Mercurial > dropbear
annotate libtomcrypt/src/pk/asn1/der/sequence/der_sequence_free.c @ 1722:912c8ca0728f
Added signature for changeset 4877afd51e04
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 15 Jun 2020 23:51:45 +0800 |
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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: $Format:%ai$ */ |