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ntfy-sh: configure auth, simplify proxying

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Colin 2023-09-25 17:34:50 +00:00
parent 14bc8a1732
commit a265dd28dd
1 changed files with 35 additions and 13 deletions
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48
hosts/by-name/servo/services/ntfy.nix
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@ -9,46 +9,68 @@
# - ntfy pub https://ntfy.uninsane.org/TOPIC "my message"
# in production, TOPIC is a shared secret between the publisher (Matrix homeserver) and the subscriber (phone)
#
# administering:
# - sudo -u ntfy-sh ntfy access
#
# debugging:
# - make sure that the keepalives are good:
# - on the subscriber machine, run `lsof -i4` to find the port being used
# - `sudo tcpdump tcp port <p>`
# - shouldn't be too spammy
#
# matrix integration:
# - the user must manually point synapse to the ntfy endpoint:
# - `curl --header "Authorization: <your_token>" --data '{ "app_display_name": "sane-nix moby", "app_id": "ntfy.uninsane.org", "data": { "url": "https://ntfy.uninsane.org/_matrix/push/v1/notify", "format": "event_id_only" }, "device_display_name": "sane-nix moby", "kind": "http", "lang": "en-US", "profile_tag": "", "pushkey": "https://ntfy.uninsane.org/TOPIC" }' localhost:8008/_matrix/client/v3/pushers/set`
# where the token is grabbed from Element's help&about page when logged in
# - to remove, send this `curl` with `"kind": null`
{ lib, ... }:
{ config, lib, pkgs, ... }:
{
sane.persist.sys.plaintext = [
# not sure if it's really necessary
# not 100% necessary to persist this, but ntfy does keep a 12hr (by default) cache
# for pushing notifications to users who become offline.
# ACLs also live here.
{ user = "ntfy-sh"; group ="ntfy-sh"; path = "/var/lib/ntfy-sh"; }
];
services.ntfy-sh.enable = true;
services.ntfy-sh.settings = {
base-url = "https://ntfy.uninsane.org";
# behind-proxy = true; # not sure if needed
behind-proxy = true; # not sure if needed
# keepalive interval is a ntfy-specific keepalive thing, where it sends actual data down the wire.
# it's not simple TCP keepalive.
# defaults to 45s.
# note that the client may still do its own TCP-level keepalives, typically every 30s
keepalive-interval = "15m";
log-level = "trace"; # trace, debug, info (default), warn, error
auth-default-access = "deny-all";
};
systemd.services.ntfy-sh.serviceConfig.DynamicUser = lib.mkForce false;
systemd.services.ntfy-sh.preStart = ''
# make this specific topic read-write by world
# it would be better to use the token system, but that's extra complexity for e.g.
# how do i plumb a secret into the Matrix notification pusher
#
# note that this will fail upon first run, i.e. before ntfy has created its db.
# just restart the service.
topic=$(cat ${config.sops.secrets.ntfy-sh-topic.path})
${pkgs.ntfy-sh}/bin/ntfy access everyone "$topic" read-write
'';
sops.secrets."ntfy-sh-topic" = {
mode = "0440";
owner = config.users.users.ntfy-sh.name;
group = config.users.users.ntfy-sh.name;
};
systemd.services.ntfy-sh.serviceConfig.DynamicUser = lib.mkForce false;
services.nginx.virtualHosts."ntfy.uninsane.org" = {
forceSSL = true;
enableACME = true;
locations."/" = {
proxyPass = "http://127.0.0.1:2586";
# proxyWebsockets = true; #< before simplifying to this, ensure it doesn't add keepalives to the subscriber
# support websocket upgrades. without that, `ntfy sub` hangs silently
extraConfig = ''
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_buffering off;
proxy_read_timeout 7d;
'';
recommendedProxySettings = true; #< adds headers so ntfy logs include the real IP
proxyWebsockets = true; #< support websocket upgrades. without that, `ntfy sub` hangs silently
};
};
sane.dns.zones."uninsane.org".inet.CNAME."ntfy" = "native";