Add separate user accounts

config/sql/users.sql

@@ -10,6 +10,7 @@ CREATE TABLE public.users
     subscriptions text[] COLLATE pg_catalog."default",
     email text COLLATE pg_catalog."default" NOT NULL,
     preferences text COLLATE pg_catalog."default",
+    password text COLLATE pg_catalog."default",
     CONSTRAINT users_email_key UNIQUE (email),
     CONSTRAINT users_id_key UNIQUE (id)
 )

src/invidious.cr

@@ -14,8 +14,10 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+require "crypto/bcrypt/password"
 require "detect_language"
 require "kemal"
+require "openssl/hmac"
 require "option_parser"
 require "pg"
 require "xml"
@@ -23,6 +25,7 @@ require "yaml"
 require "./invidious/*"
 
 CONFIG   = Config.from_yaml(File.read("config/config.yml"))
+HMAC_KEY = Random::Secure.random_bytes(32)
 
 crawl_threads = CONFIG.crawl_threads
 channel_threads = CONFIG.channel_threads
@@ -233,6 +236,14 @@ before_all do |env|
 
     sid = env.request.cookies["SID"].value
 
+    # Invidious users only have SID
+    if !env.request.cookies.has_key? "SSID"
+      user = PG_DB.query_one?("SELECT * FROM users WHERE id = $1", sid, as: User)
+
+      if user
+        env.set "user", user
+      end
+    else
       begin
         client = make_client(YT_URL)
         user = get_user(sid, client, headers, PG_DB, false)
@@ -242,6 +253,7 @@ before_all do |env|
       end
     end
   end
+end
 
 get "/" do |env|
   templated "index"
@@ -514,9 +526,21 @@ get "/search" do |env|
 end
 
 get "/login" do |env|
+  user = env.get? "user"
+  if user
+    next env.redirect "/feed/subscriptions"
+  end
+
   referer = env.request.headers["referer"]?
   referer ||= "/feed/subscriptions"
 
+  account_type = env.params.query["type"]?
+  account_type ||= "google"
+
+  if account_type == "invidious"
+    captcha = generate_captcha(HMAC_KEY)
+  end
+
   tfa = env.params.query["tfa"]?
   tfa ||= false
 
@@ -538,6 +562,11 @@ post "/login" do |env|
 
   email = env.params.body["email"]?
   password = env.params.body["password"]?
+
+  account_type = env.params.query["type"]?
+  account_type ||= "google"
+
+  if account_type == "google"
     tfa_code = env.params.body["tfa"]?.try &.lchop("G-")
 
     begin
@@ -680,6 +709,90 @@ post "/login" do |env|
       error_message = "Login failed. This may be because two-factor authentication is not enabled on your account."
       next templated "error"
     end
+  elsif account_type == "invidious"
+    challenge_response = env.params.body["challenge_response"]?
+    token = env.params.body["token"]?
+
+    action = env.params.body["action"]?
+    action ||= "signin"
+
+    if !email
+      error_message = "User ID is a required field"
+      next templated "error"
+    end
+
+    if !password
+      error_message = "Password is a required field"
+      next templated "error"
+    end
+
+    if !challenge_response || !token
+      error_message = "CAPTCHA is a required field"
+      next templated "error"
+    end
+
+    challenge_response = challenge_response.lstrip('0')
+    if OpenSSL::HMAC.digest(:sha256, HMAC_KEY, challenge_response) == Base64.decode(token)
+    else
+      error_message = "Invalid CAPTCHA response"
+      next templated "error"
+    end
+
+    if action == "signin"
+      user = PG_DB.query_one?("SELECT * FROM users WHERE email = $1 AND password IS NOT NULL", email, as: User)
+
+      if !user
+        error_message = "Cannot find user with ID #{email}."
+        next templated "error"
+      end
+
+      if !user.password
+        error_message = "Account appears to be a Google account."
+        next templated "error"
+      end
+
+      if Crypto::Bcrypt::Password.new(user.password.not_nil!) == password
+        sid = Base64.encode(Random::Secure.random_bytes(50))
+        PG_DB.exec("UPDATE users SET id = $1 WHERE email = $2", sid, email)
+
+        if Kemal.config.ssl
+          secure = true
+        else
+          secure = false
+        end
+
+        env.response.cookies["SID"] = HTTP::Cookie.new(name: "SID", value: sid, expires: Time.now + 2.years, secure: secure, http_only: true)
+      else
+        error_message = "Invalid password"
+        next templated "error"
+      end
+    elsif action == "register"
+      user = PG_DB.query_one?("SELECT * FROM users WHERE email = $1 AND password IS NOT NULL", email, as: User)
+      if user
+        error_message = "User already exists, please sign in"
+        next templated "error"
+      end
+
+      sid = Base64.encode(Random::Secure.random_bytes(50))
+      user = create_user(sid, email, password)
+
+      user_array = user.to_a
+      user_array[5] = user_array[5].to_json
+      args = arg_array(user_array)
+
+      PG_DB.exec("INSERT INTO users VALUES (#{args})", user_array)
+
+      if Kemal.config.ssl
+        secure = true
+      else
+        secure = false
+      end
+
+      env.response.cookies["SID"] = HTTP::Cookie.new(name: "SID", value: sid, expires: Time.now + 2.years, secure: secure, http_only: true)
+    end
+
+    env.redirect referer
+  end
 end
 
 get "/signout" do |env|
@@ -782,8 +895,10 @@ get "/feed/subscriptions" do |env|
     headers = HTTP::Headers.new
     headers["Cookie"] = env.request.headers["Cookie"]
 
+    if !user.password
       client = make_client(YT_URL)
       user = get_user(user.id, client, headers, PG_DB)
+    end
 
     max_results = preferences.max_results
     max_results ||= env.params.query["maxResults"]?.try &.to_i
@@ -903,15 +1018,15 @@ get "/subscription_manager" do |env|
 
   user = user.as(User)
 
+  if !user.password
     # Refresh account
     headers = HTTP::Headers.new
     headers["Cookie"] = env.request.headers["Cookie"]
 
     client = make_client(YT_URL)
     user = get_user(user.id, client, headers, PG_DB)
-
+  end
   subscriptions = user.subscriptions
-  subscriptions ||= [] of String
 
   client = make_client(YT_URL)
   subscriptions = subscriptions.map do |ucid|
@@ -941,6 +1056,7 @@ get "/subscription_ajax" do |env|
     channel_id = env.params.query["c"]?
     channel_id ||= ""
 
+    if !user.password
       headers = HTTP::Headers.new
       headers["Cookie"] = env.request.headers["Cookie"]
 
@@ -973,6 +1089,21 @@ get "/subscription_ajax" do |env|
           PG_DB.exec("UPDATE users SET subscriptions = array_remove(subscriptions,$1) WHERE id = $2", channel_id, sid)
         end
       end
+    else
+      sid = user.id
+
+      case action
+      when .starts_with? "action_create"
+        if !user.subscriptions.includes? channel_id
+          PG_DB.exec("UPDATE users SET subscriptions = array_append(subscriptions,$1) WHERE id = $2", channel_id, sid)
+
+          client = make_client(YT_URL)
+          get_channel(channel_id, client, PG_DB, false, false)
+        end
+      when .starts_with? "action_remove"
+        PG_DB.exec("UPDATE users SET subscriptions = array_remove(subscriptions,$1) WHERE id = $2", channel_id, sid)
+      end
+    end
   end
 
   env.redirect referer

src/invidious/helpers.cr

@@ -138,6 +138,7 @@ class User
       default:   DEFAULT_USER_PREFERENCES,
       converter: PreferencesConverter,
     },
+    password: String?,
   })
 end
 
@@ -814,7 +815,14 @@ def fetch_user(sid, client, headers, db)
     email = ""
   end
 
-  user = User.new(sid, Time.now, [] of String, channels, email, DEFAULT_USER_PREFERENCES)
+  user = User.new(sid, Time.now, [] of String, channels, email, DEFAULT_USER_PREFERENCES, nil)
+  return user
+end
+
+def create_user(sid, email, password)
+  password = Crypto::Bcrypt::Password.create(password, cost: 10)
+  user = User.new(sid, Time.now, [] of String, [] of String, email, DEFAULT_USER_PREFERENCES, password.to_s)
+
   return user
 end
 
@@ -947,3 +955,54 @@ def write_var_int(value : Int)
 
   return bytes
 end
+
+def generate_captcha(key)
+  minute = Random::Secure.rand(12)
+  minute_angle = minute * 30
+  minute = minute * 5
+
+  hour = Random::Secure.rand(12)
+  hour_angle = hour * 30 + minute_angle.to_f / 12
+  if hour == 0
+    hour = 12
+  end
+
+  clock_svg = <<-END_SVG
+  <svg viewBox="0 0 100 100" width="200px">
+  <circle cx="50" cy="50" r="45" fill="#eee" stroke="black" stroke-width="2"></circle>
+  
+  <circle id="hour1" cx="69" cy="17.091" r="2" fill="black"></circle>
+  <circle id="hour2" cx="82.909" cy="31" r="2" fill="black"></circle>
+  <circle id="hour3" cx="88" cy="50" r="2" fill="black"></circle>
+  
+  <circle id="hour4" cx="82.909" cy="69" r="2" fill="black"></circle>
+  <circle id="hour5" cx="69" cy="82.909" r="2" fill="black"></circle>
+  <circle id="hour6" cx="50" cy="88" r="2" fill="black"></circle>
+  
+  <circle id="hour7" cx="31" cy="82.909" r="2" fill="black"></circle>
+  <circle id="hour8" cx="17.091" cy="69" r="2" fill="black"></circle>
+  <circle id="hour9" cx="12" cy="50" r="2" fill="black"></circle>
+  
+  <circle id="hour10" cx="17.091" cy="31" r="2" fill="black"></circle>
+  <circle id="hour11" cx="31" cy="17.091" r="2" fill="black"></circle>
+  <circle id="hour12" cx="50" cy="12" r="2" fill="black"></circle>
+  
+  <circle cx="50" cy="50" r="3" fill="black"></circle>
+  <line id="minute" transform="rotate(#{minute_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="16" fill="black" stroke="black" stroke-width="2"></line>
+  <line id="hour"   transform="rotate(#{hour_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="24" fill="black" stroke="black" stroke-width="2"></line>
+  </svg>
+  END_SVG
+
+  challenge = ""
+  convert = Process.run(%(convert -density 1200 -resize 400x400 -background none svg:- png:-), shell: true, input: IO::Memory.new(clock_svg), output: Process::Redirect::Pipe) do |proc|
+    challenge = proc.output.gets_to_end
+    challenge = Base64.encode(challenge)
+    challenge = "data:image/png; base64, #{challenge}"
+  end
+
+  answer = "#{hour}:#{minute.to_s.rjust(2, '0')}"
+  token = OpenSSL::HMAC.digest(:sha256, key, answer)
+  token = Base64.encode(token)
+
+  return {challenge: challenge, token: token}
+end

src/invidious/views/login.ecr

@@ -6,24 +6,51 @@
     <div class="pure-u-1 pure-u-md-1-5"></div>
     <div class="pure-u-1 pure-u-md-3-5">
         <div class="h-box">
+            <div class="pure-g">
+                <div class="pure-u-1 pure-u-md-1-2">
+                    <a class="pure-button <% if account_type == "google" %>pure-button-disabled<% end %>" href="/login">Login to Google</a>
+                </div>
+                <div class="pure-u-1 pure-u-md-1-2">
+                    <a class="pure-button <% if account_type == "invidious" %>pure-button-disabled<% end %>" href="/login?type=invidious">Login/Register</a>
+                </div>
+            </div>
+            <hr>
+            <% if account_type == "google" %>
             <form class="pure-form pure-form-stacked" action="/login?referer=<%= referer %>" method="post">
                 <fieldset>
-                    <legend>Login to Google</legend>
-
                     <label for="email">Email</label>
-                    <input class="pure-input-1" name="email" type="email" placeholder="Email">
+                    <input required class="pure-input-1" name="email" type="email" placeholder="Email">
 
                     <label for="password">Password</label>
-                    <input class="pure-input-1" name="password" type="password" placeholder="Password">
+                    <input required class="pure-input-1" name="password" type="password" placeholder="Password">
                     
                     <% if tfa %>
                     <label for="tfa">Google verification code</label>
-                    <input class="pure-input-1" name="tfa" type="text" placeholder="Google verification code">
+                    <input required class="pure-input-1" name="tfa" type="text" placeholder="Google verification code">
                     <% end %>
 
                     <button type="submit" class="pure-button pure-button-primary">Sign in</button>
                 </fieldset>
             </form>
+            <% elsif account_type == "invidious" %>
+            <form class="pure-form pure-form-stacked" action="/login?referer=<%= referer %>&type=invidious" method="post">
+                <fieldset>
+                    <label for="email">User ID:</label>
+                    <input required class="pure-input-1" name="email" type="text" placeholder="User ID">
+
+                    <label for="password">Password</label>
+                    <input required class="pure-input-1" name="password" type="password" placeholder="Password">
+                
+                    <img src='<%= captcha.not_nil![:challenge] %>'/>
+                    <input type="hidden" name="token" value="<%= captcha.not_nil![:token] %>">
+                    <label for="challenge_response">Time (hh:mm):</label>
+                    <input required type="text" name="challenge_response" type="text>" placeholder="hh:mm">
+
+                    <button type="submit" name="action" value="signin" class="pure-button pure-button-primary">Sign In</button>
+                    <button type="submit" name="action" value="register" class="pure-button pure-button-primary">Register</button>
+                </fieldset>
+            </form>
+            <% end %>
         </div>
     </div>
     <div class="pure-u-1 pure-u-md-1-5"></div>