Fix a failure to NULL a pointer freed on error.
[openssl.git] / crypto / asn1 / x_x509.c
index bc466ce0f6870f233a3e2dc6c42e3c55655127f2..36f6ff4362c7b1af3f282ad6b22fc37b6f37eb5c 100644 (file)
@@ -5,21 +5,21 @@
  * 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:
  *     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 
+ * 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
@@ -49,7 +49,7 @@
  * 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
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "evp.h"
-#include "asn1_mac.h"
+#include <openssl/evp.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
+        ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
+        ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
+        ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
+        ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
+        ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
+        ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
+        ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
+        ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
+        ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
+} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
+/* X509 top level structure needs a bit of customisation */
+
+extern void policy_cache_free(X509_POLICY_CACHE *cache);
+
+static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg)
+{
+    X509 *ret = (X509 *)*pval;
+
+    switch (operation) {
+
+    case ASN1_OP_NEW_POST:
+        ret->valid = 0;
+        ret->name = NULL;
+        ret->ex_flags = 0;
+        ret->ex_pathlen = -1;
+        ret->skid = NULL;
+        ret->akid = NULL;
+        ret->rfc3779_addr = NULL;
+        ret->rfc3779_asid = NULL;
+        ret->aux = NULL;
+        ret->crldp = NULL;
+        CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
+        break;
+
+    case ASN1_OP_D2I_POST:
+        if (ret->name != NULL)
+            OPENSSL_free(ret->name);
+        ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
+        break;
+
+    case ASN1_OP_FREE_POST:
+        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
+        X509_CERT_AUX_free(ret->aux);
+        ASN1_OCTET_STRING_free(ret->skid);
+        AUTHORITY_KEYID_free(ret->akid);
+        CRL_DIST_POINTS_free(ret->crldp);
+        policy_cache_free(ret->policy_cache);
+        GENERAL_NAMES_free(ret->altname);
+        NAME_CONSTRAINTS_free(ret->nc);
+        sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
+        ASIdentifiers_free(ret->rfc3779_asid);
+
+        if (ret->name != NULL)
+            OPENSSL_free(ret->name);
+        break;
+
+    }
+
+    return 1;
+
+}
+
+ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
+        ASN1_SIMPLE(X509, cert_info, X509_CINF),
+        ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509, X509)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509)
+
+int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+                          CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+{
+    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
+                                   new_func, dup_func, free_func);
+}
+
+int X509_set_ex_data(X509 *r, int idx, void *arg)
+{
+    return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
+}
+
+void *X509_get_ex_data(X509 *r, int idx)
+{
+    return (CRYPTO_get_ex_data(&r->ex_data, idx));
+}
 
 /*
- * ASN1err(ASN1_F_D2I_X509,ASN1_R_LENGTH_MISMATCH);
- * ASN1err(ASN1_F_X509_NEW,ASN1_R_BAD_GET_OBJECT);
+ * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
+ * extra info tagged on the end. Since these functions set how a certificate
+ * is trusted they should only be used when the certificate comes from a
+ * reliable source such as local storage.
  */
 
-static ASN1_METHOD meth={
-       (int (*)())  i2d_X509,
-       (char *(*)())d2i_X509,
-       (char *(*)())X509_new,
-       (void (*)()) X509_free};
-
-ASN1_METHOD *X509_asn1_meth()
-       {
-       return(&meth);
-       }
-
-int i2d_X509(a,pp)
-X509 *a;
-unsigned char **pp;
-       {
-       M_ASN1_I2D_vars(a);
-
-       M_ASN1_I2D_len(a->cert_info,    i2d_X509_CINF);
-       M_ASN1_I2D_len(a->sig_alg,      i2d_X509_ALGOR);
-       M_ASN1_I2D_len(a->signature,    i2d_ASN1_BIT_STRING);
-
-       M_ASN1_I2D_seq_total();
-
-       M_ASN1_I2D_put(a->cert_info,    i2d_X509_CINF);
-       M_ASN1_I2D_put(a->sig_alg,      i2d_X509_ALGOR);
-       M_ASN1_I2D_put(a->signature,    i2d_ASN1_BIT_STRING);
-
-       M_ASN1_I2D_finish();
-       }
-
-X509 *d2i_X509(a,pp,length)
-X509 **a;
-unsigned char **pp;
-long length;
-       {
-       M_ASN1_D2I_vars(a,X509 *,X509_new);
-
-       M_ASN1_D2I_Init();
-       M_ASN1_D2I_start_sequence();
-       M_ASN1_D2I_get(ret->cert_info,d2i_X509_CINF);
-       M_ASN1_D2I_get(ret->sig_alg,d2i_X509_ALGOR);
-       M_ASN1_D2I_get(ret->signature,d2i_ASN1_BIT_STRING);
-if (ret->name != NULL) Free(ret->name);
-ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0);
-
-       M_ASN1_D2I_Finish(a,X509_free,ASN1_F_D2I_X509);
-       }
-
-X509 *X509_new()
-       {
-       X509 *ret=NULL;
-
-       M_ASN1_New_Malloc(ret,X509);
-       ret->references=1;
-       ret->valid=0;
-       ret->name=NULL;
-       M_ASN1_New(ret->cert_info,X509_CINF_new);
-       M_ASN1_New(ret->sig_alg,X509_ALGOR_new);
-       M_ASN1_New(ret->signature,ASN1_BIT_STRING_new);
-       return(ret);
-       M_ASN1_New_Error(ASN1_F_X509_NEW);
-       }
-
-void X509_free(a)
-X509 *a;
-       {
-       int i;
-
-       if (a == NULL) return;
-
-       i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_X509);
-#ifdef REF_PRINT
-       REF_PRINT("X509",a);
-#endif
-       if (i > 0) return;
-#ifdef REF_CHECK
-       if (i < 0)
-               {
-               fprintf(stderr,"X509_free, bad reference count\n");
-               abort();
-               }
-#endif
-
-       X509_CINF_free(a->cert_info);
-       X509_ALGOR_free(a->sig_alg);
-       ASN1_BIT_STRING_free(a->signature);
-       if (a->name != NULL) Free(a->name);
-       Free((char *)a);
-       }
-
+X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
+{
+    const unsigned char *q;
+    X509 *ret;
+    int freeret = 0;
+
+    /* Save start position */
+    q = *pp;
+
+    if(!a || *a == NULL) {
+        freeret = 1;
+    }
+    ret = d2i_X509(a, pp, length);
+    /* If certificate unreadable then forget it */
+    if (!ret)
+        return NULL;
+    /* update length */
+    length -= *pp - q;
+    if (!length)
+        return ret;
+    if (!d2i_X509_CERT_AUX(&ret->aux, pp, length))
+        goto err;
+    return ret;
+ err:
+    if(freeret) {
+        X509_free(ret);
+        if (a)
+            *a = NULL;
+    }
+    return NULL;
+}
+
+int i2d_X509_AUX(X509 *a, unsigned char **pp)
+{
+    int length;
+    length = i2d_X509(a, pp);
+    if (a)
+        length += i2d_X509_CERT_AUX(a->aux, pp);
+    return length;
+}
+
+int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
+{
+    x->cert_info->enc.modified = 1;
+    return i2d_X509_CINF(x->cert_info, pp);
+}
+
+void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg,
+                         const X509 *x)
+{
+    if (psig)
+        *psig = x->signature;
+    if (palg)
+        *palg = x->sig_alg;
+}
+
+int X509_get_signature_nid(const X509 *x)
+{
+    return OBJ_obj2nid(x->sig_alg->algorithm);
+}