X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=modules%2Facme2.nix;fp=modules%2Facme2.nix;h=0000000000000000000000000000000000000000;hb=72300eb8116c960935a462564d96db6fac355bca;hp=b22e4ccc3e7687f51b103f82656cdb5ae743bfd7;hpb=22e09a87fb538a0eaf81837750b0948f26f79cf1;p=perso%2FImmae%2FConfig%2FNix%2FNUR.git
diff --git a/modules/acme2.nix b/modules/acme2.nix
deleted file mode 100644
index b22e4ccc..00000000
--- a/modules/acme2.nix
+++ /dev/null
@@ -1,353 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-let
-
- cfg = config.security.acme2;
-
- certOpts = { name, ... }: {
- options = {
- webroot = mkOption {
- type = types.str;
- example = "/var/lib/acme/acme-challenges";
- description = ''
- Where the webroot of the HTTP vhost is located.
- .well-known/acme-challenge/ directory
- will be created below the webroot if it doesn't exist.
- http://example.org/.well-known/acme-challenge/ must also
- be available (notice unencrypted HTTP).
- '';
- };
-
- server = mkOption {
- type = types.nullOr types.str;
- default = null;
- description = ''
- ACME Directory Resource URI. Defaults to let's encrypt
- production endpoint,
- https://acme-v02.api.letsencrypt.org/directory, if unset.
- '';
- };
-
- domain = mkOption {
- type = types.str;
- default = name;
- description = "Domain to fetch certificate for (defaults to the entry name)";
- };
-
- email = mkOption {
- type = types.nullOr types.str;
- default = null;
- description = "Contact email address for the CA to be able to reach you.";
- };
-
- user = mkOption {
- type = types.str;
- default = "root";
- description = "User running the ACME client.";
- };
-
- group = mkOption {
- type = types.str;
- default = "root";
- description = "Group running the ACME client.";
- };
-
- allowKeysForGroup = mkOption {
- type = types.bool;
- default = false;
- description = ''
- Give read permissions to the specified group
- () to read SSL private certificates.
- '';
- };
-
- postRun = mkOption {
- type = types.lines;
- default = "";
- example = "systemctl reload nginx.service";
- description = ''
- Commands to run after new certificates go live. Typically
- the web server and other servers using certificates need to
- be reloaded.
-
- Executed in the same directory with the new certificate.
- '';
- };
-
- plugins = mkOption {
- type = types.listOf (types.enum [
- "cert.der" "cert.pem" "chain.pem" "external.sh"
- "fullchain.pem" "full.pem" "key.der" "key.pem" "account_key.json" "account_reg.json"
- ]);
- default = [ "fullchain.pem" "full.pem" "key.pem" "account_key.json" "account_reg.json" ];
- description = ''
- Plugins to enable. With default settings simp_le will
- store public certificate bundle in fullchain.pem,
- private key in key.pem and those two previous
- files combined in full.pem in its state directory.
- '';
- };
-
- directory = mkOption {
- type = types.str;
- readOnly = true;
- default = "/var/lib/acme/${name}";
- description = "Directory where certificate and other state is stored.";
- };
-
- extraDomains = mkOption {
- type = types.attrsOf (types.nullOr types.str);
- default = {};
- example = literalExample ''
- {
- "example.org" = "/srv/http/nginx";
- "mydomain.org" = null;
- }
- '';
- description = ''
- A list of extra domain names, which are included in the one certificate to be issued, with their
- own server roots if needed.
- '';
- };
- };
- };
-
-in
-
-{
-
- ###### interface
- imports = [
- (mkRemovedOptionModule [ "security" "acme2" "production" ] ''
- Use security.acme2.server to define your staging ACME server URL instead.
-
- To use the let's encrypt staging server, use security.acme2.server =
- "https://acme-staging-v02.api.letsencrypt.org/directory".
- ''
- )
- (mkRemovedOptionModule [ "security" "acme2" "directory"] "ACME Directory is now hardcoded to /var/lib/acme and its permisisons are managed by systemd. See https://github.com/NixOS/nixpkgs/issues/53852 for more info.")
- (mkRemovedOptionModule [ "security" "acme" "preDelay"] "This option has been removed. If you want to make sure that something executes before certificates are provisioned, add a RequiredBy=acme-\${cert}.service to the service you want to execute before the cert renewal")
- (mkRemovedOptionModule [ "security" "acme" "activationDelay"] "This option has been removed. If you want to make sure that something executes before certificates are provisioned, add a RequiredBy=acme-\${cert}.service to the service you want to execute before the cert renewal")
- ];
- options = {
- security.acme2 = {
-
- validMin = mkOption {
- type = types.int;
- default = 30 * 24 * 3600;
- description = "Minimum remaining validity before renewal in seconds.";
- };
-
- renewInterval = mkOption {
- type = types.str;
- default = "weekly";
- description = ''
- Systemd calendar expression when to check for renewal. See
- systemd.time
- 7.
- '';
- };
-
- server = mkOption {
- type = types.nullOr types.str;
- default = null;
- description = ''
- ACME Directory Resource URI. Defaults to let's encrypt
- production endpoint,
- https://acme-v02.api.letsencrypt.org/directory, if unset.
- '';
- };
-
- preliminarySelfsigned = mkOption {
- type = types.bool;
- default = true;
- description = ''
- Whether a preliminary self-signed certificate should be generated before
- doing ACME requests. This can be useful when certificates are required in
- a webserver, but ACME needs the webserver to make its requests.
-
- With preliminary self-signed certificate the webserver can be started and
- can later reload the correct ACME certificates.
- '';
- };
-
- certs = mkOption {
- default = { };
- type = with types; attrsOf (submodule certOpts);
- description = ''
- Attribute set of certificates to get signed and renewed. Creates
- acme-''${cert}.{service,timer} systemd units for
- each certificate defined here. Other services can add dependencies
- to those units if they rely on the certificates being present,
- or trigger restarts of the service if certificates get renewed.
- '';
- example = literalExample ''
- {
- "example.com" = {
- webroot = "/var/www/challenges/";
- email = "foo@example.com";
- extraDomains = { "www.example.com" = null; "foo.example.com" = "/var/www/foo/"; };
- };
- "bar.example.com" = {
- webroot = "/var/www/challenges/";
- email = "bar@example.com";
- };
- }
- '';
- };
- };
- };
-
- ###### implementation
- config = mkMerge [
- (mkIf (cfg.certs != { }) {
-
- systemd.services = let
- services = concatLists servicesLists;
- servicesLists = mapAttrsToList certToServices cfg.certs;
- certToServices = cert: data:
- let
- lpath = "acme/${cert}";
- rights = if data.allowKeysForGroup then "750" else "700";
- cmdline = [ "-v" "-d" data.domain "--default_root" data.webroot "--valid_min" cfg.validMin ]
- ++ optionals (data.email != null) [ "--email" data.email ]
- ++ concatMap (p: [ "-f" p ]) data.plugins
- ++ concatLists (mapAttrsToList (name: root: [ "-d" (if root == null then name else "${name}:${root}")]) data.extraDomains)
- ++ optionals (cfg.server != null || data.server != null) ["--server" (if data.server == null then cfg.server else data.server)];
- acmeService = {
- description = "Renew ACME Certificate for ${cert}";
- after = [ "network.target" "network-online.target" ];
- wants = [ "network-online.target" ];
- # simp_le uses requests, which uses certifi under the hood,
- # which doesn't respect the system trust store.
- # At least in the acme test, we provision a fake CA, impersonating the LE endpoint.
- # REQUESTS_CA_BUNDLE is a way to teach python requests to use something else
- environment.REQUESTS_CA_BUNDLE = "/etc/ssl/certs/ca-certificates.crt";
- serviceConfig = {
- Type = "oneshot";
- # With RemainAfterExit the service is considered active even
- # after the main process having exited, which means when it
- # gets changed, the activation phase restarts it, meaning
- # the permissions of the StateDirectory get adjusted
- # according to the specified group
- # Edit: Timers will never run because of this
- # RemainAfterExit = true;
- SuccessExitStatus = [ "0" "1" ];
- User = data.user;
- Group = data.group;
- PrivateTmp = true;
- StateDirectory = lpath;
- StateDirectoryMode = rights;
- ExecStartPre =
- let
- script = pkgs.writeScript "acme-pre-start" ''
- #!${pkgs.runtimeShell} -e
- mkdir -p '${data.webroot}/.well-known/acme-challenge'
- chmod a+w '${data.webroot}/.well-known/acme-challenge'
- #doesn't work for multiple concurrent runs
- #chown -R '${data.user}:${data.group}' '${data.webroot}/.well-known/acme-challenge'
- '';
- in
- "+${script}";
- WorkingDirectory = "/var/lib/${lpath}";
- ExecStart = "${pkgs.simp_le_0_17}/bin/simp_le ${escapeShellArgs cmdline}";
- ExecStartPost =
- let
- script = pkgs.writeScript "acme-post-start" ''
- #!${pkgs.runtimeShell} -e
- ${data.postRun}
- '';
- in
- "+${script}";
- };
-
- };
- selfsignedService = {
- description = "Create preliminary self-signed certificate for ${cert}";
- path = [ pkgs.openssl ];
- script =
- ''
- workdir="$(mktemp -d)"
-
- # Create CA
- openssl genrsa -des3 -passout pass:xxxx -out $workdir/ca.pass.key 2048
- openssl rsa -passin pass:xxxx -in $workdir/ca.pass.key -out $workdir/ca.key
- openssl req -new -key $workdir/ca.key -out $workdir/ca.csr \
- -subj "/C=UK/ST=Warwickshire/L=Leamington/O=OrgName/OU=Security Department/CN=example.com"
- openssl x509 -req -days 1 -in $workdir/ca.csr -signkey $workdir/ca.key -out $workdir/ca.crt
-
- # Create key
- openssl genrsa -des3 -passout pass:xxxx -out $workdir/server.pass.key 2048
- openssl rsa -passin pass:xxxx -in $workdir/server.pass.key -out $workdir/server.key
- openssl req -new -key $workdir/server.key -out $workdir/server.csr \
- -subj "/C=UK/ST=Warwickshire/L=Leamington/O=OrgName/OU=IT Department/CN=example.com"
- openssl x509 -req -days 1 -in $workdir/server.csr -CA $workdir/ca.crt \
- -CAkey $workdir/ca.key -CAserial $workdir/ca.srl -CAcreateserial \
- -out $workdir/server.crt
-
- # Copy key to destination
- cp $workdir/server.key /var/lib/${lpath}/key.pem
-
- # Create fullchain.pem (same format as "simp_le ... -f fullchain.pem" creates)
- cat $workdir/{server.crt,ca.crt} > "/var/lib/${lpath}/fullchain.pem"
-
- # Create full.pem for e.g. lighttpd
- cat $workdir/{server.key,server.crt,ca.crt} > "/var/lib/${lpath}/full.pem"
-
- # Give key acme permissions
- chown '${data.user}:${data.group}' "/var/lib/${lpath}/"{key,fullchain,full}.pem
- chmod ${rights} "/var/lib/${lpath}/"{key,fullchain,full}.pem
- '';
- serviceConfig = {
- Type = "oneshot";
- PrivateTmp = true;
- StateDirectory = lpath;
- User = data.user;
- Group = data.group;
- };
- unitConfig = {
- # Do not create self-signed key when key already exists
- ConditionPathExists = "!/var/lib/${lpath}/key.pem";
- };
- };
- in (
- [ { name = "acme-${cert}"; value = acmeService; } ]
- ++ optional cfg.preliminarySelfsigned { name = "acme-selfsigned-${cert}"; value = selfsignedService; }
- );
- servicesAttr = listToAttrs services;
- in
- servicesAttr;
-
- # FIXME: this doesn't work for multiple users
- systemd.tmpfiles.rules =
- flip mapAttrsToList cfg.certs
- (cert: data: "d ${data.webroot}/.well-known/acme-challenge - ${data.user} ${data.group}");
-
- systemd.timers = flip mapAttrs' cfg.certs (cert: data: nameValuePair
- ("acme-${cert}")
- ({
- description = "Renew ACME Certificate for ${cert}";
- wantedBy = [ "timers.target" ];
- timerConfig = {
- OnCalendar = cfg.renewInterval;
- Unit = "acme-${cert}.service";
- Persistent = "yes";
- AccuracySec = "5m";
- RandomizedDelaySec = "1h";
- };
- })
- );
-
- systemd.targets.acme-selfsigned-certificates = mkIf cfg.preliminarySelfsigned {};
- systemd.targets.acme-certificates = {};
- })
-
- ];
-
- meta = {
- maintainers = with lib.maintainers; [ abbradar fpletz globin ];
- #doc = ./acme.xml;
- };
-}