two version of R2R are hereHEADmaster

1 files changed, 180 insertions, 0 deletions

diff --git a/.venv/lib/python3.12/site-packages/email_validator/validate_email.py b/.venv/lib/python3.12/site-packages/email_validator/validate_email.py
new file mode 100644
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+++ b/.venv/lib/python3.12/site-packages/email_validator/validate_email.py
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+from typing import Optional, Union, TYPE_CHECKING
+import unicodedata
+
+from .exceptions_types import EmailSyntaxError, ValidatedEmail
+from .syntax import split_email, validate_email_local_part, validate_email_domain_name, validate_email_domain_literal, validate_email_length
+from .rfc_constants import CASE_INSENSITIVE_MAILBOX_NAMES
+
+if TYPE_CHECKING:
+    import dns.resolver
+    _Resolver = dns.resolver.Resolver
+else:
+    _Resolver = object
+
+
+def validate_email(
+    email: Union[str, bytes],
+    /,  # prior arguments are positional-only
+    *,  # subsequent arguments are keyword-only
+    allow_smtputf8: Optional[bool] = None,
+    allow_empty_local: bool = False,
+    allow_quoted_local: Optional[bool] = None,
+    allow_domain_literal: Optional[bool] = None,
+    allow_display_name: Optional[bool] = None,
+    check_deliverability: Optional[bool] = None,
+    test_environment: Optional[bool] = None,
+    globally_deliverable: Optional[bool] = None,
+    timeout: Optional[int] = None,
+    dns_resolver: Optional[_Resolver] = None
+) -> ValidatedEmail:
+    """
+    Given an email address, and some options, returns a ValidatedEmail instance
+    with information about the address if it is valid or, if the address is not
+    valid, raises an EmailNotValidError. This is the main function of the module.
+    """
+
+    # Fill in default values of arguments.
+    from . import ALLOW_SMTPUTF8, ALLOW_QUOTED_LOCAL, ALLOW_DOMAIN_LITERAL, ALLOW_DISPLAY_NAME, \
+        GLOBALLY_DELIVERABLE, CHECK_DELIVERABILITY, TEST_ENVIRONMENT, DEFAULT_TIMEOUT
+    if allow_smtputf8 is None:
+        allow_smtputf8 = ALLOW_SMTPUTF8
+    if allow_quoted_local is None:
+        allow_quoted_local = ALLOW_QUOTED_LOCAL
+    if allow_domain_literal is None:
+        allow_domain_literal = ALLOW_DOMAIN_LITERAL
+    if allow_display_name is None:
+        allow_display_name = ALLOW_DISPLAY_NAME
+    if check_deliverability is None:
+        check_deliverability = CHECK_DELIVERABILITY
+    if test_environment is None:
+        test_environment = TEST_ENVIRONMENT
+    if globally_deliverable is None:
+        globally_deliverable = GLOBALLY_DELIVERABLE
+    if timeout is None and dns_resolver is None:
+        timeout = DEFAULT_TIMEOUT
+
+    # Allow email to be a str or bytes instance. If bytes,
+    # it must be ASCII because that's how the bytes work
+    # on the wire with SMTP.
+    if not isinstance(email, str):
+        try:
+            email = email.decode("ascii")
+        except ValueError as e:
+            raise EmailSyntaxError("The email address is not valid ASCII.") from e
+
+    # Split the address into the display name (or None), the local part
+    # (before the @-sign), and the domain part (after the @-sign).
+    # Normally, there is only one @-sign. But the awkward "quoted string"
+    # local part form (RFC 5321 4.1.2) allows @-signs in the local
+    # part if the local part is quoted.
+    display_name, local_part, domain_part, is_quoted_local_part \
+        = split_email(email)
+
+    # Collect return values in this instance.
+    ret = ValidatedEmail()
+    ret.original = ((local_part if not is_quoted_local_part
+                    else ('"' + local_part + '"'))
+                    + "@" + domain_part)  # drop the display name, if any, for email length tests at the end
+    ret.display_name = display_name
+
+    # Validate the email address's local part syntax and get a normalized form.
+    # If the original address was quoted and the decoded local part is a valid
+    # unquoted local part, then we'll get back a normalized (unescaped) local
+    # part.
+    local_part_info = validate_email_local_part(local_part,
+                                                allow_smtputf8=allow_smtputf8,
+                                                allow_empty_local=allow_empty_local,
+                                                quoted_local_part=is_quoted_local_part)
+    ret.local_part = local_part_info["local_part"]
+    ret.ascii_local_part = local_part_info["ascii_local_part"]
+    ret.smtputf8 = local_part_info["smtputf8"]
+
+    # RFC 6532 section 3.1 says that Unicode NFC normalization should be applied,
+    # so we'll return the NFC-normalized local part. Since the caller may use that
+    # string in place of the original string, ensure it is also valid.
+    normalized_local_part = unicodedata.normalize("NFC", ret.local_part)
+    if normalized_local_part != ret.local_part:
+        try:
+            validate_email_local_part(normalized_local_part,
+                                      allow_smtputf8=allow_smtputf8,
+                                      allow_empty_local=allow_empty_local,
+                                      quoted_local_part=is_quoted_local_part)
+        except EmailSyntaxError as e:
+            raise EmailSyntaxError("After Unicode normalization: " + str(e)) from e
+        ret.local_part = normalized_local_part
+
+    # If a quoted local part isn't allowed but is present, now raise an exception.
+    # This is done after any exceptions raised by validate_email_local_part so
+    # that mandatory checks have highest precedence.
+    if is_quoted_local_part and not allow_quoted_local:
+        raise EmailSyntaxError("Quoting the part before the @-sign is not allowed here.")
+
+    # Some local parts are required to be case-insensitive, so we should normalize
+    # to lowercase.
+    # RFC 2142
+    if ret.ascii_local_part is not None \
+       and ret.ascii_local_part.lower() in CASE_INSENSITIVE_MAILBOX_NAMES \
+       and ret.local_part is not None:
+        ret.ascii_local_part = ret.ascii_local_part.lower()
+        ret.local_part = ret.local_part.lower()
+
+    # Validate the email address's domain part syntax and get a normalized form.
+    is_domain_literal = False
+    if len(domain_part) == 0:
+        raise EmailSyntaxError("There must be something after the @-sign.")
+
+    elif domain_part.startswith("[") and domain_part.endswith("]"):
+        # Parse the address in the domain literal and get back a normalized domain.
+        domain_literal_info = validate_email_domain_literal(domain_part[1:-1])
+        if not allow_domain_literal:
+            raise EmailSyntaxError("A bracketed IP address after the @-sign is not allowed here.")
+        ret.domain = domain_literal_info["domain"]
+        ret.ascii_domain = domain_literal_info["domain"]  # Domain literals are always ASCII.
+        ret.domain_address = domain_literal_info["domain_address"]
+        is_domain_literal = True  # Prevent deliverability checks.
+
+    else:
+        # Check the syntax of the domain and get back a normalized
+        # internationalized and ASCII form.
+        domain_name_info = validate_email_domain_name(domain_part, test_environment=test_environment, globally_deliverable=globally_deliverable)
+        ret.domain = domain_name_info["domain"]
+        ret.ascii_domain = domain_name_info["ascii_domain"]
+
+    # Construct the complete normalized form.
+    ret.normalized = ret.local_part + "@" + ret.domain
+
+    # If the email address has an ASCII form, add it.
+    if not ret.smtputf8:
+        if not ret.ascii_domain:
+            raise Exception("Missing ASCII domain.")
+        ret.ascii_email = (ret.ascii_local_part or "") + "@" + ret.ascii_domain
+    else:
+        ret.ascii_email = None
+
+    # Check the length of the address.
+    validate_email_length(ret)
+
+    # Check that a display name is permitted. It's the last syntax check
+    # because we always check against optional parsing features last.
+    if display_name is not None and not allow_display_name:
+        raise EmailSyntaxError("A display name and angle brackets around the email address are not permitted here.")
+
+    if check_deliverability and not test_environment:
+        # Validate the email address's deliverability using DNS
+        # and update the returned ValidatedEmail object with metadata.
+
+        if is_domain_literal:
+            # There is nothing to check --- skip deliverability checks.
+            return ret
+
+        # Lazy load `deliverability` as it is slow to import (due to dns.resolver)
+        from .deliverability import validate_email_deliverability
+        deliverability_info = validate_email_deliverability(
+            ret.ascii_domain, ret.domain, timeout, dns_resolver
+        )
+        mx = deliverability_info.get("mx")
+        if mx is not None:
+            ret.mx = mx
+        ret.mx_fallback_type = deliverability_info.get("mx_fallback_type")
+
+    return ret