/* * 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 #include "internal/cryptlib.h" #include #include #include #include #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, "\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\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; }