tftpd issue?

[Reuben Balik]

Oh, didn't realize only binary mode was supported. I switched to octet mode
and it worked fine. Thanks

On Thu, Apr 10, 2008 at 3:43 PM, Denys Vlasenko <vda.linux at googlemail.com>
wrote:

> On Thursday 10 April 2008 20:58, Reuben Balik wrote:
> > I'm trying to use tftpd on my TI-OMAP board with busybox and am unable
> to
> > transfer a file.
> > I made a /var/tftp directory and put a file in it called test
> > I then run on the board the command:
> > udpsvd -v -E 0 69 tftpd /var/tftp/
> >
> > In a pc's tftp client I set it to ascii mode and  type "get test"
> > In the client I see:
> > tftp> get test
> > getting from 128.174.133.205:test to test [netascii]
> > sent RRQ <file=test, mode=netascii>
> > received ERROR <code=0, msg=malformed packet>
> > Error code 0: malformed packet
> >
> > And on the board I see:
> > udpsvd: listening on 0.0.0.0:69, starting
> > udpsvd: start 897 128.174.133.205:69-128.174.133.196:32846
> > tftpd: malformed packet
> > udpsvd: status 1/30
> > udpsvd: end 897 exit 1
> > udpsvd: status 0/30
>
> I'd like to see the packet being sent.
> Can you show "tcpdump -nlieth0 -s0 -xX port 69" output?
>
> The code which says "malformed packet" is:
>
>        error_msg = "malformed packet";
>        opcode = ntohs(*(uint16_t*)block_buf);
>        if (result < 4 || result >= sizeof(block_buf)
>         || block_buf[result-1] != '\0'
>         || (USE_FEATURE_TFTP_PUT(opcode != TFTP_RRQ) /* not download */
>             USE_GETPUT(&&)
>             USE_FEATURE_TFTP_GET(opcode != TFTP_WRQ) /* not upload */
>            )
>        ) {
>                goto err;
>        }
>        local_file = block_buf + 2;
> ...
>        mode = local_file + strlen(local_file) + 1;
>        if (mode >= block_buf + result || strcmp(mode, "octet") != 0) {
>                goto err;
>        }
>
> I'd hazard to guess that your mode is not "octet" but "ascii",
> and bbox's tftpd doesn't support that.
>
> But seeing packet capture results will be much better than just guessing.
> --
> vda
>



-- 
Reuben Balik
President
Sigma Tau Gamma, Alpha Chi Chapter
Computer Engineering
University of Illinois
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