1 files changed, 428 insertions, 0 deletions

diff --git a/thirdparty/openssl/crypto/evp/bio_enc.c b/thirdparty/openssl/crypto/evp/bio_enc.c
new file mode 100644
index 0000000000..363e0246ae
--- /dev/null
+++ b/thirdparty/openssl/crypto/evp/bio_enc.c
@@ -0,0 +1,428 @@
+/* crypto/evp/bio_enc.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * 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:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     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
+ *    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
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include "cryptlib.h"
+#include <openssl/buffer.h>
+#include <openssl/evp.h>
+
+static int enc_write(BIO *h, const char *buf, int num);
+static int enc_read(BIO *h, char *buf, int size);
+/*
+ * static int enc_puts(BIO *h, const char *str);
+ */
+/*
+ * static int enc_gets(BIO *h, char *str, int size);
+ */
+static long enc_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int enc_new(BIO *h);
+static int enc_free(BIO *data);
+static long enc_callback_ctrl(BIO *h, int cmd, bio_info_cb *fps);
+#define ENC_BLOCK_SIZE  (1024*4)
+#define BUF_OFFSET      (EVP_MAX_BLOCK_LENGTH*2)
+
+typedef struct enc_struct {
+    int buf_len;
+    int buf_off;
+    int cont;                   /* <= 0 when finished */
+    int finished;
+    int ok;                     /* bad decrypt */
+    EVP_CIPHER_CTX cipher;
+    /*
+     * buf is larger than ENC_BLOCK_SIZE because EVP_DecryptUpdate can return
+     * up to a block more data than is presented to it
+     */
+    char buf[ENC_BLOCK_SIZE + BUF_OFFSET + 2];
+} BIO_ENC_CTX;
+
+static BIO_METHOD methods_enc = {
+    BIO_TYPE_CIPHER, "cipher",
+    enc_write,
+    enc_read,
+    NULL,                       /* enc_puts, */
+    NULL,                       /* enc_gets, */
+    enc_ctrl,
+    enc_new,
+    enc_free,
+    enc_callback_ctrl,
+};
+
+BIO_METHOD *BIO_f_cipher(void)
+{
+    return (&methods_enc);
+}
+
+static int enc_new(BIO *bi)
+{
+    BIO_ENC_CTX *ctx;
+
+    ctx = (BIO_ENC_CTX *)OPENSSL_malloc(sizeof(BIO_ENC_CTX));
+    if (ctx == NULL)
+        return (0);
+    EVP_CIPHER_CTX_init(&ctx->cipher);
+
+    ctx->buf_len = 0;
+    ctx->buf_off = 0;
+    ctx->cont = 1;
+    ctx->finished = 0;
+    ctx->ok = 1;
+
+    bi->init = 0;
+    bi->ptr = (char *)ctx;
+    bi->flags = 0;
+    return (1);
+}
+
+static int enc_free(BIO *a)
+{
+    BIO_ENC_CTX *b;
+
+    if (a == NULL)
+        return (0);
+    b = (BIO_ENC_CTX *)a->ptr;
+    EVP_CIPHER_CTX_cleanup(&(b->cipher));
+    OPENSSL_cleanse(a->ptr, sizeof(BIO_ENC_CTX));
+    OPENSSL_free(a->ptr);
+    a->ptr = NULL;
+    a->init = 0;
+    a->flags = 0;
+    return (1);
+}
+
+static int enc_read(BIO *b, char *out, int outl)
+{
+    int ret = 0, i;
+    BIO_ENC_CTX *ctx;
+
+    if (out == NULL)
+        return (0);
+    ctx = (BIO_ENC_CTX *)b->ptr;
+
+    if ((ctx == NULL) || (b->next_bio == NULL))
+        return (0);
+
+    /* First check if there are bytes decoded/encoded */
+    if (ctx->buf_len > 0) {
+        i = ctx->buf_len - ctx->buf_off;
+        if (i > outl)
+            i = outl;
+        memcpy(out, &(ctx->buf[ctx->buf_off]), i);
+        ret = i;
+        out += i;
+        outl -= i;
+        ctx->buf_off += i;
+        if (ctx->buf_len == ctx->buf_off) {
+            ctx->buf_len = 0;
+            ctx->buf_off = 0;
+        }
+    }
+
+    /*
+     * At this point, we have room of outl bytes and an empty buffer, so we
+     * should read in some more.
+     */
+
+    while (outl > 0) {
+        if (ctx->cont <= 0)
+            break;
+
+        /*
+         * read in at IV offset, read the EVP_Cipher documentation about why
+         */
+        i = BIO_read(b->next_bio, &(ctx->buf[BUF_OFFSET]), ENC_BLOCK_SIZE);
+
+        if (i <= 0) {
+            /* Should be continue next time we are called? */
+            if (!BIO_should_retry(b->next_bio)) {
+                ctx->cont = i;
+                i = EVP_CipherFinal_ex(&(ctx->cipher),
+                                       (unsigned char *)ctx->buf,
+                                       &(ctx->buf_len));
+                ctx->ok = i;
+                ctx->buf_off = 0;
+            } else {
+                ret = (ret == 0) ? i : ret;
+                break;
+            }
+        } else {
+            EVP_CipherUpdate(&(ctx->cipher),
+                             (unsigned char *)ctx->buf, &ctx->buf_len,
+                             (unsigned char *)&(ctx->buf[BUF_OFFSET]), i);
+            ctx->cont = 1;
+            /*
+             * Note: it is possible for EVP_CipherUpdate to decrypt zero
+             * bytes because this is or looks like the final block: if this
+             * happens we should retry and either read more data or decrypt
+             * the final block
+             */
+            if (ctx->buf_len == 0)
+                continue;
+        }
+
+        if (ctx->buf_len <= outl)
+            i = ctx->buf_len;
+        else
+            i = outl;
+        if (i <= 0)
+            break;
+        memcpy(out, ctx->buf, i);
+        ret += i;
+        ctx->buf_off = i;
+        outl -= i;
+        out += i;
+    }
+
+    BIO_clear_retry_flags(b);
+    BIO_copy_next_retry(b);
+    return ((ret == 0) ? ctx->cont : ret);
+}
+
+static int enc_write(BIO *b, const char *in, int inl)
+{
+    int ret = 0, n, i;
+    BIO_ENC_CTX *ctx;
+
+    ctx = (BIO_ENC_CTX *)b->ptr;
+    ret = inl;
+
+    BIO_clear_retry_flags(b);
+    n = ctx->buf_len - ctx->buf_off;
+    while (n > 0) {
+        i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n);
+        if (i <= 0) {
+            BIO_copy_next_retry(b);
+            return (i);
+        }
+        ctx->buf_off += i;
+        n -= i;
+    }
+    /* at this point all pending data has been written */
+
+    if ((in == NULL) || (inl <= 0))
+        return (0);
+
+    ctx->buf_off = 0;
+    while (inl > 0) {
+        n = (inl > ENC_BLOCK_SIZE) ? ENC_BLOCK_SIZE : inl;
+        EVP_CipherUpdate(&(ctx->cipher),
+                         (unsigned char *)ctx->buf, &ctx->buf_len,
+                         (unsigned char *)in, n);
+        inl -= n;
+        in += n;
+
+        ctx->buf_off = 0;
+        n = ctx->buf_len;
+        while (n > 0) {
+            i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n);
+            if (i <= 0) {
+                BIO_copy_next_retry(b);
+                return (ret == inl) ? i : ret - inl;
+            }
+            n -= i;
+            ctx->buf_off += i;
+        }
+        ctx->buf_len = 0;
+        ctx->buf_off = 0;
+    }
+    BIO_copy_next_retry(b);
+    return (ret);
+}
+
+static long enc_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+    BIO *dbio;
+    BIO_ENC_CTX *ctx, *dctx;
+    long ret = 1;
+    int i;
+    EVP_CIPHER_CTX **c_ctx;
+
+    ctx = (BIO_ENC_CTX *)b->ptr;
+
+    switch (cmd) {
+    case BIO_CTRL_RESET:
+        ctx->ok = 1;
+        ctx->finished = 0;
+        EVP_CipherInit_ex(&(ctx->cipher), NULL, NULL, NULL, NULL,
+                          ctx->cipher.encrypt);
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_CTRL_EOF:         /* More to read */
+        if (ctx->cont <= 0)
+            ret = 1;
+        else
+            ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_CTRL_WPENDING:
+        ret = ctx->buf_len - ctx->buf_off;
+        if (ret <= 0)
+            ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_CTRL_PENDING:     /* More to read in buffer */
+        ret = ctx->buf_len - ctx->buf_off;
+        if (ret <= 0)
+            ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_CTRL_FLUSH:
+        /* do a final write */
+ again:
+        while (ctx->buf_len != ctx->buf_off) {
+            i = enc_write(b, NULL, 0);
+            if (i < 0)
+                return i;
+        }
+
+        if (!ctx->finished) {
+            ctx->finished = 1;
+            ctx->buf_off = 0;
+            ret = EVP_CipherFinal_ex(&(ctx->cipher),
+                                     (unsigned char *)ctx->buf,
+                                     &(ctx->buf_len));
+            ctx->ok = (int)ret;
+            if (ret <= 0)
+                break;
+
+            /* push out the bytes */
+            goto again;
+        }
+
+        /* Finally flush the underlying BIO */
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_C_GET_CIPHER_STATUS:
+        ret = (long)ctx->ok;
+        break;
+    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_C_GET_CIPHER_CTX:
+        c_ctx = (EVP_CIPHER_CTX **)ptr;
+        (*c_ctx) = &(ctx->cipher);
+        b->init = 1;
+        break;
+    case BIO_CTRL_DUP:
+        dbio = (BIO *)ptr;
+        dctx = (BIO_ENC_CTX *)dbio->ptr;
+        EVP_CIPHER_CTX_init(&dctx->cipher);
+        ret = EVP_CIPHER_CTX_copy(&dctx->cipher, &ctx->cipher);
+        if (ret)
+            dbio->init = 1;
+        break;
+    default:
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    }
+    return (ret);
+}
+
+static long enc_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);
+}
+
+/*-
+void BIO_set_cipher_ctx(b,c)
+BIO *b;
+EVP_CIPHER_ctx *c;
+        {
+        if (b == NULL) return;
+
+        if ((b->callback != NULL) &&
+                (b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,0L) <= 0))
+                return;
+
+        b->init=1;
+        ctx=(BIO_ENC_CTX *)b->ptr;
+        memcpy(ctx->cipher,c,sizeof(EVP_CIPHER_CTX));
+
+        if (b->callback != NULL)
+                b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L);
+        }
+*/
+
+void BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,
+                    const unsigned char *i, int e)
+{
+    BIO_ENC_CTX *ctx;
+
+    if (b == NULL)
+        return;
+
+    if ((b->callback != NULL) &&
+        (b->callback(b, BIO_CB_CTRL, (const char *)c, BIO_CTRL_SET, e, 0L) <=
+         0))
+        return;
+
+    b->init = 1;
+    ctx = (BIO_ENC_CTX *)b->ptr;
+    EVP_CipherInit_ex(&(ctx->cipher), c, NULL, k, i, e);
+
+    if (b->callback != NULL)
+        b->callback(b, BIO_CB_CTRL, (const char *)c, BIO_CTRL_SET, e, 1L);
+}