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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 sz1;
- int sz2;
- char* pt;
- if (buf == NULL || len == 0)
- return 0;
- sz1 = wolfSSL_BIO_nread(bio, &pt, len);
- if (sz1 > 0) {
- XMEMCPY(buf, pt, sz1);
- buf = (char*)buf + sz1;
- len -= sz1;
- if (len > 0) {
- /* try again to see if maybe we wrapped around the ring buffer */
- sz2 = wolfSSL_BIO_nread(bio, &pt, len);
- if (sz2 > 0) {
- XMEMCPY(buf, pt, sz2);
- sz1 += sz2;
- }
- }
- }
- if (sz1 == 0)
- sz1 = -1;
- return sz1;
- }
- #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 sz1;
- int sz2;
- char* buf;
- WOLFSSL_ENTER("wolfSSL_BIO_BIO_write");
- /* adding in sanity checks for static analysis tools */
- if (bio == NULL || data == NULL || len == 0)
- return 0;
- sz1 = wolfSSL_BIO_nwrite(bio, &buf, len);
- if (sz1 == 0) {
- WOLFSSL_MSG("No room left to write");
- return WOLFSSL_BIO_ERROR;
- }
- if (sz1 < 0) {
- WOLFSSL_MSG("Error in wolfSSL_BIO_nwrite");
- return sz1;
- }
- XMEMCPY(buf, data, sz1);
- data = (char*)data + sz1;
- len -= sz1;
- if (len > 0) {
- /* try again to see if maybe we wrapped around the ring buffer */
- sz2 = wolfSSL_BIO_nwrite(bio, &buf, len);
- if (sz2 > 0) {
- XMEMCPY(buf, data, sz2);
- sz1 += sz2;
- }
- }
- return sz1;
- }
- /* 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 -2;
- }
- /* 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 -2;
- }
- /* 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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