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     meta = session['metadata']
 114     size = dev.size
 115
 116     if "account" not in session:
 117         d.msgbox("You need to provide your ~okeanos credentials before you "
 118                  "can upload images to pithos+", width=SMALL_WIDTH)
 119         return False
 120
 121     while 1:
 122         if 'upload' in session:
 123             init = session['upload']
 124         elif 'OS' in meta:
 125             init = "%s.diskdump" % meta['OS']
 126         else:
 127             init = ""
 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'], 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     is_public = False
 195
 196     if "account" not in session:
 197         d.msgbox("You need to provide your ~okeanos credentians before you "
 198                  "can register an images to cyclades",
 199                  width=SMALL_WIDTH)
 200         return False
 201
 202     if "pithos_uri" not in session:
 203         d.msgbox("You need to upload the image to pithos+ before you can "
 204                  "register it to cyclades", width=SMALL_WIDTH)
 205         return False
 206
 207     while 1:
 208         (code, answer) = d.inputbox("Please provide a registration name:",
 209                                     width=WIDTH)
 210         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 211             return False
 212
 213         name = answer.strip()
 214         if len(name) == 0:
 215             d.msgbox("Registration name cannot be empty", width=SMALL_WIDTH)
 216             continue
 217
 218         ret = d.yesno("Make the image public?\\nA public image is accessible "
 219                       "by every user of the service.", defaultno=1,
 220                       width=WIDTH)
 221         if ret not in (0, 1):
 222             continue
 223
 224         is_public = True if ret == 0 else False
 225
 226         break
 227
 228     metadata = {}
 229     metadata.update(session['metadata'])
 230     if 'task_metadata' in session:
 231         for key in session['task_metadata']:
 232             metadata[key] = 'yes'
 233
 234     img_type = "public" if is_public else "private"
 235     gauge = GaugeOutput(d, "Image Registration", "Registering image...")
 236     try:
 237         out = dev.out
 238         out.add(gauge)
 239         try:
 240             out.output("Registering %s image with Cyclades..." % img_type)
 241             try:
 242                 kamaki = Kamaki(session['account'], out)
 243                 kamaki.register(name, session['pithos_uri'], metadata,
 244                                 is_public)
 245                 out.success('done')
 246             except ClientError as e:
 247                 d.msgbox("Error in pithos+ client: %s" % e.message)
 248                 return False
 249         finally:
 250             out.remove(gauge)
 251     finally:
 252         gauge.cleanup()
 253
 254     d.msgbox("%s image `%s' was successfully registered with Cyclades as `%s'"
 255              % (img_type.title(), session['upload'], name), width=SMALL_WIDTH)
 256     return True
 257
 258
 259 def kamaki_menu(session):
 260     d = session['dialog']
 261     default_item = "Account"
 262
 263     if 'account' not in session:
 264         token = Kamaki.get_token()
 265         if token:
 266             session['account'] = Kamaki.get_account(token)
 267             if not session['account']:
 268                 del session['account']
 269                 Kamaki.save_token('')  # The token was not valid. Remove it
 270
 271     while 1:
 272         account = session["account"]['username'] if "account" in session else \
 273             "<none>"
 274         upload = session["upload"] if "upload" in session else "<none>"
 275
 276         choices = [("Account", "Change your ~okeanos account: %s" % account),
 277                    ("Upload", "Upload image to pithos+"),
 278                    ("Register", "Register the image to cyclades: %s" % upload)]
 279
 280         (code, choice) = d.menu(
 281             text="Choose one of the following or press <Back> to go back.",
 282             width=WIDTH, choices=choices, cancel="Back", height=13,
 283             menu_height=5, default_item=default_item,
 284             title="Image Registration Menu")
 285
 286         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 287             return False
 288
 289         if choice == "Account":
 290             default_item = "Account"
 291             (code, answer) = d.inputbox(
 292                 "Please provide your ~okeanos authentication token:",
 293                 init=session["account"]['auth_token'] if "account" in session
 294                 else '', width=WIDTH)
 295             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 296                 continue
 297             if len(answer) == 0 and "account" in session:
 298                     del session["account"]
 299             else:
 300                 token = answer.strip()
 301                 session['account'] = Kamaki.get_account(token)
 302                 if session['account'] is not None:
 303                     Kamaki.save_token(token)
 304                     default_item = "Upload"
 305                 else:
 306                     del session['account']
 307                     d.msgbox("The token you provided is not valid!",
 308                              width=SMALL_WIDTH)
 309         elif choice == "Upload":
 310             if upload_image(session):
 311                 default_item = "Register"
 312             else:
 313                 default_item = "Upload"
 314         elif choice == "Register":
 315             if register_image(session):
 316                 return True
 317             else:
 318                 default_item = "Register"
 319
 320
 321 def add_property(session):
 322     d = session['dialog']
 323
 324     while 1:
 325         (code, answer) = d.inputbox("Please provide a name for a new image"
 326                                     " property:", width=WIDTH)
 327         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 328             return False
 329
 330         name = answer.strip()
 331         if len(name) == 0:
 332             d.msgbox("A property name cannot be empty", width=SMALL_WIDTH)
 333             continue
 334
 335         break
 336
 337     while 1:
 338         (code, answer) = d.inputbox("Please provide a value for image "
 339                                     "property %s" % name, width=WIDTH)
 340         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 341             return False
 342
 343         value = answer.strip()
 344         if len(value) == 0:
 345             d.msgbox("Value cannot be empty", width=SMALL_WIDTH)
 346             continue
 347
 348         break
 349
 350     session['metadata'][name] = value
 351
 352     return True
 353
 354
 355 def modify_properties(session):
 356     d = session['dialog']
 357
 358     while 1:
 359         choices = []
 360         for (key, val) in session['metadata'].items():
 361             choices.append((str(key), str(val)))
 362
 363         (code, choice) = d.menu(
 364             "In this menu you can edit existing image properties or add new "
 365             "ones. Be careful! Most properties have special meaning and "
 366             "alter the image deployment behaviour. Press <HELP> to see more "
 367             "information about image properties. Press <BACK> when done.",
 368             height=18, width=WIDTH, choices=choices, menu_height=10,
 369             ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
 370             help_button=1, title="Image Properties")
 371
 372         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 373             return True
 374         # Edit button
 375         elif code == d.DIALOG_OK:
 376             (code, answer) = d.inputbox("Please provide a new value for the "
 377                                         "image property with name `%s':" %
 378                                         choice,
 379                                         init=session['metadata'][choice],
 380                                         width=WIDTH)
 381             if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 382                 value = answer.strip()
 383                 if len(value) == 0:
 384                     d.msgbox("Value cannot be empty!")
 385                     continue
 386                 else:
 387                     session['metadata'][choice] = value
 388         # ADD button
 389         elif code == d.DIALOG_EXTRA:
 390             add_property(session)
 391         elif code == 'help':
 392             help_file = get_help_file("image_properties")
 393             assert os.path.exists(help_file)
 394             d.textbox(help_file, title="Image Properties", width=70, height=40)
 395
 396
 397 def delete_properties(session):
 398     d = session['dialog']
 399
 400     choices = []
 401     for (key, val) in session['metadata'].items():
 402         choices.append((key, "%s" % val, 0))
 403
 404     (code, to_delete) = d.checklist("Choose which properties to delete:",
 405                                     choices=choices, width=WIDTH)
 406
 407     # If the user exits with ESC or CANCEL, the returned tag list is empty.
 408     for i in to_delete:
 409         del session['metadata'][i]
 410
 411     cnt = len(to_delete)
 412     if cnt > 0:
 413         d.msgbox("%d image properties were deleted." % cnt, width=SMALL_WIDTH)
 414         return True
 415     else:
 416         return False
 417
 418
 419 def exclude_tasks(session):
 420     d = session['dialog']
 421
 422     index = 0
 423     displayed_index = 1
 424     choices = []
 425     mapping = {}
 426     if 'excluded_tasks' not in session:
 427         session['excluded_tasks'] = []
 428
 429     if -1 in session['excluded_tasks']:
 430         if not d.yesno("Image deployment configuration is disabled. "
 431                        "Do you wish to enable it?", width=SMALL_WIDTH):
 432             session['excluded_tasks'].remove(-1)
 433         else:
 434             return False
 435
 436     for (msg, task, osfamily) in CONFIGURATION_TASKS:
 437         if session['metadata']['OSFAMILY'] in osfamily:
 438             checked = 1 if index in session['excluded_tasks'] else 0
 439             choices.append((str(displayed_index), msg, checked))
 440             mapping[displayed_index] = index
 441             displayed_index += 1
 442         index += 1
 443
 444     while 1:
 445         (code, tags) = d.checklist(
 446             text="Please choose which configuration tasks you would like to "
 447                  "prevent from running during image deployment. "
 448                  "Press <No Config> to supress any configuration. "
 449                  "Press <Help> for more help on the image deployment "
 450                  "configuration tasks.",
 451             choices=choices, height=19, list_height=8, width=WIDTH,
 452             help_button=1, extra_button=1, extra_label="No Config",
 453             title="Exclude Configuration Tasks")
 454
 455         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 456             return False
 457         elif code == d.DIALOG_HELP:
 458             help_file = get_help_file("configuration_tasks")
 459             assert os.path.exists(help_file)
 460             d.textbox(help_file, title="Configuration Tasks",
 461                       width=70, height=40)
 462         # No Config button
 463         elif code == d.DIALOG_EXTRA:
 464             session['excluded_tasks'] = [-1]
 465             session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
 466             break
 467         elif code == d.DIALOG_OK:
 468             session['excluded_tasks'] = []
 469             for tag in tags:
 470                 session['excluded_tasks'].append(mapping[int(tag)])
 471
 472             exclude_metadata = []
 473             for task in session['excluded_tasks']:
 474                 exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
 475
 476             session['task_metadata'] = map(lambda x: "EXCLUDE_TASK_%s" % x,
 477                                            exclude_metadata)
 478             break
 479
 480     return True
 481
 482
 483 def sysprep(session):
 484     d = session['dialog']
 485     image_os = session['image_os']
 486
 487     # Is the image already shrinked?
 488     if 'shrinked' in session and session['shrinked']:
 489         msg = "It seems you have shrinked the image. Running system " \
 490               "preparation tasks on a shrinked image is dangerous."
 491
 492         if d.yesno("%s\n\nDo you really want to continue?" % msg,
 493                    width=SMALL_WIDTH, defaultno=1):
 494             return
 495
 496     wrapper = textwrap.TextWrapper(width=WIDTH - 5)
 497
 498     help_title = "System Preperation Tasks"
 499     sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
 500
 501     if 'exec_syspreps' not in session:
 502         session['exec_syspreps'] = []
 503
 504     all_syspreps = image_os.list_syspreps()
 505     # Only give the user the choice between syspreps that have not ran yet
 506     syspreps = [s for s in all_syspreps if s not in session['exec_syspreps']]
 507
 508     if len(syspreps) == 0:
 509         d.msgbox("No system preparation task available to run!",
 510                  title="System Preperation", width=SMALL_WIDTH)
 511         return
 512
 513     while 1:
 514         choices = []
 515         index = 0
 516         for sysprep in syspreps:
 517             name, descr = image_os.sysprep_info(sysprep)
 518             display_name = name.replace('-', ' ').capitalize()
 519             sysprep_help += "%s\n" % display_name
 520             sysprep_help += "%s\n" % ('-' * len(display_name))
 521             sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
 522             enabled = 1 if sysprep.enabled else 0
 523             choices.append((str(index + 1), display_name, enabled))
 524             index += 1
 525
 526         (code, tags) = d.checklist(
 527             "Please choose which system preparation tasks you would like to "
 528             "run on the image. Press <Help> to see details about the system "
 529             "preparation tasks.", title="Run system preparation tasks",
 530             choices=choices, width=70, ok_label="Run", help_button=1)
 531
 532         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 533             return False
 534         elif code == d.DIALOG_HELP:
 535             d.scrollbox(sysprep_help, width=WIDTH)
 536         elif code == d.DIALOG_OK:
 537             # Enable selected syspreps and disable the rest
 538             for i in range(len(syspreps)):
 539                 if str(i + 1) in tags:
 540                     image_os.enable_sysprep(syspreps[i])
 541                     session['exec_syspreps'].append(syspreps[i])
 542                 else:
 543                     image_os.disable_sysprep(syspreps[i])
 544
 545             infobox = InfoBoxOutput(d, "Image Configuration")
 546             try:
 547                 dev = session['device']
 548                 dev.out.add(infobox)
 549                 try:
 550                     dev.mount(readonly=False)
 551                     try:
 552                         # The checksum is invalid. We have mounted the image rw
 553                         if 'checksum' in session:
 554                             del session['checksum']
 555
 556                         # Monitor the metadata changes during syspreps
 557                         with metadata_monitor(session, image_os.meta):
 558                             image_os.do_sysprep()
 559                             infobox.finalize()
 560
 561                         # Disable syspreps that have ran
 562                         for sysprep in session['exec_syspreps']:
 563                             image_os.disable_sysprep(sysprep)
 564                     finally:
 565                         dev.umount()
 566                 finally:
 567                     dev.out.remove(infobox)
 568             finally:
 569                 infobox.cleanup()
 570             break
 571     return True
 572
 573
 574 def shrink(session):
 575     d = session['dialog']
 576     dev = session['device']
 577
 578     shrinked = 'shrinked' in session and session['shrinked']
 579
 580     if shrinked:
 581         d.msgbox("The image is already shrinked!", title="Image Shrinking",
 582                  width=SMALL_WIDTH)
 583         return True
 584
 585     msg = "This operation will shrink the last partition of the image to " \
 586           "reduce the total image size. If the last partition is a swap " \
 587           "partition, then this partition is removed and the partition " \
 588           "before that is shrinked. The removed swap partition will be " \
 589           "recreated during image deployment."
 590
 591     if not d.yesno("%s\n\nDo you want to continue?" % msg, width=WIDTH,
 592                    height=12, title="Image Shrinking"):
 593         with metadata_monitor(session, dev.meta):
 594             infobox = InfoBoxOutput(d, "Image Shrinking", height=4)
 595             dev.out.add(infobox)
 596             try:
 597                 dev.shrink()
 598                 infobox.finalize()
 599             finally:
 600                 dev.out.remove(infobox)
 601
 602         session['shrinked'] = True
 603         update_background_title(session)
 604     else:
 605         return False
 606
 607     return True
 608
 609
 610 def customization_menu(session):
 611     d = session['dialog']
 612
 613     choices = [("Sysprep", "Run various image preparation tasks"),
 614                ("Shrink", "Shrink image"),
 615                ("View/Modify", "View/Modify image properties"),
 616                ("Delete", "Delete image properties"),
 617                ("Exclude", "Exclude various deployment tasks from running")]
 618
 619     default_item = 0
 620
 621     actions = {"Sysprep": sysprep,
 622                "Shrink": shrink,
 623                "View/Modify": modify_properties,
 624                "Delete": delete_properties,
 625                "Exclude": exclude_tasks}
 626     while 1:
 627         (code, choice) = d.menu(
 628             text="Choose one of the following or press <Back> to exit.",
 629             width=WIDTH, choices=choices, cancel="Back", height=13,
 630             menu_height=len(choices), default_item=choices[default_item][0],
 631             title="Image Customization Menu")
 632
 633         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 634             break
 635         elif choice in actions:
 636             default_item = [entry[0] for entry in choices].index(choice)
 637             if actions[choice](session):
 638                 default_item = (default_item + 1) % len(choices)
 639
 640
 641 def main_menu(session):
 642     d = session['dialog']
 643     dev = session['device']
 644
 645     update_background_title(session)
 646
 647     choices = [("Customize", "Customize image & ~okeanos deployment options"),
 648                ("Register", "Register image to ~okeanos"),
 649                ("Extract", "Dump image to local file system"),
 650                ("Reset", "Reset everything and start over again"),
 651                ("Help", "Get help for using snf-image-creator")]
 652
 653     default_item = "Customize"
 654
 655     actions = {"Customize": customization_menu, "Register": kamaki_menu,
 656                "Extract": extract_image}
 657     while 1:
 658         (code, choice) = d.menu(
 659             text="Choose one of the following or press <Exit> to exit.",
 660             width=WIDTH, choices=choices, cancel="Exit", height=13,
 661             default_item=default_item, menu_height=len(choices),
 662             title="Image Creator for ~okeanos (snf-image-creator version %s)" %
 663                   version)
 664
 665         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 666             if confirm_exit(d):
 667                 break
 668         elif choice == "Reset":
 669             if confirm_reset(d):
 670                 d.infobox("Resetting snf-image-creator. Please wait...",
 671                           width=SMALL_WIDTH)
 672                 raise Reset
 673         elif choice in actions:
 674             actions[choice](session)
 675
 676 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :