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d� Zddd�Zdd� Zdd� ZG dd� d�ZG dd� de�ZG dd� de�Z dS )z8Basic message object for the email package object model.�Message� EmailMessage� N)�BytesIO�StringIO)�utils)�errors)�Policy�compat32��charset)�decode_bz; z[ \(\)<>@,;:\\"/\[\]\?=]c C s4 t | ��d�\}}}|s$|�� d fS |�� |�� fS )N�;)�str� partition�strip)�param�a�sep�b� r �%/usr/lib64/python3.8/email/message.py� _splitparam s r Tc C s� |dk r�t |�dkr�t|t�rL| d7 } t�|d |d |d �}d| |f S z|�d� W n6 tk
r� | d7 } t�|dd �}d| |f Y S X |s�t�|�r�d
| t� |�f S d| |f S n| S dS ) a~ Convenience function to format and return a key=value pair.
This will quote the value if needed or if quote is true. If value is a
three tuple (charset, language, value), it will be encoded according
to RFC2231 rules. If it contains non-ascii characters it will likewise
be encoded according to RFC2231 rules, using the utf-8 charset and
a null language.
Nr �*� � �%s=%s�asciizutf-8� z%s="%s")
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isinstance�tupler Zencode_rfc2231�encode�UnicodeEncodeError� tspecials�search�quote)r �valuer% r r r � _formatparam' s
r' c C s� dt | � } g }| d d� dkr�| dd � } | �d�}|dkrp| �dd|�| �dd|� d rp| �d|d �}q6|dk r�t| �}| d |� }d|kr�|�d�}|d |� �� �� d ||d d � �� }|�|�� � | |d � } q|S )Nr
r r �"z\"r �=)r �find�countr �indexr �lower�append)�sZplist�end�f�ir r r � _parseparamI s
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,r3 c C s4 t | t�r&| d | d t�| d �fS t�| �S d S )Nr r r )r r r �unquote)r& r r r �
_unquotevalue] s
r5 c @ s� e Zd ZdZefdd�Zdd� Zddd d
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dfdd�Zdgdd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zdhd1d2�Zd3d4� Z d5d6� Z did7d8�Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&djdKdL�Z'dkdMdN�Z(dldQdR�Z)dmdSdT�Z*dndUdV�Z+dodWdX�Z,dpdYdZ�Z-d[d\� Z.dqd]d^�Z/drd_d`�Z0dadb� Z1ddcl2m3Z3 dS )sr a� Basic message object.
A message object is defined as something that has a bunch of RFC 2822
headers and a payload. It may optionally have an envelope header
(a.k.a. Unix-From or From_ header). If the message is a container (i.e. a
multipart or a message/rfc822), then the payload is a list of Message
objects, otherwise it is a string.
Message objects implement part of the `mapping' interface, which assumes
there is exactly one occurrence of the header per message. Some headers
do in fact appear multiple times (e.g. Received) and for those headers,
you must use the explicit API to set or get all the headers. Not all of
the mapping methods are implemented.
c C s: || _ g | _d | _d | _d | _d | _| _g | _d| _d S )N�
text/plain) �policy�_headers� _unixfrom�_payload�_charsetZpreambleZepilogue�defects�
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)� as_string�r> r r r �__str__� s zMessage.__str__Fr Nc C sJ ddl m} |dkr| jn|}t� }||d||d�}|j| |d� |�� S )a� Return the entire formatted message as a string.
Optional 'unixfrom', when true, means include the Unix From_ envelope
header. For backward compatibility reasons, if maxheaderlen is
not specified it defaults to 0, so you must override it explicitly
if you want a different maxheaderlen. 'policy' is passed to the
Generator instance used to serialize the message; if it is not
specified the policy associated with the message instance is used.
If the message object contains binary data that is not encoded
according to RFC standards, the non-compliant data will be replaced by
unicode "unknown character" code points.
r )� GeneratorNF)� mangle_from_� maxheaderlenr7 ��unixfrom)�email.generatorrC r7 r �flatten�getvalue)r> rG rE r7 rC �fp�gr r r r@ � s �zMessage.as_stringc C s | � � S )z?Return the entire formatted message as a bytes object.
)�as_bytesrA r r r � __bytes__� s zMessage.__bytes__c C sH ddl m} |dkr| jn|}t� }||d|d�}|j| |d� |�� S )aJ Return the entire formatted message as a bytes object.
Optional 'unixfrom', when true, means include the Unix From_ envelope
header. 'policy' is passed to the BytesGenerator instance used to
serialize the message; if not specified the policy associated with
the message instance is used.
r )�BytesGeneratorNF)rD r7 rF )rH rO r7 r rI rJ )r> rG r7 rO rK rL r r r rM � s zMessage.as_bytesc C s t | jt�S )z6Return True if the message consists of multiple parts.)r r: �listrA r r r � is_multipart� s zMessage.is_multipartc C s
|| _ d S �N�r9 )r> rG r r r � set_unixfrom� s zMessage.set_unixfromc C s | j S rR rS rA r r r � get_unixfrom� s zMessage.get_unixfromc C sF | j dkr|g| _ n.z| j �|� W n tk
r@ td��Y nX dS )z�Add the given payload to the current payload.
The current payload will always be a list of objects after this method
is called. If you want to set the payload to a scalar object, use
set_payload() instead.
Nz=Attach is not valid on a message with a non-multipart payload)r: r. �AttributeError� TypeError)r> �payloadr r r �attach� s
zMessage.attachc C s� | � � r(|rdS |dkr | jS | j| S |dk rNt| jt�sNtdt| j� ��| j}t| �dd���� }t|t�r�t �
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�r� | Y S X t|t��r�|S |S )aZ Return a reference to the payload.
The payload will either be a list object or a string. If you mutate
the list object, you modify the message's payload in place. Optional
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Optional decode is a flag indicating whether the payload should be
decoded or not, according to the Content-Transfer-Encoding header
(default is False).
When True and the message is not a multipart, the payload will be
decoded if this header's value is `quoted-printable' or `base64'. If
some other encoding is used, or the header is missing, or if the
payload has bogus data (i.e. bogus base64 or uuencoded data), the
payload is returned as-is.
If the message is a multipart and the decode flag is True, then None
is returned.
NzExpected list, got %szcontent-transfer-encodingr r �surrogateescaper �replace�raw-unicode-escapezquoted-printable�base64� )z
x-uuencodeZuuencodeZuuezx-uueT)�quiet)rQ r: r rP rW �typer �getr- r Z_has_surrogatesr! �decode� get_param� LookupError� UnicodeError�quopriZ decodestringr �join�
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zMessage.get_payloadc C sp t |d�r:|dkr || _dS t|t�s.t|�}|�|j�}t |d�rT|�dd�| _n|| _|dk rl| �|� dS )z�Set the payload to the given value.
Optional charset sets the message's default character set. See
set_charset() for details.
r! Nrb r rZ )�hasattrr: r �Charsetr! �output_charsetrb � set_charset)r> rX r r r r � set_payload/ s
zMessage.set_payloadc C s |dkr | � d� d| _dS t|t�s.t|�}|| _d| krH| �dd� d| krf| jdd|�� d� n| �d|�� � ||�� kr�|�| j�| _d| k�r|� � }z || � W nj t
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�}Y nX |�|�| _| �d|� Y nX dS ) a� Set the charset of the payload to a given character set.
charset can be a Charset instance, a string naming a character set, or
None. If it is a string it will be converted to a Charset instance.
If charset is None, the charset parameter will be removed from the
Content-Type field. Anything else will generate a TypeError.
The message will be assumed to be of type text/* encoded with
charset.input_charset. It will be converted to charset.output_charset
and encoded properly, if needed, when generating the plain text
representation of the message. MIME headers (MIME-Version,
Content-Type, Content-Transfer-Encoding) will be added as needed.
Nr � MIME-Version�1.0� Content-Typer6 r
zContent-Transfer-Encodingr rZ )� del_paramr; r rn �
add_headerZget_output_charset� set_paramZ body_encoder: Zget_body_encodingrW r! re ro )r> r rk rX r r r rp C s:
�
zMessage.set_charsetc C s | j S )zKReturn the Charset instance associated with the message's payload.
)r; rA r r r � get_charsetr s zMessage.get_charsetc C s
t | j�S )z9Return the total number of headers, including duplicates.)r r8 rA r r r �__len__z s zMessage.__len__c C s
| � |�S )a- Get a header value.
Return None if the header is missing instead of raising an exception.
Note that if the header appeared multiple times, exactly which
occurrence gets returned is undefined. Use get_all() to get all
the values matching a header field name.
)ra �r> �namer r r � __getitem__~ s zMessage.__getitem__c C sr | j �|�}|rX|�� }d}| jD ]4\}}|�� |kr"|d7 }||kr"td�||���q"| j�| j �||�� dS )z�Set the value of a header.
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r r z/There may be at most {} {} headers in a messageN)r7 Zheader_max_countr- r8 �
ValueError�formatr. �header_store_parse)r> r{ �valZ max_countZlname�found�k�vr r r � __setitem__� s �zMessage.__setitem__c C s@ |� � }g }| jD ]"\}}|� � |kr|�||f� q|| _dS )zwDelete all occurrences of a header, if present.
Does not raise an exception if the header is missing.
N)r- r8 r. )r> r{ �
newheadersr� r� r r r � __delitem__� s zMessage.__delitem__c C s |� � dd� | jD �kS )Nc S s g | ]\}}|� � �qS r )r- ��.0r� r� r r r �
<listcomp>� s z(Message.__contains__.<locals>.<listcomp>)r- r8 rz r r r � __contains__� s zMessage.__contains__c c s | j D ]\}}|V qd S rR �r8 )r> Zfieldr& r r r �__iter__� s zMessage.__iter__c C s dd� | j D �S )a. Return a list of all the message's header field names.
These will be sorted in the order they appeared in the original
message, or were added to the message, and may contain duplicates.
Any fields deleted and re-inserted are always appended to the header
list.
c S s g | ] \}}|�qS r r r� r r r r� � s z Message.keys.<locals>.<listcomp>r� rA r r r �keys� s z Message.keysc s � fdd�� j D �S )a) Return a list of all the message's header values.
These will be sorted in the order they appeared in the original
message, or were added to the message, and may contain duplicates.
Any fields deleted and re-inserted are always appended to the header
list.
c s g | ]\}}� j �||��qS r �r7 �header_fetch_parser� rA r r r� � s �z"Message.values.<locals>.<listcomp>r� rA r rA r �values� s
�zMessage.valuesc s � fdd�� j D �S )a' Get all the message's header fields and values.
These will be sorted in the order they appeared in the original
message, or were added to the message, and may contain duplicates.
Any fields deleted and re-inserted are always appended to the header
list.
c s" g | ]\}}|� j �||�f�qS r r� r� rA r r r� � s �z!Message.items.<locals>.<listcomp>r� rA r rA r �items� s
�z
Message.itemsc C s: |� � }| jD ]&\}}|� � |kr| j�||� S q|S )z~Get a header value.
Like __getitem__() but return failobj instead of None when the field
is missing.
)r- r8 r7 r� )r> r{ �failobjr� r� r r r ra � s
z Message.getc C s | j �||f� dS )z�Store name and value in the model without modification.
This is an "internal" API, intended only for use by a parser.
N)r8 r. )r> r{ r& r r r �set_raw� s zMessage.set_rawc C s t | j�� �S )z�Return the (name, value) header pairs without modification.
This is an "internal" API, intended only for use by a generator.
)�iterr8 �copyrA r r r � raw_items� s zMessage.raw_itemsc C sH g }|� � }| jD ](\}}|� � |kr|�| j�||�� q|sD|S |S )aQ Return a list of all the values for the named field.
These will be sorted in the order they appeared in the original
message, and may contain duplicates. Any fields deleted and
re-inserted are always appended to the header list.
If no such fields exist, failobj is returned (defaults to None).
)r- r8 r. r7 r� )r> r{ r� r� r� r� r r r �get_all� s zMessage.get_allc K sp g }|� � D ]<\}}|dkr0|�|�dd�� q |�t|�dd�|�� q |dk r^|�d|� t�|�| |< dS )u� Extended header setting.
name is the header field to add. keyword arguments can be used to set
additional parameters for the header field, with underscores converted
to dashes. Normally the parameter will be added as key="value" unless
value is None, in which case only the key will be added. If a
parameter value contains non-ASCII characters it can be specified as a
three-tuple of (charset, language, value), in which case it will be
encoded according to RFC2231 rules. Otherwise it will be encoded using
the utf-8 charset and a language of ''.
Examples:
msg.add_header('content-disposition', 'attachment', filename='bud.gif')
msg.add_header('content-disposition', 'attachment',
filename=('utf-8', '', Fußballer.ppt'))
msg.add_header('content-disposition', 'attachment',
filename='Fußballer.ppt'))
N�_�-r )r� r. r[ r' �insert� SEMISPACErg )r> �_name�_valueZ_params�partsr� r� r r r rv s zMessage.add_headerc C s\ |� � }ttt| j��| j�D ]0\}\}}|� � |kr | j�||�| j|< qXq t|��dS )z�Replace a header.
Replace the first matching header found in the message, retaining
header order and case. If no matching header was found, a KeyError is
raised.
N)r- �zip�ranger r8 r7 r �KeyError)r> r� r� r2 r� r� r r r �replace_header! s " zMessage.replace_headerc C sH t � }| �d|�}||kr"| �� S t|�d �� }|�d�dkrDdS |S )a0 Return the message's content type.
The returned string is coerced to lower case of the form
`maintype/subtype'. If there was no Content-Type header in the
message, the default type as given by get_default_type() will be
returned. Since according to RFC 2045, messages always have a default
type this will always return a value.
RFC 2045 defines a message's default type to be text/plain unless it
appears inside a multipart/digest container, in which case it would be
message/rfc822.
� content-typer �/r r6 )�objectra �get_default_typer r- r+ )r> �missingr& �ctyper r r �get_content_type4 s
zMessage.get_content_typec C s | � � }|�d�d S )z�Return the message's main content type.
This is the `maintype' part of the string returned by
get_content_type().
r� r �r� �split�r> r� r r r �get_content_maintypeL s z Message.get_content_maintypec C s | � � }|�d�d S )z�Returns the message's sub-content type.
This is the `subtype' part of the string returned by
get_content_type().
r� r r� r� r r r �get_content_subtypeU s zMessage.get_content_subtypec C s | j S )a Return the `default' content type.
Most messages have a default content type of text/plain, except for
messages that are subparts of multipart/digest containers. Such
subparts have a default content type of message/rfc822.
�r= rA r r r r� ^ s zMessage.get_default_typec C s
|| _ dS )z�Set the `default' content type.
ctype should be either "text/plain" or "message/rfc822", although this
is not enforced. The default content type is not stored in the
Content-Type header.
Nr� r� r r r �set_default_typeg s zMessage.set_default_typec C s� t � }| �||�}||kr |S g }t|�D ]X}z$|�dd�\}}|�� }|�� }W n tk
rr |�� }d}Y nX |�||f� q*t�|�}|S )Nr) r r ) r� ra r3 r� r r} r. r Z
decode_params) r> r� �headerr� r& �params�pr{ r� r r r �_get_params_preservep s
z Message._get_params_preserver� Tc C s8 t � }| �||�}||kr |S |r0dd� |D �S |S dS )am Return the message's Content-Type parameters, as a list.
The elements of the returned list are 2-tuples of key/value pairs, as
split on the `=' sign. The left hand side of the `=' is the key,
while the right hand side is the value. If there is no `=' sign in
the parameter the value is the empty string. The value is as
described in the get_param() method.
Optional failobj is the object to return if there is no Content-Type
header. Optional header is the header to search instead of
Content-Type. If unquote is True, the value is unquoted.
c S s g | ]\}}|t |�f�qS r )r5 r� r r r r� � s z&Message.get_params.<locals>.<listcomp>N)r� r� )r> r� r� r4 r� r� r r r �
get_params� s
zMessage.get_paramsc C sN || kr |S | � ||�D ]0\}}|�� |�� kr|r@t|� S | S q|S )a� Return the parameter value if found in the Content-Type header.
Optional failobj is the object to return if there is no Content-Type
header, or the Content-Type header has no such parameter. Optional
header is the header to search instead of Content-Type.
Parameter keys are always compared case insensitively. The return
value can either be a string, or a 3-tuple if the parameter was RFC
2231 encoded. When it's a 3-tuple, the elements of the value are of
the form (CHARSET, LANGUAGE, VALUE). Note that both CHARSET and
LANGUAGE can be None, in which case you should consider VALUE to be
encoded in the us-ascii charset. You can usually ignore LANGUAGE.
The parameter value (either the returned string, or the VALUE item in
the 3-tuple) is always unquoted, unless unquote is set to False.
If your application doesn't care whether the parameter was RFC 2231
encoded, it can turn the return value into a string as follows:
rawparam = msg.get_param('foo')
param = email.utils.collapse_rfc2231_value(rawparam)
)r� r- r5 )r> r r� r� r4 r� r� r r r rc � s
zMessage.get_paramrt r c C s
t |t�s|r|||f}|| kr2|�� dkr2d}n
| �|�}| j||d�st|s\t|||�}q�t�|t|||�g�}nbd}| j||d�D ]N\} }
d} | �� |�� kr�t|||�} n t| |
|�} |s�| }q�t�|| g�}q�|| �|�k�r|r�| � ||� n| |= || |< dS )a� Set a parameter in the Content-Type header.
If the parameter already exists in the header, its value will be
replaced with the new value.
If header is Content-Type and has not yet been defined for this
message, it will be set to "text/plain" and the new parameter and
value will be appended as per RFC 2045.
An alternate header can be specified in the header argument, and all
parameters will be quoted as necessary unless requote is False.
If charset is specified, the parameter will be encoded according to RFC
2231. Optional language specifies the RFC 2231 language, defaulting
to the empty string. Both charset and language should be strings.
r� r6 )r� r �r� r4 N)
r r r- ra rc r' r� rg r� r� ) r> r r& r� �requoter Zlanguager[ r� Z old_param� old_valueZ append_paramr r r rw � s6
�� zMessage.set_paramc C s� || kr dS d}| j ||d�D ]@\}}|�� |�� kr |sHt|||�}q t�|t|||�g�}q || �|�kr|| |= || |< dS )a> Remove the given parameter completely from the Content-Type header.
The header will be re-written in place without the parameter or its
value. All values will be quoted as necessary unless requote is
False. Optional header specifies an alternative to the Content-Type
header.
Nr r� )r� r- r' r� rg ra )r> r r� r� Z new_ctyper� r� r r r ru � s
�zMessage.del_paramc C s� |� d�dkst�|�� dkr,| d= d| d< || kr@|| |< dS | j||d�}| |= || |< |dd� D ]\}}| �||||� qhdS ) aK Set the main type and subtype for the Content-Type header.
type must be a string in the form "maintype/subtype", otherwise a
ValueError is raised.
This method replaces the Content-Type header, keeping all the
parameters in place. If requote is False, this leaves the existing
header's quoting as is. Otherwise, the parameters will be quoted (the
default).
An alternative header can be specified in the header argument. When
the Content-Type header is set, we'll always also add a MIME-Version
header.
r� r r� z mime-versionrs rr Nr� )r+ r} r- r� rw )r> r` r� r� r� r� r� r r r �set_type s zMessage.set_typec C sD t � }| �d|d�}||kr*| �d|d�}||kr6|S t�|��� S )a@ Return the filename associated with the payload if present.
The filename is extracted from the Content-Disposition header's
`filename' parameter, and it is unquoted. If that header is missing
the `filename' parameter, this method falls back to looking for the
`name' parameter.
�filename�content-dispositionr{ r� )r� rc r �collapse_rfc2231_valuer )r> r� r� r� r r r � get_filename& s zMessage.get_filenamec C s, t � }| �d|�}||kr |S t�|��� S )z�Return the boundary associated with the payload if present.
The boundary is extracted from the Content-Type header's `boundary'
parameter, and it is unquoted.
�boundary)r� rc r r� �rstrip)r> r� r� r� r r r � get_boundary6 s
zMessage.get_boundaryc C s t � }| �|d�}||kr$t�d��g }d}|D ]:\}}|�� dkr\|�dd| f� d}q0|�||f� q0|s�|�dd| f� g }| jD ]z\} }
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a� Set the boundary parameter in Content-Type to 'boundary'.
This is subtly different than deleting the Content-Type header and
adding a new one with a new boundary parameter via add_header(). The
main difference is that using the set_boundary() method preserves the
order of the Content-Type header in the original message.
HeaderParseError is raised if the message has no Content-Type header.
r� z No Content-Type header foundFr� z"%s"Tr r N) r� r� r ZHeaderParseErrorr- r. r8 r� rg r7 r )r> r� r� r� Z newparamsZfoundpZpkZpvr� �hr� r� r� r� r r r � set_boundaryC s2
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r� | Y S X |�� S )z�Return the charset parameter of the Content-Type header.
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'failobj' parameter (defaults to None), if the part does not have a
main MIME type of "text", or the charset is not defined.
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one for the container message (i.e. self), so that a non-multipart
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base Message class, but defaults to None, meaning that the policy value
for max_line_length controls the header maximum length. 'policy' is
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have a match. If 'related' is not included in preferencelist, consider
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multipart/related, or multipart/alternative in the multipart (unless
they have a 'Content-Disposition: attachment' header) and include all
remaining subparts in the returned iterator. When applied to a
multipart/related, return all parts except the root part. Return an
empty iterator when applied to a multipart/alternative or a
non-multipart.
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