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#!/usr/bin/env python
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# Copyright 2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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#   1. Redistributions of source code must retain the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer.
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#
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#   2. Redistributions in binary form must reproduce the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer in the documentation and/or other materials
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#      provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import sys
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import os
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import textwrap
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import StringIO
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from image_creator import __version__ as version
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from image_creator.util import MD5
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from image_creator.output.dialog import GaugeOutput, InfoBoxOutput
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from image_creator.kamaki_wrapper import Kamaki, ClientError
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from image_creator.help import get_help_file
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from image_creator.dialog_util import SMALL_WIDTH, WIDTH, \
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    update_background_title, confirm_reset, confirm_exit, Reset, \
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    extract_image, extract_metadata_string
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CONFIGURATION_TASKS = [
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    ("Partition table manipulation", ["FixPartitionTable"],
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        ["linux", "windows"]),
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    ("File system resize",
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        ["FilesystemResizeUnmounted", "FilesystemResizeMounted"],
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        ["linux", "windows"]),
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    ("Swap partition configuration", ["AddSwap"], ["linux"]),
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    ("SSH keys removal", ["DeleteSSHKeys"], ["linux"]),
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    ("Temporal RDP disabling", ["DisableRemoteDesktopConnections"],
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        ["windows"]),
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    ("SELinux relabeling at next boot", ["SELinuxAutorelabel"], ["linux"]),
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    ("Hostname/Computer Name assignment", ["AssignHostname"],
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        ["windows", "linux"]),
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    ("Password change", ["ChangePassword"], ["windows", "linux"]),
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    ("File injection", ["EnforcePersonality"], ["windows", "linux"])
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]
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class metadata_monitor(object):
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    def __init__(self, session, meta):
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        self.session = session
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        self.meta = meta
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    def __enter__(self):
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        self.old = {}
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        for (k, v) in self.meta.items():
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            self.old[k] = v
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    def __exit__(self, type, value, traceback):
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        d = self.session['dialog']
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        altered = {}
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        added = {}
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        for (k, v) in self.meta.items():
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            if k not in self.old:
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                added[k] = v
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            elif self.old[k] != v:
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                altered[k] = v
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        if not (len(added) or len(altered)):
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            return
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        msg = "The last action has changed some image properties:\n\n"
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        if len(added):
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            msg += "New image properties:\n"
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            for (k, v) in added.items():
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                msg += '    %s: "%s"\n' % (k, v)
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            msg += "\n"
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        if len(altered):
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            msg += "Updated image properties:\n"
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            for (k, v) in altered.items():
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                msg += '    %s: "%s" -> "%s"\n' % (k, self.old[k], v)
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            msg += "\n"
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        self.session['metadata'].update(added)
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        self.session['metadata'].update(altered)
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        d.msgbox(msg, title="Image Property Changes", width=SMALL_WIDTH)
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def upload_image(session):
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    d = session["dialog"]
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    dev = session['device']
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    size = dev.size
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    if "account" not in session:
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        d.msgbox("You need to provide your ~okeanos login username before you "
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                 "can upload images to pithos+", width=SMALL_WIDTH)
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        return False
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    if "token" not in session:
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        d.msgbox("You need to provide your ~okeanos account authentication "
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                 "token before you can upload images to pithos+",
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                 width=SMALL_WIDTH)
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        return False
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    while 1:
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        init = session["upload"] if "upload" in session else ''
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        (code, answer) = d.inputbox("Please provide a filename:", init=init,
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                                    width=WIDTH)
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        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
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            return False
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        filename = answer.strip()
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        if len(filename) == 0:
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            d.msgbox("Filename cannot be empty", width=SMALL_WIDTH)
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            continue
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        session['upload'] = filename
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        break
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    gauge = GaugeOutput(d, "Image Upload", "Uploading...")
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    try:
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        out = dev.out
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        out.add(gauge)
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        try:
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            if 'checksum' not in session:
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                md5 = MD5(out)
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                session['checksum'] = md5.compute(session['snapshot'], size)
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            kamaki = Kamaki(session['account'], session['token'], out)
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            try:
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                # Upload image file
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                with open(session['snapshot'], 'rb') as f:
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                    session["pithos_uri"] = \
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                        kamaki.upload(f, size, filename,
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                                      "Calculating block hashes",
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                                      "Uploading missing blocks")
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                # Upload metadata file
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                out.output("Uploading metadata file...")
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                metastring = extract_metadata_string(session)
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                kamaki.upload(StringIO.StringIO(metastring),
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                              size=len(metastring),
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                              remote_path="%s.meta" % filename)
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                out.success("done")
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                # Upload md5sum file
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                out.output("Uploading md5sum file...")
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                md5str = "%s %s\n" % (session['checksum'], filename)
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                kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
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                              remote_path="%s.md5sum" % filename)
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                out.success("done")
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173
            except ClientError as e:
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                d.msgbox("Error in pithos+ client: %s" % e.message,
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                         title="Pithos+ Client Error", width=SMALL_WIDTH)
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                if 'pithos_uri' in session:
177
                    del session['pithos_uri']
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                return False
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        finally:
180
            out.remove(gauge)
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    finally:
182
        gauge.cleanup()
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184
    d.msgbox("Image file `%s' was successfully uploaded to pithos+" % filename,
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             width=SMALL_WIDTH)
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187
    return True
188

    
189

    
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def register_image(session):
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    d = session["dialog"]
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    dev = session['device']
193

    
194
    if "account" not in session:
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        d.msgbox("You need to provide your ~okeanos login username before you "
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                 "can register an images to cyclades",
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                 width=SMALL_WIDTH)
198
        return False
199

    
200
    if "token" not in session:
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        d.msgbox("You need to provide your ~okeanos account authentication "
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                 "token before you can register an images to cyclades",
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                 width=SMALL_WIDTH)
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        return False
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206
    if "pithos_uri" not in session:
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        d.msgbox("You need to upload the image to pithos+ before you can "
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                 "register it to cyclades", width=SMALL_WIDTH)
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        return False
210

    
211
    while 1:
212
        (code, answer) = d.inputbox("Please provide a registration name:",
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                                    width=WIDTH)
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        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
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            return False
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        name = answer.strip()
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        if len(name) == 0:
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            d.msgbox("Registration name cannot be empty", width=SMALL_WIDTH)
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            continue
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        break
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223
    metadata = {}
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    metadata.update(session['metadata'])
225
    if 'task_metadata' in session:
226
        for key in session['task_metadata']:
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            metadata[key] = 'yes'
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    gauge = GaugeOutput(d, "Image Registration", "Registering image...")
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    try:
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        out = dev.out
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        out.add(gauge)
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        try:
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            out.output("Registering image with Cyclades...")
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            try:
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                kamaki = Kamaki(session['account'], session['token'], out)
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                kamaki.register(name, session['pithos_uri'], metadata)
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                out.success('done')
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            except ClientError as e:
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                d.msgbox("Error in pithos+ client: %s" % e.message)
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                return False
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        finally:
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            out.remove(gauge)
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    finally:
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        gauge.cleanup()
246

    
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    d.msgbox("Image `%s' was successfully registered with Cyclades as `%s'" %
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             (session['upload'], name), width=SMALL_WIDTH)
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    return True
250

    
251

    
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def kamaki_menu(session):
253
    d = session['dialog']
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    default_item = "Account"
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    account = Kamaki.get_account()
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    if account:
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        session['account'] = account
259

    
260
    token = Kamaki.get_token()
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    if token:
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        session['token'] = token
263

    
264
    while 1:
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        account = session["account"] if "account" in session else "<none>"
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        token = session["token"] if "token" in session else "<none>"
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        upload = session["upload"] if "upload" in session else "<none>"
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        choices = [("Account", "Change your ~okeanos user id: %s" % account),
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                   ("Token", "Change your ~okeanos token: %s" % token),
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                   ("Upload", "Upload image to pithos+"),
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                   ("Register", "Register the image to cyclades: %s" % upload)]
273

    
274
        (code, choice) = d.menu(
275
            text="Choose one of the following or press <Back> to go back.",
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            width=WIDTH, choices=choices, cancel="Back", height=13,
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            menu_height=5, default_item=default_item,
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            title="Image Registration Menu")
279

    
280
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
281
            return False
282

    
283
        if choice == "Account":
284
            default_item = "Account"
285
            (code, answer) = d.inputbox(
286
                "Please provide your ~okeanos account user id:",
287
                init=session["account"] if "account" in session else '',
288
                width=WIDTH)
289
            if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
290
                continue
291
            if len(answer) == 0 and "account" in session:
292
                    del session["account"]
293
            else:
294
                session["account"] = answer.strip()
295
                Kamaki.save_account(session['account'])
296
                default_item = "Token"
297
        elif choice == "Token":
298
            default_item = "Token"
299
            (code, answer) = d.inputbox(
300
                "Please provide your ~okeanos account authetication token:",
301
                init=session["token"] if "token" in session else '',
302
                width=WIDTH)
303
            if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
304
                continue
305
            if len(answer) == 0 and "token" in session:
306
                del session["token"]
307
            else:
308
                session["token"] = answer.strip()
309
                Kamaki.save_token(session['token'])
310
                default_item = "Upload"
311
        elif choice == "Upload":
312
            if upload_image(session):
313
                default_item = "Register"
314
            else:
315
                default_item = "Upload"
316
        elif choice == "Register":
317
            if register_image(session):
318
                return True
319
            else:
320
                default_item = "Register"
321

    
322

    
323
def add_property(session):
324
    d = session['dialog']
325

    
326
    while 1:
327
        (code, answer) = d.inputbox("Please provide a name for a new image"
328
                                    " property:", width=WIDTH)
329
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
330
            return False
331

    
332
        name = answer.strip()
333
        if len(name) == 0:
334
            d.msgbox("A property name cannot be empty", width=SMALL_WIDTH)
335
            continue
336

    
337
        break
338

    
339
    while 1:
340
        (code, answer) = d.inputbox("Please provide a value for image "
341
                                    "property %s" % name, width=WIDTH)
342
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
343
            return False
344

    
345
        value = answer.strip()
346
        if len(value) == 0:
347
            d.msgbox("Value cannot be empty", width=SMALL_WIDTH)
348
            continue
349

    
350
        break
351

    
352
    session['metadata'][name] = value
353

    
354
    return True
355

    
356

    
357
def modify_properties(session):
358
    d = session['dialog']
359

    
360
    while 1:
361
        choices = []
362
        for (key, val) in session['metadata'].items():
363
            choices.append((str(key), str(val)))
364

    
365
        (code, choice) = d.menu(
366
            "In this menu you can edit existing image properties or add new "
367
            "ones. Be careful! Most properties have special meaning and "
368
            "alter the image deployment behaviour. Press <HELP> to see more "
369
            "information about image properties. Press <BACK> when done.",
370
            height=18, width=WIDTH, choices=choices, menu_height=10,
371
            ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
372
            help_button=1, title="Image Properties")
373

    
374
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
375
            return True
376
        # Edit button
377
        elif code == d.DIALOG_OK:
378
            (code, answer) = d.inputbox("Please provide a new value for the "
379
                                        "image property with name `%s':" %
380
                                        choice,
381
                                        init=session['metadata'][choice],
382
                                        width=WIDTH)
383
            if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
384
                value = answer.strip()
385
                if len(value) == 0:
386
                    d.msgbox("Value cannot be empty!")
387
                    continue
388
                else:
389
                    session['metadata'][choice] = value
390
        # ADD button
391
        elif code == d.DIALOG_EXTRA:
392
            add_property(session)
393
        elif code == 'help':
394
            help_file = get_help_file("image_properties")
395
            assert os.path.exists(help_file)
396
            d.textbox(help_file, title="Image Properties", width=70, height=40)
397

    
398

    
399
def delete_properties(session):
400
    d = session['dialog']
401

    
402
    choices = []
403
    for (key, val) in session['metadata'].items():
404
        choices.append((key, "%s" % val, 0))
405

    
406
    (code, to_delete) = d.checklist("Choose which properties to delete:",
407
                                    choices=choices, width=WIDTH)
408

    
409
    # If the user exits with ESC or CANCEL, the returned tag list is empty.
410
    for i in to_delete:
411
        del session['metadata'][i]
412

    
413
    cnt = len(to_delete)
414
    if cnt > 0:
415
        d.msgbox("%d image properties were deleted." % cnt, width=SMALL_WIDTH)
416
        return True
417
    else:
418
        return False
419

    
420

    
421
def exclude_tasks(session):
422
    d = session['dialog']
423

    
424
    index = 0
425
    displayed_index = 1
426
    choices = []
427
    mapping = {}
428
    if 'excluded_tasks' not in session:
429
        session['excluded_tasks'] = []
430

    
431
    if -1 in session['excluded_tasks']:
432
        if not d.yesno("Image deployment configuration is disabled. "
433
                       "Do you wish to enable it?", width=SMALL_WIDTH):
434
            session['excluded_tasks'].remove(-1)
435
        else:
436
            return False
437

    
438
    for (msg, task, osfamily) in CONFIGURATION_TASKS:
439
        if session['metadata']['OSFAMILY'] in osfamily:
440
            checked = 1 if index in session['excluded_tasks'] else 0
441
            choices.append((str(displayed_index), msg, checked))
442
            mapping[displayed_index] = index
443
            displayed_index += 1
444
        index += 1
445

    
446
    while 1:
447
        (code, tags) = d.checklist(
448
            text="Please choose which configuration tasks you would like to "
449
                 "prevent from running during image deployment. "
450
                 "Press <No Config> to supress any configuration. "
451
                 "Press <Help> for more help on the image deployment "
452
                 "configuration tasks.",
453
            choices=choices, height=19, list_height=8, width=WIDTH,
454
            help_button=1, extra_button=1, extra_label="No Config",
455
            title="Exclude Configuration Tasks")
456

    
457
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
458
            return False
459
        elif code == d.DIALOG_HELP:
460
            help_file = get_help_file("configuration_tasks")
461
            assert os.path.exists(help_file)
462
            d.textbox(help_file, title="Configuration Tasks",
463
                      width=70, height=40)
464
        # No Config button
465
        elif code == d.DIALOG_EXTRA:
466
            session['excluded_tasks'] = [-1]
467
            session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
468
            break
469
        elif code == d.DIALOG_OK:
470
            session['excluded_tasks'] = []
471
            for tag in tags:
472
                session['excluded_tasks'].append(mapping[int(tag)])
473

    
474
            exclude_metadata = []
475
            for task in session['excluded_tasks']:
476
                exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
477

    
478
            session['task_metadata'] = map(lambda x: "EXCLUDE_TASK_%s" % x,
479
                                           exclude_metadata)
480
            break
481

    
482
    return True
483

    
484

    
485
def sysprep(session):
486
    d = session['dialog']
487
    image_os = session['image_os']
488

    
489
    # Is the image already shrinked?
490
    if 'shrinked' in session and session['shrinked']:
491
        msg = "It seems you have shrinked the image. Running system " \
492
              "preparation tasks on a shrinked image is dangerous."
493

    
494
        if d.yesno("%s\n\nDo you really want to continue?" % msg,
495
                   width=SMALL_WIDTH, defaultno=1):
496
            return
497

    
498
    wrapper = textwrap.TextWrapper(width=WIDTH - 5)
499

    
500
    help_title = "System Preperation Tasks"
501
    sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
502

    
503
    if 'exec_syspreps' not in session:
504
        session['exec_syspreps'] = []
505

    
506
    all_syspreps = image_os.list_syspreps()
507
    # Only give the user the choice between syspreps that have not ran yet
508
    syspreps = [s for s in all_syspreps if s not in session['exec_syspreps']]
509

    
510
    if len(syspreps) == 0:
511
        d.msgbox("No system preparation task available to run!",
512
                 title="System Preperation", width=SMALL_WIDTH)
513
        return
514

    
515
    while 1:
516
        choices = []
517
        index = 0
518
        for sysprep in syspreps:
519
            name, descr = image_os.sysprep_info(sysprep)
520
            display_name = name.replace('-', ' ').capitalize()
521
            sysprep_help += "%s\n" % display_name
522
            sysprep_help += "%s\n" % ('-' * len(display_name))
523
            sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
524
            enabled = 1 if sysprep.enabled else 0
525
            choices.append((str(index + 1), display_name, enabled))
526
            index += 1
527

    
528
        (code, tags) = d.checklist(
529
            "Please choose which system preparation tasks you would like to "
530
            "run on the image. Press <Help> to see details about the system "
531
            "preparation tasks.", title="Run system preparation tasks",
532
            choices=choices, width=70, ok_label="Run", help_button=1)
533

    
534
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
535
            return False
536
        elif code == d.DIALOG_HELP:
537
            d.scrollbox(sysprep_help, width=WIDTH)
538
        elif code == d.DIALOG_OK:
539
            # Enable selected syspreps and disable the rest
540
            for i in range(len(syspreps)):
541
                if str(i + 1) in tags:
542
                    image_os.enable_sysprep(syspreps[i])
543
                    session['exec_syspreps'].append(syspreps[i])
544
                else:
545
                    image_os.disable_sysprep(syspreps[i])
546

    
547
            infobox = InfoBoxOutput(d, "Image Configuration")
548
            try:
549
                dev = session['device']
550
                dev.out.add(infobox)
551
                try:
552
                    dev.mount(readonly=False)
553
                    try:
554
                        # The checksum is invalid. We have mounted the image rw
555
                        if 'checksum' in session:
556
                            del session['checksum']
557

    
558
                        # Monitor the metadata changes during syspreps
559
                        with metadata_monitor(session, image_os.meta):
560
                            image_os.do_sysprep()
561
                            infobox.finalize()
562

    
563
                        # Disable syspreps that have ran
564
                        for sysprep in session['exec_syspreps']:
565
                            image_os.disable_sysprep(sysprep)
566
                    finally:
567
                        dev.umount()
568
                finally:
569
                    dev.out.remove(infobox)
570
            finally:
571
                infobox.cleanup()
572
            break
573
    return True
574

    
575

    
576
def shrink(session):
577
    d = session['dialog']
578
    dev = session['device']
579

    
580
    shrinked = 'shrinked' in session and session['shrinked']
581

    
582
    if shrinked:
583
        d.msgbox("The image is already shrinked!", title="Image Shrinking",
584
                 width=SMALL_WIDTH)
585
        return True
586

    
587
    msg = "This operation will shrink the last partition of the image to " \
588
          "reduce the total image size. If the last partition is a swap " \
589
          "partition, then this partition is removed and the partition " \
590
          "before that is shrinked. The removed swap partition will be " \
591
          "recreated during image deployment."
592

    
593
    if not d.yesno("%s\n\nDo you want to continue?" % msg, width=WIDTH,
594
                   height=12, title="Image Shrinking"):
595
        with metadata_monitor(session, dev.meta):
596
            infobox = InfoBoxOutput(d, "Image Shrinking", height=4)
597
            dev.out.add(infobox)
598
            try:
599
                dev.shrink()
600
                infobox.finalize()
601
            finally:
602
                dev.out.remove(infobox)
603

    
604
        session['shrinked'] = True
605
        update_background_title(session)
606
    else:
607
        return False
608

    
609
    return True
610

    
611

    
612
def customization_menu(session):
613
    d = session['dialog']
614

    
615
    choices = [("Sysprep", "Run various image preparation tasks"),
616
               ("Shrink", "Shrink image"),
617
               ("View/Modify", "View/Modify image properties"),
618
               ("Delete", "Delete image properties"),
619
               ("Exclude", "Exclude various deployment tasks from running")]
620

    
621
    default_item = 0
622

    
623
    actions = {"Sysprep": sysprep,
624
               "Shrink": shrink,
625
               "View/Modify": modify_properties,
626
               "Delete": delete_properties,
627
               "Exclude": exclude_tasks}
628
    while 1:
629
        (code, choice) = d.menu(
630
            text="Choose one of the following or press <Back> to exit.",
631
            width=WIDTH, choices=choices, cancel="Back", height=13,
632
            menu_height=len(choices), default_item=choices[default_item][0],
633
            title="Image Customization Menu")
634

    
635
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
636
            break
637
        elif choice in actions:
638
            default_item = [entry[0] for entry in choices].index(choice)
639
            if actions[choice](session):
640
                default_item = (default_item + 1) % len(choices)
641

    
642

    
643
def main_menu(session):
644
    d = session['dialog']
645
    dev = session['device']
646

    
647
    update_background_title(session)
648

    
649
    choices = [("Customize", "Customize image & ~okeanos deployment options"),
650
               ("Register", "Register image to ~okeanos"),
651
               ("Extract", "Dump image to local file system"),
652
               ("Reset", "Reset everything and start over again"),
653
               ("Help", "Get help for using snf-image-creator")]
654

    
655
    default_item = "Customize"
656

    
657
    actions = {"Customize": customization_menu, "Register": kamaki_menu,
658
               "Extract": extract_image}
659
    while 1:
660
        (code, choice) = d.menu(
661
            text="Choose one of the following or press <Exit> to exit.",
662
            width=WIDTH, choices=choices, cancel="Exit", height=13,
663
            default_item=default_item, menu_height=len(choices),
664
            title="Image Creator for ~okeanos (snf-image-creator version %s)" %
665
                  version)
666

    
667
        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
668
            if confirm_exit(d):
669
                break
670
        elif choice == "Reset":
671
            if confirm_reset(d):
672
                d.infobox("Resetting snf-image-creator. Please wait...",
673
                          width=SMALL_WIDTH)
674
                raise Reset
675
        elif choice in actions:
676
            actions[choice](session)
677

    
678
# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :