[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <openssl/stack.h>
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| 12 | #include "internal/cryptlib.h"
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| 13 | #include <openssl/asn1.h>
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| 14 | #include <openssl/objects.h>
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| 15 | #include <openssl/evp.h>
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| 16 | #include <openssl/x509.h>
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| 17 | #include "internal/x509_int.h"
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| 18 |
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| 19 | int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
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| 20 | {
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| 21 | ASN1_OBJECT *obj;
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| 22 |
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| 23 | obj = OBJ_nid2obj(nid);
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| 24 | if (obj == NULL)
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| 25 | return (-1);
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| 26 | return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
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| 27 | }
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| 28 |
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| 29 | int X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, char *buf,
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| 30 | int len)
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| 31 | {
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| 32 | int i;
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| 33 | const ASN1_STRING *data;
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| 34 |
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| 35 | i = X509_NAME_get_index_by_OBJ(name, obj, -1);
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| 36 | if (i < 0)
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| 37 | return (-1);
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| 38 | data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
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| 39 | i = (data->length > (len - 1)) ? (len - 1) : data->length;
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| 40 | if (buf == NULL)
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| 41 | return (data->length);
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| 42 | memcpy(buf, data->data, i);
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| 43 | buf[i] = '\0';
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| 44 | return (i);
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| 45 | }
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| 46 |
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| 47 | int X509_NAME_entry_count(const X509_NAME *name)
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| 48 | {
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| 49 | if (name == NULL)
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| 50 | return (0);
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| 51 | return (sk_X509_NAME_ENTRY_num(name->entries));
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| 52 | }
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| 53 |
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| 54 | int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
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| 55 | {
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| 56 | ASN1_OBJECT *obj;
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| 57 |
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| 58 | obj = OBJ_nid2obj(nid);
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| 59 | if (obj == NULL)
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| 60 | return (-2);
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| 61 | return (X509_NAME_get_index_by_OBJ(name, obj, lastpos));
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| 62 | }
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| 63 |
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| 64 | /* NOTE: you should be passing -1, not 0 as lastpos */
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| 65 | int X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int lastpos)
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| 66 | {
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| 67 | int n;
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| 68 | X509_NAME_ENTRY *ne;
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| 69 | STACK_OF(X509_NAME_ENTRY) *sk;
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| 70 |
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| 71 | if (name == NULL)
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| 72 | return (-1);
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| 73 | if (lastpos < 0)
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| 74 | lastpos = -1;
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| 75 | sk = name->entries;
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| 76 | n = sk_X509_NAME_ENTRY_num(sk);
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| 77 | for (lastpos++; lastpos < n; lastpos++) {
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| 78 | ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
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| 79 | if (OBJ_cmp(ne->object, obj) == 0)
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| 80 | return (lastpos);
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| 81 | }
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| 82 | return (-1);
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| 83 | }
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| 84 |
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| 85 | X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc)
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| 86 | {
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| 87 | if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
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| 88 | || loc < 0)
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| 89 | return (NULL);
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| 90 | else
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| 91 | return (sk_X509_NAME_ENTRY_value(name->entries, loc));
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| 92 | }
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| 93 |
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| 94 | X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
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| 95 | {
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| 96 | X509_NAME_ENTRY *ret;
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| 97 | int i, n, set_prev, set_next;
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| 98 | STACK_OF(X509_NAME_ENTRY) *sk;
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| 99 |
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| 100 | if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
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| 101 | || loc < 0)
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| 102 | return (NULL);
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| 103 | sk = name->entries;
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| 104 | ret = sk_X509_NAME_ENTRY_delete(sk, loc);
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| 105 | n = sk_X509_NAME_ENTRY_num(sk);
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| 106 | name->modified = 1;
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| 107 | if (loc == n)
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| 108 | return (ret);
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| 109 |
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| 110 | /* else we need to fixup the set field */
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| 111 | if (loc != 0)
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| 112 | set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
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| 113 | else
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| 114 | set_prev = ret->set - 1;
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| 115 | set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
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| 116 |
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| 117 | /*-
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| 118 | * set_prev is the previous set
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| 119 | * set is the current set
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| 120 | * set_next is the following
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| 121 | * prev 1 1 1 1 1 1 1 1
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| 122 | * set 1 1 2 2
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| 123 | * next 1 1 2 2 2 2 3 2
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| 124 | * so basically only if prev and next differ by 2, then
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| 125 | * re-number down by 1
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| 126 | */
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| 127 | if (set_prev + 1 < set_next)
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| 128 | for (i = loc; i < n; i++)
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| 129 | sk_X509_NAME_ENTRY_value(sk, i)->set--;
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| 130 | return (ret);
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| 131 | }
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| 132 |
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| 133 | int X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int type,
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| 134 | const unsigned char *bytes, int len, int loc,
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| 135 | int set)
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| 136 | {
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| 137 | X509_NAME_ENTRY *ne;
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| 138 | int ret;
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| 139 | ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
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| 140 | if (!ne)
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| 141 | return 0;
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| 142 | ret = X509_NAME_add_entry(name, ne, loc, set);
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| 143 | X509_NAME_ENTRY_free(ne);
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| 144 | return ret;
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| 145 | }
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| 146 |
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| 147 | int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
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| 148 | const unsigned char *bytes, int len, int loc,
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| 149 | int set)
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| 150 | {
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| 151 | X509_NAME_ENTRY *ne;
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| 152 | int ret;
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| 153 | ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
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| 154 | if (!ne)
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| 155 | return 0;
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| 156 | ret = X509_NAME_add_entry(name, ne, loc, set);
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| 157 | X509_NAME_ENTRY_free(ne);
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| 158 | return ret;
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| 159 | }
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| 160 |
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| 161 | int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
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| 162 | const unsigned char *bytes, int len, int loc,
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| 163 | int set)
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| 164 | {
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| 165 | X509_NAME_ENTRY *ne;
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| 166 | int ret;
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| 167 | ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
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| 168 | if (!ne)
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| 169 | return 0;
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| 170 | ret = X509_NAME_add_entry(name, ne, loc, set);
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| 171 | X509_NAME_ENTRY_free(ne);
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| 172 | return ret;
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| 173 | }
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| 174 |
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| 175 | /*
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| 176 | * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
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| 177 | * guy we are about to stomp on.
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| 178 | */
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| 179 | int X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *ne, int loc,
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| 180 | int set)
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| 181 | {
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| 182 | X509_NAME_ENTRY *new_name = NULL;
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| 183 | int n, i, inc;
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| 184 | STACK_OF(X509_NAME_ENTRY) *sk;
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| 185 |
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| 186 | if (name == NULL)
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| 187 | return (0);
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| 188 | sk = name->entries;
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| 189 | n = sk_X509_NAME_ENTRY_num(sk);
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| 190 | if (loc > n)
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| 191 | loc = n;
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| 192 | else if (loc < 0)
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| 193 | loc = n;
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| 194 |
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| 195 | name->modified = 1;
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| 196 |
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| 197 | if (set == -1) {
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| 198 | if (loc == 0) {
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| 199 | set = 0;
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| 200 | inc = 1;
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| 201 | } else {
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| 202 | set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
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| 203 | inc = 0;
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| 204 | }
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| 205 | } else { /* if (set >= 0) */
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| 206 |
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| 207 | if (loc >= n) {
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| 208 | if (loc != 0)
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| 209 | set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
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| 210 | else
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| 211 | set = 0;
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| 212 | } else
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| 213 | set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
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| 214 | inc = (set == 0) ? 1 : 0;
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| 215 | }
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| 216 |
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| 217 | /*
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| 218 | * X509_NAME_ENTRY_dup is ASN1 generated code, that can't be easily
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| 219 | * const'ified; harmless cast as dup() don't modify its input.
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| 220 | */
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| 221 | if ((new_name = X509_NAME_ENTRY_dup((X509_NAME_ENTRY *)ne)) == NULL)
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| 222 | goto err;
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| 223 | new_name->set = set;
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| 224 | if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
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| 225 | X509err(X509_F_X509_NAME_ADD_ENTRY, ERR_R_MALLOC_FAILURE);
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| 226 | goto err;
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| 227 | }
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| 228 | if (inc) {
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| 229 | n = sk_X509_NAME_ENTRY_num(sk);
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| 230 | for (i = loc + 1; i < n; i++)
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| 231 | sk_X509_NAME_ENTRY_value(sk, i - 1)->set += 1;
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| 232 | }
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| 233 | return (1);
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| 234 | err:
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| 235 | X509_NAME_ENTRY_free(new_name);
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| 236 | return (0);
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| 237 | }
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| 238 |
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| 239 | X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
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| 240 | const char *field, int type,
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| 241 | const unsigned char *bytes,
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| 242 | int len)
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| 243 | {
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| 244 | ASN1_OBJECT *obj;
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| 245 | X509_NAME_ENTRY *nentry;
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| 246 |
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| 247 | obj = OBJ_txt2obj(field, 0);
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| 248 | if (obj == NULL) {
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| 249 | X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
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| 250 | X509_R_INVALID_FIELD_NAME);
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| 251 | ERR_add_error_data(2, "name=", field);
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| 252 | return (NULL);
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| 253 | }
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| 254 | nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
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| 255 | ASN1_OBJECT_free(obj);
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| 256 | return nentry;
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| 257 | }
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| 258 |
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| 259 | X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
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| 260 | int type,
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| 261 | const unsigned char *bytes,
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| 262 | int len)
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| 263 | {
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| 264 | ASN1_OBJECT *obj;
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| 265 | X509_NAME_ENTRY *nentry;
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| 266 |
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| 267 | obj = OBJ_nid2obj(nid);
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| 268 | if (obj == NULL) {
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| 269 | X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID, X509_R_UNKNOWN_NID);
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| 270 | return (NULL);
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| 271 | }
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| 272 | nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
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| 273 | ASN1_OBJECT_free(obj);
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| 274 | return nentry;
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| 275 | }
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| 276 |
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| 277 | X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
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| 278 | const ASN1_OBJECT *obj, int type,
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| 279 | const unsigned char *bytes,
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| 280 | int len)
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| 281 | {
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| 282 | X509_NAME_ENTRY *ret;
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| 283 |
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| 284 | if ((ne == NULL) || (*ne == NULL)) {
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| 285 | if ((ret = X509_NAME_ENTRY_new()) == NULL)
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| 286 | return (NULL);
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| 287 | } else
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| 288 | ret = *ne;
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| 289 |
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| 290 | if (!X509_NAME_ENTRY_set_object(ret, obj))
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| 291 | goto err;
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| 292 | if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
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| 293 | goto err;
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| 294 |
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| 295 | if ((ne != NULL) && (*ne == NULL))
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| 296 | *ne = ret;
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| 297 | return (ret);
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| 298 | err:
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| 299 | if ((ne == NULL) || (ret != *ne))
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| 300 | X509_NAME_ENTRY_free(ret);
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| 301 | return (NULL);
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| 302 | }
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| 303 |
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| 304 | int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
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| 305 | {
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| 306 | if ((ne == NULL) || (obj == NULL)) {
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| 307 | X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,
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| 308 | ERR_R_PASSED_NULL_PARAMETER);
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| 309 | return (0);
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| 310 | }
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| 311 | ASN1_OBJECT_free(ne->object);
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| 312 | ne->object = OBJ_dup(obj);
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| 313 | return ((ne->object == NULL) ? 0 : 1);
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| 314 | }
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| 315 |
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| 316 | int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
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| 317 | const unsigned char *bytes, int len)
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| 318 | {
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| 319 | int i;
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| 320 |
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| 321 | if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
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| 322 | return (0);
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| 323 | if ((type > 0) && (type & MBSTRING_FLAG))
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| 324 | return ASN1_STRING_set_by_NID(&ne->value, bytes,
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| 325 | len, type,
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| 326 | OBJ_obj2nid(ne->object)) ? 1 : 0;
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| 327 | if (len < 0)
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| 328 | len = strlen((const char *)bytes);
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| 329 | i = ASN1_STRING_set(ne->value, bytes, len);
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| 330 | if (!i)
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| 331 | return (0);
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| 332 | if (type != V_ASN1_UNDEF) {
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| 333 | if (type == V_ASN1_APP_CHOOSE)
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| 334 | ne->value->type = ASN1_PRINTABLE_type(bytes, len);
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| 335 | else
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| 336 | ne->value->type = type;
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| 337 | }
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| 338 | return (1);
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| 339 | }
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| 340 |
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| 341 | ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne)
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| 342 | {
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| 343 | if (ne == NULL)
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| 344 | return (NULL);
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| 345 | return (ne->object);
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| 346 | }
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| 347 |
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| 348 | ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne)
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| 349 | {
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| 350 | if (ne == NULL)
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| 351 | return (NULL);
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| 352 | return (ne->value);
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| 353 | }
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| 354 |
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| 355 | int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
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| 356 | {
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| 357 | return ne->set;
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| 358 | }
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