Ukuba usebenzisa stripchar Ukucoca igalelo lomsebenzisi, awuwedwa. Abaphuhlisi abaninzi baxhomekeke kolu hlobo ucoceko lokufaka ukuvimba imizamo yokujova. Ekuqaleni, kubonakala ngathi kusengqiqweni, susa oonobumba abayingozi, kwaye umthwalo uyanyamalala. Nangona kunjalo, le ndlela inika umbono wokhuseleko olungeyonyani. Enyanisweni, abahlaseli banokudlula kwiifilitha ezilula ezifana stripchar usebenzisa imithwalo yokuhlawula efihliweyo, iikhowudi, okanye ukutshintsha umxholo ngobuchule. Yiyo loo nto abaphuhlisi abakrelekrele bengapheleli apho. Endaweni yoko, basebenzisa imibuzo parameterized, ezithintela ukuhlaselwa ngenaliti engcanjini.
Kule posi, uza kufunda ukuba kutheni stripchar iyasilela kwiimeko zokwenyani, indlela abahlaseli abasebenzisa kakubi ngayo ezi zihluzo, kunye nezinye iindlela ezikhuselekileyo ezisebenzayo ngokwenene. Siza kuhamba ngemizekelo yekhowudi, sibonise iindlela eziqhelekileyo zokudlula, kwaye sichaze indlela ucoceko lokufaka kufuneka isoloko idityaniswe nokhuseleko lwesakhiwo olufana imibuzo parameterized, okanye uza kuhlala usengozini.
Intoni stripchar Ngokwenene Yenza (kwaye Ayiyenzi)
Abaphuhlisi abaninzi basebenzisa stripchar okanye imisebenzi efanayo yokususa oonobumba abangakhuselekanga kwingeniso yomsebenzisi. Ngokwesiqhelo, isusa iimpawu zokubhala, iimpawu ezikhethekileyo, okanye nantoni na engeyiyo inombolo yamagama. Ekuqaleni, oko kuvakala ngathi ucoceko lokufaka, kodwa ayilokhuseleko lokwenyani.
Masiyihlalutye. Umsebenzi onje:
isusa abalinganiswa abafana ', ", okanye ;Ngoko ke, ukuba ungena:
Iba:
Nokuba igalelo lomsebenzisi libonakala licocekile, abahlaseli basenokufaka imithwalo ye-SQL besebenzisa i-logic yodwa, ingakumbi xa usetyenziso lwakha imibuzo ngokusebenzisa i-string concatenation. Ukuthintela ngokwenene ukujova kwe-SQL, kufuneka usebenzise imibuzo esekwe kwiparameter kunye nokuphathwa kokufaka okuqaphela umxholo. Izihluzi zoonobumba ezifana stripchar() akwanelanga nje.
Ewe, ukufaka okuhlutyiweyo kunokubonakala kukhuselekile xa ujonga nje. Nangona kunjalo, le ndlela ayiwuthinteli umgaqo-nkqubo onobungozi, itshintsha kuphela indlela ebhalwe ngayo. Enyanisweni, abahlaseli badla ngokulisebenzisa eli thuba ngokufaka ikhowudi kwimithwalo, ukufaka isithuba esimhlophe, okanye ukusebenzisa oonobumba abasusiweyo ngobuchule ukuze badlule ngokupheleleyo kwisihluzo sakho.
Ngaphandle koko, stripchar Ayinawo umxholo obalulekileyo. Ayazi ukuba i-input iya kwi-database, kwi-shell, okanye kwi-browser. Oko kuthetha ukuba ayinakusebenzisa i-escape okanye i-encoding efanelekileyo. Ukucoca i-input ngaphandle kokwazi indawo ekuyiwa kuyo kufana nokubaleka kwi-HTML ngelixa isoyikiso sokwenyani sinjalo. SQLi.
Ekugqibeleni, stripchar Ayitoliki okanye ayikhusele nantoni na, ihlela nje imitya. Kwaye ukuhlela akuyonto yokhuseleko. Ukuba ufuna ukhuseleko lokwenyani, sebenzisa imibuzo ecwangcisiweyo, eqinisekisiweyo, nenemilinganiselo. Yima ngokupheleleyo.
Ukuze umahluko ucace ngakumbi, nantsi indlela i-stripchar ethelekisa ngayo ecaleni kunye nemibuzo esekwe kwiparameter:
Imibuzo yeStripchar vs Parameterized: Yeyiphi Ekhusela Ikhowudi Yakho?
| uphawu | stripchar() | Imibuzo eneeParameter |
|---|---|---|
| Nqanaba lo Khuselo | Ukucocwa kwentambo okusisiseko. Kulula ukuyidlula ngokusebenzisa amaqhinga okubhala ikhowudi okanye i-logic. | Ukhuseleko oluqinileyo kuzo zonke iintlobo zokufakwa kwe-SQL. |
| Ulwazi ngomxholo | Ayiboni nto ithethwayo (SQL, HTML, shell, njl.njl.). Isebenzisa umthetho ofanayo kuyo yonke indawo. | Ukuqonda ngokupheleleyo imeko. Isebenzisa indlela efanelekileyo yokubaleka kwindawo nganye. |
| Umzamo woMphuhlisi | Iyakhawuleza ukuyisebenzisa kodwa ayithembekanga ukuyisebenzisa ixesha elide. | Ifuna ukuhlanganiswa okuchanekileyo, kodwa okuqinileyo nokuqinisekisa ikamva. |
| Ukumelana nokudlula | Abahlaseli abaphantsi bayakwazi ukuziqhelanisa ngokulula besebenzisa i-whitespace, i-encoding, okanye i-logic. | Iphezulu — yahlula ikhowudi kwidatha kwaye ivimba ukujova ngokuthembekileyo. |
| Ukhuseleko oluqinisekileyo | Ingqondo yokhuseleko engeyonyani — isenokuyifihla ingxaki ngaphandle kokuyilungisa. | Ishishini elithembekileyo standard ukuze kwenziwe umbuzo okhuselekileyo. |
Indlela Abahlaseli Abadlula Ngayo Ukucoca
Le yindlela ebonakala ngayo indlela eqhelekileyo yokuhamba ebuthathaka xa abaphuhlisi bexhomekeke kwi stripchar ukucoca umzimba ngendlela yokufaka:
Abahlaseli akufuneki baphule izihluzi zakho, kufuneka nje hambahamba naboXa abaphuhlisi bexhomekeke kwi stripchar ukuze kuhlanjululwe izinto ezifakwayo, bahlala becinga ukuba ukususa oonobumba abanjengeengcaphuno okanye ii-semicolons kuya kuthintela imizamo yokufakwa kwezitofu. Nangona kunjalo, abahlaseli bayaqhelana ngokukhawuleza. Bayenza ngokukhawuleza. imithwalo yokuhlawula efihliweyo ezidlula kwiifilitha ezisekelwe kwi-regex, ingakumbi xa ezo zifilitha zingenawo umxholo.
Umzekelo, masithi uzama ukucoca igalelo ngolu hlobo:
Nokuba umsebenzisi akanako ukuthumela iklasikhi ' OR 1=1 --, banokusebenzisa amaqhinga e-Unicode, ukudibanisa imigca, okanye i-syntax ephukileyo esasebenza. Imithwalo efana nale idla ngokusebenza:
okanye:
Ukuba umsebenzi wakho ususa oonobumba abangengawo amagama, ungenza yakha kwakhona ngempazamo umyalelo we-SQL osebenzayoOkubi nangakumbi kukuba, abahlaseli banokufaka amaxabiso ngeendlela ezidlula isihluzo sakho kodwa zichazwe yinkqubo ekujoliswe kuyo.
Ngaphandle kokufakwa kwe-SQL, stripchar iyasilela nakwezinye iimeko, njengemiyalelo yeshell, iindlela zefayile, okanye kwanokuphunyezwa kweJavaScript. Ekubeni ingenalo ulwazi lokuba igalelo liza kusetyenziswa phi, ayinakusebenzisa i-escape okanye i-validation efanelekileyo.
Nje ngeziphumo, ucoceko lokufaka kunye stripchar Kulula ukuyiphepha. Ukhuseleko lokwenyani luvela ulawulo oluqonda imeko, ngakumbi imibuzo parameterized ezithintela ngokupheleleyo ukufakwa kwengqiqo.
Kutheni Ufanele Usebenzise Imibuzo EneParameterized Endaweni Yakho?
Ukuba ufuna ukuyeka ukuhlaselwa ngenaliti ngokwenene, kufuneka yeka ukwakha imibuzo ngeentambo. Kulapho imibuzo parameterized ngena. Ngokungafaniyo stripchar, abazihluzi, bona ikhowudi eyahlukileyo kwidatha kwinqanaba leenjini.
Masiphinde sijonge umbuzo ophukileyo:
Oku kuyingozi kuba igalelo lifakwa ngqo kwi-SQL. Nokuba ususa abalinganiswa, usakha umtya ongasetyenziswa gwenxa. Endaweni yoko, sebenzisa umbuzo oneeparameter ezifana nale:
Apha, umqhubi wedathabheyisi uyazi ukuba userInput yidatha, ikhowudi engasebenziyoIyayibaleka ngokuzenzekelayo kwaye ivale ukujova, nokuba igalelo liqulethe iikowuteshini, ii-semicolons, okanye iipayloads ezifakwe kwi-hex.
KwiPython:
Kwi-PHP ene-PDO:
Kuzo zonke ezi mizekelo, imibuzo parameterized thintela ukujova ngaphandle kokufuna ukuqikelela ukuba zeziphi iimpawu ezinokuba yingozi. Akufuneki stripchar, udinga ukwakhiwa kwemibuzo ecwangcisiweyo, eqonda umxholo.
Ukongeza, le ndlela ivimba imithwalo efihliweyo, amaqhinga e-Unicode, kunye nee-encoding bypasses, iipateni ezifanayo zokubaleka ezifumaneka kwi Ubuthathaka be-XSSIzixhobo ezifana neXygeni zibamba ezi zisongelo kwangethuba SAST uhlalutyo.
Ngamafutshane, iindlela zokuzikhusela zokwenyani azixhomekekanga kwiifilitha. Zixhomekeke kwiiprotokholi, ii-API ezithembekileyo, kunye nomxholo opheleleyo. Ukuba usebenzisa iiframeworks okanye i-dynamic service injection, qaphela indlela ii-inputs ezisasazeka ngayo kwi-codebase yakho. Inaliti yokuxhomekeka ekhuselekileyo iqinisekisa ukuba nokuhamba okuntsonkothileyo akuyi kuvula iindawo ezintsha zohlaselo.
Musa ukuthembela kwi stripcharSebenzisa iXygeni ukuQinisekisa uKhuselo lokwenyani
Nokuba usebenzisa imibuzo parameterized, akukho siqinisekiso sokuba yonke ikhowudi yakho ilandela okufanayo standardIngqiqo yelixa elidlulileyo, izikripthi zomntu wesithathu, okanye imigca engajongwanga kwi-PR isenokubangela iingozi zokujova. Yilapho kanye iXygeni inceda khona.
I-Xygeni iskena ikhowudi yakho yomthombo, pull requestskunye ne-CI pipelineukubamba:
- Imitya yemibuzo eyakha i-SQL ngokudibanisa
- Izihluzi ezibuthathaka okanye ezikhuliswe ekhaya ezifana stripchar
- Ingqiqo ethandabuzekayo ehambelana nemithwalo yokuhlawula eyaziwayo engacacanga
Akunyanzelekanga ukuba udibanise yonke imigca. I-Xygeni ibonisa iipatheni ezingakhuselekanga kwangethuba, iyasebenza Ukulungisa Okuzenzakalelayo apho kunokwenzeka khona, kwaye inokuthintela ukudibana okunobungozi kunye nezinto ezinokwenziwa ngokwezifiso Guardrails.
Kufuphi, I-Xygeni iqinisekisa ukuba imibuzo esekwe kwi-parameter ayisiyondlela ilungileyo yokwenza izinto, kodwa inyanzeliswa kwinqanaba elithile. Akusekho kuqagela. Akukho zihluzo ziphosiweyo. Ukhuseleko lokwenyani kuphela.f
Ngaba ufuna ukubona indlela iXygeni efumana ngayo imibuzo engakhuselekanga kwikhowudi yakho?
Izinto ezibalulekileyo ekufuneka uzikhumbule: Yintoni omele uyikhumbule stripchar kunye neengozi zokujova
- stripchar ayingomsebenzi wokhuseleko — isusa abalinganiswa, hayi umngcipheko.
- Ukucoca ngokucoca akwanelanga xa wakha imibuzo nge-string concatenation.
- Imibuzo eneeparameters zezona zikhuselo zichanekileyo, kwaye zonke iilwimi zanamhlanje okanye ulwakhiwo ziyabaxhasa.
- Imithwalo efihliweyo ingadlula kwiifilitha, ingakumbi ukuba kukho amaqhinga okubhala ikhowudi.
- Uhlalutyo oluzinzileyo (SAST) izixhobo zibamba oko abantu bangakuphosi, kuquka iipateni ezingakhuselekanga ezifihliweyo kwikhowudi yakudala.
- I-Xygeni iyazisebenzela ngokwayo izinto ezichongiweyo, ezibekwa phambili, kwanezo zilungiswayo ukuze iqela lakho likwazi ukugxila kwiimpawu zokubhala, kungekhona ukuleqa ubuthathaka.
Isiphelo: Musa Ukuzithemba Izihluzi. Zikhuseleke ngoYilo.
Ukuthembela kwimisebenzi efana stripchar Isenokuvakala ngathi yindlela yokulungisa izinto ngokukhawuleza, kodwa idala uluvo lokhuseleko olungeyonyani. Abahlaseli batshintsha ngokukhawuleza kunokuba ii-string filters zisenza. Eyona ndlela ithembekileyo yokuyeka ukuhlaselwa ngenaliti kukubhala ikhowudi ekhuselekileyo ngoyilo, kunye nokunyanzelisa olo yilo kuyo yonke indawo.
Izixhobo ezifana neXygeni zikunceda ukuba wenze oko ngokuzenzekelayo. Ukusuka pull request ukuba pipeline, babamba oko izihluzi zakho zingakwenziyo, baze bakulungise ngaphambi kokuba kufikelele kwimveliso.
