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LCP support

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NoDRM
2021-11-17 21:53:24 +01:00
parent 05e0d0bedb
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16 changed files with 218 additions and 55 deletions
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14
DeDRM_plugin/DeDRM_Help.htm
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@@ -17,15 +17,19 @@ p {margin-top: 0}
<body>
<h1>DeDRM Plugin <span class="version">(v6.7.0)</span></h1>
<h1>DeDRM Plugin <span class="version">(v10.0.0)</span></h1>
<p>This plugin removes DRM from ebooks when they are imported into calibre. If you already have DRMed ebooks in your calibre library, you will need to remove them and import them again.</p>
<p>It is a forked version created by NoDRM, based on the original plugin by Apprentice Alf and Apprentice Harper.</p>
<h3>Installation</h3>
<p>You have obviously managed to install the plugin, as otherwise you wouldn’t be reading this help file. However, you should also delete any older DRM removal plugins, as this DeDRM plugin replaces the five older plugins: Kindle and Mobipocket DeDRM (K4MobiDeDRM), Ignoble Epub DeDRM (ignobleepub), Inept Epub DeDRM (ineptepub), Inept PDF DeDRM (ineptepub) and eReader PDB 2 PML (eReaderPDB2PML).</p>
<h3>Configuration</h3>
<p>On Windows and Mac, the keys for ebooks downloaded for Kindle for Mac/PC and Adobe Digital Editions are automatically generated. If all your DRMed ebooks can be opened and read in Kindle for Mac/PC and/or Adobe Digital Editions on the same computer on which you are running calibre, you do not need to do any configuration of this plugin. On Linux, keys for Kindle for PC and Adobe Digital Editions need to be generated separately (see the Linux section below)</p>
<p>On Windows and Mac, the keys for ebooks downloaded for Kindle for Mac/PC and Adobe Digital Editions are automatically generated. If all your DRMed ebooks can be opened and read in Kindle for Mac/PC and/or Adobe Digital Editions on the same computer on which you are running calibre, you do not need to do any configuration of this plugin. On Linux, keys for Kindle for PC and Adobe Digital Editions need to be generated separately (see the Linux section below).</p>
<p>If you are using the <a href="https://www.mobileread.com/forums/showthread.php?t=341975">DeACSM / ACSM Input Plugin</a> for Calibre, the keys will also automatically be dumped for you.</p>
<p>If you have other DRMed ebooks, you will need to enter extra configuration information. The buttons in this dialog will open individual configuration dialogs that will allow you to enter the needed information, depending on the type and source of your DRMed eBooks. Additional help on the information required is available in each of the the dialogs.</p>
@@ -42,11 +46,12 @@ p {margin-top: 0}
<h3>Credits:</h3>
<ul>
<li>NoDRM for a bunch of updates and the Readium LCP support</li>
<li>The Dark Reverser for the Mobipocket and eReader scripts</li>
<li>i♥cabbages for the Adobe Digital Editions scripts</li>
<li>Skindle aka Bart Simpson for the Amazon Kindle for PC script</li>
<li>CMBDTC for Amazon Topaz DRM removal script</li>
<li>some_updates, clarknova and Bart Simpson for Amazon Topaz conversion scripts</li>
<li>some_updates, clarknova and Bart Simpson for Amazon Topaz conversion scripts</li>
<li>DiapDealer for the first calibre plugin versions of the tools</li>
<li>some_updates, DiapDealer, Apprentice Alf and mdlnx for Amazon Kindle/Mobipocket tools</li>
<li>some_updates for the DeDRM all-in-one Python tool</li>
@@ -55,7 +60,8 @@ p {margin-top: 0}
<li>And probably many more.</li>
</ul>
<h3> For additional help read the <a href="https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md">FAQs</a> at <a href="https://github.com/apprenticeharper/DeDRM_tools/">Apprentice Harpers’s GitHub repository</a>. You can ask questions in the comments section of the <a href="http://apprenticealf.wordpress.com/2012/09/10/drm-removal-tools-for-ebooks/">first post</a> at <a href="http://wordpress.com/apprenticealf/">Apprentice Alf's blog</a> or <a href="https://github.com/apprenticeharper/DeDRM_tools/issues">raise an issue</a>. </h3>
<h3>For additional help read the <a href="https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md">FAQs</a> at <a href="https://github.com/noDRM/DeDRM_tools">NoDRM's GitHub repository</a> (or the corresponding <a href="https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md">FAQs</a> at <a href="https://github.com/apprenticeharper/DeDRM_tools/">Apprentice Harpers’s GitHub repository</a>). You can <a href="https://github.com/noDRM/DeDRM_tools/issues">open issue reports</a>related to this fork at NoDRM's GitHub repository.</h3>
<h2>Linux Systems Only</h2>
<h3>Generating decryption keys for Adobe Digital Editions and Kindle for PC</h3>

2
DeDRM_plugin/DeDRM_Mobipocket PID_Help.htm
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@@ -35,7 +35,7 @@ li {margin-top: 0.5em}
<p>On the right-hand side of the plugin’s customization dialog, you will see a button with an icon that looks like a red "X". Clicking this button will delete the highlighted Mobipocket PID from the list. You will be prompted once to be sure that’s what you truly mean to do. Once gone, it’s permanently gone.</p>
<p>Once done creating/deleting PIDs, click Close to exit the customization dialogue. Your changes wil only be saved permanently when you click OK in the main configuration dialog.</p>
<p>Once done creating/deleting PIDs, click Close to exit the customization dialogue. Your changes will only be saved permanently when you click OK in the main configuration dialog.</p>
</body>

41
DeDRM_plugin/DeDRM_Readium LCP passphrase_Help.htm Normal file
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@@ -0,0 +1,41 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Managing Readium LCP passphrases</title>
<style type="text/css">
span.version {font-size: 50%}
span.bold {font-weight: bold}
h3 {margin-bottom: 0}
p {margin-top: 0}
li {margin-top: 0.5em}
</style>
</head>
<body>
<h1>Managing Readium LCP passphrases</h1>
<p>Readium LCP is a relatively new eBook DRM. It's also known under the names "CARE DRM" or "TEA DRM". It does not rely on any accounts or key data that's difficult to acquire. All you need to open (or decrypt) LCP eBooks is the account passphrase given to you by the eBook provider - the very same passphrase you'd have to enter into your eBook reader device (once) to read LCP-encrypted books.</p>
<h3>Entering an LCP passphrase:</h3>
<p>On the right-hand side of the plugin’s customization dialog, you will see a button with an icon that looks like a green plus sign (+). Clicking this button will open a new dialog for entering a new passphrase.</p>
<p>Just enter your passphrase as provided with the book, then click the OK button to save the passphrase. </p>
<p>Usually, passphrases are identical for all books bought with the same account. So if you buy multiple LCP-protected eBooks, they'll usually all have the same passphrase if they've all been bought at the same store with the same account. </p>
<h3>Deleting an LCP passphrase:</h3>
<p>On the right-hand side of the plugin’s customization dialog, you will see a button with an icon that looks like a red "X". Clicking this button will delete the highlighted passphrase from the list. You will be prompted once to be sure that’s what you truly mean to do. Once gone, it’s permanently gone.</p>
<p>Once done entering/deleting passphrases, click Close to exit the customization dialogue. Your changes will only be saved permanently when you click OK in the main configuration dialog.</p>
</body>
</html>

58
DeDRM_plugin/__init__.py
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@@ -6,7 +6,7 @@
# Copyright © 2021 NoDRM
__license__ = 'GPL v3'
__version__ = '7.2.1'
__version__ = '10.0.0'
__docformat__ = 'restructuredtext en'
@@ -78,6 +78,7 @@ __docformat__ = 'restructuredtext en'
# 7.1.0 - Full release for calibre 5.x
# 7.2.0 - Update for latest KFX changes, and Python 3 Obok fixes.
# 7.2.1 - Whitespace!
# 10.0.0 - First forked version by NoDRM. See CHANGELOG.md for details.
"""
Decrypt DRMed ebooks.
@@ -130,7 +131,7 @@ class SafeUnbuffered:
class DeDRM(FileTypePlugin):
name = PLUGIN_NAME
description = "Removes DRM from Amazon Kindle, Adobe Adept (including Kobo), Barnes & Noble, Mobipocket and eReader ebooks. Credit given to i♥cabbages and The Dark Reverser for the original stand-alone scripts."
description = "Removes DRM from Amazon Kindle, Adobe Adept (including Kobo), Readium LCP, Barnes & Noble, Mobipocket and eReader ebooks. Credit given to i♥cabbages and The Dark Reverser for the original stand-alone scripts."
supported_platforms = ['linux', 'osx', 'windows']
author = "Apprentice Alf, Apprentice Harper, NoDRM, The Dark Reverser and i♥cabbages"
version = PLUGIN_VERSION_TUPLE
@@ -225,10 +226,10 @@ class DeDRM(FileTypePlugin):
# Remove watermarks (currently just Amazon) from the OPF file
path_to_ebook = watermark.removeOPFwatermarks(self, path_to_ebook) or path_to_ebook
# Remove watermarks (currently just Adobe's resource ID) from all HTML and XHTML files
path_to_ebook = watermark.removeHTMLwatermarks(self, path_to_ebook) or path_to_ebook
return path_to_ebook
except:
@@ -240,18 +241,18 @@ class DeDRM(FileTypePlugin):
# It checks if there's fonts that need to be deobfuscated
try:
import calibre_plugins.dedrm.epubfontdecrypt as epubfontdecrypt
import calibre_plugins.dedrm.epubfontdecrypt as epubfontdecrypt
output = self.temporary_file(".epub").name
ret = epubfontdecrypt.decryptFontsBook(path_to_ebook, output)
output = self.temporary_file(".epub").name
ret = epubfontdecrypt.decryptFontsBook(path_to_ebook, output)
if (ret == 0):
return output
elif (ret == 1):
return path_to_ebook
else:
print("{0} v{1}: Error during font deobfuscation".format(PLUGIN_NAME, PLUGIN_VERSION))
raise DeDRMError("Font deobfuscation failed")
if (ret == 0):
return output
elif (ret == 1):
return path_to_ebook
else:
print("{0} v{1}: Error during font deobfuscation".format(PLUGIN_NAME, PLUGIN_VERSION))
raise DeDRMError("Font deobfuscation failed")
except:
print("{0} v{1}: Error during font deobfuscation".format(PLUGIN_NAME, PLUGIN_VERSION))
@@ -276,6 +277,22 @@ class DeDRM(FileTypePlugin):
import calibre_plugins.dedrm.prefs as prefs
dedrmprefs = prefs.DeDRM_Prefs()
# import the LCP handler
import calibre_plugins.dedrm.lcpdedrm as lcpdedrm
if (lcpdedrm.isLCPbook(path_to_ebook)):
try:
retval = lcpdedrm.decryptLCPbook(path_to_ebook, dedrmprefs['lcp_passphrases'], self)
except:
print("Looks like that didn't work:")
raise
return self.postProcessEPUB(retval)
# Not an LCP book, do the normal EPUB (Adobe) handling.
# import the Barnes & Noble ePub handler
import calibre_plugins.dedrm.ignobleepub as ignobleepub
@@ -545,8 +562,21 @@ class DeDRM(FileTypePlugin):
def PDFDecrypt(self,path_to_ebook):
import calibre_plugins.dedrm.prefs as prefs
import calibre_plugins.dedrm.ineptpdf as ineptpdf
import calibre_plugins.dedrm.lcpdedrm as lcpdedrm
dedrmprefs = prefs.DeDRM_Prefs()
if (lcpdedrm.isLCPbook(path_to_ebook)):
try:
retval = lcpdedrm.decryptLCPbook(path_to_ebook, dedrmprefs['lcp_passphrases'], self)
except:
print("Looks like that didn't work:")
raise
return retval
# Not an LCP book, do the normal Adobe handling.
book_uuid = None
try:
# Try to figure out which Adobe account this book is licensed for.

51
DeDRM_plugin/config.py
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@@ -84,6 +84,7 @@ class ConfigWidget(QWidget):
self.tempdedrmprefs['kindlewineprefix'] = self.dedrmprefs['kindlewineprefix']
self.tempdedrmprefs['deobfuscate_fonts'] = self.dedrmprefs['deobfuscate_fonts']
self.tempdedrmprefs['remove_watermarks'] = self.dedrmprefs['remove_watermarks']
self.tempdedrmprefs['lcp_passphrases'] = list(self.dedrmprefs['lcp_passphrases'])
# Start Qt Gui dialog layout
layout = QVBoxLayout(self)
@@ -134,6 +135,10 @@ class ConfigWidget(QWidget):
self.ereader_button.setToolTip(_("Click to manage keys for eReader ebooks"))
self.ereader_button.setText("eReader ebooks")
self.ereader_button.clicked.connect(self.ereader_keys)
self.lcp_button = QtGui.QPushButton(self)
self.lcp_button.setToolTip(_("Click to manage passphrases for Readium LCP ebooks"))
self.lcp_button.setText("Readium LCP ebooks")
self.lcp_button.clicked.connect(self.readium_lcp_keys)
button_layout.addWidget(self.kindle_serial_button)
button_layout.addWidget(self.kindle_android_button)
button_layout.addWidget(self.bandn_button)
@@ -141,6 +146,7 @@ class ConfigWidget(QWidget):
button_layout.addWidget(self.ereader_button)
button_layout.addWidget(self.adept_button)
button_layout.addWidget(self.kindle_key_button)
button_layout.addWidget(self.lcp_button)
self.chkFontObfuscation = QtGui.QCheckBox(_("Deobfuscate EPUB fonts"))
self.chkFontObfuscation.setToolTip("Deobfuscates fonts in EPUB files after DRM removal")
@@ -192,6 +198,10 @@ class ConfigWidget(QWidget):
d = ManageKeysDialog(self,"eReader Key",self.tempdedrmprefs['ereaderkeys'], AddEReaderDialog, 'b63')
d.exec_()
def readium_lcp_keys(self):
d = ManageKeysDialog(self,"Readium LCP passphrase",self.tempdedrmprefs['lcp_passphrases'], AddLCPKeyDialog)
d.exec_()
def help_link_activated(self, url):
def get_help_file_resource():
# Copy the HTML helpfile to the plugin directory each time the
@@ -216,6 +226,7 @@ class ConfigWidget(QWidget):
self.dedrmprefs.set('configured', True)
self.dedrmprefs.set('deobfuscate_fonts', self.chkFontObfuscation.isChecked())
self.dedrmprefs.set('remove_watermarks', self.chkRemoveWatermarks.isChecked())
self.dedrmprefs.set('lcp_passphrases', self.tempdedrmprefs['lcp_passphrases'])
self.dedrmprefs.writeprefs()
def load_resource(self, name):
@@ -1106,3 +1117,43 @@ class AddPIDDialog(QDialog):
QDialog.accept(self)
class AddLCPKeyDialog(QDialog):
def __init__(self, parent=None,):
QDialog.__init__(self, parent)
self.parent = parent
self.setWindowTitle("{0} {1}: Add new Readium LCP passphrase".format(PLUGIN_NAME, PLUGIN_VERSION))
layout = QVBoxLayout(self)
self.setLayout(layout)
data_group_box = QGroupBox("", self)
layout.addWidget(data_group_box)
data_group_box_layout = QVBoxLayout()
data_group_box.setLayout(data_group_box_layout)
key_group = QHBoxLayout()
data_group_box_layout.addLayout(key_group)
key_group.addWidget(QLabel("Readium LCP passphrase:", self))
self.key_ledit = QLineEdit("", self)
self.key_ledit.setToolTip("Enter your Readium LCP passphrase")
key_group.addWidget(self.key_ledit)
self.button_box = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
self.button_box.accepted.connect(self.accept)
self.button_box.rejected.connect(self.reject)
layout.addWidget(self.button_box)
self.resize(self.sizeHint())
@property
def key_name(self):
return None
@property
def key_value(self):
return str(self.key_ledit.text())
def accept(self):
if len(self.key_value) == 0 or self.key_value.isspace():
errmsg = "Please enter your LCP passphrase or click Cancel in the dialog."
return error_dialog(None, "{0} {1}".format(PLUGIN_NAME, PLUGIN_VERSION), errmsg, show=True, show_copy_button=False)
QDialog.accept(self)

11
DeDRM_plugin/epubfontdecrypt.py
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@@ -148,7 +148,6 @@ def decryptFontsBook(inpath, outpath):
with closing(ZipFile(open(inpath, 'rb'))) as inf:
namelist = inf.namelist()
if 'META-INF/encryption.xml' not in namelist:
print("{0:s} has no obfuscated fonts".format(os.path.basename(inpath)))
return 1
# Font key handling:
@@ -173,7 +172,7 @@ def decryptFontsBook(inpath, outpath):
# If path is set, it's the path to the main content OPF file.
if (path is None):
print("No OPF for font obfuscation found")
print("FontDecrypt: No OPF for font obfuscation found")
return 1
else:
packageNS = lambda tag: '{%s}%s' % ('http://www.idpf.org/2007/opf', tag)
@@ -185,7 +184,7 @@ def decryptFontsBook(inpath, outpath):
container = []
## IETF font key algorithm:
print("Checking {0} for IETF font obfuscation keys ... ".format(path), end='')
print("FontDecrypt: Checking {0} for IETF font obfuscation keys ... ".format(path), end='')
secret_key_name = None
try:
secret_key_name = container.get("unique-identifier")
@@ -216,7 +215,7 @@ def decryptFontsBook(inpath, outpath):
print("not found")
## Adobe font key algorithm
print("Checking {0} for Adobe font obfuscation keys ... ".format(path), end='')
print("FontDecrypt: Checking {0} for Adobe font obfuscation keys ... ".format(path), end='')
try:
metadata = container.find(packageNS("metadata"))
@@ -284,7 +283,7 @@ def decryptFontsBook(inpath, outpath):
# Check if there's still other entries not related to fonts
if (decryptor.check_if_remaining()):
data = decryptor.get_xml()
print("There's remaining entries in encryption.xml, adding file ...")
print("FontDecrypt: There's remaining entries in encryption.xml, adding file ...")
else:
# No remaining entries, no need for that file.
continue
@@ -313,7 +312,7 @@ def decryptFontsBook(inpath, outpath):
else:
outf.writestr(zi, decryptor.decrypt(path, data))
except:
print("Could not decrypt fonts in {0:s} because of an exception:\n{1:s}".format(os.path.basename(inpath), traceback.format_exc()))
print("FontDecrypt: Could not decrypt fonts in {0:s} because of an exception:\n{1:s}".format(os.path.basename(inpath), traceback.format_exc()))
traceback.print_exc()
return 2
return 0

13
DeDRM_plugin/epubtest.py
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@@ -12,6 +12,7 @@
# 1.00 - Cut to epubtest.py, testing ePub files only by Apprentice Alf
# 1.01 - Added routine for use by Windows DeDRM
# 2.00 - Python 3, September 2020
# 2.01 - Add new Adobe DRM, add Readium LCP
#
# Written in 2011 by Paul Durrant
# Released with unlicense. See http://unlicense.org/
@@ -185,7 +186,13 @@ def encryption(infile):
foundencryption = False
inzip = zipfile.ZipFile(infile,'r')
namelist = set(inzip.namelist())
if 'META-INF/rights.xml' not in namelist or 'META-INF/encryption.xml' not in namelist:
if (
'META-INF/encryption.xml' in namelist and
'META-INF/license.lcpl' in namelist and
b"EncryptedContentKey" in inzip.read("META-INF/encryption.xml")):
encryption = "Readium LCP"
elif 'META-INF/rights.xml' not in namelist or 'META-INF/encryption.xml' not in namelist:
encryption = "Unencrypted"
else:
rights = etree.fromstring(inzip.read('META-INF/rights.xml'))
@@ -193,7 +200,9 @@ def encryption(infile):
expr = './/%s' % (adept('encryptedKey'),)
bookkey = ''.join(rights.findtext(expr))
if len(bookkey) == 172:
encryption = "Adobe"
encryption = "Adobe (old)"
if len(bookkey) == 192:
encryption = "Adobe (new)"
elif len(bookkey) == 64:
encryption = "B&N"
else:

2
DeDRM_plugin/epubwatermark.py
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@@ -30,7 +30,7 @@ def removeHTMLwatermarks(object, path_to_ebook):
modded_contents = []
for file in namelist:
if not (file.endswith('.html') or file.endswith('.xhtml')):
if not (file.endswith('.html') or file.endswith('.xhtml') or file.endswith('.xml')):
continue
try:

3
DeDRM_plugin/prefs.py
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@@ -28,6 +28,7 @@ class DeDRM_Prefs():
self.dedrmprefs.defaults['androidkeys'] = {}
self.dedrmprefs.defaults['pids'] = []
self.dedrmprefs.defaults['serials'] = []
self.dedrmprefs.defaults['lcp_passphrases'] = []
self.dedrmprefs.defaults['adobewineprefix'] = ""
self.dedrmprefs.defaults['kindlewineprefix'] = ""
@@ -49,6 +50,8 @@ class DeDRM_Prefs():
self.dedrmprefs['pids'] = []
if self.dedrmprefs['serials'] == []:
self.dedrmprefs['serials'] = []
if self.dedrmprefs['lcp_passphrases'] == []:
self.dedrmprefs['lcp_passphrases'] = []
def __getitem__(self,kind = None):
if kind is not None: