SetupActivity logic

src/activity_manager.rs

@@ -29,9 +29,8 @@ use std::path::PathBuf;
 use crate::filetransfer::FileTransferProtocol;
 use crate::host::Localhost;
 use crate::ui::activities::{
-    auth_activity::AuthActivity,
-    filetransfer_activity::FileTransferActivity, filetransfer_activity::FileTransferParams,
-    Activity,
+    auth_activity::AuthActivity, filetransfer_activity::FileTransferActivity,
+    filetransfer_activity::FileTransferParams, setup_activity::SetupActivity, Activity,
 };
 use crate::ui::context::Context;
 
@@ -45,6 +44,7 @@ use std::time::Duration;
 pub enum NextActivity {
     Authentication,
     FileTransfer,
+    SetupActivity,
 }
 
 /// ### ActivityManager
@@ -60,10 +60,7 @@ impl ActivityManager {
     /// ### new
     ///
     /// Initializes a new Activity Manager
-    pub fn new(
-        local_dir: &PathBuf,
-        interval: Duration,
-    ) -> Result<ActivityManager, ()> {
+    pub fn new(local_dir: &PathBuf, interval: Duration) -> Result<ActivityManager, ()> {
         // Prepare Context
         let host: Localhost = match Localhost::new(local_dir.clone()) {
             Ok(h) => h,
@@ -109,6 +106,7 @@ impl ActivityManager {
                 Some(activity) => match activity {
                     NextActivity::Authentication => self.run_authentication(),
                     NextActivity::FileTransfer => self.run_filetransfer(),
+                    NextActivity::SetupActivity => self.run_setup(),
                 },
                 None => break, // Exit
             }
@@ -126,13 +124,13 @@ impl ActivityManager {
     /// Returns the next activity to run
     fn run_authentication(&mut self) -> Option<NextActivity> {
         // Prepare activity
-        let mut activity: AuthActivity = AuthActivity::new();
+        let mut activity: AuthActivity = AuthActivity::default();
         // Prepare result
         let result: Option<NextActivity>;
         // Get context
         let ctx: Context = match self.context.take() {
             Some(ctx) => ctx,
-            None => return None
+            None => return None,
         };
         // Create activity
         activity.on_create(ctx);
@@ -145,6 +143,11 @@ impl ActivityManager {
                 result = None;
                 break;
             }
+            if activity.setup {
+                // User requested activity
+                result = Some(NextActivity::SetupActivity);
+                break;
+            }
             if activity.submit {
                 // User submitted, set next activity
                 result = Some(NextActivity::FileTransfer);
@@ -189,7 +192,7 @@ impl ActivityManager {
         // Get context
         let ctx: Context = match self.context.take() {
             Some(ctx) => ctx,
-            None => return None
+            None => return None,
         };
         // Create activity
         activity.on_create(ctx);
@@ -214,4 +217,35 @@ impl ActivityManager {
         self.context = activity.on_destroy();
         result
     }
+
+    /// ### run_setup
+    ///
+    /// `SetupActivity` run loop.
+    /// Returns when activity terminates.
+    /// Returns the next activity to run
+    fn run_setup(&mut self) -> Option<NextActivity> {
+        // Prepare activity
+        let mut activity: SetupActivity = SetupActivity::default();
+        // Get context
+        let ctx: Context = match self.context.take() {
+            Some(ctx) => ctx,
+            None => return None,
+        };
+        // Create activity
+        activity.on_create(ctx);
+        loop {
+            // Draw activity
+            activity.on_draw();
+            // Check if activity has terminated
+            if activity.quit {
+                break;
+            }
+            // Sleep for ticks
+            sleep(self.interval);
+        }
+        // Destroy activity
+        self.context = activity.on_destroy();
+        // This activity always returns to AuthActivity
+        Some(NextActivity::Authentication)
+    }
 }

src/ui/activities/mod.rs

@@ -30,6 +30,7 @@ use super::context::Context;
 // Activities
 pub mod auth_activity;
 pub mod filetransfer_activity;
+pub mod setup_activity;
 
 // Activity trait
 

src/ui/activities/setup_activity/callbacks.rs

@@ -0,0 +1,131 @@
+//! ## SetupActivity
+//!
+//! `setup_activity` is the module which implements the Setup activity, which is the activity to
+//! work on termscp configuration
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+// Locals
+use super::{Color, Popup, SetupActivity};
+// Ext
+use std::env;
+
+impl SetupActivity {
+    /// ### callback_nothing_to_do
+    ///
+    /// Self titled
+    pub(super) fn callback_nothing_to_do(&mut self) {}
+
+    /// ### callback_save_config_and_quit
+    ///
+    /// Save configuration and quit
+    pub(super) fn callback_save_config_and_quit(&mut self) {
+        match self.save_config() {
+            Ok(_) => self.quit = true, // Quit after successful save
+            Err(err) => self.popup = Some(Popup::Alert(Color::Red, err)), // Show error and don't quit
+        }
+    }
+
+    /// ### callback_save_config
+    ///
+    /// Save configuration callback
+    pub(super) fn callback_save_config(&mut self) {
+        if let Err(err) = self.save_config() {
+            self.popup = Some(Popup::Alert(Color::Red, err)); // Show save error
+        }
+    }
+
+    /// ### callback_reset_config_changes
+    ///
+    /// Reset config changes callback
+    pub(super) fn callback_reset_config_changes(&mut self) {
+        if let Err(err) = self.reset_config_changes() {
+            self.popup = Some(Popup::Alert(Color::Red, err)); // Show reset error
+        }
+    }
+
+    /// ### callback_delete_ssh_key
+    ///
+    /// Callback for performing the delete of a ssh key
+    pub(super) fn callback_delete_ssh_key(&mut self) {
+        // Get key
+        if let Some(config_cli) = self.config_cli.as_mut() {
+            let key: Option<String> = match config_cli.iter_ssh_keys().nth(self.ssh_key_idx) {
+                Some(k) => Some(k.clone()),
+                None => None,
+            };
+            if let Some(key) = key {
+                match config_cli.get_ssh_key(&key) {
+                    Ok(opt) => {
+                        if let Some((host, username, _)) = opt {
+                            if let Err(err) = self.delete_ssh_key(host.as_str(), username.as_str())
+                            {
+                                // Report error
+                                self.popup = Some(Popup::Alert(Color::Red, err));
+                            }
+                        }
+                    }
+                    Err(err) => {
+                        self.popup = Some(Popup::Alert(
+                            Color::Red,
+                            format!("Could not get ssh key \"{}\": {}", key, err),
+                        ))
+                    } // Report error
+                }
+            }
+        }
+    }
+
+    /// ### callback_new_ssh_key
+    ///
+    /// Create a new ssh key with provided parameters
+    pub(super) fn callback_new_ssh_key(&mut self, host: String, username: String) {
+        if let Some(cli) = self.config_cli.as_ref() {
+            // Prepare text editor
+            env::set_var("EDITOR", cli.get_text_editor());
+            let placeholder: String = format!("# Type private SSH key for {}@{}", username, host);
+            // Write key to file
+            match edit::edit(placeholder.as_bytes()) {
+                Ok(rsa_key) => {
+                    // Remove placeholder from `rsa_key`
+                    let rsa_key: String = rsa_key.as_str().replace(placeholder.as_str(), "");
+                    // Add key
+                    if let Err(err) =
+                        self.add_ssh_key(host.as_str(), username.as_str(), rsa_key.as_str())
+                    {
+                        self.popup = Some(Popup::Alert(
+                            Color::Red,
+                            format!("Could not create new private key: {}", err),
+                        ))
+                    }
+                }
+                Err(err) => {
+                    // Report error
+                    self.popup = Some(Popup::Alert(
+                        Color::Red,
+                        format!("Could not write private key to file: {}", err),
+                    ))
+                }
+            }
+        }
+    }
+}

src/ui/activities/setup_activity/config.rs

@@ -0,0 +1,165 @@
+//! ## SetupActivity
+//!
+//! `setup_activity` is the module which implements the Setup activity, which is the activity to
+//! work on termscp configuration
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+// Locals
+use super::{ConfigClient, Popup, SetupActivity};
+use crate::system::environment;
+// Ext
+use std::env;
+use std::path::PathBuf;
+
+impl SetupActivity {
+    /// ### init_config_dir
+    ///
+    /// Initialize configuration directory
+    pub(super) fn init_config_client(&mut self) {
+        match environment::init_config_dir() {
+            Ok(config_dir) => match config_dir {
+                Some(config_dir) => {
+                    // Get paths
+                    let (config_file, ssh_dir): (PathBuf, PathBuf) =
+                        environment::get_config_paths(config_dir.as_path());
+                    // Create config client
+                    match ConfigClient::new(config_file.as_path(), ssh_dir.as_path()) {
+                        Ok(cli) => self.config_cli = Some(cli),
+                        Err(err) => {
+                            self.popup = Some(Popup::Fatal(format!(
+                                "Could not initialize configuration client: {}",
+                                err
+                            )))
+                        }
+                    }
+                }
+                None => {
+                    self.popup = Some(Popup::Fatal(format!(
+                        "No configuration directory is available on your system"
+                    )))
+                }
+            },
+            Err(err) => {
+                self.popup = Some(Popup::Fatal(format!(
+                    "Could not initialize configuration directory: {}",
+                    err
+                )))
+            }
+        }
+    }
+
+    /// ### save_config
+    ///
+    /// Save configuration
+    pub(super) fn save_config(&mut self) -> Result<(), String> {
+        match &self.config_cli {
+            Some(cli) => match cli.write_config() {
+                Ok(_) => Ok(()),
+                Err(err) => Err(format!("Could not save configuration: {}", err)),
+            },
+            None => Ok(()),
+        }
+    }
+
+    /// ### reset_config_changes
+    ///
+    /// Reset configuration changes; pratically read config from file, overwriting any change made
+    /// since last write action
+    pub(super) fn reset_config_changes(&mut self) -> Result<(), String> {
+        match self.config_cli.as_mut() {
+            Some(cli) => match cli.read_config() {
+                Ok(_) => Ok(()),
+                Err(err) => Err(format!("Could not restore configuration: {}", err)),
+            },
+            None => Ok(()),
+        }
+    }
+
+    /// ### delete_ssh_key
+    ///
+    /// Delete ssh key from config cli
+    pub(super) fn delete_ssh_key(&mut self, host: &str, username: &str) -> Result<(), String> {
+        match self.config_cli.as_mut() {
+            Some(cli) => match cli.del_ssh_key(host, username) {
+                Ok(_) => Ok(()),
+                Err(err) => Err(format!(
+                    "Could not delete ssh key \"{}@{}\": {}",
+                    host, username, err
+                )),
+            },
+            None => Ok(()),
+        }
+    }
+
+    /// ### edit_ssh_key
+    ///
+    /// Edit selected ssh key
+    pub(super) fn edit_ssh_key(&mut self) -> Result<(), String> {
+        match self.config_cli.as_ref() {
+            Some(cli) => {
+                // Set text editor
+                env::set_var("EDITOR", cli.get_text_editor());
+                // Check if key exists
+                match cli.iter_ssh_keys().nth(self.ssh_key_idx) {
+                    Some(key) => {
+                        // Get key path
+                        match cli.get_ssh_key(key) {
+                            Ok(ssh_key) => match ssh_key {
+                                None => Ok(()),
+                                Some((_, _, key_path)) => match edit::edit_file(key_path.as_path())
+                                {
+                                    Ok(_) => Ok(()),
+                                    Err(err) => Err(format!("Could not edit ssh key: {}", err)),
+                                },
+                            },
+                            Err(err) => Err(format!("Could not read ssh key: {}", err)),
+                        }
+                    }
+                    None => Ok(()),
+                }
+            }
+            None => Ok(()),
+        }
+    }
+
+    /// ### add_ssh_key
+    ///
+    /// Add provided ssh key to config client
+    pub(super) fn add_ssh_key(
+        &mut self,
+        host: &str,
+        username: &str,
+        rsa_key: &str,
+    ) -> Result<(), String> {
+        match self.config_cli.as_mut() {
+            Some(cli) => {
+                // Add key to client
+                match cli.add_ssh_key(host, username, rsa_key) {
+                    Ok(_) => Ok(()),
+                    Err(err) => Err(format!("Could not add SSH key: {}", err)),
+                }
+            }
+            None => Ok(()),
+        }
+    }
+}

src/ui/activities/setup_activity/input.rs

@@ -0,0 +1,470 @@
+//! ## SetupActivity
+//!
+//! `setup_activity` is the module which implements the Setup activity, which is the activity to
+//! work on termscp configuration
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+// Locals
+use super::{
+    InputEvent, OnChoiceCallback, Popup, QuitDialogOption, SetupActivity, SetupTab,
+    UserInterfaceInputField, YesNoDialogOption,
+};
+use crate::filetransfer::FileTransferProtocol;
+// Ext
+use crossterm::event::{KeyCode, KeyModifiers};
+use std::path::PathBuf;
+use tui::style::Color;
+
+impl SetupActivity {
+    /// ### handle_input_event
+    ///
+    /// Handle input event, based on current input mode
+    pub(super) fn handle_input_event(&mut self, ev: &InputEvent) {
+        let popup: Option<Popup> = match &self.popup {
+            Some(ptype) => Some(ptype.clone()),
+            None => None,
+        };
+        match &self.popup {
+            Some(_) => self.handle_input_event_popup(ev, popup.unwrap()),
+            None => self.handle_input_event_forms(ev),
+        }
+    }
+
+    /// ### handle_input_event_forms
+    ///
+    /// Handle input event when popup is not visible.
+    /// InputEvent is handled based on current tab
+    fn handle_input_event_forms(&mut self, ev: &InputEvent) {
+        // Match tab
+        match &self.tab {
+            SetupTab::SshConfig => self.handle_input_event_forms_ssh_config(ev),
+            SetupTab::UserInterface(_) => self.handle_input_event_forms_ui(ev),
+        }
+    }
+
+    /// ### handle_input_event_forms_ssh_config
+    ///
+    /// Handle input event when in ssh config tab
+    fn handle_input_event_forms_ssh_config(&mut self, ev: &InputEvent) {
+        // Match input event
+        if let InputEvent::Key(key) = ev {
+            // Match key code
+            match key.code {
+                KeyCode::Esc => self.popup = Some(Popup::Quit), // Prompt quit
+                KeyCode::Tab => {
+                    self.tab = SetupTab::UserInterface(UserInterfaceInputField::DefaultProtocol)
+                } // Switch tab to user interface config
+                KeyCode::Up => {
+                    if let Some(config_cli) = self.config_cli.as_ref() {
+                        // Move ssh key index up
+                        let ssh_key_size: usize = config_cli.iter_ssh_keys().count();
+                        if self.ssh_key_idx > 0 {
+                            // Decrement
+                            self.ssh_key_idx -= 1;
+                        } else {
+                            // Set ssh key index to `ssh_key_size -1`
+                            self.ssh_key_idx = ssh_key_size - 1;
+                        }
+                    }
+                }
+                KeyCode::Down => {
+                    if let Some(config_cli) = self.config_cli.as_ref() {
+                        // Move ssh key index down
+                        let ssh_key_size: usize = config_cli.iter_ssh_keys().count();
+                        if self.ssh_key_idx + 1 < ssh_key_size {
+                            // Increment index
+                            self.ssh_key_idx += 1;
+                        } else {
+                            // Wrap to 0
+                            self.ssh_key_idx = 0;
+                        }
+                    }
+                }
+                KeyCode::Delete => {
+                    // Prompt to delete selected key
+                    self.yesno_opt = YesNoDialogOption::No; // Default to no
+                    self.popup = Some(Popup::YesNo(
+                        String::from("Delete key?"),
+                        Self::callback_delete_ssh_key,
+                        Self::callback_nothing_to_do,
+                    ));
+                }
+                KeyCode::Enter => {
+                    // Edit selected key
+                    if let Err(err) = self.edit_ssh_key() {
+                        self.popup = Some(Popup::Alert(Color::Red, err)); // Report error
+                    }
+                }
+                KeyCode::Char(ch) => {
+                    // Check if <CTRL> is enabled
+                    if key.modifiers.intersects(KeyModifiers::CONTROL) {
+                        // Match char
+                        match ch {
+                            'h' | 'H' => {
+                                // Show help
+                                self.popup = Some(Popup::Help);
+                            }
+                            'n' | 'N' => {
+                                // New ssh key
+                                self.popup = Some(Popup::NewSshKey);
+                            }
+                            'r' | 'R' => {
+                                // Show reset changes dialog
+                                self.popup = Some(Popup::YesNo(
+                                    String::from("Reset changes?"),
+                                    Self::callback_reset_config_changes,
+                                    Self::callback_nothing_to_do,
+                                ));
+                            }
+                            's' | 'S' => {
+                                // Show save dialog
+                                self.popup = Some(Popup::YesNo(
+                                    String::from("Save changes to configuration?"),
+                                    Self::callback_save_config,
+                                    Self::callback_nothing_to_do,
+                                ));
+                            }
+                            _ => { /* Nothing to do */ }
+                        }
+                    }
+                }
+                _ => { /* Nothing to do */ }
+            }
+        }
+    }
+
+    /// ### handle_input_event_forms_ui
+    ///
+    /// Handle input event when in UserInterface config tab
+    fn handle_input_event_forms_ui(&mut self, ev: &InputEvent) {
+        // Get `UserInterfaceInputField`
+        let field: UserInterfaceInputField = match &self.tab {
+            SetupTab::UserInterface(field) => field.clone(),
+            _ => return,
+        };
+        // Match input event
+        if let InputEvent::Key(key) = ev {
+            // Match key code
+            match key.code {
+                KeyCode::Esc => self.popup = Some(Popup::Quit), // Prompt quit
+                KeyCode::Tab => self.tab = SetupTab::SshConfig, // Switch tab to ssh config
+                KeyCode::Backspace => {
+                    // Pop character from selected input
+                    if let Some(config_cli) = self.config_cli.as_mut() {
+                        // NOTE: replace with match if other text fields are added
+                        if matches!(field, UserInterfaceInputField::TextEditor) {
+                            // Pop from text editor
+                            let mut input: String = String::from(
+                                config_cli.get_text_editor().as_path().to_string_lossy(),
+                            );
+                            input.pop();
+                            // Update text editor value
+                            config_cli.set_text_editor(PathBuf::from(input.as_str()));
+                        }
+                    }
+                }
+                KeyCode::Left => {
+                    // Move left on fields which are tabs
+                    if let Some(config_cli) = self.config_cli.as_mut() {
+                        if matches!(field, UserInterfaceInputField::DefaultProtocol) {
+                            // Move left
+                            config_cli.set_default_protocol(
+                                match config_cli.get_default_protocol() {
+                                    FileTransferProtocol::Ftp(secure) => match secure {
+                                        true => FileTransferProtocol::Ftp(false),
+                                        false => FileTransferProtocol::Scp,
+                                    },
+                                    FileTransferProtocol::Scp => FileTransferProtocol::Sftp,
+                                    FileTransferProtocol::Sftp => FileTransferProtocol::Ftp(true), // Wrap
+                                },
+                            );
+                        }
+                    }
+                }
+                KeyCode::Right => {
+                    // Move right on fields which are tabs
+                    if let Some(config_cli) = self.config_cli.as_mut() {
+                        if matches!(field, UserInterfaceInputField::DefaultProtocol) {
+                            // Move left
+                            config_cli.set_default_protocol(
+                                match config_cli.get_default_protocol() {
+                                    FileTransferProtocol::Sftp => FileTransferProtocol::Scp,
+                                    FileTransferProtocol::Scp => FileTransferProtocol::Ftp(false),
+                                    FileTransferProtocol::Ftp(secure) => match secure {
+                                        false => FileTransferProtocol::Ftp(true),
+                                        true => FileTransferProtocol::Sftp, // Wrap
+                                    },
+                                },
+                            );
+                        }
+                    }
+                }
+                KeyCode::Up => {
+                    // Change selected field
+                    self.tab = SetupTab::UserInterface(match field {
+                        UserInterfaceInputField::TextEditor => {
+                            UserInterfaceInputField::DefaultProtocol
+                        }
+                        UserInterfaceInputField::DefaultProtocol => {
+                            UserInterfaceInputField::TextEditor
+                        } // Wrap
+                    });
+                }
+                KeyCode::Down => {
+                    // Change selected field
+                    self.tab = SetupTab::UserInterface(match field {
+                        UserInterfaceInputField::DefaultProtocol => {
+                            UserInterfaceInputField::TextEditor
+                        }
+                        UserInterfaceInputField::TextEditor => {
+                            UserInterfaceInputField::DefaultProtocol
+                        } // Wrap
+                    });
+                }
+                KeyCode::Char(ch) => {
+                    // Check if <CTRL> is enabled
+                    if key.modifiers.intersects(KeyModifiers::CONTROL) {
+                        // Match char
+                        match ch {
+                            'h' | 'H' => {
+                                // Show help
+                                self.popup = Some(Popup::Help);
+                            }
+                            'r' | 'R' => {
+                                // Show reset changes dialog
+                                self.popup = Some(Popup::YesNo(
+                                    String::from("Reset changes?"),
+                                    Self::callback_reset_config_changes,
+                                    Self::callback_nothing_to_do,
+                                ));
+                            }
+                            's' | 'S' => {
+                                // Show save dialog
+                                self.popup = Some(Popup::YesNo(
+                                    String::from("Save changes to configuration?"),
+                                    Self::callback_save_config,
+                                    Self::callback_nothing_to_do,
+                                ));
+                            }
+                            _ => { /* Nothing to do */ }
+                        }
+                    } else {
+                        // Push character to input field
+                        if let Some(config_cli) = self.config_cli.as_mut() {
+                            // NOTE: change to match if other fields are added
+                            if matches!(field, UserInterfaceInputField::TextEditor) {
+                                // Get current text editor and push character
+                                let mut input: String = String::from(
+                                    config_cli.get_text_editor().as_path().to_string_lossy(),
+                                );
+                                input.push(ch);
+                                // Update text editor value
+                                config_cli.set_text_editor(PathBuf::from(input.as_str()));
+                            }
+                        }
+                    }
+                }
+                _ => { /* Nothing to do */ }
+            }
+        }
+    }
+
+    /// ### handle_input_event_popup
+    ///
+    /// Handler for input event when popup is visible
+    fn handle_input_event_popup(&mut self, ev: &InputEvent, ptype: Popup) {
+        match ptype {
+            Popup::Alert(_, _) => self.handle_input_event_mode_popup_alert(ev),
+            Popup::Fatal(_) => self.handle_input_event_mode_popup_fatal(ev),
+            Popup::Help => self.handle_input_event_mode_popup_help(ev),
+            Popup::NewSshKey => self.handle_input_event_mode_popup_newsshkey(ev),
+            Popup::Quit => self.handle_input_event_mode_popup_quit(ev),
+            Popup::YesNo(_, yes_cb, no_cb) => {
+                self.handle_input_event_mode_popup_yesno(ev, yes_cb, no_cb)
+            }
+        }
+    }
+
+    /// ### handle_input_event_mode_popup_alert
+    ///
+    /// Handle input event when the input mode is popup, and popup type is alert
+    fn handle_input_event_mode_popup_alert(&mut self, ev: &InputEvent) {
+        // Only enter should be allowed here
+        if let InputEvent::Key(key) = ev {
+            if matches!(key.code, KeyCode::Esc | KeyCode::Enter) {
+                self.popup = None; // Hide popup
+            }
+        }
+    }
+
+    /// ### handle_input_event_mode_popup_fatal
+    ///
+    /// Handle input event when the input mode is popup, and popup type is fatal
+    fn handle_input_event_mode_popup_fatal(&mut self, ev: &InputEvent) {
+        // Only enter should be allowed here
+        if let InputEvent::Key(key) = ev {
+            if matches!(key.code, KeyCode::Esc | KeyCode::Enter) {
+                // Quit after acknowelding fatal error
+                self.quit = true;
+            }
+        }
+    }
+
+    /// ### handle_input_event_mode_popup_help
+    ///
+    /// Input event handler for popup help
+    fn handle_input_event_mode_popup_help(&mut self, ev: &InputEvent) {
+        // If enter, close popup
+        if let InputEvent::Key(key) = ev {
+            if matches!(key.code, KeyCode::Esc | KeyCode::Enter) {
+                self.popup = None; // Hide popup
+            }
+        }
+    }
+
+    /// ### handle_input_event_mode_popup_newsshkey
+    ///
+    /// Handle input events for `Popup::NewSshKey`
+    fn handle_input_event_mode_popup_newsshkey(&mut self, ev: &InputEvent) {
+        // If enter, close popup, otherwise push chars to input
+        if let InputEvent::Key(key) = ev {
+            match key.code {
+                KeyCode::Esc => {
+                    // Abort input
+                    // Clear buffer
+                    self.clear_user_input();
+                    // Hide popup
+                    self.popup = None;
+                }
+                KeyCode::Enter => {
+                    // Submit
+                    let address: String = self.user_input.get(0).unwrap().to_string();
+                    let username: String = self.user_input.get(1).unwrap().to_string();
+                    // Clear buffer
+                    self.clear_user_input();
+                    // Close popup BEFORE CALLBACKS!!! Callback can then overwrite this, clever uh?
+                    self.popup = None;
+                    // Reset user ptr
+                    self.user_input_ptr = 0;
+                    // Call cb
+                    self.callback_new_ssh_key(address, username);
+                }
+                KeyCode::Up => {
+                    // Move ptr up, or to maximum index (1)
+                    self.user_input_ptr = match self.user_input_ptr {
+                        1 => 0,
+                        _ => 1, // Wrap
+                    };
+                }
+                KeyCode::Down => {
+                    // Move ptr down, or to minimum index (0)
+                    self.user_input_ptr = match self.user_input_ptr {
+                        0 => 1,
+                        _ => 0, // Wrap
+                    }
+                }
+                KeyCode::Char(ch) => {
+                    // Get current input
+                    let input: &mut String =
+                        self.user_input.get_mut(self.user_input_ptr).unwrap();
+                    input.push(ch);
+                }
+                KeyCode::Backspace => {
+                    let input: &mut String =
+                        self.user_input.get_mut(self.user_input_ptr).unwrap();
+                    input.pop();
+                }
+                _ => { /* Nothing to do */ }
+            }
+        }
+    }
+
+    /// ### handle_input_event_mode_popup_quit
+    ///
+    /// Handle input events for `Popup::Quit`
+    fn handle_input_event_mode_popup_quit(&mut self, ev: &InputEvent) {
+        if let InputEvent::Key(key) = ev {
+            match key.code {
+                KeyCode::Esc => {
+                    // Hide popup
+                    self.popup = None;
+                }
+                KeyCode::Enter => {
+                    // Perform enter, based on current choice
+                    match self.quit_opt {
+                        QuitDialogOption::Cancel => self.popup = None, // Hide popup
+                        QuitDialogOption::DontSave => self.quit = true, // Just quit
+                        QuitDialogOption::Save => self.callback_save_config_and_quit(), // Save and quit
+                    }
+                }
+                KeyCode::Right => {
+                    // Change option
+                    self.quit_opt = match self.quit_opt {
+                        QuitDialogOption::Save => QuitDialogOption::DontSave,
+                        QuitDialogOption::DontSave => QuitDialogOption::Cancel,
+                        QuitDialogOption::Cancel => QuitDialogOption::Save, // Wrap
+                    }
+                }
+                KeyCode::Left => {
+                    // Change option
+                    self.quit_opt = match self.quit_opt {
+                        QuitDialogOption::Cancel => QuitDialogOption::DontSave,
+                        QuitDialogOption::DontSave => QuitDialogOption::Save,
+                        QuitDialogOption::Save => QuitDialogOption::Cancel, // Wrap
+                    }
+                }
+                _ => { /* Nothing to do */ }
+            }
+        }
+    }
+
+    /// ### handle_input_event_mode_popup_yesno
+    ///
+    /// Input event handler for popup alert
+    pub(super) fn handle_input_event_mode_popup_yesno(
+        &mut self,
+        ev: &InputEvent,
+        yes_cb: OnChoiceCallback,
+        no_cb: OnChoiceCallback,
+    ) {
+        // If enter, close popup, otherwise move dialog option
+        if let InputEvent::Key(key) = ev {
+            match key.code {
+                KeyCode::Enter => {
+                    // Hide popup BEFORE CALLBACKS!!! Callback can then overwrite this, clever uh?
+                    self.popup = None;
+                    // Check if user selected yes or not
+                    match self.yesno_opt {
+                        YesNoDialogOption::No => no_cb(self),
+                        YesNoDialogOption::Yes => yes_cb(self),
+                    }
+                    // Reset choice option to yes
+                    self.yesno_opt = YesNoDialogOption::Yes;
+                }
+                KeyCode::Right => self.yesno_opt = YesNoDialogOption::No, // Set to NO
+                KeyCode::Left => self.yesno_opt = YesNoDialogOption::Yes, // Set to YES
+                _ => { /* Nothing to do */ }
+            }
+        }
+    }
+}

src/ui/activities/setup_activity/layout.rs

@@ -0,0 +1,49 @@
+//! ## SetupActivity
+//!
+//! `setup_activity` is the module which implements the Setup activity, which is the activity to
+//! work on termscp configuration
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+use super::{Context, Popup, QuitDialogOption, SetupActivity, SetupTab};
+use crate::utils::fmt::align_text_center;
+
+use tui::{
+    layout::{Constraint, Corner, Direction, Layout, Rect},
+    style::{Color, Modifier, Style},
+    text::{Span, Spans, Text},
+    widgets::{Block, BorderType, Borders, Clear, List, ListItem, ListState, Paragraph, Tabs},
+};
+use unicode_width::UnicodeWidthStr;
+
+impl SetupActivity {
+    /// ### draw
+    ///
+    /// Draw UI
+    pub(super) fn draw(&mut self) {
+        let mut ctx: Context = self.context.take().unwrap();
+        let _ = ctx.terminal.draw(|f| {
+            // TODO: prepare layout
+        });
+        self.context = Some(ctx);
+    }
+}

src/ui/activities/setup_activity/misc.rs

@@ -0,0 +1,38 @@
+//! ## SetupActivity
+//!
+//! `setup_activity` is the module which implements the Setup activity, which is the activity to
+//! work on termscp configuration
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+use super::SetupActivity;
+
+impl SetupActivity {
+    /// ### clear_user_input
+    ///
+    /// Clear user input buffers
+    pub(super) fn clear_user_input(&mut self) {
+        for s in self.user_input.iter_mut() {
+            s.clear();
+        }
+    }
+}

src/ui/activities/setup_activity/mod.rs

@@ -0,0 +1,200 @@
+//! ## SetupActivity
+//!
+//! `setup_activity` is the module which implements the Setup activity, which is the activity to
+//! work on termscp configuration
+
+/*
+*
+*   Copyright (C) 2020 Christian Visintin - christian.visintin1997@gmail.com
+*
+* 	This file is part of "TermSCP"
+*
+*   TermSCP is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   TermSCP is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with TermSCP.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+// Submodules
+mod callbacks;
+mod config;
+mod input;
+mod layout;
+mod misc;
+
+// Deps
+extern crate crossterm;
+extern crate tui;
+
+// Locals
+use super::{Activity, Context};
+use crate::system::config_client::ConfigClient;
+// Ext
+use crossterm::event::Event as InputEvent;
+use crossterm::terminal::{disable_raw_mode, enable_raw_mode};
+use tui::style::Color;
+
+// Types
+type OnChoiceCallback = fn(&mut SetupActivity);
+
+/// ### UserInterfaceInputField
+///
+/// Input field selected in user interface
+#[derive(std::cmp::PartialEq, Clone)]
+enum UserInterfaceInputField {
+    DefaultProtocol,
+    TextEditor,
+}
+
+/// ### SetupTab
+///
+/// Selected setup tab
+#[derive(std::cmp::PartialEq)]
+enum SetupTab {
+    UserInterface(UserInterfaceInputField),
+    SshConfig,
+}
+
+/// ### QuitDialogOption
+///
+/// Quit dialog options
+#[derive(std::cmp::PartialEq, Clone)]
+enum QuitDialogOption {
+    Save,
+    DontSave,
+    Cancel,
+}
+
+/// ### YesNoDialogOption
+///
+/// YesNo dialog options
+#[derive(std::cmp::PartialEq, Clone)]
+enum YesNoDialogOption {
+    Yes,
+    No,
+}
+
+/// ## Popup
+///
+/// Popup describes the type of popup
+#[derive(Clone)]
+enum Popup {
+    Alert(Color, String),                              // Block color; Block text
+    Fatal(String),                                     // Must quit after being hidden
+    Help,                                              // Show Help
+    NewSshKey,                                         //
+    Quit,                                              // Quit dialog
+    YesNo(String, OnChoiceCallback, OnChoiceCallback), // Yes/No Dialog
+}
+
+/// ## SetupActivity
+///
+/// Setup activity states holder
+pub struct SetupActivity {
+    pub quit: bool,           // Becomes true when user requests the activity to terminate
+    context: Option<Context>, // Context holder
+    config_cli: Option<ConfigClient>, // Config client
+    tab: SetupTab,            // Current setup tab
+    popup: Option<Popup>,     // Active popup
+    user_input: Vec<String>,  // User input holder
+    user_input_ptr: usize,    // Selected user input
+    quit_opt: QuitDialogOption, // Popup::Quit selected option
+    yesno_opt: YesNoDialogOption, // Popup::YesNo selected option
+    ssh_key_idx: usize,       // Index of selected ssh key in list
+}
+
+impl Default for SetupActivity {
+    fn default() -> Self {
+        // Initialize user input
+        let mut user_input_buffer: Vec<String> = Vec::with_capacity(16);
+        for _ in 0..16 {
+            user_input_buffer.push(String::new());
+        }
+        SetupActivity {
+            quit: false,
+            context: None,
+            config_cli: None,
+            tab: SetupTab::UserInterface(UserInterfaceInputField::TextEditor),
+            popup: None,
+            user_input: user_input_buffer, // Max 16
+            user_input_ptr: 0,
+            quit_opt: QuitDialogOption::Save,
+            yesno_opt: YesNoDialogOption::Yes,
+            ssh_key_idx: 0,
+        }
+    }
+}
+
+impl Activity for SetupActivity {
+    /// ### on_create
+    ///
+    /// `on_create` is the function which must be called to initialize the activity.
+    /// `on_create` must initialize all the data structures used by the activity
+    /// Context is taken from activity manager and will be released only when activity is destroyed
+    fn on_create(&mut self, context: Context) {
+        // Set context
+        self.context = Some(context);
+        // Clear terminal
+        self.context.as_mut().unwrap().clear_screen();
+        // Put raw mode on enabled
+        let _ = enable_raw_mode();
+        // Initialize config client
+        if self.config_cli.is_none() {
+            self.init_config_client();
+        }
+    }
+
+    /// ### on_draw
+    ///
+    /// `on_draw` is the function which draws the graphical interface.
+    /// This function must be called at each tick to refresh the interface
+    fn on_draw(&mut self) {
+        // Context must be something
+        if self.context.is_none() {
+            return;
+        }
+        let mut redraw: bool = false;
+        // Read one event
+        if let Ok(event) = self.context.as_ref().unwrap().input_hnd.read_event() {
+            if let Some(event) = event {
+                // Set redraw to true
+                redraw = true;
+                // Handle event
+                self.handle_input_event(&event);
+            }
+        }
+        // Redraw if necessary
+        if redraw {
+            // Draw
+            self.draw();
+        }
+    }
+
+    /// ### on_destroy
+    ///
+    /// `on_destroy` is the function which cleans up runtime variables and data before terminating the activity.
+    /// This function must be called once before terminating the activity.
+    /// This function finally releases the context
+    fn on_destroy(&mut self) -> Option<Context> {
+        // Disable raw mode
+        let _ = disable_raw_mode();
+        self.context.as_ref()?;
+        // Clear terminal and return
+        match self.context.take() {
+            Some(mut ctx) => {
+                ctx.clear_screen();
+                Some(ctx)
+            }
+            None => None,
+        }
+    }
+}