[sane-devel] sanei_tcp

[Alessandro Zummo]

 Hi,

  this patch adds support for sanei_tcp, a TCP
 based interface. 

 include/sane/sanei_tcp.h |   33 ++++++++++++++++++++
 sanei/Makefile.in        |    7 ++--
 sanei/sanei_tcp.c        |   74 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 111 insertions(+), 3 deletions(-)

--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ sane-backends/include/sane/sanei_tcp.h	2006-02-23 20:32:41.000000000 +0100
@@ -0,0 +1,33 @@
+/* sane - Scanner Access Now Easy.
+   Copyright (c) 2006 Tower Technologies
+   This file is part of the SANE package.
+
+   This file is in the public domain.  You may use and modify it as
+   you see fit, as long as this copyright message is included and
+   that there is an indication as to what modifications have been
+   made (if any).
+
+   SANE is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+   FITNESS FOR A PARTICULAR PURPOSE.
+
+   This file declares SANE application interface.  See the SANE
+   standard for a detailed explanation of the interface.
+*/
+
+#ifndef sanei_tcp_h
+#define sanei_tcp_h
+
+#include <sane/sane.h>
+#include <sane/sanei_wire.h>
+
+#include <netinet/in.h>
+#include <netdb.h>
+
+extern SANE_Status sanei_tcp_open(const char *host, int port, int *fdp);
+extern void sanei_tcp_close(int fd);
+extern ssize_t sanei_tcp_write(int fd, const u_char *buf, int count);
+extern ssize_t sanei_tcp_read(int fd, u_char *buf, int count);
+
+
+#endif /* sanei_tcp_h */
--- sane-backends.orig/sanei/Makefile.in	2006-02-23 20:22:58.000000000 +0100
+++ sane-backends/sanei/Makefile.in	2006-02-23 20:23:13.000000000 +0100
@@ -51,13 +51,14 @@ LIBSANEI_OBJS = sanei_ab306.o sanei_cons
 	sanei_net.o sanei_wire.o sanei_codec_ascii.o sanei_codec_bin.o \
 	sanei_scsi.o sanei_config.o sanei_config2.o sanei_pio.o sanei_pa4s2.o \
 	sanei_auth.o sanei_usb.o sanei_thread.o sanei_pv8630.o sanei_pp.o \
-	sanei_lm983x.o sanei_access.o @SANEI_JPEG@
+	sanei_lm983x.o sanei_access.o sanei_tcp.o @SANEI_JPEG@
 
 LIBSANEI_LTOBJS = sanei_ab306.lo sanei_constrain_value.lo sanei_init_debug.lo \
 	sanei_net.lo sanei_wire.lo sanei_codec_ascii.lo sanei_codec_bin.lo \
 	sanei_scsi.lo sanei_config.lo sanei_config2.lo sanei_pio.lo \
 	sanei_pa4s2.lo sanei_auth.lo sanei_usb.lo sanei_thread.lo \
-	sanei_pv8630.lo sanei_lm983x.lo sanei_pp.lo sanei_access.lo @SANEI_JPEG_LO@
+	sanei_pv8630.lo sanei_lm983x.lo sanei_pp.lo sanei_access.lo @SANEI_JPEG_LO@ \
+	sanei_tcp.lo
 
 TARGETS = libsanei.a $(LIBSANEI_LTOBJS)
 TESTPROGRAMS = test_wire
@@ -68,7 +69,7 @@ DISTFILES = Makefile.in linux_sg3_err.h 
   sanei_constrain_value.c sanei_init_debug.c sanei_jpeg.c \
   sanei_net.c sanei_pa4s2.c sanei_pio.c sanei_pv8630.c sanei_lm983x.c \
   sanei_scsi.c sanei_thread.c sanei_usb.c sanei_pp.c \
-  sanei_wire.c test_wire.c sanei_access.c
+  sanei_wire.c test_wire.c sanei_access.c sanei_tcp.c
 
 .PHONY: all check clean depend dist distclean install uninstall
 
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ sane-backends/sanei/sanei_tcp.c	2006-02-23 20:23:27.000000000 +0100
@@ -0,0 +1,74 @@
+/* sane - Scanner Access Now Easy.
+   Copyright (c) 2006 Tower Technologies
+   Author: Alessandro Zummo <a.zummo at towertech.it>
+   This file is part of the SANE package.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License,
+   version 2, published by the Free Software Foundation.
+*/
+
+#include "../include/sane/config.h"
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define BACKEND_NAME sanei_tcp
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei_debug.h"
+#include "../include/sane/sanei_tcp.h"
+
+SANE_Status
+sanei_tcp_open(const char *host, int port, int *fdp)
+{
+	int fd, err;
+	struct sockaddr_in saddr;
+	struct hostent *h;
+
+	DBG_INIT();
+	DBG(1, "%s: host = %s, port = %d\n", __FUNCTION__, host, port);
+
+	h = gethostbyname(host);
+
+	if (h == NULL || h->h_addr_list[0] == NULL || h->h_addrtype != AF_INET)
+		return SANE_STATUS_INVAL;
+
+	if ((fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
+		return SANE_STATUS_INVAL;
+
+	memset(&saddr, 0x00, sizeof(struct sockaddr_in));
+
+	saddr.sin_family = AF_INET;
+	saddr.sin_port = htons(port);
+	memcpy(&saddr.sin_addr, h->h_addr_list[0], h->h_length);
+
+	if ((err = connect(fd, (struct sockaddr *) &saddr, sizeof(struct sockaddr_in))) != 0) {
+		close(fd);
+		return SANE_STATUS_INVAL;
+	}
+
+	*fdp = fd;
+
+	return SANE_STATUS_GOOD;
+}
+
+void
+sanei_tcp_close(int fd)
+{
+	close(fd);
+}
+
+ssize_t
+sanei_tcp_write(int fd, const u_char *buf, int count)
+{
+	return send(fd, buf, count, 0);
+}
+
+ssize_t
+sanei_tcp_read(int fd, u_char *buf, int count)
+{
+	return recv(fd, buf, count, 0);
+}


-- 

 Best regards,

 Alessandro Zummo,
  Tower Technologies - Turin, Italy

  http://www.towertech.it