| 1 |
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-module(mam_iq). |
| 2 |
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| 3 |
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-export([action/1]). |
| 4 |
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-export([action_type/1]). |
| 5 |
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-export([form_to_lookup_params/5]). |
| 6 |
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-export([lookup_params_with_archive_details/4]). |
| 7 |
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| 8 |
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-import(mod_mam_utils, |
| 9 |
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[maybe_microseconds/1, |
| 10 |
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get_one_of_path/2]). |
| 11 |
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| 12 |
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-include("jlib.hrl"). |
| 13 |
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-include("mongoose_rsm.hrl"). |
| 14 |
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| 15 |
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-type action() :: 'mam_get_prefs' |
| 16 |
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| 'mam_lookup_messages' |
| 17 |
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| 'mam_set_prefs' |
| 18 |
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| 'mam_set_message_form' |
| 19 |
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| 'mam_get_message_form' |
| 20 |
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| 'mam_get_metadata'. |
| 21 |
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| 22 |
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-type lookup_params() :: #{ |
| 23 |
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archive_id => mod_mam:archive_id(), |
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owner_jid => jid:jid(), |
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caller_jid => jid:jid(), |
| 26 |
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rsm => jlib:rsm_in() | undefined, |
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max_result_limit => non_neg_integer(), |
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%% Contains page size value provided by client or enforced by server. |
| 29 |
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%% It's a final value used by backend DB modules. |
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page_size => non_neg_integer(), |
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ordering_direction => backward | forward, |
| 32 |
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%% unix_timestamp() is in microseconds |
| 33 |
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now => mod_mam:unix_timestamp(), |
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%% Filtering by date |
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start_ts => mod_mam:unix_timestamp() | undefined, |
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end_ts => mod_mam:unix_timestamp() | undefined, |
| 37 |
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%% Filtering by contact |
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with_jid => jid:jid() | undefined, |
| 39 |
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%% Filtering by body text |
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search_text => binary() | undefined, |
| 41 |
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%% Filtering Result Set based on message ids |
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borders => mod_mam:borders() | undefined, |
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%% Affects 'policy-violation' for a case when: |
| 44 |
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%% - user does not use forms to query archive |
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%% - user does not provide "set" element |
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%% see form_to_lookup_params for more info |
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limit_passed => boolean(), |
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%% Optimizations flags |
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%% see form_to_lookup_params for more info |
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is_simple => true | false, |
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%% Contains information whether the client requested to get the results in reversed order |
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flip_page => true | false, |
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%% If the groupchat messages are stored in the user's archive, |
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%% this parameter is used to decide whether to include them or not |
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include_groupchat => true | false, |
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%% Can have more fields, added in maybe_add_extra_lookup_params function |
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%% in runtime |
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atom() => _ |
| 59 |
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}. |
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-export_type([action/0, lookup_params/0]). |
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| 63 |
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-callback extra_lookup_params(jlib:iq(), lookup_params()) -> lookup_params(). |
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-spec action(jlib:iq()) -> action(). |
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action(IQ = #iq{xmlns = ?NS_MAM_04}) -> |
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:-( |
action_v04plus(IQ); |
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action(IQ = #iq{xmlns = ?NS_MAM_06}) -> |
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:-( |
action_v04plus(IQ). |
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action_v04plus(#iq{type = Action, sub_el = #xmlel{name = Category}}) -> |
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:-( |
case {Action, Category} of |
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:-( |
{set, <<"prefs">>} -> mam_set_prefs; |
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:-( |
{get, <<"prefs">>} -> mam_get_prefs; |
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:-( |
{get, <<"query">>} -> mam_get_message_form; |
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:-( |
{set, <<"query">>} -> mam_set_message_form; |
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:-( |
{get, <<"metadata">>} -> mam_get_metadata |
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end. |
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-spec action_type(action()) -> 'get' | 'set'. |
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:-( |
action_type(mam_get_prefs) -> get; |
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:-( |
action_type(mam_set_prefs) -> set; |
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:-( |
action_type(mam_lookup_messages) -> get; |
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:-( |
action_type(mam_set_message_form) -> get; |
| 85 |
:-( |
action_type(mam_get_message_form) -> get; |
| 86 |
:-( |
action_type(mam_get_metadata) -> get. |
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%% @doc Convert id into internal format. |
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-spec fix_rsm('none' | jlib:rsm_in()) -> 'undefined' | jlib:rsm_in(). |
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fix_rsm(none) -> |
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:-( |
undefined; |
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fix_rsm(RSM=#rsm_in{direction = aft, id = <<>>}) -> |
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:-( |
RSM#rsm_in{direction = undefined, id = undefined}; %% First page |
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fix_rsm(RSM=#rsm_in{direction = aft, id = undefined}) -> |
| 95 |
:-( |
RSM#rsm_in{direction = undefined}; %% First page |
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fix_rsm(RSM=#rsm_in{id = undefined}) -> |
| 97 |
:-( |
RSM; |
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fix_rsm(RSM=#rsm_in{id = <<>>}) -> |
| 99 |
:-( |
RSM#rsm_in{id = undefined}; |
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fix_rsm(RSM=#rsm_in{id = BExtMessID}) when is_binary(BExtMessID) -> |
| 101 |
:-( |
MessID = mod_mam_utils:external_binary_to_mess_id(BExtMessID), |
| 102 |
:-( |
RSM#rsm_in{id = MessID}. |
| 103 |
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%% @doc This element's name is "limit". But it must be "max" according XEP-0313. |
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-spec elem_to_limit(any()) -> any(). |
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elem_to_limit(QueryEl) -> |
| 107 |
:-( |
get_one_of_path(QueryEl, [ |
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[{element, <<"set">>}, {element, <<"max">>}, cdata], |
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[{element, <<"set">>}, {element, <<"limit">>}, cdata] |
| 110 |
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]). |
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-spec form_to_start_microseconds(mongoose_data_forms:kv_map()) -> 'undefined' | non_neg_integer(). |
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form_to_start_microseconds(#{<<"start">> := [V]}) -> |
| 115 |
:-( |
maybe_microseconds(V); |
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form_to_start_microseconds(#{}) -> |
| 117 |
:-( |
undefined. |
| 118 |
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| 119 |
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| 120 |
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-spec form_to_end_microseconds(mongoose_data_forms:kv_map()) -> 'undefined' | non_neg_integer(). |
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form_to_end_microseconds(#{<<"end">> := [V]}) -> |
| 122 |
:-( |
maybe_microseconds(V); |
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form_to_end_microseconds(#{}) -> |
| 124 |
:-( |
undefined. |
| 125 |
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| 126 |
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-spec form_to_with_jid(mongoose_data_forms:kv_map()) -> 'error' | 'undefined' | jid:jid(). |
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form_to_with_jid(#{<<"with">> := [JID]}) -> |
| 128 |
:-( |
jid:from_binary(JID); |
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form_to_with_jid(#{}) -> |
| 130 |
:-( |
undefined. |
| 131 |
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| 132 |
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-spec form_to_lookup_params(jlib:iq(), integer(), integer(), undefined | module(), boolean()) -> |
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lookup_params(). |
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form_to_lookup_params(#iq{sub_el = QueryEl} = IQ, MaxResultLimit, DefaultResultLimit, Module, EnforceSimple) -> |
| 135 |
:-( |
Params0 = common_lookup_params(QueryEl, MaxResultLimit, DefaultResultLimit), |
| 136 |
:-( |
KVs = query_to_map(QueryEl), |
| 137 |
:-( |
Params = Params0#{ |
| 138 |
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%% Filtering by date. |
| 139 |
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%% Start :: integer() | undefined |
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start_ts => form_to_start_microseconds(KVs), |
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end_ts => form_to_end_microseconds(KVs), |
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%% Filtering by contact. |
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with_jid => form_to_with_jid(KVs), |
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%% Filtering by text |
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search_text => mod_mam_utils:form_to_text(KVs), |
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| 147 |
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borders => mod_mam_utils:form_borders_decode(KVs), |
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%% Whether or not the client query included a <set/> element, |
| 149 |
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%% the server MAY simply return its limited results. |
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%% So, disable 'policy-violation'. |
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limit_passed => true, |
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%% `is_simple' can contain: |
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%% - true - do not count records (useful during pagination, when we already |
| 154 |
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%% know how many messages we have from a previous query); |
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%% - false - count messages (slow, according XEP-0313); |
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is_simple => maybe_enforce_simple(KVs, EnforceSimple), |
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include_groupchat => include_groupchat(KVs)}, |
| 158 |
:-( |
maybe_add_extra_lookup_params(Module, Params, IQ). |
| 159 |
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| 160 |
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-spec query_to_map(exml:element()) -> mongoose_data_forms:kv_map(). |
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query_to_map(QueryEl) -> |
| 162 |
:-( |
case mongoose_data_forms:find_form(QueryEl) of |
| 163 |
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undefined -> |
| 164 |
:-( |
#{}; |
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Form -> |
| 166 |
:-( |
#{kvs := KVs} = mongoose_data_forms:parse_form_fields(Form), |
| 167 |
:-( |
KVs |
| 168 |
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end. |
| 169 |
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| 170 |
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-spec common_lookup_params(exml:element(), non_neg_integer(), non_neg_integer()) -> |
| 171 |
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lookup_params(). |
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common_lookup_params(QueryEl, MaxResultLimit, DefaultResultLimit) -> |
| 173 |
:-( |
RSM = fix_rsm(jlib:rsm_decode(QueryEl)), |
| 174 |
:-( |
Limit = elem_to_limit(QueryEl), |
| 175 |
:-( |
#{now => erlang:system_time(microsecond), |
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rsm => RSM, |
| 177 |
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max_result_limit => MaxResultLimit, |
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page_size => min(MaxResultLimit, |
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mod_mam_utils:maybe_integer(Limit, DefaultResultLimit)), |
| 180 |
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limit_passed => Limit =/= <<>>, |
| 181 |
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ordering_direction => ordering_direction(RSM), |
| 182 |
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flip_page => mod_mam_utils:should_page_be_flipped(QueryEl)}. |
| 183 |
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| 184 |
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-spec lookup_params_with_archive_details(lookup_params(), term(), jid:jid(), jid:jid()) -> |
| 185 |
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lookup_params(). |
| 186 |
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lookup_params_with_archive_details(Params, ArcID, ArcJID, CallerJID) -> |
| 187 |
:-( |
Params#{archive_id => ArcID, |
| 188 |
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owner_jid => ArcJID, |
| 189 |
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caller_jid => CallerJID}. |
| 190 |
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| 191 |
:-( |
ordering_direction(#rsm_in{direction = before}) -> backward; |
| 192 |
:-( |
ordering_direction(_) -> forward. |
| 193 |
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| 194 |
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maybe_add_extra_lookup_params(undefined, Params, _) -> |
| 195 |
:-( |
Params; |
| 196 |
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maybe_add_extra_lookup_params(Module, Params, IQ) -> |
| 197 |
:-( |
Module:extra_lookup_params(IQ, Params). |
| 198 |
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| 199 |
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maybe_enforce_simple(_, true) -> |
| 200 |
:-( |
true; |
| 201 |
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maybe_enforce_simple(KVs, _) -> |
| 202 |
:-( |
mod_mam_utils:form_decode_optimizations(KVs). |
| 203 |
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| 204 |
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include_groupchat(#{<<"include-groupchat">> := [<<"false">>]}) -> |
| 205 |
:-( |
false; |
| 206 |
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include_groupchat(_) -> |
| 207 |
:-( |
undefined. |