mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-09 00:00:00 +01:00
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/* API Response.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <villas/api/request.hpp>
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#include <villas/api/response.hpp>
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#include <villas/config.hpp>
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using namespace villas::node::api;
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Response::Response(Session *s, int c, const std::string &ct, const Buffer &b)
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: session(s), logger(logging.get("api:response")), buffer(b), code(c),
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contentType(ct),
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headers{{"Server:", HTTP_USER_AGENT},
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{"Access-Control-Allow-Origin:", "*"},
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{"Access-Control-Allow-Methods:", "GET, POST, OPTIONS"},
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{"Access-Control-Allow-Headers:", "Content-Type"},
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{"Access-Control-Max-Age:", "86400"}} {}
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int Response::writeBody(struct lws *wsi) {
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int ret;
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ret = lws_write(wsi, (unsigned char *)buffer.data(), buffer.size(),
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LWS_WRITE_HTTP_FINAL);
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if (ret < 0)
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return -1;
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return 1;
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}
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int Response::writeHeaders(struct lws *wsi) {
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int ret;
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uint8_t headerBuffer[2048], *p = headerBuffer,
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*end = &headerBuffer[sizeof(headerBuffer) - 1];
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// We need to encode the buffer here for getting the real content length of the response
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encodeBody();
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ret = lws_add_http_common_headers(wsi, code, contentType.c_str(),
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buffer.size(), &p, end);
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if (ret)
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return 1;
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for (auto &hdr : headers) {
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ret = lws_add_http_header_by_name(
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wsi, reinterpret_cast<const unsigned char *>(hdr.first.c_str()),
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reinterpret_cast<const unsigned char *>(hdr.second.c_str()),
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hdr.second.size(), &p, end);
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if (ret)
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return -1;
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}
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ret = lws_finalize_write_http_header(wsi, headerBuffer, &p, end);
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if (ret)
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return 1;
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// Do we have a body to send?
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if (buffer.size() > 0)
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lws_callback_on_writable(wsi);
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return 0;
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}
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JsonResponse::~JsonResponse() {
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if (response)
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json_decref(response);
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}
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void JsonResponse::encodeBody() { buffer.encode(response, JSON_INDENT(4)); }
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