Hi,
I'm not familiar with openssh internals, but in order to "catch" the specials
characters, you may want to use ioctl(2) with the requests TCGETS and TCSETS.
* On Monday, 10 February 2014 09:45, Aaron Lewis <the.warl0ck.1989@xxxxxxxxx> wrote:
> Hi,
>
> I'm trying to write my own remote shell program,
>
> It simply connects to a remote server then copy the sock fd to stdin,
> stdout and stderr. And it works.
>
> But I found several problems:
> 1. It doesn't handle characters like ^A ^E or tab (any bash/readline stuff)
> -> openssh itself doesn't seem to incorporate readline, so the
> magic is not on readline
> 2. If I run command like VIM, it doesn't run.
> And buttons like "<ESC>:q" won't work
>
> Can someone enlighten me about what SSH did, so it all works perfectly?
>
> Attached the prototype:
>
> int sockfd = socket(PF_INET, SOCK_STREAM, 0);
> struct sockaddr_in remaddr = { 0 };
>
> remaddr.sin_family = AF_INET;
> remaddr.sin_port = htons(9999);
> remaddr.sin_addr.s_addr = inet_addr("192.168.56.1");
>
> if (connect(sockfd, (struct sockaddr *)&remaddr, sizeof(struct sockaddr)))
> ERR_QUIT("connect");
>
> for (int i = 0; i < 2; ++i )
> dup2 (sockfd, i);
> execl("/bin/bash", "/bin/bash", "-i", NULL);
>
>
>
> --
> Best Regards,
> Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/
> Finger Print: 9F67 391B B770 8FF6 99DC D92D 87F6 2602 1371 4D33
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