[master] 0b374145f Add BLOB to STRING folder, using Structured Fields (upcoming RFC):

[Poul-Henning Kamp]

commit 0b374145f5bf8ce9fe83abfd797bba0b6312ed54
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Fri Aug 7 08:34:37 2020 +0000

    Add  BLOB to STRING folder, using Structured Fields (upcoming RFC):
    
            ':' base64(blob) ':'

diff --git a/bin/varnishd/cache/cache_vrt.c b/bin/varnishd/cache/cache_vrt.c
index 4229d8e53..7da0734ab 100644
--- a/bin/varnishd/cache/cache_vrt.c
+++ b/bin/varnishd/cache/cache_vrt.c
@@ -39,6 +39,7 @@
 #include "vav.h"
 #include "vcl.h"
 #include "vct.h"
+#include "venc.h"
 #include "vend.h"
 #include "vrt_obj.h"
 #include "vsa.h"
@@ -759,6 +760,22 @@ VRT_BOOL_string(VCL_BOOL val)
 	return (val ? "true" : "false");
 }
 
+VCL_STRING v_matchproto_()
+VRT_BLOB_string(VRT_CTX, VCL_BLOB val)
+{
+	struct vsb vsb[1];
+	const char *s;
+
+	if (val == NULL)
+		return (NULL);
+	WS_VSB_new(vsb, ctx->ws);
+	VSB_putc(vsb, ':');
+	VENC_Encode_Base64(vsb, val->blob, val->len);
+	VSB_putc(vsb, ':');
+	s = WS_VSB_finish(vsb, ctx->ws, NULL);
+	return (s);
+}
+
 /*--------------------------------------------------------------------*/
 
 VCL_VOID
diff --git a/lib/libvcc/vcc_types.c b/lib/libvcc/vcc_types.c
index dace016e9..576e55cee 100644
--- a/lib/libvcc/vcc_types.c
+++ b/lib/libvcc/vcc_types.c
@@ -76,6 +76,7 @@ const struct type BACKEND[1] = {{
 const struct type BLOB[1] = {{
 	.magic =		TYPE_MAGIC,
 	.name =			"BLOB",
+	.tostring =		"VRT_BLOB_string(ctx, \v1)",
 }};
 
 const struct type BODY[1] = {{