Do not allow empty DoH endpoints to be added

It was possible to specify empty DoH endpoint in BIND's configuration
file: that was an error, we should not allow doing so.

diff --git a/lib/isc/netmgr/http.c b/lib/isc/netmgr/http.c
index 8ac2dd5ed8df2d04c1a1cef57d64a9e1df418f44..599dd861114121d8e4e6fae663bbd638977e6fcb 100644 (file)
--- a/lib/isc/netmgr/http.c
+++ b/lib/isc/netmgr/http.c
@@ -2205,6 +2205,7 @@ isc_nm_http_endpoint(isc_nmsocket_t *sock, const char *uri, isc_nm_recv_cb_t cb,
 
        REQUIRE(VALID_NMSOCK(sock));
        REQUIRE(sock->type == isc_nm_httplistener);
+       REQUIRE(uri != NULL && *uri != '\0');
 
        httpcbarg = isc_mem_get(sock->mgr->mctx, sizeof(isc_nm_httpcbarg_t));
        *httpcbarg = (isc_nm_httpcbarg_t){ .cb = cb, .cbarg = cbarg };