diff options
Diffstat (limited to 'openssl/crypto/x509/x509_lu.c')
| -rw-r--r-- | openssl/crypto/x509/x509_lu.c | 567 |
1 files changed, 567 insertions, 0 deletions
diff --git a/openssl/crypto/x509/x509_lu.c b/openssl/crypto/x509/x509_lu.c new file mode 100644 index 000000000..cd2cfb6d8 --- /dev/null +++ b/openssl/crypto/x509/x509_lu.c @@ -0,0 +1,567 @@ +/* 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) |