view libtommath/bn_mp_fwrite.c @ 1857:6022df862942

Use DSCP for IP QoS traffic classes The previous TOS values are deprecated and not used by modern traffic classifiers. This sets AF21 for "interactive" traffic (with a tty). Non-tty traffic sets AF11 - that indicates high throughput but is not lowest priority (which would be CS1 or LE). This differs from the CS1 used by OpenSSH, it lets interactive git over SSH have higher priority than background least effort traffic. Dropbear's settings here should be suitable with the diffservs used by CAKE qdisc.
author Matt Johnston <matt@ucc.asn.au>
date Tue, 25 Jan 2022 17:32:20 +0800
parents 1051e4eea25a
children
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#include "tommath_private.h"
#ifdef BN_MP_FWRITE_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

#ifndef MP_NO_FILE
mp_err mp_fwrite(const mp_int *a, int radix, FILE *stream)
{
   char *buf;
   mp_err err;
   int len;
   size_t written;

   /* TODO: this function is not in this PR */
   if (MP_HAS(MP_RADIX_SIZE_OVERESTIMATE)) {
      /* if ((err = mp_radix_size_overestimate(&t, base, &len)) != MP_OKAY)      goto LBL_ERR; */
   } else {
      if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
         return err;
      }
   }

   buf = (char *) MP_MALLOC((size_t)len);
   if (buf == NULL) {
      return MP_MEM;
   }

   if ((err = mp_to_radix(a, buf, (size_t)len, &written, radix)) != MP_OKAY) {
      goto LBL_ERR;
   }

   if (fwrite(buf, written, 1uL, stream) != 1uL) {
      err = MP_ERR;
      goto LBL_ERR;
   }
   err = MP_OKAY;


LBL_ERR:
   MP_FREE_BUFFER(buf, (size_t)len);
   return err;
}
#endif

#endif