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List:       libssh2-devel
Subject:    Re: [libssh2] Pty resizing
From:       webmaster () keyphrene ! com
Date:       2007-12-26 7:49:51
Message-ID: 45031.84.14.16.171.1198655391.squirrel () webmail ! imingo ! net
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Thanks,

This code works fine, I use it in Naja.

I have developed the libssh2 binding for python. Naja is Webdav, FTP, SFTP
client and  SSH Terminal.

http://www.keyphrene.com/download/preview/naja137.exe
http://www.keyphrene.com/products/naja/

cheers
Vincent.


> Oh cool! Good work Vincent. I looked over what the last person sent
> about sending a certain type of SSH request, but that seemed like
> something that should have been in the library... and here it is!
>
> Developers: Will this be included in the mainstream library? Seems
> like a much needed addition! At least from my perspective, since I'm
> writing a SSH client ;p
>
> Paul
>
> On Dec 25, 2007 2:28 AM, webmaster@keyphrene.com
> <webmaster@keyphrene.com> wrote:
>> Hi,
>>
>> I have added libssh2_channel_request_pty_size method for libssh2-0.17.
>> This method works fine.
>>
>> LIBSSH2_API int
>> libssh2_channel_request_pty_size(LIBSSH2_CHANNEL * channel, int width,
>> int height,
>>                               int width_px, int height_px)
>> {
>>    LIBSSH2_SESSION *session = channel->session;
>>    unsigned char *s, *data;
>>    static const unsigned char reply_codes[3] =
>>        { SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 };
>>    unsigned long data_len;
>>    int rc;
>>
>>    if (channel->reqPTY_state == libssh2_NB_state_idle) {
>>        /* 41 = packet_type(1) + channel(4) + pty_req_len(4) +
>> "window-change"(13) +
>>         * want_reply(1) + width(4) + height(4) + width_px(4) +
>>         * height_px(4)  */
>>        channel->reqPTY_packet_len = 39;
>>
>>        /* Zero the whole thing out */
>>        memset(&channel->reqPTY_packet_requirev_state, 0,
>>               sizeof(channel->reqPTY_packet_requirev_state));
>>
>>        _libssh2_debug(session, LIBSSH2_DBG_CONN,
>>                       "changing tty size on channel %lu/%lu",
>> channel->local.id,
>>                       channel->remote.id);
>>
>>        s = channel->reqPTY_packet =
>>            LIBSSH2_ALLOC(session, channel->reqPTY_packet_len);
>>        if (!channel->reqPTY_packet) {
>>            libssh2_error(session, LIBSSH2_ERROR_ALLOC,
>>                          "Unable to allocate memory for pty-request",
>> 0);
>>            return -1;
>>        }
>>
>>        *(s++) = SSH_MSG_CHANNEL_REQUEST;
>>        libssh2_htonu32(s, channel->remote.id);
>>        s += 4;
>>        libssh2_htonu32(s, sizeof("window-change") - 1);
>>        s += 4;
>>        memcpy(s, "window-change", sizeof("window-change") - 1);
>>        s += sizeof("window-change") - 1;
>>
>>        *(s++) = 0x00; // Don't reply
>>              libssh2_htonu32(s, width);
>>        s += 4;
>>        libssh2_htonu32(s, height);
>>        s += 4;
>>        libssh2_htonu32(s, width_px);
>>        s += 4;
>>        libssh2_htonu32(s, height_px);
>>        s += 4;
>>
>>        channel->reqPTY_state = libssh2_NB_state_created;
>>    }
>>
>>    if (channel->reqPTY_state == libssh2_NB_state_created) {
>>        rc = libssh2_packet_write(session, channel->reqPTY_packet,
>>                                  channel->reqPTY_packet_len);
>>        if (rc == PACKET_EAGAIN) {
>>            return PACKET_EAGAIN;
>>        } else if (rc) {
>>            libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
>>                          "Unable to send window-change packet", 0);
>>            LIBSSH2_FREE(session, channel->reqPTY_packet);
>>            channel->reqPTY_packet = NULL;
>>            channel->reqPTY_state = libssh2_NB_state_idle;
>>            return -1;
>>        }
>>        LIBSSH2_FREE(session, channel->reqPTY_packet);
>>        channel->reqPTY_packet = NULL;
>>
>>        libssh2_htonu32(channel->reqPTY_local_channel,
>> channel->local.id);
>>
>>        channel->reqPTY_state = libssh2_NB_state_sent;
>>        return 0;
>>    }
>>
>>
>>    channel->reqPTY_state = libssh2_NB_state_idle;
>>    return -1;
>> }
>>
>>
>>
>> Best Regards
>> Vincent Jaulin
>>
>> Paul Thomas a écrit :
>>
>> > Developers,
>> >
>> > I've got a simpler question than last time. And btw, thanks for the
>> > help on that last one!
>> >
>> > Ok, I know that I can use libssh2_channel_request_pty_ex() to get a
>> > terminal and specify its width and height. Is there anyway that after
>> > that pty is alive that I can make it re-adjust its dimensions?
>> >
>> > Thanks,
>> > Paul
>> >
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>> >
>>
>>
>



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