mirror of
https://github.com/matrix-construct/construct
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modules/federation: Merge invite and invite2 units. modules/federation: Redact send_join and rooms legacy resources.
172 lines
3.4 KiB
C++
172 lines
3.4 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#include "media.h"
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using namespace ircd;
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m::resource
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download_resource
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{
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"/_matrix/media/r0/download/",
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{
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"(11.7.1.2) download",
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resource::DIRECTORY,
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}
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};
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static m::resource::response
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get__download_local(client &client,
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const m::resource::request &request,
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const string_view &server,
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const string_view &file,
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const m::room &room);
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static m::resource::response
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get__download(client &client,
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const m::resource::request &request)
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{
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if(request.parv.size() < 2)
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throw http::error
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{
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http::MULTIPLE_CHOICES, "/ download / domain / file"
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};
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const auto &server
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{
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request.parv[0]
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};
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const auto &file
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{
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request.parv[1]
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};
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// Download doesn't require auth so if there is no user_id detected
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// then we download on behalf of @ircd.
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const m::user::id &user_id
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{
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request.user_id?
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m::user::id{request.user_id}:
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m::me()
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};
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const bool allow_remote
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{
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request.query.get<bool>("allow_remote", true)
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};
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const m::room::id::buf room_id
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{
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m::media::file::download({server, file}, user_id)
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};
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return get__download_local(client, request, server, file, room_id);
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}
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static m::resource::response
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get__download_local(client &client,
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const m::resource::request &request,
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const string_view &server,
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const string_view &file,
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const m::room &room)
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{
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static const m::event::fetch::opts fopts
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{
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m::event::keys::include {"content"}
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};
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const m::room::state state
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{
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room, &fopts
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};
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// Get the file's total size
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size_t file_size{0};
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state.get("ircd.file.stat.size", "", [&file_size]
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(const m::event &event)
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{
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file_size = at<"content"_>(event).get<size_t>("bytes");
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});
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// Get the MIME type
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char type_buf[64];
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string_view content_type
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{
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"application/octet-stream"
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};
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state.get("ircd.file.stat.type", "", [&type_buf, &content_type]
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(const m::event &event)
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{
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const json::string &value
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{
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at<"content"_>(event).at("mime_type")
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};
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content_type =
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{
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type_buf, copy(type_buf, value)
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};
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});
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static const auto &addl_headers
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{
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"Cache-Control: public, max-age=31536000, immutable\r\n"_sv
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};
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// Send HTTP head to client
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m::resource::response
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{
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client,
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http::OK,
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content_type,
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file_size,
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addl_headers,
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};
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size_t sent{0}, read
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{
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m::media::file::read(room, [&client, &sent]
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(const string_view &block)
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{
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sent += write_all(*client.sock, block);
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})
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};
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if(unlikely(read != file_size))
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log::error
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{
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m::media::log, "File %s/%s [%s] size mismatch: expected %zu got %zu",
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server,
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file,
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string_view{room.room_id},
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file_size,
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read
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};
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// Have to kill client here after failing content length expectation.
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if(unlikely(read != file_size))
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client.close(net::dc::RST, net::close_ignore);
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return {};
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}
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static m::resource::method
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method_get
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{
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download_resource,
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"GET",
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get__download,
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{
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m::resource::method::flag(0), // flags
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45s, // timeout
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}
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};
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