#!/usr/bin/env python

# idl2deb - quick hack by W. Martin Borgert <debacle@debian.org> to create
# Debian GNU/Linux packages from idl2wrs modules for Wireshark.
# Copyright 2003, 2008, W. Martin Borgert

# Makefile.am and configure.ac code by:
# Copyright 2001, Ericsson Inc.
# Frank Singleton <frank.singleton@ericsson.com>
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.com>
# Copyright 1998 Gerald Combs

# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import optparse
import os
import string
import sys
import time

scriptinfo = """idl2deb version 2008-03-10
Copyright 2003, 2008, W. Martin Borgert
Free software, released under the terms of the GPL."""

def bootstrap():
    """Generate Makefile.in and configure script."""
    os.system("aclocal")
    os.system("autoconf")
    os.system("libtoolize --automake --copy --force")
    os.system("automake --add-missing --copy --foreign")

def create_file(preserve, filename, content, mode = None):
    """Create a file with given content."""
    if preserve and os.path.isfile(filename):
        return
    f = open(filename, 'w')
    f.write(content)
    f.close()
    if mode:
        os.chmod(filename, mode)

def create_files(version, deb, email, idl, name, preserve, iso, rfc):
    """Create all files for the .deb build process."""
    base = os.path.basename(idl.lower().split(".idl")[0])
    create_file(preserve, "Makefile.am", """#

plugindir = @plugindir@

plugin_LTLIBRARIES = %s.la
%s_la_SOURCES = packet-%s.c
%s_la_LDFLAGS = -module -avoid-version

GLIB_CFLAGS = `pkg-config --cflags glib-2.0`
GLIB_LIBS = `pkg-config --libs glib-2.0`
BUILT_SOURCES = packet-%s.c
INCLUDES = -DHAVE_CONFIG -DHAVE_SYS_TYPES_H -DHAVE_SYS_TIME_H \\
    -DHAVE_STDARG_H -D_U_=\"__attribute__((unused))\" \\
    -I/usr/include/wireshark -DWS_VAR_IMPORT=extern $(GLIB_CFLAGS)
LDADD = $(GLIB_LIBS)

# Libs must be cleared, or else libtool won't create a shared module.
# If your module needs to be linked against any particular libraries,
# add them here.
LIBS =

%s_la_DEPENDENCIES = packet-%s-static.o

packet-%s-static.o: packet-%s.c
	$(LTCOMPILE) -c -o packet-%s-static.o \\
	  -D__WIRESHARK_STATIC__ packet-%s.c

packet-%s.c: """  % ((base,) * 12) + idl + """
	$(IDL2WRS) -I. $< > $@
""")

    create_file(preserve, "configure.ac", """AC_INIT(%s, 1.0)
AC_PROG_LIBTOOL
AM_INIT_AUTOMAKE
AM_MAINTAINER_MODE
AC_PROG_CC
AC_STDC_HEADERS
AC_PROG_INSTALL
AC_SUBST(CFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(LDFLAGS)
PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.2.2)
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_LIBS)
IDL2WRS=\"`type -p idl2wrs`\"
AC_SUBST(IDL2WRS)
WIRESHARK_VERSION=\"%s\"
plugindir=\"$libdir/wireshark/plugins/$WIRESHARK_VERSION\"
AC_SUBST(plugindir)
AC_OUTPUT([Makefile])
""" % (base, version))

    if not os.path.isdir("debian"):
        os.mkdir("debian")

    create_file(preserve, "debian/rules", """#!/usr/bin/make -f

include /usr/share/cdbs/1/rules/debhelper.mk
include /usr/share/cdbs/1/class/autotools.mk

PREFIX=`pwd`/debian/wireshark-giop-%s

binary-post-install/wireshark-giop-%s::
	rm -f $(PREFIX)/usr/lib/wireshark/plugins/%s/*.a
""" % (base, base, version), 0755)

    create_file(preserve, "debian/control", """Source: wireshark-giop-%s
Section: net
Priority: optional
Maintainer: %s <%s>
Standards-Version: 3.6.1.0
Build-Depends: wireshark-dev, autotools-dev, debhelper, cdbs

Package: wireshark-giop-%s
Architecture: any
Depends: wireshark (= %s), ${shlibs:Depends}
Description: GIOP dissector for CORBA interface %s
 This package provides a dissector for GIOP (General Inter-ORB
 Protocol) for the Wireshark protocol analyser.  It decodes the CORBA
 (Common Object Request Broker Architecture) interfaces described
 in the IDL (Interface Definition Language) file '%s.idl'.
""" % (base, name, email, base, deb, base, base))

    create_file(preserve, "debian/changelog",
            """wireshark-giop-%s (0.0.1-1) unstable; urgency=low

  * Automatically created package.

 -- %s <%s>  %s
""" % (base, name, email, rfc))

    create_file(preserve, "debian/copyright",
            """This package has been created automatically by idl2deb on
%s for Debian GNU/Linux.

Wireshark: http://www.wireshark.org/

Copyright:

GPL, as evidenced by existence of GPL license file \"COPYING\".
(the GNU GPL may be viewed on Debian systems in
/usr/share/common-licenses/GPL)
""" % (iso))

def get_wrs_version():
    """Detect version of wireshark-dev package."""
    deb = os.popen(
        "dpkg-query -W --showformat='${Version}' wireshark-dev").read()
    debv = string.find(deb, "-")
    if debv == -1: debv = len(deb)
    version = deb[string.find(deb, ":")+1:debv]
    return version, deb

def get_time():
    """Detect current time and return ISO and RFC time string."""
    currenttime = time.gmtime()
    return time.strftime("%Y-%m-%d %H:%M:%S +0000", currenttime), \
           time.strftime("%a, %d %b %Y %H:%M:%S +0000", currenttime)

def main():
    opts = process_opts(sys.argv)
    iso, rfc = get_time()
    version, deb = get_wrs_version()
    create_files(version, deb,
                 opts.email, opts.idl, opts.name, opts.preserve,
                 iso, rfc)
    bootstrap()
    os.system("dpkg-buildpackage " + opts.dbopts)

def process_opts(argv):
    """Process command line options."""
    parser = optparse.OptionParser(
        version=scriptinfo,
        description="""Example:
%prog -e me@foo.net -i bar.idl -n \"My Name\" -d \"-rfakeroot -uc -us\"""")
    parser.add_option("-d", "--dbopts",
                      default="", metavar="opts",
                      help="options for dpkg-buildpackage")
    parser.add_option("-e", "--email", metavar="address",
                      default="invalid@invalid.invalid",
                      help="use e-mail address")
    parser.add_option("-i", "--idl", metavar="idlfile",
                      help="IDL file to use (mandatory)")
    parser.add_option("-n", "--name", default="No Name",
                      help="use user name", metavar="name")
    parser.add_option("-p", "--preserve", action="store_true",
                      help="do not overwrite files")
    opts, args = parser.parse_args()
    if not opts.idl:
        print "mandatory IDL file parameter missing"
        sys.exit(1)
    if not os.access(opts.idl, os.R_OK):
        print "IDL file not accessible"
        sys.exit(1)
    return opts

if __name__ == '__main__':
    main()