On Wed, Jul 3, 2024 at 8:58 AM Ruediger Pluem <rpl...@apache.org> wrote:
>
> On 7/3/24 2:59 AM, Yann Ylavic wrote:
> > On Tue, Jul 2, 2024 at 10:57 AM Ruediger Pluem <rpl...@apache.org> wrote:
> >>
> >> Updated patch.
[]
> >>              const char *dump = "";
> >>              if (APLOG_CS_IS_LEVEL(c, s, APLOG_TRACE7)) {
> >>                  if (argp != NULL)
> >> @@ -2400,23 +2413,28 @@
> >>                      dump = "(Oops, no memory buffer?)";
> >>              }
> >>              ap_log_cserror(APLOG_MARK, APLOG_TRACE4, 0, c, s,
> >> -                    "%s: %s %ld/%d bytes %s BIO#%pp [mem: %pp] %s",
> >> +                    "%s: %s %" APR_SIZE_T_FMT "/%" APR_SIZE_T_FMT
> >> +                    " bytes %s BIO#%pp [mem: %pp] %s",
> >>                      MODSSL_LIBRARY_NAME,
> >>                      (cmd == (BIO_CB_WRITE|BIO_CB_RETURN) ? "write" : 
> >> "read"),
> >> -                    (long)rc, argi, (cmd == (BIO_CB_WRITE|BIO_CB_RETURN) 
> >> ? "to" : "from"),
> >> +                    actual_len, requested_len,
> >> +                    (cmd == (BIO_CB_WRITE|BIO_CB_RETURN) ? "to" : "from"),
> >>                      bio, argp, dump);
> >>              if (*dump != '\0' && argp != NULL)
> >> -                ssl_io_data_dump(c, s, argp, rc);
> >> +                ssl_io_data_dump(c, s, argp, actual_len);
> > And here:
> >                    long dump_len = (actual_len >= APR_UINT16_MAX
> >                                     ? APR_UINT16_MAX
> >                                     : actual_len);
>
> Hm. As you point out: SSL records should be of limited length anyway, but if 
> we really truncate the output shouldn't we log this?
> A log message like: Dump truncated to first XXX bytes?

Something like this to initialize "dump" above?

            if (APLOG_CS_IS_LEVEL(c, s, APLOG_TRACE7)) {
                if (argp == NULL)
                    dump = "(Oops, no memory buffer?)";
                else if (actual_len > MODSSL_IO_DUMP_MAX)
                    dump = "(BIO dump follows, truncated to "
                             APR_STRINGIFY(MODSSL_IO_DUMP_MAX) ")";
                else
                    dump = "(BIO dump follows)";
            }

where we'd "#define MODSSL_IO_DUMP_MAX APR_UINT16_MAX" and use it
everywhere eventually.

>
> >                    ssl_io_data_dump(c, s, argp, dump_len);
> >>          }
> >>          else {
> >>              ap_log_cserror(APLOG_MARK, APLOG_TRACE4, 0, c, s,
> >> -                    "%s: I/O error, %d bytes expected to %s on BIO#%pp 
> >> [mem: %pp]",
> >> -                    MODSSL_LIBRARY_NAME, argi,
> >> +                    "%s: I/O error, %" APR_SIZE_T_FMT
> >> +                    " bytes expected to %s on BIO#%pp [mem: %pp]",
> >> +                    MODSSL_LIBRARY_NAME, requested_len,
> >>                      (cmd == (BIO_CB_WRITE|BIO_CB_RETURN) ? "write" : 
> >> "read"),
> >>                      bio, argp);
> >>          }
> >>      }
> >>      return rc;
> >> +#undef requested_len
> >> +#undef actual_len
> >>  }
> > ?


Cheers;
Yann.

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