/*
* Processes input from the client and the program. Input data is stored
* in buffers and processed later.
*/
static void
process_input(fd_set *readset)
{
int len;
char buf[16384];
/* Read and buffer any input data from the client. */
if (FD_ISSET(connection_in, readset)) {
int cont = 0;
len = roaming_read(connection_in, buf, sizeof(buf), &cont);
if (len == 0) {
if (cont)
return;
verbose("Connection closed by %.100s",
get_remote_ipaddr());
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",
get_remote_ipaddr(), strerror(errno));
cleanup_exit(255);
}
} else {
/* Buffer any received data. */
packet_process_incoming(buf, len);
fdout_bytes += 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 {
buffer_append(&stdout_buffer, buf, len);
debug ("FD out now: %ld", fdout_bytes);
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 {
buffer_append(&stderr_buffer, buf, len);
}
}
}
static void
client_process_net_input(fd_set * readset)
{
int len;
char buf[8192];
/*
* Read input from the server, and add any such data to the buffer of
* the packet subsystem.
*/
if (FD_ISSET(connection_in, readset)) {
/* Read as much as possible. */
len = read(connection_in, buf, sizeof(buf));
if (len == 0) {
/* Received EOF. The remote host has closed the connection. */
snprintf(buf, sizeof buf, "Connection to %.300s closed by remote host.\r\n",
host);
buffer_append(&stderr_buffer, buf, strlen(buf));
quit_pending = 1;
return;
}
/*
* There is a kernel bug on Solaris that causes select to
* sometimes wake up even though there is no data available.
*/
if (len < 0 && (errno == EAGAIN || errno == EINTR))
len = 0;
if (len < 0) {
/* An error has encountered. Perhaps there is a network problem. */
snprintf(buf, sizeof buf, "Read from remote host %.300s: %.100s\r\n",
host, strerror(errno));
buffer_append(&stderr_buffer, buf, strlen(buf));
quit_pending = 1;
return;
}
packet_process_incoming(buf, len);
}
}
/*
* Processes input from the client and the program. Input data is stored
* in buffers and processed later.
*/
static void
process_input(fd_set *readset)
{
int len;
char buf[16384];
/* Read and buffer any input data from the client. */
if (FD_ISSET(connection_in, readset)) {
int cont = 0;
len = roaming_read(connection_in, buf, sizeof(buf), &cont);
if (len == 0) {
if (cont)
return;
verbose("Connection closed by %.100s",
get_remote_ipaddr());
connection_closed = 1;
if (compat20)
return;
cleanup_exit(255);
} else if (len < 0) {
if (errno != EINTR && errno != EAGAIN &&
errno != EWOULDBLOCK) {
verbose("Read error from remote host "
"%.100s: %.100s",
get_remote_ipaddr(), strerror(errno));
cleanup_exit(255);
}
} else {
/* Buffer any received data. */
packet_process_incoming(buf, len);
}
}
if (compat20)
return;
/* Read and buffer any available stdout data from the program. */
if (!fdout_eof && FD_ISSET(fdout, readset)) {
errno = 0;
len = read(fdout, buf, sizeof(buf));
if (len < 0 && (errno == EINTR || ((errno == EAGAIN ||
errno == EWOULDBLOCK) && !child_terminated))) {
/* do nothing */
#ifndef PTY_ZEROREAD
} else if (len <= 0) {
#else
} else if ((!isatty(fdout) && len <= 0) ||
(isatty(fdout) && (len < 0 || (len == 0 && errno != 0)))) {
#endif
fdout_eof = 1;
} else {
buffer_append(&stdout_buffer, buf, len);
fdout_bytes += len;
}
}
/* Read and buffer any available stderr data from the program. */
if (!fderr_eof && FD_ISSET(fderr, readset)) {
errno = 0;
len = read(fderr, buf, sizeof(buf));
if (len < 0 && (errno == EINTR || ((errno == EAGAIN ||
errno == EWOULDBLOCK) && !child_terminated))) {
/* do nothing */
#ifndef PTY_ZEROREAD
} else if (len <= 0) {
#else
} else if ((!isatty(fderr) && len <= 0) ||
(isatty(fderr) && (len < 0 || (len == 0 && errno != 0)))) {
#endif
fderr_eof = 1;
} else {
buffer_append(&stderr_buffer, buf, len);
}
}
}