Mercurial > hg > orthanc
diff Core/HttpServer/HttpOutput.cpp @ 0:3959d33612cc
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 19 Jul 2012 14:32:22 +0200 |
parents | |
children | 3a584803783e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Core/HttpServer/HttpOutput.cpp Thu Jul 19 14:32:22 2012 +0200 @@ -0,0 +1,188 @@ +/** + * Palantir - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012 Medical Physics Department, CHU of Liege, + * Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "HttpOutput.h" + +#include <vector> +#include <stdio.h> +#include <boost/lexical_cast.hpp> +#include "../PalantirException.h" +#include "../Toolbox.h" +#include "../../PalantirCppClient/HttpException.h" + +namespace Palantir +{ + void HttpOutput::SendString(const std::string& s) + { + if (s.size() > 0) + Send(&s[0], s.size()); + } + + void HttpOutput::SendOkHeader(const std::string& contentType) + { + SendOkHeader(contentType.c_str(), false, 0); + } + + void HttpOutput::SendOkHeader() + { + SendOkHeader(NULL, false, 0); + } + + void HttpOutput::SendOkHeader(uint64_t contentLength) + { + SendOkHeader(NULL, true, contentLength); + } + + void HttpOutput::SendOkHeader(const std::string& contentType, + uint64_t contentLength) + { + SendOkHeader(contentType.c_str(), true, contentLength); + } + + + void HttpOutput::SendOkHeader(const char* contentType, + bool hasContentLength, + size_t contentLength) + { + std::string s = "HTTP/1.1 200 OK\r\n"; + + if (contentType) + { + s += "Content-Type: " + std::string(contentType) + "\r\n"; + } + + if (hasContentLength) + { + s += "Content-Length: " + boost::lexical_cast<std::string>(contentLength) + "\r\n"; + } + + s += "\r\n"; + + Send(&s[0], s.size()); + } + + + void HttpOutput::SendMethodNotAllowedError(const std::string& allowed) + { + std::string s = + "HTTP/1.1 405 " + std::string(HttpException::GetDescription(HttpStatus_405_MethodNotAllowed)) + + "\r\nAllow: " + allowed + + "\r\n\r\n"; + Send(&s[0], s.size()); + } + + + void HttpOutput::SendHeader(HttpStatus status) + { + if (status == HttpStatus_200_Ok || + status == HttpStatus_405_MethodNotAllowed) + { + throw PalantirException("Please use the dedicated methods to this HTTP status code in HttpOutput"); + } + + SendHeaderInternal(status); + } + + + void HttpOutput::SendHeaderInternal(HttpStatus status) + { + std::string s = "HTTP/1.1 " + + boost::lexical_cast<std::string>(status) + + " " + std::string(HttpException::GetDescription(status)) + + "\r\n\r\n"; + Send(&s[0], s.size()); + } + + + void HttpOutput::AnswerBufferWithContentType(const std::string& buffer, + const std::string& contentType) + { + SendOkHeader(contentType.c_str(), true, buffer.size()); + SendString(buffer); + } + + + void HttpOutput::AnswerBufferWithContentType(const void* buffer, + size_t size, + const std::string& contentType) + { + SendOkHeader(contentType.c_str(), true, size); + Send(buffer, size); + } + + + void HttpOutput::AnswerFileWithContentType(const std::string& path, + const std::string& contentType) + { + uint64_t fileSize = Toolbox::GetFileSize(path); + + FILE* fp = fopen(path.c_str(), "rb"); + if (!fp) + { + SendHeaderInternal(HttpStatus_500_InternalServerError); + return; + } + + SendOkHeader(contentType.c_str(), true, fileSize); + + std::vector<uint8_t> buffer(1024 * 1024); // Chunks of 1MB + + for (;;) + { + size_t nbytes = fread(&buffer[0], 1, buffer.size(), fp); + if (nbytes == 0) + { + break; + } + else + { + Send(&buffer[0], nbytes); + } + } + + fclose(fp); + } + + + void HttpOutput::AnswerFileAutodetectContentType(const std::string& path) + { + AnswerFileWithContentType(path, Toolbox::AutodetectMimeType(path)); + } + + + void HttpOutput::AnswerFile(const FileStorage& storage, + const std::string& uuid, + const std::string& contentType) + { + boost::filesystem::path p(storage.GetPath(uuid)); + AnswerFileWithContentType(p.string(), contentType); + } + + + + void HttpOutput::Redirect(const std::string& path) + { + std::string s = + "HTTP/1.1 301 " + std::string(HttpException::GetDescription(HttpStatus_301_MovedPermanently)) + + "\r\nLocation: " + path + + "\r\n\r\n"; + Send(&s[0], s.size()); + } +}