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wolfssl-w32/src/bio.c

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/* bio.c
*
* Copyright (C) 2006-2023 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <wolfssl/wolfcrypt/settings.h>
#if defined(OPENSSL_EXTRA) && !defined(_WIN32)
/* turn on GNU extensions for XVASPRINTF with wolfSSL_BIO_printf */
#undef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#if !defined(WOLFSSL_BIO_INCLUDED)
#ifndef WOLFSSL_IGNORE_FILE_WARN
#warning bio.c does not need to be compiled separately from ssl.c
#endif
#else
/*
* WOLFSSL_BIO_RESIZE_THRESHOLD:
* The amount of data to return before we attempt to resize the internal
* buffers. After we have returned more than this define amount of bytes of
* data, we will resize the buffers to get rid of excess memory.
*/
/* Helper function to decode a base64 input
*
* returns size of resulting buffer on success
*/
static int wolfSSL_BIO_BASE64_read(WOLFSSL_BIO* bio, void* buf, int len)
{
word32 frmtSz = len;
WOLFSSL_ENTER("wolfSSL_BIO_BASE64_read");
if (Base64_Decode((const byte*)buf, (word32)len, (byte*)buf, &frmtSz) !=0) {
WOLFSSL_MSG("Err doing base64 decode");
return WOLFSSL_FATAL_ERROR;
}
(void)bio;
return (int)frmtSz;
}
/* Helper function to read from WOLFSSL_BIO_BIO type
*
* returns amount in bytes read on success
*/
static int wolfSSL_BIO_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
{
int sz;
char* pt;
sz = wolfSSL_BIO_nread(bio, &pt, len);
if (sz > 0) {
XMEMCPY(buf, pt, sz);
}
return sz;
}
#ifndef WOLFSSL_BIO_RESIZE_THRESHOLD
#define WOLFSSL_BIO_RESIZE_THRESHOLD 100
#endif
/* Handles reading from a memory type BIO and advancing the state.
*
* bio WOLFSSL_BIO to read from
* buf buffer to put data from bio in
* len amount of data to be read
*
* returns size read on success
*/
static int wolfSSL_BIO_MEMORY_read(WOLFSSL_BIO* bio, void* buf, int len)
{
int sz;
#ifndef WOLFSSL_DEBUG_OPENSSL
if (len > 1)
#endif
{
WOLFSSL_ENTER("wolfSSL_BIO_MEMORY_read");
}
sz = wolfSSL_BIO_pending(bio);
if (sz > 0) {
int memSz;
if (bio->mem_buf == NULL) {
WOLFSSL_MSG("bio->mem_buf is null");
return WOLFSSL_BIO_ERROR;
}
if (sz > len) {
sz = len;
}
memSz = (int)bio->mem_buf->length - bio->rdIdx;
if (memSz < sz) {
WOLFSSL_MSG("Not enough memory for reading");
return WOLFSSL_BIO_ERROR;
}
XMEMCPY(buf, bio->mem_buf->data + bio->rdIdx, sz);
bio->rdIdx += sz;
if (bio->rdIdx >= bio->wrSz) {
if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
bio->wrSz = bio->wrSzReset;
}
else {
/* All data read resize down to WOLFSSL_BIO_RESIZE_THRESHOLD */
if (bio->mem_buf->max > WOLFSSL_BIO_RESIZE_THRESHOLD &&
wolfSSL_BUF_MEM_resize(bio->mem_buf, WOLFSSL_BIO_RESIZE_THRESHOLD) == 0) {
WOLFSSL_MSG("wolfSSL_BUF_MEM_resize error");
return WOLFSSL_BIO_ERROR;
}
bio->rdIdx = 0;
bio->wrSz = 0;
bio->mem_buf->length = 0;
}
bio->ptr = bio->mem_buf->data;
}
else if (bio->rdIdx >= WOLFSSL_BIO_RESIZE_THRESHOLD &&
!(bio->flags & BIO_FLAGS_MEM_RDONLY)) {
/* Resize the memory so we are not taking up more than necessary.
* memmove reverts internally to memcpy if areas don't overlap */
XMEMMOVE(bio->mem_buf->data, bio->mem_buf->data + bio->rdIdx,
bio->wrSz - bio->rdIdx);
bio->wrSz -= bio->rdIdx;
bio->rdIdx = 0;
/* Resize down to WOLFSSL_BIO_RESIZE_THRESHOLD for fewer
* allocations. */
if (wolfSSL_BUF_MEM_resize(bio->mem_buf,
bio->wrSz > WOLFSSL_BIO_RESIZE_THRESHOLD ? bio->wrSz :
WOLFSSL_BIO_RESIZE_THRESHOLD) == 0) {
WOLFSSL_MSG("wolfSSL_BUF_MEM_resize error");
return WOLFSSL_BIO_ERROR;
}
bio->mem_buf->length = bio->wrSz;
bio->ptr = bio->mem_buf->data;
}
}
else {
if (bio->eof < 0) /* Sanity check the eof value */
return bio->eof;
else {
WOLFSSL_MSG("Weird bio->eof value. Returning default");
return WOLFSSL_BIO_ERROR;
}
}
return sz;
}
int wolfSSL_BIO_method_type(const WOLFSSL_BIO *b)
{
return b != NULL ? b->type : (int)WOLFSSL_BIO_UNDEF;
}
#ifndef WOLFCRYPT_ONLY
/* Helper function to read from WOLFSSL_BIO_SSL type
*
* returns the number of bytes read on success
*/
static int wolfSSL_BIO_SSL_read(WOLFSSL_BIO* bio, void* buf,
int len, WOLFSSL_BIO* front)
{
int ret;
WOLFSSL_ENTER("wolfSSL_BIO_SSL_read");
/* already got eof, again is error */
if ((front == NULL) || front->eof)
return WOLFSSL_FATAL_ERROR;
bio->flags &= ~(WOLFSSL_BIO_FLAG_RETRY); /* default no retry */
ret = wolfSSL_read((WOLFSSL*)bio->ptr, buf, len);
if (ret == 0)
front->eof = 1;
else if (ret < 0) {
int err = wolfSSL_get_error((WOLFSSL*)bio->ptr, 0);
if ( !(err == WOLFSSL_ERROR_WANT_READ || err == WOLFSSL_ERROR_WANT_WRITE) ) {
front->eof = 1;
}
else {
bio->flags |= WOLFSSL_BIO_FLAG_RETRY; /* should retry */
}
}
return ret;
}
static int wolfSSL_BIO_MD_read(WOLFSSL_BIO* bio, void* buf, int sz)
{
if (wolfSSL_EVP_MD_CTX_type((WOLFSSL_EVP_MD_CTX*)bio->ptr) == NID_hmac) {
if (wolfSSL_EVP_DigestSignUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, buf,
sz) != WOLFSSL_SUCCESS)
{
return WOLFSSL_FATAL_ERROR;
}
}
else {
if (wolfSSL_EVP_DigestUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, buf, sz)
!= WOLFSSL_SUCCESS) {
return WOLFSSL_FATAL_ERROR;
}
}
return sz;
}
#endif /* WOLFCRYPT_ONLY */
/* Used to read data from a WOLFSSL_BIO structure
*
* bio structure to read data from
* buf buffer to hold the result
* len length of buf buffer
*
* returns the number of bytes read on success
*/
int wolfSSL_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
{
int ret = 0;
WOLFSSL_BIO* front = bio;
int sz = 0;
#ifndef WOLFSSL_DEBUG_OPENSSL
if (len > 1)
#endif
{
WOLFSSL_ENTER("wolfSSL_BIO_read");
}
/* info cb, abort if user returns <= 0*/
if (front != NULL && front->infoCb != NULL) {
ret = (int)front->infoCb(front, WOLFSSL_BIO_CB_READ, (const char*)buf,
len, 0, 1);
if (ret <= 0) {
return ret;
}
}
/* start at end of list (or a WOLFSSL_BIO_SSL object since it takes care of
* the rest of the chain) and work backwards */
while (bio != NULL && bio->next != NULL && bio->type != WOLFSSL_BIO_SSL) {
bio = bio->next;
}
while (bio != NULL && ret >= 0) {
/* check for custom read */
if (bio->method && bio->method->readCb) {
ret = bio->method->readCb(bio, (char*)buf, len);
}
else {
switch (bio->type) {
case WOLFSSL_BIO_BASE64: /* formatting data */
if (sz > 0)
ret = wolfSSL_BIO_BASE64_read(bio, buf, sz);
break;
case WOLFSSL_BIO_BIO: /* read BIOs */
ret = wolfSSL_BIO_BIO_read(bio, buf, len);
break;
case WOLFSSL_BIO_MEMORY:
ret = wolfSSL_BIO_MEMORY_read(bio, buf, len);
break;
case WOLFSSL_BIO_FILE:
#ifndef NO_FILESYSTEM
if (bio->ptr) {
ret = (int)XFREAD(buf, 1, len, (XFILE)bio->ptr);
}
else {
#if !defined(USE_WINDOWS_API) && !defined(NO_WOLFSSL_DIR) && \
!defined(WOLFSSL_NUCLEUS) && !defined(WOLFSSL_NUCLEUS_1_2)
ret = (int)XREAD(bio->num, buf, len);
#else
WOLFSSL_MSG("No file pointer and XREAD not enabled");
ret = NOT_COMPILED_IN;
#endif
}
#else
WOLFSSL_MSG("WOLFSSL_BIO_FILE used with NO_FILESYSTEM");
ret = NOT_COMPILED_IN;
#endif /* !NO_FILESYSTEM */
break;
case WOLFSSL_BIO_SSL:
#ifndef WOLFCRYPT_ONLY
ret = wolfSSL_BIO_SSL_read(bio, buf, len, front);
#else
WOLFSSL_MSG("WOLFSSL_BIO_SSL used with WOLFCRYPT_ONLY");
ret = NOT_COMPILED_IN;
#endif
break;
case WOLFSSL_BIO_MD: /* data passing through BIO MD wrapper */
#ifndef WOLFCRYPT_ONLY
ret = wolfSSL_BIO_MD_read(bio, buf, ret);
#else
WOLFSSL_MSG("WOLFSSL_BIO_MD used with WOLFCRYPT_ONLY");
ret = NOT_COMPILED_IN;
#endif
break;
case WOLFSSL_BIO_SOCKET:
#ifdef USE_WOLFSSL_IO
/* BIO requires built-in socket support
* (cannot be used with WOLFSSL_USER_IO) */
ret = wolfIO_Recv(bio->num, (char*)buf, len, 0);
#else
ret = NOT_COMPILED_IN;
#endif
break;
} /* switch */
}
/* case where front of list is done */
if (bio == front) {
break; /* at front of list so be done */
}
if (ret > 0) {
sz = ret; /* adjust size for formatting */
}
/* previous WOLFSSL_BIO in list working towards head of list */
bio = bio->prev;
}
/* info cb, user can override return value */
if (front != NULL && front->infoCb != NULL) {
ret = (int)front->infoCb(front,
WOLFSSL_BIO_CB_READ | WOLFSSL_BIO_CB_RETURN,
(const char*)buf, len, 0, ret);
}
return ret;
}
#ifdef WOLFSSL_BASE64_ENCODE
/* Converts data into base64 output
*
* returns the resulting buffer size on success.
*/
/**
* `out` buffer is allocated here and the caller is responsible
* for free'ing it
* `data` and `out` can be the same in which case `data` should
* always be set to `out` after this function call succeeds
*/
static int wolfSSL_BIO_BASE64_write(WOLFSSL_BIO* bio, const void* data,
word32 inLen, byte** out, word32* outLen, void* heap)
{
byte* tmp = NULL;
word32 sz = 0;
WOLFSSL_ENTER("wolfSSL_BIO_BASE64_write");
if (bio == NULL || data == NULL || out == NULL || outLen == NULL) {
return BAD_FUNC_ARG;
}
/* get the encoded length */
if (bio->flags & WOLFSSL_BIO_FLAG_BASE64_NO_NL) {
if (Base64_Encode_NoNl((const byte*)data, inLen, NULL,
&sz) != LENGTH_ONLY_E) {
WOLFSSL_MSG("Error with base64 get length");
return WOLFSSL_FATAL_ERROR;
}
}
else {
if (Base64_Encode((const byte*)data, inLen, NULL, &sz) !=
LENGTH_ONLY_E) {
WOLFSSL_MSG("Error with base64 get length");
return WOLFSSL_FATAL_ERROR;
}
}
if (sz == 0) {
*outLen = 0;
return 0; /* nothing to do */
}
/* allocate temp buffer, since base64 encode does not allow inline */
tmp = (byte*)XMALLOC(sz, heap, DYNAMIC_TYPE_TMP_BUFFER);
if (tmp == NULL) {
WOLFSSL_MSG("Memory error");
return WOLFSSL_FATAL_ERROR;
}
if (bio->flags & WOLFSSL_BIO_FLAG_BASE64_NO_NL) {
if (Base64_Encode_NoNl((const byte*)data, inLen,
tmp, &sz) < 0) {
WOLFSSL_MSG("Base64_Encode_NoNl error");
XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
return WOLFSSL_FATAL_ERROR;
}
}
else {
if (Base64_Encode((const byte*)data, inLen,
tmp, &sz) < 0) {
WOLFSSL_MSG("Base64_Encode error");
XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
return WOLFSSL_FATAL_ERROR;
}
}
if (*out != NULL)
XFREE(*out, heap, DYNAMIC_TYPE_TMP_BUFFER);
*out = tmp;
*outLen = sz;
/* out is free'd by caller */
(void)heap;
return inLen;
}
#endif /* WOLFSSL_BASE64_ENCODE */
#ifndef WOLFCRYPT_ONLY
/* Helper function for writing to a WOLFSSL_BIO_SSL type
*
* returns the amount written in bytes on success
*/
static int wolfSSL_BIO_SSL_write(WOLFSSL_BIO* bio, const void* data,
int len, WOLFSSL_BIO* front)
{
int ret;
WOLFSSL_ENTER("wolfSSL_BIO_SSL_write");
if (bio->ptr == NULL) {
return BAD_FUNC_ARG;
}
bio->flags &= ~(WOLFSSL_BIO_FLAG_RETRY); /* default no retry */
ret = wolfSSL_write((WOLFSSL*)bio->ptr, data, len);
if (ret == 0)
front->eof = 1;
else if (ret < 0) {
int err = wolfSSL_get_error((WOLFSSL*)bio->ptr, 0);
if ( !(err == WOLFSSL_ERROR_WANT_READ || err == WOLFSSL_ERROR_WANT_WRITE) ) {
front->eof = 1;
}
else {
bio->flags |= WOLFSSL_BIO_FLAG_RETRY; /* should retry */
}
}
return ret;
}
#endif /* WOLFCRYPT_ONLY */
/* Writes to a WOLFSSL_BIO_BIO type.
*
* returns the amount written on success
*/
static int wolfSSL_BIO_BIO_write(WOLFSSL_BIO* bio, const void* data,
int len)
{
int sz;
char* buf;
WOLFSSL_ENTER("wolfSSL_BIO_BIO_write");
/* adding in sanity checks for static analysis tools */
if (bio == NULL || data == NULL) {
return BAD_FUNC_ARG;
}
sz = wolfSSL_BIO_nwrite(bio, &buf, len);
/* test space for write */
if (sz <= 0) {
WOLFSSL_MSG("No room left to write");
return sz;
}
XMEMCPY(buf, data, sz);
return sz;
}
/* for complete compatibility a bio memory write allocs its own memory
* until the application runs out ....
*
* bio structure to hold incoming data
* data buffer holding the data to be written
* len length of data buffer
*
* returns the amount of data written on success and WOLFSSL_FAILURE or
* WOLFSSL_BIO_ERROR for failure cases.
*/
static int wolfSSL_BIO_MEMORY_write(WOLFSSL_BIO* bio, const void* data,
int len)
{
WOLFSSL_ENTER("wolfSSL_BIO_MEMORY_write");
if (bio == NULL || bio->mem_buf == NULL || data == NULL) {
WOLFSSL_MSG("one of input parameters is null");
return WOLFSSL_FAILURE;
}
if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
return WOLFSSL_FAILURE;
}
if (len == 0)
return WOLFSSL_SUCCESS; /* Return early to make logic simpler */
if (wolfSSL_BUF_MEM_grow_ex(bio->mem_buf, bio->wrSz + len, 0)
== 0) {
WOLFSSL_MSG("Error growing memory area");
return WOLFSSL_FAILURE;
}
if (bio->mem_buf->data == NULL) {
WOLFSSL_MSG("Buffer data is NULL");
return WOLFSSL_FAILURE;
}
XMEMCPY(bio->mem_buf->data + bio->wrSz, data, len);
bio->ptr = bio->mem_buf->data;
bio->num = (int)bio->mem_buf->max;
bio->wrSz += len;
bio->wrIdx += len;
return len;
}
#ifndef WOLFCRYPT_ONLY
/* Helper function for writing to a WOLFSSL_BIO_MD type
*
* returns the amount written in bytes on success (0)
*/
static int wolfSSL_BIO_MD_write(WOLFSSL_BIO* bio, const void* data, int len)
{
int ret = 0;
if (bio == NULL || data == NULL) {
return BAD_FUNC_ARG;
}
if (wolfSSL_EVP_MD_CTX_type((WOLFSSL_EVP_MD_CTX*)bio->ptr) == NID_hmac) {
if (wolfSSL_EVP_DigestSignUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, data,
len) != WOLFSSL_SUCCESS) {
ret = WOLFSSL_BIO_ERROR;
}
}
else {
if (wolfSSL_EVP_DigestUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, data, len)
!= WOLFSSL_SUCCESS) {
ret = WOLFSSL_BIO_ERROR;
}
}
return ret;
}
#endif /* WOLFCRYPT_ONLY */
/* Writes data to a WOLFSSL_BIO structure
*
* bio structure to write to
* data holds the data to be written
* len length of data buffer
*
* returns the amount written in bytes on success
*/
int wolfSSL_BIO_write(WOLFSSL_BIO* bio, const void* data, int len)
{
int ret = 0;
#ifdef WOLFSSL_BASE64_ENCODE
/* Use extra return var as we want to return how much of input we have
* written, not how big the base64 encoding ended up being */
int retB64 = 0;
#endif
WOLFSSL_BIO* front = bio;
void* frmt = NULL;
word32 frmtSz = 0;
WOLFSSL_ENTER("wolfSSL_BIO_write");
/* info cb, abort if user returns <= 0*/
if (front != NULL && front->infoCb != NULL) {
ret = (int)front->infoCb(front, WOLFSSL_BIO_CB_WRITE,
(const char*)data, len, 0, 1);
if (ret <= 0) {
return ret;
}
}
while (bio != NULL && ret >= 0) {
/* check for custom write */
if (bio->method && bio->method->writeCb) {
ret = bio->method->writeCb(bio, (const char*)data, len);
}
else {
switch (bio->type) {
case WOLFSSL_BIO_BASE64:
{
#ifdef WOLFSSL_BASE64_ENCODE
ret = retB64 = wolfSSL_BIO_BASE64_write(bio, data, (word32)len,
(byte**)&frmt, &frmtSz, front->heap);
if (ret > 0) {
/* change so that data is formatted buffer */
data = frmt;
len = frmtSz;
}
#else
WOLFSSL_MSG("WOLFSSL_BIO_BASE64 used without "
"WOLFSSL_BASE64_ENCODE");
ret = NOT_COMPILED_IN;
#endif /* WOLFSSL_BASE64_ENCODE */
break;
}
case WOLFSSL_BIO_BIO: /* write bios */
ret = wolfSSL_BIO_BIO_write(bio, data, len);
break;
case WOLFSSL_BIO_MEMORY:
ret = wolfSSL_BIO_MEMORY_write(bio, data, len);
break;
case WOLFSSL_BIO_FILE:
#ifndef NO_FILESYSTEM
if (bio->ptr) {
ret = (int)XFWRITE(data, 1, len, (XFILE)bio->ptr);
}
else {
#if !defined(USE_WINDOWS_API) && !defined(NO_WOLFSSL_DIR) && \
!defined(WOLFSSL_NUCLEUS) && !defined(WOLFSSL_NUCLEUS_1_2)
ret = (int)XWRITE(bio->num, data, len);
#else
WOLFSSL_MSG("No file pointer and XWRITE not enabled");
ret = NOT_COMPILED_IN;
#endif
}
#else
WOLFSSL_MSG("WOLFSSL_BIO_FILE used with NO_FILESYSTEM");
ret = NOT_COMPILED_IN;
#endif /* !NO_FILESYSTEM */
break;
case WOLFSSL_BIO_SSL:
#ifndef WOLFCRYPT_ONLY
/* already got eof, again is error */
if (front->eof) {
ret = WOLFSSL_FATAL_ERROR;
}
else {
ret = wolfSSL_BIO_SSL_write(bio, data, len, front);
}
/* Rest of chain is taken care of inside call */
goto exit_chain;
#else
WOLFSSL_MSG("WOLFSSL_BIO_SSL used with WOLFCRYPT_ONLY");
ret = NOT_COMPILED_IN;
#endif
break;
case WOLFSSL_BIO_MD:
#ifndef WOLFCRYPT_ONLY
if (bio->next != NULL) { /* data passing through MD BIO */
ret = wolfSSL_BIO_MD_write(bio, data, len);
}
#else
WOLFSSL_MSG("WOLFSSL_BIO_MD used with WOLFCRYPT_ONLY");
ret = NOT_COMPILED_IN;
#endif
break;
case WOLFSSL_BIO_SOCKET:
#ifdef USE_WOLFSSL_IO
/* BIO requires built-in socket support
* (cannot be used with WOLFSSL_USER_IO) */
ret = wolfIO_Send(bio->num, (char*)data, len, 0);
#else
ret = NOT_COMPILED_IN;
#endif
break;
} /* switch */
}
/* advance to the next bio in list */
bio = bio->next;
}
#ifndef WOLFCRYPT_ONLY
exit_chain:
#endif
/* info cb, user can override return value */
if (front != NULL && front->infoCb != NULL) {
ret = (int)front->infoCb(front,
WOLFSSL_BIO_CB_WRITE | WOLFSSL_BIO_CB_RETURN,
(const char*)data, len, 0, ret);
}
if (frmt != NULL) {
XFREE(frmt, front->heap, DYNAMIC_TYPE_TMP_BUFFER);
}
#ifdef WOLFSSL_BASE64_ENCODE
if (retB64 > 0 && ret > 0)
return retB64;
else
#endif
return ret;
}
/* Wrapper for other BIO type functions, expected to grow as OpenSSL compatibility
* layer grows.
*
* return info. specific to the cmd that is passed in.
*/
#if defined(OPENSSL_ALL) || defined(OPENSSL_EXTRA)
long wolfSSL_BIO_ctrl(WOLFSSL_BIO *bio, int cmd, long larg, void *parg)
{
long ret;
(void)larg; /* not currently used */
WOLFSSL_ENTER("wolfSSL_BIO_ctrl");
if (bio && bio->method && bio->method->ctrlCb) {
return bio->method->ctrlCb(bio, cmd, larg, parg);
}
switch(cmd) {
case BIO_CTRL_PENDING:
case BIO_CTRL_WPENDING:
ret = (long)wolfSSL_BIO_ctrl_pending(bio);
break;
case BIO_CTRL_INFO:
ret = (long)wolfSSL_BIO_get_mem_data(bio, parg);
break;
case BIO_CTRL_FLUSH:
ret = (long)wolfSSL_BIO_flush(bio);
break;
case BIO_CTRL_RESET:
ret = (long)wolfSSL_BIO_reset(bio);
break;
default:
WOLFSSL_MSG("CMD not yet implemented");
ret = WOLFSSL_FAILURE;
break;
}
return ret;
}
/* Increment the WOLFSSL_BIO ref count by one, prevents BIO from being
* freed until ref count is back down to 1.
*
* bio the structure to increment ref count
*
* returns 1 on success, 0 on failure */
int wolfSSL_BIO_up_ref(WOLFSSL_BIO* bio)
{
if (bio) {
int ret;
wolfSSL_RefInc(&bio->ref, &ret);
#ifdef WOLFSSL_REFCNT_ERROR_RETURN
if (ret != 0) {
WOLFSSL_MSG("Failed to lock BIO mutex");
}
#else
(void)ret;
#endif
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
#endif
/* helper function for wolfSSL_BIO_gets
* size till a newline is hit
* returns the number of bytes including the new line character
*/
static int wolfSSL_getLineLength(char* in, int inSz)
{
int i;
for (i = 0; i < inSz; i++) {
if (in[i] == '\n') {
return i + 1; /* includes new line character */
}
}
return inSz; /* rest of buffer is all one line */
}
/* Gets the next line from bio. Goes until a new line character or end of
* buffer is reached.
*
* bio the structure to read a new line from
* buf buffer to hold the result
* sz the size of "buf" buffer
*
* returns the size of the result placed in buf on success and a 0 or negative
* value in an error case.
*/
int wolfSSL_BIO_gets(WOLFSSL_BIO* bio, char* buf, int sz)
{
int ret = WOLFSSL_BIO_UNSET;
WOLFSSL_ENTER("wolfSSL_BIO_gets");
if (bio == NULL || buf == NULL) {
return WOLFSSL_FAILURE;
}
/* not enough space for character plus terminator */
if (sz <= 1) {
return 0;
}
/* info cb, abort if user returns <= 0*/
if (bio->infoCb != NULL) {
ret = (int)bio->infoCb(bio, WOLFSSL_BIO_CB_GETS, buf, sz, 0, 1);
if (ret <= 0) {
return ret;
}
}
/* check if is custom method */
if (bio->method && bio->method->getsCb) {
return bio->method->getsCb(bio, buf, sz);
}
switch (bio->type) {
#ifndef NO_FILESYSTEM
case WOLFSSL_BIO_FILE:
if (((XFILE)bio->ptr) == XBADFILE) {
return WOLFSSL_BIO_ERROR;
}
#if defined(MICRIUM) || defined(LSR_FS) || defined(EBSNET)
WOLFSSL_MSG("XFGETS not ported for this system yet");
ret = XFGETS(buf, sz, (XFILE)bio->ptr);
#else
if (XFGETS(buf, sz, (XFILE)bio->ptr) != NULL) {
ret = (int)XSTRLEN(buf);
}
else {
ret = WOLFSSL_BIO_ERROR;
}
#endif
break;
#endif /* NO_FILESYSTEM */
case WOLFSSL_BIO_MEMORY:
{
const byte* c;
int cSz;
cSz = wolfSSL_BIO_pending(bio);
if (cSz == 0) {
ret = 0; /* Nothing to read */
buf[0] = '\0';
break;
}
if (wolfSSL_BIO_get_mem_data(bio, (void*)&c) <= 0) {
ret = WOLFSSL_BIO_ERROR;
break;
}
cSz = wolfSSL_getLineLength((char*)c, cSz);
/* check case where line was bigger then buffer and buffer
* needs end terminator */
if (cSz >= sz) {
cSz = sz - 1;
buf[cSz] = '\0';
}
else {
/* not minus 1 here because placing terminator after
msg and have checked that sz is large enough */
buf[cSz] = '\0';
}
ret = wolfSSL_BIO_MEMORY_read(bio, (void*)buf, cSz);
/* ret is read after the switch statement */
break;
}
case WOLFSSL_BIO_BIO:
{
char* c;
int cSz;
cSz = wolfSSL_BIO_nread0(bio, &c);
if (cSz == 0) {
ret = 0; /* Nothing to read */
buf[0] = '\0';
break;
}
cSz = wolfSSL_getLineLength(c, cSz);
/* check case where line was bigger then buffer and buffer
* needs end terminator */
if (cSz >= sz) {
cSz = sz - 1;
buf[cSz] = '\0';
}
else {
/* not minus 1 here because placing terminator after
msg and have checked that sz is large enough */
buf[cSz] = '\0';
}
ret = wolfSSL_BIO_nread(bio, &c, cSz);
if (ret > 0 && ret < sz) {
XMEMCPY(buf, c, ret);
}
break;
}
#ifndef WOLFCRYPT_ONLY
/* call final on hash */
case WOLFSSL_BIO_MD:
if (wolfSSL_EVP_MD_CTX_size((WOLFSSL_EVP_MD_CTX*)bio->ptr) > sz) {
WOLFSSL_MSG("Output buffer was too small for digest");
ret = WOLFSSL_FAILURE;
}
else {
unsigned int szOut = 0;
ret = wolfSSL_EVP_DigestFinal((WOLFSSL_EVP_MD_CTX*)bio->ptr,
(unsigned char*)buf, &szOut);
if (ret == WOLFSSL_SUCCESS) {
ret = szOut;
}
}
break;
#endif /* WOLFCRYPT_ONLY */
default:
WOLFSSL_MSG("BIO type not supported yet with wolfSSL_BIO_gets");
}
/* info cb, user can override return value */
if (bio->infoCb != NULL) {
ret = (int)bio->infoCb(bio, WOLFSSL_BIO_CB_GETS | WOLFSSL_BIO_CB_RETURN,
buf, sz, 0, ret);
}
return ret;
}
/* Writes a null terminated string to bio.
*
* bio the structure to write to
* buf buffer to holding input string
*
* returns the size of the result placed in bio on success and a 0 or negative
* value in an error case. -2 is returned if the implementation is not
* supported for the BIO type.
*/
int wolfSSL_BIO_puts(WOLFSSL_BIO* bio, const char* buf)
{
int sz;
if (bio == NULL || buf == NULL) {
return WOLFSSL_FATAL_ERROR;
}
/* check if is custom method */
if (bio->method && bio->method->putsCb) {
return bio->method->putsCb(bio, buf);
}
sz = (int)XSTRLEN(buf);
if (sz <= 0) {
return WOLFSSL_FATAL_ERROR;
}
return wolfSSL_BIO_write(bio, buf, sz);
}
/* searches through bio list for a BIO of type "type"
* returns NULL on failure to find a given type */
WOLFSSL_BIO* wolfSSL_BIO_find_type(WOLFSSL_BIO* bio, int type)
{
WOLFSSL_BIO* local = NULL;
WOLFSSL_BIO* current;
WOLFSSL_ENTER("wolfSSL_BIO_find_type");
if (bio == NULL) {
return local;
}
current = bio;
while (current != NULL) {
if (current->type == type) {
WOLFSSL_MSG("Found matching WOLFSSL_BIO type");
local = current;
break;
}
current = current->next;
}
return local;
}
/* returns a pointer to the next WOLFSSL_BIO in the chain on success.
* If a failure case then NULL is returned */
WOLFSSL_BIO* wolfSSL_BIO_next(WOLFSSL_BIO* bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_next");
if (bio == NULL) {
WOLFSSL_MSG("Bad argument passed in");
return NULL;
}
return bio->next;
}
/* BIO_wpending returns the number of bytes pending to be written. */
size_t wolfSSL_BIO_wpending(const WOLFSSL_BIO *bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_wpending");
if (bio == NULL)
return 0;
if (bio->type == WOLFSSL_BIO_MEMORY) {
return bio->wrSz;
}
/* type BIO_BIO then check paired buffer */
if (bio->type == WOLFSSL_BIO_BIO && bio->pair != NULL) {
WOLFSSL_BIO* pair = bio->pair;
return pair->wrIdx;
}
return 0;
}
/* Custom wolfSSL API to check if current bio object supports checking
* pending state.
*/
int wolfSSL_BIO_supports_pending(const WOLFSSL_BIO *bio)
{
while (bio) {
if (bio->type == WOLFSSL_BIO_SSL ||
bio->type == WOLFSSL_BIO_MEMORY ||
bio->type == WOLFSSL_BIO_BIO)
return 1;
bio = bio->next;
}
return 0;
}
/* Return the number of pending bytes in read and write buffers */
size_t wolfSSL_BIO_ctrl_pending(WOLFSSL_BIO *bio)
{
#ifdef WOLFSSL_DEBUG_OPENSSL
WOLFSSL_ENTER("wolfSSL_BIO_ctrl_pending");
#endif
if (bio == NULL) {
return 0;
}
if (bio->type == WOLFSSL_BIO_MD ||
bio->type == WOLFSSL_BIO_BASE64) {
/* these are wrappers only, get next bio */
while (bio->next != NULL) {
bio = bio->next;
if (bio->type == WOLFSSL_BIO_MD ||
bio->type == WOLFSSL_BIO_BASE64) {
break;
}
}
}
#ifndef WOLFCRYPT_ONLY
if (bio->type == WOLFSSL_BIO_SSL && bio->ptr != NULL) {
return (long)wolfSSL_pending((WOLFSSL*)bio->ptr);
}
#endif
if (bio->type == WOLFSSL_BIO_MEMORY) {
return bio->wrSz - bio->rdIdx;
}
/* type BIO_BIO then check paired buffer */
if (bio->type == WOLFSSL_BIO_BIO && bio->pair != NULL) {
WOLFSSL_BIO* pair = bio->pair;
if (pair->wrIdx > 0 && pair->wrIdx <= pair->rdIdx) {
/* in wrap around state where beginning of buffer is being
* overwritten */
return pair->wrSz - pair->rdIdx + pair->wrIdx;
}
else {
/* simple case where has not wrapped around */
return pair->wrIdx - pair->rdIdx;
}
}
return 0;
}
long wolfSSL_BIO_get_mem_ptr(WOLFSSL_BIO *bio, WOLFSSL_BUF_MEM **ptr)
{
WOLFSSL_BIO* front = bio;
long ret = WOLFSSL_FAILURE;
WOLFSSL_ENTER("wolfSSL_BIO_get_mem_ptr");
if (bio == NULL || ptr == NULL) {
return WOLFSSL_FAILURE;
}
/* start at end and work backwards to find a memory BIO in the BIO chain */
while ((bio != NULL) && (bio->next != NULL)) {
bio = bio->next;
}
while (bio != NULL) {
if (bio->type == WOLFSSL_BIO_MEMORY) {
*ptr = bio->mem_buf;
ret = WOLFSSL_SUCCESS;
}
if (bio == front) {
break;
}
bio = bio->prev;
}
return ret;
}
#ifdef OPENSSL_ALL
int wolfSSL_BIO_set_mem_buf(WOLFSSL_BIO* bio, WOLFSSL_BUF_MEM* bufMem,
int closeFlag)
{
if (!bio || !bufMem ||
(closeFlag != BIO_NOCLOSE && closeFlag != BIO_CLOSE))
return BAD_FUNC_ARG;
if (bio->mem_buf)
if (closeFlag == BIO_CLOSE)
wolfSSL_BUF_MEM_free(bio->mem_buf);
bio->mem_buf = bufMem;
bio->shutdown = closeFlag;
bio->wrSz = (int)bio->mem_buf->length;
bio->wrSzReset = bio->wrSz;
bio->num = (int)bio->mem_buf->max;
bio->ptr = bio->mem_buf->data;
bio->wrIdx = 0;
bio->rdIdx = 0;
return WOLFSSL_SUCCESS;
}
#endif
WOLFSSL_API long wolfSSL_BIO_int_ctrl(WOLFSSL_BIO *bp, int cmd, long larg, int iarg)
{
(void) bp;
(void) cmd;
(void) larg;
(void) iarg;
WOLFSSL_STUB("BIO_int_ctrl");
return 0;
}
int wolfSSL_BIO_set_write_buf_size(WOLFSSL_BIO *bio, long size)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_write_buf_size");
if (bio == NULL || bio->type != WOLFSSL_BIO_BIO || (int)size < 0) {
return WOLFSSL_FAILURE;
}
/* if already in pair then do not change size */
if (bio->pair != NULL) {
WOLFSSL_MSG("WOLFSSL_BIO is paired, free from pair before changing");
return WOLFSSL_FAILURE;
}
if (bio->ptr != NULL) {
XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
}
bio->ptr = (byte*)XMALLOC(size, bio->heap, DYNAMIC_TYPE_OPENSSL);
if (bio->ptr == NULL) {
WOLFSSL_MSG("Memory allocation error");
bio->wrSz = 0;
bio->num = 0;
bio->wrIdx = 0;
bio->rdIdx = 0;
if (bio->mem_buf != NULL) {
bio->mem_buf->data = NULL;
bio->mem_buf->length = 0;
bio->mem_buf->max = 0;
}
return WOLFSSL_FAILURE;
}
bio->wrSz = (int)size;
bio->num = (int)size;
bio->wrIdx = 0;
bio->rdIdx = 0;
if (bio->mem_buf != NULL) {
bio->mem_buf->data = (char*)bio->ptr;
bio->mem_buf->length = bio->num;
bio->mem_buf->max = bio->num;
}
return WOLFSSL_SUCCESS;
}
/* Joins two BIO_BIO types. The write of b1 goes to the read of b2 and vice
* versa. Creating something similar to a two way pipe.
* Reading and writing between the two BIOs is not thread safe, they are
* expected to be used by the same thread. */
int wolfSSL_BIO_make_bio_pair(WOLFSSL_BIO *b1, WOLFSSL_BIO *b2)
{
WOLFSSL_ENTER("wolfSSL_BIO_make_bio_pair");
if (b1 == NULL || b2 == NULL) {
WOLFSSL_LEAVE("wolfSSL_BIO_make_bio_pair", BAD_FUNC_ARG);
return WOLFSSL_FAILURE;
}
/* both are expected to be of type BIO and not already paired */
if (b1->type != WOLFSSL_BIO_BIO || b2->type != WOLFSSL_BIO_BIO ||
b1->pair != NULL || b2->pair != NULL) {
WOLFSSL_MSG("Expected type BIO and not already paired");
return WOLFSSL_FAILURE;
}
/* set default write size if not already set */
if (b1->ptr == NULL && wolfSSL_BIO_set_write_buf_size(b1,
WOLFSSL_BIO_SIZE) != WOLFSSL_SUCCESS) {
return WOLFSSL_FAILURE;
}
if (b2->ptr == NULL && wolfSSL_BIO_set_write_buf_size(b2,
WOLFSSL_BIO_SIZE) != WOLFSSL_SUCCESS) {
return WOLFSSL_FAILURE;
}
b1->pair = b2;
b2->pair = b1;
return WOLFSSL_SUCCESS;
}
int wolfSSL_BIO_ctrl_reset_read_request(WOLFSSL_BIO *b)
{
WOLFSSL_ENTER("wolfSSL_BIO_ctrl_reset_read_request");
if (b == NULL || b->type == WOLFSSL_BIO_MEMORY) {
return WOLFSSL_FAILURE;
}
b->readRq = 0;
return WOLFSSL_SUCCESS;
}
/* Does not advance read index pointer */
int wolfSSL_BIO_nread0(WOLFSSL_BIO *bio, char **buf)
{
WOLFSSL_ENTER("wolfSSL_BIO_nread0");
if (bio == NULL || buf == NULL) {
WOLFSSL_MSG("NULL argument passed in");
return 0;
}
/* if paired read from pair */
if (bio->pair != NULL) {
WOLFSSL_BIO* pair = bio->pair;
/* case where have wrapped around write buffer */
*buf = (char*)pair->ptr + pair->rdIdx;
if (pair->wrIdx > 0 && pair->rdIdx >= pair->wrIdx) {
return pair->wrSz - pair->rdIdx;
}
else {
return pair->wrIdx - pair->rdIdx;
}
}
return 0;
}
/* similar to wolfSSL_BIO_nread0 but advances the read index */
int wolfSSL_BIO_nread(WOLFSSL_BIO *bio, char **buf, int num)
{
int sz = WOLFSSL_BIO_UNSET;
WOLFSSL_ENTER("wolfSSL_BIO_nread");
if (bio == NULL || buf == NULL) {
WOLFSSL_MSG("NULL argument passed in");
return WOLFSSL_FAILURE;
}
if (bio->type == WOLFSSL_BIO_MEMORY) {
return WOLFSSL_FAILURE;
}
if (bio->pair != NULL) {
/* special case if asking to read 0 bytes */
if (num == 0) {
*buf = (char*)bio->pair->ptr + bio->pair->rdIdx;
return 0;
}
/* get amount able to read and set buffer pointer */
sz = wolfSSL_BIO_nread0(bio, buf);
if (sz == 0) {
return WOLFSSL_BIO_ERROR;
}
if (num < sz) {
sz = num;
}
bio->pair->rdIdx += sz;
/* check if have read to the end of the buffer and need to reset */
if (bio->pair->rdIdx == bio->pair->wrSz) {
bio->pair->rdIdx = 0;
if (bio->pair->wrIdx == bio->pair->wrSz) {
bio->pair->wrIdx = 0;
}
}
/* check if read up to write index, if so then reset index */
if (bio->pair->rdIdx == bio->pair->wrIdx) {
bio->pair->rdIdx = 0;
bio->pair->wrIdx = 0;
}
}
return sz;
}
int wolfSSL_BIO_nwrite(WOLFSSL_BIO *bio, char **buf, int num)
{
int sz = WOLFSSL_BIO_UNSET;
WOLFSSL_ENTER("wolfSSL_BIO_nwrite");
if (bio == NULL || buf == NULL) {
WOLFSSL_MSG("NULL argument passed in");
return 0;
}
if (bio->type != WOLFSSL_BIO_BIO) {
return WOLFSSL_FAILURE;
}
if (bio->pair != NULL) {
if (num == 0) {
*buf = (char*)bio->ptr + bio->wrIdx;
return 0;
}
if (bio->wrIdx < bio->rdIdx) {
/* if wrapped around only write up to read index. In this case
* rdIdx is always greater then wrIdx so sz will not be negative. */
sz = bio->rdIdx - bio->wrIdx;
}
else if (bio->rdIdx > 0 && bio->wrIdx == bio->rdIdx) {
return WOLFSSL_BIO_ERROR; /* no more room to write */
}
else {
/* write index is past read index so write to end of buffer */
sz = bio->wrSz - bio->wrIdx;
if (sz <= 0) {
/* either an error has occurred with write index or it is at the
* end of the write buffer. */
if (bio->rdIdx == 0) {
/* no more room, nothing has been read */
return WOLFSSL_BIO_ERROR;
}
bio->wrIdx = 0;
/* check case where read index is not at 0 */
if (bio->rdIdx > 0) {
sz = bio->rdIdx; /* can write up to the read index */
}
else {
sz = bio->wrSz; /* no restriction other then buffer size */
}
}
}
if (num < sz) {
sz = num;
}
*buf = (char*)bio->ptr + bio->wrIdx;
bio->wrIdx += sz;
/* if at the end of the buffer and space for wrap around then set
* write index back to 0 */
if (bio->wrIdx == bio->wrSz && bio->rdIdx > 0) {
bio->wrIdx = 0;
}
}
return sz;
}
/* Reset BIO to initial state */
int wolfSSL_BIO_reset(WOLFSSL_BIO *bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_reset");
if (bio == NULL) {
WOLFSSL_MSG("NULL argument passed in");
/* -1 is consistent failure even for FILE type */
return WOLFSSL_BIO_ERROR;
}
switch (bio->type) {
#ifndef NO_FILESYSTEM
case WOLFSSL_BIO_FILE:
if (XFSEEK((XFILE)bio->ptr, 0, XSEEK_SET) != 0)
return WOLFSSL_BIO_ERROR;
else
return 0;
#endif
case WOLFSSL_BIO_BIO:
bio->rdIdx = 0;
bio->wrIdx = 0;
return 0;
case WOLFSSL_BIO_MEMORY:
bio->rdIdx = 0;
if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
bio->wrIdx = bio->wrSzReset;
bio->wrSz = bio->wrSzReset;
}
else {
bio->wrSz = 0;
XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
bio->ptr = NULL;
bio->num = 0;
if (bio->mem_buf != NULL) {
bio->mem_buf->data = NULL;
bio->mem_buf->length = 0;
bio->mem_buf->max = 0;
}
}
return 0;
#ifndef WOLFCRYPT_ONLY
case WOLFSSL_BIO_MD:
if (bio->ptr != NULL) {
const WOLFSSL_EVP_MD* md =
wolfSSL_EVP_MD_CTX_md((WOLFSSL_EVP_MD_CTX*)bio->ptr);
wolfSSL_EVP_MD_CTX_cleanup((WOLFSSL_EVP_MD_CTX*)bio->ptr);
wolfSSL_EVP_MD_CTX_init((WOLFSSL_EVP_MD_CTX*)bio->ptr);
wolfSSL_EVP_DigestInit((WOLFSSL_EVP_MD_CTX*)bio->ptr, md);
}
return 0;
#endif /* WOLFCRYPT_ONLY */
default:
WOLFSSL_MSG("Unknown BIO type needs added to reset function");
}
return WOLFSSL_BIO_ERROR;
}
#ifndef NO_FILESYSTEM
/**
* Creates a new file BIO object
* @param fd file descriptor for to use for the new object
* @param close_flag BIO_NOCLOSE or BIO_CLOSE
* @return New BIO object or NULL on failure
*/
WOLFSSL_BIO *wolfSSL_BIO_new_fd(int fd, int close_flag)
{
WOLFSSL_BIO* bio;
bio = wolfSSL_BIO_new(wolfSSL_BIO_s_file());
if (!bio) {
WOLFSSL_MSG("wolfSSL_BIO_new error");
return NULL;
}
if (wolfSSL_BIO_set_fd(bio, fd, close_flag) != WOLFSSL_SUCCESS) {
wolfSSL_BIO_free(bio);
WOLFSSL_MSG("wolfSSL_BIO_set_fp error");
return NULL;
}
return bio;
}
long wolfSSL_BIO_set_fp(WOLFSSL_BIO *bio, XFILE fp, int c)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_fp");
if (bio == NULL || fp == XBADFILE) {
WOLFSSL_LEAVE("wolfSSL_BIO_set_fp", BAD_FUNC_ARG);
return WOLFSSL_FAILURE;
}
if (bio->type != WOLFSSL_BIO_FILE) {
return WOLFSSL_FAILURE;
}
bio->shutdown = (byte)c;
bio->ptr = (XFILE)fp;
return WOLFSSL_SUCCESS;
}
long wolfSSL_BIO_get_fp(WOLFSSL_BIO *bio, XFILE* fp)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_fp");
if (bio == NULL || fp == XBADFILE) {
return WOLFSSL_FAILURE;
}
if (bio->type != WOLFSSL_BIO_FILE) {
return WOLFSSL_FAILURE;
}
*fp = (XFILE)bio->ptr;
return WOLFSSL_SUCCESS;
}
/* overwrites file */
int wolfSSL_BIO_write_filename(WOLFSSL_BIO *bio, char *name)
{
WOLFSSL_ENTER("wolfSSL_BIO_write_filename");
if (bio == NULL || name == NULL) {
return WOLFSSL_FAILURE;
}
if (bio->type == WOLFSSL_BIO_FILE) {
if (((XFILE)bio->ptr) != XBADFILE && bio->shutdown == BIO_CLOSE) {
XFCLOSE((XFILE)bio->ptr);
}
bio->ptr = XFOPEN(name, "w");
if (((XFILE)bio->ptr) == XBADFILE) {
return WOLFSSL_FAILURE;
}
bio->shutdown = BIO_CLOSE;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_seek(WOLFSSL_BIO *bio, int ofs)
{
WOLFSSL_ENTER("wolfSSL_BIO_seek");
if (bio == NULL) {
return -1;
}
/* offset ofs from beginning of file */
if (bio->type == WOLFSSL_BIO_FILE &&
XFSEEK((XFILE)bio->ptr, ofs, SEEK_SET) < 0) {
return -1;
}
return 0;
}
/* wolfSSL_BIO_tell is provided as compatible API with
* BIO_tell which returns the current file position of a file related BIO.
* Returns the current file position on success and -1 for failure.
* Returns 0 for a BIOs except file related BIO.
*/
int wolfSSL_BIO_tell(WOLFSSL_BIO* bio)
{
int pos;
WOLFSSL_ENTER("wolfSSL_BIO_tell");
if (bio == NULL) {
return -1;
}
if (bio->type != WOLFSSL_BIO_FILE) {
return 0;
}
pos = (int)XFTELL((XFILE)bio->ptr);
if (pos < 0)
return -1;
else
return pos;
}
#endif /* NO_FILESYSTEM */
long wolfSSL_BIO_set_mem_eof_return(WOLFSSL_BIO *bio, int v)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_mem_eof_return");
if (bio != NULL && bio->type == WOLFSSL_BIO_MEMORY) {
bio->eof = v;
return WOLFSSL_SUCCESS;
}
else
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_get_len(WOLFSSL_BIO *bio)
{
int len;
#ifndef NO_FILESYSTEM
long memSz = 0;
XFILE file;
#endif
WOLFSSL_ENTER("wolfSSL_BIO_get_len");
if (bio == NULL) {
WOLFSSL_MSG("WOLFSSL_BIO was null");
len = BAD_FUNC_ARG;
}
else if ((len = wolfSSL_BIO_pending(bio)) > 0) {
}
#ifndef NO_FILESYSTEM
else if (bio->type == WOLFSSL_BIO_FILE) {
if (wolfSSL_BIO_get_fp(bio, &file) != WOLFSSL_SUCCESS)
len = BAD_FUNC_ARG;
if (len == 0) {
len = wolfssl_file_len(file, &memSz);
}
if (len == 0) {
len = (int)memSz;
}
}
#endif
return len;
}
void wolfSSL_BIO_set_callback(WOLFSSL_BIO *bio, wolf_bio_info_cb callback_func)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_callback");
if (bio != NULL) {
bio->infoCb = callback_func;
}
}
wolf_bio_info_cb wolfSSL_BIO_get_callback(WOLFSSL_BIO *bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_callback");
if (bio != NULL) {
return bio->infoCb;
}
return NULL;
}
void wolfSSL_BIO_set_callback_arg(WOLFSSL_BIO *bio, char *arg)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_callback_arg");
if (bio != NULL) {
bio->infoArg = arg;
}
}
char* wolfSSL_BIO_get_callback_arg(const WOLFSSL_BIO *bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_callback_arg");
if (bio != NULL) {
return bio->infoArg;
}
return NULL;
}
/* store a user pointer in the WOLFSSL_BIO structure */
void wolfSSL_BIO_set_data(WOLFSSL_BIO* bio, void *ptr)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_data");
if (bio != NULL) {
bio->usrCtx = ptr;
}
}
void* wolfSSL_BIO_get_data(WOLFSSL_BIO* bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_data");
if (bio != NULL)
return bio->usrCtx;
WOLFSSL_MSG("WOLFSSL_BIO was null");
return NULL;
}
/* If flag is 0 then blocking is set, if 1 then non blocking.
* Always returns WOLFSSL_SUCCESS.
*/
long wolfSSL_BIO_set_nbio(WOLFSSL_BIO* bio, long on)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_nbio");
if (bio) {
switch (bio->type) {
case WOLFSSL_BIO_SOCKET:
#ifdef XFCNTL
{
int ret;
int flag = XFCNTL(bio->num, F_GETFL, 0);
if (on) {
ret = XFCNTL(bio->num, F_SETFL, flag | O_NONBLOCK);
}
else {
ret = XFCNTL(bio->num, F_SETFL, flag & ~O_NONBLOCK);
}
if (ret == -1) {
WOLFSSL_MSG("Call to XFCNTL failed");
}
}
#endif
break;
case WOLFSSL_BIO_SSL:
#ifdef WOLFSSL_DTLS
wolfSSL_dtls_set_using_nonblock((WOLFSSL*)bio->ptr, (int)on);
#endif
break;
default:
WOLFSSL_MSG("Unsupported bio type for non blocking");
break;
}
}
(void)on;
return WOLFSSL_SUCCESS;
}
/* creates a new custom WOLFSSL_BIO_METHOD */
WOLFSSL_BIO_METHOD *wolfSSL_BIO_meth_new(int type, const char *name)
{
WOLFSSL_BIO_METHOD* meth;
WOLFSSL_ENTER("wolfSSL_BIO_meth_new");
meth = (WOLFSSL_BIO_METHOD*)XMALLOC(sizeof(WOLFSSL_BIO_METHOD), NULL,
DYNAMIC_TYPE_OPENSSL);
if (meth == NULL) {
WOLFSSL_MSG("Error allocating memory for WOLFSSL_BIO_METHOD");
return NULL;
}
XMEMSET(meth, 0, sizeof(WOLFSSL_BIO_METHOD));
meth->type = (byte)type;
XSTRNCPY(meth->name, name, MAX_BIO_METHOD_NAME - 1);
return meth;
}
void wolfSSL_BIO_meth_free(WOLFSSL_BIO_METHOD *biom)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_free");
XFREE(biom, NULL, DYNAMIC_TYPE_OPENSSL);
}
int wolfSSL_BIO_meth_set_write(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_write_cb biom_write)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_write");
if (biom) {
biom->writeCb = biom_write;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_meth_set_read(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_read_cb biom_read)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_read");
if (biom) {
biom->readCb = biom_read;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_meth_set_puts(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_puts_cb biom_puts)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_puts");
if (biom) {
biom->putsCb = biom_puts;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_meth_set_gets(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_gets_cb biom_gets)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_gets");
if (biom) {
biom->getsCb = biom_gets;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_meth_set_ctrl(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_ctrl_get_cb biom_ctrl)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_ctrl");
if (biom) {
biom->ctrlCb = biom_ctrl;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_meth_set_create(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_create_cb biom_create)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_create");
if (biom) {
biom->createCb = biom_create;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_meth_set_destroy(WOLFSSL_BIO_METHOD *biom,
wolfSSL_BIO_meth_destroy_cb biom_destroy)
{
WOLFSSL_ENTER("wolfSSL_BIO_meth_set_destroy");
if (biom) {
biom->freeCb = biom_destroy;
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
/* this compatibility function can be used for multiple BIO types */
int wolfSSL_BIO_get_mem_data(WOLFSSL_BIO* bio, void* p)
{
WOLFSSL_BIO* mem_bio;
#ifdef WOLFSSL_DEBUG_OPENSSL
WOLFSSL_ENTER("wolfSSL_BIO_get_mem_data");
#endif
if (bio == NULL)
return WOLFSSL_FATAL_ERROR;
mem_bio = bio;
/* Return pointer from last memory BIO in chain */
while (bio->next) {
bio = bio->next;
if (bio->type == WOLFSSL_BIO_MEMORY)
mem_bio = bio;
}
if (p) {
*(byte**)p = (byte*)mem_bio->ptr + mem_bio->rdIdx;
}
return mem_bio->wrSz - mem_bio->rdIdx;
}
int wolfSSL_BIO_pending(WOLFSSL_BIO* bio)
{
return (int)wolfSSL_BIO_ctrl_pending(bio);
}
int wolfSSL_BIO_flush(WOLFSSL_BIO* bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_flush");
if (bio == NULL)
return WOLFSSL_FAILURE;
if (bio->method != NULL && bio->method->ctrlCb != NULL) {
WOLFSSL_MSG("Calling custom BIO flush callback");
return (int)bio->method->ctrlCb(bio, BIO_CTRL_FLUSH, 0, NULL);
}
else if (bio->type == WOLFSSL_BIO_FILE) {
#if !defined(NO_FILESYSTEM) && defined(XFFLUSH)
if (XFFLUSH((FILE *)bio->ptr) != 0)
return WOLFSSL_FAILURE;
#endif /* !NO_FILESYSTEM && XFFLUSH */
}
return WOLFSSL_SUCCESS;
}
#ifdef OPENSSL_EXTRA
WOLFSSL_BIO_METHOD* wolfSSL_BIO_f_md(void)
{
static WOLFSSL_BIO_METHOD meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_MD);
WOLFSSL_ENTER("wolfSSL_BIO_f_md");
return &meth;
}
/* return the context and initialize the BIO state */
int wolfSSL_BIO_get_md_ctx(WOLFSSL_BIO *bio, WOLFSSL_EVP_MD_CTX **mdcp)
{
int ret = WOLFSSL_FAILURE;
if ((bio != NULL) && (mdcp != NULL)) {
*mdcp = (WOLFSSL_EVP_MD_CTX*)bio->ptr;
ret = WOLFSSL_SUCCESS;
}
return ret;
}
WOLFSSL_BIO_METHOD* wolfSSL_BIO_f_buffer(void)
{
static WOLFSSL_BIO_METHOD meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_BUFFER);
WOLFSSL_ENTER("wolfSSL_BIO_f_buffer");
return &meth;
}
#ifndef NO_WOLFSSL_STUB
long wolfSSL_BIO_set_write_buffer_size(WOLFSSL_BIO* bio, long size)
{
/* wolfSSL has internal buffer, compatibility only */
WOLFSSL_STUB("BIO_set_write_buffer_size");
WOLFSSL_MSG("Buffer resize failed");
(void)bio;
(void)size;
/* Even though this is only a STUB at the moment many user applications
* may attempt to use this. OpenSSL documentation specifies the return
* "return 1 if the buffer was successfully resized or 0 for failure."
* since wolfSSL does not resize the buffer will always return failure
* by default due to memory concerns until this stub is promoted to
* a non-stub function */
return WOLFSSL_FAILURE; /* 0, no resize happened */
}
#endif
WOLFSSL_BIO_METHOD* wolfSSL_BIO_s_bio(void)
{
static WOLFSSL_BIO_METHOD bio_meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_BIO);
WOLFSSL_ENTER("wolfSSL_BIO_s_bio");
return &bio_meth;
}
#ifndef NO_FILESYSTEM
WOLFSSL_BIO_METHOD* wolfSSL_BIO_s_file(void)
{
static WOLFSSL_BIO_METHOD file_meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_FILE);
WOLFSSL_ENTER("wolfSSL_BIO_s_file");
return &file_meth;
}
#endif
WOLFSSL_BIO_METHOD* wolfSSL_BIO_f_ssl(void)
{
static WOLFSSL_BIO_METHOD meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_SSL);
WOLFSSL_ENTER("wolfSSL_BIO_f_ssl");
return &meth;
}
WOLFSSL_BIO_METHOD *wolfSSL_BIO_s_socket(void)
{
static WOLFSSL_BIO_METHOD meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_SOCKET);
WOLFSSL_ENTER("wolfSSL_BIO_s_socket");
return &meth;
}
WOLFSSL_BIO* wolfSSL_BIO_new_socket(int sfd, int closeF)
{
WOLFSSL_BIO* bio = wolfSSL_BIO_new(wolfSSL_BIO_s_socket());
WOLFSSL_ENTER("wolfSSL_BIO_new_socket");
if (bio) {
bio->type = WOLFSSL_BIO_SOCKET;
bio->shutdown = (byte)closeF;
bio->num = sfd;
}
return bio;
}
/**
* Create new socket BIO object. This is a pure TCP connection with
* no SSL or TLS protection.
* @param str IP address to connect to
* @return New BIO object or NULL on failure
*/
WOLFSSL_BIO *wolfSSL_BIO_new_connect(const char *str)
{
WOLFSSL_BIO *bio;
WOLFSSL_ENTER("wolfSSL_BIO_new_connect");
bio = wolfSSL_BIO_new(wolfSSL_BIO_s_socket());
if (bio) {
const char* port = XSTRSTR(str, ":");
if (port != NULL)
bio->port = (word16)XATOI(port + 1);
else
port = str + XSTRLEN(str); /* point to null terminator */
bio->ip = (char*)XMALLOC((port - str) + 1, /* +1 for null char */
bio->heap, DYNAMIC_TYPE_OPENSSL);
if (bio->ip != NULL) {
XMEMCPY(bio->ip, str, port - str);
bio->ip[port - str] = '\0';
bio->type = WOLFSSL_BIO_SOCKET;
}
else {
BIO_free(bio);
bio = NULL;
}
}
return bio;
}
/**
* Create new socket BIO object. This is a pure TCP connection with
* no SSL or TLS protection.
* @param port port to connect to
* @return New BIO object or NULL on failure
*/
WOLFSSL_BIO *wolfSSL_BIO_new_accept(const char *port)
{
WOLFSSL_BIO *bio;
WOLFSSL_ENTER("wolfSSL_BIO_new_accept");
bio = wolfSSL_BIO_new(wolfSSL_BIO_s_socket());
if (bio) {
bio->port = (word16)XATOI(port);
bio->type = WOLFSSL_BIO_SOCKET;
}
return bio;
}
/**
* Set the port to connect to in the BIO object
* @param b BIO object
* @param port destination port
* @return WOLFSSL_SUCCESS on success and WOLFSSL_FAILURE on failure
*/
long wolfSSL_BIO_set_conn_port(WOLFSSL_BIO *b, char* port)
{
int p;
WOLFSSL_ENTER("wolfSSL_BIO_set_conn_port");
if (!b || !port) {
WOLFSSL_MSG("Bad parameter");
return WOLFSSL_FAILURE;
}
p = XATOI(port);
if (!p || p < 0) {
WOLFSSL_MSG("Port parsing error");
return WOLFSSL_FAILURE;
}
while (b != NULL && b->type != WOLFSSL_BIO_SOCKET) {
b = b->next;
}
if (b == NULL) {
WOLFSSL_MSG("Failed to find socket BIO in chain.");
return WOLFSSL_FAILURE;
}
b->port = (word16)p;
return WOLFSSL_SUCCESS;
}
#ifdef HAVE_HTTP_CLIENT
/**
* Attempt to connect to the destination address and port
* @param b BIO object
* @return WOLFSSL_SUCCESS on success and WOLFSSL_FAILURE on failure
*/
long wolfSSL_BIO_do_connect(WOLFSSL_BIO *b)
{
SOCKET_T sfd = SOCKET_INVALID;
WOLFSSL_ENTER("wolfSSL_BIO_do_connect");
if (!b) {
WOLFSSL_MSG("Bad parameter");
return WOLFSSL_FAILURE;
}
while (b && b->type != WOLFSSL_BIO_SOCKET)
b = b->next;
if (!b) {
WOLFSSL_MSG("No socket BIO in chain");
return WOLFSSL_FAILURE;
}
if (wolfIO_TcpConnect(&sfd, b->ip, b->port, 0) < 0 ) {
WOLFSSL_MSG("wolfIO_TcpConnect error");
return WOLFSSL_FAILURE;
}
b->num = (int)sfd;
b->shutdown = BIO_CLOSE;
return WOLFSSL_SUCCESS;
}
#ifdef HAVE_SOCKADDR
int wolfSSL_BIO_do_accept(WOLFSSL_BIO *b)
{
SOCKET_T sfd = SOCKET_INVALID;
WOLFSSL_ENTER("wolfSSL_BIO_do_accept");
if (!b) {
WOLFSSL_MSG("Bad parameter");
return WOLFSSL_FAILURE;
}
while (b && b->type != WOLFSSL_BIO_SOCKET)
b = b->next;
if (!b) {
WOLFSSL_MSG("No socket BIO in chain");
return WOLFSSL_FAILURE;
}
if (b->num == WOLFSSL_BIO_ERROR) {
if (wolfIO_TcpBind(&sfd, b->port) < 0) {
WOLFSSL_MSG("wolfIO_TcpBind error");
return WOLFSSL_FAILURE;
}
b->num = (int)sfd;
b->shutdown = BIO_CLOSE;
}
else {
WOLFSSL_BIO* new_bio;
int newfd = wolfIO_TcpAccept(b->num, NULL, NULL);
if (newfd < 0) {
WOLFSSL_MSG("wolfIO_TcpBind error");
return WOLFSSL_FAILURE;
}
/* Create a socket BIO for using the accept'ed connection */
new_bio = wolfSSL_BIO_new_socket(newfd, BIO_CLOSE);
if (new_bio == NULL) {
WOLFSSL_MSG("wolfSSL_BIO_new_socket error");
CloseSocket(newfd);
return WOLFSSL_FAILURE;
}
wolfSSL_BIO_set_callback(new_bio,
wolfSSL_BIO_get_callback(b));
wolfSSL_BIO_set_callback_arg(new_bio,
wolfSSL_BIO_get_callback_arg(b));
/* Push onto bio chain for user retrieval */
if (wolfSSL_BIO_push(b, new_bio) == NULL) {
WOLFSSL_MSG("wolfSSL_BIO_push error");
/* newfd is closed when bio is free'd */
wolfSSL_BIO_free(new_bio);
return WOLFSSL_FAILURE;
}
}
return WOLFSSL_SUCCESS;
}
#endif /* HAVE_SOCKADDR */
#endif /* HAVE_HTTP_CLIENT */
int wolfSSL_BIO_eof(WOLFSSL_BIO* b)
{
int ret = 0;
WOLFSSL_ENTER("wolfSSL_BIO_eof");
if (b == NULL)
return 1; /* Undefined in OpenSSL. Let's signal we're done. */
switch (b->type) {
case WOLFSSL_BIO_SSL:
ret = b->eof;
break;
default:
ret = wolfSSL_BIO_get_len(b) == 0;
break;
}
return ret;
}
long wolfSSL_BIO_do_handshake(WOLFSSL_BIO *b)
{
WOLFSSL_ENTER("wolfSSL_BIO_do_handshake");
if (b == NULL) {
WOLFSSL_MSG("Bad parameter");
return WOLFSSL_FAILURE;
}
if (b->type == WOLFSSL_BIO_SSL && b->ptr != NULL) {
return wolfSSL_negotiate((WOLFSSL*)b->ptr);
}
else {
WOLFSSL_MSG("Not SSL BIO or no SSL object set");
return WOLFSSL_FAILURE;
}
}
void wolfSSL_BIO_ssl_shutdown(WOLFSSL_BIO* b)
{
WOLFSSL_ENTER("wolfSSL_BIO_ssl_shutdown");
if (b == NULL) {
WOLFSSL_MSG("BIO is null.");
return;
}
while (b != NULL && b->type != WOLFSSL_BIO_SSL) {
b = b->next;
}
if (b == NULL) {
WOLFSSL_MSG("Failed to find SSL BIO in chain.");
return;
}
if (b->ptr != NULL) {
int rc = wolfSSL_shutdown((WOLFSSL*)b->ptr);
if (rc == SSL_SHUTDOWN_NOT_DONE) {
/* In this case, call again to give us a chance to read the
* close notify alert from the other end. */
wolfSSL_shutdown((WOLFSSL*)b->ptr);
}
}
else {
WOLFSSL_MSG("BIO has no SSL pointer set.");
}
}
long wolfSSL_BIO_set_ssl(WOLFSSL_BIO* b, WOLFSSL* ssl, int closeF)
{
long ret = WOLFSSL_FAILURE;
WOLFSSL_ENTER("wolfSSL_BIO_set_ssl");
if (b != NULL) {
b->ptr = ssl;
b->shutdown = (byte)closeF;
if (b->next != NULL)
wolfSSL_set_bio(ssl, b->next, b->next);
/* add to ssl for bio free if SSL_free called before/instead of free_all? */
ret = WOLFSSL_SUCCESS;
}
return ret;
}
long wolfSSL_BIO_get_ssl(WOLFSSL_BIO* bio, WOLFSSL** ssl)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_ssl");
if (bio == NULL) {
WOLFSSL_MSG("bio is null.");
return WOLFSSL_FAILURE;
}
if (ssl == NULL) {
WOLFSSL_MSG("ssl is null.");
return WOLFSSL_FAILURE;
}
if (bio->type != WOLFSSL_BIO_SSL) {
WOLFSSL_MSG("bio type is not WOLFSSL_BIO_SSL.");
return WOLFSSL_FAILURE;
}
*ssl = (WOLFSSL*)bio->ptr;
return WOLFSSL_SUCCESS;
}
WOLFSSL_BIO* wolfSSL_BIO_new_ssl(WOLFSSL_CTX* ctx, int client)
{
WOLFSSL* ssl = NULL;
WOLFSSL_BIO* sslBio = NULL;
int err = 0;
WOLFSSL_ENTER("wolfSSL_BIO_new_ssl");
if (ctx == NULL) {
WOLFSSL_MSG("ctx is NULL.");
err = 1;
}
if (err == 0) {
ssl = wolfSSL_new(ctx);
if (ssl == NULL) {
WOLFSSL_MSG("Failed to create SSL object from ctx.");
err = 1;
}
}
if (err == 0) {
sslBio = wolfSSL_BIO_new(wolfSSL_BIO_f_ssl());
if (sslBio == NULL) {
WOLFSSL_MSG("Failed to create SSL BIO.");
err = 1;
}
}
if (err == 0) {
if (!client)
wolfSSL_set_accept_state(ssl);
else
wolfSSL_set_connect_state(ssl);
}
if (err == 0 && wolfSSL_BIO_set_ssl(sslBio, ssl, BIO_CLOSE) !=
WOLFSSL_SUCCESS) {
WOLFSSL_MSG("Failed to set SSL pointer in BIO.");
err = 1;
}
if (err) {
wolfSSL_free(ssl);
wolfSSL_BIO_free(sslBio);
}
return sslBio;
}
WOLFSSL_BIO* wolfSSL_BIO_new_ssl_connect(WOLFSSL_CTX* ctx)
{
WOLFSSL_BIO* sslBio = NULL;
WOLFSSL_BIO* connBio = NULL;
int err = 0;
WOLFSSL_ENTER("wolfSSL_BIO_new_ssl_connect");
if (ctx == NULL) {
WOLFSSL_MSG("ctx is NULL.");
err = 1;
}
if (err == 0) {
sslBio = wolfSSL_BIO_new_ssl(ctx, 1);
if (sslBio == NULL) {
WOLFSSL_MSG("Failed to create SSL BIO.");
err = 1;
}
}
if (err == 0) {
connBio = wolfSSL_BIO_new(wolfSSL_BIO_s_socket());
if (connBio == NULL) {
WOLFSSL_MSG("Failed to create connect BIO.");
err = 1;
}
else {
wolfSSL_BIO_push(sslBio, connBio);
}
}
if (err == 1) {
wolfSSL_BIO_free(sslBio);
sslBio = NULL;
wolfSSL_BIO_free(connBio);
}
return sslBio;
}
long wolfSSL_BIO_set_conn_hostname(WOLFSSL_BIO* b, char* name)
{
size_t newLen = 0;
WOLFSSL_ENTER("wolfSSL_BIO_set_conn_hostname");
if (name == NULL) {
WOLFSSL_MSG("Hostname is NULL.");
return WOLFSSL_FAILURE;
}
while (b != NULL && b->type != WOLFSSL_BIO_SOCKET) {
b = b->next;
}
if (b == NULL) {
WOLFSSL_MSG("Failed to find socket BIO in chain.");
return WOLFSSL_FAILURE;
}
newLen = XSTRLEN(name);
if (b->ip == NULL) {
/* +1 for null char */
b->ip = (char*)XMALLOC(newLen + 1, b->heap, DYNAMIC_TYPE_OPENSSL);
if (b->ip == NULL) {
WOLFSSL_MSG("Hostname malloc failed.");
return WOLFSSL_FAILURE;
}
}
else {
size_t currLen = XSTRLEN(b->ip);
if (currLen != newLen) {
b->ip = (char*)XREALLOC(b->ip, newLen + 1, b->heap,
DYNAMIC_TYPE_OPENSSL);
if (b->ip == NULL) {
WOLFSSL_MSG("Hostname realloc failed.");
return WOLFSSL_FAILURE;
}
}
}
XMEMCPY(b->ip, name, newLen);
b->ip[newLen] = '\0';
return WOLFSSL_SUCCESS;
}
#ifndef NO_FILESYSTEM
long wolfSSL_BIO_set_fd(WOLFSSL_BIO* b, int fd, int closeF)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_fd");
if (b != NULL) {
b->num = fd;
b->shutdown = (byte)closeF;
}
return WOLFSSL_SUCCESS;
}
#endif
/* Sets the close flag */
int wolfSSL_BIO_set_close(WOLFSSL_BIO *b, long flag)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_close");
if (b != NULL) {
b->shutdown = (byte)flag;
}
return WOLFSSL_SUCCESS;
}
#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000L
WOLFSSL_BIO* wolfSSL_BIO_new(const WOLFSSL_BIO_METHOD* method)
#else
WOLFSSL_BIO* wolfSSL_BIO_new(WOLFSSL_BIO_METHOD* method)
#endif
{
WOLFSSL_BIO* bio;
WOLFSSL_ENTER("wolfSSL_BIO_new");
if (method == NULL) {
WOLFSSL_MSG("Bad method pointer passed in");
return NULL;
}
bio = (WOLFSSL_BIO*) XMALLOC(sizeof(WOLFSSL_BIO), 0,
DYNAMIC_TYPE_OPENSSL);
if (bio) {
XMEMSET(bio, 0, sizeof(WOLFSSL_BIO));
bio->type = (byte)method->type;
#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000L
bio->method = (WOLFSSL_BIO_METHOD*)method;
#else
bio->method = method;
#endif
bio->shutdown = BIO_CLOSE; /* default to close things */
bio->num = WOLFSSL_BIO_ERROR;
bio->init = 1;
#if defined(OPENSSL_ALL) || defined(OPENSSL_EXTRA)
{
int ret;
wolfSSL_RefInit(&bio->ref, &ret);
#ifdef WOLFSSL_REFCNT_ERROR_RETURN
if (ret != 0) {
wolfSSL_BIO_free(bio);
WOLFSSL_MSG("wc_InitMutex failed for WOLFSSL_BIO");
return NULL;
}
#else
(void)ret;
#endif
}
#endif
if (method->type == WOLFSSL_BIO_MEMORY)
bio->eof = WOLFSSL_BIO_ERROR; /* Return value for empty buffer */
if (method->type == WOLFSSL_BIO_MEMORY ||
method->type == WOLFSSL_BIO_BIO) {
bio->mem_buf = wolfSSL_BUF_MEM_new();
if (bio->mem_buf == NULL) {
WOLFSSL_MSG("Memory error");
wolfSSL_BIO_free(bio);
return NULL;
}
}
if (method->type == WOLFSSL_BIO_MD) {
bio->ptr = wolfSSL_EVP_MD_CTX_new();
if (bio->ptr == NULL) {
WOLFSSL_MSG("Memory error");
wolfSSL_BIO_free(bio);
return NULL;
}
}
/* check if is custom method */
if (method->createCb) {
method->createCb(bio);
}
}
return bio;
}
WOLFSSL_BIO* wolfSSL_BIO_new_mem_buf(const void* buf, int len)
{
WOLFSSL_BIO* bio = NULL;
if (buf == NULL) {
return bio;
}
bio = wolfSSL_BIO_new(wolfSSL_BIO_s_mem());
if (bio == NULL) {
return bio;
}
if (len < 0) {
/* The length of the string including terminating null. */
len = (int)XSTRLEN((const char*)buf) + 1;
}
if (len > 0 && wolfSSL_BUF_MEM_resize(bio->mem_buf, len) == 0) {
wolfSSL_BIO_free(bio);
return NULL;
}
bio->num = (int)bio->mem_buf->max;
bio->wrSz = len;
bio->ptr = bio->mem_buf->data;
if (len > 0 && bio->ptr != NULL) {
XMEMCPY(bio->ptr, buf, len);
bio->flags |= BIO_FLAGS_MEM_RDONLY;
bio->wrSzReset = bio->wrSz;
}
return bio;
}
/*
* Note : If the flag BIO_NOCLOSE is set then freeing memory buffers is up
* to the application.
* Returns 1 on success, 0 on failure
*/
int wolfSSL_BIO_free(WOLFSSL_BIO* bio)
{
int ret;
#if defined(OPENSSL_ALL) || defined(OPENSSL_EXTRA)
int doFree = 0;
#endif
/* unchain?, doesn't matter in goahead since from free all */
WOLFSSL_ENTER("wolfSSL_BIO_free");
if (bio) {
if (bio->infoCb) {
/* info callback is called before free */
ret = (int)bio->infoCb(bio, WOLFSSL_BIO_CB_FREE, NULL, 0, 0, 1);
if (ret <= 0) {
return ret;
}
}
#if defined(OPENSSL_ALL) || defined(OPENSSL_EXTRA)
wolfSSL_RefDec(&bio->ref, &doFree, &ret);
if (!doFree) {
/* return success if BIO ref count is not 1 yet */
#ifdef WOLFSSL_REFCNT_ERROR_RETURN
return (ret == 0) ? WOLFSSL_SUCCESS : WOLFSSL_FAILURE ;
#else
(void)ret;
return WOLFSSL_SUCCESS;
#endif
}
#ifndef SINGLE_THREADED
wolfSSL_RefFree(&bio->ref);
#endif
#endif
#ifdef HAVE_EX_DATA_CLEANUP_HOOKS
wolfSSL_CRYPTO_cleanup_ex_data(&bio->ex_data);
#endif
/* call custom set free callback */
if (bio->method && bio->method->freeCb) {
bio->method->freeCb(bio);
}
/* remove from pair by setting the paired bios pair to NULL */
if (bio->pair != NULL) {
bio->pair->pair = NULL;
}
if (bio->ip != NULL) {
XFREE(bio->ip, bio->heap, DYNAMIC_TYPE_OPENSSL);
}
if (bio->shutdown) {
if (bio->type == WOLFSSL_BIO_SSL && bio->ptr)
wolfSSL_free((WOLFSSL*)bio->ptr);
#ifdef CloseSocket
if ((bio->type == WOLFSSL_BIO_SOCKET) && (bio->num > 0))
CloseSocket(bio->num);
#endif
}
#ifndef NO_FILESYSTEM
if (bio->type == WOLFSSL_BIO_FILE && bio->shutdown == BIO_CLOSE) {
if (bio->ptr) {
XFCLOSE((XFILE)bio->ptr);
}
#if !defined(USE_WINDOWS_API) && !defined(NO_WOLFSSL_DIR)\
&& !defined(WOLFSSL_NUCLEUS) && !defined(WOLFSSL_NUCLEUS_1_2)
else if (bio->num != WOLFSSL_BIO_ERROR) {
XCLOSE(bio->num);
}
#endif
}
#endif
if (bio->shutdown != BIO_NOCLOSE) {
if (bio->type == WOLFSSL_BIO_MEMORY && bio->ptr != NULL) {
if (bio->mem_buf != NULL) {
if (bio->mem_buf->data != (char*)bio->ptr) {
XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
bio->ptr = NULL;
}
}
else {
XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
bio->ptr = NULL;
}
}
if (bio->mem_buf != NULL) {
wolfSSL_BUF_MEM_free(bio->mem_buf);
bio->mem_buf = NULL;
}
}
if (bio->type == WOLFSSL_BIO_MD) {
wolfSSL_EVP_MD_CTX_free((WOLFSSL_EVP_MD_CTX*)bio->ptr);
}
XFREE(bio, 0, DYNAMIC_TYPE_OPENSSL);
return WOLFSSL_SUCCESS;
}
return WOLFSSL_FAILURE;
}
/* like BIO_free, but no return value */
void wolfSSL_BIO_vfree(WOLFSSL_BIO* bio)
{
wolfSSL_BIO_free(bio);
}
void wolfSSL_BIO_free_all(WOLFSSL_BIO* bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_free_all");
while (bio) {
WOLFSSL_BIO* next = bio->next;
wolfSSL_BIO_free(bio);
bio = next;
}
}
WOLFSSL_BIO* wolfSSL_BIO_push(WOLFSSL_BIO* top, WOLFSSL_BIO* append)
{
WOLFSSL_ENTER("wolfSSL_BIO_push");
if (top == NULL) {
return append;
}
top->next = append;
if (append != NULL) {
append->prev = top;
}
/* SSL BIO's should use the next object in the chain for IO */
if (top->type == WOLFSSL_BIO_SSL && top->ptr)
wolfSSL_set_bio((WOLFSSL*)top->ptr, append, append);
return top;
}
/* Removes a WOLFSSL_BIO struct from the WOLFSSL_BIO linked list.
*
* bio is the WOLFSSL_BIO struct in the list and removed.
*
* The return WOLFSSL_BIO struct is the next WOLFSSL_BIO in the list or NULL if
* there is none.
*/
WOLFSSL_BIO* wolfSSL_BIO_pop(WOLFSSL_BIO* bio)
{
if (bio == NULL) {
WOLFSSL_MSG("Bad argument passed in");
return NULL;
}
if (bio->prev != NULL) {
bio->prev->next = bio->next;
}
if (bio->next != NULL) {
bio->next->prev = bio->prev;
}
return bio->next;
}
WOLFSSL_BIO_METHOD* wolfSSL_BIO_s_mem(void)
{
static WOLFSSL_BIO_METHOD meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_MEMORY);
WOLFSSL_ENTER("wolfSSL_BIO_s_mem");
return &meth;
}
WOLFSSL_BIO_METHOD* wolfSSL_BIO_f_base64(void)
{
static WOLFSSL_BIO_METHOD meth =
WOLFSSL_BIO_METHOD_INIT(WOLFSSL_BIO_BASE64);
WOLFSSL_ENTER("wolfSSL_BIO_f_base64");
return &meth;
}
/* Set the flag for the bio.
*
* bio the structure to set the flag in
* flags the flag to use
*/
void wolfSSL_BIO_set_flags(WOLFSSL_BIO* bio, int flags)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_flags");
if (bio != NULL) {
bio->flags |= flags;
}
}
void wolfSSL_BIO_clear_flags(WOLFSSL_BIO *bio, int flags)
{
WOLFSSL_ENTER("wolfSSL_BIO_clear_flags");
if (bio != NULL) {
bio->flags &= ~flags;
}
}
/* Set ex_data for WOLFSSL_BIO
*
* bio : BIO structure to set ex_data in
* idx : Index of ex_data to set
* data : Data to set in ex_data
*
* Returns WOLFSSL_SUCCESS on success or WOLFSSL_FAILURE on failure
*/
int wolfSSL_BIO_set_ex_data(WOLFSSL_BIO *bio, int idx, void *data)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_ex_data");
#ifdef HAVE_EX_DATA
if (bio != NULL && idx < MAX_EX_DATA) {
return wolfSSL_CRYPTO_set_ex_data(&bio->ex_data, idx, data);
}
#else
(void)bio;
(void)idx;
(void)data;
#endif
return WOLFSSL_FAILURE;
}
int wolfSSL_BIO_get_fd(WOLFSSL_BIO *bio, int* fd)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_fd");
if (bio != NULL) {
if (fd != NULL)
*fd = bio->num;
return bio->num;
}
return WOLFSSL_BIO_ERROR;
}
#ifdef HAVE_EX_DATA_CLEANUP_HOOKS
/* Set ex_data for WOLFSSL_BIO
*
* bio : BIO structure to set ex_data in
* idx : Index of ex_data to set
* data : Data to set in ex_data
* cleanup_routine : Function pointer to clean up data
*
* Returns WOLFSSL_SUCCESS on success or WOLFSSL_FAILURE on failure
*/
int wolfSSL_BIO_set_ex_data_with_cleanup(
WOLFSSL_BIO *bio,
int idx,
void *data,
wolfSSL_ex_data_cleanup_routine_t cleanup_routine)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_ex_data_with_cleanup");
if (bio != NULL && idx < MAX_EX_DATA) {
return wolfSSL_CRYPTO_set_ex_data_with_cleanup(&bio->ex_data, idx, data,
cleanup_routine);
}
return WOLFSSL_FAILURE;
}
#endif /* HAVE_EX_DATA_CLEANUP_HOOKS */
/* Get ex_data in WOLFSSL_BIO at given index
*
* bio : BIO structure to get ex_data from
* idx : Index of ex_data to get data from
*
* Returns void pointer to ex_data on success or NULL on failure
*/
void *wolfSSL_BIO_get_ex_data(WOLFSSL_BIO *bio, int idx)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_ex_data");
#ifdef HAVE_EX_DATA
if (bio != NULL && idx < MAX_EX_DATA && idx >= 0) {
return wolfSSL_CRYPTO_get_ex_data(&bio->ex_data, idx);
}
#else
(void)bio;
(void)idx;
#endif
return NULL;
}
#endif /* OPENSSL_EXTRA */
#ifndef NO_FILESYSTEM
PRAGMA_CLANG_DIAG_PUSH
PRAGMA_CLANG("clang diagnostic ignored \"-Wformat-nonliteral\"")
#endif
#if defined(OPENSSL_EXTRA)
/* returns amount printed on success, negative in fail case */
#ifdef __clang__
/* tell clang argument 2 is format */
__attribute__((__format__ (__printf__, 2, 0)))
#endif
int wolfSSL_BIO_vprintf(WOLFSSL_BIO* bio, const char* format, va_list args)
{
int ret = -1;
if (bio == NULL)
return WOLFSSL_FATAL_ERROR;
switch (bio->type) {
#if !defined(NO_FILESYSTEM)
case WOLFSSL_BIO_FILE:
if (bio->ptr == NULL) {
return -1;
}
ret = XVFPRINTF((XFILE)bio->ptr, format, args);
break;
#endif
case WOLFSSL_BIO_MEMORY:
/* In Visual Studio versions prior to Visual Studio 2013, the va_* symbols
aren't defined. If using Visual Studio 2013 or later, define
HAVE_VA_COPY. */
#if !defined(_WIN32) || defined(HAVE_VA_COPY)
case WOLFSSL_BIO_SSL:
{
int count;
char* pt = NULL;
va_list copy;
#ifdef FUSION_RTOS
copy = args; /* hack, depends on internal implementation
* of va_list in VisualDSP++ */
#else
va_copy(copy, args);
#endif
count = XVSNPRINTF(NULL, 0, format, args);
if (count >= 0)
{
pt = (char*)XMALLOC(count + 1, bio->heap,
DYNAMIC_TYPE_TMP_BUFFER);
if (pt != NULL)
{
count = XVSNPRINTF(pt, count + 1, format, copy);
if (count >= 0)
{
ret = wolfSSL_BIO_write(bio, pt, count);
}
XFREE(pt, bio->heap, DYNAMIC_TYPE_TMP_BUFFER);
}
}
va_end(copy);
}
break;
#endif /* !_WIN32 || HAVE_VA_COPY */
default:
WOLFSSL_MSG("Unsupported WOLFSSL_BIO type for wolfSSL_BIO_printf");
break;
}
return ret;
}
/* returns amount printed on success, negative in fail case */
#ifdef __clang__
/* tell clang argument 2 is format */
__attribute__((__format__ (__printf__, 2, 0)))
#endif
int wolfSSL_BIO_printf(WOLFSSL_BIO* bio, const char* format, ...)
{
int ret;
va_list args;
va_start(args, format);
ret = wolfSSL_BIO_vprintf(bio, format, args);
va_end(args);
return ret;
}
#ifndef NO_FILESYSTEM
PRAGMA_CLANG_DIAG_POP
#endif
#undef BIO_DUMP_LINE_LEN
#define BIO_DUMP_LINE_LEN 16
int wolfSSL_BIO_dump(WOLFSSL_BIO *bio, const char *buf, int length)
{
int ret = 0;
#ifndef NO_FILESYSTEM
int lineOffset = 0;
#endif
if (bio == NULL)
return 0;
#ifndef NO_FILESYSTEM
do
{
int i;
char line[80];
int o;
if (!buf) {
return wolfSSL_BIO_write(bio, "\tNULL", 5);
}
XSPRINTF(line, "%04x - ", lineOffset);
o = 7;
for (i = 0; i < BIO_DUMP_LINE_LEN; i++) {
if (i < length)
XSPRINTF(line + o,"%02x ", (unsigned char)buf[i]);
else
XSPRINTF(line + o, " ");
if (i == 7)
XSPRINTF(line + o + 2, "-");
o += 3;
}
XSPRINTF(line + o, " ");
o += 2;
for (i = 0; (i < BIO_DUMP_LINE_LEN) && (i < length); i++) {
XSPRINTF(line + o, "%c",
((31 < buf[i]) && (buf[i] < 127)) ? buf[i] : '.');
o++;
}
line[o++] = '\n';
ret += wolfSSL_BIO_write(bio, line, o);
buf += BIO_DUMP_LINE_LEN;
length -= BIO_DUMP_LINE_LEN;
lineOffset += BIO_DUMP_LINE_LEN;
}
while (length > 0);
#else
(void)buf;
(void)length;
#endif
return ret;
}
#endif /* OPENSSL_EXTRA */
#if defined(OPENSSL_EXTRA) || defined(HAVE_LIGHTY) || \
defined(WOLFSSL_MYSQL_COMPATIBLE) || defined(HAVE_STUNNEL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_POCO_LIB) || \
defined(WOLFSSL_HAPROXY)
int wolfSSL_BIO_read_filename(WOLFSSL_BIO *b, const char *name) {
#ifndef NO_FILESYSTEM
XFILE fp;
WOLFSSL_ENTER("wolfSSL_BIO_new_file");
if ((wolfSSL_BIO_get_fp(b, &fp) == WOLFSSL_SUCCESS) && (fp != XBADFILE))
{
XFCLOSE(fp);
}
fp = XFOPEN(name, "rb");
if (fp == XBADFILE)
return WOLFSSL_BAD_FILE;
if (wolfSSL_BIO_set_fp(b, fp, BIO_CLOSE) != WOLFSSL_SUCCESS) {
XFCLOSE(fp);
return WOLFSSL_BAD_FILE;
}
/* file is closed when bio is free'd */
return WOLFSSL_SUCCESS;
#else
(void)name;
(void)b;
return WOLFSSL_NOT_IMPLEMENTED;
#endif
}
#endif
#if defined(HAVE_LIGHTY) || defined(HAVE_STUNNEL) \
|| defined(WOLFSSL_MYSQL_COMPATIBLE) || defined(OPENSSL_EXTRA)
WOLFSSL_BIO *wolfSSL_BIO_new_file(const char *filename, const char *mode)
{
#ifndef NO_FILESYSTEM
WOLFSSL_BIO* bio;
XFILE fp;
WOLFSSL_ENTER("wolfSSL_BIO_new_file");
fp = XFOPEN(filename, mode);
if (fp == XBADFILE)
return NULL;
bio = wolfSSL_BIO_new(wolfSSL_BIO_s_file());
if (bio == NULL) {
XFCLOSE(fp);
return bio;
}
if (wolfSSL_BIO_set_fp(bio, fp, BIO_CLOSE) != WOLFSSL_SUCCESS) {
XFCLOSE(fp);
wolfSSL_BIO_free(bio);
bio = NULL;
}
/* file is closed when BIO is free'd */
return bio;
#else
(void)filename;
(void)mode;
return NULL;
#endif /* NO_FILESYSTEM */
}
#ifndef NO_FILESYSTEM
WOLFSSL_BIO* wolfSSL_BIO_new_fp(XFILE fp, int close_flag)
{
WOLFSSL_BIO* bio;
WOLFSSL_ENTER("wolfSSL_BIO_new_fp");
bio = wolfSSL_BIO_new(wolfSSL_BIO_s_file());
if (bio == NULL) {
return bio;
}
if (wolfSSL_BIO_set_fp(bio, fp, close_flag) != WOLFSSL_SUCCESS) {
wolfSSL_BIO_free(bio);
bio = NULL;
}
/* file is closed when BIO is free'd or by user depending on flag */
return bio;
}
#endif
#endif
#if defined(OPENSSL_ALL) || defined(WOLFSSL_ASIO) || defined(WOLFSSL_HAPROXY) \
|| defined(WOLFSSL_NGINX) || defined(WOLFSSL_QT)
/* Creates a new bio pair.
Returns WOLFSSL_SUCCESS if no error, WOLFSSL_FAILURE otherwise.*/
int wolfSSL_BIO_new_bio_pair(WOLFSSL_BIO **bio1_p, size_t writebuf1,
WOLFSSL_BIO **bio2_p, size_t writebuf2)
{
WOLFSSL_BIO *bio1 = NULL, *bio2 = NULL;
int ret = 1;
WOLFSSL_ENTER("wolfSSL_BIO_new_bio_pair");
if (bio1_p == NULL || bio2_p == NULL) {
WOLFSSL_MSG("Bad Function Argument");
return BAD_FUNC_ARG;
}
/* set up the new bio structures and write buf sizes */
if ((bio1 = wolfSSL_BIO_new(wolfSSL_BIO_s_bio())) == NULL) {
WOLFSSL_MSG("Bio allocation failed");
ret = WOLFSSL_FAILURE;
}
if (ret) {
if ((bio2 = wolfSSL_BIO_new(wolfSSL_BIO_s_bio())) == NULL) {
WOLFSSL_MSG("Bio allocation failed");
ret = WOLFSSL_FAILURE;
}
}
if (ret && writebuf1) {
if (!(ret = wolfSSL_BIO_set_write_buf_size(bio1, (long)writebuf1))) {
WOLFSSL_MSG("wolfSSL_BIO_set_write_buf() failure");
}
}
if (ret && writebuf2) {
if (!(ret = wolfSSL_BIO_set_write_buf_size(bio2, (long)writebuf2))) {
WOLFSSL_MSG("wolfSSL_BIO_set_write_buf() failure");
}
}
if (ret) {
if ((ret = wolfSSL_BIO_make_bio_pair(bio1, bio2))) {
*bio1_p = bio1;
*bio2_p = bio2;
}
}
if (!ret) {
wolfSSL_BIO_free(bio1);
bio1 = NULL;
wolfSSL_BIO_free(bio2);
bio2 = NULL;
}
return ret;
}
#endif
#ifdef OPENSSL_ALL
#ifndef NO_WOLFSSL_STUB
void wolfSSL_BIO_set_init(WOLFSSL_BIO* bio, int init)
{
WOLFSSL_STUB("wolfSSL_BIO_set_init");
(void)bio;
(void)init;
}
#endif /* NO_WOLFSSL_STUB */
void wolfSSL_BIO_set_shutdown(WOLFSSL_BIO* bio, int shut)
{
WOLFSSL_ENTER("wolfSSL_BIO_set_shutdown");
if (bio != NULL)
bio->shutdown = (byte)shut;
}
int wolfSSL_BIO_get_shutdown(WOLFSSL_BIO* bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_get_shutdown");
return bio != NULL && bio->shutdown;
}
void wolfSSL_BIO_clear_retry_flags(WOLFSSL_BIO* bio)
{
WOLFSSL_ENTER("wolfSSL_BIO_clear_retry_flags");
if (bio)
bio->flags &= ~(WOLFSSL_BIO_FLAG_READ | WOLFSSL_BIO_FLAG_WRITE |
WOLFSSL_BIO_FLAG_RETRY);
}
int wolfSSL_BIO_should_retry(WOLFSSL_BIO *bio)
{
int ret = 0;
if (bio != NULL) {
ret = (int)(bio->flags & WOLFSSL_BIO_FLAG_RETRY);
}
return ret;
}
int wolfSSL_BIO_should_read(WOLFSSL_BIO *bio)
{
int ret = 0;
if (bio != NULL) {
ret = (int)(bio->flags & WOLFSSL_BIO_FLAG_READ);
}
return ret;
}
int wolfSSL_BIO_should_write(WOLFSSL_BIO *bio)
{
int ret = 0;
if (bio != NULL) {
ret = (int)(bio->flags & WOLFSSL_BIO_FLAG_WRITE);
}
return ret;
}
#endif /* OPENSSL_ALL */
#endif /* WOLFSSL_BIO_INCLUDED */
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