| /* |
| * Copyright 1999-2021 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" |
| #include "x509_local.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 ossl_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 ossl_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) { |
| ERR_raise(ERR_LIB_X509V3, 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 (HAS_PREFIX(cnf->name, "fullname")) { |
| 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) { |
| X509_NAME_free(nm); |
| ERR_raise(ERR_LIB_X509V3, 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) { |
| ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_MULTIPLE_RDNS); |
| goto err; |
| } |
| } else |
| return 0; |
| |
| if (*pdp) { |
| ERR_raise(ERR_LIB_X509V3, 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 == NULL) { |
| 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: |
| ERR_raise(ERR_LIB_X509V3, 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 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) |
| 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 { |
| ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NAME); |
| X509V3_conf_add_error_name_value(cnf); |
| goto err; |
| } |
| } |
| return idp; |
| |
| merr: |
| ERR_raise(ERR_LIB_X509V3, 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; |
| } |
| |
| /* 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; |
| } |
