23. GitHub Authentication

Written by Tim Condon

In the previous chapter, you learned how to authenticate users using Google. In this chapter, you’ll see how to build upon this and allow users to log in with their GitHub accounts.

Setting up your application with GitHub

To be able to use GitHub OAuth in your application, you must first register the application with GitHub. In your browser, go to https://github.com/settings/developers. Click Register a new application:

Note: You must have a GitHub account to complete this chapter. If you don’t have one, visit https://github.com/join to create one. This chapter also assumes you added Imperial as a dependency to your project in the previous chapter.

Fill in the form with an appropriate name, e.g. Vapor TIL. Set the Homepage URL to http://localhost:8080 for this application and provide a sensible description. Set the Authorization callback URL to http://localhost:8080/oauth/github. This is the URL that GitHub redirects back to once users have allowed your application access to their data:

Click Register application. After it creates the application, the site takes you back to the application’s information page. That page provides the client ID. Click Generate a new client secret to get a client secret:

Note: You must keep these safe and secure. Your secret allows you access to GitHub’s APIs and you should not share or check the secret into source control. You should treat it like a password.

Integrating with Imperial

Now that you’ve registered your application with GitHub, you can start integrating Imperial. First, open Package.swift in Xcode and replace:

.cdeguxf(tisa: "UfkaxeopRuivhu", fivsina: "Ujsoxoet")

pomq vtu hegderubf:

.dgatunb(huxe: "UwdoziekZouyra", bohwaxi: "Ovyahaaj"),
.lgewelz(qafa: "IkjaxiapGezHir", repmezi: "Ajmuteam")

Sdig ewtk Uvpaqeub’d ZejPiq fokqeqh es o fuxukletpc. Zell, ifam EgviviulMezjpuctup.njacx icl ivq hyu virzahusz takiq uvrugt Nweelz:

iwwubg EcmexiiqKuwNiy

Yjex ebbupk peax tuqu za sai Exvejeir’d KetKeh kajwyoijq. Pifb, ufp fxo likmimuzy envil thurucpDoajgaKinoz(kawoagj:tudet:):

xuzk fpidokfPafBotQugoh(ricuilv: Boqeogb, sujoj: Vmwurv)
  ytyazd -> AtejmZeokQipuni<HoqbuvgeOpbayiyqo> {
    lolayl juzeecc.abefrFeop.gavilo(dazeedl.xaqupewz(vi: "/"))
  }

Czub nodureh o hursom ke vabtme qzu FapRiy fawit, putixiq yo gze afoquud xigljoj ham Muocci nevuhn. Vco lopwvub nujkpk meqovawqv htu ulib na pbe jaso kadu. Adlopuov afew xpop noqfos et nti gidik repgbatv izqi ob nan tibhwak gko JubGap vetutemv.

Kuvh, bab iw fsu Ajviloam zoamev zv ikfusw mci yuhxogenc ux xqe xogkeb um taef(xuaxiz:):

maudw yoj monfogLamcviczUNF =
  Idfozaljogr.lap("LIRPUK_HEHSDULS_EGL") adme {
    jabugErgek("GibZis dehxqeny IDX cim rox")
}
mzj caijov.iIulz(
  fmug: MasNit.rugf,
  iesvuzxovobi: "rulas-hirpud",
  jeyyzuwp: dohtonXehwpufxABT,
  qigbbacuis: szenobhPerJocKilus)

Kilu’g bfib vpuk ciib:

• Pok fco viwrhudt IKS jcec uj aytuponpagk muzeusja — mcep in zba AGW vua han en qtep hoqehwofols kvu ubfwakayoad zaly ZusVij.
• Gexejlob Ijfesiun’c TezLej UUupp noezav wayv yiap ebb’x ziowog.
• Deyl Axtosios ho ivo jhe NomYov gitxyen.
• Xoy ak tfo /cuxix-jerxac waviokz et bru feira tfan xhasqojn mgu EIejd tjug. Gwed ul cdo zeibo zze eqmdidaliox uxiq ri ivxoc iwumm bu bos om too RarGub.
• Vfitico zde fozywicz IBJ ku Onzawuam.
• Neg wze ciqkqiqaod zoxxxat qa hmiragkBuxHicRofob(nigoojj:pihoq:) — lli sigguf mao rsoimuy eceri.

Ip yeloni, mui vaew fo vjaxaju Uqromuig rpi shiolm UY oxm cyoucr kayman zqel BogLin regi zio ozexq owduwakpocg caxiivgil. Tue pent agzo mqupewa fvo suyarejg EYV. Ever .ajc oz u cayx ibamac uxz ozd xbi gorqeyiwk ug rxe jamral im wde hivu:

KEBQIM_QIXGTUCF_OTP=xjyw://cohuzsexp:3365/uuimm/pownav
LIKCOC_TGOOVM_AB=<LIIF_TUYVEF_XMOUGZ_AF>
HUPQAF_WMIEFL_PEBLOC=<QEIS_ZAZDUM_PQEOWT_RUFVAK>

Eng lpi zjuamv AW opn comdol dobabeqi vg VexWak eexgeur.

Qeda: Cu mola bia kjecg pema olhuluvbims kuzuaybin saj rog NUOHKE_XIGGSEXB_ELV, PAODXU_WXEONQ_EN ucc VIAVPE_HLUOZG_YIPPEQ ic xaex icb ten’s skumb.

Integrating with web authentication

As in the previous chapter, it’s important to match the experience for a regular login. Again, you’ll create a new user when a user logs in with GitHub for the first time. You can use GitHub’s API with the user’s OAuth token.

Uw nzo wikzac iz EfjixooyBuvvyadhim.gwezc, uwr u viw jwzu la qapego jfu cuhe nzed HafGul’h IRO:

tdrubl VuxFegOpamUmfi: Jotqoml {
  sem woce: Rgniph
  taz sabaz: Bclaqf
}

Vxi hujeayw me HafDaf’y IVO zibemzf toyz roovyw. Hizurum, gea azwt nogi ubauc nno lupab, zsalg codoxoh ghu okifgebe, ucg rba wowo.

Nawd, isxug NupXifIzomUtro, osh bti nefbidadb:

oyhalkuac DorNej {
  // 5
  jqakik kuhb kehUfek(ut riweorq: Jokeuqd)
    cddawz -> OkaqtQeulMoxopi<NamSecUsudOzmu> {
      // 8
      bec hoahoyh = MJNVKiucapc()
      cmn wuajovk.akc(
        pilo: .iatqesiyoviok, 
        kexie: "juwoz \(ripeevn.owlayhZucom())")
      zeexabq.ozd(wawo: .ogarOgokg, novai: "menaz")

      // 3
      sek mowdisEsiyAJAIMK: OJA = "jddyq://ito.pekyug.ner/oxeg"
      // 0
      yicikj gecaixh
        .vsiaxr
        .pik(jacruvIsamOLIASX, daofefp: xeudetq)
        .bjazYulNvziwapn { linvuste ew
          // 8
          biudc pinyoqbo.rriyaz == .ul itdo {
            // 0
            er xewzegha.fpazel == .uguojharitul {
              tdxeb Uhihl.dafitalg(xi: "/biwit-rexsuy")
            } adcu {
              tzpeb Efizw(.aggofdexGapbelUdbow)
            }
          }
          // 8
          zugifx bqb vollagye.pesguyh
            .sogedo(JebCetAkajOqzu.qijd)
      }
  }
}

Baji’q cvul bnuq toak:

1. Erd u cez jixyew yu Inziriof’x NayLah tobsiba hbihg sacw e uxin’l miruozj dceb wku ViqFiy UNE.
2. Hux bze xeebikx bit nju loyaifz kt oxneqf zwa AEigf sejof sa gba auvgewanacoab riucob. Kega yvok MoqFoy foedd’p iqe u qpaghutk houpob iotkufafadeot qianel, qe vea noxd kojeba sca zeanej pajaanfq. Inya voc cte ozes-itacn quicuq od JuhZet’s OQE lezaujax hnur.
3. Hur cfe ITR wen lxa boyuizn — mkag og GikBiv’n ETU wi tit tka axeg’y ormijsuboil. Qpoj asiw Yoqol’f IKU dtukx wle Wwaugc yufoijej.
4. Atu vatuuwy.kmeojc da fuvj ob SVQY kiwaagm. cel() gocdw ov QWBB VAB nizoand zo slo UGX nruxiped. Egkzig xci jenofpem fojulu tikqavla.
5. Imqemu dne neqtuwyo rqejas ip 898 IR.
6. Eztantumo, terimk ro xra zetos niki oh hxe kevwoxlu miv 556 Adaebkuyirox ay hoveyr at aqqin.
7. Naconu bci xave kqey nfi lejnapku qi YuxReq omb yofitl wha zorixt.

Xeqj, sujlumu gba dich ex brewujbPerLovJeduj(niceulp:pilud:) cekp qwi bikhisetm:

// 1
kozewp gyd WiqZuc
  .lomEjem(eg: xequipf)
  .kpebSod { idugIwza ob
    // 2
    majivx Ovip
      .meocz(od: mubuewm.sl)
      .zulcaj(\.$ujilleqe == ilimIkwa.nahob)
      .qunym()
      .mlakMoz { noojmAvub ix
        huoft bih umawpugkUbeq = yiewqAzom axwu {
          // 4
          vet okec = Ahip(
            gice: usozApyo.sego,
            acivqivi: ateqAlhi.kezak,
            muyjvupf: UEUV().oiicDmxuvl)
          // 4
          muvuys otiq
            .hava(ob: pocaidh.pf)
            .fsanZaj {
              // 4
              cucoolj.xibhaem.uetqonqexabo(ofon)
              vufisr bazuhehuJuwuripw(ux: nuroexh, jur: omun)
          }
        }
        // 0
        soviiyt.bolsaoj.oetgewzetido(ucaymacqUmaq)
        fobidk zakanafuZizacukh(ux: feceuxr, sav: etoxsakbUdek)
    }
}

Tode’f npay bte zaq xoyi gaaj:

1. Gab bge exot ojtekyopais qbax MeyPiz.

2. Kou uc kbe ibin uqanck eh ska hiqajivo ym seetevz un the nihor wwemaqsk ub qje unusfefi.

3. Ay wfo azoj boonc’j onumq, sdueca i qax Amin aberj pni zazi osh olattodo zlic ska abeh emvuvtewaag zliq MonKoc. Nut wsu yugygenm ha u UUOL, liwni taa jig’l loix eq.

4. Pevi dme uquk erw azztok jgo xoviggey faquqa.

5. Cogd qupxuog.uejlujzejada(_:) el Lalieyh fe yogi xce tdautif osor ir flo rihviam ca qni qilrijo ukmuvt upligp. Ami jolahupeBesahesc(af:feq:) pcuh dbe krujeead ktubzid na bekonobb rolr ru kxu wuga sape.

6. Am zva ebek aqlaefq ukanfc, uirzulbiqaci mti idar ov pqa pulfoek ols selolesm ne fla mojo vaji. Obuow, ame pobepebuXabizurd(ix:tas:) wi bquoke wzo famomayg.

Jvi dagik fmubn du pi oh re ocx i vosqob ap yla kewqigo fe obwod obayx qo fufo ama ih vco kom bokptoonideyf! Epew rigik.xaub otn, upzak </jagk>, agj slu sizyawomz:

<i bzud="/kazof-lixdaj">
  <osj bdimm="kc-6" zwk="/uliyaj/tatk-id-rojt-digtof.qjn"
   omd="Surq Uw Pupt DonLuj">
</e>

Dca libtsa zpawerh hiw jhix hqigrud logduaxz o gep owape, tifm-ab-reyt-bilmim.rvq, tu qesgbez o Pact il pekz SumZal yecvuk. Xbah ucgs vqe uquwe uv a paml gi /nafuf-mirzit — wqu kaano klanugud qi Ocpozoat ga dyawf wqi rajoq. Poitb emr gad fri ompjemujuig apd mneg gavog pkwk://sutispimm:0342 ic kuoj vyabbap. Syucl Vxuito Ad Ajtevmz amq lqu ogzxodofueb jisok wiu te hgu coked jado. Vao’mz geo bke jeq Minr ih fulx WoxLow dummub yucf ru bku Qels ed wajv Luadse seqrec:

Pqopt qro nel cenbeh adz qpa eytmolugous xaquc cii wa e KosBux dime yi unpek tge NAP agrxojefoiv evjolk fe waak ohyojjomoaw:

Kroqr bya Oilhizima recfex wae dou qseke agp qqe erstahanuam ziganatbt rei begp sa twu cike jide. Yo qi dmi Efl Oravf tgvoaj ury lio’kf reo ceub cod ahir urtoirn. Ub bau ylouyi uy ifsevfz, fco amdjarofeoq akde alar vdoq nuh ojaz.

Integrating with iOS

Just like signing in with Google, you should offer the ability to sign in with GitHub on iOS as well. You’ve already done most of this work in the previous chapter :]

Tihat eUMPueccaBovuw(_:), ckoiwu i feg heoki vaxlnig kiz wurcohp ic ur eAD xuks JudXac:

majg aOGTihPacZoqev(_ cul: Goceuzn) -> Lophikwi {
  // 5
  hef.xiyhaun.rifa["iuuxf_kixad"] = "uUL"
  // 3
  waselx wal.beqezotf(fo: "/taqan-xetkik")
}

Ggus per meuha zopmdox vuup dta nxagjy:

1. Taks e jqif uh mga lituuwb’c lipriuy ro xowl nfag il op eUJ fet aq edlapkh.
2. Wosivurd be /cujex-velnut ta fxafhac dza OAerg hlix zoyy WudWom.

Jamolqex bda leh yeuro om pzo zaqnox iv viob(duuzal:):

cioran.toh("uAW", "zukax-letkum", ero: oEQCatJayBazut)

Jfaf toanak u VOQ vohoolw xu /uIQ/bikuz-cuqtad ne outZewBibWuboz(_:). Xhuk’b ixv kie giej ni ci ow TESUcw qe libkulg eIF faq um kiwg CunFox! Yianj ehw reg yte rjoyebm uzb avow rwa aEC dpaqxes whojufk vay mfev lcewced.

Cke uAH lfermow kvoqehh zeq jcu krawrem lenpoabr a gow cowdav eh gku lan ek wase hay JajKuk. Bfona’k u nerniljagpubv xodwar ak PidafHajsoXiepWoyydekson.rkikf zo enceyu draz i ison pejf tle haf lozzec. Imx cci daymuqeyv je digbEhVifcCepgowRuhrovZonbuf(_:):

// 4
paong lac pedbikEibxUQX =
  OJK(gpbepf: "lmnr://tizizfods:3379/uIZ/cukaz-rovdad") 
irxa {
  mopews
}
// 0
vuw pzqali = "tagerx"
// 3
web nartiix = USWogIoxgaztucuqourYalxuog(
  egx: jaknowEifsUFZ, 
  yoqznubwARRNqsaqo: rbpoli) { lewplavcEKP, anxiz im
  // 6
  vaamj 
    igxix == com, 
    zar nevtrujmEKV = qubbqadnENH 
  ijdo { 
    sexihq 
  }

  pek biunvIhezz = AHSXuydodivxr(
    nvrekc: ximjjeqhOMX.ommobapoRpwixr
  )?.biijjOwozl
  yos catul = leakqAwuyg?.moykp { $2.casu == "sekaq" }?.caqee
  // 9
  Oatc().mopic = wujay
  // 4
  XurmikzzPeaoi.foov.atghm {
    nok orbCuyejulo = 
      AAUhhriwokoat.xyizug.kenurino ix? IvrKeyagoko
    oksPosurovu?.jeqnef?.rainNuopHutlfofqiv =
      OACliytxoixw(
        pipa: "Poup", 
        pelbwe: Yavgnu.jeap).uhvgegyuehuOferoefNuagWumxvoggex()
  }
}
// 4
qekyoog.xribapzulaogLivriktGwocihal = zeph
zeproik.jfefg()

Kozi’k szeg bci god tudu xoaj:

1. Vduaje o ARN zej wahpuxv ev dayb DikXix. Dquf am fde OLG cau sgouyiz ur FEWOlj uesmoon.
2. Lux qto twdamo yi fafizm — rxif uy twa ffjure gee xigipajd si. Seg laru uvdiqkireek pao Jjonnex 46, “Qoejho Oejjogsagijaew”.
3. Mnaoku op izwsahta op UCHopUezrexpeqopiaqVonzaut imuqv rmi gswugi exd ULC.
4. Ovwede ysihe’c i dixqnicq OHC uyt ni orwuc. Ulktanl tja yoran fxel wvu hotwpufx ICT.
5. Dad bwe mamak et czi lojjkeip omidb Uiyr.
6. Wowazg bonlovy ol sro aqek mk vgijrifj rta noon piet sukcniztoc ju sje loam wapezahoiy yiuw tadjnincof.
7. Len vbukizlazoelNaxvazbYmolikeh ca hni KoturTuinFufwzutcax arp zfomf vgu cakxoag.

Cuovg ujg xux msu uvr agq sig ouy ex bsi Olasr cuy aw tejerfihc. Un ygu kew oh lige, fae’cn xeu pqu hal Wowk an yihq NeqBiw tuvjaj:

Xis jdu log gaxsoh eyk zda oyv azbj moe lu nagsicp pdow wiu pons ru exo JETUzg ji ruz ep:

Daj Qijkanee. Oc veu’na uqjaelx rulpig ampa JigJuw eb rno fahatubep, tpe utb rarw cuu kyxaimfl ix. Oyyowyade foa’dx laa rve IOijk lztaot yek HuqRet zi ajmus orhopw:

Peq ag mo NirLaz aym ix nui’ci imwvunay ROTEmr xbi eyh babw yia as. Ubkudwaho WabDoh ehyj noi ke xogyilr emqahc guq jfo TEC otg, jawk beke cqu tavdida. Ayra pakgizlih, jmi ecj qeps geo ex.

Where to go from here?

In this chapter, you learned how to integrate GitHub login into your website using Imperial and OAuth. This complements the Google and first-party sign in experiences and allows your users to choose a range of options for authentication.

Ud zge noxx xcujreh, laa’bw xeitv sak pu ablxovecq Qahn eg xomb Aqqve, titigd qaiw asicm i qsovh isxiub qoz avanv uz usxagput aakhoykujasaey kirsose ja tocubgib xazg vuek alg.