initial/final commitHEADmaster

1 files changed, 240 insertions, 0 deletions

diff --git a/openssl-1.1.0h/crypto/asn1/tasn_utl.c b/openssl-1.1.0h/crypto/asn1/tasn_utl.c
new file mode 100644
index 0000000..f79d7d6
--- /dev/null
+++ b/openssl-1.1.0h/crypto/asn1/tasn_utl.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stddef.h>
+#include <string.h>
+#include <internal/cryptlib.h>
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/objects.h>
+#include <openssl/err.h>
+#include "asn1_locl.h"
+
+/* Utility functions for manipulating fields and offsets */
+
+/* Add 'offset' to 'addr' */
+#define offset2ptr(addr, offset) (void *)(((char *) addr) + offset)
+
+/*
+ * Given an ASN1_ITEM CHOICE type return the selector value
+ */
+
+int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    int *sel = offset2ptr(*pval, it->utype);
+    return *sel;
+}
+
+/*
+ * Given an ASN1_ITEM CHOICE type set the selector value, return old value.
+ */
+
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
+                             const ASN1_ITEM *it)
+{
+    int *sel, ret;
+    sel = offset2ptr(*pval, it->utype);
+    ret = *sel;
+    *sel = value;
+    return ret;
+}
+
+/*
+ * Do atomic reference counting. The value 'op' decides what to do.
+ * If it is +1 then the count is incremented.
+ * If |op| is 0, lock is initialised and count is set to 1.
+ * If |op| is -1, count is decremented and the return value is the current
+ * reference count or 0 if no reference count is active.
+ * It returns -1 on initialisation error.
+ * Used by ASN1_SEQUENCE construct of X509, X509_REQ, X509_CRL objects
+ */
+int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it)
+{
+    const ASN1_AUX *aux;
+    int *lck, ret;
+    CRYPTO_RWLOCK **lock;
+    if ((it->itype != ASN1_ITYPE_SEQUENCE)
+        && (it->itype != ASN1_ITYPE_NDEF_SEQUENCE))
+        return 0;
+    aux = it->funcs;
+    if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT))
+        return 0;
+    lck = offset2ptr(*pval, aux->ref_offset);
+    lock = offset2ptr(*pval, aux->ref_lock);
+    if (op == 0) {
+        *lck = 1;
+        *lock = CRYPTO_THREAD_lock_new();
+        if (*lock == NULL) {
+            ASN1err(ASN1_F_ASN1_DO_LOCK, ERR_R_MALLOC_FAILURE);
+            return -1;
+        }
+        return 1;
+    }
+    if (CRYPTO_atomic_add(lck, op, &ret, *lock) < 0)
+        return -1;  /* failed */
+#ifdef REF_PRINT
+    fprintf(stderr, "%p:%4d:%s\n", it, *lck, it->sname);
+#endif
+    REF_ASSERT_ISNT(ret < 0);
+    if (ret == 0) {
+        CRYPTO_THREAD_lock_free(*lock);
+        *lock = NULL;
+    }
+    return ret;
+}
+
+static ASN1_ENCODING *asn1_get_enc_ptr(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    const ASN1_AUX *aux;
+    if (!pval || !*pval)
+        return NULL;
+    aux = it->funcs;
+    if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))
+        return NULL;
+    return offset2ptr(*pval, aux->enc_offset);
+}
+
+void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    ASN1_ENCODING *enc;
+    enc = asn1_get_enc_ptr(pval, it);
+    if (enc) {
+        enc->enc = NULL;
+        enc->len = 0;
+        enc->modified = 1;
+    }
+}
+
+void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    ASN1_ENCODING *enc;
+    enc = asn1_get_enc_ptr(pval, it);
+    if (enc) {
+        OPENSSL_free(enc->enc);
+        enc->enc = NULL;
+        enc->len = 0;
+        enc->modified = 1;
+    }
+}
+
+int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
+                  const ASN1_ITEM *it)
+{
+    ASN1_ENCODING *enc;
+    enc = asn1_get_enc_ptr(pval, it);
+    if (!enc)
+        return 1;
+
+    OPENSSL_free(enc->enc);
+    enc->enc = OPENSSL_malloc(inlen);
+    if (enc->enc == NULL)
+        return 0;
+    memcpy(enc->enc, in, inlen);
+    enc->len = inlen;
+    enc->modified = 0;
+
+    return 1;
+}
+
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
+                     const ASN1_ITEM *it)
+{
+    ASN1_ENCODING *enc;
+    enc = asn1_get_enc_ptr(pval, it);
+    if (!enc || enc->modified)
+        return 0;
+    if (out) {
+        memcpy(*out, enc->enc, enc->len);
+        *out += enc->len;
+    }
+    if (len)
+        *len = enc->len;
+    return 1;
+}
+
+/* Given an ASN1_TEMPLATE get a pointer to a field */
+ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    ASN1_VALUE **pvaltmp;
+    pvaltmp = offset2ptr(*pval, tt->offset);
+    /*
+     * NOTE for BOOLEAN types the field is just a plain int so we can't
+     * return int **, so settle for (int *).
+     */
+    return pvaltmp;
+}
+
+/*
+ * Handle ANY DEFINED BY template, find the selector, look up the relevant
+ * ASN1_TEMPLATE in the table and return it.
+ */
+
+const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
+                                 int nullerr)
+{
+    const ASN1_ADB *adb;
+    const ASN1_ADB_TABLE *atbl;
+    long selector;
+    ASN1_VALUE **sfld;
+    int i;
+    if (!(tt->flags & ASN1_TFLG_ADB_MASK))
+        return tt;
+
+    /* Else ANY DEFINED BY ... get the table */
+    adb = ASN1_ADB_ptr(tt->item);
+
+    /* Get the selector field */
+    sfld = offset2ptr(*pval, adb->offset);
+
+    /* Check if NULL */
+    if (*sfld == NULL) {
+        if (!adb->null_tt)
+            goto err;
+        return adb->null_tt;
+    }
+
+    /*
+     * Convert type to a long: NB: don't check for NID_undef here because it
+     * might be a legitimate value in the table
+     */
+    if (tt->flags & ASN1_TFLG_ADB_OID)
+        selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
+    else
+        selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
+
+    /* Let application callback translate value */
+    if (adb->adb_cb != NULL && adb->adb_cb(&selector) == 0) {
+        ASN1err(ASN1_F_ASN1_DO_ADB, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+        return NULL;
+    }
+
+    /*
+     * Try to find matching entry in table Maybe should check application
+     * types first to allow application override? Might also be useful to
+     * have a flag which indicates table is sorted and we can do a binary
+     * search. For now stick to a linear search.
+     */
+
+    for (atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++)
+        if (atbl->value == selector)
+            return &atbl->tt;
+
+    /* FIXME: need to search application table too */
+
+    /* No match, return default type */
+    if (!adb->default_tt)
+        goto err;
+    return adb->default_tt;
+
+ err:
+    /* FIXME: should log the value or OID of unsupported type */
+    if (nullerr)
+        ASN1err(ASN1_F_ASN1_DO_ADB, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+    return NULL;
+}