mirror of https://github.com/zulip/zulip.git
1102 lines
49 KiB
Python
1102 lines
49 KiB
Python
from __future__ import absolute_import
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from django.utils.translation import ugettext as _
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from django.utils.timezone import now
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from django.conf import settings
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from django.core import validators
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from django.core.exceptions import ValidationError
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from django.db import connection
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from django.db.models import Q
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from django.http import HttpRequest, HttpResponse
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from typing import Text
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from typing import Any, AnyStr, Callable, Iterable, Optional, Tuple, Union
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from zerver.lib.str_utils import force_bytes, force_text
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from zerver.lib.html_diff import highlight_html_differences
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from zerver.decorator import authenticated_api_view, authenticated_json_post_view, \
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has_request_variables, REQ, JsonableError, \
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to_non_negative_int
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from django.utils.html import escape as escape_html
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from zerver.lib import bugdown
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from zerver.lib.actions import recipient_for_emails, do_update_message_flags, \
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compute_mit_user_fullname, compute_irc_user_fullname, compute_jabber_user_fullname, \
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create_mirror_user_if_needed, check_send_message, do_update_message, \
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extract_recipients, truncate_body, render_incoming_message
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from zerver.lib.queue import queue_json_publish
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from zerver.lib.cache import (
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generic_bulk_cached_fetch,
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to_dict_cache_key_id,
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)
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from zerver.lib.message import (
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access_message,
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MessageDict,
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extract_message_dict,
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render_markdown,
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stringify_message_dict,
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)
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from zerver.lib.response import json_success, json_error
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from zerver.lib.sqlalchemy_utils import get_sqlalchemy_connection
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from zerver.lib.timestamp import datetime_to_timestamp
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from zerver.lib.utils import statsd
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from zerver.lib.validator import \
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check_list, check_int, check_dict, check_string, check_bool
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from zerver.models import Message, UserProfile, Stream, Subscription, \
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Realm, RealmAlias, Recipient, UserMessage, bulk_get_recipients, get_recipient, \
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get_user_profile_by_email, get_stream, \
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parse_usermessage_flags, \
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email_to_domain, get_realm, get_active_streams, \
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bulk_get_streams, get_user_profile_by_id
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from sqlalchemy import func
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from sqlalchemy.sql import select, join, column, literal_column, literal, and_, \
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or_, not_, union_all, alias, Selectable, Select, ColumnElement, table
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import re
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import ujson
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import datetime
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from six.moves import map
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import six
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LARGER_THAN_MAX_MESSAGE_ID = 10000000000000000
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class BadNarrowOperator(JsonableError):
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def __init__(self, desc, status_code=400):
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# type: (str, int) -> None
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self.desc = desc
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self.status_code = status_code
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def to_json_error_msg(self):
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# type: () -> str
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return _('Invalid narrow operator: {}').format(self.desc)
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Query = Any # TODO: Should be Select, but sqlalchemy stubs are busted
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ConditionTransform = Any # TODO: should be Callable[[ColumnElement], ColumnElement], but sqlalchemy stubs are busted
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# When you add a new operator to this, also update zerver/lib/narrow.py
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class NarrowBuilder(object):
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def __init__(self, user_profile, msg_id_column):
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# type: (UserProfile, str) -> None
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self.user_profile = user_profile
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self.msg_id_column = msg_id_column
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def add_term(self, query, term):
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# type: (Query, Dict[str, Any]) -> Query
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# We have to be careful here because we're letting users call a method
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# by name! The prefix 'by_' prevents it from colliding with builtin
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# Python __magic__ stuff.
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operator = term['operator']
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operand = term['operand']
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negated = term.get('negated', False)
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method_name = 'by_' + operator.replace('-', '_')
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method = getattr(self, method_name, None)
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if method is None:
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raise BadNarrowOperator('unknown operator ' + operator)
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if negated:
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maybe_negate = not_
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else:
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maybe_negate = lambda cond: cond
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return method(query, operand, maybe_negate)
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def by_has(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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if operand not in ['attachment', 'image', 'link']:
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raise BadNarrowOperator("unknown 'has' operand " + operand)
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col_name = 'has_' + operand
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cond = column(col_name)
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return query.where(maybe_negate(cond))
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def by_in(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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if operand == 'home':
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conditions = exclude_muting_conditions(self.user_profile, [])
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return query.where(and_(*conditions))
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elif operand == 'all':
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return query
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raise BadNarrowOperator("unknown 'in' operand " + operand)
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def by_is(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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if operand == 'private':
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query = query.select_from(join(query.froms[0], table("zerver_recipient"),
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column("recipient_id") ==
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literal_column("zerver_recipient.id")))
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cond = or_(column("type") == Recipient.PERSONAL,
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column("type") == Recipient.HUDDLE)
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return query.where(maybe_negate(cond))
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elif operand == 'starred':
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cond = column("flags").op("&")(UserMessage.flags.starred.mask) != 0
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return query.where(maybe_negate(cond))
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elif operand == 'mentioned' or operand == 'alerted':
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cond = column("flags").op("&")(UserMessage.flags.mentioned.mask) != 0
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return query.where(maybe_negate(cond))
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raise BadNarrowOperator("unknown 'is' operand " + operand)
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_alphanum = frozenset(
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'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789')
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def _pg_re_escape(self, pattern):
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# type: (Text) -> Text
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"""
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Escape user input to place in a regex
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Python's re.escape escapes unicode characters in a way which postgres
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fails on, u'\u03bb' to u'\\\u03bb'. This function will correctly escape
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them for postgres, u'\u03bb' to u'\\u03bb'.
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"""
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s = list(pattern)
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for i, c in enumerate(s):
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if c not in self._alphanum:
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if c == '\000':
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s[1] = '\\000'
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elif ord(c) >= 128:
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# convert the character to hex postgres regex will take
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# \uXXXX
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s[i] = '\\u{:0>4x}'.format(ord(c))
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else:
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s[i] = '\\' + c
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return ''.join(s)
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def by_stream(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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stream = get_stream(operand, self.user_profile.realm)
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if stream is None:
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raise BadNarrowOperator('unknown stream ' + operand)
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if self.user_profile.realm.is_zephyr_mirror_realm:
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# MIT users expect narrowing to "social" to also show messages to /^(un)*social(.d)*$/
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# (unsocial, ununsocial, social.d, etc)
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m = re.search(r'^(?:un)*(.+?)(?:\.d)*$', stream.name, re.IGNORECASE)
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# Since the regex has a `.+` in it and "" is invalid as a
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# stream name, this will always match
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assert(m is not None)
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base_stream_name = m.group(1)
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matching_streams = get_active_streams(self.user_profile.realm).filter(
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name__iregex=r'^(un)*%s(\.d)*$' % (self._pg_re_escape(base_stream_name),))
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matching_stream_ids = [matching_stream.id for matching_stream in matching_streams]
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recipients_map = bulk_get_recipients(Recipient.STREAM, matching_stream_ids)
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cond = column("recipient_id").in_([recipient.id for recipient in recipients_map.values()])
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return query.where(maybe_negate(cond))
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recipient = get_recipient(Recipient.STREAM, type_id=stream.id)
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cond = column("recipient_id") == recipient.id
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return query.where(maybe_negate(cond))
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def by_topic(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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if self.user_profile.realm.is_zephyr_mirror_realm:
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# MIT users expect narrowing to topic "foo" to also show messages to /^foo(.d)*$/
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# (foo, foo.d, foo.d.d, etc)
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m = re.search(r'^(.*?)(?:\.d)*$', operand, re.IGNORECASE)
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# Since the regex has a `.*` in it, this will always match
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assert(m is not None)
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base_topic = m.group(1)
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# Additionally, MIT users expect the empty instance and
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# instance "personal" to be the same.
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if base_topic in ('', 'personal', '(instance "")'):
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cond = or_(
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func.upper(column("subject")) == func.upper(literal("")),
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func.upper(column("subject")) == func.upper(literal(".d")),
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func.upper(column("subject")) == func.upper(literal(".d.d")),
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func.upper(column("subject")) == func.upper(literal(".d.d.d")),
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func.upper(column("subject")) == func.upper(literal(".d.d.d.d")),
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func.upper(column("subject")) == func.upper(literal("personal")),
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func.upper(column("subject")) == func.upper(literal("personal.d")),
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func.upper(column("subject")) == func.upper(literal("personal.d.d")),
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func.upper(column("subject")) == func.upper(literal("personal.d.d.d")),
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func.upper(column("subject")) == func.upper(literal("personal.d.d.d.d")),
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func.upper(column("subject")) == func.upper(literal('(instance "")')),
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func.upper(column("subject")) == func.upper(literal('(instance "").d')),
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func.upper(column("subject")) == func.upper(literal('(instance "").d.d')),
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func.upper(column("subject")) == func.upper(literal('(instance "").d.d.d')),
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func.upper(column("subject")) == func.upper(literal('(instance "").d.d.d.d')),
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)
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else:
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# We limit `.d` counts, since postgres has much better
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# query planning for this than they do for a regular
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# expression (which would sometimes table scan).
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cond = or_(
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func.upper(column("subject")) == func.upper(literal(base_topic)),
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func.upper(column("subject")) == func.upper(literal(base_topic + ".d")),
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func.upper(column("subject")) == func.upper(literal(base_topic + ".d.d")),
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func.upper(column("subject")) == func.upper(literal(base_topic + ".d.d.d")),
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func.upper(column("subject")) == func.upper(literal(base_topic + ".d.d.d.d")),
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)
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return query.where(maybe_negate(cond))
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cond = func.upper(column("subject")) == func.upper(literal(operand))
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return query.where(maybe_negate(cond))
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def by_sender(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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try:
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sender = get_user_profile_by_email(operand)
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except UserProfile.DoesNotExist:
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raise BadNarrowOperator('unknown user ' + operand)
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cond = column("sender_id") == literal(sender.id)
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return query.where(maybe_negate(cond))
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def by_near(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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return query
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def by_id(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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cond = self.msg_id_column == literal(operand)
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return query.where(maybe_negate(cond))
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def by_pm_with(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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if ',' in operand:
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# Huddle
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try:
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emails = [e.strip() for e in operand.split(',')]
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recipient = recipient_for_emails(emails, False,
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self.user_profile, self.user_profile)
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except ValidationError:
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raise BadNarrowOperator('unknown recipient ' + operand)
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cond = column("recipient_id") == recipient.id
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return query.where(maybe_negate(cond))
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else:
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# Personal message
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self_recipient = get_recipient(Recipient.PERSONAL, type_id=self.user_profile.id)
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if operand == self.user_profile.email:
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# Personals with self
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cond = and_(column("sender_id") == self.user_profile.id,
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column("recipient_id") == self_recipient.id)
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return query.where(maybe_negate(cond))
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# Personals with other user; include both directions.
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try:
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narrow_profile = get_user_profile_by_email(operand)
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except UserProfile.DoesNotExist:
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raise BadNarrowOperator('unknown user ' + operand)
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narrow_recipient = get_recipient(Recipient.PERSONAL, narrow_profile.id)
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cond = or_(and_(column("sender_id") == narrow_profile.id,
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column("recipient_id") == self_recipient.id),
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and_(column("sender_id") == self.user_profile.id,
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column("recipient_id") == narrow_recipient.id))
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return query.where(maybe_negate(cond))
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def by_search(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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if settings.USING_PGROONGA:
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return self._by_search_pgroonga(query, operand, maybe_negate)
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else:
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return self._by_search_tsearch(query, operand, maybe_negate)
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def _by_search_pgroonga(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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match_positions_byte = func.pgroonga.match_positions_byte
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query_extract_keywords = func.pgroonga.query_extract_keywords
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keywords = query_extract_keywords(operand)
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query = query.column(match_positions_byte(column("rendered_content"),
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keywords).label("content_matches"))
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query = query.column(match_positions_byte(column("subject"),
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keywords).label("subject_matches"))
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condition = column("search_pgroonga").op("@@")(operand)
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return query.where(maybe_negate(condition))
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def _by_search_tsearch(self, query, operand, maybe_negate):
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# type: (Query, str, ConditionTransform) -> Query
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tsquery = func.plainto_tsquery(literal("zulip.english_us_search"), literal(operand))
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ts_locs_array = func.ts_match_locs_array
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query = query.column(ts_locs_array(literal("zulip.english_us_search"),
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column("rendered_content"),
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tsquery).label("content_matches"))
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# We HTML-escape the subject in Postgres to avoid doing a server round-trip
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query = query.column(ts_locs_array(literal("zulip.english_us_search"),
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func.escape_html(column("subject")),
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tsquery).label("subject_matches"))
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# Do quoted string matching. We really want phrase
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# search here so we can ignore punctuation and do
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# stemming, but there isn't a standard phrase search
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# mechanism in Postgres
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for term in re.findall('"[^"]+"|\S+', operand):
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if term[0] == '"' and term[-1] == '"':
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term = term[1:-1]
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term = '%' + connection.ops.prep_for_like_query(term) + '%'
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cond = or_(column("content").ilike(term),
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column("subject").ilike(term))
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query = query.where(maybe_negate(cond))
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cond = column("search_tsvector").op("@@")(tsquery)
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return query.where(maybe_negate(cond))
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# Apparently, the offsets we get from tsearch_extras are counted in
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# unicode characters, not in bytes, so we do our processing with text,
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# not bytes.
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def highlight_string_text_offsets(text, locs):
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# type: (AnyStr, Iterable[Tuple[int, int]]) -> Text
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string = force_text(text)
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highlight_start = u'<span class="highlight">'
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highlight_stop = u'</span>'
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pos = 0
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result = u''
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for loc in locs:
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(offset, length) = loc
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result += string[pos:offset]
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result += highlight_start
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result += string[offset:offset + length]
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result += highlight_stop
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pos = offset + length
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result += string[pos:]
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return result
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def highlight_string_bytes_offsets(text, locs):
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# type: (AnyStr, Iterable[Tuple[int, int]]) -> Text
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string = force_bytes(text)
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highlight_start = b'<span class="highlight">'
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highlight_stop = b'</span>'
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pos = 0
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result = b''
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for loc in locs:
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(offset, length) = loc
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result += string[pos:offset]
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result += highlight_start
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result += string[offset:offset + length]
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result += highlight_stop
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pos = offset + length
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result += string[pos:]
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return force_text(result)
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def highlight_string(text, locs):
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# type: (AnyStr, Iterable[Tuple[int, int]]) -> Text
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if settings.USING_PGROONGA:
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return highlight_string_bytes_offsets(text, locs)
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else:
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return highlight_string_text_offsets(text, locs)
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def get_search_fields(rendered_content, subject, content_matches, subject_matches):
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# type: (Text, Text, Iterable[Tuple[int, int]], Iterable[Tuple[int, int]]) -> Dict[str, Text]
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return dict(match_content=highlight_string(rendered_content, content_matches),
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match_subject=highlight_string(escape_html(subject), subject_matches))
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def narrow_parameter(json):
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# type: (str) -> Optional[List[Dict[str, Any]]]
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# FIXME: A hack to support old mobile clients
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if json == '{}':
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return None
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data = ujson.loads(json)
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if not isinstance(data, list):
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raise ValueError("argument is not a list")
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def convert_term(elem):
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# type: (Union[Dict, List]) -> Dict[str, Any]
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# We have to support a legacy tuple format.
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if isinstance(elem, list):
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if (len(elem) != 2 or
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any(not isinstance(x, str) and not isinstance(x, Text)
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for x in elem)):
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raise ValueError("element is not a string pair")
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return dict(operator=elem[0], operand=elem[1])
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if isinstance(elem, dict):
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validator = check_dict([
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('operator', check_string),
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('operand', check_string),
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])
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error = validator('elem', elem)
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if error:
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raise JsonableError(error)
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# whitelist the fields we care about for now
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return dict(
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operator=elem['operator'],
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operand=elem['operand'],
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negated=elem.get('negated', False),
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)
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raise ValueError("element is not a dictionary")
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return list(map(convert_term, data))
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def is_public_stream(stream_name, realm):
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# type: (Text, Realm) -> bool
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"""
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Determine whether a stream is public, so that
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our caller can decide whether we can get
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historical messages for a narrowing search.
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Because of the way our search is currently structured,
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we may be passed an invalid stream here. We return
|
|
False in that situation, and subsequent code will do
|
|
validation and raise the appropriate JsonableError.
|
|
"""
|
|
stream = get_stream(stream_name, realm)
|
|
if stream is None:
|
|
return False
|
|
return stream.is_public()
|
|
|
|
|
|
def ok_to_include_history(narrow, realm):
|
|
# type: (Optional[Iterable[Dict[str, Any]]], Realm) -> bool
|
|
|
|
# There are occasions where we need to find Message rows that
|
|
# have no corresponding UserMessage row, because the user is
|
|
# reading a public stream that might include messages that
|
|
# were sent while the user was not subscribed, but which they are
|
|
# allowed to see. We have to be very careful about constructing
|
|
# queries in those situations, so this function should return True
|
|
# only if we are 100% sure that we're gonna add a clause to the
|
|
# query that narrows to a particular public stream on the user's realm.
|
|
# If we screw this up, then we can get into a nasty situation of
|
|
# polluting our narrow results with messages from other realms.
|
|
include_history = False
|
|
if narrow is not None:
|
|
for term in narrow:
|
|
if term['operator'] == "stream" and not term.get('negated', False):
|
|
if is_public_stream(term['operand'], realm):
|
|
include_history = True
|
|
# Disable historical messages if the user is narrowing on anything
|
|
# that's a property on the UserMessage table. There cannot be
|
|
# historical messages in these cases anyway.
|
|
for term in narrow:
|
|
if term['operator'] == "is":
|
|
include_history = False
|
|
|
|
return include_history
|
|
|
|
def get_stream_name_from_narrow(narrow):
|
|
# type: (Iterable[Dict[str, Any]]) -> Optional[Text]
|
|
for term in narrow:
|
|
if term['operator'] == 'stream':
|
|
return term['operand'].lower()
|
|
return None
|
|
|
|
def exclude_muting_conditions(user_profile, narrow):
|
|
# type: (UserProfile, Optional[Iterable[Dict[str, Any]]]) -> List[Selectable]
|
|
conditions = []
|
|
stream_name = get_stream_name_from_narrow(narrow)
|
|
|
|
if stream_name is None:
|
|
rows = Subscription.objects.filter(
|
|
user_profile=user_profile,
|
|
active=True,
|
|
in_home_view=False,
|
|
recipient__type=Recipient.STREAM
|
|
).values('recipient_id')
|
|
muted_recipient_ids = [row['recipient_id'] for row in rows]
|
|
if len(muted_recipient_ids) > 0:
|
|
# Only add the condition if we have muted streams to simplify/avoid warnings.
|
|
condition = not_(column("recipient_id").in_(muted_recipient_ids))
|
|
conditions.append(condition)
|
|
|
|
muted_topics = ujson.loads(user_profile.muted_topics)
|
|
if muted_topics:
|
|
if stream_name is not None:
|
|
muted_topics = [m for m in muted_topics if m[0].lower() == stream_name]
|
|
if not muted_topics:
|
|
return conditions
|
|
|
|
muted_streams = bulk_get_streams(user_profile.realm,
|
|
[muted[0] for muted in muted_topics])
|
|
muted_recipients = bulk_get_recipients(Recipient.STREAM,
|
|
[stream.id for stream in six.itervalues(muted_streams)])
|
|
recipient_map = dict((s.name.lower(), muted_recipients[s.id].id)
|
|
for s in six.itervalues(muted_streams))
|
|
|
|
muted_topics = [m for m in muted_topics if m[0].lower() in recipient_map]
|
|
|
|
if muted_topics:
|
|
def mute_cond(muted):
|
|
# type: (Tuple[str, str]) -> Selectable
|
|
stream_cond = column("recipient_id") == recipient_map[muted[0].lower()]
|
|
topic_cond = func.upper(column("subject")) == func.upper(muted[1])
|
|
return and_(stream_cond, topic_cond)
|
|
|
|
condition = not_(or_(*list(map(mute_cond, muted_topics))))
|
|
return conditions + [condition]
|
|
|
|
return conditions
|
|
|
|
@has_request_variables
|
|
def get_old_messages_backend(request, user_profile,
|
|
anchor = REQ(converter=int),
|
|
num_before = REQ(converter=to_non_negative_int),
|
|
num_after = REQ(converter=to_non_negative_int),
|
|
narrow = REQ('narrow', converter=narrow_parameter, default=None),
|
|
use_first_unread_anchor = REQ(default=False, converter=ujson.loads),
|
|
apply_markdown=REQ(default=True,
|
|
converter=ujson.loads)):
|
|
# type: (HttpRequest, UserProfile, int, int, int, Optional[List[Dict[str, Any]]], bool, bool) -> HttpResponse
|
|
include_history = ok_to_include_history(narrow, user_profile.realm)
|
|
|
|
if include_history and not use_first_unread_anchor:
|
|
query = select([column("id").label("message_id")], None, table("zerver_message"))
|
|
inner_msg_id_col = literal_column("zerver_message.id")
|
|
elif narrow is None:
|
|
query = select([column("message_id"), column("flags")],
|
|
column("user_profile_id") == literal(user_profile.id),
|
|
table("zerver_usermessage"))
|
|
inner_msg_id_col = column("message_id")
|
|
else:
|
|
# TODO: Don't do this join if we're not doing a search
|
|
query = select([column("message_id"), column("flags")],
|
|
column("user_profile_id") == literal(user_profile.id),
|
|
join(table("zerver_usermessage"), table("zerver_message"),
|
|
literal_column("zerver_usermessage.message_id") ==
|
|
literal_column("zerver_message.id")))
|
|
inner_msg_id_col = column("message_id")
|
|
|
|
num_extra_messages = 1
|
|
is_search = False
|
|
|
|
if narrow is not None:
|
|
# Add some metadata to our logging data for narrows
|
|
verbose_operators = []
|
|
for term in narrow:
|
|
if term['operator'] == "is":
|
|
verbose_operators.append("is:" + term['operand'])
|
|
else:
|
|
verbose_operators.append(term['operator'])
|
|
request._log_data['extra'] = "[%s]" % (",".join(verbose_operators),)
|
|
|
|
# Build the query for the narrow
|
|
num_extra_messages = 0
|
|
builder = NarrowBuilder(user_profile, inner_msg_id_col)
|
|
search_term = None # type: Optional[Dict[str, Any]]
|
|
for term in narrow:
|
|
if term['operator'] == 'search':
|
|
if not is_search:
|
|
search_term = term
|
|
query = query.column(column("subject")).column(column("rendered_content"))
|
|
is_search = True
|
|
else:
|
|
# Join the search operators if there are multiple of them
|
|
search_term['operand'] += ' ' + term['operand']
|
|
else:
|
|
query = builder.add_term(query, term)
|
|
if is_search:
|
|
query = builder.add_term(query, search_term)
|
|
|
|
# We add 1 to the number of messages requested if no narrow was
|
|
# specified to ensure that the resulting list always contains the
|
|
# anchor message. If a narrow was specified, the anchor message
|
|
# might not match the narrow anyway.
|
|
if num_after != 0:
|
|
num_after += num_extra_messages
|
|
else:
|
|
num_before += num_extra_messages
|
|
|
|
sa_conn = get_sqlalchemy_connection()
|
|
if use_first_unread_anchor:
|
|
condition = column("flags").op("&")(UserMessage.flags.read.mask) == 0
|
|
|
|
# We exclude messages on muted topics when finding the first unread
|
|
# message in this narrow
|
|
muting_conditions = exclude_muting_conditions(user_profile, narrow)
|
|
if muting_conditions:
|
|
condition = and_(condition, *muting_conditions)
|
|
|
|
first_unread_query = query.where(condition)
|
|
first_unread_query = first_unread_query.order_by(inner_msg_id_col.asc()).limit(1)
|
|
first_unread_result = list(sa_conn.execute(first_unread_query).fetchall())
|
|
if len(first_unread_result) > 0:
|
|
anchor = first_unread_result[0][0]
|
|
else:
|
|
anchor = LARGER_THAN_MAX_MESSAGE_ID
|
|
|
|
before_query = None
|
|
after_query = None
|
|
if num_before != 0:
|
|
before_anchor = anchor
|
|
if num_after != 0:
|
|
# Don't include the anchor in both the before query and the after query
|
|
before_anchor = anchor - 1
|
|
before_query = query.where(inner_msg_id_col <= before_anchor) \
|
|
.order_by(inner_msg_id_col.desc()).limit(num_before)
|
|
if num_after != 0:
|
|
after_query = query.where(inner_msg_id_col >= anchor) \
|
|
.order_by(inner_msg_id_col.asc()).limit(num_after)
|
|
|
|
if anchor == LARGER_THAN_MAX_MESSAGE_ID:
|
|
# There's no need for an after_query if we're targeting just the target message.
|
|
after_query = None
|
|
|
|
if before_query is not None:
|
|
if after_query is not None:
|
|
query = union_all(before_query.self_group(), after_query.self_group())
|
|
else:
|
|
query = before_query
|
|
elif after_query is not None:
|
|
query = after_query
|
|
else:
|
|
# This can happen when a narrow is specified.
|
|
query = query.where(inner_msg_id_col == anchor)
|
|
|
|
main_query = alias(query)
|
|
query = select(main_query.c, None, main_query).order_by(column("message_id").asc())
|
|
# This is a hack to tag the query we use for testing
|
|
query = query.prefix_with("/* get_old_messages */")
|
|
query_result = list(sa_conn.execute(query).fetchall())
|
|
|
|
# The following is a little messy, but ensures that the code paths
|
|
# are similar regardless of the value of include_history. The
|
|
# 'user_messages' dictionary maps each message to the user's
|
|
# UserMessage object for that message, which we will attach to the
|
|
# rendered message dict before returning it. We attempt to
|
|
# bulk-fetch rendered message dicts from remote cache using the
|
|
# 'messages' list.
|
|
search_fields = dict() # type: Dict[int, Dict[str, Text]]
|
|
message_ids = [] # type: List[int]
|
|
user_message_flags = {} # type: Dict[int, List[str]]
|
|
if include_history:
|
|
message_ids = [row[0] for row in query_result]
|
|
|
|
# TODO: This could be done with an outer join instead of two queries
|
|
user_message_flags = dict((user_message.message_id, user_message.flags_list()) for user_message in
|
|
UserMessage.objects.filter(user_profile=user_profile,
|
|
message__id__in=message_ids))
|
|
for row in query_result:
|
|
message_id = row[0]
|
|
if user_message_flags.get(message_id) is None:
|
|
user_message_flags[message_id] = ["read", "historical"]
|
|
if is_search:
|
|
(_, subject, rendered_content, content_matches, subject_matches) = row
|
|
search_fields[message_id] = get_search_fields(rendered_content, subject,
|
|
content_matches, subject_matches)
|
|
else:
|
|
for row in query_result:
|
|
message_id = row[0]
|
|
flags = row[1]
|
|
user_message_flags[message_id] = parse_usermessage_flags(flags)
|
|
|
|
message_ids.append(message_id)
|
|
|
|
if is_search:
|
|
(_, _, subject, rendered_content, content_matches, subject_matches) = row
|
|
search_fields[message_id] = get_search_fields(rendered_content, subject,
|
|
content_matches, subject_matches)
|
|
|
|
cache_transformer = lambda row: MessageDict.build_dict_from_raw_db_row(row, apply_markdown)
|
|
id_fetcher = lambda row: row['id']
|
|
|
|
message_dicts = generic_bulk_cached_fetch(lambda message_id: to_dict_cache_key_id(message_id, apply_markdown),
|
|
Message.get_raw_db_rows,
|
|
message_ids,
|
|
id_fetcher=id_fetcher,
|
|
cache_transformer=cache_transformer,
|
|
extractor=extract_message_dict,
|
|
setter=stringify_message_dict)
|
|
|
|
message_list = []
|
|
for message_id in message_ids:
|
|
msg_dict = message_dicts[message_id]
|
|
msg_dict.update({"flags": user_message_flags[message_id]})
|
|
msg_dict.update(search_fields.get(message_id, {}))
|
|
message_list.append(msg_dict)
|
|
|
|
statsd.incr('loaded_old_messages', len(message_list))
|
|
ret = {'messages': message_list,
|
|
"result": "success",
|
|
"msg": ""}
|
|
return json_success(ret)
|
|
|
|
@has_request_variables
|
|
def update_message_flags(request, user_profile,
|
|
messages=REQ(validator=check_list(check_int)),
|
|
operation=REQ('op'), flag=REQ(),
|
|
all=REQ(validator=check_bool, default=False),
|
|
stream_name=REQ(default=None),
|
|
topic_name=REQ(default=None)):
|
|
# type: (HttpRequest, UserProfile, List[int], Text, Text, bool, Optional[Text], Optional[Text]) -> HttpResponse
|
|
if all:
|
|
target_count_str = "all"
|
|
else:
|
|
target_count_str = str(len(messages))
|
|
log_data_str = "[%s %s/%s]" % (operation, flag, target_count_str)
|
|
request._log_data["extra"] = log_data_str
|
|
stream = None
|
|
if stream_name is not None:
|
|
stream = get_stream(stream_name, user_profile.realm)
|
|
if not stream:
|
|
raise JsonableError(_('No such stream \'%s\'') % (stream_name,))
|
|
if topic_name:
|
|
topic_exists = UserMessage.objects.filter(user_profile=user_profile,
|
|
message__recipient__type_id=stream.id,
|
|
message__recipient__type=Recipient.STREAM,
|
|
message__subject__iexact=topic_name).exists()
|
|
if not topic_exists:
|
|
raise JsonableError(_('No such topic \'%s\'') % (topic_name,))
|
|
count = do_update_message_flags(user_profile, operation, flag, messages,
|
|
all, stream, topic_name)
|
|
|
|
# If we succeed, update log data str with the actual count for how
|
|
# many messages were updated.
|
|
if count != len(messages):
|
|
log_data_str = "[%s %s/%s] actually %s" % (operation, flag, target_count_str, count)
|
|
request._log_data["extra"] = log_data_str
|
|
|
|
return json_success({'result': 'success',
|
|
'messages': messages,
|
|
'msg': ''})
|
|
|
|
def create_mirrored_message_users(request, user_profile, recipients):
|
|
# type: (HttpResponse, UserProfile, Iterable[Text]) -> Tuple[bool, Optional[UserProfile]]
|
|
if "sender" not in request.POST:
|
|
return (False, None)
|
|
|
|
sender_email = request.POST["sender"].strip().lower()
|
|
referenced_users = set([sender_email])
|
|
if request.POST['type'] == 'private':
|
|
for email in recipients:
|
|
referenced_users.add(email.lower())
|
|
|
|
if request.client.name == "zephyr_mirror":
|
|
user_check = same_realm_zephyr_user
|
|
fullname_function = compute_mit_user_fullname
|
|
elif request.client.name == "irc_mirror":
|
|
user_check = same_realm_irc_user
|
|
fullname_function = compute_irc_user_fullname
|
|
elif request.client.name in ("jabber_mirror", "JabberMirror"):
|
|
user_check = same_realm_jabber_user
|
|
fullname_function = compute_jabber_user_fullname
|
|
else:
|
|
# Unrecognized mirroring client
|
|
return (False, None)
|
|
|
|
for email in referenced_users:
|
|
# Check that all referenced users are in our realm:
|
|
if not user_check(user_profile, email):
|
|
return (False, None)
|
|
|
|
# Create users for the referenced users, if needed.
|
|
for email in referenced_users:
|
|
create_mirror_user_if_needed(user_profile.realm, email, fullname_function)
|
|
|
|
sender = get_user_profile_by_email(sender_email)
|
|
return (True, sender)
|
|
|
|
def same_realm_zephyr_user(user_profile, email):
|
|
# type: (UserProfile, Text) -> bool
|
|
#
|
|
# Are the sender and recipient both addresses in the same Zephyr
|
|
# mirroring realm? We have to handle this specially, inferring
|
|
# the domain from the e-mail address, because the recipient may
|
|
# not existing in Zulip and we may need to make a stub Zephyr
|
|
# mirroring user on the fly.
|
|
try:
|
|
validators.validate_email(email)
|
|
except ValidationError:
|
|
return False
|
|
|
|
domain = email_to_domain(email)
|
|
|
|
# Assumes allow_subdomains=False for all RealmAlias's corresponding to
|
|
# these realms.
|
|
return user_profile.realm.is_zephyr_mirror_realm and \
|
|
RealmAlias.objects.filter(realm=user_profile.realm, domain=domain).exists()
|
|
|
|
def same_realm_irc_user(user_profile, email):
|
|
# type: (UserProfile, Text) -> bool
|
|
# Check whether the target email address is an IRC user in the
|
|
# same realm as user_profile, i.e. if the domain were example.com,
|
|
# the IRC user would need to be username@irc.example.com
|
|
try:
|
|
validators.validate_email(email)
|
|
except ValidationError:
|
|
return False
|
|
|
|
domain = email_to_domain(email).replace("irc.", "")
|
|
|
|
# Assumes allow_subdomains=False for all RealmAlias's corresponding to
|
|
# these realms.
|
|
return RealmAlias.objects.filter(realm=user_profile.realm, domain=domain).exists()
|
|
|
|
def same_realm_jabber_user(user_profile, email):
|
|
# type: (UserProfile, Text) -> bool
|
|
try:
|
|
validators.validate_email(email)
|
|
except ValidationError:
|
|
return False
|
|
|
|
# If your Jabber users have a different email domain than the
|
|
# Zulip users, this is where you would do any translation.
|
|
domain = email_to_domain(email)
|
|
|
|
# Assumes allow_subdomains=False for all RealmAlias's corresponding to
|
|
# these realms.
|
|
return RealmAlias.objects.filter(realm=user_profile.realm, domain=domain).exists()
|
|
|
|
# We do not @require_login for send_message_backend, since it is used
|
|
# both from the API and the web service. Code calling
|
|
# send_message_backend should either check the API key or check that
|
|
# the user is logged in.
|
|
@has_request_variables
|
|
def send_message_backend(request, user_profile,
|
|
message_type_name = REQ('type'),
|
|
message_to = REQ('to', converter=extract_recipients, default=[]),
|
|
forged = REQ(default=False),
|
|
subject_name = REQ('subject', lambda x: x.strip(), None),
|
|
message_content = REQ('content'),
|
|
realm_str = REQ('realm_str', default=None),
|
|
local_id = REQ(default=None),
|
|
queue_id = REQ(default=None)):
|
|
# type: (HttpRequest, UserProfile, Text, List[Text], bool, Optional[Text], Text, Optional[Text], Optional[Text], Optional[Text]) -> HttpResponse
|
|
client = request.client
|
|
is_super_user = request.user.is_api_super_user
|
|
if forged and not is_super_user:
|
|
return json_error(_("User not authorized for this query"))
|
|
|
|
realm = None
|
|
if realm_str and realm_str != user_profile.realm.string_id:
|
|
if not is_super_user:
|
|
# The email gateway bot needs to be able to send messages in
|
|
# any realm.
|
|
return json_error(_("User not authorized for this query"))
|
|
realm = get_realm(realm_str)
|
|
if not realm:
|
|
return json_error(_("Unknown realm %s") % (realm_str,))
|
|
|
|
if client.name in ["zephyr_mirror", "irc_mirror", "jabber_mirror", "JabberMirror"]:
|
|
# Here's how security works for mirroring:
|
|
#
|
|
# For private messages, the message must be (1) both sent and
|
|
# received exclusively by users in your realm, and (2)
|
|
# received by the forwarding user.
|
|
#
|
|
# For stream messages, the message must be (1) being forwarded
|
|
# by an API superuser for your realm and (2) being sent to a
|
|
# mirrored stream (any stream for the Zephyr and Jabber
|
|
# mirrors, but only streams with names starting with a "#" for
|
|
# IRC mirrors)
|
|
#
|
|
# The security checks are split between the below code
|
|
# (especially create_mirrored_message_users which checks the
|
|
# same-realm constraint) and recipient_for_emails (which
|
|
# checks that PMs are received by the forwarding user)
|
|
if "sender" not in request.POST:
|
|
return json_error(_("Missing sender"))
|
|
if message_type_name != "private" and not is_super_user:
|
|
return json_error(_("User not authorized for this query"))
|
|
(valid_input, mirror_sender) = \
|
|
create_mirrored_message_users(request, user_profile, message_to)
|
|
if not valid_input:
|
|
return json_error(_("Invalid mirrored message"))
|
|
if client.name == "zephyr_mirror" and not user_profile.realm.is_zephyr_mirror_realm:
|
|
return json_error(_("Invalid mirrored realm"))
|
|
if (client.name == "irc_mirror" and message_type_name != "private" and
|
|
not message_to[0].startswith("#")):
|
|
return json_error(_("IRC stream names must start with #"))
|
|
sender = mirror_sender
|
|
else:
|
|
sender = user_profile
|
|
|
|
ret = check_send_message(sender, client, message_type_name, message_to,
|
|
subject_name, message_content, forged=forged,
|
|
forged_timestamp = request.POST.get('time'),
|
|
forwarder_user_profile=user_profile, realm=realm,
|
|
local_id=local_id, sender_queue_id=queue_id)
|
|
return json_success({"id": ret})
|
|
|
|
def fill_edit_history_entries(message_history, message):
|
|
# type: (List[Dict[str, Any]], Message) -> None
|
|
"""This fills out the message edit history entries from the database,
|
|
which are designed to have the minimum data possible, to instead
|
|
have the current topic + content as of that time, plus data on
|
|
whatever changed. This makes it much simpler to do future
|
|
processing.
|
|
|
|
Note that this mutates what is passed to it, which is sorta a bad pattern.
|
|
"""
|
|
prev_content = message.content
|
|
prev_rendered_content = message.rendered_content
|
|
prev_topic = message.subject
|
|
assert(datetime_to_timestamp(message.last_edit_time) == message_history[0]['timestamp'])
|
|
|
|
for entry in message_history:
|
|
entry['topic'] = prev_topic
|
|
if 'prev_subject' in entry:
|
|
# We replace use of 'subject' with 'topic' for downstream simplicity
|
|
prev_topic = entry['prev_subject']
|
|
entry['prev_topic'] = prev_topic
|
|
del entry['prev_subject']
|
|
|
|
entry['content'] = prev_content
|
|
entry['rendered_content'] = prev_rendered_content
|
|
if 'prev_content' in entry:
|
|
del entry['prev_rendered_content_version']
|
|
prev_content = entry['prev_content']
|
|
prev_rendered_content = entry['prev_rendered_content']
|
|
entry['content_html_diff'] = highlight_html_differences(
|
|
prev_rendered_content,
|
|
entry['rendered_content'])
|
|
|
|
message_history.append(dict(
|
|
topic = prev_topic,
|
|
content = prev_content,
|
|
rendered_content = prev_rendered_content,
|
|
timestamp = datetime_to_timestamp(message.pub_date),
|
|
user_id = message.sender_id,
|
|
))
|
|
|
|
@has_request_variables
|
|
def get_message_edit_history(request, user_profile,
|
|
message_id=REQ(converter=to_non_negative_int)):
|
|
# type: (HttpRequest, UserProfile, int) -> HttpResponse
|
|
message, ignored_user_message = access_message(user_profile, message_id)
|
|
|
|
# Extract the message edit history from the message
|
|
message_edit_history = ujson.loads(message.edit_history)
|
|
|
|
# Fill in all the extra data that will make it usable
|
|
fill_edit_history_entries(message_edit_history, message)
|
|
return json_success({"message_history": reversed(message_edit_history)})
|
|
|
|
@has_request_variables
|
|
def update_message_backend(request, user_profile,
|
|
message_id=REQ(converter=to_non_negative_int),
|
|
subject=REQ(default=None),
|
|
propagate_mode=REQ(default="change_one"),
|
|
content=REQ(default=None)):
|
|
# type: (HttpRequest, UserProfile, int, Optional[Text], Optional[str], Optional[Text]) -> HttpResponse
|
|
if not user_profile.realm.allow_message_editing:
|
|
return json_error(_("Your organization has turned off message editing."))
|
|
|
|
message, ignored_user_message = access_message(user_profile, message_id)
|
|
|
|
# You only have permission to edit a message if:
|
|
# 1. You sent it, OR:
|
|
# 2. This is a topic-only edit for a (no topic) message, OR:
|
|
# 3. This is a topic-only edit and you are an admin.
|
|
if message.sender == user_profile:
|
|
pass
|
|
elif (content is None) and ((message.topic_name() == "(no topic)") or
|
|
user_profile.is_realm_admin):
|
|
pass
|
|
else:
|
|
raise JsonableError(_("You don't have permission to edit this message"))
|
|
|
|
# If there is a change to the content, check that it hasn't been too long
|
|
# Allow an extra 20 seconds since we potentially allow editing 15 seconds
|
|
# past the limit, and in case there are network issues, etc. The 15 comes
|
|
# from (min_seconds_to_edit + seconds_left_buffer) in message_edit.js; if
|
|
# you change this value also change those two parameters in message_edit.js.
|
|
edit_limit_buffer = 20
|
|
if content is not None and user_profile.realm.message_content_edit_limit_seconds > 0:
|
|
deadline_seconds = user_profile.realm.message_content_edit_limit_seconds + edit_limit_buffer
|
|
if (now() - message.pub_date) > datetime.timedelta(seconds=deadline_seconds):
|
|
raise JsonableError(_("The time limit for editing this message has past"))
|
|
|
|
if subject is None and content is None:
|
|
return json_error(_("Nothing to change"))
|
|
if subject is not None:
|
|
subject = subject.strip()
|
|
if subject == "":
|
|
raise JsonableError(_("Topic can't be empty"))
|
|
rendered_content = None
|
|
links_for_embed = set() # type: Set[Text]
|
|
if content is not None:
|
|
content = content.strip()
|
|
if content == "":
|
|
content = "(deleted)"
|
|
content = truncate_body(content)
|
|
|
|
# We exclude UserMessage.flags.historical rows since those
|
|
# users did not receive the message originally, and thus
|
|
# probably are not relevant for reprocessed alert_words,
|
|
# mentions and similar rendering features. This may be a
|
|
# decision we change in the future.
|
|
ums = UserMessage.objects.filter(
|
|
message=message.id,
|
|
flags=~UserMessage.flags.historical)
|
|
|
|
message_users = UserProfile.objects.select_related().filter(
|
|
id__in={um.user_profile_id for um in ums})
|
|
|
|
# We render the message using the current user's realm; since
|
|
# the cross-realm bots never edit messages, this should be
|
|
# always correct.
|
|
# Note: If rendering fails, the called code will raise a JsonableError.
|
|
rendered_content = render_incoming_message(message,
|
|
content,
|
|
message_users,
|
|
user_profile.realm)
|
|
links_for_embed |= message.links_for_preview
|
|
|
|
number_changed = do_update_message(user_profile, message, subject,
|
|
propagate_mode, content, rendered_content)
|
|
# Include the number of messages changed in the logs
|
|
request._log_data['extra'] = "[%s]" % (number_changed,)
|
|
if links_for_embed and getattr(settings, 'INLINE_URL_EMBED_PREVIEW', None):
|
|
event_data = {
|
|
'message_id': message.id,
|
|
'message_content': message.content,
|
|
'urls': links_for_embed}
|
|
queue_json_publish('embed_links', event_data, lambda x: None)
|
|
return json_success()
|
|
|
|
@has_request_variables
|
|
def json_fetch_raw_message(request, user_profile,
|
|
message_id=REQ(converter=to_non_negative_int)):
|
|
# type: (HttpRequest, UserProfile, int) -> HttpResponse
|
|
(message, user_message) = access_message(user_profile, message_id)
|
|
return json_success({"raw_content": message.content})
|
|
|
|
@has_request_variables
|
|
def render_message_backend(request, user_profile, content=REQ()):
|
|
# type: (HttpRequest, UserProfile, Text) -> HttpResponse
|
|
message = Message()
|
|
message.sender = user_profile
|
|
message.content = content
|
|
message.sending_client = request.client
|
|
|
|
rendered_content = render_markdown(message, content, realm=user_profile.realm)
|
|
return json_success({"rendered": rendered_content})
|
|
|
|
@authenticated_json_post_view
|
|
def json_messages_in_narrow(request, user_profile):
|
|
# type: (HttpRequest, UserProfile) -> HttpResponse
|
|
return messages_in_narrow_backend(request, user_profile)
|
|
|
|
@has_request_variables
|
|
def messages_in_narrow_backend(request, user_profile,
|
|
msg_ids = REQ(validator=check_list(check_int)),
|
|
narrow = REQ(converter=narrow_parameter)):
|
|
# type: (HttpRequest, UserProfile, List[int], List[Dict[str, Any]]) -> HttpResponse
|
|
|
|
# Note that this function will only work on messages the user
|
|
# actually received
|
|
|
|
# TODO: We assume that the narrow is a search. For now this works because
|
|
# the browser only ever calls this function for searches, since it can't
|
|
# apply that narrow operator itself.
|
|
|
|
query = select([column("message_id"), column("subject"), column("rendered_content")],
|
|
and_(column("user_profile_id") == literal(user_profile.id),
|
|
column("message_id").in_(msg_ids)),
|
|
join(table("zerver_usermessage"), table("zerver_message"),
|
|
literal_column("zerver_usermessage.message_id") ==
|
|
literal_column("zerver_message.id")))
|
|
|
|
builder = NarrowBuilder(user_profile, column("message_id"))
|
|
for term in narrow:
|
|
query = builder.add_term(query, term)
|
|
|
|
sa_conn = get_sqlalchemy_connection()
|
|
query_result = list(sa_conn.execute(query).fetchall())
|
|
|
|
search_fields = dict()
|
|
for row in query_result:
|
|
(message_id, subject, rendered_content, content_matches, subject_matches) = row
|
|
search_fields[message_id] = get_search_fields(rendered_content, subject,
|
|
content_matches, subject_matches)
|
|
|
|
return json_success({"messages": search_fields})
|