Add new bundle_volume module
[snf-image-creator] / image_creator / dialog_main.py
index 6e1ea99..4071018 100644 (file)
@@ -38,572 +38,97 @@ import sys
 import os
 import textwrap
 import signal
-import StringIO
+import optparse
 
 from image_creator import __version__ as version
-from image_creator.util import FatalError, MD5
-from image_creator.output.dialog import InitializationOutput, GaugeOutput
+from image_creator.util import FatalError
+from image_creator.output import Output
+from image_creator.output.cli import SimpleOutput
+from image_creator.output.dialog import GaugeOutput
+from image_creator.output.composite import CompositeOutput
 from image_creator.disk import Disk
 from image_creator.os_type import os_cls
-from image_creator.kamaki_wrapper import Kamaki, ClientError
-from image_creator.help import get_help_file
-
-MSGBOX_WIDTH = 60
-YESNO_WIDTH = 50
-MENU_WIDTH = 70
-INPUTBOX_WIDTH = 70
-CHECKBOX_WIDTH = 70
-
-CONFIGURATION_TASKS = [
- ("Partition table manipulation", ["FixPartitionTable"],
-  ["linux", "windows"]),
- ("File system resize",
-  ["FilesystemResizeUnmounted", "FilesystemResizeMounted"],
-  ["linux", "windows"]),
- ("Swap partition configuration", ["AddSwap"], ["linux"]),
- ("SSH keys removal", ["DeleteSSHKeys"], ["linux"]),
- ("Temporal RDP disabling", ["DisableRemoteDesktopConnections"], ["windows"]),
- ("SELinux relabeling at next boot", ["SELinuxAutorelabel"],
-  ["linux"]),
- ("Hostname/Computer Name assignment", ["AssignHostname"],
-  ["windows", "linux"]),
- ("Password change", ["ChangePassword"], ["windows", "linux"]),
- ("File injection", ["EnforcePersonality"], ["windows", "linux"])
-]
-
-
-class Reset(Exception):
-    pass
-
-
-def confirm_exit(d, msg=''):
-    return not d.yesno("%s Do you want to exit?" % msg, width=YESNO_WIDTH)
-
-
-def confirm_reset(d):
-    return not d.yesno(
-        "Are you sure you want to reset everything?",
-        width=YESNO_WIDTH)
-
-
-def extract_image(session):
-    d = session['dialog']
-    dir = os.getcwd()
-    while 1:
-        if dir and dir[-1] != os.sep:
-            dir = dir + os.sep
-
-        (code, path) = d.fselect(dir, 10, 50, title="Save image as...")
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
-
-        if os.path.isdir(path):
-            dir = path
-            continue
-
-        if os.path.isdir("%s.meta" % path):
-            d.msgbox("Can't overwrite directory `%s.meta'" % path,
-                     width=MSGBOX_WIDTH)
-            continue
-
-        if os.path.isdir("%s.md5sum" % path):
-            d.msgbox("Can't overwrite directory `%s.md5sum'" % path,
-                     width=MSGBOX_WIDTH)
-            continue
-
-        basedir = os.path.dirname(path)
-        name = os.path.basename(path)
-        if not os.path.exists(basedir):
-            d.msgbox("Directory `%s' does not exist" % basedir,
-                     width=MSGBOX_WIDTH)
-            continue
-
-        dir = basedir
-        if len(name) == 0:
-            continue
-
-        files = ["%s%s" % (path, ext) for ext in ('', '.meta', '.md5sum')]
-        overwrite = filter(os.path.exists, files)
-
-        if len(overwrite) > 0:
-            if d.yesno("The following file(s) exist:\n"
-                        "%s\nDo you want to overwrite them?" %
-                        "\n".join(overwrite), width=YESNO_WIDTH):
-                continue
+from image_creator.dialog_wizard import wizard
+from image_creator.dialog_menu import main_menu
+from image_creator.dialog_util import SMALL_WIDTH, WIDTH, confirm_exit, \
+    Reset, update_background_title
 
-        out = GaugeOutput(d, "Image Extraction", "Extracting image...")
-        try:
-            dev = session['device']
-            if "checksum" not in session:
-                size = dev.meta['SIZE']
-                md5 = MD5(out)
-                session['checksum'] = md5.compute(session['snapshot'], size)
-
-            # Extract image file
-            dev.out = out
-            dev.dump(path)
-
-            # Extract metadata file
-            out.output("Extracting metadata file...")
-            metastring = '\n'.join(
-                ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()])
-            metastring += '\n'
-            with open('%s.meta' % path, 'w') as f:
-                f.write(metastring)
-            out.success('done')
-
-            # Extract md5sum file
-            out.output("Extracting md5sum file...")
-            md5str = "%s %s\n" % (session['checksum'], name)
-            with open('%s.md5sum' % path, 'w') as f:
-                f.write(md5str)
-            out.success("done")
 
-        finally:
-            out.cleanup()
-        d.msgbox("Image file `%s' was successfully extracted!" % path,
-                 width=MSGBOX_WIDTH)
-        break
+def image_creator(d, media, out):
 
-    return True
+    d.setBackgroundTitle('snf-image-creator')
 
+    gauge = GaugeOutput(d, "Initialization", "Initializing...")
+    out.add(gauge)
+    disk = Disk(media, out)
 
-def upload_image(session):
-    d = session["dialog"]
-    size = session['device'].meta['SIZE']
-
-    if "account" not in session:
-        d.msgbox("You need to provide your ~okeanos login username before you "
-                 "can upload images to pithos+", width=MSGBOX_WIDTH)
-        return False
-
-    if "token" not in session:
-        d.msgbox("You need to provide your ~okeanos account authentication "
-                 "token before you can upload images to pithos+",
-                 width=MSGBOX_WIDTH)
-        return False
-
-    while 1:
-        init = session["upload"] if "upload" in session else ''
-        (code, answer) = d.inputbox("Please provide a filename:", init=init,
-                                    width=INPUTBOX_WIDTH)
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
-
-        filename = answer.strip()
-        if len(filename) == 0:
-            d.msgbox("Filename cannot be empty", width=MSGBOX_WIDTH)
-            continue
-
-        break
+    def signal_handler(signum, frame):
+        gauge.cleanup()
+        disk.cleanup()
 
-    out = GaugeOutput(d, "Image Upload", "Uploading...")
-    if 'checksum' not in session:
-        md5 = MD5(out)
-        session['checksum'] = md5.compute(session['snapshot'], size)
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
     try:
-        kamaki = Kamaki(session['account'], session['token'], out)
-        try:
-            # Upload image file
-            with open(session['snapshot'], 'rb') as f:
-                session["upload"] = kamaki.upload(f, size, filename,
-                                                  "Calculating block hashes",
-                                                  "Uploading missing blocks")
-            # Upload metadata file
-            out.output("Uploading metadata file...")
-            metastring = '\n'.join(
-                ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()])
-            metastring += '\n'
-            kamaki.upload(StringIO.StringIO(metastring), size=len(metastring),
-                          remote_path="%s.meta" % filename)
-            out.success("done")
-
-            # Upload md5sum file
-            out.output("Uploading md5sum file...")
-            md5str = "%s %s\n" % (session['checksum'], filename)
-            kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
-                          remote_path="%s.md5sum" % filename)
-            out.success("done")
-
-        except ClientError as e:
-            d.msgbox("Error in pithos+ client: %s" % e.message,
-                     title="Pithos+ Client Error", width=MSGBOX_WIDTH)
-            if 'upload' in session:
-                del session['upload']
-            return False
-    finally:
-        out.cleanup()
-
-    d.msgbox("Image file `%s' was successfully uploaded to pithos+" % filename,
-             width=MSGBOX_WIDTH)
+        snapshot = disk.snapshot()
+        dev = disk.get_device(snapshot)
 
-    return True
+        metadata = {}
+        for (key, value) in dev.meta.items():
+            metadata[str(key)] = str(value)
 
+        dev.mount(readonly=True)
+        out.output("Collecting image metadata...")
+        cls = os_cls(dev.distro, dev.ostype)
+        image_os = cls(dev.root, dev.g, out)
+        dev.umount()
 
-def register_image(session):
-    d = session["dialog"]
+        for (key, value) in image_os.meta.items():
+            metadata[str(key)] = str(value)
 
-    if "account" not in session:
-        d.msgbox("You need to provide your ~okeanos login username before you "
-                 "can register an images to cyclades",
-                 width=MSGBOX_WIDTH)
-        return False
+        out.success("done")
+        gauge.cleanup()
+        out.remove(gauge)
 
-    if "token" not in session:
-        d.msgbox("You need to provide your ~okeanos account authentication "
-                 "token before you can register an images to cyclades",
-                 width=MSGBOX_WIDTH)
-        return False
+        # Make sure the signal handler does not call gauge.cleanup again
+        def dummy(self):
+            pass
+        gauge.cleanup = type(GaugeOutput.cleanup)(dummy, gauge, GaugeOutput)
 
-    if "upload" not in session:
-        d.msgbox("You need to have an image uploaded to pithos+ before you "
-                 "can register it to cyclades",
-                 width=MSGBOX_WIDTH)
-        return False
+        session = {"dialog": d,
+                   "disk": disk,
+                   "snapshot": snapshot,
+                   "device": dev,
+                   "image_os": image_os,
+                   "metadata": metadata}
 
-    while 1:
-        (code, answer) = d.inputbox("Please provide a registration name:"
-                                " be registered:", width=INPUTBOX_WIDTH)
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
+        msg = "snf-image-creator detected a %s system on the input media. " \
+              "Would you like to run a wizard to assist you through the " \
+              "image creation process?\n\nChoose <Wizard> to run the wizard," \
+              " <Expert> to run the snf-image-creator in expert mode or " \
+              "press ESC to quit the program." \
+              % (dev.ostype if dev.ostype == dev.distro else "%s (%s)" %
+                 (dev.ostype, dev.distro))
+
+        update_background_title(session)
+
+        while True:
+            code = d.yesno(msg, width=WIDTH, height=12, yes_label="Wizard",
+                           no_label="Expert")
+            if code == d.DIALOG_OK:
+                if wizard(session):
+                    break
+            elif code == d.DIALOG_CANCEL:
+                main_menu(session)
+                break
 
-        name = answer.strip()
-        if len(name) == 0:
-            d.msgbox("Registration name cannot be empty", width=MSGBOX_WIDTH)
-            continue
-        break
+            if confirm_exit(d):
+                break
 
-    out = GaugeOutput(d, "Image Registration", "Registrating image...")
-    try:
-        out.output("Registring image to cyclades...")
-        try:
-            kamaki = Kamaki(session['account'], session['token'], out)
-            kamaki.register(name, session['upload'], session['metadata'])
-            out.success('done')
-        except ClientError as e:
-            d.msgbox("Error in pithos+ client: %s" % e.message)
-            return False
+        d.infobox("Thank you for using snf-image-creator. Bye", width=53)
     finally:
-        out.cleanup()
-
-    d.msgbox("Image `%s' was successfully registered to cyclades as `%s'" %
-             (session['upload'], name), width=MSGBOX_WIDTH)
-    return True
-
-
-def kamaki_menu(session):
-    d = session['dialog']
-    default_item = "Account"
-    while 1:
-        account = session["account"] if "account" in session else "<none>"
-        token = session["token"] if "token" in session else "<none>"
-        upload = session["upload"] if "upload" in session else "<none>"
-        (code, choice) = d.menu(
-            "Choose one of the following or press <Back> to go back.",
-            width=MENU_WIDTH,
-            choices=[("Account", "Change your ~okeanos username: %s" %
-                      account),
-                     ("Token", "Change your ~okeanos token: %s" % token),
-                     ("Upload", "Upload image to pithos+"),
-                     ("Register", "Register image to cyclades: %s" % upload)],
-            cancel="Back",
-            default_item=default_item,
-            help_button=1,
-            title="Image Registration Menu")
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
-
-        if choice == "Account":
-            default_item = "Account"
-            (code, answer) = d.inputbox(
-                "Please provide your ~okeanos account e-mail address:",
-                init=session["account"] if "account" in session else '',
-                width=70)
-            if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-                continue
-            if len(answer) == 0 and "account" in session:
-                    del session["account"]
-            else:
-                session["account"] = answer.strip()
-                default_item = "Token"
-        elif choice == "Token":
-            default_item = "Token"
-            (code, answer) = d.inputbox(
-                "Please provide your ~okeanos account authetication token:",
-                init=session["token"] if "token" in session else '',
-                width=70)
-            if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-                continue
-            if len(answer) == 0 and "token" in session:
-                del session["token"]
-            else:
-                session["token"] = answer.strip()
-                default_item = "Upload"
-        elif choice == "Upload":
-            if upload_image(session):
-                default_item = "Register"
-            else:
-                default_item = "Upload"
-        elif choice == "Register":
-            if register_image(session):
-                return True
-            else:
-                default_item = "Register"
-
-
-def add_property(session):
-    d = session['dialog']
-
-    while 1:
-        (code, answer) = d.inputbox("Please provide a name for a new image"
-                                    " property:", width=INPUTBOX_WIDTH)
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
-
-        name = answer.strip()
-        if len(name) == 0:
-            d.msgbox("A property name cannot be empty", width=MSGBOX_WIDTH)
-            continue
-
-        break
-
-    while 1:
-        (code, answer) = d.inputbox("Please provide a value for image "
-                                   "property %s" % name, width=INPUTBOX_WIDTH)
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
-
-        value = answer.strip()
-        if len(value) == 0:
-            d.msgbox("Value cannot be empty", width=MSGBOX_WIDTH)
-            continue
-
-        break
-
-    session['metadata'][name] = value
-
-    return True
-
-
-def modify_properties(session):
-    d = session['dialog']
-
-    while 1:
-        choices = []
-        for (key, val) in session['metadata'].items():
-            choices.append((str(key), str(val)))
-
-        (code, choice) = d.menu(
-            "In this menu you can edit existing image properties or add new "
-            "ones. Be carefull! Most properties have special meaning and "
-            "alter the image deployment behaviour. Press <HELP> to see more "
-            "information about image properties. Press <BACK> when done.",
-            height=18,
-            width=MENU_WIDTH,
-            choices=choices, menu_height=10,
-            ok_label="EDIT", extra_button=1, extra_label="ADD", cancel="BACK",
-            help_button=1, help_label="HELP", title="Image Metadata")
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            break
-        # Edit button
-        elif code == d.DIALOG_OK:
-            (code, answer) = d.inputbox("Please provide a new value for "
-                    "the image property with name `%s':" % choice,
-                    init=session['metadata'][choice], width=INPUTBOX_WIDTH)
-            if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-                value = answer.strip()
-                if len(value) == 0:
-                    d.msgbox("Value cannot be empty!")
-                    continue
-                else:
-                    session['metadata'][choice] = value
-        # ADD button
-        elif code == d.DIALOG_EXTRA:
-            add_property(session)
-
-
-def delete_properties(session):
-    d = session['dialog']
-
-    choices = []
-    for (key, val) in session['metadata'].items():
-        choices.append((key, "%s" % val, 0))
-
-    (code, to_delete) = d.checklist("Choose which properties to delete:",
-                                    choices=choices, width=CHECKBOX_WIDTH)
-    count = len(to_delete)
-    # If the user exits with ESC or CANCEL, the returned tag list is empty.
-    for i in to_delete:
-        del session['metadata'][i]
-
-    if count > 0:
-        d.msgbox("%d image properties were deleted.", width=MSGBOX_WIDTH)
-
-
-def exclude_tasks(session):
-    d = session['dialog']
-
-    index = 0
-    displayed_index = 1
-    choices = []
-    mapping = {}
-    if 'excluded_tasks' not in session:
-        session['excluded_tasks'] = []
-
-    if -1 in session['excluded_tasks']:
-        if not d.yesno("Image deployment configuration is disabled. "
-                       "Do you wish to enable it?", width=YESNO_WIDTH):
-            session['excluded_tasks'].remove(-1)
-        else:
-            return
-
-    for (msg, task, osfamily) in CONFIGURATION_TASKS:
-        if session['metadata']['OSFAMILY'] in osfamily:
-            checked = 1 if index in session['excluded_tasks'] else 0
-            choices.append((str(displayed_index), msg, checked))
-            mapping[displayed_index] = index
-            displayed_index += 1
-        index += 1
-
-    while 1:
-        (code, tags) = d.checklist(
-            "Please choose which configuration tasks you would like to "
-            "prevent from running during image deployment. "
-            "Press <No Config> to supress any configuration. "
-            "Press <Help> for more help on the image deployment configuration "
-            "tasks.", height=19, list_height=8,
-            title="Exclude Configuration Tasks", choices=choices,
-            width=CHECKBOX_WIDTH, help_button=1, extra_button=1,
-            extra_label="No Config")
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            break
-        elif code == d.DIALOG_HELP:
-            help_file = get_help_file("configuration_tasks")
-            assert os.path.exists(help_file)
-            d.textbox(help_file, title="Configuration Tasks",
-                                                        width=70, height=40)
-            continue
-        elif code == d.DIALOG_EXTRA:
-            session['excluded_tasks'] = [-1]
-            session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
-            break
-        elif code == d.DIALOG_OK:
-            session['excluded_tasks'] = []
-            for tag in tags:
-                session['excluded_tasks'].append(mapping[int(tag)])
-
-            exclude_metadata = []
-            for task in session['excluded_tasks']:
-                exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
-
-            session['task_metadata'] = \
-                        map(lambda x: "EXCLUDE_TASK_%s" % x, exclude_metadata)
-            break
-
-
-def sysprep(session):
-    d = session['dialog']
-    image_os = session['image_os']
-
-    syspreps = image_os.list_syspreps()
-
-    wrapper = textwrap.TextWrapper()
-    wrapper.width = 65
-    sysprep_help = "System Preperation Tasks"
-    sysprep_help += "\n%s\n\n" % ('=' * len(sysprep_help))
-
-    while 1:
-        choices = []
-        index = 0
-        for sysprep in syspreps:
-            name, descr = image_os.sysprep_info(sysprep)
-            display_name = name.replace('-', ' ').capitalize()
-            sysprep_help += "%s\n%s\n%s\n\n" % \
-                            (display_name, '-' * len(display_name),
-                            wrapper.fill(" ".join(descr.split())))
-            enabled = 1 if sysprep.enabled else 0
-            choices.append((str(index + 1), display_name, enabled))
-            index += 1
-
-        (code, tags) = d.checklist(
-            "Please choose which system preperation tasks you would like to "
-            "run on the image. Press <Help> to see details about the system "
-            "preperation tasks.",
-            title="Run system preperation tasks", choices=choices,
-            width=70, ok_label="Run", help_button=1)
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            break
-        if code == d.DIALOG_HELP:
-            d.scrollbox(sysprep_help, width=70)
-            continue
-
-
-def customize_menu(session):
-    d = session['dialog']
-
-    default_item = "Sysprep"
-    actions = {"Sysprep": sysprep,
-               "View/Modify": modify_properties,
-               "Delete": delete_properties,
-               "Exclude": exclude_tasks}
-    while 1:
-        (code, choice) = d.menu(
-            "Choose one of the following or press <Back> to exit.",
-            width=MENU_WIDTH,
-            choices=[("Sysprep", "Run various image preperation tasks"),
-                     ("Shrink", "Shrink image"),
-                     ("View/Modify", "View/Modify image properties"),
-                     ("Delete", "Delete image properties"),
-                     ("Exclude",
-                      "Exclude various deployment tasks from running")],
-            cancel="Back",
-            default_item=default_item,
-            title="Image Customization Menu")
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            break
-        elif choice in actions:
-            default_item = choice
-            actions[choice](session)
-
-
-def main_menu(session):
-    d = session['dialog']
-    dev = session['device']
-    d.setBackgroundTitle("OS: %s, Distro: %s" % (dev.ostype, dev.distro))
-    actions = {"Customize": customize_menu,
-               "Register": kamaki_menu,
-               "Extract": extract_image}
-    default_item = "Customize"
-
-    while 1:
-        (code, choice) = d.menu(
-            "Choose one of the following or press <Exit> to exit.",
-            width=MENU_WIDTH,
-            choices=[("Customize",
-                      "Customize image and ~okeanos deployment options"),
-                     ("Register", "Register image to ~okeanos"),
-                     ("Extract", "Dump image to local file system"),
-                     ("Reset", "Reset everything and start over again"),
-                     ("Help", "Get help for using snf-image-creator")],
-            cancel="Exit", menu_height=5, height=13, default_item=default_item,
-            title="Image Creator for ~okeanos (snf-image-creator version %s)" %
-                  version)
+        disk.cleanup()
 
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            if confirm_exit(d):
-                break
-        elif choice == "Reset":
-            if confirm_reset(d):
-                d.infobox("Resetting snf-image-creator. Please wait...")
-                raise Reset
-        elif choice in actions:
-            actions[choice](session)
+    return 0
 
 
 def select_file(d, media):
@@ -611,99 +136,90 @@ def select_file(d, media):
     while 1:
         if media is not None:
             if not os.path.exists(media):
-                d.msgbox("The file you choose does not exist",
-                         width=MSGBOX_WIDTH)
+                d.msgbox("The file `%s' you choose does not exist." % media,
+                         width=SMALL_WIDTH)
             else:
                 break
 
-        (code, media) = d.fselect(root, 10, 50,
-                                 title="Please select input media")
+        (code, media) = d.fselect(root, 10, 60, extra_button=1,
+            title="Please select an input media.", extra_label="Running System")
         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
             if confirm_exit(d, "You canceled the media selection dialog box."):
                 sys.exit(0)
             else:
                 media = None
                 continue
+        elif code == d.DIALOG_EXTRA:
+            media = '/'
 
     return media
 
 
-def image_creator(d):
-    basename = os.path.basename(sys.argv[0])
-    usage = "Usage: %s [input_media]" % basename
-    if len(sys.argv) > 2:
-        sys.stderr.write("%s\n" % usage)
-        return 1
-
-    if os.geteuid() != 0:
-        raise FatalError("You must run %s as root" % basename)
-
-    media = select_file(d, sys.argv[1] if len(sys.argv) == 2 else None)
-
-    out = InitializationOutput(d)
-    disk = Disk(media, out)
-
-    def signal_handler(signum, fram):
-        out.cleanup()
-        disk.cleanup()
+def main():
 
-    signal.signal(signal.SIGINT, signal_handler)
-    try:
-        snapshot = disk.snapshot()
-        dev = disk.get_device(snapshot)
+    d = dialog.Dialog(dialog="dialog")
 
-        out.output("Collecting image metadata...")
-        metadata = dev.meta
-        dev.mount(readonly=True)
-        cls = os_cls(dev.distro, dev.ostype)
-        image_os = cls(dev.root, dev.g, out)
-        dev.umount()
-        metadata.update(image_os.meta)
-        out.success("done")
-        out.cleanup()
+    # Add extra button in dialog library
+    dialog._common_args_syntax["extra_button"] = \
+        lambda enable: dialog._simple_option("--extra-button", enable)
 
-        # Make sure the signal handler does not call out.cleanup again
-        def dummy(self):
-            pass
-        instancemethod = type(InitializationOutput.cleanup)
-        out.cleanup = instancemethod(dummy, out, InitializationOutput)
+    dialog._common_args_syntax["extra_label"] = \
+        lambda string: ("--extra-label", string)
 
-        session = {"dialog": d,
-                   "disk": disk,
-                   "snapshot": snapshot,
-                   "device": dev,
-                   "image_os": image_os,
-                   "metadata": metadata}
+    # Allow yes-no label overwriting
+    dialog._common_args_syntax["yes_label"] = \
+        lambda string: ("--yes-label", string)
 
-        main_menu(session)
-        d.infobox("Thank you for using snf-image-creator. Bye", width=53)
-    finally:
-        disk.cleanup()
+    dialog._common_args_syntax["no_label"] = \
+        lambda string: ("--no-label", string)
 
-    return 0
+    usage = "Usage: %prog [options] [<input_media>]"
+    parser = optparse.OptionParser(version=version, usage=usage)
+    parser.add_option("-l", "--logfile", type="string", dest="logfile",
+                      default=None, help="log all messages to FILE",
+                      metavar="FILE")
 
+    options, args = parser.parse_args(sys.argv[1:])
 
-def main():
+    if len(args) > 1:
+        parser.error("Wrong number of arguments")
 
-    d = dialog.Dialog(dialog="dialog")
+    d.setBackgroundTitle('snf-image-creator')
 
-    # Add extra button in dialog library
-    dialog._common_args_syntax["extra_button"] = \
-        lambda enable: dialog._simple_option("--extra-button", enable)
+    try:
+        if os.geteuid() != 0:
+            raise FatalError("You must run %s as root" %
+                             parser.get_prog_name())
 
-    dialog._common_args_syntax["extra_label"] = \
-        lambda string: ("--extra-label", string)
+        media = select_file(d, args[0] if len(args) == 1 else None)
 
-    while 1:
-        try:
+        logfile = None
+        if options.logfile is not None:
             try:
-                ret = image_creator(d)
-                sys.exit(ret)
-            except FatalError as e:
-                msg = textwrap.fill(str(e), width=70)
-                d.infobox(msg, width=70, title="Fatal Error")
-                sys.exit(1)
-        except Reset:
-            continue
+                logfile = open(options.logfile, 'w')
+            except IOError as e:
+                raise FatalError(
+                    "Unable to open logfile `%s' for writing. Reason: %s" %
+                    (options.logfile, e.strerror))
+        try:
+            log = SimpleOutput(False, logfile) if logfile is not None \
+                else Output()
+            while 1:
+                try:
+                    out = CompositeOutput([log])
+                    out.output("Starting %s v%s..." %
+                               (parser.get_prog_name(), version))
+                    ret = image_creator(d, media, out)
+                    sys.exit(ret)
+                except Reset:
+                    log.output("Resetting everything...")
+                    continue
+        finally:
+            if logfile is not None:
+                logfile.close()
+    except FatalError as e:
+        msg = textwrap.fill(str(e), width=WIDTH)
+        d.infobox(msg, width=WIDTH, title="Fatal Error")
+        sys.exit(1)
 
 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :