355 lines
9.2 KiB
C
355 lines
9.2 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <string.h>
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#include <openssl/asn1.h>
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#include <openssl/bytestring.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/obj.h>
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#include <openssl/stack.h>
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#include <openssl/x509.h>
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#include "../internal.h"
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#include "internal.h"
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int X509_NAME_get_text_by_NID(const X509_NAME *name, int nid, char *buf,
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int len) {
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const ASN1_OBJECT *obj;
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obj = OBJ_nid2obj(nid);
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if (obj == NULL) {
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return -1;
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}
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return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
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}
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int X509_NAME_get_text_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
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char *buf, int len) {
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int i = X509_NAME_get_index_by_OBJ(name, obj, -1);
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if (i < 0) {
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return -1;
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}
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const ASN1_STRING *data =
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X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
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unsigned char *text = NULL;
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int ret = -1;
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int text_len = ASN1_STRING_to_UTF8(&text, data);
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// Fail if we could not encode as UTF-8.
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if (text_len < 0) {
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goto out;
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}
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CBS cbs;
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CBS_init(&cbs, text, text_len);
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// Fail if the UTF-8 encoding constains a 0 byte because this is
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// returned as a C string and callers very often do not check.
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if (CBS_contains_zero_byte(&cbs)) {
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goto out;
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}
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// We still support the "pass NULL to find out how much" API
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if (buf != NULL) {
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if (text_len >= len || len <= 0 ||
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!CBS_copy_bytes(&cbs, (uint8_t *)buf, text_len)) {
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goto out;
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}
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// It must be a C string
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buf[text_len] = '\0';
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}
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ret = text_len;
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out:
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OPENSSL_free(text);
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return ret;
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}
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int X509_NAME_entry_count(const X509_NAME *name) {
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if (name == NULL) {
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return 0;
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}
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return (int)sk_X509_NAME_ENTRY_num(name->entries);
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}
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int X509_NAME_get_index_by_NID(const X509_NAME *name, int nid, int lastpos) {
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const ASN1_OBJECT *obj;
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obj = OBJ_nid2obj(nid);
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if (obj == NULL) {
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return -2;
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}
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return X509_NAME_get_index_by_OBJ(name, obj, lastpos);
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}
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// NOTE: you should be passsing -1, not 0 as lastpos
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int X509_NAME_get_index_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
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int lastpos) {
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if (name == NULL) {
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return -1;
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}
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if (lastpos < 0) {
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lastpos = -1;
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}
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const STACK_OF(X509_NAME_ENTRY) *sk = name->entries;
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int n = (int)sk_X509_NAME_ENTRY_num(sk);
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for (lastpos++; lastpos < n; lastpos++) {
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const X509_NAME_ENTRY *ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
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if (OBJ_cmp(ne->object, obj) == 0) {
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return lastpos;
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}
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}
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return -1;
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}
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X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc) {
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if (name == NULL || loc < 0 ||
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sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc) {
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return NULL;
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} else {
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return (sk_X509_NAME_ENTRY_value(name->entries, loc));
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}
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}
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X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc) {
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if (name == NULL || loc < 0 ||
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sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc) {
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return NULL;
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}
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STACK_OF(X509_NAME_ENTRY) *sk = name->entries;
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X509_NAME_ENTRY *ret = sk_X509_NAME_ENTRY_delete(sk, loc);
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size_t n = sk_X509_NAME_ENTRY_num(sk);
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name->modified = 1;
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if ((size_t)loc == n) {
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return ret;
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}
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int set_prev;
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if (loc != 0) {
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set_prev = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
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} else {
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set_prev = ret->set - 1;
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}
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int set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
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// If we removed a singleton RDN, update the RDN indices so they are
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// consecutive again.
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if (set_prev + 1 < set_next) {
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for (size_t i = loc; i < n; i++) {
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sk_X509_NAME_ENTRY_value(sk, i)->set--;
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}
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}
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return ret;
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}
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int X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
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int type, const unsigned char *bytes,
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ossl_ssize_t len, int loc, int set) {
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X509_NAME_ENTRY *ne =
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X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
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if (!ne) {
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return 0;
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}
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int ret = X509_NAME_add_entry(name, ne, loc, set);
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X509_NAME_ENTRY_free(ne);
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return ret;
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}
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int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
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const unsigned char *bytes, ossl_ssize_t len,
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int loc, int set) {
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X509_NAME_ENTRY *ne =
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X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
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if (!ne) {
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return 0;
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}
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int ret = X509_NAME_add_entry(name, ne, loc, set);
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X509_NAME_ENTRY_free(ne);
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return ret;
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}
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int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
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const unsigned char *bytes, ossl_ssize_t len,
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int loc, int set) {
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X509_NAME_ENTRY *ne =
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X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
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if (!ne) {
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return 0;
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}
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int ret = X509_NAME_add_entry(name, ne, loc, set);
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X509_NAME_ENTRY_free(ne);
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return ret;
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}
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// if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
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// guy we are about to stomp on.
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int X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *entry, int loc,
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int set) {
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X509_NAME_ENTRY *new_name = NULL;
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int i, inc;
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STACK_OF(X509_NAME_ENTRY) *sk;
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if (name == NULL) {
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return 0;
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}
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sk = name->entries;
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int n = (int)sk_X509_NAME_ENTRY_num(sk);
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if (loc > n) {
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loc = n;
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} else if (loc < 0) {
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loc = n;
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}
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inc = (set == 0);
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name->modified = 1;
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if (set == -1) {
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if (loc == 0) {
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set = 0;
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inc = 1;
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} else {
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set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
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}
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} else { // if (set >= 0)
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if (loc >= n) {
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if (loc != 0) {
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set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
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} else {
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set = 0;
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}
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} else {
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set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
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}
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}
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if ((new_name = X509_NAME_ENTRY_dup(entry)) == NULL) {
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goto err;
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}
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new_name->set = set;
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if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
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goto err;
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}
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if (inc) {
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n = (int)sk_X509_NAME_ENTRY_num(sk);
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for (i = loc + 1; i < n; i++) {
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sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
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}
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}
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return 1;
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err:
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if (new_name != NULL) {
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X509_NAME_ENTRY_free(new_name);
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}
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return 0;
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}
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X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
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const char *field, int type,
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const unsigned char *bytes,
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ossl_ssize_t len) {
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ASN1_OBJECT *obj;
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X509_NAME_ENTRY *nentry;
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obj = OBJ_txt2obj(field, 0);
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if (obj == NULL) {
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OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
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ERR_add_error_data(2, "name=", field);
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return NULL;
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}
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nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
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ASN1_OBJECT_free(obj);
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return nentry;
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}
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X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
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int type,
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const unsigned char *bytes,
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ossl_ssize_t len) {
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const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
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if (obj == NULL) {
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OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
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return NULL;
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}
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return X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
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}
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X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
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const ASN1_OBJECT *obj, int type,
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const unsigned char *bytes,
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ossl_ssize_t len) {
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X509_NAME_ENTRY *ret;
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if ((ne == NULL) || (*ne == NULL)) {
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if ((ret = X509_NAME_ENTRY_new()) == NULL) {
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return NULL;
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}
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} else {
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ret = *ne;
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}
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if (!X509_NAME_ENTRY_set_object(ret, obj)) {
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goto err;
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}
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if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len)) {
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goto err;
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}
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if ((ne != NULL) && (*ne == NULL)) {
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*ne = ret;
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}
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return ret;
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err:
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if ((ne == NULL) || (ret != *ne)) {
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X509_NAME_ENTRY_free(ret);
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}
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return NULL;
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}
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int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj) {
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if ((ne == NULL) || (obj == NULL)) {
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OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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ASN1_OBJECT_free(ne->object);
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ne->object = OBJ_dup(obj);
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return ((ne->object == NULL) ? 0 : 1);
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}
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int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
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const unsigned char *bytes, ossl_ssize_t len) {
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if ((ne == NULL) || ((bytes == NULL) && (len != 0))) {
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return 0;
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}
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if ((type > 0) && (type & MBSTRING_FLAG)) {
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return ASN1_STRING_set_by_NID(&ne->value, bytes, len, type,
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OBJ_obj2nid(ne->object))
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? 1
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: 0;
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}
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if (len < 0) {
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len = strlen((const char *)bytes);
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}
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if (!ASN1_STRING_set(ne->value, bytes, len)) {
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return 0;
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}
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if (type != V_ASN1_UNDEF) {
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ne->value->type = type;
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}
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return 1;
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}
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ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne) {
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if (ne == NULL) {
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return NULL;
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}
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return ne->object;
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}
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ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne) {
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if (ne == NULL) {
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return NULL;
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}
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return ne->value;
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}
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