Mercurial > dropbear

annotate libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c @ 1019:6c42bab6e081

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merge
author Matt Johnston <matt@ucc.asn.au>
date Fri, 13 Feb 2015 23:15:12 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
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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 * Tom St Denis, [email protected], http://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file der_sequence_free.c
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15 ASN.1 DER, free's a structure allocated by der_decode_sequence_flexi(), Tom St Denis
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16 */
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17
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18 #ifdef LTC_DER
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19
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20 /**
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21 Free memory allocated by der_decode_sequence_flexi()
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22 @param in The list to free
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23 */
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24 void der_sequence_free(ltc_asn1_list *in)
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25 {
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26 ltc_asn1_list *l;
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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_SET:
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48 case LTC_ASN1_SETOF:
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49 case LTC_ASN1_SEQUENCE: break;
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50 case LTC_ASN1_INTEGER : if (in->data != NULL) { mp_clear(in->data); } break;
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51 default : if (in->data != NULL) { XFREE(in->data); }
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52 }
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53
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54 /* move to next and free current */
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55 l = in->next;
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56 free(in);
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57 in = l;
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58 }
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59 }
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60
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61 #endif
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62
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63 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c,v $ */
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64 /* $Revision: 1.3 $ */
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65 /* $Date: 2006/03/31 14:15:35 $ */