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/* $OpenBSD: v3_akey.c,v 1.17 2015/09/30 18:41:06 jsing Exp $ */ |
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
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* project 1999. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* licensing@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <openssl/asn1.h> |
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#include <openssl/asn1t.h> |
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#include <openssl/conf.h> |
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#include <openssl/err.h> |
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#include <openssl/x509v3.h> |
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static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
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AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist); |
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static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
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X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values); |
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const X509V3_EXT_METHOD v3_akey_id = { |
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.ext_nid = NID_authority_key_identifier, |
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.ext_flags = X509V3_EXT_MULTILINE, |
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.it = ASN1_ITEM_ref(AUTHORITY_KEYID), |
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.ext_new = NULL, |
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.ext_free = NULL, |
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.d2i = NULL, |
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.i2d = NULL, |
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.i2s = NULL, |
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.s2i = NULL, |
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.i2v = (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID, |
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.v2i = (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID, |
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.i2r = NULL, |
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.r2i = NULL, |
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.usr_data = NULL, |
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}; |
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static |
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STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
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AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist) |
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{ |
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char *tmp; |
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if (akeyid->keyid) { |
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tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length); |
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X509V3_add_value("keyid", tmp, &extlist); |
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free(tmp); |
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} |
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if (akeyid->issuer) |
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extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist); |
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if (akeyid->serial) { |
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tmp = hex_to_string(akeyid->serial->data, |
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akeyid->serial->length); |
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X509V3_add_value("serial", tmp, &extlist); |
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free(tmp); |
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} |
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return extlist; |
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} |
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/* Currently two options: |
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* keyid: use the issuers subject keyid, the value 'always' means its is |
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* an error if the issuer certificate doesn't have a key id. |
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* issuer: use the issuers cert issuer and serial number. The default is |
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* to only use this if keyid is not present. With the option 'always' |
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* this is always included. |
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*/ |
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static AUTHORITY_KEYID * |
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v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, |
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STACK_OF(CONF_VALUE) *values) |
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{ |
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char keyid = 0, issuer = 0; |
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int i; |
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CONF_VALUE *cnf; |
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ASN1_OCTET_STRING *ikeyid = NULL; |
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X509_NAME *isname = NULL; |
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STACK_OF(GENERAL_NAME) *gens = NULL; |
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GENERAL_NAME *gen = NULL; |
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ASN1_INTEGER *serial = NULL; |
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X509_EXTENSION *ext; |
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X509 *cert; |
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AUTHORITY_KEYID *akeyid = NULL; |
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for (i = 0; i < sk_CONF_VALUE_num(values); i++) { |
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cnf = sk_CONF_VALUE_value(values, i); |
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if (!strcmp(cnf->name, "keyid")) { |
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keyid = 1; |
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if (cnf->value && !strcmp(cnf->value, "always")) |
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keyid = 2; |
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} |
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else if (!strcmp(cnf->name, "issuer")) { |
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issuer = 1; |
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if (cnf->value && !strcmp(cnf->value, "always")) |
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issuer = 2; |
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} else { |
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, |
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X509V3_R_UNKNOWN_OPTION); |
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ERR_asprintf_error_data("name=%s", cnf->name); |
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return NULL; |
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} |
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} |
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if (!ctx || !ctx->issuer_cert) { |
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if (ctx && (ctx->flags == CTX_TEST)) |
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return AUTHORITY_KEYID_new(); |
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, |
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X509V3_R_NO_ISSUER_CERTIFICATE); |
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return NULL; |
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} |
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cert = ctx->issuer_cert; |
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if (keyid) { |
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i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1); |
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if ((i >= 0) && (ext = X509_get_ext(cert, i))) |
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ikeyid = X509V3_EXT_d2i(ext); |
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if (keyid == 2 && !ikeyid) { |
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, |
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X509V3_R_UNABLE_TO_GET_ISSUER_KEYID); |
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return NULL; |
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} |
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} |
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if ((issuer && !ikeyid) || (issuer == 2)) { |
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isname = X509_NAME_dup(X509_get_issuer_name(cert)); |
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serial = ASN1_INTEGER_dup(X509_get_serialNumber(cert)); |
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if (!isname || !serial) { |
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, |
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X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS); |
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goto err; |
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} |
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} |
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if (!(akeyid = AUTHORITY_KEYID_new())) |
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goto err; |
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if (isname) { |
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if (!(gens = sk_GENERAL_NAME_new_null()) || |
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!(gen = GENERAL_NAME_new()) || |
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!sk_GENERAL_NAME_push(gens, gen)) { |
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, |
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ERR_R_MALLOC_FAILURE); |
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goto err; |
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} |
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gen->type = GEN_DIRNAME; |
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gen->d.dirn = isname; |
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} |
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akeyid->issuer = gens; |
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akeyid->serial = serial; |
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akeyid->keyid = ikeyid; |
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return akeyid; |
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err: |
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AUTHORITY_KEYID_free(akeyid); |
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GENERAL_NAME_free(gen); |
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sk_GENERAL_NAME_free(gens); |
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X509_NAME_free(isname); |
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ASN1_INTEGER_free(serial); |
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ASN1_OCTET_STRING_free(ikeyid); |
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return NULL; |
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} |