replaced boost::asio with curlpp

CMakeLists.txt

@@ -2,11 +2,16 @@ cmake_minimum_required (VERSION 3.7)
 include(GNUInstallDirs)
 
 project (rss2mastodon
-         VERSION 0.1.8
+         VERSION 0.2.0
          LANGUAGES CXX
 )
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wall")
+
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FindCURL)
+find_package(CURL REQUIRED)
 
 add_executable(rss2mastodon src/rss2mastodon.cpp src/http.cpp)
-target_link_libraries(rss2mastodon mastodon-cpp boost_system boost_filesystem ssl crypto pthread)
+target_link_libraries(rss2mastodon mastodon-cpp boost_system boost_filesystem ssl crypto ${CURL_LIBRARIES} curlpp)
 install(TARGETS rss2mastodon DESTINATION ${CMAKE_INSTALL_BINDIR})

README.md

@@ -10,6 +10,8 @@ Use at your own risk.
  * C++ compiler (tested: gcc 6.4, clang 5.0)
  * [cmake](https://cmake.org/) (tested: 3.9.6)
  * [boost](http://www.boost.org/) (tested: 1.63.0)
+ * [libcurl](https://curl.haxx.se/) (tested: 7.58.0)
+ * [curlpp](http://www.curlpp.org/) (tested: 0.8.1)
  * [mastodon-cpp](https://github.com/tastytea/mastodon-cpp) (at least: 0.2.0)
 
 ## Get sourcecode

src/http.cpp

@@ -20,133 +20,43 @@
 #include <istream>
 #include <ostream>
 #include <sstream>
-#include <boost/asio.hpp>
-#include <boost/asio/ssl.hpp>
+#include <curlpp/cURLpp.hpp>
+#include <curlpp/Easy.hpp>
+#include <curlpp/Options.hpp>
+#include <curlpp/Exception.hpp>
 #include "rss2mastodon.hpp"
 
 using std::string;
 using std::cerr;
 
-using boost::asio::ip::tcp;
-namespace ssl = boost::asio::ssl;
-typedef ssl::stream<tcp::socket> ssl_socket;
+namespace curlopts = curlpp::options;
 
-const std::uint16_t http_get(const string &host, const string &path, string &answer, const string &useragent)
+const std::uint16_t http_get(const string &feedurl, string &answer, const string &useragent)
 {
-    ssl::context ctx(ssl::context::tlsv12);
-    boost::asio::io_service io_service;
-    tcp::resolver resolver(io_service);
-    ssl::stream<boost::asio::ip::tcp::socket> socket(io_service, ctx);
-
-    ctx.set_options(ssl::context::tlsv12 | ssl::context::tlsv11 |
-                    ssl::context::no_sslv3 | ssl::context::no_sslv2 |
-                    ssl::context::no_tlsv1);
-    ctx.set_default_verify_paths();
-
     try
     {
-        tcp::resolver::query query(host, "https");
-        tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
-        boost::asio::connect(socket.lowest_layer(), endpoint_iterator);
-        socket.lowest_layer().set_option(tcp::no_delay(true));
-    }
-    catch (const std::exception &e)
-    {
-        cerr << "ERROR: " << e.what() << "\n";
-        return 16;
-    }
-
-    try
-    {
-        // Server Name Indication (SNI)
-        SSL_set_tlsext_host_name(socket.native_handle(), host.c_str());
-
-        socket.set_verify_mode(ssl::verify_peer);
-        socket.set_verify_callback(ssl::rfc2818_verification(host));
-
-        socket.handshake(ssl_socket::client);
-    }
-    catch (const std::exception &e)
-    {
-        cerr << "ERROR: " << e.what() << "\n";
-        return 17;
-    }
-
-    try
-    {
-        boost::asio::streambuf request;
-        std::ostream request_stream(&request);
-        request_stream << "GET " << path;
-        request_stream << " HTTP/1.0\r\n";
-        request_stream << "Host: " << host << "\r\n";
-        request_stream << "Accept: */*\r\n";
-        request_stream << "Connection: close\r\n";
-        if (useragent.empty())
-        {
-            request_stream << "\r\n";
-        }
-        else
-        {
-            request_stream << "User-Agent: " << useragent << "\r\n\r\n";
-        }
-
-        boost::asio::write(socket, request);
-
-        boost::asio::streambuf response;
-        boost::asio::read_until(socket, response, "\r\n");
-
-        // Check that response is OK.
-        std::istream response_stream(&response);
-        std::string http_version;
-        std::uint16_t status_code;
-        std::string status_message;
-        response_stream >> http_version;
-        response_stream >> status_code;
-        std::getline(response_stream, status_message);
-        if (!response_stream || http_version.substr(0, 5) != "HTTP/")
-        {
-            cerr << "ERROR: Invalid response from server\n";
-            cerr << "Response was: " << http_version << " " << status_code
-                    << " " << status_message << '\n';
-            return 18;
-        }
-        if (status_code != 200)
-        {
-            cerr << "ERROR: Response returned with status code "
-                    << status_code << ": " << status_message << "\n";
-            return status_code;
-        }
-
-        // Read headers
-        boost::asio::read_until(socket, response, "\r\n\r\n");
-        std::string header;
-        // cerr << "Header: \n";
-        while (std::getline(response_stream, header) && header != "\r")
-        {
-            // cerr << header << '\n';
-        }
-
-        // Read body
-        boost::system::error_code error;
-        answer = "";
         std::ostringstream oss;
-        while (boost::asio::read(socket, response,
-                                 boost::asio::transfer_at_least(1), error))
+        curlpp::Easy request;
+        request.setOpt<curlopts::Url>(feedurl);
+        request.setOpt<curlopts::UserAgent>(useragent);
+        request.setOpt<curlopts::HttpHeader>(
         {
-            oss << &response;
-        }
-        if (error != boost::asio::error::eof)
-        {
-            // TODO: Find out why the "short read" error occurs
-            //throw boost::system::system_error(error);
-            //cerr << "ERROR: " << error.message() << '\n';
-        }
+            "Connection: close",
+        });
+        
+        oss << request;
         answer = oss.str();
-        //cerr << "Answer from server: " << oss.str() << '\n';
+
+        return 0;
     }
-    catch (const std::exception &e)
+    catch (curlpp::RuntimeError &e)
     {
-        cerr << "Exception: " << e.what() << "\n";
+        cerr << "RUNTIME ERROR: " << e.what() << std::endl;
+        return 0xffff;
+    }
+    catch (curlpp::LogicError &e)
+    {
+        cerr << "LOGIC ERROR: " << e.what() << std::endl;
         return 0xffff;
     }
 

src/rss2mastodon.cpp

@@ -201,16 +201,12 @@ int main(int argc, char *argv[])
     std::uint16_t ret;
 
     read_config(config, profile, instance, access_token, feedurl);
-    std::size_t pos = 0;
-    pos = feedurl.find("//") + 2;
-    const string hostname = feedurl.substr(pos, feedurl.find('/', pos) - pos);
-    const string path = feedurl.substr(pos + hostname.size());
 
     string answer;
     string last_entry = config.get(profile + ".last_entry", "");
     std::vector<string> entries;
     //FIXME: User-Agent
-    ret = http_get(hostname, path, answer, "rss2mastodon/experimental");
+    ret = http_get(feedurl, answer, "rss2mastodon/experimental");
     if (ret != 0)
     {
         return ret;

src/rss2mastodon.hpp

@@ -13,7 +13,7 @@ void read_config(pt::ptree &config, const string &profile, string &instance, str
 std::vector<string> parse_website(const string &profile, const string &xml);
 
 // http.cpp
-const std::uint16_t http_get(const string &host, const string &path,
+const std::uint16_t http_get(const string &feedurl,
                              string &answer, const string &useragent = "");
 
 #endif // RSS2MASTODON_HPP