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feat: add option to list connected clients (#1396)

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## Summary
- Add new menu option "3) List connected clients" to show currently
connected VPN clients
- Parses `/var/log/openvpn/status.log` and displays client name, real
IP, VPN IP, connection time, and transfer stats
- Human-readable byte formatting (K/M/G)

## Example output
```
   Name                 Real Address           VPN IP           Connected Since      Transfer
   ----                 ------------           ------           ---------------      --------
   stan                 123.45.211.11:28291    10.8.0.2         2025-12-14 10:13:22  ↓7.3M ↑123.5M
```

Closes https://github.com/angristan/openvpn-install/pull/863
This commit is contained in:
Stanislas
2025-12-14 13:04:39 +01:00
committed by GitHub
parent e9deb4b8ab
commit 648fe1ee0b
2 changed files with 62 additions and 3 deletions
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1
README.md
View File

@@ -63,6 +63,7 @@ When OpenVPN is installed, you can run the script again, and you will get the ch
- Revoke a client
- Renew certificates (client or server)
- Uninstall OpenVPN
- List connected clients (shows real-time connection status)
In your home directory, you will have `.ovpn` files. These are the client configuration files. Download them from your server and connect using your favorite OpenVPN client.

64
openvpn-install.sh
View File

@@ -1903,6 +1903,60 @@ function listClients() {
log_menu ""
}
function formatBytes() {
local bytes=$1
# Validate input is numeric
if ! [[ "$bytes" =~ ^[0-9]+$ ]]; then
echo "N/A"
return
fi
if [[ $bytes -ge 1073741824 ]]; then
awk "BEGIN {printf \"%.1fG\", $bytes/1073741824}"
elif [[ $bytes -ge 1048576 ]]; then
awk "BEGIN {printf \"%.1fM\", $bytes/1048576}"
elif [[ $bytes -ge 1024 ]]; then
awk "BEGIN {printf \"%.1fK\", $bytes/1024}"
else
echo "${bytes}B"
fi
}
function listConnectedClients() {
log_header "Connected Clients"
local status_file="/var/log/openvpn/status.log"
if [[ ! -f "$status_file" ]]; then
log_warn "Status file not found: $status_file"
log_info "Make sure OpenVPN is running."
return
fi
local client_count
client_count=$(grep -c "^CLIENT_LIST" "$status_file" 2>/dev/null) || client_count=0
if [[ "$client_count" -eq 0 ]]; then
log_info "No clients currently connected."
return
fi
log_info "Found $client_count connected client(s)"
log_menu ""
printf " %-20s %-22s %-16s %-20s %s\n" "Name" "Real Address" "VPN IP" "Connected Since" "Transfer"
printf " %-20s %-22s %-16s %-20s %s\n" "----" "------------" "------" "---------------" "--------"
while IFS=',' read -r _ name real_addr vpn_ip _ bytes_recv bytes_sent connected_since _; do
local recv_human sent_human
recv_human=$(formatBytes "$bytes_recv")
sent_human=$(formatBytes "$bytes_sent")
local transfer="↓${recv_human} ↑${sent_human}"
printf " %-20s %-22s %-16s %-20s %s\n" "$name" "$real_addr" "$vpn_ip" "$connected_since" "$transfer"
done < <(grep "^CLIENT_LIST" "$status_file")
log_menu ""
}
function newClient() {
log_header "New Client Setup"
log_prompt "Tell me a name for the client."
@@ -2311,9 +2365,10 @@ function manageMenu() {
log_menu " 3) Revoke existing user"
log_menu " 4) Renew certificate"
log_menu " 5) Remove OpenVPN"
log_menu " 6) Exit"
until [[ ${MENU_OPTION:-$menu_option} =~ ^[1-6]$ ]]; do
read -rp "Select an option [1-6]: " menu_option
log_menu " 6) List connected clients"
log_menu " 7) Exit"
until [[ ${MENU_OPTION:-$menu_option} =~ ^[1-7]$ ]]; do
read -rp "Select an option [1-7]: " menu_option
done
menu_option="${MENU_OPTION:-$menu_option}"
@@ -2334,6 +2389,9 @@ function manageMenu() {
removeOpenVPN
;;
6)
listConnectedClients
;;
7)
exit 0
;;
esac