Starts to implement gopher protocol and gophermap support. Heavily WIP, but you can already surf on gopherspace!

1 files changed, 80 insertions, 0 deletions

diff --git a/src/gopherclient.cpp b/src/gopherclient.cpp
new file mode 100644
index 0000000..056ecd8
--- /dev/null
+++ b/src/gopherclient.cpp
@@ -0,0 +1,80 @@
+#include "gopherclient.hpp"
+#include "ioutil.hpp"
+
+GopherClient::GopherClient(QObject *parent) : QObject(parent)
+{
+    connect(&socket, &QTcpSocket::connected, this, &GopherClient::on_connected);
+    connect(&socket, &QTcpSocket::readyRead, this, &GopherClient::on_readRead);
+    connect(&socket, &QTcpSocket::disconnected, this, &GopherClient::on_finished);
+}
+
+GopherClient::~GopherClient()
+{
+
+}
+
+bool GopherClient::startRequest(const QUrl &url)
+{
+    if(isInProgress())
+        return false;
+
+    if(url.scheme() != "gopher")
+        return false;
+
+    // Second char on the URL path denotes the Gopher type
+    // See https://tools.ietf.org/html/rfc4266
+    QString type = url.path().mid(1, 1);
+
+    mime = "application/octet-stream";
+    if(type == "") mime = "text/gophermap";
+    else if(type == "0") mime = "text/plain";
+    else if(type == "1") mime = "text/gophermap";
+    else if(type == "g") mime = "image/gif";
+    else if(type == "I") mime = "image/unknown";
+    else if(type == "h") mime = "text/html";
+    else if(type == "s") mime = "audio/unknown";
+
+    qDebug() << url << "→" << mime;
+
+    this->requested_url = url;
+    this->was_cancelled = false;
+    socket.connectToHost(url.host(), url.port(70));
+
+    return true;
+}
+
+bool GopherClient::isInProgress() const
+{
+    return socket.isOpen();
+}
+
+bool GopherClient::cancelRequest()
+{
+    was_cancelled = true;
+    socket.close();
+    body.clear();
+    return true;
+}
+
+void GopherClient::on_connected()
+{
+    auto blob = (requested_url.path().mid(2) + "\r\n").toUtf8();
+
+    IoUtil::writeAll(socket, blob);
+}
+
+void GopherClient::on_readRead()
+{
+    body.append(socket.readAll());
+}
+
+void GopherClient::on_finished()
+{
+    if(not was_cancelled)
+    {
+        emit this->requestComplete(this->body, mime);
+
+        was_cancelled = true;
+    }
+    body.clear();
+}