%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2009-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%
%% Description:
%%% This version of the HTTP/1.1 client supports:
%%% - RFC 2616 HTTP 1.1 client part
%%% - RFC 2818 HTTP Over TLS
-module(httpc).
-behaviour(inets_service).
%% API
-export([
request/1, request/2, request/4, request/5,
cancel_request/1, cancel_request/2,
set_option/2, set_option/3,
set_options/1, set_options/2,
get_option/1, get_option/2,
get_options/1, get_options/2,
store_cookies/2, store_cookies/3,
cookie_header/1, cookie_header/2, cookie_header/3,
which_cookies/0, which_cookies/1,
reset_cookies/0, reset_cookies/1,
which_sessions/0, which_sessions/1,
stream_next/1,
default_profile/0,
profile_name/1, profile_name/2,
info/0, info/1
]).
%% Behavior callbacks
-export([start_standalone/1, start_service/1,
stop_service/1,
services/0, service_info/1]).
-include_lib("inets/src/http_lib/http_internal.hrl").
-include("httpc_internal.hrl").
-define(DEFAULT_PROFILE, default).
%%%=========================================================================
%%% API
%%%=========================================================================
default_profile() ->
?DEFAULT_PROFILE.
profile_name(?DEFAULT_PROFILE) ->
httpc_manager;
profile_name(Profile) when is_pid(Profile) ->
Profile;
profile_name(Profile) ->
Prefix = lists:flatten(io_lib:format("~w_", [?MODULE])),
profile_name(Prefix, Profile).
profile_name(Prefix, Profile) when is_atom(Profile) ->
list_to_atom(Prefix ++ atom_to_list(Profile));
profile_name(_Prefix, Profile) when is_pid(Profile) ->
Profile.
%%--------------------------------------------------------------------------
%% request(Url) -> {ok, {StatusLine, Headers, Body}} | {error,Reason}
%% request(Url Profile) ->
%% {ok, {StatusLine, Headers, Body}} | {error,Reason}
%%
%% Url - string()
%% Description: Calls request/4 with default values.
%%--------------------------------------------------------------------------
request(Url) ->
request(Url, default_profile()).
request(Url, Profile) ->
request(get, {Url, []}, [], [], Profile).
%%--------------------------------------------------------------------------
%% request(Method, Request, HTTPOptions, Options [, Profile]) ->
%% {ok, {StatusLine, Headers, Body}} | {ok, {Status, Body}} |
%% {ok, RequestId} | {error,Reason} | {ok, {saved_as, FilePath}
%%
%% Method - atom() = head | get | put | patch | post | trace |
%% options | delete
%% Request - {Url, Headers} | {Url, Headers, ContentType, Body}
%% Url - string()
%% HTTPOptions - [HttpOption]
%% HTTPOption - {timeout, Time} | {connect_timeout, Time} |
%% {ssl, SSLOptions} | {proxy_auth, {User, Password}}
%% Ssloptions = ssl_options() |
%% {ssl, ssl_options()} |
%% {essl, ssl_options()}
%% ssl_options() = [ssl_option()]
%% ssl_option() = {verify, code()} |
%% {depth, depth()} |
%% {certfile, path()} |
%% {keyfile, path()} | {password, string()} | {cacertfile, path()} |
%% {ciphers, string()}
%% Options - [Option]
%% Option - {sync, Boolean} |
%% {body_format, BodyFormat} |
%% {full_result, Boolean} |
%% {stream, To} |
%% {headers_as_is, Boolean}
%% StatusLine = {HTTPVersion, StatusCode, ReasonPhrase}</v>
%% HTTPVersion = string()
%% StatusCode = integer()
%% ReasonPhrase = string()
%% Headers = [Header]
%% Header = {Field, Value}
%% Field = string()
%% Value = string()
%% Body = string() | binary() | {fun(SendAcc) -> SendFunResult, SendAcc} |
%% {chunkify, fun(SendAcc) -> SendFunResult, SendAcc} - HTLM-code
%% SendFunResult = eof | {ok, iolist(), NewSendAcc}
%% SendAcc = NewSendAcc = term()
%%
%% Description: Sends a HTTP-request. The function can be both
%% syncronus and asynchronous in the later case the function will
%% return {ok, RequestId} and later on a message will be sent to the
%% calling process on the format {http, {RequestId, {StatusLine,
%% Headers, Body}}} or {http, {RequestId, {error, Reason}}}
%%--------------------------------------------------------------------------
request(Method, Request, HttpOptions, Options) ->
request(Method, Request, HttpOptions, Options, default_profile()).
request(Method,
{Url, Headers, ContentType, TupleBody},
HTTPOptions, Options, Profile)
when ((Method =:= post) orelse (Method =:= patch) orelse (Method =:= put) orelse (Method =:= delete))
andalso (is_atom(Profile) orelse is_pid(Profile)) andalso
is_list(ContentType) andalso is_tuple(TupleBody)->
case check_body_gen(TupleBody) of
ok ->
do_request(Method, {Url, Headers, ContentType, TupleBody}, HTTPOptions, Options, Profile);
Error ->
Error
end;
request(Method,
{Url, Headers, ContentType, Body},
HTTPOptions, Options, Profile)
when ((Method =:= post) orelse (Method =:= patch) orelse (Method =:= put) orelse (Method =:= delete))
andalso (is_atom(Profile) orelse is_pid(Profile)) andalso
is_list(ContentType) andalso (is_list(Body) orelse is_binary(Body)) ->
do_request(Method, {Url, Headers, ContentType, Body}, HTTPOptions, Options, Profile);
request(Method,
{Url, Headers},
HTTPOptions, Options, Profile)
when (Method =:= options) orelse
(Method =:= get) orelse
(Method =:= put) orelse
(Method =:= head) orelse
(Method =:= delete) orelse
(Method =:= trace) andalso
(is_atom(Profile) orelse is_pid(Profile)) ->
case uri_string:parse(uri_string:normalize(Url)) of
{error, Reason, _} ->
{error, Reason};
ParsedUrl ->
case header_parse(Headers) of
{error, Reason} ->
{error, Reason};
_ ->
handle_request(Method, Url, ParsedUrl, Headers, [], [],
HTTPOptions, Options, Profile)
end
end.
do_request(Method, {Url, Headers, ContentType, Body}, HTTPOptions, Options, Profile) ->
case uri_string:parse(uri_string:normalize(Url)) of
{error, Reason, _} ->
{error, Reason};
ParsedUrl ->
handle_request(Method, Url,
ParsedUrl, Headers, ContentType, Body,
HTTPOptions, Options, Profile)
end.
%%--------------------------------------------------------------------------
%% cancel_request(RequestId) -> ok
%% cancel_request(RequestId, Profile) -> ok
%% RequestId - As returned by request/4
%%
%% Description: Cancels a HTTP-request.
%%-------------------------------------------------------------------------
cancel_request(RequestId) ->
cancel_request(RequestId, default_profile()).
cancel_request(RequestId, Profile)
when is_atom(Profile) orelse is_pid(Profile) ->
httpc_manager:cancel_request(RequestId, profile_name(Profile)).
%%--------------------------------------------------------------------------
%% set_options(Options) -> ok | {error, Reason}
%% set_options(Options, Profile) -> ok | {error, Reason}
%% Options - [Option]
%% Profile - atom()
%% Option - {proxy, {Proxy, NoProxy}} | {max_sessions, MaxSessions} |
%% {max_pipeline_length, MaxPipeline} |
%% {pipeline_timeout, PipelineTimeout} | {cookies, CookieMode} |
%% {ipfamily, IpFamily}
%% Proxy - {Host, Port}
%% NoProxy - [Domain | HostName | IPAddress]
%% MaxSessions, MaxPipeline, PipelineTimeout = integer()
%% CookieMode - enabled | disabled | verify
%% IpFamily - inet | inet6 | inet6fb4
%% Description: Informs the httpc_manager of the new settings.
%%-------------------------------------------------------------------------
set_options(Options) ->
set_options(Options, default_profile()).
set_options(Options, Profile) when is_atom(Profile) orelse is_pid(Profile) ->
case validate_options(Options) of
{ok, Opts} ->
httpc_manager:set_options(Opts, profile_name(Profile));
{error, Reason} ->
{error, Reason}
end.
set_option(Key, Value) ->
set_option(Key, Value, default_profile()).
set_option(Key, Value, Profile) ->
set_options([{Key, Value}], Profile).
%%--------------------------------------------------------------------------
%% get_options(OptionItems) -> {ok, Values} | {error, Reason}
%% get_options(OptionItems, Profile) -> {ok, Values} | {error, Reason}
%% OptionItems - all | [option_item()]
%% option_item() - proxy | pipeline_timeout | max_pipeline_length |
%% keep_alive_timeout | max_keep_alive_length |
%% max_sessions | verbose |
%% cookies | ipfamily | ip | port | socket_opts
%% Profile - atom()
%% Values - [{option_item(), term()}]
%% Reason - term()
%% Description: Retrieves the current options.
%%-------------------------------------------------------------------------
get_options() ->
record_info(fields, options).
get_options(Options) ->
get_options(Options, default_profile()).
get_options(all = _Options, Profile) ->
get_options(get_options(), Profile);
get_options(Options, Profile)
when (is_list(Options) andalso
(is_atom(Profile) orelse is_pid(Profile))) ->
case Options -- get_options() of
[] ->
try
begin
{ok, httpc_manager:get_options(Options,
profile_name(Profile))}
end
catch
exit:{noproc, _} ->
{error, inets_not_started}
end;
InvalidGetOptions ->
{error, {invalid_options, InvalidGetOptions}}
end.
get_option(Key) ->
get_option(Key, default_profile()).
get_option(Key, Profile) ->
case get_options([Key], Profile) of
{ok, [{Key, Value}]} ->
{ok, Value};
Error ->
Error
end.
%%--------------------------------------------------------------------------
%% store_cookies(SetCookieHeaders, Url [, Profile]) -> ok | {error, reason}
%%
%%
%% Description: Store the cookies from <SetCookieHeaders>
%% in the cookie database
%% for the profile <Profile>. This function shall be used when the option
%% cookies is set to verify.
%%-------------------------------------------------------------------------
store_cookies(SetCookieHeaders, Url) ->
store_cookies(SetCookieHeaders, Url, default_profile()).
store_cookies(SetCookieHeaders, Url, Profile)
when is_atom(Profile) orelse is_pid(Profile) ->
case uri_string:parse(uri_string:normalize(Url)) of
{error, Bad, _} ->
{error, {parse_failed, Bad}};
URI ->
Scheme = scheme_to_atom(maps:get(scheme, URI, '')),
Host = maps:get(host, URI, ""),
Port = maps:get(port, URI, default_port(Scheme)),
Path = uri_string:recompose(#{path => maps:get(path, URI, "")}),
%% Since the Address part is not actually used
%% by the manager when storing cookies, we dont
%% care about ipv6-host-with-brackets.
Address = {Host, Port},
ProfileName = profile_name(Profile),
Cookies = httpc_cookie:cookies(SetCookieHeaders, Path, Host),
httpc_manager:store_cookies(Cookies, Address, ProfileName),
ok
end.
default_port(http) ->
80;
default_port(https) ->
443.
%%--------------------------------------------------------------------------
%% cookie_header(Url) -> Header | {error, Reason}
%% cookie_header(Url, Profile) -> Header | {error, Reason}
%% cookie_header(Url, Opts, Profile) -> Header | {error, Reason}
%%
%% Description: Returns the cookie header that would be sent when making
%% a request to <Url>.
%%-------------------------------------------------------------------------
cookie_header(Url) ->
cookie_header(Url, default_profile()).
cookie_header(Url, Profile) when is_atom(Profile) orelse is_pid(Profile) ->
cookie_header(Url, [], Profile);
cookie_header(Url, Opts) when is_list(Opts) ->
cookie_header(Url, Opts, default_profile()).
cookie_header(Url, Opts, Profile)
when (is_list(Opts) andalso (is_atom(Profile) orelse is_pid(Profile))) ->
try
begin
httpc_manager:which_cookies(Url, Opts, profile_name(Profile))
end
catch
exit:{noproc, _} ->
{error, {not_started, Profile}}
end.
%%--------------------------------------------------------------------------
%% which_cookies() -> [cookie()]
%% which_cookies(Profile) -> [cookie()]
%%
%% Description: Debug function, dumping the cookie database
%%-------------------------------------------------------------------------
which_cookies() ->
which_cookies(default_profile()).
which_cookies(Profile) ->
?hcrt("which cookies", [{profile, Profile}]),
try
begin
httpc_manager:which_cookies(profile_name(Profile))
end
catch
exit:{noproc, _} ->
{error, {not_started, Profile}}
end.
%%--------------------------------------------------------------------------
%% which_sessions() -> {GoodSession, BadSessions, NonSessions}
%% which_sessions(Profile) -> {GoodSession, BadSessions, NonSessions}
%%
%% Description: Debug function, dumping the sessions database, sorted
%% into three groups (Good-, Bad- and Non-sessions).
%%-------------------------------------------------------------------------
which_sessions() ->
which_sessions(default_profile()).
which_sessions(Profile) ->
try
begin
httpc_manager:which_sessions(profile_name(Profile))
end
catch
exit:{noproc, _} ->
{[], [], []}
end.
%%--------------------------------------------------------------------------
%% info() -> list()
%% info(Profile) -> list()
%%
%% Description: Debug function, retrieve info about the profile
%%-------------------------------------------------------------------------
info() ->
info(default_profile()).
info(Profile) ->
try
begin
httpc_manager:info(profile_name(Profile))
end
catch
exit:{noproc, _} ->
{error, {not_started, Profile}}
end.
%%--------------------------------------------------------------------------
%% reset_cookies() -> void()
%% reset_cookies(Profile) -> void()
%%
%% Description: Debug function, reset the cookie database
%%-------------------------------------------------------------------------
reset_cookies() ->
reset_cookies(default_profile()).
reset_cookies(Profile) ->
try
begin
httpc_manager:reset_cookies(profile_name(Profile))
end
catch
exit:{noproc, _} ->
{error, {not_started, Profile}}
end.
%%--------------------------------------------------------------------------
%% stream_next(Pid) -> Header | {error, Reason}
%%
%% Description: Triggers the next message to be streamed, e.i.
%% same behavior as active once for sockets.
%%-------------------------------------------------------------------------
stream_next(Pid) ->
httpc_handler:stream_next(Pid).
%%%========================================================================
%%% Behaviour callbacks
%%%========================================================================
start_standalone(PropList) ->
case proplists:get_value(profile, PropList) of
undefined ->
{error, no_profile};
Profile ->
Dir =
proplists:get_value(data_dir, PropList, only_session_cookies),
httpc_manager:start_link(Profile, Dir, stand_alone)
end.
start_service(Config) ->
httpc_profile_sup:start_child(Config).
stop_service(Profile) when is_atom(Profile) ->
httpc_profile_sup:stop_child(Profile);
stop_service(Pid) when is_pid(Pid) ->
case service_info(Pid) of
{ok, [{profile, Profile}]} ->
stop_service(Profile);
Error ->
Error
end.
services() ->
[{httpc, Pid} || {_, Pid, _, _} <-
supervisor:which_children(httpc_profile_sup)].
service_info(Pid) ->
try [{ChildName, ChildPid} ||
{ChildName, ChildPid, _, _} <-
supervisor:which_children(httpc_profile_sup)] of
Children ->
child_name2info(child_name(Pid, Children))
catch
exit:{noproc, _} ->
{error, service_not_available}
end.
%%%========================================================================
%%% Internal functions
%%%========================================================================
handle_request(Method, Url,
URI,
Headers0, ContentType, Body0,
HTTPOptions0, Options0, Profile) ->
Started = http_util:timestamp(),
NewHeaders0 = [{http_util:to_lower(Key), Val} || {Key, Val} <- Headers0],
try
begin
{NewHeaders, Body} =
case Body0 of
{chunkify, ProcessBody, Acc}
when is_function(ProcessBody, 1) ->
NewHeaders1 = ensure_chunked_encoding(NewHeaders0),
Body1 = {mk_chunkify_fun(ProcessBody), Acc},
{NewHeaders1, Body1};
{ProcessBody, _}
when is_function(ProcessBody, 1) ->
{NewHeaders0, Body0};
_ when is_list(Body0) orelse is_binary(Body0) ->
{NewHeaders0, Body0};
_ ->
throw({error, {bad_body, Body0}})
end,
HTTPOptions = http_options(HTTPOptions0),
Options = request_options(Options0),
Sync = proplists:get_value(sync, Options),
Stream = proplists:get_value(stream, Options),
Receiver = proplists:get_value(receiver, Options),
SocketOpts = proplists:get_value(socket_opts, Options),
UnixSocket = proplists:get_value(unix_socket, Options),
BracketedHost = proplists:get_value(ipv6_host_with_brackets,
Options),
Scheme = scheme_to_atom(maps:get(scheme, URI, '')),
Userinfo = maps:get(userinfo, URI, ""),
Host = http_util:maybe_add_brackets(maps:get(host, URI, ""), BracketedHost),
Port = maps:get(port, URI, default_port(Scheme)),
Host2 = http_request:normalize_host(Scheme, Host, Port),
Path = uri_string:recompose(#{path => maps:get(path, URI, "")}),
Query = add_question_mark(maps:get(query, URI, "")),
HeadersRecord = header_record(NewHeaders, Host2, HTTPOptions),
Request = #request{from = Receiver,
scheme = Scheme,
address = {Host, Port},
path = Path,
pquery = Query,
method = Method,
headers = HeadersRecord,
content = {ContentType, Body},
settings = HTTPOptions,
abs_uri = Url,
userinfo = Userinfo,
stream = Stream,
headers_as_is = headers_as_is(Headers0, Options),
socket_opts = SocketOpts,
started = Started,
unix_socket = UnixSocket,
ipv6_host_with_brackets = BracketedHost},
case httpc_manager:request(Request, profile_name(Profile)) of
{ok, RequestId} ->
handle_answer(RequestId, Sync, Options);
{error, Reason} ->
{error, Reason}
end
end
catch
error:{noproc, _} ->
{error, {not_started, Profile}};
throw:Error ->
Error
end.
add_question_mark(<<>>) ->
<<>>;
add_question_mark([]) ->
[];
add_question_mark(Comp) when is_binary(Comp) ->
<<$?, Comp/binary>>;
add_question_mark(Comp) when is_list(Comp) ->
[$?|Comp].
scheme_to_atom("http") ->
http;
scheme_to_atom("https") ->
https;
scheme_to_atom('') ->
'';
scheme_to_atom(Scheme) ->
throw({error, {bad_scheme, Scheme}}).
ensure_chunked_encoding(Hdrs) ->
Key = "transfer-encoding",
lists:keystore(Key, 1, Hdrs, {Key, "chunked"}).
mk_chunkify_fun(ProcessBody) ->
fun(eof_body) ->
eof;
(Acc) ->
case ProcessBody(Acc) of
eof ->
{ok, <<"0\r\n\r\n">>, eof_body};
{ok, Data, NewAcc} ->
Chunk = [
integer_to_list(iolist_size(Data), 16),
"\r\n",
Data,
"\r\n"],
{ok, Chunk, NewAcc}
end
end.
handle_answer(RequestId, false, _) ->
{ok, RequestId};
handle_answer(RequestId, true, Options) ->
receive
{http, {RequestId, saved_to_file}} ->
{ok, saved_to_file};
{http, {RequestId, {_,_,_} = Result}} ->
return_answer(Options, Result);
{http, {RequestId, {error, Reason}}} ->
{error, Reason}
end.
return_answer(Options, {{"HTTP/0.9",_,_}, _, BinBody}) ->
Body = maybe_format_body(BinBody, Options),
{ok, Body};
return_answer(Options, {StatusLine, Headers, BinBody}) ->
Body = maybe_format_body(BinBody, Options),
case proplists:get_value(full_result, Options, true) of
true ->
{ok, {StatusLine, Headers, Body}};
false ->
{_, Status, _} = StatusLine,
{ok, {Status, Body}}
end.
maybe_format_body(BinBody, Options) ->
case proplists:get_value(body_format, Options, string) of
string ->
binary_to_list(BinBody);
_ ->
BinBody
end.
%% This options is a workaround for http servers that do not follow the
%% http standard and have case sensative header parsing. Should only be
%% used if there is no other way to communicate with the server or for
%% testing purpose.
headers_as_is(Headers, Options) ->
case proplists:get_value(headers_as_is, Options, false) of
false ->
[];
true ->
Headers
end.
http_options(HttpOptions) ->
HttpOptionsDefault = http_options_default(),
http_options(HttpOptionsDefault, HttpOptions, #http_options{}).
http_options([], [], Acc) ->
Acc;
http_options([], HttpOptions, Acc) ->
Fun = fun(BadOption) ->
Report = io_lib:format("Invalid option ~p ignored ~n",
[BadOption]),
error_logger:info_report(Report)
end,
lists:foreach(Fun, HttpOptions),
Acc;
http_options([{Tag, Default, Idx, Post} | Defaults], HttpOptions, Acc) ->
case lists:keysearch(Tag, 1, HttpOptions) of
{value, {Tag, Val0}} ->
case Post(Val0) of
{ok, Val} ->
Acc2 = setelement(Idx, Acc, Val),
HttpOptions2 = lists:keydelete(Tag, 1, HttpOptions),
http_options(Defaults, HttpOptions2, Acc2);
error ->
Report = io_lib:format("Invalid option ~p:~p ignored ~n",
[Tag, Val0]),
error_logger:info_report(Report),
HttpOptions2 = lists:keydelete(Tag, 1, HttpOptions),
http_options(Defaults, HttpOptions2, Acc)
end;
false ->
DefaultVal =
case Default of
{value, Val} ->
Val;
{field, DefaultIdx} ->
element(DefaultIdx, Acc)
end,
Acc2 = setelement(Idx, Acc, DefaultVal),
http_options(Defaults, HttpOptions, Acc2)
end.
http_options_default() ->
VersionPost =
fun(Value) when is_atom(Value) ->
{ok, http_util:to_upper(atom_to_list(Value))};
(Value) when is_list(Value) ->
{ok, http_util:to_upper(Value)};
(_) ->
error
end,
TimeoutPost = fun(Value) when is_integer(Value) andalso (Value >= 0) ->
{ok, Value};
(infinity = Value) ->
{ok, Value};
(_) ->
error
end,
AutoRedirectPost = boolfun(),
SslPost = fun(Value) when is_list(Value) ->
{ok, {?HTTP_DEFAULT_SSL_KIND, Value}};
({ssl, SslOptions}) when is_list(SslOptions) ->
{ok, {?HTTP_DEFAULT_SSL_KIND, SslOptions}};
({essl, SslOptions}) when is_list(SslOptions) ->
{ok, {essl, SslOptions}};
(_) ->
error
end,
ProxyAuthPost = fun({User, Passwd} = Value) when is_list(User) andalso
is_list(Passwd) ->
{ok, Value};
(_) ->
error
end,
RelaxedPost = boolfun(),
ConnTimeoutPost =
fun(Value) when is_integer(Value) andalso (Value >= 0) ->
{ok, Value};
(infinity = Value) ->
{ok, Value};
(_) ->
error
end,
UrlDecodePost = boolfun(),
[
{version, {value, "HTTP/1.1"}, #http_options.version, VersionPost},
{timeout, {value, ?HTTP_REQUEST_TIMEOUT}, #http_options.timeout, TimeoutPost},
{autoredirect, {value, true}, #http_options.autoredirect, AutoRedirectPost},
{ssl, {value, {?HTTP_DEFAULT_SSL_KIND, []}}, #http_options.ssl, SslPost},
{proxy_auth, {value, undefined}, #http_options.proxy_auth, ProxyAuthPost},
{relaxed, {value, false}, #http_options.relaxed, RelaxedPost},
{url_encode, {value, false}, #http_options.url_encode, UrlDecodePost},
%% this field has to be *after* the timeout option (as that field is used for the default value)
{connect_timeout, {field, #http_options.timeout}, #http_options.connect_timeout, ConnTimeoutPost}
].
boolfun() ->
fun(Value) when (Value =:= true) orelse
(Value =:= false) ->
{ok, Value};
(_) ->
error
end.
request_options_defaults() ->
VerifyBoolean = boolfun(),
VerifySync = VerifyBoolean,
VerifyStream =
fun(none = _Value) ->
ok;
(self = _Value) ->
ok;
({self, once} = _Value) ->
ok;
(Value) when is_list(Value) ->
ok;
(_) ->
error
end,
VerifyBodyFormat =
fun(string = _Value) ->
ok;
(binary = _Value) ->
ok;
(_) ->
error
end,
VerifyFullResult = VerifyBoolean,
VerifyHeaderAsIs = VerifyBoolean,
VerifyReceiver =
fun(Value) when is_pid(Value) ->
ok;
({M, F, A}) when (is_atom(M) andalso
is_atom(F) andalso
is_list(A)) ->
ok;
(Value) when is_function(Value, 1) ->
ok;
(_) ->
error
end,
VerifySocketOpts =
fun([]) ->
{ok, undefined};
(Value) when is_list(Value) ->
ok;
(_) ->
error
end,
VerifyBrackets = VerifyBoolean,
[
{sync, true, VerifySync},
{stream, none, VerifyStream},
{body_format, string, VerifyBodyFormat},
{full_result, true, VerifyFullResult},
{headers_as_is, false, VerifyHeaderAsIs},
{receiver, self(), VerifyReceiver},
{socket_opts, undefined, VerifySocketOpts},
{ipv6_host_with_brackets, false, VerifyBrackets}
].
request_options(Options) ->
Defaults = request_options_defaults(),
request_options(Defaults, Options, []).
request_options([], [], Acc) ->
request_options_sanity_check(Acc),
lists:reverse(Acc);
request_options([], Options, Acc) ->
Fun = fun(BadOption) ->
Report = io_lib:format("Invalid option ~p ignored ~n",
[BadOption]),
error_logger:info_report(Report)
end,
lists:foreach(Fun, Options),
Acc;
request_options([{Key, DefaultVal, Verify} | Defaults], Options, Acc) ->
case lists:keysearch(Key, 1, Options) of
{value, {Key, Value}} ->
case Verify(Value) of
ok ->
Options2 = lists:keydelete(Key, 1, Options),
request_options(Defaults, Options2, [{Key, Value} | Acc]);
{ok, Value2} ->
Options2 = lists:keydelete(Key, 1, Options),
request_options(Defaults, Options2, [{Key, Value2} | Acc]);
error ->
Report = io_lib:format("Invalid option ~p:~p ignored ~n",
[Key, Value]),
error_logger:info_report(Report),
Options2 = lists:keydelete(Key, 1, Options),
request_options(Defaults, Options2, Acc)
end;
false ->
request_options(Defaults, Options, [{Key, DefaultVal} | Acc])
end.
request_options_sanity_check(Opts) ->
case proplists:get_value(sync, Opts) of
Sync when (Sync =:= true) ->
case proplists:get_value(receiver, Opts) of
Pid when is_pid(Pid) andalso (Pid =:= self()) ->
ok;
BadReceiver ->
throw({error, {bad_options_combo,
[{sync, true}, {receiver, BadReceiver}]}})
end,
case proplists:get_value(stream, Opts) of
Stream when (Stream =:= self) orelse
(Stream =:= {self, once}) ->
throw({error, streaming_error});
_ ->
ok
end;
_ ->
ok
end,
ok.
validate_ipfamily_unix_socket(Options0) ->
IpFamily = proplists:get_value(ipfamily, Options0, inet),
UnixSocket = proplists:get_value(unix_socket, Options0, undefined),
Options1 = proplists:delete(ipfamily, Options0),
Options2 = proplists:delete(ipfamily, Options1),
validate_ipfamily_unix_socket(IpFamily, UnixSocket, Options2,
[{ipfamily, IpFamily}, {unix_socket, UnixSocket}]).
%%
validate_ipfamily_unix_socket(local, undefined, _Options, _Acc) ->
bad_option(unix_socket, undefined);
validate_ipfamily_unix_socket(IpFamily, UnixSocket, _Options, _Acc)
when IpFamily =/= local, UnixSocket =/= undefined ->
bad_option(ipfamily, IpFamily);
validate_ipfamily_unix_socket(IpFamily, UnixSocket, Options, Acc) ->
validate_ipfamily(IpFamily),
validate_unix_socket(UnixSocket),
{Options, Acc}.
validate_options(Options0) ->
try
{Options, Acc} = validate_ipfamily_unix_socket(Options0),
validate_options(Options, Acc)
catch
error:Reason ->
{error, Reason}
end.
%%
validate_options([], ValidOptions) ->
{ok, lists:reverse(ValidOptions)};
validate_options([{proxy, Proxy} = Opt| Tail], Acc) ->
validate_proxy(Proxy),
validate_options(Tail, [Opt | Acc]);
validate_options([{https_proxy, Proxy} = Opt| Tail], Acc) ->
validate_https_proxy(Proxy),
validate_options(Tail, [Opt | Acc]);
validate_options([{max_sessions, Value} = Opt| Tail], Acc) ->
validate_max_sessions(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{keep_alive_timeout, Value} = Opt| Tail], Acc) ->
validate_keep_alive_timeout(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{max_keep_alive_length, Value} = Opt| Tail], Acc) ->
validate_max_keep_alive_length(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{pipeline_timeout, Value} = Opt| Tail], Acc) ->
validate_pipeline_timeout(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{max_pipeline_length, Value} = Opt| Tail], Acc) ->
validate_max_pipeline_length(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{cookies, Value} = Opt| Tail], Acc) ->
validate_cookies(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{ipfamily, Value} = Opt| Tail], Acc) ->
validate_ipfamily(Value),
validate_options(Tail, [Opt | Acc]);
%% For backward compatibillity
validate_options([{ipv6, Value}| Tail], Acc) ->
NewValue = validate_ipv6(Value),
Opt = {ipfamily, NewValue},
validate_options(Tail, [Opt | Acc]);
validate_options([{ip, Value} = Opt| Tail], Acc) ->
validate_ip(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{port, Value} = Opt| Tail], Acc) ->
validate_port(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{socket_opts, Value} = Opt| Tail], Acc) ->
validate_socket_opts(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{verbose, Value} = Opt| Tail], Acc) ->
validate_verbose(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{unix_socket, Value} = Opt| Tail], Acc) ->
validate_unix_socket(Value),
validate_options(Tail, [Opt | Acc]);
validate_options([{_, _} = Opt| _], _Acc) ->
{error, {not_an_option, Opt}}.
validate_proxy({{ProxyHost, ProxyPort}, NoProxy} = Proxy)
when is_list(ProxyHost) andalso
is_integer(ProxyPort) andalso
is_list(NoProxy) ->
Proxy;
validate_proxy(BadProxy) ->
bad_option(proxy, BadProxy).
validate_https_proxy({{ProxyHost, ProxyPort}, NoProxy} = Proxy)
when is_list(ProxyHost) andalso
is_integer(ProxyPort) andalso
is_list(NoProxy) ->
Proxy;
validate_https_proxy(BadProxy) ->
bad_option(https_proxy, BadProxy).
validate_max_sessions(Value) when is_integer(Value) andalso (Value >= 0) ->
Value;
validate_max_sessions(BadValue) ->
bad_option(max_sessions, BadValue).
validate_keep_alive_timeout(Value) when is_integer(Value) andalso (Value >= 0) ->
Value;
validate_keep_alive_timeout(infinity = Value) ->
Value;
validate_keep_alive_timeout(BadValue) ->
bad_option(keep_alive_timeout, BadValue).
validate_max_keep_alive_length(Value) when is_integer(Value) andalso (Value >= 0) ->
Value;
validate_max_keep_alive_length(BadValue) ->
bad_option(max_keep_alive_length, BadValue).
validate_pipeline_timeout(Value) when is_integer(Value) ->
Value;
validate_pipeline_timeout(infinity = Value) ->
Value;
validate_pipeline_timeout(BadValue) ->
bad_option(pipeline_timeout, BadValue).
validate_max_pipeline_length(Value) when is_integer(Value) ->
Value;
validate_max_pipeline_length(BadValue) ->
bad_option(max_pipeline_length, BadValue).
validate_cookies(Value)
when ((Value =:= enabled) orelse
(Value =:= disabled) orelse
(Value =:= verify)) ->
Value;
validate_cookies(BadValue) ->
bad_option(cookies, BadValue).
validate_ipv6(Value) when (Value =:= enabled) orelse (Value =:= disabled) ->
case Value of
enabled ->
inet6fb4;
disabled ->
inet
end;
validate_ipv6(BadValue) ->
bad_option(ipv6, BadValue).
validate_ipfamily(Value)
when (Value =:= inet) orelse (Value =:= inet6) orelse
(Value =:= inet6fb4) orelse (Value =:= local) ->
Value;
validate_ipfamily(BadValue) ->
bad_option(ipfamily, BadValue).
validate_ip(Value)
when is_tuple(Value) andalso ((size(Value) =:= 4) orelse (size(Value) =:= 8)) ->
Value;
validate_ip(BadValue) ->
bad_option(ip, BadValue).
validate_port(Value) when is_integer(Value) ->
Value;
validate_port(BadValue) ->
bad_option(port, BadValue).
validate_socket_opts(Value) when is_list(Value) ->
Value;
validate_socket_opts(BadValue) ->
bad_option(socket_opts, BadValue).
validate_verbose(Value)
when ((Value =:= false) orelse
(Value =:= verbose) orelse
(Value =:= debug) orelse
(Value =:= trace)) ->
ok;
validate_verbose(BadValue) ->
bad_option(verbose, BadValue).
validate_unix_socket(Value)
when (Value =:= undefined) ->
Value;
validate_unix_socket(Value)
when is_list(Value) andalso length(Value) > 0 ->
Value;
validate_unix_socket(BadValue) ->
bad_option(unix_socket, BadValue).
bad_option(Option, BadValue) ->
throw({error, {bad_option, Option, BadValue}}).
header_record(NewHeaders, Host, #http_options{version = Version}) ->
header_record(NewHeaders, #http_request_h{}, Host, Version).
header_record([], RequestHeaders, Host, Version) ->
validate_headers(RequestHeaders, Host, Version);
header_record([{"cache-control", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'cache-control' = Val},
Host, Version);
header_record([{"connection", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{connection = Val}, Host,
Version);
header_record([{"date", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{date = Val}, Host,
Version);
header_record([{"pragma", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{pragma = Val}, Host,
Version);
header_record([{"trailer", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{trailer = Val}, Host,
Version);
header_record([{"transfer-encoding", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest,
RequestHeaders#http_request_h{'transfer-encoding' = Val},
Host, Version);
header_record([{"upgrade", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{upgrade = Val}, Host,
Version);
header_record([{"via", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{via = Val}, Host,
Version);
header_record([{"warning", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{warning = Val}, Host,
Version);
header_record([{"accept", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{accept = Val}, Host,
Version);
header_record([{"accept-charset", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'accept-charset' = Val},
Host, Version);
header_record([{"accept-encoding", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest, RequestHeaders#http_request_h{'accept-encoding' = Val},
Host, Version);
header_record([{"accept-language", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest, RequestHeaders#http_request_h{'accept-language' = Val},
Host, Version);
header_record([{"authorization", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{authorization = Val},
Host, Version);
header_record([{"expect", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{expect = Val}, Host,
Version);
header_record([{"from", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{from = Val}, Host,
Version);
header_record([{"host", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{host = Val}, Host,
Version);
header_record([{"if-match", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'if-match' = Val},
Host, Version);
header_record([{"if-modified-since", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest,
RequestHeaders#http_request_h{'if-modified-since' = Val},
Host, Version);
header_record([{"if-none-match", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'if-none-match' = Val},
Host, Version);
header_record([{"if-range", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'if-range' = Val},
Host, Version);
header_record([{"if-unmodified-since", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest, RequestHeaders#http_request_h{'if-unmodified-since'
= Val}, Host, Version);
header_record([{"max-forwards", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'max-forwards' = Val},
Host, Version);
header_record([{"proxy-authorization", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest, RequestHeaders#http_request_h{'proxy-authorization'
= Val}, Host, Version);
header_record([{"range", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{range = Val}, Host,
Version);
header_record([{"referer", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{referer = Val}, Host,
Version);
header_record([{"te", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{te = Val}, Host,
Version);
header_record([{"user-agent", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'user-agent' = Val},
Host, Version);
header_record([{"allow", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{allow = Val}, Host,
Version);
header_record([{"content-encoding", Val} | Rest], RequestHeaders, Host,
Version) ->
header_record(Rest,
RequestHeaders#http_request_h{'content-encoding' = Val},
Host, Version);
header_record([{"content-language", Val} | Rest], RequestHeaders,
Host, Version) ->
header_record(Rest,
RequestHeaders#http_request_h{'content-language' = Val},
Host, Version);
header_record([{"content-length", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'content-length' = Val},
Host, Version);
header_record([{"content-location", Val} | Rest], RequestHeaders,
Host, Version) ->
header_record(Rest,
RequestHeaders#http_request_h{'content-location' = Val},
Host, Version);
header_record([{"content-md5", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'content-md5' = Val},
Host, Version);
header_record([{"content-range", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'content-range' = Val},
Host, Version);
header_record([{"content-type", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'content-type' = Val},
Host, Version);
header_record([{"expires", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{expires = Val}, Host,
Version);
header_record([{"last-modified", Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{'last-modified' = Val},
Host, Version);
header_record([{Key, Val} | Rest], RequestHeaders, Host, Version) ->
header_record(Rest, RequestHeaders#http_request_h{
other = [{Key, Val} |
RequestHeaders#http_request_h.other]},
Host, Version).
validate_headers(RequestHeaders = #http_request_h{te = undefined}, Host,
"HTTP/1.1" = Version) ->
validate_headers(RequestHeaders#http_request_h{te = ""}, Host,
"HTTP/1.1" = Version);
validate_headers(RequestHeaders = #http_request_h{host = undefined},
Host, "HTTP/1.1" = Version) ->
validate_headers(RequestHeaders#http_request_h{host = Host}, Host, Version);
validate_headers(RequestHeaders, _, _) ->
RequestHeaders.
%%--------------------------------------------------------------------------
%% These functions is just simple wrappers to parse specifically HTTP URIs
%%--------------------------------------------------------------------------
header_parse([]) ->
ok;
header_parse([{Field, Value}|T]) when is_list(Field), is_list(Value) ->
header_parse(T);
header_parse(_) ->
{error, {headers_error, not_strings}}.
child_name2info(undefined) ->
{error, no_such_service};
child_name2info(httpc_manager) ->
{ok, [{profile, default}]};
child_name2info({httpc, Profile}) ->
{ok, [{profile, Profile}]}.
child_name(_, []) ->
undefined;
child_name(Pid, [{Name, Pid} | _]) ->
Name;
child_name(Pid, [_ | Children]) ->
child_name(Pid, Children).
check_body_gen({Fun, _}) when is_function(Fun) ->
ok;
check_body_gen({chunkify, Fun, _}) when is_function(Fun) ->
ok;
check_body_gen(Gen) ->
{error, {bad_body_generator, Gen}}.
