[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 | /* Part of the code in here was originally in conf.c, which is now removed */
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| 11 |
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| 12 | #include <stdlib.h>
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| 13 | #include <string.h>
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| 14 | #include <openssl/conf.h>
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| 15 | #include <openssl/conf_api.h>
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| 16 | #include "e_os.h"
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| 17 |
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| 18 | static void value_free_hash(const CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf);
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| 19 | static void value_free_stack_doall(CONF_VALUE *a);
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| 20 |
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| 21 | /* Up until OpenSSL 0.9.5a, this was get_section */
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| 22 | CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section)
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| 23 | {
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| 24 | CONF_VALUE *v, vv;
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| 25 |
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| 26 | if ((conf == NULL) || (section == NULL))
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| 27 | return (NULL);
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| 28 | vv.name = NULL;
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| 29 | vv.section = (char *)section;
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| 30 | v = lh_CONF_VALUE_retrieve(conf->data, &vv);
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| 31 | return (v);
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| 32 | }
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| 33 |
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| 34 | /* Up until OpenSSL 0.9.5a, this was CONF_get_section */
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| 35 | STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf,
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| 36 | const char *section)
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| 37 | {
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| 38 | CONF_VALUE *v;
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| 39 |
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| 40 | v = _CONF_get_section(conf, section);
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| 41 | if (v != NULL)
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| 42 | return ((STACK_OF(CONF_VALUE) *)v->value);
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| 43 | else
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| 44 | return (NULL);
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| 45 | }
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| 46 |
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| 47 | int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
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| 48 | {
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| 49 | CONF_VALUE *v = NULL;
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| 50 | STACK_OF(CONF_VALUE) *ts;
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| 51 |
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| 52 | ts = (STACK_OF(CONF_VALUE) *)section->value;
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| 53 |
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| 54 | value->section = section->section;
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| 55 | if (!sk_CONF_VALUE_push(ts, value)) {
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| 56 | return 0;
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| 57 | }
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| 58 |
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| 59 | v = lh_CONF_VALUE_insert(conf->data, value);
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| 60 | if (v != NULL) {
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| 61 | (void)sk_CONF_VALUE_delete_ptr(ts, v);
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| 62 | OPENSSL_free(v->name);
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| 63 | OPENSSL_free(v->value);
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| 64 | OPENSSL_free(v);
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| 65 | }
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| 66 | return 1;
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| 67 | }
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| 68 |
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| 69 | char *_CONF_get_string(const CONF *conf, const char *section,
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| 70 | const char *name)
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| 71 | {
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| 72 | CONF_VALUE *v, vv;
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| 73 | char *p;
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| 74 |
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| 75 | if (name == NULL)
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| 76 | return (NULL);
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| 77 | if (conf != NULL) {
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| 78 | if (section != NULL) {
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| 79 | vv.name = (char *)name;
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| 80 | vv.section = (char *)section;
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| 81 | v = lh_CONF_VALUE_retrieve(conf->data, &vv);
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| 82 | if (v != NULL)
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| 83 | return (v->value);
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| 84 | if (strcmp(section, "ENV") == 0) {
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| 85 | p = getenv(name);
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| 86 | if (p != NULL)
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| 87 | return (p);
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| 88 | }
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| 89 | }
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| 90 | vv.section = "default";
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| 91 | vv.name = (char *)name;
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| 92 | v = lh_CONF_VALUE_retrieve(conf->data, &vv);
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| 93 | if (v != NULL)
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| 94 | return (v->value);
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| 95 | else
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| 96 | return (NULL);
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| 97 | } else
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| 98 | return (getenv(name));
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| 99 | }
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| 100 |
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| 101 | static unsigned long conf_value_hash(const CONF_VALUE *v)
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| 102 | {
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| 103 | return (OPENSSL_LH_strhash(v->section) << 2) ^ OPENSSL_LH_strhash(v->name);
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| 104 | }
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| 105 |
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| 106 | static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b)
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| 107 | {
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| 108 | int i;
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| 109 |
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| 110 | if (a->section != b->section) {
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| 111 | i = strcmp(a->section, b->section);
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| 112 | if (i)
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| 113 | return (i);
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| 114 | }
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| 115 |
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| 116 | if ((a->name != NULL) && (b->name != NULL)) {
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| 117 | i = strcmp(a->name, b->name);
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| 118 | return (i);
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| 119 | } else if (a->name == b->name)
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| 120 | return (0);
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| 121 | else
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| 122 | return ((a->name == NULL) ? -1 : 1);
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| 123 | }
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| 124 |
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| 125 | int _CONF_new_data(CONF *conf)
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| 126 | {
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| 127 | if (conf == NULL) {
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| 128 | return 0;
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| 129 | }
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| 130 | if (conf->data == NULL) {
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| 131 | conf->data = lh_CONF_VALUE_new(conf_value_hash, conf_value_cmp);
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| 132 | if (conf->data == NULL)
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| 133 | return 0;
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| 134 | }
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| 135 | return 1;
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| 136 | }
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| 137 |
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| 138 | typedef LHASH_OF(CONF_VALUE) LH_CONF_VALUE;
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| 139 |
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| 140 | IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, LH_CONF_VALUE);
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| 141 |
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| 142 | void _CONF_free_data(CONF *conf)
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| 143 | {
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| 144 | if (conf == NULL || conf->data == NULL)
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| 145 | return;
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| 146 |
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| 147 | /* evil thing to make sure the 'OPENSSL_free()' works as expected */
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| 148 | lh_CONF_VALUE_set_down_load(conf->data, 0);
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| 149 | lh_CONF_VALUE_doall_LH_CONF_VALUE(conf->data, value_free_hash, conf->data);
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| 150 |
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| 151 | /*
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| 152 | * We now have only 'section' entries in the hash table. Due to problems
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| 153 | * with
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| 154 | */
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| 155 |
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| 156 | lh_CONF_VALUE_doall(conf->data, value_free_stack_doall);
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| 157 | lh_CONF_VALUE_free(conf->data);
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| 158 | }
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| 159 |
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| 160 | static void value_free_hash(const CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf)
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| 161 | {
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| 162 | if (a->name != NULL)
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| 163 | (void)lh_CONF_VALUE_delete(conf, a);
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| 164 | }
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| 165 |
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| 166 | static void value_free_stack_doall(CONF_VALUE *a)
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| 167 | {
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| 168 | CONF_VALUE *vv;
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| 169 | STACK_OF(CONF_VALUE) *sk;
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| 170 | int i;
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| 171 |
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| 172 | if (a->name != NULL)
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| 173 | return;
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| 174 |
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| 175 | sk = (STACK_OF(CONF_VALUE) *)a->value;
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| 176 | for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) {
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| 177 | vv = sk_CONF_VALUE_value(sk, i);
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| 178 | OPENSSL_free(vv->value);
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| 179 | OPENSSL_free(vv->name);
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| 180 | OPENSSL_free(vv);
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| 181 | }
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| 182 | sk_CONF_VALUE_free(sk);
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| 183 | OPENSSL_free(a->section);
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| 184 | OPENSSL_free(a);
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| 185 | }
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| 186 |
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| 187 | /* Up until OpenSSL 0.9.5a, this was new_section */
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| 188 | CONF_VALUE *_CONF_new_section(CONF *conf, const char *section)
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| 189 | {
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| 190 | STACK_OF(CONF_VALUE) *sk = NULL;
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| 191 | int i;
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| 192 | CONF_VALUE *v = NULL, *vv;
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| 193 |
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| 194 | if ((sk = sk_CONF_VALUE_new_null()) == NULL)
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| 195 | goto err;
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| 196 | if ((v = OPENSSL_malloc(sizeof(*v))) == NULL)
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| 197 | goto err;
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| 198 | i = strlen(section) + 1;
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| 199 | if ((v->section = OPENSSL_malloc(i)) == NULL)
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| 200 | goto err;
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| 201 |
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| 202 | memcpy(v->section, section, i);
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| 203 | v->name = NULL;
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| 204 | v->value = (char *)sk;
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| 205 |
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| 206 | vv = lh_CONF_VALUE_insert(conf->data, v);
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| 207 | OPENSSL_assert(vv == NULL);
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| 208 | return v;
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| 209 |
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| 210 | err:
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| 211 | sk_CONF_VALUE_free(sk);
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| 212 | OPENSSL_free(v);
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| 213 | return NULL;
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| 214 | }
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