autoxflate: verify valid compress.deflate_buffer

core/src/plugins/stored/autoxflate/autoxflate-sd.cc

@@ -2,7 +2,7 @@
    BAREOS® - Backup Archiving REcovery Open Sourced
 
    Copyright (C) 2013-2014 Planets Communications B.V.
-   Copyright (C) 2013-2022 Bareos GmbH & Co. KG
+   Copyright (C) 2013-2023 Bareos GmbH & Co. KG
 
    This program is Free Software; you can redistribute it and/or
    modify it under the terms of version three of the GNU Affero General Public
@@ -198,15 +198,13 @@ static bRC newPlugin(PluginContext* ctx)
   memset(p_ctx, 0, sizeof(struct plugin_ctx));
   ctx->plugin_private_context = (void*)p_ctx; /* set our context pointer */
 
-  /*
-   * Only register plugin events we are interested in.
+  /* Only register plugin events we are interested in.
    *
    * bSdEventJobEnd - SD Job finished.
    * bSdEventSetupRecordTranslation - Setup the buffers for doing record
    * translation. bSdEventReadRecordTranslation - Perform read-side record
    * translation. bSdEventWriteRecordTranslation - Perform write-side record
-   * translation.
-   */
+   * translation. */
   bareos_core_functions->registerBareosEvents(
       ctx, 4, bSdEventJobEnd, bSdEventSetupRecordTranslation,
       bSdEventReadRecordTranslation, bSdEventWriteRecordTranslation);
@@ -598,9 +596,17 @@ static bool AutoDeflateRecord(PluginContext* ctx, DeviceControlRecord* dcr)
   nrec = bareos_core_functions->new_record(/* with_data = */ false);
   bareos_core_functions->CopyRecordState(nrec, rec);
 
+  if (!dcr->jcr->compress.deflate_buffer) {
+    Jmsg(ctx, M_FATAL,
+         _("autoxflate-sd: compress.deflate_buffer was not setup "
+           "missing bSdEventSetupRecordTranslation call?\n"));
+    goto bail_out;
+  }
   // Setup the converted DeviceRecord to point with its data buffer to the
   // compression buffer.
   nrec->data = dcr->jcr->compress.deflate_buffer;
+
+
   switch (rec->maskedStream) {
     case STREAM_FILE_DATA:
     case STREAM_WIN32_DATA: