135 lines
4.5 KiB
Bash
135 lines
4.5 KiB
Bash
#!/bin/bash
|
|
|
|
#-----------------------------------------------------------------------------------------------
|
|
# --------------------- Common Shared Functions for Unraid Scripts -----------------------------
|
|
#-----------------------------------------------------------------------------------------------
|
|
# This file contains ONLY reusable logic.
|
|
# No code should execute on load — only functions.
|
|
# All user configuration lives in Master.conf
|
|
#-----------------------------------------------------------------------------------------------
|
|
|
|
#-----------------------------------------------------------------------------------------------
|
|
# Load Master.conf
|
|
#-----------------------------------------------------------------------------------------------
|
|
load_master_conf() {
|
|
local script_dir
|
|
script_dir="$(cd "$(dirname "${BASH_SOURCE[1]}")" && pwd)"
|
|
local master_conf="$script_dir/../Master.conf"
|
|
|
|
if [ -f "$master_conf" ]; then
|
|
source "$master_conf"
|
|
echo "Loaded Master.conf from $master_conf"
|
|
else
|
|
echo "Error: Master.conf not found at $master_conf"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
#-----------------------------------------------------------------------------------------------
|
|
# Parse CLI args (flags + VAR=value overrides)
|
|
#-----------------------------------------------------------------------------------------------
|
|
parse_args() {
|
|
DRY_RUN=${DRY_RUN:-false}
|
|
|
|
for ARG in "$@"; do
|
|
if [[ "$ARG" == *=* ]]; then
|
|
local VAR_NAME="${ARG%%=*}"
|
|
local VAR_VALUE="${ARG#*=}"
|
|
|
|
if declare -p "$VAR_NAME" &>/dev/null; then
|
|
printf -v "$VAR_NAME" '%s' "$VAR_VALUE"
|
|
echo "Overriding $VAR_NAME -> $VAR_VALUE"
|
|
else
|
|
echo "Warning: Unknown variable $VAR_NAME, ignoring."
|
|
fi
|
|
else
|
|
case "$ARG" in
|
|
--dry-run|-n)
|
|
DRY_RUN=true
|
|
;;
|
|
--help|-h)
|
|
echo "Usage: script [--dry-run|-n] [VAR=value ...]"
|
|
exit 0
|
|
;;
|
|
*)
|
|
echo "Warning: Unknown argument $ARG"
|
|
;;
|
|
esac
|
|
fi
|
|
done
|
|
}
|
|
|
|
#-----------------------------------------------------------------------------------------------
|
|
# Validate integer (non-negative)
|
|
#-----------------------------------------------------------------------------------------------
|
|
validate_int() {
|
|
local name="$1"
|
|
local value="$2"
|
|
|
|
if ! [[ "${value:-}" =~ ^[0-9]+$ ]]; then
|
|
echo "Error: $name must be a non-negative integer."
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
#-----------------------------------------------------------------------------------------------
|
|
# Require variable to be set
|
|
#-----------------------------------------------------------------------------------------------
|
|
require_var() {
|
|
local var="$1"
|
|
|
|
if [[ -z "${!var:-}" ]]; then
|
|
echo "Error: Required variable $var is not set."
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
#-----------------------------------------------------------------------------------------------
|
|
# Detect hosts + networking + SSH key
|
|
#-----------------------------------------------------------------------------------------------
|
|
detect_hosts() {
|
|
# Ensure required config exists
|
|
require_var HOST1
|
|
require_var HOST2
|
|
|
|
# Detect local hostname
|
|
LOCAL_HOSTNAME="$(hostname)"
|
|
|
|
if [[ "$LOCAL_HOSTNAME" == "$HOST1" ]]; then
|
|
LOCAL_SERVER_NAME="$HOST1"
|
|
REMOTE_SERVER_NAME="$HOST2"
|
|
elif [[ "$LOCAL_HOSTNAME" == "$HOST2" ]]; then
|
|
LOCAL_SERVER_NAME="$HOST2"
|
|
REMOTE_SERVER_NAME="$HOST1"
|
|
else
|
|
echo "Error: Local hostname ($LOCAL_HOSTNAME) not recognized."
|
|
exit 1
|
|
fi
|
|
|
|
echo "Local server: $LOCAL_SERVER_NAME"
|
|
echo "Remote server: $REMOTE_SERVER_NAME"
|
|
|
|
# Resolve Tailscale IP
|
|
REMOTE_SERVER=$(tailscale ip -4 "$REMOTE_SERVER_NAME" 2>/dev/null)
|
|
|
|
if [[ -z "$REMOTE_SERVER" ]]; then
|
|
echo "Error: Could not resolve Tailscale IP for $REMOTE_SERVER_NAME"
|
|
exit 1
|
|
fi
|
|
|
|
# SSH Key Mapping (kept here for stability)
|
|
declare -A SSH_KEYS
|
|
SSH_KEYS["$HOST1|$HOST2"]="/root/.ssh/Gmer4Lfe-rsync-key"
|
|
SSH_KEYS["$HOST2|$HOST1"]="/root/.ssh/Jayred365-rsync-key"
|
|
|
|
KEY_ID="$LOCAL_SERVER_NAME|$REMOTE_SERVER_NAME"
|
|
|
|
if [[ -n "${SSH_KEYS[$KEY_ID]}" ]]; then
|
|
SSH_KEY="${SSH_KEYS[$KEY_ID]}"
|
|
else
|
|
echo "Error: No SSH key defined for $LOCAL_SERVER_NAME → $REMOTE_SERVER_NAME"
|
|
exit 1
|
|
fi
|
|
|
|
echo "Using SSH key: $SSH_KEY"
|
|
} |