initial/final commitHEADmaster

1 files changed, 455 insertions, 0 deletions

diff --git a/openssl-1.1.0h/crypto/bio/bf_buff.c b/openssl-1.1.0h/crypto/bio/bf_buff.c
new file mode 100644
index 0000000..8509956
--- /dev/null
+++ b/openssl-1.1.0h/crypto/bio/bf_buff.c
@@ -0,0 +1,455 @@
+/*
+ * 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 <stdio.h>
+#include <errno.h>
+#include "bio_lcl.h"
+#include "internal/cryptlib.h"
+
+static int buffer_write(BIO *h, const char *buf, int num);
+static int buffer_read(BIO *h, char *buf, int size);
+static int buffer_puts(BIO *h, const char *str);
+static int buffer_gets(BIO *h, char *str, int size);
+static long buffer_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int buffer_new(BIO *h);
+static int buffer_free(BIO *data);
+static long buffer_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
+#define DEFAULT_BUFFER_SIZE     4096
+
+static const BIO_METHOD methods_buffer = {
+    BIO_TYPE_BUFFER,
+    "buffer",
+    buffer_write,
+    buffer_read,
+    buffer_puts,
+    buffer_gets,
+    buffer_ctrl,
+    buffer_new,
+    buffer_free,
+    buffer_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_f_buffer(void)
+{
+    return (&methods_buffer);
+}
+
+static int buffer_new(BIO *bi)
+{
+    BIO_F_BUFFER_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
+
+    if (ctx == NULL)
+        return (0);
+    ctx->ibuf_size = DEFAULT_BUFFER_SIZE;
+    ctx->ibuf = OPENSSL_malloc(DEFAULT_BUFFER_SIZE);
+    if (ctx->ibuf == NULL) {
+        OPENSSL_free(ctx);
+        return (0);
+    }
+    ctx->obuf_size = DEFAULT_BUFFER_SIZE;
+    ctx->obuf = OPENSSL_malloc(DEFAULT_BUFFER_SIZE);
+    if (ctx->obuf == NULL) {
+        OPENSSL_free(ctx->ibuf);
+        OPENSSL_free(ctx);
+        return (0);
+    }
+
+    bi->init = 1;
+    bi->ptr = (char *)ctx;
+    bi->flags = 0;
+    return (1);
+}
+
+static int buffer_free(BIO *a)
+{
+    BIO_F_BUFFER_CTX *b;
+
+    if (a == NULL)
+        return (0);
+    b = (BIO_F_BUFFER_CTX *)a->ptr;
+    OPENSSL_free(b->ibuf);
+    OPENSSL_free(b->obuf);
+    OPENSSL_free(a->ptr);
+    a->ptr = NULL;
+    a->init = 0;
+    a->flags = 0;
+    return (1);
+}
+
+static int buffer_read(BIO *b, char *out, int outl)
+{
+    int i, num = 0;
+    BIO_F_BUFFER_CTX *ctx;
+
+    if (out == NULL)
+        return (0);
+    ctx = (BIO_F_BUFFER_CTX *)b->ptr;
+
+    if ((ctx == NULL) || (b->next_bio == NULL))
+        return (0);
+    num = 0;
+    BIO_clear_retry_flags(b);
+
+ start:
+    i = ctx->ibuf_len;
+    /* If there is stuff left over, grab it */
+    if (i != 0) {
+        if (i > outl)
+            i = outl;
+        memcpy(out, &(ctx->ibuf[ctx->ibuf_off]), i);
+        ctx->ibuf_off += i;
+        ctx->ibuf_len -= i;
+        num += i;
+        if (outl == i)
+            return (num);
+        outl -= i;
+        out += i;
+    }
+
+    /*
+     * We may have done a partial read. try to do more. We have nothing in
+     * the buffer. If we get an error and have read some data, just return it
+     * and let them retry to get the error again. copy direct to parent
+     * address space
+     */
+    if (outl > ctx->ibuf_size) {
+        for (;;) {
+            i = BIO_read(b->next_bio, out, outl);
+            if (i <= 0) {
+                BIO_copy_next_retry(b);
+                if (i < 0)
+                    return ((num > 0) ? num : i);
+                if (i == 0)
+                    return (num);
+            }
+            num += i;
+            if (outl == i)
+                return (num);
+            out += i;
+            outl -= i;
+        }
+    }
+    /* else */
+
+    /* we are going to be doing some buffering */
+    i = BIO_read(b->next_bio, ctx->ibuf, ctx->ibuf_size);
+    if (i <= 0) {
+        BIO_copy_next_retry(b);
+        if (i < 0)
+            return ((num > 0) ? num : i);
+        if (i == 0)
+            return (num);
+    }
+    ctx->ibuf_off = 0;
+    ctx->ibuf_len = i;
+
+    /* Lets re-read using ourselves :-) */
+    goto start;
+}
+
+static int buffer_write(BIO *b, const char *in, int inl)
+{
+    int i, num = 0;
+    BIO_F_BUFFER_CTX *ctx;
+
+    if ((in == NULL) || (inl <= 0))
+        return (0);
+    ctx = (BIO_F_BUFFER_CTX *)b->ptr;
+    if ((ctx == NULL) || (b->next_bio == NULL))
+        return (0);
+
+    BIO_clear_retry_flags(b);
+ start:
+    i = ctx->obuf_size - (ctx->obuf_len + ctx->obuf_off);
+    /* add to buffer and return */
+    if (i >= inl) {
+        memcpy(&(ctx->obuf[ctx->obuf_off + ctx->obuf_len]), in, inl);
+        ctx->obuf_len += inl;
+        return (num + inl);
+    }
+    /* else */
+    /* stuff already in buffer, so add to it first, then flush */
+    if (ctx->obuf_len != 0) {
+        if (i > 0) {            /* lets fill it up if we can */
+            memcpy(&(ctx->obuf[ctx->obuf_off + ctx->obuf_len]), in, i);
+            in += i;
+            inl -= i;
+            num += i;
+            ctx->obuf_len += i;
+        }
+        /* we now have a full buffer needing flushing */
+        for (;;) {
+            i = BIO_write(b->next_bio, &(ctx->obuf[ctx->obuf_off]),
+                          ctx->obuf_len);
+            if (i <= 0) {
+                BIO_copy_next_retry(b);
+
+                if (i < 0)
+                    return ((num > 0) ? num : i);
+                if (i == 0)
+                    return (num);
+            }
+            ctx->obuf_off += i;
+            ctx->obuf_len -= i;
+            if (ctx->obuf_len == 0)
+                break;
+        }
+    }
+    /*
+     * we only get here if the buffer has been flushed and we still have
+     * stuff to write
+     */
+    ctx->obuf_off = 0;
+
+    /* we now have inl bytes to write */
+    while (inl >= ctx->obuf_size) {
+        i = BIO_write(b->next_bio, in, inl);
+        if (i <= 0) {
+            BIO_copy_next_retry(b);
+            if (i < 0)
+                return ((num > 0) ? num : i);
+            if (i == 0)
+                return (num);
+        }
+        num += i;
+        in += i;
+        inl -= i;
+        if (inl == 0)
+            return (num);
+    }
+
+    /*
+     * copy the rest into the buffer since we have only a small amount left
+     */
+    goto start;
+}
+
+static long buffer_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+    BIO *dbio;
+    BIO_F_BUFFER_CTX *ctx;
+    long ret = 1;
+    char *p1, *p2;
+    int r, i, *ip;
+    int ibs, obs;
+
+    ctx = (BIO_F_BUFFER_CTX *)b->ptr;
+
+    switch (cmd) {
+    case BIO_CTRL_RESET:
+        ctx->ibuf_off = 0;
+        ctx->ibuf_len = 0;
+        ctx->obuf_off = 0;
+        ctx->obuf_len = 0;
+        if (b->next_bio == NULL)
+            return (0);
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_CTRL_INFO:
+        ret = (long)ctx->obuf_len;
+        break;
+    case BIO_C_GET_BUFF_NUM_LINES:
+        ret = 0;
+        p1 = ctx->ibuf;
+        for (i = 0; i < ctx->ibuf_len; i++) {
+            if (p1[ctx->ibuf_off + i] == '\n')
+                ret++;
+        }
+        break;
+    case BIO_CTRL_WPENDING:
+        ret = (long)ctx->obuf_len;
+        if (ret == 0) {
+            if (b->next_bio == NULL)
+                return (0);
+            ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        }
+        break;
+    case BIO_CTRL_PENDING:
+        ret = (long)ctx->ibuf_len;
+        if (ret == 0) {
+            if (b->next_bio == NULL)
+                return (0);
+            ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        }
+        break;
+    case BIO_C_SET_BUFF_READ_DATA:
+        if (num > ctx->ibuf_size) {
+            p1 = OPENSSL_malloc((int)num);
+            if (p1 == NULL)
+                goto malloc_error;
+            OPENSSL_free(ctx->ibuf);
+            ctx->ibuf = p1;
+        }
+        ctx->ibuf_off = 0;
+        ctx->ibuf_len = (int)num;
+        memcpy(ctx->ibuf, ptr, (int)num);
+        ret = 1;
+        break;
+    case BIO_C_SET_BUFF_SIZE:
+        if (ptr != NULL) {
+            ip = (int *)ptr;
+            if (*ip == 0) {
+                ibs = (int)num;
+                obs = ctx->obuf_size;
+            } else {            /* if (*ip == 1) */
+
+                ibs = ctx->ibuf_size;
+                obs = (int)num;
+            }
+        } else {
+            ibs = (int)num;
+            obs = (int)num;
+        }
+        p1 = ctx->ibuf;
+        p2 = ctx->obuf;
+        if ((ibs > DEFAULT_BUFFER_SIZE) && (ibs != ctx->ibuf_size)) {
+            p1 = OPENSSL_malloc((int)num);
+            if (p1 == NULL)
+                goto malloc_error;
+        }
+        if ((obs > DEFAULT_BUFFER_SIZE) && (obs != ctx->obuf_size)) {
+            p2 = OPENSSL_malloc((int)num);
+            if (p2 == NULL) {
+                if (p1 != ctx->ibuf)
+                    OPENSSL_free(p1);
+                goto malloc_error;
+            }
+        }
+        if (ctx->ibuf != p1) {
+            OPENSSL_free(ctx->ibuf);
+            ctx->ibuf = p1;
+            ctx->ibuf_off = 0;
+            ctx->ibuf_len = 0;
+            ctx->ibuf_size = ibs;
+        }
+        if (ctx->obuf != p2) {
+            OPENSSL_free(ctx->obuf);
+            ctx->obuf = p2;
+            ctx->obuf_off = 0;
+            ctx->obuf_len = 0;
+            ctx->obuf_size = obs;
+        }
+        break;
+    case BIO_C_DO_STATE_MACHINE:
+        if (b->next_bio == NULL)
+            return (0);
+        BIO_clear_retry_flags(b);
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        BIO_copy_next_retry(b);
+        break;
+
+    case BIO_CTRL_FLUSH:
+        if (b->next_bio == NULL)
+            return (0);
+        if (ctx->obuf_len <= 0) {
+            ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+            break;
+        }
+
+        for (;;) {
+            BIO_clear_retry_flags(b);
+            if (ctx->obuf_len > 0) {
+                r = BIO_write(b->next_bio,
+                              &(ctx->obuf[ctx->obuf_off]), ctx->obuf_len);
+                BIO_copy_next_retry(b);
+                if (r <= 0)
+                    return ((long)r);
+                ctx->obuf_off += r;
+                ctx->obuf_len -= r;
+            } else {
+                ctx->obuf_len = 0;
+                ctx->obuf_off = 0;
+                break;
+            }
+        }
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    case BIO_CTRL_DUP:
+        dbio = (BIO *)ptr;
+        if (!BIO_set_read_buffer_size(dbio, ctx->ibuf_size) ||
+            !BIO_set_write_buffer_size(dbio, ctx->obuf_size))
+            ret = 0;
+        break;
+    default:
+        if (b->next_bio == NULL)
+            return (0);
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        break;
+    }
+    return (ret);
+ malloc_error:
+    BIOerr(BIO_F_BUFFER_CTRL, ERR_R_MALLOC_FAILURE);
+    return (0);
+}
+
+static long buffer_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 buffer_gets(BIO *b, char *buf, int size)
+{
+    BIO_F_BUFFER_CTX *ctx;
+    int num = 0, i, flag;
+    char *p;
+
+    ctx = (BIO_F_BUFFER_CTX *)b->ptr;
+    size--;                     /* reserve space for a '\0' */
+    BIO_clear_retry_flags(b);
+
+    for (;;) {
+        if (ctx->ibuf_len > 0) {
+            p = &(ctx->ibuf[ctx->ibuf_off]);
+            flag = 0;
+            for (i = 0; (i < ctx->ibuf_len) && (i < size); i++) {
+                *(buf++) = p[i];
+                if (p[i] == '\n') {
+                    flag = 1;
+                    i++;
+                    break;
+                }
+            }
+            num += i;
+            size -= i;
+            ctx->ibuf_len -= i;
+            ctx->ibuf_off += i;
+            if (flag || size == 0) {
+                *buf = '\0';
+                return (num);
+            }
+        } else {                /* read another chunk */
+
+            i = BIO_read(b->next_bio, ctx->ibuf, ctx->ibuf_size);
+            if (i <= 0) {
+                BIO_copy_next_retry(b);
+                *buf = '\0';
+                if (i < 0)
+                    return ((num > 0) ? num : i);
+                if (i == 0)
+                    return (num);
+            }
+            ctx->ibuf_len = i;
+            ctx->ibuf_off = 0;
+        }
+    }
+}
+
+static int buffer_puts(BIO *b, const char *str)
+{
+    return (buffer_write(b, str, strlen(str)));
+}