code.grnet.gr Git - snf-image-creator/blob - image_creator/dialog_main.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 dialog
  37 import sys
  38 import os
  39 import textwrap
  40 import signal
  41 import StringIO
  42
  43 from image_creator import __version__ as version
  44 from image_creator.util import FatalError, MD5
  45 from image_creator.output.dialog import GaugeOutput, InfoBoxOutput
  46 from image_creator.disk import Disk
  47 from image_creator.os_type import os_cls
  48 from image_creator.kamaki_wrapper import Kamaki, ClientError
  49 from image_creator.help import get_help_file
  50
  51 MSGBOX_WIDTH = 60
  52 YESNO_WIDTH = 50
  53 MENU_WIDTH = 70
  54 INPUTBOX_WIDTH = 70
  55 CHECKBOX_WIDTH = 70
  56 HELP_WIDTH = 70
  57
  58 CONFIGURATION_TASKS = [
  59  ("Partition table manipulation", ["FixPartitionTable"],
  60   ["linux", "windows"]),
  61  ("File system resize",
  62   ["FilesystemResizeUnmounted", "FilesystemResizeMounted"],
  63   ["linux", "windows"]),
  64  ("Swap partition configuration", ["AddSwap"], ["linux"]),
  65  ("SSH keys removal", ["DeleteSSHKeys"], ["linux"]),
  66  ("Temporal RDP disabling", ["DisableRemoteDesktopConnections"], ["windows"]),
  67  ("SELinux relabeling at next boot", ["SELinuxAutorelabel"],
  68   ["linux"]),
  69  ("Hostname/Computer Name assignment", ["AssignHostname"],
  70   ["windows", "linux"]),
  71  ("Password change", ["ChangePassword"], ["windows", "linux"]),
  72  ("File injection", ["EnforcePersonality"], ["windows", "linux"])
  73 ]
  74
  75
  76 class Reset(Exception):
  77     pass
  78
  79
  80 def confirm_exit(d, msg=''):
  81     return not d.yesno("%s Do you want to exit?" % msg, width=YESNO_WIDTH)
  82
  83
  84 def confirm_reset(d):
  85     return not d.yesno(
  86         "Are you sure you want to reset everything?",
  87         width=YESNO_WIDTH)
  88
  89
  90 def update_background_title(session):
  91     d = session['dialog']
  92     dev = session['device']
  93
  94     MB = 2 ** 20
  95
  96     size = (dev.meta['SIZE'] + MB - 1) // MB
  97     title = "OS: %s, Distro: %s, Size: %dMB" % (dev.ostype, dev.distro, size)
  98
  99     d.setBackgroundTitle(title)
 100
 101
 102 def extract_image(session):
 103     d = session['dialog']
 104     dir = os.getcwd()
 105     while 1:
 106         if dir and dir[-1] != os.sep:
 107             dir = dir + os.sep
 108
 109         (code, path) = d.fselect(dir, 10, 50, title="Save image as...")
 110         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 111             return False
 112
 113         if os.path.isdir(path):
 114             dir = path
 115             continue
 116
 117         if os.path.isdir("%s.meta" % path):
 118             d.msgbox("Can't overwrite directory `%s.meta'" % path,
 119                      width=MSGBOX_WIDTH)
 120             continue
 121
 122         if os.path.isdir("%s.md5sum" % path):
 123             d.msgbox("Can't overwrite directory `%s.md5sum'" % path,
 124                      width=MSGBOX_WIDTH)
 125             continue
 126
 127         basedir = os.path.dirname(path)
 128         name = os.path.basename(path)
 129         if not os.path.exists(basedir):
 130             d.msgbox("Directory `%s' does not exist" % basedir,
 131                      width=MSGBOX_WIDTH)
 132             continue
 133
 134         dir = basedir
 135         if len(name) == 0:
 136             continue
 137
 138         files = ["%s%s" % (path, ext) for ext in ('', '.meta', '.md5sum')]
 139         overwrite = filter(os.path.exists, files)
 140
 141         if len(overwrite) > 0:
 142             if d.yesno("The following file(s) exist:\n"
 143                         "%s\nDo you want to overwrite them?" %
 144                         "\n".join(overwrite), width=YESNO_WIDTH):
 145                 continue
 146
 147         out = GaugeOutput(d, "Image Extraction", "Extracting image...")
 148         try:
 149             dev = session['device']
 150             if "checksum" not in session:
 151                 size = dev.meta['SIZE']
 152                 md5 = MD5(out)
 153                 session['checksum'] = md5.compute(session['snapshot'], size)
 154
 155             # Extract image file
 156             dev.out = out
 157             dev.dump(path)
 158
 159             # Extract metadata file
 160             out.output("Extracting metadata file...")
 161             metastring = '\n'.join(
 162                 ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()])
 163             metastring += '\n'
 164             with open('%s.meta' % path, 'w') as f:
 165                 f.write(metastring)
 166             out.success('done')
 167
 168             # Extract md5sum file
 169             out.output("Extracting md5sum file...")
 170             md5str = "%s %s\n" % (session['checksum'], name)
 171             with open('%s.md5sum' % path, 'w') as f:
 172                 f.write(md5str)
 173             out.success("done")
 174
 175         finally:
 176             out.cleanup()
 177         d.msgbox("Image file `%s' was successfully extracted!" % path,
 178                  width=MSGBOX_WIDTH)
 179         break
 180
 181     return True
 182
 183
 184 def upload_image(session):
 185     d = session["dialog"]
 186     size = session['device'].meta['SIZE']
 187
 188     if "account" not in session:
 189         d.msgbox("You need to provide your ~okeanos login username before you "
 190                  "can upload images to pithos+", width=MSGBOX_WIDTH)
 191         return False
 192
 193     if "token" not in session:
 194         d.msgbox("You need to provide your ~okeanos account authentication "
 195                  "token before you can upload images to pithos+",
 196                  width=MSGBOX_WIDTH)
 197         return False
 198
 199     while 1:
 200         init = session["upload"] if "upload" in session else ''
 201         (code, answer) = d.inputbox("Please provide a filename:", init=init,
 202                                     width=INPUTBOX_WIDTH)
 203
 204         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 205             return False
 206
 207         filename = answer.strip()
 208         if len(filename) == 0:
 209             d.msgbox("Filename cannot be empty", width=MSGBOX_WIDTH)
 210             continue
 211
 212         break
 213
 214     out = GaugeOutput(d, "Image Upload", "Uploading...")
 215     if 'checksum' not in session:
 216         md5 = MD5(out)
 217         session['checksum'] = md5.compute(session['snapshot'], size)
 218     try:
 219         kamaki = Kamaki(session['account'], session['token'], out)
 220         try:
 221             # Upload image file
 222             with open(session['snapshot'], 'rb') as f:
 223                 session["upload"] = kamaki.upload(f, size, filename,
 224                                                   "Calculating block hashes",
 225                                                   "Uploading missing blocks")
 226             # Upload metadata file
 227             out.output("Uploading metadata file...")
 228             metastring = '\n'.join(
 229                 ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()])
 230             metastring += '\n'
 231             kamaki.upload(StringIO.StringIO(metastring), size=len(metastring),
 232                           remote_path="%s.meta" % filename)
 233             out.success("done")
 234
 235             # Upload md5sum file
 236             out.output("Uploading md5sum file...")
 237             md5str = "%s %s\n" % (session['checksum'], filename)
 238             kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
 239                           remote_path="%s.md5sum" % filename)
 240             out.success("done")
 241
 242         except ClientError as e:
 243             d.msgbox("Error in pithos+ client: %s" % e.message,
 244                      title="Pithos+ Client Error", width=MSGBOX_WIDTH)
 245             if 'upload' in session:
 246                 del session['upload']
 247             return False
 248     finally:
 249         out.cleanup()
 250
 251     d.msgbox("Image file `%s' was successfully uploaded to pithos+" % filename,
 252              width=MSGBOX_WIDTH)
 253
 254     return True
 255
 256
 257 def register_image(session):
 258     d = session["dialog"]
 259
 260     if "account" not in session:
 261         d.msgbox("You need to provide your ~okeanos login username before you "
 262                  "can register an images to cyclades",
 263                  width=MSGBOX_WIDTH)
 264         return False
 265
 266     if "token" not in session:
 267         d.msgbox("You need to provide your ~okeanos account authentication "
 268                  "token before you can register an images to cyclades",
 269                  width=MSGBOX_WIDTH)
 270         return False
 271
 272     if "upload" not in session:
 273         d.msgbox("You need to have an image uploaded to pithos+ before you "
 274                  "can register it to cyclades",
 275                  width=MSGBOX_WIDTH)
 276         return False
 277
 278     while 1:
 279         (code, answer) = d.inputbox("Please provide a registration name:"
 280                                 " be registered:", width=INPUTBOX_WIDTH)
 281         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 282             return False
 283
 284         name = answer.strip()
 285         if len(name) == 0:
 286             d.msgbox("Registration name cannot be empty", width=MSGBOX_WIDTH)
 287             continue
 288         break
 289
 290     out = GaugeOutput(d, "Image Registration", "Registrating image...")
 291     try:
 292         out.output("Registring image to cyclades...")
 293         try:
 294             kamaki = Kamaki(session['account'], session['token'], out)
 295             kamaki.register(name, session['upload'], session['metadata'])
 296             out.success('done')
 297         except ClientError as e:
 298             d.msgbox("Error in pithos+ client: %s" % e.message)
 299             return False
 300     finally:
 301         out.cleanup()
 302
 303     d.msgbox("Image `%s' was successfully registered to cyclades as `%s'" %
 304              (session['upload'], name), width=MSGBOX_WIDTH)
 305     return True
 306
 307
 308 def kamaki_menu(session):
 309     d = session['dialog']
 310     default_item = "Account"
 311     while 1:
 312         account = session["account"] if "account" in session else "<none>"
 313         token = session["token"] if "token" in session else "<none>"
 314         upload = session["upload"] if "upload" in session else "<none>"
 315
 316         choices = [("Account", "Change your ~okeanos username: %s" % account),
 317                    ("Token", "Change your ~okeanos token: %s" % token),
 318                    ("Upload", "Upload image to pithos+"),
 319                    ("Register", "Register image to cyclades: %s" % upload)]
 320
 321         (code, choice) = d.menu(
 322             text="Choose one of the following or press <Back> to go back.",
 323             width=MENU_WIDTH, choices=choices, cancel="Back", help_button=1,
 324             default_item=default_item, title="Image Registration Menu")
 325
 326         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 327             return False
 328
 329         if choice == "Account":
 330             default_item = "Account"
 331             (code, answer) = d.inputbox(
 332                 "Please provide your ~okeanos account e-mail address:",
 333                 init=session["account"] if "account" in session else '',
 334                 width=70)
 335             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 336                 continue
 337             if len(answer) == 0 and "account" in session:
 338                     del session["account"]
 339             else:
 340                 session["account"] = answer.strip()
 341                 default_item = "Token"
 342         elif choice == "Token":
 343             default_item = "Token"
 344             (code, answer) = d.inputbox(
 345                 "Please provide your ~okeanos account authetication token:",
 346                 init=session["token"] if "token" in session else '',
 347                 width=70)
 348             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 349                 continue
 350             if len(answer) == 0 and "token" in session:
 351                 del session["token"]
 352             else:
 353                 session["token"] = answer.strip()
 354                 default_item = "Upload"
 355         elif choice == "Upload":
 356             if upload_image(session):
 357                 default_item = "Register"
 358             else:
 359                 default_item = "Upload"
 360         elif choice == "Register":
 361             if register_image(session):
 362                 return True
 363             else:
 364                 default_item = "Register"
 365
 366
 367 def add_property(session):
 368     d = session['dialog']
 369
 370     while 1:
 371         (code, answer) = d.inputbox("Please provide a name for a new image"
 372                                     " property:", width=INPUTBOX_WIDTH)
 373         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 374             return False
 375
 376         name = answer.strip()
 377         if len(name) == 0:
 378             d.msgbox("A property name cannot be empty", width=MSGBOX_WIDTH)
 379             continue
 380
 381         break
 382
 383     while 1:
 384         (code, answer) = d.inputbox("Please provide a value for image "
 385                                    "property %s" % name, width=INPUTBOX_WIDTH)
 386         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 387             return False
 388
 389         value = answer.strip()
 390         if len(value) == 0:
 391             d.msgbox("Value cannot be empty", width=MSGBOX_WIDTH)
 392             continue
 393
 394         break
 395
 396     session['metadata'][name] = value
 397
 398     return True
 399
 400
 401 def modify_properties(session):
 402     d = session['dialog']
 403
 404     while 1:
 405         choices = []
 406         for (key, val) in session['metadata'].items():
 407             choices.append((str(key), str(val)))
 408
 409         (code, choice) = d.menu(
 410             "In this menu you can edit existing image properties or add new "
 411             "ones. Be carefull! Most properties have special meaning and "
 412             "alter the image deployment behaviour. Press <HELP> to see more "
 413             "information about image properties. Press <BACK> when done.",
 414             height=18, width=MENU_WIDTH, choices=choices, menu_height=10,
 415             ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
 416             help_button=1, title="Image Metadata")
 417
 418         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 419             break
 420         # Edit button
 421         elif code == d.DIALOG_OK:
 422             (code, answer) = d.inputbox("Please provide a new value for "
 423                     "the image property with name `%s':" % choice,
 424                     init=session['metadata'][choice], width=INPUTBOX_WIDTH)
 425             if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 426                 value = answer.strip()
 427                 if len(value) == 0:
 428                     d.msgbox("Value cannot be empty!")
 429                     continue
 430                 else:
 431                     session['metadata'][choice] = value
 432         # ADD button
 433         elif code == d.DIALOG_EXTRA:
 434             add_property(session)
 435
 436
 437 def delete_properties(session):
 438     d = session['dialog']
 439
 440     choices = []
 441     for (key, val) in session['metadata'].items():
 442         choices.append((key, "%s" % val, 0))
 443
 444     (code, to_delete) = d.checklist("Choose which properties to delete:",
 445                                     choices=choices, width=CHECKBOX_WIDTH)
 446
 447     # If the user exits with ESC or CANCEL, the returned tag list is empty.
 448     for i in to_delete:
 449         del session['metadata'][i]
 450
 451     cnt = len(to_delete)
 452     if cnt > 0:
 453         d.msgbox("%d image properties were deleted." % cnt, width=MSGBOX_WIDTH)
 454
 455
 456 def exclude_tasks(session):
 457     d = session['dialog']
 458
 459     index = 0
 460     displayed_index = 1
 461     choices = []
 462     mapping = {}
 463     if 'excluded_tasks' not in session:
 464         session['excluded_tasks'] = []
 465
 466     if -1 in session['excluded_tasks']:
 467         if not d.yesno("Image deployment configuration is disabled. "
 468                        "Do you wish to enable it?", width=YESNO_WIDTH):
 469             session['excluded_tasks'].remove(-1)
 470         else:
 471             return
 472
 473     for (msg, task, osfamily) in CONFIGURATION_TASKS:
 474         if session['metadata']['OSFAMILY'] in osfamily:
 475             checked = 1 if index in session['excluded_tasks'] else 0
 476             choices.append((str(displayed_index), msg, checked))
 477             mapping[displayed_index] = index
 478             displayed_index += 1
 479         index += 1
 480
 481     while 1:
 482         (code, tags) = d.checklist(
 483             text="Please choose which configuration tasks you would like to "
 484                  "prevent from running during image deployment. "
 485                  "Press <No Config> to supress any configuration. "
 486                  "Press <Help> for more help on the image deployment "
 487                  "configuration tasks.",
 488             choices=choices, height=19, list_height=8, width=CHECKBOX_WIDTH,
 489             help_button=1, extra_button=1, extra_label="No Config",
 490             title="Exclude Configuration Tasks")
 491
 492         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 493             break
 494         elif code == d.DIALOG_HELP:
 495             help_file = get_help_file("configuration_tasks")
 496             assert os.path.exists(help_file)
 497             d.textbox(help_file, title="Configuration Tasks",
 498                       width=70, height=40)
 499         # No Config button
 500         elif code == d.DIALOG_EXTRA:
 501             session['excluded_tasks'] = [-1]
 502             session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
 503             break
 504         elif code == d.DIALOG_OK:
 505             session['excluded_tasks'] = []
 506             for tag in tags:
 507                 session['excluded_tasks'].append(mapping[int(tag)])
 508
 509             exclude_metadata = []
 510             for task in session['excluded_tasks']:
 511                 exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
 512
 513             session['task_metadata'] = \
 514                         map(lambda x: "EXCLUDE_TASK_%s" % x, exclude_metadata)
 515             break
 516
 517
 518 def sysprep(session):
 519     d = session['dialog']
 520     image_os = session['image_os']
 521
 522     wrapper = textwrap.TextWrapper(width=65)
 523
 524     help_title = "System Preperation Tasks"
 525     sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
 526
 527     if 'exec_syspreps' not in session:
 528         session['exec_syspreps'] = []
 529
 530     all_syspreps = image_os.list_syspreps()
 531     # Only give the user the choice between syspreps that have not ran yet
 532     syspreps = [s for s in all_syspreps if s not in session['exec_syspreps']]
 533
 534     while 1:
 535         choices = []
 536         index = 0
 537         for sysprep in syspreps:
 538             name, descr = image_os.sysprep_info(sysprep)
 539             display_name = name.replace('-', ' ').capitalize()
 540             sysprep_help += "%s\n" % display_name
 541             sysprep_help += "%s\n" % ('-' * len(display_name))
 542             sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
 543             enabled = 1 if sysprep.enabled else 0
 544             choices.append((str(index + 1), display_name, enabled))
 545             index += 1
 546
 547         (code, tags) = d.checklist(
 548             "Please choose which system preperation tasks you would like to "
 549             "run on the image. Press <Help> to see details about the system "
 550             "preperation tasks.", title="Run system preperation tasks",
 551             choices=choices, width=70, ok_label="Run", help_button=1)
 552
 553         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 554             break
 555         elif code == d.DIALOG_HELP:
 556             d.scrollbox(sysprep_help, width=HELP_WIDTH)
 557         elif code == d.DIALOG_OK:
 558             # Enable selected syspreps and disable the rest
 559             for i in range(len(syspreps)):
 560                 if str(i + 1) in tags:
 561                     image_os.enable_sysprep(syspreps[i])
 562                     session['exec_syspreps'].append(syspreps[i])
 563                 else:
 564                     image_os.disable_sysprep(syspreps[i])
 565
 566             out = InfoBoxOutput(d, "Image Configuration")
 567             try:
 568                 dev = session['device']
 569                 dev.out = out
 570                 dev.mount(readonly=False)
 571                 try:
 572                     # The checksum is invalid. We have mounted the image rw
 573                     if 'checksum' in session:
 574                         del session['checksum']
 575
 576                     image_os.out = out
 577                     image_os.do_sysprep()
 578
 579                     # Disable syspreps that have ran
 580                     for sysprep in session['exec_syspreps']:
 581                         image_os.disable_sysprep(sysprep)
 582
 583                     image_os.out.finalize()
 584                 finally:
 585                     dev.umount()
 586             finally:
 587                 out.cleanup()
 588             break
 589
 590
 591 def customize_menu(session):
 592     d = session['dialog']
 593
 594     choices = [("Sysprep", "Run various image preperation tasks"),
 595                ("Shrink", "Shrink image"),
 596                ("View/Modify", "View/Modify image properties"),
 597                ("Delete", "Delete image properties"),
 598                ("Exclude", "Exclude various deployment tasks from running")]
 599
 600     default_item = "Sysprep"
 601
 602     actions = {"Sysprep": sysprep,
 603                "View/Modify": modify_properties,
 604                "Delete": delete_properties,
 605                "Exclude": exclude_tasks}
 606     while 1:
 607         (code, choice) = d.menu(
 608             text="Choose one of the following or press <Back> to exit.",
 609             width=MENU_WIDTH, choices=choices, cancel="Back", height=13,
 610             menu_height=len(choices), default_item=default_item,
 611             title="Image Customization Menu")
 612
 613         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 614             break
 615         elif choice in actions:
 616             default_item = choice
 617             actions[choice](session)
 618
 619
 620 def main_menu(session):
 621     d = session['dialog']
 622     dev = session['device']
 623
 624     update_background_title(session)
 625
 626     choices = [("Customize", "Customize image & ~okeanos deployment options"),
 627                ("Register", "Register image to ~okeanos"),
 628                ("Extract", "Dump image to local file system"),
 629                ("Reset", "Reset everything and start over again"),
 630                ("Help", "Get help for using snf-image-creator")]
 631
 632     default_item = "Customize"
 633
 634     actions = {"Customize": customize_menu, "Register": kamaki_menu,
 635                "Extract": extract_image}
 636     while 1:
 637         (code, choice) = d.menu(
 638             text="Choose one of the following or press <Exit> to exit.",
 639             width=MENU_WIDTH, choices=choices, cancel="Exit", height=13,
 640             default_item=default_item, menu_height=len(choices),
 641             title="Image Creator for ~okeanos (snf-image-creator version %s)" %
 642                   version)
 643
 644         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 645             if confirm_exit(d):
 646                 break
 647         elif choice == "Reset":
 648             if confirm_reset(d):
 649                 d.infobox("Resetting snf-image-creator. Please wait...")
 650                 raise Reset
 651         elif choice in actions:
 652             actions[choice](session)
 653
 654
 655 def select_file(d, media):
 656     root = os.sep
 657     while 1:
 658         if media is not None:
 659             if not os.path.exists(media):
 660                 d.msgbox("The file you choose does not exist",
 661                          width=MSGBOX_WIDTH)
 662             else:
 663                 break
 664
 665         (code, media) = d.fselect(root, 10, 50,
 666                                  title="Please select input media")
 667         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 668             if confirm_exit(d, "You canceled the media selection dialog box."):
 669                 sys.exit(0)
 670             else:
 671                 media = None
 672                 continue
 673
 674     return media
 675
 676
 677 def image_creator(d):
 678     basename = os.path.basename(sys.argv[0])
 679     usage = "Usage: %s [input_media]" % basename
 680     if len(sys.argv) > 2:
 681         sys.stderr.write("%s\n" % usage)
 682         return 1
 683
 684     if os.geteuid() != 0:
 685         raise FatalError("You must run %s as root" % basename)
 686
 687     media = select_file(d, sys.argv[1] if len(sys.argv) == 2 else None)
 688
 689     d.setBackgroundTitle('snf-image-creator')
 690
 691     out = GaugeOutput(d, "Initialization", "Initializing...")
 692     disk = Disk(media, out)
 693
 694     def signal_handler(signum, frame):
 695         out.cleanup()
 696         disk.cleanup()
 697
 698     signal.signal(signal.SIGINT, signal_handler)
 699     try:
 700         snapshot = disk.snapshot()
 701         dev = disk.get_device(snapshot)
 702
 703         out.output("Collecting image metadata...")
 704         metadata = dev.meta
 705         dev.mount(readonly=True)
 706         cls = os_cls(dev.distro, dev.ostype)
 707         image_os = cls(dev.root, dev.g, out)
 708         dev.umount()
 709         metadata.update(image_os.meta)
 710         out.success("done")
 711         out.cleanup()
 712
 713         # Make sure the signal handler does not call out.cleanup again
 714         def dummy(self):
 715             pass
 716         out.cleanup = type(GaugeOutput.cleanup)(dummy, out, GaugeOutput)
 717
 718         session = {"dialog": d,
 719                    "disk": disk,
 720                    "snapshot": snapshot,
 721                    "device": dev,
 722                    "image_os": image_os,
 723                    "metadata": metadata}
 724
 725         main_menu(session)
 726         d.infobox("Thank you for using snf-image-creator. Bye", width=53)
 727     finally:
 728         disk.cleanup()
 729
 730     return 0
 731
 732
 733 def main():
 734
 735     d = dialog.Dialog(dialog="dialog")
 736
 737     # Add extra button in dialog library
 738     dialog._common_args_syntax["extra_button"] = \
 739         lambda enable: dialog._simple_option("--extra-button", enable)
 740
 741     dialog._common_args_syntax["extra_label"] = \
 742         lambda string: ("--extra-label", string)
 743
 744     while 1:
 745         try:
 746             try:
 747                 ret = image_creator(d)
 748                 sys.exit(ret)
 749             except FatalError as e:
 750                 msg = textwrap.fill(str(e), width=70)
 751                 d.infobox(msg, width=70, title="Fatal Error")
 752                 sys.exit(1)
 753         except Reset:
 754             continue
 755
 756 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :