{"id":102842,"date":"2022-01-02T15:36:38","date_gmt":"2022-01-02T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/%d0%b2%d1%8b%d0%bf%d1%83%d1%81%d0%ba-%d1%83%d1%82%d0%b8%d0%bb%d0%b8%d1%82%d1%8b-gnu-cflow-1-7"},"modified":"2022-01-02T15:36:38","modified_gmt":"2022-01-02T13:36:38","slug":"%d0%b2%d1%8b%d0%bf%d1%83%d1%81%d0%ba-%d1%83%d1%82%d0%b8%d0%bb%d0%b8%d1%82%d1%8b-gnu-cflow-1-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/%d0%b2%d1%8b%d0%bf%d1%83%d1%81%d0%ba-%d1%83%d1%82%d0%b8%d0%bb%d0%b8%d1%82%d1%8b-gnu-cflow-1-7","title":{"rendered":"Wydanie narz\u0119dzia GNU cflow 1.7","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Po trzech latach prac zosta\u0142a opublikowana wersja narz\u0119dzia GNU cflow 1.7, przeznaczonego do tworzenia przejrzystych wykres\u00f3w wywo\u0142a\u0144 funkcji w programach napisanych w j\u0119zyku C, kt\u00f3ry mo\u017ce by\u0107 u\u017cywany do uproszczenia zrozumienia logiki dzia\u0142ania aplikacji. Wykresy s\u0105 budowane wy\u0142\u0105cznie na podstawie analizy kodu \u017ar\u00f3d\u0142owego, bez konieczno\u015bci uruchamiania programu. Obs\u0142ugiwane jest generowanie zar\u00f3wno bezpo\u015brednich, jak i odwrotnych wykres\u00f3w przep\u0142ywu wykonania, a tak\u017ce generowanie list odniesie\u0144 krzy\u017cowych dla plik\u00f3w z kodem. <\/p>\n

Wydanie jest godne uwagi dzi\u0119ki wprowadzeniu wsparcia dla formatu wyj\u015bciowego 'dot' ('--format=dot') w celu generowania wynik\u00f3w w j\u0119zyku DOT, kt\u00f3re mo\u017cna wizualizowa\u0107 w pakiecie Graphviz. Dodano mo\u017cliwo\u015b\u0107 wskazania kilku funkcji startowych poprzez duplikowanie opcji '--main', dla ka\u017cdej z tych funkcji zostanie wygenerowany osobny graf. Wprowadzono r\u00f3wnie\u017c opcj\u0119 '--target=FUNCTION', kt\u00f3ra pozwala ograniczy\u0107 wynikowy graf tylko do ga\u0142\u0119zi zawieraj\u0105cej okre\u015blone funkcje (opcj\u0119 '--target' mo\u017cna podawa\u0107 wielokrotnie). W trybie cflow-mode dodano nowe polecenia do nawigacji po grafie: 'c' \u2014 przej\u015bcie do funkcji wywo\u0142uj\u0105cej, 'n' \u2014 przej\u015bcie do nast\u0119pnej funkcji na tym samym poziomie zagnie\u017cd\u017cenia i 'p' \u2014 przej\u015bcie do poprzedniej funkcji o tym samym poziomie zagnie\u017cd\u017cenia. <\/p>\n

W nowej wersji naprawiono r\u00f3wnie\u017c dwie podatno\u015bci, kt\u00f3re zosta\u0142y ujawnione jeszcze w 2019 roku i prowadz\u0105 do uszkodzenia pami\u0119ci podczas przetwarzania w cflow specjalnie sformatowanych kod\u00f3w \u017ar\u00f3d\u0142owych. Pierwsza podatno\u015b\u0107 (CVE-2019-16165) spowodowana jest pr\u00f3b\u0105 dost\u0119pu do pami\u0119ci po jej zwolnieniu (use-after-free) w kodzie parsera (funkcja reference w parser.c). Druga podatno\u015b\u0107 (CVE-2019-16166) dotyczy przepe\u0142nienia bufora w funkcji nexttoken(). Zdaniem deweloper\u00f3w, wskazane problemy nie stanowi\u0105 zagro\u017cenia dla bezpiecze\u0144stwa, poniewa\u017c ograniczaj\u0105 si\u0119 do awaryjnego zako\u0144czenia dzia\u0142ania narz\u0119dzia.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u043e\u0441\u043b\u0435 \u0442\u0440\u0451\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0443\u0442\u0438\u043b\u0438\u0442\u044b GNU cflow 1.7, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u043e\u0433\u043e \u0433\u0440\u0430\u0444\u0430 \u0432\u044b\u0437\u043e\u0432\u043e\u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430\u0445 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f 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wykres\u00f3w wywo\u0142a\u0144 funkcji w programach napisanych w j\u0119zyku C, kt\u00f3ry mo\u017ce by\u0107 u\u017cywany do uproszczenia zrozumienia logiki.","canonical_url":"https:\/\/prohoster.info\/pl\/blog\/news\/%d0%b2%d1%8b%d0%bf%d1%83%d1%81%d0%ba-%d1%83%d1%82%d0%b8%d0%bb%d0%b8%d1%82%d1%8b-gnu-cflow-1-7","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pl_PL","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u044b\u043f\u0443\u0441\u043a \u0443\u0442\u0438\u043b\u0438\u0442\u044b GNU cflow 1.7 | ProHoster","og:description":"\u041f\u043e\u0441\u043b\u0435 \u0442\u0440\u0451\u0445 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