cli/show: If a leaf part has children, show them instead of omitting

Until we did PKCS#7 unwrapping, no leaf MIME part could have a child.

Now, we treat the unwrapped MIME part as the child of the PKCS#7
SignedData object.  So in that case, we want to show it instead of
deliberately omitting the content.

This fixes the test of the protected subject in
id:smime-onepart-signed@protected-headers.example.

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>

1 files changed, 10 insertions, 1 deletions

diff --git a/notmuch-show.c b/notmuch-show.c
index ab1cd144..36265043 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -759,7 +759,16 @@ format_part_sprinter (const void *ctx, sprinter_t *sp, mime_node_t *node,
 	    sp->string_len (sp, (char *) part_content->data, part_content->len);
 	    g_object_unref (stream_memory);
 	} else {
-	    format_omitted_part_meta_sprinter (sp, meta, GMIME_PART (node->part));
+	    /* if we have a child part despite being a standard
+	     * (non-multipart) MIME part, that means there is
+	     * something to unwrap, which we will present in
+	     * content: */
+	    if (node->nchildren) {
+		sp->map_key (sp, "content");
+		sp->begin_list (sp);
+		nclose = 1;
+	    } else
+		format_omitted_part_meta_sprinter (sp, meta, GMIME_PART (node->part));
 	}
     } else if (GMIME_IS_MULTIPART (node->part)) {
 	sp->map_key (sp, "content");