4 files changed, 225 insertions, 0 deletions
diff --git a/src/irc/irc_client.cpp b/src/irc/irc_client.cpp
new file mode 100644
index 0000000..83d1b0d
--- /dev/null
+++ b/src/irc/irc_client.cpp
@@ -0,0 +1,72 @@
+#include <irc/irc_client.hpp>
+#include <irc/irc_message.hpp>
+
+#include <iostream>
+#include <stdexcept>
+
+IrcClient::IrcClient()
+{
+  std::cout << "IrcClient()" << std::endl;
+}
+
+IrcClient::~IrcClient()
+{
+  std::cout << "~IrcClient()" << std::endl;
+}
+
+void IrcClient::on_connected()
+{
+}
+
+void IrcClient::on_connection_close()
+{
+  std::cout << "Connection closed by remote server." << std::endl;
+  this->close();
+}
+
+void IrcClient::parse_in_buffer()
+{
+  while (true)
+    {
+      auto pos = this->in_buf.find("\r\n");
+      if (pos == std::string::npos)
+        break ;
+      IrcMessage message(this->in_buf.substr(0, pos));
+      this->in_buf = this->in_buf.substr(pos + 2, std::string::npos);
+      std::cout << message << std::endl;
+    }
+}
+
+void IrcClient::send_message(IrcMessage&& message)
+{
+  std::string res;
+  if (!message.prefix.empty())
+    res += ":" + std::move(message.prefix) + " ";
+  res += std::move(message.command);
+  for (const std::string& arg: message.arguments)
+    {
+      if (arg.find(" ") != std::string::npos)
+        {
+          res += " :" + arg;
+          break;
+        }
+      res += " " + arg;
+    }
+  res += "\r\n";
+  this->send_data(std::move(res));
+}
+
+void IrcClient::send_user_command(const std::string& username, const std::string& realname)
+{
+  this->send_message(IrcMessage("USER", {username, "NONE", "NONE", realname}));
+}
+
+void IrcClient::send_nick_command(const std::string& nick)
+{
+  this->send_message(IrcMessage("NICK", {nick}));
+}
+
+void IrcClient::send_join_command(const std::string& chan_name)
+{
+  this->send_message(IrcMessage("JOIN", {chan_name}));
+}
diff --git a/src/irc/irc_client.hpp b/src/irc/irc_client.hpp
new file mode 100644
index 0000000..e380f5b
--- /dev/null
+++ b/src/irc/irc_client.hpp
@@ -0,0 +1,60 @@
+#ifndef IRC_CLIENT_INCLUDED
+# define IRC_CLIENT_INCLUDED
+
+#include <irc/irc_message.hpp>
+
+#include <network/socket_handler.hpp>
+
+#include <string>
+
+/**
+ * Represent one IRC client, i.e. an endpoint connected to a single IRC
+ * server, through a TCP socket, receiving and sending commands to it.
+ *
+ * TODO: TLS support, maybe, but that's not high priority
+ */
+class IrcClient: public SocketHandler
+{
+public:
+  explicit IrcClient();
+  ~IrcClient();
+  /**
+   * Called when successfully connected to the server
+   */
+  void on_connected();
+  /**
+   * Close the connection, remove us from the poller
+   */
+  void on_connection_close();
+  /**
+   * Parse the data we have received so far and try to get one or more
+   * complete messages from it.
+   */
+  void parse_in_buffer();
+  /**
+   * Serialize the given message into a line, and send that into the socket
+   * (actually, into our out_buf and signal the poller that we want to wach
+   * for send events to be ready)
+   */
+  void send_message(IrcMessage&& message);
+  /**
+   * Send the USER irc command
+   */
+  void send_user_command(const std::string& username, const std::string& realname);
+  /**
+   * Send the NICK irc command
+   */
+  void send_nick_command(const std::string& username);
+  /**
+   * Send the JOIN irc command
+   */
+  void send_join_command(const std::string& chan_name);
+
+private:
+  IrcClient(const IrcClient&) = delete;
+  IrcClient(IrcClient&&) = delete;
+  IrcClient& operator=(const IrcClient&) = delete;
+  IrcClient& operator=(IrcClient&&) = delete;
+};
+
+#endif // IRC_CLIENT_INCLUDED
diff --git a/src/irc/irc_message.cpp b/src/irc/irc_message.cpp
new file mode 100644
index 0000000..18fa3ec
--- /dev/null
+++ b/src/irc/irc_message.cpp
@@ -0,0 +1,65 @@
+#include <irc/irc_message.hpp>
+#include <iostream>
+
+IrcMessage::IrcMessage(std::string&& line)
+{
+  std::string::size_type pos;
+
+  // optional prefix
+  if (line[0] == ':')
+    {
+      pos = line.find(" ");
+      this->prefix = line.substr(1, pos);
+      line = line.substr(pos + 1, std::string::npos);
+    }
+  // command
+  pos = line.find(" ");
+  this->command = line.substr(0, pos);
+  line = line.substr(pos + 1, std::string::npos);
+  // arguments
+  do
+    {
+      if (line[0] == ':')
+        {
+          this->arguments.emplace_back(line.substr(1, std::string::npos));
+          break ;
+        }
+      pos = line.find(" ");
+      this->arguments.emplace_back(line.substr(0, pos));
+      line = line.substr(pos + 1, std::string::npos);
+    } while (pos != std::string::npos);
+}
+
+IrcMessage::IrcMessage(std::string&& prefix,
+                       std::string&& command,
+                       std::vector<std::string>&& args):
+  prefix(std::move(prefix)),
+  command(std::move(command)),
+  arguments(std::move(args))
+{
+}
+
+IrcMessage::IrcMessage(std::string&& command,
+                       std::vector<std::string>&& args):
+  prefix(),
+  command(std::move(command)),
+  arguments(std::move(args))
+{
+}
+
+IrcMessage::~IrcMessage()
+{
+}
+
+std::ostream& operator<<(std::ostream& os, const IrcMessage& message)
+{
+  os << "IrcMessage";
+  os << "[" << message.command << "]";
+  for (const std::string& arg: message.arguments)
+    {
+      os << "{" << arg << "}";
+    }
+  if (!message.prefix.empty())
+    os << "(from: " << message.prefix << ")";
+  return os;
+}
diff --git a/src/irc/irc_message.hpp b/src/irc/irc_message.hpp
new file mode 100644
index 0000000..a0bd772
--- /dev/null
+++ b/src/irc/irc_message.hpp
@@ -0,0 +1,28 @@
+#ifndef IRC_MESSAGE_INCLUDED
+# define IRC_MESSAGE_INCLUDED
+
+#include <vector>
+#include <string>
+#include <ostream>
+
+class IrcMessage
+{
+public:
+  explicit IrcMessage(std::string&& line);
+  explicit IrcMessage(std::string&& prefix, std::string&& command, std::vector<std::string>&& args);
+  explicit IrcMessage(std::string&& command, std::vector<std::string>&& args);
+  ~IrcMessage();
+
+  std::string prefix;
+  std::string command;
+  std::vector<std::string> arguments;
+
+  IrcMessage(const IrcMessage&) = delete;
+  IrcMessage(IrcMessage&&) = delete;
+  IrcMessage& operator=(const IrcMessage&) = delete;
+  IrcMessage& operator=(IrcMessage&&) = delete;
+};
+
+std::ostream& operator<<(std::ostream& os, const IrcMessage& message);
+
+#endif // IRC_MESSAGE_INCLUDED