/*
* Processes input from the client and the program. Input data is stored
* in buffers and processed later.
*/
static void
process_input(struct ssh *ssh, fd_set *readset)
{
int len, r;
char buf[16384];
/* Read and buffer any input data from the client. */
if (FD_ISSET(connection_in, readset)) {
len = read(connection_in, buf, sizeof(buf));
if (len == 0) {
verbose("Connection closed by %.100s",
ssh_remote_ipaddr(ssh));
connection_closed = 1;
if (compat20)
return;
cleanup_exit(255);
} else if (len < 0) {
if (errno != EINTR && errno != EAGAIN) {
verbose("Read error from remote host "
"%.100s: %.100s",
ssh_remote_ipaddr(ssh), strerror(errno));
cleanup_exit(255);
}
} else {
/* Buffer any received data. */
ssh_packet_process_incoming(ssh, buf, len);
}
}
if (compat20)
return;
/* Read and buffer any available stdout data from the program. */
if (!fdout_eof && FD_ISSET(fdout, readset)) {
len = read(fdout, buf, sizeof(buf));
if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
/* do nothing */
} else if (len <= 0) {
fdout_eof = 1;
} else {
if ((r = sshbuf_put(stdout_buffer, buf, len)) != 0)
fatal("%s: buffer error: %s",
__func__, ssh_err(r));
fdout_bytes += len;
}
}
/* Read and buffer any available stderr data from the program. */
if (!fderr_eof && FD_ISSET(fderr, readset)) {
len = read(fderr, buf, sizeof(buf));
if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
/* do nothing */
} else if (len <= 0) {
fderr_eof = 1;
} else {
if ((r = sshbuf_put(stderr_buffer, buf, len)) != 0)
fatal("%s: buffer error: %s",
__func__, ssh_err(r));
}
}
}
void
packet_process_incoming(const char *buf, u_int len)
{
int r;
if ((r = ssh_packet_process_incoming(active_state, buf, len)) != 0)
sshpkt_fatal(active_state, __func__, r);
}
