mirror of
https://github.com/matrix-construct/construct
synced 2024-08-19 08:04:43 +02:00
154 lines
3.1 KiB
C++
154 lines
3.1 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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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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resource
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download_resource__legacy
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{
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"/_matrix/media/v1/download/",
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{
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"(11.7.1.2) download (legacy)",
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resource::DIRECTORY,
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}
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};
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static resource::response
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get__download_local(client &client,
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const 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 resource::response
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get__download(client &client,
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const 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.user_id
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};
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const m::room::id::buf room_id
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{
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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 resource::response
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get__download_local(client &client,
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const 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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// Get the file's total size
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size_t file_size{0};
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room.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>("value");
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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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room.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 auto &value
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{
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unquote(at<"content"_>(event).at("value"))
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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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// Send HTTP head to client
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resource::response
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{
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client, http::OK, content_type, file_size
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};
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size_t sent{0}, read;
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read = read_each_block(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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if(unlikely(read != file_size)) log::error
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{
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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 resource::method
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method_get
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{
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download_resource, "GET", get__download
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};
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static resource::method
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method_get__legacy
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{
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download_resource__legacy, "GET", get__download
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};
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