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a {�hԧ � @ s8 d Z ddlZddlZddlZddlZddlmZmZmZm Z m Z m Z m Z m Z mZmZmZmZmZmZmZmZmZmZmZmZmZmZm Z m Z m Z m Z m Z m!Z!m"Z"m#Z#m$Z$m%Z%m&Z&m'Z'm(Z( ddl)m*Z* ddl+m,Z,m-Z- ddl.m/Z/m0Z0m1Z1m2Z2 ddl3m4Z4 ddl5m6Z6m7Z7 G d d � d �Z8G d d � d �Z9G d d� de8�Z:dS )z `.AuthHandler` � N)#�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)�Message)�b�u)� SSHException�AuthenticationException�BadAuthenticationType�PartialAuthentication)�InteractiveQuery)�GSSAuth�GSS_EXCEPTIONSc @ s. e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dHdd�Z dd� Z dd� Z dd� Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"e#dAdB� �Z$e#dCdD� �Z%e#dEdF� �Z&dGS )I� AuthHandlerzC Internal class to handle the mechanics of authentication. c C s^ t �|�| _d | _d| _d | _d| _d | _d | _d | _ d | _ d | _ d | _ d| _ d | _d| _d S )NF� r T)�weakref�proxy� transport�username� authenticated� auth_event� auth_method�banner�password� private_key�interactive_handler� submethods� auth_username�auth_fail_count�gss_host�gss_deleg_creds)�selfr3 � rB �D/opt/imh-python/lib/python3.9/site-packages/paramiko/auth_handler.py�__init__R s zAuthHandler.__init__c G s | j j|� S �N)r3 �_log)rA �argsrB rB rC rF d s zAuthHandler._logc C s | j S rE )r5 �rA rB rB rC �is_authenticatedg s z AuthHandler.is_authenticatedc C s | j jr| jS | jS d S rE )r3 � server_moder= r4 rH rB rB rC � get_usernamej s zAuthHandler.get_usernamec C sJ | j j�� z*|| _d| _|| _| �� W | j j�� n| j j�� 0 d S �N�none�r3 �lock�acquirer6 r7 r4 � _request_auth�release�rA r4 �eventrB rB rC � auth_nonep s zAuthHandler.auth_nonec C sP | j j�� z0|| _d| _|| _|| _| �� W | j j�� n| j j�� 0 d S )N� publickey) r3 rO rP r6 r7 r4 r: rQ rR )rA r4 �keyrT rB rB rC �auth_publickeyz s zAuthHandler.auth_publickeyc C sP | j j�� z0|| _d| _|| _|| _| �� W | j j�� n| j j�� 0 d S )Nr9 ) r3 rO rP r6 r7 r4 r9 rQ rR )rA r4 r9 rT rB rB rC � auth_password� s zAuthHandler.auth_passwordr0 c C sV | j j�� z6|| _d| _|| _|| _|| _| �� W | j j� � n| j j� � 0 dS )�K response_list = handler(title, instructions, prompt_list) �keyboard-interactiveN) r3 rO rP r6 r7 r4 r; r< rQ rR )rA r4 �handlerrT r< rB rB rC �auth_interactive� s z AuthHandler.auth_interactivec C sV | j j�� z6|| _d| _|| _|| _|| _| �� W | j j� � n| j j� � 0 d S )N�gssapi-with-mic) r3 rO rP r6 r7 r4 r? r@ rQ rR )rA r4 r? r@ rT rB rB rC �auth_gssapi_with_mic� s z AuthHandler.auth_gssapi_with_micc C sJ | j j�� z*|| _d| _|| _| �� W | j j�� n| j j�� 0 d S )N� gssapi-keyexrN rS rB rB rC �auth_gssapi_keyex� s z AuthHandler.auth_gssapi_keyexc C s | j d ur| j �� d S rE )r6 �setrH rB rB rC �abort� s zAuthHandler.abortc C s* t � }|�t� |�d� | j�|� d S �N� ssh-userauth)r% �add_byter � add_stringr3 � _send_message�rA �mrB rB rC rQ � s zAuthHandler._request_authc C sH t � }|�t� |�t� |�d� |�d� | j�|� | j�� d S )NzService not available�en) r% rf r �add_intr rg r3 rh �closeri rB rB rC �!_disconnect_service_not_available� s z-AuthHandler._disconnect_service_not_availablec C sH t � }|�t� |�t� |�d� |�d� | j�|� | j�� d S )Nz No more auth methods availablerk ) r% rf r rl r rg r3 rh rm ri rB rB rC �_disconnect_no_more_auth� s z$AuthHandler._disconnect_no_more_authc C s& |j r|j j|j jfS |�� |fS dS )z� Given any key, return its type/algorithm & bits-to-sign. Intended for input to or verification of, key signatures. N)Z public_blob�key_typeZkey_blob�get_name)rA rW rB rB rC �_get_key_type_and_bits� s z"AuthHandler._get_key_type_and_bitsc C sp t � }|�| jj� |�t� |�|� |�|� |�d� |�d� | �|�\}}|�|� |�|� |�� S )NrV T) r% rg r3 � session_idrf r � add_booleanrr �asbytes)rA rW �servicer4 � algorithmrj �_�bitsrB rB rC �_get_session_blob� s z AuthHandler._get_session_blobc C s� d }| j jd ur t�� | j j }|�d� | j �� s^| j �� }|d u sRt|jt�rZt d�}|�|� � rhq�|d ur |t�� kr t d��q | � � s�| j �� }|d u r�t d�}t|jt �r�|j S |�g S )Ng�������?z5Authentication failed: transport shut down or saw EOFzAuthentication timeout.zAuthentication failed.)r3 � auth_timeout�time�wait� is_active� get_exception� issubclass� __class__�EOFErrorr) �is_setrI r+ � allowed_types)rA rT Zmax_ts�erB rB rC �wait_for_response� s. � z AuthHandler.wait_for_responsec C s� |� � }| jjr�|dkr�t� }|�t� |�|� | j�|� | jj� � \}}|r�t� }|�t � |�|� |�|� | j�|� d S | � � d S rd ) �get_textr3 rJ r% rf r rg rh � server_object� get_bannerr$ rn )rA rj rv r8 �languagerB rB rC �_parse_service_request s z"AuthHandler._parse_service_requestc C sF | j j}|�dd�|vr2d}| �t|�|�� d S | j j| t|��S )N�-cert-v01@openssh.comr0 z<Auth rejected: pubkey algorithm '{}' unsupported or disabled)r3 �preferred_pubkeys�replacerF r �format� _key_infor% )rA rw �keyblob�options�errrB rB rC �_generate_key_from_request s �z&AuthHandler._generate_key_from_requestc C s. |d }d}| � t|�|�� | � td� |S )Nr zYServer did not send a server-sig-algs list; defaulting to our first preferred algo ({!r})z�NOTE: you may use the 'disabled_algorithms' SSHClient/Transport init kwarg to disable that or other algorithms if your server does not support them!)rF r r� )rA rp �my_algos� pubkey_algo�msgrB rB rC �!_choose_fallback_pubkey_algorithm( s �z-AuthHandler._choose_fallback_pubkey_algorithmc C sP d|vr |S | � td�|�� |dkrdt�d| jj�rdd}|| j_| � td� | � td�|�� |S dd� | jjD �}| � td �|�� |s�t d ��t | jj � d t d ���}d }|�r$|�d �}| � td�|�� tt|j|��}|�r|d }| � td�|�� n | � td� d}t|�|���n | �||�}|�d��rD|d7 }|| j_|S )N�rsaz0Finalizing pubkey algorithm for key of type {!r}zssh-rsaz-OpenSSH_(?:[1-6]|7\.[0-7])z)OpenSSH<7.8 + RSA cert = forcing ssh-rsa!z!Agreed upon {!r} pubkey algorithmc S s g | ]}d |v r|�qS )r� rB )�.0�xrB rB rC � <listcomp>O � z:AuthHandler._finalize_pubkey_algorithm.<locals>.<listcomp>z Our pubkey algorithm list: {}zFAn RSA key was specified, but no RSA pubkey algorithms are configured!zserver-sig-algsr0 �,z Server-side algorithm list: {}r z)No common pubkey algorithms exist! 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|�)| jj*�}|�|� n | jdk�r�nt%d�&| j���| j�|� n| �td�&|�� d S )Nre zuserauth is OK�ssh-connectionr9 FrV Tr[ r0 r^ zReceived Package: {}z Server returned an error tokenzCGSS-API Error: Major Status: {} Minor Status: {} Error Message: {} r` rM zUnknown auth method "{}"z!Service request "{}" accepted (?))3r� rF r r% rf r rg r4 r7 rt r& r9 rr r: r� rz � sign_ssh_datar< r- r@ � add_bytes� ssh_gss_oidsr3 rh � packetizer� read_messager �_parse_userauth_bannerr � get_stringr Zssh_init_sec_contextr? r. �_handle_local_gss_failurer � send_messager( r� r# r Z ssh_get_micrs r! r �get_intr �_parse_userauth_failure� gss_kex_used� kexgss_ctxtZ set_username)rA rj rv r9 rp ry rw �blob�sig�sshgss�ptypeZmechr� Z srv_tokenZ next_tokenZ maj_statusZ min_status�err_msgZkexgss� mic_tokenrB rB rC �_parse_service_accept{ s� � �� � � �� ��� � �z!AuthHandler._parse_service_acceptc C s� t � }|tkr2| �td�|�� |�t� d| _n\| �td�|�� |�t� |� | j j � |�� |t krv|�d� n|�d� | jd7 _| j �|� | jdkr�| �� |tkr�| j �� d S )NzAuth granted ({}).TzAuth rejected ({}).F� � )r% r rF r r� rf r r5 r rg r3 r� Zget_allowed_authsr rt r> rh ro � _auth_trigger)rA r4 �method�resultrj rB rB rC �_send_auth_result s& � z AuthHandler._send_auth_resultc C s| t � }|�t� |�|j� |�|j� |�t� � |�t|j �� |j D ] }|�|d � |� |d � qJ| j � |� d S )Nr r� ) r% rf r rg �name� instructions�bytesrl �len�promptsrt r3 rh )rA �qrj �prB rB rC �_interactive_query s z AuthHandler._interactive_queryc C s� | j js<t� }|�t� |�d� |�d� | j �|� d S | jrFd S |� � }|� � }|� � }| � t d� |||�� |dkr�| � � d S | jd ur�| j|kr�| � td� | �� d S || _| j j�� }|dkr�| j j�|�}�n�|dk�rx|�� }|�� }z|�d�}W n t�y Y n0 |�rd| � t d� |�� } z| �dd �} W n t�y\ Y n0 t}n| j j�||�}�n�|d k�r�|�� } |� � } |�� } z| �| | �} W n� t�y� } z&| � t d � t |��� d } W Y d }~nNd }~0 t �y. } z,d }| � t |� |j j |�� d } W Y d }~n d }~0 0 | d u �rF| �� d S | j j�!|| �}|tk�rt| �s�t� }|�t"� |�| � |�| � | j �|� d S t|�� �}| �#| ||| �}| �$||��st| � t d � t}�n�|dk�r|�%� }| j j�&||�}t'|t(��rt| �)|� d S �n\|dk�r�|�r�t*|�}|�+� }|dk�rV| � t d� | �� |�%� }|�,|�}|�s�| � t d� | �� |�-d�}t� }|�t.� |�/|� t0| |�| j _1t2t3t4f| j _5| j �|� d S |dk�rf|�rf|�%� }| j j6}|d u �rt}| �7|||� z|�8|| j j9| j� W n( t �yN t}| �7|||� � Y n0 t:}| j j�;||� n| j j�|�}| �7|||� d S )NrM Fz.Auth request (type={}) service={}, username={}r� zKAuth rejected because the client attempted to change username in mid-flightr9 zUTF-8z+Auth request to change passwords (rejected)r� rV z Auth rejected: public key: {}z9Auth rejected: unsupported or mangled public key ({}: {})z Auth rejected: invalid signaturer[ r^ r� z8Disconnect: Received more than one GSS-API OID mechanismz5Disconnect: Received an invalid GSS-API OID mechanism�serverr` )<r3 rJ r% rf r rg rt rh r5 r� rF r r� rn r= r ro r� Zenable_auth_gssapiZcheck_auth_none� get_boolean� get_binary�decode� UnicodeErrorr Zcheck_auth_passwordr� r( r �str� Exceptionr� �__name__Zcheck_auth_publickeyr rz �verify_ssh_sigr� Zcheck_auth_interactive� isinstancer, r� r- r� 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z#AuthHandler._parse_userauth_failurec C s$ |� � }|| _| �td�|�� d S )NzAuth banner: {})r� r8 rF r r� )rA rj r8 rB rB rC r� � s z"AuthHandler._parse_userauth_bannerc C s� | j dkrtd��|�� }|�� }|�� |�� }g }t|�D ]}|�|�� |�� f� q>| �|||�}t � }|� t � |� t |�� |D ]}|�|� q�| j�|� d S )Nr[ z Illegal info request from server)r7 r( r� r� r� �range�appendr� r; r% rf r rl r� rg r3 rh ) rA rj �titler� r� � prompt_list�iZ response_list�rrB rB rC � _parse_userauth_info_request s$ � z(AuthHandler._parse_userauth_info_requestc C sr | j jstd��|�� }g }t|�D ]}|�|�� � q$| j j�|�}t |t �r^| � |� d S | � | j d|� d S )Nz!Illegal info response from serverr[ )r3 rJ r( r� r� r� r� r� Z check_auth_interactive_responser� r, r� r� r= )rA rj �nZ responsesr� r� rB rB rC � _parse_userauth_info_response s � �z)AuthHandler._parse_userauth_info_responsec C sR || j _| �td�|�� | �td�| j�� d| _d | _| j d urN| j � � d S )NzGSSAPI failure: {}r� F) r3 r� rF r r� r r7 r5 r4 r6 rb )rA r� rB rB rC r� * s z%AuthHandler._handle_local_gss_failurec C s t | jt| jt| jiS rE )r r� r r� r r� rH rB rB rC �_server_handler_table< s �z!AuthHandler._server_handler_tablec C s" t | jt| jt| jt| jt| j iS rE ) r r� r r� r r� r r� r r� rH rB rB rC �_client_handler_tableH s �z!AuthHandler._client_handler_tablec C s | j jr| jS | jS d S rE )r3 rJ r� r� rH rB rB rC �_handler_tableT s zAuthHandler._handler_tableN)r0 )'r� � __module__� __qualname__�__doc__rD rF rI rK rU rX rY r] r_ ra rc rQ rn ro rr rz r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� �propertyr� r� r� rB rB rB rC r/ M sP H 2 r/ c @ s� e Zd ZdZdZdd� Zdd� Zedd� �Zed d � �Z ed d � �Z ed d� �Z dd� Z dd� Z dd� Zdd� Zdd� Zeeeeee eeiZedd� �ZdS ) r� z�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. r^ c C s || _ || _d S rE )� _delegater� )rA �delegater� rB rB rC rD e s z!GssapiWithMicAuthHandler.__init__c C s | � � | j�� S rE )� _restore_delegate_auth_handlerr� rc rH rB rB rC rc i s z GssapiWithMicAuthHandler.abortc C s | j jS rE )r� r3 rH rB rB rC r3 m s z"GssapiWithMicAuthHandler.transportc C s | j jS rE )r� r� rH rB rB rC r� q s z*GssapiWithMicAuthHandler._send_auth_resultc C s | j jS rE )r� r= rH rB rB rC r= u s z&GssapiWithMicAuthHandler.auth_usernamec C s | j jS rE )r� r? rH rB rB rC r? y s z!GssapiWithMicAuthHandler.gss_hostc C s | j | j_d S rE )r� r3 r� rH rB rB rC r� } s z7GssapiWithMicAuthHandler._restore_delegate_auth_handlerc C s� |� � }| j}z|�| j|| j�}W nL typ } z4|| j_t}| � � | � | j| j |� � W Y d }~n d }~0 0 |d ur�t � }|� t� |�|� tttf| j_| j�|� d S rE )r� r� Zssh_accept_sec_contextr? r= r� r3 r� r r� r� r� r% rf r rg r r" r r� rh )rA rj Z client_tokenr� �tokenr� r� rB rB rC � _parse_userauth_gssapi_token� s* � �z5GssapiWithMicAuthHandler._parse_userauth_gssapi_tokenc C s� |� � }| j}| j}| �� z|�|| jj|� W nB tyt } z*|| j_t }| � || j |� � W Y d }~n d }~0 0 t }| jj �||� | � || j |� d S rE )r� r� r= r� r� r3 rs r� r� r r� r� r r� Zcheck_auth_gssapi_with_mic)rA rj r� r� r4 r� r� rB rB rC �_parse_userauth_gssapi_mic� s$ ��z3GssapiWithMicAuthHandler._parse_userauth_gssapi_micc C s | � � | j�|�S rE )r� r� r� ri rB rB rC r� � s z/GssapiWithMicAuthHandler._parse_service_requestc C s | � � | j�|�S rE )r� r� r� ri rB rB rC r� � s z0GssapiWithMicAuthHandler._parse_userauth_requestc C s | j S rE )�(_GssapiWithMicAuthHandler__handler_tablerH rB rB rC r� � s z'GssapiWithMicAuthHandler._handler_tableN)r� r� r� r� r� rD rc r� r3 r� r= r? r� r� r� r� r� r r r r" r� r� rB rB rB rC r� \ s0 �r� c sX e Zd ZdZe� fdd��Zddd�Zdd� Zd d � Zd d � Z ddd�Z dd� Z � Z S )�AuthOnlyHandlerzU AuthHandler, and just auth, no service requests! .. versionadded:: 3.2 c s t � j�� }|t= |S rE )�superr� �copyr )rA Zmy_table�r� rB rC r� � s z%AuthOnlyHandler._client_handler_tableNc C s� || _ || _t� }|�t� |�|� |�d� |�|� ||� | jj� | j�|� W d � n1 sl0 Y t � � | _ | � | j �S )a� 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. r� N) r7 r4 r% rf r rg r3 rO rh � threading�Eventr6 r� )rA r4 r� Zfinish_messagerj rB rB rC �send_auth_request� s * z!AuthOnlyHandler.send_auth_requestc C s | � |d�S rL �r� )rA r4 rB rB rC rU s zAuthOnlyHandler.auth_nonec sH | � ��\}�| �|�� | ��d|� ��� ���fdd�}| �|d|�S )Nr� c s4 | � d� | �� � | ��� | ����� �� d S )NT)rt rg r� �rj �rw ry r� rW rB rC �finish s z.AuthOnlyHandler.auth_publickey.<locals>.finishrV )rr r� rz r� )rA r4 rW rp r rB r rC rX s � z AuthOnlyHandler.auth_publickeyc s � fdd�}| � |d|�S )Nc s | � d� | �t� �� d S )NF)rt rg r& r �r9 rB rC r s z-AuthOnlyHandler.auth_password.<locals>.finishr9 r )rA r4 r9 r rB r rC rY s z AuthOnlyHandler.auth_passwordr0 c s& d| _ || _� fdd�}| �|d|�S )rZ Zkeyboard_interactivec s | � d� | � � � d S )Nr0 )rg r �r< rB rC r / s z0AuthOnlyHandler.auth_interactive.<locals>.finishr[ )r7 r; r� )rA r4 r\ r< r rB r rC r] % s z AuthOnlyHandler.auth_interactivec C st d}| � t|� |�dd�}||v s,||v rN||v r8|n|}d|�d�}|}n|d }|�d|��}| � t|� |S )NzdServer did not send a server-sig-algs list; defaulting to something in our preferred algorithms listr� r0 zCurrent key type, z&, is in our preferred list; using thatr z3 not in our list - trying first list item instead, )rF r r� )rA rp r� r� Znoncert_key_type�actual�algorB rB rC r� 8 s z1AuthOnlyHandler._choose_fallback_pubkey_algorithm)N)r0 ) r� r� r� r� r� r� r� rU rX rY r] r� � __classcell__rB rB r� rC r� � s ) r� );r� r1 r� r| r� �paramiko.commonr r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r! r" r# r$ �paramiko.messager% � paramiko.utilr& r' �paramiko.ssh_exceptionr( r) r* r+ �paramiko.serverr, �paramiko.ssh_gssr- r. r/ r� r� rB rB rB rC �<module> s& �% l
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