/* $OpenBSD: x_x509.c,v 1.35 2023/04/28 16:30:14 tb Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * 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 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 acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS 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 AUTHOR OR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include #include #include #include #include #include #include "x509_local.h" static const ASN1_AUX X509_CINF_aux = { .flags = ASN1_AFLG_ENCODING, .enc_offset = offsetof(X509_CINF, enc), }; static const ASN1_TEMPLATE X509_CINF_seq_tt[] = { { .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL, .offset = offsetof(X509_CINF, version), .field_name = "version", .item = &ASN1_INTEGER_it, }, { .offset = offsetof(X509_CINF, serialNumber), .field_name = "serialNumber", .item = &ASN1_INTEGER_it, }, { .offset = offsetof(X509_CINF, signature), .field_name = "signature", .item = &X509_ALGOR_it, }, { .offset = offsetof(X509_CINF, issuer), .field_name = "issuer", .item = &X509_NAME_it, }, { .offset = offsetof(X509_CINF, validity), .field_name = "validity", .item = &X509_VAL_it, }, { .offset = offsetof(X509_CINF, subject), .field_name = "subject", .item = &X509_NAME_it, }, { .offset = offsetof(X509_CINF, key), .field_name = "key", .item = &X509_PUBKEY_it, }, { .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_OPTIONAL, .tag = 1, .offset = offsetof(X509_CINF, issuerUID), .field_name = "issuerUID", .item = &ASN1_BIT_STRING_it, }, { .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_OPTIONAL, .tag = 2, .offset = offsetof(X509_CINF, subjectUID), .field_name = "subjectUID", .item = &ASN1_BIT_STRING_it, }, { .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_OPTIONAL, .tag = 3, .offset = offsetof(X509_CINF, extensions), .field_name = "extensions", .item = &X509_EXTENSION_it, }, }; const ASN1_ITEM X509_CINF_it = { .itype = ASN1_ITYPE_SEQUENCE, .utype = V_ASN1_SEQUENCE, .templates = X509_CINF_seq_tt, .tcount = sizeof(X509_CINF_seq_tt) / sizeof(ASN1_TEMPLATE), .funcs = &X509_CINF_aux, .size = sizeof(X509_CINF), .sname = "X509_CINF", }; X509_CINF * d2i_X509_CINF(X509_CINF **a, const unsigned char **in, long len) { return (X509_CINF *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, &X509_CINF_it); } int i2d_X509_CINF(X509_CINF *a, unsigned char **out) { return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CINF_it); } X509_CINF * X509_CINF_new(void) { return (X509_CINF *)ASN1_item_new(&X509_CINF_it); } void X509_CINF_free(X509_CINF *a) { ASN1_item_free((ASN1_VALUE *)a, &X509_CINF_it); } /* X509 top level structure needs a bit of customisation */ static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) { X509 *ret = (X509 *)*pval; switch (operation) { case ASN1_OP_NEW_POST: ret->valid = 0; ret->name = NULL; ret->ex_flags = 0; ret->ex_pathlen = -1; ret->skid = NULL; ret->akid = NULL; ret->aux = NULL; ret->crldp = NULL; #ifndef OPENSSL_NO_RFC3779 ret->rfc3779_addr = NULL; ret->rfc3779_asid = NULL; #endif CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data); break; case ASN1_OP_D2I_POST: free(ret->name); ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0); break; case ASN1_OP_FREE_POST: CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data); X509_CERT_AUX_free(ret->aux); ASN1_OCTET_STRING_free(ret->skid); AUTHORITY_KEYID_free(ret->akid); CRL_DIST_POINTS_free(ret->crldp); GENERAL_NAMES_free(ret->altname); NAME_CONSTRAINTS_free(ret->nc); #ifndef OPENSSL_NO_RFC3779 sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free); ASIdentifiers_free(ret->rfc3779_asid); #endif free(ret->name); ret->name = NULL; break; } return 1; } static const ASN1_AUX X509_aux = { .app_data = NULL, .flags = ASN1_AFLG_REFCOUNT, .ref_offset = offsetof(X509, references), .ref_lock = CRYPTO_LOCK_X509, .asn1_cb = x509_cb, }; static const ASN1_TEMPLATE X509_seq_tt[] = { { .offset = offsetof(X509, cert_info), .field_name = "cert_info", .item = &X509_CINF_it, }, { .offset = offsetof(X509, sig_alg), .field_name = "sig_alg", .item = &X509_ALGOR_it, }, { .offset = offsetof(X509, signature), .field_name = "signature", .item = &ASN1_BIT_STRING_it, }, }; const ASN1_ITEM X509_it = { .itype = ASN1_ITYPE_SEQUENCE, .utype = V_ASN1_SEQUENCE, .templates = X509_seq_tt, .tcount = sizeof(X509_seq_tt) / sizeof(ASN1_TEMPLATE), .funcs = &X509_aux, .size = sizeof(X509), .sname = "X509", }; X509 * d2i_X509(X509 **a, const unsigned char **in, long len) { return (X509 *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, &X509_it); } int i2d_X509(X509 *a, unsigned char **out) { return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_it); } X509 * X509_new(void) { return (X509 *)ASN1_item_new(&X509_it); } void X509_free(X509 *a) { ASN1_item_free((ASN1_VALUE *)a, &X509_it); } X509 * X509_dup(X509 *x) { return ASN1_item_dup(&X509_it, x); } int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) { return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp, new_func, dup_func, free_func); } int X509_set_ex_data(X509 *r, int idx, void *arg) { return (CRYPTO_set_ex_data(&r->ex_data, idx, arg)); } void * X509_get_ex_data(X509 *r, int idx) { return (CRYPTO_get_ex_data(&r->ex_data, idx)); } /* X509_AUX ASN1 routines. X509_AUX is the name given to * a certificate with extra info tagged on the end. Since these * functions set how a certificate is trusted they should only * be used when the certificate comes from a reliable source * such as local storage. * */ X509 * d2i_X509_AUX(X509 **a, const unsigned char **pp, long length) { const unsigned char *q; X509 *ret; /* Save start position */ q = *pp; ret = d2i_X509(NULL, pp, length); /* If certificate unreadable then forget it */ if (!ret) return NULL; /* update length */ length -= *pp - q; if (length > 0) { if (!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err; } if (a != NULL) { X509_free(*a); *a = ret; } return ret; err: X509_free(ret); return NULL; } int i2d_X509_AUX(X509 *a, unsigned char **pp) { int length; length = i2d_X509(a, pp); if (a) length += i2d_X509_CERT_AUX(a->aux, pp); return length; } int i2d_re_X509_tbs(X509 *x, unsigned char **pp) { x->cert_info->enc.modified = 1; return i2d_X509_CINF(x->cert_info, pp); } void X509_get0_signature(const ASN1_BIT_STRING **psig, const X509_ALGOR **palg, const X509 *x) { if (psig != NULL) *psig = x->signature; if (palg != NULL) *palg = x->sig_alg; } int X509_get_signature_nid(const X509 *x) { return OBJ_obj2nid(x->sig_alg->algorithm); }