mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2026-03-20 04:58:56 +00:00
Ton of PDF DeDRM updates
- Support "Standard" and "Adobe.APS" encryptions - Support decrypting with owner password instead of user password - New function to return encryption filter name - Support for V=5, R=5 and R=6 PDF files - Support for AES256-encrypted PDF files - Disable broken cross-reference streams in output
This commit is contained in:
NoDRM
@@ -609,23 +609,14 @@ class DeDRM(FileTypePlugin):
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# No DRM?
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return self.postProcessEPUB(inf.name)
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def PDFIneptDecrypt(self, path_to_ebook):
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# Sub function to prevent PDFDecrypt from becoming too large ...
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import calibre_plugins.dedrm.prefs as prefs
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import calibre_plugins.dedrm.ineptpdf as ineptpdf
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import calibre_plugins.dedrm.lcpdedrm as lcpdedrm
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dedrmprefs = prefs.DeDRM_Prefs()
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if (lcpdedrm.isLCPbook(path_to_ebook)):
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try:
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retval = lcpdedrm.decryptLCPbook(path_to_ebook, dedrmprefs['lcp_passphrases'], self)
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except:
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print("Looks like that didn't work:")
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raise
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return retval
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# Not an LCP book, do the normal Adobe handling.
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book_uuid = None
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try:
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# Try to figure out which Adobe account this book is licensed for.
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@@ -633,12 +624,8 @@ class DeDRM(FileTypePlugin):
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except:
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pass
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if book_uuid is None:
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print("{0} v{1}: {2} is a PDF ebook".format(PLUGIN_NAME, PLUGIN_VERSION, os.path.basename(path_to_ebook)))
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else:
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print("{0} v{1}: {2} is a PDF ebook for UUID {3}".format(PLUGIN_NAME, PLUGIN_VERSION, os.path.basename(path_to_ebook), book_uuid))
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if book_uuid is not None:
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if book_uuid is not None:
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print("{0} v{1}: {2} is a PDF ebook (EBX) for UUID {3}".format(PLUGIN_NAME, PLUGIN_VERSION, os.path.basename(path_to_ebook), book_uuid))
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# Check if we have a key for that UUID
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for keyname, userkeyhex in dedrmprefs['adeptkeys'].items():
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if not book_uuid.lower() in keyname.lower():
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@@ -800,10 +787,89 @@ class DeDRM(FileTypePlugin):
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print("{0} v{1}: Failed to decrypt with key {2:s} after {3:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION,keyname,time.time()-self.starttime))
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def PDFStandardDecrypt(self, path_to_ebook):
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# Sub function to prevent PDFDecrypt from becoming too large ...
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import calibre_plugins.dedrm.prefs as prefs
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import calibre_plugins.dedrm.ineptpdf as ineptpdf
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dedrmprefs = prefs.DeDRM_Prefs()
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# Something went wrong with decryption.
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print("{0} v{1}: Ultimately failed to decrypt after {2:.1f} seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md".format(PLUGIN_NAME, PLUGIN_VERSION,time.time()-self.starttime))
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raise DeDRMError("{0} v{1}: Ultimately failed to decrypt after {2:.1f} seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/DeDRM_tools/blob/master/FAQs.md".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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# Attempt to decrypt PDF with each encryption key (generated or provided).
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i = -1
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for userpassword in [""] + dedrmprefs['adobe_pdf_passphrases']:
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# Try the empty password, too.
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i = i + 1
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userpassword = bytearray(userpassword, "utf-8")
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if i == 0:
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print("{0} v{1}: Trying empty password ... ".format(PLUGIN_NAME, PLUGIN_VERSION), end="")
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else:
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print("{0} v{1}: Trying password {2} ... ".format(PLUGIN_NAME, PLUGIN_VERSION, i), end="")
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of = self.temporary_file(".pdf")
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# Give the user password, ebook and TemporaryPersistent file to the decryption function.
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msg = False
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try:
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result = ineptpdf.decryptBook(userpassword, path_to_ebook, of.name)
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print("done")
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msg = True
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except ineptpdf.ADEPTInvalidPasswordError:
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print("invalid password".format(PLUGIN_NAME, PLUGIN_VERSION))
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msg = True
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result = 1
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except:
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print("exception\n{0} v{1}: Exception when decrypting after {2:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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msg = True
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traceback.print_exc()
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result = 1
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if not msg:
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print("error\n{0} v{1}: Failed to decrypt after {2:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION,time.time()-self.starttime))
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of.close()
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if result == 0:
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# Decryption was successful.
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# Return the modified PersistentTemporary file to calibre.
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print("{0} v{1}: Successfully decrypted with password {3} after {2:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION,time.time()-self.starttime, i))
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return of.name
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print("{0} v{1}: Didn't manage to decrypt PDF. Make sure the correct password is entered in the settings.".format(PLUGIN_NAME, PLUGIN_VERSION))
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def PDFDecrypt(self,path_to_ebook):
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import calibre_plugins.dedrm.prefs as prefs
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import calibre_plugins.dedrm.ineptpdf as ineptpdf
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import calibre_plugins.dedrm.lcpdedrm as lcpdedrm
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dedrmprefs = prefs.DeDRM_Prefs()
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if (lcpdedrm.isLCPbook(path_to_ebook)):
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try:
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retval = lcpdedrm.decryptLCPbook(path_to_ebook, dedrmprefs['lcp_passphrases'], self)
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except:
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print("Looks like that didn't work:")
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raise
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return retval
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# Not an LCP book, do the normal Adobe handling.
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pdf_encryption = ineptpdf.getPDFencryptionType(path_to_ebook)
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if pdf_encryption is None:
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print("{0} v{1}: {2} is an unencrypted PDF file - returning as is.".format(PLUGIN_NAME, PLUGIN_VERSION, os.path.basename(path_to_ebook)))
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return path_to_ebook
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print("{0} v{1}: {2} is a PDF ebook with encryption {3}".format(PLUGIN_NAME, PLUGIN_VERSION, os.path.basename(path_to_ebook), pdf_encryption))
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if pdf_encryption == "EBX_HANDLER":
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# Adobe eBook / ADEPT (normal or B&N)
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return self.PDFIneptDecrypt(path_to_ebook)
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elif pdf_encryption == "Standard" or pdf_encryption == "Adobe.APS":
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return self.PDFStandardDecrypt(path_to_ebook)
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elif pdf_encryption == "FOPN_fLock" or pdf_encryption == "FOPN_foweb":
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print("{0} v{1}: FileOpen encryption '{2}' is unsupported.".format(PLUGIN_NAME, PLUGIN_VERSION, pdf_encryption))
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print("{0} v{1}: Try the standalone script from the 'Tetrachroma_FileOpen_ineptpdf' folder in the Github repo.".format(PLUGIN_NAME, PLUGIN_VERSION))
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else:
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print("{0} v{1}: Encryption '{2}' is unsupported.".format(PLUGIN_NAME, PLUGIN_VERSION, pdf_encryption))
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return path_to_ebook
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def KindleMobiDecrypt(self,path_to_ebook):
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@@ -815,7 +881,7 @@ class DeDRM(FileTypePlugin):
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# extracted to the appropriate places beforehand these routines
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# look for them.
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import calibre_plugins.dedrm.prefs as prefs
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import calibre_plugins.dedrm.k4mobidedrm
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import calibre_plugins.dedrm.k4mobidedrm as k4mobidedrm
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dedrmprefs = prefs.DeDRM_Prefs()
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pids = dedrmprefs['pids']
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@@ -883,7 +949,7 @@ class DeDRM(FileTypePlugin):
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def eReaderDecrypt(self,path_to_ebook):
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import calibre_plugins.dedrm.prefs as prefs
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import calibre_plugins.dedrm.erdr2pml
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import calibre_plugins.dedrm.erdr2pml as erdr2pml
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dedrmprefs = prefs.DeDRM_Prefs()
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# Attempt to decrypt epub with each encryption key (generated or provided).
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@@ -927,7 +993,7 @@ class DeDRM(FileTypePlugin):
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decrypted_ebook = self.eReaderDecrypt(path_to_ebook)
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pass
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elif booktype == 'pdf':
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# Adobe Adept PDF (hopefully)
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# Adobe PDF (hopefully)
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decrypted_ebook = self.PDFDecrypt(path_to_ebook)
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pass
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elif booktype == 'epub':
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