547 lines
15 KiB
C
547 lines
15 KiB
C
// Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 1999.
|
|
// Copyright (c) 1999-2008 The OpenSSL Project. All rights reserved.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/asn1.h>
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/conf.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/mem.h>
|
|
#include <openssl/obj.h>
|
|
#include <openssl/x509.h>
|
|
|
|
#include "internal.h"
|
|
|
|
|
|
static void *v2i_crld(const X509V3_EXT_METHOD *method, const X509V3_CTX *ctx,
|
|
const STACK_OF(CONF_VALUE) *nval);
|
|
static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
|
|
int indent);
|
|
|
|
const X509V3_EXT_METHOD v3_crld = {
|
|
NID_crl_distribution_points,
|
|
0,
|
|
ASN1_ITEM_ref(CRL_DIST_POINTS),
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
v2i_crld,
|
|
i2r_crldp,
|
|
0,
|
|
NULL,
|
|
};
|
|
|
|
const X509V3_EXT_METHOD v3_freshest_crl = {
|
|
NID_freshest_crl,
|
|
0,
|
|
ASN1_ITEM_ref(CRL_DIST_POINTS),
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
v2i_crld,
|
|
i2r_crldp,
|
|
0,
|
|
NULL,
|
|
};
|
|
|
|
static STACK_OF(GENERAL_NAME) *gnames_from_sectname(const X509V3_CTX *ctx,
|
|
char *sect) {
|
|
const STACK_OF(CONF_VALUE) *gnsect;
|
|
STACK_OF(CONF_VALUE) *gnsect_owned = NULL;
|
|
if (*sect == '@') {
|
|
gnsect = X509V3_get_section(ctx, sect + 1);
|
|
} else {
|
|
gnsect_owned = X509V3_parse_list(sect);
|
|
gnsect = gnsect_owned;
|
|
}
|
|
if (!gnsect) {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
|
|
return NULL;
|
|
}
|
|
STACK_OF(GENERAL_NAME) *gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
|
|
sk_CONF_VALUE_pop_free(gnsect_owned, X509V3_conf_free);
|
|
return gens;
|
|
}
|
|
|
|
// set_dist_point_name decodes a DistributionPointName from |cnf| and writes the
|
|
// result in |*pdp|. It returns 1 on success, -1 on error, and 0 if |cnf| used
|
|
// an unrecognized input type. The zero return can be used by callers to support
|
|
// additional syntax.
|
|
static int set_dist_point_name(DIST_POINT_NAME **pdp, const X509V3_CTX *ctx,
|
|
const CONF_VALUE *cnf) {
|
|
STACK_OF(GENERAL_NAME) *fnm = NULL;
|
|
STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
|
|
if (!strncmp(cnf->name, "fullname", 9)) {
|
|
// If |cnf| comes from |X509V3_parse_list|, which is possible for a v2i
|
|
// function, |cnf->value| may be NULL.
|
|
if (cnf->value == NULL) {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
|
|
return -1;
|
|
}
|
|
fnm = gnames_from_sectname(ctx, cnf->value);
|
|
if (!fnm) {
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(cnf->name, "relativename")) {
|
|
// If |cnf| comes from |X509V3_parse_list|, which is possible for a v2i
|
|
// function, |cnf->value| may be NULL.
|
|
if (cnf->value == NULL) {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
|
|
return -1;
|
|
}
|
|
const STACK_OF(CONF_VALUE) *dnsect = X509V3_get_section(ctx, cnf->value);
|
|
if (!dnsect) {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
|
|
return -1;
|
|
}
|
|
X509_NAME *nm = X509_NAME_new();
|
|
if (!nm) {
|
|
return -1;
|
|
}
|
|
int ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
|
|
rnm = nm->entries;
|
|
nm->entries = NULL;
|
|
X509_NAME_free(nm);
|
|
if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0) {
|
|
goto err;
|
|
}
|
|
// There can only be one RDN in nameRelativeToCRLIssuer.
|
|
if (sk_X509_NAME_ENTRY_value(rnm, sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_MULTIPLE_RDNS);
|
|
goto err;
|
|
}
|
|
} else {
|
|
return 0;
|
|
}
|
|
|
|
if (*pdp) {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_DISTPOINT_ALREADY_SET);
|
|
goto err;
|
|
}
|
|
|
|
*pdp = DIST_POINT_NAME_new();
|
|
if (!*pdp) {
|
|
goto err;
|
|
}
|
|
if (fnm) {
|
|
(*pdp)->type = 0;
|
|
(*pdp)->name.fullname = fnm;
|
|
} else {
|
|
(*pdp)->type = 1;
|
|
(*pdp)->name.relativename = rnm;
|
|
}
|
|
|
|
return 1;
|
|
|
|
err:
|
|
sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
|
|
sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
|
|
return -1;
|
|
}
|
|
|
|
static const BIT_STRING_BITNAME reason_flags[] = {
|
|
{0, "Unused", "unused"},
|
|
{1, "Key Compromise", "keyCompromise"},
|
|
{2, "CA Compromise", "CACompromise"},
|
|
{3, "Affiliation Changed", "affiliationChanged"},
|
|
{4, "Superseded", "superseded"},
|
|
{5, "Cessation Of Operation", "cessationOfOperation"},
|
|
{6, "Certificate Hold", "certificateHold"},
|
|
{7, "Privilege Withdrawn", "privilegeWithdrawn"},
|
|
{8, "AA Compromise", "AACompromise"},
|
|
{-1, NULL, NULL}};
|
|
|
|
static int set_reasons(ASN1_BIT_STRING **preas, const char *value) {
|
|
if (*preas) {
|
|
// Duplicate "reasons" or "onlysomereasons" key.
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_VALUE);
|
|
return 0;
|
|
}
|
|
int ret = 0;
|
|
STACK_OF(CONF_VALUE) *rsk = X509V3_parse_list(value);
|
|
if (!rsk) {
|
|
return 0;
|
|
}
|
|
for (size_t i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
|
|
const char *bnam = sk_CONF_VALUE_value(rsk, i)->name;
|
|
if (!*preas) {
|
|
*preas = ASN1_BIT_STRING_new();
|
|
if (!*preas) {
|
|
goto err;
|
|
}
|
|
}
|
|
const BIT_STRING_BITNAME *pbn;
|
|
for (pbn = reason_flags; pbn->lname; pbn++) {
|
|
if (!strcmp(pbn->sname, bnam)) {
|
|
if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1)) {
|
|
goto err;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (!pbn->lname) {
|
|
goto err;
|
|
}
|
|
}
|
|
ret = 1;
|
|
|
|
err:
|
|
sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
|
|
return ret;
|
|
}
|
|
|
|
static int print_reasons(BIO *out, const char *rname, ASN1_BIT_STRING *rflags,
|
|
int indent) {
|
|
int first = 1;
|
|
const BIT_STRING_BITNAME *pbn;
|
|
BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
|
|
for (pbn = reason_flags; pbn->lname; pbn++) {
|
|
if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum)) {
|
|
if (first) {
|
|
first = 0;
|
|
} else {
|
|
BIO_puts(out, ", ");
|
|
}
|
|
BIO_puts(out, pbn->lname);
|
|
}
|
|
}
|
|
if (first) {
|
|
BIO_puts(out, "<EMPTY>\n");
|
|
} else {
|
|
BIO_puts(out, "\n");
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static DIST_POINT *crldp_from_section(const X509V3_CTX *ctx,
|
|
const STACK_OF(CONF_VALUE) *nval) {
|
|
DIST_POINT *point = NULL;
|
|
point = DIST_POINT_new();
|
|
if (!point) {
|
|
goto err;
|
|
}
|
|
for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
|
|
const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
|
|
int ret = set_dist_point_name(&point->distpoint, ctx, cnf);
|
|
if (ret > 0) {
|
|
continue;
|
|
}
|
|
if (ret < 0) {
|
|
goto err;
|
|
}
|
|
if (!strcmp(cnf->name, "reasons")) {
|
|
if (!set_reasons(&point->reasons, cnf->value)) {
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(cnf->name, "CRLissuer")) {
|
|
GENERAL_NAMES_free(point->CRLissuer);
|
|
point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
|
|
if (!point->CRLissuer) {
|
|
goto err;
|
|
}
|
|
}
|
|
}
|
|
|
|
return point;
|
|
|
|
err:
|
|
DIST_POINT_free(point);
|
|
return NULL;
|
|
}
|
|
|
|
static void *v2i_crld(const X509V3_EXT_METHOD *method, const X509V3_CTX *ctx,
|
|
const STACK_OF(CONF_VALUE) *nval) {
|
|
STACK_OF(DIST_POINT) *crld = NULL;
|
|
GENERAL_NAMES *gens = NULL;
|
|
GENERAL_NAME *gen = NULL;
|
|
if (!(crld = sk_DIST_POINT_new_null())) {
|
|
goto err;
|
|
}
|
|
for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
|
|
DIST_POINT *point;
|
|
const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
|
|
if (!cnf->value) {
|
|
const STACK_OF(CONF_VALUE) *dpsect = X509V3_get_section(ctx, cnf->name);
|
|
if (!dpsect) {
|
|
goto err;
|
|
}
|
|
point = crldp_from_section(ctx, dpsect);
|
|
if (!point) {
|
|
goto err;
|
|
}
|
|
if (!sk_DIST_POINT_push(crld, point)) {
|
|
DIST_POINT_free(point);
|
|
goto err;
|
|
}
|
|
} else {
|
|
if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) {
|
|
goto err;
|
|
}
|
|
if (!(gens = GENERAL_NAMES_new())) {
|
|
goto err;
|
|
}
|
|
if (!sk_GENERAL_NAME_push(gens, gen)) {
|
|
goto err;
|
|
}
|
|
gen = NULL;
|
|
if (!(point = DIST_POINT_new())) {
|
|
goto err;
|
|
}
|
|
if (!sk_DIST_POINT_push(crld, point)) {
|
|
DIST_POINT_free(point);
|
|
goto err;
|
|
}
|
|
if (!(point->distpoint = DIST_POINT_NAME_new())) {
|
|
goto err;
|
|
}
|
|
point->distpoint->name.fullname = gens;
|
|
point->distpoint->type = 0;
|
|
gens = NULL;
|
|
}
|
|
}
|
|
return crld;
|
|
|
|
err:
|
|
GENERAL_NAME_free(gen);
|
|
GENERAL_NAMES_free(gens);
|
|
sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
|
|
return NULL;
|
|
}
|
|
|
|
static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
|
|
void *exarg) {
|
|
DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
|
|
|
|
switch (operation) {
|
|
case ASN1_OP_NEW_POST:
|
|
dpn->dpname = NULL;
|
|
break;
|
|
|
|
case ASN1_OP_FREE_POST:
|
|
X509_NAME_free(dpn->dpname);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
|
|
ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
|
|
ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1),
|
|
} ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
|
|
|
|
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(DIST_POINT_NAME)
|
|
|
|
ASN1_SEQUENCE(DIST_POINT) = {
|
|
ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
|
|
ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
|
|
ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2),
|
|
} ASN1_SEQUENCE_END(DIST_POINT)
|
|
|
|
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(DIST_POINT)
|
|
|
|
ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) = ASN1_EX_TEMPLATE_TYPE(
|
|
ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
|
|
ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
|
|
|
|
IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
|
|
|
|
ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
|
|
ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
|
|
ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
|
|
ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
|
|
ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
|
|
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, const X509V3_CTX *ctx,
|
|
const STACK_OF(CONF_VALUE) *nval);
|
|
|
|
const X509V3_EXT_METHOD 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, const X509V3_CTX *ctx,
|
|
const STACK_OF(CONF_VALUE) *nval) {
|
|
ISSUING_DIST_POINT *idp = ISSUING_DIST_POINT_new();
|
|
if (!idp) {
|
|
goto err;
|
|
}
|
|
for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
|
|
const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
|
|
const char *name = cnf->name;
|
|
const char *val = cnf->value;
|
|
int ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
|
|
if (ret > 0) {
|
|
continue;
|
|
}
|
|
if (ret < 0) {
|
|
goto err;
|
|
}
|
|
if (!strcmp(name, "onlyuser")) {
|
|
if (!X509V3_get_value_bool(cnf, &idp->onlyuser)) {
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(name, "onlyCA")) {
|
|
if (!X509V3_get_value_bool(cnf, &idp->onlyCA)) {
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(name, "onlyAA")) {
|
|
if (!X509V3_get_value_bool(cnf, &idp->onlyattr)) {
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(name, "indirectCRL")) {
|
|
if (!X509V3_get_value_bool(cnf, &idp->indirectCRL)) {
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(name, "onlysomereasons")) {
|
|
if (!set_reasons(&idp->onlysomereasons, val)) {
|
|
goto err;
|
|
}
|
|
} else {
|
|
OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
|
|
X509V3_conf_err(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) {
|
|
size_t i;
|
|
for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
|
|
BIO_printf(out, "%*s", indent + 2, "");
|
|
GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
|
|
BIO_puts(out, "\n");
|
|
}
|
|
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;
|
|
size_t i;
|
|
for (i = 0; i < sk_DIST_POINT_num(crld); i++) {
|
|
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;
|
|
}
|
|
|
|
int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname) {
|
|
size_t i;
|
|
STACK_OF(X509_NAME_ENTRY) *frag;
|
|
X509_NAME_ENTRY *ne;
|
|
if (!dpn || (dpn->type != 1)) {
|
|
return 1;
|
|
}
|
|
frag = dpn->name.relativename;
|
|
dpn->dpname = X509_NAME_dup(iname);
|
|
if (!dpn->dpname) {
|
|
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)) {
|
|
X509_NAME_free(dpn->dpname);
|
|
dpn->dpname = NULL;
|
|
return 0;
|
|
}
|
|
}
|
|
// generate cached encoding of name
|
|
if (i2d_X509_NAME(dpn->dpname, NULL) < 0) {
|
|
X509_NAME_free(dpn->dpname);
|
|
dpn->dpname = NULL;
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|