77 lines
1.9 KiB
Ruby
77 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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class JiraConnect::ApplicationController < ApplicationController
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include Gitlab::Utils::StrongMemoize
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skip_before_action :authenticate_user!
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skip_before_action :verify_authenticity_token
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before_action :verify_atlassian_jwt!
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feature_category :integrations
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attr_reader :current_jira_installation
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private
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def verify_atlassian_jwt!
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return render_403 unless atlassian_jwt_valid?
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@current_jira_installation = installation_from_jwt
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end
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def verify_qsh_claim!
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payload, _ = decode_auth_token!
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# Make sure `qsh` claim matches the current request
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render_403 unless payload['qsh'] == Atlassian::Jwt.create_query_string_hash(request.url, request.method, jira_connect_base_url)
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rescue StandardError
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render_403
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end
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def atlassian_jwt_valid?
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return false unless installation_from_jwt
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# Verify JWT signature with our stored `shared_secret`
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decode_auth_token!
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rescue JWT::DecodeError
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false
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end
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def installation_from_jwt
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strong_memoize(:installation_from_jwt) do
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next unless claims['iss']
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JiraConnectInstallation.find_by_client_key(claims['iss'])
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end
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end
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def claims
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strong_memoize(:claims) do
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next {} unless auth_token
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# Decode without verification to get `client_key` in `iss`
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payload, _ = Atlassian::Jwt.decode(auth_token, nil, false)
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payload
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end
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end
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def jira_user
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strong_memoize(:jira_user) do
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next unless installation_from_jwt
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next unless claims['sub']
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# This only works for Jira Cloud installations.
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installation_from_jwt.client.user_info(claims['sub'])
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end
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end
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def decode_auth_token!
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Atlassian::Jwt.decode(auth_token, installation_from_jwt.shared_secret)
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end
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def auth_token
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strong_memoize(:auth_token) do
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params[:jwt] || request.headers['Authorization']&.split(' ', 2)&.last
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end
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end
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end
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