601 lines
26 KiB
C++
601 lines
26 KiB
C++
#include "Global.h"
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#include "Performance_Monitor.h"
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#include <algorithm>
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#include <asio/random_access_file.hpp>
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#include <asio/read_at.hpp>
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#include <asio/use_awaitable.hpp>
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#include <cctype>
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#include <cstdint>
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#include <ctime>
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#include <filesystem>
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#include <format>
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#include <limits>
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#include <optional>
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#include <stdexcept>
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#include <string>
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#include <string_view>
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#include <sys/stat.h>
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#include <vector>
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namespace {
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constexpr std::uint64_t kMaxTileFileSize = 32ull * 1024ull * 1024ull;
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enum class Tile_Load_Status {
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Ready,
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Not_Found,
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Not_Modified
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};
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struct Tile_Request {
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std::uint32_t z;
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std::uint32_t x;
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std::uint32_t y;
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std::string extension;
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};
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struct Tile_Cache_Request {
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std::string if_none_match;
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std::string if_modified_since;
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bool include_body;
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};
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struct File_Cache_Info {
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std::uint64_t size;
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std::time_t modified_time;
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std::string etag;
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std::string last_modified;
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};
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struct Tile_Load_Result {
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Tile_Load_Status status;
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std::string path;
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std::string content;
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std::string content_type;
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File_Cache_Info cache_info;
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};
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std::string format_http_date(std::time_t time) {
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std::tm tm{};
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#ifdef _WIN32
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gmtime_s(&tm, &time);
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#else
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gmtime_r(&time, &tm);
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#endif
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char buffer[64];
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auto size = std::strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S GMT", &tm);
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return std::string(buffer, size);
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}
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std::optional<File_Cache_Info> get_file_cache_info(const std::filesystem::path& path) {
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#ifdef _WIN32
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struct _stati64 info{};
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if (_wstati64(path.c_str(), &info) != 0 || (info.st_mode & _S_IFMT) != _S_IFREG || info.st_size < 0) {
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return std::nullopt;
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}
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#else
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struct stat info{};
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if (::stat(path.c_str(), &info) != 0 || !S_ISREG(info.st_mode) || info.st_size < 0) {
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return std::nullopt;
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}
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#endif
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File_Cache_Info result;
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result.size = static_cast<std::uint64_t>(info.st_size);
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result.modified_time = info.st_mtime;
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result.etag = std::format("W/\"{:x}-{:x}\"", static_cast<std::uint64_t>(result.modified_time), result.size);
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result.last_modified = format_http_date(result.modified_time);
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return result;
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}
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std::string_view trim_http_ows(std::string_view value) {
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while (!value.empty() && (value.front() == ' ' || value.front() == '\t')) {
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value.remove_prefix(1);
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}
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while (!value.empty() && (value.back() == ' ' || value.back() == '\t')) {
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value.remove_suffix(1);
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}
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return value;
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}
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std::string_view remove_weak_prefix(std::string_view etag) {
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if (etag.starts_with("W/")) {
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etag.remove_prefix(2);
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}
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return etag;
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}
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bool etag_matches(std::string_view values, std::string_view current_etag) {
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while (!values.empty()) {
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auto pos = values.find(',');
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auto value = trim_http_ows(values.substr(0, pos));
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if (value == "*" || remove_weak_prefix(value) == remove_weak_prefix(current_etag)) {
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return true;
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}
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if (pos == std::string_view::npos) {
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break;
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}
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values.remove_prefix(pos + 1);
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}
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return false;
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}
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bool is_not_modified(const Tile_Cache_Request& request, const File_Cache_Info& info) {
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if (!request.if_none_match.empty()) {
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return etag_matches(request.if_none_match, info.etag);
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}
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return !request.if_modified_since.empty() && request.if_modified_since == info.last_modified;
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}
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void add_tile_cache_headers(const drogon::HttpResponsePtr& response, const File_Cache_Info& info, bool include_content_length) {
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response->addHeader("Cache-Control", "public, max-age=86400");
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response->addHeader("ETag", info.etag);
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response->addHeader("Last-Modified", info.last_modified);
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if (include_content_length) {
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response->addHeader("Content-Length", std::to_string(info.size));
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}
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}
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bool is_unsigned_path_component(std::string_view value) {
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if (value.empty()) {
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return false;
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}
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return std::ranges::all_of(value, [](unsigned char ch) {
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return std::isdigit(ch) != 0;
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});
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}
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std::uint32_t parse_uint32_component(std::string_view value) {
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std::uint64_t result = 0;
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for (char ch : value) {
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result = result * 10 + static_cast<std::uint64_t>(ch - '0');
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if (result > std::numeric_limits<std::uint32_t>::max()) {
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throw std::out_of_range("tile coordinate is too large");
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}
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}
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return static_cast<std::uint32_t>(result);
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}
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std::optional<Tile_Request> parse_tile_request(std::string_view path, std::string_view prefix, std::string_view default_extension) {
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if (!path.starts_with(prefix)) {
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return std::nullopt;
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}
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path.remove_prefix(prefix.size());
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auto first = path.find('/');
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auto second = first == std::string_view::npos ? std::string_view::npos : path.find('/', first + 1);
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if (first == std::string_view::npos || second == std::string_view::npos || path.find('/', second + 1) != std::string_view::npos) {
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return std::nullopt;
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}
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auto z = path.substr(0, first);
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auto x = path.substr(first + 1, second - first - 1);
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auto y_with_extension = path.substr(second + 1);
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auto dot = y_with_extension.rfind('.');
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auto y = dot == std::string_view::npos ? y_with_extension : y_with_extension.substr(0, dot);
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auto extension = dot == std::string_view::npos ? std::string(default_extension) : std::string(y_with_extension.substr(dot));
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if (!is_unsigned_path_component(z) || !is_unsigned_path_component(x) || !is_unsigned_path_component(y) || extension != default_extension) {
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return std::nullopt;
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}
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return Tile_Request{parse_uint32_component(z), parse_uint32_component(x), parse_uint32_component(y), extension};
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}
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class Tile_Path_Resolver {
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public:
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explicit Tile_Path_Resolver(const Map_Tile_Config& config)
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: config_(config), directories_(config.get_true_directories()) {
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if (config_.path_layout != "z/x/y" && config_.path_layout != "z/y/x") {
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throw std::invalid_argument("invalid tile path_layout: " + config_.path_layout);
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}
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if (config_.extension.empty() || config_.extension.front() != '.') {
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throw std::invalid_argument("invalid tile extension: " + config_.extension);
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}
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}
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std::optional<std::filesystem::path> find_file(const Tile_Request& request) const {
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if (request.z < config_.minimum_level || request.z > config_.maximum_level) {
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return std::nullopt;
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}
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auto relative = relative_path(request);
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for (const auto& directory : directories_) {
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auto path = std::filesystem::path(directory) / relative;
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if (std::filesystem::is_regular_file(path)) {
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return path;
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}
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}
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return std::nullopt;
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}
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const Map_Tile_Config& config() const {
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return config_;
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}
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private:
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std::filesystem::path relative_path(const Tile_Request& request) const {
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auto z = std::to_string(request.z);
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auto x = std::to_string(request.x);
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auto y = std::to_string(request.y) + config_.extension;
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if (config_.path_layout == "z/x/y") {
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return std::filesystem::path(z) / x / y;
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}
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return std::filesystem::path(z) / std::to_string(request.y) / (std::to_string(request.x) + config_.extension);
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}
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Map_Tile_Config config_;
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std::vector<std::string> directories_;
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};
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class Tile_Source {
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public:
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explicit Tile_Source(Map_Tile_Config config)
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: resolver_(config) {}
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asio::awaitable<Tile_Load_Result> load(const Tile_Request& request, const Tile_Cache_Request& cache_request) const {
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auto path = resolver_.find_file(request);
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if (!path) {
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co_return Tile_Load_Result{Tile_Load_Status::Not_Found};
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}
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auto cache_info = get_file_cache_info(*path);
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if (!cache_info) {
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co_return Tile_Load_Result{Tile_Load_Status::Not_Found};
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}
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if (cache_info->size > kMaxTileFileSize || cache_info->size > std::numeric_limits<std::size_t>::max()) {
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throw std::runtime_error("tile file is too large: " + path->generic_string());
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}
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auto generic_path = path->generic_string();
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auto content_type = httplib::detail::find_content_type(generic_path, {}, "application/octet-stream");
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if (is_not_modified(cache_request, *cache_info)) {
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co_return Tile_Load_Result{Tile_Load_Status::Not_Modified, std::move(generic_path), {}, std::move(content_type), *cache_info};
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}
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std::string content;
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if (cache_request.include_body) {
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auto executor = co_await asio::this_coro::executor;
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asio::random_access_file file(executor, path->generic_string(), asio::file_base::read_only);
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content.resize(static_cast<std::size_t>(cache_info->size));
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if (!content.empty()) {
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co_await asio::async_read_at(file, 0, asio::buffer(content.data(), content.size()), asio::use_awaitable);
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}
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}
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co_return Tile_Load_Result{Tile_Load_Status::Ready, std::move(generic_path), std::move(content), std::move(content_type), *cache_info};
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}
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const Map_Tile_Config& config() const {
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return resolver_.config();
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}
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private:
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Tile_Path_Resolver resolver_;
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};
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drogon::HttpResponsePtr make_tile_not_found_response(std::string_view request_path, bool include_body) {
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auto response = drogon::HttpResponse::newHttpResponse();
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JSON ret = JSON::object();
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ret.append({"LOG_POS", LOG_POS});
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ret.append({"not_found_path", std::string(request_path)});
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response->setStatusCode(drogon::k404NotFound);
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response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
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if (include_body) {
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response->setBody(ret.to_json_string());
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}
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response->addHeader("Cache-Control", "no-store");
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return response;
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}
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drogon::HttpResponsePtr make_tile_not_modified_response(const File_Cache_Info& info) {
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auto response = drogon::HttpResponse::newHttpResponse();
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response->setStatusCode(drogon::k304NotModified);
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response->setContentTypeCode(drogon::CT_NONE);
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add_tile_cache_headers(response, info, false);
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return response;
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}
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drogon::HttpResponsePtr make_tile_ok_response(Tile_Load_Result&& result, bool include_body) {
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auto response = drogon::HttpResponse::newHttpResponse();
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response->setStatusCode(drogon::k200OK);
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response->setContentTypeString(result.content_type);
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add_tile_cache_headers(response, result.cache_info, !include_body);
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if (include_body) {
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response->setBody(std::move(result.content));
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}
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return response;
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}
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drogon::HttpResponsePtr make_tile_response(Tile_Load_Result&& result, std::string_view request_path, bool include_body) {
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switch (result.status) {
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case Tile_Load_Status::Ready:
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return make_tile_ok_response(std::move(result), include_body);
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case Tile_Load_Status::Not_Modified:
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return make_tile_not_modified_response(result.cache_info);
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case Tile_Load_Status::Not_Found:
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return make_tile_not_found_response(request_path, include_body);
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}
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return make_tile_not_found_response(request_path, include_body);
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}
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drogon::HttpResponsePtr make_tile_read_failed_response(const std::exception& error, bool include_body) {
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auto response = drogon::HttpResponse::newHttpResponse();
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response->setStatusCode(drogon::k500InternalServerError);
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response->setContentTypeCode(drogon::CT_APPLICATION_JSON);
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if (include_body) {
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response->setBody(Psc::JSON::object({{"error", Psc::platform_2_utf8(error.what())}}).to_json_string());
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}
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return response;
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}
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Tile_Cache_Request make_cache_request(const drogon::HttpRequestPtr& req) {
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return Tile_Cache_Request{
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req->getHeader("if-none-match"),
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req->getHeader("if-modified-since"),
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req->method() != drogon::Head
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};
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}
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void register_tile_handler(std::string_view regex, std::string_view prefix, std::shared_ptr<Tile_Source> source) {
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drogon::app().registerHandlerViaRegex(
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std::string(regex),
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[prefix = std::string(prefix), source = std::move(source)](
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const drogon::HttpRequestPtr& req,
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std::function<void(const drogon::HttpResponsePtr&)>&& callback) mutable {
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auto cache_request = make_cache_request(req);
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auto request = parse_tile_request(req->path(), prefix, source->config().extension);
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if (!request) {
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callback(make_tile_not_found_response(req->path(), cache_request.include_body));
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return;
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}
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drogon::async_run(
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[callback = std::move(callback), source, request = std::move(*request), cache_request = std::move(cache_request), path = req->path()]() mutable -> drogon::Task<> {
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try {
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auto result = co_await Ecap_Coro::to_drogon(source->load(request, cache_request));
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callback(make_tile_response(std::move(result), path, cache_request.include_body));
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}
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catch (const std::exception& error) {
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if (server_logger) {
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server_logger->error("tiles", {}, LOG_POS + " " + Psc::platform_2_utf8(error.what()));
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}
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callback(make_tile_read_failed_response(error, cache_request.include_body));
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}
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co_return;
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});
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},
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{drogon::Get, drogon::Head});
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}
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void register_map_resources_handler() {
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drogon::app().registerHandlerViaRegex(
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R"(^/map/resources$)",
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[](const drogon::HttpRequestPtr& req,
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std::function<void(const drogon::HttpResponsePtr&)>&& callback) {
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auto global = Global::instance();
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auto response = drogon::HttpResponse::newHttpResponse();
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if (req->method() == drogon::Post) {
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auto parsed = Psc::try_parse_json(req->body().data());
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if (!parsed.has_value()) {
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response->setStatusCode(drogon::k400BadRequest);
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response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
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response->setBody("invalid current_imagery_key");
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callback(response);
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return;
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}
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auto key = parsed.value().try_get_string("current_imagery_key");
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if (!key.has_value() || !global->map_resources_config.is_imagery_key(key.value())) {
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response->setStatusCode(drogon::k400BadRequest);
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response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
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response->setBody("invalid current_imagery_key");
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callback(response);
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return;
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}
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global->map_resources_config.current_imagery_key = key.value();
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Global::save();
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}
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response->setStatusCode(drogon::k200OK);
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response->setContentTypeCode(drogon::CT_APPLICATION_JSON);
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response->setBody(global->map_resources_config.to_public_json().to_json_string());
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response->addHeader("Cache-Control", "no-store");
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callback(response);
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},
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{drogon::Get, drogon::Post});
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}
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void register_map_graphics_handler() {
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drogon::app().registerHandlerViaRegex(
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R"(^/map/graphics$)",
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[](const drogon::HttpRequestPtr& req,
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std::function<void(const drogon::HttpResponsePtr&)>&& callback) {
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auto global = Global::instance();
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auto response = drogon::HttpResponse::newHttpResponse();
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if (req->method() == drogon::Post) {
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auto parsed = Psc::try_parse_json(req->body().data());
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if (!parsed.has_value()) {
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response->setStatusCode(drogon::k400BadRequest);
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response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
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response->setBody("invalid cesium_graphics");
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callback(response);
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return;
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}
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try {
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global->cesium_graphics_config.from_base_json(&parsed.value());
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Global::save();
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}
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catch (const std::exception& error) {
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response->setStatusCode(drogon::k400BadRequest);
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response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
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response->setBody(Psc::platform_2_utf8(error.what()));
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callback(response);
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return;
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}
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}
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response->setStatusCode(drogon::k200OK);
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response->setContentTypeCode(drogon::CT_APPLICATION_JSON);
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response->setBody(global->cesium_graphics_config.to_base_json().to_json_string());
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response->addHeader("Cache-Control", "no-store");
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callback(response);
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},
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{drogon::Get, drogon::Post});
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}
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Psc::JSON make_map_view_response(Global* global) {
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auto ret = global->map_view_config.to_base_json();
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ret.append({"current_imagery_key", global->map_resources_config.current_imagery_key});
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return ret;
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}
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bool is_multipart_request(const drogon::HttpRequestPtr& req) {
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auto content_type = req->getHeader("content-type");
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return content_type.find("multipart/form-data") != std::string::npos;
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}
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std::string normalize_upload_extension(std::string extension) {
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std::ranges::transform(extension, extension.begin(), [](unsigned char ch) {
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return static_cast<char>(std::tolower(ch));
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});
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if (!extension.empty() && extension.front() != '.') {
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extension.insert(extension.begin(), '.');
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}
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return extension;
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}
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std::filesystem::path web_model_directory(Global* global) {
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return std::filesystem::path(global->web_server_config.get_true_webapp()) / "model";
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}
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std::filesystem::path source_model_directory(Global* global) {
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return std::filesystem::path(global->web_server_config.get_true_webapp()).parent_path() / "model";
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}
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bool is_safe_aircraft_model_key(std::string_view key) {
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return !key.empty() && std::ranges::all_of(key, [](unsigned char ch) {
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return std::isalnum(ch) != 0 || ch == '_';
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});
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}
|
|
std::string model_file_name(std::string_view model_type, std::string_view aircraft_model_key) {
|
|
if (model_type == "aircraft") {
|
|
return "aircraft-custom.glb";
|
|
}
|
|
if (model_type == "aircraft_type") {
|
|
if (!is_safe_aircraft_model_key(aircraft_model_key)) {
|
|
throw std::invalid_argument("invalid aircraft_model_key");
|
|
}
|
|
auto normalized_key = std::string(aircraft_model_key);
|
|
std::ranges::replace(normalized_key, '_', '-');
|
|
return "aircraft-" + normalized_key + ".glb";
|
|
}
|
|
if (model_type == "base_station") {
|
|
return "base-station-custom.glb";
|
|
}
|
|
if (model_type == "device") {
|
|
return "device-custom.glb";
|
|
}
|
|
throw std::invalid_argument("invalid model_type");
|
|
}
|
|
void save_uploaded_model_file(const drogon::HttpFile& upload,
|
|
std::string_view model_type,
|
|
std::string_view aircraft_model_key,
|
|
Global* global) {
|
|
auto extension = normalize_upload_extension(std::string(upload.getFileExtension()));
|
|
if (extension != ".glb") {
|
|
throw std::invalid_argument("model file must be .glb");
|
|
}
|
|
if (model_type == "aircraft_type" && !global->map_model_config.aircraft_models.contains(std::string(aircraft_model_key))) {
|
|
throw std::invalid_argument("unknown aircraft_model_key");
|
|
}
|
|
auto upload_dir = std::filesystem::path(drogon::app().getUploadPath());
|
|
std::filesystem::create_directories(upload_dir);
|
|
auto temp_name = std::string(model_type) + "_" + std::string(aircraft_model_key) + "_model_upload.tmp";
|
|
if (upload.saveAs(temp_name) != 0) {
|
|
throw std::runtime_error("cannot save uploaded model");
|
|
}
|
|
auto temp_path = upload_dir / temp_name;
|
|
auto file_name = model_file_name(model_type, aircraft_model_key);
|
|
auto web_dir = web_model_directory(global);
|
|
auto source_dir = source_model_directory(global);
|
|
std::filesystem::create_directories(web_dir);
|
|
std::filesystem::create_directories(source_dir);
|
|
std::filesystem::copy_file(temp_path, web_dir / file_name, std::filesystem::copy_options::overwrite_existing);
|
|
std::filesystem::copy_file(temp_path, source_dir / file_name, std::filesystem::copy_options::overwrite_existing);
|
|
std::filesystem::remove(temp_path);
|
|
auto url = "/ui/model/" + file_name;
|
|
if (model_type == "aircraft") {
|
|
global->map_model_config.aircraft_model.url = url;
|
|
}
|
|
else if (model_type == "aircraft_type") {
|
|
global->map_model_config.aircraft_models[std::string(aircraft_model_key)].url = url;
|
|
}
|
|
else if (model_type == "base_station") {
|
|
global->map_model_config.base_station_model.url = url;
|
|
}
|
|
else {
|
|
global->map_model_config.device_model.url = url;
|
|
}
|
|
}
|
|
void handle_map_model_upload(const drogon::HttpRequestPtr& req, Global* global) {
|
|
drogon::MultiPartParser parser;
|
|
if (parser.parse(req) != 0) {
|
|
throw std::invalid_argument("invalid multipart model upload");
|
|
}
|
|
auto model_type = parser.getOptionalParameter<std::string>("model_type");
|
|
if (!model_type || parser.getFiles().size() != 1) {
|
|
throw std::invalid_argument("model_type or file");
|
|
}
|
|
auto aircraft_model_key = parser.getOptionalParameter<std::string>("aircraft_model_key").value_or("");
|
|
save_uploaded_model_file(parser.getFiles().front(), *model_type, aircraft_model_key, global);
|
|
Global::save();
|
|
}
|
|
void handle_map_model_config_update(const drogon::HttpRequestPtr& req, Global* global) {
|
|
auto parsed = Psc::try_parse_json(req->body().data());
|
|
if (!parsed.has_value()) {
|
|
throw std::invalid_argument("invalid map_models");
|
|
}
|
|
global->map_model_config.from_base_json(&parsed.value());
|
|
Global::save();
|
|
}
|
|
void register_map_models_handler() {
|
|
drogon::app().registerHandlerViaRegex(
|
|
R"(^/map/models$)",
|
|
[](const drogon::HttpRequestPtr& req,
|
|
std::function<void(const drogon::HttpResponsePtr&)>&& callback) {
|
|
auto global = Global::instance();
|
|
auto response = drogon::HttpResponse::newHttpResponse();
|
|
try {
|
|
if (req->method() == drogon::Post) {
|
|
if (is_multipart_request(req)) {
|
|
handle_map_model_upload(req, global);
|
|
}
|
|
else {
|
|
handle_map_model_config_update(req, global);
|
|
}
|
|
}
|
|
response->setStatusCode(drogon::k200OK);
|
|
response->setContentTypeCode(drogon::CT_APPLICATION_JSON);
|
|
response->setBody(global->map_model_config.to_base_json().to_json_string());
|
|
}
|
|
catch (const std::exception& error) {
|
|
response->setStatusCode(drogon::k400BadRequest);
|
|
response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
|
|
response->setBody(Psc::platform_2_utf8(error.what()));
|
|
}
|
|
response->addHeader("Cache-Control", "no-store");
|
|
callback(response);
|
|
},
|
|
{drogon::Get, drogon::Post});
|
|
}
|
|
void register_map_view_handler() {
|
|
drogon::app().registerHandlerViaRegex(
|
|
R"(^/map/view$)",
|
|
[](const drogon::HttpRequestPtr& req,
|
|
std::function<void(const drogon::HttpResponsePtr&)>&& callback) {
|
|
auto global = Global::instance();
|
|
auto response = drogon::HttpResponse::newHttpResponse();
|
|
if (req->method() == drogon::Post) {
|
|
auto parsed = Psc::try_parse_json(req->body().data());
|
|
if (!parsed.has_value()) {
|
|
response->setStatusCode(drogon::k400BadRequest);
|
|
response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
|
|
response->setBody("invalid map_view");
|
|
callback(response);
|
|
return;
|
|
}
|
|
auto key = parsed.value().try_get_string("current_imagery_key");
|
|
if (!key.has_value() || !global->map_resources_config.is_imagery_key(key.value())) {
|
|
response->setStatusCode(drogon::k400BadRequest);
|
|
response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
|
|
response->setBody("invalid current_imagery_key");
|
|
callback(response);
|
|
return;
|
|
}
|
|
try {
|
|
auto next_view = global->map_view_config;
|
|
next_view.from_base_json(&parsed.value());
|
|
if (!global->map_resources_config.is_imagery_key(next_view.map2d.current_imagery_key) ||
|
|
!global->map_resources_config.is_imagery_key(next_view.map3d.current_imagery_key)) {
|
|
throw std::invalid_argument("invalid current_imagery_key");
|
|
}
|
|
global->map_resources_config.current_imagery_key = key.value();
|
|
global->map_view_config = next_view;
|
|
Global::save();
|
|
}
|
|
catch (const std::exception& error) {
|
|
response->setStatusCode(drogon::k400BadRequest);
|
|
response->setContentTypeCode(drogon::CT_TEXT_PLAIN);
|
|
response->setBody(Psc::platform_2_utf8(error.what()));
|
|
callback(response);
|
|
return;
|
|
}
|
|
}
|
|
response->setStatusCode(drogon::k200OK);
|
|
response->setContentTypeCode(drogon::CT_APPLICATION_JSON);
|
|
response->setBody(make_map_view_response(global).to_json_string());
|
|
response->addHeader("Cache-Control", "no-store");
|
|
callback(response);
|
|
},
|
|
{drogon::Get, drogon::Post});
|
|
}
|
|
}
|
|
void Global::init_tiles() {
|
|
auto imagery = std::make_shared<Tile_Source>(map_resources_config.imagery);
|
|
auto google_imagery = std::make_shared<Tile_Source>(map_resources_config.google_imagery);
|
|
auto terrain = std::make_shared<Tile_Source>(map_resources_config.terrain);
|
|
register_map_resources_handler();
|
|
register_map_graphics_handler();
|
|
register_map_models_handler();
|
|
register_map_view_handler();
|
|
register_tile_handler(R"(^/map/imagery/.*$)", "/map/imagery/", imagery);
|
|
register_tile_handler(R"(^/tiles/.*$)", "/tiles/", google_imagery);
|
|
register_tile_handler(R"(^/map/terrain/.*$)", "/map/terrain/", terrain);
|
|
}
|