Mercurial > dropbear

annotate libtommath/bn_mp_init_multi.c @ 1665:7c17995bcdfb

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Improve address logging on early exit messages (#83) Change 'Early exit' and 'Exit before auth' messages to include the IP address & port as part of the message. This allows log scanning utilities such as 'fail2ban' to obtain the offending IP address as part of the failure event instead of extracting the PID from the message and then scanning the log again for match 'child connection from' messages Signed-off-by: Kevin Darbyshire-Bryant <[email protected]>
author Kevin Darbyshire-Bryant <6500011+ldir-EDB0@users.noreply.github.com>
date Wed, 18 Mar 2020 15:28:56 +0000
parents f52919ffd3b1
children 1051e4eea25a
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1 #include "tommath_private.h"
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2 #ifdef BN_MP_INIT_MULTI_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * SPDX-License-Identifier: Unlicense
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13 */
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14
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15 #include <stdarg.h>
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16
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17 int mp_init_multi(mp_int *mp, ...)
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18 {
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19 mp_err res = MP_OKAY; /* Assume ok until proven otherwise */
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20 int n = 0; /* Number of ok inits */
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21 mp_int *cur_arg = mp;
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22 va_list args;
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23
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24 va_start(args, mp); /* init args to next argument from caller */
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25 while (cur_arg != NULL) {
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26 if (mp_init(cur_arg) != MP_OKAY) {
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27 /* Oops - error! Back-track and mp_clear what we already
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28 succeeded in init-ing, then return error.
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29 */
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30 va_list clean_args;
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32 /* now start cleaning up */
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33 cur_arg = mp;
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34 va_start(clean_args, mp);
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35 while (n-- != 0) {
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36 mp_clear(cur_arg);
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37 cur_arg = va_arg(clean_args, mp_int *);
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38 }
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39 va_end(clean_args);
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40 res = MP_MEM;
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41 break;
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42 }
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43 n++;
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44 cur_arg = va_arg(args, mp_int *);
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45 }
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46 va_end(args);
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47 return res; /* Assumed ok, if error flagged above. */
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48 }
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50 #endif
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51
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52 /* ref: HEAD -> master, tag: v1.1.0 */
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53 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
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54 /* commit time: 2019-01-28 20:32:32 +0100 */