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

   1 # -*- coding: utf-8 -*-
   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 """This module implements the "expert" mode of the dialog-based version of
  37 snf-image-creator.
  38 """
  39
  40 import os
  41 import textwrap
  42 import StringIO
  43 import json
  44
  45 from image_creator import __version__ as version
  46 from image_creator.util import MD5, FatalError
  47 from image_creator.output.dialog import GaugeOutput, InfoBoxOutput
  48 from image_creator.kamaki_wrapper import Kamaki, ClientError
  49 from image_creator.help import get_help_file
  50 from image_creator.dialog_util import SMALL_WIDTH, WIDTH, \
  51     update_background_title, confirm_reset, confirm_exit, Reset, \
  52     extract_image, extract_metadata_string, add_cloud, edit_cloud
  53
  54 CONFIGURATION_TASKS = [
  55     ("Partition table manipulation", ["FixPartitionTable"],
  56         ["linux", "windows"]),
  57     ("File system resize",
  58         ["FilesystemResizeUnmounted", "FilesystemResizeMounted"],
  59         ["linux", "windows"]),
  60     ("Swap partition configuration", ["AddSwap"], ["linux"]),
  61     ("SSH keys removal", ["DeleteSSHKeys"], ["linux"]),
  62     ("Temporal RDP disabling", ["DisableRemoteDesktopConnections"],
  63         ["windows"]),
  64     ("SELinux relabeling at next boot", ["SELinuxAutorelabel"], ["linux"]),
  65     ("Hostname/Computer Name assignment", ["AssignHostname"],
  66         ["windows", "linux"]),
  67     ("Password change", ["ChangePassword"], ["windows", "linux"]),
  68     ("File injection", ["EnforcePersonality"], ["windows", "linux"])
  69 ]
  70
  71 SYSPREP_PARAM_MAXLEN = 20
  72
  73
  74 class MetadataMonitor(object):
  75     """Monitors image metadata chages"""
  76     def __init__(self, session, meta):
  77         self.session = session
  78         self.meta = meta
  79
  80     def __enter__(self):
  81         self.old = {}
  82         for (k, v) in self.meta.items():
  83             self.old[k] = v
  84
  85     def __exit__(self, type, value, traceback):
  86         d = self.session['dialog']
  87
  88         altered = {}
  89         added = {}
  90
  91         for (k, v) in self.meta.items():
  92             if k not in self.old:
  93                 added[k] = v
  94             elif self.old[k] != v:
  95                 altered[k] = v
  96
  97         if not (len(added) or len(altered)):
  98             return
  99
 100         msg = "The last action has changed some image properties:\n\n"
 101         if len(added):
 102             msg += "New image properties:\n"
 103             for (k, v) in added.items():
 104                 msg += '    %s: "%s"\n' % (k, v)
 105             msg += "\n"
 106         if len(altered):
 107             msg += "Updated image properties:\n"
 108             for (k, v) in altered.items():
 109                 msg += '    %s: "%s" -> "%s"\n' % (k, self.old[k], v)
 110             msg += "\n"
 111
 112         self.session['metadata'].update(added)
 113         self.session['metadata'].update(altered)
 114         d.msgbox(msg, title="Image Property Changes", width=SMALL_WIDTH)
 115
 116
 117 def upload_image(session):
 118     """Upload the image to the storage service"""
 119     d = session["dialog"]
 120     image = session['image']
 121     meta = session['metadata']
 122     size = image.size
 123
 124     if "account" not in session:
 125         d.msgbox("You need to select a valid cloud before you can upload "
 126                  "images to it", width=SMALL_WIDTH)
 127         return False
 128
 129     while 1:
 130         if 'upload' in session:
 131             init = session['upload']
 132         elif 'OS' in meta:
 133             init = "%s.diskdump" % meta['OS']
 134         else:
 135             init = ""
 136         (code, answer) = d.inputbox("Please provide a filename:", init=init,
 137                                     width=WIDTH)
 138
 139         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 140             return False
 141
 142         filename = answer.strip()
 143         if len(filename) == 0:
 144             d.msgbox("Filename cannot be empty", width=SMALL_WIDTH)
 145             continue
 146
 147         kamaki = Kamaki(session['account'], None)
 148         overwrite = []
 149         for f in (filename, "%s.md5sum" % filename, "%s.meta" % filename):
 150             if kamaki.object_exists(f):
 151                 overwrite.append(f)
 152
 153         if len(overwrite) > 0:
 154             if d.yesno("The following storage service object(s) already "
 155                        "exist(s):\n%s\nDo you want to overwrite them?" %
 156                        "\n".join(overwrite), width=WIDTH, defaultno=1):
 157                 continue
 158
 159         session['upload'] = filename
 160         break
 161
 162     gauge = GaugeOutput(d, "Image Upload", "Uploading ...")
 163     try:
 164         out = image.out
 165         out.add(gauge)
 166         kamaki.out = out
 167         try:
 168             if 'checksum' not in session:
 169                 md5 = MD5(out)
 170                 session['checksum'] = md5.compute(image.device, size)
 171
 172             try:
 173                 # Upload image file
 174                 with open(image.device, 'rb') as f:
 175                     session["pithos_uri"] = \
 176                         kamaki.upload(f, size, filename,
 177                                       "Calculating block hashes",
 178                                       "Uploading missing blocks")
 179                 # Upload md5sum file
 180                 out.output("Uploading md5sum file ...")
 181                 md5str = "%s %s\n" % (session['checksum'], filename)
 182                 kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
 183                               remote_path="%s.md5sum" % filename)
 184                 out.success("done")
 185
 186             except ClientError as e:
 187                 d.msgbox(
 188                     "Error in storage service client: %s" % e.message,
 189                     title="Storage Service Client Error", width=SMALL_WIDTH)
 190                 if 'pithos_uri' in session:
 191                     del session['pithos_uri']
 192                 return False
 193         finally:
 194             out.remove(gauge)
 195     finally:
 196         gauge.cleanup()
 197
 198     d.msgbox("Image file `%s' was successfully uploaded" % filename,
 199              width=SMALL_WIDTH)
 200
 201     return True
 202
 203
 204 def register_image(session):
 205     """Register image with the compute service"""
 206     d = session["dialog"]
 207
 208     is_public = False
 209
 210     if "account" not in session:
 211         d.msgbox("You need to select a valid cloud before you "
 212                  "can register an images with it", width=SMALL_WIDTH)
 213         return False
 214
 215     if "pithos_uri" not in session:
 216         d.msgbox("You need to upload the image to the cloud before you can "
 217                  "register it", width=SMALL_WIDTH)
 218         return False
 219
 220     while 1:
 221         (code, answer) = d.inputbox("Please provide a registration name:",
 222                                     width=WIDTH)
 223         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 224             return False
 225
 226         name = answer.strip()
 227         if len(name) == 0:
 228             d.msgbox("Registration name cannot be empty", width=SMALL_WIDTH)
 229             continue
 230
 231         ret = d.yesno("Make the image public?\\nA public image is accessible "
 232                       "by every user of the service.", defaultno=1,
 233                       width=WIDTH)
 234         if ret not in (0, 1):
 235             continue
 236
 237         is_public = True if ret == 0 else False
 238
 239         break
 240
 241     metadata = {}
 242     metadata.update(session['metadata'])
 243     if 'task_metadata' in session:
 244         for key in session['task_metadata']:
 245             metadata[key] = 'yes'
 246
 247     img_type = "public" if is_public else "private"
 248     gauge = GaugeOutput(d, "Image Registration", "Registering image ...")
 249     try:
 250         out = session['image'].out
 251         out.add(gauge)
 252         try:
 253             try:
 254                 out.output("Registering %s image with the cloud ..." %
 255                            img_type)
 256                 kamaki = Kamaki(session['account'], out)
 257                 result = kamaki.register(name, session['pithos_uri'], metadata,
 258                                          is_public)
 259                 out.success('done')
 260                 # Upload metadata file
 261                 out.output("Uploading metadata file ...")
 262                 metastring = unicode(json.dumps(result, ensure_ascii=False))
 263                 kamaki.upload(StringIO.StringIO(metastring),
 264                               size=len(metastring),
 265                               remote_path="%s.meta" % session['upload'])
 266                 out.success("done")
 267                 if is_public:
 268                     out.output("Sharing metadata and md5sum files ...")
 269                     kamaki.share("%s.meta" % session['upload'])
 270                     kamaki.share("%s.md5sum" % session['upload'])
 271                     out.success('done')
 272             except ClientError as e:
 273                 d.msgbox("Error in storage service client: %s" % e.message)
 274                 return False
 275         finally:
 276             out.remove(gauge)
 277     finally:
 278         gauge.cleanup()
 279
 280     d.msgbox("%s image `%s' was successfully registered with the cloud as `%s'"
 281              % (img_type.title(), session['upload'], name), width=SMALL_WIDTH)
 282     return True
 283
 284
 285 def modify_clouds(session):
 286     """Modify existing cloud accounts"""
 287     d = session['dialog']
 288
 289     while 1:
 290         clouds = Kamaki.get_clouds()
 291         if not len(clouds):
 292             if not add_cloud(session):
 293                 break
 294             continue
 295
 296         choices = []
 297         for (name, cloud) in clouds.items():
 298             descr = cloud['description'] if 'description' in cloud else ''
 299             choices.append((name, descr))
 300
 301         (code, choice) = d.menu(
 302             "In this menu you can edit existing cloud accounts or add new "
 303             " ones. Press <Edit> to edit an existing account or <Add> to add "
 304             " a new one. Press <Back> or hit <ESC> when done.", height=18,
 305             width=WIDTH, choices=choices, menu_height=10, ok_label="Edit",
 306             extra_button=1, extra_label="Add", cancel="Back", help_button=1,
 307             title="Clouds")
 308
 309         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 310             return True
 311         elif code == d.DIALOG_OK:  # Edit button
 312             edit_cloud(session, choice)
 313         elif code == d.DIALOG_EXTRA:  # Add button
 314             add_cloud(session)
 315
 316
 317 def delete_clouds(session):
 318     """Delete existing cloud accounts"""
 319     d = session['dialog']
 320
 321     choices = []
 322     for (name, cloud) in Kamaki.get_clouds().items():
 323         descr = cloud['description'] if 'description' in cloud else ''
 324         choices.append((name, descr, 0))
 325
 326     if len(choices) == 0:
 327         d.msgbox("No available clouds to delete!", width=SMALL_WIDTH)
 328         return True
 329
 330     (code, to_delete) = d.checklist("Choose which cloud accounts to delete:",
 331                                     choices=choices, width=WIDTH)
 332     to_delete = map(lambda x: x.strip('"'), to_delete)  # Needed for OpenSUSE
 333
 334     if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 335         return False
 336
 337     if not len(to_delete):
 338         d.msgbox("Nothing selected!", width=SMALL_WIDTH)
 339         return False
 340
 341     if not d.yesno("Are you sure you want to remove the selected cloud "
 342                    "accounts?", width=WIDTH, defaultno=1):
 343         for i in to_delete:
 344             Kamaki.remove_cloud(i)
 345             if 'cloud' in session and session['cloud'] == i:
 346                 del session['cloud']
 347                 if 'account' in session:
 348                     del session['account']
 349     else:
 350         return False
 351
 352     d.msgbox("%d cloud accounts were deleted." % len(to_delete),
 353              width=SMALL_WIDTH)
 354     return True
 355
 356
 357 def kamaki_menu(session):
 358     """Show kamaki related actions"""
 359     d = session['dialog']
 360     default_item = "Cloud"
 361
 362     if 'cloud' not in session:
 363         cloud = Kamaki.get_default_cloud_name()
 364         if cloud:
 365             session['cloud'] = cloud
 366             session['account'] = Kamaki.get_account(cloud)
 367             if not session['account']:
 368                 del session['account']
 369         else:
 370             default_item = "Add/Edit"
 371
 372     while 1:
 373         cloud = session["cloud"] if "cloud" in session else "<none>"
 374         if 'account' not in session and 'cloud' in session:
 375             cloud += " <invalid>"
 376
 377         upload = session["upload"] if "upload" in session else "<none>"
 378
 379         choices = [("Add/Edit", "Add/Edit cloud accounts"),
 380                    ("Delete", "Delete existing cloud accounts"),
 381                    ("Cloud", "Select cloud account to use: %s" % cloud),
 382                    ("Upload", "Upload image to the cloud"),
 383                    ("Register", "Register image with the cloud: %s" % upload)]
 384
 385         (code, choice) = d.menu(
 386             text="Choose one of the following or press <Back> to go back.",
 387             width=WIDTH, choices=choices, cancel="Back", height=13,
 388             menu_height=5, default_item=default_item,
 389             title="Image Registration Menu")
 390
 391         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 392             return False
 393
 394         if choice == "Add/Edit":
 395             if modify_clouds(session):
 396                 default_item = "Cloud"
 397         elif choice == "Delete":
 398             if delete_clouds(session):
 399                 if len(Kamaki.get_clouds()):
 400                     default_item = "Cloud"
 401                 else:
 402                     default_item = "Add/Edit"
 403             else:
 404                 default_item = "Delete"
 405         elif choice == "Cloud":
 406             default_item = "Cloud"
 407             clouds = Kamaki.get_clouds()
 408             if not len(clouds):
 409                 d.msgbox("No clouds available. Please add a new cloud!",
 410                          width=SMALL_WIDTH)
 411                 default_item = "Add/Edit"
 412                 continue
 413
 414             if 'cloud' not in session:
 415                 session['cloud'] = clouds.keys()[0]
 416
 417             choices = []
 418             for name, info in clouds.items():
 419                 default = 1 if session['cloud'] == name else 0
 420                 descr = info['description'] if 'description' in info else ""
 421                 choices.append((name, descr, default))
 422
 423             (code, answer) = d.radiolist("Please select a cloud:",
 424                                          width=WIDTH, choices=choices)
 425             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 426                 continue
 427             else:
 428                 session['account'] = Kamaki.get_account(answer)
 429
 430                 if session['account'] is None:  # invalid account
 431                     if not d.yesno("The cloud %s' is not valid! Would you "
 432                                    "like to edit it?" % answer, width=WIDTH):
 433                         if edit_cloud(session, answer):
 434                             session['account'] = Kamaki.get_account(answer)
 435                             Kamaki.set_default_cloud(answer)
 436
 437                 if session['account'] is not None:
 438                     session['cloud'] = answer
 439                     Kamaki.set_default_cloud(answer)
 440                     default_item = "Upload"
 441                 else:
 442                     del session['account']
 443                     del session['cloud']
 444         elif choice == "Upload":
 445             if upload_image(session):
 446                 default_item = "Register"
 447             else:
 448                 default_item = "Upload"
 449         elif choice == "Register":
 450             if register_image(session):
 451                 return True
 452             else:
 453                 default_item = "Register"
 454
 455
 456 def add_property(session):
 457     """Add a new property to the image"""
 458     d = session['dialog']
 459
 460     while 1:
 461         (code, answer) = d.inputbox("Please provide a name for a new image"
 462                                     " property:", width=WIDTH)
 463         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 464             return False
 465
 466         name = answer.strip()
 467         if len(name) == 0:
 468             d.msgbox("A property name cannot be empty", width=SMALL_WIDTH)
 469             continue
 470
 471         break
 472
 473     while 1:
 474         (code, answer) = d.inputbox("Please provide a value for image "
 475                                     "property %s" % name, width=WIDTH)
 476         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 477             return False
 478
 479         value = answer.strip()
 480         if len(value) == 0:
 481             d.msgbox("Value cannot be empty", width=SMALL_WIDTH)
 482             continue
 483
 484         break
 485
 486     session['metadata'][name] = value
 487
 488     return True
 489
 490
 491 def modify_properties(session):
 492     """Modify an existing image property"""
 493     d = session['dialog']
 494
 495     while 1:
 496         choices = []
 497         for (key, val) in session['metadata'].items():
 498             choices.append((str(key), str(val)))
 499
 500         (code, choice) = d.menu(
 501             "In this menu you can edit existing image properties or add new "
 502             "ones. Be careful! Most properties have special meaning and "
 503             "alter the image deployment behaviour. Press <HELP> to see more "
 504             "information about image properties. Press <BACK> when done.",
 505             height=18, width=WIDTH, choices=choices, menu_height=10,
 506             ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
 507             help_button=1, title="Image Properties")
 508
 509         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 510             return True
 511         # Edit button
 512         elif code == d.DIALOG_OK:
 513             (code, answer) = d.inputbox("Please provide a new value for the "
 514                                         "image property with name `%s':" %
 515                                         choice,
 516                                         init=session['metadata'][choice],
 517                                         width=WIDTH)
 518             if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 519                 value = answer.strip()
 520                 if len(value) == 0:
 521                     d.msgbox("Value cannot be empty!")
 522                     continue
 523                 else:
 524                     session['metadata'][choice] = value
 525         # ADD button
 526         elif code == d.DIALOG_EXTRA:
 527             add_property(session)
 528         elif code == 'help':
 529             help_file = get_help_file("image_properties")
 530             assert os.path.exists(help_file)
 531             d.textbox(help_file, title="Image Properties", width=70, height=40)
 532
 533
 534 def delete_properties(session):
 535     """Delete an image property"""
 536     d = session['dialog']
 537
 538     choices = []
 539     for (key, val) in session['metadata'].items():
 540         choices.append((key, "%s" % val, 0))
 541
 542     (code, to_delete) = d.checklist("Choose which properties to delete:",
 543                                     choices=choices, width=WIDTH)
 544     to_delete = map(lambda x: x.strip('"'), to_delete)  # needed for OpenSUSE
 545
 546     # If the user exits with ESC or CANCEL, the returned tag list is empty.
 547     for i in to_delete:
 548         del session['metadata'][i]
 549
 550     cnt = len(to_delete)
 551     if cnt > 0:
 552         d.msgbox("%d image properties were deleted." % cnt, width=SMALL_WIDTH)
 553         return True
 554     else:
 555         return False
 556
 557
 558 def exclude_tasks(session):
 559     """Exclude specific tasks from running during image deployment"""
 560     d = session['dialog']
 561
 562     index = 0
 563     displayed_index = 1
 564     choices = []
 565     mapping = {}
 566     if 'excluded_tasks' not in session:
 567         session['excluded_tasks'] = []
 568
 569     if -1 in session['excluded_tasks']:
 570         if not d.yesno("Image deployment configuration is disabled. "
 571                        "Do you wish to enable it?", width=SMALL_WIDTH):
 572             session['excluded_tasks'].remove(-1)
 573         else:
 574             return False
 575
 576     for (msg, task, osfamily) in CONFIGURATION_TASKS:
 577         if session['metadata']['OSFAMILY'] in osfamily:
 578             checked = 1 if index in session['excluded_tasks'] else 0
 579             choices.append((str(displayed_index), msg, checked))
 580             mapping[displayed_index] = index
 581             displayed_index += 1
 582         index += 1
 583
 584     while 1:
 585         (code, tags) = d.checklist(
 586             text="Please choose which configuration tasks you would like to "
 587                  "prevent from running during image deployment. "
 588                  "Press <No Config> to supress any configuration. "
 589                  "Press <Help> for more help on the image deployment "
 590                  "configuration tasks.",
 591             choices=choices, height=19, list_height=8, width=WIDTH,
 592             help_button=1, extra_button=1, extra_label="No Config",
 593             title="Exclude Configuration Tasks")
 594         tags = map(lambda x: x.strip('"'), tags)  # Needed for OpenSUSE
 595
 596         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 597             return False
 598         elif code == d.DIALOG_HELP:
 599             help_file = get_help_file("configuration_tasks")
 600             assert os.path.exists(help_file)
 601             d.textbox(help_file, title="Configuration Tasks",
 602                       width=70, height=40)
 603         # No Config button
 604         elif code == d.DIALOG_EXTRA:
 605             session['excluded_tasks'] = [-1]
 606             session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
 607             break
 608         elif code == d.DIALOG_OK:
 609             session['excluded_tasks'] = []
 610             for tag in tags:
 611                 session['excluded_tasks'].append(mapping[int(tag)])
 612
 613             exclude_metadata = []
 614             for task in session['excluded_tasks']:
 615                 exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
 616
 617             session['task_metadata'] = map(lambda x: "EXCLUDE_TASK_%s" % x,
 618                                            exclude_metadata)
 619             break
 620
 621     return True
 622
 623
 624 def sysprep_params(session):
 625     """Collect the needed sysprep parameters"""
 626     d = session['dialog']
 627     image = session['image']
 628
 629     available = image.os.sysprep_params
 630     needed = image.os.needed_sysprep_params
 631
 632     if len(needed) == 0:
 633         return True
 634
 635     def print_form(names, extra_button=False):
 636         """print the dialog form providing sysprep_params"""
 637         fields = []
 638         for name in names:
 639             param = needed[name]
 640             default = str(available[name]) if name in available else ""
 641             fields.append(("%s: " % param.description, default,
 642                            SYSPREP_PARAM_MAXLEN))
 643
 644         kwargs = {}
 645         if extra_button:
 646             kwargs['extra_button'] = 1
 647             kwargs['extra_label'] = "Advanced"
 648
 649         txt = "Please provide the following system preparation parameters:"
 650         return d.form(txt, height=13, width=WIDTH, form_height=len(fields),
 651                       fields=fields, **kwargs)
 652
 653     def check_params(names, values):
 654         """check if the provided sysprep parameters have leagal values"""
 655         for i in range(len(names)):
 656             param = needed[names[i]]
 657             try:
 658                 normalized = param.type(values[i])
 659                 if param.validate(normalized):
 660                     image.os.sysprep_params[names[i]] = normalized
 661                     continue
 662             except ValueError:
 663                 pass
 664
 665             d.msgbox("Invalid value for parameter: `%s'" % names[i],
 666                      width=SMALL_WIDTH)
 667             return False
 668         return True
 669
 670     simple_names = [k for k, v in needed.items() if v.default is None]
 671     advanced_names = [k for k, v in needed.items() if v.default is not None]
 672
 673     while 1:
 674         code, output = print_form(simple_names, extra_button=True)
 675
 676         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 677             return False
 678         if code == d.DIALOG_EXTRA:
 679             while 1:
 680                 code, output = print_form(advanced_names)
 681                 if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 682                     break
 683                 if check_params(advanced_names, output):
 684                     break
 685             continue
 686
 687         if check_params(simple_names, output):
 688             break
 689
 690     return True
 691
 692
 693 def sysprep(session):
 694     """Perform various system preperation tasks on the image"""
 695     d = session['dialog']
 696     image = session['image']
 697
 698     # Is the image already shrinked?
 699     if 'shrinked' in session and session['shrinked']:
 700         msg = "It seems you have shrinked the image. Running system " \
 701               "preparation tasks on a shrinked image is dangerous."
 702
 703         if d.yesno("%s\n\nDo you really want to continue?" % msg,
 704                    width=SMALL_WIDTH, defaultno=1):
 705             return
 706
 707     wrapper = textwrap.TextWrapper(width=WIDTH - 5)
 708
 709     syspreps = image.os.list_syspreps()
 710
 711     if len(syspreps) == 0:
 712         d.msgbox("No system preparation task available to run!",
 713                  title="System Preperation", width=SMALL_WIDTH)
 714         return
 715
 716     while 1:
 717         choices = []
 718         index = 0
 719
 720         help_title = "System Preperation Tasks"
 721         sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
 722
 723         for sysprep in syspreps:
 724             name, descr = image.os.sysprep_info(sysprep)
 725             display_name = name.replace('-', ' ').capitalize()
 726             sysprep_help += "%s\n" % display_name
 727             sysprep_help += "%s\n" % ('-' * len(display_name))
 728             sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
 729             enabled = 1 if sysprep.enabled else 0
 730             choices.append((str(index + 1), display_name, enabled))
 731             index += 1
 732
 733         (code, tags) = d.checklist(
 734             "Please choose which system preparation tasks you would like to "
 735             "run on the image. Press <Help> to see details about the system "
 736             "preparation tasks.", title="Run system preparation tasks",
 737             choices=choices, width=70, ok_label="Run", help_button=1)
 738         tags = map(lambda x: x.strip('"'), tags)  # Needed for OpenSUSE
 739
 740         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 741             return False
 742         elif code == d.DIALOG_HELP:
 743             d.scrollbox(sysprep_help, width=WIDTH)
 744         elif code == d.DIALOG_OK:
 745             # Enable selected syspreps and disable the rest
 746             for i in range(len(syspreps)):
 747                 if str(i + 1) in tags:
 748                     image.os.enable_sysprep(syspreps[i])
 749                 else:
 750                     image.os.disable_sysprep(syspreps[i])
 751
 752             if len([s for s in image.os.list_syspreps() if s.enabled]) == 0:
 753                 d.msgbox("No system preperation task is selected!",
 754                          title="System Preperation", width=SMALL_WIDTH)
 755                 continue
 756
 757             if not sysprep_params(session):
 758                 continue
 759
 760             infobox = InfoBoxOutput(d, "Image Configuration")
 761             try:
 762                 image.out.add(infobox)
 763                 try:
 764                     # The checksum is invalid. We have mounted the image rw
 765                     if 'checksum' in session:
 766                         del session['checksum']
 767
 768                     # Monitor the metadata changes during syspreps
 769                     with MetadataMonitor(session, image.os.meta):
 770                         try:
 771                             image.os.do_sysprep()
 772                             infobox.finalize()
 773                         except FatalError as e:
 774                             title = "System Preparation"
 775                             d.msgbox("System Preparation failed: %s" % e,
 776                                      title=title, width=SMALL_WIDTH)
 777                 finally:
 778                     image.out.remove(infobox)
 779             finally:
 780                 infobox.cleanup()
 781             break
 782     return True
 783
 784
 785 def shrink(session):
 786     """Shrink the image"""
 787     d = session['dialog']
 788     image = session['image']
 789
 790     shrinked = 'shrinked' in session and session['shrinked']
 791
 792     if shrinked:
 793         d.msgbox("The image is already shrinked!", title="Image Shrinking",
 794                  width=SMALL_WIDTH)
 795         return True
 796
 797     msg = "This operation will shrink the last partition of the image to " \
 798           "reduce the total image size. If the last partition is a swap " \
 799           "partition, then this partition is removed and the partition " \
 800           "before that is shrinked. The removed swap partition will be " \
 801           "recreated during image deployment."
 802
 803     if not d.yesno("%s\n\nDo you want to continue?" % msg, width=WIDTH,
 804                    height=12, title="Image Shrinking"):
 805         with MetadataMonitor(session, image.meta):
 806             infobox = InfoBoxOutput(d, "Image Shrinking", height=4)
 807             image.out.add(infobox)
 808             try:
 809                 image.shrink()
 810                 infobox.finalize()
 811             finally:
 812                 image.out.remove(infobox)
 813
 814         session['shrinked'] = True
 815         update_background_title(session)
 816     else:
 817         return False
 818
 819     return True
 820
 821
 822 def customization_menu(session):
 823     """Show image customization menu"""
 824     d = session['dialog']
 825
 826     choices = [("Sysprep", "Run various image preparation tasks"),
 827                ("Shrink", "Shrink image"),
 828                ("View/Modify", "View/Modify image properties"),
 829                ("Delete", "Delete image properties"),
 830                ("Exclude", "Exclude various deployment tasks from running")]
 831
 832     default_item = 0
 833
 834     actions = {"Sysprep": sysprep,
 835                "Shrink": shrink,
 836                "View/Modify": modify_properties,
 837                "Delete": delete_properties,
 838                "Exclude": exclude_tasks}
 839     while 1:
 840         (code, choice) = d.menu(
 841             text="Choose one of the following or press <Back> to exit.",
 842             width=WIDTH, choices=choices, cancel="Back", height=13,
 843             menu_height=len(choices), default_item=choices[default_item][0],
 844             title="Image Customization Menu")
 845
 846         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 847             break
 848         elif choice in actions:
 849             default_item = [entry[0] for entry in choices].index(choice)
 850             if actions[choice](session):
 851                 default_item = (default_item + 1) % len(choices)
 852
 853
 854 def main_menu(session):
 855     """Show the main menu of the program"""
 856     d = session['dialog']
 857
 858     update_background_title(session)
 859
 860     choices = [("Customize", "Customize image & cloud deployment options"),
 861                ("Register", "Register image to a cloud"),
 862                ("Extract", "Dump image to local file system"),
 863                ("Reset", "Reset everything and start over again"),
 864                ("Help", "Get help for using snf-image-creator")]
 865
 866     default_item = "Customize"
 867
 868     actions = {"Customize": customization_menu, "Register": kamaki_menu,
 869                "Extract": extract_image}
 870     while 1:
 871         (code, choice) = d.menu(
 872             text="Choose one of the following or press <Exit> to exit.",
 873             width=WIDTH, choices=choices, cancel="Exit", height=13,
 874             default_item=default_item, menu_height=len(choices),
 875             title="Image Creator for synnefo (snf-image-creator version %s)" %
 876                   version)
 877
 878         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 879             if confirm_exit(d):
 880                 break
 881         elif choice == "Reset":
 882             if confirm_reset(d):
 883                 d.infobox("Resetting snf-image-creator. Please wait ...",
 884                           width=SMALL_WIDTH)
 885                 raise Reset
 886         elif choice == "Help":
 887             d.msgbox("For help, check the online documentation:\n\nhttp://www"
 888                      ".synnefo.org/docs/snf-image-creator/latest/",
 889                      width=WIDTH, title="Help")
 890         elif choice in actions:
 891             actions[choice](session)
 892
 893 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :