Mercurial > hg > orthanc
view Plugins/Samples/ServeFolders/Plugin.cpp @ 2118:9cf176bc21ad
Content-Type for JSON documents is now "application/json; charset=utf-8"
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 02 Nov 2016 12:16:03 +0100 |
parents | 40ffd0e8676a |
children | 700dbb3baac9 |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital 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 "../Common/OrthancPluginCppWrapper.h" #include <json/reader.h> #include <json/value.h> #include <boost/filesystem.hpp> #include <boost/date_time/posix_time/posix_time.hpp> static OrthancPluginContext* context_ = NULL; static std::map<std::string, std::string> folders_; static const char* INDEX_URI = "/app/plugin-serve-folders.html"; static bool allowCache_ = true; static bool generateETag_ = true; // TODO parameter static void SetHttpHeaders(OrthancPluginRestOutput* output) { if (!allowCache_) { // http://stackoverflow.com/a/2068407/881731 OrthancPluginSetHttpHeader(context_, output, "Cache-Control", "no-cache, no-store, must-revalidate"); OrthancPluginSetHttpHeader(context_, output, "Pragma", "no-cache"); OrthancPluginSetHttpHeader(context_, output, "Expires", "0"); } } static const char* GetMimeType(const std::string& path) { size_t dot = path.find_last_of('.'); std::string extension = (dot == std::string::npos) ? "" : path.substr(dot); std::transform(extension.begin(), extension.end(), extension.begin(), tolower); if (extension == ".html") { return "text/html"; } else if (extension == ".css") { return "text/css"; } else if (extension == ".js") { return "application/javascript"; } else if (extension == ".gif") { return "image/gif"; } else if (extension == ".svg") { return "image/svg+xml"; } else if (extension == ".json" || extension == ".nmf") { return "application/json"; } else if (extension == ".xml") { return "application/xml"; } else if (extension == ".png") { return "image/png"; } else if (extension == ".jpg" || extension == ".jpeg") { return "image/jpeg"; } else if (extension == ".woff") { return "application/x-font-woff"; } else if (extension == ".pexe") { return "application/x-pnacl"; } else if (extension == ".nexe") { return "application/x-nacl"; } else { std::string s = "Unknown MIME type for extension: " + extension; OrthancPluginLogWarning(context_, s.c_str()); return "application/octet-stream"; } } static bool ReadFile(std::string& target, const std::string& path) { try { OrthancPlugins::MemoryBuffer buffer(context_); buffer.ReadFile(path); buffer.ToString(target); return true; } catch (OrthancPlugins::PluginException) { return false; } } static bool ReadConfiguration(Json::Value& configuration, OrthancPluginContext* context) { std::string s; { char* tmp = OrthancPluginGetConfiguration(context); if (tmp == NULL) { OrthancPluginLogError(context, "Error while retrieving the configuration from Orthanc"); return false; } s.assign(tmp); OrthancPluginFreeString(context, tmp); } Json::Reader reader; if (reader.parse(s, configuration)) { return true; } else { OrthancPluginLogError(context, "Unable to parse the configuration"); return false; } } static bool LookupFolder(std::string& folder, OrthancPluginRestOutput* output, const OrthancPluginHttpRequest* request) { const std::string uri = request->groups[0]; std::map<std::string, std::string>::const_iterator found = folders_.find(uri); if (found == folders_.end()) { std::string s = "Unknown URI in plugin server-folders: " + uri; OrthancPluginLogError(context_, s.c_str()); OrthancPluginSendHttpStatusCode(context_, output, 404); return false; } else { folder = found->second; return true; } } static OrthancPluginErrorCode FolderCallback(OrthancPluginRestOutput* output, const char* url, const OrthancPluginHttpRequest* request) { namespace fs = boost::filesystem; if (request->method != OrthancPluginHttpMethod_Get) { OrthancPluginSendMethodNotAllowed(context_, output, "GET"); return OrthancPluginErrorCode_Success; } std::string folder; if (LookupFolder(folder, output, request)) { const fs::path item(request->groups[1]); const fs::path parent((fs::path(folder) / item).parent_path()); if (item.filename().string() == "index.html" && fs::is_directory(parent) && !fs::is_regular_file(fs::path(folder) / item)) { // On-the-fly generation of an "index.html" std::string s; s += "<html>\n"; s += " <body>\n"; s += " <ul>\n"; fs::directory_iterator end; for (fs::directory_iterator it(parent) ; it != end; ++it) { if (fs::is_directory(it->status())) { std::string f = it->path().filename().string(); s += " <li><a href=\"" + f + "/index.html\">" + f + "/</a></li>\n"; } } for (fs::directory_iterator it(parent) ; it != end; ++it) { fs::file_type type = it->status().type(); if (type == fs::regular_file || type == fs::reparse_file) // cf. BitBucket issue #11 { std::string f = it->path().filename().string(); s += " <li><a href=\"" + f + "\">" + f + "</a></li>\n"; } } s += " </ul>\n"; s += " </body>\n"; s += "</html>\n"; SetHttpHeaders(output); OrthancPluginAnswerBuffer(context_, output, s.c_str(), s.size(), "text/html"); } else { std::string path = folder + "/" + item.string(); const char* mime = GetMimeType(path); std::string s; if (ReadFile(s, path)) { const char* resource = s.size() ? s.c_str() : NULL; if (generateETag_) { OrthancPlugins::OrthancString md5(context_, OrthancPluginComputeMd5(context_, resource, s.size())); std::string etag = "\"" + std::string(md5.GetContent()) + "\""; OrthancPluginSetHttpHeader(context_, output, "ETag", etag.c_str()); } boost::posix_time::ptime lastModification = boost::posix_time::from_time_t(fs::last_write_time(path)); std::string t = boost::posix_time::to_iso_string(lastModification); OrthancPluginSetHttpHeader(context_, output, "Last-Modified", t.c_str()); SetHttpHeaders(output); OrthancPluginAnswerBuffer(context_, output, resource, s.size(), mime); } else { std::string s = "Inexistent file in served folder: " + path; OrthancPluginLogError(context_, s.c_str()); OrthancPluginSendHttpStatusCode(context_, output, 404); } } } return OrthancPluginErrorCode_Success; } static OrthancPluginErrorCode ListServedFolders(OrthancPluginRestOutput* output, const char* url, const OrthancPluginHttpRequest* request) { if (request->method != OrthancPluginHttpMethod_Get) { OrthancPluginSendMethodNotAllowed(context_, output, "GET"); return OrthancPluginErrorCode_Success; } std::string s = "<html><body><h1>Additional folders served by Orthanc</h1>\n"; if (folders_.empty()) { s += "<p>Empty section <tt>ServeFolders</tt> in your configuration file: No additional folder is served.</p>\n"; } else { s += "<ul>\n"; for (std::map<std::string, std::string>::const_iterator it = folders_.begin(); it != folders_.end(); ++it) { // The URI is relative to INDEX_URI ("/app/plugin-serve-folders.html") s += "<li><a href=\"../" + it->first + "/index.html\">" + it->first + "</li>\n"; } s += "</ul>\n"; } s += "</body></html>\n"; SetHttpHeaders(output); OrthancPluginAnswerBuffer(context_, output, s.c_str(), s.size(), "text/html"); return OrthancPluginErrorCode_Success; } extern "C" { ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context) { context_ = context; /* Check the version of the Orthanc core */ if (OrthancPluginCheckVersion(context_) == 0) { char info[1024]; sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", context_->orthancVersion, ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); OrthancPluginLogError(context_, info); return -1; } OrthancPluginSetDescription(context_, "Serve additional folders with the HTTP server of Orthanc."); Json::Value configuration; if (!ReadConfiguration(configuration, context_)) { return -1; } if (configuration.isMember("ServeFoldersNoCache")) { OrthancPluginLogWarning(context_, "Disabling the cache"); allowCache_ = false; } if (configuration.isMember("ServeFolders")) { if (configuration["ServeFolders"].type() != Json::objectValue) { OrthancPluginLogError(context_, "The \"ServeFolders\" configuration section is badly formatted (must be a JSON object)"); return -1; } } else { OrthancPluginLogWarning(context_, "No section \"ServeFolders\" in your configuration file: " "No additional folder will be served!"); configuration["ServeFolders"] = Json::objectValue; } Json::Value::Members members = configuration["ServeFolders"].getMemberNames(); // Register the callback for each base URI for (Json::Value::Members::const_iterator it = members.begin(); it != members.end(); ++it) { std::string baseUri = *it; // Remove the heading and trailing slashes in the root URI, if any while (!baseUri.empty() && *baseUri.begin() == '/') { baseUri = baseUri.substr(1); } while (!baseUri.empty() && *baseUri.rbegin() == '/') { baseUri.resize(baseUri.size() - 1); } if (baseUri.empty()) { OrthancPluginLogError(context_, "The URI of a folder to be served cannot be empty"); return -1; } // Check whether the source folder exists and is indeed a directory const std::string folder = configuration["ServeFolders"][*it].asString(); if (!boost::filesystem::is_directory(folder)) { std::string msg = "Trying and serve an inexistent folder: " + folder; OrthancPluginLogError(context_, msg.c_str()); return -1; } folders_[baseUri] = folder; // Register the callback to serve the folder { const std::string regex = "/(" + baseUri + ")/(.*)"; OrthancPluginRegisterRestCallback(context, regex.c_str(), FolderCallback); } } OrthancPluginRegisterRestCallback(context, INDEX_URI, ListServedFolders); OrthancPluginSetRootUri(context, INDEX_URI); return 0; } ORTHANC_PLUGINS_API void OrthancPluginFinalize() { } ORTHANC_PLUGINS_API const char* OrthancPluginGetName() { return "serve-folders"; } ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() { return SERVE_FOLDERS_VERSION; } }