commit 698c6ba25163768e2126119f01db2c62a8d43653 · ptr.pet/nixos-cloud-resources

.gitignore

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       result

     

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       .hetzner

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firewall/provider/hetzner/app.nix

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       {pkgs, lib ? pkgs.lib, taggedPorts, id}: let

     

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         l = lib // (import ./rules.nix {inherit lib;});

     

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         firewallRules =

     

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           builtins.toFile

     

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           "hetzner-firewall-${toString id}-rules.json"

     

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           (builtins.toJSON (l.mkFirewallRuleset taggedPorts));

     

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       in pkgs.writers.writeNu "apply-hetzner" ''

     

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         let firewallId = ${toString id}

     

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         let rulesFile = "${firewallRules}"

     

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         ${l.fileContents ./app.nu}

     

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       ''

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       {pkgs, lib ? pkgs.lib, taggedPorts, id}: let

     

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         l = lib // (import ./rules.nix {inherit lib;});

     

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         firewallRules =

     

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           builtins.toFile

     

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           "hetzner-firewall-${toString id}-rules.json"

     

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           (builtins.toJSON (l.mkFirewallRuleset taggedPorts));

     

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       in pkgs.writers.writeNu "apply-hetzner-firewall-${toString id}" ''

     

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         nu ${./app.nu} ${toString id} ${firewallRules}

     

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       ''

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firewall/provider/hetzner/app.nu

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       use std/log

     

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       let authHeader = ["authorization" $"Bearer ($env.HETZNER_API_TOKEN)"]

     

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       def makeApiUrl [path: string] {

     

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         return $"https://api.hetzner.cloud/v1($path)"

     

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       }

     

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       def post [path: string] {

     

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         $in | http post -e --full -H $authHeader --content-type application/json (makeApiUrl $path)

     

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       }

     

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       def get [path: string] {

     

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         http get -e --full -H $authHeader (makeApiUrl $path)

     

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       }

     

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       # first fetch firewall to see if it even exists

     

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       let resp = get $"/firewalls/($firewallId)"

     

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       if $resp.status == 404 {

     

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         log error $"provided firewall \(id ($firewallId)\) does not exist"

     

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         exit 1

     

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       }

     

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       let firewall = $resp.body | get firewall

     

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       # backup firewall

     

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       let backupPath = $".hetzner/($firewallId).json"

     

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       mkdir .hetzner; $firewall | to json | save -f $backupPath

     

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       log info $"backing up firewall ($firewallId) to ($backupPath)"

     

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       # apply rules

     

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       let resp = open $rulesFile | post $"/firewalls/($firewallId)/actions/set_rules"

     

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       if $resp.status != 201 {

     

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         log error $"could not apply firewall \(id ($firewallId)\):\n($resp.body | to text)"

     

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         exit 2

     

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       }

     

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       log info $"applied firewall ($firewallId)"

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       use std/log

     

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       def main [firewallId: number, rulesFile: path, --auth-token (-t): string] {

     

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           let auth_token: string = if $auth_token == null { $env.HETZNER_API_TOKEN? } else { $auth_token }

     

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           let authHeader: list<string> = ["authorization" $"Bearer ($auth_token)"]

     

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           def makeApiUrl [path: string] {

     

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               return $"https://api.hetzner.cloud/v1($path)"

     

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           }

     

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           def post [path: string] {

     

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               $in | http post -e --full -H $authHeader --content-type application/json (makeApiUrl $path)

     

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           }

     

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           def get [path: string] {

     

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               http get -e --full -H $authHeader (makeApiUrl $path)

     

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           }

     

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           # first fetch firewall to see if it even exists

     

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           let resp = get $"/firewalls/($firewallId)"

     

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           if $resp.status == 404 {

     

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               log error $"provided firewall \(id ($firewallId)\) does not exist"

     

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               exit 1

     

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           } else if $resp.status != 200 {

     

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               log error $"could not get firewall \(id ($firewallId)\):\n($resp.body.error | to text -n)"

     

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               exit 1

     

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           }

     

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           let firewall = $resp.body | get firewall

     

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           # backup firewall

     

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           let backupPath = $".hetzner/($firewallId).json"

     

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           mkdir .hetzner; $firewall | to json | save -f $backupPath

     

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           log info $"backing up firewall ($firewallId) to ($backupPath)"

     

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           # apply rules

     

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           let resp = open $rulesFile | post $"/firewalls/($firewallId)/actions/set_rules"

     

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           if $resp.status != 201 {

     

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               log error $"could not apply firewall \(id ($firewallId)\):\n($resp.body.error | to text -n)"

     

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               exit 2

     

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           }

     

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           log info $"applied firewall ($firewallId)"

     

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       }

     

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