{"id":110697,"date":"2023-10-09T15:10:16","date_gmt":"2023-10-09T13:10:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/novaya-versiya-pop3-i-imap4-servera-dovecot-2-3-21"},"modified":"2023-10-09T15:10:16","modified_gmt":"2023-10-09T13:10:16","slug":"novaya-versiya-pop3-i-imap4-servera-dovecot-2-3-21","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/novaya-versiya-pop3-i-imap4-servera-dovecot-2-3-21","title":{"rendered":"Ny version av POP3 och IMAP4-servern Dovecot 2.3.21","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En ny version av den plattformsoberoende h\u00f6gpresterande POP3\/IMAP4-servern Dovecot 2.3.21 har publicerats, som st\u00f6der protokollen POP3 och IMAP4rev1 med popul\u00e4ra till\u00e4gg, s\u00e5som SORT, THREAD och IDLE, samt autentiserings- och krypteringsmekanismer (SASL, TLS, SCRAM). Dovecot bibeh\u00e5ller fullst\u00e4ndig kompatibilitet med klassiska mbox och Maildir genom att anv\u00e4nda externa index f\u00f6r att \u00f6ka prestandan. F\u00f6r att ut\u00f6ka funktionaliteten kan plugins anv\u00e4ndas (till exempel implementeras kvoter och ACL via plugins). Projektets kod distribueras under licenserna LGPL och MIT.      <\/p>\n<p>Huvudsakliga f\u00f6r\u00e4ndringar:  <\/p>\n<ul>\n<li class=\"l\"> lib-oauth2: Validering av JWT-token utan f\u00e4ltet &#171;typ&#187; \u00e4r nu till\u00e5tet. F\u00e4ltet &#171;typ&#187; anv\u00e4nds inte av vissa nyckelutf\u00e4rdare f\u00f6r att spara utrymme, s\u00e4rskilt kubernetes. Nu till\u00e5ts avsaknad av &#171;typ&#187;, men om det finns m\u00e5ste det fortfarande vara &#171;jwt&#187;.\n<li class=\"l\"> auth: Svar fr\u00e5n passdb och userdb kan inneh\u00e5lla v\u00e4rdet &#171;event_&lt;name&gt;=value&#187;, vilket l\u00e4ggs till inloggningsh\u00e4ndelsen och e-postanv\u00e4ndarens h\u00e4ndelse respektive.\n<li class=\"l\"> lib-master: S\u00e4tter processens rubrik vid olika initieringssteg f\u00f6r att tydligt f\u00f6rklara vad processen f\u00f6rv\u00e4ntar sig.\n<li class=\"l\"> lib-storage: Intervallet mail_temp_scan_interval \u00f6kas nu med 0\u202630% beroende p\u00e5 anv\u00e4ndarnamnets hash f\u00f6r att minska risken f\u00f6r belastningstoppar.\n<li class=\"l\"> lib-storage: Skanning av tempor\u00e4ra filer flyttades fr\u00e5n att ske vid \u00f6ppnandet av postl\u00e5dan till vid st\u00e4ngning f\u00f6r att minska f\u00f6rdr\u00f6jningen som upplevs av anv\u00e4ndarna.\n<li class=\"l\"> stats: Om f\u00e4lten anges i statistiken, exporteras alla dessa f\u00e4lt som r\u00e4knare f\u00f6r prometheus i exposition-format.\n<li class=\"l\"> &#171;*-login&#187;: Processer kunde krascha vid bristf\u00e4lliga SSL-anslutningar.    &#8212; acl: Vid laddning av pluginber\u00e4knades flaggorna &#092;&#092;HasChildren och &#092;&#092;HasNoChildren felaktigt f\u00f6r postl\u00e5dor som inneh\u00f6ll &#8216;*&#8217; och &#8216;%&#8217; i sina namn.\n<li class=\"l\"> auth: En krasch intr\u00e4ffade vid ett misslyckat anslutning till PostgreSQL-databasen vid start.\n<li class=\"l\"> auth: Vid inloggning med felaktiga l\u00f6senord (t.ex. med ok\u00e4nd schema) gavs ist\u00e4llet f\u00f6r &#171;internt fel&#187; ett felmeddelande &#171;password mismatch&#187; i passdb.\n<li class=\"l\"> auth: Mekanismerna XOAUTH2 och OAUTHBEARER gav inte ett protokollspecifikt felmeddelande vid n\u00e5gra fel. Detta f\u00f6rsv\u00e5rade s\u00e4rskilt uppt\u00e4ckten av OIDC.\n<li class=\"l\"> dbox: Om rubriken last_temp_file_scan inte har angetts (s\u00e4rskilt efter dsync-migrering), s\u00e5 startades alltid en skanning av tillf\u00e4lliga filer n\u00e4sta g\u00e5ng postl\u00e5dan \u00f6ppnades. Detta kunde orsaka en belastningstoppar efter migrationer. Detta har \u00e5tg\u00e4rdats genom att anv\u00e4nda atime f\u00f6r postl\u00e5dans katalog n\u00e4r rubriken saknas, vilket vanligtvis flyttar skanningstiden fram\u00e5t.\n<li class=\"l\"> dict-redis: Det uppstod ett fel vid \u00e5terst\u00e4llning av transaktioner.\n<li class=\"l\">  dsync: Vid borttagning av postl\u00e5da p\u00e5 den avl\u00e4gsna sidan, n\u00e4r avgr\u00e4nsarna f\u00f6r hierarkiska niv\u00e5er inte matchade, uppstod en o\u00e4ndlig loop som ledde till minnesutfl\u00f6de.\n<li class=\"l\"> dsync: Inkrementell dsync utf\u00f6rdes inte f\u00f6r mappnamn som slutade med &#8216;%&#8217; om v\u00e4rdet BROKENCHAR inte var inst\u00e4llt. Mappnamn med &#8216;%&#8217; p\u00e5 andra st\u00e4llen ledde ocks\u00e5 till on\u00f6dig omd\u00f6pning av mappen till ett tempor\u00e4rt namn och tillbaka vid varje inkrementell dsync. Regression v2.3.19.\n<li class=\"l\">  imap-hibernate: Om det uppstod en timeout vid l\u00e5sning av IMAP-klienten med meddelandet &#171;(version received)&#187;, kunde l\u00e5sningen senare slutf\u00f6ras framg\u00e5ngsrikt och forts\u00e4tta normalt. Detta ledde till f\u00f6rvirring eftersom imap-hibernate redan hade registrerat att klienten hade kopplats fr\u00e5n. Detta kan undvikas genom att f\u00e5 anslutningen att avslutas vid timeout f\u00f6r hibernation.\n<li class=\"l\"> imapc: Krasch vid borttagning av en mapp som visades via den virtuella plugin.\n<li class=\"l\"> imapc: Svar EXPUNGE, EXISTS eller FETCH med <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/dts-los-angeles\/\"   title=\"servern\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3724\">servern<\/a> f\u00f6r den tidigare valda postl\u00e5dan kunde behandlas som om de tillh\u00f6rde den nya postl\u00e5dan som valdes just nu. Detta kunde leda till att varningar framkom.\n<li class=\"l\"> lib-http: HTTP-servern Dovecot (doveadm, stats\/openmetrics) kunde koppla bort HTTP-kunder f\u00f6re fullst\u00e4ndig skickning av svaret. Detta intr\u00e4ffade endast p\u00e5 belastade servrar d\u00e4r k\u00e4rnans socketbuffrar var kraftigt \u00f6verfyllda.\n<li class=\"l\"> lib-http: M\u00f6jlig krasch av http-servern vid tidig avkoppling av kunden har \u00e5tg\u00e4rdats. Regression i 2.3.18.\n<li class=\"l\"> lib-index: Skada p\u00e5 indexfilen kunde leda till krasch. \u00c5tg\u00e4rdat: Panic: file mail-transaction-log-view.c: line 165 (mail_transaction_log_view_set): assertion failed: (min_file_seq &lt;= max_file_seq).\n<li class=\"l\">  lib-index: Rensning av befintlig cachefil st\u00f6rre \u00e4n 1 GB kan ha lett till ett fel. Nu raderas cachefiler som fortfarande \u00f6verskrider 1 GB efter rensning. \u00c5tg\u00e4rdat: Panic: file mail-index-util.c: line 10 (mail_index_uint32_to_offset): assertion failed: (offset &lt; 0x40000000).\n<li class=\"l\"> lib-lua: HTTP-klienten kunde inte identifiera DNS-namn i e-postprocesserna, eftersom den f\u00f6rv\u00e4ntade att &#171;dns-client&#187;-socket skulle befinna sig i den aktuella katalogen.\n<li class=\"l\"> lib-oauth2: Dovecot skickade client_id och client_secret som POST-parametrar till introspektionstj\u00e4nsten. Vid Basic auth \u00e4r deras anv\u00e4ndning dock valfri.\n<li class=\"l\"> lib-oauth2: Validering av JWT &#171;aud&#187; utf\u00f6rdes inte om &#171;aud&#187; saknades i token men var konfigurerad i Dovecot.\n<li class=\"l\"> lib-oauth2: F\u00f6r str\u00e4ng typkontroll av JWT-nycklar.\n<li class=\"l\"> lib-oauth2: M\u00e5lgruppen f\u00f6r JWT-token kontrollerades inte mot client_id, vilket specificationen kr\u00e4ver.\n<li class=\"l\"> lib-ssl-iostream: Anv\u00e4ndningen av parametern ssl_require_crl=yes kan ha lett till fel vid CRL-kontroll f\u00f6r utg\u00e5ende SSL\/TLS-anslutningar, trots att det var t\u00e4nkt att den endast skulle p\u00e5verka CRL-kontrollen f\u00f6r klienter. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/ssl-sertifikat\/\"   title=\"SSL-certifikat\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"345\">SSL-certifikat<\/a>. v2.3.17 regression.\n<li class=\"l\"> lib-sql: MySQL-drivrutinen till\u00e4t minnesl\u00e4ckor vid misslyckade anslutningar.\n<li class=\"l\"> lib-storage: Olika korrigeringar vid brist p\u00e5 diskutrymme.\n<li class=\"l\"> master: Konfigurationen av idle_kill-tj\u00e4nsten fungerade inte som den skulle p\u00e5 belastade servrar. Det var mycket osannolikt att n\u00e5gon process var inaktiv tillr\u00e4ckligt l\u00e4nge f\u00f6r att bli d\u00f6dad. Dessutom, vid ett stort antal processer (t.ex. imap) anv\u00e4nde idle_kill-koden en hel del CPU p\u00e5 huvudprocessen. Nu kommer varje idle_kill-tidsintervall att sp\u00e5ra det minsta antalet inaktiva processer och sedan d\u00f6da detta antal.\n<li class=\"l\"> mdbox: Kontroll av tempor\u00e4ra filer utf\u00f6rdes f\u00f6r alltid tomma kataloger.\n<li class=\"l\"> mdbox: Vid skrivning av meddelanden gjordes anropet till fdatasync() i fel \u00f6verordnad katalog. Dessutom intr\u00e4ffade ett fall av krasch ist\u00e4llet f\u00f6r att skriva ett fel i loggen vid ett misslyckande.\n<li class=\"l\"> notify_status: Pluginet kraschar vid misslyckad anv\u00e4ndarinitialisering.    &#8212; pop3: Att skicka kommandot med tecknet &#8216;:&#8217; ledde till ett fel &#171;assert-crash&#187;. Regression i version 2.3.18.\n<li class=\"l\"> stats: Paniken som uppstod vid \u00e5tkomst till en icke-existerande h\u00e4ndelseexport\u00f6r vid dynamisk till\u00e4gg av en ny m\u00e4tning med kommandot &#171;doveadm stats add&#187; har \u00e5tg\u00e4rdats. Nu visas ett korrekt felmeddelande.\n<li class=\"l\"> statistik: Om processen har exporterats m\u00e5nga h\u00e4ndelser och sedan avslutats, kan n\u00e5gra av de senaste h\u00e4ndelserna ha g\u00e5tt f\u00f6rlorade.\n<li class=\"l\"> statistik: Felaktiga namn p\u00e5 Prometheus-m\u00e4rkningar skapades vid vissa konfigurationer av histogram group_by. Prometheus avvisade dessa m\u00e4rken.\n<li class=\"l\"> v\u00e4lkommen: Plugin fungerade inte i vissa situationer n\u00e4r INBOX skapades men inte \u00f6ppnades, till exempel om GETMETADATA anv\u00e4ndes innan INBOX \u00f6ppnades.  <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59895\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043c\u043d\u043e\u0433\u043e\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e POP3\/IMAP4-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Dovecot 2.3.21, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u044b POP3 \u0438 IMAP4rev1 \u0441 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u043c\u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f\u043c\u0438, \u0442\u0430\u043a\u0438\u043c\u0438 \u043a\u0430\u043a SORT, THREAD \u0438 IDLE, \u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430\u043c\u0438 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0438 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f (SASL, TLS, SCRAM). Dovecot \u0441\u043e\u0445\u0440\u0430\u043d\u044f\u0435\u0442 \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c \u0441 \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 mbox \u0438 Maildir, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044f \u0432\u043d\u0435\u0448\u043d\u0438\u0435 \u0438\u043d\u0434\u0435\u043a\u0441\u044b \u0434\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u0414\u043b\u044f \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043c\u043e\u0433\u0443\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u043b\u0430\u0433\u0438\u043d\u044b (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0447\u0435\u0440\u0435\u0437 \u043f\u043b\u0430\u0433\u0438\u043d\u044b \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u044b [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-110697","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043c\u043d\u043e\u0433\u043e\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435\u043d\u043d\u043e\u0433\u043e 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