From bc2ef7b326229c8c6be7c5fb35bb8fcd6004c548 Mon Sep 17 00:00:00 2001
From: localhorst <localhorst@mosad.xyz>
Date: Fri, 1 May 2026 23:04:23 +0200
Subject: [PATCH] add log file export script

---
 root/root/.bashrc              |   1 +
 root/root/export_reHDD_logs.sh | 197 +++++++++++++++++++++++++++++++++
 2 files changed, 198 insertions(+)
 create mode 100644 root/root/export_reHDD_logs.sh

diff --git a/root/root/.bashrc b/root/root/.bashrc
index 238f551..ac5f714 100644
--- a/root/root/.bashrc
+++ b/root/root/.bashrc
@@ -15,3 +15,4 @@ alias l='ls $LS_OPTIONS -lA'
 PS1='\[\033[1;33m\]\u\[\033[1;37m\]@\[\033[1;32m\]\h\[\033[1;37m\] \[\033[1;31m\]\w \[\033[1;37m\]> \[\033[0m\]'
 
 alias restartrehdd='systemctl restart getty@tty1.service'
+alias exportlogsrehdd='clear && /usr/bin/bash /root/export_reHDD_logs.sh'
diff --git a/root/root/export_reHDD_logs.sh b/root/root/export_reHDD_logs.sh
new file mode 100644
index 0000000..5c9024e
--- /dev/null
+++ b/root/root/export_reHDD_logs.sh
@@ -0,0 +1,197 @@
+#!/usr/bin/env bash
+# export_reHDD_logs.sh
+# Exports reHDD logs to a selected drive with optional ext4 formatting.
+
+set -euo pipefail
+
+# ─── Colors ───────────────────────────────────────────────────────────────────
+RED='\033[0;31m'
+YEL='\033[1;33m'
+GRN='\033[0;32m'
+CYN='\033[0;36m'
+BLD='\033[1m'
+RST='\033[0m'
+
+# ─── Privilege check ──────────────────────────────────────────────────────────
+if [[ $EUID -ne 0 ]]; then
+  echo -e "${RED}Error: This script must be run as root.${RST}" >&2
+  exit 1
+fi
+
+# ─── Dependency check ─────────────────────────────────────────────────────────
+for cmd in lsblk mkfs.ext4 mount umount sync; do
+  if ! command -v "$cmd" &>/dev/null; then
+    echo -e "${RED}Error: Required command '${cmd}' not found.${RST}" >&2
+    exit 1
+  fi
+done
+
+SOURCE_LOG="/root/reHDD/reHDD.log"
+if [[ ! -f "$SOURCE_LOG" ]]; then
+  echo -e "${RED}Error: Log file not found: ${SOURCE_LOG}${RST}" >&2
+  exit 1
+fi
+
+# ─── 1. Discover drives ───────────────────────────────────────────────────────
+echo -e "\n${BLD}${CYN}=== reHDD Log Exporter ===${RST}\n"
+echo -e "${BLD}Scanning for block devices...${RST}\n"
+
+# Collect drives (disk type, not partitions/loops/rom)
+# Temporarily disable errexit so an empty result doesn't kill the script
+DRIVES=()
+while IFS= read -r line; do
+  [[ -n "$line" ]] && DRIVES+=("$line")
+done < <(lsblk -dpno NAME,TYPE 2>/dev/null | awk '$2=="disk"{print $1}' || true)
+
+if [[ ${#DRIVES[@]} -eq 0 ]]; then
+  echo -e "${RED}No drives found.${RST}" >&2
+  exit 1
+fi
+
+# Build display table
+declare -a DRIVE_PATHS DRIVE_SIZES DRIVE_FS
+
+idx=0
+for drv in "${DRIVES[@]}"; do
+  # NVMe uses /dev/nvme0n1p1, SATA/USB use /dev/sda1
+  if [[ "$drv" =~ nvme ]]; then
+    part="${drv}p1"
+  else
+    part="${drv}1"
+  fi
+
+  # Human-readable size of the whole disk
+  size=$(lsblk -dno SIZE "$drv" 2>/dev/null || echo "N/A")
+
+  # Filesystem on first partition (if it exists)
+  if [[ -b "$part" ]]; then
+    fs=$(lsblk -no FSTYPE "$part" 2>/dev/null | head -1 || true)
+    fs=${fs:-"<unknown>"}
+  else
+    fs="<no partition>"
+  fi
+
+  DRIVE_PATHS[$idx]="$drv"
+  DRIVE_SIZES[$idx]="$size"
+  DRIVE_FS[$idx]="$fs"
+  (( idx++ )) || true
+done
+
+# Print table
+printf "  ${BLD}%-4s %-12s %-10s %-15s${RST}\n" "No." "Path" "Size" "FS (part1)"
+printf "  %-4s %-12s %-10s %-15s\n" "----" "------------" "----------" "---------------"
+for i in "${!DRIVE_PATHS[@]}"; do
+  printf "  ${GRN}%-4s${RST} %-12s %-10s %-15s\n" \
+    "$((i+1))" "${DRIVE_PATHS[$i]}" "${DRIVE_SIZES[$i]}" "${DRIVE_FS[$i]}"
+done
+echo ""
+
+# ─── 2. Drive selection ───────────────────────────────────────────────────────
+while true; do
+  read -rp "$(echo -e "${BLD}Select drive [1-${#DRIVE_PATHS[@]}]:${RST} ")" sel
+  if [[ "$sel" =~ ^[0-9]+$ ]] && (( sel >= 1 && sel <= ${#DRIVE_PATHS[@]} )); then
+    SELECTED_IDX=$((sel-1))
+    break
+  fi
+  echo -e "${YEL}Invalid selection, try again.${RST}"
+done
+
+DRIVE="${DRIVE_PATHS[$SELECTED_IDX]}"
+# NVMe partitions use 'p1' suffix, SATA/USB use '1'
+if [[ "$DRIVE" =~ nvme ]]; then
+  PARTITION="${DRIVE}p1"
+else
+  PARTITION="${DRIVE}1"
+fi
+CURRENT_FS="${DRIVE_FS[$SELECTED_IDX]}"
+
+echo -e "\nSelected: ${BLD}${DRIVE}${RST}  (${DRIVE_SIZES[$SELECTED_IDX]}, fs: ${CURRENT_FS})\n"
+
+# ─── 3. Create ext4 if needed ─────────────────────────────────────────────────
+if [[ "$CURRENT_FS" != "ext4" ]]; then
+  echo -e "${YEL}Warning:${RST} Partition ${PARTITION} does not have an ext4 filesystem."
+  echo -e "         Current: ${BLD}${CURRENT_FS}${RST}"
+  echo -e "${RED}         All existing data on ${PARTITION} will be DESTROYED.${RST}\n"
+
+  read -rp "$(echo -e "${BLD}Create ext4 filesystem on ${PARTITION}? [yes/NO]: ${RST}")" confirm
+  if [[ "$confirm" != "yes" ]]; then
+    echo -e "${YEL}Aborted by user.${RST}"
+    exit 0
+  fi
+
+  echo -e "\n${CYN}Creating ext4 filesystem on ${PARTITION}...${RST}"
+
+  # If there is no partition table / first partition, create one first
+  if [[ ! -b "$PARTITION" ]]; then
+    echo -e "${CYN}No first partition found – creating a single primary partition...${RST}"
+    echo -e "o\nn\np\n1\n\n\nw" | fdisk "$DRIVE" >/dev/null 2>&1 || true
+    partprobe "$DRIVE" 2>/dev/null || true
+    sleep 1
+  fi
+
+  mkfs.ext4 -F "$PARTITION"
+  echo -e "${GRN}ext4 filesystem created successfully.${RST}\n"
+fi
+
+# ─── 4. Mount partition ───────────────────────────────────────────────────────
+RAND_HEX=$(tr -dc 'a-f0-9' </dev/urandom | head -c 16 || true)
+MNT_DIR="/mnt/${RAND_HEX}_reHDD_Log_Exporter"
+
+echo -e "${CYN}Mounting ${PARTITION} at ${MNT_DIR} ...${RST}"
+mkdir -p "$MNT_DIR"
+
+# Ensure cleanup on unexpected exit
+cleanup() {
+  local exit_code=$?
+  if mountpoint -q "$MNT_DIR" 2>/dev/null; then
+    umount "$MNT_DIR" 2>/dev/null || true
+  fi
+  if [[ -d "$MNT_DIR" ]]; then
+    rmdir "$MNT_DIR" 2>/dev/null || true
+  fi
+  exit $exit_code
+}
+trap cleanup ERR INT TERM
+
+mount "$PARTITION" "$MNT_DIR"
+echo -e "${GRN}Mounted successfully.${RST}\n"
+
+# ─── 5. Prefix input ─────────────────────────────────────────────────────────
+while true; do
+  read -rp "$(echo -e "${BLD}Enter a prefix (no spaces, e.g. shredderpc42): ${RST}")" PREFIX
+  if [[ -z "$PREFIX" ]]; then
+    echo -e "${YEL}Prefix must not be empty.${RST}"
+  elif [[ "$PREFIX" =~ [[:space:]] ]]; then
+    echo -e "${YEL}Prefix must not contain spaces.${RST}"
+  else
+    break
+  fi
+done
+
+# ─── 6. Copy log file ─────────────────────────────────────────────────────────
+TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
+DEST_FILE="${MNT_DIR}/${PREFIX}_reHDD_${TIMESTAMP}.log"
+
+echo -e "\n${CYN}Copying log to ${DEST_FILE} ...${RST}"
+cp "$SOURCE_LOG" "$DEST_FILE"
+echo -e "${GRN}Log copied successfully.${RST}\n"
+
+# ─── 7. Sync ──────────────────────────────────────────────────────────────────
+echo -e "${CYN}Syncing buffers to disk...${RST}"
+sync
+echo -e "${GRN}Sync complete.${RST}\n"
+
+# ─── 8. Unmount & cleanup ─────────────────────────────────────────────────────
+echo -e "${CYN}Unmounting ${MNT_DIR} ...${RST}"
+umount "$MNT_DIR"
+echo -e "${GRN}Unmounted.${RST}"
+
+echo -e "${CYN}Removing mount directory...${RST}"
+rmdir "$MNT_DIR"
+echo -e "${GRN}Done.${RST}\n"
+
+# Disable trap — clean exit
+trap - ERR INT TERM
+
+echo -e "${BLD}${GRN}✓ Log exported successfully to ${DRIVE} as:${RST}"
+echo -e "  ${BLD}${PREFIX}_reHDD_${TIMESTAMP}.log${RST}\n"