When I use 'svc', which compiled from examples/libmsrpc/test/svcctl/svc.c, I found a bug in listting services:
if there are utf-8 chars(such as Chinese) in services displayname,we can only see a part of the string.

By debugging,I found the bug is from cac_unistr_ascii() function,
------ source/libmsrpc/libmsrpc_internal.c:687
char *cac_unistr_ascii( TALLOC_CTX * mem_ctx, UNISTR src )
{
    char *buf;
    uint32 len;

    if ( !mem_ctx || !src.buffer )
        return NULL;

    len = unistrlen( src.buffer ) + 1;

    buf = TALLOC_ZERO_ARRAY( mem_ctx, char, len );
    if ( !buf )
        return NULL;

    rpcstr_pull( buf, src.buffer, len, -1, STR_TERMINATE );  // the 'len' is too short when conver to  utf-8 : unicode string length is not equal to  utf-8 string length,in this function, I use len*4 as the 3th param.

    return buf;
}
------