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- /*
- * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
- #include <stdio.h>
- #include "internal/cryptlib.h"
- #include <openssl/conf.h>
- #include <openssl/asn1.h>
- #include <openssl/asn1t.h>
- #include <openssl/x509v3.h>
- #include "crypto/x509.h"
- #include "ext_dat.h"
- static void *v2i_crld(const X509V3_EXT_METHOD *method,
- X509V3_CTX *ctx, 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(X509V3_CTX *ctx,
- char *sect)
- {
- STACK_OF(CONF_VALUE) *gnsect;
- STACK_OF(GENERAL_NAME) *gens;
- if (*sect == '@')
- gnsect = X509V3_get_section(ctx, sect + 1);
- else
- gnsect = X509V3_parse_list(sect);
- if (!gnsect) {
- X509V3err(X509V3_F_GNAMES_FROM_SECTNAME, X509V3_R_SECTION_NOT_FOUND);
- return NULL;
- }
- gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
- if (*sect == '@')
- X509V3_section_free(ctx, gnsect);
- else
- sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
- return gens;
- }
- static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
- CONF_VALUE *cnf)
- {
- STACK_OF(GENERAL_NAME) *fnm = NULL;
- STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
- if (strncmp(cnf->name, "fullname", 9) == 0) {
- fnm = gnames_from_sectname(ctx, cnf->value);
- if (!fnm)
- goto err;
- } else if (strcmp(cnf->name, "relativename") == 0) {
- int ret;
- STACK_OF(CONF_VALUE) *dnsect;
- X509_NAME *nm;
- nm = X509_NAME_new();
- if (nm == NULL)
- return -1;
- dnsect = X509V3_get_section(ctx, cnf->value);
- if (!dnsect) {
- X509V3err(X509V3_F_SET_DIST_POINT_NAME,
- X509V3_R_SECTION_NOT_FOUND);
- return -1;
- }
- ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
- X509V3_section_free(ctx, dnsect);
- rnm = nm->entries;
- nm->entries = NULL;
- X509_NAME_free(nm);
- if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
- goto err;
- /*
- * Since its a name fragment can't have more than one RDNSequence
- */
- if (sk_X509_NAME_ENTRY_value(rnm,
- sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
- X509V3err(X509V3_F_SET_DIST_POINT_NAME,
- X509V3_R_INVALID_MULTIPLE_RDNS);
- goto err;
- }
- } else
- return 0;
- if (*pdp) {
- X509V3err(X509V3_F_SET_DIST_POINT_NAME,
- X509V3_R_DISTPOINT_ALREADY_SET);
- goto err;
- }
- *pdp = DIST_POINT_NAME_new();
- if (*pdp == NULL)
- 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, char *value)
- {
- STACK_OF(CONF_VALUE) *rsk = NULL;
- const BIT_STRING_BITNAME *pbn;
- const char *bnam;
- int i, ret = 0;
- rsk = X509V3_parse_list(value);
- if (rsk == NULL)
- return 0;
- if (*preas != NULL)
- goto err;
- for (i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
- bnam = sk_CONF_VALUE_value(rsk, i)->name;
- if (*preas == NULL) {
- *preas = ASN1_BIT_STRING_new();
- if (*preas == NULL)
- goto err;
- }
- for (pbn = reason_flags; pbn->lname; pbn++) {
- if (strcmp(pbn->sname, bnam) == 0) {
- if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1))
- goto err;
- break;
- }
- }
- if (pbn->lname == NULL)
- 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(X509V3_CTX *ctx,
- STACK_OF(CONF_VALUE) *nval)
- {
- int i;
- CONF_VALUE *cnf;
- DIST_POINT *point = DIST_POINT_new();
- if (point == NULL)
- goto err;
- for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
- int ret;
- cnf = sk_CONF_VALUE_value(nval, i);
- ret = set_dist_point_name(&point->distpoint, ctx, cnf);
- if (ret > 0)
- continue;
- if (ret < 0)
- goto err;
- if (strcmp(cnf->name, "reasons") == 0) {
- if (!set_reasons(&point->reasons, cnf->value))
- goto err;
- } else if (strcmp(cnf->name, "CRLissuer") == 0) {
- point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
- if (point->CRLissuer == NULL)
- goto err;
- }
- }
- return point;
- err:
- DIST_POINT_free(point);
- return NULL;
- }
- static void *v2i_crld(const X509V3_EXT_METHOD *method,
- X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
- {
- STACK_OF(DIST_POINT) *crld;
- GENERAL_NAMES *gens = NULL;
- GENERAL_NAME *gen = NULL;
- CONF_VALUE *cnf;
- const int num = sk_CONF_VALUE_num(nval);
- int i;
- crld = sk_DIST_POINT_new_reserve(NULL, num);
- if (crld == NULL)
- goto merr;
- for (i = 0; i < num; i++) {
- DIST_POINT *point;
- cnf = sk_CONF_VALUE_value(nval, i);
- if (!cnf->value) {
- STACK_OF(CONF_VALUE) *dpsect;
- dpsect = X509V3_get_section(ctx, cnf->name);
- if (!dpsect)
- goto err;
- point = crldp_from_section(ctx, dpsect);
- X509V3_section_free(ctx, dpsect);
- if (point == NULL)
- goto err;
- sk_DIST_POINT_push(crld, point); /* no failure as it was reserved */
- } else {
- if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
- goto err;
- if ((gens = GENERAL_NAMES_new()) == NULL)
- goto merr;
- if (!sk_GENERAL_NAME_push(gens, gen))
- goto merr;
- gen = NULL;
- if ((point = DIST_POINT_new()) == NULL)
- goto merr;
- sk_DIST_POINT_push(crld, point); /* no failure as it was reserved */
- if ((point->distpoint = DIST_POINT_NAME_new()) == NULL)
- goto merr;
- point->distpoint->name.fullname = gens;
- point->distpoint->type = 0;
- gens = NULL;
- }
- }
- return crld;
- merr:
- X509V3err(X509V3_F_V2I_CRLD, ERR_R_MALLOC_FAILURE);
- 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_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_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, X509V3_CTX *ctx,
- 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, 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)
- goto merr;
- 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 {
- X509V3err(X509V3_F_V2I_IDP, X509V3_R_INVALID_NAME);
- X509V3_conf_err(cnf);
- goto err;
- }
- }
- return idp;
- merr:
- X509V3err(X509V3_F_V2I_IDP, ERR_R_MALLOC_FAILURE);
- 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;
- }
- int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
- {
- int 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;
- }
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