#include <openssl/x509v3.h>
#include <openssl/objects.h>
+/* CRL score values */
+
+/* No unhandled critical extensions */
+
+#define CRL_SCORE_NOCRITICAL 0x100
+
+/* certificate is within CRL scope */
+
+#define CRL_SCORE_SCOPE 0x080
+
+/* CRL times valid */
+
+#define CRL_SCORE_TIME 0x040
+
+/* Issuer name matches certificate */
+
+#define CRL_SCORE_ISSUER_NAME 0x020
+
+/* If this score or above CRL is probably valid */
+
+#define CRL_SCORE_VALID (CRL_SCORE_NOCRITICAL|CRL_SCORE_TIME|CRL_SCORE_SCOPE)
+
+/* CRL issuer is certificate issuer */
+
+#define CRL_SCORE_ISSUER_CERT 0x018
+
+/* CRL issuer is on certificate path */
+
+#define CRL_SCORE_SAME_PATH 0x008
+
+/* CRL issuer matches CRL AKID */
+
+#define CRL_SCORE_AKID 0x004
+
+/* Have a delta CRL with valid times */
+
+#define CRL_SCORE_TIME_DELTA 0x002
+
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_revocation(X509_STORE_CTX *ctx);
static int check_cert(X509_STORE_CTX *ctx);
static int check_policy(X509_STORE_CTX *ctx);
-static int crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl, X509 **pissuer);
-static int idp_check_scope(X509 *x, X509_CRL *crl);
+
+static int get_crl_score(X509_STORE_CTX *ctx, X509 **pissuer,
+ unsigned int *preasons,
+ X509_CRL *crl, X509 *x);
+static int get_crl_delta(X509_STORE_CTX *ctx,
+ X509_CRL **pcrl, X509_CRL **pdcrl, X509 *x);
+static void get_delta_sk(X509_STORE_CTX *ctx, X509_CRL **dcrl, int *pcrl_score,
+ X509_CRL *base, STACK_OF(X509_CRL) *crls);
+static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
+ X509 **pissuer, int *pcrl_score);
+static int crl_crldp_check(X509 *x, X509_CRL *crl, int crl_score,
+ unsigned int *preasons);
static int check_crl_path(X509_STORE_CTX *ctx, X509 *x);
static int check_crl_chain(X509_STORE_CTX *ctx,
STACK_OF(X509) *cert_path,
STACK_OF(X509) *crl_path);
+
static int internal_verify(X509_STORE_CTX *ctx);
const char X509_version[]="X.509" OPENSSL_VERSION_PTEXT;
static int check_cert(X509_STORE_CTX *ctx)
{
- X509_CRL *crl = NULL;
+ X509_CRL *crl = NULL, *dcrl = NULL;
X509 *x;
int ok, cnum;
cnum = ctx->error_depth;
x = sk_X509_value(ctx->chain, cnum);
ctx->current_cert = x;
ctx->current_issuer = NULL;
- /* 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->current_reasons = 0;
+ while (ctx->current_reasons != CRLDP_ALL_REASONS)
{
- ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
- ok = ctx->verify_cb(0, ctx);
- goto err;
+ /* Try to retrieve relevant CRL */
+ if (ctx->get_crl)
+ ok = ctx->get_crl(ctx, &crl, x);
+ else
+ ok = get_crl_delta(ctx, &crl, &dcrl, 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;
+
+ if (dcrl)
+ {
+ ok = ctx->check_crl(ctx, dcrl);
+ if (!ok)
+ goto err;
+ ok = ctx->cert_crl(ctx, dcrl, x);
+ if (!ok)
+ goto err;
+ }
+ else
+ ok = 1;
+
+ /* Don't look in full CRL if delta reason is removefromCRL */
+ if (ok != 2)
+ {
+ ok = ctx->cert_crl(ctx, crl, x);
+ if (!ok)
+ goto err;
+ }
+
+ X509_CRL_free(crl);
+ X509_CRL_free(dcrl);
+ crl = NULL;
+ dcrl = NULL;
}
- 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);
+ X509_CRL_free(dcrl);
+
+ ctx->current_crl = NULL;
return ok;
}
{
time_t *ptime;
int i;
- ctx->current_crl = crl;
+ if (notify)
+ ctx->current_crl = crl;
if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
ptime = &ctx->param->check_time;
else
i=X509_cmp_time(X509_CRL_get_lastUpdate(crl), ptime);
if (i == 0)
{
+ if (!notify)
+ return 0;
ctx->error=X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD;
- if (!notify || !ctx->verify_cb(0, ctx))
+ if (!ctx->verify_cb(0, ctx))
return 0;
}
if (i > 0)
{
+ if (!notify)
+ return 0;
ctx->error=X509_V_ERR_CRL_NOT_YET_VALID;
- if (!notify || !ctx->verify_cb(0, ctx))
+ if (!ctx->verify_cb(0, ctx))
return 0;
}
if (i == 0)
{
+ if (!notify)
+ return 0;
ctx->error=X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD;
- if (!notify || !ctx->verify_cb(0, ctx))
+ if (!ctx->verify_cb(0, ctx))
return 0;
}
-
- if (i < 0)
+ /* Ignore expiry of base CRL is delta is valid */
+ if ((i < 0) && !(ctx->current_crl_score & CRL_SCORE_TIME_DELTA))
{
+ if (!notify)
+ return 0;
ctx->error=X509_V_ERR_CRL_HAS_EXPIRED;
- if (!notify || !ctx->verify_cb(0, ctx))
+ if (!ctx->verify_cb(0, ctx))
return 0;
}
}
- ctx->current_crl = NULL;
+ if (notify)
+ ctx->current_crl = NULL;
return 1;
}
-/* Based on a set of possible CRLs decide which one is best suited
- * to handle the current certificate. This is determined by a number
- * of criteria. If any of the "must" criteria is not satisfied then
- * the candidate CRL is rejected. If all "must" and all "should" are
- * satisfied the CRL is accepted. If no CRL satisfies all criteria then
- * a "best CRL" is used to provide some meaningful error information.
- *
- * CRL issuer name must match "nm" if not NULL.
- * If IDP is present:
- * a. it must be consistent.
- * b. onlyuser, onlyCA, onlyAA should match certificate being checked.
- * c. indirectCRL must be FALSE.
- * d. onlysomereason must be absent.
- * e. if name present a DP in certificate CRLDP must match.
- * If AKID present it should match certificate AKID.
- * Check time should fall between lastUpdate and nextUpdate.
- */
-
-/* IDP name field matches CRLDP or IDP name not present */
-#define CRL_SCORE_SCOPE 4
-/* AKID present and matches cert, or AKID not present */
-#define CRL_SCORE_AKID 2
-/* times OK */
-#define CRL_SCORE_TIME 1
-
-#define CRL_SCORE_ALL 7
-
-/* IDP flags which cause a CRL to be rejected */
-
-#define IDP_REJECT (IDP_INVALID|IDP_INDIRECT|IDP_REASONS)
-
-static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl,
- X509_NAME *nm, STACK_OF(X509_CRL) *crls)
+static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl, X509_CRL **pdcrl,
+ X509 **pissuer, int *pscore, unsigned int *preasons,
+ STACK_OF(X509_CRL) *crls)
{
- int i, crl_score, best_score = -1;
+ int i, crl_score, best_score = *pscore;
+ unsigned int reasons, best_reasons = 0;
+ X509 *x = ctx->current_cert;
X509_CRL *crl, *best_crl = NULL;
- X509 *crl_issuer, *best_crl_issuer = NULL;
+ X509 *crl_issuer = NULL, *best_crl_issuer = NULL;
+
for (i = 0; i < sk_X509_CRL_num(crls); i++)
{
- crl_score = 0;
- crl_issuer = NULL;
crl = sk_X509_CRL_value(crls, i);
- if (nm && X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
- continue;
- if (check_crl_time(ctx, crl, 0))
- crl_score |= CRL_SCORE_TIME;
-
- if (crl->idp_flags & IDP_PRESENT)
- {
- if (crl->idp_flags & IDP_REJECT)
- continue;
- if (idp_check_scope(ctx->current_cert, crl))
- crl_score |= CRL_SCORE_SCOPE;
- }
- else
- crl_score |= CRL_SCORE_SCOPE;
-
- if (crl_akid_check(ctx, crl, &crl_issuer))
- crl_score |= CRL_SCORE_AKID;
- /* If CRL matches criteria and issuer is not different use it */
- if (crl_score == CRL_SCORE_ALL && !crl_issuer)
- {
- *pcrl = crl;
- CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
- return 1;
- }
+ reasons = *preasons;
+ crl_score = get_crl_score(ctx, &crl_issuer, &reasons, crl, x);
if (crl_score > best_score)
{
best_crl = crl;
best_crl_issuer = crl_issuer;
best_score = crl_score;
+ best_reasons = reasons;
}
}
+
if (best_crl)
{
+ if (*pcrl)
+ X509_CRL_free(*pcrl);
*pcrl = best_crl;
- ctx->current_issuer = best_crl_issuer;
- CRYPTO_add(&best_crl->references, 1, CRYPTO_LOCK_X509);
+ *pissuer = best_crl_issuer;
+ *pscore = best_score;
+ *preasons = best_reasons;
+ CRYPTO_add(&best_crl->references, 1, CRYPTO_LOCK_X509_CRL);
+ if (*pdcrl)
+ {
+ X509_CRL_free(*pdcrl);
+ *pdcrl = NULL;
+ }
+ get_delta_sk(ctx, pdcrl, pscore, best_crl, crls);
}
+ if (best_score >= CRL_SCORE_VALID)
+ return 1;
+
return 0;
}
-static int crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl, X509 **pissuer)
+/* Compare two CRL extensions for delta checking purposes. They should be
+ * both present or both absent. If both present all fields must be identical.
+ */
+
+static int crl_extension_match(X509_CRL *a, X509_CRL *b, int nid)
{
- X509 *crl_issuer;
- int cidx = ctx->error_depth;
+ ASN1_OCTET_STRING *exta, *extb;
int i;
- if (!crl->akid)
+ i = X509_CRL_get_ext_by_NID(a, nid, 0);
+ if (i >= 0)
+ {
+ /* Can't have multiple occurrences */
+ if (X509_CRL_get_ext_by_NID(a, nid, i) != -1)
+ return 0;
+ exta = X509_EXTENSION_get_data(X509_CRL_get_ext(a, i));
+ }
+ else
+ exta = NULL;
+
+ i = X509_CRL_get_ext_by_NID(b, nid, 0);
+
+ if (i >= 0)
+ {
+
+ if (X509_CRL_get_ext_by_NID(b, nid, i) != -1)
+ return 0;
+ extb = X509_EXTENSION_get_data(X509_CRL_get_ext(b, i));
+ }
+ else
+ extb = NULL;
+
+ if (!exta && !extb)
return 1;
+
+ if (!exta || !extb)
+ return 0;
+
+
+ if (ASN1_OCTET_STRING_cmp(exta, extb))
+ return 0;
+
+ return 1;
+ }
+
+/* See if a base and delta are compatible */
+
+static int check_delta_base(X509_CRL *delta, X509_CRL *base)
+ {
+ /* Delta CRL must be a delta */
+ if (!delta->base_crl_number)
+ return 0;
+ /* Base must have a CRL number */
+ if (!base->crl_number)
+ return 0;
+ /* Issuer names must match */
+ if (X509_NAME_cmp(X509_CRL_get_issuer(base),
+ X509_CRL_get_issuer(delta)))
+ return 0;
+ /* AKID and IDP must match */
+ if (!crl_extension_match(delta, base, NID_authority_key_identifier))
+ return 0;
+ if (!crl_extension_match(delta, base, NID_issuing_distribution_point))
+ return 0;
+ /* Delta CRL base number must not exceed Full CRL number. */
+ if (ASN1_INTEGER_cmp(delta->base_crl_number, base->crl_number) > 0)
+ return 0;
+ /* Delta CRL number must exceed full CRL number */
+ if (ASN1_INTEGER_cmp(delta->crl_number, base->crl_number) > 0)
+ return 1;
+ return 0;
+ }
+
+/* For a given base CRL find a delta... maybe extend to delta scoring
+ * or retrieve a chain of deltas...
+ */
+
+static void get_delta_sk(X509_STORE_CTX *ctx, X509_CRL **dcrl, int *pscore,
+ X509_CRL *base, STACK_OF(X509_CRL) *crls)
+ {
+ X509_CRL *delta;
+ int i;
+ if (!(ctx->param->flags & X509_V_FLAG_USE_DELTAS))
+ return;
+ if (!((ctx->current_cert->ex_flags | base->flags) & EXFLAG_FRESHEST))
+ return;
+ for (i = 0; i < sk_X509_CRL_num(crls); i++)
+ {
+ delta = sk_X509_CRL_value(crls, i);
+ if (check_delta_base(delta, base))
+ {
+ if (check_crl_time(ctx, delta, 0))
+ *pscore |= CRL_SCORE_TIME_DELTA;
+ CRYPTO_add(&delta->references, 1, CRYPTO_LOCK_X509_CRL);
+ *dcrl = delta;
+ return;
+ }
+ }
+ *dcrl = NULL;
+ }
+
+/* For a given CRL return how suitable it is for the supplied certificate 'x'.
+ * The return value is a mask of several criteria.
+ * If the issuer is not the certificate issuer this is returned in *pissuer.
+ * The reasons mask is also used to determine if the CRL is suitable: if
+ * no new reasons the CRL is rejected, otherwise reasons is updated.
+ */
+
+static int get_crl_score(X509_STORE_CTX *ctx, X509 **pissuer,
+ unsigned int *preasons,
+ X509_CRL *crl, X509 *x)
+ {
+
+ int crl_score = 0;
+ unsigned int tmp_reasons = *preasons, crl_reasons;
+
+ /* First see if we can reject CRL straight away */
+
+ /* Invalid IDP cannot be processed */
+ if (crl->idp_flags & IDP_INVALID)
+ return 0;
+ /* Reason codes or indirect CRLs need extended CRL support */
+ if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT))
+ {
+ if (crl->idp_flags & (IDP_INDIRECT | IDP_REASONS))
+ return 0;
+ }
+ else if (crl->idp_flags & IDP_REASONS)
+ {
+ /* If no new reasons reject */
+ if (!(crl->idp_reasons & ~tmp_reasons))
+ return 0;
+ }
+ /* Don't process deltas at this stage */
+ else if (crl->base_crl_number)
+ return 0;
+ /* If issuer name doesn't match certificate need indirect CRL */
+ if (X509_NAME_cmp(X509_get_issuer_name(x), X509_CRL_get_issuer(crl)))
+ {
+ if (!(crl->idp_flags & IDP_INDIRECT))
+ return 0;
+ }
+ else
+ crl_score |= CRL_SCORE_ISSUER_NAME;
+
+ if (!(crl->flags & EXFLAG_CRITICAL))
+ crl_score |= CRL_SCORE_NOCRITICAL;
+
+ /* Check expiry */
+ if (check_crl_time(ctx, crl, 0))
+ crl_score |= CRL_SCORE_TIME;
+
+ /* Check authority key ID and locate certificate issuer */
+ crl_akid_check(ctx, crl, pissuer, &crl_score);
+
+ /* If we can't locate certificate issuer at this point forget it */
+
+ if (!(crl_score & CRL_SCORE_AKID))
+ return 0;
+
+ /* Check cert for matching CRL distribution points */
+
+ if (crl_crldp_check(x, crl, crl_score, &crl_reasons))
+ {
+ /* If no new reasons reject */
+ if (!(crl_reasons & ~tmp_reasons))
+ return 0;
+ tmp_reasons |= crl_reasons;
+ crl_score |= CRL_SCORE_SCOPE;
+ }
+
+ *preasons = tmp_reasons;
+
+ return crl_score;
+
+ }
+
+static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
+ X509 **pissuer, int *pcrl_score)
+ {
+ X509 *crl_issuer = NULL;
+ X509_NAME *cnm = X509_CRL_get_issuer(crl);
+ int cidx = ctx->error_depth;
+ int i;
+
if (cidx != sk_X509_num(ctx->chain) - 1)
cidx++;
+
crl_issuer = sk_X509_value(ctx->chain, cidx);
+
if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK)
- return 1;
- /* If crl_issuer is self issued we may get a match further along the
- * chain.
- */
- if (crl_issuer->ex_flags & EXFLAG_SI)
{
- for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++)
+ if (*pcrl_score & CRL_SCORE_ISSUER_NAME)
{
- crl_issuer = sk_X509_value(ctx->chain, cidx);
- if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK)
- {
- *pissuer = crl_issuer;
- return 1;
- }
- if (!(crl_issuer->ex_flags & EXFLAG_SI))
- break;
+ *pcrl_score |= CRL_SCORE_AKID|CRL_SCORE_ISSUER_CERT;
+ *pissuer = crl_issuer;
+ return;
}
}
+ for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++)
+ {
+ crl_issuer = sk_X509_value(ctx->chain, cidx);
+ if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+ continue;
+ if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK)
+ {
+ *pcrl_score |= CRL_SCORE_AKID|CRL_SCORE_SAME_PATH;
+ *pissuer = crl_issuer;
+ return;
+ }
+ }
/* Anything else needs extended CRL support */
if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT))
- return 0;
+ return;
/* Otherwise the CRL issuer is not on the path. Look for it in the
* set of untrusted certificates.
*/
-
for (i = 0; i < sk_X509_num(ctx->untrusted); i++)
{
crl_issuer = sk_X509_value(ctx->untrusted, i);
- if (X509_NAME_cmp(X509_get_subject_name(crl_issuer),
- X509_CRL_get_issuer(crl)))
+ if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
continue;
if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK)
{
- if (check_crl_path(ctx, crl_issuer))
- {
- *pissuer = crl_issuer;
- return 1;
- }
+ *pissuer = crl_issuer;
+ *pcrl_score |= CRL_SCORE_AKID;
+ return;
}
}
-
- return 0;
}
/* Check the path of a CRL issuer certificate. This creates a new
{
X509_STORE_CTX crl_ctx;
int ret;
+ /* Don't allow recursive CRL path validation */
if (ctx->parent)
return 0;
if (!X509_STORE_CTX_init(&crl_ctx, ctx->ctx, x, ctx->untrusted))
/* Verify CRL issuer */
ret = X509_verify_cert(&crl_ctx);
- /* Maybe send path check result back to parent? */
- if (!ret)
+ if (ret <= 0)
goto err;
/* Check chain is acceptable */
ret = check_crl_chain(ctx, ctx->chain, crl_ctx.chain);
-
err:
X509_STORE_CTX_cleanup(&crl_ctx);
return ret;
* 1. Both are relative names and compare X509_NAME types.
* 2. One full, one relative. Compare X509_NAME to GENERAL_NAMES.
* 3. Both are full names and compare two GENERAL_NAMES.
+ * 4. One is NULL: automatic match.
*/
GENERAL_NAMES *gens = NULL;
GENERAL_NAME *gena, *genb;
int i, j;
+ if (!a || !b)
+ return 1;
if (a->type == 1)
{
if (!a->dpname)
}
-/* Check IDP name matches at least one CRLDP name */
+static int crldp_check_crlissuer(DIST_POINT *dp, X509_CRL *crl, int crl_score)
+ {
+ int i;
+ X509_NAME *nm = X509_CRL_get_issuer(crl);
+ /* If no CRLissuer return is successful iff don't need a match */
+ if (!dp->CRLissuer)
+ return !!(crl_score & CRL_SCORE_ISSUER_NAME);
+ for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++)
+ {
+ GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
+ if (gen->type != GEN_DIRNAME)
+ continue;
+ if (!X509_NAME_cmp(gen->d.directoryName, nm))
+ return 1;
+ }
+ return 0;
+ }
+
+/* Check CRLDP and IDP */
-static int idp_check_scope(X509 *x, X509_CRL *crl)
+static int crl_crldp_check(X509 *x, X509_CRL *crl, int crl_score,
+ unsigned int *preasons)
{
int i;
if (crl->idp_flags & IDP_ONLYATTR)
if (crl->idp_flags & IDP_ONLYCA)
return 0;
}
- if (!crl->idp->distpoint)
- return 1;
- if (!x->crldp)
- return 0;
+ *preasons = crl->idp_reasons;
for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++)
{
DIST_POINT *dp = sk_DIST_POINT_value(x->crldp, i);
- /* We don't handle these at present */
- if (dp->reasons || dp->CRLissuer)
- continue;
- if (idp_check_dp(dp->distpoint, crl->idp->distpoint))
- return 1;
+ if (crldp_check_crlissuer(dp, crl, crl_score))
+ {
+ if (!crl->idp ||
+ idp_check_dp(dp->distpoint, crl->idp->distpoint))
+ {
+ *preasons &= dp->dp_reasons;
+ return 1;
+ }
+ }
}
+ if ((!crl->idp || !crl->idp->distpoint) && (crl_score & CRL_SCORE_ISSUER_NAME))
+ return 1;
return 0;
}
-/* Retrieve CRL corresponding to current certificate. Currently only
- * one CRL is retrieved. Multiple CRLs may be needed if we handle
- * CRLs partitioned on reason code later.
+/* Retrieve CRL corresponding to current certificate.
+ * If deltas enabled try to find a delta CRL too
*/
-static int get_crl(X509_STORE_CTX *ctx, X509_CRL **pcrl, X509 *x)
+static int get_crl_delta(X509_STORE_CTX *ctx,
+ X509_CRL **pcrl, X509_CRL **pdcrl, X509 *x)
{
int ok;
- X509_CRL *crl = NULL;
+ X509 *issuer = NULL;
+ int crl_score = 0;
+ unsigned int reasons;
+ X509_CRL *crl = NULL, *dcrl = NULL;
STACK_OF(X509_CRL) *skcrl;
- X509_NAME *nm;
- nm = X509_get_issuer_name(x);
- ok = get_crl_sk(ctx, &crl, nm, ctx->crls);
+ X509_NAME *nm = X509_get_issuer_name(x);
+ reasons = ctx->current_reasons;
+ ok = get_crl_sk(ctx, &crl, &dcrl,
+ &issuer, &crl_score, &reasons, ctx->crls);
+
if (ok)
- {
- *pcrl = crl;
- return 1;
- }
+ goto done;
/* Lookup CRLs from store */
skcrl = ctx->lookup_crls(ctx, nm);
/* If no CRLs found and a near match from get_crl_sk use that */
- if (!skcrl)
- {
- if (crl)
- {
- *pcrl = crl;
- return 1;
- }
- return 0;
- }
+ if (!skcrl && crl)
+ goto done;
- get_crl_sk(ctx, &crl, NULL, skcrl);
+ get_crl_sk(ctx, &crl, &dcrl, &issuer, &crl_score, &reasons, skcrl);
sk_X509_CRL_pop_free(skcrl, X509_CRL_free);
+ done:
+
/* If we got any kind of CRL use it and return success */
if (crl)
{
+ ctx->current_issuer = issuer;
+ ctx->current_crl_score = crl_score;
+ ctx->current_reasons = reasons;
*pcrl = crl;
+ *pdcrl = dcrl;
return 1;
}
/* if we have an alternative CRL issuer cert use that */
if (ctx->current_issuer)
issuer = ctx->current_issuer;
+
/* Else find CRL issuer: if not last certificate then issuer
* is next certificate in chain.
*/
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;
- }
-
- if (crl->idp_flags & IDP_PRESENT)
+ /* Skip most tests for deltas because they have already
+ * been done
+ */
+ if (!crl->base_crl_number)
{
- if (crl->idp_flags & IDP_INVALID)
+ /* Check for cRLSign bit if keyUsage present */
+ if ((issuer->ex_flags & EXFLAG_KUSAGE) &&
+ !(issuer->ex_kusage & KU_CRL_SIGN))
{
- ctx->error = X509_V_ERR_INVALID_EXTENSION;
+ ctx->error = X509_V_ERR_KEYUSAGE_NO_CRL_SIGN;
ok = ctx->verify_cb(0, ctx);
if(!ok) goto err;
}
- if (crl->idp_flags & (IDP_REASONS|IDP_INDIRECT))
+
+ if (!(ctx->current_crl_score & CRL_SCORE_SCOPE))
{
- ctx->error = X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE;
+ ctx->error = X509_V_ERR_DIFFERENT_CRL_SCOPE;
ok = ctx->verify_cb(0, ctx);
if(!ok) goto err;
}
- if (!idp_check_scope(ctx->current_cert, crl))
+
+ if (!(ctx->current_crl_score & CRL_SCORE_SAME_PATH))
{
- ctx->error = X509_V_ERR_DIFFERENT_CRL_SCOPE;
+ if (!check_crl_path(ctx, ctx->current_issuer))
+ {
+ ctx->error = X509_V_ERR_CRL_PATH_VALIDATION_ERROR;
+ ok = ctx->verify_cb(0, ctx);
+ if(!ok) goto err;
+ }
+ }
+
+ if (crl->idp_flags & IDP_INVALID)
+ {
+ ctx->error = X509_V_ERR_INVALID_EXTENSION;
ok = ctx->verify_cb(0, ctx);
if(!ok) goto err;
}
+
+
+ }
+
+ if (!(ctx->current_crl_score & CRL_SCORE_TIME))
+ {
+ ok = check_crl_time(ctx, crl, 1);
+ if (!ok)
+ goto err;
}
/* Attempt to get issuer certificate public key */
}
}
- ok = check_crl_time(ctx, crl, 1);
- if (!ok)
- goto err;
-
ok = 1;
err:
static int cert_crl(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x)
{
int ok;
- /* Look for serial number of certificate in CRL
- * If found assume revoked: want something cleverer than
- * this to handle entry extensions in V2 CRLs.
+ X509_REVOKED *rev;
+ /* The rules changed for this... previously if a CRL contained
+ * unhandled critical extensions it could still be used to indicate
+ * a certificate was revoked. This has since been changed since
+ * critical extension can change the meaning of CRL entries.
*/
- if (X509_CRL_get0_by_serial(crl, NULL, X509_get_serialNumber(x)) > 0)
- {
- ctx->error = X509_V_ERR_CERT_REVOKED;
- ok = ctx->verify_cb(0, ctx);
- if (!ok)
- return 0;
- }
-
if (crl->flags & EXFLAG_CRITICAL)
{
if (ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
if(!ok)
return 0;
}
+ /* Look for serial number of certificate in CRL
+ * If found make sure reason is not removeFromCRL.
+ */
+ if (X509_CRL_get0_by_cert(crl, &rev, x))
+ {
+ if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
+ return 2;
+ ctx->error = X509_V_ERR_CERT_REVOKED;
+ ok = ctx->verify_cb(0, ctx);
+ if (!ok)
+ return 0;
+ }
return 1;
}
while (n >= 0)
{
ctx->error_depth=n;
- if (!xs->valid)
+
+ /* Skip signature check for self signed certificates. It
+ * doesn't add any security and just wastes time.
+ */
+ if (!xs->valid && xs != xi)
{
if ((pkey=X509_get_pubkey(xi)) == NULL)
{
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;
return X509_time_adj(s, adj, NULL);
}
-ASN1_TIME *X509_time_adj(ASN1_TIME *s, long adj, time_t *in_tm)
+ASN1_TIME *X509_time_adj(ASN1_TIME *s, long offset_sec, time_t *in_tm)
+ {
+ return X509_time_adj_ex(s, 0, offset_sec, in_tm);
+ }
+
+ASN1_TIME *X509_time_adj_ex(ASN1_TIME *s,
+ int offset_day, long offset_sec, 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);
+ if (type == V_ASN1_UTCTIME)
+ return ASN1_UTCTIME_adj(s,t, offset_day, offset_sec);
+ if (type == V_ASN1_GENERALIZEDTIME)
+ return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
+ return ASN1_TIME_adj(s, t, offset_day, offset_sec);
}
int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
if (store && store->get_crl)
ctx->get_crl = store->get_crl;
else
- ctx->get_crl = get_crl;
+ ctx->get_crl = NULL;
if (store && store->check_crl)
ctx->check_crl = store->check_crl;
projects / openssl.git / blobdiff