source change

backup/filelist.txt

+/etc/dovecot/dovecot.conf
+/etc/cups/
+/etc/transmission-daemon/
+/etc/scanbuttond
+/etc/init.d/scanbuttond
+/etc/init.d/hostapd
+/etc/postfix
+/etc/mysql
+
+service stop dovecot
+service stop cups
+/etc/init.d/scanbuttond stop
+service transmission-daemon stop
+service hostapd stop
+service postfix stop
\ No newline at end of file

src/scanbuttond-0.2.3/AUTHORS

-People behind this project
---------------------------
-
-* Bernhard Stiftner <root84@users.sourceforge.net>
-  (main author, project admin)
-
-* Dirk Wriedt
-  (niash backend)
-
-* J. Javier Maestro
-  (sniffing snapscan buttons)
-
-* Hans Verkuil
-  (plustek backend)
-
-* James Gilliland
-  (Epson CX3200 support/testing)
-
-* "tsuet"
-  (testing)
-
-* Oliver Edelmann
-  (Canon N650U support)
-
-* Christian Bucher
-  (CanoScan LIDE 20 support, helped demystifying the plustek protocol)
-
-* David Froehlich
-  (Epson Perfection 1260 support/testing)
-
-* Milan Zamazal
-  (snapscan testing)

src/scanbuttond-0.2.3/COPYING

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src/scanbuttond-0.2.3/ChangeLog

-0.2.3, released Feb 17, 2006
-----------------------------
-  * fixed snapscan backend (protocol sync)
-  * added mustek and plustek_umax backends
-  * support for some new scanners
-  * Switched to autoconf/automake
-  * Changed directory/file layout
-
-
-0.2.2, released Jun 6, 2005
----------------------------
-  * added snapscan backend
-  * added niash backend
-  * support for scanner initialization script
-  * lots of bugs fixed
-  * command line option support
-  * libusb wrapper moved into own dynamic library
-  * scanbuttond now uses dynamic backend loading
-
-
-0.2.1, released Mar 14, 2005
-----------------------------
-  * added plustek and meta backend
-  * added support for more scanners to the epson backend
-  * SIGSEGV bug fixed, scanner hotplugging seems to work now
-  * using /etc/scanbuttond as config file directory
-
-
-0.2, released Dec 31, 2004
---------------------------
-  * new, modular architecture
-  * support for multiple scanners
-  * several bugfixes
-
-
-0.1, released Oct 17, 2004
---------------------------
-  * first public version

src/scanbuttond-0.2.3/INSTALL

-Basic Installation
-==================
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-==========================
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-Operation Controls
-==================
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-`configure' also accepts some other, not widely useful, options.

src/scanbuttond-0.2.3/Makefile.am

-SUBDIRS = contrib interface backends scripts .
-
-pkgsysconfdir = $(sysconfdir)/$(PACKAGE)
-
-bin_PROGRAMS = scanbuttond
-scanbuttond_SOURCES = scanbuttond.c lib/loader.c include/scanbuttond/backend.h include/scanbuttond/scanbuttond.h include/scanbuttond/common.h
-scanbuttond_LDFLAGS = -ldl
-
-INCLUDES = $(all_includes) -I$(top_builddir)/include -I.

src/scanbuttond-0.2.3/Makefile.in

-# Makefile.in generated by automake 1.9.6 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005  Free Software Foundation, Inc.
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src/scanbuttond-0.2.3/README

-Scanner Button Daemon (scanbuttond), Version 0.2.3
-==================================================
-
-
-First things first
-------------------
-
-This software is in its very early stages of development. Although this daemon
-seems to work for most people, there may still be lots of critical bugs.
-Be prepared for the worst!
-
-
-Introduction
-------------
-
-Modern scanners usually have several front panel buttons which are intended to
-trigger certain actions like copying, faxing or mailing the scanned document.
-This daemon monitors the scanner's buttons and runs a shell script whenever one
-of these buttons has been pressed. Because it is accessing the scanner directly
-via libusb, there should be no conflicts with SANE or other scanner drivers:
-scanbuttond simply won't touch the scanner hardware while you are using SANE.
-
-
-Requirements
-------------
-
- * Scanner: see "supported scanners" below
- * Operating system: Linux (and perhaps other Unix-like systems)
- * Connection: USB (using libusb, the scanner kernel module is currently
-   unsupported)
-
-
-Compilation & Installation
---------------------------
-
-Since version 0.2.3, scanbuttond uses the GNU autotools for compilation &
-installation. Please see the file INSTALL for generic instructions on using
-them.
-
-If you are using a CVS version instead of a release, you may have to bootstrap
-the package. This can be done by running:
-"aclocal; autoconf; autoheader; automake -a; libtoolize". 
-You should now be able to run ./configure and make.
-
-After you have installed scanbuttond, you should run "ldconfig" to update the
-cache of the dynamic linker. If you forget to do that, scanbuttond probably
-won't be able to load the backend modules or resolve the dependencies between
-them!
-
-
-Usage
------
-
-If you just want to try out scanbuttond, type
-> scanbuttond
-
-If everyhing works, scanbuttond will fork() to background. To see what
-scanbuttond is doing, you can have a look at your system log, for example
-/var/log/everything/current (for Gentoo Linux systems running metalog).
-
-To terminate scanbuttond, type
-> killall scanbuttond
-That should do the job. Scanbuttond installs a signal handler which should
-ensure a clean shutdown even when it's killed.
-
-If you intend to use scanbuttond seriously, you would probably want to write a
-distribution-specific init-script for starting and stopping the daemon.
-
-
-Supported scanners
-------------------
-
-Supported by the epson backend (via libusb):
-* Epson Expression 1600 (expected to work)
-* Epson Expression 1680 (expected to work)
-* Epson Perfection 610 (expected to work)
-* Epson Perfection 636U (expected to work)
-* Epson Perfection 640 (expected to work)
-* Epson Perfection 1200U (expected to work)
-* Epson Perfection 1240 (expected to work)
-* Epson Perfection 1640 (expected to work)
-* Epson Perfection 1650 (working, tested)
-* Epson Perfection 1660 (working, tested)
-* Epson Perfection 2400 (working, tested)
-* Epson Perfection 2450 (expected to work)
-* Epson Perfection 3200 (expected to work)
-* Epson CX3200 (working, tested)
-
-Supported by the mustek backend (via libusb):
-* Mustek BearPaw 2448TA (experimental)
-
-Supported by the niash backend (via libusb):
-* Agfa Snapscan Touch (expected to work)
-* HP Scanjet 3300c (expected to work)
-* HP Scanjet 3400c (expected to work)
-* HP Scanjet 4300c (expected to work)
-
-Supported by the plustek backend (via libusb):
-* Canon CanoScan N1220U (expected to work)
-* Canon CanoScan D660U (expected to work)
-* Canon CanoScan N650U (expected to work)
-* Canon CanoScan LiDE 20 (experimental)
-* Canon CanoScan LiDE 25 (experimental)
-* Canon CanoScan LiDE 30 (experimental)
-* Epson Perfection 1260 (experimental)
-* Hewlett-Packard ScanJet 2200c (experimental)
-
-Supported by the plustek_umax backend (via libusb):
-* UMAX Astra 3400/3450 (experimental)
-
-Supported by the snapscan backend (via libusb):
-* Epson Perfection 2480 (expected to work)
-* Epson Perfection 2580 (expected to work)
-* Epson Perfection 1670 (working, tested)
-
-Note: the mustek, niash, plustek, plustek_umax and snapscan backends were
-implemented using information gathered by "sniffing" the communication between
-the Windows driver and the scanner, because there is no technical documentation
-available for these devices! This means that there may be some weird issues
-(e.g. button press events reported twice).
-
-
-How to link actions to buttons
-------------------------------
-
-Whenever a scanner button has been pressed, scanbuttond starts a shell script
-and passes it the button number and the SANE scanner name as command line
-arguments. By default, this shell script is installed as
-"/usr/local/etc/scanbuttond/buttonpressed.sh". Please modify it to fit your
-purposes.
-
-
-Scanner initialization
-----------------------
-
-Note: this only applies to some scanners supported by the non-epson backends.
-All scanners supported by the epson backend do not need special initialization.
-
-Some scanners require a special initialization procedure (firmware uploading,
-for example) before they can be used by scanbuttond. Since the scanbuttond
-backend modules cannot yet handle such operations, the initialization has to be
-performed by external programs, for example by "scanimage" which is part of
-SANE. You can customize the initialization procedure by editing the scanner
-initialization script, which is by default installed at
-"/usr/local/etc/scanbuttond/initscanner.sh". This script will be executed
-whenever a new device has to be initialized. In most cases, it should be
-sufficient to put something like "scanimage -n" into this script.
-
-
-How to contribute to this project
----------------------------------
-
-The development of scanbuttond should not be dependent on one single person, 
-but a community effort.
-You could help by ...
-
- * adding or enhancing a scanner backend
- * adding or enhancing a connection interface
- * doing some extensive testing
- * sending patches
- * sending bug reports
- * mailing ideas how to enhance scanbuttond
- * ...
-
-If you want to help, please send me an email (see below).
-
-
-Contact
--------
-
-Any suggestions, criticism, bug reports/fixes, patches, ... are appreciated.
-Feel free to contact me via email:
-
-Bernhard Stiftner <root84@users.sourceforge.net>
-

src/scanbuttond-0.2.3/backends/Makefile.am

-lib_LTLIBRARIES = 	libscanbtnd-backend_epson.la \
-			libscanbtnd-backend_meta.la \
-			libscanbtnd-backend_mustek.la \
-			libscanbtnd-backend_niash.la \
-			libscanbtnd-backend_plustek.la \
-			libscanbtnd-backend_plustek_umax.la \
-			libscanbtnd-backend_snapscan.la
-
-libscanbtnd_backend_epson_la_SOURCES = epson.c epson.h
-libscanbtnd_backend_epson_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_epson_la_LDFLAGS = -version-info 1:0:0
-libscanbtnd_backend_meta_la_SOURCES = meta.c meta.h ../lib/loader.c ../include/scanbuttond/loader.h ../include/scanbuttond/common.h
-libscanbtnd_backend_meta_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_meta_la_LDFLAGS = -version-info 1:0:0 -ldl
-libscanbtnd_backend_mustek_la_SOURCES = mustek.c mustek.h
-libscanbtnd_backend_mustek_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_mustek_la_LDFLAGS = -version-info 1:0:0
-libscanbtnd_backend_niash_la_SOURCES = niash.c niash.h
-libscanbtnd_backend_niash_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_niash_la_LDFLAGS = -version-info 1:0:0
-libscanbtnd_backend_plustek_la_SOURCES = plustek.c plustek.h
-libscanbtnd_backend_plustek_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_plustek_la_LDFLAGS = -version-info 1:0:0
-libscanbtnd_backend_plustek_umax_la_SOURCES = plustek_umax.c plustek_umax.h
-libscanbtnd_backend_plustek_umax_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_plustek_umax_la_LDFLAGS = -version-info 1:0:0
-libscanbtnd_backend_snapscan_la_SOURCES = snapscan.c snapscan.h
-libscanbtnd_backend_snapscan_la_LIBADD = ../interface/libscanbtnd-interface_usb.la
-libscanbtnd_backend_snapscan_la_LDFLAGS = -version-info 1:0:0
-
-pkgsysconfdir = $(sysconfdir)/$(PACKAGE)
-pkgsysconf_DATA = meta.conf
-
-EXTRA_DIST = $(pkgsysconf_DATA)
-
-INCLUDES = $(all_includes) -I$(top_builddir)/include -I.

src/scanbuttond-0.2.3/backends/Makefile.in

-# Makefile.in generated by automake 1.9.6 from Makefile.am.
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-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
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-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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-install_sh_DATA = $(install_sh) -c -m 644
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-transform = $(program_transform_name)
-NORMAL_INSTALL = :
-PRE_INSTALL = :
-POST_INSTALL = :
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-PRE_UNINSTALL = :
-POST_UNINSTALL = :
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-DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
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-am__aclocal_m4_deps = $(top_srcdir)/configure.in
-am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
-	$(ACLOCAL_M4)
-mkinstalldirs = $(install_sh) -d
-CONFIG_HEADER = $(top_builddir)/include/scanbuttond/config.h
-CONFIG_CLEAN_FILES =
-am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
-am__vpath_adj = case $$p in \
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-libscanbtnd_backend_epson_la_DEPENDENCIES =  \
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-libscanbtnd_backend_meta_la_OBJECTS =  \
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-am_libscanbtnd_backend_mustek_la_OBJECTS = mustek.lo
-libscanbtnd_backend_mustek_la_OBJECTS =  \
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-libscanbtnd_backend_niash_la_DEPENDENCIES =  \
-	../interface/libscanbtnd-interface_usb.la
-am_libscanbtnd_backend_niash_la_OBJECTS = niash.lo
-libscanbtnd_backend_niash_la_OBJECTS =  \
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-libscanbtnd_backend_plustek_la_DEPENDENCIES =  \
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-am_libscanbtnd_backend_plustek_la_OBJECTS = plustek.lo
-libscanbtnd_backend_plustek_la_OBJECTS =  \
-	$(am_libscanbtnd_backend_plustek_la_OBJECTS)
-libscanbtnd_backend_plustek_umax_la_DEPENDENCIES =  \
-	../interface/libscanbtnd-interface_usb.la
-am_libscanbtnd_backend_plustek_umax_la_OBJECTS = plustek_umax.lo
-libscanbtnd_backend_plustek_umax_la_OBJECTS =  \
-	$(am_libscanbtnd_backend_plustek_umax_la_OBJECTS)
-libscanbtnd_backend_snapscan_la_DEPENDENCIES =  \
-	../interface/libscanbtnd-interface_usb.la
-am_libscanbtnd_backend_snapscan_la_OBJECTS = snapscan.lo
-libscanbtnd_backend_snapscan_la_OBJECTS =  \
-	$(am_libscanbtnd_backend_snapscan_la_OBJECTS)
-DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)/include/scanbuttond
-depcomp = $(SHELL) $(top_srcdir)/depcomp
-am__depfiles_maybe = depfiles
-COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
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-	-rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
-mostlyclean: mostlyclean-am
-
-mostlyclean-am: mostlyclean-compile mostlyclean-generic \
-	mostlyclean-libtool
-
-pdf: pdf-am
-
-pdf-am:
-
-ps: ps-am
-
-ps-am:
-
-uninstall-am: uninstall-info-am uninstall-libLTLIBRARIES \
-	uninstall-pkgsysconfDATA
-
-.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
-	clean-libLTLIBRARIES clean-libtool ctags distclean \
-	distclean-compile distclean-generic distclean-libtool \
-	distclean-tags distdir dvi dvi-am html html-am info info-am \
-	install install-am install-data install-data-am install-exec \
-	install-exec-am install-info install-info-am \
-	install-libLTLIBRARIES install-man install-pkgsysconfDATA \
-	install-strip installcheck installcheck-am installdirs \
-	maintainer-clean maintainer-clean-generic mostlyclean \
-	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
-	pdf pdf-am ps ps-am tags uninstall uninstall-am \
-	uninstall-info-am uninstall-libLTLIBRARIES \
-	uninstall-pkgsysconfDATA
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:

src/scanbuttond-0.2.3/backends/epson.c

-// epson.c: Epson ESC/I device backend
-// This file is part of scanbuttond.
-// Copyleft )c( 2004-2006 by Bernhard Stiftner
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// Thanks to:
-//  - James Gilliland (Epson CX3200 support)
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <syslog.h>
-#include "scanbuttond/scanbuttond.h"
-#include "scanbuttond/libusbi.h"
-#include "epson.h"
-
-#define	ESC        	0x1B		/* ASCII value for ESC */
-
-static char* backend_name = "Epson USB";
-
-#define NUM_SUPPORTED_USB_DEVICES 14
-
-static int supported_usb_devices[NUM_SUPPORTED_USB_DEVICES][3] = {
-	// vendor, product, num_buttons
-	{ 0x04B8, 0x0107, 1 },	// Epson Expression 1600
-	{ 0x04B8, 0x010E, 1 },	// Epson Expression 1680
-	{ 0x04B8, 0x0103, 1 },	// Epson Perfection 610
-	{ 0x04B8, 0x0101, 3 },	// Epson Perfection 636U
-	{ 0x04B8, 0x010C, 3 },	// Epson Perfection 640
-	{ 0x04B8, 0x0104, 1 },	// Epson Perfection 1200U
-	{ 0x04B8, 0x010B, 3 },	// Epson Perfection 1240
-	{ 0x04B8, 0x010A, 1 },	// Epson Perfection 1640
-	{ 0x04B8, 0x0110, 4 },	// Epson Perfection 1650
-	{ 0x04B8, 0x011E, 4 },	// Epson Perfection 1660
-	{ 0x04B8, 0x011B, 4 },	// Epson Perfection 2400
-	{ 0x04B8, 0x0112, 1 },	// Epson Perfection 2450
-	{ 0x04B8, 0x011C, 1 },	// Epson Perfection 3200
-	{ 0x04B8, 0x0802, 1 }	// Epson CX3200 (note: is the button number
-				// really correct?)
-};
-
-static char* usb_device_descriptions[NUM_SUPPORTED_USB_DEVICES][2] = {
-	{ "Epson", "Expression 1600"},
-	{ "Epson", "Expression 1680"},
-	{ "Epson", "Perfection 610"},
-	{ "Epson", "Perfection 636U"},
-	{ "Epson", "Perfection 640"},
-	{ "Epson", "Perfection 1200U"},
-	{ "Epson", "Perfection 1240"},
-	{ "Epson", "Perfection 1640"},
-	{ "Epson", "Perfection 1650"},
-	{ "Epson", "Perfection 1660"},
-	{ "Epson", "Perfection 2400"},
-	{ "Epson", "Perfection 2450"},
-	{ "Epson", "Perfection 3200"},
-	{ "Epson", "Stylus CX3200"}
-};
-
-
-libusb_handle_t* libusb_handle;
-scanner_t* epson_scanners = NULL;
-
-
-// returns -1 if the scanner is unsupported, or the index of the
-// corresponding vendor-product pair in the supported_usb_devices array.
-int epson_match_libusb_scanner(libusb_device_t* device)
-{
-	int index;
-	for (index = 0; index < NUM_SUPPORTED_USB_DEVICES; index++) {
-		if (supported_usb_devices[index][0] == device->vendorID &&
-				  supported_usb_devices[index][1] == device->productID) {
-			break;
-		}
-	}
-	if (index >= NUM_SUPPORTED_USB_DEVICES) return -1;
-	return index;
-}
-
-
-void epson_attach_libusb_scanner(libusb_device_t* device)
-{
-	const char* descriptor_prefix = "epson:libusb:";
-	int index = epson_match_libusb_scanner(device);
-	if (index < 0) return; // unsupported
-	scanner_t* scanner = (scanner_t*)malloc(sizeof(scanner_t));
-	scanner->vendor = usb_device_descriptions[index][0];
-	scanner->product = usb_device_descriptions[index][1];
-	scanner->connection = CONNECTION_LIBUSB;
-	scanner->internal_dev_ptr = (void*)device;
-	scanner->lastbutton = 0;
-	scanner->sane_device = (char*)malloc(strlen(device->location) + 
-		strlen(descriptor_prefix) + 1);
-	strcpy(scanner->sane_device, descriptor_prefix);
-	strcat(scanner->sane_device, device->location);
-	scanner->num_buttons = supported_usb_devices[index][2];
-	scanner->is_open = 0;
-	scanner->next = epson_scanners;
-	epson_scanners = scanner;
-}
-
-
-void epson_detach_scanners(void)
-{
-	scanner_t* next;
-	while (epson_scanners != NULL) {
-		next = epson_scanners->next;
-		free(epson_scanners->sane_device);
-		free(epson_scanners);
-		epson_scanners = next;
-	}
-}
-
-
-void epson_scan_devices(libusb_device_t* devices)
-{
-	int index;
-	libusb_device_t* device = devices;
-	while (device != NULL) {
-		index = epson_match_libusb_scanner(device);
-		if (index >= 0)
-			epson_attach_libusb_scanner(device);
-		device = device->next;
-	}
-}
-
-
-int epson_init_libusb(void)
-{
-	libusb_device_t* devices;
-
-	libusb_handle = libusb_init();
-	devices = libusb_get_devices(libusb_handle);
-	epson_scan_devices(devices);
-	return 0;
-}
-
-
-const char* scanbtnd_get_backend_name(void)
-{
-	return backend_name;
-}
-
-
-int scanbtnd_init(void)
-{
-	epson_scanners = NULL;
-
-	syslog(LOG_INFO, "epson-backend: init");
-	return epson_init_libusb();
-}
-
-
-int scanbtnd_rescan(void)
-{
-	libusb_device_t *devices;
-
-	epson_detach_scanners();
-	epson_scanners = NULL;
-	libusb_rescan(libusb_handle);
-	devices = libusb_get_devices(libusb_handle);
-	epson_scan_devices(devices);
-	return 0;
-}
-
-
-const scanner_t* scanbtnd_get_supported_devices(void)
-{
-	return epson_scanners;
-}
-
-
-int scanbtnd_open(scanner_t* scanner)
-{
-	int result = -ENOSYS;
-	if (scanner->is_open)
-		return -EINVAL;
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			// if devices have been added/removed, return -ENODEV to
-			// make scanbuttond update its device list
-			if (libusb_get_changed_device_count() != 0)
-				return -ENODEV;
-			result = libusb_open((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-	if (result == 0)
-		scanner->is_open = 1;
-	return result;
-}
-
-
-int scanbtnd_close(scanner_t* scanner)
-{
-	int result = -ENOSYS;
-	if (!scanner->is_open)
-		return -EINVAL;
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			result = libusb_close((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-	if (result == 0)
-		scanner->is_open = 0;
-	return result;
-}
-
-
-int epson_read(scanner_t* scanner, void* buffer, int bytecount)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			return libusb_read((libusb_device_t*)scanner->internal_dev_ptr, 
-				buffer, bytecount);
-			break;
-	}
-	return -1;
-}
-
-
-int epson_write(scanner_t* scanner, void* buffer, int bytecount)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			return libusb_write((libusb_device_t*)scanner->internal_dev_ptr, 
-				buffer, bytecount);
-			break;
-	}
-	return -1;
-}
-
-
-void epson_flush(scanner_t* scanner)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			libusb_flush((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-}
-
-
-int scanbtnd_get_button(scanner_t* scanner)
-{
-	unsigned char bytes[255];
-	int rcv_len;
-	int num_bytes;
-
-	bytes[0] = ESC;
-	bytes[1] = '!';
-	bytes[2] = '\0';
-
-	if (!scanner->is_open)
-		return -EINVAL;
-
-	num_bytes = epson_write(scanner, (void*)bytes, 2);
-	if (num_bytes != 2) {
-		epson_flush(scanner); 
-		return 0;
-	}
-	num_bytes = epson_read(scanner, (void*)bytes, 4);
-	if (num_bytes != 4) {
-		epson_flush(scanner);
-		return 0;
-	}
-	rcv_len = bytes[3] << 8 | bytes[2];
-	num_bytes = epson_read(scanner, (void*)bytes, rcv_len);
-	if (num_bytes != rcv_len) {
-		epson_flush(scanner);
-		return 0;
-	}
-	return bytes[0];
-}
-
-
-const char* scanbtnd_get_sane_device_descriptor(scanner_t* scanner)
-{
-	return scanner->sane_device;
-}
-
-
-int scanbtnd_exit(void)
-{
-	syslog(LOG_INFO, "epson-backend: exit");
-	epson_detach_scanners();
-	libusb_exit(libusb_handle);
-	return 0;
-}
-

src/scanbuttond-0.2.3/backends/epson.h

-// epson.h: Epson ESC/I device backend
-// This file is part of scanbuttond.
-// Copyleft )c( 2004-2005 by Bernhard Stiftner
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-#ifndef __EPSON_H_INCLUDED
-#define __EPSON_H_INCLUDED
-
-#include "scanbuttond/backend.h"
-
-#endif

src/scanbuttond-0.2.3/backends/meta.c

-// meta.c: meta backend ("dynamic backend loader")
-// This file is part of scanbuttond.
-// Copyleft )c( 2005-2006 by Bernhard Stiftner
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <dlfcn.h>
-#include <errno.h>
-#include "scanbuttond/common.h"
-#include "scanbuttond/scanbuttond.h"
-#include "scanbuttond/libusbi.h"
-#include "meta.h"
-
-#define MAX_CONFIG_LINE 255
-#define MAX_SCANNERS_PER_BACKEND 16
-
-static char* backend_name = "Dynamic Module Loader";
-static char* config_file = STRINGIFY(CFG_DIR) "/meta.conf";
-static char* lib_dir = STRINGIFY(LIB_DIR);
-
-libusb_handle_t* libusb_handle;
-scanner_t* meta_scanners = NULL;
-backend_t* meta_backends = NULL;
-
-
-const char* scanbtnd_get_backend_name(void)
-{
-	return backend_name;
-}
-
-
-void meta_attach_scanner(scanner_t* scanner, backend_t* backend)
-{
-	scanner_t* dev = (scanner_t*)malloc(sizeof(scanner_t));
-	dev->vendor = scanner->vendor;
-	dev->product = scanner->product;
-	dev->connection = scanner->connection;
-	dev->internal_dev_ptr = scanner->internal_dev_ptr;
-	dev->sane_device = scanner->sane_device;
-	dev->meta_info = (void*)backend;
-	dev->lastbutton = scanner->lastbutton;
-	dev->num_buttons = scanner->num_buttons;
-	dev->is_open = scanner->is_open;
-	dev->next = meta_scanners;
-	meta_scanners = dev;
-	syslog(LOG_INFO, "meta-backend: attached scanner \"%s %s\"",
-		   scanner->vendor, scanner->product);
-}
-
-
-void meta_attach_scanners(scanner_t* devices, backend_t* backend)
-{
-	scanner_t* dev = devices;
-	int count = 0;
-	while (dev != NULL) {
-		if (count >= MAX_SCANNERS_PER_BACKEND) {
-			syslog(LOG_WARNING, "meta-backend: refusing to attach scanner \"%s %s\": Too many scanners!",
-				   dev->vendor, dev->product);
-			return;
-		}
-		meta_attach_scanner(dev, backend);
-		dev = dev->next;
-		count++;
-	}
-}
-
-
-void meta_detach_scanner(scanner_t* scanner, scanner_t* prev_scanner)
-{
-	syslog(LOG_INFO, "meta-backend: detaching scanner: \"%s %s\"",
-		   scanner->vendor, scanner->product);
-	if (prev_scanner != NULL)
-		prev_scanner->next = scanner->next;
-	else if (scanner == meta_scanners)
-		meta_scanners = scanner->next;
-	else
-		syslog(LOG_WARNING, "meta-backend: detach scanner: invalid arguments!");
-	free(scanner);
-}
-
-
-void meta_detach_scanners(void)
-{
-	while (meta_scanners != NULL) {
-		meta_detach_scanner(meta_scanners, NULL);
-	}
-}
-
-
-int meta_attach_backend(backend_t* backend)
-{
-  // don't load another meta backend
-	if (strcmp(backend->scanbtnd_get_backend_name(), scanbtnd_get_backend_name())==0) {
-		syslog(LOG_WARNING, "meta-backend: refusing to load another meta backend!");
-		return -1;
-	}
-	syslog(LOG_INFO, "meta-backend: attaching backend: %s",
-		   backend->scanbtnd_get_backend_name());
-	backend->next = meta_backends;
-	meta_backends = backend;
-	backend->scanbtnd_init();
-	return 0;
-}
-
-
-void meta_detach_backend(backend_t* backend, backend_t* prev_backend)
-{
-	if (prev_backend != NULL)
-		prev_backend->next = backend->next;
-	else if (backend == meta_backends)
-		meta_backends = backend->next;
-	else
-		syslog(LOG_WARNING, "meta-backend: detach backend: invalid arguments!");
-	backend->scanbtnd_exit();
-	unload_backend(backend);
-}
-
-
-void meta_detach_backends(void)
-{
-	while (meta_backends != NULL) {
-		meta_detach_backend(meta_backends, NULL);
-	}
-}
-
-
-backend_t* meta_lookup_backend(scanner_t* scanner)
-{
-	return (backend_t*)scanner->meta_info;
-}
-
-
-void meta_strip_newline(char* str)
-{
-	int len = strlen(str);
-	if (len == 0) return;
-	if (str[len-1] != '\n') return;
-	str[len-1] = 0;
-}
-
-
-int scanbtnd_init(void)
-{
-	meta_scanners = NULL;
-	meta_backends = NULL;
-
-	syslog(LOG_INFO, "meta-backend: init");
-	libusb_handle = libusb_init();
-
-	// read config file
-	char lib[MAX_CONFIG_LINE];
-	backend_t* backend;
-	FILE* f = fopen(config_file, "r");
-	if (f == NULL) {
-		syslog(LOG_ERR, "meta-backend: config file \"%s\" not found.",
-			   config_file);
-		return -1;
-	}
-	while (fgets(lib, MAX_CONFIG_LINE, f)) {
-		meta_strip_newline(lib);
-		if (strlen(lib)==0) continue;
-		char* libpath = (char*)malloc(strlen(lib) + strlen(lib_dir) + 2);
-		strcpy(libpath, lib_dir);
-		strcat(libpath, "/");
-		strcat(libpath, lib);
-		backend = load_backend(libpath);
-		free(libpath);
-		if (backend != NULL && meta_attach_backend(backend)==0) {
-			meta_attach_scanners(backend->scanbtnd_get_supported_devices(),
-				backend);
-		}
-	}
-	fclose(f);
-
-	return 0;
-}
-
-
-int scanbtnd_rescan(void)
-{
-	backend_t* backend;
-
-	meta_detach_scanners();
-	meta_scanners = NULL;
-
-	backend = meta_backends;
-	while (backend != NULL) {
-		backend->scanbtnd_rescan();
-		meta_attach_scanners(backend->scanbtnd_get_supported_devices(),
-							 backend);
-		backend = backend->next;
-	}
-
-	return 0;
-}
-
-
-const scanner_t* scanbtnd_get_supported_devices(void)
-{
-	return meta_scanners;
-}
-
-
-int scanbtnd_open(scanner_t* scanner)
-{
-  // if devices have been added/removed, return -ENODEV to
-  // make scanbuttond update its device list
-	if (libusb_get_changed_device_count() != 0) {
-		return -ENODEV;
-	}
-	backend_t* backend = meta_lookup_backend(scanner);
-	if (backend == NULL) return -1;
-	return backend->scanbtnd_open(scanner);
-}
-
-
-int scanbtnd_close(scanner_t* scanner)
-{
-	backend_t* backend = meta_lookup_backend(scanner);
-	if (backend == NULL) return -1;
-	return backend->scanbtnd_close(scanner);
-}
-
-
-int scanbtnd_get_button(scanner_t* scanner)
-{
-	backend_t* backend = meta_lookup_backend(scanner);
-	if (backend == NULL) return 0;
-	return backend->scanbtnd_get_button(scanner);
-}
-
-
-const char* scanbtnd_get_sane_device_descriptor(scanner_t* scanner)
-{
-	backend_t* backend = meta_lookup_backend(scanner);
-	if (backend == NULL) return NULL;
-	return backend->scanbtnd_get_sane_device_descriptor(scanner);
-}
-
-
-int scanbtnd_exit(void)
-{
-	syslog(LOG_INFO, "meta-backend: exit");
-	meta_detach_scanners();
-	meta_detach_backends();
-	libusb_exit(libusb_handle);
-	return 0;
-}
-

src/scanbuttond-0.2.3/backends/meta.conf

-libscanbtnd-backend_epson.so
-libscanbtnd-backend_plustek.so
-libscanbtnd-backend_plustek_umax.so
-libscanbtnd-backend_snapscan.so
-libscanbtnd-backend_niash.so
-libscanbtnd-backend_mustek.so

src/scanbuttond-0.2.3/backends/meta.h

-// meta.h: meta backend ("dynamic backend loader")
-// This file is part of scanbuttond.
-// Copyleft )c( 2005 by Bernhard Stiftner
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-#ifndef __META_H_INCLUDED
-#define __META_H_INCLUDED
-
-#include "scanbuttond/backend.h"
-#include "scanbuttond/loader.h"
-
-#endif

src/scanbuttond-0.2.3/backends/mustek.c

-// mustek.c : scanbuttond backend for mustek/gt68xx devices
-// This file is part of scanbuttond.
-// Copyleft )c( 2006 by Bernhard Stiftner
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <syslog.h>
-#include "scanbuttond/scanbuttond.h"
-#include "scanbuttond/libusbi.h"
-#include "mustek.h"
-
-static char* backend_name = "Mustek USB";
-
-#define NUM_SUPPORTED_USB_DEVICES 1
-
-static int supported_usb_devices[NUM_SUPPORTED_USB_DEVICES][3] = {
-	// vendor, product, num_buttons
-	{ 0x055f, 0x0409, 5 } // Mustek BearPaw 2448TA
-};
-
-static char* usb_device_descriptions[NUM_SUPPORTED_USB_DEVICES][2] = {
-	{ "Mustek", "BearPaw 2448TA"}
-};
-
-
-libusb_handle_t* libusb_handle;
-scanner_t* mustek_scanners = NULL;
-
-
-// returns -1 if the scanner is unsupported, or the index of the
-// corresponding vendor-product pair in the supported_usb_devices array.
-int mustek_match_libusb_scanner(libusb_device_t* device)
-{
-	int index;
-	for (index = 0; index < NUM_SUPPORTED_USB_DEVICES; index++) {
-		if (supported_usb_devices[index][0] == device->vendorID &&
-				  supported_usb_devices[index][1] == device->productID) {
-			break;
-		}
-	}
-	if (index >= NUM_SUPPORTED_USB_DEVICES) return -1;
-	return index;
-}
-
-
-void mustek_attach_libusb_scanner(libusb_device_t* device)
-{
-	const char* descriptor_prefix = "mustek:libusb:";
-	int index = mustek_match_libusb_scanner(device);
-	if (index < 0) return; // unsupported
-	scanner_t* scanner = (scanner_t*)malloc(sizeof(scanner_t));
-	scanner->vendor = usb_device_descriptions[index][0];
-	scanner->product = usb_device_descriptions[index][1];
-	scanner->connection = CONNECTION_LIBUSB;
-	scanner->internal_dev_ptr = (void*)device;
-	scanner->lastbutton = 0;
-	scanner->sane_device = (char*)malloc(strlen(device->location) + 
-		strlen(descriptor_prefix) + 1);
-	strcpy(scanner->sane_device, descriptor_prefix);
-	strcat(scanner->sane_device, device->location);
-	scanner->num_buttons = supported_usb_devices[index][2];
-	scanner->is_open = 0;
-	scanner->next = mustek_scanners;
-	mustek_scanners = scanner;
-}
-
-
-void mustek_detach_scanners(void)
-{
-	scanner_t* next;
-	while (mustek_scanners != NULL) {
-		next = mustek_scanners->next;
-		free(mustek_scanners->sane_device);
-		free(mustek_scanners);
-		mustek_scanners = next;
-	}
-}
-
-
-void mustek_scan_devices(libusb_device_t* devices)
-{
-	int index;
-	libusb_device_t* device = devices;
-	while (device != NULL) {
-		index = mustek_match_libusb_scanner(device);
-		if (index >= 0)
-			mustek_attach_libusb_scanner(device);
-		device = device->next;
-	}
-}
-
-
-int mustek_init_libusb(void)
-{
-	libusb_device_t* devices;
-
-	libusb_handle = libusb_init();
-	devices = libusb_get_devices(libusb_handle);
-	mustek_scan_devices(devices);
-	return 0;
-}
-
-
-const char* scanbtnd_get_backend_name(void)
-{
-	return backend_name;
-}
-
-
-int scanbtnd_init(void)
-{
-	mustek_scanners = NULL;
-
-	syslog(LOG_INFO, "mustek-backend: init");
-	return mustek_init_libusb();
-}
-
-
-int scanbtnd_rescan(void)
-{
-	libusb_device_t *devices;
-
-	mustek_detach_scanners();
-	mustek_scanners = NULL;
-	libusb_rescan(libusb_handle);
-	devices = libusb_get_devices(libusb_handle);
-	mustek_scan_devices(devices);
-	return 0;
-}
-
-
-const scanner_t* scanbtnd_get_supported_devices(void)
-{
-	return mustek_scanners;
-}
-
-
-int scanbtnd_open(scanner_t* scanner)
-{
-	int result = -ENOSYS;
-	if (scanner->is_open)
-		return -EINVAL;
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			// if devices have been added/removed, return -ENODEV to
-			// make scanbuttond update its device list
-			if (libusb_get_changed_device_count() != 0)
-				return -ENODEV;
-			result = libusb_open((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-	if (result == 0)
-		scanner->is_open = 1;
-	return result;
-}
-
-
-int scanbtnd_close(scanner_t* scanner)
-{
-	int result = -ENOSYS;
-	if (!scanner->is_open)
-		return -EINVAL;
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			result = libusb_close((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-	if (result == 0)
-		scanner->is_open = 0;
-	return result;
-}
-
-
-int mustek_read(scanner_t* scanner, void* buffer, int bytecount)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			return libusb_read((libusb_device_t*)scanner->internal_dev_ptr, 
-				buffer, bytecount);
-			break;
-	}
-	return -1;
-}
-
-
-int mustek_write(scanner_t* scanner, void* buffer, int bytecount)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			return libusb_write((libusb_device_t*)scanner->internal_dev_ptr, 
-				buffer, bytecount);
-			break;
-	}
-	return -1;
-}
-
-
-void mustek_flush(scanner_t* scanner)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			libusb_flush((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-}                    
-
- 
-int scanbtnd_get_button(scanner_t* scanner)
-{
-	unsigned char bytes[255];
-	int num_bytes;
-
-	bytes[0] = 0x74; // check function key
-
-	if (!scanner->is_open)
-		return -EINVAL;
-
-	num_bytes = mustek_write(scanner, (void*)bytes, 1);
-	if (num_bytes != 1) {
-		mustek_flush(scanner);
-		return 0;
-	}
-	num_bytes = mustek_read(scanner, (void*)bytes, 4);
-	if (num_bytes != 4) {
-		mustek_flush(scanner);
-		return 0;
-	}
-	switch (bytes[2]) {
-	case 0x10: // scan button
-		return 1;
-	case 0x14: // copy
-		return 2;
-	case 0x12: // fax
-		return 3;
-	case 0x18: // email
-		return 4;
-	case 0x11: // panel
-		return 5;
-	}
-	return 0;
-}
-
-
-const char* scanbtnd_get_sane_device_descriptor(scanner_t* scanner)
-{
-	return scanner->sane_device;
-}
-
-
-int scanbtnd_exit(void)
-{
-	syslog(LOG_INFO, "mustek-backend: exit");
-	mustek_detach_scanners();
-	libusb_exit(libusb_handle);
-	return 0;
-}
-

src/scanbuttond-0.2.3/backends/mustek.h

-// mustek.h : scanbuttond backend for mustek/gt68xx devices
-// This file is part of scanbuttond.
-// Copyleft )c( 2006 by Bernhard Stiftner
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-#ifndef __MUSTEK_H_INCLUDED
-#define __MUSTEK_H_INCLUDED
-
-#include "scanbuttond/backend.h"
-
-#endif

src/scanbuttond-0.2.3/backends/niash.c

-// niash.c: Niash device backend
-// This file is part of scanbuttond.
-// Copyleft )c( 2005 by Bernhard Stiftner
-// Copyleft )c( 2005 by Dirk Wriedt
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program 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.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <syslog.h>
-#include "scanbuttond/scanbuttond.h"
-#include "scanbuttond/libusbi.h"
-#include "niash.h"
-
-static char* backend_name = "Niash USB";
-
-#define NUM_SUPPORTED_USB_DEVICES 4
-
-static int supported_usb_devices[NUM_SUPPORTED_USB_DEVICES][3] = {
-	// vendor, product, num_buttons
-	{ 0x06bd, 0x0100, 4 },	// Agfa Snapscan Touch
-	{ 0x03f0, 0x0205, 2 },	// HP Scanjet 3300c
-	{ 0x03f0, 0x0405, 3 },	// HP Scanjet 3400c
-	{ 0x03f0, 0x0305, 3 }	// HP Scanjet 4300c
-};
-
-// TODO: check if this backend really works on the Epson 2580 too...
-static char* usb_device_descriptions[NUM_SUPPORTED_USB_DEVICES][2] = {
-	{ "Agfa", "Snapscan Touch" },
-	{ "Hewlett-Packard", "Scanjet 3300c" },
-	{ "Hewlett-Packard", "Scanjet 3400c" },
-	{ "Hewlett-Packard", "Scanjet 4300c" }
-};
-
-
-libusb_handle_t* libusb_handle;
-scanner_t* niash_scanners = NULL;
-
-
-// returns -1 if the scanner is unsupported, or the index of the
-// corresponding vendor-product pair in the supported_usb_devices array.
-int niash_match_libusb_scanner(libusb_device_t* device)
-{
-	int index;
-	for (index = 0; index < NUM_SUPPORTED_USB_DEVICES; index++) {
-		if (supported_usb_devices[index][0] == device->vendorID &&
-				  supported_usb_devices[index][1] == device->productID) {
-			break;
-		}
-	}
-	if (index >= NUM_SUPPORTED_USB_DEVICES) return -1;
-	return index;
-}
-
-
-// TODO: check if the descriptor matches the SANE device name!
-void niash_attach_libusb_scanner(libusb_device_t* device)
-{
-	const char* descriptor_prefix = "niash:libusb:";
-	int index = niash_match_libusb_scanner(device);
-	if (index < 0) return; // unsupported
-	scanner_t* scanner = (scanner_t*)malloc(sizeof(scanner_t));
-	scanner->vendor = usb_device_descriptions[index][0];
-	scanner->product = usb_device_descriptions[index][1];
-	scanner->connection = CONNECTION_LIBUSB;
-	scanner->internal_dev_ptr = (void*)device;
-	scanner->lastbutton = 0;
-	scanner->sane_device = (char*)malloc(strlen(device->location) + 
-		strlen(descriptor_prefix) + 1);
-	strcpy(scanner->sane_device, descriptor_prefix);
-	strcat(scanner->sane_device, device->location);
-	scanner->num_buttons = supported_usb_devices[index][2];
-	scanner->is_open = 0;
-	scanner->next = niash_scanners;
-	niash_scanners = scanner;
-}
-
-
-void niash_detach_scanners(void)
-{
-	scanner_t* next;
-	while (niash_scanners != NULL) {
-		next = niash_scanners->next;
-		free(niash_scanners->sane_device);
-		free(niash_scanners);
-		niash_scanners = next;
-	}
-}
-
-
-void niash_scan_devices(libusb_device_t* devices)
-{
-	int index;
-	libusb_device_t* device = devices;
-	while (device != NULL) {
-		index = niash_match_libusb_scanner(device);
-		if (index >= 0) 
-			niash_attach_libusb_scanner(device);
-		device = device->next;
-	}
-}
-
-
-int niash_init_libusb(void)
-{
-	libusb_device_t* devices;
-
-	libusb_handle = libusb_init();
-	devices = libusb_get_devices(libusb_handle);
-	niash_scan_devices(devices);
-	return 0;
-}
-
-
-const char* scanbtnd_get_backend_name(void)
-{
-	return backend_name;
-}
-
-
-int scanbtnd_init(void)
-{
-	niash_scanners = NULL;
-
-	syslog(LOG_INFO, "niash-backend: init");
-	return niash_init_libusb();
-}
-
-
-int scanbtnd_rescan(void)
-{
-	libusb_device_t* devices;
-
-	niash_detach_scanners();
-	niash_scanners = NULL;
-	libusb_rescan(libusb_handle);
-	devices = libusb_get_devices(libusb_handle);
-	niash_scan_devices(devices);
-	return 0;
-}
-
-
-const scanner_t* scanbtnd_get_supported_devices(void)
-{
-	return niash_scanners;
-}
-
-
-int scanbtnd_open(scanner_t* scanner)
-{
-	int result = -ENOSYS;
-	if (scanner->is_open)
-		return -EINVAL;
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			// if devices have been added/removed, return -ENODEV to
-			// make scanbuttond update its device list
-			if (libusb_get_changed_device_count() != 0)
-				return -ENODEV;
-			result = libusb_open((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-	if (result == 0)
-		scanner->is_open = 1;
-	return result;
-}
-
-
-int scanbtnd_close(scanner_t* scanner)
-{
-	int result = -ENOSYS;
-	if (!scanner->is_open)
-		return -EINVAL;
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			result = libusb_close((libusb_device_t*)scanner->internal_dev_ptr);
-			break;
-	}
-	if (result == 0)
-		scanner->is_open = 0;
-	return result;
-}
-
-
-int niash_control_msg(scanner_t* scanner, int requesttype, int request,
-					  int value, int index, void* buffer, int bytecount)
-{
-	switch (scanner->connection) {
-		case CONNECTION_LIBUSB:
-			return libusb_control_msg((libusb_device_t*)scanner->internal_dev_ptr,
-									   requesttype, request, value, index, buffer,
-									   bytecount);
-			break;
-	}
-	return -1;
-}
-
-
-int scanbtnd_get_button(scanner_t* scanner)
-{
-	unsigned char bytes[255];
-	int value[255];
-	int requesttype[255];
-	int num_bytes;
-	int button;
-	int i;
-
-	if (!scanner->is_open)
-		return -EINVAL;
-
-	/*
-	The button status seems to be held in Register 0x2e of the
-	scanner's USB - IEEE1284 bridge
-	I checked the usb sniffer logs against hp3300c_xfer.h (hp3300 sane backend)
-	and learned that the requests being submitted by the windows driver for
-	my Agfa Snapscan Touch seem to follow this schema:
-
-	request value                data   datasize
-	0x40    SPP_CONTROL   (0x87) 0x14        1
-	0x40    EPP_ADDR      (0x83) 0x2e        1
-	0x40    SPP_CONTROL   (0x87) 0x34        1
-	0xc0    EPP_DATA_READ (0x84) returned    1
-	0x40    SPP_CONTROL   (0x87) 0x14        1
-
-	The register can be read by setting the address with an EPP_ADDR call,
-	then issuing an EPP_DATA_READ call.
-	I don't know what the last request is for.
-	*/
-
-	requesttype[0]=0x40; bytes[0] = 0x14; value[0]=0x87; /* SPP_CONTROL */
-	requesttype[1]=0x40; bytes[1] = 0x2e; value[1]=0x83; /* EPP_ADDR */
-	requesttype[2]=0x40; bytes[2] = 0x34; value[2]=0x87; /* SPP_CONTROL */
-	requesttype[3]=0xc0; bytes[3] = 0xff; value[3]=0x84; /* EPP_DATA_READ */
-	requesttype[4]=0x40; bytes[4] = 0x14; value[4]=0x87; /* SPP_CONTROL */
-	for(i=0;i<5;i++) {
-		num_bytes=niash_control_msg(scanner, requesttype[i], 0x0c, value[i], 0, (void*)&bytes + i, 0x01);
-		if (num_bytes < 0 ) return 0;
-	}
-	switch (bytes[3]) {
-		case 0x02: button = 1; break;
-		case 0x04: button = 2; break;
-		case 0x08: button = 3; break;
-		case 0x10: button = 4; break;
-		default: button = 0; break;
-	};
-
-	return button;
-}
-
-
-const char* scanbtnd_get_sane_device_descriptor(scanner_t* scanner)
-{
-	return scanner->sane_device;
-}
-
-
-int scanbtnd_exit(void)
-{
-	syslog(LOG_INFO, "niash-backend: exit");
-	niash_detach_scanners();
-	libusb_exit(libusb_handle);
-	return 0;
-}
-