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sshlogv.sh
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#!/bin/bash
# Check journalctl availability
if ! command -v journalctl &> /dev/null; then
echo "Error: journalctl not found! This script requires systemd."
echo "Install systemd-journal or use alternative logging methods."
exit 1
fi
# Get terminal width
TERM_WIDTH=$(tput cols)
# Dynamic column widths (responsive)
DATE_WIDTH=8
TIME_WIDTH=8
SESSION_WIDTH=10
USERNAME_WIDTH=10
WRONG_USER_WIDTH=10
PUBKEY_WIDTH=10
SYSTEM_WIDTH=15
SUCCESS_WIDTH=8
FAILED_WIDTH=8
PASSWD_WIDTH=8
USER_WIDTH=8
SRC_IP_WIDTH=15
DST_IP_WIDTH=15
PORT_WIDTH=5
# Calculate total width
TOTAL_WIDTH=$((DATE_WIDTH + TIME_WIDTH + SESSION_WIDTH + USERNAME_WIDTH + WRONG_USER_WIDTH + PUBKEY_WIDTH + SYSTEM_WIDTH + SUCCESS_WIDTH + FAILED_WIDTH + PASSWD_WIDTH + USER_WIDTH + SRC_IP_WIDTH + DST_IP_WIDTH + PORT_WIDTH))
# Check if terminal is wide enough
if ((TERM_WIDTH < TOTAL_WIDTH)); then
echo "Warning: Terminal width (${TERM_WIDTH}) is narrower than table width (${TOTAL_WIDTH})"
echo "Table may wrap. Consider widening your terminal."
fi
# Compact table formatting
format_log() {
local log_line="$1"
local timestamp=$(echo "$log_line" | awk '{print $1, $2, $3}')
local message=$(echo "$log_line" | sed -E 's/^.*sshd\[.*\]: //')
# Extract key details
local date=$(echo "$timestamp" | awk '{print $1}')
local time=$(echo "$timestamp" | awk '{print $3}')
local session_type=$(echo "$message" | grep -oE 'session.*opened' | awk '{print $2}')
local username=$(echo "$message" | grep -oE 'user.*from' | awk '{print $2}')
local wrong_user=$(echo "$message" | grep -qE 'Failed.*user' && echo "Yes" || echo "No")
local pubkey_type=$(echo "$message" | grep -oE 'publickey.*type' | awk '{print $3}')
local system=$(echo "$message" | grep -oE 'from.*port' | awk '{print $2}')
local success=$(echo "$message" | grep -qE 'Accepted' && echo "Yes" || echo "No")
local failed=$(echo "$message" | grep -qE 'Failed' && echo "Yes" || echo "No")
local failed_password=$(echo "$message" | grep -qE 'Failed.*password' && echo "Yes" || echo "No")
local src_ip=$(echo "$message" | grep -oE 'from.*port' | awk '{print $2}')
local dst_ip=$(echo "$message" | grep -oE 'from.*port' | awk '{print $2}')
local port=$(echo "$message" | grep -oE 'port.*ssh2' | awk '{print $2}')
# Truncate long values to prevent overflow
system=$(echo "$system" | cut -c1-${SYSTEM_WIDTH})
src_ip=$(echo "$src_ip" | cut -c1-${SRC_IP_WIDTH})
dst_ip=$(echo "$dst_ip" | cut -c1-${DST_IP_WIDTH})
printf "%-${DATE_WIDTH}s | %-${TIME_WIDTH}s | %-${SESSION_WIDTH}s | %-${USERNAME_WIDTH}s | %-${WRONG_USER_WIDTH}s | %-${PUBKEY_WIDTH}s | %-${SYSTEM_WIDTH}s | %-${SUCCESS_WIDTH}s | %-${FAILED_WIDTH}s | %-${PASSWD_WIDTH}s | %-${USER_WIDTH}s | %-${SRC_IP_WIDTH}s | %-${DST_IP_WIDTH}s | %-${PORT_WIDTH}s\n" \
"$date" "$time" "$session_type" "$username" "$wrong_user" "$pubkey_type" "$system" "$success" "$failed" "$failed_password" "$wrong_user" "$src_ip" "$dst_ip" "$port"
}
display_header() {
printf "%-${DATE_WIDTH}s | %-${TIME_WIDTH}s | %-${SESSION_WIDTH}s | %-${USERNAME_WIDTH}s | %-${WRONG_USER_WIDTH}s | %-${PUBKEY_WIDTH}s | %-${SYSTEM_WIDTH}s | %-${SUCCESS_WIDTH}s | %-${FAILED_WIDTH}s | %-${PASSWD_WIDTH}s | %-${USER_WIDTH}s | %-${SRC_IP_WIDTH}s | %-${DST_IP_WIDTH}s | %-${PORT_WIDTH}s\n" \
"DATE" "TIME" "SESSION" "USERNAME" "WRONG_USER" "PUBKEY" "SYSTEM" "SUCCESS" "FAILED" "PASSWD" "USER" "SRC_IP" "DST_IP" "PORT"
printf "%-${DATE_WIDTH}s | %-${TIME_WIDTH}s | %-${SESSION_WIDTH}s | %-${USERNAME_WIDTH}s | %-${WRONG_USER_WIDTH}s | %-${PUBKEY_WIDTH}s | %-${SYSTEM_WIDTH}s | %-${SUCCESS_WIDTH}s | %-${FAILED_WIDTH}s | %-${PASSWD_WIDTH}s | %-${USER_WIDTH}s | %-${SRC_IP_WIDTH}s | %-${DST_IP_WIDTH}s | %-${PORT_WIDTH}s\n" \
$(printf "%-${DATE_WIDTH}s" "--------") \
$(printf "%-${TIME_WIDTH}s" "--------") \
$(printf "%-${SESSION_WIDTH}s" "----------") \
$(printf "%-${USERNAME_WIDTH}s" "----------") \
$(printf "%-${WRONG_USER_WIDTH}s" "----------") \
$(printf "%-${PUBKEY_WIDTH}s" "----------") \
$(printf "%-${SYSTEM_WIDTH}s" "---------------") \
$(printf "%-${SUCCESS_WIDTH}s" "--------") \
$(printf "%-${FAILED_WIDTH}s" "--------") \
$(printf "%-${PASSWD_WIDTH}s" "--------") \
$(printf "%-${USER_WIDTH}s" "--------") \
$(printf "%-${SRC_IP_WIDTH}s" "---------------") \
$(printf "%-${DST_IP_WIDTH}s" "---------------") \
$(printf "%-${PORT_WIDTH}s" "-----")
}
# Main menu loop
while true; do
clear
echo ">>===========================================<<";
echo "|| ____ ____ _ _ _ ___ ____ ||";
echo "|| / ___/ ___|| | | | | / _ \ / ___|_ __ ||";
echo "|| \___ \___ \| |_| | | | | | | | _\ \ / / ||";
echo "|| ___) |__) | _ | |__| |_| | |_| |\ V / ||";
echo "|| |____/____/|_| |_|_____\___/ \____| \_/ ||";
echo "|| ||";
echo ">>============== SSH Log Viewer =============<<";
echo ">>===========================================<<";
echo ">>===========================================<<";
echo ""
echo "1. => Live Stream"
echo "2. => Last 10 Logs"
echo "3. => Filter by User"
echo "4. => Filter by Failed Sessions"
echo "5. => Filter by Date"
echo "6. => Exit"
read -p "Choose: " choice
case $choice in
1)
echo "Live Log Stream"
echo "----------------"
display_header
sudo journalctl -u ssh -f --no-pager | while read -r line; do
format_log "$line"
done
;;
2)
echo "Last 10 Logs"
echo "-------------"
display_header
sudo journalctl -u ssh -n 10 | while read -r line; do
format_log "$line"
done
read -p "Save? (y/n): " save
if [[ "$save" == "y" ]]; then
read -p "Filename: " file
sudo journalctl -u ssh -n 10 > "$file"
echo "Saved to $file"
fi
read -p "Press Enter..."
;;
3)
echo "Filter by Successful User"
echo "-------------------------"
read -p "Enter username: " user_filter
read -p "Show last X entries (default=10): " count
count=${count:-10}
display_header
sudo journalctl -u ssh | grep -E "user $user_filter" | tail -n "$count" | while read -r line; do
format_log "$line"
done
read -p "Save? (y/n): " save
if [[ "$save" == "y" ]]; then
read -p "Filename: " file
sudo journalctl -u ssh | grep -E "user $user_filter" | tail -n "$count" > "$file"
echo "Saved to $file"
fi
read -p "Press Enter..."
;;
4)
echo "Filter by Failed Sessions"
echo "-------------------------"
read -p "Show last X entries (default=10): " count
count=${count:-10}
display_header
sudo journalctl -u ssh | grep -E 'Failed' | tail -n "$count" | while read -r line; do
format_log "$line"
done
read -p "Save? (y/n): " save
if [[ "$save" == "y" ]]; then
read -p "Filename: " file
sudo journalctl -u ssh | grep -E 'Failed' | tail -n "$count" > "$file"
echo "Saved to $file"
fi
read -p "Press Enter..."
;;
5)
echo "Filter by Date"
echo "--------------"
read -p "Enter date (YYYY-MM-DD): " date_filter
read -p "Show last X entries (default=10): " count
count=${count:-10}
display_header
sudo journalctl -u ssh --since "$date_filter" --until "$(date -d "$date_filter +1 day" +%Y-%m-%d)" | tail -n "$count" | while read -r line; do
format_log "$line"
done
read -p "Save? (y/n): " save
if [[ "$save" == "y" ]]; then
read -p "Filename: " file
sudo journalctl -u ssh --since "$date_filter" --until "$(date -d "$date_filter +1 day" +%Y-%m-%d)" | tail -n "$count" > "$file"
echo "Saved to $file"
fi
read -p "Press Enter..."
;;
6)
exit 0
;;
*)
echo "Invalid choice"
read -p "Press Enter..."
;;
esac
done