{"id":42225,"date":"2019-03-18T00:00:00","date_gmt":"2019-03-17T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/telegraf-elektronnaya-pochta-bez-interneta"},"modified":"2020-02-18T13:45:03","modified_gmt":"2020-02-18T10:45:03","slug":"telegraf-elektronnaya-pochta-bez-interneta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/telegraf-elektronnaya-pochta-bez-interneta","title":{"rendered":"\u201eTelegraph\u201d \u2014 po\u0219t\u0103 electronic\u0103 f\u0103r\u0103 internet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Bun\u0103 ziua!<\/p>\n

A\u0219 dori s\u0103 \u00eemp\u0103rt\u0103\u0219esc comunit\u0103\u021bii c\u00e2teva g\u00e2nduri interesante despre crearea unui serviciu de e-mail autonom \u0219i descentralizat \u0219i s\u0103 demonstrez \u00een practic\u0103 func\u021bionarea unei implement\u0103ri existente.<\/p>\n

Ini\u021bial, \u00abTelegraph\u00bb a fost dezvoltat ca un mijloc de comunicare amateur \u00eentre membrii comunit\u0103\u021bii noastre mici de studen\u021bi, care, \u00eentr-un fel sau altul, \u0219i-au dedicat activitatea domeniului calculatoarelor \u0219i comunica\u021biilor.<\/p>\n

Nota Bene<\/b>: \u00abTelegraph\u00bb este un mijloc de comunicare pentru amatori; extragerea de beneficii practice la scar\u0103 industrial\u0103 se dovede\u0219te a fi destul de problematic\u0103, totu\u0219i aceast\u0103 problem\u0103 nu poate fi cu adev\u0103rat considerat\u0103 semnificativ\u0103 \u2014 \u00een principal, consider\u0103m c\u0103 scopul nostru principal este de a atrage aten\u021bia asupra dezvolt\u0103rii unui astfel de sistem de comunica\u021bie.<\/p>\n

Tindem s\u0103 credem c\u0103 cre\u0219terea interesului general pentru dezvoltarea diferitelor sisteme de comunica\u021bie este un lucru necesar \u0219i foarte important, deoarece \u00een\u021belegerea principiilor de baz\u0103 ale func\u021bion\u0103rii \u0219i fundamentului acestor sisteme este cheia pentru sporiterea con\u0219tientiz\u0103rii cet\u0103\u021benilor \u00een ceea ce prive\u0219te securitatea informa\u021bional\u0103.<\/p>\n

\"\u201eTelegraph\u201d
\n<\/a><\/noindex>
\nAchtung!<\/b>Pentru a evita eventualele ne\u00een\u021belegeri \u2014 \u00een unele cazuri, imaginile pot fi deruland:
\n\"\u201eTelegraph\u201d
\n
\nSistemul se bazeaz\u0103 pe ini\u021biative voluntare \u0219i pe purul entuziasm \u2014 pur \u0219i simplu ne place ceea ce facem. Pute\u021bi considera asta un hobby \u0219i nu ve\u021bi gre\u0219i \u2014 deoarece \u00eenc\u0103 exist\u0103 pasiona\u021bi de comunicarea prin coresponden\u021b\u0103 pe h\u00e2rtie; \u00abTelegraph\u00bb poate fi \u00een marea majoritate a cazurilor privit ca o realizare digital\u0103 a principiilor func\u021bion\u0103rii po\u0219tei obi\u0219nuite.<\/p>\n

\u00abTelegraph\u00bb este un analog autonom al e-mailului, care permite transmiterea de mesaje text simple f\u0103r\u0103 utilizarea internetului. \u00abTelegraph\u00bb poate fi asociat \u00eentr-o oarecare m\u0103sur\u0103 cu Sneakernet<\/a><\/noindex> \u2014 metoda de schimb de informa\u021bii f\u0103r\u0103 utilizarea re\u021belei.<\/p>\n

Flash drive-urile sunt folosite ca cutii po\u0219tale, iar terminalele \u2014 computerele, func\u021bioneaz\u0103 ca birouri po\u0219tale, reprezent\u00e2nd puncte de acces pentru primirea \u0219i transmiterea coresponden\u021bei electronice.<\/p>\n

S\u0103 analiz\u0103m un exemplu simplu de interac\u021biune cu sistemul. Avem dou\u0103 stick-uri USB \u0219i un terminal. \u00cen script sunt definite variabilele globale necesare pentru interac\u021biunea ulterioar\u0103 cu sistemul \u2013 num\u0103rul terminalului, calea c\u0103tre r\u0103d\u0103cin\u0103 \u0219i alte detalii.<\/p>\n

Dac\u0103 conect\u0103m un dispozitiv de stocare extern la terminal \u0219i rul\u0103m scriptul, acesta va \u00eencerca s\u0103 ob\u021bin\u0103 mesajele de ie\u0219ire din directorul \/mnt\/Telegraph\/Outbox<\/b> \u0219i s\u0103 le transfere \u00een memoria sa, dup\u0103 care va verifica existen\u021ba unor mesaje noi \u00een memorie pentru utilizatorul curent. Dac\u0103 acestea exist\u0103, le va scrie \u00een \/mnt\/Telegraph\/Inbox<\/b>.<\/p>\n

\u00cenregistrarea de noi dispozitive<\/h2>\n

\nDecurge destul de simplu. Scriptul g\u0103se\u0219te noi stick-uri USB conectate la sistem \u0219i \u00eencearc\u0103 s\u0103 le asocieze identificatoarele unice cu cele prezentate \u00een r\u0103d\u0103cin\u0103. Dac\u0103 dispozitivele nu au fost \u00eenregistrate anterior, acestea vor fi formatate conform regulilor stabilite de \u201eTelegraf\u201d.<\/p>\n

Dup\u0103 \u00eenregistrarea noului dispozitiv, structura r\u0103d\u0103cinii ia urm\u0103toarea form\u0103:<\/p>\n

View post on imgur.com<\/a><\/noindex><\/p><\/blockquote>\n

\n\u00cen fi\u0219ierul de configurare config.ini<\/b>, situat \u00een r\u0103d\u0103cina stick-ului USB, se afl\u0103 informa\u021bii sistematice \u2013 identificatorul unic \u0219i cheia secret\u0103.<\/p>\n

View post on imgur.com<\/a><\/noindex><\/p><\/blockquote>\n

<\/p>\n

Da\u021bi-le oamenilor rom!<\/h2>\n

\nNu, serios! Po\u021bi ob\u021bine sursele aici<\/a><\/noindex>, iar noi deja ar trebui s\u0103 trecem de la teorie la practic\u0103.<\/p>\n

Dar trebuie s\u0103 mai spun c\u00e2teva cuvinte despre cum este organizat \u00een mod practic sistemul de schimb de mesaje.<\/p>\n

Pentru \u00eenceput, s\u0103 \u00een\u021belegem din ce este format identificatorul unic de unsprezece cifre. De exemplu, 10455000001<\/b>.<\/p>\n

Prima cifr\u0103, 1<\/b>, corespunde num\u0103rului \u021b\u0103rii. Codul interna\u021bional este \u2013 0<\/b>, Rusia \u00een acest caz este \u2013 1<\/b>.<\/p>\n

Apoi urmeaz\u0103 patru cifre care corespund num\u0103rului regiunii \u00een care se afl\u0103 terminalul. 0455<\/b> \u2013 acesta este Districtul Urban Kolomna.<\/p>\n

Urmeaz\u0103 dou\u0103 cifre, \u2013 00<\/b>, \u2013 care corespund direct num\u0103rului terminalului.<\/p>\n

\u0218i doar apoi \u2013 patru cifre care reprezint\u0103 num\u0103rul ordinal al utilizatorului asociat cu acest terminal. La noi acest num\u0103r este \u2013 0001<\/b>. De asemenea, exist\u0103 \u0219i 0000<\/b> \u2013 acest num\u0103r apar\u021bine direct terminalului. Nu se poate trimite coresponden\u021b\u0103 scris\u0103 pe el, dar terminalul folose\u0219te acest num\u0103r pentru a trimite mesaje administrative utilizatorilor, de exemplu, dac\u0103 un mesaj nu a fost livrat din diverse motive.<\/p>\n

View post on imgur.com<\/a><\/noindex><\/p><\/blockquote>\n

\n\u00cen r\u0103d\u0103cina \u201ec\u0103su\u021bei po\u0219tale\u201d se afl\u0103 dou\u0103 directoare necesare pentru a primi \u0219i trimite mesaje text. Atunci c\u00e2nd un dispozitiv se conecteaz\u0103 la terminal, din directorul \u201eOutbox\u201d sunt expediate mesajele outgoing, iar \u00een directorul \u201eInbox\u201d, ceea ce este logic, se \u00eencarc\u0103 mesajele incoming.<\/p>\n

Fiecare fi\u0219ier este denumit \u00een func\u021bie de num\u0103rul destinatarului sau expeditorului, \u00een func\u021bie de director.<\/p>\n

Dac\u0103 \u00eencerc\u0103m s\u0103 trimitem un mesaj c\u0103tre un destinatar inexistent, terminalul ne va trimite un mesaj de eroare.<\/p>\n

View post on imgur.com<\/a><\/noindex><\/p><\/blockquote>\n

\nCu toate acestea, dac\u0103 decidim s\u0103 trimitem o scrisoare c\u0103tre un destinatar aflat pe un alt terminal (indiferent dac\u0103 acesta exist\u0103 sau nu), aceasta va fi \u00eenregistrat\u0103 \u00een memoria terminalului p\u00e2n\u0103 c\u00e2nd agentul nu va transfera coresponden\u021ba scris\u0103 de pe terminalul nostru pe al s\u0103u.<\/p>\n

View post on imgur.com<\/a><\/noindex><\/p><\/blockquote>\n

\nC\u00e2nd agentul oficiului 10500000000<\/b> (\u00een alte cuvinte \u2014 po\u0219ta\u0219ul) \u00ee\u0219i va conecta dispozitivul la terminalul nostru, scrisorile outgoing vor fi transferate pe unitatea sa de stocare. Ulterior, c\u00e2nd acesta \u00ee\u0219i va conecta dispozitivul la terminalul s\u0103u, aceste scrisori vor fi desc\u0103rcate \u00een memoria terminalului \u0219i vor a\u0219tepta ca destinatarul s\u0103 le transfere pe unitatea sa flash.<\/p>\n

Sesiunea de comunica\u021bie<\/h2>\n

\nS\u0103 \u00eencerc\u0103m s\u0103 transmitem un mesaj cu textul \u201eBun\u0103!\u201d de la 10455000001<\/b> la 10455000002<\/b>.<\/p>\n

View post on imgur.com<\/a><\/noindex><\/p><\/blockquote>\n

<\/p>\n

Asta e tot!<\/h2>\n

\nA\u0219 fi recunosc\u0103tor pentru orice critic\u0103 referitoare la codul surs\u0103 al proiectului \u0219i la articolul \u00een sine.<\/p>\n

V\u0103 mul\u021bumesc pentru aten\u021bie.<\/p>\n

Sursa: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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A\u0219 dori s\u0103 \u00eemp\u0103rt\u0103\u0219esc comunit\u0103\u021bii g\u00e2nduri interesante despre crearea unui serviciu de po\u0219t\u0103 electronic\u0103 autonom \u0219i descentralizat \u0219i s\u0103 demonstrez practic func\u021bionarea unei solu\u021bii deja existente.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/telegraf-elektronnaya-pochta-bez-interneta","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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\u00ab\u0422\u0435\u043b\u0435\u0433\u0440\u0430\u0444\u00bb \u2014 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u0430\u044f \u043f\u043e\u0447\u0442\u0430 \u0431\u0435\u0437 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430 | ProHoster","og:description":"\u0414\u043e\u0431\u0440\u044b\u0439 \u0434\u0435\u043d\u044c! 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