Upgrade openssl from 1.1.0e to 1.1.1b, with source code. 4.0.78

trunk/3rdparty/openssl-1.1-fit/crypto/asn1/a_bitstr.c

@@ -0,0 +1,216 @@
+/*
+ * Copyright 1995-2016 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 <limits.h>
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/asn1.h>
+#include "asn1_locl.h"
+
+int ASN1_BIT_STRING_set(ASN1_BIT_STRING *x, unsigned char *d, int len)
+{
+    return ASN1_STRING_set(x, d, len);
+}
+
+int i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a, unsigned char **pp)
+{
+    int ret, j, bits, len;
+    unsigned char *p, *d;
+
+    if (a == NULL)
+        return 0;
+
+    len = a->length;
+
+    if (len > 0) {
+        if (a->flags & ASN1_STRING_FLAG_BITS_LEFT) {
+            bits = (int)a->flags & 0x07;
+        } else {
+            for (; len > 0; len--) {
+                if (a->data[len - 1])
+                    break;
+            }
+            j = a->data[len - 1];
+            if (j & 0x01)
+                bits = 0;
+            else if (j & 0x02)
+                bits = 1;
+            else if (j & 0x04)
+                bits = 2;
+            else if (j & 0x08)
+                bits = 3;
+            else if (j & 0x10)
+                bits = 4;
+            else if (j & 0x20)
+                bits = 5;
+            else if (j & 0x40)
+                bits = 6;
+            else if (j & 0x80)
+                bits = 7;
+            else
+                bits = 0;       /* should not happen */
+        }
+    } else
+        bits = 0;
+
+    ret = 1 + len;
+    if (pp == NULL)
+        return ret;
+
+    p = *pp;
+
+    *(p++) = (unsigned char)bits;
+    d = a->data;
+    if (len > 0) {
+        memcpy(p, d, len);
+        p += len;
+        p[-1] &= (0xff << bits);
+    }
+    *pp = p;
+    return ret;
+}
+
+ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
+                                     const unsigned char **pp, long len)
+{
+    ASN1_BIT_STRING *ret = NULL;
+    const unsigned char *p;
+    unsigned char *s;
+    int i;
+
+    if (len < 1) {
+        i = ASN1_R_STRING_TOO_SHORT;
+        goto err;
+    }
+
+    if (len > INT_MAX) {
+        i = ASN1_R_STRING_TOO_LONG;
+        goto err;
+    }
+
+    if ((a == NULL) || ((*a) == NULL)) {
+        if ((ret = ASN1_BIT_STRING_new()) == NULL)
+            return NULL;
+    } else
+        ret = (*a);
+
+    p = *pp;
+    i = *(p++);
+    if (i > 7) {
+        i = ASN1_R_INVALID_BIT_STRING_BITS_LEFT;
+        goto err;
+    }
+    /*
+     * We do this to preserve the settings.  If we modify the settings, via
+     * the _set_bit function, we will recalculate on output
+     */
+    ret->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear */
+    ret->flags |= (ASN1_STRING_FLAG_BITS_LEFT | i); /* set */
+
+    if (len-- > 1) {            /* using one because of the bits left byte */
+        s = OPENSSL_malloc((int)len);
+        if (s == NULL) {
+            i = ERR_R_MALLOC_FAILURE;
+            goto err;
+        }
+        memcpy(s, p, (int)len);
+        s[len - 1] &= (0xff << i);
+        p += len;
+    } else
+        s = NULL;
+
+    ret->length = (int)len;
+    OPENSSL_free(ret->data);
+    ret->data = s;
+    ret->type = V_ASN1_BIT_STRING;
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return ret;
+ err:
+    ASN1err(ASN1_F_C2I_ASN1_BIT_STRING, i);
+    if ((a == NULL) || (*a != ret))
+        ASN1_BIT_STRING_free(ret);
+    return NULL;
+}
+
+/*
+ * These next 2 functions from Goetz Babin-Ebell.
+ */
+int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value)
+{
+    int w, v, iv;
+    unsigned char *c;
+
+    w = n / 8;
+    v = 1 << (7 - (n & 0x07));
+    iv = ~v;
+    if (!value)
+        v = 0;
+
+    if (a == NULL)
+        return 0;
+
+    a->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear, set on write */
+
+    if ((a->length < (w + 1)) || (a->data == NULL)) {
+        if (!value)
+            return 1;         /* Don't need to set */
+        c = OPENSSL_clear_realloc(a->data, a->length, w + 1);
+        if (c == NULL) {
+            ASN1err(ASN1_F_ASN1_BIT_STRING_SET_BIT, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        if (w + 1 - a->length > 0)
+            memset(c + a->length, 0, w + 1 - a->length);
+        a->data = c;
+        a->length = w + 1;
+    }
+    a->data[w] = ((a->data[w]) & iv) | v;
+    while ((a->length > 0) && (a->data[a->length - 1] == 0))
+        a->length--;
+    return 1;
+}
+
+int ASN1_BIT_STRING_get_bit(const ASN1_BIT_STRING *a, int n)
+{
+    int w, v;
+
+    w = n / 8;
+    v = 1 << (7 - (n & 0x07));
+    if ((a == NULL) || (a->length < (w + 1)) || (a->data == NULL))
+        return 0;
+    return ((a->data[w] & v) != 0);
+}
+
+/*
+ * Checks if the given bit string contains only bits specified by
+ * the flags vector. Returns 0 if there is at least one bit set in 'a'
+ * which is not specified in 'flags', 1 otherwise.
+ * 'len' is the length of 'flags'.
+ */
+int ASN1_BIT_STRING_check(const ASN1_BIT_STRING *a,
+                          const unsigned char *flags, int flags_len)
+{
+    int i, ok;
+    /* Check if there is one bit set at all. */
+    if (!a || !a->data)
+        return 1;
+
+    /*
+     * Check each byte of the internal representation of the bit string.
+     */
+    ok = 1;
+    for (i = 0; i < a->length && ok; ++i) {
+        unsigned char mask = i < flags_len ? ~flags[i] : 0xff;
+        /* We are done if there is an unneeded bit set. */
+        ok = (a->data[i] & mask) == 0;
+    }
+    return ok;
+}