522 lines
16 KiB
C
522 lines
16 KiB
C
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/*
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* Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/conf.h>
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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#include <openssl/x509v3.h>
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#include "crypto/x509.h"
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#include "ext_dat.h"
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#include "x509_local.h"
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static void *v2i_crld(const X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
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static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
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int indent);
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const X509V3_EXT_METHOD ossl_v3_crld = {
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NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
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0, 0, 0, 0,
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0, 0,
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0,
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v2i_crld,
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i2r_crldp, 0,
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NULL
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};
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const X509V3_EXT_METHOD ossl_v3_freshest_crl = {
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NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
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0, 0, 0, 0,
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0, 0,
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0,
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v2i_crld,
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i2r_crldp, 0,
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NULL
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};
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static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx,
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char *sect)
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{
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STACK_OF(CONF_VALUE) *gnsect;
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STACK_OF(GENERAL_NAME) *gens;
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if (*sect == '@')
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gnsect = X509V3_get_section(ctx, sect + 1);
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else
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gnsect = X509V3_parse_list(sect);
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if (!gnsect) {
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ERR_raise(ERR_LIB_X509V3, X509V3_R_SECTION_NOT_FOUND);
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return NULL;
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}
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gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
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if (*sect == '@')
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X509V3_section_free(ctx, gnsect);
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else
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sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
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return gens;
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}
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static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
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CONF_VALUE *cnf)
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{
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STACK_OF(GENERAL_NAME) *fnm = NULL;
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STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
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if (cnf->value == NULL) {
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ERR_raise(ERR_LIB_X509V3, X509V3_R_MISSING_VALUE);
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goto err;
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}
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if (HAS_PREFIX(cnf->name, "fullname")) {
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fnm = gnames_from_sectname(ctx, cnf->value);
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if (!fnm)
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goto err;
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} else if (strcmp(cnf->name, "relativename") == 0) {
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int ret;
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STACK_OF(CONF_VALUE) *dnsect;
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X509_NAME *nm;
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nm = X509_NAME_new();
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if (nm == NULL)
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return -1;
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dnsect = X509V3_get_section(ctx, cnf->value);
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if (!dnsect) {
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X509_NAME_free(nm);
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ERR_raise(ERR_LIB_X509V3, X509V3_R_SECTION_NOT_FOUND);
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return -1;
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}
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ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
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X509V3_section_free(ctx, dnsect);
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rnm = nm->entries;
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nm->entries = NULL;
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X509_NAME_free(nm);
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if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
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goto err;
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/*
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* Since its a name fragment can't have more than one RDNSequence
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*/
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if (sk_X509_NAME_ENTRY_value(rnm,
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sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
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ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_MULTIPLE_RDNS);
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goto err;
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}
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} else
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return 0;
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if (*pdp) {
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ERR_raise(ERR_LIB_X509V3, X509V3_R_DISTPOINT_ALREADY_SET);
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goto err;
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}
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*pdp = DIST_POINT_NAME_new();
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if (*pdp == NULL)
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goto err;
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if (fnm) {
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(*pdp)->type = 0;
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(*pdp)->name.fullname = fnm;
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} else {
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(*pdp)->type = 1;
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(*pdp)->name.relativename = rnm;
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}
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return 1;
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err:
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sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
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sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
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return -1;
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}
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static const BIT_STRING_BITNAME reason_flags[] = {
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{0, "Unused", "unused"},
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{1, "Key Compromise", "keyCompromise"},
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{2, "CA Compromise", "CACompromise"},
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{3, "Affiliation Changed", "affiliationChanged"},
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{4, "Superseded", "superseded"},
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{5, "Cessation Of Operation", "cessationOfOperation"},
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{6, "Certificate Hold", "certificateHold"},
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{7, "Privilege Withdrawn", "privilegeWithdrawn"},
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{8, "AA Compromise", "AACompromise"},
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{-1, NULL, NULL}
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};
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static int set_reasons(ASN1_BIT_STRING **preas, char *value)
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{
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STACK_OF(CONF_VALUE) *rsk = NULL;
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const BIT_STRING_BITNAME *pbn;
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const char *bnam;
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int i, ret = 0;
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rsk = X509V3_parse_list(value);
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if (rsk == NULL)
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return 0;
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if (*preas != NULL)
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goto err;
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for (i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
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bnam = sk_CONF_VALUE_value(rsk, i)->name;
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if (*preas == NULL) {
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*preas = ASN1_BIT_STRING_new();
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if (*preas == NULL)
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goto err;
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}
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for (pbn = reason_flags; pbn->lname; pbn++) {
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if (strcmp(pbn->sname, bnam) == 0) {
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if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1))
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goto err;
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break;
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}
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}
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if (pbn->lname == NULL)
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goto err;
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}
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ret = 1;
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err:
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sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
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return ret;
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}
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static int print_reasons(BIO *out, const char *rname,
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ASN1_BIT_STRING *rflags, int indent)
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{
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int first = 1;
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const BIT_STRING_BITNAME *pbn;
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BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
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for (pbn = reason_flags; pbn->lname; pbn++) {
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if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum)) {
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if (first)
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first = 0;
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else
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BIO_puts(out, ", ");
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BIO_puts(out, pbn->lname);
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}
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}
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if (first)
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BIO_puts(out, "<EMPTY>\n");
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else
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BIO_puts(out, "\n");
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return 1;
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}
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static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *nval)
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{
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int i;
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CONF_VALUE *cnf;
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DIST_POINT *point = DIST_POINT_new();
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if (point == NULL)
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goto err;
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for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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int ret;
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cnf = sk_CONF_VALUE_value(nval, i);
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ret = set_dist_point_name(&point->distpoint, ctx, cnf);
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if (ret > 0)
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continue;
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if (ret < 0)
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goto err;
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if (strcmp(cnf->name, "reasons") == 0) {
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if (!set_reasons(&point->reasons, cnf->value))
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goto err;
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} else if (strcmp(cnf->name, "CRLissuer") == 0) {
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point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
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if (point->CRLissuer == NULL)
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goto err;
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}
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}
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return point;
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err:
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DIST_POINT_free(point);
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return NULL;
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}
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static void *v2i_crld(const X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
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{
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STACK_OF(DIST_POINT) *crld;
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GENERAL_NAMES *gens = NULL;
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GENERAL_NAME *gen = NULL;
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CONF_VALUE *cnf;
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const int num = sk_CONF_VALUE_num(nval);
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int i;
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crld = sk_DIST_POINT_new_reserve(NULL, num);
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if (crld == NULL) {
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ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
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goto err;
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}
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for (i = 0; i < num; i++) {
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DIST_POINT *point;
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cnf = sk_CONF_VALUE_value(nval, i);
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if (cnf->value == NULL) {
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STACK_OF(CONF_VALUE) *dpsect;
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dpsect = X509V3_get_section(ctx, cnf->name);
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if (!dpsect)
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goto err;
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point = crldp_from_section(ctx, dpsect);
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X509V3_section_free(ctx, dpsect);
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if (point == NULL)
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goto err;
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sk_DIST_POINT_push(crld, point); /* no failure as it was reserved */
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} else {
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if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
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goto err;
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if ((gens = GENERAL_NAMES_new()) == NULL) {
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ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
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goto err;
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}
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if (!sk_GENERAL_NAME_push(gens, gen)) {
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ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
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goto err;
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}
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gen = NULL;
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if ((point = DIST_POINT_new()) == NULL) {
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ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
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goto err;
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}
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sk_DIST_POINT_push(crld, point); /* no failure as it was reserved */
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if ((point->distpoint = DIST_POINT_NAME_new()) == NULL) {
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ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
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goto err;
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}
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point->distpoint->name.fullname = gens;
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point->distpoint->type = 0;
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gens = NULL;
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}
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}
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return crld;
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err:
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GENERAL_NAME_free(gen);
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GENERAL_NAMES_free(gens);
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sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
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return NULL;
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}
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static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
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switch (operation) {
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case ASN1_OP_NEW_POST:
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dpn->dpname = NULL;
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break;
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case ASN1_OP_FREE_POST:
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X509_NAME_free(dpn->dpname);
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break;
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}
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return 1;
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}
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ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
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ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
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ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
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} ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
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IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
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ASN1_SEQUENCE(DIST_POINT) = {
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ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
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ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
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ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
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} ASN1_SEQUENCE_END(DIST_POINT)
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IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
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ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) =
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ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
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ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
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IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
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ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
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ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
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ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
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ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
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ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
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ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
|
||
|
|
ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
|
||
|
|
} ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
|
||
|
|
|
||
|
|
IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
|
||
|
|
|
||
|
|
static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
|
||
|
|
int indent);
|
||
|
|
static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
|
||
|
|
STACK_OF(CONF_VALUE) *nval);
|
||
|
|
|
||
|
|
const X509V3_EXT_METHOD ossl_v3_idp = {
|
||
|
|
NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
|
||
|
|
ASN1_ITEM_ref(ISSUING_DIST_POINT),
|
||
|
|
0, 0, 0, 0,
|
||
|
|
0, 0,
|
||
|
|
0,
|
||
|
|
v2i_idp,
|
||
|
|
i2r_idp, 0,
|
||
|
|
NULL
|
||
|
|
};
|
||
|
|
|
||
|
|
static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
|
||
|
|
STACK_OF(CONF_VALUE) *nval)
|
||
|
|
{
|
||
|
|
ISSUING_DIST_POINT *idp = NULL;
|
||
|
|
CONF_VALUE *cnf;
|
||
|
|
char *name, *val;
|
||
|
|
int i, ret;
|
||
|
|
idp = ISSUING_DIST_POINT_new();
|
||
|
|
if (idp == NULL) {
|
||
|
|
ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
|
||
|
|
cnf = sk_CONF_VALUE_value(nval, i);
|
||
|
|
name = cnf->name;
|
||
|
|
val = cnf->value;
|
||
|
|
ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
|
||
|
|
if (ret > 0)
|
||
|
|
continue;
|
||
|
|
if (ret < 0)
|
||
|
|
goto err;
|
||
|
|
if (strcmp(name, "onlyuser") == 0) {
|
||
|
|
if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
|
||
|
|
goto err;
|
||
|
|
} else if (strcmp(name, "onlyCA") == 0) {
|
||
|
|
if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
|
||
|
|
goto err;
|
||
|
|
} else if (strcmp(name, "onlyAA") == 0) {
|
||
|
|
if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
|
||
|
|
goto err;
|
||
|
|
} else if (strcmp(name, "indirectCRL") == 0) {
|
||
|
|
if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
|
||
|
|
goto err;
|
||
|
|
} else if (strcmp(name, "onlysomereasons") == 0) {
|
||
|
|
if (!set_reasons(&idp->onlysomereasons, val))
|
||
|
|
goto err;
|
||
|
|
} else {
|
||
|
|
ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NAME);
|
||
|
|
X509V3_conf_add_error_name_value(cnf);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return idp;
|
||
|
|
|
||
|
|
err:
|
||
|
|
ISSUING_DIST_POINT_free(idp);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
|
||
|
|
if (i > 0)
|
||
|
|
BIO_puts(out, "\n");
|
||
|
|
BIO_printf(out, "%*s", indent + 2, "");
|
||
|
|
GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
|
||
|
|
{
|
||
|
|
if (dpn->type == 0) {
|
||
|
|
BIO_printf(out, "%*sFull Name:\n", indent, "");
|
||
|
|
print_gens(out, dpn->name.fullname, indent);
|
||
|
|
} else {
|
||
|
|
X509_NAME ntmp;
|
||
|
|
ntmp.entries = dpn->name.relativename;
|
||
|
|
BIO_printf(out, "%*sRelative Name:\n%*s", indent, "", indent + 2, "");
|
||
|
|
X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
|
||
|
|
BIO_puts(out, "\n");
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
|
||
|
|
int indent)
|
||
|
|
{
|
||
|
|
ISSUING_DIST_POINT *idp = pidp;
|
||
|
|
if (idp->distpoint)
|
||
|
|
print_distpoint(out, idp->distpoint, indent);
|
||
|
|
if (idp->onlyuser > 0)
|
||
|
|
BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
|
||
|
|
if (idp->onlyCA > 0)
|
||
|
|
BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
|
||
|
|
if (idp->indirectCRL > 0)
|
||
|
|
BIO_printf(out, "%*sIndirect CRL\n", indent, "");
|
||
|
|
if (idp->onlysomereasons)
|
||
|
|
print_reasons(out, "Only Some Reasons", idp->onlysomereasons, indent);
|
||
|
|
if (idp->onlyattr > 0)
|
||
|
|
BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
|
||
|
|
if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
|
||
|
|
&& (idp->indirectCRL <= 0) && !idp->onlysomereasons
|
||
|
|
&& (idp->onlyattr <= 0))
|
||
|
|
BIO_printf(out, "%*s<EMPTY>\n", indent, "");
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
|
||
|
|
int indent)
|
||
|
|
{
|
||
|
|
STACK_OF(DIST_POINT) *crld = pcrldp;
|
||
|
|
DIST_POINT *point;
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < sk_DIST_POINT_num(crld); i++) {
|
||
|
|
if (i > 0)
|
||
|
|
BIO_puts(out, "\n");
|
||
|
|
point = sk_DIST_POINT_value(crld, i);
|
||
|
|
if (point->distpoint)
|
||
|
|
print_distpoint(out, point->distpoint, indent);
|
||
|
|
if (point->reasons)
|
||
|
|
print_reasons(out, "Reasons", point->reasons, indent);
|
||
|
|
if (point->CRLissuer) {
|
||
|
|
BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
|
||
|
|
print_gens(out, point->CRLissuer, indent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Append any nameRelativeToCRLIssuer in dpn to iname, set in dpn->dpname */
|
||
|
|
int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, const X509_NAME *iname)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
STACK_OF(X509_NAME_ENTRY) *frag;
|
||
|
|
X509_NAME_ENTRY *ne;
|
||
|
|
|
||
|
|
if (dpn == NULL || dpn->type != 1)
|
||
|
|
return 1;
|
||
|
|
frag = dpn->name.relativename;
|
||
|
|
X509_NAME_free(dpn->dpname); /* just in case it was already set */
|
||
|
|
dpn->dpname = X509_NAME_dup(iname);
|
||
|
|
if (dpn->dpname == NULL)
|
||
|
|
return 0;
|
||
|
|
for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++) {
|
||
|
|
ne = sk_X509_NAME_ENTRY_value(frag, i);
|
||
|
|
if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1))
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
/* generate cached encoding of name */
|
||
|
|
if (i2d_X509_NAME(dpn->dpname, NULL) >= 0)
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
err:
|
||
|
|
X509_NAME_free(dpn->dpname);
|
||
|
|
dpn->dpname = NULL;
|
||
|
|
return 0;
|
||
|
|
}
|