Mercurial > dropbear

annotate libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c @ 1734:73646de50f13 DROPBEAR_2020.80

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version 2020.80
author Matt Johnston <matt@ucc.asn.au>
date Fri, 26 Jun 2020 21:45:59 +0800
parents 6dba84798cd5
children
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382
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9 #include "tomcrypt.h"
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10
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11 /**
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12 @file der_sequence_free.c
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13 ASN.1 DER, free's a structure allocated by der_decode_sequence_flexi(), Tom St Denis
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14 */
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15
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16 #ifdef LTC_DER
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17
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18 /**
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19 Free memory allocated by der_decode_sequence_flexi()
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20 @param in The list to free
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21 */
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22 void der_sequence_free(ltc_asn1_list *in)
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23 {
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24 ltc_asn1_list *l;
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25
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26 if (!in) return;
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27
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28 /* walk to the start of the chain */
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29 while (in->prev != NULL || in->parent != NULL) {
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30 if (in->parent != NULL) {
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31 in = in->parent;
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32 } else {
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33 in = in->prev;
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34 }
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35 }
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36
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37 /* now walk the list and free stuff */
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38 while (in != NULL) {
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39 /* is there a child? */
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40 if (in->child) {
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41 /* disconnect */
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42 in->child->parent = NULL;
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43 der_sequence_free(in->child);
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44 }
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45
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46 switch (in->type) {
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47 case LTC_ASN1_SETOF: break;
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48 case LTC_ASN1_INTEGER : if (in->data != NULL) { mp_clear(in->data); } break;
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49 default : if (in->data != NULL) { XFREE(in->data); }
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50 }
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51
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52 /* move to next and free current */
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53 l = in->next;
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54 XFREE(in);
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55 in = l;
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56 }
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57 }
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58
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59 #endif
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60
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61 /* ref: $Format:%D$ */
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62 /* git commit: $Format:%H$ */
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63 /* commit time: $Format:%ai$ */