-/* crypto/bio/bf_buff.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. 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.]
+ * Licensed under the Apache License 2.0 (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 "cryptlib.h"
-#include <openssl/bio.h>
-#include <openssl/evp.h>
+#include "bio_local.h"
+#include "internal/cryptlib.h"
-static int buffer_write(BIO *h, const char *buf,int num);
+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 1024
-
-static 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,
- };
-
-BIO_METHOD *BIO_f_buffer(void)
- {
- return(&methods_buffer);
- }
+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",
+ /* TODO: Convert to new style write function */
+ bwrite_conv,
+ buffer_write,
+ /* TODO: Convert to new style read function */
+ bread_conv,
+ 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;
-
- ctx=(BIO_F_BUFFER_CTX *)OPENSSL_malloc(sizeof(BIO_F_BUFFER_CTX));
- if (ctx == NULL) return(0);
- ctx->ibuf=(char *)OPENSSL_malloc(DEFAULT_BUFFER_SIZE);
- if (ctx->ibuf == NULL) { OPENSSL_free(ctx); return(0); }
- ctx->obuf=(char *)OPENSSL_malloc(DEFAULT_BUFFER_SIZE);
- if (ctx->obuf == NULL) { OPENSSL_free(ctx->ibuf); OPENSSL_free(ctx); return(0); }
- ctx->ibuf_size=DEFAULT_BUFFER_SIZE;
- ctx->obuf_size=DEFAULT_BUFFER_SIZE;
- ctx->ibuf_len=0;
- ctx->ibuf_off=0;
- ctx->obuf_len=0;
- ctx->obuf_off=0;
-
- bi->init=1;
- bi->ptr=(char *)ctx;
- bi->flags=0;
- return(1);
- }
+{
+ 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;
- if (b->ibuf != NULL) OPENSSL_free(b->ibuf);
- if (b->obuf != NULL) OPENSSL_free(b->obuf);
- OPENSSL_free(a->ptr);
- a->ptr=NULL;
- a->init=0;
- a->flags=0;
- return(1);
- }
-
+{
+ 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;
- }
+{
+ 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_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_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;
- }
+{
+ 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=ctx->ibuf_off; i<ctx->ibuf_len; i++)
- {
- if (p1[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;
- if (ctx->ibuf != NULL) 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=(char *)OPENSSL_malloc((int)num);
- if (p1 == NULL) goto malloc_error;
- }
- if ((obs > DEFAULT_BUFFER_SIZE) && (obs != ctx->obuf_size))
- {
- p2=(char *)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 > ctx->obuf_off)
- {
- r=BIO_write(b->next_bio,
- &(ctx->obuf[ctx->obuf_off]),
- ctx->obuf_len-ctx->obuf_off);
-#if 0
-fprintf(stderr,"FLUSH [%3d] %3d -> %3d\n",ctx->obuf_off,ctx->obuf_len-ctx->obuf_off,r);
-#endif
- BIO_copy_next_retry(b);
- if (r <= 0) return((long)r);
- ctx->obuf_off+=r;
- }
- else
- {
- ctx->obuf_len=0;
- ctx->obuf_off=0;
- ret=1;
- 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);
- }
+{
+ 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_EOF:
+ if (ctx->ibuf_len > 0)
+ 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;
+ case BIO_CTRL_PEEK:
+ /* Ensure there's stuff in the input buffer */
+ {
+ char fake_buf[1];
+ (void)buffer_read(b, fake_buf, 0);
+ }
+ if (num > ctx->ibuf_len)
+ num = ctx->ibuf_len;
+ memcpy(ptr, &(ctx->ibuf[ctx->ibuf_off]), num);
+ ret = num;
+ 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)
+{
+ if (b->next_bio == NULL)
+ return 0;
+ return BIO_callback_ctrl(b->next_bio, cmd, fp);
+}
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) || (i == size))
- {
- *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);
- if (i < 0) return((num > 0)?num:i);
- if (i == 0) return(num);
- }
- ctx->ibuf_len=i;
- ctx->ibuf_off=0;
- }
- }
- }
+{
+ 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)));
- }
-
+{
+ return buffer_write(b, str, strlen(str));
+}
projects / openssl.git / blobdiff