intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 412 insertions, 0 deletions

diff --git a/contrib/libs/openssl/crypto/asn1/asn1_lib.c b/contrib/libs/openssl/crypto/asn1/asn1_lib.c
new file mode 100644
index 0000000000..3d99d1383d
--- /dev/null
+++ b/contrib/libs/openssl/crypto/asn1/asn1_lib.c
@@ -0,0 +1,412 @@
+/*
+ * Copyright 1995-2021 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 <stdio.h>
+#include <limits.h>
+#include "internal/cryptlib.h"
+#include <openssl/asn1.h>
+#include "asn1_local.h"
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+                           long max);
+static void asn1_put_length(unsigned char **pp, int length);
+
+static int _asn1_check_infinite_end(const unsigned char **p, long len)
+{
+    /*
+     * If there is 0 or 1 byte left, the length check should pick things up
+     */
+    if (len <= 0)
+        return 1;
+    else if ((len >= 2) && ((*p)[0] == 0) && ((*p)[1] == 0)) {
+        (*p) += 2;
+        return 1;
+    }
+    return 0;
+}
+
+int ASN1_check_infinite_end(unsigned char **p, long len)
+{
+    return _asn1_check_infinite_end((const unsigned char **)p, len);
+}
+
+int ASN1_const_check_infinite_end(const unsigned char **p, long len)
+{
+    return _asn1_check_infinite_end(p, len);
+}
+
+int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
+                    int *pclass, long omax)
+{
+    int i, ret;
+    long l;
+    const unsigned char *p = *pp;
+    int tag, xclass, inf;
+    long max = omax;
+
+    if (!max)
+        goto err;
+    ret = (*p & V_ASN1_CONSTRUCTED);
+    xclass = (*p & V_ASN1_PRIVATE);
+    i = *p & V_ASN1_PRIMITIVE_TAG;
+    if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
+        p++;
+        if (--max == 0)
+            goto err;
+        l = 0;
+        while (*p & 0x80) {
+            l <<= 7L;
+            l |= *(p++) & 0x7f;
+            if (--max == 0)
+                goto err;
+            if (l > (INT_MAX >> 7L))
+                goto err;
+        }
+        l <<= 7L;
+        l |= *(p++) & 0x7f;
+        tag = (int)l;
+        if (--max == 0)
+            goto err;
+    } else {
+        tag = i;
+        p++;
+        if (--max == 0)
+            goto err;
+    }
+    *ptag = tag;
+    *pclass = xclass;
+    if (!asn1_get_length(&p, &inf, plength, max))
+        goto err;
+
+    if (inf && !(ret & V_ASN1_CONSTRUCTED))
+        goto err;
+
+    if (*plength > (omax - (p - *pp))) {
+        ASN1err(ASN1_F_ASN1_GET_OBJECT, ASN1_R_TOO_LONG);
+        /*
+         * Set this so that even if things are not long enough the values are
+         * set correctly
+         */
+        ret |= 0x80;
+    }
+    *pp = p;
+    return ret | inf;
+ err:
+    ASN1err(ASN1_F_ASN1_GET_OBJECT, ASN1_R_HEADER_TOO_LONG);
+    return 0x80;
+}
+
+/*
+ * Decode a length field.
+ * The short form is a single byte defining a length 0 - 127.
+ * The long form is a byte 0 - 127 with the top bit set and this indicates
+ * the number of following octets that contain the length.  These octets
+ * are stored most significant digit first.
+ */
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+                           long max)
+{
+    const unsigned char *p = *pp;
+    unsigned long ret = 0;
+    int i;
+
+    if (max-- < 1)
+        return 0;
+    if (*p == 0x80) {
+        *inf = 1;
+        p++;
+    } else {
+        *inf = 0;
+        i = *p & 0x7f;
+        if (*p++ & 0x80) {
+            if (max < i + 1)
+                return 0;
+            /* Skip leading zeroes */
+            while (i > 0 && *p == 0) {
+                p++;
+                i--;
+            }
+            if (i > (int)sizeof(long))
+                return 0;
+            while (i > 0) {
+                ret <<= 8;
+                ret |= *p++;
+                i--;
+            }
+            if (ret > LONG_MAX)
+                return 0;
+        } else
+            ret = i;
+    }
+    *pp = p;
+    *rl = (long)ret;
+    return 1;
+}
+
+/*
+ * class 0 is constructed constructed == 2 for indefinite length constructed
+ */
+void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
+                     int xclass)
+{
+    unsigned char *p = *pp;
+    int i, ttag;
+
+    i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
+    i |= (xclass & V_ASN1_PRIVATE);
+    if (tag < 31)
+        *(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
+    else {
+        *(p++) = i | V_ASN1_PRIMITIVE_TAG;
+        for (i = 0, ttag = tag; ttag > 0; i++)
+            ttag >>= 7;
+        ttag = i;
+        while (i-- > 0) {
+            p[i] = tag & 0x7f;
+            if (i != (ttag - 1))
+                p[i] |= 0x80;
+            tag >>= 7;
+        }
+        p += ttag;
+    }
+    if (constructed == 2)
+        *(p++) = 0x80;
+    else
+        asn1_put_length(&p, length);
+    *pp = p;
+}
+
+int ASN1_put_eoc(unsigned char **pp)
+{
+    unsigned char *p = *pp;
+    *p++ = 0;
+    *p++ = 0;
+    *pp = p;
+    return 2;
+}
+
+static void asn1_put_length(unsigned char **pp, int length)
+{
+    unsigned char *p = *pp;
+    int i, l;
+    if (length <= 127)
+        *(p++) = (unsigned char)length;
+    else {
+        l = length;
+        for (i = 0; l > 0; i++)
+            l >>= 8;
+        *(p++) = i | 0x80;
+        l = i;
+        while (i-- > 0) {
+            p[i] = length & 0xff;
+            length >>= 8;
+        }
+        p += l;
+    }
+    *pp = p;
+}
+
+int ASN1_object_size(int constructed, int length, int tag)
+{
+    int ret = 1;
+    if (length < 0)
+        return -1;
+    if (tag >= 31) {
+        while (tag > 0) {
+            tag >>= 7;
+            ret++;
+        }
+    }
+    if (constructed == 2) {
+        ret += 3;
+    } else {
+        ret++;
+        if (length > 127) {
+            int tmplen = length;
+            while (tmplen > 0) {
+                tmplen >>= 8;
+                ret++;
+            }
+        }
+    }
+    if (ret >= INT_MAX - length)
+        return -1;
+    return ret + length;
+}
+
+int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
+{
+    if (str == NULL)
+        return 0;
+    dst->type = str->type;
+    if (!ASN1_STRING_set(dst, str->data, str->length))
+        return 0;
+    /* Copy flags but preserve embed value */
+    dst->flags &= ASN1_STRING_FLAG_EMBED;
+    dst->flags |= str->flags & ~ASN1_STRING_FLAG_EMBED;
+    return 1;
+}
+
+ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
+{
+    ASN1_STRING *ret;
+    if (!str)
+        return NULL;
+    ret = ASN1_STRING_new();
+    if (ret == NULL)
+        return NULL;
+    if (!ASN1_STRING_copy(ret, str)) {
+        ASN1_STRING_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len_in)
+{
+    unsigned char *c;
+    const char *data = _data;
+    size_t len;
+
+    if (len_in < 0) {
+        if (data == NULL)
+            return 0;
+        len = strlen(data);
+    } else {
+        len = (size_t)len_in;
+    }
+    /*
+     * Verify that the length fits within an integer for assignment to
+     * str->length below.  The additional 1 is subtracted to allow for the
+     * '\0' terminator even though this isn't strictly necessary.
+     */
+    if (len > INT_MAX - 1) {
+        ASN1err(0, ASN1_R_TOO_LARGE);
+        return 0;
+    }
+    if ((size_t)str->length <= len || str->data == NULL) {
+        c = str->data;
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+        /* No NUL terminator in fuzzing builds */
+        str->data = OPENSSL_realloc(c, len);
+#else
+        str->data = OPENSSL_realloc(c, len + 1);
+#endif
+        if (str->data == NULL) {
+            ASN1err(ASN1_F_ASN1_STRING_SET, ERR_R_MALLOC_FAILURE);
+            str->data = c;
+            return 0;
+        }
+    }
+    str->length = len;
+    if (data != NULL) {
+        memcpy(str->data, data, len);
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+        /*
+         * Add a NUL terminator. This should not be necessary - but we add it as
+         * a safety precaution
+         */
+        str->data[len] = '\0';
+#endif
+    }
+    return 1;
+}
+
+void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
+{
+    OPENSSL_free(str->data);
+    str->data = data;
+    str->length = len;
+}
+
+ASN1_STRING *ASN1_STRING_new(void)
+{
+    return ASN1_STRING_type_new(V_ASN1_OCTET_STRING);
+}
+
+ASN1_STRING *ASN1_STRING_type_new(int type)
+{
+    ASN1_STRING *ret;
+
+    ret = OPENSSL_zalloc(sizeof(*ret));
+    if (ret == NULL) {
+        ASN1err(ASN1_F_ASN1_STRING_TYPE_NEW, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    ret->type = type;
+    return ret;
+}
+
+void asn1_string_embed_free(ASN1_STRING *a, int embed)
+{
+    if (a == NULL)
+        return;
+    if (!(a->flags & ASN1_STRING_FLAG_NDEF))
+        OPENSSL_free(a->data);
+    if (embed == 0)
+        OPENSSL_free(a);
+}
+
+void ASN1_STRING_free(ASN1_STRING *a)
+{
+    if (a == NULL)
+        return;
+    asn1_string_embed_free(a, a->flags & ASN1_STRING_FLAG_EMBED);
+}
+
+void ASN1_STRING_clear_free(ASN1_STRING *a)
+{
+    if (a == NULL)
+        return;
+    if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
+        OPENSSL_cleanse(a->data, a->length);
+    ASN1_STRING_free(a);
+}
+
+int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
+{
+    int i;
+
+    i = (a->length - b->length);
+    if (i == 0) {
+        i = memcmp(a->data, b->data, a->length);
+        if (i == 0)
+            return a->type - b->type;
+        else
+            return i;
+    } else
+        return i;
+}
+
+int ASN1_STRING_length(const ASN1_STRING *x)
+{
+    return x->length;
+}
+
+void ASN1_STRING_length_set(ASN1_STRING *x, int len)
+{
+    x->length = len;
+}
+
+int ASN1_STRING_type(const ASN1_STRING *x)
+{
+    return x->type;
+}
+
+const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x)
+{
+    return x->data;
+}
+
+# if OPENSSL_API_COMPAT < 0x10100000L
+unsigned char *ASN1_STRING_data(ASN1_STRING *x)
+{
+    return x->data;
+}
+#endif