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/*
* SANE backend for
* Samsung SCX-4500W
*
* Network Scanners Support
* Copyright 2010 Alexander Kuznetsov <acca(at)cpan.org>
*
* This program is licensed under GPL + SANE exception.
* More info at http://www.sane-project.org/license.html
*
*/
#undef BACKEND_NAME
#define BACKEND_NAME xerox_mfp
#define DEBUG_DECLARE_ONLY
#define DEBUG_NOT_STATIC
#include "sane/config.h"
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include "sane/saneopts.h"
#include "sane/sanei_scsi.h"
#include "sane/sanei_usb.h"
#include "sane/sanei_pio.h"
#include "sane/sanei_tcp.h"
#include "sane/sanei_udp.h"
#include "sane/sanei_backend.h"
#include "sane/sanei_config.h"
#include "xerox_mfp.h"
#define RECV_TIMEOUT 1 /* seconds */
extern int sanei_debug_xerox_mfp;
int tcp_dev_request(struct device *dev,
SANE_Byte *cmd, size_t cmdlen,
SANE_Byte *resp, size_t *resplen)
{
size_t bytes_recv = 0;
ssize_t rc = 1;
size_t len;
/* Send request, if any */
if (cmd && cmdlen) {
len = (size_t)sanei_tcp_write(dev->dn, cmd, cmdlen);
if (len != cmdlen) {
DBG(1, "%s: sent only %lu bytes of %lu\n",
__func__, (u_long)len, (u_long)cmdlen);
return SANE_STATUS_IO_ERROR;
}
}
/* Receive response, if expected */
if (resp && resplen) {
DBG(3, "%s: wait for %i bytes\n", __func__, (int)*resplen);
while (bytes_recv < *resplen && rc > 0) {
rc = recv(dev->dn, resp+bytes_recv, *resplen-bytes_recv, 0);
if (rc > 0) bytes_recv += rc;
else {
DBG(1, "%s: error %s, bytes requested: %i, bytes read: %i\n",
__func__, strerror(errno), (int)*resplen, (int)bytes_recv);
*resplen = bytes_recv;
/*
TODO:
do something smarter than that!
*/
return SANE_STATUS_GOOD;
return SANE_STATUS_IO_ERROR;
}
}
}
*resplen = bytes_recv;
return SANE_STATUS_GOOD;
}
SANE_Status tcp_dev_open(struct device *dev)
{
SANE_Status status;
char *strhost;
char *strport;
int port;
struct servent *sp;
struct timeval tv;
SANE_String_Const devname;
devname = dev->sane.name;
DBG(3, "%s: open %s\n", __func__, devname);
if (strncmp(devname, "tcp", 3) != 0) return SANE_STATUS_INVAL;
devname += 3;
devname = sanei_config_skip_whitespace(devname);
if (!*devname) return SANE_STATUS_INVAL;
devname = sanei_config_get_string(devname, &strhost);
devname = sanei_config_skip_whitespace(devname);
if (*devname)
devname = sanei_config_get_string(devname, &strport);
else
strport = "9400";
if (isdigit(*strport)) {
port = atoi(strport);
} else {
if ((sp = getservbyname(strport, "tcp"))) {
port = ntohs(sp->s_port);
} else {
DBG(1, "%s: unknown TCP service %s\n", __func__, strport);
return SANE_STATUS_IO_ERROR;
}
}
status = sanei_tcp_open(strhost, port, &dev->dn);
if (status == SANE_STATUS_GOOD) {
tv.tv_sec = RECV_TIMEOUT;
tv.tv_usec = 0;
if (setsockopt(dev->dn, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof tv) < 0) {
DBG(1, "%s: setsockopts %s", __func__, strerror(errno));
}
}
return status;
}
void
tcp_dev_close(struct device *dev)
{
if (!dev) return;
DBG(3, "%s: closing dev %p\n", __func__, (void *)dev);
/* finish all operations */
if (dev->scanning) {
dev->cancel = 1;
/* flush READ_IMAGE data */
if (dev->reading) sane_read(dev, NULL, 1, NULL);
/* send cancel if not sent before */
if (dev->state != SANE_STATUS_CANCELLED)
ret_cancel(dev, 0);
}
sanei_tcp_close(dev->dn);
dev->dn = -1;
}
SANE_Status
tcp_configure_device(const char *devname, SANE_Status(*list_one)(SANE_String_Const devname))
{
/*
TODO: LAN scanners multicast discovery.
devname would contain "tcp auto"
We find new devnames and feed them to
`list_one_device' one by one
*/
return list_one(devname);
}
/* xerox_mfp-tcp.c */
|
