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En lokhu okuthunyelwe okuhle kakhulu okuphume namuhla ku Landela-Ulwazi, kubikwa ubungozi bokugcina nobungozi obukhulu bama-PDF, okuqinisekisa lokho esikukhulisile okuthunyelwe kwethu izolo. Ngithuthukisa isimilo sendaba: kungcono sebenzisa ifomethi yamahhala ye-DJVU; iphephe ngokwengeziwe futhi yakha amafayela amancane, anekhwalithi engcono… ayisekelwe nje yi "giant" efana ne-Adobe. |
Kulezi zinsuku kuhamba umhlaba wonke umsebenzi owenziwe nguDidier Stevens wokuthola ama-binaries abhalwe kumbhalo we-PDF. Le ndlela, uma isetshenziswa I-Adobe Acrobat Reader, ukhombisa umyalezo ongaguqulwa kancane, njengoba esho ngokwakhe. Ku- I-FoxItkunalokho, awukho umyalezo okhonjiswayo nemiyalo yenziwa ngaphandle kwezixwayiso.
Le ndlela ilula, iqonde ngqo, ngakho-ke iyingozi kakhulu, uma sibheka ukuthi ifomethi ye-PDF ibiyintandokazi yabaxhaphazi nyakenye, ifinyelela emazingeni aphezulu kakhulu okuxhashazwa.
Ngokubona lokhu, ngikhumbule ukuthi kuzindatshana eziningi ezikwi-Intanethi, uma bekhuluma ngokuthi bangakusebenzisa kanjani ukukhubazeka ku-PDF basho izinto ezifana nokuthi "Thola inguqulo ye-Acrobat abayisebenzisayo, nge-FOCA, isibonelo" bese wakha ukuxhaphaza. I-FOCA empofu yanamathela kulawo maqanda ...
Okufana nalokho kwakuyidemo esiyilungiselele uSuku Lwezokuphepha, lapho saxhaphaza khona ukuba sengozini ku-Acrobat Reader (kufaka nohlobo 9) ukuthola iShell ekude kukhompyutha esengozini. Ukuba sengozini okuxhashazwayo kuchazwa njenge- I-CVE-2009-0927 futhi ukusebenza kwayo kuvumela ukwenza noma imuphi umyalo. Uma isoftware isengozini, uzothola umyalezo ofana nalowo obonwe esithombeni esilandelayo:
Futhi ukuxhaphaza esikusebenzisayo kuqondisa kabusha i-Shell ku-IP kanye nechweba lapho sibeke khona i-netcat ukuthi ilalele.
Vele, emshinini osetshenziswayo, inqubo ye-Acrobat Reader iyasebenza, ilalela imiyalo yeShell.
Ngokubona ubungozi bokuxhashazwa kwe-PDF, nginqume ukuyilayisha kuVirusTotal, ukubona ukuthi izinjini zama-antivirus ziziphatha kanjani ngalokhu kuxhashazwa kumadokhumenti e-pdf. Kubaluleke kakhulu ukucabanga ngokuziphatha kwayo uma sikhuluma ngenjini esetshenziswe kwimenenja ye-imeyili noma endaweni yokugcina amadokhumende, ngoba ikulezo zindawo lapho kuhamba khona eminye imibhalo ye-pdf. Umphumela, ngalokhu kuxhashazwa okuthile, wawungemubi, kepha kwakumangaza ukuthi kwakusenenqwaba yezinjini ezingazange zikuthole, kepha amaphesenti awazange afinyelele kuma-50% futhi, amanye awo, ahlaba umxhwele njengoKaspersky, McAffe noma iFortinet.
Njengokulangazelela, kwafika kimi ukuthi ngisebenzise iphakethe lefayela ukukhiqiza okuphumelelayo, okufana nesithandwa sethu I-Redbinder of Thor, kepha ngokusebenza okuncane okubizwa Jiji futhi kwakukhona kubonakala eCyberhades, ukubona ukuthi izinjini ze-antimalware zenzeni lapho sifaka ukuxhashazwa kwe-pdf ngaphakathi kwephakeji ngesandiso se-exe.
Lokhu kuzosebenza okusha, lapho kusebenza, kwethula idokhumenti ngokuxhashazwa kwe-pdf. Ezinye izindlela ezafika emqondweni wami yilezi: A) bakuqaqa kanye nabantu bakudala bakuthole kanye no-B) Baya ngqo ukuthola okungaphakathi bese besayina opakile.
Bangu-2 kuphela kwabangu-42 abayitholile, u-1 njengomsolwa, futhi yi-VirusBuster kuphela ebazi ifomethi, futhi bathatha inkathazo, ukukhipha okuqukethwe ukuskena.
Ngemuva kokubona lokhu, kubonakala kulungile impela ukuthi iMicrosoft ne-Adobe bacabanga ukuvuselela isoftware ngeWindows Update nokuthi iMicrosoft ivule ipulatifomu yayo Yezinsizakalo Zokuvuselela iWindows ukuhlanganisa ezinye izixazululo ezinjenge-Windows Update agent Secunia CSI, esebenza ne-System Center Configuration Manager ne-WSUS.
Ngilalele kangcono sebenzisa ifomethi yamahhala ye-DJVU- ivikeleke ngokwengeziwe futhi yakha amafayela amancane, wekhwalithi engcono.
Umthombo: Landela-Ulwazi
ukucaciselwa: i-pdf nayo iyifomethi yamahhala.
futhi kungadingeka ukubona ukuthi iphutha likabani, uma ifomethi (PDF) noma izinhlelo (i-Acrobat Reader, iFoxit, njll.) ngoba ifomethi ingaba yinhle kakhulu, kepha uhlelo oluyisebenzisayo lubi kakhulu, nokuthi Akusho ukuthi azikho izinhlelo ezinhle lokhu okungenzeki kuzo (zonke zisebenzisa i-Acrobat noma iFoxit, kepha eLinux sinezinketho eziningi, ngabe lokhu kuzoba sengozini?)
Angikaze ngizame i-djvu, manje ngibheka kancane ukubona ukuthi iyini, futhi inento encane engingayithandi kulesi sikhathi esincane engiyibukayo, awukwazi ukukopisha umbhalo, ngoba konke isithombe. Angiyithandi kanjalo, ngivame ukukopisha izinto kusuka kuma-pdf engiwafundile.
Angazi ukuthi ngizoyisebenzisa yini kakhulu, ngicabanga ukuthi ngincamela ukuthuthukisa ifomethi ye-pdf, eyi-vector.
imikhonzo
Marcos othandekayo, imibono yakho iyabonakala. I-PDF ibiyifomethi yokuphathelene, kepha kusukela ngoJulayi 1, 2008 yifomethi evulekile.
Noma kunjalo, kuyiqiniso okushoyo ukuthi kwesinye isikhathi amakhasimende / abafundi banokuningi abakwenza ngakho. Isibonelo esicacile yicala elibikwa kulokhu okuthunyelwe.
Futhi yebo, angithandi ukungakwazi ukukopisha umbhalo we .djvu futhi. 🙁 Noma kunjalo, ekhasini lesiNgisi le-Wikipedia ithi: «Ngakho-ke, esikhundleni sokucindezela incwadi« e »kufonti enikeziwe kaninginingi, icindezela incwadi« e »kanye (njengesithombe esicindezelwe) bese iqopha yonke indawo ekhasini kuyenzeka.
Ngokuzikhethela, lobu bobunjwa bungahle benziwe imephu kumakhodi we-ASCII (kungaba ngesandla noma ngokungenzeka ngohlelo lokuqaphela umbhalo), futhi agcinwe kufayela le-DjVu. Uma lokhu kwenziwa kwemephu, kungenzeka ukhethe futhi ukopishe umbhalo. Okusho ukuthi ungakhetha umbhalo ku-djvus.