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Merge pull request #974 from enesoztrk/chromecast
Chromecast support
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31 changes: 31 additions & 0 deletions
31
modules/reference/services/chromecast/chromecast-config.nix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| # Copyright 2024 TII (SSRC) and the Ghaf contributors | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
| { config, lib, ... }: | ||
| { | ||
| config.ghaf.reference.services.chromecast = | ||
| let | ||
| externalNic = | ||
| let | ||
| firstPciWifiDevice = lib.head config.ghaf.hardware.definition.network.pciDevices; | ||
| in | ||
| "${firstPciWifiDevice.name}"; | ||
|
|
||
| internalNic = | ||
| let | ||
| vmNetworking = import ../../../microvm/virtualization/microvm/common/vm-networking.nix { | ||
| inherit config; | ||
| inherit lib; | ||
| vmName = "net-vm"; | ||
| inherit (config.microvm.net-vm) macAddress; | ||
| internalIP = 1; | ||
| }; | ||
| in | ||
| "${lib.head vmNetworking.networking.nat.internalInterfaces}"; | ||
|
|
||
| in | ||
| { | ||
| enable = lib.mkDefault false; | ||
| inherit externalNic; | ||
| inherit internalNic; | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| # Copyright 2024 TII (SSRC) and the Ghaf contributors | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
| { | ||
| config, | ||
| lib, | ||
| ... | ||
| }: | ||
| let | ||
| cfg = config.ghaf.reference.services.chromecast; | ||
| inherit (config.ghaf.reference) services; | ||
| inherit (lib) | ||
| mkEnableOption | ||
| mkOption | ||
| mkIf | ||
| types | ||
| ; | ||
| tcpChromeCastPort1 = 8008; | ||
| tcpChromeCastPort2 = 8009; | ||
|
|
||
| ssdpMcastPort = 1900; | ||
| mdnsMcastPort = 5353; | ||
| ssdpMcastIp = "239.255.255.250"; | ||
| in | ||
| { | ||
| options.ghaf.reference.services.chromecast = { | ||
| enable = mkEnableOption "Enable chromecast service"; | ||
|
|
||
| externalNic = mkOption { | ||
| type = types.str; | ||
| default = ""; | ||
| description = '' | ||
| External network interface | ||
| ''; | ||
| }; | ||
| internalNic = mkOption { | ||
| type = types.str; | ||
| default = ""; | ||
| description = '' | ||
| Internal network interface | ||
| ''; | ||
| }; | ||
|
|
||
| tcpPorts = mkOption { | ||
| type = lib.types.listOf lib.types.port; | ||
| readOnly = true; | ||
|
|
||
| default = [ | ||
| tcpChromeCastPort1 | ||
| tcpChromeCastPort2 | ||
| ]; | ||
| description = '' | ||
| Chromecast tcp ports | ||
| ''; | ||
| }; | ||
| udpPorts = mkOption { | ||
| type = lib.types.listOf lib.types.port; | ||
| readOnly = true; | ||
| default = [ | ||
| ssdpMcastPort | ||
| mdnsMcastPort | ||
| ]; | ||
| description = '' | ||
| Chromecast udp ports | ||
| ''; | ||
| }; | ||
| }; | ||
|
|
||
| config = mkIf cfg.enable { | ||
| assertions = [ | ||
| { | ||
| assertion = cfg.externalNic != ""; | ||
| message = "External Nic must be set"; | ||
| } | ||
| { | ||
| assertion = cfg.internalNic != ""; | ||
| message = "Internal Nic must be set"; | ||
| } | ||
| ]; | ||
|
|
||
| services.nw-packet-forwarder = { | ||
| enable = true; | ||
| inherit (cfg) externalNic; | ||
| inherit (cfg) internalNic; | ||
| chromecast = true; | ||
| }; | ||
|
|
||
| services.smcroute = { | ||
| enable = true; | ||
| bindingNic = "${cfg.externalNic}"; | ||
| rules = '' | ||
| mgroup from ${cfg.externalNic} group ${ssdpMcastIp} | ||
| mgroup from ${cfg.internalNic} group ${ssdpMcastIp} | ||
| mroute from ${cfg.externalNic} group ${ssdpMcastIp} to ${cfg.internalNic} | ||
| mroute from ${cfg.internalNic} group ${ssdpMcastIp} to ${cfg.externalNic} | ||
| ''; | ||
| }; | ||
| networking = { | ||
| firewall.enable = true; | ||
| firewall.extraCommands = " | ||
| # Forward incoming TCP traffic on ports 8008 and 8009 to the internal NIC | ||
| iptables -I FORWARD -i ${cfg.externalNic} -o ${cfg.internalNic} -p tcp --sport ${toString tcpChromeCastPort1} -j ACCEPT | ||
| iptables -I FORWARD -i ${cfg.externalNic} -o ${cfg.internalNic} -p tcp --sport ${toString tcpChromeCastPort2} -j ACCEPT | ||
| # Enable NAT for outgoing 8008 and 8009 Chromecast traffic | ||
| iptables -t nat -I POSTROUTING -o ${cfg.externalNic} -p tcp --dport ${toString tcpChromeCastPort1} -j MASQUERADE | ||
| iptables -t nat -I POSTROUTING -o ${cfg.externalNic} -p tcp --dport ${toString tcpChromeCastPort2} -j MASQUERADE | ||
| # TTL adjustments to avoid multicast loops | ||
| iptables -t mangle -I PREROUTING -i ${cfg.externalNic} -d ${ssdpMcastIp} -j TTL --ttl-set 1 | ||
| iptables -t mangle -I PREROUTING -i ${cfg.internalNic} -d ${ssdpMcastIp} -j TTL --ttl-inc 1 | ||
| # Enable NAT for outgoing udp multicast traffic | ||
| iptables -t nat -I POSTROUTING -o ${cfg.externalNic} -p udp -d ${ssdpMcastIp} --dport ${toString ssdpMcastPort} -j MASQUERADE | ||
| "; | ||
|
|
||
| }; | ||
| }; | ||
| } |
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