/* * 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 "ext_dat.h" static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist); static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values); const X509V3_EXT_METHOD v3_akey_id = { NID_authority_key_identifier, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID), 0, 0, 0, 0, 0, 0, (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID, (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID, 0, 0, NULL }; static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist) { char *tmp; if (akeyid->keyid) { tmp = OPENSSL_buf2hexstr(akeyid->keyid->data, akeyid->keyid->length); if (tmp == NULL) { ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE); return NULL; } X509V3_add_value((akeyid->issuer || akeyid->serial) ? "keyid" : NULL, tmp, &extlist); OPENSSL_free(tmp); } if (akeyid->issuer) extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist); if (akeyid->serial) { tmp = OPENSSL_buf2hexstr(akeyid->serial->data, akeyid->serial->length); if (tmp == NULL) { ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE); return NULL; } X509V3_add_value("serial", tmp, &extlist); OPENSSL_free(tmp); } return extlist; } /*- * Currently two options: * keyid: use the issuers subject keyid, the value 'always' means its is * an error if the issuer certificate doesn't have a key id. * issuer: use the issuers cert issuer and serial number. The default is * to only use this if keyid is not present. With the option 'always' * this is always included. */ static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values) { char keyid = 0, issuer = 0; int i; CONF_VALUE *cnf; ASN1_OCTET_STRING *ikeyid = NULL; X509_NAME *isname = NULL; GENERAL_NAMES *gens = NULL; GENERAL_NAME *gen = NULL; ASN1_INTEGER *serial = NULL; X509_EXTENSION *ext; X509 *cert; AUTHORITY_KEYID *akeyid; for (i = 0; i < sk_CONF_VALUE_num(values); i++) { cnf = sk_CONF_VALUE_value(values, i); if (strcmp(cnf->name, "keyid") == 0) { keyid = 1; if (cnf->value && strcmp(cnf->value, "always") == 0) keyid = 2; } else if (strcmp(cnf->name, "issuer") == 0) { issuer = 1; if (cnf->value && strcmp(cnf->value, "always") == 0) issuer = 2; } else { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNKNOWN_OPTION); ERR_add_error_data(2, "name=", cnf->name); return NULL; } } if (!ctx || !ctx->issuer_cert) { if (ctx && (ctx->flags == CTX_TEST)) return AUTHORITY_KEYID_new(); X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_NO_ISSUER_CERTIFICATE); return NULL; } cert = ctx->issuer_cert; if (keyid) { i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1); if ((i >= 0) && (ext = X509_get_ext(cert, i))) ikeyid = X509V3_EXT_d2i(ext); if (keyid == 2 && !ikeyid) { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNABLE_TO_GET_ISSUER_KEYID); return NULL; } } if ((issuer && !ikeyid) || (issuer == 2)) { isname = X509_NAME_dup(X509_get_issuer_name(cert)); serial = ASN1_INTEGER_dup(X509_get_serialNumber(cert)); if (!isname || !serial) { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS); goto err; } } if ((akeyid = AUTHORITY_KEYID_new()) == NULL) goto err; if (isname) { if ((gens = sk_GENERAL_NAME_new_null()) == NULL || (gen = GENERAL_NAME_new()) == NULL || !sk_GENERAL_NAME_push(gens, gen)) { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE); goto err; } gen->type = GEN_DIRNAME; gen->d.dirn = isname; } akeyid->issuer = gens; gen = NULL; gens = NULL; akeyid->serial = serial; akeyid->keyid = ikeyid; return akeyid; err: sk_GENERAL_NAME_free(gens); GENERAL_NAME_free(gen); X509_NAME_free(isname); ASN1_INTEGER_free(serial); ASN1_OCTET_STRING_free(ikeyid); return NULL; }