make .s3cfg default

src/lib/handlers/targets/s3cmd.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# s3cmd.sh - upload files to S3 compatible object storage.
+# s3cmd.sh - upload files to S3 compatible object storage via s3cmd.
 # Copyright (c) 2022 ge <https://nixhacks.net/>
 #
 # This program is free software: you can redistribute it and/or modify
@@ -41,17 +41,12 @@ tgt_s3cmd() {
     s3cmd_options="${s3cmd_options:---preserve --quiet --no-progress}"
 
     # Set s3cmd comand. See s3cmd(1)
-    if [ -n "$s3cmd_config" ]; then
+    if  [ -n "$s3_access_key" ] && \
-        # Use configuration file
-        # shellcheck disable=SC2154,SC2086
-        set -- s3cmd $s3cmd_options --config "$s3cmd_config" \
-            put "${backups[@]}" "$uri"
-    elif [ -n "$s3_access_key" ]    && \
         [ -n "$s3_secret_key" ] && \
         [ -n "$s3_host" ]       && \
         [ -n "$s3_host_bucket" ]
     then
-        s3_region="${s3_region:-na}" # fallback to 'no available' region
+        s3_region="${s3_region:-na}" # fallback to 'not available' region
         # Use parameters provided from backup script
         # shellcheck disable=SC2154,SC2086
         set -- s3cmd $s3cmd_options \
@@ -62,10 +57,11 @@ tgt_s3cmd() {
             --host-bucket="$s3_host_bucket" \
             put "${backups[@]}" "$uri"
     else
-        # Exit if no configuration
+        # Use configuration file
-        log -p "Error: Bad s3cmd credentials."\
+        s3cmd_config="${s3cmd_comfig:-$HOME/.s3cfg}"
-            "See boring-backup(1) for details" >&2
+        # shellcheck disable=SC2154,SC2086
-        exit 1
+        set -- s3cmd $s3cmd_options --config "$s3cmd_config" \
+            put "${backups[@]}" "$uri"
     fi
 
     echo "Run command: $*" |
@@ -74,7 +70,7 @@ tgt_s3cmd() {
 
     # Upload backups
     # shellcheck disable=SC2154
-    if "$@" 2>> "$__log_file"; then
+    if "$@" 2>> "$log_file"; then
         : # Success
     else
         handle_error \