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久々にコードを書いてOmniauthでハマった話
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Hiroaki Ninomiya
March 24, 2021
Programming
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久々にコードを書いてOmniauthでハマった話
Fukuoka.rb 200回 LT大会 (#202)
https://fukuokarb.connpass.com/event/206956/
Hiroaki Ninomiya
March 24, 2021
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Transcript
OmniauthͰϋϚͬͨ 2021/03/24 Fukuoka.rb 200ճLTେձ @treby006
About Me • treby (ͱΕͼʔ) • @treby006 • Shinjuku.rbͷੈ
About Me • ࣮(?)Ԭग़ • Ԭࢢ౦۠/۠ɺେໂాࢢʹ༝ԑ͕͋Γ·͢
About Me • ಠཱܥϕϯνϟʔΩϟϐλϧۈ • ελʔτΞοϓ͖͕ߴͯ͡ग़ࢿଆʹ • ҎલBtoCBtoBͷελʔτΞοϓͰRailsΤϯδχΞ • Rubyք۾ͩͱʮjoker͞Μ͕͍Δͱ͜ʯͰ௨͡Δ͔Βָ
• ITΛऔΓѻ͏͚ͲɺۀͰίʔυॻ͔ͳ͍
About Me • ಠཱܥϕϯνϟʔΩϟϐλϧۈ • ελʔτΞοϓ͖͕ߴͯ͡ग़ࢿଆʹ • ҎલBtoCBtoBͷελʔτΞοϓͰRailsΤϯδχΞ • Rubyք۾ͩͱʮjoker͞Μ͕͍Δͱ͜ʯͰ௨͡Δ͔Βָ
• ITΛऔΓѻ͏͚ͲɺۀͰίʔυॻ͔ͳ͍ => ͚Ͳॻ͖͍ͨ
ίʔυΛॻ͔ͳ͘ͳͬͯ͠·ͬͨਓ͋Δ͋ΔͷΈ • ࠷৽ͷٕज़ΛΩϟονΞοϓͰ͖ͳ͘ͳΔͷͰͳ͍͔ • ٕज़ྗ͕མͪͯ͠·͏ͷͰͳ͍͔ • ࣍ʹస৬ͨ͠ͱ͖ʹ։ൃऀͱͯ͠৯͍ͬͺ͙ΕΔͷͰͳ͍͔ • ͍͔ͭ͠ΩϟϦΞ͕த్ʹͳͬͯ͠·͏ͷͰͳ͍͔ •
ݱײ͕ͳ͘ͳͬͯ͠·͏ͷͰͳ͍͔
ίʔυΛॻ͔ͳ͘ͳͬͯ͠·ͬͨਓ͋Δ͋ΔͷΈ • ࠷৽ͷٕज़ΛΩϟονΞοϓͰ͖ͳ͘ͳΔͷͰͳ͍͔ • ٕज़ྗ͕མͪͯ͠·͏ͷͰͳ͍͔ • ࣍ʹస৬ͨ͠ͱ͖ʹ։ൃऀͱͯ͠৯͍ͬͺ͙ΕΔͷͰͳ͍͔ • ͍͔ͭ͠ΩϟϦΞ͕த్ʹͳͬͯ͠·͏ͷͰͳ͍͔ •
ݱײ͕ͳ͘ͳͬͯ͠·͏ͷͰͳ͍͔
ݱײ͕ͳ͘ͳΔͱԿ͕ྑ͘ͳ͍ͷ͔ • ۀ্ͷೳྗ͕Լ: ࢿݕ౼ͷࡍͷ։ൃྗݟཱͯ(σϡʔσϦδΣϯε) • ར͖͕Ͱ͖ͳ͘ͳ͍ͬͯ͘ͷͰʁ • ઐՈͱͯ͠ίϝϯτ͢Δ༰্͕Γͯ͠͠·͏ͷͰʁ • ͋Δࣄྫʹ৮Εͨ࣌ʹʮࣗͷݴ༿ʯͰͤͳ͍Ͳ͔͠͞
• ͰɺͲ͏͢Δʁ
ͦ͏ͩɺ։ൃ͠Α͏
αΠυϓϩδΣΫτɺ͡Ί·ͨ͠ • ਓͱझຯϓϩμΫτ࡞Γ / ։ൃΛঠ͢ΔཱͪҐஔ • LINEͷϛχΞϓϦ(ࠓεςϧε) / ۙʑ͓൸࿐Ͱ͖Δͱྑ͍ͳ •
جຊతʹθϩ͔Βͷ্ཱͪ͛(1݄ʙ) • ։ൃج൫࡞ΓνʔϜϏϧσΟϯάͰָ͖͍ͯ͠
γεςϜߏਤ
ٕज़ελοΫ • ϑϩϯτ(LIFFΞϓϦ): Vue CLI (webpackerෆ༻) • Next.js on Vercel
• αʔό: Rails 6.1.3 (Ruby 3.0) on Heroku • omniauth • administrate • ridgepole • crono_trigger
ٕज़ελοΫ • ϑϩϯτ(LIFFΞϓϦ): Vue CLI (webpackerෆ༻) • Next.js on Vercel
• αʔό: Rails 6.1.3 (Ruby 3.0) on Heroku • omniauth • administrate • ridgepole • crono_trigger
omniauth • ϚϧνϓϩόΠμͷೝূΛఏڙ͢Δgem • ʮSNSϩάΠϯʯΛ࣮͢Δͷʹྑ͘ΘΕΔΠϝʔδ • ࣮ʹར༻͍ͨ͠ϓϩόΠμ͚ͷϓϥάΠϯ͕ඞཁ • omniauth-twitteromniauth-githubͳͲ •
ཧը໘ͷ؆қϩάΠϯػೳͷͨΊʹ࠾༻ • LINEͷϛχΞϓϦͳͷͰLINEͱੑ͕ߴ͍ • omniauth-line ͱҰॹʹಋೖͯ͠LINEϩάΠϯ࣮ͩʂ
ಋೖ؆୯ • omniauth gemͱ͍͍ͨϓϩόΠμͷgemΛbundleͯ͠ Gemfile gem 'omniauth' gem 'omniauth-line'
ίʔϧόοΫΛड͚͚ΔΑ͏ʹͯ͠ • SessionsController ͱϧʔςΟϯάͷ४උ config/routes.rb get '/auth/:provider/callback', to: 'sessions#callback' post
'/auth/:provider/callback', to: 'sessions#callback' get '/logout', to: 'sessions#destroy', as: :logout
ϩάΠϯඞཁͳActionʹϦμΠϨΫτΛઃఆ AdminController before_action :authenticate_admin def authenticate_admin if current_admin_challenger.nil? redirect_to '/admin/auth/line'
end end
Callback URLͷϗϫΠτϦετొ(LINE)
Α࣮͠ߦͩ
͏·͍͔͘ͳ͍orz
ఆ֎ͷΤϥʔͩͬͨͷͰ • ϧʔςΟϯά͕ؒҧ͍ͬͯΔͷͰͳ͍͔ • typoͳ͍͔ • omniauth-line ͕ϝϯς͞Ε͍ͯͳ͍ͷͰ • omniauth
ͷgem·ͰΈʹ͍ͬͨ
ḷΓண͍ͨͷ • omniauthͷ༷มߋ • 2019ࠒͷมߋͰͨ͠ɻࣗͷແ͞Α…… • എܠ: ੬ऑੑCVE-2015-9284 ରԠΒ͍͠ •
CSRF͞ΕΔϦεΫ͕͋ΔΑ • GETͰ͍͚Δ͔Βҙਤ͠ͳ͍ϩάΠϯͤ͞ΒΕΔΑͶ(ͱ͍͏ཧղ) • ੬ऑੑ͔ͩΒରԠͨ͠ํ͕ྑ͍ • ͪΐͬͱͤྑ͍ͷͰͳ͘ɺຯʹରԠ͕໘
ྑ͘ͳ͍͚ͲɺΦϓγϣϯΛແޮԽͯ͠ରԠ • ੬ऑੑΔΘ͚Ͱ͕͢ɺҰ୴ྑ͍͔ͳɺͱ͍͏அ • ͜ΕͰಈ͖·ͨ͠ config/initializers/omniauth.rb Rails.application.config.middleware.use OmniAuth::Builder do configure
do |config| config.allowed_request_methods = %i[get post] config.silence_get_warning = true end : end
ͪΌΜͱରԠ͢ΔͳΒ • gemͬΆ͍ͷଘࡏ͍ͯ͠Δ: ೖΕΕྑ͍ͱ͍͏Θ͚Ͱͳ͍? • https://github.com/cookpad/omniauth-railscsrfprotection • ҰճϩάΠϯϘλϯ͕͋Δϖʔδʹඈ͢ײ͡ • ϦμΠϨΫτͰPOSTͤ͞Δͷͬͯ͘͠ͳ͍ʁ
• ৄ͘͠ͳ͍ͷͰڭ͍͑ͯͩ͘͞><
·ͱΊ • αΠυϓϩδΣΫτ͍͍ͧ • ݱײɺഓ͍ͬͯͧ͘ʂ • gemͷߋ৽ʹશવ͍͍͚ͭͯͯͳͯ͘ϫϩλ • खΛಈ͔ͯٔ͠ΕΔ͜ͱେࣄ
એ • ϙουΩϟετΛ͍ͬͯΔͷͰྑ͔ͬͨΒௌ͍ͯͶ • ͯ͘͠Ε͍͍ͯͷΑ
Happy Hacking!!