{"id":83379,"date":"2020-05-30T19:42:20","date_gmt":"2020-05-30T17:42:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/usb-over-ip-v-domashnih-usloviyah"},"modified":"2020-05-30T19:42:20","modified_gmt":"2020-05-30T17:42:20","slug":"usb-over-ip-v-domashnih-usloviyah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/administrirovanie\/usb-over-ip-v-domashnih-usloviyah","title":{"rendered":"USB over IP a casa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A volte si ha il desiderio di lavorare con un dispositivo collegato tramite USB senza tenerlo sulla scrivania accanto al laptop. In questo caso, il mio dispositivo \u00e8 un incisore laser cinese da 500 mW, un oggetto piuttosto scomodo in prossimit\u00e0. Oltre al pericolo immediato per gli occhi, durante il funzionamento del laser si generano sostanze tossiche, quindi il dispositivo deve trovarsi in un ambiente ben ventilato e preferibilmente isolato dalle persone. Ma come gestire un dispositivo del genere? Ho trovato per caso la risposta a questa domanda mentre navigavo nel repository OpenWRT, sperando di trovare un'applicazione adeguata per un vecchio router D-Link DIR-320 A2. Per il collegamento ho deciso di utilizzare quanto descritto in precedenza su Habr. <b>Tunnel USB over IP<\/b>, tuttavia tutte le istruzioni per la sua installazione sono diventate obsolete, quindi scrivo la mia.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nOpenWRT \u00e8 un sistema operativo che non ha bisogno di presentazioni, quindi non entrer\u00f2 nei dettagli sulla sua installazione. Per il mio router ho preso l'ultima versione stabile di OpenWrt 19.07.3 e l'ho collegato al punto di accesso principale tramite Wi-Fi come client, scegliendo la modalit\u00e0 <i>lan<\/i>, per non disturbare il firewall.<\/p>\n<h2>Parte server<\/h2>\n<p>\nAgiamo secondo <noindex><a rel=\"nofollow\" href=\"https:\/\/openwrt.org\/docs\/guide-user\/services\/usb.iptunnel\">le istruzioni ufficiali<\/a><\/noindex>. Dopo la connessione via ssh, installiamo i pacchetti necessari.<\/p>\n<pre><code class=\"bash\">root@OpenWrt:~# opkg update\nroot@OpenWrt:~# opkg install kmod-usb-ohci usbip-server usbip-client<\/code><\/pre>\n<p>\nColleghiamo ora il nostro dispositivo alla porta USB del router (nel mio caso si tratta di: un hub USB, una chiavetta USB con il file system del router montato, a causa dello spazio insufficiente sul disco interno, e, direttamente, il incisore).<\/p>\n<p>Proviamo a visualizzare l'elenco dei dispositivi connessi:<\/p>\n<pre><code class=\"bash\">root@OpenWrt:~# usbip list -l<\/code><\/pre>\n<p>\nVuoto.<\/p>\n<p>Attraverso una ricerca su Google, abbiamo trovato il colpevole, che si \u00e8 rivelato essere la libreria <b>libudev-fbsd<\/b>.<br \/>\nEstraiamo manualmente dalla repository l'ultima versione funzionante <b>libudev_3.2-1<\/b> dalla release OpenWRT 17.01.7 per la nostra architettura, nel mio caso \u00e8 libudev_3.2-1_mipsel_mips32.ipk. Utilizziamo wget\/scp per caricarla nella memoria del router e reinstalliamola<\/p>\n<pre><code class=\"bash\">root@OpenWrt:~# opkg remove --force-depends libudev-fbsd\nroot@OpenWrt:~# opkg install libudev_3.2-1_mipsel_mips32.ipk\n<\/code><\/pre>\n<p>\nControllando:<\/p>\n<pre><code class=\"bash\">root@OpenWrt:~# usbip list -l\n - busid 1-1.1 (090c:1000)\n   Silicon Motion, Inc. - Taiwan (in precedenza Feiya Technology Corp.) : Flash Drive (090c:1000)\n\n - busid 1-1.4 (1a86:7523)\n   QinHeng Electronics : adattatore USB-Serial HL-340 (1a86:7523)<\/code><\/pre>\n<p>\nIl cinese collegato all'hub USB ha ricevuto bsuid <b>1-1.4<\/b>. Ricordato.<\/p>\n<p>Ora avviamo il demone:<\/p>\n<pre><code class=\"bash\">root@OpenWrt:~# usbipd -D<\/code><\/pre>\n<p>\ne bindiamo il cinese<\/p>\n<pre><code class=\"bash\">root@OpenWrt:~# usbip bind -b 1-1.4\nusbip: info: bind device on busid 1-1.4: complete<\/code><\/pre>\n<p>\nControlliamo che tutto funzioni:<\/p>\n<pre><code class=\"bash\">root@OpenWrt:\/home# netstat -alpt\nConnessioni Internet attive (server e stabilite)\nProto Recv-Q Send-Q Indirizzo locale           Indirizzo estero         Stato       PID\/Nome programma\ntcp        0      0 0.0.0.0:3240            0.0.0.0:*               LISTEN      1884\/usbipd<\/code><\/pre>\n<p>\nPer continuare a collegare il dispositivo automaticamente, modifichiamo <i>\/etc\/rc.local<\/i>, aggiungendo prima di <i>exit 0<\/i> il seguente:<\/p>\n<pre><code class=\"bash\">usbipd -D &amp;\nsleep 1\nusbip bind -b 1-1.4<\/code><\/pre>\n<p><\/p>\n<h2>Parte client<\/h2>\n<p>\nCerchiamo di collegare il dispositivo a Windows 10, utilizzando l\u2019istruzione sopra menzionata di openwrt.org. Dico subito: l\u2019idea \u00e8 destinata a fallire. In primo luogo, viene considerato solo Windows 7 x64. In secondo luogo, viene fornito un link a un thread su sourceforge.net, nel quale si propone di scaricare da Dropbox un driver patchato nel 2014. Nel tentativo di eseguirlo su Windows 10 e collegarsi al nostro dispositivo, otteniamo un errore:<\/p>\n<pre><code class=\"bash\">c:Utilsusbip&gt;usbip -a 192.168.31.203 1-1.4\nusbip per Windows ($Id$)\n\n*** ERRORE: impossibile trovare il dispositivo<\/code><\/pre>\n<p>\nQuesto \u00e8 dovuto al fatto che il client non \u00e8 compatibile con il server costruito su un kernel pi\u00f9 vecchio della versione 3.14.<br \/>\nIl server usbip su OpenWRT 19.07.3 \u00e8 costruito su un kernel 4.14.180.<\/p>\n<p>Continuando la ricerca, mi imbatto in uno sviluppo attuale del client per Windows su <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cezanne\/usbip-win\">github<\/a><\/noindex>. Ok, \u00e8 supportato Windows 10 x64, ma il cliente \u00e8 solo un test, quindi ci sono alcune limitazioni.<\/p>\n<p>Quindi, per prima cosa, ci chiedono di installare il certificato, e lo chiedono due volte. Ok, lo mettiamo in Autorit\u00e0 di certificazione radice attendibili e in Editor dei criteri di gruppo tendenzialmente attendibili.<\/p>\n<p>Successivamente \u00e8 necessario mettere il sistema operativo in modalit\u00e0 di test. Questo si fa con il comando<\/p>\n<pre><code class=\"bash\">bcdedit.exe \/set TESTSIGNING ON<\/code><\/pre>\n<p>\nNon ci sono riuscito la prima volta, a causa di <b>secure boot<\/b>. Per disattivarlo, \u00e8 necessario riavviarsi in UEFI e impostare secure boot su disabilitato. Su alcuni modelli di laptop potrebbe essere necessario impostare una password supervisor.<\/p>\n<p>Dopo di ci\u00f2, ci avviamo in Windows e facciamo <i>bcdedit.exe \/set TESTSIGNING ON<\/i><br \/>\nWindows dice che va tutto bene. Riavviamo di nuovo e vediamo nell'angolo in basso a destra la scritta Modalit\u00e0 di test, la versione e il numero di build del sistema operativo. <\/p>\n<p>Qual \u00e8 lo scopo di tutte queste manovre? Per installare un driver non firmato <b>USB\/IP VHCI<\/b>. Si suggerisce di farlo scaricando i file usbip.exe, usbip_vhci.sys, usbip_vhci.inf, usbip_vhci.cer, usbip_vhci.cat, ed eseguendo con diritti di amministratore<\/p>\n<pre><code class=\"bash\">usbip.exe install<\/code><\/pre>\n<p>\noppure il secondo metodo, l'installazione dell'hardware Legacy in modo manuale. Ho scelto la seconda opzione, ho ricevuto un avviso per l'installazione di un driver non firmato e ho acconsentito.<\/p>\n<p>Iniziamo verificando se possiamo connetterci a un dispositivo USB remoto eseguendo il comando:<\/p>\n<pre><code class=\"bash\">usbip.exe list -r<\/code><\/pre>\n<p>\notteniamo l'elenco dei dispositivi:<\/p>\n<pre><code class=\"bash\">c:Utilsusbip&gt;usbip.exe list -r 192.168.31.203\nusbip: errore: impossibile aprire il database degli id usb\nDispositivi USB esportabili\n=========================\n - 192.168.31.203\n      1-1.4: fornitore sconosciuto : prodotto sconosciuto (1a86:7523)\n           : \/sys\/devices\/ssb0:1\/ehci-platform.0\/usb1\/1-1\/1-1.4\n           : classe sconosciuta \/ sotto classe sconosciuta \/ protocollo sconosciuto (ff\/00\/00)<\/code><\/pre>\n<p>\nsull'errore <i>usbip: errore: impossibile aprire il database degli id usb<\/i> non facciamo attenzione, non influisce sul funzionamento.<\/p>\n<p>Ora bindiamo il dispositivo:<\/p>\n<pre><code class=\"bash\">c:Utilsusbip&gt;usbip.exe attach -r 192.168.31.203 -b 1-1.4<\/code><\/pre>\n<p>\nTutto, Windows ha rilevato un nuovo dispositivo, ora \u00e8 possibile utilizzarlo come se fosse fisicamente collegato al laptop.<\/p>\n<p>Con il laser cinese ho dovuto faticare un po', poich\u00e9 tentando di installare il suo driver CH341SER tramite l'installer fornito (s\u00ec, il laser \u00e8 su Arduino), USB\/IP VHCI faceva andare Windows in BSOD. Tuttavia, l'installazione del driver CH341SER <b>fino a<\/b> con il collegamento del dispositivo tramite usbip.exe risolveva il problema.<\/p>\n<p>In sintesi: il laser fa rumore e fuma in cucina con la finestra aperta e la porta chiusa, osservo il processo di incisione da un'altra stanza attraverso il software originale, che non percepisce il trucco.<\/p>\n<p>Fonti utilizzate:<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/openwrt.org\/docs\/guide-user\/services\/usb.iptunnel\">https:\/\/openwrt.org\/docs\/guide-user\/services\/usb.iptunnel<\/a><\/noindex><br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cezanne\/usbip-win\">https:\/\/github.com\/cezanne\/usbip-win<\/a><\/noindex><br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/504338\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u043d\u043e\u0433\u0434\u0430 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