code.grnet.gr Git - snf-image-creator/blob - image_creator/dialog_menu.py

   1 #!/usr/bin/env python
   2
   3 # Copyright 2012 GRNET S.A. All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or
   6 # without modification, are permitted provided that the following
   7 # conditions are met:
   8 #
   9 #   1. Redistributions of source code must retain the above
  10 #      copyright notice, this list of conditions and the following
  11 #      disclaimer.
  12 #
  13 #   2. Redistributions in binary form must reproduce the above
  14 #      copyright notice, this list of conditions and the following
  15 #      disclaimer in the documentation and/or other materials
  16 #      provided with the distribution.
  17 #
  18 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  19 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  21 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  22 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  25 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  28 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29 # POSSIBILITY OF SUCH DAMAGE.
  30 #
  31 # The views and conclusions contained in the software and
  32 # documentation are those of the authors and should not be
  33 # interpreted as representing official policies, either expressed
  34 # or implied, of GRNET S.A.
  35
  36 import sys
  37 import os
  38 import textwrap
  39 import StringIO
  40
  41 from image_creator import __version__ as version
  42 from image_creator.util import MD5
  43 from image_creator.output.dialog import GaugeOutput, InfoBoxOutput
  44 from image_creator.kamaki_wrapper import Kamaki, ClientError
  45 from image_creator.help import get_help_file
  46 from image_creator.dialog_util import SMALL_WIDTH, WIDTH, \
  47     update_background_title, confirm_reset, confirm_exit, Reset, \
  48     extract_image, extract_metadata_string
  49
  50 CONFIGURATION_TASKS = [
  51     ("Partition table manipulation", ["FixPartitionTable"],
  52         ["linux", "windows"]),
  53     ("File system resize",
  54         ["FilesystemResizeUnmounted", "FilesystemResizeMounted"],
  55         ["linux", "windows"]),
  56     ("Swap partition configuration", ["AddSwap"], ["linux"]),
  57     ("SSH keys removal", ["DeleteSSHKeys"], ["linux"]),
  58     ("Temporal RDP disabling", ["DisableRemoteDesktopConnections"],
  59         ["windows"]),
  60     ("SELinux relabeling at next boot", ["SELinuxAutorelabel"], ["linux"]),
  61     ("Hostname/Computer Name assignment", ["AssignHostname"],
  62         ["windows", "linux"]),
  63     ("Password change", ["ChangePassword"], ["windows", "linux"]),
  64     ("File injection", ["EnforcePersonality"], ["windows", "linux"])
  65 ]
  66
  67
  68 class metadata_monitor(object):
  69     def __init__(self, session, meta):
  70         self.session = session
  71         self.meta = meta
  72
  73     def __enter__(self):
  74         self.old = {}
  75         for (k, v) in self.meta.items():
  76             self.old[k] = v
  77
  78     def __exit__(self, type, value, traceback):
  79         d = self.session['dialog']
  80
  81         altered = {}
  82         added = {}
  83
  84         for (k, v) in self.meta.items():
  85             if k not in self.old:
  86                 added[k] = v
  87             elif self.old[k] != v:
  88                 altered[k] = v
  89
  90         if not (len(added) or len(altered)):
  91             return
  92
  93         msg = "The last action has changed some image properties:\n\n"
  94         if len(added):
  95             msg += "New image properties:\n"
  96             for (k, v) in added.items():
  97                 msg += '    %s: "%s"\n' % (k, v)
  98             msg += "\n"
  99         if len(altered):
 100             msg += "Updated image properties:\n"
 101             for (k, v) in altered.items():
 102                 msg += '    %s: "%s" -> "%s"\n' % (k, self.old[k], v)
 103             msg += "\n"
 104
 105         self.session['metadata'].update(added)
 106         self.session['metadata'].update(altered)
 107         d.msgbox(msg, title="Image Property Changes", width=SMALL_WIDTH)
 108
 109
 110 def upload_image(session):
 111     d = session["dialog"]
 112     dev = session['device']
 113     size = dev.size
 114
 115     if "account" not in session:
 116         d.msgbox("You need to provide your ~okeanos login username before you "
 117                  "can upload images to pithos+", width=SMALL_WIDTH)
 118         return False
 119
 120     if "token" not in session:
 121         d.msgbox("You need to provide your ~okeanos account authentication "
 122                  "token before you can upload images to pithos+",
 123                  width=SMALL_WIDTH)
 124         return False
 125
 126     while 1:
 127         init = session["upload"] if "upload" in session else ''
 128         (code, answer) = d.inputbox("Please provide a filename:", init=init,
 129                                     width=WIDTH)
 130
 131         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 132             return False
 133
 134         filename = answer.strip()
 135         if len(filename) == 0:
 136             d.msgbox("Filename cannot be empty", width=SMALL_WIDTH)
 137             continue
 138         session['upload'] = filename
 139         break
 140
 141     gauge = GaugeOutput(d, "Image Upload", "Uploading...")
 142     try:
 143         out = dev.out
 144         out.add(gauge)
 145         try:
 146             if 'checksum' not in session:
 147                 md5 = MD5(out)
 148                 session['checksum'] = md5.compute(session['snapshot'], size)
 149
 150             kamaki = Kamaki(session['account'], session['token'], out)
 151             try:
 152                 # Upload image file
 153                 with open(session['snapshot'], 'rb') as f:
 154                     session["pithos_uri"] = \
 155                         kamaki.upload(f, size, filename,
 156                                       "Calculating block hashes",
 157                                       "Uploading missing blocks")
 158                 # Upload metadata file
 159                 out.output("Uploading metadata file...")
 160                 metastring = extract_metadata_string(session)
 161                 kamaki.upload(StringIO.StringIO(metastring),
 162                               size=len(metastring),
 163                               remote_path="%s.meta" % filename)
 164                 out.success("done")
 165
 166                 # Upload md5sum file
 167                 out.output("Uploading md5sum file...")
 168                 md5str = "%s %s\n" % (session['checksum'], filename)
 169                 kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
 170                               remote_path="%s.md5sum" % filename)
 171                 out.success("done")
 172
 173             except ClientError as e:
 174                 d.msgbox("Error in pithos+ client: %s" % e.message,
 175                          title="Pithos+ Client Error", width=SMALL_WIDTH)
 176                 if 'pithos_uri' in session:
 177                     del session['pithos_uri']
 178                 return False
 179         finally:
 180             out.remove(gauge)
 181     finally:
 182         gauge.cleanup()
 183
 184     d.msgbox("Image file `%s' was successfully uploaded to pithos+" % filename,
 185              width=SMALL_WIDTH)
 186
 187     return True
 188
 189
 190 def register_image(session):
 191     d = session["dialog"]
 192     dev = session['device']
 193
 194     if "account" not in session:
 195         d.msgbox("You need to provide your ~okeanos login username before you "
 196                  "can register an images to cyclades",
 197                  width=SMALL_WIDTH)
 198         return False
 199
 200     if "token" not in session:
 201         d.msgbox("You need to provide your ~okeanos account authentication "
 202                  "token before you can register an images to cyclades",
 203                  width=SMALL_WIDTH)
 204         return False
 205
 206     if "pithos_uri" not in session:
 207         d.msgbox("You need to upload the image to pithos+ before you can "
 208                  "register it to cyclades", width=SMALL_WIDTH)
 209         return False
 210
 211     while 1:
 212         (code, answer) = d.inputbox("Please provide a registration name:",
 213                                     width=WIDTH)
 214         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 215             return False
 216
 217         name = answer.strip()
 218         if len(name) == 0:
 219             d.msgbox("Registration name cannot be empty", width=SMALL_WIDTH)
 220             continue
 221         break
 222
 223     metadata = {}
 224     metadata.update(session['metadata'])
 225     if 'task_metadata' in session:
 226         for key in session['task_metadata']:
 227             metadata[key] = 'yes'
 228
 229     gauge = GaugeOutput(d, "Image Registration", "Registering image...")
 230     try:
 231         out = dev.out
 232         out.add(gauge)
 233         try:
 234             out.output("Registering image with Cyclades...")
 235             try:
 236                 kamaki = Kamaki(session['account'], session['token'], out)
 237                 kamaki.register(name, session['pithos_uri'], metadata)
 238                 out.success('done')
 239             except ClientError as e:
 240                 d.msgbox("Error in pithos+ client: %s" % e.message)
 241                 return False
 242         finally:
 243             out.remove(gauge)
 244     finally:
 245         gauge.cleanup()
 246
 247     d.msgbox("Image `%s' was successfully registered with Cyclades as `%s'" %
 248              (session['upload'], name), width=SMALL_WIDTH)
 249     return True
 250
 251
 252 def kamaki_menu(session):
 253     d = session['dialog']
 254     default_item = "Account"
 255
 256     account = Kamaki.get_account()
 257     if account:
 258         session['account'] = account
 259
 260     token = Kamaki.get_token()
 261     if token:
 262         session['token'] = token
 263
 264     while 1:
 265         account = session["account"] if "account" in session else "<none>"
 266         token = session["token"] if "token" in session else "<none>"
 267         upload = session["upload"] if "upload" in session else "<none>"
 268
 269         choices = [("Account", "Change your ~okeanos username: %s" % account),
 270                    ("Token", "Change your ~okeanos token: %s" % token),
 271                    ("Upload", "Upload image to pithos+"),
 272                    ("Register", "Register the image to cyclades: %s" % upload)]
 273
 274         (code, choice) = d.menu(
 275             text="Choose one of the following or press <Back> to go back.",
 276             width=WIDTH, choices=choices, cancel="Back", height=13,
 277             menu_height=5, default_item=default_item,
 278             title="Image Registration Menu")
 279
 280         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 281             return False
 282
 283         if choice == "Account":
 284             default_item = "Account"
 285             (code, answer) = d.inputbox(
 286                 "Please provide your ~okeanos account e-mail address:",
 287                 init=session["account"] if "account" in session else '',
 288                 width=WIDTH)
 289             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 290                 continue
 291             if len(answer) == 0 and "account" in session:
 292                     del session["account"]
 293             else:
 294                 session["account"] = answer.strip()
 295                 Kamaki.save_account(session['account'])
 296                 default_item = "Token"
 297         elif choice == "Token":
 298             default_item = "Token"
 299             (code, answer) = d.inputbox(
 300                 "Please provide your ~okeanos account authetication token:",
 301                 init=session["token"] if "token" in session else '',
 302                 width=WIDTH)
 303             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 304                 continue
 305             if len(answer) == 0 and "token" in session:
 306                 del session["token"]
 307             else:
 308                 session["token"] = answer.strip()
 309                 Kamaki.save_token(session['token'])
 310                 default_item = "Upload"
 311         elif choice == "Upload":
 312             if upload_image(session):
 313                 default_item = "Register"
 314             else:
 315                 default_item = "Upload"
 316         elif choice == "Register":
 317             if register_image(session):
 318                 return True
 319             else:
 320                 default_item = "Register"
 321
 322
 323 def add_property(session):
 324     d = session['dialog']
 325
 326     while 1:
 327         (code, answer) = d.inputbox("Please provide a name for a new image"
 328                                     " property:", width=WIDTH)
 329         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 330             return False
 331
 332         name = answer.strip()
 333         if len(name) == 0:
 334             d.msgbox("A property name cannot be empty", width=SMALL_WIDTH)
 335             continue
 336
 337         break
 338
 339     while 1:
 340         (code, answer) = d.inputbox("Please provide a value for image "
 341                                     "property %s" % name, width=WIDTH)
 342         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 343             return False
 344
 345         value = answer.strip()
 346         if len(value) == 0:
 347             d.msgbox("Value cannot be empty", width=SMALL_WIDTH)
 348             continue
 349
 350         break
 351
 352     session['metadata'][name] = value
 353
 354     return True
 355
 356
 357 def modify_properties(session):
 358     d = session['dialog']
 359
 360     while 1:
 361         choices = []
 362         for (key, val) in session['metadata'].items():
 363             choices.append((str(key), str(val)))
 364
 365         (code, choice) = d.menu(
 366             "In this menu you can edit existing image properties or add new "
 367             "ones. Be careful! Most properties have special meaning and "
 368             "alter the image deployment behaviour. Press <HELP> to see more "
 369             "information about image properties. Press <BACK> when done.",
 370             height=18, width=WIDTH, choices=choices, menu_height=10,
 371             ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
 372             help_button=1, title="Image Properties")
 373
 374         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 375             return True
 376         # Edit button
 377         elif code == d.DIALOG_OK:
 378             (code, answer) = d.inputbox("Please provide a new value for the "
 379                                         "image property with name `%s':" %
 380                                         choice,
 381                                         init=session['metadata'][choice],
 382                                         width=WIDTH)
 383             if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 384                 value = answer.strip()
 385                 if len(value) == 0:
 386                     d.msgbox("Value cannot be empty!")
 387                     continue
 388                 else:
 389                     session['metadata'][choice] = value
 390         # ADD button
 391         elif code == d.DIALOG_EXTRA:
 392             add_property(session)
 393         elif code == 'help':
 394             help_file = get_help_file("image_properties")
 395             assert os.path.exists(help_file)
 396             d.textbox(help_file, title="Image Properties", width=70, height=40)
 397
 398
 399 def delete_properties(session):
 400     d = session['dialog']
 401
 402     choices = []
 403     for (key, val) in session['metadata'].items():
 404         choices.append((key, "%s" % val, 0))
 405
 406     (code, to_delete) = d.checklist("Choose which properties to delete:",
 407                                     choices=choices, width=WIDTH)
 408
 409     # If the user exits with ESC or CANCEL, the returned tag list is empty.
 410     for i in to_delete:
 411         del session['metadata'][i]
 412
 413     cnt = len(to_delete)
 414     if cnt > 0:
 415         d.msgbox("%d image properties were deleted." % cnt, width=SMALL_WIDTH)
 416         return True
 417     else:
 418         return False
 419
 420
 421 def exclude_tasks(session):
 422     d = session['dialog']
 423
 424     index = 0
 425     displayed_index = 1
 426     choices = []
 427     mapping = {}
 428     if 'excluded_tasks' not in session:
 429         session['excluded_tasks'] = []
 430
 431     if -1 in session['excluded_tasks']:
 432         if not d.yesno("Image deployment configuration is disabled. "
 433                        "Do you wish to enable it?", width=SMALL_WIDTH):
 434             session['excluded_tasks'].remove(-1)
 435         else:
 436             return False
 437
 438     for (msg, task, osfamily) in CONFIGURATION_TASKS:
 439         if session['metadata']['OSFAMILY'] in osfamily:
 440             checked = 1 if index in session['excluded_tasks'] else 0
 441             choices.append((str(displayed_index), msg, checked))
 442             mapping[displayed_index] = index
 443             displayed_index += 1
 444         index += 1
 445
 446     while 1:
 447         (code, tags) = d.checklist(
 448             text="Please choose which configuration tasks you would like to "
 449                  "prevent from running during image deployment. "
 450                  "Press <No Config> to supress any configuration. "
 451                  "Press <Help> for more help on the image deployment "
 452                  "configuration tasks.",
 453             choices=choices, height=19, list_height=8, width=WIDTH,
 454             help_button=1, extra_button=1, extra_label="No Config",
 455             title="Exclude Configuration Tasks")
 456
 457         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 458             return False
 459         elif code == d.DIALOG_HELP:
 460             help_file = get_help_file("configuration_tasks")
 461             assert os.path.exists(help_file)
 462             d.textbox(help_file, title="Configuration Tasks",
 463                       width=70, height=40)
 464         # No Config button
 465         elif code == d.DIALOG_EXTRA:
 466             session['excluded_tasks'] = [-1]
 467             session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
 468             break
 469         elif code == d.DIALOG_OK:
 470             session['excluded_tasks'] = []
 471             for tag in tags:
 472                 session['excluded_tasks'].append(mapping[int(tag)])
 473
 474             exclude_metadata = []
 475             for task in session['excluded_tasks']:
 476                 exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
 477
 478             session['task_metadata'] = map(lambda x: "EXCLUDE_TASK_%s" % x,
 479                                            exclude_metadata)
 480             break
 481
 482     return True
 483
 484
 485 def sysprep(session):
 486     d = session['dialog']
 487     image_os = session['image_os']
 488
 489     # Is the image already shrinked?
 490     if 'shrinked' in session and session['shrinked']:
 491         msg = "It seems you have shrinked the image. Running system " \
 492               "preparation tasks on a shrinked image is dangerous."
 493
 494         if d.yesno("%s\n\nDo you really want to continue?" % msg,
 495                    width=SMALL_WIDTH, defaultno=1):
 496             return
 497
 498     wrapper = textwrap.TextWrapper(width=WIDTH - 5)
 499
 500     help_title = "System Preperation Tasks"
 501     sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
 502
 503     if 'exec_syspreps' not in session:
 504         session['exec_syspreps'] = []
 505
 506     all_syspreps = image_os.list_syspreps()
 507     # Only give the user the choice between syspreps that have not ran yet
 508     syspreps = [s for s in all_syspreps if s not in session['exec_syspreps']]
 509
 510     if len(syspreps) == 0:
 511         d.msgbox("No system preparation task available to run!",
 512                  title="System Preperation", width=SMALL_WIDTH)
 513         return
 514
 515     while 1:
 516         choices = []
 517         index = 0
 518         for sysprep in syspreps:
 519             name, descr = image_os.sysprep_info(sysprep)
 520             display_name = name.replace('-', ' ').capitalize()
 521             sysprep_help += "%s\n" % display_name
 522             sysprep_help += "%s\n" % ('-' * len(display_name))
 523             sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
 524             enabled = 1 if sysprep.enabled else 0
 525             choices.append((str(index + 1), display_name, enabled))
 526             index += 1
 527
 528         (code, tags) = d.checklist(
 529             "Please choose which system preparation tasks you would like to "
 530             "run on the image. Press <Help> to see details about the system "
 531             "preparation tasks.", title="Run system preparation tasks",
 532             choices=choices, width=70, ok_label="Run", help_button=1)
 533
 534         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 535             return False
 536         elif code == d.DIALOG_HELP:
 537             d.scrollbox(sysprep_help, width=WIDTH)
 538         elif code == d.DIALOG_OK:
 539             # Enable selected syspreps and disable the rest
 540             for i in range(len(syspreps)):
 541                 if str(i + 1) in tags:
 542                     image_os.enable_sysprep(syspreps[i])
 543                     session['exec_syspreps'].append(syspreps[i])
 544                 else:
 545                     image_os.disable_sysprep(syspreps[i])
 546
 547             infobox = InfoBoxOutput(d, "Image Configuration")
 548             try:
 549                 dev = session['device']
 550                 dev.out.add(infobox)
 551                 try:
 552                     dev.mount(readonly=False)
 553                     try:
 554                         # The checksum is invalid. We have mounted the image rw
 555                         if 'checksum' in session:
 556                             del session['checksum']
 557
 558                         # Monitor the metadata changes during syspreps
 559                         with metadata_monitor(session, image_os.meta):
 560                             image_os.do_sysprep()
 561                             infobox.finalize()
 562
 563                         # Disable syspreps that have ran
 564                         for sysprep in session['exec_syspreps']:
 565                             image_os.disable_sysprep(sysprep)
 566                     finally:
 567                         dev.umount()
 568                 finally:
 569                     dev.out.remove(infobox)
 570             finally:
 571                 infobox.cleanup()
 572             break
 573     return True
 574
 575
 576 def shrink(session):
 577     d = session['dialog']
 578     dev = session['device']
 579
 580     shrinked = 'shrinked' in session and session['shrinked']
 581
 582     if shrinked:
 583         d.msgbox("The image is already shrinked!", title="Image Shrinking",
 584                  width=SMALL_WIDTH)
 585         return True
 586
 587     msg = "This operation will shrink the last partition of the image to " \
 588           "reduce the total image size. If the last partition is a swap " \
 589           "partition, then this partition is removed and the partition " \
 590           "before that is shrinked. The removed swap partition will be " \
 591           "recreated during image deployment."
 592
 593     if not d.yesno("%s\n\nDo you want to continue?" % msg, width=WIDTH,
 594                    height=12, title="Image Shrinking"):
 595         with metadata_monitor(session, dev.meta):
 596             infobox = InfoBoxOutput(d, "Image Shrinking", height=4)
 597             dev.out.add(infobox)
 598             try:
 599                 dev.shrink()
 600                 infobox.finalize()
 601             finally:
 602                 dev.out.remove(infobox)
 603
 604         session['shrinked'] = True
 605         update_background_title(session)
 606     else:
 607         return False
 608
 609     return True
 610
 611
 612 def customization_menu(session):
 613     d = session['dialog']
 614
 615     choices = [("Sysprep", "Run various image preparation tasks"),
 616                ("Shrink", "Shrink image"),
 617                ("View/Modify", "View/Modify image properties"),
 618                ("Delete", "Delete image properties"),
 619                ("Exclude", "Exclude various deployment tasks from running")]
 620
 621     default_item = 0
 622
 623     actions = {"Sysprep": sysprep,
 624                "Shrink": shrink,
 625                "View/Modify": modify_properties,
 626                "Delete": delete_properties,
 627                "Exclude": exclude_tasks}
 628     while 1:
 629         (code, choice) = d.menu(
 630             text="Choose one of the following or press <Back> to exit.",
 631             width=WIDTH, choices=choices, cancel="Back", height=13,
 632             menu_height=len(choices), default_item=choices[default_item][0],
 633             title="Image Customization Menu")
 634
 635         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 636             break
 637         elif choice in actions:
 638             default_item = [entry[0] for entry in choices].index(choice)
 639             if actions[choice](session):
 640                 default_item = (default_item + 1) % len(choices)
 641
 642
 643 def main_menu(session):
 644     d = session['dialog']
 645     dev = session['device']
 646
 647     update_background_title(session)
 648
 649     choices = [("Customize", "Customize image & ~okeanos deployment options"),
 650                ("Register", "Register image to ~okeanos"),
 651                ("Extract", "Dump image to local file system"),
 652                ("Reset", "Reset everything and start over again"),
 653                ("Help", "Get help for using snf-image-creator")]
 654
 655     default_item = "Customize"
 656
 657     actions = {"Customize": customization_menu, "Register": kamaki_menu,
 658                "Extract": extract_image}
 659     while 1:
 660         (code, choice) = d.menu(
 661             text="Choose one of the following or press <Exit> to exit.",
 662             width=WIDTH, choices=choices, cancel="Exit", height=13,
 663             default_item=default_item, menu_height=len(choices),
 664             title="Image Creator for ~okeanos (snf-image-creator version %s)" %
 665                   version)
 666
 667         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 668             if confirm_exit(d):
 669                 break
 670         elif choice == "Reset":
 671             if confirm_reset(d):
 672                 d.infobox("Resetting snf-image-creator. Please wait...",
 673                           width=SMALL_WIDTH)
 674                 raise Reset
 675         elif choice in actions:
 676             actions[choice](session)
 677
 678 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :