����JFIFXX�����    $.' ",#(7),01444'9=82<.342  2!!22222222222222222222222222222222222222222222222222����"��4�� ���,�PG"Z_�4�˷����kjز�Z�,F+��_z�,�© �����zh6�٨�ic�fu���#ډb���_�N�?��wQ���5-�~�I���8����TK<5o�Iv-�����k�_U_�����~b�M��d����Ӝ�U�Hh��?]��E�w��Q���k�{��_}qFW7HTՑ��Y��F�?_�'ϔ��_�Ջt��=||I ��6�έ"�����D���/[�k�9���Y�8ds|\���Ҿp6�Ҵ���]��.����6�z<�v��@]�i%��$j��~�g��J>��no����pM[me�i$[����s�o�ᘨ�˸ nɜG-�ĨU�ycP�3.DB�li�;��hj���x7Z^�N�h������N3u{�:j�x�힞��#M&��jL P@_���� P��&��o8������9�����@Sz6�t7#O�ߋ �s}Yf�T���lmr����Z)'N��k�۞p����w\�Tȯ?�8`�O��i{wﭹW�[�r�� ��Q4F�׊���3m&L�=��h3����z~��#�\�l :�F,j@�� ʱ�wQT����8�"kJO���6�֚l����}���R�>ډK���]��y����&����p�}b��;N�1�m�r$�|��7�>e�@B�TM*-iH��g�D�)� E�m�|�ؘbҗ�a��Ҿ����t4���o���G��*oCN�rP���Q��@z,|?W[0�����:�n,jWiE��W��$~/�hp\��?��{(�0���+�Y8rΟ�+����>S-S����VN;�}�s?.����� w�9��˟<���Mq4�Wv'��{)0�1mB��V����W[�����8�/<� �%���wT^�5���b��)iM� pg�N�&ݝ��VO~�q���u���9� ����!��J27����$O-���! �:�%H��� ـ����y�ΠM=t{!S�� oK8������t<����è:a������[�����ա�H���~��w��Qz`�po�^ ����Q��n� �,uu�C�$ ^���,������8�#��:�6��e�|~���!�3�3.�\0��q��o�4`.|� ����y�Q�`~;�d�ׯ,��O�Zw�������`73�v�܋�<���Ȏ�� ـ4k��5�K�a�u�=9Yd��$>x�A�&�� j0� ���vF��� Y�|�y��� ~�6�@c��1vOp�Ig����4��l�OD���L����� R���c���j�_�uX6��3?nk��Wy�f;^*B� ��@�~a�`��Eu������+���6�L��.ü>��}y���}_�O�6�͐�:�YrG�X��kG�����l^w���~㒶sy��Iu�!� W ��X��N�7BV��O��!X�2����wvG�R�f�T#�����t�/?���%8�^�W�aT��G�cL�M���I��(J����1~�8�?aT ���]����AS�E��(��*E}� 2��#I/�׍qz��^t�̔���b�Yz4x���t�){ OH��+(E��A&�N�������XT��o��"�XC��'���)}�J�z�p� ��~5�}�^����+�6����w��c��Q�|Lp�d�H��}�(�.|����k��c4^�"�����Z?ȕ ��a<�L�!039C� �Eu�C�F�Ew�ç ;�n?�*o���B�8�bʝ���'#Rqf���M}7����]����s2tcS{�\icTx;�\��7K���P���ʇ Z O-��~��c>"��?�������P��E��O�8��@�8��G��Q�g�a�Վ���󁶠�䧘��_%#r�>�1�z�a��eb��qcPѵ��n���#L��� =��׀t� L�7�`��V���A{�C:�g���e@�w1 Xp3�c3�ġ����p��M"'-�@n4���fG��B3�DJ�8[Jo�ߐ���gK)ƛ��$���� ���8�3�����+���� �����6�ʻ���� ���S�kI�*KZlT _`���?��K����QK�d����B`�s}�>���`��*�>��,*@J�d�oF*����弝��O}�k��s��]��y�ߘ��c1G�V���<=�7��7����6�q�PT��tXԀ�!9*4�4Tހ3XΛex�46���Y��D ����� �BdemDa����\�_l,��G�/���֌7���Y�](�xTt^%�GE�����4�}bT���ڹ�����;Y)���B�Q��u��>J/J �⮶.�XԄ��j�ݳ�+E��d ��r�5�_D�1 ��o�� �B�x�΢�#���<��W�����8���R6�@g�M�.��� dr�D��>(otU��@x=��~v���2� ӣ�d�oBd��3�eO�6�㣷�����ݜ6��6Y��Qz`��S��{���\P�~z m5{J/L��1������<�e�ͅPu�b�]�ϔ���'������f�b� Zpw��c`"��i���BD@:)ִ�:�]��hv�E�w���T�l��P���"Ju�}��وV J��G6��. J/�Qgl߭�e�����@�z�Zev2u�)]կ�����7x���s�M�-<ɯ�c��r�v�����@��$�ޮ}lk���a���'����>x��O\�ZFu>�����ck#��&:��`�$�ai�>2Δ����l���oF[h��lE�ܺ�Πk:)���`�� $[6�����9�����kOw�\|���8}������ބ:��񶐕��I�A1/�=�2[�,�!��.}gN#�u����b��� ~��݊��}34q����d�E��Lc��$��"�[q�U�硬g^��%B �z���r�pJ�ru%v\h1Y�ne`ǥ:g���pQM~�^�Xi� ��`S�:V29.�P���V�?B�k�� AEvw%�_�9C�Q����wKekPؠ�\�;Io d�{ ߞo�c1eP����\� `����E=���@K<�Y���eڼ�J���w����{av�F�'�M�@/J��+9p���|]�����Iw &`��8���&M�hg��[�{��Xj��%��Ӓ�$��(����ʹN���<>�I���RY���K2�NPlL�ɀ)��&e����B+ь����( � �JTx���_?EZ� }@ 6�U���뙢ط�z��dWI�n` D����噥�[��uV��"�G&Ú����2g�}&m��?ċ�"����Om#��������� ��{�ON��"S�X��Ne��ysQ���@Fn��Vg���dX�~nj�]J�<�K]:��FW��b�������62�=��5f����JKw��bf�X�55��~J �%^����:�-�QIE��P��v�nZum� z � ~ə ���� ���ة����;�f��\v���g�8�1��f24;�V���ǔ�)����9���1\��c��v�/'Ƞ�w�������$�4�R-��t���� e�6�/�ġ �̕Ecy�J���u�B���<�W�ַ~�w[B1L۲�-JS΂�{���΃������A��20�c#��@ 0!1@AP"#2Q`$3V�%45a6�FRUq��� ����^7ׅ,$n�������+��F�`��2X'��0vM��p�L=������5��8������u�p~���.�`r�����\���O��,ư�0oS ��_�M�����l���4�kv\JSd���x���SW�<��Ae�IX����������$I���w�:S���y���›R��9�Q[���,�5�;�@]�%���u�@ *ro�lbI �� ��+���%m:�͇ZV�����u�̉����θau<�fc�.����{�4Ա� �Q����*�Sm��8\ujqs]{kN���)qO�y�_*dJ�b�7���yQqI&9�ԌK!�M}�R�;������S�T���1���i[U�ɵz�]��U)V�S6���3$K{�ߊ<�(� E]Զ[ǼENg�����'�\?#)Dkf��J���o��v���'�%ƞ�&K�u�!��b�35LX�Ϸ��63$K�a�;�9>,R��W��3�3� d�JeTYE.Mϧ��-�o�j3+y��y^�c�������VO�9NV\nd�1 ��!͕_)a�v;����թ�M�lWR1��)El��P;��yوÏ�u 3�k�5Pr6<�⒲l�!˞*��u־�n�!�l:����UNW ��%��Chx8vL'��X�@��*��)���̮��ˍ��� ���D-M�+J�U�kvK����+�x8��cY������?�Ԡ��~3mo��|�u@[XeY�C�\Kp�x8�oC�C�&����N�~3-H���� ��MX�s�u<`���~"WL��$8ξ��3���a�)|:@�m�\���^�`�@ҷ)�5p+��6���p�%i)P M���ngc�����#0Aruz���RL+xSS?���ʮ}()#�t��mˇ!��0}}y����<�e� �-ή�Ԩ��X������ MF���ԙ~l L.3���}�V뽺�v�����멬��Nl�)�2����^�Iq��a��M��qG��T�����c3#������3U�Ǎ���}��לS�|qa��ڃ�+���-��2�f����/��bz��ڐ�� �ݼ[2�ç����k�X�2�* �Z�d���J�G����M*9W���s{��w���T��x��y,�in�O�v��]���n����P�$�JB@=4�OTI�n��e�22a\����q�d���%�$��(���:���: /*�K[PR�fr\nڙdN���F�n�$�4�[�� U�zƶ����� �mʋ���,�ao�u 3�z� �x��Kn����\[��VFmbE;�_U��&V�Gg�]L�۪&#n%�$ɯ�dG���D�TI=�%+AB�Ru#��b4�1�»x�cs�YzڙJG��f��Il��d�eF'T� iA��T���uC�$����Y��H?����[!G`}���ͪ� �纤Hv\������j�Ex�K���!���OiƸ�Yj�+u-<���'q����uN�*�r\��+�]���<�wOZ.fp�ێ��,-*)V?j-kÊ#�`�r��dV����(�ݽBk�����G�ƛk�QmUڗe��Z���f}|����8�8��a���i��3'J�����~G_�^���d�8w������ R�`(�~�.��u���l�s+g�bv���W���lGc}��u���afE~1�Ue������Z�0�8�=e�� f@/�jqEKQQ�J��oN��J���W5~M>$6�Lt�;$ʳ{���^��6�{����v6���ķܰg�V�cnn �~z�x�«�,2�u�?cE+Ș�H؎�%�Za�)���X>uW�Tz�Nyo����s���FQƤ��$��*�&�LLXL)�1�" L��eO��ɟ�9=���:t��Z���c��Ž���Y?�ӭV�wv�~,Y��r�ۗ�|�y��GaF�����C�����.�+� ���v1���fήJ�����]�S��T��B��n5sW}y�$��~z�'�c ��8 ��� ,! �p��VN�S��N�N�q��y8z˱�A��4��*��'������2n<�s���^ǧ˭P�Jޮɏ�U�G�L�J�*#��<�V��t7�8����TĜ>��i}K%,���)[��z�21z ?�N�i�n1?T�I�R#��m-�����������������1����lA�`��fT5+��ܐ�c�q՝��ʐ��,���3�f2U�եmab��#ŠdQ�y>\��)�SLY����w#��.���ʑ�f��� ,"+�w�~�N�'�c�O�3F�������N<���)j��&��,-� �љ���֊�_�zS���TǦ����w�>��?�������n��U仆�V���e�����0���$�C�d���rP �m�׈e�Xm�Vu� �L��.�bֹ��� �[Դaզ���*��\y�8�Է:�Ez\�0�Kq�C b��̘��cө���Q��=0Y��s�N��S.���3.���O�o:���#���v7�[#߫ ��5�܎�L���Er4���9n��COWlG�^��0k�%<���ZB���aB_���������'=��{i�v�l�$�uC���mƎҝ{�c㱼�y]���W�i ��ߧc��m�H� m�"�"�����;Y�ߝ�Z�Ǔ�����:S#��|}�y�,/k�Ld� TA�(�AI$+I3��;Y*���Z��}|��ӧO��d�v��..#:n��f>�>���ȶI�TX��� 8��y����"d�R�|�)0���=���n4��6ⲑ�+��r<�O�܂~zh�z����7ܓ�HH�Ga롏���nCo�>������a ���~]���R���̲c?�6(�q�;5%� |�uj�~z8R=X��I�V=�|{v�Gj\gc��q����z�؋%M�ߍ����1y��#��@f^���^�>N�����#x#۹��6�Y~�?�dfPO��{��P�4��V��u1E1J �*|���%���JN��`eWu�zk M6���q t[�� ��g�G���v��WIG��u_ft����5�j�"�Y�:T��ɐ���*�;� e5���4����q$C��2d�}���� _S�L#m�Yp��O�.�C�;��c����Hi#֩%+) �Ӎ��ƲV���SYź��g |���tj��3�8���r|���V��1#;.SQ�A[���S������#���`n�+���$��$I �P\[�@�s��(�ED�z���P��])8�G#��0B��[ى��X�II�q<��9�~[Z멜�Z�⊔IWU&A>�P~�#��dp<�?����7���c��'~���5 ��+$���lx@�M�dm��n<=e�dyX��?{�|Aef ,|n3�<~z�ƃ�uۧ�����P��Y,�ӥQ�*g�#먙R�\���;T��i,��[9Qi歉����c>]9�� ��"�c��P�� �Md?٥��If�ت�u��k��/����F��9�c*9��Ǎ:�ØF���z�n*�@|I�ށ9����N3{'��[�'ͬ�Ҳ4��#}��!�V� Fu��,�,mTIk���v C�7v���B�6k�T9��1�*l� '~��ƞF��lU��'�M ����][ΩũJ_�{�i�I�n��$���L�� j��O�dx�����kza۪��#�E��Cl����x˘�o�����V���ɞ�ljr��)�/,�߬h�L��#��^��L�ф�,íMƁe�̩�NB�L�����iL����q�}��(��q��6IçJ$�W�E$��:������=#����(�K�B����zђ <��K(�N�۫K�w��^O{!����)�H���>x�������lx�?>Պ�+�>�W���,Ly!_�D���Ō�l���Q�!�[ �S����J��1��Ɛ�Y}��b,+�Lo�x�ɓ)����=�y�oh�@�꥟/��I��ѭ=��P�y9��� �ۍYӘ�e+�p�Jnϱ?V\SO%�(�t� ���=?MR�[Ș�����d�/ ��n�l��B�7j� ��!�;ӥ�/�[-���A�>�dN�sLj ��,ɪv��=1c�.SQ�O3�U���ƀ�ܽ�E����������̻��9G�ϷD�7(�}��Ävӌ\�y�_0[w ���<΍>����a_��[0+�L��F.�޺��f�>oN�T����q;���y\��bՃ��y�jH�<|q-eɏ�_?_9+P���Hp$�����[ux�K w�Mw��N�ی'$Y2�=��q���KB��P��~������Yul:�[<����F1�2�O���5=d����]Y�sw:���Ϯ���E��j,_Q��X��z`H1,#II ��d�wr��P˂@�ZJV����y$�\y�{}��^~���[:N����ߌ�U�������O��d�����ؾe��${p>G��3c���Ė�lʌ�� ת��[��`ϱ�-W����dg�I��ig2��� ��}s ��ؤ(%#sS@���~���3�X�nRG�~\jc3�v��ӍL��M[JB�T��s3}��j�Nʖ��W����;7��ç?=X�F=-�=����q�ߚ���#���='�c��7���ڑW�I(O+=:uxq�������������e2�zi+�kuG�R��������0�&e�n���iT^J����~\jy���p'dtG��s����O��3����9* �b#Ɋ�� p������[Bws�T�>d4�ۧs���nv�n���U���_�~,�v����ƜJ1��s�� �QIz��)�(lv8M���U=�;����56��G���s#�K���MP�=��LvyGd��}�VwWBF�'�à �?MH�U�g2�� ����!�p�7Q��j��ڴ����=��j�u��� Jn�A s���uM������e��Ɔ�Ҕ�!)'��8Ϣ�ٔ��ޝ(��Vp���צ֖d=�IC�J�Ǡ{q������kԭ�߸���i��@K����u�|�p=..�*+����x�����z[Aqġ#s2a�Ɗ���RR�)*HRsi�~�a &f��M��P����-K�L@��Z��Xy�'x�{}��Zm+���:�)�) IJ�-i�u���� ���ܒH��'�L(7�y�GӜq���� j��� 6ߌg1�g�o���,kر���tY�?W,���p���e���f�OQS��!K�۟cҒA�|ս�j�>��=⬒��˧L[�� �߿2JaB~R��u�:��Q�] �0H~���]�7��Ƽ�I���(}��cq '�ήET���q�?f�ab���ӥvr� �)o��-Q��_'����ᴎo��K������;��V���o��%���~OK ����*��b�f:���-ťIR��`B�5!RB@���ï�� �u �̯e\�_U�_������� g�ES��3�������QT��a����x����U<~�c?�*�#]�MW,[8O�a�x��]�1bC|踤�P��lw5V%�)�{t�<��d��5���0i�XSU��m:��Z�┵�i�"��1�^B�-��P�hJ��&)O��*�D��c�W��vM��)����}���P��ܗ-q����\mmζZ-l@�}��a��E�6��F�@��&Sg@���ݚ�M����� ȹ 4����#p�\H����dYDo�H���"��\��..R�B�H�z_�/5˘����6��KhJR��P�mƶi�m���3�,#c�co��q�a)*Pt����R�m�k�7x�D�E�\Y�閣_X�<���~�)���c[[�BP����6�Yq���S��0����%_����;��Àv�~�| VS؇ ��'O0��F0��\���U�-�d@�����7�SJ*z��3n��y��P����O���������m�~�P�3|Y��ʉr#�C�<�G~�.,! ���bqx���h~0=��!ǫ�jy����l�O,�[B��~��|9��ٱ����Xly�#�i�B��g%�S��������tˋ���e���ې��\[d�t)��.+u�|1 ������#�~Oj����hS�%��i.�~X���I�H�m��0n���c�1uE�q��cF�RF�o���7� �O�ꮧ� ���ۛ{��ʛi5�rw?׌#Qn�TW��~?y$��m\�\o����%W� ?=>S�N@�� �Ʈ���R����N�)�r"C�:��:����� �����#��qb��Y�. �6[��2K����2u�Ǧ�HYR��Q�MV��� �G�$��Q+.>�����nNH��q�^��� ����q��mM��V��D�+�-�#*�U�̒ ���p욳��u:�������IB���m���PV@O���r[b= �� ��1U�E��_Nm�yKbN�O���U�}�the�`�|6֮P>�\2�P�V���I�D�i�P�O;�9�r�mAHG�W�S]��J*�_�G��+kP�2����Ka�Z���H�'K�x�W�MZ%�O�YD�Rc+o��?�q��Ghm��d�S�oh�\�D�|:W������UA�Qc yT�q������~^�H��/��#p�CZ���T�I�1�ӏT����4��"�ČZ�����}��`w�#�*,ʹ�� ��0�i��課�Om�*�da��^gJ݅{���l�e9uF#T�ֲ��̲�ٞC"�q���ߍ ոޑ�o#�XZTp����@ o�8��(jd��xw�]�,f���`~�|,s��^����f�1���t��|��m�򸄭/ctr��5s��7�9Q�4�H1꠲BB@l9@���C�����+�wp�xu�£Yc�9��?`@#�o�mH�s2��)�=��2�.�l����jg�9$�Y�S�%*L������R�Y������7Z���,*=�䷘$�������arm�o�ϰ���UW.|�r�uf����IGw�t����Zwo��~5 ��YյhO+=8fF�)�W�7�L9lM�̘·Y���֘YLf�큹�pRF���99.A �"wz��=E\Z���'a� 2��Ǚ�#;�'}�G���*��l��^"q��+2FQ� hj��kŦ��${���ޮ-�T�٭cf�|�3#~�RJ����t��$b�(R��(����r���dx� >U b�&9,>���%E\� Ά�e�$��'�q't��*�א���ެ�b��-|d���SB�O�O��$�R+�H�)�܎�K��1m`;�J�2�Y~9��O�g8=vqD`K[�F)k�[���1m޼c��n���]s�k�z$@��)!I �x՝"v��9=�ZA=`Ɠi �:�E��)`7��vI��}d�YI�_ �o�:ob���o ���3Q��&D&�2=�� �Ά��;>�h����y.*ⅥS������Ӭ�+q&����j|UƧ����}���J0��WW< ۋS�)jQR�j���Ư��rN)�Gű�4Ѷ(�S)Ǣ�8��i��W52���No˓� ۍ%�5brOn�L�;�n��\G����=�^U�dI���8$�&���h��'���+�(������cȁ߫k�l��S^���cƗjԌE�ꭔ��gF���Ȓ��@���}O���*;e�v�WV���YJ\�]X'5��ղ�k�F��b 6R�o՜m��i N�i����>J����?��lPm�U��}>_Z&�KK��q�r��I�D�Չ~�q�3fL�:S�e>���E���-G���{L�6p�e,8��������QI��h��a�Xa��U�A'���ʂ���s�+טIjP�-��y�8ۈZ?J$��W�P� ��R�s�]��|�l(�ԓ��sƊi��o(��S0��Y� 8�T97.�����WiL��c�~�dxc�E|�2!�X�K�Ƙਫ਼�$((�6�~|d9u+�qd�^3�89��Y�6L�.I�����?���iI�q���9�)O/뚅����O���X��X�V��ZF[�یgQ�L��K1���RҖr@v�#��X�l��F���Нy�S�8�7�kF!A��sM���^rkp�jP�DyS$N���q��nxҍ!U�f�!eh�i�2�m���`�Y�I�9r�6� �TF���C}/�y�^���Η���5d�'��9A-��J��>{�_l+�`��A���[�'��յ�ϛ#w:݅�%��X�}�&�PSt�Q�"�-��\縵�/����$Ɨh�Xb�*�y��BS����;W�ջ_mc�����vt?2}1�;qS�d�d~u:2k5�2�R�~�z+|HE!)�Ǟl��7`��0�<�,�2*���Hl-��x�^����'_TV�gZA�'j� ^�2Ϊ��N7t�����?w�� �x1��f��Iz�C-Ȗ��K�^q�;���-W�DvT�7��8�Z�������� hK�(P:��Q- �8�n�Z���܃e貾�<�1�YT<�,�����"�6{/ �?�͟��|1�:�#g��W�>$����d��J��d�B��=��jf[��%rE^��il:��B���x���Sּ�1հ��,�=��*�7 fcG��#q� �eh?��2�7�����,�!7x��6�n�LC�4x��},Geǝ�tC.��vS �F�43��zz\��;QYC,6����~;RYS/6���|2���5���v��T��i����������mlv��������&� �nRh^ejR�LG�f���? �ۉҬܦƩ��|��Ȱ����>3����!v��i�ʯ�>�v��オ�X3e���_1z�Kȗ\<������!�8���V��]��?b�k41�Re��T�q��mz��TiOʦ�Z��Xq���L������q"+���2ۨ��8}�&N7XU7Ap�d�X��~�׿��&4e�o�F��� �H����O���č�c�� 懴�6���͉��+)��v;j��ݷ�� �UV�� i��� j���Y9GdÒJ1��詞�����V?h��l����l�cGs�ځ�������y�Ac�����\V3�? �� ܙg�>qH�S,�E�W�[�㺨�uch�⍸�O�}���a��>�q�6�n6����N6�q������N ! 1AQaq�0@����"2BRb�#Pr���3C`��Scst���$4D���%Td�� ?���N����a��3��m���C���w��������xA�m�q�m���m������$����4n淿t'��C"w��zU=D�\R+w�p+Y�T�&�պ@��ƃ��3ޯ?�Aﶂ��aŘ���@-�����Q�=���9D��ռ�ѻ@��M�V��P��܅�G5�f�Y<�u=,EC)�<�Fy'�"�&�չ�X~f��l�KԆV��?�� �W�N����=(� �;���{�r����ٌ�Y���h{�١������jW����P���Tc�����X�K�r��}���w�R��%��?���E��m�� �Y�q|����\lEE4���r���}�lsI�Y������f�$�=�d�yO����p�����yBj8jU�o�/�S��?�U��*������ˍ�0������u�q�m [�?f����a�� )Q�>����6#������� ?����0UQ����,IX���(6ڵ[�DI�MNލ�c&���υ�j\��X�R|,4��� j������T�hA�e��^���d���b<����n�� �즇�=!���3�^�`j�h�ȓr��jẕ�c�,ٞX����-����a�ﶔ���#�$��]w�O��Ӫ�1y%��L�Y<�wg#�ǝ�̗`�x�xa�t�w��»1���o7o5��>�m뭛C���Uƃߜ}�C���y1Xνm�F8�jI���]����H���ۺиE@I�i;r�8ӭ����V�F�Շ| ��&?�3|x�B�MuS�Ge�=Ӕ�#BE5G�����Y!z��_e��q�р/W>|-�Ci߇�t�1ޯќd�R3�u��g�=0 5��[?�#͏��q�cf���H��{ ?u�=?�?ǯ���}Z��z���hmΔ�BFTW�����<�q�(v� ��!��z���iW]*�J�V�z��gX֧A�q�&��/w���u�gYӘa���; �i=����g:��?2�dž6�ى�k�4�>�Pxs����}������G�9��3 ���)gG�R<>r h�$��'nc�h�P��Bj��J�ҧH� -��N1���N��?��~��}-q!=��_2hc�M��l�vY%UE�@|�v����M2�.Y[|y�"Eï��K�ZF,�ɯ?,q�?v�M 80jx�"�;�9vk�����+ ֧�� �ȺU��?�%�vcV��mA�6��Qg^M����A}�3�nl� QRN�l8�kkn�'�����(��M�7m9و�q���%ޟ���*h$Zk"��$�9��: �?U8�Sl��,,|ɒ��xH(ѷ����Gn�/Q�4�P��G�%��Ա8�N��!� �&�7�;���eKM7�4��9R/%����l�c>�x;������>��C�:�����t��h?aKX�bhe�ᜋ^�$�Iհ �hr7%F$�E��Fd���t��5���+�(M6�t����Ü�UU|zW�=a�Ts�Tg������dqP�Q����b'�m���1{|Y����X�N��b �P~��F^F:����k6�"�j!�� �I�r�`��1&�-$�Bevk:y���#yw��I0��x��=D�4��tU���P�ZH��ڠ底taP��6����b>�xa����Q�#� WeF��ŮNj�p�J* mQ�N����*I�-*�ȩ�F�g�3 �5��V�ʊ�ɮ�a��5F���O@{���NX��?����H�]3��1�Ri_u��������ѕ�� ����0��� F��~��:60�p�͈�S��qX#a�5>���`�o&+�<2�D����: �������ڝ�$�nP���*)�N�|y�Ej�F�5ټ�e���ihy�Z �>���k�bH�a�v��h�-#���!�Po=@k̆IEN��@��}Ll?j�O������߭�ʞ���Q|A07x���wt!xf���I2?Z��<ץ�T���cU�j��]��陎Ltl �}5�ϓ��$�,��O�mˊ�;�@O��jE��j(�ا,��LX���LO���Ц�90�O �.����a��nA���7������j4 ��W��_ٓ���zW�jcB������y՗+EM�)d���N�g6�y1_x��p�$Lv:��9�"z��p���ʙ$��^��JԼ*�ϭ����o���=x�Lj�6�J��u82�A�H�3$�ٕ@�=Vv�]�'�qEz�;I˼��)��=��ɯ���x �/�W(V���p�����$ �m�������u�����񶤑Oqˎ�T����r��㠚x�sr�GC��byp�G��1ߠ�w e�8�$⿄����/�M{*}��W�]˷.�CK\�ުx���/$�WPw���r� |i���&�}�{�X� �>��$-��l���?-z���g����lΆ���(F���h�vS*���b���߲ڡn,|)mrH[���a�3�ר�[1��3o_�U�3�TC�$��(�=�)0�kgP���� ��u�^=��4 �WYCҸ:��vQ�ר�X�à��tk�m,�t*��^�,�}D*� �"(�I��9R����>`�`��[~Q]�#af��i6l��8���6�:,s�s�N6�j"�A4���IuQ��6E,�GnH��zS�HO�uk�5$�I�4��ؤ�Q9�@��C����wp�BGv[]�u�Ov���0I4���\��y�����Q�Ѹ��~>Z��8�T��a��q�ޣ;z��a���/��S��I:�ܫ_�|������>=Z����8:�S��U�I�J��"IY���8%b8���H��:�QO�6�;7�I�S��J��ҌAά3��>c���E+&jf$eC+�z�;��V����� �r���ʺ������my�e���aQ�f&��6�ND��.:��NT�vm�<- u���ǝ\MvZY�N�NT��-A�>jr!S��n�O 1�3�Ns�%�3D@���`������ܟ 1�^c<���� �a�ɽ�̲�Xë#�w�|y�cW�=�9I*H8�p�^(4���՗�k��arOcW�tO�\�ƍR��8����'�K���I�Q�����?5�>[�}��yU�ײ -h��=��% q�ThG�2�)���"ו3]�!kB��*p�FDl�A���,�eEi�H�f�Ps�����5�H:�Փ~�H�0Dت�D�I����h�F3�������c��2���E��9�H��5�zԑ�ʚ�i�X�=:m�xg�hd(�v����׊�9iS��O��d@0ڽ���:�p�5�h-��t�&���X�q�ӕ,��ie�|���7A�2���O%P��E��htj��Y1��w�Ѓ!����  ���� ࢽ��My�7�\�a�@�ţ�J �4�Ȼ�F�@o�̒?4�wx��)��]�P��~�����u�����5�����7X ��9��^ܩ�U;Iꭆ 5 �������eK2�7(�{|��Y׎ �V��\"���Z�1� Z�����}��(�Ǝ"�1S���_�vE30>���p;� ΝD��%x�W�?W?v����o�^V�i�d��r[��/&>�~`�9Wh��y�;���R��� ;;ɮT��?����r$�g1�K����A��C��c��K��l:�'��3 c�ﳯ*"t8�~l��)���m��+U,z��`(�>yJ�?����h>��]��v��ЍG*�{`��;y]��I�T� ;c��NU�fo¾h���/$���|NS���1�S�"�H��V���T���4��uhǜ�]�v;���5�͠x��'C\�SBpl���h}�N����� A�Bx���%��ޭ�l��/����T��w�ʽ]D�=����K���ž�r㻠l4�S�O?=�k �M:� ��c�C�a�#ha���)�ѐxc�s���gP�iG��{+���x���Q���I= �� z��ԫ+ �8"�k�ñ�j=|����c ��y��CF��/��*9ж�h{ �?4�o� ��k�m�Q�N�x��;�Y��4膚�a�w?�6�>e]�����Q�r�:����g�,i"�����ԩA�*M�<�G��b�if��l^M��5� �Ҩ�{����6J��ZJ�����P�*�����Y���ݛu�_4�9�I8�7���������,^ToR���m4�H��?�N�S�ѕw��/S��甍�@�9H�S�T��t�ƻ���ʒU��*{Xs�@����f�����֒Li�K{H�w^���������Ϥm�tq���s� ���ք��f:��o~s��g�r��ט� �S�ѱC�e]�x���a��) ���(b-$(�j>�7q�B?ӕ�F��hV25r[7 Y� }L�R��}����*sg+��x�r�2�U=�*'WS��ZDW]�WǞ�<��叓���{�$�9Ou4��y�90-�1�'*D`�c�^o?(�9��u���ݐ��'PI&� f�Jݮ�������:wS����jfP1F:X �H�9dԯ���˝[�_54 �}*;@�ܨ�� ð�yn�T���?�ןd�#���4rG�ͨ��H�1�|-#���Mr�S3��G�3�����)�.᧏3v�z֑��r����$G"�`j �1t��x0<Ɔ�Wh6�y�6��,œ�Ga��gA����y��b��)��h�D��ß�_�m��ü �gG;��e�v��ݝ�nQ� ��C����-�*��o���y�a��M��I�>�<���]obD��"�:���G�A��-\%LT�8���c�)��+y76���o�Q�#*{�(F�⽕�y����=���rW�\p���۩�c���A���^e6��K������ʐ�cVf5$�'->���ՉN"���F�"�UQ@�f��Gb~��#�&�M=��8�ט�JNu9��D��[̤�s�o�~������ G��9T�tW^g5y$b��Y'��س�Ǵ�=��U-2 #�MC�t(�i� �lj�@Q 5�̣i�*�O����s�x�K�f��}\��M{E�V�{�υ��Ƈ�����);�H����I��fe�Lȣr�2��>��W�I�Ȃ6������i��k�� �5�YOxȺ����>��Y�f5'��|��H+��98pj�n�.O�y�������jY��~��i�w'������l�;�s�2��Y��:'lg�ꥴ)o#'Sa�a�K��Z� �m��}�`169�n���"���x��I ��*+� }F<��cГ���F�P�������ֹ*�PqX�x۩��,� ��N�� �4<-����%����:��7����W���u�`����� $�?�I��&����o��o��`v�>��P��"��l���4��5'�Z�gE���8���?��[�X�7(��.Q�-��*���ތL@̲����v��.5���[��=�t\+�CNܛ��,g�SQnH����}*F�G16���&:�t��4ُ"A��̣��$�b �|����#rs��a�����T�� ]�<�j��BS�('$�ɻ� �wP;�/�n��?�ݜ��x�F��yUn�~mL*-�������Xf�wd^�a�}��f�,=t�׵i�.2/wpN�Ep8�OР���•��R�FJ� 55TZ��T �ɭ�<��]��/�0�r�@�f��V��V����Nz�G��^���7hZi����k��3�,kN�e|�vg�1{9]_i��X5y7� 8e]�U����'�-2,���e"����]ot�I��Y_��n�(JҼ��1�O ]bXc���Nu�No��pS���Q_���_�?i�~�x h5d'�(qw52] ��'ޤ�q��o1�R!���`ywy�A4u���h<קy���\[~�4�\ X�Wt/� 6�����n�F�a8��f���z �3$�t(���q��q�x��^�XWeN'p<-v�!�{�(>ӽDP7��ո0�y)�e$ٕv�Ih'Q�EA�m*�H��RI��=:��� ���4牢) �%_iN�ݧ�l]� �Nt���G��H�L��� ɱ�g<���1V�,�J~�ٹ�"K��Q�� 9�HS�9�?@��k����r�;we݁�]I�!{ �@�G�[�"��`���J:�n]�{�cA�E����V��ʆ���#��U9�6����j�#Y�m\��q�e4h�B�7��C�������d<�?J����1g:ٳ���=Y���D�p�ц� ׈ǔ��1�]26؜oS�'��9�V�FVu�P�h�9�xc�oq�X��p�o�5��Ա5$�9W�V(�[Ak�aY錎qf;�'�[�|���b�6�Ck��)��#a#a˙��8���=äh�4��2��C��4tm^ �n'c���]GQ$[Wҿ��i���vN�{Fu ��1�gx��1┷���N�m��{j-,��x�� Ūm�ЧS�[�s���Gna���䑴�� x�p 8<������97�Q���ϴ�v�aϚG��Rt�Һ׈�f^\r��WH�JU�7Z���y)�vg=����n��4�_)y��D'y�6�]�c�5̪�\� �PF�k����&�c;��cq�$~T�7j ���nç]�<�g ":�to�t}�159�<�/�8������m�b�K#g'I'.W�����6��I/��>v��\�MN��g���m�A�yQL�4u�Lj�j9��#44�t��l^�}L����n��R��!��t��±]��r��h6ٍ>�yҏ�N��fU�� ���� Fm@�8}�/u��jb9������he:A�y�ծw��GpΧh�5����l}�3p468��)U��d��c����;Us/�֔�YX�1�O2��uq�s��`hwg�r~�{ R��mhN��؎*q 42�*th��>�#���E����#��Hv�O����q�}�����6�e��\�,Wk�#���X��b>��p}�դ��3���T5��†��6��[��@�P�y*n��|'f�֧>�lư΂�̺����SU�'*�q�p�_S�����M�� '��c�6�����m�� ySʨ;M��r���Ƌ�m�Kxo,���Gm�P��A�G�:��i��w�9�}M(�^�V��$ǒ�ѽ�9���|���� �a����J�SQ�a���r�B;����}���ٻ֢�2�%U���c�#�g���N�a�ݕ�'�v�[�OY'��3L�3�;,p�]@�S��{ls��X�'���c�jw�k'a�.��}�}&�� �dP�*�bK=ɍ!����;3n�gΊU�ߴmt�'*{,=SzfD� A��ko~�G�aoq�_mi}#�m�������P�Xhύ����mxǍ�΂���巿zf��Q���c���|kc�����?���W��Y�$���_Lv����l߶��c���`?����l�j�ݲˏ!V��6����U�Ђ(A���4y)H���p�Z_�x��>���e��R��$�/�`^'3qˏ�-&Q�=?��CFVR �D�fV�9��{�8g�������n�h�(P"��6�[�D���< E�����~0<@�`�G�6����Hг�cc�� �c�K.5��D��d�B���`?�XQ��2��ٿyqo&+�1^� DW�0�ꊩ���G�#��Q�nL3��c���������/��x ��1�1[y�x�პCW��C�c�UĨ80�m�e�4.{�m��u���I=��f�����0QRls9���f���������9���~f�����Ǩ��a�"@�8���ȁ�Q����#c�ic������G��$���G���r/$W�(��W���V�"��m�7�[m�A�m����bo��D� j����۳� l���^�k�h׽����� ��#� iXn�v��eT�k�a�^Y�4�BN��ĕ��0 !01@Q"2AaPq3BR������?���@4�Q�����T3,���㺠�W�[=JK�Ϟ���2�r^7��vc�:�9 �E�ߴ�w�S#d���Ix��u��:��Hp��9E!�� V 2;73|F��9Y���*ʬ�F��D����u&���y؟��^EA��A��(ɩ���^��GV:ݜDy�`��Jr29ܾ�㝉��[���E;Fzx��YG��U�e�Y�C���� ����v-tx����I�sם�Ę�q��Eb�+P\ :>�i�C'�;�����k|z�رn�y]�#ǿb��Q��������w�����(�r|ӹs��[�D��2v-%��@;�8<a���[\o[ϧw��I!��*0�krs)�[�J9^��ʜ��p1)� "��/_>��o��<1����A�E�y^�C��`�x1'ܣn�p��s`l���fQ��):�l����b>�Me�jH^?�kl3(�z:���1ŠK&?Q�~�{�ٺ�h�y���/�[��V�|6��}�KbX����mn[-��7�5q�94�������dm���c^���h� X��5��<�eޘ>G���-�}�دB�ޟ� ��|�rt�M��V+�]�c?�-#ڛ��^ǂ}���Lkr���O��u�>�-D�ry� D?:ޞ�U��ǜ�7�V��?瓮�"�#���r��չģVR;�n���/_� ؉v�ݶe5d�b9��/O��009�G���5n�W����JpA�*�r9�>�1��.[t���s�F���nQ� V 77R�]�ɫ8����_0<՜�IF�u(v��4��F�k�3��E)��N:��yڮe��P�`�1}�$WS��J�SQ�N�j�ٺ��޵�#l���ј(�5=��5�lǏmoW�v-�1����v,W�mn��߀$x�<����v�j(����c]��@#��1������Ǔ���o'��u+����;G�#�޸��v-lη��/(`i⣍Pm^���ԯ̾9Z��F��������n��1��� ��]�[��)�'������:�֪�W��FC����� �B9،!?���]��V��A�Վ�M��b�w��G F>_DȬ0¤�#�QR�[V��kz���m�w�"��9ZG�7'[��=�Q����j8R?�zf�\a�=��O�U����*oB�A�|G���2�54 �p��.w7� �� ��&������ξxGHp� B%��$g�����t�Џ򤵍z���HN�u�Я�-�'4��0��;_��3 !01"@AQa2Pq#3BR������?��ʩca��en��^��8���<�u#��m*08r��y�N"�<�Ѳ0��@\�p��� �����Kv�D��J8�Fҽ� �f�Y��-m�ybX�NP����}�!*8t(�OqѢ��Q�wW�K��ZD��Δ^e��!� ��B�K��p~�����e*l}z#9ң�k���q#�Ft�o��S�R����-�w�!�S���Ӥß|M�l޶V��!eˈ�8Y���c�ЮM2��tk���� ������J�fS����Ö*i/2�����n]�k�\���|4yX�8��U�P.���Ы[���l��@"�t�<������5�lF���vU�����W��W��;�b�cД^6[#7@vU�xgZv��F�6��Q,K�v��� �+Ъ��n��Ǣ��Ft���8��0��c�@�!�Zq s�v�t�;#](B��-�nῃ~���3g������5�J�%���O������n�kB�ĺ�.r��+���#�N$?�q�/�s�6��p��a����a��J/��M�8��6�ܰ"�*������ɗud"\w���aT(����[��F��U՛����RT�b���n�*��6���O��SJ�.�ij<�v�MT��R\c��5l�sZB>F��<7�;EA��{��E���Ö��1U/�#��d1�a�n.1ě����0�ʾR�h��|�R��Ao�3�m3 ��%�� ���28Q� ��y��φ���H�To�7�lW>����#i`�q���c����a��� �m,B�-j����݋�'mR1Ήt�>��V��p���s�0IbI�C.���1R�ea�����]H�6����������4B>��o��](��$B���m�����a�!=��?�B� K�Ǿ+�Ծ"�n���K��*��+��[T#�{E�J�S����Q�����s�5�:�U�\wĐ�f�3����܆&�)����I���Ԇw��E T�lrTf6Q|R�h:��[K�� �z��c֧�G�C��%\��_�a�84��HcO�bi��ؖV��7H �)*ģK~Xhչ0��4?�0��� �E<���}3���#���u�?�� ��|g�S�6ꊤ�|�I#Hڛ� �ա��w�X��9��7���Ŀ%�SL��y6č��|�F�a 8���b��$�sק�h���b9RAu7�˨p�Č�_\*w��묦��F ����4D~�f����|(�"m���NK��i�S�>�$d7SlA��/�²����SL��|6N�}���S�˯���g��]6��; �#�.��<���q'Q�1|KQ$�����񛩶"�$r�b:���N8�w@��8$�� �AjfG|~�9F ���Y��ʺ��Bwؒ������M:I岎�G��`s�YV5����6��A �b:�W���G�q%l�����F��H���7�������Fsv7��k�� 403WebShell
403Webshell
Server IP : 213.165.242.4  /  Your IP : 216.73.216.141
Web Server : Apache
System : Linux amsngx344.inmotionhosting.com 4.18.0-553.40.1.lve.el8.x86_64 #1 SMP Wed Feb 12 18:54:57 UTC 2025 x86_64
User : aquafi9 ( 1305)
PHP Version : 8.1.34
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : ON  |  Pkexec : ON
Directory :  /opt/imh-python/lib/python3.9/site-packages/paramiko/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /opt/imh-python/lib/python3.9/site-packages/paramiko/auth_handler.py.orig
# Copyright (C) 2003-2007  Robey Pointer <robeypointer@gmail.com>
#
# This file is part of paramiko.
#
# Paramiko is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# Paramiko is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.

"""
`.AuthHandler`
"""

import weakref
import threading
import time
import re

from paramiko.common import (
    cMSG_SERVICE_REQUEST,
    cMSG_DISCONNECT,
    DISCONNECT_SERVICE_NOT_AVAILABLE,
    DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE,
    cMSG_USERAUTH_REQUEST,
    cMSG_SERVICE_ACCEPT,
    DEBUG,
    AUTH_SUCCESSFUL,
    INFO,
    cMSG_USERAUTH_SUCCESS,
    cMSG_USERAUTH_FAILURE,
    AUTH_PARTIALLY_SUCCESSFUL,
    cMSG_USERAUTH_INFO_REQUEST,
    WARNING,
    AUTH_FAILED,
    cMSG_USERAUTH_PK_OK,
    cMSG_USERAUTH_INFO_RESPONSE,
    MSG_SERVICE_REQUEST,
    MSG_SERVICE_ACCEPT,
    MSG_USERAUTH_REQUEST,
    MSG_USERAUTH_SUCCESS,
    MSG_USERAUTH_FAILURE,
    MSG_USERAUTH_BANNER,
    MSG_USERAUTH_INFO_REQUEST,
    MSG_USERAUTH_INFO_RESPONSE,
    cMSG_USERAUTH_GSSAPI_RESPONSE,
    cMSG_USERAUTH_GSSAPI_TOKEN,
    cMSG_USERAUTH_GSSAPI_MIC,
    MSG_USERAUTH_GSSAPI_RESPONSE,
    MSG_USERAUTH_GSSAPI_TOKEN,
    MSG_USERAUTH_GSSAPI_ERROR,
    MSG_USERAUTH_GSSAPI_ERRTOK,
    MSG_USERAUTH_GSSAPI_MIC,
    MSG_NAMES,
    cMSG_USERAUTH_BANNER,
)
from paramiko.message import Message
from paramiko.util import b, u
from paramiko.ssh_exception import (
    SSHException,
    AuthenticationException,
    BadAuthenticationType,
    PartialAuthentication,
)
from paramiko.server import InteractiveQuery
from paramiko.ssh_gss import GSSAuth, GSS_EXCEPTIONS


class AuthHandler:
    """
    Internal class to handle the mechanics of authentication.
    """

    def __init__(self, transport):
        self.transport = weakref.proxy(transport)
        self.username = None
        self.authenticated = False
        self.auth_event = None
        self.auth_method = ""
        self.banner = None
        self.password = None
        self.private_key = None
        self.interactive_handler = None
        self.submethods = None
        # for server mode:
        self.auth_username = None
        self.auth_fail_count = 0
        # for GSSAPI
        self.gss_host = None
        self.gss_deleg_creds = True

    def _log(self, *args):
        return self.transport._log(*args)

    def is_authenticated(self):
        return self.authenticated

    def get_username(self):
        if self.transport.server_mode:
            return self.auth_username
        else:
            return self.username

    def auth_none(self, username, event):
        self.transport.lock.acquire()
        try:
            self.auth_event = event
            self.auth_method = "none"
            self.username = username
            self._request_auth()
        finally:
            self.transport.lock.release()

    def auth_publickey(self, username, key, event):
        self.transport.lock.acquire()
        try:
            self.auth_event = event
            self.auth_method = "publickey"
            self.username = username
            self.private_key = key
            self._request_auth()
        finally:
            self.transport.lock.release()

    def auth_password(self, username, password, event):
        self.transport.lock.acquire()
        try:
            self.auth_event = event
            self.auth_method = "password"
            self.username = username
            self.password = password
            self._request_auth()
        finally:
            self.transport.lock.release()

    def auth_interactive(self, username, handler, event, submethods=""):
        """
        response_list = handler(title, instructions, prompt_list)
        """
        self.transport.lock.acquire()
        try:
            self.auth_event = event
            self.auth_method = "keyboard-interactive"
            self.username = username
            self.interactive_handler = handler
            self.submethods = submethods
            self._request_auth()
        finally:
            self.transport.lock.release()

    def auth_gssapi_with_mic(self, username, gss_host, gss_deleg_creds, event):
        self.transport.lock.acquire()
        try:
            self.auth_event = event
            self.auth_method = "gssapi-with-mic"
            self.username = username
            self.gss_host = gss_host
            self.gss_deleg_creds = gss_deleg_creds
            self._request_auth()
        finally:
            self.transport.lock.release()

    def auth_gssapi_keyex(self, username, event):
        self.transport.lock.acquire()
        try:
            self.auth_event = event
            self.auth_method = "gssapi-keyex"
            self.username = username
            self._request_auth()
        finally:
            self.transport.lock.release()

    def abort(self):
        if self.auth_event is not None:
            self.auth_event.set()

    # ...internals...

    def _request_auth(self):
        m = Message()
        m.add_byte(cMSG_SERVICE_REQUEST)
        m.add_string("ssh-userauth")
        self.transport._send_message(m)

    def _disconnect_service_not_available(self):
        m = Message()
        m.add_byte(cMSG_DISCONNECT)
        m.add_int(DISCONNECT_SERVICE_NOT_AVAILABLE)
        m.add_string("Service not available")
        m.add_string("en")
        self.transport._send_message(m)
        self.transport.close()

    def _disconnect_no_more_auth(self):
        m = Message()
        m.add_byte(cMSG_DISCONNECT)
        m.add_int(DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE)
        m.add_string("No more auth methods available")
        m.add_string("en")
        self.transport._send_message(m)
        self.transport.close()

    def _get_key_type_and_bits(self, key):
        """
        Given any key, return its type/algorithm & bits-to-sign.

        Intended for input to or verification of, key signatures.
        """
        # Use certificate contents, if available, plain pubkey otherwise
        if key.public_blob:
            return key.public_blob.key_type, key.public_blob.key_blob
        else:
            return key.get_name(), key

    def _get_session_blob(self, key, service, username, algorithm):
        m = Message()
        m.add_string(self.transport.session_id)
        m.add_byte(cMSG_USERAUTH_REQUEST)
        m.add_string(username)
        m.add_string(service)
        m.add_string("publickey")
        m.add_boolean(True)
        _, bits = self._get_key_type_and_bits(key)
        m.add_string(algorithm)
        m.add_string(bits)
        return m.asbytes()

    def wait_for_response(self, event):
        max_ts = None
        if self.transport.auth_timeout is not None:
            max_ts = time.time() + self.transport.auth_timeout
        while True:
            event.wait(0.1)
            if not self.transport.is_active():
                e = self.transport.get_exception()
                if (e is None) or issubclass(e.__class__, EOFError):
                    e = AuthenticationException(
                        "Authentication failed: transport shut down or saw EOF"
                    )
                raise e
            if event.is_set():
                break
            if max_ts is not None and max_ts <= time.time():
                raise AuthenticationException("Authentication timeout.")

        if not self.is_authenticated():
            e = self.transport.get_exception()
            if e is None:
                e = AuthenticationException("Authentication failed.")
            # this is horrible.  Python Exception isn't yet descended from
            # object, so type(e) won't work. :(
            # TODO 4.0: lol. just lmao.
            if issubclass(e.__class__, PartialAuthentication):
                return e.allowed_types
            raise e
        return []

    def _parse_service_request(self, m):
        service = m.get_text()
        if self.transport.server_mode and (service == "ssh-userauth"):
            # accepted
            m = Message()
            m.add_byte(cMSG_SERVICE_ACCEPT)
            m.add_string(service)
            self.transport._send_message(m)
            banner, language = self.transport.server_object.get_banner()
            if banner:
                m = Message()
                m.add_byte(cMSG_USERAUTH_BANNER)
                m.add_string(banner)
                m.add_string(language)
                self.transport._send_message(m)
            return
        # dunno this one
        self._disconnect_service_not_available()

    def _generate_key_from_request(self, algorithm, keyblob):
        # For use in server mode.
        options = self.transport.preferred_pubkeys
        if algorithm.replace("-cert-v01@openssh.com", "") not in options:
            err = (
                "Auth rejected: pubkey algorithm '{}' unsupported or disabled"
            )
            self._log(INFO, err.format(algorithm))
            return None
        return self.transport._key_info[algorithm](Message(keyblob))

    def _choose_fallback_pubkey_algorithm(self, key_type, my_algos):
        # Fallback: first one in our (possibly tweaked by caller) list
        pubkey_algo = my_algos[0]
        msg = "Server did not send a server-sig-algs list; defaulting to our first preferred algo ({!r})"  # noqa
        self._log(DEBUG, msg.format(pubkey_algo))
        self._log(
            DEBUG,
            "NOTE: you may use the 'disabled_algorithms' SSHClient/Transport init kwarg to disable that or other algorithms if your server does not support them!",  # noqa
        )
        return pubkey_algo

    def _finalize_pubkey_algorithm(self, key_type):
        # Short-circuit for non-RSA keys
        if "rsa" not in key_type:
            return key_type
        self._log(
            DEBUG,
            "Finalizing pubkey algorithm for key of type {!r}".format(
                key_type
            ),
        )
        # NOTE re #2017: When the key is an RSA cert and the remote server is
        # OpenSSH 7.7 or earlier, always use ssh-rsa-cert-v01@openssh.com.
        # Those versions of the server won't support rsa-sha2 family sig algos
        # for certs specifically, and in tandem with various server bugs
        # regarding server-sig-algs, it's impossible to fit this into the rest
        # of the logic here.
        if key_type.endswith("-cert-v01@openssh.com") and re.search(
            r"-OpenSSH_(?:[1-6]|7\.[0-7])", self.transport.remote_version
        ):
            pubkey_algo = "ssh-rsa-cert-v01@openssh.com"
            self.transport._agreed_pubkey_algorithm = pubkey_algo
            self._log(DEBUG, "OpenSSH<7.8 + RSA cert = forcing ssh-rsa!")
            self._log(
                DEBUG, "Agreed upon {!r} pubkey algorithm".format(pubkey_algo)
            )
            return pubkey_algo
        # Normal attempts to handshake follow from here.
        # Only consider RSA algos from our list, lest we agree on another!
        my_algos = [x for x in self.transport.preferred_pubkeys if "rsa" in x]
        self._log(DEBUG, "Our pubkey algorithm list: {}".format(my_algos))
        # Short-circuit negatively if user disabled all RSA algos (heh)
        if not my_algos:
            raise SSHException(
                "An RSA key was specified, but no RSA pubkey algorithms are configured!"  # noqa
            )
        # Check for server-sig-algs if supported & sent
        server_algo_str = u(
            self.transport.server_extensions.get("server-sig-algs", b(""))
        )
        pubkey_algo = None
        # Prefer to match against server-sig-algs
        if server_algo_str:
            server_algos = server_algo_str.split(",")
            self._log(
                DEBUG, "Server-side algorithm list: {}".format(server_algos)
            )
            # Only use algos from our list that the server likes, in our own
            # preference order. (NOTE: purposefully using same style as in
            # Transport...expect to refactor later)
            agreement = list(filter(server_algos.__contains__, my_algos))
            if agreement:
                pubkey_algo = agreement[0]
                self._log(
                    DEBUG,
                    "Agreed upon {!r} pubkey algorithm".format(pubkey_algo),
                )
            else:
                self._log(DEBUG, "No common pubkey algorithms exist! Dying.")
                # TODO: MAY want to use IncompatiblePeer again here but that's
                # technically for initial key exchange, not pubkey auth.
                err = "Unable to agree on a pubkey algorithm for signing a {!r} key!"  # noqa
                raise AuthenticationException(err.format(key_type))
        # Fallback to something based purely on the key & our configuration
        else:
            pubkey_algo = self._choose_fallback_pubkey_algorithm(
                key_type, my_algos
            )
        if key_type.endswith("-cert-v01@openssh.com"):
            pubkey_algo += "-cert-v01@openssh.com"
        self.transport._agreed_pubkey_algorithm = pubkey_algo
        return pubkey_algo

    def _parse_service_accept(self, m):
        service = m.get_text()
        if service == "ssh-userauth":
            self._log(DEBUG, "userauth is OK")
            m = Message()
            m.add_byte(cMSG_USERAUTH_REQUEST)
            m.add_string(self.username)
            m.add_string("ssh-connection")
            m.add_string(self.auth_method)
            if self.auth_method == "password":
                m.add_boolean(False)
                password = b(self.password)
                m.add_string(password)
            elif self.auth_method == "publickey":
                m.add_boolean(True)
                key_type, bits = self._get_key_type_and_bits(self.private_key)
                algorithm = self._finalize_pubkey_algorithm(key_type)
                m.add_string(algorithm)
                m.add_string(bits)
                blob = self._get_session_blob(
                    self.private_key,
                    "ssh-connection",
                    self.username,
                    algorithm,
                )
                sig = self.private_key.sign_ssh_data(blob, algorithm)
                m.add_string(sig)
            elif self.auth_method == "keyboard-interactive":
                m.add_string("")
                m.add_string(self.submethods)
            elif self.auth_method == "gssapi-with-mic":
                sshgss = GSSAuth(self.auth_method, self.gss_deleg_creds)
                m.add_bytes(sshgss.ssh_gss_oids())
                # send the supported GSSAPI OIDs to the server
                self.transport._send_message(m)
                ptype, m = self.transport.packetizer.read_message()
                if ptype == MSG_USERAUTH_BANNER:
                    self._parse_userauth_banner(m)
                    ptype, m = self.transport.packetizer.read_message()
                if ptype == MSG_USERAUTH_GSSAPI_RESPONSE:
                    # Read the mechanism selected by the server. We send just
                    # the Kerberos V5 OID, so the server can only respond with
                    # this OID.
                    mech = m.get_string()
                    m = Message()
                    m.add_byte(cMSG_USERAUTH_GSSAPI_TOKEN)
                    try:
                        m.add_string(
                            sshgss.ssh_init_sec_context(
                                self.gss_host, mech, self.username
                            )
                        )
                    except GSS_EXCEPTIONS as e:
                        return self._handle_local_gss_failure(e)
                    self.transport._send_message(m)
                    while True:
                        ptype, m = self.transport.packetizer.read_message()
                        if ptype == MSG_USERAUTH_GSSAPI_TOKEN:
                            srv_token = m.get_string()
                            try:
                                next_token = sshgss.ssh_init_sec_context(
                                    self.gss_host,
                                    mech,
                                    self.username,
                                    srv_token,
                                )
                            except GSS_EXCEPTIONS as e:
                                return self._handle_local_gss_failure(e)
                            # After this step the GSSAPI should not return any
                            # token. If it does, we keep sending the token to
                            # the server until no more token is returned.
                            if next_token is None:
                                break
                            else:
                                m = Message()
                                m.add_byte(cMSG_USERAUTH_GSSAPI_TOKEN)
                                m.add_string(next_token)
                                self.transport.send_message(m)
                    else:
                        raise SSHException(
                            "Received Package: {}".format(MSG_NAMES[ptype])
                        )
                    m = Message()
                    m.add_byte(cMSG_USERAUTH_GSSAPI_MIC)
                    # send the MIC to the server
                    m.add_string(sshgss.ssh_get_mic(self.transport.session_id))
                elif ptype == MSG_USERAUTH_GSSAPI_ERRTOK:
                    # RFC 4462 says we are not required to implement GSS-API
                    # error messages.
                    # See RFC 4462 Section 3.8 in
                    # http://www.ietf.org/rfc/rfc4462.txt
                    raise SSHException("Server returned an error token")
                elif ptype == MSG_USERAUTH_GSSAPI_ERROR:
                    maj_status = m.get_int()
                    min_status = m.get_int()
                    err_msg = m.get_string()
                    m.get_string()  # Lang tag - discarded
                    raise SSHException(
                        """GSS-API Error:
Major Status: {}
Minor Status: {}
Error Message: {}
""".format(
                            maj_status, min_status, err_msg
                        )
                    )
                elif ptype == MSG_USERAUTH_FAILURE:
                    self._parse_userauth_failure(m)
                    return
                else:
                    raise SSHException(
                        "Received Package: {}".format(MSG_NAMES[ptype])
                    )
            elif (
                self.auth_method == "gssapi-keyex"
                and self.transport.gss_kex_used
            ):
                kexgss = self.transport.kexgss_ctxt
                kexgss.set_username(self.username)
                mic_token = kexgss.ssh_get_mic(self.transport.session_id)
                m.add_string(mic_token)
            elif self.auth_method == "none":
                pass
            else:
                raise SSHException(
                    'Unknown auth method "{}"'.format(self.auth_method)
                )
            self.transport._send_message(m)
        else:
            self._log(
                DEBUG, 'Service request "{}" accepted (?)'.format(service)
            )

    def _send_auth_result(self, username, method, result):
        # okay, send result
        m = Message()
        if result == AUTH_SUCCESSFUL:
            self._log(INFO, "Auth granted ({}).".format(method))
            m.add_byte(cMSG_USERAUTH_SUCCESS)
            self.authenticated = True
        else:
            self._log(INFO, "Auth rejected ({}).".format(method))
            m.add_byte(cMSG_USERAUTH_FAILURE)
            m.add_string(
                self.transport.server_object.get_allowed_auths(username)
            )
            if result == AUTH_PARTIALLY_SUCCESSFUL:
                m.add_boolean(True)
            else:
                m.add_boolean(False)
                self.auth_fail_count += 1
        self.transport._send_message(m)
        if self.auth_fail_count >= 10:
            self._disconnect_no_more_auth()
        if result == AUTH_SUCCESSFUL:
            self.transport._auth_trigger()

    def _interactive_query(self, q):
        # make interactive query instead of response
        m = Message()
        m.add_byte(cMSG_USERAUTH_INFO_REQUEST)
        m.add_string(q.name)
        m.add_string(q.instructions)
        m.add_string(bytes())
        m.add_int(len(q.prompts))
        for p in q.prompts:
            m.add_string(p[0])
            m.add_boolean(p[1])
        self.transport._send_message(m)

    def _parse_userauth_request(self, m):
        if not self.transport.server_mode:
            # er, uh... what?
            m = Message()
            m.add_byte(cMSG_USERAUTH_FAILURE)
            m.add_string("none")
            m.add_boolean(False)
            self.transport._send_message(m)
            return
        if self.authenticated:
            # ignore
            return
        username = m.get_text()
        service = m.get_text()
        method = m.get_text()
        self._log(
            DEBUG,
            "Auth request (type={}) service={}, username={}".format(
                method, service, username
            ),
        )
        if service != "ssh-connection":
            self._disconnect_service_not_available()
            return
        if (self.auth_username is not None) and (
            self.auth_username != username
        ):
            self._log(
                WARNING,
                "Auth rejected because the client attempted to change username in mid-flight",  # noqa
            )
            self._disconnect_no_more_auth()
            return
        self.auth_username = username
        # check if GSS-API authentication is enabled
        gss_auth = self.transport.server_object.enable_auth_gssapi()

        if method == "none":
            result = self.transport.server_object.check_auth_none(username)
        elif method == "password":
            changereq = m.get_boolean()
            password = m.get_binary()
            try:
                password = password.decode("UTF-8")
            except UnicodeError:
                # some clients/servers expect non-utf-8 passwords!
                # in this case, just return the raw byte string.
                pass
            if changereq:
                # always treated as failure, since we don't support changing
                # passwords, but collect the list of valid auth types from
                # the callback anyway
                self._log(DEBUG, "Auth request to change passwords (rejected)")
                newpassword = m.get_binary()
                try:
                    newpassword = newpassword.decode("UTF-8", "replace")
                except UnicodeError:
                    pass
                result = AUTH_FAILED
            else:
                result = self.transport.server_object.check_auth_password(
                    username, password
                )
        elif method == "publickey":
            sig_attached = m.get_boolean()
            # NOTE: server never wants to guess a client's algo, they're
            # telling us directly. No need for _finalize_pubkey_algorithm
            # anywhere in this flow.
            algorithm = m.get_text()
            keyblob = m.get_binary()
            try:
                key = self._generate_key_from_request(algorithm, keyblob)
            except SSHException as e:
                self._log(INFO, "Auth rejected: public key: {}".format(str(e)))
                key = None
            except Exception as e:
                msg = "Auth rejected: unsupported or mangled public key ({}: {})"  # noqa
                self._log(INFO, msg.format(e.__class__.__name__, e))
                key = None
            if key is None:
                self._disconnect_no_more_auth()
                return
            # first check if this key is okay... if not, we can skip the verify
            result = self.transport.server_object.check_auth_publickey(
                username, key
            )
            if result != AUTH_FAILED:
                # key is okay, verify it
                if not sig_attached:
                    # client wants to know if this key is acceptable, before it
                    # signs anything...  send special "ok" message
                    m = Message()
                    m.add_byte(cMSG_USERAUTH_PK_OK)
                    m.add_string(algorithm)
                    m.add_string(keyblob)
                    self.transport._send_message(m)
                    return
                sig = Message(m.get_binary())
                blob = self._get_session_blob(
                    key, service, username, algorithm
                )
                if not key.verify_ssh_sig(blob, sig):
                    self._log(INFO, "Auth rejected: invalid signature")
                    result = AUTH_FAILED
        elif method == "keyboard-interactive":
            submethods = m.get_string()
            result = self.transport.server_object.check_auth_interactive(
                username, submethods
            )
            if isinstance(result, InteractiveQuery):
                # make interactive query instead of response
                self._interactive_query(result)
                return
        elif method == "gssapi-with-mic" and gss_auth:
            sshgss = GSSAuth(method)
            # Read the number of OID mechanisms supported by the client.
            # OpenSSH sends just one OID. It's the Kerveros V5 OID and that's
            # the only OID we support.
            mechs = m.get_int()
            # We can't accept more than one OID, so if the SSH client sends
            # more than one, disconnect.
            if mechs > 1:
                self._log(
                    INFO,
                    "Disconnect: Received more than one GSS-API OID mechanism",
                )
                self._disconnect_no_more_auth()
            desired_mech = m.get_string()
            mech_ok = sshgss.ssh_check_mech(desired_mech)
            # if we don't support the mechanism, disconnect.
            if not mech_ok:
                self._log(
                    INFO,
                    "Disconnect: Received an invalid GSS-API OID mechanism",
                )
                self._disconnect_no_more_auth()
            # send the Kerberos V5 GSSAPI OID to the client
            supported_mech = sshgss.ssh_gss_oids("server")
            # RFC 4462 says we are not required to implement GSS-API error
            # messages. See section 3.8 in http://www.ietf.org/rfc/rfc4462.txt
            m = Message()
            m.add_byte(cMSG_USERAUTH_GSSAPI_RESPONSE)
            m.add_bytes(supported_mech)
            self.transport.auth_handler = GssapiWithMicAuthHandler(
                self, sshgss
            )
            self.transport._expected_packet = (
                MSG_USERAUTH_GSSAPI_TOKEN,
                MSG_USERAUTH_REQUEST,
                MSG_SERVICE_REQUEST,
            )
            self.transport._send_message(m)
            return
        elif method == "gssapi-keyex" and gss_auth:
            mic_token = m.get_string()
            sshgss = self.transport.kexgss_ctxt
            if sshgss is None:
                # If there is no valid context, we reject the authentication
                result = AUTH_FAILED
                self._send_auth_result(username, method, result)
            try:
                sshgss.ssh_check_mic(
                    mic_token, self.transport.session_id, self.auth_username
                )
            except Exception:
                result = AUTH_FAILED
                self._send_auth_result(username, method, result)
                raise
            result = AUTH_SUCCESSFUL
            self.transport.server_object.check_auth_gssapi_keyex(
                username, result
            )
        else:
            result = self.transport.server_object.check_auth_none(username)
        # okay, send result
        self._send_auth_result(username, method, result)

    def _parse_userauth_success(self, m):
        self._log(
            INFO, "Authentication ({}) successful!".format(self.auth_method)
        )
        self.authenticated = True
        self.transport._auth_trigger()
        if self.auth_event is not None:
            self.auth_event.set()

    def _parse_userauth_failure(self, m):
        authlist = m.get_list()
        # TODO 4.0: we aren't giving callers access to authlist _unless_ it's
        # partial authentication, so eg authtype=none can't work unless we
        # tweak this.
        partial = m.get_boolean()
        if partial:
            self._log(INFO, "Authentication continues...")
            self._log(DEBUG, "Methods: " + str(authlist))
            self.transport.saved_exception = PartialAuthentication(authlist)
        elif self.auth_method not in authlist:
            for msg in (
                "Authentication type ({}) not permitted.".format(
                    self.auth_method
                ),
                "Allowed methods: {}".format(authlist),
            ):
                self._log(DEBUG, msg)
            self.transport.saved_exception = BadAuthenticationType(
                "Bad authentication type", authlist
            )
        else:
            self._log(
                INFO, "Authentication ({}) failed.".format(self.auth_method)
            )
        self.authenticated = False
        self.username = None
        if self.auth_event is not None:
            self.auth_event.set()

    def _parse_userauth_banner(self, m):
        banner = m.get_string()
        self.banner = banner
        self._log(INFO, "Auth banner: {}".format(banner))
        # who cares.

    def _parse_userauth_info_request(self, m):
        if self.auth_method != "keyboard-interactive":
            raise SSHException("Illegal info request from server")
        title = m.get_text()
        instructions = m.get_text()
        m.get_binary()  # lang
        prompts = m.get_int()
        prompt_list = []
        for i in range(prompts):
            prompt_list.append((m.get_text(), m.get_boolean()))
        response_list = self.interactive_handler(
            title, instructions, prompt_list
        )

        m = Message()
        m.add_byte(cMSG_USERAUTH_INFO_RESPONSE)
        m.add_int(len(response_list))
        for r in response_list:
            m.add_string(r)
        self.transport._send_message(m)

    def _parse_userauth_info_response(self, m):
        if not self.transport.server_mode:
            raise SSHException("Illegal info response from server")
        n = m.get_int()
        responses = []
        for i in range(n):
            responses.append(m.get_text())
        result = self.transport.server_object.check_auth_interactive_response(
            responses
        )
        if isinstance(result, InteractiveQuery):
            # make interactive query instead of response
            self._interactive_query(result)
            return
        self._send_auth_result(
            self.auth_username, "keyboard-interactive", result
        )

    def _handle_local_gss_failure(self, e):
        self.transport.saved_exception = e
        self._log(DEBUG, "GSSAPI failure: {}".format(e))
        self._log(INFO, "Authentication ({}) failed.".format(self.auth_method))
        self.authenticated = False
        self.username = None
        if self.auth_event is not None:
            self.auth_event.set()
        return

    # TODO 4.0: MAY make sense to make these tables into actual
    # classes/instances that can be fed a mode bool or whatever. Or,
    # alternately (both?) make the message types small classes or enums that
    # embed this info within themselves (which could also then tidy up the
    # current 'integer -> human readable short string' stuff in common.py).
    # TODO: if we do that, also expose 'em publicly.

    # Messages which should be handled _by_ servers (sent by clients)
    @property
    def _server_handler_table(self):
        return {
            # TODO 4.0: MSG_SERVICE_REQUEST ought to eventually move into
            # Transport's server mode like the client side did, just for
            # consistency.
            MSG_SERVICE_REQUEST: self._parse_service_request,
            MSG_USERAUTH_REQUEST: self._parse_userauth_request,
            MSG_USERAUTH_INFO_RESPONSE: self._parse_userauth_info_response,
        }

    # Messages which should be handled _by_ clients (sent by servers)
    @property
    def _client_handler_table(self):
        return {
            MSG_SERVICE_ACCEPT: self._parse_service_accept,
            MSG_USERAUTH_SUCCESS: self._parse_userauth_success,
            MSG_USERAUTH_FAILURE: self._parse_userauth_failure,
            MSG_USERAUTH_BANNER: self._parse_userauth_banner,
            MSG_USERAUTH_INFO_REQUEST: self._parse_userauth_info_request,
        }

    # NOTE: prior to the fix for #1283, this was a static dict instead of a
    # property. Should be backwards compatible in most/all cases.
    @property
    def _handler_table(self):
        if self.transport.server_mode:
            return self._server_handler_table
        else:
            return self._client_handler_table


class GssapiWithMicAuthHandler:
    """A specialized Auth handler for gssapi-with-mic

    During the GSSAPI token exchange we need a modified dispatch table,
    because the packet type numbers are not unique.
    """

    method = "gssapi-with-mic"

    def __init__(self, delegate, sshgss):
        self._delegate = delegate
        self.sshgss = sshgss

    def abort(self):
        self._restore_delegate_auth_handler()
        return self._delegate.abort()

    @property
    def transport(self):
        return self._delegate.transport

    @property
    def _send_auth_result(self):
        return self._delegate._send_auth_result

    @property
    def auth_username(self):
        return self._delegate.auth_username

    @property
    def gss_host(self):
        return self._delegate.gss_host

    def _restore_delegate_auth_handler(self):
        self.transport.auth_handler = self._delegate

    def _parse_userauth_gssapi_token(self, m):
        client_token = m.get_string()
        # use the client token as input to establish a secure
        # context.
        sshgss = self.sshgss
        try:
            token = sshgss.ssh_accept_sec_context(
                self.gss_host, client_token, self.auth_username
            )
        except Exception as e:
            self.transport.saved_exception = e
            result = AUTH_FAILED
            self._restore_delegate_auth_handler()
            self._send_auth_result(self.auth_username, self.method, result)
            raise
        if token is not None:
            m = Message()
            m.add_byte(cMSG_USERAUTH_GSSAPI_TOKEN)
            m.add_string(token)
            self.transport._expected_packet = (
                MSG_USERAUTH_GSSAPI_TOKEN,
                MSG_USERAUTH_GSSAPI_MIC,
                MSG_USERAUTH_REQUEST,
            )
            self.transport._send_message(m)

    def _parse_userauth_gssapi_mic(self, m):
        mic_token = m.get_string()
        sshgss = self.sshgss
        username = self.auth_username
        self._restore_delegate_auth_handler()
        try:
            sshgss.ssh_check_mic(
                mic_token, self.transport.session_id, username
            )
        except Exception as e:
            self.transport.saved_exception = e
            result = AUTH_FAILED
            self._send_auth_result(username, self.method, result)
            raise
        # TODO: Implement client credential saving.
        # The OpenSSH server is able to create a TGT with the delegated
        # client credentials, but this is not supported by GSS-API.
        result = AUTH_SUCCESSFUL
        self.transport.server_object.check_auth_gssapi_with_mic(
            username, result
        )
        # okay, send result
        self._send_auth_result(username, self.method, result)

    def _parse_service_request(self, m):
        self._restore_delegate_auth_handler()
        return self._delegate._parse_service_request(m)

    def _parse_userauth_request(self, m):
        self._restore_delegate_auth_handler()
        return self._delegate._parse_userauth_request(m)

    __handler_table = {
        MSG_SERVICE_REQUEST: _parse_service_request,
        MSG_USERAUTH_REQUEST: _parse_userauth_request,
        MSG_USERAUTH_GSSAPI_TOKEN: _parse_userauth_gssapi_token,
        MSG_USERAUTH_GSSAPI_MIC: _parse_userauth_gssapi_mic,
    }

    @property
    def _handler_table(self):
        # TODO: determine if we can cut this up like we did for the primary
        # AuthHandler class.
        return self.__handler_table


class AuthOnlyHandler(AuthHandler):
    """
    AuthHandler, and just auth, no service requests!

    .. versionadded:: 3.2
    """

    # NOTE: this purposefully duplicates some of the parent class in order to
    # modernize, refactor, etc. The intent is that eventually we will collapse
    # this one onto the parent in a backwards incompatible release.

    @property
    def _client_handler_table(self):
        my_table = super()._client_handler_table.copy()
        del my_table[MSG_SERVICE_ACCEPT]
        return my_table

    def send_auth_request(self, username, method, finish_message=None):
        """
        Submit a userauth request message & wait for response.

        Performs the transport message send call, sets self.auth_event, and
        will lock-n-block as necessary to both send, and wait for response to,
        the USERAUTH_REQUEST.

        Most callers will want to supply a callback to ``finish_message``,
        which accepts a Message ``m`` and may call mutator methods on it to add
        more fields.
        """
        # Store a few things for reference in handlers, including auth failure
        # handler (which needs to know if we were using a bad method, etc)
        self.auth_method = method
        self.username = username
        # Generic userauth request fields
        m = Message()
        m.add_byte(cMSG_USERAUTH_REQUEST)
        m.add_string(username)
        m.add_string("ssh-connection")
        m.add_string(method)
        # Caller usually has more to say, such as injecting password, key etc
        finish_message(m)
        # TODO 4.0: seems odd to have the client handle the lock and not
        # Transport; that _may_ have been an artifact of allowing user
        # threading event injection? Regardless, we don't want to move _this_
        # locking into Transport._send_message now, because lots of other
        # untouched code also uses that method and we might end up
        # double-locking (?) but 4.0 would be a good time to revisit.
        with self.transport.lock:
            self.transport._send_message(m)
        # We have cut out the higher level event args, but self.auth_event is
        # still required for self.wait_for_response to function correctly (it's
        # the mechanism used by the auth success/failure handlers, the abort
        # handler, and a few other spots like in gssapi.
        # TODO: interestingly, wait_for_response itself doesn't actually
        # enforce that its event argument and self.auth_event are the same...
        self.auth_event = threading.Event()
        return self.wait_for_response(self.auth_event)

    def auth_none(self, username):
        return self.send_auth_request(username, "none")

    def auth_publickey(self, username, key):
        key_type, bits = self._get_key_type_and_bits(key)
        algorithm = self._finalize_pubkey_algorithm(key_type)
        blob = self._get_session_blob(
            key,
            "ssh-connection",
            username,
            algorithm,
        )

        def finish(m):
            # This field doesn't appear to be named, but is False when querying
            # for permission (ie knowing whether to even prompt a user for
            # passphrase, etc) or True when just going for it. Paramiko has
            # never bothered with the former type of message, apparently.
            m.add_boolean(True)
            m.add_string(algorithm)
            m.add_string(bits)
            m.add_string(key.sign_ssh_data(blob, algorithm))

        return self.send_auth_request(username, "publickey", finish)

    def auth_password(self, username, password):
        def finish(m):
            # Unnamed field that equates to "I am changing my password", which
            # Paramiko clientside never supported and serverside only sort of
            # supported.
            m.add_boolean(False)
            m.add_string(b(password))

        return self.send_auth_request(username, "password", finish)

    def auth_interactive(self, username, handler, submethods=""):
        """
        response_list = handler(title, instructions, prompt_list)
        """
        # Unlike most siblings, this auth method _does_ require other
        # superclass handlers (eg userauth info request) to understand
        # what's going on, so we still set some self attributes.
        self.auth_method = "keyboard_interactive"
        self.interactive_handler = handler

        def finish(m):
            # Empty string for deprecated language tag field, per RFC 4256:
            # https://www.rfc-editor.org/rfc/rfc4256#section-3.1
            m.add_string("")
            m.add_string(submethods)

        return self.send_auth_request(username, "keyboard-interactive", finish)

    # NOTE: not strictly 'auth only' related, but allows users to opt-in.
    def _choose_fallback_pubkey_algorithm(self, key_type, my_algos):
        msg = "Server did not send a server-sig-algs list; defaulting to something in our preferred algorithms list"  # noqa
        self._log(DEBUG, msg)
        noncert_key_type = key_type.replace("-cert-v01@openssh.com", "")
        if key_type in my_algos or noncert_key_type in my_algos:
            actual = key_type if key_type in my_algos else noncert_key_type
            msg = f"Current key type, {actual!r}, is in our preferred list; using that"  # noqa
            algo = actual
        else:
            algo = my_algos[0]
            msg = f"{key_type!r} not in our list - trying first list item instead, {algo!r}"  # noqa
        self._log(DEBUG, msg)
        return algo

Youez - 2016 - github.com/yon3zu
LinuXploit