wiki.postnix Mirror of the Plan 9 wiki taken 07/16/2017

This page describes how to FTP files from a Plan 9 terminal to an an ipaq running WinCE. You can use FTP rather than ActiveSync to download the linux "osloader" to your ipaq. If you do not have a Windows machine to run ActiveSync, then these instructions are for you. Attribution: This is based on a similar process for linux outlined at [http://www.handhelds.org/minihowto/wince-link/index.html]. You need the WinCE Internet Explorer, a serial cradle, and a Plan 9 terminal with a serial device. The idea is to run an FTP server on the terminal, establish a PPP connection to the ipaq, and use WinCE's IE to download files. CUSTOMIZE PPP Customize ppp(8) to skip authentication when run as a server. This is necessary because it is not evident how to set a WinCE user and secret for CHAP. Here is a patch to the February 21, 2003 version of ppp.c that disables authentication when given an empty secret (with -s ''): ! /sys/src/cmd/ip/ppp/ppp.c:16 a ppp.c:17 ! > static int skipchap = 0; ! /sys/src/cmd/ip/ppp/ppp.c:253 c ppp.c:254 ! < if(server) ! --- ! > if(server && !skipchap) ! /sys/src/cmd/ip/ppp/ppp.c:2617 a ppp.c:2619,2622 ! > if (strlen(secret) == 0) { ! > secret = nil; ! > skipchap = 1; ! > } ON THE TERMINAL Run an FTP server and your custom PPP server on the terminal. The following examples illustrate what you might send to an interactive rc(1). * Choose an unused IP address for the bitsy. You also need your terminal's IP address. ! bitsyip=192.168.1.22 ! termip=`{ndb/query sys $sysname ip} * Create a directory to hold configuration files and your FTP server's root directory. ! root=/usr/$user/tmp/bitsy ! mkdir $root * Create an FTP root directory and namespace(6) file. ! mkdir $root/ftp ! echo 'mount #s/boot' / > $root/namespace.ftp ! echo 'bind '$root'/ftp /' >> $root/namespace.ftp * Use listen1 (in listen(8)) and ftpd (in ipserv(8)) to run your FTP server: ! aux/listen1 -tv tcp!*!ftp /bin/ip/ftpd -An $root/namespace.ftp & * Create a chat file for dealing with WinCE's pre-PPP text. ! echo ''''' CLIENT' > $root/chat ! echo 'CLIENTSERVER ''''' >> $root/chat * Run your modified ppp(8) server; this example assumes the ipaq is connected to /dev/eia0 and your custom binary is called "myppp". ! myppp -p /dev/eia0 -b 115200 -f -s '' -S -uM $root/chat $termip $bitsyip You can test your FTP server in another window with "ftpfs $sysname". After logging in as none, you should see the contents of $root/ftp under /n/ftp. ON THE IPAQ Configure WinCE to talk to the terminal and establish a PPP connection. The following worked with WinCE 3.0.9348 (Build 9616). See [http://www.handhelds.org/minihowto/wince-link/index.html] for alternative instructions. * In Start, Settings, Connections, PC, create a new connection called 9 with PPP, the $bitsyip IP address, 115200 baud, eight data bits, no parity, one stop bit, hardware flow control, and autosync turned off. * Run Start, Programs, Connections, 9. You can test the connection with "ip/ping $bitsyip" on your terminal. USING THE CONNECTION Put the files you want to download in $root/ftp on the terminal. Open IE on the bitsy, turn on the address bar, if necessary, and enter ! ftp://$termip/ where $termip is your terminal's IP address.