Pasting via ssh causes data loss
Mel
fbsd.questions at rachie.is-a-geek.net
Sun Nov 30 08:37:19 PST 2008
On Sunday 30 November 2008 06:46:59 Eugene Pimenov wrote:
> Hello everyone,
>
> I'm not really sure weither it's related to freebsd or ssh.
>
> When I paste a lot of data (6060 bytes, 60 lines 100 bytes each +
> ‘\n’) via ssh into `cat > test.txt` or the small program, one freebsd
> receives 5181, another receives 3221 bytes.
>
> The number of bytes freebsd receives are always the same.
>
> I can't reproduce this on linux (OpenSSH 4.3p2 on debian and OpenSSH
> 4.7p1 on 2 gentoo boxes). Also, I have one freebsd box without this
> problem (7.0-STABLE, openssh 4.5p1).
>
> Source of the small program:
>
> #include <stdio.h>
>
> int main()
> {
> char buf[10000];
> size_t readed = 0;
> while(!feof(stdin)) {
> readed+=fread(buf, 1, sizeof(buf), stdin);
> }
>
> printf("I've received %d bytes\n", readed);
> return 0;
> }
>
> Versions of sshd are “OpenSSH_4.5p1 FreeBSD-20061110, OpenSSL 0.9.8e
> 23 Feb 2007”. FreeBSD versions are FreeBSD 7.0-BETA4 and FreeBSD 7.0-
> RELEASE.
>
> Why is it happening? What should I do to stop this? It's pretty
> annoying.
Not sure, but can you copy files via cat? As in:
cat /tmp/foo | ssh machine "cat - >/tmp/foo"
If that isn't truncated, I can only think of clipboard limitations or tty
issues.
--
Mel
Problem with today's modular software: they start with the modules
and never get to the software part.
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