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hackney
1.5.0
4.7.2
4.7.1
4.7.0
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4.5.1
4.5.0
4.4.5
4.4.3
4.4.2
4.4.1
4.4.0
4.3.0
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4.2.2
4.2.1
4.2.0
4.1.0
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4.0.1
4.0.0
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3.2.0
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3.1.1
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3.0.1
3.0.0
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2.0.0
2.0.0-beta.1
1.25.0
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1.14.3
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1.14.0
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1.7.0
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retired
1.6.5
1.6.4
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1.6.2
1.6.1
1.6.0
1.5.7
1.5.6
1.5.5
1.5.4
1.5.3
1.5.2
1.5.1
1.5.0
1.4.10
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1.0.2
1.0.1
0.15.2
0.15.0
0.14.3
0.14.2
0.14.1
0.14.0
0.13.1
Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support
Security advisory:
This version has known vulnerabilities.
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Files
src/hackney_util.erl
%%% -*- erlang -*-
%%%
%%% This file is part of hackney released under the Apache 2 license.
%%% See the NOTICE for more information.
%%%
-module(hackney_util).
-export([filter_options/3]).
-export([set_option_default/3]).
-export([require/1]).
-export([maybe_apply_defaults/2]).
-export([is_ipv6/1]).
-export([privdir/0]).
-export([mod_metrics/0]).
-export([to_atom/1]).
-include("hackney.hrl").
%% @doc filter a proplists and only keep allowed keys
-spec filter_options([{atom(), any()} | {raw, any(), any(), any()}],
[atom()], Acc) -> Acc when Acc :: [any()].
filter_options([], _, Acc) ->
Acc;
filter_options([Opt = {Key, _}|Tail], AllowedKeys, Acc) ->
case lists:member(Key, AllowedKeys) of
true -> filter_options(Tail, AllowedKeys, [Opt|Acc]);
false -> filter_options(Tail, AllowedKeys, Acc)
end;
filter_options([Opt = {raw, _, _, _}|Tail], AllowedKeys, Acc) ->
case lists:member(raw, AllowedKeys) of
true -> filter_options(Tail, AllowedKeys, [Opt|Acc]);
false -> filter_options(Tail, AllowedKeys, Acc)
end;
filter_options([Opt|Tail], AllowedKeys, Acc) when is_atom(Opt) ->
case lists:member(Opt, AllowedKeys) of
true -> filter_options(Tail, AllowedKeys, [Opt|Acc]);
false -> filter_options(Tail, AllowedKeys, Acc)
end.
%% @doc set the default options in a proplists if not defined
-spec set_option_default(Opts, atom(), any())
-> Opts when Opts :: [{atom(), any()}].
set_option_default(Opts, Key, Value) ->
case lists:keymember(Key, 1, Opts) of
true -> Opts;
false -> [{Key, Value}|Opts]
end.
%% @doc Start the given applications if they were not already started.
-spec require(list(module())) -> ok.
require([]) ->
ok;
require([App|Rest]) ->
case application:start(App) of
ok -> ok;
{error, {already_started, App}} -> ok
end,
require(Rest).
maybe_apply_defaults([], Options) ->
Options;
maybe_apply_defaults([OptName | Rest], Options) ->
case proplists:is_defined(OptName, Options) of
true ->
maybe_apply_defaults(Rest, Options);
false ->
{ok, Default} = application:get_env(hackney, OptName),
maybe_apply_defaults(Rest, [{OptName, Default} | Options])
end.
is_ipv6(Host) ->
case inet_parse:address(Host) of
{ok, {_, _, _, _, _, _, _, _}} ->
true;
{ok, {_, _, _, _}} ->
false;
_ ->
case inet:getaddr(Host, inet) of
{ok, _} ->
false;
_ ->
case inet:getaddr(Host, inet6) of
{ok, _} ->
true;
_ ->
false
end
end
end.
privdir() ->
case code:priv_dir(hackney) of
{error, _} ->
%% try to get relative priv dir. useful for tests.
EbinDir = filename:dirname(code:which(?MODULE)),
AppPath = filename:dirname(EbinDir),
filename:join(AppPath, "priv");
Dir -> Dir
end.
mod_metrics() ->
case application:get_env(hackney, mod_metrics) of
{ok, folsom} -> metrics_folsom;
{ok, exometer} -> metrics_exometers;
{ok, dummy} -> metrics_dumy;
{ok, Mod} -> Mod;
_ -> metrics_dummy
end.
to_atom(V) when is_list(V) ->
try
list_to_existing_atom(V)
catch
_:_ -> list_to_atom(V)
end;
to_atom(V) when is_binary(V) ->
to_atom(binary_to_list(V));
to_atom(V) when is_atom(V) ->
V.