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Move user captcha code to its own module

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This commit is contained in:
Samantaz Fox
2022-02-04 03:44:10 +01:00
parent c04f45d5e3
commit ad4a06fca5
4 changed files with 87 additions and 79 deletions
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15
src/invidious.cr
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@@ -38,14 +38,13 @@ require "./invidious/jobs/**"
CONFIG = Config.load
HMAC_KEY = CONFIG.hmac_key || Random::Secure.hex(32)
PG_DB = DB.open CONFIG.database_url
ARCHIVE_URL = URI.parse("https://archive.org")
LOGIN_URL = URI.parse("https://accounts.google.com")
PUBSUB_URL = URI.parse("https://pubsubhubbub.appspot.com")
REDDIT_URL = URI.parse("https://www.reddit.com")
TEXTCAPTCHA_URL = URI.parse("https://textcaptcha.com")
YT_URL = URI.parse("https://www.youtube.com")
HOST_URL = make_host_url(Kemal.config)
PG_DB = DB.open CONFIG.database_url
ARCHIVE_URL = URI.parse("https://archive.org")
LOGIN_URL = URI.parse("https://accounts.google.com")
PUBSUB_URL = URI.parse("https://pubsubhubbub.appspot.com")
REDDIT_URL = URI.parse("https://www.reddit.com")
YT_URL = URI.parse("https://www.youtube.com")
HOST_URL = make_host_url(Kemal.config)
CHARS_SAFE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
TEST_IDS = {"AgbeGFYluEA", "BaW_jenozKc", "a9LDPn-MO4I", "ddFvjfvPnqk", "iqKdEhx-dD4"}

4
src/invidious/routes/login.cr
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@@ -393,9 +393,9 @@ module Invidious::Routes::Login
prompt = ""
if captcha_type == "image"
captcha = generate_captcha(HMAC_KEY)
captcha = Invidious::User::Captcha.generate_image(HMAC_KEY)
else
captcha = generate_text_captcha(HMAC_KEY)
captcha = Invidious::User::Captcha.generate_text(HMAC_KEY)
end
return templated "login"

78
src/invidious/user/captcha.cr Normal file
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@@ -0,0 +1,78 @@
require "openssl/hmac"
struct Invidious::User
module Captcha
extend self
private TEXTCAPTCHA_URL = URI.parse("https://textcaptcha.com")
def generate_image(key)
second = Random::Secure.rand(12)
second_angle = second * 30
second = second * 5
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" height="200px">
<circle cx="50" cy="50" r="45" fill="#eee" stroke="black" stroke-width="2"></circle>
<text x="69" y="20.091" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 1</text>
<text x="82.909" y="34" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 2</text>
<text x="88" y="53" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 3</text>
<text x="82.909" y="72" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 4</text>
<text x="69" y="85.909" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 5</text>
<text x="50" y="91" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 6</text>
<text x="31" y="85.909" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 7</text>
<text x="17.091" y="72" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 8</text>
<text x="12" y="53" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 9</text>
<text x="17.091" y="34" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">10</text>
<text x="31" y="20.091" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">11</text>
<text x="50" y="15" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">12</text>
<circle cx="50" cy="50" r="3" fill="black"></circle>
<line id="second" transform="rotate(#{second_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="12" fill="black" stroke="black" stroke-width="1"></line>
<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
image = "data:image/png;base64,"
image += Process.run(%(rsvg-convert -w 400 -h 400 -b none -f png), shell: true,
input: IO::Memory.new(clock_svg), output: Process::Redirect::Pipe
) do |proc|
Base64.strict_encode(proc.output.gets_to_end)
end
answer = "#{hour}:#{minute.to_s.rjust(2, '0')}:#{second.to_s.rjust(2, '0')}"
answer = OpenSSL::HMAC.hexdigest(:sha256, key, answer)
return {
question: image,
tokens: {generate_response(answer, {":login"}, key, use_nonce: true)},
}
end
def generate_text(key)
response = make_client(TEXTCAPTCHA_URL, &.get("/github.com/iv.org/invidious.json").body)
response = JSON.parse(response)
tokens = response["a"].as_a.map do |answer|
generate_response(answer.as_s, {":login"}, key, use_nonce: true)
end
return {
question: response["q"].as_s,
tokens: tokens,
}
end
end
end

69
src/invidious/users.cr
View File

@@ -91,75 +91,6 @@ def create_user(sid, email, password)
return user, sid
end
def generate_captcha(key)
second = Random::Secure.rand(12)
second_angle = second * 30
second = second * 5
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" height="200px">
<circle cx="50" cy="50" r="45" fill="#eee" stroke="black" stroke-width="2"></circle>
<text x="69" y="20.091" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 1</text>
<text x="82.909" y="34" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 2</text>
<text x="88" y="53" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 3</text>
<text x="82.909" y="72" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 4</text>
<text x="69" y="85.909" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 5</text>
<text x="50" y="91" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 6</text>
<text x="31" y="85.909" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 7</text>
<text x="17.091" y="72" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 8</text>
<text x="12" y="53" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 9</text>
<text x="17.091" y="34" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">10</text>
<text x="31" y="20.091" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">11</text>
<text x="50" y="15" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">12</text>
<circle cx="50" cy="50" r="3" fill="black"></circle>
<line id="second" transform="rotate(#{second_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="12" fill="black" stroke="black" stroke-width="1"></line>
<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
image = "data:image/png;base64,"
image += Process.run(%(rsvg-convert -w 400 -h 400 -b none -f png), shell: true,
input: IO::Memory.new(clock_svg), output: Process::Redirect::Pipe
) do |proc|
Base64.strict_encode(proc.output.gets_to_end)
end
answer = "#{hour}:#{minute.to_s.rjust(2, '0')}:#{second.to_s.rjust(2, '0')}"
answer = OpenSSL::HMAC.hexdigest(:sha256, key, answer)
return {
question: image,
tokens: {generate_response(answer, {":login"}, key, use_nonce: true)},
}
end
def generate_text_captcha(key)
response = make_client(TEXTCAPTCHA_URL, &.get("/github.com/iv.org/invidious.json").body)
response = JSON.parse(response)
tokens = response["a"].as_a.map do |answer|
generate_response(answer.as_s, {":login"}, key, use_nonce: true)
end
return {
question: response["q"].as_s,
tokens: tokens,
}
end
def subscribe_ajax(channel_id, action, env_headers)
headers = HTTP::Headers.new
headers["Cookie"] = env_headers["Cookie"]