x509_lu.c
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上传日期:2020-08-09
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- /* crypto/x509/x509_lu.c */
- /* 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 <stdio.h>
- #include "cryptlib.h"
- #include <openssl/lhash.h>
- #include <openssl/x509.h>
- #include <openssl/x509v3.h>
- X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
- {
- X509_LOOKUP *ret;
- ret=(X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP));
- if (ret == NULL) return NULL;
- ret->init=0;
- ret->skip=0;
- ret->method=method;
- ret->method_data=NULL;
- ret->store_ctx=NULL;
- if ((method->new_item != NULL) && !method->new_item(ret))
- {
- OPENSSL_free(ret);
- return NULL;
- }
- return ret;
- }
- void X509_LOOKUP_free(X509_LOOKUP *ctx)
- {
- if (ctx == NULL) return;
- if ( (ctx->method != NULL) &&
- (ctx->method->free != NULL))
- ctx->method->free(ctx);
- OPENSSL_free(ctx);
- }
- int X509_LOOKUP_init(X509_LOOKUP *ctx)
- {
- if (ctx->method == NULL) return 0;
- if (ctx->method->init != NULL)
- return ctx->method->init(ctx);
- else
- return 1;
- }
- int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
- {
- if (ctx->method == NULL) return 0;
- if (ctx->method->shutdown != NULL)
- return ctx->method->shutdown(ctx);
- else
- return 1;
- }
- int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
- char **ret)
- {
- if (ctx->method == NULL) return -1;
- if (ctx->method->ctrl != NULL)
- return ctx->method->ctrl(ctx,cmd,argc,argl,ret);
- else
- return 1;
- }
- int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
- X509_OBJECT *ret)
- {
- if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL))
- return X509_LU_FAIL;
- if (ctx->skip) return 0;
- return ctx->method->get_by_subject(ctx,type,name,ret);
- }
- int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
- ASN1_INTEGER *serial, X509_OBJECT *ret)
- {
- if ((ctx->method == NULL) ||
- (ctx->method->get_by_issuer_serial == NULL))
- return X509_LU_FAIL;
- return ctx->method->get_by_issuer_serial(ctx,type,name,serial,ret);
- }
- int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
- unsigned char *bytes, int len, X509_OBJECT *ret)
- {
- if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
- return X509_LU_FAIL;
- return ctx->method->get_by_fingerprint(ctx,type,bytes,len,ret);
- }
- int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len,
- X509_OBJECT *ret)
- {
- if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
- return X509_LU_FAIL;
- return ctx->method->get_by_alias(ctx,type,str,len,ret);
- }
-
- static int x509_object_cmp(const X509_OBJECT * const *a, const X509_OBJECT * const *b)
- {
- int ret;
- ret=((*a)->type - (*b)->type);
- if (ret) return ret;
- switch ((*a)->type)
- {
- case X509_LU_X509:
- ret=X509_subject_name_cmp((*a)->data.x509,(*b)->data.x509);
- break;
- case X509_LU_CRL:
- ret=X509_CRL_cmp((*a)->data.crl,(*b)->data.crl);
- break;
- default:
- /* abort(); */
- return 0;
- }
- return ret;
- }
- X509_STORE *X509_STORE_new(void)
- {
- X509_STORE *ret;
- if ((ret=(X509_STORE *)OPENSSL_malloc(sizeof(X509_STORE))) == NULL)
- return NULL;
- ret->objs = sk_X509_OBJECT_new(x509_object_cmp);
- ret->cache=1;
- ret->get_cert_methods=sk_X509_LOOKUP_new_null();
- ret->verify=0;
- ret->verify_cb=0;
- if ((ret->param = X509_VERIFY_PARAM_new()) == NULL)
- return NULL;
- ret->get_issuer = 0;
- ret->check_issued = 0;
- ret->check_revocation = 0;
- ret->get_crl = 0;
- ret->check_crl = 0;
- ret->cert_crl = 0;
- ret->cleanup = 0;
- CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data);
- ret->references=1;
- return ret;
- }
- static void cleanup(X509_OBJECT *a)
- {
- if (a->type == X509_LU_X509)
- {
- X509_free(a->data.x509);
- }
- else if (a->type == X509_LU_CRL)
- {
- X509_CRL_free(a->data.crl);
- }
- else
- {
- /* abort(); */
- }
- OPENSSL_free(a);
- }
- void X509_STORE_free(X509_STORE *vfy)
- {
- int i;
- STACK_OF(X509_LOOKUP) *sk;
- X509_LOOKUP *lu;
- if (vfy == NULL)
- return;
- sk=vfy->get_cert_methods;
- for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
- {
- lu=sk_X509_LOOKUP_value(sk,i);
- X509_LOOKUP_shutdown(lu);
- X509_LOOKUP_free(lu);
- }
- sk_X509_LOOKUP_free(sk);
- sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data);
- if (vfy->param)
- X509_VERIFY_PARAM_free(vfy->param);
- OPENSSL_free(vfy);
- }
- X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
- {
- int i;
- STACK_OF(X509_LOOKUP) *sk;
- X509_LOOKUP *lu;
- sk=v->get_cert_methods;
- for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
- {
- lu=sk_X509_LOOKUP_value(sk,i);
- if (m == lu->method)
- {
- return lu;
- }
- }
- /* a new one */
- lu=X509_LOOKUP_new(m);
- if (lu == NULL)
- return NULL;
- else
- {
- lu->store_ctx=v;
- if (sk_X509_LOOKUP_push(v->get_cert_methods,lu))
- return lu;
- else
- {
- X509_LOOKUP_free(lu);
- return NULL;
- }
- }
- }
- int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
- X509_OBJECT *ret)
- {
- X509_STORE *ctx=vs->ctx;
- X509_LOOKUP *lu;
- X509_OBJECT stmp,*tmp;
- int i,j;
- tmp=X509_OBJECT_retrieve_by_subject(ctx->objs,type,name);
- if (tmp == NULL)
- {
- for (i=vs->current_method; i<sk_X509_LOOKUP_num(ctx->get_cert_methods); i++)
- {
- lu=sk_X509_LOOKUP_value(ctx->get_cert_methods,i);
- j=X509_LOOKUP_by_subject(lu,type,name,&stmp);
- if (j < 0)
- {
- vs->current_method=j;
- return j;
- }
- else if (j)
- {
- tmp= &stmp;
- break;
- }
- }
- vs->current_method=0;
- if (tmp == NULL)
- return 0;
- }
- /* if (ret->data.ptr != NULL)
- X509_OBJECT_free_contents(ret); */
- ret->type=tmp->type;
- ret->data.ptr=tmp->data.ptr;
- X509_OBJECT_up_ref_count(ret);
- return 1;
- }
- int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
- {
- X509_OBJECT *obj;
- int ret=1;
- if (x == NULL) return 0;
- obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
- if (obj == NULL)
- {
- X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- obj->type=X509_LU_X509;
- obj->data.x509=x;
- CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
- X509_OBJECT_up_ref_count(obj);
- if (X509_OBJECT_retrieve_match(ctx->objs, obj))
- {
- X509_OBJECT_free_contents(obj);
- OPENSSL_free(obj);
- X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
- ret=0;
- }
- else sk_X509_OBJECT_push(ctx->objs, obj);
- CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
- return ret;
- }
- int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
- {
- X509_OBJECT *obj;
- int ret=1;
- if (x == NULL) return 0;
- obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
- if (obj == NULL)
- {
- X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- obj->type=X509_LU_CRL;
- obj->data.crl=x;
- CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
- X509_OBJECT_up_ref_count(obj);
- if (X509_OBJECT_retrieve_match(ctx->objs, obj))
- {
- X509_OBJECT_free_contents(obj);
- OPENSSL_free(obj);
- X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
- ret=0;
- }
- else sk_X509_OBJECT_push(ctx->objs, obj);
- CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
- return ret;
- }
- void X509_OBJECT_up_ref_count(X509_OBJECT *a)
- {
- switch (a->type)
- {
- case X509_LU_X509:
- CRYPTO_add(&a->data.x509->references,1,CRYPTO_LOCK_X509);
- break;
- case X509_LU_CRL:
- CRYPTO_add(&a->data.crl->references,1,CRYPTO_LOCK_X509_CRL);
- break;
- }
- }
- void X509_OBJECT_free_contents(X509_OBJECT *a)
- {
- switch (a->type)
- {
- case X509_LU_X509:
- X509_free(a->data.x509);
- break;
- case X509_LU_CRL:
- X509_CRL_free(a->data.crl);
- break;
- }
- }
- int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
- X509_NAME *name)
- {
- X509_OBJECT stmp;
- X509 x509_s;
- X509_CINF cinf_s;
- X509_CRL crl_s;
- X509_CRL_INFO crl_info_s;
- stmp.type=type;
- switch (type)
- {
- case X509_LU_X509:
- stmp.data.x509= &x509_s;
- x509_s.cert_info= &cinf_s;
- cinf_s.subject=name;
- break;
- case X509_LU_CRL:
- stmp.data.crl= &crl_s;
- crl_s.crl= &crl_info_s;
- crl_info_s.issuer=name;
- break;
- default:
- /* abort(); */
- return -1;
- }
- return sk_X509_OBJECT_find(h,&stmp);
- }
- X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, int type,
- X509_NAME *name)
- {
- int idx;
- idx = X509_OBJECT_idx_by_subject(h, type, name);
- if (idx==-1) return NULL;
- return sk_X509_OBJECT_value(h, idx);
- }
- X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x)
- {
- int idx, i;
- X509_OBJECT *obj;
- idx = sk_X509_OBJECT_find(h, x);
- if (idx == -1) return NULL;
- if (x->type != X509_LU_X509) return sk_X509_OBJECT_value(h, idx);
- for (i = idx; i < sk_X509_OBJECT_num(h); i++)
- {
- obj = sk_X509_OBJECT_value(h, i);
- if (x509_object_cmp((const X509_OBJECT **)&obj, (const X509_OBJECT **)&x))
- return NULL;
- if ((x->type != X509_LU_X509) || !X509_cmp(obj->data.x509, x->data.x509))
- return obj;
- }
- return NULL;
- }
- /* Try to get issuer certificate from store. Due to limitations
- * of the API this can only retrieve a single certificate matching
- * a given subject name. However it will fill the cache with all
- * matching certificates, so we can examine the cache for all
- * matches.
- *
- * Return values are:
- * 1 lookup successful.
- * 0 certificate not found.
- * -1 some other error.
- */
- int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
- {
- X509_NAME *xn;
- X509_OBJECT obj, *pobj;
- int i, ok, idx;
- xn=X509_get_issuer_name(x);
- ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
- if (ok != X509_LU_X509)
- {
- if (ok == X509_LU_RETRY)
- {
- X509_OBJECT_free_contents(&obj);
- X509err(X509_F_X509_STORE_CTX_GET1_ISSUER,X509_R_SHOULD_RETRY);
- return -1;
- }
- else if (ok != X509_LU_FAIL)
- {
- X509_OBJECT_free_contents(&obj);
- /* not good :-(, break anyway */
- return -1;
- }
- return 0;
- }
- /* If certificate matches all OK */
- if (ctx->check_issued(ctx, x, obj.data.x509))
- {
- *issuer = obj.data.x509;
- return 1;
- }
- X509_OBJECT_free_contents(&obj);
- /* Else find index of first matching cert */
- idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
- /* This shouldn't normally happen since we already have one match */
- if (idx == -1) return 0;
- /* Look through all matching certificates for a suitable issuer */
- for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++)
- {
- pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
- /* See if we've ran out of matches */
- if (pobj->type != X509_LU_X509) return 0;
- if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509))) return 0;
- if (ctx->check_issued(ctx, x, pobj->data.x509))
- {
- *issuer = pobj->data.x509;
- X509_OBJECT_up_ref_count(pobj);
- return 1;
- }
- }
- return 0;
- }
- int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags)
- {
- return X509_VERIFY_PARAM_set_flags(ctx->param, flags);
- }
- int X509_STORE_set_depth(X509_STORE *ctx, int depth)
- {
- X509_VERIFY_PARAM_set_depth(ctx->param, depth);
- return 1;
- }
- int X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
- {
- return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
- }
- int X509_STORE_set_trust(X509_STORE *ctx, int trust)
- {
- return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
- }
- int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param)
- {
- return X509_VERIFY_PARAM_set1(ctx->param, param);
- }
- IMPLEMENT_STACK_OF(X509_LOOKUP)
- IMPLEMENT_STACK_OF(X509_OBJECT)