IRCClient: Connect to IRC server URL specified in command line argument

The IRCClient application can now connect to a specified IRC server using
a URL with `irc://` protocol as a command line argument.

Applications/IRCClient/IRCAppWindow.cpp

@@ -49,8 +49,8 @@ IRCAppWindow& IRCAppWindow::the()
     return *s_the;
 }
 
-IRCAppWindow::IRCAppWindow()
-    : m_client(IRCClient::construct())
+IRCAppWindow::IRCAppWindow(String server, int port)
+    : m_client(IRCClient::construct(server, port))
 {
     ASSERT(!s_the);
     s_the = this;

Applications/IRCClient/IRCAppWindow.h

@@ -41,7 +41,7 @@ public:
     void set_active_window(IRCWindow&);
 
 private:
-    IRCAppWindow();
+    IRCAppWindow(String server, int port);
 
     void setup_client();
     void setup_actions();

Applications/IRCClient/IRCClient.cpp

@@ -67,7 +67,7 @@ enum IRCNumeric {
     ERR_NICKNAMEINUSE = 433,
 };
 
-IRCClient::IRCClient()
+IRCClient::IRCClient(String server, int port)
     : m_nickname("seren1ty")
     , m_client_window_list_model(IRCWindowListModel::create(*this))
     , m_log(IRCLogBuffer::create())
@@ -76,8 +76,14 @@ IRCClient::IRCClient()
     struct passwd* user_pw = getpwuid(getuid());
     m_socket = Core::TCPSocket::construct(this);
     m_nickname = m_config->read_entry("User", "Nickname", String::format("%s_seren1ty", user_pw->pw_name));
-    m_hostname = m_config->read_entry("Connection", "Server", "");
-    m_port = m_config->read_num_entry("Connection", "Port", 6667);
+
+    if (server.is_empty()) {
+        m_hostname = m_config->read_entry("Connection", "Server", "");
+        m_port = m_config->read_num_entry("Connection", "Port", 6667);
+    } else {
+        m_hostname = server;
+        m_port = port ? port : 6667;
+    }
 
     m_show_join_part_messages = m_config->read_bool_entry("Messaging", "ShowJoinPartMessages", 1);
     m_show_nick_change_messages = m_config->read_bool_entry("Messaging", "ShowNickChangeMessages", 1);

Applications/IRCClient/IRCClient.h

@@ -138,7 +138,7 @@ public:
     void add_server_message(const String&, Color = Color::Black);
 
 private:
-    IRCClient();
+    IRCClient(String server, int port);
 
     struct Message {
         String prefix;

Applications/IRCClient/main.cpp

@@ -32,7 +32,7 @@
 
 int main(int argc, char** argv)
 {
-    if (pledge("stdio inet dns unix shared_buffer cpath rpath fattr", nullptr) < 0) {
+    if (pledge("stdio inet dns unix shared_buffer cpath rpath fattr wpath cpath", nullptr) < 0) {
         perror("pledge");
         return 1;
     }
@@ -44,12 +44,35 @@ int main(int argc, char** argv)
 
     GUI::Application app(argc, argv);
 
-    if (pledge("stdio inet dns unix shared_buffer rpath", nullptr) < 0) {
+    if (pledge("stdio inet dns unix shared_buffer rpath wpath cpath", nullptr) < 0) {
         perror("pledge");
         return 1;
     }
 
-    auto app_window = IRCAppWindow::construct();
+    URL url = "";
+    if (app.args().size() >= 1) {
+        url = URL::create_with_url_or_path(app.args()[0]);
+
+        if (url.protocol().to_lowercase() == "ircs") {
+            fprintf(stderr, "Secure IRC over SSL/TLS (ircs) is not supported\n");
+            return 1;
+        }
+
+        if (url.protocol().to_lowercase() != "irc") {
+            fprintf(stderr, "Unsupported protocol\n");
+            return 1;
+        }
+
+        if (url.host().is_empty()) {
+            fprintf(stderr, "Invalid URL\n");
+            return 1;
+        }
+
+        if (!url.port() || url.port() == 80)
+            url.set_port(6667);
+    }
+
+    auto app_window = IRCAppWindow::construct(url.host(), url.port());
     app_window->show();
     return app.exec();
 }