/** httpserver ResourceHost.cpp Copyright 2011-2014 Ramsey Kant Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ #include "ResourceHost.h" ResourceHost::ResourceHost(std::string base) { baseDiskPath = base; // Check to see if the disk base path is a valid path } ResourceHost::~ResourceHost() { } /** * Looks up a MIME type in the dictionary * * @param ext File extension to use for the lookup * @return MIME type as a String. If type could not be found, returns the default 'text/html' */ std::string ResourceHost::lookupMimeType(std::string ext) { std::unordered_map<:string std::string>::const_iterator it = mimeMap.find(ext); if(it == mimeMap.end()) return "text/html"; return it->second; } /** * Read File * Read a file from disk and return the appropriate Resource object * * @param path Full disk path of the file * @param sb Filled in stat struct * @return Return's the resource object upon successful load */ Resource* ResourceHost::readFile(std::string path, struct stat sb) { // Make sure the webserver USER owns the file if(!(sb.st_mode & S_IRWXU)) return NULL; std::ifstream file; unsigned int len = 0; // Open the file file.open(path.c_str(), std::ios::binary); // Return null if the file failed to open if(!file.is_open()) return NULL; // Get the length of the file /*file.seekg(0, std::ios::end); len = file.tellg(); file.seekg(0, std::ios::beg);*/ len = sb.st_size; // Allocate memory for contents of file and read in the contents byte* fdata = new byte[len]; file.read((char*)fdata, len); // Close the file file.close(); // Create a new Resource object and setup it's contents Resource* res = new Resource(path); res->setMimeType(lookupMimeType(res->getExtension())); res->setData(fdata, len); return res; } /** * Read Directory * Read a directory (list or index) from disk into a Resource object * * @param path Full disk path of the file * @param sb Filled in stat struct * @return Return's the resource object upon successful load */ Resource* ResourceHost::readDirectory(std::string path, struct stat sb) { Resource* res = NULL; // Make the path end with a / (for consistency) if it doesnt already if(path.empty() || path[path.length()-1] != '/') path += "/"; // Probe for valid indexes int numIndexes = sizeof(validIndexes) / sizeof(*validIndexes); std::string loadIndex; struct stat sidx; for(int i = 0; i < numIndexes; i++) { loadIndex = path + validIndexes[i]; // Found a suitable index file to load and return to the client if(stat(loadIndex.c_str(), &sidx) != -1) return readFile(loadIndex.c_str(), sidx); } // Make sure the webserver USER owns the directory if(!(sb.st_mode & S_IRWXU)) return NULL; // Generate an HTML directory listing std::string listing = generateDirList(path); unsigned int slen = listing.length(); char* sdata = new char[slen]; strncpy(sdata, listing.c_str(), slen); res = new Resource(path, true); res->setData((byte*)sdata, slen); return res; } /** * Return an HTML directory listing provided by the relative path dirPath * * @param path Full disk path of the file * @return HTML string representation of the directory. Blank string if invalid directory */ std::string ResourceHost::generateDirList(std::string path) { // Get just the relative uri from the entire path by stripping out the baseDiskPath from the beginning size_t uri_pos = path.find_last_of(baseDiskPath); std::string uri = "?"; if(uri_pos != std::string::npos) uri = path.substr(uri_pos); std::stringstream ret; ret << "