Remove future import from ion.py

Fix #585.
Use /sys/class/net/IFACE/address for the MAC address instead of the ip
command.

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
         run: python3 make_release.py
 
       - name: Upload
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with: 
           name: plugin
           path: |

CHANGELOG.md

@@ -103,3 +103,11 @@ This is v10.0.9, a release candidate for v10.1.0. I don't expect there to be maj
 - Fix a bug where decrypting a 256-bit AES pdf with V=5 didn't work.
 - Fix bugs in kgenpids.py, alfcrypto.py, mobidedrm.py and kindlekey.py that caused it to fail on Python 2 (#380).
 - Fix some bugs (Python 2 and Python 3) in erdr2pml.py (untested).
+- Fix file lock bug in androidkindlekey.py on Windows with Calibre >= 7 (untested).
+- A bunch of updates to the external FileOpen ineptpdf script, might fix #442 (untested).
+- Fix exception handling on decrypt in ion.py (#662, thanks @C0rn3j).
+- Fix SHA1 hash function for erdr2pml.py script (#608, thanks @unwiredben).
+- Make Kobo DRM removal not fail when there are undownloaded ebooks (#384, thanks @precondition).
+- Fix Obok import failing in Calibre flatpak due to missing ip command (#586 and #585, thanks @jcotton42).
+- Don't re-pack EPUB if there's no DRM to remove and no postprocessing done (fixes #555).
+

DeDRM_plugin/DeDRM_Kindle for Mac and PC Key_Help.htm

@@ -22,6 +22,8 @@ li {margin-top: 0.5em}
 
 <p>If you have upgraded from an earlier version of the plugin, any existing Kindle for Mac/PC keys will have been automatically imported, so you might not need to do any more configuration. In addition, on Windows and Mac, the default Kindle for Mac/PC key is added the first time the plugin is run. Continue reading for key generation and management instructions.</p>
 
+<p>Note that for best results, you should run Calibre / this plugin on the same machine where Kindle 4 PC / Kindle 4 Mac is running. It is possible to export/import the keys to another machine, but this may not always work, particularly with the newer DRM versions.</p>
+
 <h3>Creating New Keys:</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 prompting you to enter a key name for the default Kindle for Mac/PC key. </p>

DeDRM_plugin/__init__.py

@@ -216,12 +216,16 @@ class DeDRM(FileTypePlugin):
             traceback.print_exc()
             raise
 
-    def postProcessEPUB(self, path_to_ebook):
+    def postProcessEPUB(self, path_to_ebook, path_to_original_ebook = None):
         # This is called after the DRM is removed (or if no DRM was present)
         # It does stuff like de-obfuscating fonts (by calling checkFonts) 
         # or removing watermarks. 
 
         postProcessStart = time.time()
+        postProcessingNeeded = False
+
+        # Save a backup of the EPUB path after DRM removal but before any postprocessing is done.
+        pre_postprocessing_EPUB_path = path_to_ebook
 
         try: 
             import prefs
@@ -248,6 +252,15 @@ class DeDRM(FileTypePlugin):
             postProcessEnd = time.time()
             print("{0} v{1}: Post-processing took {2:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION, postProcessEnd-postProcessStart))
 
+
+            # If the EPUB is DRM-free (path_to_original_ebook will only be set in this case), 
+            # and the post-processing hasn't changed anything in the EPUB, 
+            # return the raw original file from path_to_original_ebook from before the
+            # zipfix code was executed.
+            if ((path_to_ebook == pre_postprocessing_EPUB_path) and path_to_original_ebook is not None):
+                print("{0} v{1}: Post-processing didn't do anything on DRM-free EPUB, returning original file".format(PLUGIN_NAME, PLUGIN_VERSION))
+                return path_to_original_ebook
+
             return path_to_ebook
 
         except: 
@@ -299,9 +312,9 @@ class DeDRM(FileTypePlugin):
         # import the LCP handler
         import lcpdedrm
 
-        if (lcpdedrm.isLCPbook(path_to_ebook)):
+        if (lcpdedrm.isLCPbook(inf.name)):
             try: 
-                retval = lcpdedrm.decryptLCPbook(path_to_ebook, dedrmprefs['lcp_passphrases'], self)
+                retval = lcpdedrm.decryptLCPbook(inf.name, dedrmprefs['lcp_passphrases'], self)
             except:
                 print("Looks like that didn't work:")
                 raise
@@ -628,7 +641,7 @@ class DeDRM(FileTypePlugin):
 
         # Not a Barnes & Noble nor an Adobe Adept
         # Probably a DRM-free EPUB, but we should still check for fonts.
-        return self.postProcessEPUB(inf.name)
+        return self.postProcessEPUB(inf.name, path_to_ebook)
 
     
     def PDFIneptDecrypt(self, path_to_ebook):

DeDRM_plugin/androidkindlekey.py

@@ -201,6 +201,9 @@ def get_serials2(path=STORAGE2):
         for y in tokens:
             serials.append(y)
             serials.append(x+y)
+
+    connection.close()
+
     return serials
 
 def get_serials(path=STORAGE):

DeDRM_plugin/erdr2pml.py

@@ -255,7 +255,7 @@ class EreaderProcessor(object):
             encrypted_key = r[172:172+8]
             encrypted_key_sha = r[56:56+20]
         self.content_key = des.decrypt(encrypted_key)
-        if sha1(self.content_key).digest() != encrypted_key_sha:
+        if hashlib.sha1(self.content_key).digest() != encrypted_key_sha:
             raise ValueError('Incorrect Name and/or Credit Card')
 
     def getNumImages(self):

DeDRM_plugin/ineptpdf.py

@@ -834,7 +834,7 @@ def num_value(x):
     x = resolve1(x)
     if not (isinstance(x, int) or isinstance(x, Decimal)):
         if STRICT:
-            raise PDFTypeError('Int or Float required: %r' % x)
+            raise PDFTypeError('Int or Decimal required: %r' % x)
         return 0
     return x
 
@@ -2042,7 +2042,7 @@ class PDFParser(PSStackParser):
         except PDFNoValidXRef:
             # fallback
             self.seek(0)
-            pat = re.compile(b'^(\\d+)\\s+(\\d+)\\s+obj\\b')
+            pat = re.compile(br'^(\\d+)\\s+(\\d+)\\s+obj\\b')
             offsets = {}
             xref = PDFXRef()
             while 1:

DeDRM_plugin/ion.py

@@ -1,24 +1,19 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-# ion.py
+"""ion.py: Decrypt Kindle KFX files.
-# Copyright © 2013-2020 Apprentice Harper et al.
 
-__license__ = 'GPL v3'
+Revision history:
-__version__ = '3.0'
+  Pascal implementation by lulzkabulz.
+  BinaryIon.pas + DrmIon.pas + IonSymbols.pas
+  1.0   - Python translation by apprenticenaomi.
+  1.1   - DeDRM integration by anon.
+  1.2   - Added pylzma import fallback
+  1.3   - Fixed lzma support for calibre 4.6+
+  2.0   - VoucherEnvelope v2/v3 support by apprenticesakuya.
+  3.0   - Added Python 3 compatibility for calibre 5.0
 
-# Revision history:
+Copyright © 2013-2020 Apprentice Harper et al.
-#  Pascal implementation by lulzkabulz.
-#  BinaryIon.pas + DrmIon.pas + IonSymbols.pas
-#  1.0   - Python translation by apprenticenaomi.
-#  1.1   - DeDRM integration by anon.
-#  1.2   - Added pylzma import fallback
-#  1.3   - Fixed lzma support for calibre 4.6+
-#  2.0   - VoucherEnvelope v2/v3 support by apprenticesakuya.
-#  3.0   - Added Python 3 compatibility for calibre 5.0
-
-"""
-Decrypt Kindle KFX files.
 """
 
 import collections
@@ -30,6 +25,9 @@ import struct
 
 from io import BytesIO
 
+__license__ = 'GPL v3'
+__version__ = '3.0'
+
 #@@CALIBRE_COMPAT_CODE@@
 
 
@@ -1349,7 +1347,7 @@ class DrmIonVoucher(object):
                          process_V4648(shared), process_V5683(shared)]
 
         decrypted=False
-        ex=None
+        lastexception = None # type: Exception | None
         for sharedsecret in sharedsecrets:
             key = hmac.new(sharedsecret, b"PIDv3", digestmod=hashlib.sha256).digest()
             aes = AES.new(key[:32], AES.MODE_CBC, self.cipheriv[:16])
@@ -1366,9 +1364,10 @@ class DrmIonVoucher(object):
                 print("Decryption succeeded")
                 break
             except Exception as ex:
+                lastexception = ex
                 print("Decryption failed, trying next fallback ")
         if not decrypted:
-            raise ex
+            raise lastexception
 
         self.drmkey.stepin()
         while self.drmkey.hasnext():

DeDRM_plugin/kfxdedrm.py

@@ -74,7 +74,7 @@ class KFXZipBook:
             # Belt and braces. PIDs should be unicode strings, but just in case...
             if isinstance(pid, bytes):
                 pid = pid.decode('ascii')
-            for dsn_len,secret_len in [(0,0), (16,0), (16,40), (32,40), (40,0), (40,40)]:
+            for dsn_len,secret_len in [(0,0), (16,0), (16,40), (32,0), (32,40), (40,0), (40,40)]:
                 if len(pid) == dsn_len + secret_len:
                     break       # split pid into DSN and account secret
             else:

Obok_plugin/action.py

@@ -374,7 +374,11 @@ class InterfacePluginAction(InterfaceAction):
         result['success'] = False
         result['fileobj'] = None
 
-        zin = zipfile.ZipFile(book.filename, 'r')
+        try:
+            zin = zipfile.ZipFile(book.filename, 'r')
+        except FileNotFoundError:
+            print (_('{0} - File "{1}" not found. Make sure the eBook has been properly downloaded in the Kobo app.').format(PLUGIN_NAME, book.filename))
+            return result
         #print ('Kobo library filename: {0}'.format(book.filename))
         for userkey in self.userkeys:
             print (_('Trying key: '), codecs.encode(userkey, 'hex'))

Obok_plugin/obok/obok.py

@@ -449,9 +449,15 @@ class KoboLibrary(object):
             for m in matches:
                 # print "m:{0}".format(m[0])
                 macaddrs.append(m[0].upper())
+        elif sys.platform.startswith('linux'):
+            for interface in os.listdir('/sys/class/net'):
+                with open('/sys/class/net/' + interface + '/address', 'r') as f:
+                    mac = f.read().strip().upper()
+                # some interfaces, like Tailscale's VPN interface, do not have a MAC address
+                if mac != '':
+                    macaddrs.append(mac)
         else:
-            # probably linux
+            # final fallback
-
             # let's try ip
             c = re.compile('\s(' + '[0-9a-f]{2}:' * 5 + '[0-9a-f]{2})(\s|$)', re.IGNORECASE)
             for line in os.popen('ip -br link'):

obok_plugin_ReadMe.txt

@@ -8,6 +8,8 @@ Installation
 ------------
 Open calibre's Preferences dialog.  Click on the "Plugins" button.  Next, click on the button, "Load plugin from file".  Navigate to the unzipped DeDRM_tools folder, find the file "obok_plugin.zip".  Click to select the file and select "Open".  Click "Yes" in the "Are you sure?" dialog box. Click the "OK" button in the "Success" dialog box.
 
+Note: This plugin requires the "wmic" component on Windows. On Windows 10 and below this will be available by default, on Windows 11 it needs to be explicitly enabled. Make sure that on your Windows 11 machine, under Settings -> System -> Optional features -> Add an optional feature -> View features, "WMIC" is enabled / activated, otherwise this plugin may not work correctly. 
+
 
 Customization
 -------------
@@ -16,7 +18,6 @@ No customization is required, except choosing which menus will show the plugin.
 
 Using the plugin
 ----------------
-
 Select the plugin's menu or icon from whichever part of the calibre interface you have chosen to have it. Follow the instructions in the dialog that appears.
 
 
@@ -29,5 +30,5 @@ If you find that the DeDRM plugin is not working for you (imported ebooks still
  - Once calibre has re-started, import the problem ebook.
  - Now close calibre.
 
-A log will appear that you can copy and paste into a comment at Apprentice Alf's blog, http://apprenticealf.wordpress.com/ or an issue at Apprentice Harper's repository, https://github.com/apprenticeharper/DeDRM_tools/issues . You should also give details of your computer, and how you obtained the ebook file.
+A log will appear that you can copy and paste into a GitHub issue at noDRM's repository, https://github.com/noDRM/DeDRM_tools/issues . You should also give details of your computer, and how you obtained the ebook file.