Compatibility with current vmod_blobdigest

as of efa1e7d64f8b1a17a02a9fd30df606804ba40a3b

src/Makefile.am

@@ -8,7 +8,7 @@ bin_PROGRAMS = vmod_get_h
 vmod_get_h_SOURCES = \
 	vmod_get_h.c
 
-vmod_get_h_LDFLAGS = -rdynamic
+vmod_get_h_LDFLAGS = -rdynamic $(VARNISHAPI_LIBS)
 vmod_get_h_LDADD = -ldl
 
 TESTS = \

src/tus_blob.c

 /*-
- * Copyright 2020 UPLEX Nils Goroll Systemoptimierung
+ * Copyright 2020-2023 UPLEX Nils Goroll Systemoptimierung
  * All rights reserved.
  *
  * Author: Nils Goroll <nils.goroll@uplex.de>
@@ -264,6 +264,7 @@ tus_chksum_update(VRT_CTX, const struct tus_chksum *c,
     const void *ptr, size_t l)
 {
 	struct vrt_blob b;
+	struct arg_vmod_blobdigest_digest_update a[1] = {{0}};
 
 	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
 	CHECK_OBJ_NOTNULL(c, VMOD_TUS_CHKSUM_MAGIC);
@@ -273,7 +274,10 @@ tus_chksum_update(VRT_CTX, const struct tus_chksum *c,
 	b.len = l;
 	b.blob = ptr;
 
-	(void) vmod_blobdigest->f_digest_update(ctx, c->digest, &b);
+	a->valid_msg = 1;
+	a->msg = &b;
+
+	(void) vmod_blobdigest->f_digest_update(ctx, c->digest, a);
 }
 
 VCL_BLOB

src/vmod_get_h.c

@@ -31,12 +31,16 @@
 #include <dlfcn.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <assert.h>
 #include <unistd.h>
 #include <string.h>
 
-#include "vdef.h"
-#include "vrt.h"
+#include "cache/cache.h"
+#include "vas.h"
+
+// provide symbols from varnish-cache used by vmods
+const struct body_status BS_NONE[1];
+const struct body_status BS_TAKEN[1];
+const struct body_status BS_ERROR[1];
 
 const struct vrt_blob *vrt_null_blob = &(struct vrt_blob){
 	.type = VRT_NULL_BLOB_TYPE,