Don't require CAPTCHA for login

This commit is contained in:
Omar Roth 2019-03-19 16:13:23 -05:00
parent 21285d9f6d
commit 9091b36249
3 changed files with 161 additions and 120 deletions

View File

@ -760,37 +760,22 @@ get "/login" do |env|
referer = get_referer(env, "/feed/subscriptions") referer = get_referer(env, "/feed/subscriptions")
email = nil
password = nil
captcha = nil
account_type = env.params.query["type"]? account_type = env.params.query["type"]?
account_type ||= "invidious" account_type ||= "invidious"
captcha_type = env.params.query["captcha"]? captcha_type = env.params.query["captcha"]?
captcha_type ||= "image" captcha_type ||= "image"
if account_type == "invidious"
if captcha_type == "image"
captcha = generate_captcha(HMAC_KEY, PG_DB)
else
response = HTTP::Client.get(TEXTCAPTCHA_URL).body
response = JSON.parse(response)
tokens = response["a"].as_a.map do |answer|
create_response(answer.as_s, "sign_in", HMAC_KEY, PG_DB)
end
text_captcha = {
question: response["q"].as_s,
tokens: tokens,
}
end
end
tfa = env.params.query["tfa"]? tfa = env.params.query["tfa"]?
tfa ||= false tfa ||= false
templated "login" templated "login"
end end
# See https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/youtube.py#L79
post "/login" do |env| post "/login" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]? locale = LOCALES[env.get("preferences").as(Preferences).locale]?
@ -805,11 +790,13 @@ post "/login" do |env|
password = env.params.body["password"]? password = env.params.body["password"]?
account_type = env.params.query["type"]? account_type = env.params.query["type"]?
account_type ||= "google" account_type ||= "invidious"
if account_type == "google" case account_type
when "google"
tfa_code = env.params.body["tfa"]?.try &.lchop("G-") tfa_code = env.params.body["tfa"]?.try &.lchop("G-")
# See https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/youtube.py#L79
begin begin
client = make_client(LOGIN_URL) client = make_client(LOGIN_URL)
headers = HTTP::Headers.new headers = HTTP::Headers.new
@ -911,7 +898,11 @@ post "/login" do |env|
end end
if !tfa_code if !tfa_code
next env.redirect "/login?tfa=true&type=google&referer=#{URI.escape(referer)}" account_type = "google"
captcha_type = "image"
tfa = true
captcha = nil
next templated "login"
end end
tl = challenge_results[1][2] tl = challenge_results[1][2]
@ -976,6 +967,7 @@ post "/login" do |env|
cookie.extension = cookie.extension.not_nil!.gsub(".youtube.com", host) cookie.extension = cookie.extension.not_nil!.gsub(".youtube.com", host)
cookie.extension = cookie.extension.not_nil!.gsub("Secure; ", "") cookie.extension = cookie.extension.not_nil!.gsub("Secure; ", "")
env.response.cookies << cookie
end end
if env.request.cookies["PREFS"]? if env.request.cookies["PREFS"]?
@ -992,65 +984,7 @@ post "/login" do |env|
error_message = translate(locale, "Login failed. This may be because two-factor authentication is not enabled on your account.") error_message = translate(locale, "Login failed. This may be because two-factor authentication is not enabled on your account.")
next templated "error" next templated "error"
end end
elsif account_type == "invidious" when "invidious"
answer = env.params.body["answer"]?
text_answer = env.params.body["text_answer"]?
if config.captcha_enabled
if answer
answer = answer.lstrip('0')
answer = OpenSSL::HMAC.hexdigest(:sha256, HMAC_KEY, answer)
challenge = env.params.body["challenge"]?
token = env.params.body["token"]?
begin
validate_response(challenge, token, answer, "sign_in", HMAC_KEY, PG_DB, locale)
rescue ex
if ex.message == translate(locale, "Invalid user")
error_message = translate(locale, "Invalid answer")
else
error_message = ex.message
end
next templated "error"
end
elsif text_answer
text_answer = Digest::MD5.hexdigest(text_answer.downcase.strip)
challenges = env.params.body.select { |k, v| k.match(/text_challenge\d+/) }
tokens = env.params.body.select { |k, v| k.match(/text_token\d+/) }
found_valid_captcha = false
error_message = translate(locale, "Invalid CAPTCHA")
challenges.each_with_index do |challenge, i|
begin
challenge = challenge[1]
token = tokens[i][1]
validate_response(challenge, token, text_answer, "sign_in", HMAC_KEY, PG_DB, locale)
found_valid_captcha = true
rescue ex
if ex.message == translate(locale, "Invalid user")
error_message = translate(locale, "Invalid answer")
else
error_message = ex.message
end
end
end
if !found_valid_captcha
next templated "error"
end
else
error_message = translate(locale, "CAPTCHA is a required field")
next templated "error"
end
end
action = env.params.body["action"]?
action ||= "signin"
if !email if !email
error_message = translate(locale, "User ID is a required field") error_message = translate(locale, "User ID is a required field")
next templated "error" next templated "error"
@ -1061,14 +995,9 @@ post "/login" do |env|
next templated "error" next templated "error"
end end
if action == "signin" user = PG_DB.query_one?("SELECT * FROM users WHERE LOWER(email) = LOWER($1)", email, as: User)
user = PG_DB.query_one?("SELECT * FROM users WHERE LOWER(email) = LOWER($1)", email, as: User)
if !user
error_message = translate(locale, "Invalid username or password")
next templated "error"
end
if user
if !user.password if !user.password
error_message = translate(locale, "Please sign in using 'Sign in with Google'") error_message = translate(locale, "Please sign in using 'Sign in with Google'")
next templated "error" next templated "error"
@ -1102,12 +1031,78 @@ post "/login" do |env|
cookie.expires = Time.new(1990, 1, 1) cookie.expires = Time.new(1990, 1, 1)
env.response.cookies << cookie env.response.cookies << cookie
end end
elsif action == "register" else
if !config.registration_enabled if !config.registration_enabled
error_message = "Registration has been disabled by administrator." error_message = "Registration has been disabled by administrator."
next templated "error" next templated "error"
end end
if config.captcha_enabled
captcha_type = env.params.body["captcha_type"]?
answer = env.params.body["answer"]?
change_type = env.params.body["change_type"]?
if !captcha_type || change_type
if change_type
captcha_type = change_type
end
captcha_type ||= "image"
account_type = "invidious"
tfa = false
if captcha_type == "image"
captcha = generate_captcha(HMAC_KEY, PG_DB)
else
captcha = generate_text_captcha(HMAC_KEY, PG_DB)
end
next templated "login"
end
challenges = env.params.body.select { |k, v| k.match(/^challenge\[\d+\]$/) }
tokens = env.params.body.select { |k, v| k.match(/^token\[\d+\]$/) }
answer ||= ""
captcha_type ||= "image"
case captcha_type
when "image"
answer = answer.lstrip('0')
answer = OpenSSL::HMAC.hexdigest(:sha256, HMAC_KEY, answer)
challenge = env.params.body["challenge[0]"]?
token = env.params.body["token[0]"]?
begin
validate_response(challenge, token, answer, "sign_in", HMAC_KEY, PG_DB, locale)
rescue ex
error_message = ex.message
next templated "error"
end
when "text"
answer = Digest::MD5.hexdigest(answer.downcase.strip)
found_valid_captcha = false
error_message = translate(locale, "Invalid CAPTCHA")
challenges.each_with_index do |challenge, i|
begin
challenge = challenge[1]
token = tokens[i][1]
validate_response(challenge, token, answer, "sign_in", HMAC_KEY, PG_DB, locale)
found_valid_captcha = true
rescue ex
error_message = ex.message
end
end
if !found_valid_captcha
next templated "error"
end
end
end
if password.empty? if password.empty?
error_message = translate(locale, "Password cannot be empty") error_message = translate(locale, "Password cannot be empty")
next templated "error" next templated "error"
@ -1165,6 +1160,8 @@ post "/login" do |env|
end end
end end
env.redirect referer
else
env.redirect referer env.redirect referer
end end
end end

View File

@ -328,7 +328,22 @@ def generate_captcha(key, db)
answer = "#{hour}:#{minute.to_s.rjust(2, '0')}:#{second.to_s.rjust(2, '0')}" answer = "#{hour}:#{minute.to_s.rjust(2, '0')}:#{second.to_s.rjust(2, '0')}"
answer = OpenSSL::HMAC.hexdigest(:sha256, key, answer) answer = OpenSSL::HMAC.hexdigest(:sha256, key, answer)
challenge, token = create_response(answer, "sign_in", key, db) return {
question: image,
return {image: image, challenge: challenge, token: token} tokens: [create_response(answer, "sign_in", key, db)],
}
end
def generate_text_captcha(key, db)
response = HTTP::Client.get(TEXTCAPTCHA_URL).body
response = JSON.parse(response)
tokens = response["a"].as_a.map do |answer|
create_response(answer.as_s, "sign_in", key, db)
end
return {
question: response["q"].as_s,
tokens: tokens,
}
end end

View File

@ -8,7 +8,7 @@
<div class="h-box"> <div class="h-box">
<div class="pure-g"> <div class="pure-g">
<div class="pure-u-1-2"> <div class="pure-u-1-2">
<a class="pure-button <% if account_type == "invidious" %>pure-button-disabled<% end %>" href="/login"> <a class="pure-button <% if account_type == "invidious" %>pure-button-disabled<% end %>" href="/login?type=invidious">
<%= translate(locale, "Login/Register") %> <%= translate(locale, "Login/Register") %>
</a> </a>
</div> </div>
@ -22,55 +22,84 @@
<% if account_type == "invidious" %> <% if account_type == "invidious" %>
<form class="pure-form pure-form-stacked" action="/login?referer=<%= URI.escape(referer) %>&type=invidious" method="post"> <form class="pure-form pure-form-stacked" action="/login?referer=<%= URI.escape(referer) %>&type=invidious" method="post">
<fieldset> <fieldset>
<% if email %>
<input name="email" type="hidden" value="<%= email %>">
<% else %>
<label for="email"><%= translate(locale, "User ID:") %></label> <label for="email"><%= translate(locale, "User ID:") %></label>
<input required class="pure-input-1" name="email" type="text" placeholder="User ID"> <input required class="pure-input-1" name="email" type="text" placeholder="User ID">
<% end %>
<% if password %>
<input name="password" type="hidden" value="<%= password %>">
<% else %>
<label for="password"><%= translate(locale, "Password:") %></label> <label for="password"><%= translate(locale, "Password:") %></label>
<input required class="pure-input-1" name="password" type="password" placeholder="Password"> <input required class="pure-input-1" name="password" type="password" placeholder="Password">
<% end %>
<% if config.captcha_enabled %> <% if captcha %>
<% if captcha_type == "image" %> <% case captcha_type when %>
<img style="width:100%" src='<%= captcha.not_nil![:image] %>'/> <% when "image" %>
<input type="hidden" name="token" value="<%= captcha.not_nil![:token] %>"> <% captcha = captcha.not_nil! %>
<input type="hidden" name="challenge" value="<%= captcha.not_nil![:challenge] %>"> <img style="width:100%" src='<%= captcha[:question] %>'/>
<label for="answer"><%= translate(locale, "Time (h:mm:ss):") %></label> <% captcha[:tokens].each_with_index do |token, i| %>
<input required type="text" name="answer" type="text" placeholder="h:mm:ss"> <input type="hidden" name="challenge[<%= i %>]" value="<%= token[0] %>">
<input type="hidden" name="token[<%= i %>]" value="<%= token[1] %>">
<label>
<a href="/login?referer=<%= URI.escape(referer) %>&type=invidious&captcha=text">
<%= translate(locale, "Text CAPTCHA") %>
</a>
</label>
<% else %>
<% text_captcha.not_nil![:tokens].each_with_index do |token, i| %>
<input type="hidden" name="text_challenge<%= i %>" value="<%= token[0] %>">
<input type="hidden" name="text_token<%= i %>" value="<%= token[1] %>">
<% end %> <% end %>
<label for="text_answer"><%= text_captcha.not_nil![:question] %></label> <input type="hidden" name="captcha_type" value="image">
<input required type="text" name="text_answer" type="text" placeholder="Answer"> <label for="answer"><%= translate(locale, "Time (h:mm:ss):") %></label>
<input type="text" name="answer" type="text" placeholder="h:mm:ss">
<% when "text" %>
<% captcha = captcha.not_nil! %>
<% captcha[:tokens].each_with_index do |token, i| %>
<input type="hidden" name="challenge[<%= i %>]" value="<%= token[0] %>">
<input type="hidden" name="token[<%= i %>]" value="<%= token[1] %>">
<% end %>
<input type="hidden" name="captcha_type" value="text">
<label for="answer"><%= captcha[:question] %></label>
<input type="text" name="answer" type="text" placeholder="Answer">
<% end %>
<button type="submit" name="action" value="signin" class="pure-button pure-button-primary">
<%= translate(locale, "Register") %>
</button>
<% case captcha_type when %>
<% when "image" %>
<label> <label>
<a href="/login?referer=<%= URI.escape(referer) %>&type=invidious"> <button type="submit" name="change_type" class="pure-button pure-button-primary" value="text">
<%= translate(locale, "Text CAPTCHA") %>
</button>
</label>
<% when "text" %>
<label>
<button type="submit" name="change_type" class="pure-button pure-button-primary" value="image">
<%= translate(locale, "Image CAPTCHA") %> <%= translate(locale, "Image CAPTCHA") %>
</a> </button>
</label> </label>
<% end %> <% end %>
<% else %>
<button type="submit" name="action" value="signin" class="pure-button pure-button-primary">
<%= translate(locale, "Sign In") %>/<%= translate(locale, "Register") %>
</button>
<% end %> <% end %>
<button type="submit" name="action" value="signin" class="pure-button pure-button-primary"><%= translate(locale, "Sign In") %></button>
<% if config.registration_enabled %>
<button type="submit" name="action" value="register" class="pure-button pure-button-primary"><%= translate(locale, "Register") %></button>
<% end %>
</fieldset> </fieldset>
</form> </form>
<% elsif account_type == "google" %> <% elsif account_type == "google" %>
<form class="pure-form pure-form-stacked" action="/login?referer=<%= URI.escape(referer) %>" method="post"> <form class="pure-form pure-form-stacked" action="/login?referer=<%= URI.escape(referer) %>&type=google" method="post">
<fieldset> <fieldset>
<% if email %>
<input name="email" type="hidden" value="<%= email %>">
<% else %>
<label for="email"><%= translate(locale, "Email:") %></label> <label for="email"><%= translate(locale, "Email:") %></label>
<input required class="pure-input-1" name="email" type="email" placeholder="Email"> <input required class="pure-input-1" name="email" type="email" placeholder="Email">
<% end %>
<% if password %>
<input name="password" type="hidden" value="<%= password %>">
<% else %>
<label for="password"><%= translate(locale, "Password:") %></label> <label for="password"><%= translate(locale, "Password:") %></label>
<input required class="pure-input-1" name="password" type="password" placeholder="Password"> <input required class="pure-input-1" name="password" type="password" placeholder="Password">
<% end %>
<% if tfa %> <% if tfa %>
<label for="tfa"><%= translate(locale, "Google verification code:") %></label> <label for="tfa"><%= translate(locale, "Google verification code:") %></label>