/* $OpenBSD: v3_alt.c,v 1.30 2019/04/22 17:10:01 tb Exp $ */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project. */ /* ==================================================================== * Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #include #include #include #include #include static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval); static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval); static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p); static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens); static int do_othername(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx); static int do_dirname(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx); const X509V3_EXT_METHOD v3_alt[] = { { .ext_nid = NID_subject_alt_name, .ext_flags = 0, .it = &GENERAL_NAMES_it, .ext_new = NULL, .ext_free = NULL, .d2i = NULL, .i2d = NULL, .i2s = NULL, .s2i = NULL, .i2v = (X509V3_EXT_I2V)i2v_GENERAL_NAMES, .v2i = (X509V3_EXT_V2I)v2i_subject_alt, .i2r = NULL, .r2i = NULL, .usr_data = NULL, }, { .ext_nid = NID_issuer_alt_name, .ext_flags = 0, .it = &GENERAL_NAMES_it, .ext_new = NULL, .ext_free = NULL, .d2i = NULL, .i2d = NULL, .i2s = NULL, .s2i = NULL, .i2v = (X509V3_EXT_I2V)i2v_GENERAL_NAMES, .v2i = (X509V3_EXT_V2I)v2i_issuer_alt, .i2r = NULL, .r2i = NULL, .usr_data = NULL, }, { .ext_nid = NID_certificate_issuer, .ext_flags = 0, .it = &GENERAL_NAMES_it, .ext_new = NULL, .ext_free = NULL, .d2i = NULL, .i2d = NULL, .i2s = NULL, .s2i = NULL, .i2v = (X509V3_EXT_I2V)i2v_GENERAL_NAMES, .v2i = NULL, .i2r = NULL, .r2i = NULL, .usr_data = NULL, }, }; STACK_OF(CONF_VALUE) * i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method, GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret) { STACK_OF(CONF_VALUE) *free_ret = NULL; GENERAL_NAME *gen; int i; if (ret == NULL) { if ((free_ret = ret = sk_CONF_VALUE_new_null()) == NULL) return NULL; } for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) { if ((gen = sk_GENERAL_NAME_value(gens, i)) == NULL) goto err; if ((ret = i2v_GENERAL_NAME(method, gen, ret)) == NULL) goto err; } return ret; err: sk_CONF_VALUE_pop_free(free_ret, X509V3_conf_free); return NULL; } STACK_OF(CONF_VALUE) * i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret) { STACK_OF(CONF_VALUE) *free_ret = NULL; unsigned char *p; char oline[256], htmp[5]; int i; if (ret == NULL) { if ((free_ret = ret = sk_CONF_VALUE_new_null()) == NULL) return NULL; } switch (gen->type) { case GEN_OTHERNAME: if (!X509V3_add_value("othername", "", &ret)) goto err; break; case GEN_X400: if (!X509V3_add_value("X400Name", "", &ret)) goto err; break; case GEN_EDIPARTY: if (!X509V3_add_value("EdiPartyName", "", &ret)) goto err; break; case GEN_EMAIL: if (!X509V3_add_value_uchar("email", gen->d.ia5->data, &ret)) goto err; break; case GEN_DNS: if (!X509V3_add_value_uchar("DNS", gen->d.ia5->data, &ret)) goto err; break; case GEN_URI: if (!X509V3_add_value_uchar("URI", gen->d.ia5->data, &ret)) goto err; break; case GEN_DIRNAME: if (X509_NAME_oneline(gen->d.dirn, oline, 256) == NULL) goto err; if (!X509V3_add_value("DirName", oline, &ret)) goto err; break; case GEN_IPADD: /* XXX */ p = gen->d.ip->data; if (gen->d.ip->length == 4) (void) snprintf(oline, sizeof oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]); else if (gen->d.ip->length == 16) { oline[0] = 0; for (i = 0; i < 8; i++) { (void) snprintf(htmp, sizeof htmp, "%X", p[0] << 8 | p[1]); p += 2; strlcat(oline, htmp, sizeof(oline)); if (i != 7) strlcat(oline, ":", sizeof(oline)); } } else { if (!X509V3_add_value("IP Address", "", &ret)) goto err; break; } if (!X509V3_add_value("IP Address", oline, &ret)) goto err; break; case GEN_RID: if (!i2t_ASN1_OBJECT(oline, 256, gen->d.rid)) goto err; if (!X509V3_add_value("Registered ID", oline, &ret)) goto err; break; } return ret; err: sk_CONF_VALUE_pop_free(free_ret, X509V3_conf_free); return NULL; } int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen) { unsigned char *p; int i; switch (gen->type) { case GEN_OTHERNAME: BIO_printf(out, "othername:"); break; case GEN_X400: BIO_printf(out, "X400Name:"); break; case GEN_EDIPARTY: /* Maybe fix this: it is supported now */ BIO_printf(out, "EdiPartyName:"); break; case GEN_EMAIL: BIO_printf(out, "email:%s", gen->d.ia5->data); break; case GEN_DNS: BIO_printf(out, "DNS:%s", gen->d.ia5->data); break; case GEN_URI: BIO_printf(out, "URI:%s", gen->d.ia5->data); break; case GEN_DIRNAME: BIO_printf(out, "DirName: "); X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE); break; case GEN_IPADD: p = gen->d.ip->data; if (gen->d.ip->length == 4) BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]); else if (gen->d.ip->length == 16) { BIO_printf(out, "IP Address"); for (i = 0; i < 8; i++) { BIO_printf(out, ":%X", p[0] << 8 | p[1]); p += 2; } BIO_puts(out, "\n"); } else { BIO_printf(out, "IP Address:"); break; } break; case GEN_RID: BIO_printf(out, "Registered ID"); i2a_ASN1_OBJECT(out, gen->d.rid); break; } return 1; } static GENERAL_NAMES * v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) { GENERAL_NAMES *gens = NULL; CONF_VALUE *cnf; int i; if ((gens = sk_GENERAL_NAME_new_null()) == NULL) { X509V3error(ERR_R_MALLOC_FAILURE); return NULL; } for (i = 0; i < sk_CONF_VALUE_num(nval); i++) { cnf = sk_CONF_VALUE_value(nval, i); if (name_cmp(cnf->name, "issuer") == 0 && cnf->value != NULL && strcmp(cnf->value, "copy") == 0) { if (!copy_issuer(ctx, gens)) goto err; } else { GENERAL_NAME *gen; if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL) goto err; if (sk_GENERAL_NAME_push(gens, gen) == 0) { GENERAL_NAME_free(gen); goto err; } } } return gens; err: sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); return NULL; } /* Append subject altname of issuer to issuer alt name of subject */ static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens) { GENERAL_NAMES *ialt; GENERAL_NAME *gen; X509_EXTENSION *ext; int i; if (ctx && (ctx->flags == CTX_TEST)) return 1; if (!ctx || !ctx->issuer_cert) { X509V3error(X509V3_R_NO_ISSUER_DETAILS); goto err; } i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1); if (i < 0) return 1; if (!(ext = X509_get_ext(ctx->issuer_cert, i)) || !(ialt = X509V3_EXT_d2i(ext))) { X509V3error(X509V3_R_ISSUER_DECODE_ERROR); goto err; } for (i = 0; i < sk_GENERAL_NAME_num(ialt); i++) { gen = sk_GENERAL_NAME_value(ialt, i); if (!sk_GENERAL_NAME_push(gens, gen)) { X509V3error(ERR_R_MALLOC_FAILURE); goto err; } } sk_GENERAL_NAME_free(ialt); return 1; err: return 0; } static GENERAL_NAMES * v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) { GENERAL_NAMES *gens = NULL; CONF_VALUE *cnf; int i; if (!(gens = sk_GENERAL_NAME_new_null())) { X509V3error(ERR_R_MALLOC_FAILURE); return NULL; } for (i = 0; i < sk_CONF_VALUE_num(nval); i++) { cnf = sk_CONF_VALUE_value(nval, i); if (!name_cmp(cnf->name, "email") && cnf->value && !strcmp(cnf->value, "copy")) { if (!copy_email(ctx, gens, 0)) goto err; } else if (!name_cmp(cnf->name, "email") && cnf->value && !strcmp(cnf->value, "move")) { if (!copy_email(ctx, gens, 1)) goto err; } else { GENERAL_NAME *gen; if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; if (sk_GENERAL_NAME_push(gens, gen) == 0) { GENERAL_NAME_free(gen); goto err; } } } return gens; err: sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); return NULL; } /* Copy any email addresses in a certificate or request to * GENERAL_NAMES */ static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p) { X509_NAME *nm; ASN1_IA5STRING *email = NULL; X509_NAME_ENTRY *ne; GENERAL_NAME *gen = NULL; int i; if (ctx != NULL && ctx->flags == CTX_TEST) return 1; if (!ctx || (!ctx->subject_cert && !ctx->subject_req)) { X509V3error(X509V3_R_NO_SUBJECT_DETAILS); goto err; } /* Find the subject name */ if (ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert); else nm = X509_REQ_get_subject_name(ctx->subject_req); /* Now add any email address(es) to STACK */ i = -1; while ((i = X509_NAME_get_index_by_NID(nm, NID_pkcs9_emailAddress, i)) >= 0) { ne = X509_NAME_get_entry(nm, i); email = ASN1_STRING_dup(X509_NAME_ENTRY_get_data(ne)); if (move_p) { X509_NAME_delete_entry(nm, i); X509_NAME_ENTRY_free(ne); i--; } if (!email || !(gen = GENERAL_NAME_new())) { X509V3error(ERR_R_MALLOC_FAILURE); goto err; } gen->d.ia5 = email; email = NULL; gen->type = GEN_EMAIL; if (!sk_GENERAL_NAME_push(gens, gen)) { X509V3error(ERR_R_MALLOC_FAILURE); goto err; } gen = NULL; } return 1; err: GENERAL_NAME_free(gen); ASN1_IA5STRING_free(email); return 0; } GENERAL_NAMES * v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) { GENERAL_NAME *gen; GENERAL_NAMES *gens = NULL; CONF_VALUE *cnf; int i; if (!(gens = sk_GENERAL_NAME_new_null())) { X509V3error(ERR_R_MALLOC_FAILURE); return NULL; } for (i = 0; i < sk_CONF_VALUE_num(nval); i++) { cnf = sk_CONF_VALUE_value(nval, i); if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; if (sk_GENERAL_NAME_push(gens, gen) == 0) { GENERAL_NAME_free(gen); goto err; } } return gens; err: sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); return NULL; } GENERAL_NAME * v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, CONF_VALUE *cnf) { return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0); } GENERAL_NAME * a2i_GENERAL_NAME(GENERAL_NAME *out, const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, int gen_type, const char *value, int is_nc) { char is_string = 0; GENERAL_NAME *gen = NULL; if (!value) { X509V3error(X509V3_R_MISSING_VALUE); return NULL; } if (out) gen = out; else { gen = GENERAL_NAME_new(); if (gen == NULL) { X509V3error(ERR_R_MALLOC_FAILURE); return NULL; } } switch (gen_type) { case GEN_URI: case GEN_EMAIL: case GEN_DNS: is_string = 1; break; case GEN_RID: { ASN1_OBJECT *obj; if (!(obj = OBJ_txt2obj(value, 0))) { X509V3error(X509V3_R_BAD_OBJECT); ERR_asprintf_error_data("value=%s", value); goto err; } gen->d.rid = obj; } break; case GEN_IPADD: if (is_nc) gen->d.ip = a2i_IPADDRESS_NC(value); else gen->d.ip = a2i_IPADDRESS(value); if (gen->d.ip == NULL) { X509V3error(X509V3_R_BAD_IP_ADDRESS); ERR_asprintf_error_data("value=%s", value); goto err; } break; case GEN_DIRNAME: if (!do_dirname(gen, value, ctx)) { X509V3error(X509V3_R_DIRNAME_ERROR); goto err; } break; case GEN_OTHERNAME: if (!do_othername(gen, value, ctx)) { X509V3error(X509V3_R_OTHERNAME_ERROR); goto err; } break; default: X509V3error(X509V3_R_UNSUPPORTED_TYPE); goto err; } if (is_string) { if (!(gen->d.ia5 = ASN1_IA5STRING_new()) || !ASN1_STRING_set(gen->d.ia5, value, strlen(value))) { X509V3error(ERR_R_MALLOC_FAILURE); goto err; } } gen->type = gen_type; return gen; err: if (out == NULL) GENERAL_NAME_free(gen); return NULL; } GENERAL_NAME * v2i_GENERAL_NAME_ex(GENERAL_NAME *out, const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc) { int type; char *name, *value; name = cnf->name; value = cnf->value; if (!value) { X509V3error(X509V3_R_MISSING_VALUE); return NULL; } if (!name_cmp(name, "email")) type = GEN_EMAIL; else if (!name_cmp(name, "URI")) type = GEN_URI; else if (!name_cmp(name, "DNS")) type = GEN_DNS; else if (!name_cmp(name, "RID")) type = GEN_RID; else if (!name_cmp(name, "IP")) type = GEN_IPADD; else if (!name_cmp(name, "dirName")) type = GEN_DIRNAME; else if (!name_cmp(name, "otherName")) type = GEN_OTHERNAME; else { X509V3error(X509V3_R_UNSUPPORTED_OPTION); ERR_asprintf_error_data("name=%s", name); return NULL; } return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc); } static int do_othername(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx) { char *objtmp = NULL, *p; int objlen; if (!(p = strchr(value, ';'))) return 0; if (!(gen->d.otherName = OTHERNAME_new())) return 0; /* Free this up because we will overwrite it. * no need to free type_id because it is static */ ASN1_TYPE_free(gen->d.otherName->value); if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx))) return 0; objlen = p - value; objtmp = malloc(objlen + 1); if (objtmp) { strlcpy(objtmp, value, objlen + 1); gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0); free(objtmp); } else gen->d.otherName->type_id = NULL; if (!gen->d.otherName->type_id) return 0; return 1; } static int do_dirname(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx) { int ret; STACK_OF(CONF_VALUE) *sk; X509_NAME *nm; if (!(nm = X509_NAME_new())) return 0; sk = X509V3_get_section(ctx, value); if (!sk) { X509V3error(X509V3_R_SECTION_NOT_FOUND); ERR_asprintf_error_data("section=%s", value); X509_NAME_free(nm); return 0; } /* FIXME: should allow other character types... */ ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC); if (!ret) X509_NAME_free(nm); gen->d.dirn = nm; X509V3_section_free(ctx, sk); return ret; }