Go ahead and merge the work edwin@ on tftpd into the tree. It is a
lot better than what's in the tree now. Edwin tested it at a prior employer, but can't test it today. I've found that it works a lot better with the various uboot versions that I've used in my embedded work. Here's the pkg-descr from the port that describes the changes: It all started when we got some new routers, which told me the following when trying to upload configuration or download images from it: The TFTP server doesn't support the blocksize option. My curiousity was triggered, it took me some reading of RFCs and other documentation to find out what was possible and what could be done. Was plain TFTP very simple in its handshake, TFTP with options was kind of messy because of its backwards capability: The first packet returned could either be an acknowledgement of options, or the first data packet. Going through the source code of src/libexec/tftpd and going through the code of src/usr.bin/tftp showed that there was a lot of duplicate code, and the addition of options would only increase the amount of duplicate code. After all, both the client and the server can act as a sender and receiver. At the end, it ended up with a nearly complete rewrite of the tftp client and server. It has been tested against the following TFTP clients and servers: - Itself (yay!) - The standard FreeBSD tftp client and server - The Fedora Core 6 tftp client and server - Cisco router tftp client - Extreme Networks tftp client It supports the following RFCs: RFC1350 - THE TFTP PROTOCOL (REVISION 2) RFC2347 - TFTP Option Extension RFC2348 - TFTP Blocksize Option RFC2349 - TFTP Timeout Interval and Transfer Size Options RFC3617 - Uniform Resource Identifier (URI) Scheme and Applicability Statement for the Trivial File Transfer Protocol (TFTP) It supports the following unofficial TFTP Options as described at http://www.compuphase.com/tftp.htm: blksize2 - Block size restricted to powers of 2, excluding protocol headers rollover - Block counter roll-over (roll back to zero or to one) From the tftp program point of view the following things are changed: - New commands: "blocksize", "blocksize2", "rollover" and "options" - Development features: "debug" and "packetdrop" If you try this tftp/tftpd implementation, please let me know if it works (or doesn't work) and against which implementaion so I can get a list of confirmed working systems. Author: Edwin Groothuis <edwin@FreeBSD.org>
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@ -2,15 +2,14 @@
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# $FreeBSD$
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PROG= tftpd
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SRCS= tftpd.c tftpsubs.c
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DPADD= ${LIBUTIL}
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LDADD= -lutil
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WARNS?= 1
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SRCS= tftpd.c tftp-io.c tftp-utils.c tftp-file.c tftp-transfer.c tftp-options.c
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WARNS= 3
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WFORMAT=0
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MAN= tftpd.8
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CFLAGS+=-I${.CURDIR}/../../usr.bin/tftp
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CFLAGS=-g -Wall
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CFLAGS+=-I${.CURDIR}/../../usr.bin/tftp -I${.CURDIR}/../../libexec/tftpd
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.PATH: ${.CURDIR}/../../usr.bin/tftp
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COPTFLAGS = -O
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LDFLAGS= -lwrap
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.include <bsd.prog.mk>
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.Nd Internet Trivial File Transfer Protocol server
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.Sh SYNOPSIS
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.Nm tftpd
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.Op Fl cClnwW
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.Op Fl cdClnow
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.Op Fl F Ar strftime-format
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.Op Fl s Ar directory
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.Op Fl u Ar user
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@ -150,6 +150,9 @@ compatible format string for the creation of the suffix if
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.Fl W
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is specified.
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By default the string "%Y%m%d" is used.
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.It Fl d
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Enables debug output.
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If specified twice, it will log DATA and ACK packets too.
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.It Fl l
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Log all requests using
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.Xr syslog 3
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@ -164,6 +167,8 @@ must also be enabled in the syslog configuration file,
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.It Fl n
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Suppress negative acknowledgement of requests for nonexistent
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relative filenames.
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.It Fl o
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Disable support for RFC2347 style TFTP Options.
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.It Fl s Ar directory
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Cause
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.Nm
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@ -240,10 +245,16 @@ and the
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and
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.Fl W
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options were introduced in
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.Fx 8.0 .
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.Fx 7 .
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.Pp
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Support for Timeout Interval and Transfer Size Options (RFC2349)
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was introduced in
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.Fx 5.0 ,
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support for the TFTP Blocksize Option (RFC2348) and the blksize2 option
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was introduced in
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.Fx 7 .
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.Sh BUGS
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Files larger than 33488896 octets (65535 blocks) cannot be transferred
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without client and server supporting blocksize negotiation (RFC1783).
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without client and server supporting blocksize negotiation (RFC2348).
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.Pp
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Many tftp clients will not transfer files over 16744448 octets (32767 blocks).
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