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