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Commit 20ad853

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add error checks
1 parent b893de0 commit 20ad853

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+105
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‎install.sh‎

Lines changed: 105 additions & 97 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,12 @@
11
#!/bin/bash
22

3+
# Server Configuration Script
4+
# This script provides a menu-driven interface to perform various server configuration tasks.
5+
# It allows users to install essential apps, set up NGINX and PHP, configure NVM, enable passwordless sudo,
6+
# set up SSH key-based authentication and configure static IP address.
7+
8+
# Author: Decaded (https://github.com/decaded)
9+
310
# Function to display a menu and get user's choice
411
show_menu() {
512
clear
@@ -11,13 +18,13 @@ show_menu() {
1118
echo "3) Install Node Version Manager (NVM)"
1219
echo "4) Enable Passwordless sudo access"
1320
echo "5) Set up SSH key-based authentication"
21+
echo "6) Configure Static IP Address"
22+
echo
23+
1424
if [ -f "/etc/ssh/sshd_config_decoscript.backup" ]; then
15-
echo "6) Restore SSH Configuration"
16-
else
17-
echo "6) Restore SSH Configuration (Not available)"
25+
echo "9) Restore SSH Configuration"
1826
fi
19-
echo "7) Configure Static IP Address"
20-
echo
27+
2128
echo "0) Exit"
2229
echo
2330
read -rp "Enter your choice: " choice
@@ -27,12 +34,13 @@ show_menu() {
2734
3) install_nvm ;;
2835
4) enable_passwordless_sudo "$USER" ;;
2936
5) setup_ssh_key_authentication ;;
30-
7) configure_static_ip ;;
31-
6)
37+
6) configure_static_ip ;;
38+
9)
3239
if [ -f "/etc/ssh/sshd_config_decoscript.backup" ]; then
3340
restore_ssh_config
3441
else
35-
echo "SSH configuration backup is not available for restoration."
42+
echo "Invalid choice. Please select a valid option."
43+
show_menu
3644
fi
3745
;;
3846
0)
@@ -74,77 +82,86 @@ install_essential_apps() {
7482
if ! [ -x "$(command -v dialog)" ]; then
7583
echo "Dialog is not installed. Installing dialog..."
7684
sudo apt update && sudo apt install dialog -y
77-
fi
7885

79-
while true; do
80-
# Define the dialog menu options
81-
options=("1" "htop - Interactive process viewer" off
82-
"2" "screen - Terminal multiplexer" off
83-
"3" "nload - Network traffic monitor" off
84-
"4" "nano - Text editor" off
85-
"5" "firewalld - Firewall management" off
86-
"6" "fail2ban - Intrusion prevention system" off
87-
"7" "unattended-upgrades - Automatic updates" off
88-
"8" "git - Version control system" off)
89-
90-
# Display the dialog menu and store the user's choices
91-
choices=$(dialog --clear --title "Essential Apps Installer" --checklist "Choose which apps to install:" 0 0 0 "${options[@]}" 2>&1 >/dev/tty)
92-
93-
# Check if the user canceled or made no selection
86+
# Check if the installation was successful
9487
if [ $? -ne 0 ]; then
95-
clear
96-
echo "Canceled. Returning to the main menu."
88+
echo "Error: Failed to install dialog. Exiting."
9789
return
9890
fi
91+
fi
9992

100-
# Process user choices and install selected apps
101-
selected_apps=""
102-
103-
for choice in $choices; do
104-
case $choice in
105-
1) selected_apps+=" htop" ;;
106-
2) selected_apps+=" screen" ;;
107-
3) selected_apps+=" nload" ;;
108-
4) selected_apps+=" nano" ;;
109-
5) selected_apps+=" firewalld" ;;
110-
6) selected_apps+=" fail2ban" ;;
111-
7) selected_apps+=" unattended-upgrades" ;;
112-
8) selected_apps+=" git" ;;
113-
esac
114-
done
115-
116-
echo "Installing selected apps: $selected_apps"
117-
sudo apt update && sudo apt install $selected_apps -y
93+
# Define the dialog menu options
94+
app_options=("1" "htop - Interactive process viewer" off
95+
"2" "screen - Terminal multiplexer" off
96+
"3" "nload - Network traffic monitor" off
97+
"4" "nano - Text editor" off
98+
"5" "firewalld - Firewall management" off
99+
"6" "fail2ban - Intrusion prevention system" off
100+
"7" "unattended-upgrades - Automatic updates" off
101+
"8" "git - Version control system" off)
118102

119-
# Check if firewalld was selected
120-
if [[ "$selected_apps" == *"firewalld"* ]]; then
121-
configure_firewall
122-
fi
103+
# Display the dialog menu and store the user's choices
104+
choices=$(dialog --clear --title "Essential Apps Installer" --checklist "Choose which apps to install:" 0 0 0 "${app_options[@]}" 2>&1 >/dev/tty)
123105

124-
# Check if Fail2ban was selected
125-
if [[ "$selected_apps" == *"fail2ban"* ]]; then
126-
configure_fail2ban
127-
fi
106+
# Check if the user canceled or made no selection
107+
if [ $? -ne 0 ]; then
108+
clear
109+
echo "Canceled. Returning to the main menu."
110+
return
111+
fi
128112

129-
# Check if unattended-upgrades was selected
130-
if [[ "$selected_apps" == *"unattended-upgrades"* ]]; then
131-
sudo dpkg-reconfigure -plow unattended-upgrades
132-
fi
113+
# Process user choices and install selected apps
114+
selected_applications=""
115+
116+
for choice in $choices; do
117+
case $choice in
118+
1) selected_applications+=" htop" ;;
119+
2) selected_applications+=" screen" ;;
120+
3) selected_applications+=" nload" ;;
121+
4) selected_applications+=" nano" ;;
122+
5) selected_applications+=" firewalld" ;;
123+
6) selected_applications+=" fail2ban" ;;
124+
7) selected_applications+=" unattended-upgrades" ;;
125+
8) selected_applications+=" git" ;;
126+
esac
127+
done
133128

134-
# Check if Git was selected and is installed
135-
if [[ "$selected_apps" == *"git"* ]] && ! [ -x "$(command -v git)" ]; then
136-
echo "Git is not installed. Installing Git..."
137-
sudo apt install git -y
138-
fi
129+
if [ -z "$selected_applications" ]; then
130+
echo "No apps selected. Returning to the main menu."
131+
return
132+
fi
139133

140-
# Configure Git only if it was selected
141-
if [[ "$selected_apps" == *"git"* ]]; then
142-
configure_git
143-
fi
134+
echo "Installing selected apps: $selected_applications"
135+
sudo apt update && sudo apt install $selected_applications -y
144136

145-
echo "Installation complete."
137+
# Check if there was an error during installation
138+
if [ $? -ne 0 ]; then
139+
echo "Error: Failed to install some or all of the selected apps. Please check your internet connection and try again."
146140
return
147-
done
141+
fi
142+
143+
# Check if firewalld was selected
144+
if [[ "$selected_applications" == *"firewalld"* ]]; then
145+
configure_firewall
146+
fi
147+
148+
# Check if Fail2ban was selected
149+
if [[ "$selected_applications" == *"fail2ban"* ]]; then
150+
configure_fail2ban
151+
fi
152+
153+
# Check if unattended-upgrades was selected
154+
if [[ "$selected_applications" == *"unattended-upgrades"* ]]; then
155+
sudo dpkg-reconfigure -plow unattended-upgrades
156+
fi
157+
158+
# Configure Git only if it was selected
159+
if [[ "$selected_applications" == *"git"* ]]; then
160+
configure_git
161+
fi
162+
163+
echo "Installation complete."
164+
return
148165
}
149166

150167
# Function to configure the firewall with checks
@@ -231,17 +248,17 @@ setup_ssh_key_authentication() {
231248
echo "#######################################################"
232249

233250
# Read the user-provided public key and save it to a variable
234-
IFS= read -r user_public_key
251+
IFS= read -r ssh_public_key
235252

236253
# Create the ~/.ssh directory if it doesn't exist
237254
mkdir -p "$HOME/.ssh"
238255

239256
authorized_keys_file="$HOME/.ssh/authorized_keys"
240257

241258
# Check if the authorized_keys file exists and the key is not already present
242-
if [ -f "$authorized_keys_file" ] && ! grep -q "$user_public_key" "$authorized_keys_file"; then
259+
if [ -f "$authorized_keys_file" ] && ! grep -q "$ssh_public_key" "$authorized_keys_file"; then
243260
# Save the public key to the authorized_keys file
244-
echo "$user_public_key" >>"$authorized_keys_file"
261+
echo "$ssh_public_key" >>"$authorized_keys_file"
245262
if [ $? -ne 0 ]; then
246263
echo "Error: Failed to save the public key to authorized_keys file."
247264
exit 1
@@ -250,7 +267,7 @@ setup_ssh_key_authentication() {
250267
echo "Public key added to authorized_keys."
251268
elif [ ! -f "$authorized_keys_file" ]; then
252269
echo "Creating authorized_keys file..."
253-
echo "$user_public_key" >"$authorized_keys_file"
270+
echo "$ssh_public_key" >"$authorized_keys_file"
254271
if [ $? -ne 0 ]; then
255272
echo "Error: Failed to create authorized_keys file."
256273
exit 1
@@ -422,18 +439,14 @@ restore_ssh_config() {
422439
fi
423440
}
424441

425-
# Function to walidate ports
442+
# Function to validate if a given input is a valid port number
426443
validate_port() {
427444
local port="1ドル"
428-
if ! [[ "$port" =~ ^[0-9]+$ ]]; then
429-
echo "Error: Invalid port number. Please enter a valid numeric port."
430-
return 1
431-
fi
432-
433-
if [[ "$port" -lt 1 || "$port" -gt 65535 ]]; then
434-
echo "Error: Port number should be between 1 and 65535."
435-
return 1
445+
if ! [[ "$port" =~ ^[0-9]+$ ]] || ((port < 1 || port > 65535)); then
446+
echo "Error: Invalid port number. Please enter a valid numeric port between 1 and 65535."
447+
return 1 # Invalid port
436448
fi
449+
return 0 # Valid port
437450
}
438451

439452
# Function to configure Git
@@ -517,13 +530,13 @@ configure_fail2ban() {
517530
sudo apt install fail2ban -y
518531
;;
519532
2)
520-
read -rp "Enter the URL of the user custom configuration: " custom_config_url
533+
read -rp "Enter the URL of the user custom configuration: " fail2ban_custom_config_url
521534

522535
# Check if the URL is valid and accessible
523-
if wget --spider "$custom_config_url" 2>/dev/null; then
536+
if wget --spider "$fail2ban_custom_config_url" 2>/dev/null; then
524537
# Install Fail2ban if not already installed
525538
sudo apt install fail2ban -y
526-
sudo wget -O /etc/fail2ban/jail.local "$custom_config_url"
539+
sudo wget -O /etc/fail2ban/jail.local "$fail2ban_custom_config_url"
527540
echo "User custom Fail2ban configuration applied."
528541
else
529542
echo "Warning: Invalid URL or unable to reach the URL. Using the default configuration."
@@ -544,15 +557,10 @@ configure_static_ip() {
544557
clear
545558
echo "Configuring a static IP address using Netplan."
546559

547-
# Check if Netplan is installed, and if not, prompt the user to install it
548-
if ! command -v netplan &>/dev/null; then
549-
read -rp "Netplan is not installed. Do you want to install it? (Y/n): " install_netplan
550-
if [[ "$install_netplan" =~ ^[Yy]$ ]]; then
551-
sudo apt install netplan -y
552-
else
553-
echo "Netplan is required to configure the static IP address using this script. Exiting."
554-
exit 1
555-
fi
560+
# Check if Netplan is installed, and if not, install it
561+
if ! [ -x "$(command -v netplan)" ]; then
562+
echo "Netplan is not installed. Installing..."
563+
sudo apt update && sudo apt install netplan -y
556564
fi
557565

558566
# Prompt installation of ifconfig
@@ -572,11 +580,11 @@ configure_static_ip() {
572580
echo "$device_info"
573581

574582
# Prompt the user to enter the desired network device
575-
read -rp "Enter the network device name (e.g., enp5s0): " selected_device
583+
read -rp "Enter the network device name (e.g., enp5s0): " network_device
576584

577585
# Check if the selected device exists in the device information
578-
if ! echo "$device_info" | grep -q "$selected_device:"; then
579-
echo "Error: The selected network device '$selected_device' does not exist. Please enter a valid device name."
586+
if ! echo "$device_info" | grep -q "$network_device:"; then
587+
echo "Error: The selected network device '$network_device' does not exist. Please enter a valid device name."
580588
return
581589
fi
582590

@@ -598,7 +606,7 @@ configure_static_ip() {
598606
network:
599607
version: 2
600608
ethernets:
601-
$selected_device:
609+
$network_device:
602610
addresses: [$static_ip_address/$net_mask]
603611
gateway4: $gateway
604612
nameservers:
@@ -608,7 +616,7 @@ EOL
608616
# Apply the Netplan configuration
609617
sudo netplan apply
610618

611-
echo "Static IP address configuration completed for $selected_device."
619+
echo "Static IP address configuration completed for $network_device."
612620
}
613621

614622
# Main script

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