Samba Backup

2023-07-23 09:37:27 -05:00
parent 0b8e7992e7
commit 6a6368e10f
23 changed files with 1549 additions and 0 deletions
@@ -0,0 +1,71 @@
+#!/command/with-contenv bashio
+# shellcheck shell=bash
+
+# ------------------------------------------------------------------------------
+# Perform a pre-check if the Samba share is configured correctly.
+#
+# Returns 1 in case of a failure
+# ------------------------------------------------------------------------------
+function smb-precheck {
+    local result
+    local shares
+
+    # check if we can access the share at all
+    if ! result=$(eval "${SMB} -c 'exit'"); then
+        bashio::log.warning "$result"
+
+        # host not found
+        if [[ "$result" =~ "NT_STATUS_NOT_FOUND" ]]; then
+            bashio::log.fatal "The provided host cannot be found. If you've specified a DNS name, please try using an IP address instead."
+
+        # host unreachable
+        elif [[ "$result" =~ "NT_STATUS_HOST_UNREACHABLE" ]]; then
+            bashio::log.fatal "The provided host is unreachable. Please check your config and network."
+
+        # SMB1 problem
+        elif [[ "$result" =~ "NT_STATUS_CONNECTION_DISCONNECTED" ]]; then
+            bashio::log.fatal "Cannot access share. It seems that your share only supports insecure SMB protocols."
+            bashio::log.fatal "If you want me to connect, please check the \"compatibility_mode\" option. Use at your own risk."
+
+        # share does not exist
+        elif [[ "$result" =~ "NT_STATUS_BAD_NETWORK_NAME" ]]; then
+            bashio::log.fatal "Cannot access share. It seems that your configured share does not exist."
+
+            # try to find out which shares exist
+            if shares=$(eval "${ALL_SHARES}"); then
+                bashio::log.fatal "I found the following shares on your host. Did you mean one of those?"
+                bashio::log.fatal "$shares"
+            fi
+
+        # access denied
+        elif [[ "$result" =~ "NT_STATUS_ACCESS_DENIED" ]]; then
+            bashio::log.fatal "Cannot access share. Access denied. Please check your share permissions."
+
+        # login failed
+        elif [[ "$result" =~ "NT_STATUS_LOGON_FAILURE" ]]; then
+            bashio::log.fatal "Cannot access share. Login failed. Please check your credentials."
+
+        # unknown reason
+        else
+            bashio::log.fatal "Cannot access share. Unknown reason."
+        fi
+
+        return 1
+    fi
+
+    # check if the target directory exists
+    if ! run-and-log "${SMB} -c 'cd \"${TARGET_DIR}\"'"; then
+        bashio::log.fatal "Target directory does not exist. Please check your config."
+        return 1
+    fi
+
+    # check if we have write permissions
+    touch samba-tmp123
+    if ! run-and-log "${SMB} -c 'cd \"${TARGET_DIR}\"; put samba-tmp123; rm samba-tmp123'"; then
+        bashio::log.fatal "Missing write permissions on target folder. Please check your share settings."
+        return 1
+    fi
+    rm samba-tmp123
+
+    return 0
+}