patched source

src/scanbuttond-0.2.3/interface/Makefile.in

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+# 2003, 2004, 2005  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
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src/scanbuttond-0.2.3/interface/libusbi.c

+// libusbi.h: libusb wrapper
+// 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.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <usb.h>
+#include <syslog.h>
+#include "scanbuttond/libusbi.h"
+
+#define TIMEOUT	   	10 * 1000	/* 10 seconds */
+
+int invocation_count = 0;
+
+
+libusb_handle_t* libusb_init(void)
+{
+	libusb_handle_t* handle;
+	invocation_count++;
+	if (invocation_count == 1) {
+		syslog(LOG_INFO, "libusbi: initializing...");
+		usb_init();
+	}
+	handle = (libusb_handle_t*)malloc(sizeof(libusb_handle_t));
+	handle->devices = NULL;
+	libusb_rescan(handle);
+	return handle;
+}
+
+
+int libusb_search_interface(struct usb_device* device)
+{
+	int found = 0;
+	int interface;
+	for (interface = 0; interface < device->config[0].bNumInterfaces && !found; interface++) {
+		switch (device->descriptor.bDeviceClass) {
+			case USB_CLASS_VENDOR_SPEC:
+				found = 1;
+				break;
+			case USB_CLASS_PER_INTERFACE:
+				switch (device->config[0].interface[interface].altsetting[0].bInterfaceClass) {
+					case USB_CLASS_VENDOR_SPEC:
+					case USB_CLASS_PER_INTERFACE:
+						case 16: /* data? */
+							found = 1;
+							break;
+				}
+				break;
+		}
+	}
+	interface--;
+	if (!found) return -1;
+	return interface;
+}
+
+
+int libusb_search_in_endpoint(struct usb_device* device)
+{
+	int usb_in_ep = 0;
+	int usb_out_ep = 0;
+	struct usb_interface_descriptor *interface;
+	interface = &device->config[0].interface->altsetting[0];
+
+	int num;
+	for (num = 0; num < interface->bNumEndpoints; num++) {
+		struct usb_endpoint_descriptor *endpoint;
+		int address, direction, transfer_type;
+
+		endpoint = &interface->endpoint[num];
+		address = endpoint->bEndpointAddress & USB_ENDPOINT_ADDRESS_MASK;
+		direction = endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
+		transfer_type = endpoint->bmAttributes & USB_ENDPOINT_TYPE_MASK;
+
+		if (transfer_type == USB_ENDPOINT_TYPE_BULK) {
+			if (direction) {	/* in */
+				if (!usb_in_ep)
+					usb_in_ep = endpoint->bEndpointAddress;
+			} else {	/* out */
+				if (!usb_out_ep)
+					usb_out_ep = endpoint->bEndpointAddress;
+			}
+		}
+	}
+	return usb_in_ep;
+}
+
+
+int libusb_search_out_endpoint(struct usb_device* device)
+{
+	int usb_in_ep = 0;
+	int usb_out_ep = 0;
+	struct usb_interface_descriptor *interface;
+	interface = &device->config[0].interface->altsetting[0];
+
+	int num;
+	for (num = 0; num < interface->bNumEndpoints; num++) {
+		struct usb_endpoint_descriptor *endpoint;
+		int address, direction, transfer_type;
+
+		endpoint = &interface->endpoint[num];
+		address = endpoint->bEndpointAddress & USB_ENDPOINT_ADDRESS_MASK;
+		direction = endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
+		transfer_type = endpoint->bmAttributes & USB_ENDPOINT_TYPE_MASK;
+
+		if (transfer_type == USB_ENDPOINT_TYPE_BULK) {
+			if (direction) {	/* in */
+				if (!usb_in_ep)
+					usb_in_ep = endpoint->bEndpointAddress;
+			} else {	/* out */
+				if (!usb_out_ep)
+					usb_out_ep = endpoint->bEndpointAddress;
+			}
+		}
+	}
+	return usb_out_ep;
+}
+
+
+void libusb_attach_device(struct usb_device* device, libusb_handle_t* handle)
+{
+	libusb_device_t* libusb_device = (libusb_device_t*)malloc(sizeof(libusb_device_t));
+	libusb_device->vendorID = device->descriptor.idVendor;
+	libusb_device->productID = device->descriptor.idProduct;
+
+	// the location string consists of bus number, followed by a colon (":"), and the device number
+	libusb_device->location = (char*)malloc(strlen(device->bus->dirname) + strlen(device->filename) + 2);
+	strcpy(libusb_device->location, device->bus->dirname);
+	strcat(libusb_device->location, ":");
+	strcat(libusb_device->location, device->filename);
+
+	libusb_device->device = device;
+	libusb_device->handle = NULL;
+	libusb_device->interface = libusb_search_interface(device);
+	if (libusb_device->interface < 0) {
+		free(libusb_device->location);
+		free(libusb_device);
+		return;
+	}
+	libusb_device->out_endpoint = libusb_search_out_endpoint(device);
+	if (libusb_device->out_endpoint < 0) {
+		free(libusb_device->location);
+		free(libusb_device);
+		return;
+	}
+	libusb_device->in_endpoint = libusb_search_in_endpoint(device);
+	if (libusb_device->in_endpoint < 0) {
+		free(libusb_device->location);
+		free(libusb_device);
+		return;
+	}
+	libusb_device->next = handle->devices;
+	handle->devices = libusb_device;
+}
+
+
+void libusb_detach_devices(libusb_handle_t* handle)
+{
+	libusb_device_t* next;
+	while (handle->devices != NULL) {
+		next = handle->devices->next;
+		free(handle->devices->location);
+		free(handle->devices);
+		handle->devices = next;
+	}
+}
+
+
+void libusb_rescan(libusb_handle_t* handle)
+{
+	struct usb_bus *bus;
+	struct usb_device *device;
+
+	libusb_detach_devices(handle);
+
+	usb_find_busses();
+	usb_find_devices();
+	handle->devices = NULL;
+
+	bus = usb_busses;
+	while (bus != NULL) {
+		device = bus->devices;
+		while (device != NULL) {
+			libusb_attach_device(device, handle);
+			device = device->next;
+		}
+		bus = bus->next;
+	}
+
+}
+
+
+int libusb_get_changed_device_count(void)
+{
+	usb_find_busses();
+	return usb_find_devices();
+}
+
+
+libusb_device_t* libusb_get_devices(libusb_handle_t* handle)
+{
+	return handle->devices;
+}
+
+
+int libusb_open(libusb_device_t* device)
+{
+	int result;
+
+	if (!device || !device->device)
+		return -ENODEV;
+
+	device->handle = usb_open(device->device);
+	if (device->handle == NULL) {
+		syslog(LOG_ERR, "libusbi: could not open device %s", device->location);
+		return -ENODEV;
+	}
+
+	// Calling usb_set_configuration should not be necessary.
+	// It is even considered harmful, since it may disturb other processes
+	// which are currently communicating with the scanner!
+	//
+	// usb_set_configuration(device->handle,
+	//     usb_device(device->handle)->config[0].bConfigurationValue);
+
+	result = usb_claim_interface(device->handle, device->interface);
+	switch (result) {
+		case 0:
+			return 0;
+		case -ENOMEM:
+			syslog(LOG_ERR, "libusbi: could not claim interface for device %s. (ENOMEM)",
+				   device->location);
+			usb_close(device->handle);
+			return -ENODEV;
+		case -EBUSY:
+			syslog(LOG_ERR, "libusbi: could not claim interface for device %s. (EBUSY)",
+				   device->location);
+			usb_close(device->handle);
+			return -EBUSY;
+		default:
+			syslog(LOG_ERR, "libusbi: could not claim interface for device %s. (code=%d)",
+				   device->location, result);
+			usb_close(device->handle);
+			return -ENODEV;
+	}
+}
+
+
+int libusb_close(libusb_device_t* device)
+{
+	int result;
+	result = usb_release_interface(device->handle, device->interface);
+	if (result < 0) {
+		syslog(LOG_ERR, "libusbi: could not release interface, error code=%d, device=%s",
+			   result, device->location);
+		return result;
+	}
+	result = usb_close(device->handle);
+	if (result < 0) {
+		syslog(LOG_ERR, "libusbi: could not close usb device, error code=%d, device=%s",
+			   result, device->location);
+		return result;
+	}
+	return 0;
+}
+
+
+int libusb_read(libusb_device_t* device, void* buffer, int bytecount)
+{
+	int num_bytes = usb_bulk_read(device->handle, device->in_endpoint,
+								  buffer, bytecount, TIMEOUT);
+	if (num_bytes<0) {
+		usb_clear_halt(device->handle, device->in_endpoint);
+		return 0;
+	}
+	return num_bytes;
+}
+
+
+int libusb_write(libusb_device_t* device, void* buffer, int bytecount)
+{
+	int num_bytes = usb_bulk_write(device->handle, device->out_endpoint,
+								   buffer, bytecount, TIMEOUT);
+	if (num_bytes<0) {
+		usb_clear_halt(device->handle, device->in_endpoint);
+		return 0;
+	}
+	return num_bytes;
+}
+
+
+void libusb_flush(libusb_device_t* device)
+{
+	char buffer[16];
+	while (usb_bulk_read(device->handle, device->in_endpoint, buffer, 16, 500) > 0) {};
+}
+
+
+int libusb_control_msg(libusb_device_t* device, int requesttype, int request,
+					   int value, int index, void* bytes, int size)
+{
+	int num_bytes = usb_control_msg(device->handle, requesttype, request, value,
+									index, bytes, size, TIMEOUT);
+	if (num_bytes<0) {
+		// Doesn't seem to be needed... (bs, Jun 07 2005)
+		// usb_clear_halt(device->handle, device->in_endpoint);
+		return 0;
+	}
+	return num_bytes;
+}
+
+
+void libusb_exit(libusb_handle_t* handle)
+{
+	invocation_count--;
+	if (invocation_count == 0)
+		syslog(LOG_INFO, "libusbi: shutting down...");
+	libusb_detach_devices(handle);
+	free(handle);
+}
+

src/scanbuttond-0.2.3/lib/loader.c

+// loader.h: dynamic backend library 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.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include "scanbuttond/loader.h"
+
+backend_t* load_backend(const char* filename)
+{
+	char* error;
+	void* dll_handle = dlopen(filename, RTLD_NOW|RTLD_LOCAL);
+	if (!dll_handle) {
+		syslog(LOG_ERR, "loader: failed to load \"%s\". Error message: \"%s\"",
+			   filename, dlerror());
+		return NULL;
+	}
+	dlerror();  // Clear any existing error
+	backend_t* backend = (backend_t*)malloc(sizeof(backend_t));
+	backend->handle = dll_handle;
+	backend->scanbtnd_get_backend_name = dlsym(dll_handle, "scanbtnd_get_backend_name");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_init = dlsym(dll_handle, "scanbtnd_init");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_rescan = dlsym(dll_handle, "scanbtnd_rescan");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_get_supported_devices = dlsym(dll_handle, "scanbtnd_get_supported_devices");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_open = dlsym(dll_handle, "scanbtnd_open");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_close = dlsym(dll_handle, "scanbtnd_close");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_get_button = dlsym(dll_handle, "scanbtnd_get_button");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_get_sane_device_descriptor = dlsym(dll_handle, "scanbtnd_get_sane_device_descriptor");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+	backend->scanbtnd_exit = dlsym(dll_handle, "scanbtnd_exit");
+	if ((error = dlerror()) != NULL) {
+		syslog(LOG_ERR, "loader: dlsym failed! Error message \"%s\"", error);
+		dlclose(dll_handle);
+		free(backend);
+		return NULL;
+	}
+
+	return backend;
+}
+
+
+void unload_backend(backend_t* backend)
+{
+	dlclose(backend->handle);
+	free(backend);
+}
+

src/scanbuttond-0.2.3/missing

+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+
+scriptversion=2005-06-08.21
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005
+#   Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try \`$0 --help' for more information"
+  exit 1
+fi
+
+run=:
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+  configure_ac=configure.ac
+else
+  configure_ac=configure.in
+fi
+
+msg="missing on your system"
+
+case "$1" in
+--run)
+  # Try to run requested program, and just exit if it succeeds.
+  run=
+  shift
+  "$@" && exit 0
+  # Exit code 63 means version mismatch.  This often happens
+  # when the user try to use an ancient version of a tool on
+  # a file that requires a minimum version.  In this case we
+  # we should proceed has if the program had been absent, or
+  # if --run hadn't been passed.
+  if test $? = 63; then
+    run=:
+    msg="probably too old"
+  fi
+  ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+  --run           try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
+  help2man     touch the output file
+  lex          create \`lex.yy.c', if possible, from existing .c
+  makeinfo     touch the output file
+  tar          try tar, gnutar, gtar, then tar without non-portable flags
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# Now exit if we have it, but it failed.  Also exit now if we
+# don't have it and --version was passed (most likely to detect
+# the program).
+case "$1" in
+  lex|yacc)
+    # Not GNU programs, they don't have --version.
+    ;;
+
+  tar)
+    if test -n "$run"; then
+       echo 1>&2 "ERROR: \`tar' requires --run"
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       exit 1
+    fi
+    ;;
+
+  *)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       # Could not run --version or --help.  This is probably someone
+       # running `$TOOL --version' or `$TOOL --help' to check whether
+       # $TOOL exists and not knowing $TOOL uses missing.
+       exit 1
+    fi
+    ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case "$1" in
+  aclocal*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
+         any GNU archive site."
+    touch aclocal.m4
+    ;;
+
+  autoconf)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`${configure_ac}'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+         archive site."
+    touch configure
+    ;;
+
+  autoheader)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+         from any GNU archive site."
+    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+    test -z "$files" && files="config.h"
+    touch_files=
+    for f in $files; do
+      case "$f" in
+      *:*) touch_files="$touch_files "`echo "$f" |
+				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+      *) touch_files="$touch_files $f.in";;
+      esac
+    done
+    touch $touch_files
+    ;;
+
+  automake*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+         You might want to install the \`Automake' and \`Perl' packages.
+         Grab them from any GNU archive site."
+    find . -type f -name Makefile.am -print |
+	   sed 's/\.am$/.in/' |
+	   while read f; do touch "$f"; done
+    ;;
+
+  autom4te)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.
+         You can get \`$1' as part of \`Autoconf' from any GNU
+         archive site."
+
+    file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
+    test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
+    if test -f "$file"; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo "#! /bin/sh"
+	echo "# Created by GNU Automake missing as a replacement of"
+	echo "#  $ $@"
+	echo "exit 0"
+	chmod +x $file
+	exit 1
+    fi
+    ;;
+
+  bison|yacc)
+    echo 1>&2 "\
+WARNING: \`$1' $msg.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
+         in order for those modifications to take effect.  You can get
+         \`Bison' from any GNU archive site."
+    rm -f y.tab.c y.tab.h
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.y)
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.c
+	    fi
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.h
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f y.tab.h ]; then
+	echo >y.tab.h
+    fi
+    if [ ! -f y.tab.c ]; then
+	echo 'main() { return 0; }' >y.tab.c
+    fi
+    ;;
+
+  lex|flex)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
+         in order for those modifications to take effect.  You can get
+         \`Flex' from any GNU archive site."
+    rm -f lex.yy.c
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.l)
+	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" lex.yy.c
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f lex.yy.c ]; then
+	echo 'main() { return 0; }' >lex.yy.c
+    fi
+    ;;
+
+  help2man)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+	 you modified a dependency of a manual page.  You may need the
+	 \`Help2man' package in order for those modifications to take
+	 effect.  You can get \`Help2man' from any GNU archive site."
+
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    if test -z "$file"; then
+	file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
+    fi
+    if [ -f "$file" ]; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo ".ab help2man is required to generate this page"
+	exit 1
+    fi
+    ;;
+
+  makeinfo)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
+         indirectly affecting the aspect of the manual.  The spurious
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
+    # The file to touch is that specified with -o ...
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    if test -z "$file"; then
+      # ... or it is the one specified with @setfilename ...
+      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $infile`
+      # ... or it is derived from the source name (dir/f.texi becomes f.info)
+      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
+    fi
+    # If the file does not exist, the user really needs makeinfo;
+    # let's fail without touching anything.
+    test -f $file || exit 1
+    touch $file
+    ;;
+
+  tar)
+    shift
+
+    # We have already tried tar in the generic part.
+    # Look for gnutar/gtar before invocation to avoid ugly error
+    # messages.
+    if (gnutar --version > /dev/null 2>&1); then
+       gnutar "$@" && exit 0
+    fi
+    if (gtar --version > /dev/null 2>&1); then
+       gtar "$@" && exit 0
+    fi
+    firstarg="$1"
+    if shift; then
+	case "$firstarg" in
+	*o*)
+	    firstarg=`echo "$firstarg" | sed s/o//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+	case "$firstarg" in
+	*h*)
+	    firstarg=`echo "$firstarg" | sed s/h//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+    fi
+
+    echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+         You may want to install GNU tar or Free paxutils, or check the
+         command line arguments."
+    exit 1
+    ;;
+
+  *)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, and is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.  Check the \`README' file,
+         it often tells you about the needed prerequisites for installing
+         this package.  You may also peek at any GNU archive site, in case
+         some other package would contain this missing \`$1' program."
+    exit 1
+    ;;
+esac
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:

src/scanbuttond-0.2.3/scanbuttond.c

+// scanbuttond.c: the actual daemon ("frontend")
+// 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.
+
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <libgen.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <errno.h>
+#include <getopt.h>
+#include "scanbuttond/config.h"
+#include "scanbuttond/common.h"
+#include "scanbuttond/scanbuttond.h"
+#include "scanbuttond/loader.h"
+
+#define DEF_BACKEND_FILENAME		STRINGIFY(LIB_DIR) "/libscanbtnd-backend_meta.so"
+#define DEF_BUTTONPRESSED_SCRIPT	STRINGIFY(CFG_DIR) "/buttonpressed.sh"
+#define DEF_INITSCANNER_SCRIPT		STRINGIFY(CFG_DIR) "/initscanner.sh"
+#define DEF_POLL_DELAY			333000L
+#define MIN_POLL_DELAY			1000L
+#define DEF_RETRY_DELAY			2000000L
+#define MIN_RETRY_DELAY			10000L
+#define BUF_SIZE			256
+
+static char* connection_names[NUM_CONNECTIONS] =
+{ "none", "libusb" };
+
+
+static struct option const long_opts[] = {
+	{"foreground", no_argument, NULL, 'f'},
+	{"backend", required_argument, NULL, 'b'},
+	{"buttonscript", required_argument, NULL, 's'},
+	{"initscript", required_argument, NULL, 'S'},
+	{"pollingdelay", required_argument, NULL, 'p'},
+	{"retrydelay", required_argument, NULL, 'r'},
+	{"help", no_argument, NULL, 'h'},
+	{"version", no_argument, NULL, 'v'},
+	{NULL, 0, NULL, 0}
+};
+
+
+char* buttonpressed_script;
+char* initscanner_script;
+char* backend_filename;
+backend_t* backend;
+long poll_delay;
+long retry_delay;
+int daemonize;
+int killed = 0;
+char* path;
+
+
+char* scanbtnd_get_connection_name(int connection)
+{
+	return connection_names[connection];
+}
+
+
+void shutdown(void)
+{
+	syslog(LOG_INFO, "shutting down...");
+	backend->scanbtnd_exit();
+	unload_backend(backend);
+	syslog(LOG_DEBUG, "shutdown complete");
+	closelog();
+}
+
+
+// Ensures a graceful exit on SIGHUP/SIGTERM/SIGINT/SIGSEGV
+void sighandler(int i)
+{
+	killed = 1;
+	syslog(LOG_INFO, "received signal %d", i);
+	shutdown();
+	exit(i == SIGTERM ? EXIT_SUCCESS : EXIT_FAILURE);
+}
+
+
+// Executes an external program and wait until it terminates
+void execute_and_wait(const char* program)
+{
+	system(program);
+}
+
+
+void list_devices(scanner_t* devices)
+{
+	scanner_t* dev = devices;
+	while (dev != NULL) {
+		syslog(LOG_INFO, "found scanner: vendor=\"%s\", product=\"%s\", connection=\"%s\", sane_name=\"%s\"",
+			   dev->vendor, dev->product, scanbtnd_get_connection_name(dev->connection),
+			   backend->scanbtnd_get_sane_device_descriptor(dev));
+		dev = dev->next;
+	}
+}
+
+
+void show_version(void)
+{
+	printf("This is scanbuttond, version %s\n", VERSION);
+	printf("Copyleft )c( 2004-2006 by Bernhard Stiftner and contributors.\n");
+	printf("Scanbuttond comes with ABSOLUTELY NO WARRANTY!\n");
+	printf("This is free software, and you are welcome to redistribute it\n");
+	printf("under certain conditions; see the file COPYING for details.\n");
+}
+
+
+void show_usage(void)
+{
+	printf("Usage: scanbuttond [OPTION]...\n\n");
+	printf("Starts a script when a button on a scanner has been pressed.\n\n");
+	printf("Options:\n");
+	printf("  -f, --foreground            Run in foreground instead of background\n");
+	printf("  -b, --backend=FILE          Use the specified backend library file\n");
+	printf("                              default: %s\n", DEF_BACKEND_FILENAME);
+	printf("  -s, --buttonscript=SCRIPT   The name of the script to be run when a button has been pressed\n");
+	printf("                              default: %s\n", DEF_BUTTONPRESSED_SCRIPT);
+	printf("  -S, --initscript=SCRIPT     The name of the script to be run to initialize the scanners\n");
+	printf("                              default: %s\n", DEF_INITSCANNER_SCRIPT);
+	printf("  -p, --pollingdelay=DELAY    The polling delay (ms), default: %ld\n", DEF_POLL_DELAY);
+	printf("  -r, --retrydelay=DELAY      The retry delay (ms), default: %ld\n", DEF_RETRY_DELAY);
+	printf("  -h, --help                  Shows this screen\n");
+	printf("  -v, --version               Shows the version\n");
+}
+
+
+void process_options(int argc, char** argv)
+{
+	int c;
+
+	buttonpressed_script = NULL;
+	initscanner_script = NULL;
+	poll_delay = -1;
+	retry_delay = -1;
+	daemonize = 1;
+
+	while ((c = getopt_long (argc, argv, "fb:s:S:p:r:hv", long_opts, NULL)) != -1) {
+		switch (c) {
+			case 'f':
+				daemonize = 0;
+				break;
+			case 'b':
+				backend_filename = optarg;
+				break;
+			case 's':
+				buttonpressed_script = optarg;
+				break;
+			case 'S':
+				initscanner_script = optarg;
+				break;
+			case 'p':
+				poll_delay = atol(optarg);
+				if (poll_delay < MIN_POLL_DELAY) {
+					printf("Invalid polling delay (%ld). Must be at least %ld.\n",
+						   poll_delay, MIN_POLL_DELAY);
+					exit(EXIT_FAILURE);
+				}
+				break;
+			case 'r':
+				retry_delay = atol(optarg);
+				if (retry_delay < MIN_RETRY_DELAY) {
+					printf("Invalid retry delay (%ld). Must be at least %ld.\n",
+						   retry_delay, MIN_RETRY_DELAY);
+					exit(EXIT_FAILURE);
+				}
+				break;
+			case 'h':
+				show_usage();
+				exit(EXIT_SUCCESS);
+				break;
+			case 'v':
+				show_version();
+				exit(EXIT_SUCCESS);
+				break;
+		}
+	}
+
+	if (backend_filename == NULL)
+		backend_filename = DEF_BACKEND_FILENAME;
+	if (buttonpressed_script == NULL)
+		buttonpressed_script = DEF_BUTTONPRESSED_SCRIPT;
+	if (initscanner_script == NULL)
+		initscanner_script = DEF_INITSCANNER_SCRIPT;
+	if (poll_delay == -1)
+		poll_delay = DEF_POLL_DELAY;
+	if (retry_delay == -1)
+		retry_delay = DEF_RETRY_DELAY;
+}
+
+
+int main(int argc, char** argv)
+{
+	int button;
+	int result;
+	pid_t pid, sid;
+	scanner_t* scanners;
+	scanner_t* scanner;
+
+	process_options(argc, argv);
+
+	backend = load_backend(backend_filename);
+	if (!backend) {
+		printf("Unable to load backend library \"%s\"!\n", backend_filename);
+		exit(EXIT_FAILURE);
+	}
+
+	// daemonize
+	if (daemonize) {
+		pid = fork();
+		if (pid < 0) {
+			printf("Can't fork!\n");
+			exit(EXIT_FAILURE);
+		} else if (pid > 0) {
+			exit(EXIT_SUCCESS);
+		}
+	}
+
+	umask(0);
+
+	openlog(NULL, 0, LOG_DAEMON);
+
+	// create a new session for the child process
+	if (daemonize) {
+		sid = setsid();
+		if (sid < 0) {
+			syslog(LOG_ERR, "Could not create a new SID! Terminating.");
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	// Change the current working directory
+	if ((chdir("/")) < 0) {
+		syslog(LOG_WARNING, "Could not chdir to /. Hmmm, strange... "\
+				"Trying to continue.");
+	}
+
+	// close standard file descriptors
+	if (daemonize) {
+		close(STDIN_FILENO);
+		close(STDOUT_FILENO);
+		close(STDERR_FILENO);
+	}
+
+	// setup the environment
+	char* oldpath = getenv("PATH");
+	char* dir = dirname(argv[0]);
+	path = (char*)malloc(strlen(oldpath) + strlen(dir) + 1);
+	strcpy(path, oldpath);
+	strcat(path, ":");
+	strcat(path, dir);
+	setenv("PATH", path, 1);
+	free(path);
+
+	syslog(LOG_DEBUG, "running scanner initialization script...");
+	execute_and_wait(initscanner_script);
+	syslog(LOG_DEBUG, "initialization script executed.");
+
+	if (backend->scanbtnd_init() != 0) {
+		syslog(LOG_ERR, "Error initializing backend. Terminating.");
+		exit(EXIT_FAILURE);
+	}
+
+	scanners = backend->scanbtnd_get_supported_devices();
+
+	if (scanners == NULL) {
+		syslog(LOG_WARNING, "no known scanner found yet, " \
+				"waiting for device to be attached");
+	}
+
+	list_devices(scanners);
+
+	signal(SIGTERM, &sighandler);
+	signal(SIGHUP, &sighandler);
+	signal(SIGINT, &sighandler);
+	signal(SIGSEGV, &sighandler);
+	signal(SIGCLD, SIG_IGN);
+
+	syslog(LOG_INFO, "scanbuttond started");
+
+	// main loop
+	while (killed == 0) {
+
+		if (scanners == NULL) {
+			syslog(LOG_DEBUG, "rescanning devices...");
+			backend->scanbtnd_rescan();
+			scanners = backend->scanbtnd_get_supported_devices();
+			if (scanners == NULL) {
+				syslog(LOG_DEBUG, "no supported devices found. rescanning in a few seconds...");
+				usleep(retry_delay);
+				continue;
+			}
+			syslog(LOG_DEBUG, "found supported devices. running scanner initialization script...");
+			execute_and_wait(initscanner_script);
+			syslog(LOG_DEBUG, "initialization script executed.");
+			scanners = backend->scanbtnd_get_supported_devices();
+			continue;
+		}
+
+		scanner = scanners;
+		while (scanner != NULL) {
+			result = backend->scanbtnd_open(scanner);
+			if (result != 0) {
+				syslog(LOG_WARNING, "scanbtnd_open failed, error code: %d", result);
+				if (result == -ENODEV) {
+					// device has been disconnected, force re-scan
+					syslog(LOG_INFO, "scanbtnd_open returned -ENODEV, device rescan will be performed");
+					scanners = NULL;
+					usleep(retry_delay);
+					break;
+				}
+				usleep(retry_delay);
+				break;
+			}
+
+			button = backend->scanbtnd_get_button(scanner);
+			backend->scanbtnd_close(scanner);
+
+			if ((button > 0) && (button != scanner->lastbutton)) {
+				syslog(LOG_INFO, "button %d has been pressed.", button);
+				scanner->lastbutton = button;
+				char cmd[BUF_SIZE];
+				snprintf(cmd, BUF_SIZE, "%s %d %s", buttonpressed_script, button,
+						 backend->scanbtnd_get_sane_device_descriptor(scanner));
+				execute_and_wait(cmd);
+			}
+			if ((button == 0) && (scanner->lastbutton > 0)) {
+				syslog(LOG_INFO, "button %d has been released.", scanner->lastbutton);
+				scanner->lastbutton = button;
+			}
+			scanner = scanner->next;
+		}
+
+		usleep(poll_delay);
+
+	}
+
+	syslog(LOG_WARNING, "exited main loop!?!");
+
+	shutdown();
+	exit(EXIT_SUCCESS);
+}
+

src/scanbuttond-0.2.3/scripts/Makefile.am

+pkgsysconfdir = $(sysconfdir)/$(PACKAGE)
+pkgsysconf_SCRIPTS = buttonpressed.sh initscanner.sh
+
+EXTRA_DIST = $(pkgsysconf_SCRIPTS)

src/scanbuttond-0.2.3/scripts/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.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+
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+	list='$(DISTFILES)'; for file in $$list; do \
+	  case $$file in \
+	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
+	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
+	  esac; \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+	    dir="/$$dir"; \
+	    $(mkdir_p) "$(distdir)$$dir"; \
+	  else \
+	    dir=''; \
+	  fi; \
+	  if test -d $$d/$$file; then \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
+	    test -f $(distdir)/$$file \
+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS)
+installdirs:
+	for dir in "$(DESTDIR)$(pkgsysconfdir)"; do \
+	  test -z "$$dir" || $(mkdir_p) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-libtool
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+info: info-am
+
+info-am:
+
+install-data-am: install-pkgsysconfSCRIPTS
+
+install-exec-am:
+
+install-info: install-info-am
+
+install-man:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-info-am uninstall-pkgsysconfSCRIPTS
+
+.PHONY: all all-am check check-am clean clean-generic clean-libtool \
+	distclean distclean-generic distclean-libtool 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-man \
+	install-pkgsysconfSCRIPTS install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am uninstall uninstall-am \
+	uninstall-info-am uninstall-pkgsysconfSCRIPTS
+
+# 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/scripts/buttonpressed.sh

+#!/bin/sh
+
+# This script is started by scanbuttond whenever a scanner button has been pressed.
+# Scanbuttond passes the following parameters to us:
+# $1 ... the button number
+# $2 ... the scanner's SANE device name, which comes in handy if there are two or 
+#        more scanners. In this case we can pass the device name to SANE programs 
+#        like scanimage.
+
+TMPFILE="/tmp/scan.tiff"
+LOCKFILE="/tmp/copy.lock"
+
+case $1 in
+	1)
+		echo "button 1 has been pressed on $2"
+		
+		# This example turns your scanner+printer into a photocopier.
+		# Fine-tuned for the Epson Perfection 2400, the HP LaserJet 1200 and
+		# ISO A4 paper size so that the scanned document matches the printer
+		# output as closely as possible.
+		#
+		# if [ -f $LOCKFILE ]; then
+		#   echo "Error: Another scanning operation is currently in progress"
+		#   exit
+		# fi
+		# touch $LOCKFILE
+		# rm -f $TMPFILE
+		# scanimage --device-name $2 --format tiff --mode Gray --quick-format A4 \
+		# --resolution 300 --sharpness 0 --brightness -3 \
+		# --gamma-correction "High contrast printing" > $TMPFILE
+		# tiff2ps -z -w 8.27 -h 11.69 $TMPFILE | lpr
+		# rm -f $LOCKFILE
+		#
+		;;
+	2)
+		echo "button 2 has been pressed on $2"
+		;;
+	3)
+		echo "button 3 has been pressed on $2"
+		;;
+	4)
+		echo "button 4 has been pressed on $2"
+		;;
+esac
+

src/scanbuttond-0.2.3/scripts/initscanner.sh

+#!/bin/sh
+
+# This script is executed whenever scanbuttond
+# finds new devices.
+# If your scanner needs a firmware upload or any other kind
+# of special action to be taken on initialization, put
+# the apropriate command here.
+
+# Example:
+# scanimage -n
+# or
+# sane-find-scanners
+