-/* crypto/bio/bio_lib.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.
+/*
+ * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
*
- * 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
*/
+#define OPENSSL_SUPPRESS_DEPRECATED
+
#include <stdio.h>
#include <errno.h>
#include <openssl/crypto.h>
-#include "cryptlib.h"
-#include <openssl/bio.h>
-#include <openssl/stack.h>
+#include "internal/numbers.h"
+#include "bio_local.h"
+
+/*
+ * Helper macro for the callback to determine whether an operator expects a
+ * len parameter or not
+ */
+#define HAS_LEN_OPER(o) ((o) == BIO_CB_READ || (o) == BIO_CB_WRITE \
+ || (o) == BIO_CB_GETS)
-BIO *BIO_new(BIO_METHOD *method)
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+# define HAS_CALLBACK(b) ((b)->callback != NULL || (b)->callback_ex != NULL)
+#else
+# define HAS_CALLBACK(b) ((b)->callback_ex != NULL)
+#endif
+/*
+ * Helper function to work out whether to call the new style callback or the old
+ * one, and translate between the two.
+ *
+ * This has a long return type for consistency with the old callback. Similarly
+ * for the "long" used for "inret"
+ */
+static long bio_call_callback(BIO *b, int oper, const char *argp, size_t len,
+ int argi, long argl, long inret,
+ size_t *processed)
{
- BIO *ret = NULL;
+ long ret = inret;
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+ int bareoper;
- ret = OPENSSL_malloc(sizeof(BIO));
- if (ret == NULL) {
- BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE);
- return (NULL);
+ if (b->callback_ex != NULL)
+#endif
+ return b->callback_ex(b, oper, argp, len, argi, argl, inret, processed);
+
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+ /* Strip off any BIO_CB_RETURN flag */
+ bareoper = oper & ~BIO_CB_RETURN;
+
+ /*
+ * We have an old style callback, so we will have to do nasty casts and
+ * check for overflows.
+ */
+ if (HAS_LEN_OPER(bareoper)) {
+ /* In this case |len| is set, and should be used instead of |argi| */
+ if (len > INT_MAX)
+ return -1;
+
+ argi = (int)len;
}
- if (!BIO_set(ret, method)) {
- OPENSSL_free(ret);
- ret = NULL;
+
+ if (inret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
+ if (*processed > INT_MAX)
+ return -1;
+ inret = *processed;
}
- return (ret);
+
+ ret = b->callback(b, oper, argp, argi, argl, inret);
+
+ if (ret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
+ *processed = (size_t)ret;
+ ret = 1;
+ }
+#endif
+ return ret;
}
-int BIO_set(BIO *bio, BIO_METHOD *method)
+BIO *BIO_new_ex(OSSL_LIB_CTX *libctx, const BIO_METHOD *method)
{
+ BIO *bio = OPENSSL_zalloc(sizeof(*bio));
+
+ if (bio == NULL)
+ return NULL;
+
+ bio->libctx = libctx;
bio->method = method;
- bio->callback = NULL;
- bio->cb_arg = NULL;
- bio->init = 0;
bio->shutdown = 1;
- bio->flags = 0;
- bio->retry_reason = 0;
- bio->num = 0;
- bio->ptr = NULL;
- bio->prev_bio = NULL;
- bio->next_bio = NULL;
- bio->references = 1;
- bio->num_read = 0L;
- bio->num_write = 0L;
- CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
- if (method->create != NULL)
- if (!method->create(bio)) {
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
- return (0);
- }
- return (1);
+
+ if (!CRYPTO_NEW_REF(&bio->references, 1))
+ goto err;
+
+ if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data))
+ goto err;
+
+ if (method->create != NULL && !method->create(bio)) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_INIT_FAIL);
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+ goto err;
+ }
+ if (method->create == NULL)
+ bio->init = 1;
+
+ return bio;
+
+err:
+ CRYPTO_FREE_REF(&bio->references);
+ OPENSSL_free(bio);
+ return NULL;
+}
+
+BIO *BIO_new(const BIO_METHOD *method)
+{
+ return BIO_new_ex(NULL, method);
}
int BIO_free(BIO *a)
{
- int i;
+ int ret;
if (a == NULL)
- return (0);
+ return 0;
- i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_BIO);
-#ifdef REF_PRINT
- REF_PRINT("BIO", a);
-#endif
- if (i > 0)
- return (1);
-#ifdef REF_CHECK
- if (i < 0) {
- fprintf(stderr, "BIO_free, bad reference count\n");
- abort();
- }
-#endif
- if ((a->callback != NULL) &&
- ((i = (int)a->callback(a, BIO_CB_FREE, NULL, 0, 0L, 1L)) <= 0))
- return (i);
+ if (CRYPTO_DOWN_REF(&a->references, &ret) <= 0)
+ return 0;
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data);
+ REF_PRINT_COUNT("BIO", a);
+ if (ret > 0)
+ return 1;
+ REF_ASSERT_ISNT(ret < 0);
+
+ if (HAS_CALLBACK(a)) {
+ ret = (int)bio_call_callback(a, BIO_CB_FREE, NULL, 0, 0, 0L, 1L, NULL);
+ if (ret <= 0)
+ return 0;
+ }
if ((a->method != NULL) && (a->method->destroy != NULL))
a->method->destroy(a);
+
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data);
+
+ CRYPTO_FREE_REF(&a->references);
+
OPENSSL_free(a);
- return (1);
+
+ return 1;
+}
+
+void BIO_set_data(BIO *a, void *ptr)
+{
+ a->ptr = ptr;
+}
+
+void *BIO_get_data(BIO *a)
+{
+ return a->ptr;
+}
+
+void BIO_set_init(BIO *a, int init)
+{
+ a->init = init;
+}
+
+int BIO_get_init(BIO *a)
+{
+ return a->init;
+}
+
+void BIO_set_shutdown(BIO *a, int shut)
+{
+ a->shutdown = shut;
+}
+
+int BIO_get_shutdown(BIO *a)
+{
+ return a->shutdown;
}
void BIO_vfree(BIO *a)
BIO_free(a);
}
+int BIO_up_ref(BIO *a)
+{
+ int i;
+
+ if (CRYPTO_UP_REF(&a->references, &i) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("BIO", a);
+ REF_ASSERT_ISNT(i < 2);
+ return i > 1;
+}
+
void BIO_clear_flags(BIO *b, int flags)
{
b->flags &= ~flags;
b->flags |= flags;
}
-long (*BIO_get_callback(const BIO *b)) (struct bio_st *, int, const char *,
- int, long, long) {
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+BIO_callback_fn BIO_get_callback(const BIO *b)
+{
return b->callback;
}
-void BIO_set_callback(BIO *b,
- long (*cb) (struct bio_st *, int, const char *, int,
- long, long))
+void BIO_set_callback(BIO *b, BIO_callback_fn cb)
{
b->callback = cb;
}
+#endif
+
+BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b)
+{
+ return b->callback_ex;
+}
+
+void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex cb)
+{
+ b->callback_ex = cb;
+}
void BIO_set_callback_arg(BIO *b, char *arg)
{
return b->method->type;
}
-int BIO_read(BIO *b, void *out, int outl)
+/*
+ * This is essentially the same as BIO_read_ex() except that it allows
+ * 0 or a negative value to indicate failure (retryable or not) in the return.
+ * This is for compatibility with the old style BIO_read(), where existing code
+ * may make assumptions about the return value that it might get.
+ */
+static int bio_read_intern(BIO *b, void *data, size_t dlen, size_t *readbytes)
{
- int i;
- long (*cb) (BIO *, int, const char *, int, long, long);
+ int ret;
- if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) {
- BIOerr(BIO_F_BIO_READ, BIO_R_UNSUPPORTED_METHOD);
- return (-2);
+ if (b == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return -1;
+ }
+ if (b->method == NULL || b->method->bread == NULL) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
}
- cb = b->callback;
- if ((cb != NULL) &&
- ((i = (int)cb(b, BIO_CB_READ, out, outl, 0L, 1L)) <= 0))
- return (i);
+ if (HAS_CALLBACK(b) &&
+ ((ret = (int)bio_call_callback(b, BIO_CB_READ, data, dlen, 0, 0L, 1L,
+ NULL)) <= 0))
+ return ret;
if (!b->init) {
- BIOerr(BIO_F_BIO_READ, BIO_R_UNINITIALIZED);
- return (-2);
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return -1;
}
- i = b->method->bread(b, out, outl);
+ ret = b->method->bread(b, data, dlen, readbytes);
+
+ if (ret > 0)
+ b->num_read += (uint64_t)*readbytes;
- if (i > 0)
- b->num_read += (unsigned long)i;
+ if (HAS_CALLBACK(b))
+ ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN, data,
+ dlen, 0, 0L, ret, readbytes);
- if (cb != NULL)
- i = (int)cb(b, BIO_CB_READ | BIO_CB_RETURN, out, outl, 0L, (long)i);
- return (i);
+ /* Shouldn't happen */
+ if (ret > 0 && *readbytes > dlen) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_INTERNAL_ERROR);
+ return -1;
+ }
+
+ return ret;
}
-int BIO_write(BIO *b, const void *in, int inl)
+int BIO_read(BIO *b, void *data, int dlen)
{
- int i;
- long (*cb) (BIO *, int, const char *, int, long, long);
+ size_t readbytes;
+ int ret;
+
+ if (dlen < 0)
+ return 0;
+
+ ret = bio_read_intern(b, data, (size_t)dlen, &readbytes);
+
+ if (ret > 0) {
+ /* *readbytes should always be <= dlen */
+ ret = (int)readbytes;
+ }
+ return ret;
+}
+
+int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes)
+{
+ return bio_read_intern(b, data, dlen, readbytes) > 0;
+}
+
+static int bio_write_intern(BIO *b, const void *data, size_t dlen,
+ size_t *written)
+{
+ size_t local_written;
+ int ret;
+
+ if (written != NULL)
+ *written = 0;
+ /*
+ * b == NULL is not an error but just means that zero bytes are written.
+ * Do not raise an error here.
+ */
if (b == NULL)
- return (0);
+ return 0;
- cb = b->callback;
- if ((b->method == NULL) || (b->method->bwrite == NULL)) {
- BIOerr(BIO_F_BIO_WRITE, BIO_R_UNSUPPORTED_METHOD);
- return (-2);
+ if (b->method == NULL || b->method->bwrite == NULL) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
}
- if ((cb != NULL) &&
- ((i = (int)cb(b, BIO_CB_WRITE, in, inl, 0L, 1L)) <= 0))
- return (i);
+ if (HAS_CALLBACK(b) &&
+ ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, dlen, 0, 0L, 1L,
+ NULL)) <= 0))
+ return ret;
if (!b->init) {
- BIOerr(BIO_F_BIO_WRITE, BIO_R_UNINITIALIZED);
- return (-2);
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return -1;
}
- i = b->method->bwrite(b, in, inl);
+ ret = b->method->bwrite(b, data, dlen, &local_written);
- if (i > 0)
- b->num_write += (unsigned long)i;
+ if (ret > 0)
+ b->num_write += (uint64_t)local_written;
- if (cb != NULL)
- i = (int)cb(b, BIO_CB_WRITE | BIO_CB_RETURN, in, inl, 0L, (long)i);
- return (i);
+ if (HAS_CALLBACK(b))
+ ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data,
+ dlen, 0, 0L, ret, &local_written);
+
+ if (written != NULL)
+ *written = local_written;
+ return ret;
}
-int BIO_puts(BIO *b, const char *in)
+int BIO_write(BIO *b, const void *data, int dlen)
{
- int i;
- long (*cb) (BIO *, int, const char *, int, long, long);
+ size_t written;
+ int ret;
+
+ if (dlen <= 0)
+ return 0;
+
+ ret = bio_write_intern(b, data, (size_t)dlen, &written);
+
+ if (ret > 0) {
+ /* written should always be <= dlen */
+ ret = (int)written;
+ }
+
+ return ret;
+}
+
+int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written)
+{
+ return bio_write_intern(b, data, dlen, written) > 0
+ || (b != NULL && dlen == 0); /* order is important for *written */
+}
+
+int BIO_sendmmsg(BIO *b, BIO_MSG *msg,
+ size_t stride, size_t num_msg, uint64_t flags,
+ size_t *msgs_processed)
+{
+ size_t ret;
+ BIO_MMSG_CB_ARGS args;
- if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) {
- BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD);
- return (-2);
+ if (b == NULL) {
+ *msgs_processed = 0;
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
}
- cb = b->callback;
+ if (b->method == NULL || b->method->bsendmmsg == NULL) {
+ *msgs_processed = 0;
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return 0;
+ }
+
+ if (HAS_CALLBACK(b)) {
+ args.msg = msg;
+ args.stride = stride;
+ args.num_msg = num_msg;
+ args.flags = flags;
+ args.msgs_processed = msgs_processed;
- if ((cb != NULL) && ((i = (int)cb(b, BIO_CB_PUTS, in, 0, 0L, 1L)) <= 0))
- return (i);
+ ret = (size_t)bio_call_callback(b, BIO_CB_SENDMMSG, (void *)&args,
+ 0, 0, 0, 1, NULL);
+ if (ret <= 0)
+ return 0;
+ }
if (!b->init) {
- BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED);
- return (-2);
+ *msgs_processed = 0;
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return 0;
}
- i = b->method->bputs(b, in);
+ ret = b->method->bsendmmsg(b, msg, stride, num_msg, flags, msgs_processed);
- if (i > 0)
- b->num_write += (unsigned long)i;
+ if (HAS_CALLBACK(b))
+ ret = (size_t)bio_call_callback(b, BIO_CB_SENDMMSG | BIO_CB_RETURN,
+ (void *)&args, ret, 0, 0, ret, NULL);
- if (cb != NULL)
- i = (int)cb(b, BIO_CB_PUTS | BIO_CB_RETURN, in, 0, 0L, (long)i);
- return (i);
+ return ret;
}
-int BIO_gets(BIO *b, char *in, int inl)
+int BIO_recvmmsg(BIO *b, BIO_MSG *msg,
+ size_t stride, size_t num_msg, uint64_t flags,
+ size_t *msgs_processed)
{
- int i;
- long (*cb) (BIO *, int, const char *, int, long, long);
+ size_t ret;
+ BIO_MMSG_CB_ARGS args;
+
+ if (b == NULL) {
+ *msgs_processed = 0;
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
+ if (b->method == NULL || b->method->brecvmmsg == NULL) {
+ *msgs_processed = 0;
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return 0;
+ }
+
+ if (HAS_CALLBACK(b)) {
+ args.msg = msg;
+ args.stride = stride;
+ args.num_msg = num_msg;
+ args.flags = flags;
+ args.msgs_processed = msgs_processed;
+
+ ret = bio_call_callback(b, BIO_CB_RECVMMSG, (void *)&args,
+ 0, 0, 0, 1, NULL);
+ if (ret <= 0)
+ return 0;
+ }
- if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) {
- BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD);
- return (-2);
+ if (!b->init) {
+ *msgs_processed = 0;
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return 0;
}
- cb = b->callback;
+ ret = b->method->brecvmmsg(b, msg, stride, num_msg, flags, msgs_processed);
+
+ if (HAS_CALLBACK(b))
+ ret = (size_t)bio_call_callback(b, BIO_CB_RECVMMSG | BIO_CB_RETURN,
+ (void *)&args, ret, 0, 0, ret, NULL);
+
+ return ret;
+}
+
+int BIO_get_rpoll_descriptor(BIO *b, BIO_POLL_DESCRIPTOR *desc)
+{
+ return BIO_ctrl(b, BIO_CTRL_GET_RPOLL_DESCRIPTOR, 0, desc);
+}
+
+int BIO_get_wpoll_descriptor(BIO *b, BIO_POLL_DESCRIPTOR *desc)
+{
+ return BIO_ctrl(b, BIO_CTRL_GET_WPOLL_DESCRIPTOR, 0, desc);
+}
+
+int BIO_puts(BIO *b, const char *buf)
+{
+ int ret;
+ size_t written = 0;
- if ((cb != NULL) && ((i = (int)cb(b, BIO_CB_GETS, in, inl, 0L, 1L)) <= 0))
- return (i);
+ if (b == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return -1;
+ }
+ if (b->method == NULL || b->method->bputs == NULL) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (HAS_CALLBACK(b)) {
+ ret = (int)bio_call_callback(b, BIO_CB_PUTS, buf, 0, 0, 0L, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
if (!b->init) {
- BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED);
- return (-2);
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return -1;
+ }
+
+ ret = b->method->bputs(b, buf);
+
+ if (ret > 0) {
+ b->num_write += (uint64_t)ret;
+ written = ret;
+ ret = 1;
}
- i = b->method->bgets(b, in, inl);
+ if (HAS_CALLBACK(b))
+ ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN, buf, 0, 0,
+ 0L, ret, &written);
- if (cb != NULL)
- i = (int)cb(b, BIO_CB_GETS | BIO_CB_RETURN, in, inl, 0L, (long)i);
- return (i);
+ if (ret > 0) {
+ if (written > INT_MAX) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_LENGTH_TOO_LONG);
+ ret = -1;
+ } else {
+ ret = (int)written;
+ }
+ }
+
+ return ret;
+}
+
+int BIO_gets(BIO *b, char *buf, int size)
+{
+ int ret;
+ size_t readbytes = 0;
+
+ if (b == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return -1;
+ }
+ if (b->method == NULL || b->method->bgets == NULL) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (size < 0) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_INVALID_ARGUMENT);
+ return -1;
+ }
+
+ if (HAS_CALLBACK(b)) {
+ ret = (int)bio_call_callback(b, BIO_CB_GETS, buf, size, 0, 0L, 1, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ if (!b->init) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return -1;
+ }
+
+ ret = b->method->bgets(b, buf, size);
+
+ if (ret > 0) {
+ readbytes = ret;
+ ret = 1;
+ }
+
+ if (HAS_CALLBACK(b))
+ ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, buf, size,
+ 0, 0L, ret, &readbytes);
+
+ if (ret > 0) {
+ /* Shouldn't happen */
+ if (readbytes > (size_t)size)
+ ret = -1;
+ else
+ ret = (int)readbytes;
+ }
+
+ return ret;
+}
+
+int BIO_get_line(BIO *bio, char *buf, int size)
+{
+ int ret = 0;
+ char *ptr = buf;
+
+ if (buf == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return -1;
+ }
+ if (size <= 0) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_INVALID_ARGUMENT);
+ return -1;
+ }
+ *buf = '\0';
+
+ if (bio == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return -1;
+ }
+ if (!bio->init) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNINITIALIZED);
+ return -1;
+ }
+
+ while (size-- > 1 && (ret = BIO_read(bio, ptr, 1)) > 0)
+ if (*ptr++ == '\n')
+ break;
+ *ptr = '\0';
+ return ret > 0 || BIO_eof(bio) ? ptr - buf : ret;
}
int BIO_indent(BIO *b, int indent, int max)
int i;
i = iarg;
- return (BIO_ctrl(b, cmd, larg, (char *)&i));
+ return BIO_ctrl(b, cmd, larg, (char *)&i);
}
-char *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
+void *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
{
- char *p = NULL;
+ void *p = NULL;
if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0)
- return (NULL);
+ return NULL;
else
- return (p);
+ return p;
}
long BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
{
long ret;
- long (*cb) (BIO *, int, const char *, int, long, long);
if (b == NULL)
- return (0);
-
- if ((b->method == NULL) || (b->method->ctrl == NULL)) {
- BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD);
- return (-2);
+ return -1;
+ if (b->method == NULL || b->method->ctrl == NULL) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
}
- cb = b->callback;
-
- if ((cb != NULL) &&
- ((ret = cb(b, BIO_CB_CTRL, parg, cmd, larg, 1L)) <= 0))
- return (ret);
+ if (HAS_CALLBACK(b)) {
+ ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
ret = b->method->ctrl(b, cmd, larg, parg);
- if (cb != NULL)
- ret = cb(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, cmd, larg, ret);
- return (ret);
+ if (HAS_CALLBACK(b))
+ ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd,
+ larg, ret, NULL);
+
+ return ret;
}
-long BIO_callback_ctrl(BIO *b, int cmd,
- void (*fp) (struct bio_st *, int, const char *, int,
- long, long))
+long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
{
long ret;
- long (*cb) (BIO *, int, const char *, int, long, long);
if (b == NULL)
- return (0);
-
- if ((b->method == NULL) || (b->method->callback_ctrl == NULL)) {
- BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD);
- return (-2);
+ return -2;
+ if (b->method == NULL || b->method->callback_ctrl == NULL
+ || cmd != BIO_CTRL_SET_CALLBACK) {
+ ERR_raise(ERR_LIB_BIO, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
}
- cb = b->callback;
-
- if ((cb != NULL) &&
- ((ret = cb(b, BIO_CB_CTRL, (void *)&fp, cmd, 0, 1L)) <= 0))
- return (ret);
+ if (HAS_CALLBACK(b)) {
+ ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L,
+ NULL);
+ if (ret <= 0)
+ return ret;
+ }
ret = b->method->callback_ctrl(b, cmd, fp);
- if (cb != NULL)
- ret = cb(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, cmd, 0, ret);
- return (ret);
+ if (HAS_CALLBACK(b))
+ ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0,
+ cmd, 0, ret, NULL);
+
+ return ret;
}
/*
*/
size_t BIO_ctrl_pending(BIO *bio)
{
- return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
+ long ret = BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
+
+ if (ret < 0)
+ ret = 0;
+#if LONG_MAX > SIZE_MAX
+ if (ret > SIZE_MAX)
+ ret = SIZE_MAX;
+#endif
+ return (size_t)ret;
}
size_t BIO_ctrl_wpending(BIO *bio)
{
- return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
+ long ret = BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
+
+ if (ret < 0)
+ ret = 0;
+#if LONG_MAX > SIZE_MAX
+ if (ret > SIZE_MAX)
+ ret = SIZE_MAX;
+#endif
+ return (size_t)ret;
}
/* put the 'bio' on the end of b's list of operators */
BIO *lb;
if (b == NULL)
- return (bio);
+ return bio;
lb = b;
while (lb->next_bio != NULL)
lb = lb->next_bio;
bio->prev_bio = lb;
/* called to do internal processing */
BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb);
- return (b);
+ return b;
}
/* Remove the first and return the rest */
BIO *ret;
if (b == NULL)
- return (NULL);
+ return NULL;
ret = b->next_bio;
BIO_ctrl(b, BIO_CTRL_POP, 0, b);
b->next_bio = NULL;
b->prev_bio = NULL;
- return (ret);
+ return ret;
}
BIO *BIO_get_retry_BIO(BIO *bio, int *reason)
}
if (reason != NULL)
*reason = last->retry_reason;
- return (last);
+ return last;
}
int BIO_get_retry_reason(BIO *bio)
{
- return (bio->retry_reason);
+ return bio->retry_reason;
+}
+
+void BIO_set_retry_reason(BIO *bio, int reason)
+{
+ bio->retry_reason = reason;
}
BIO *BIO_find_type(BIO *bio, int type)
{
int mt, mask;
- if (!bio)
+ if (bio == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
return NULL;
- mask = type & 0xff;
+ }
+ mask = type & BIO_TYPE_MASK;
do {
if (bio->method != NULL) {
mt = bio->method->type;
if (!mask) {
if (mt & type)
- return (bio);
- } else if (mt == type)
- return (bio);
+ return bio;
+ } else if (mt == type) {
+ return bio;
+ }
}
bio = bio->next_bio;
} while (bio != NULL);
- return (NULL);
+ return NULL;
}
BIO *BIO_next(BIO *b)
{
- if (!b)
+ if (b == NULL)
return NULL;
return b->next_bio;
}
+void BIO_set_next(BIO *b, BIO *next)
+{
+ b->next_bio = next;
+}
+
void BIO_free_all(BIO *bio)
{
BIO *b;
while (bio != NULL) {
b = bio;
- ref = b->references;
+ CRYPTO_GET_REF(&b->references, &ref);
bio = bio->next_bio;
BIO_free(b);
/* Since ref count > 1, don't free anyone else. */
for (bio = in; bio != NULL; bio = bio->next_bio) {
if ((new_bio = BIO_new(bio->method)) == NULL)
goto err;
+#ifndef OPENSSL_NO_DEPRECATED_3_0
new_bio->callback = bio->callback;
+#endif
+ new_bio->callback_ex = bio->callback_ex;
new_bio->cb_arg = bio->cb_arg;
new_bio->init = bio->init;
new_bio->shutdown = bio->shutdown;
/* This will let SSL_s_sock() work with stdin/stdout */
new_bio->num = bio->num;
- if (!BIO_dup_state(bio, (char *)new_bio)) {
+ if (BIO_dup_state(bio, (char *)new_bio) <= 0) {
BIO_free(new_bio);
goto err;
}
/* copy app data */
if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data,
- &bio->ex_data))
+ &bio->ex_data)) {
+ BIO_free(new_bio);
goto err;
+ }
if (ret == NULL) {
eoc = new_bio;
eoc = new_bio;
}
}
- return (ret);
+ return ret;
err:
- BIO_free(ret);
- return (NULL);
+ BIO_free_all(ret);
+
+ return NULL;
}
void BIO_copy_next_retry(BIO *b)
b->retry_reason = b->next_bio->retry_reason;
}
-int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
-{
- return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, argl, argp,
- new_func, dup_func, free_func);
-}
-
int BIO_set_ex_data(BIO *bio, int idx, void *data)
{
- return (CRYPTO_set_ex_data(&(bio->ex_data), idx, data));
+ return CRYPTO_set_ex_data(&(bio->ex_data), idx, data);
}
-void *BIO_get_ex_data(BIO *bio, int idx)
+void *BIO_get_ex_data(const BIO *bio, int idx)
{
- return (CRYPTO_get_ex_data(&(bio->ex_data), idx));
+ return CRYPTO_get_ex_data(&(bio->ex_data), idx);
}
-unsigned long BIO_number_read(BIO *bio)
+uint64_t BIO_number_read(BIO *bio)
{
if (bio)
return bio->num_read;
return 0;
}
-unsigned long BIO_number_written(BIO *bio)
+uint64_t BIO_number_written(BIO *bio)
{
if (bio)
return bio->num_write;
return 0;
}
+
+void bio_free_ex_data(BIO *bio)
+{
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+}
+
+void bio_cleanup(void)
+{
+#ifndef OPENSSL_NO_SOCK
+ bio_sock_cleanup_int();
+ CRYPTO_THREAD_lock_free(bio_lookup_lock);
+ bio_lookup_lock = NULL;
+#endif
+ CRYPTO_FREE_REF(&bio_type_count);
+}
+
+/* Internal variant of the below BIO_wait() not calling ERR_raise(...) */
+static int bio_wait(BIO *bio, time_t max_time, unsigned int nap_milliseconds)
+{
+#ifndef OPENSSL_NO_SOCK
+ int fd;
+#endif
+ long sec_diff;
+
+ if (max_time == 0) /* no timeout */
+ return 1;
+
+#ifndef OPENSSL_NO_SOCK
+ if (BIO_get_fd(bio, &fd) > 0) {
+ int ret = BIO_socket_wait(fd, BIO_should_read(bio), max_time);
+
+ if (ret != -1)
+ return ret;
+ }
+#endif
+ /* fall back to polling since no sockets are available */
+
+ sec_diff = (long)(max_time - time(NULL)); /* might overflow */
+ if (sec_diff < 0)
+ return 0; /* clearly timeout */
+
+ /* now take a nap at most the given number of milliseconds */
+ if (sec_diff == 0) { /* we are below the 1 seconds resolution of max_time */
+ if (nap_milliseconds > 1000)
+ nap_milliseconds = 1000;
+ } else { /* for sec_diff > 0, take min(sec_diff * 1000, nap_milliseconds) */
+ if ((unsigned long)sec_diff * 1000 < nap_milliseconds)
+ nap_milliseconds = (unsigned int)sec_diff * 1000;
+ }
+ OSSL_sleep(nap_milliseconds);
+ return 1;
+}
+
+/*-
+ * Wait on (typically socket-based) BIO at most until max_time.
+ * Succeed immediately if max_time == 0.
+ * If sockets are not available support polling: succeed after waiting at most
+ * the number of nap_milliseconds in order to avoid a tight busy loop.
+ * Call ERR_raise(ERR_LIB_BIO, ...) on timeout or error.
+ * Returns -1 on error, 0 on timeout, and 1 on success.
+ */
+int BIO_wait(BIO *bio, time_t max_time, unsigned int nap_milliseconds)
+{
+ int rv = bio_wait(bio, max_time, nap_milliseconds);
+
+ if (rv <= 0)
+ ERR_raise(ERR_LIB_BIO,
+ rv == 0 ? BIO_R_TRANSFER_TIMEOUT : BIO_R_TRANSFER_ERROR);
+ return rv;
+}
+
+/*
+ * Connect via given BIO using BIO_do_connect() until success/timeout/error.
+ * Parameter timeout == 0 means no timeout, < 0 means exactly one try.
+ * For non-blocking and potentially even non-socket BIOs perform polling with
+ * the given density: between polls sleep nap_milliseconds using BIO_wait()
+ * in order to avoid a tight busy loop.
+ * Returns -1 on error, 0 on timeout, and 1 on success.
+ */
+int BIO_do_connect_retry(BIO *bio, int timeout, int nap_milliseconds)
+{
+ int blocking = timeout <= 0;
+ time_t max_time = timeout > 0 ? time(NULL) + timeout : 0;
+ int rv;
+
+ if (bio == NULL) {
+ ERR_raise(ERR_LIB_BIO, ERR_R_PASSED_NULL_PARAMETER);
+ return -1;
+ }
+
+ if (nap_milliseconds < 0)
+ nap_milliseconds = 100;
+ BIO_set_nbio(bio, !blocking);
+
+ retry:
+ ERR_set_mark();
+ rv = BIO_do_connect(bio);
+
+ if (rv <= 0) { /* could be timeout or retryable error or fatal error */
+ int err = ERR_peek_last_error();
+ int reason = ERR_GET_REASON(err);
+ int do_retry = BIO_should_retry(bio); /* may be 1 only if !blocking */
+
+ if (ERR_GET_LIB(err) == ERR_LIB_BIO) {
+ switch (reason) {
+ case ERR_R_SYS_LIB:
+ /*
+ * likely retryable system error occurred, which may be
+ * EAGAIN (resource temporarily unavailable) some 40 secs after
+ * calling getaddrinfo(): Temporary failure in name resolution
+ * or a premature ETIMEDOUT, some 30 seconds after connect()
+ */
+ case BIO_R_CONNECT_ERROR:
+ case BIO_R_NBIO_CONNECT_ERROR:
+ /* some likely retryable connection error occurred */
+ (void)BIO_reset(bio); /* often needed to avoid retry failure */
+ do_retry = 1;
+ break;
+ default:
+ break;
+ }
+ }
+ if (timeout >= 0 && do_retry) {
+ ERR_pop_to_mark();
+ /* will not actually wait if timeout == 0 (i.e., blocking BIO): */
+ rv = bio_wait(bio, max_time, nap_milliseconds);
+ if (rv > 0)
+ goto retry;
+ ERR_raise(ERR_LIB_BIO,
+ rv == 0 ? BIO_R_CONNECT_TIMEOUT : BIO_R_CONNECT_ERROR);
+ } else {
+ ERR_clear_last_mark();
+ rv = -1;
+ if (err == 0) /* missing error queue entry */
+ /* workaround: general error */
+ ERR_raise(ERR_LIB_BIO, BIO_R_CONNECT_ERROR);
+ }
+ } else {
+ ERR_clear_last_mark();
+ }
+
+ return rv;
+}
projects / openssl.git / blobdiff