From ae0c5392b7dd6d890c877253b0e1b621c1639ded Mon Sep 17 00:00:00 2001
From: Mikhail Klementev <blame@dumpstack.io>
Date: Tue, 17 Jan 2023 17:02:34 +0000
Subject: [PATCH] Initial

---
 .gitignore          |   2 +
 LICENSE             |   9 ++
 configuration.nix   | 207 ++++++++++++++++++++++++++++++++++++++++++++
 ldap/go.mod         |  16 ++++
 ldap/go.sum         |  25 ++++++
 ldap/ldap.go        | 169 ++++++++++++++++++++++++++++++++++++
 secrets.nix.example |  44 ++++++++++
 7 files changed, 472 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 LICENSE
 create mode 100644 configuration.nix
 create mode 100644 ldap/go.mod
 create mode 100644 ldap/go.sum
 create mode 100644 ldap/ldap.go
 create mode 100644 secrets.nix.example

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..849b2f0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+secrets.nix
+hardware-configuration.nix
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..47df30c
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) 2023 Mikhail Klementev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/configuration.nix b/configuration.nix
new file mode 100644
index 0000000..75f1edc
--- /dev/null
+++ b/configuration.nix
@@ -0,0 +1,207 @@
+{ config, pkgs, lib, ... }:
+let
+  secrets = import ./secrets.nix;
+
+  ldap = pkgs.buildGoModule rec {
+    name = "ldap";
+    src = ./ldap;
+    vendorHash = "sha256-HlsVCWs7Q4kBAtRpt3U323tRmgWdQxZlpfMZ/cSlw4Q=";
+  };
+
+  image =
+    "chocobozzz/peertube@" +
+    "sha256:3bd126fc8b66a6a12593d73f74d0a3ffc7fc3206e5e9ebf39c8a8e0ca5408194";
+
+  domainName = "v.lor.sh";
+  hostName = builtins.replaceStrings [ "." ] [ "-" ] "${domainName}";
+in {
+  imports = [ ./hardware-configuration.nix ];
+
+  boot.loader = {
+    efi.canTouchEfiVariables = true;
+    grub = {
+      enable = true;
+      efiSupport = true;
+      device = "nodev";
+      mirroredBoots = [{
+        devices = [ "nodev" ];
+        path = "/boot-fallback";
+      }];
+    };
+  };
+
+  networking = {
+    hostName = hostName;
+    hostId = (builtins.substring 0 8 (builtins.readFile "/etc/machine-id"));
+
+    useDHCP = false;
+
+    interfaces.eno1 = {
+      ipv4 = secrets.ipv4;
+      ipv6 = secrets.ipv6;
+    };
+
+    nameservers = [ "1.1.1.1" ];
+
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ 80 443 ];
+    };
+  };
+
+  users.extraUsers.root.openssh.authorizedKeys.keys = secrets.pubkeys;
+
+  services.openssh.enable = true;
+
+  environment.systemPackages = with pkgs; [ vim htop git tmux ];
+
+  systemd.services."peertube-ldap" = {
+    wantedBy = [ "multi-user.target" ];
+    after = [ "network.target" ];
+    environment = {
+      AUTH_URL = secrets.peertube.auth.url;
+      AUTH_SECRET = secrets.peertube.auth.secret;
+      LDAP_USER = secrets.peertube.ldap.user;
+      LDAP_PASS = secrets.peertube.ldap.password;
+    };
+    serviceConfig = {
+      Restart = "always";
+      RestartSec = 30;
+      ExecStart = "${ldap}/bin/ldap";
+      User = "peertube";
+    };
+  };
+
+  services.caddy = {
+    enable = true;
+    virtualHosts."${domainName}".extraConfig = ''
+      encode gzip
+
+      root * /dev/null
+      reverse_proxy localhost:9000
+
+      header {
+          Strict-Transport-Security "max-age=31536000;"
+      }
+    '';
+  };
+
+  system.activationScripts.peertube = ''
+    mkdir -p /var/lib/peertube/{storage,config}
+    cat > /var/lib/peertube/config/local.yml <<EOF
+    redis:
+      hostname: '${hostName}'
+
+    object_storage:
+      enabled: true
+      endpoint: 'https://sos-ch-gva-2.exo.io'
+      region: 'ch-gva-2'
+
+      upload_acl:
+        public: 'public-read'
+        private: 'private'
+
+      proxy:
+        proxify_private_files: true
+
+      credentials:
+        access_key_id: '${secrets.peertube.s3.id}'
+        secret_access_key: '${secrets.peertube.s3.key}'
+
+      max_upload_part: 2GB
+
+      streaming_playlists:
+        bucket_name: 'v-lor-sh'
+        prefix: 'streaming-playlists/'
+        base_url: 'https://v-lor-sh.sos-ch-gva-2.exoscale-cdn.com'
+
+      videos:
+        bucket_name: 'v-lor-sh'
+        prefix: 'videos/'
+        base_url: 'https://v-lor-sh.sos-ch-gva-2.exoscale-cdn.com'
+    EOF
+  '';
+
+  users.users.peertube = {
+    isSystemUser = true;
+    group = "peertube";
+  };
+
+  users.groups.peertube = { };
+
+  systemd.services.peertube-init-db = {
+    description = "Initialization database for PeerTube daemon";
+    after = [ "network.target" "postgresql.service" ];
+    requires = [ "postgresql.service" ];
+    before = [ "docker-peertube.service" ];
+    wantedBy = [ "docker-peertube.service" ];
+    script = ''
+      ${pkgs.postgresql}/bin/psql peertube -c '\q' && exit 0
+      ${pkgs.postgresql}/bin/createuser -w peertube
+      ${pkgs.postgresql}/bin/psql -c "ALTER USER peertube WITH PASSWORD '${secrets.peertube.db.password}'";
+
+      ${pkgs.postgresql}/bin/createdb -O peertube -E UTF8 -T template0 peertube
+      ${pkgs.postgresql}/bin/psql -c "CREATE EXTENSION pg_trgm;" peertube
+      ${pkgs.postgresql}/bin/psql -c "CREATE EXTENSION unaccent;" peertube
+    '';
+    serviceConfig = {
+      Type = "oneshot";
+      User = "postgres";
+      Group = "postgres";
+    };
+  };
+
+  services.postgresql = {
+    enable = true;
+    enableTCPIP = true;
+  };
+
+  services.redis.servers.peertube = {
+    enable = true;
+    bind = "127.0.0.1";
+    port = 6379;
+  };
+
+  virtualisation.oci-containers.backend = "docker";
+
+  virtualisation.oci-containers.containers = {
+    peertube = {
+      image = image;
+      environment = {
+        PEERTUBE_SECRET = "${secrets.peertube.secret}";
+        PEERTUBE_WEBSERVER_HOSTNAME = domainName;
+        PEERTUBE_DB_USERNAME = "peertube";
+        PEERTUBE_DB_PASSWORD = secrets.peertube.db.password;
+        PEERTUBE_DB_HOSTNAME = hostName;
+        PEERTUBE_ADMIN_EMAIL = secrets.peertube.admin.email;
+      };
+      volumes = [
+        "/var/lib/peertube/storage:/data"
+        "/var/lib/peertube/config:/config"
+      ];
+      extraOptions = [ "--network=host" ];
+    };
+  };
+
+  services.zfs = {
+    autoScrub.enable = true;
+    trim.enable = true;
+  };
+
+  time.timeZone = "UTC";
+
+  system.autoUpgrade = {
+    enable = true;
+    allowReboot = true;
+  };
+
+  system.stateVersion = "22.11";
+
+  nix = {
+    optimise.automatic = true;
+    gc = {
+      automatic = true;
+      options = "--delete-older-than 7d";
+    };
+  };
+}
diff --git a/ldap/go.mod b/ldap/go.mod
new file mode 100644
index 0000000..87d3f1c
--- /dev/null
+++ b/ldap/go.mod
@@ -0,0 +1,16 @@
+module code.dumpstack.io/infra/v.lor.sh/ldap
+
+go 1.19
+
+require (
+	github.com/jackc/pgx/v5 v5.2.0
+	github.com/lor00x/goldap v0.0.0-20180618054307-a546dffdd1a3
+	github.com/vjeantet/ldapserver v1.0.1
+)
+
+require (
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 // indirect
+	golang.org/x/text v0.3.8 // indirect
+)
diff --git a/ldap/go.sum b/ldap/go.sum
new file mode 100644
index 0000000..6b25943
--- /dev/null
+++ b/ldap/go.sum
@@ -0,0 +1,25 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b h1:C8S2+VttkHFdOOCXJe+YGfa4vHYwlt4Zx+IVXQ97jYg=
+github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b/go.mod h1:vsD4gTJCa9TptPL8sPkXrLZ+hDuNrZCnj29CQpr4X1E=
+github.com/jackc/pgx/v5 v5.2.0 h1:NdPpngX0Y6z6XDFKqmFQaE+bCtkqzvQIOt1wvBlAqs8=
+github.com/jackc/pgx/v5 v5.2.0/go.mod h1:Ptn7zmohNsWEsdxRawMzk3gaKma2obW+NWTnKa0S4nk=
+github.com/lor00x/goldap v0.0.0-20180618054307-a546dffdd1a3 h1:wIONC+HMNRqmWBjuMxhatuSzHaljStc4gjDeKycxy0A=
+github.com/lor00x/goldap v0.0.0-20180618054307-a546dffdd1a3/go.mod h1:37YR9jabpiIxsb8X9VCIx8qFOjTDIIrIHHODa8C4gz0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/vjeantet/ldapserver v1.0.1 h1:3z+TCXhwwDLJC3pZCNbuECPDqC2x1R7qQQbswB1Qwoc=
+github.com/vjeantet/ldapserver v1.0.1/go.mod h1:YvUqhu5vYhmbcLReMLrm/Tq3S7Yj43kSVFvvol6Lh6k=
+golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 h1:Y/gsMcFOcR+6S6f3YeMKl5g+dZMEWqcz5Czj/GWYbkM=
+golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
diff --git a/ldap/ldap.go b/ldap/ldap.go
new file mode 100644
index 0000000..ff9bb9d
--- /dev/null
+++ b/ldap/ldap.go
@@ -0,0 +1,169 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/lor00x/goldap/message"
+	ldap "github.com/vjeantet/ldapserver"
+)
+
+func auth(username, email, password string) (ruser, remail string, err error) {
+	var payload struct {
+		Secret   string
+		Username string
+		Email    string
+		Password string
+	}
+
+	payload.Secret = os.Getenv("AUTH_SECRET")
+	payload.Username = username
+	payload.Email = email
+	payload.Password = password
+
+	raw, err := json.Marshal(payload)
+	if err != nil {
+		return
+	}
+	body := bytes.NewReader(raw)
+
+	req, err := http.NewRequest("POST", os.Getenv("AUTH_URL"), body)
+	if err != nil {
+		return
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	var result struct {
+		Username string
+		Email    string
+		Error    string
+	}
+
+	err = json.NewDecoder(resp.Body).Decode(&result)
+	if err != nil {
+		return
+	}
+
+	if result.Error != "" {
+		err = errors.New(result.Error)
+	}
+
+	ruser = result.Username
+	remail = result.Email
+	return
+}
+
+func bind(w ldap.ResponseWriter, m *ldap.Message) {
+	r := m.GetBindRequest()
+	res := ldap.NewBindResponse(ldap.LDAPResultSuccess)
+
+	username := string(r.Name())
+	password := string(r.AuthenticationSimple())
+
+	if username == os.Getenv("LDAP_USER") {
+		if password == os.Getenv("LDAP_PASS") {
+			w.Write(res)
+			return
+		}
+	}
+
+	if username == "root" {
+		res.SetResultCode(ldap.LDAPResultInvalidCredentials)
+		res.SetDiagnosticMessage("root login is disabled")
+		w.Write(res)
+		return
+	}
+
+	_, _, err := auth(username, "", password)
+	if err == nil {
+		fmt.Println("bind:", username, "ok")
+		w.Write(res)
+		return
+	}
+
+	fmt.Println("bind:", username, "incorrect password")
+	res.SetResultCode(ldap.LDAPResultInvalidCredentials)
+	res.SetDiagnosticMessage("invalid credentials")
+	w.Write(res)
+}
+
+func updateEmail(username, email string) (err error) {
+	path := "dbname=" + os.Getenv("DATABASE")
+	conn, err := pgx.Connect(context.Background(), path)
+	if err != nil {
+		return
+	}
+	defer conn.Close(context.Background())
+
+	query := "update \"user\" set email=$1 where username=$2"
+	_, err = conn.Exec(context.Background(), query, email, username)
+	return
+}
+
+func search(w ldap.ResponseWriter, m *ldap.Message) {
+	r := m.GetSearchRequest()
+	res := ldap.NewSearchResultDoneResponse(ldap.LDAPResultSuccess)
+	defer w.Write(res)
+
+	var username, email string
+
+	s := r.FilterString()
+	s = s[6 : len(s)-1]
+
+	if strings.Contains(s, "@") {
+		username, email, _ = auth("", s, "")
+	} else {
+		username, email, _ = auth(s, "", "")
+	}
+
+	if username == "" || email == "" {
+		fmt.Println("search:", s, "not found")
+		return
+	}
+	fmt.Println("search:", s, "found", username, email)
+
+	err := updateEmail(username, email)
+	if err != nil {
+		fmt.Println(err)
+	}
+
+	e := ldap.NewSearchResultEntry(strings.ToLower(username))
+	e.AddAttribute("uid", message.AttributeValue(strings.ToLower(username)))
+	e.AddAttribute("mail", message.AttributeValue(strings.ToLower(email)))
+	w.Write(e)
+}
+
+func main() {
+	ldap.Logger = ldap.DiscardingLogger
+
+	server := ldap.NewServer()
+
+	routes := ldap.NewRouteMux()
+	routes.Bind(bind)
+	routes.Search(search)
+	server.Handle(routes)
+
+	go server.ListenAndServe(":10389")
+
+	ch := make(chan os.Signal)
+	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+	<-ch
+	close(ch)
+
+	server.Stop()
+}
diff --git a/secrets.nix.example b/secrets.nix.example
new file mode 100644
index 0000000..a1471ca
--- /dev/null
+++ b/secrets.nix.example
@@ -0,0 +1,44 @@
+{
+  pubkeys = [
+    ""
+  ];
+
+  peertube = {
+    secret = "";
+    db = {
+      password = "";
+    };
+    auth = {
+      url = "";
+      secret = "";
+    };
+    ldap = {
+      user = "";
+      password = "";
+    };
+    admin = {
+      email = "";
+    };
+    s3 = {
+      id = "";
+      key = "";
+    };
+  };
+
+  ipv4 = {
+    addresses = [
+      { address = ""; prefixLength = 27; }
+    ];
+    routes = [
+      { address = "0.0.0.0"; prefixLength = 0; via = ""; }
+    ];
+  };
+  ipv6 = {
+    addresses = [
+      { address = ""; prefixLength = 64; }
+    ];
+    routes = [
+      { address = "::"; prefixLength = 0; via = "fe80::1"; }
+    ];
+  };
+}