Add: Offline installation fallbacks for Maldet when network is unavailable
Improvements: - When all network sources are unreachable, checks for offline options - Checks system package repositories (yum/apt) for Maldet availability - Scans common locations (/root, /tmp, /opt) for pre-downloaded archives - Provides clear multi-method installation instructions for offline scenarios - Gracefully handles network-isolated servers - Supports pre-downloaded archive transfer via SCP - Falls back to system repositories if network-free alternative available This allows installation on restricted networks where external downloads aren't possible.
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Developer
@@ -355,21 +355,107 @@ install_maldet_only() {
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best_url="https://github.com/rfxn/maldet/archive/refs/heads/main.tar.gz"
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echo " → Downloading from GitHub main branch (fallback)"
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else
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echo -e "${RED}✗ All sources unreachable${NC}"
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# No internet access - check for offline options
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echo -e "${YELLOW}Network access unavailable. Checking offline options...${NC}"
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echo ""
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echo "Known working download URLs:"
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echo " Official: https://www.rfxn.com/downloads/maldetect-latest.tar.gz"
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echo " GitHub: https://github.com/rfxn/maldet/archive/refs/heads/main.tar.gz"
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# Option 1: Check if Maldet is available in system package repos
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local repo_available=false
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if command -v yum &>/dev/null; then
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echo " [1] Checking yum repositories..."
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if yum search maldet 2>/dev/null | grep -q "maldet"; then
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echo -e " ${GREEN}✓ Maldet found in yum repos${NC}"
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repo_available=true
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else
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echo " ✗ Not in yum repos"
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fi
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elif command -v apt-get &>/dev/null; then
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echo " [1] Checking apt repositories..."
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apt-get update > /dev/null 2>&1
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if apt-cache search maldet 2>/dev/null | grep -q "maldet"; then
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echo -e " ${GREEN}✓ Maldet found in apt repos${NC}"
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repo_available=true
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else
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echo " ✗ Not in apt repos"
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fi
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fi
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# Option 2: Check for pre-cached/pre-downloaded file
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echo " [2] Checking for pre-downloaded archive..."
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local local_archive=""
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for path in /root/maldetect*.tar.gz /tmp/maldetect*.tar.gz /opt/maldetect*.tar.gz; do
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if [ -f "$path" ]; then
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local_archive="$path"
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echo -e " ${GREEN}✓ Found: $path${NC}"
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repo_available=true
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break
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fi
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done
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echo ""
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if [ "$repo_available" = true ]; then
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if [ -n "$local_archive" ]; then
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echo "Using pre-downloaded archive: $local_archive"
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cp "$local_archive" /tmp/maldetect-offline.tar.gz
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best_source="offline"
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best_version="offline-archive"
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best_url="none"
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else
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echo "Attempting to install from system repositories..."
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if command -v yum &>/dev/null; then
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yum install -y maldet 2>&1 | tail -5
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elif command -v apt-get &>/dev/null; then
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apt-get install -y maldet 2>&1 | tail -5
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fi
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if is_maldet_installed; then
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echo -e "${GREEN}✓ Maldet installed from repositories${NC}"
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echo ""
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echo "Updating malware signatures..."
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if command -v maldet &>/dev/null; then
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maldet -u > /dev/null 2>&1 &
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echo " (signatures updating in background)"
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fi
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echo ""
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read -p "Press Enter to continue..." < /dev/tty 2>/dev/null || true
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return 0
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fi
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fi
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else
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echo -e "${RED}✗ No installation method available${NC}"
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echo ""
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echo "Network is unreachable. To install Maldet, use one of these methods:"
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echo ""
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echo " METHOD 1 - From another networked machine:"
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echo " wget https://www.rfxn.com/downloads/maldetect-latest.tar.gz"
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echo " scp maldetect-latest.tar.gz root@YOUR-SERVER:/root/"
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echo ""
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echo " METHOD 2 - Via GitHub (alternative):"
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echo " wget https://github.com/rfxn/maldet/archive/refs/heads/main.tar.gz"
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echo " scp main.tar.gz root@YOUR-SERVER:/root/"
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echo ""
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echo " METHOD 3 - From system repositories:"
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echo " yum install -y maldet # CentOS/RHEL"
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echo " apt-get install -y maldet # Ubuntu/Debian"
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echo ""
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echo "After downloading, place the archive in /root/ and run this installer again."
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echo ""
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read -p "Press Enter to continue..." < /dev/tty 2>/dev/null || true
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return 1
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fi
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fi
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echo ""
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# Download from the best source
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# Download from the best source (or use offline if already copied)
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local temp_file="maldetect-${best_version}.tar.gz"
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echo "Downloading $best_version..."
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if [ "$best_source" = "offline" ]; then
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echo "Using offline archive: /tmp/maldetect-offline.tar.gz"
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temp_file="/tmp/maldetect-offline.tar.gz"
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else
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echo "Downloading $best_version..."
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if wget -q --timeout=15 -O "$temp_file" "$best_url" 2>/dev/null; then
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echo -e "${GREEN}✓ Download successful${NC}"
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else
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@@ -377,6 +463,7 @@ install_maldet_only() {
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rm -f "$temp_file"
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return 1
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fi
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fi
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echo ""
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