j` dZddlZddlZddlZddlmZmZmZmZmZm Z m Z m Z ddl m Z ddlmZddlmZmZmZddlmZmZddlmZdd lmZmZdd lmZdd lmZm Z m!Z!m"Z"m#Z#dd l$m%Z%m&Z&dd l'm(Z(m)Z)m*Z*m+Z+m,Z,ej-rddl.m/Z/gdZ0ej1e2Z3 d de4deej5dej6fdZ7Gdde%Z8Gddej5Z9Gdde8Z:GddZ; d de%dee<de:fdZ=dS)!z Utilities for writing PDF files. Contains code from the PyPDF2 project; see :ref:`here ` for the original license. N)DictIterableListOptionalSetTupleUnioncast)x509)generic)PubKeySecurityHandlerSecurityHandlerStandardSecurityHandler)DeveloperExtensionDevExtensionMultivalued)pdf_name)update_info_dictview_from_info_dict)DocumentMetadata)IndirectObjectExpectedPdfError PdfReadError PdfWriteError instance_test) PdfHandlerfind_inherited_value_in_tree)OBJSTREAM_FORBIDDEN ObjectStream PositionDict XRefStreamwrite_xref_tableFontSubsetCollection)BasePdfFileWriter PageObject PdfFileWritercopy_into_new_writerinit_xobject_dictionarycommand_stream resourcesreturncz|ptj}tjtdtjt t tjd||dftd|tdtdtdtdi|S) a Helper function to initialise form XObject dictionaries. .. note:: For utilities to handle image XObjects, see :mod:`.images`. :param command_stream: The XObject's raw appearance stream. :param box_width: The width of the XObject's bounding box. :param box_height: The height of the XObject's bounding box. :param resources: A resource dictionary to include with the form object. :return: A :class:`~.generic.StreamObject` representation of the form XObject. /BBoxg /Resources/Type/XObject/Subtype/Form stream_data)r DictionaryObject StreamObjectr ArrayObjectlistmap FloatObject)r* box_width box_heightr+s g/var/www/finuniver-perm.ru/html/portfolio/venv/lib/python3.11/site-packages/pyhanko/pdf_utils/writer.pyr)r)<s.7W577I   W  w2+c:y#-NOO   \ " "I W  x 33 Z (7"3"3 #    c xeZdZUdZdZ eed< dAdeej ej fdeej ej dfd ej d e def d Z d efd ZedefdZedefdZdZdeej ej dfdeej fdZdejdejfdZedeeeffdZdeejej ffdZdejfdZedejfdZ dZ!de"fdZ#dBd efd!Z$dej fd"Z% dCd#ee&dej fd$Z'dDd%Z(d&Z)d'e*fd(Z+d)e&fd*Z,d+e-fd,Z.d-Z/d.Z0d/Z1edej fd0Z2ed1Z3d2Z4dEd4efd5Z5dBd6efd7Z6d8Z7dFd9Z8 dFdejd#ee&dejfd:Z9 dAd;e:fd<Z; dGd=Zej d?ej defd@Z=dS)Hr%zBase class for PDF writers.)r" stream_xrefsrTrootinfoN document_id obj_id_startcPi|_t|_i|_||_|f|_t |_t|tj r||_ n| ||_ d|_ d|_d|_||_||_d}|Pt|tj s| |}n tj |j|j|}||_t+|_i|_d|_d|_dSNF)objectsr9object_streamsobjs_in_streams _lastobj_id_resolves_objs_fromset_allocated_placeholders isinstancer IndirectObject_root add_objectsecurity_handler_encrypt _encrypt_key _document_idrBidnum generation_infor_meta_font_resourcesdigest_aware_write_mac_handler_cls)selfrCrDrErFrBinfo_refs r>__init__zBasePdfFileWriter.__init__ssBD 26&&=?':> 14$ dG2 3 3 /DJJ..DJ;?:> -1'(  dG$:;; ??400"1J '7'9'9 BD"' $r?base_postscript_nameczddlm} |j|}n%#t$r||}||j|<YnwxYw|S)Nr"r#)font.apir$r\KeyError)r_rbr$fscs r>get_subset_collectionz'BasePdfFileWriter.get_subset_collectionsp222222 =&'; document_metazBasePdfFileWriter.document_metas zr?c|jr't|j}nt}|j|Sri)rZr get_objectrr[ view_over)r_bases r>document_meta_viewz$BasePdfFileWriter.document_meta_viewsL : &&tz'<'<'>'>??DD#%%Dz##D)))r?c.|j|kr ||_dSdSri)output_version)r_versions r>ensure_output_versionz'BasePdfFileWriter.ensure_output_versions&   ( (")D    ) (r?c|7t|tjs||x|_}n |x|_}|S)z Set the ``/Info`` entry of the document trailer. :param info: The new ``/Info`` dictionary, as an indirect reference. )rPr rQrSrZ)r_rDnew_infos r>set_infozBasePdfFileWriter.set_infosG  JtW5K$L$L $(OOD$9$9 9DJ$( (DJr?keyvaluect) Set a custom, unmanaged entry in the document trailer or cross-reference stream dictionary. .. warning:: Calling this method to set an entry that is managed by pyHanko internally (info dictionary, document catalog, etc.) has undefined results. :param key: Dictionary key to use in the trailer. :param value: Value to set NotImplementedErrorr_rxrys r>set_custom_trailer_entryz*BasePdfFileWriter.set_custom_trailer_entrys ""!r?cD|j}|dj|djfS)Nrr")rWoriginal_bytes)r_id_arrs r>rEzBasePdfFileWriter.document_ids#"ay')AAAr?obj_refcdS)a  Mark an object reference to be updated. 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This caveat does *not* apply to incremental updates added to existing documents. .. danger:: The PDF 2.0 standard mandates AES-256 in CBC mode, and also includes 12 bytes of known plaintext by design. This implies that a sufficiently knowledgeable attacker can inject arbitrary content into your encrypted files without knowledge of the password. Adding a digital signature to the encrypted document is **not** a foolproof way to deal with this either, since most viewers will still allow the document to be opened before signatures are validated, and therefore end users are still exposed to potentially malicious content. Until the standard supports authenticated encryption schemes, you should **never** rely on its encryption provisions if tampering is a concern. :param owner_pass: The desired owner password. :param user_pass: The desired user password (defaults to the owner password if not specified) :param kwargs: Other keyword arguments to be passed to :meth:`.StandardSecurityHandler.build_from_pw`. N)r build_from_pwr)r_ owner_pass user_passkwargsrs r>encryptzPdfFileWriter.encrypt9sEL% 2    %+   %%b)))))r? recipientsc bd|_tj|fi|}||dS)a= Mark this document to be encrypted with PDF 2.0 public key encryption. The certificates passed in should be RSA certificates. PyHanko defaults to AES-256 to encrypt the actual file contents. The seed used to derive the file encryption key is also encrypted using AES-256 and bundled in a CMS EnvelopedData object. The envelope key is then encrypted separately for each recipient, using their respective public keys. .. caution:: The caveats for :meth:`encrypt` also apply here. :param recipients: Certificates of the recipients that should be able to decrypt the document. :param kwargs: Other keyword arguments to be passed to :meth:`.PubKeySecurityHandler.build_from_certs`. rN)rrr build_from_certsr)r_rrrs r>encrypt_pubkeyzPdfFileWriter.encrypt_pubkeyds>*% " 3J I I& I I %%b)))))r?rxryc||j|<dS)r{N)rr~s r>rz&PdfFileWriter.set_custom_trailer_entry}s"-2$S)))r?c~||jt|dSri)updaterrr)r_rrs r>rzPdfFileWriter._populate_trailers6t3444 !!'*****r?)TTNri)rrurvrwrarrrr Certificaterr rlr{rrrrs@r>r'r's''>>>>>>4555)*)*)*)*V*d.>)?****22%2.5.?2222&+++++++++r?r'c eZdZdededeejejfde e fdZ dej dej fdZ dej fd Zd ejdej fd Zd Zd S)rDrArBrCrcL||_||_||_g|_||_dSri)rArBrqueued_referencesrC)r_rArBrCrs r>raz_ObjectImporter.__init__s6  $  +r?rr,cX||}|jr|j\}}|}||}t |t rd}n|j}|j|||j |j|S)N)rrX) _ingestrpoprmrPrrrBrSrX)r_rr[ source_ref target_ref source_objimportedrs r>rGz_ObjectImporter.import_objectsc""$ %)%;%?%?%A%A "J #..00J||J//H($788 -! !_  K " "Zz7G #   $ " r?czt|tjr|j}t|tjr|jSt|tjrfd|D} | d}| |d||d<n#ttf$rYnwxYwt|tjrRtj} ddlm}t||jr|j}n#t$$rYnwxYw|||jStj|St|tjr tjfd|DS|S) NcNi|]!\}}|dk ||"S)rrrOkvr_s r> z+_ObjectImporter._ingest..s:'+q!a;>N>N4<<??>N>N>Nr?rT)rrrrRc3BK|]}|VdSrir)rOrr_s r>rQz*_ObjectImporter._ingest..s-&D&D1t||A&D&D&D&D&D&Dr?)rPr DecryptedObjectProxy decryptedrQprocess_referencerr6roget_value_as_referencerFrmrerr7rrrrrSr8)r_rraw_dictmeta_refstm_clsrs` r>rz_ObjectImporter._ingests c77 8 8 -C c71 2 2' ))#-88 8 W5 6 6% /2yy{{H 55kBB((**556)-(>(>x(H(H%%45    #w344 :!.BBBBBB!#w'=>>9")"8"D wxc6FGGGG/999 W0 1 1 &&D&D&D&D&D&D&DDD DJs%AC**C>=C>("E EErc |j|S#t$rI|j}||j|<|j||jf|cYSwxYwri)rCrerBrrrr)r_rnew_idos r>rz!_ObjectImporter.process_referencesx %c* *   k6688G&-D s #  " ) )30A*B C C CNNN  s AA"!A"cddlm}d|jdD}|rtd|D]}|}t |tjsJfd| D}tj | dtj j j|d<jtj|d j|<dS) Nr)enumerate_sig_fieldscXg|]'\}}}t|tj |j(Sr)rPr rQr)rOfq_name field_value field_refs r> z=_ObjectImporter.preprocess_signature_data..sF   /i+w'=>>   !   r?T) filled_statuszZSource document contains filled signature fields--the copy operation will invalidate them.cNi|]!\}}|dk ||"S)rLrrs r>rz=_ObjectImporter.preprocess_signature_data.. s>Aq ##4<<??###r?rL)decrypt)r) sign.fieldsrrAloggerwarningrmrPr r6rorrEncryptedObjAccessRAWrrBrSrC)r_rsignature_dict_refsrsig_dictrs` r>preprocess_signature_dataz)_ObjectImporter.preprocess_signature_datasb 766666  3G3G 4444      NN2   '  C~~''Hh(@AA A A A$NN,,H %,$<  )C)G! %%H[ ! '+k&<&<(22'=''D s # #  r?N)rrurvrr%rr rrQrrrar{rGrrrrr?r>rDrDs + +" +G-w/EEF + \* + + + +!2w7H,*7,****XW%67;L$$$$$r?rD input_handler writer_kwargsc 8|pi}|ddtd ddi|}|j}|j}t|||t j|j|j|id}|| |j }|j|jf}||j |<d|vre |j d}n#t$rd}YnwxYw|Bt||id}| |} || |_|S) a Copy all objects in a given PDF handler into a new :class:`.PdfFileWriter`. This operation will attempt to preserve the document catalog of the original ``input_handler``. Very roughly, calling this function and then immediately invoking :meth:`~.BasePdfFileWriter.write` on the resulting writer should result in an equivalent document as far as presentation is concerned. As a general rule, behaviour that is controlled from outside the document catalog (e.g. encryption) or that requires byte-for-byte equivalence with the original (e.g. digital signatures) will not survive this translation. :param input_handler: :class:`.PdfHandler` to source objects from. :param writer_kwargs: Keyword arguments to pass to the writer. :return: New :class:`.PdfFileWriter` containing all objects from the input handler. rBFr)rXrYrN)rArBrCrrDrr) setdefaultr'rrDr rQrXrYrrGrCrIrrerSrZ) rrwinput_root_refoutput_root_refrH new_root_dictrr imported_infos r>r(r(sv2"'RM^U333 <>M  $o&; rwloggingrtypingrrrrrrr r asn1cryptor pyhanko.pdf_utilsr r r rrpyhanko.pdf_utils.extensionsrrpyhanko.pdf_utils.genericrpyhanko.pdf_utils.metadata.inforr pyhanko.pdf_utils.metadata.modelrpyhanko.pdf_utils.miscrrrrrpyhanko.pdf_utils.rw_commonrrpyhanko.pdf_utils.xrefrrrr r! TYPE_CHECKINGrdr$__all__ getLoggerrrr|r6r7r)r%r&r'rDdictr(rr?r>rs}  JJJJJJJJJJJJJJJJJJJJ%%%%%% /.....>=====QPPPPPPP /......     8 $ $59 $$$01 $   $$$$NKKKKK KKK\! ! ! ! ! )! ! ! H~+~+~+~+~+%~+~+~+B@@@@@@@@H@DJ J J .6tnJ J J J J J J r?