--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ssl/libcrypto/src/crypto/x509/x509_vfy.c Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,1541 @@
+/* crypto/x509/x509_vfy.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 <time.h>
+#include <errno.h>
+
+#include "cryptlib.h"
+#include <openssl/crypto.h>
+#include <openssl/lhash.h>
+#include <openssl/buffer.h>
+#include <openssl/evp.h>
+#include <openssl/asn1.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/objects.h>
+
+static int null_callback(int ok,X509_STORE_CTX *e);
+static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
+static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x);
+static int check_chain_extensions(X509_STORE_CTX *ctx);
+static int check_trust(X509_STORE_CTX *ctx);
+static int check_revocation(X509_STORE_CTX *ctx);
+static int check_cert(X509_STORE_CTX *ctx);
+static int check_policy(X509_STORE_CTX *ctx);
+static int internal_verify(X509_STORE_CTX *ctx);
+const char X509_version[]="X.509" OPENSSL_VERSION_PTEXT;
+
+
+static int null_callback(int ok, X509_STORE_CTX *e)
+ {
+ return ok;
+ }
+
+#if 0
+static int x509_subject_cmp(X509 **a, X509 **b)
+ {
+ return X509_subject_name_cmp(*a,*b);
+ }
+#endif
+
+EXPORT_C int X509_verify_cert(X509_STORE_CTX *ctx)
+ {
+ X509 *x,*xtmp,*chain_ss=NULL;
+ X509_NAME *xn;
+ int bad_chain = 0;
+ X509_VERIFY_PARAM *param = ctx->param;
+ int depth,i,ok=0;
+ int num;
+ int (*cb)(int xok,X509_STORE_CTX *xctx);
+ STACK_OF(X509) *sktmp=NULL;
+ if (ctx->cert == NULL)
+ {
+ X509err(X509_F_X509_VERIFY_CERT,X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
+ return -1;
+ }
+
+ cb=ctx->verify_cb;
+
+ /* first we make sure the chain we are going to build is
+ * present and that the first entry is in place */
+ if (ctx->chain == NULL)
+ {
+ if ( ((ctx->chain=sk_X509_new_null()) == NULL) ||
+ (!sk_X509_push(ctx->chain,ctx->cert)))
+ {
+ X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
+ goto end;
+ }
+ CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
+ ctx->last_untrusted=1;
+ }
+
+ /* We use a temporary STACK so we can chop and hack at it */
+ if (ctx->untrusted != NULL
+ && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
+ {
+ X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
+ goto end;
+ }
+
+ num=sk_X509_num(ctx->chain);
+ x=sk_X509_value(ctx->chain,num-1);
+ depth=param->depth;
+
+
+ for (;;)
+ {
+ /* If we have enough, we break */
+ if (depth < num) break; /* FIXME: If this happens, we should take
+ * note of it and, if appropriate, use the
+ * X509_V_ERR_CERT_CHAIN_TOO_LONG error
+ * code later.
+ */
+
+ /* If we are self signed, we break */
+ xn=X509_get_issuer_name(x);
+ if (ctx->check_issued(ctx, x,x)) break;
+
+ /* If we were passed a cert chain, use it first */
+ if (ctx->untrusted != NULL)
+ {
+ xtmp=find_issuer(ctx, sktmp,x);
+ if (xtmp != NULL)
+ {
+ if (!sk_X509_push(ctx->chain,xtmp))
+ {
+ X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
+ goto end;
+ }
+ CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
+ (void)sk_X509_delete_ptr(sktmp,xtmp);
+ ctx->last_untrusted++;
+ x=xtmp;
+ num++;
+ /* reparse the full chain for
+ * the next one */
+ continue;
+ }
+ }
+ break;
+ }
+
+ /* at this point, chain should contain a list of untrusted
+ * certificates. We now need to add at least one trusted one,
+ * if possible, otherwise we complain. */
+
+ /* Examine last certificate in chain and see if it
+ * is self signed.
+ */
+
+ i=sk_X509_num(ctx->chain);
+ x=sk_X509_value(ctx->chain,i-1);
+ xn = X509_get_subject_name(x);
+ if (ctx->check_issued(ctx, x, x))
+ {
+ /* we have a self signed certificate */
+ if (sk_X509_num(ctx->chain) == 1)
+ {
+ /* We have a single self signed certificate: see if
+ * we can find it in the store. We must have an exact
+ * match to avoid possible impersonation.
+ */
+ ok = ctx->get_issuer(&xtmp, ctx, x);
+ if ((ok <= 0) || X509_cmp(x, xtmp))
+ {
+ ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
+ ctx->current_cert=x;
+ ctx->error_depth=i-1;
+ if (ok == 1) X509_free(xtmp);
+ bad_chain = 1;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ else
+ {
+ /* We have a match: replace certificate with store version
+ * so we get any trust settings.
+ */
+ X509_free(x);
+ x = xtmp;
+ (void)sk_X509_set(ctx->chain, i - 1, x);
+ ctx->last_untrusted=0;
+ }
+ }
+ else
+ {
+ /* extract and save self signed certificate for later use */
+ chain_ss=sk_X509_pop(ctx->chain);
+ ctx->last_untrusted--;
+ num--;
+ x=sk_X509_value(ctx->chain,num-1);
+ }
+ }
+
+ /* We now lookup certs from the certificate store */
+ for (;;)
+ {
+ /* If we have enough, we break */
+ if (depth < num) break;
+
+ /* If we are self signed, we break */
+ xn=X509_get_issuer_name(x);
+ if (ctx->check_issued(ctx,x,x)) break;
+
+ ok = ctx->get_issuer(&xtmp, ctx, x);
+
+ if (ok < 0) return ok;
+ if (ok == 0) break;
+
+ x = xtmp;
+ if (!sk_X509_push(ctx->chain,x))
+ {
+ X509_free(xtmp);
+ X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ num++;
+ }
+
+ /* we now have our chain, lets check it... */
+ xn=X509_get_issuer_name(x);
+
+ /* Is last certificate looked up self signed? */
+ if (!ctx->check_issued(ctx,x,x))
+ {
+ if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss))
+ {
+ if (ctx->last_untrusted >= num)
+ ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
+ else
+ ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
+ ctx->current_cert=x;
+ }
+ else
+ {
+
+ sk_X509_push(ctx->chain,chain_ss);
+ num++;
+ ctx->last_untrusted=num;
+ ctx->current_cert=chain_ss;
+ ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
+ chain_ss=NULL;
+ }
+
+ ctx->error_depth=num-1;
+ bad_chain = 1;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+
+ /* We have the chain complete: now we need to check its purpose */
+ ok = check_chain_extensions(ctx);
+
+ if (!ok) goto end;
+
+ /* The chain extensions are OK: check trust */
+
+ if (param->trust > 0) ok = check_trust(ctx);
+
+ if (!ok) goto end;
+
+ /* We may as well copy down any DSA parameters that are required */
+ X509_get_pubkey_parameters(NULL,ctx->chain);
+
+ /* Check revocation status: we do this after copying parameters
+ * because they may be needed for CRL signature verification.
+ */
+
+ ok = ctx->check_revocation(ctx);
+ if(!ok) goto end;
+
+ /* At this point, we have a chain and need to verify it */
+ if (ctx->verify != NULL)
+ ok=ctx->verify(ctx);
+ else
+ ok=internal_verify(ctx);
+ if(!ok) goto end;
+
+
+ /* If we get this far evaluate policies */
+ if (!bad_chain && (ctx->param->flags & X509_V_FLAG_POLICY_CHECK))
+ ok = ctx->check_policy(ctx);
+ if(!ok) goto end;
+ if (0)
+ {
+end:
+ X509_get_pubkey_parameters(NULL,ctx->chain);
+ }
+ if (sktmp != NULL) sk_X509_free(sktmp);
+ if (chain_ss != NULL) X509_free(chain_ss);
+ return ok;
+ }
+
+
+/* Given a STACK_OF(X509) find the issuer of cert (if any)
+ */
+
+static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x)
+{
+ int i;
+ X509 *issuer;
+ for (i = 0; i < sk_X509_num(sk); i++)
+ {
+ issuer = sk_X509_value(sk, i);
+ if (ctx->check_issued(ctx, x, issuer))
+ return issuer;
+ }
+ return NULL;
+}
+
+/* Given a possible certificate and issuer check them */
+
+static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
+{
+ int ret;
+ ret = X509_check_issued(issuer, x);
+ if (ret == X509_V_OK)
+ return 1;
+ /* If we haven't asked for issuer errors don't set ctx */
+ if (!(ctx->param->flags & X509_V_FLAG_CB_ISSUER_CHECK))
+ return 0;
+
+ ctx->error = ret;
+ ctx->current_cert = x;
+ ctx->current_issuer = issuer;
+ return ctx->verify_cb(0, ctx);
+ return 0;
+}
+
+/* Alternative lookup method: look from a STACK stored in other_ctx */
+
+static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
+{
+ *issuer = find_issuer(ctx, ctx->other_ctx, x);
+ if (*issuer)
+ {
+ CRYPTO_add(&(*issuer)->references,1,CRYPTO_LOCK_X509);
+ return 1;
+ }
+ else
+ return 0;
+}
+
+
+/* Check a certificate chains extensions for consistency
+ * with the supplied purpose
+ */
+
+static int check_chain_extensions(X509_STORE_CTX *ctx)
+{
+#ifdef OPENSSL_NO_CHAIN_VERIFY
+ return 1;
+#else
+ int i, ok=0, must_be_ca;
+ X509 *x;
+ int (*cb)(int xok,X509_STORE_CTX *xctx);
+ int proxy_path_length = 0;
+ int allow_proxy_certs =
+ !!(ctx->param->flags & X509_V_FLAG_ALLOW_PROXY_CERTS);
+ cb=ctx->verify_cb;
+
+ /* must_be_ca can have 1 of 3 values:
+ -1: we accept both CA and non-CA certificates, to allow direct
+ use of self-signed certificates (which are marked as CA).
+ 0: we only accept non-CA certificates. This is currently not
+ used, but the possibility is present for future extensions.
+ 1: we only accept CA certificates. This is currently used for
+ all certificates in the chain except the leaf certificate.
+ */
+ must_be_ca = -1;
+
+ /* A hack to keep people who don't want to modify their software
+ happy */
+ if (getenv("OPENSSL_ALLOW_PROXY_CERTS"))
+ allow_proxy_certs = 1;
+
+ /* Check all untrusted certificates */
+ for (i = 0; i < ctx->last_untrusted; i++)
+ {
+ int ret;
+ x = sk_X509_value(ctx->chain, i);
+ if (!(ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
+ && (x->ex_flags & EXFLAG_CRITICAL))
+ {
+ ctx->error = X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION;
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ if (!allow_proxy_certs && (x->ex_flags & EXFLAG_PROXY))
+ {
+ ctx->error = X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED;
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ ret = X509_check_ca(x);
+ switch(must_be_ca)
+ {
+ case -1:
+ if ((ctx->param->flags & X509_V_FLAG_X509_STRICT)
+ && (ret != 1) && (ret != 0))
+ {
+ ret = 0;
+ ctx->error = X509_V_ERR_INVALID_CA;
+ }
+ else
+ ret = 1;
+ break;
+ case 0:
+ if (ret != 0)
+ {
+ ret = 0;
+ ctx->error = X509_V_ERR_INVALID_NON_CA;
+ }
+ else
+ ret = 1;
+ break;
+ default:
+ if ((ret == 0)
+ || ((ctx->param->flags & X509_V_FLAG_X509_STRICT)
+ && (ret != 1)))
+ {
+ ret = 0;
+ ctx->error = X509_V_ERR_INVALID_CA;
+ }
+ else
+ ret = 1;
+ break;
+ }
+ if (ret == 0)
+ {
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ if (ctx->param->purpose > 0)
+ {
+ ret = X509_check_purpose(x, ctx->param->purpose,
+ must_be_ca > 0);
+ if ((ret == 0)
+ || ((ctx->param->flags & X509_V_FLAG_X509_STRICT)
+ && (ret != 1)))
+ {
+ ctx->error = X509_V_ERR_INVALID_PURPOSE;
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ }
+ /* Check pathlen */
+ if ((i > 1) && (x->ex_pathlen != -1)
+ && (i > (x->ex_pathlen + proxy_path_length + 1)))
+ {
+ ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ /* If this certificate is a proxy certificate, the next
+ certificate must be another proxy certificate or a EE
+ certificate. If not, the next certificate must be a
+ CA certificate. */
+ if (x->ex_flags & EXFLAG_PROXY)
+ {
+ if (x->ex_pcpathlen != -1 && i > x->ex_pcpathlen)
+ {
+ ctx->error =
+ X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED;
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ ok=cb(0,ctx);
+ if (!ok) goto end;
+ }
+ proxy_path_length++;
+ must_be_ca = 0;
+ }
+ else
+ must_be_ca = 1;
+ }
+ ok = 1;
+ end:
+ return ok;
+#endif
+}
+
+static int check_trust(X509_STORE_CTX *ctx)
+{
+#ifdef OPENSSL_NO_CHAIN_VERIFY
+ return 1;
+#else
+ int i, ok;
+ X509 *x;
+ int (*cb)(int xok,X509_STORE_CTX *xctx);
+ cb=ctx->verify_cb;
+/* For now just check the last certificate in the chain */
+ i = sk_X509_num(ctx->chain) - 1;
+ x = sk_X509_value(ctx->chain, i);
+ ok = X509_check_trust(x, ctx->param->trust, 0);
+ if (ok == X509_TRUST_TRUSTED)
+ return 1;
+ ctx->error_depth = i;
+ ctx->current_cert = x;
+ if (ok == X509_TRUST_REJECTED)
+ ctx->error = X509_V_ERR_CERT_REJECTED;
+ else
+ ctx->error = X509_V_ERR_CERT_UNTRUSTED;
+ ok = cb(0, ctx);
+ return ok;
+#endif
+}
+
+static int check_revocation(X509_STORE_CTX *ctx)
+ {
+ int i, last, ok;
+ if (!(ctx->param->flags & X509_V_FLAG_CRL_CHECK))
+ return 1;
+ if (ctx->param->flags & X509_V_FLAG_CRL_CHECK_ALL)
+ last = sk_X509_num(ctx->chain) - 1;
+ else
+ last = 0;
+ for(i = 0; i <= last; i++)
+ {
+ ctx->error_depth = i;
+ ok = check_cert(ctx);
+ if (!ok) return ok;
+ }
+ return 1;
+ }
+
+static int check_cert(X509_STORE_CTX *ctx)
+ {
+ X509_CRL *crl = NULL;
+ X509 *x;
+ int ok, cnum;
+ cnum = ctx->error_depth;
+ x = sk_X509_value(ctx->chain, cnum);
+ ctx->current_cert = x;
+ /* Try to retrieve relevant CRL */
+ ok = ctx->get_crl(ctx, &crl, x);
+ /* If error looking up CRL, nothing we can do except
+ * notify callback
+ */
+ if(!ok)
+ {
+ ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
+ ok = ctx->verify_cb(0, ctx);
+ goto err;
+ }
+ ctx->current_crl = crl;
+ ok = ctx->check_crl(ctx, crl);
+ if (!ok) goto err;
+ ok = ctx->cert_crl(ctx, crl, x);
+ err:
+ ctx->current_crl = NULL;
+ X509_CRL_free(crl);
+ return ok;
+
+ }
+
+/* Check CRL times against values in X509_STORE_CTX */
+
+static int check_crl_time(X509_STORE_CTX *ctx, X509_CRL *crl, int notify)
+ {
+ time_t *ptime;
+ int i;
+ ctx->current_crl = crl;
+ if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
+ ptime = &ctx->param->check_time;
+ else
+ ptime = NULL;
+
+ i=X509_cmp_time(X509_CRL_get_lastUpdate(crl), ptime);
+ if (i == 0)
+ {
+ ctx->error=X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD;
+ if (!notify || !ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ if (i > 0)
+ {
+ ctx->error=X509_V_ERR_CRL_NOT_YET_VALID;
+ if (!notify || !ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ if(X509_CRL_get_nextUpdate(crl))
+ {
+ i=X509_cmp_time(X509_CRL_get_nextUpdate(crl), ptime);
+
+ if (i == 0)
+ {
+ ctx->error=X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD;
+ if (!notify || !ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ if (i < 0)
+ {
+ ctx->error=X509_V_ERR_CRL_HAS_EXPIRED;
+ if (!notify || !ctx->verify_cb(0, ctx))
+ return 0;
+ }
+ }
+
+ ctx->current_crl = NULL;
+
+ return 1;
+ }
+
+/* Lookup CRLs from the supplied list. Look for matching isser name
+ * and validity. If we can't find a valid CRL return the last one
+ * with matching name. This gives more meaningful error codes. Otherwise
+ * we'd get a CRL not found error if a CRL existed with matching name but
+ * was invalid.
+ */
+
+static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl,
+ X509_NAME *nm, STACK_OF(X509_CRL) *crls)
+ {
+ int i;
+ X509_CRL *crl, *best_crl = NULL;
+ for (i = 0; i < sk_X509_CRL_num(crls); i++)
+ {
+ crl = sk_X509_CRL_value(crls, i);
+ if (X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
+ continue;
+ if (check_crl_time(ctx, crl, 0))
+ {
+ *pcrl = crl;
+ CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509);
+ return 1;
+ }
+ best_crl = crl;
+ }
+ if (best_crl)
+ {
+ *pcrl = best_crl;
+ CRYPTO_add(&best_crl->references, 1, CRYPTO_LOCK_X509);
+ }
+
+ return 0;
+ }
+
+/* Retrieve CRL corresponding to certificate: currently just a
+ * subject lookup: maybe use AKID later...
+ */
+static int get_crl(X509_STORE_CTX *ctx, X509_CRL **pcrl, X509 *x)
+ {
+ int ok;
+ X509_CRL *crl = NULL;
+ X509_OBJECT xobj;
+ X509_NAME *nm;
+ nm = X509_get_issuer_name(x);
+ ok = get_crl_sk(ctx, &crl, nm, ctx->crls);
+ if (ok)
+ {
+ *pcrl = crl;
+ return 1;
+ }
+
+ ok = X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj);
+
+ if (!ok)
+ {
+ /* If we got a near match from get_crl_sk use that */
+ if (crl)
+ {
+ *pcrl = crl;
+ return 1;
+ }
+ return 0;
+ }
+
+ *pcrl = xobj.data.crl;
+ if (crl)
+ X509_CRL_free(crl);
+ return 1;
+ }
+
+/* Check CRL validity */
+static int check_crl(X509_STORE_CTX *ctx, X509_CRL *crl)
+ {
+ X509 *issuer = NULL;
+ EVP_PKEY *ikey = NULL;
+ int ok = 0, chnum, cnum;
+ cnum = ctx->error_depth;
+ chnum = sk_X509_num(ctx->chain) - 1;
+ /* Find CRL issuer: if not last certificate then issuer
+ * is next certificate in chain.
+ */
+ if(cnum < chnum)
+ issuer = sk_X509_value(ctx->chain, cnum + 1);
+ else
+ {
+ issuer = sk_X509_value(ctx->chain, chnum);
+ /* If not self signed, can't check signature */
+ if(!ctx->check_issued(ctx, issuer, issuer))
+ {
+ ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER;
+ ok = ctx->verify_cb(0, ctx);
+ if(!ok) goto err;
+ }
+ }
+
+ if(issuer)
+ {
+ /* Check for cRLSign bit if keyUsage present */
+ if ((issuer->ex_flags & EXFLAG_KUSAGE) &&
+ !(issuer->ex_kusage & KU_CRL_SIGN))
+ {
+ ctx->error = X509_V_ERR_KEYUSAGE_NO_CRL_SIGN;
+ ok = ctx->verify_cb(0, ctx);
+ if(!ok) goto err;
+ }
+
+ /* Attempt to get issuer certificate public key */
+ ikey = X509_get_pubkey(issuer);
+
+ if(!ikey)
+ {
+ ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
+ ok = ctx->verify_cb(0, ctx);
+ if (!ok) goto err;
+ }
+ else
+ {
+ /* Verify CRL signature */
+ if(X509_CRL_verify(crl, ikey) <= 0)
+ {
+ ctx->error=X509_V_ERR_CRL_SIGNATURE_FAILURE;
+ ok = ctx->verify_cb(0, ctx);
+ if (!ok) goto err;
+ }
+ }
+ }
+
+ ok = check_crl_time(ctx, crl, 1);
+ if (!ok)
+ goto err;
+
+ ok = 1;
+
+ err:
+ EVP_PKEY_free(ikey);
+ return ok;
+ }
+
+/* Check certificate against CRL */
+static int cert_crl(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x)
+ {
+ int idx, ok;
+ X509_REVOKED rtmp;
+ STACK_OF(X509_EXTENSION) *exts;
+ X509_EXTENSION *ext;
+ /* Look for serial number of certificate in CRL */
+ rtmp.serialNumber = X509_get_serialNumber(x);
+ /* Sort revoked into serial number order if not already sorted.
+ * Do this under a lock to avoid race condition.
+ */
+ if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked))
+ {
+ CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
+ sk_X509_REVOKED_sort(crl->crl->revoked);
+ CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
+ }
+ idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
+ /* If found assume revoked: want something cleverer than
+ * this to handle entry extensions in V2 CRLs.
+ */
+ if(idx >= 0)
+ {
+ ctx->error = X509_V_ERR_CERT_REVOKED;
+ ok = ctx->verify_cb(0, ctx);
+ if (!ok) return 0;
+ }
+
+ if (ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
+ return 1;
+
+ /* See if we have any critical CRL extensions: since we
+ * currently don't handle any CRL extensions the CRL must be
+ * rejected.
+ * This code accesses the X509_CRL structure directly: applications
+ * shouldn't do this.
+ */
+
+ exts = crl->crl->extensions;
+
+ for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++)
+ {
+ ext = sk_X509_EXTENSION_value(exts, idx);
+ if (ext->critical > 0)
+ {
+ ctx->error =
+ X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION;
+ ok = ctx->verify_cb(0, ctx);
+ if(!ok) return 0;
+ break;
+ }
+ }
+ return 1;
+ }
+
+static int check_policy(X509_STORE_CTX *ctx)
+ {
+ int ret;
+ ret = X509_policy_check(&ctx->tree, &ctx->explicit_policy, ctx->chain,
+ ctx->param->policies, ctx->param->flags);
+ if (ret == 0)
+ {
+ X509err(X509_F_CHECK_POLICY,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ /* Invalid or inconsistent extensions */
+ if (ret == -1)
+ {
+ /* Locate certificates with bad extensions and notify
+ * callback.
+ */
+ X509 *x;
+ int i;
+ for (i = 1; i < sk_X509_num(ctx->chain); i++)
+ {
+ x = sk_X509_value(ctx->chain, i);
+ if (!(x->ex_flags & EXFLAG_INVALID_POLICY))
+ continue;
+ ctx->current_cert = x;
+ ctx->error = X509_V_ERR_INVALID_POLICY_EXTENSION;
+ ret = ctx->verify_cb(0, ctx);
+ }
+ return 1;
+ }
+ if (ret == -2)
+ {
+ ctx->current_cert = NULL;
+ ctx->error = X509_V_ERR_NO_EXPLICIT_POLICY;
+ return ctx->verify_cb(0, ctx);
+ }
+
+ if (ctx->param->flags & X509_V_FLAG_NOTIFY_POLICY)
+ {
+ ctx->current_cert = NULL;
+ ctx->error = X509_V_OK;
+ if (!ctx->verify_cb(2, ctx))
+ return 0;
+ }
+
+ return 1;
+ }
+
+static int check_cert_time(X509_STORE_CTX *ctx, X509 *x)
+ {
+ time_t *ptime;
+ int i;
+
+ if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
+ ptime = &ctx->param->check_time;
+ else
+ ptime = NULL;
+
+ i=X509_cmp_time(X509_get_notBefore(x), ptime);
+ if (i == 0)
+ {
+ ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
+ ctx->current_cert=x;
+ if (!ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ if (i > 0)
+ {
+ ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
+ ctx->current_cert=x;
+ if (!ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ i=X509_cmp_time(X509_get_notAfter(x), ptime);
+ if (i == 0)
+ {
+ ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
+ ctx->current_cert=x;
+ if (!ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ if (i < 0)
+ {
+ ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
+ ctx->current_cert=x;
+ if (!ctx->verify_cb(0, ctx))
+ return 0;
+ }
+
+ return 1;
+ }
+
+static int internal_verify(X509_STORE_CTX *ctx)
+ {
+ int ok=0,n;
+ X509 *xs,*xi;
+ EVP_PKEY *pkey=NULL;
+ int (*cb)(int xok,X509_STORE_CTX *xctx);
+
+ cb=ctx->verify_cb;
+
+ n=sk_X509_num(ctx->chain);
+ ctx->error_depth=n-1;
+ n--;
+ xi=sk_X509_value(ctx->chain,n);
+
+ if (ctx->check_issued(ctx, xi, xi))
+ xs=xi;
+ else
+ {
+ if (n <= 0)
+ {
+ ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
+ ctx->current_cert=xi;
+ ok=cb(0,ctx);
+ goto end;
+ }
+ else
+ {
+ n--;
+ ctx->error_depth=n;
+ xs=sk_X509_value(ctx->chain,n);
+ }
+ }
+
+/* ctx->error=0; not needed */
+ while (n >= 0)
+ {
+ ctx->error_depth=n;
+ if (!xs->valid)
+ {
+ if ((pkey=X509_get_pubkey(xi)) == NULL)
+ {
+ ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
+ ctx->current_cert=xi;
+ ok=(*cb)(0,ctx);
+ if (!ok) goto end;
+ }
+ else if (X509_verify(xs,pkey) <= 0)
+ /* XXX For the final trusted self-signed cert,
+ * this is a waste of time. That check should
+ * optional so that e.g. 'openssl x509' can be
+ * used to detect invalid self-signatures, but
+ * we don't verify again and again in SSL
+ * handshakes and the like once the cert has
+ * been declared trusted. */
+ {
+ ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
+ ctx->current_cert=xs;
+ ok=(*cb)(0,ctx);
+ if (!ok)
+ {
+ EVP_PKEY_free(pkey);
+ goto end;
+ }
+ }
+ EVP_PKEY_free(pkey);
+ pkey=NULL;
+ }
+
+ xs->valid = 1;
+
+ ok = check_cert_time(ctx, xs);
+ if (!ok)
+ goto end;
+
+ /* The last error (if any) is still in the error value */
+ ctx->current_issuer=xi;
+ ctx->current_cert=xs;
+ ok=(*cb)(1,ctx);
+ if (!ok) goto end;
+
+ n--;
+ if (n >= 0)
+ {
+ xi=xs;
+ xs=sk_X509_value(ctx->chain,n);
+ }
+ }
+ ok=1;
+end:
+ return ok;
+ }
+
+EXPORT_C int X509_cmp_current_time(ASN1_TIME *ctm)
+{
+ return X509_cmp_time(ctm, NULL);
+}
+
+EXPORT_C int X509_cmp_time(ASN1_TIME *ctm, time_t *cmp_time)
+ {
+ char *str;
+ ASN1_TIME atm;
+ long offset;
+ char buff1[24],buff2[24],*p;
+ int i,j;
+
+ p=buff1;
+ i=ctm->length;
+ str=(char *)ctm->data;
+ if (ctm->type == V_ASN1_UTCTIME)
+ {
+ if ((i < 11) || (i > 17)) return 0;
+ memcpy(p,str,10);
+ p+=10;
+ str+=10;
+ }
+ else
+ {
+ if (i < 13) return 0;
+ memcpy(p,str,12);
+ p+=12;
+ str+=12;
+ }
+
+ if ((*str == 'Z') || (*str == '-') || (*str == '+'))
+ { *(p++)='0'; *(p++)='0'; }
+ else
+ {
+ *(p++)= *(str++);
+ *(p++)= *(str++);
+ /* Skip any fractional seconds... */
+ if (*str == '.')
+ {
+ str++;
+ while ((*str >= '0') && (*str <= '9')) str++;
+ }
+
+ }
+ *(p++)='Z';
+ *(p++)='\0';
+
+ if (*str == 'Z')
+ offset=0;
+ else
+ {
+ if ((*str != '+') && (*str != '-'))
+ return 0;
+ offset=((str[1]-'0')*10+(str[2]-'0'))*60;
+ offset+=(str[3]-'0')*10+(str[4]-'0');
+ if (*str == '-')
+ offset= -offset;
+ }
+ atm.type=ctm->type;
+ atm.length=sizeof(buff2);
+ atm.data=(unsigned char *)buff2;
+
+ if (X509_time_adj(&atm,-offset*60, cmp_time) == NULL)
+ return 0;
+
+ if (ctm->type == V_ASN1_UTCTIME)
+ {
+ i=(buff1[0]-'0')*10+(buff1[1]-'0');
+ if (i < 50) i+=100; /* cf. RFC 2459 */
+ j=(buff2[0]-'0')*10+(buff2[1]-'0');
+ if (j < 50) j+=100;
+
+ if (i < j) return -1;
+ if (i > j) return 1;
+ }
+ i=strcmp(buff1,buff2);
+ if (i == 0) /* wait a second then return younger :-) */
+ return -1;
+ else
+ return i;
+ }
+
+EXPORT_C ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
+{
+ return X509_time_adj(s, adj, NULL);
+}
+
+EXPORT_C ASN1_TIME *X509_time_adj(ASN1_TIME *s, long adj, time_t *in_tm)
+ {
+ time_t t;
+ int type = -1;
+
+ if (in_tm) t = *in_tm;
+ else time(&t);
+
+ t+=adj;
+ if (s) type = s->type;
+ if (type == V_ASN1_UTCTIME) return ASN1_UTCTIME_set(s,t);
+ if (type == V_ASN1_GENERALIZEDTIME) return ASN1_GENERALIZEDTIME_set(s, t);
+ return ASN1_TIME_set(s, t);
+ }
+
+EXPORT_C int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
+ {
+ EVP_PKEY *ktmp=NULL,*ktmp2;
+ int i,j;
+
+ if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return 1;
+
+ for (i=0; i<sk_X509_num(chain); i++)
+ {
+ ktmp=X509_get_pubkey(sk_X509_value(chain,i));
+ if (ktmp == NULL)
+ {
+ X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
+ return 0;
+ }
+ if (!EVP_PKEY_missing_parameters(ktmp))
+ break;
+ else
+ {
+ EVP_PKEY_free(ktmp);
+ ktmp=NULL;
+ }
+ }
+ if (ktmp == NULL)
+ {
+ X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
+ return 0;
+ }
+
+ /* first, populate the other certs */
+ for (j=i-1; j >= 0; j--)
+ {
+ ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
+ EVP_PKEY_copy_parameters(ktmp2,ktmp);
+ EVP_PKEY_free(ktmp2);
+ }
+
+ if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
+ EVP_PKEY_free(ktmp);
+ return 1;
+ }
+
+EXPORT_C int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+ CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+ {
+ /* This function is (usually) called only once, by
+ * SSL_get_ex_data_X509_STORE_CTX_idx (ssl/ssl_cert.c). */
+ return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509_STORE_CTX, argl, argp,
+ new_func, dup_func, free_func);
+ }
+
+EXPORT_C int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
+ {
+ return CRYPTO_set_ex_data(&ctx->ex_data,idx,data);
+ }
+
+EXPORT_C void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
+ {
+ return CRYPTO_get_ex_data(&ctx->ex_data,idx);
+ }
+
+EXPORT_C int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
+ {
+ return ctx->error;
+ }
+
+EXPORT_C void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
+ {
+ ctx->error=err;
+ }
+
+EXPORT_C int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
+ {
+ return ctx->error_depth;
+ }
+
+EXPORT_C X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
+ {
+ return ctx->current_cert;
+ }
+
+EXPORT_C STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
+ {
+ return ctx->chain;
+ }
+
+EXPORT_C STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
+ {
+ int i;
+ X509 *x;
+ STACK_OF(X509) *chain;
+ if (!ctx->chain || !(chain = sk_X509_dup(ctx->chain))) return NULL;
+ for (i = 0; i < sk_X509_num(chain); i++)
+ {
+ x = sk_X509_value(chain, i);
+ CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
+ }
+ return chain;
+ }
+
+EXPORT_C void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
+ {
+ ctx->cert=x;
+ }
+
+EXPORT_C void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
+ {
+ ctx->untrusted=sk;
+ }
+
+EXPORT_C void X509_STORE_CTX_set0_crls(X509_STORE_CTX *ctx, STACK_OF(X509_CRL) *sk)
+ {
+ ctx->crls=sk;
+ }
+
+EXPORT_C int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
+ {
+ return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
+ }
+
+EXPORT_C int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
+ {
+ return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
+ }
+
+/* This function is used to set the X509_STORE_CTX purpose and trust
+ * values. This is intended to be used when another structure has its
+ * own trust and purpose values which (if set) will be inherited by
+ * the ctx. If they aren't set then we will usually have a default
+ * purpose in mind which should then be used to set the trust value.
+ * An example of this is SSL use: an SSL structure will have its own
+ * purpose and trust settings which the application can set: if they
+ * aren't set then we use the default of SSL client/server.
+ */
+
+EXPORT_C int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
+ int purpose, int trust)
+{
+ int idx;
+ /* If purpose not set use default */
+ if (!purpose) purpose = def_purpose;
+ /* If we have a purpose then check it is valid */
+ if (purpose)
+ {
+ X509_PURPOSE *ptmp;
+ idx = X509_PURPOSE_get_by_id(purpose);
+ if (idx == -1)
+ {
+ X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
+ X509_R_UNKNOWN_PURPOSE_ID);
+ return 0;
+ }
+ ptmp = X509_PURPOSE_get0(idx);
+ if (ptmp->trust == X509_TRUST_DEFAULT)
+ {
+ idx = X509_PURPOSE_get_by_id(def_purpose);
+ if (idx == -1)
+ {
+ X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
+ X509_R_UNKNOWN_PURPOSE_ID);
+ return 0;
+ }
+ ptmp = X509_PURPOSE_get0(idx);
+ }
+ /* If trust not set then get from purpose default */
+ if (!trust) trust = ptmp->trust;
+ }
+ if (trust)
+ {
+ idx = X509_TRUST_get_by_id(trust);
+ if (idx == -1)
+ {
+ X509err(X509_F_X509_STORE_CTX_PURPOSE_INHERIT,
+ X509_R_UNKNOWN_TRUST_ID);
+ return 0;
+ }
+ }
+
+ if (purpose && !ctx->param->purpose) ctx->param->purpose = purpose;
+ if (trust && !ctx->param->trust) ctx->param->trust = trust;
+ return 1;
+}
+
+EXPORT_C X509_STORE_CTX *X509_STORE_CTX_new(void)
+{
+ X509_STORE_CTX *ctx;
+ ctx = (X509_STORE_CTX *)OPENSSL_malloc(sizeof(X509_STORE_CTX));
+ if (!ctx)
+ {
+ X509err(X509_F_X509_STORE_CTX_NEW,ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ memset(ctx, 0, sizeof(X509_STORE_CTX));
+ return ctx;
+}
+
+EXPORT_C void X509_STORE_CTX_free(X509_STORE_CTX *ctx)
+{
+ X509_STORE_CTX_cleanup(ctx);
+ OPENSSL_free(ctx);
+}
+
+EXPORT_C int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store, X509 *x509,
+ STACK_OF(X509) *chain)
+ {
+ int ret = 1;
+ ctx->ctx=store;
+ ctx->current_method=0;
+ ctx->cert=x509;
+ ctx->untrusted=chain;
+ ctx->crls = NULL;
+ ctx->last_untrusted=0;
+ ctx->other_ctx=NULL;
+ ctx->valid=0;
+ ctx->chain=NULL;
+ ctx->error=0;
+ ctx->explicit_policy=0;
+ ctx->error_depth=0;
+ ctx->current_cert=NULL;
+ ctx->current_issuer=NULL;
+ ctx->tree = NULL;
+
+ ctx->param = X509_VERIFY_PARAM_new();
+
+ if (!ctx->param)
+ {
+ X509err(X509_F_X509_STORE_CTX_INIT,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ /* Inherit callbacks and flags from X509_STORE if not set
+ * use defaults.
+ */
+
+
+ if (store)
+ ret = X509_VERIFY_PARAM_inherit(ctx->param, store->param);
+ else
+ ctx->param->flags |= X509_VP_FLAG_DEFAULT|X509_VP_FLAG_ONCE;
+
+ if (store)
+ {
+ ctx->verify_cb = store->verify_cb;
+ ctx->cleanup = store->cleanup;
+ }
+ else
+ ctx->cleanup = 0;
+
+ if (ret)
+ ret = X509_VERIFY_PARAM_inherit(ctx->param,
+ X509_VERIFY_PARAM_lookup("default"));
+
+ if (ret == 0)
+ {
+ X509err(X509_F_X509_STORE_CTX_INIT,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ if (store && store->check_issued)
+ ctx->check_issued = store->check_issued;
+ else
+ ctx->check_issued = check_issued;
+
+ if (store && store->get_issuer)
+ ctx->get_issuer = store->get_issuer;
+ else
+ ctx->get_issuer = X509_STORE_CTX_get1_issuer;
+
+ if (store && store->verify_cb)
+ ctx->verify_cb = store->verify_cb;
+ else
+ ctx->verify_cb = null_callback;
+
+ if (store && store->verify)
+ ctx->verify = store->verify;
+ else
+ ctx->verify = internal_verify;
+
+ if (store && store->check_revocation)
+ ctx->check_revocation = store->check_revocation;
+ else
+ ctx->check_revocation = check_revocation;
+
+ if (store && store->get_crl)
+ ctx->get_crl = store->get_crl;
+ else
+ ctx->get_crl = get_crl;
+
+ if (store && store->check_crl)
+ ctx->check_crl = store->check_crl;
+ else
+ ctx->check_crl = check_crl;
+
+ if (store && store->cert_crl)
+ ctx->cert_crl = store->cert_crl;
+ else
+ ctx->cert_crl = cert_crl;
+
+ ctx->check_policy = check_policy;
+
+
+ /* This memset() can't make any sense anyway, so it's removed. As
+ * X509_STORE_CTX_cleanup does a proper "free" on the ex_data, we put a
+ * corresponding "new" here and remove this bogus initialisation. */
+ /* memset(&(ctx->ex_data),0,sizeof(CRYPTO_EX_DATA)); */
+ if(!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE_CTX, ctx,
+ &(ctx->ex_data)))
+ {
+ OPENSSL_free(ctx);
+ X509err(X509_F_X509_STORE_CTX_INIT,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ return 1;
+ }
+
+/* Set alternative lookup method: just a STACK of trusted certificates.
+ * This avoids X509_STORE nastiness where it isn't needed.
+ */
+
+EXPORT_C void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
+{
+ ctx->other_ctx = sk;
+ ctx->get_issuer = get_issuer_sk;
+}
+
+EXPORT_C void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx)
+ {
+ if (ctx->cleanup) ctx->cleanup(ctx);
+ if (ctx->param != NULL)
+ {
+ X509_VERIFY_PARAM_free(ctx->param);
+ ctx->param=NULL;
+ }
+ if (ctx->tree != NULL)
+ {
+ X509_policy_tree_free(ctx->tree);
+ ctx->tree=NULL;
+ }
+ if (ctx->chain != NULL)
+ {
+ sk_X509_pop_free(ctx->chain,X509_free);
+ ctx->chain=NULL;
+ }
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE_CTX, ctx, &(ctx->ex_data));
+ memset(&ctx->ex_data,0,sizeof(CRYPTO_EX_DATA));
+ }
+
+EXPORT_C void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth)
+ {
+ X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+ }
+
+EXPORT_C void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags)
+ {
+ X509_VERIFY_PARAM_set_flags(ctx->param, flags);
+ }
+
+EXPORT_C void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags, time_t t)
+ {
+ X509_VERIFY_PARAM_set_time(ctx->param, t);
+ }
+
+EXPORT_C void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
+ int (*verify_cb)(int, X509_STORE_CTX *))
+ {
+ ctx->verify_cb=verify_cb;
+ }
+
+EXPORT_C X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx)
+ {
+ return ctx->tree;
+ }
+
+EXPORT_C int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx)
+ {
+ return ctx->explicit_policy;
+ }
+
+EXPORT_C int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name)
+ {
+ const X509_VERIFY_PARAM *param;
+ param = X509_VERIFY_PARAM_lookup(name);
+ if (!param)
+ return 0;
+ return X509_VERIFY_PARAM_inherit(ctx->param, param);
+ }
+
+EXPORT_C X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx)
+ {
+ return ctx->param;
+ }
+
+EXPORT_C void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param)
+ {
+ if (ctx->param)
+ X509_VERIFY_PARAM_free(ctx->param);
+ ctx->param = param;
+ }
+
+IMPLEMENT_STACK_OF(X509)
+IMPLEMENT_ASN1_SET_OF(X509)
+
+IMPLEMENT_STACK_OF(X509_NAME)
+
+IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
+IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)