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construct/modules/client/register.cc

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// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
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using namespace ircd;
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mapi::header
IRCD_MODULE
{
"Client 3.4.1 :Register"
};
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namespace { namespace name
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{
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constexpr const auto username {"username"};
constexpr const auto bind_email {"bind_email"};
constexpr const auto password {"password"};
constexpr const auto auth {"auth"};
constexpr const auto device_id {"device_id"};
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}}
struct body
:json::tuple
<
json::property<name::username, string_view>,
json::property<name::bind_email, bool>,
json::property<name::password, string_view>,
json::property<name::auth, json::object>,
json::property<name::device_id, string_view>
>
{
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using super_type::tuple;
};
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static void validate_user_id(const m::id::user &user_id);
static void validate_password(const string_view &password);
resource::response
post__register_user(client &client,
const resource::request::object<body> &request)
try
{
// 3.3.1 Additional authentication information for the user-interactive authentication API.
const json::object &auth
{
json::get<"auth"_>(request)
};
// 3.3.1 The login type that the client is attempting to complete.
const string_view &type
{
!empty(auth)? unquote(auth.at("type")) : string_view{}
};
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// We only support this for now, for some reason. TODO: XXX
if(type && type != "m.login.dummy")
throw m::UNSUPPORTED
{
"Registration '%s' not supported.", type
};
// 3.3.1 The local part of the desired Matrix ID. If omitted, the homeserver MUST
// generate a Matrix ID local part.
const auto &username
{
unquote(json::get<"username"_>(request))
};
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// Generate canonical mxid. The home_server is appended if one is not
// specified. We do not generate a user_id here if the local part is not
// specified. TODO: isn't that guest reg?
const m::id::user::buf user_id
{
username, my_host()
};
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// Check if the the user_id is acceptably formed for this server or throws
validate_user_id(user_id);
// 3.3.1 Required. The desired password for the account.
const auto &password
{
unquote(at<"password"_>(request))
};
// (r0.3.0) 3.4.1 ID of the client device. If this does not correspond to a
// known client device, a new device will be created. The server will auto-
// generate a device_id if this is not specified.
const auto requested_device_id
{
unquote(json::get<"device_id"_>(request))
};
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const auto device_id
{
requested_device_id?
m::id::device::buf{requested_device_id, my_host()}:
m::id::device::buf{m::id::generate, my_host()}
};
// 3.3.1 If true, the server binds the email used for authentication to the
// Matrix ID with the ID Server. Defaults to false.
const auto &bind_email
{
get<"bind_email"_>(request, false)
};
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// Check if the password is acceptable for this server or throws
validate_password(password);
// Represent the user
m::user user
{
user_id
};
// Activate the account. Underneath this will create a special room
// for this user in the form of !@user:host and set a key in !users:host
// If the user_id is taken this throws 409 Conflict because those assets
// will already exist; otherwise the user is registered after this call.
user.activate(
{
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{ "bind_email", bind_email },
});
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// Set the password for the account. This issues an ircd.password state
// event to the user's room. User will be able to login with
// m.login.password
user.password(password);
char access_token_buf[32];
const string_view access_token
{
m::user::gen_access_token(access_token_buf)
};
// Log the user in by issuing an event in the tokens room containing
// the generated token. When this call completes without throwing the
// access_token will be committed and the user will be logged in.
m::send(m::user::tokens, user_id, "ircd.access_token", access_token,
{
{ "ip", string(remote(client)) },
{ "device", device_id },
});
// Send response to user
return resource::response
{
client, http::CREATED,
{
{ "user_id", user_id },
{ "home_server", my_host() },
{ "access_token", access_token },
{ "device_id", device_id },
}
};
}
catch(const m::INVALID_MXID &e)
{
throw m::error
{
http::BAD_REQUEST, "M_INVALID_USERNAME",
"Not a valid username. Please try again."
};
};
resource::response
post__register_guest(client &client,
const resource::request::object<body> &request)
{
throw m::error
{
http::FORBIDDEN, "M_GUEST_DISABLED",
"Guest access is disabled"
};
const m::id::user::buf user_id
{
m::generate, my_host()
};
char access_token_buf[32];
const string_view access_token
{
m::user::gen_access_token(access_token_buf)
};
return resource::response
{
client, http::CREATED,
{
{ "user_id", user_id },
{ "home_server", my_host() },
{ "access_token", access_token },
}
};
}
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resource::response
post__register(client &client,
const resource::request::object<body> &request)
{
const auto kind
{
request.query["kind"]
};
if(kind == "guest")
return post__register_guest(client, request);
if(kind.empty() || kind == "user")
return post__register_user(client, request);
throw m::UNSUPPORTED
{
"Unknown 'kind' of registration specified in query."
};
}
resource
register_resource
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{
"/_matrix/client/r0/register",
{
"(3.3.1) Register for an account on this homeserver."
}
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};
resource::method
method_post
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{
register_resource, "POST", post__register
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};
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void
validate_user_id(const m::id::user &user_id)
{
if(user_id.host() != my_host())
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throw m::error
{
http::BAD_REQUEST,
"M_INVALID_USERNAME",
"Can only register with host '%s'",
my_host()
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};
}
void
validate_password(const string_view &password)
{
if(password.size() > 255)
throw m::error
{
http::BAD_REQUEST,
"M_INVALID_PASSWORD",
"The desired password is too long"
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};
}