
+
+        if ( ! $webhook) {
+            $webhook = $DISCORD_WINDOWS_HOOK
+        }
+        if ( ! $botName) {
+            $botName = $DISCORD_SERVER_NAME
+        }
+    }
+
+    # load internal function
+    . "$PSScriptRoot\\SendDiscordChunk.ps1"
+}
+process {
+    # build up the full message
+    foreach ($line in $message) {
+        if ($chunk.length + $line.length -gt 1800) {
+            # if adding the line will make it too long, queue existing chunk and reset
+            $chunks += $chunk
+            $chunk = ""
+        }
+        $chunk += $line + "`n"
+    }
+}
+end {
+    # complete last chunk, by queuing it up
+    $chunks += $chunk
+
+    if ($distinct) {
+        $distinctFile = "$PSScriptRoot\\distinct\\$distinct.msg"
+        if (Test-Path -Path $distinctFile) {
+            [string[]] $oldMessage = Get-Content -Path $distinctFile
+        }
+    }
+
+    if (($oldMessage -join "`n") -ne ($message -join "`n")) {
+        # finally send each chunk of the message
+        foreach ($chunk in $chunks) {
+            SendDiscordMessage -message $chunk -webhook $webhook -botName $botName
+        }
+
+        # if distinct, store the updated message for future checking
+        if ($distinct) {
+            Out-File -FilePath $distinctFile -InputObject $message
+        }
+    }
+}
+

Dynv6.ps1

@@ -1,39 +1,25 @@
 ###################
 # UpdateDynv6.ps1 #
 ###################
-# Windows Powershell Script for updating
-# Dynamic DNS on Dynv6.com using the RESTful
-# interface. Use the windows task schedualer
-# to automatically run.
 #
-# !!!WARNING!!!!
-# This is a Proof Of Consept script!
-# The next version will be turned into a proper
-# cmdlet and packed into a Posershell Module.
+# Windows Powershell Script for updating Dynamic DNS on Dynv6.com using the
+# RESTful interface. Use the windows task schedualer to automatically run.
 #
 # Script Parameters:
-# -zone <System.String>
-#  DNS Zone (domain name) to update.
-#
-# -token <System.String>
-#  HTTP Token. https://dynv6.com/keys#token
-#
-# [-logfile] <System.String>
-#  Path to update log file. By default the file will be placed in:
-#  $env:USERPROFILE\\DDNS_UPDATE_LOG
-#
-# [-isIPV6] <System.Management.Automation.SwitchParameter>
-#  Attempt to update the zone using an IPV6 address.
+# -zone         <string>    DNS Zone (domain name) to update.
+# -token        <string>    HTTP Token, see: https://dynv6.com/keys#token
+# [-netmask]    <string>    Optional, IPv6 netmask, defaults to 128.
+# [-logfile]    <string>    Optional, filename to log to, defaults to "~/.dynv6.log".
+# [-ipv4]       <string>    Optional, IPv4 override, to skip resolving.
+# [-ipv6]       <string>    Optional, IPv6 override, to skip resolving.
 #
 ### Example
-# Run from CMD or Batch file to update with an IPV4:
-# Powershell -ExecutionPolicy Unrestricted -File ./UpdateDynv6.ps1 -zone 'ExampleDomain.com' -token 'XXXXXXXXXXXXXXXXXXXXXXXX'
-#
-### Run from CMD or Batch file to update with an IPV6:
-# Powershell -ExecutionPolicy Unrestricted -File ./UpdateDynv6.ps1 -zone 'ExampleDomain.com' -token 'XXXXXXXXXXXXXXXXXXXXXXXX' -isIPV6
+# Run from CMD or Batch file to IPv4 and IPv6 with automatic lookup:
+# powershell.exe -File ./Dynv6.ps1 -zone "ExampleDomain.com" -token "XXXXXX"
 #
 ###################
 # Copyright 2020 Joe Herbert ( djneonc@gmail.com )
+# Copyright 2023 Andrew Stowell ( andrew@digitaladapt.com )
 #
 # Permission is hereby granted, free of charge, to any person obtaining a
 # copy of this software and associated documentation files (the "Software"),
@@ -88,12 +74,12 @@ $update6 = [System.Uri]'https://dynv6.com/api/update'
 Get-Date | Tee-Object -FilePath $logfile -Append | Out-Host
 
 # lookup IPv4, will be skipped if variable already set
-if ($ipv4 -eq "") {
+if ( ! $ipv4) {
     $ipv4 = Invoke-RestMethod -Method Get -Uri $lookup4
 }
 
 # lookup IPv6, will be skipped if variable already set
-if ($ipv6 -eq "") {
+if ( ! $ipv6) {
     $ipv6 = Invoke-RestMethod -Method Get -Uri $lookup6
 }
 $ipv6 = "$ipv6/$netmask"

SendDiscordChunk.ps1

@@ -0,0 +1,35 @@
+# internal function to transmit a discord chunk
+function SendDiscordMessage
+{
+    param (
+        [string] $message = $(throw "-message is required"),
+        [string] $webhook = $(throw "-webhook is required"),
+        [string] $botName = $(throw "-botName is required")
+    )
+
+    # force utf-8, because that is what Discord needs
+    $OutputEncoding = [console]::InputEncoding = [console]::OutputEncoding = New-Object System.Text.UTF8Encoding
+
+    $header = "Content-Type: application/json"
+
+    # convert string into json, escaping the given message
+    $message = ConvertTo-Json -InputObject $message
+    $botName = ConvertTo-Json -InputObject $botName
+
+    # rewrite json string, because "\u001b[m" needs to "\u001b[0m" instead
+    # windows is fine with the missing zero, but discord needs it
+    $message = $message -Replace "\\u001b\[m", "\u001b[0m"
+
+    # remove wrapping quotes around json string, replace with color-enabled block quotes
+    $message = '"```ansi\n' + $message.SubString(1, $message.length - 2) + '\n```"'
+
+    # {"username": "$botName", "content": "$message"}
+    $content = "{";
+    if ($botName) {
+        $content += '"username": ' + $botName + ', ';
+    }
+    $content += '"content": ' + $message + '}';
+
+    echo "$content" | curl.exe -s -H "$header" -X "POST" -d "@-" "$webhook" | ConvertFrom-Json | Select-Object -Property id | Out-Host
+}
+

config.example.ps1

@@ -0,0 +1,6 @@
+# copy to config.ps1 and update with your information
+
+$DISCORD_SERVER_NAME = "<YOUR_SERVER>"
+
+$DISCORD_WINDOWS_HOOK = "<WEBHOOK_URL_HERE>?wait=true"
+

config.example.sh

@@ -26,7 +26,7 @@ PRUNE_DOWN_TO=0
 
 SERVER_DOMAIN="localhost"
 
-DISCORD_SERVER_NAME="<YOUR SERVER>"
+DISCORD_SERVER_NAME="<YOUR_SERVER>"
 
 DISCORD_GENERAL_HOOK="<WEBHOOK_URL_HERE>?wait=true"