intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 200 insertions, 0 deletions

diff --git a/contrib/libs/openssl/crypto/bio/bf_nbio.c b/contrib/libs/openssl/crypto/bio/bf_nbio.c
new file mode 100644
index 0000000000..dd7011ab66
--- /dev/null
+++ b/contrib/libs/openssl/crypto/bio/bf_nbio.c
@@ -0,0 +1,200 @@
+/*
+ * Copyright 1995-2018 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 <errno.h>
+#include "bio_local.h"
+#include "internal/cryptlib.h"
+#include <openssl/rand.h>
+
+/*
+ * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest
+ */
+
+static int nbiof_write(BIO *h, const char *buf, int num);
+static int nbiof_read(BIO *h, char *buf, int size);
+static int nbiof_puts(BIO *h, const char *str);
+static int nbiof_gets(BIO *h, char *str, int size);
+static long nbiof_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int nbiof_new(BIO *h);
+static int nbiof_free(BIO *data);
+static long nbiof_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
+typedef struct nbio_test_st {
+    /* only set if we sent a 'should retry' error */
+    int lrn;
+    int lwn;
+} NBIO_TEST;
+
+static const BIO_METHOD methods_nbiof = {
+    BIO_TYPE_NBIO_TEST,
+    "non-blocking IO test filter",
+    /* TODO: Convert to new style write function */
+    bwrite_conv,
+    nbiof_write,
+    /* TODO: Convert to new style read function */
+    bread_conv,
+    nbiof_read,
+    nbiof_puts,
+    nbiof_gets,
+    nbiof_ctrl,
+    nbiof_new,
+    nbiof_free,
+    nbiof_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_f_nbio_test(void)
+{
+    return &methods_nbiof;
+}
+
+static int nbiof_new(BIO *bi)
+{
+    NBIO_TEST *nt;
+
+    if ((nt = OPENSSL_zalloc(sizeof(*nt))) == NULL) {
+        BIOerr(BIO_F_NBIOF_NEW, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    nt->lrn = -1;
+    nt->lwn = -1;
+    bi->ptr = (char *)nt;
+    bi->init = 1;
+    return 1;
+}
+
+static int nbiof_free(BIO *a)
+{
+    if (a == NULL)
+        return 0;
+    OPENSSL_free(a->ptr);
+    a->ptr = NULL;
+    a->init = 0;
+    a->flags = 0;
+    return 1;
+}
+
+static int nbiof_read(BIO *b, char *out, int outl)
+{
+    int ret = 0;
+    int num;
+    unsigned char n;
+
+    if (out == NULL)
+        return 0;
+    if (b->next_bio == NULL)
+        return 0;
+
+    BIO_clear_retry_flags(b);
+    if (RAND_priv_bytes(&n, 1) <= 0)
+        return -1;
+    num = (n & 0x07);
+
+    if (outl > num)
+        outl = num;
+
+    if (num == 0) {
+        ret = -1;
+        BIO_set_retry_read(b);
+    } else {
+        ret = BIO_read(b->next_bio, out, outl);
+        if (ret < 0)
+            BIO_copy_next_retry(b);
+    }
+    return ret;
+}
+
+static int nbiof_write(BIO *b, const char *in, int inl)
+{
+    NBIO_TEST *nt;
+    int ret = 0;
+    int num;
+    unsigned char n;
+
+    if ((in == NULL) || (inl <= 0))
+        return 0;
+    if (b->next_bio == NULL)
+        return 0;
+    nt = (NBIO_TEST *)b->ptr;
+
+    BIO_clear_retry_flags(b);
+
+    if (nt->lwn > 0) {
+        num = nt->lwn;
+        nt->lwn = 0;
+    } else {
+        if (RAND_priv_bytes(&n, 1) <= 0)
+            return -1;
+        num = (n & 7);
+    }
+
+    if (inl > num)
+        inl = num;
+
+    if (num == 0) {
+        ret = -1;
+        BIO_set_retry_write(b);
+    } else {
+        ret = BIO_write(b->next_bio, in, inl);
+        if (ret < 0) {
+            BIO_copy_next_retry(b);
+            nt->lwn = inl;
+        }
+    }
+    return ret;
+}
+
+static long nbiof_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+    long ret;
+
+    if (b->next_bio == NULL)
+        return 0;
+    switch (cmd) {
+    case BIO_C_DO_STATE_MACHINE:
+        BIO_clear_retry_flags(b);
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        BIO_copy_next_retry(b);
+        break;
+    case BIO_CTRL_DUP:
+        ret = 0L;
+        break;
+    default:
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    }
+    return ret;
+}
+
+static long nbiof_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
+{
+    long ret = 1;
+
+    if (b->next_bio == NULL)
+        return 0;
+    switch (cmd) {
+    default:
+        ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
+        break;
+    }
+    return ret;
+}
+
+static int nbiof_gets(BIO *bp, char *buf, int size)
+{
+    if (bp->next_bio == NULL)
+        return 0;
+    return BIO_gets(bp->next_bio, buf, size);
+}
+
+static int nbiof_puts(BIO *bp, const char *str)
+{
+    if (bp->next_bio == NULL)
+        return 0;
+    return BIO_puts(bp->next_bio, str);
+}