Ejemplo n.º 1
0
def _parse_chunk(stream):
    size = stream.parse(rfc7230.chunk_size * skip(maybe(rfc7230.chunk_ext)))
    _parse_line_ending(stream)
    if size == 0:
        return b''
    else:
        data = stream.consume_n_bytes(size)
        _parse_line_ending(stream)
        return data
Ejemplo n.º 2
0
def _parse_chunk(stream):
    size = stream.parse(rfc7230.chunk_size * skip(maybe(rfc7230.chunk_ext)))
    _parse_line_ending(stream)
    if size == 0:
        return b''
    else:
        data = stream.consume_n_bytes(size)
        _parse_line_ending(stream)
        return data
Ejemplo n.º 3
0
def link_extension(exclude_builtin):
    if exclude_builtin:
        exclude1 = [name for name in _builtin_params if not name.endswith('*')]
        exclude2 = [name.rstrip('*')
                    for name in _builtin_params if name.endswith('*')]
    else:
        exclude1 = exclude2 = None
    return (
        (
            (CaseInsensitive << parmname__excluding(exclude1)) *
            maybe(skip(OWS * '=' * OWS) * (ptoken | quoted_string))
        ) |
        (
            (CaseInsensitive << ext_name_star__excluding(exclude2)) *
            skip(OWS * '=' * OWS) * ext_value
        )
    ) > named(u'link-extension', RFC(5988), is_pivot=True)
Ejemplo n.º 4
0
def link_extension(exclude_builtin):
    if exclude_builtin:
        exclude1 = [name for name in _builtin_params if not name.endswith('*')]
        exclude2 = [name.rstrip('*')
                    for name in _builtin_params if name.endswith('*')]
    else:       # pragma: no cover
        exclude1 = exclude2 = None
    return (
        (
            (CaseInsensitive << parmname__excluding(exclude1)) *
            maybe(skip(OWS * '=' * OWS) * (ptoken | quoted_string))
        ) |
        (
            (CaseInsensitive << ext_name_star__excluding(exclude2)) *
            skip(OWS * '=' * OWS) * ext_value
        )
    ) > named(u'link-extension', RFC(5988), is_pivot=True)
Ejemplo n.º 5
0
def comma_list1(element):
    return _collect_elements << (many(subst(None) << ',' * OWS) + (
        (lambda x: [x]) << group(element)) + many(
            skip(OWS * ',') * maybe(skip(OWS) * element))) > named(
                u'1#rule', RFC(7230, section=u'7'))
Ejemplo n.º 6
0
def comma_list(element):
    # RFC Errata ID: 5257
    return _collect_elements << (maybe(group(element) * skip(OWS)) % many(
        skip(literal(',') * OWS) * maybe(group(element) * skip(OWS)))) > named(
            u'#rule', RFC(7230, section=u'7'))
Ejemplo n.º 7
0
@can_complain
def _check_realm(complain, k, v):
    (symbol, v) = v
    if k == u'realm' and symbol is not quoted_string:
        complain(1196)
    return (k, v)

auth_param = _check_realm << ((CaseInsensitive << token) *
                              skip(BWS * '=' * BWS) *
                              (mark(token) | mark(quoted_string)))      > pivot

challenge = Parametrized << (
    auth_scheme *
    maybe(skip(string1(SP)) * (token68 |
                               MultiDict << comma_list(auth_param)),
          default=MultiDict()))                                         > auto

WWW_Authenticate = comma_list1(challenge)                               > pivot
Proxy_Authenticate = comma_list1(challenge)                             > pivot

credentials = Parametrized << (
    auth_scheme *
    maybe(skip(string1(SP)) * (token68 |
                               MultiDict << comma_list(auth_param)),
          default=MultiDict()))                                         > auto

Authorization = credentials                                             > pivot
Proxy_Authorization = credentials                                       > pivot

fill_names(globals(), RFC(7235))
Ejemplo n.º 8
0
# -*- coding: utf-8; -*-

from httpolice.parse import (
    fill_names,
    literal,
    maybe,
    pivot,
    skip,
    string1,
    subst,
)
from httpolice.syntax.common import DIGIT
from httpolice.syntax.rfc7230 import RWS, comma_list


notice_id = int << string1(DIGIT)                                       > pivot
resp = subst(True) << literal('resp')                                   > pivot
HTTPolice_Silence = comma_list(notice_id * maybe(skip(RWS) * resp))     > pivot


fill_names(globals(), citation=None)
Ejemplo n.º 9
0
    string,
    subst,
)
from httpolice.structure import EntityTag
from httpolice.syntax.common import DQUOTE
from httpolice.syntax.rfc7230 import comma_list1, obs_text
from httpolice.syntax.rfc7231 import HTTP_date


weak = subst(True) << octet(0x57) * octet(0x2F)                         > auto
etagc = octet(0x21) | octet_range(0x23, 0x7E) | obs_text                > auto

@can_complain
def _no_backslashes(complain, s):
    if u'\\' in s:
        complain(1119)
    return s

opaque_tag = _no_backslashes << DQUOTE + string(etagc) + DQUOTE         > auto
entity_tag = EntityTag << maybe(weak, False) * opaque_tag               > pivot

ETag = entity_tag                                                       > pivot
Last_Modified = HTTP_date                                               > pivot

If_Match = '*' | comma_list1(entity_tag)                                > pivot
If_None_Match = '*' | comma_list1(entity_tag)                           > pivot
If_Modified_Since = HTTP_date                                           > pivot
If_Unmodified_Since = HTTP_date                                         > pivot

fill_names(globals(), RFC(7232))
Ejemplo n.º 10
0
# -*- coding: utf-8; -*-

from httpolice.parse import (fill_names, literal, maybe, pivot, skip, string1,
                             subst)
from httpolice.syntax.common import DIGIT
from httpolice.syntax.rfc7230 import RWS, comma_list

notice_id = int << string1(DIGIT) > pivot
resp = subst(True) << literal('resp') > pivot
HTTPolice_Silence = comma_list(notice_id * maybe(skip(RWS) * resp)) > pivot

fill_names(globals(), citation=None)
Ejemplo n.º 11
0
parmname = string(attr_char) > pivot

# We don't need to special-case "UTF-8", simplify.
mime_charsetc = (ALPHA | DIGIT | '!' | '#' | '$' | '%' | '&' | '+' | '-' | '^'
                 | '_' | '`' | '{' | '}' | '~') > auto
mime_charset = string1(mime_charsetc) > auto
charset = CaseInsensitive << mime_charset > pivot

pct_encoded = '%' + HEXDIG + HEXDIG > auto
value_chars = pct_decode << (
    force_bytes << string(pct_encoded | attr_char)) > auto


@can_complain
def _check_ext_value(complain, val):
    if val.charset == u'UTF-8':
        try:
            val.value_bytes.decode(val.charset)
        except UnicodeError as e:
            complain(1254, charset=val.charset, error=e)
    else:
        complain(1253, charset=val.charset)
    return val


ext_value = _check_ext_value << (
    ExtValue <<
    (charset * skip("'") * maybe(language) * skip("'") * value_chars)) > pivot

fill_names(globals(), RFC(8187))
Ejemplo n.º 12
0
from httpolice.parse import (fill_names, literal, mark, maybe, maybe_str,
                             named, pivot, skip, string1, string_times)
from httpolice.structure import (CacheDirective, CaseInsensitive, Parametrized,
                                 WarnCode, WarningValue)
from httpolice.syntax.common import DIGIT, DQUOTE, SP
from httpolice.syntax.rfc7230 import (comma_list, comma_list1, field_name,
                                      port, pseudonym, quoted_string, token,
                                      token__excluding, uri_host)
from httpolice.syntax.rfc7231 import HTTP_date

delta_seconds = int << string1(DIGIT) > pivot
Age = delta_seconds > pivot

cache_directive = Parametrized << (
    (CacheDirective << token) *
    maybe(skip('=') * (mark(token) | mark(quoted_string)))) > pivot
Cache_Control = comma_list1(cache_directive) > pivot

# RFC 7234 does not, strictly speaking, define these productions:
no_cache = comma_list(field_name) > pivot
private = comma_list(field_name) > pivot

Expires = HTTP_date > pivot


def extension_pragma(exclude_no_cache=False):
    return Parametrized << (
        (token__excluding(['no-cache']) if exclude_no_cache else token) *
        maybe(skip('=') * (token | quoted_string))) > named(
            u'extension-pragma', RFC(7234), is_pivot=True)
Ejemplo n.º 13
0
def comma_list(element):
    # RFC Errata ID: 5257
    return _collect_elements << (
        maybe(group(element) * skip(OWS)) %
        many(skip(literal(',') * OWS) * maybe(group(element) * skip(OWS)))
    ) > named(u'#rule', RFC(7230, section=u'7'))
Ejemplo n.º 14
0
from httpolice.syntax.common import ALPHA, DIGIT
from httpolice.syntax.rfc3986 import IPv4address, IPv6address
from httpolice.syntax.rfc7230 import comma_list1, quoted_string, token


def _remove_empty(xs):
    return [x for x in xs if x is not None]


obfnode = '_' + string1(ALPHA | DIGIT | '.' | '_' | '-')                > pivot
nodename = (IPv4address |
            skip('[') * IPv6address * skip(']') |
            'unknown' | obfnode)                                        > pivot

port = int << string_times(1, 5, DIGIT)                                 > pivot
obfport = '_' + string1(ALPHA | DIGIT | '.' | '_' | '-')                > pivot
node_port = port | obfport                                              > pivot

node = nodename * maybe(skip(':') * node_port)                          > pivot

value = token | quoted_string                                           > pivot
forwarded_pair = (ForwardedParam << token) * skip('=') * value          > pivot

forwarded_element = _remove_empty << (
    maybe(forwarded_pair) % many(skip(';') * maybe(forwarded_pair)))    > pivot

Forwarded = comma_list1(forwarded_element)                              > pivot


fill_names(globals(), RFC(7239))
Ejemplo n.º 15
0
    # RFC 7240 Section 2: "Empty or zero-length values on both
    # the preference token and within parameters are equivalent
    # to no value being specified at all."
    (name, value) = x if isinstance(x, tuple) else (x, None)
    return Parametrized(name, None if value == u'' else value)

def preference_parameter(head=False):
    # The head (first) ``preference-parameter`` of a ``preference``
    # contains the actual preference name, which we want to annotate.
    name_cls = Preference if head else CaseInsensitive
    return (
        _normalize_empty_value << (parameter(name_cls=name_cls) |
                                   name_cls << token)
    ) > named(u'preference-parameter', RFC(7240, errata=4439), is_pivot=True)

preference = Parametrized << (
    preference_parameter(head=True) *
    many(skip(OWS * ';') * maybe(skip(OWS) * preference_parameter()))
) > named(u'preference', RFC(7240, errata=4439), is_pivot=True)

Prefer = comma_list1(preference)                                        > pivot

Preference_Applied = comma_list1(preference_parameter(head=True))       > pivot


return_ = CaseInsensitive << (literal('representation') | 'minimal')    > pivot
wait = delay_seconds                                                    > auto
handling = CaseInsensitive << (literal('strict') | 'lenient')           > pivot

fill_names(globals(), RFC(7240))
Ejemplo n.º 16
0
range_unit = bytes_unit | other_range_unit                              > pivot
acceptable_ranges = (
    subst([]) << literal('none') |
    comma_list1(range_unit))                                            > pivot
Accept_Ranges = acceptable_ranges                                       > pivot

@can_complain
def _well_formed1(complain, first, last):
    if (last is not None) and (first > last):
        complain(1133)
    return (first, last)

first_byte_pos = int << string1(DIGIT)                                  > auto
last_byte_pos = int << string1(DIGIT)                                   > auto
byte_range_spec = _well_formed1 << (first_byte_pos * skip('-') *
                                    maybe(last_byte_pos))               > pivot

suffix_length = int << string1(DIGIT)                                   > auto
suffix_byte_range_spec = \
    (lambda x: (None, x)) << skip('-') * suffix_length                  > pivot

byte_range_set = comma_list1(byte_range_spec | suffix_byte_range_spec)  > auto
byte_ranges_specifier = RangeSpecifier << (
    bytes_unit * skip('=') * byte_range_set)                            > pivot

other_range_set = string1(VCHAR)                                        > auto
other_ranges_specifier = RangeSpecifier << (
    other_range_unit * skip('=') * other_range_set)                     > pivot

Range = byte_ranges_specifier | other_ranges_specifier                  > pivot
Ejemplo n.º 17
0
def comma_list(element):
    return _collect_elements << maybe(
        (subst([None, None]) << literal(',') |
         (lambda x: [x]) << group(element)) +
        many(skip(OWS * ',') * maybe(skip(OWS) * element))) > named(
            u'#rule', RFC(7230, section=(7, )))
Ejemplo n.º 18
0
# -*- coding: utf-8; -*-

from httpolice.citation import RFC
from httpolice.parse import auto, fill_names, many, maybe, pivot, skip, string1
from httpolice.structure import HSTSDirective, Parametrized
from httpolice.syntax.common import DIGIT
from httpolice.syntax.rfc7230 import OWS, quoted_string, token


# This has been slightly adapted to the rules of RFC 7230.
# The ``OWS`` are derived from the "implied ``*LWS``" requirement.

directive_name = HSTSDirective << token                                 > auto
directive_value = token | quoted_string                                 > auto
directive = Parametrized << (
    directive_name * maybe(skip(OWS * '=' * OWS) * directive_value))    > pivot

def _collect_elements(xs):
    return [elem for elem in xs if elem is not None]

Strict_Transport_Security = _collect_elements << (
    maybe(directive) % many(skip(OWS * ';' * OWS) * maybe(directive)))  > pivot

max_age_value = int << string1(DIGIT)                                   > pivot

fill_names(globals(), RFC(6797))
Ejemplo n.º 19
0
def extension_pragma(exclude_no_cache=False):
    return Parametrized << (
        (token__excluding(['no-cache']) if exclude_no_cache else token) *
        maybe(skip('=') * (token | quoted_string))) > named(
            u'extension-pragma', RFC(7234), is_pivot=True)
Ejemplo n.º 20
0
    return ((CaseInsensitive << token__excluding(exclude or [])) * skip('=') *
            (token | quoted_string)) > named(
                u'parameter', RFC(7231), is_pivot=True)


type_ = token > pivot
subtype = token > pivot
media_type = Parametrized << (
    (_check_media_type << (MediaType << type_ + '/' + subtype)) *
    (MultiDict << many(skip(OWS * ';' * OWS) * parameter()))) > pivot

content_coding = ContentCoding << token > pivot

product_version = token > pivot
product = Versioned << (
    (ProductName << token) * maybe(skip('/') * product_version)) > pivot
User_Agent = product % many(
    skip(RWS) * (product | comment(include_parens=False))) > pivot
Server = product % many(skip(RWS) *
                        (product | comment(include_parens=False))) > pivot

day_name = (subst(0) << octet(0x4D) * octet(0x6F) * octet(0x6E)
            | subst(1) << octet(0x54) * octet(0x75) * octet(0x65)
            | subst(2) << octet(0x57) * octet(0x65) * octet(0x64)
            | subst(3) << octet(0x54) * octet(0x68) * octet(0x75)
            | subst(4) << octet(0x46) * octet(0x72) * octet(0x69)
            | subst(5) << octet(0x53) * octet(0x61) * octet(0x74)
            | subst(6) << octet(0x53) * octet(0x75) * octet(0x6E)) > pivot


@can_complain
Ejemplo n.º 21
0
def comma_list(element):
    return _collect_elements << maybe(
        (subst([None, None]) << literal(',') |
         (lambda x: [x]) << group(element)) +
        many(skip(OWS * ',') * maybe(skip(OWS) * element))
    ) > named(u'#rule', RFC(7230, section=(7,)))
Ejemplo n.º 22
0
acceptable_ranges = (CaseInsensitive << literal('none')
                     | comma_list1(range_unit)) > pivot
Accept_Ranges = acceptable_ranges > pivot


@can_complain
def _well_formed1(complain, first, last):
    if (last is not None) and (first > last):
        complain(1133)
    return (first, last)


first_byte_pos = int << string1(DIGIT) > auto
last_byte_pos = int << string1(DIGIT) > auto
byte_range_spec = _well_formed1 << (first_byte_pos * skip('-') *
                                    maybe(last_byte_pos)) > pivot

suffix_length = int << string1(DIGIT) > auto
suffix_byte_range_spec = \
    (lambda x: (None, x)) << skip('-') * suffix_length                  > pivot

byte_range_set = comma_list1(byte_range_spec | suffix_byte_range_spec) > auto
byte_ranges_specifier = RangeSpecifier << (bytes_unit * skip('=') *
                                           byte_range_set) > pivot

other_range_set = string1(VCHAR) > auto
other_ranges_specifier = RangeSpecifier << (other_range_unit * skip('=') *
                                            other_range_set) > pivot

Range = byte_ranges_specifier | other_ranges_specifier > pivot
Ejemplo n.º 23
0
    return (
        (CaseInsensitive << token__excluding(exclude or [])) *
        skip('=') * (token | quoted_string)
    ) > named(u'parameter', RFC(7231), is_pivot=True)

type_ = token                                                           > pivot
subtype = token                                                         > pivot
media_type = Parametrized << (
    (MediaType << type_ + '/' + subtype) *
    (MultiDict << many(skip(OWS * ';' * OWS) * parameter())))           > pivot

content_coding = ContentCoding << token                                 > pivot

product_version = token                                                 > pivot
product = Versioned << ((ProductName << token) *
                        maybe(skip('/') * product_version))             > pivot
User_Agent = product % many(skip(RWS) *
                            (product | comment(include_parens=False)))  > pivot
Server = product % many(skip(RWS) *
                        (product | comment(include_parens=False)))      > pivot

day_name = (subst(0) << octet(0x4D) * octet(0x6F) * octet(0x6E) |
            subst(1) << octet(0x54) * octet(0x75) * octet(0x65) |
            subst(2) << octet(0x57) * octet(0x65) * octet(0x64) |
            subst(3) << octet(0x54) * octet(0x68) * octet(0x75) |
            subst(4) << octet(0x46) * octet(0x72) * octet(0x69) |
            subst(5) << octet(0x53) * octet(0x61) * octet(0x74) |
            subst(6) << octet(0x53) * octet(0x75) * octet(0x6E))        > pivot

@can_complain
def _to_date(complain, d, m, y):
Ejemplo n.º 24
0
from httpolice.parse import (auto, can_complain, fill_names, maybe, octet,
                             octet_range, pivot, string, subst)
from httpolice.structure import EntityTag
from httpolice.syntax.common import DQUOTE
from httpolice.syntax.rfc7230 import comma_list1, obs_text
from httpolice.syntax.rfc7231 import HTTP_date

weak = subst(True) << octet(0x57) * octet(0x2F) > auto
etagc = octet(0x21) | octet_range(0x23, 0x7E) | obs_text > auto


@can_complain
def _no_backslashes(complain, s):
    if u'\\' in s:
        complain(1119)
    return s


opaque_tag = _no_backslashes << DQUOTE + string(etagc) + DQUOTE > auto
entity_tag = EntityTag << maybe(weak, False) * opaque_tag > pivot

ETag = entity_tag > pivot
Last_Modified = HTTP_date > pivot

If_Match = '*' | comma_list1(entity_tag) > pivot
If_None_Match = '*' | comma_list1(entity_tag) > pivot
If_Modified_Since = HTTP_date > pivot
If_Unmodified_Since = HTTP_date > pivot

fill_names(globals(), RFC(7232))
Ejemplo n.º 25
0
    port,
    pseudonym,
    quoted_string,
    token,
    token__excluding,
    uri_host,
)
from httpolice.syntax.rfc7231 import HTTP_date


delta_seconds = int << string1(DIGIT)                                   > pivot
Age = delta_seconds                                                     > pivot

cache_directive = Parametrized << (
    (CacheDirective << token) *
    maybe(skip('=') * (mark(token) | mark(quoted_string))))             > pivot
Cache_Control = comma_list1(cache_directive)                            > pivot

Expires = HTTP_date                                                     > pivot

def extension_pragma(exclude_no_cache=False):
    return Parametrized << (
        (token__excluding(['no-cache']) if exclude_no_cache else token) *
        maybe(skip('=') * (token | quoted_string))
    ) > named(u'extension-pragma', RFC(7234), is_pivot=True)

pragma_directive = (CaseInsensitive << literal('no-cache') |
                    extension_pragma(exclude_no_cache=True))            > pivot
Pragma = comma_list1(pragma_directive)                                  > pivot

warn_code = WarnCode << string_times(3, 3, DIGIT)                       > pivot
Ejemplo n.º 26
0
    exclude = _built_in_codings
    if no_trailers:
        exclude = exclude + ['trailers']
    r = transfer_extension(exclude, no_q)
    for name in _built_in_codings:
        r = r | _empty_params << (TransferCoding << literal(name))
    return r > named(u'transfer-coding', RFC(7230), is_pivot=True)

Transfer_Encoding = comma_list1(transfer_coding())                      > pivot

rank = (float << '0' + maybe_str('.' + string_times(0, 3, DIGIT)) |
        float << '1' + maybe_str('.' + string_times(0, 3, '0')))        > pivot
t_ranking = skip(OWS * ';' * OWS * 'q=') * rank                         > pivot
t_codings = (CaseInsensitive << literal('trailers') |
             Parametrized << (transfer_coding(no_trailers=True, no_q=True) *
                              maybe(t_ranking)))                        > pivot
TE = comma_list(t_codings)                                              > pivot

Trailer = comma_list1(field_name)                                       > pivot

chunk_size = (lambda s: int(s, 16)) << string1(HEXDIG)                  > pivot
chunk_ext_name = token                                                  > auto
chunk_ext_val = token | quoted_string                                   > auto
chunk_ext = many(skip(';') * chunk_ext_name *
                 maybe(skip('=') * chunk_ext_val))                      > pivot

Host = uri_host + maybe_str(':' + port)                                 > pivot

connection_option = ConnectionOption << token                           > pivot
Connection = comma_list1(connection_option)                             > pivot
Ejemplo n.º 27
0
        if symbol is not None:
            value = parse(value,
                          symbol,
                          complain,
                          1158,
                          name=name,
                          value=value)
        r.append((name, value))
        if name == u'rev':
            complain(1226)
    if u'rel' not in seen:
        complain(1309)
    return MultiDict(r)


link_param = ((CaseInsensitive << token) * skip(BWS) * maybe(
    skip(literal('=') * BWS) * (mark(token) | mark(quoted_string)))) > pivot

link_value = Parametrized << (
    skip('<') * URI_Reference * skip('>') *
    (_process_params << many(skip(OWS * ';' * OWS) * link_param))) > pivot

Link = comma_list(link_value) > pivot

anchor = URI_Reference > auto

reg_rel_type = CaseInsensitive << (LOALPHA +
                                   string(LOALPHA | DIGIT | '.' | '-')) > auto
ext_rel_type = URI > auto
relation_type = reg_rel_type | ext_rel_type > pivot
rel = rev = relation_type % many(skip(string1(SP)) * relation_type) > auto
Ejemplo n.º 28
0
def comma_list1(element):
    return _collect_elements << (
        many(subst(None) << ',' * OWS) +
        ((lambda x: [x]) << group(element)) +
        many(skip(OWS * ',') * maybe(skip(OWS) * element))
    ) > named(u'1#rule', RFC(7230, section=(7,)))
Ejemplo n.º 29
0
                             string_times)
from httpolice.structure import ForwardedParam
from httpolice.syntax.common import ALPHA, DIGIT
from httpolice.syntax.rfc3986 import IPv4address, IPv6address
from httpolice.syntax.rfc7230 import comma_list1, quoted_string, token


def _remove_empty(xs):
    return [x for x in xs if x is not None]


obfnode = '_' + string1(ALPHA | DIGIT | '.' | '_' | '-') > pivot
nodename = (IPv4address | skip('[') * IPv6address * skip(']') | 'unknown'
            | obfnode) > pivot

port = int << string_times(1, 5, DIGIT) > pivot
obfport = '_' + string1(ALPHA | DIGIT | '.' | '_' | '-') > pivot
node_port = port | obfport > pivot

node = nodename * maybe(skip(':') * node_port) > pivot

value = token | quoted_string > pivot
forwarded_pair = (ForwardedParam << token) * skip('=') * value > pivot

forwarded_element = _remove_empty << (
    maybe(forwarded_pair) % many(skip(';') * maybe(forwarded_pair))) > pivot

Forwarded = comma_list1(forwarded_element) > pivot

fill_names(globals(), RFC(7239))
Ejemplo n.º 30
0
# We don't need to special-case "UTF-8" and "ISO-8859-1", simplify.
mime_charsetc = (ALPHA | DIGIT |
                 '!' | '#' | '$' | '%' | '&' | '+' | '-' | '^' | '_' | '`' |
                 '{' | '}' | '~')                                       > auto
mime_charset = string1(mime_charsetc)                                   > auto
charset = CaseInsensitive << mime_charset                               > pivot

pct_encoded = '%' + HEXDIG + HEXDIG                                     > auto
value_chars = pct_decode << (
    force_bytes << string(pct_encoded | attr_char))                     > auto

@can_complain
def _check_ext_value(complain, val):
    if val.charset in [u'UTF-8', u'ISO-8859-1']:
        try:
            val.value_bytes.decode(val.charset)
        except UnicodeError as e:
            complain(1254, charset=val.charset, error=e)
    else:
        complain(1253, charset=val.charset)
    return val

ext_value = _check_ext_value << (
    ExtValue << (charset * skip("'") *
                 maybe(language) * skip("'") *
                 value_chars))                                          > pivot


fill_names(globals(), RFC(5987))
Ejemplo n.º 31
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    if no_trailers:
        exclude = exclude + ['trailers']
    r = transfer_extension(exclude, no_q)
    for name in _built_in_codings:
        r = r | _empty_params << (TransferCoding << literal(name))
    return r > named(u'transfer-coding', RFC(7230), is_pivot=True)


Transfer_Encoding = comma_list1(transfer_coding()) > pivot

rank = (float << '0' + maybe_str('.' + string_times(0, 3, DIGIT))
        | float << '1' + maybe_str('.' + string_times(0, 3, '0'))) > pivot
t_ranking = skip(OWS * ';' * OWS * 'q=') * rank > pivot
t_codings = (
    CaseInsensitive << literal('trailers') | Parametrized <<
    (transfer_coding(no_trailers=True, no_q=True) * maybe(t_ranking))) > pivot
TE = comma_list(t_codings) > pivot

Trailer = comma_list1(field_name) > pivot

Host = uri_host + maybe_str(':' + port) > pivot

connection_option = ConnectionOption << token > pivot
Connection = comma_list1(connection_option) > pivot

protocol_name = token > pivot
protocol_version = token > pivot
protocol = Versioned << ((UpgradeToken << protocol_name) *
                         maybe(skip('/') * protocol_version)) > pivot
Upgrade = comma_list1(protocol) > pivot
Ejemplo n.º 32
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def extension_pragma(exclude_no_cache=False):
    return Parametrized << (
        (token__excluding(['no-cache']) if exclude_no_cache else token) *
        maybe(skip('=') * (token | quoted_string))
    ) > named(u'extension-pragma', RFC(7234), is_pivot=True)
Ejemplo n.º 33
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            u'anchor': URI_Reference, u'rel': rel, u'rev': rev,
            u'hreflang': hreflang, u'type': type_, u'title*': ext_value,
        }.get(name)
        if symbol is not None:
            value = parse(value, symbol, complain, 1158,
                          name=name, value=value)
        r.append((name, value))
        if name == u'rev':
            complain(1226)
    if u'rel' not in seen:
        complain(1309)
    return MultiDict(r)

link_param = (
    (CaseInsensitive << token) * skip(BWS) *
    maybe(skip(literal('=') * BWS) * (mark(token) |
                                      mark(quoted_string))))            > pivot

link_value = Parametrized << (
    skip('<') * URI_Reference * skip('>') *
    (_process_params << many(skip(OWS * ';' * OWS) * link_param)))      > pivot

Link = comma_list(link_value)                                           > pivot


anchor = URI_Reference                                                  > auto

reg_rel_type = CaseInsensitive << (
    LOALPHA + string(LOALPHA | DIGIT | '.' | '-'))                      > auto
ext_rel_type = URI                                                      > auto
relation_type = reg_rel_type | ext_rel_type                             > pivot
rel = rev = relation_type % many(skip(string1(SP)) * relation_type)     > auto