[457] | 1 | /* bio.c
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| 2 | *
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| 3 | * Copyright (C) 2006-2020 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 | #include <wolfssl/wolfcrypt/settings.h>
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| 23 |
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| 24 | #if !defined(WOLFSSL_BIO_INCLUDED)
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| 25 | #ifndef WOLFSSL_IGNORE_FILE_WARN
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| 26 | #warning bio.c does not need to be compiled separately from ssl.c
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| 27 | #endif
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| 28 | #else
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| 29 |
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| 30 |
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| 31 | /* Helper function to decode a base64 input
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| 32 | *
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| 33 | * returns size of resulting buffer on success
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| 34 | */
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| 35 | static int wolfSSL_BIO_BASE64_read(WOLFSSL_BIO* bio, void* buf, int len)
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| 36 | {
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| 37 | word32 frmtSz = len;
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| 38 |
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| 39 | WOLFSSL_ENTER("wolfSSL_BIO_BASE64_read");
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| 40 |
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| 41 | if (Base64_Decode((const byte*)buf, (word32)len, (byte*)buf, &frmtSz) !=0) {
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| 42 | WOLFSSL_MSG("Err doing base64 decode");
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| 43 | return SSL_FATAL_ERROR;
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| 44 | }
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| 45 |
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| 46 | (void)bio;
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| 47 | return (int)frmtSz;
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| 48 | }
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| 49 |
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| 50 |
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| 51 | /* Helper function to read from WOLFSSL_BIO_BIO type
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| 52 | *
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| 53 | * returns amount in bytes read on success
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| 54 | */
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| 55 | static int wolfSSL_BIO_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
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| 56 | {
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| 57 | int sz;
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| 58 | char* pt;
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| 59 |
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| 60 | sz = wolfSSL_BIO_nread(bio, &pt, len);
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| 61 |
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| 62 | if (sz > 0) {
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| 63 | XMEMCPY(buf, pt, sz);
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| 64 | }
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| 65 |
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| 66 | return sz;
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| 67 | }
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| 68 |
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| 69 |
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| 70 | /* Handles reading from a memory type BIO and advancing the state.
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| 71 | *
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| 72 | * bio WOLFSSL_BIO to read from
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| 73 | * buf buffer to put data from bio in
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| 74 | * len amount of data to be read
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| 75 | *
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| 76 | * returns size read on success
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| 77 | */
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| 78 | static int wolfSSL_BIO_MEMORY_read(WOLFSSL_BIO* bio, void* buf, int len)
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| 79 | {
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| 80 | int sz;
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| 81 | WOLFSSL_ENTER("wolfSSL_BIO_MEMORY_read");
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| 82 |
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| 83 | sz = wolfSSL_BIO_pending(bio);
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| 84 | if (sz > 0) {
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| 85 | const unsigned char* pt = NULL;
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| 86 | int memSz;
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| 87 |
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| 88 | if (sz > len) {
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| 89 | sz = len;
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| 90 | }
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| 91 | memSz = wolfSSL_BIO_get_mem_data(bio, (void*)&pt);
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| 92 | if (memSz >= sz && pt != NULL) {
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| 93 | byte* tmp;
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| 94 |
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| 95 | XMEMCPY(buf, (void*)pt, sz);
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| 96 | if (memSz - sz > 0) {
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| 97 | tmp = (byte*)XMALLOC(memSz-sz, bio->heap, DYNAMIC_TYPE_OPENSSL);
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| 98 | if (tmp == NULL) {
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| 99 | WOLFSSL_MSG("Memory error");
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| 100 | return WOLFSSL_BIO_ERROR;
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| 101 | }
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| 102 | XMEMCPY(tmp, (void*)(pt + sz), memSz - sz);
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| 103 |
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| 104 | /* reset internal bio->mem */
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| 105 | XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
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| 106 | bio->ptr = tmp;
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| 107 | bio->num = memSz-sz;
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| 108 | if (bio->mem_buf != NULL) {
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| 109 | bio->mem_buf->data = (char*)bio->ptr;
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| 110 | bio->mem_buf->length = bio->num;
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| 111 | }
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| 112 | }
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| 113 | bio->wrSz -= sz;
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| 114 | }
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| 115 | else {
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| 116 | WOLFSSL_MSG("Issue with getting bio mem pointer");
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| 117 | return 0;
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| 118 | }
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| 119 | }
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| 120 | else {
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| 121 | return WOLFSSL_BIO_ERROR;
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| 122 | }
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| 123 |
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| 124 | return sz;
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| 125 | }
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| 126 |
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| 127 | #ifndef WOLFCRYPT_ONLY
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| 128 | /* Helper function to read from WOLFSSL_BIO_SSL type
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| 129 | *
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| 130 | * returns the number of bytes read on success
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| 131 | */
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| 132 | static int wolfSSL_BIO_SSL_read(WOLFSSL_BIO* bio, void* buf,
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| 133 | int len, WOLFSSL_BIO* front)
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| 134 | {
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| 135 | int ret;
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| 136 |
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| 137 | WOLFSSL_ENTER("wolfSSL_BIO_SSL_read");
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| 138 |
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| 139 | /* already got eof, again is error */
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| 140 | if ((front == NULL) || front->eof)
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| 141 | return WOLFSSL_FATAL_ERROR;
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| 142 |
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| 143 | bio->flags &= ~(WOLFSSL_BIO_FLAG_RETRY); /* default no retry */
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| 144 | ret = wolfSSL_read((WOLFSSL*)bio->ptr, buf, len);
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| 145 | if (ret == 0)
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| 146 | front->eof = 1;
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| 147 | else if (ret < 0) {
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| 148 | int err = wolfSSL_get_error((WOLFSSL*)bio->ptr, 0);
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| 149 | if ( !(err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE) ) {
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| 150 | front->eof = 1;
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| 151 | }
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| 152 | else {
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| 153 | bio->flags |= WOLFSSL_BIO_FLAG_RETRY; /* should retry */
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| 154 | }
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| 155 | }
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| 156 |
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| 157 | return ret;
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| 158 | }
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| 159 |
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| 160 | static int wolfSSL_BIO_MD_read(WOLFSSL_BIO* bio, void* buf, int sz)
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| 161 | {
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| 162 | int ret = sz;
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| 163 |
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| 164 | if (wolfSSL_EVP_MD_CTX_type((WOLFSSL_EVP_MD_CTX*)bio->ptr) == NID_hmac) {
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| 165 | if (wolfSSL_EVP_DigestSignUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, buf,
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| 166 | sz) != WOLFSSL_SUCCESS)
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| 167 | {
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| 168 | ret = WOLFSSL_FATAL_ERROR;
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| 169 | }
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| 170 | }
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| 171 | else {
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| 172 | if (wolfSSL_EVP_DigestUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, buf, ret)
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| 173 | != WOLFSSL_SUCCESS) {
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| 174 | ret = WOLFSSL_FATAL_ERROR;
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| 175 | }
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| 176 | }
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| 177 | return ret;
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| 178 | }
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| 179 | #endif /* WOLFCRYPT_ONLY */
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| 180 |
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| 181 |
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| 182 | /* Used to read data from a WOLFSSL_BIO structure
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| 183 | *
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| 184 | * bio structure to read data from
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| 185 | * buf buffer to hold the result
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| 186 | * len length of buf buffer
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| 187 | *
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| 188 | * returns the number of bytes read on success
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| 189 | */
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| 190 | int wolfSSL_BIO_read(WOLFSSL_BIO* bio, void* buf, int len)
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| 191 | {
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| 192 | int ret = 0;
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| 193 | WOLFSSL_BIO* front = bio;
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| 194 | int sz = 0;
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| 195 |
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| 196 | WOLFSSL_ENTER("wolfSSL_BIO_read");
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| 197 |
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| 198 | /* info cb, abort if user returns <= 0*/
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| 199 | if (front != NULL && front->infoCb != NULL) {
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| 200 | ret = (int)front->infoCb(front, WOLFSSL_BIO_CB_READ, (const char*)buf,
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| 201 | len, 0, 1);
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| 202 | if (ret <= 0) {
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| 203 | return ret;
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| 204 | }
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| 205 | }
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| 206 |
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| 207 | /* start at end of list and work backwards */
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| 208 | while ((bio != NULL) && (bio->next != NULL)) {
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| 209 | bio = bio->next;
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| 210 | }
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| 211 |
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| 212 | while (bio != NULL && ret >= 0) {
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| 213 | /* check for custom read */
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| 214 | if (bio->method && bio->method->readCb) {
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| 215 | ret = bio->method->readCb(bio, (char*)buf, len);
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| 216 | }
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| 217 |
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| 218 | /* formatting data */
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| 219 | if (bio->type == WOLFSSL_BIO_BASE64 && ret > 0 && sz > 0) {
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| 220 | ret = wolfSSL_BIO_BASE64_read(bio, buf, sz);
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| 221 | }
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| 222 |
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| 223 | /* write BIOs */
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| 224 | if (bio && bio->type == WOLFSSL_BIO_BIO) {
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| 225 | ret = wolfSSL_BIO_BIO_read(bio, buf, len);
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| 226 | }
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| 227 |
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| 228 | if (bio && bio->type == WOLFSSL_BIO_MEMORY) {
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| 229 | ret = wolfSSL_BIO_MEMORY_read(bio, buf, len);
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| 230 | }
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| 231 |
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| 232 | #ifndef NO_FILESYSTEM
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| 233 | if (bio && bio->type == WOLFSSL_BIO_FILE) {
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| 234 | ret = (int)XFREAD(buf, 1, len, (XFILE)bio->ptr);
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| 235 | }
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| 236 | #endif
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| 237 |
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| 238 | #ifndef WOLFCRYPT_ONLY
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| 239 | if (bio && bio->type == WOLFSSL_BIO_SSL) {
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| 240 | ret = wolfSSL_BIO_SSL_read(bio, buf, len, front);
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| 241 | }
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| 242 |
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| 243 | /* data passing through BIO MD wrapper */
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| 244 | if (bio && bio->type == WOLFSSL_BIO_MD && ret > 0) {
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| 245 | ret = wolfSSL_BIO_MD_read(bio, buf, ret);
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| 246 | }
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| 247 | #endif
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| 248 |
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| 249 | /* case where front of list is done */
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| 250 | if (bio == front) {
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| 251 | break; /* at front of list so be done */
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| 252 | }
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| 253 |
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| 254 | if (ret > 0) {
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| 255 | sz = ret; /* adjust size for formatting */
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| 256 | }
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| 257 |
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| 258 | /* previous WOLFSSL_BIO in list working towards head of list */
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| 259 | bio = bio->prev;
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| 260 | }
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| 261 |
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| 262 | /* info cb, user can override return value */
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| 263 | if (front != NULL && front->infoCb != NULL) {
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| 264 | ret = (int)front->infoCb(front,
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| 265 | WOLFSSL_BIO_CB_READ | WOLFSSL_BIO_CB_RETURN,
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| 266 | (const char*)buf, len, 0, ret);
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| 267 | }
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| 268 |
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| 269 | return ret;
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| 270 | }
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| 271 |
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| 272 |
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| 273 | /* Converts data into base64 output
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| 274 | *
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| 275 | * returns the resulting buffer size on success.
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| 276 | */
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| 277 | static int wolfSSL_BIO_BASE64_write(WOLFSSL_BIO* bio, const void* data,
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| 278 | word32 inLen, byte* out, word32* outLen)
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| 279 | {
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| 280 | byte* tmp = NULL;
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| 281 | int ret = 0;
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| 282 |
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| 283 | WOLFSSL_ENTER("wolfSSL_BIO_BASE64_write");
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| 284 |
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| 285 | if (bio == NULL || data == NULL || out == NULL || outLen == NULL) {
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| 286 | return BAD_FUNC_ARG;
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| 287 | }
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| 288 |
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| 289 | #if defined(WOLFSSL_BASE64_ENCODE)
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| 290 | tmp = (byte*)XMALLOC(*outLen, bio->heap, DYNAMIC_TYPE_TMP_BUFFER);
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| 291 | if (tmp == NULL) {
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| 292 | return WOLFSSL_FATAL_ERROR;
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| 293 | }
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| 294 |
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| 295 | if ((bio->flags & WOLFSSL_BIO_FLAG_BASE64_NO_NL) ==
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| 296 | WOLFSSL_BIO_FLAG_BASE64_NO_NL) {
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| 297 | if (Base64_Encode_NoNl((const byte*)data, inLen,
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| 298 | tmp, outLen) < 0) {
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| 299 | ret = WOLFSSL_FATAL_ERROR;
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| 300 | }
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| 301 | }
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| 302 | else {
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| 303 | if (Base64_Encode((const byte*)data, inLen,
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| 304 | tmp, outLen) < 0) {
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| 305 | ret = WOLFSSL_FATAL_ERROR;
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| 306 | }
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| 307 | }
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| 308 |
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| 309 | if (ret != WOLFSSL_FATAL_ERROR) {
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| 310 | ret = (int) inLen;
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| 311 | XMEMCPY(out, tmp, *outLen);
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| 312 |
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| 313 | }
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| 314 | XFREE(tmp, bio->heap, DYNAMIC_TYPE_TMP_BUFFER);
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| 315 | #else
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| 316 | (void)bio;
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| 317 | (void)data;
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| 318 | (void)inLen;
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| 319 | (void)out;
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| 320 | (void)outLen;
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| 321 | (void)tmp;
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| 322 | WOLFSSL_MSG("BASE64 encoding not compiled in");
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| 323 | #endif
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| 324 | return ret;
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| 325 | }
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| 326 |
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| 327 |
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| 328 | #ifndef WOLFCRYPT_ONLY
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| 329 | /* Helper function for writing to a WOLFSSL_BIO_SSL type
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| 330 | *
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| 331 | * returns the amount written in bytes on success
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| 332 | */
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| 333 | static int wolfSSL_BIO_SSL_write(WOLFSSL_BIO* bio, const void* data,
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| 334 | int len, WOLFSSL_BIO* front)
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| 335 | {
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| 336 | int ret;
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| 337 |
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| 338 | WOLFSSL_ENTER("wolfSSL_BIO_SSL_write");
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| 339 |
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| 340 | if (bio->ptr == NULL) {
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| 341 | return BAD_FUNC_ARG;
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| 342 | }
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| 343 |
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| 344 | bio->flags &= ~(WOLFSSL_BIO_FLAG_RETRY); /* default no retry */
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| 345 | ret = wolfSSL_write((WOLFSSL*)bio->ptr, data, len);
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| 346 | if (ret == 0)
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| 347 | front->eof = 1;
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| 348 | else if (ret < 0) {
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| 349 | int err = wolfSSL_get_error((WOLFSSL*)bio->ptr, 0);
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| 350 | if ( !(err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE) ) {
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| 351 | front->eof = 1;
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| 352 | }
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| 353 | else {
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| 354 | bio->flags |= WOLFSSL_BIO_FLAG_RETRY; /* should retry */
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| 355 | }
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| 356 | }
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| 357 | return ret;
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| 358 | }
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| 359 | #endif /* WOLFCRYPT_ONLY */
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| 360 |
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| 361 |
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| 362 | /* Writes to a WOLFSSL_BIO_BIO type.
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| 363 | *
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| 364 | * returns the amount written on success
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| 365 | */
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| 366 | static int wolfSSL_BIO_BIO_write(WOLFSSL_BIO* bio, const void* data,
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| 367 | int len)
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| 368 | {
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| 369 | int sz;
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| 370 | char* buf;
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| 371 |
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| 372 | WOLFSSL_ENTER("wolfSSL_BIO_BIO_write");
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| 373 |
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| 374 | /* adding in sanity checks for static analysis tools */
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| 375 | if (bio == NULL || data == NULL) {
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| 376 | return BAD_FUNC_ARG;
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| 377 | }
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| 378 |
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| 379 | sz = wolfSSL_BIO_nwrite(bio, &buf, len);
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| 380 |
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| 381 | /* test space for write */
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| 382 | if (sz <= 0) {
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| 383 | WOLFSSL_MSG("No room left to write");
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| 384 | return sz;
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| 385 | }
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| 386 |
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| 387 | XMEMCPY(buf, data, sz);
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| 388 |
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| 389 | return sz;
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| 390 | }
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| 391 |
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| 392 |
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| 393 | /* for complete compatibility a bio memory write allocs its own memory
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| 394 | * until the application runs out ....
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| 395 | *
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| 396 | * bio structure to hold incoming data
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| 397 | * data buffer holding the data to be written
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| 398 | * len length of data buffer
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| 399 | *
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| 400 | * returns the amount of data written on success and WOLFSSL_FAILURE or
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| 401 | * WOLFSSL_BIO_ERROR for failure cases.
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| 402 | */
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| 403 | static int wolfSSL_BIO_MEMORY_write(WOLFSSL_BIO* bio, const void* data,
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| 404 | int len)
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| 405 | {
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| 406 | int sz;
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| 407 | const unsigned char* buf;
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| 408 |
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| 409 | WOLFSSL_ENTER("wolfSSL_BIO_MEMORY_write");
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| 410 |
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| 411 | if (bio == NULL || data == NULL) {
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| 412 | return BAD_FUNC_ARG;
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| 413 | }
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| 414 |
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| 415 | sz = wolfSSL_BIO_pending(bio);
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| 416 | if (sz < 0) {
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| 417 | WOLFSSL_MSG("Error getting memory data");
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| 418 | return sz;
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| 419 | }
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| 420 |
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| 421 | if (bio->ptr == NULL) {
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| 422 | bio->ptr = (byte*)XMALLOC(len, bio->heap, DYNAMIC_TYPE_OPENSSL);
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| 423 | if (bio->ptr == NULL) {
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| 424 | WOLFSSL_MSG("Error on malloc");
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| 425 | return WOLFSSL_FAILURE;
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| 426 | }
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| 427 | bio->num = len;
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| 428 | if (bio->mem_buf != NULL) {
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| 429 | bio->mem_buf->data = (char*)bio->ptr;
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| 430 | bio->mem_buf->length = bio->num;
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| 431 | }
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| 432 | }
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| 433 |
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| 434 | /* check if will fit in current buffer size */
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| 435 | if (wolfSSL_BIO_get_mem_data(bio, (void*)&buf) < 0) {
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| 436 | return WOLFSSL_BIO_ERROR;
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| 437 | }
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| 438 | if (bio->num < sz + len) {
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| 439 | bio->ptr = (byte*)XREALLOC(bio->ptr, sz + len, bio->heap,
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| 440 | DYNAMIC_TYPE_OPENSSL);
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| 441 | if (bio->ptr == NULL) {
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| 442 | WOLFSSL_MSG("Error on realloc");
|
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| 443 | return WOLFSSL_FAILURE;
|
---|
| 444 | }
|
---|
| 445 | bio->num = sz + len;
|
---|
| 446 | if (bio->mem_buf != NULL) {
|
---|
| 447 | bio->mem_buf->data = (char*)bio->ptr;
|
---|
| 448 | bio->mem_buf->length = bio->num;
|
---|
| 449 | }
|
---|
| 450 | }
|
---|
| 451 |
|
---|
| 452 | XMEMCPY((byte*)bio->ptr + sz, data, len);
|
---|
| 453 | bio->wrSz += len;
|
---|
| 454 |
|
---|
| 455 | return len;
|
---|
| 456 | }
|
---|
| 457 |
|
---|
| 458 |
|
---|
| 459 | #ifndef WOLFCRYPT_ONLY
|
---|
| 460 | /* Helper function for writing to a WOLFSSL_BIO_MD type
|
---|
| 461 | *
|
---|
| 462 | * returns the amount written in bytes on success (0)
|
---|
| 463 | */
|
---|
| 464 | static int wolfSSL_BIO_MD_write(WOLFSSL_BIO* bio, const void* data, int len)
|
---|
| 465 | {
|
---|
| 466 | int ret = 0;
|
---|
| 467 |
|
---|
| 468 | if (bio == NULL || data == NULL) {
|
---|
| 469 | return BAD_FUNC_ARG;
|
---|
| 470 | }
|
---|
| 471 |
|
---|
| 472 | if (wolfSSL_EVP_MD_CTX_type((WOLFSSL_EVP_MD_CTX*)bio->ptr) == NID_hmac) {
|
---|
| 473 | if (wolfSSL_EVP_DigestSignUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, data,
|
---|
| 474 | len) != WOLFSSL_SUCCESS) {
|
---|
| 475 | ret = WOLFSSL_BIO_ERROR;
|
---|
| 476 | }
|
---|
| 477 | }
|
---|
| 478 | else {
|
---|
| 479 | if (wolfSSL_EVP_DigestUpdate((WOLFSSL_EVP_MD_CTX*)bio->ptr, data, len)
|
---|
| 480 | != WOLFSSL_SUCCESS) {
|
---|
| 481 | ret = WOLFSSL_BIO_ERROR;
|
---|
| 482 | }
|
---|
| 483 | }
|
---|
| 484 | return ret;
|
---|
| 485 | }
|
---|
| 486 | #endif /* WOLFCRYPT_ONLY */
|
---|
| 487 |
|
---|
| 488 |
|
---|
| 489 | /* Writes data to a WOLFSSL_BIO structure
|
---|
| 490 | *
|
---|
| 491 | * bio structure to write to
|
---|
| 492 | * data holds the data to be written
|
---|
| 493 | * len length of data buffer
|
---|
| 494 | *
|
---|
| 495 | * returns the amount written in bytes on success
|
---|
| 496 | */
|
---|
| 497 | int wolfSSL_BIO_write(WOLFSSL_BIO* bio, const void* data, int len)
|
---|
| 498 | {
|
---|
| 499 | int ret = 0;
|
---|
| 500 | int retB64 = 0;
|
---|
| 501 | WOLFSSL_BIO* front = bio;
|
---|
| 502 | void* frmt = NULL;
|
---|
| 503 | word32 frmtSz = 0;
|
---|
| 504 |
|
---|
| 505 | WOLFSSL_ENTER("wolfSSL_BIO_write");
|
---|
| 506 |
|
---|
| 507 | /* info cb, abort if user returns <= 0*/
|
---|
| 508 | if (front != NULL && front->infoCb != NULL) {
|
---|
| 509 | ret = (int)front->infoCb(front, WOLFSSL_BIO_CB_WRITE,
|
---|
| 510 | (const char*)data, len, 0, 1);
|
---|
| 511 | if (ret <= 0) {
|
---|
| 512 | return ret;
|
---|
| 513 | }
|
---|
| 514 | }
|
---|
| 515 |
|
---|
| 516 | while (bio != NULL && ret >= 0) {
|
---|
| 517 | /* check for custom write */
|
---|
| 518 | if (bio->method && bio->method->writeCb) {
|
---|
| 519 | ret = bio->method->writeCb(bio, (const char*)data, len);
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | /* check for formatting */
|
---|
| 523 | if (bio->type == WOLFSSL_BIO_BASE64) {
|
---|
| 524 | #if defined(WOLFSSL_BASE64_ENCODE)
|
---|
| 525 | word32 sz = 0;
|
---|
| 526 |
|
---|
| 527 | if (bio->flags & WOLFSSL_BIO_FLAG_BASE64_NO_NL) {
|
---|
| 528 | if (Base64_Encode_NoNl((const byte*)data, len, NULL,
|
---|
| 529 | &sz) != LENGTH_ONLY_E) {
|
---|
| 530 | WOLFSSL_MSG("Error with base 64 get length");
|
---|
| 531 | ret = SSL_FATAL_ERROR;
|
---|
| 532 | }
|
---|
| 533 | }
|
---|
| 534 | else {
|
---|
| 535 | if (Base64_Encode((const byte*)data, len, NULL, &sz) !=
|
---|
| 536 | LENGTH_ONLY_E) {
|
---|
| 537 | WOLFSSL_MSG("Error with base 64 get length");
|
---|
| 538 | ret = SSL_FATAL_ERROR;
|
---|
| 539 | }
|
---|
| 540 | }
|
---|
| 541 |
|
---|
| 542 | if (frmt == NULL && sz > 0 && ret != SSL_FATAL_ERROR) {
|
---|
| 543 | frmt = (void*)XMALLOC(sz, front->heap,
|
---|
| 544 | DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 545 | if (frmt == NULL) {
|
---|
| 546 | WOLFSSL_MSG("Memory error");
|
---|
| 547 | ret = SSL_FATAL_ERROR;
|
---|
| 548 | }
|
---|
| 549 | frmtSz = sz;
|
---|
| 550 | }
|
---|
| 551 | else if (sz > frmtSz) {
|
---|
| 552 | frmt = (void*)XREALLOC(frmt, sz, front->heap,
|
---|
| 553 | DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 554 | if (frmt == NULL) {
|
---|
| 555 | WOLFSSL_MSG("Memory error");
|
---|
| 556 | ret = SSL_FATAL_ERROR;
|
---|
| 557 | }
|
---|
| 558 | /* since frmt already existed then data should point to knew
|
---|
| 559 | formatted buffer */
|
---|
| 560 | data = frmt;
|
---|
| 561 | len = frmtSz;
|
---|
| 562 | frmtSz = sz;
|
---|
| 563 | }
|
---|
| 564 | #endif /* defined(WOLFSSL_BASE64_ENCODE) */
|
---|
| 565 |
|
---|
| 566 | if (ret >= 0) {
|
---|
| 567 | /* change so that data is formatted buffer */
|
---|
| 568 | retB64 = wolfSSL_BIO_BASE64_write(bio, data, (word32)len,
|
---|
| 569 | (byte*)frmt, &frmtSz);
|
---|
| 570 | data = frmt;
|
---|
| 571 | len = frmtSz;
|
---|
| 572 | }
|
---|
| 573 | }
|
---|
| 574 |
|
---|
| 575 | /* write bios */
|
---|
| 576 | if (bio && bio->type == WOLFSSL_BIO_BIO) {
|
---|
| 577 | ret = wolfSSL_BIO_BIO_write(bio, data, len);
|
---|
| 578 | }
|
---|
| 579 |
|
---|
| 580 | if (bio && bio->type == WOLFSSL_BIO_MEMORY) {
|
---|
| 581 | ret = wolfSSL_BIO_MEMORY_write(bio, data, len);
|
---|
| 582 | }
|
---|
| 583 |
|
---|
| 584 | #ifndef NO_FILESYSTEM
|
---|
| 585 | if (bio && bio->type == WOLFSSL_BIO_FILE) {
|
---|
| 586 | ret = (int)XFWRITE(data, 1, len, (XFILE)bio->ptr);
|
---|
| 587 | }
|
---|
| 588 | #endif
|
---|
| 589 |
|
---|
| 590 | #ifndef WOLFCRYPT_ONLY
|
---|
| 591 | if (bio && bio->type == WOLFSSL_BIO_SSL) {
|
---|
| 592 | /* already got eof, again is error */
|
---|
| 593 | if (front->eof) {
|
---|
| 594 | ret = SSL_FATAL_ERROR;
|
---|
| 595 | }
|
---|
| 596 | else {
|
---|
| 597 | ret = wolfSSL_BIO_SSL_write(bio, data, len, front);
|
---|
| 598 | }
|
---|
| 599 | }
|
---|
| 600 |
|
---|
| 601 | if (bio && bio->type == WOLFSSL_BIO_MD) {
|
---|
| 602 | if (bio->next != NULL) { /* data passing through MD BIO */
|
---|
| 603 | ret = wolfSSL_BIO_MD_write(bio, data, len);
|
---|
| 604 | }
|
---|
| 605 | }
|
---|
| 606 | #endif /* WOLFCRYPT_ONLY */
|
---|
| 607 |
|
---|
| 608 | /* advance to the next bio in list */
|
---|
| 609 | bio = bio->next;
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | if (frmt != NULL) {
|
---|
| 613 | XFREE(frmt, front->heap, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 614 | }
|
---|
| 615 |
|
---|
| 616 | /* info cb, user can override return value */
|
---|
| 617 | if (front != NULL && front->infoCb != NULL) {
|
---|
| 618 | ret = (int)front->infoCb(front,
|
---|
| 619 | WOLFSSL_BIO_CB_WRITE | WOLFSSL_BIO_CB_RETURN,
|
---|
| 620 | (const char*)data, 0, 0, ret);
|
---|
| 621 | }
|
---|
| 622 |
|
---|
| 623 | if (retB64 != 0)
|
---|
| 624 | return retB64;
|
---|
| 625 | else
|
---|
| 626 | return ret;
|
---|
| 627 | }
|
---|
| 628 |
|
---|
| 629 |
|
---|
| 630 | /* Wrapper for other BIO type functions, expected to grow as OpenSSL compatibility
|
---|
| 631 | * layer grows.
|
---|
| 632 | *
|
---|
| 633 | * return info. specific to the cmd that is passed in.
|
---|
| 634 | */
|
---|
| 635 | #if defined(OPENSSL_ALL) || defined(OPENSSL_EXTRA)
|
---|
| 636 | long wolfSSL_BIO_ctrl(WOLFSSL_BIO *bio, int cmd, long larg, void *parg)
|
---|
| 637 | {
|
---|
| 638 | long ret;
|
---|
| 639 |
|
---|
| 640 | (void)larg; /* not currently used */
|
---|
| 641 |
|
---|
| 642 | WOLFSSL_ENTER("wolfSSL_BIO_ctrl");
|
---|
| 643 |
|
---|
| 644 | if (bio && bio->method && bio->method->ctrlCb) {
|
---|
| 645 | return bio->method->ctrlCb(bio, cmd, larg, parg);
|
---|
| 646 | }
|
---|
| 647 |
|
---|
| 648 | switch(cmd) {
|
---|
| 649 | case BIO_CTRL_PENDING:
|
---|
| 650 | case BIO_CTRL_WPENDING:
|
---|
| 651 | ret = (long)wolfSSL_BIO_ctrl_pending(bio);
|
---|
| 652 | break;
|
---|
| 653 | case BIO_CTRL_INFO:
|
---|
| 654 | ret = (long)wolfSSL_BIO_get_mem_data(bio, parg);
|
---|
| 655 | break;
|
---|
| 656 | case BIO_CTRL_FLUSH:
|
---|
| 657 | ret = (long)wolfSSL_BIO_flush(bio);
|
---|
| 658 | break;
|
---|
| 659 | case BIO_CTRL_RESET:
|
---|
| 660 | ret = (long)wolfSSL_BIO_reset(bio);
|
---|
| 661 | break;
|
---|
| 662 | default:
|
---|
| 663 | WOLFSSL_MSG("CMD not yet implemented");
|
---|
| 664 | ret = WOLFSSL_FAILURE;
|
---|
| 665 | break;
|
---|
| 666 | }
|
---|
| 667 | return ret;
|
---|
| 668 | }
|
---|
| 669 | #endif
|
---|
| 670 |
|
---|
| 671 |
|
---|
| 672 | /* helper function for wolfSSL_BIO_gets
|
---|
| 673 | * size till a newline is hit
|
---|
| 674 | * returns the number of bytes including the new line character
|
---|
| 675 | */
|
---|
| 676 | static int wolfSSL_getLineLength(char* in, int inSz)
|
---|
| 677 | {
|
---|
| 678 | int i;
|
---|
| 679 |
|
---|
| 680 | for (i = 0; i < inSz; i++) {
|
---|
| 681 | if (in[i] == '\n') {
|
---|
| 682 | return i + 1; /* includes new line character */
|
---|
| 683 | }
|
---|
| 684 | }
|
---|
| 685 |
|
---|
| 686 | return inSz; /* rest of buffer is all one line */
|
---|
| 687 | }
|
---|
| 688 |
|
---|
| 689 |
|
---|
| 690 | /* Gets the next line from bio. Goes until a new line character or end of
|
---|
| 691 | * buffer is reached.
|
---|
| 692 | *
|
---|
| 693 | * bio the structure to read a new line from
|
---|
| 694 | * buf buffer to hold the result
|
---|
| 695 | * sz the size of "buf" buffer
|
---|
| 696 | *
|
---|
| 697 | * returns the size of the result placed in buf on success and a 0 or negative
|
---|
| 698 | * value in an error case.
|
---|
| 699 | */
|
---|
| 700 | int wolfSSL_BIO_gets(WOLFSSL_BIO* bio, char* buf, int sz)
|
---|
| 701 | {
|
---|
| 702 | int ret = WOLFSSL_BIO_UNSET;
|
---|
| 703 |
|
---|
| 704 | WOLFSSL_ENTER("wolfSSL_BIO_gets");
|
---|
| 705 |
|
---|
| 706 | if (bio == NULL || buf == NULL) {
|
---|
| 707 | return WOLFSSL_FAILURE;
|
---|
| 708 | }
|
---|
| 709 |
|
---|
| 710 | /* not enough space for character plus terminator */
|
---|
| 711 | if (sz <= 1) {
|
---|
| 712 | return 0;
|
---|
| 713 | }
|
---|
| 714 |
|
---|
| 715 | /* info cb, abort if user returns <= 0*/
|
---|
| 716 | if (bio->infoCb != NULL) {
|
---|
| 717 | ret = (int)bio->infoCb(bio, WOLFSSL_BIO_CB_GETS, buf, sz, 0, 1);
|
---|
| 718 | if (ret <= 0) {
|
---|
| 719 | return ret;
|
---|
| 720 | }
|
---|
| 721 | }
|
---|
| 722 |
|
---|
| 723 | /* check if is custom method */
|
---|
| 724 | if (bio->method && bio->method->getsCb) {
|
---|
| 725 | return bio->method->getsCb(bio, buf, sz);
|
---|
| 726 | }
|
---|
| 727 |
|
---|
| 728 | switch (bio->type) {
|
---|
| 729 | #ifndef NO_FILESYSTEM
|
---|
| 730 | case WOLFSSL_BIO_FILE:
|
---|
| 731 | if (((XFILE)bio->ptr) == XBADFILE) {
|
---|
| 732 | return WOLFSSL_BIO_ERROR;
|
---|
| 733 | }
|
---|
| 734 |
|
---|
| 735 | #if defined(MICRIUM) || defined(LSR_FS) || defined(EBSNET)
|
---|
| 736 | WOLFSSL_MSG("XFGETS not ported for this system yet");
|
---|
| 737 | ret = XFGETS(buf, sz, (XFILE)bio->ptr);
|
---|
| 738 | #else
|
---|
| 739 | if (XFGETS(buf, sz, (XFILE)bio->ptr) != NULL) {
|
---|
| 740 | ret = (int)XSTRLEN(buf);
|
---|
| 741 | }
|
---|
| 742 | else {
|
---|
| 743 | ret = WOLFSSL_BIO_ERROR;
|
---|
| 744 | }
|
---|
| 745 | #endif
|
---|
| 746 | break;
|
---|
| 747 | #endif /* NO_FILESYSTEM */
|
---|
| 748 | case WOLFSSL_BIO_MEMORY:
|
---|
| 749 | {
|
---|
| 750 | const byte* c;
|
---|
| 751 | int cSz;
|
---|
| 752 | cSz = wolfSSL_BIO_pending(bio);
|
---|
| 753 | if (cSz == 0) {
|
---|
| 754 | ret = 0; /* Nothing to read */
|
---|
| 755 | buf[0] = '\0';
|
---|
| 756 | break;
|
---|
| 757 | }
|
---|
| 758 |
|
---|
| 759 | if (wolfSSL_BIO_get_mem_data(bio, (void*)&c) <= 0) {
|
---|
| 760 | ret = WOLFSSL_BIO_ERROR;
|
---|
| 761 | break;
|
---|
| 762 | }
|
---|
| 763 |
|
---|
| 764 | cSz = wolfSSL_getLineLength((char*)c, cSz);
|
---|
| 765 | /* check case where line was bigger then buffer and buffer
|
---|
| 766 | * needs end terminator */
|
---|
| 767 | if (cSz >= sz) {
|
---|
| 768 | cSz = sz - 1;
|
---|
| 769 | buf[cSz] = '\0';
|
---|
| 770 | }
|
---|
| 771 | else {
|
---|
| 772 | /* not minus 1 here because placing terminator after
|
---|
| 773 | msg and have checked that sz is large enough */
|
---|
| 774 | buf[cSz] = '\0';
|
---|
| 775 | }
|
---|
| 776 |
|
---|
| 777 | ret = wolfSSL_BIO_MEMORY_read(bio, (void*)buf, cSz);
|
---|
| 778 | /* ret is read after the switch statement */
|
---|
| 779 | break;
|
---|
| 780 | }
|
---|
| 781 | case WOLFSSL_BIO_BIO:
|
---|
| 782 | {
|
---|
| 783 | char* c;
|
---|
| 784 | int cSz;
|
---|
| 785 | cSz = wolfSSL_BIO_nread0(bio, &c);
|
---|
| 786 | if (cSz == 0) {
|
---|
| 787 | ret = 0; /* Nothing to read */
|
---|
| 788 | buf[0] = '\0';
|
---|
| 789 | break;
|
---|
| 790 | }
|
---|
| 791 |
|
---|
| 792 | cSz = wolfSSL_getLineLength(c, cSz);
|
---|
| 793 | /* check case where line was bigger then buffer and buffer
|
---|
| 794 | * needs end terminator */
|
---|
| 795 | if (cSz >= sz) {
|
---|
| 796 | cSz = sz - 1;
|
---|
| 797 | buf[cSz] = '\0';
|
---|
| 798 | }
|
---|
| 799 | else {
|
---|
| 800 | /* not minus 1 here because placing terminator after
|
---|
| 801 | msg and have checked that sz is large enough */
|
---|
| 802 | buf[cSz] = '\0';
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | ret = wolfSSL_BIO_nread(bio, &c, cSz);
|
---|
| 806 | if (ret > 0 && ret < sz) {
|
---|
| 807 | XMEMCPY(buf, c, ret);
|
---|
| 808 | }
|
---|
| 809 | break;
|
---|
| 810 | }
|
---|
| 811 |
|
---|
| 812 | #ifndef WOLFCRYPT_ONLY
|
---|
| 813 | /* call final on hash */
|
---|
| 814 | case WOLFSSL_BIO_MD:
|
---|
| 815 | if (wolfSSL_EVP_MD_CTX_size((WOLFSSL_EVP_MD_CTX*)bio->ptr) > sz) {
|
---|
| 816 | WOLFSSL_MSG("Output buffer was too small for digest");
|
---|
| 817 | ret = WOLFSSL_FAILURE;
|
---|
| 818 | }
|
---|
| 819 | else {
|
---|
| 820 | unsigned int szOut = 0;
|
---|
| 821 | ret = wolfSSL_EVP_DigestFinal((WOLFSSL_EVP_MD_CTX*)bio->ptr,
|
---|
| 822 | (unsigned char*)buf, &szOut);
|
---|
| 823 | if (ret == WOLFSSL_SUCCESS) {
|
---|
| 824 | ret = szOut;
|
---|
| 825 | }
|
---|
| 826 | }
|
---|
| 827 | break;
|
---|
| 828 | #endif /* WOLFCRYPT_ONLY */
|
---|
| 829 |
|
---|
| 830 | default:
|
---|
| 831 | WOLFSSL_MSG("BIO type not supported yet with wolfSSL_BIO_gets");
|
---|
| 832 | }
|
---|
| 833 |
|
---|
| 834 | /* info cb, user can override return value */
|
---|
| 835 | if (bio->infoCb != NULL) {
|
---|
| 836 | ret = (int)bio->infoCb(bio, WOLFSSL_BIO_CB_GETS | WOLFSSL_BIO_CB_RETURN,
|
---|
| 837 | buf, sz, 0, ret);
|
---|
| 838 | }
|
---|
| 839 |
|
---|
| 840 | return ret;
|
---|
| 841 | }
|
---|
| 842 |
|
---|
| 843 |
|
---|
| 844 | /* Writes a null terminated string to bio.
|
---|
| 845 | *
|
---|
| 846 | * bio the structure to write to
|
---|
| 847 | * buf buffer to holding input string
|
---|
| 848 | *
|
---|
| 849 | * returns the size of the result placed in bio on success and a 0 or negative
|
---|
| 850 | * value in an error case. -2 is returned if the implementation is not
|
---|
| 851 | * supported for the BIO type.
|
---|
| 852 | */
|
---|
| 853 | int wolfSSL_BIO_puts(WOLFSSL_BIO* bio, const char* buf)
|
---|
| 854 | {
|
---|
| 855 | int sz;
|
---|
| 856 |
|
---|
| 857 | if (bio == NULL || buf == NULL) {
|
---|
| 858 | return WOLFSSL_FATAL_ERROR;
|
---|
| 859 | }
|
---|
| 860 |
|
---|
| 861 | /* check if is custom method */
|
---|
| 862 | if (bio->method && bio->method->putsCb) {
|
---|
| 863 | return bio->method->putsCb(bio, buf);
|
---|
| 864 | }
|
---|
| 865 |
|
---|
| 866 | sz = (int)XSTRLEN(buf);
|
---|
| 867 | if (sz <= 0) {
|
---|
| 868 | return WOLFSSL_FATAL_ERROR;
|
---|
| 869 | }
|
---|
| 870 |
|
---|
| 871 | return wolfSSL_BIO_write(bio, buf, sz);
|
---|
| 872 | }
|
---|
| 873 |
|
---|
| 874 |
|
---|
| 875 | /* searches through bio list for a BIO of type "type"
|
---|
| 876 | * returns NULL on failure to find a given type */
|
---|
| 877 | WOLFSSL_BIO* wolfSSL_BIO_find_type(WOLFSSL_BIO* bio, int type)
|
---|
| 878 | {
|
---|
| 879 | WOLFSSL_BIO* local = NULL;
|
---|
| 880 | WOLFSSL_BIO* current;
|
---|
| 881 |
|
---|
| 882 | WOLFSSL_ENTER("wolfSSL_BIO_find_type");
|
---|
| 883 |
|
---|
| 884 | if (bio == NULL) {
|
---|
| 885 | return local;
|
---|
| 886 | }
|
---|
| 887 |
|
---|
| 888 | current = bio;
|
---|
| 889 | while (current != NULL) {
|
---|
| 890 | if (current->type == type) {
|
---|
| 891 | WOLFSSL_MSG("Found matching WOLFSSL_BIO type");
|
---|
| 892 | local = current;
|
---|
| 893 | break;
|
---|
| 894 | }
|
---|
| 895 | current = current->next;
|
---|
| 896 | }
|
---|
| 897 |
|
---|
| 898 | return local;
|
---|
| 899 | }
|
---|
| 900 |
|
---|
| 901 |
|
---|
| 902 | /* returns a pointer to the next WOLFSSL_BIO in the chain on success.
|
---|
| 903 | * If a failure case then NULL is returned */
|
---|
| 904 | WOLFSSL_BIO* wolfSSL_BIO_next(WOLFSSL_BIO* bio)
|
---|
| 905 | {
|
---|
| 906 | WOLFSSL_ENTER("wolfSSL_BIO_next");
|
---|
| 907 |
|
---|
| 908 | if (bio == NULL) {
|
---|
| 909 | WOLFSSL_MSG("Bad argument passed in");
|
---|
| 910 | return NULL;
|
---|
| 911 | }
|
---|
| 912 |
|
---|
| 913 | return bio->next;
|
---|
| 914 | }
|
---|
| 915 |
|
---|
| 916 | /* BIO_wpending returns the number of bytes pending to be written. */
|
---|
| 917 | size_t wolfSSL_BIO_wpending(const WOLFSSL_BIO *bio)
|
---|
| 918 | {
|
---|
| 919 | WOLFSSL_ENTER("BIO_wpending");
|
---|
| 920 |
|
---|
| 921 | if (bio == NULL)
|
---|
| 922 | return 0;
|
---|
| 923 |
|
---|
| 924 | if (bio->type == WOLFSSL_BIO_MEMORY) {
|
---|
| 925 | return bio->wrSz;
|
---|
| 926 | }
|
---|
| 927 |
|
---|
| 928 | /* type BIO_BIO then check paired buffer */
|
---|
| 929 | if (bio->type == WOLFSSL_BIO_BIO && bio->pair != NULL) {
|
---|
| 930 | WOLFSSL_BIO* pair = bio->pair;
|
---|
| 931 | return pair->wrIdx;
|
---|
| 932 | }
|
---|
| 933 |
|
---|
| 934 | return 0;
|
---|
| 935 | }
|
---|
| 936 |
|
---|
| 937 | /* Return the number of pending bytes in read and write buffers */
|
---|
| 938 | size_t wolfSSL_BIO_ctrl_pending(WOLFSSL_BIO *bio)
|
---|
| 939 | {
|
---|
| 940 | WOLFSSL_ENTER("wolfSSL_BIO_ctrl_pending");
|
---|
| 941 | if (bio == NULL) {
|
---|
| 942 | return 0;
|
---|
| 943 | }
|
---|
| 944 |
|
---|
| 945 | if (bio->type == WOLFSSL_BIO_MD) {
|
---|
| 946 | /* MD is a wrapper only get next bio */
|
---|
| 947 | while (bio->next != NULL) {
|
---|
| 948 | bio = bio->next;
|
---|
| 949 | if (bio->type != WOLFSSL_BIO_MD) {
|
---|
| 950 | break;
|
---|
| 951 | }
|
---|
| 952 | }
|
---|
| 953 | }
|
---|
| 954 |
|
---|
| 955 | #ifndef WOLFCRYPT_ONLY
|
---|
| 956 | if (bio->type == WOLFSSL_BIO_SSL && bio->ptr != NULL) {
|
---|
| 957 | return (long)wolfSSL_pending((WOLFSSL*)bio->ptr);
|
---|
| 958 | }
|
---|
| 959 | #endif
|
---|
| 960 |
|
---|
| 961 | if (bio->type == WOLFSSL_BIO_MEMORY) {
|
---|
| 962 | return bio->wrSz;
|
---|
| 963 | }
|
---|
| 964 |
|
---|
| 965 | /* type BIO_BIO then check paired buffer */
|
---|
| 966 | if (bio->type == WOLFSSL_BIO_BIO && bio->pair != NULL) {
|
---|
| 967 | WOLFSSL_BIO* pair = bio->pair;
|
---|
| 968 | if (pair->wrIdx > 0 && pair->wrIdx <= pair->rdIdx) {
|
---|
| 969 | /* in wrap around state where beginning of buffer is being
|
---|
| 970 | * overwritten */
|
---|
| 971 | return pair->wrSz - pair->rdIdx + pair->wrIdx;
|
---|
| 972 | }
|
---|
| 973 | else {
|
---|
| 974 | /* simple case where has not wrapped around */
|
---|
| 975 | return pair->wrIdx - pair->rdIdx;
|
---|
| 976 | }
|
---|
| 977 | }
|
---|
| 978 | return 0;
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 |
|
---|
| 982 | long wolfSSL_BIO_get_mem_ptr(WOLFSSL_BIO *bio, WOLFSSL_BUF_MEM **ptr)
|
---|
| 983 | {
|
---|
| 984 | WOLFSSL_BIO* front = bio;
|
---|
| 985 | long ret = WOLFSSL_FAILURE;
|
---|
| 986 |
|
---|
| 987 | WOLFSSL_ENTER("wolfSSL_BIO_get_mem_ptr");
|
---|
| 988 |
|
---|
| 989 | if (bio == NULL || ptr == NULL) {
|
---|
| 990 | return WOLFSSL_FAILURE;
|
---|
| 991 | }
|
---|
| 992 |
|
---|
| 993 | /* start at end and work backwards to find a memory BIO in the BIO chain */
|
---|
| 994 | while ((bio != NULL) && (bio->next != NULL)) {
|
---|
| 995 | bio = bio->next;
|
---|
| 996 | }
|
---|
| 997 |
|
---|
| 998 | while (bio != NULL) {
|
---|
| 999 |
|
---|
| 1000 | if (bio->type == WOLFSSL_BIO_MEMORY) {
|
---|
| 1001 | *ptr = bio->mem_buf;
|
---|
| 1002 | ret = WOLFSSL_SUCCESS;
|
---|
| 1003 | }
|
---|
| 1004 |
|
---|
| 1005 | if (bio == front) {
|
---|
| 1006 | break;
|
---|
| 1007 | }
|
---|
| 1008 | bio = bio->prev;
|
---|
| 1009 | }
|
---|
| 1010 |
|
---|
| 1011 | return ret;
|
---|
| 1012 | }
|
---|
| 1013 |
|
---|
| 1014 | WOLFSSL_API long wolfSSL_BIO_int_ctrl(WOLFSSL_BIO *bp, int cmd, long larg, int iarg)
|
---|
| 1015 | {
|
---|
| 1016 | (void) bp;
|
---|
| 1017 | (void) cmd;
|
---|
| 1018 | (void) larg;
|
---|
| 1019 | (void) iarg;
|
---|
| 1020 | WOLFSSL_STUB("BIO_int_ctrl");
|
---|
| 1021 | return 0;
|
---|
| 1022 | }
|
---|
| 1023 |
|
---|
| 1024 |
|
---|
| 1025 | int wolfSSL_BIO_set_write_buf_size(WOLFSSL_BIO *bio, long size)
|
---|
| 1026 | {
|
---|
| 1027 | WOLFSSL_ENTER("wolfSSL_BIO_set_write_buf_size");
|
---|
| 1028 |
|
---|
| 1029 | if (bio == NULL || bio->type != WOLFSSL_BIO_BIO || size < 0) {
|
---|
| 1030 | return WOLFSSL_FAILURE;
|
---|
| 1031 | }
|
---|
| 1032 |
|
---|
| 1033 | /* if already in pair then do not change size */
|
---|
| 1034 | if (bio->pair != NULL) {
|
---|
| 1035 | WOLFSSL_MSG("WOLFSSL_BIO is paired, free from pair before changing");
|
---|
| 1036 | return WOLFSSL_FAILURE;
|
---|
| 1037 | }
|
---|
| 1038 |
|
---|
| 1039 | bio->wrSz = (int)size;
|
---|
| 1040 | if (bio->wrSz < 0) {
|
---|
| 1041 | WOLFSSL_MSG("Unexpected negative size value");
|
---|
| 1042 | return WOLFSSL_FAILURE;
|
---|
| 1043 | }
|
---|
| 1044 |
|
---|
| 1045 | if (bio->ptr != NULL) {
|
---|
| 1046 | XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
|
---|
| 1047 | }
|
---|
| 1048 |
|
---|
| 1049 | bio->ptr = (byte*)XMALLOC(bio->wrSz, bio->heap, DYNAMIC_TYPE_OPENSSL);
|
---|
| 1050 | if (bio->ptr == NULL) {
|
---|
| 1051 | WOLFSSL_MSG("Memory allocation error");
|
---|
| 1052 | return WOLFSSL_FAILURE;
|
---|
| 1053 | }
|
---|
| 1054 | bio->num = bio->wrSz;
|
---|
| 1055 | bio->wrIdx = 0;
|
---|
| 1056 | bio->rdIdx = 0;
|
---|
| 1057 | if (bio->mem_buf != NULL) {
|
---|
| 1058 | bio->mem_buf->data = (char*)bio->ptr;
|
---|
| 1059 | bio->mem_buf->length = bio->num;
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 | return WOLFSSL_SUCCESS;
|
---|
| 1063 | }
|
---|
| 1064 |
|
---|
| 1065 |
|
---|
| 1066 | /* Joins two BIO_BIO types. The write of b1 goes to the read of b2 and vice
|
---|
| 1067 | * versa. Creating something similar to a two way pipe.
|
---|
| 1068 | * Reading and writing between the two BIOs is not thread safe, they are
|
---|
| 1069 | * expected to be used by the same thread. */
|
---|
| 1070 | int wolfSSL_BIO_make_bio_pair(WOLFSSL_BIO *b1, WOLFSSL_BIO *b2)
|
---|
| 1071 | {
|
---|
| 1072 | WOLFSSL_ENTER("wolfSSL_BIO_make_bio_pair");
|
---|
| 1073 |
|
---|
| 1074 | if (b1 == NULL || b2 == NULL) {
|
---|
| 1075 | WOLFSSL_LEAVE("wolfSSL_BIO_make_bio_pair", BAD_FUNC_ARG);
|
---|
| 1076 | return WOLFSSL_FAILURE;
|
---|
| 1077 | }
|
---|
| 1078 |
|
---|
| 1079 | /* both are expected to be of type BIO and not already paired */
|
---|
| 1080 | if (b1->type != WOLFSSL_BIO_BIO || b2->type != WOLFSSL_BIO_BIO ||
|
---|
| 1081 | b1->pair != NULL || b2->pair != NULL) {
|
---|
| 1082 | WOLFSSL_MSG("Expected type BIO and not already paired");
|
---|
| 1083 | return WOLFSSL_FAILURE;
|
---|
| 1084 | }
|
---|
| 1085 |
|
---|
| 1086 | /* set default write size if not already set */
|
---|
| 1087 | if (b1->ptr == NULL && wolfSSL_BIO_set_write_buf_size(b1,
|
---|
| 1088 | WOLFSSL_BIO_SIZE) != WOLFSSL_SUCCESS) {
|
---|
| 1089 | return WOLFSSL_FAILURE;
|
---|
| 1090 | }
|
---|
| 1091 |
|
---|
| 1092 | if (b2->ptr == NULL && wolfSSL_BIO_set_write_buf_size(b2,
|
---|
| 1093 | WOLFSSL_BIO_SIZE) != WOLFSSL_SUCCESS) {
|
---|
| 1094 | return WOLFSSL_FAILURE;
|
---|
| 1095 | }
|
---|
| 1096 |
|
---|
| 1097 | b1->pair = b2;
|
---|
| 1098 | b2->pair = b1;
|
---|
| 1099 |
|
---|
| 1100 | return WOLFSSL_SUCCESS;
|
---|
| 1101 | }
|
---|
| 1102 |
|
---|
| 1103 |
|
---|
| 1104 | int wolfSSL_BIO_ctrl_reset_read_request(WOLFSSL_BIO *b)
|
---|
| 1105 | {
|
---|
| 1106 | WOLFSSL_ENTER("wolfSSL_BIO_ctrl_reset_read_request");
|
---|
| 1107 |
|
---|
| 1108 | if (b == NULL || b->type == WOLFSSL_BIO_MEMORY) {
|
---|
| 1109 | return SSL_FAILURE;
|
---|
| 1110 | }
|
---|
| 1111 |
|
---|
| 1112 | b->readRq = 0;
|
---|
| 1113 |
|
---|
| 1114 | return WOLFSSL_SUCCESS;
|
---|
| 1115 | }
|
---|
| 1116 |
|
---|
| 1117 |
|
---|
| 1118 | /* Does not advance read index pointer */
|
---|
| 1119 | int wolfSSL_BIO_nread0(WOLFSSL_BIO *bio, char **buf)
|
---|
| 1120 | {
|
---|
| 1121 | WOLFSSL_ENTER("wolfSSL_BIO_nread0");
|
---|
| 1122 |
|
---|
| 1123 | if (bio == NULL || buf == NULL) {
|
---|
| 1124 | WOLFSSL_MSG("NULL argument passed in");
|
---|
| 1125 | return 0;
|
---|
| 1126 | }
|
---|
| 1127 |
|
---|
| 1128 | /* if paired read from pair */
|
---|
| 1129 | if (bio->pair != NULL) {
|
---|
| 1130 | WOLFSSL_BIO* pair = bio->pair;
|
---|
| 1131 |
|
---|
| 1132 | /* case where have wrapped around write buffer */
|
---|
| 1133 | *buf = (char*)pair->ptr + pair->rdIdx;
|
---|
| 1134 | if (pair->wrIdx > 0 && pair->rdIdx >= pair->wrIdx) {
|
---|
| 1135 | return pair->wrSz - pair->rdIdx;
|
---|
| 1136 | }
|
---|
| 1137 | else {
|
---|
| 1138 | return pair->wrIdx - pair->rdIdx;
|
---|
| 1139 | }
|
---|
| 1140 | }
|
---|
| 1141 |
|
---|
| 1142 | return 0;
|
---|
| 1143 | }
|
---|
| 1144 |
|
---|
| 1145 |
|
---|
| 1146 | /* similar to wolfSSL_BIO_nread0 but advances the read index */
|
---|
| 1147 | int wolfSSL_BIO_nread(WOLFSSL_BIO *bio, char **buf, int num)
|
---|
| 1148 | {
|
---|
| 1149 | int sz = WOLFSSL_BIO_UNSET;
|
---|
| 1150 |
|
---|
| 1151 | WOLFSSL_ENTER("wolfSSL_BIO_nread");
|
---|
| 1152 |
|
---|
| 1153 | if (bio == NULL || buf == NULL) {
|
---|
| 1154 | WOLFSSL_MSG("NULL argument passed in");
|
---|
| 1155 | return WOLFSSL_FAILURE;
|
---|
| 1156 | }
|
---|
| 1157 |
|
---|
| 1158 | if (bio->type == WOLFSSL_BIO_MEMORY) {
|
---|
| 1159 | return SSL_FAILURE;
|
---|
| 1160 | }
|
---|
| 1161 |
|
---|
| 1162 | if (bio->pair != NULL) {
|
---|
| 1163 | /* special case if asking to read 0 bytes */
|
---|
| 1164 | if (num == 0) {
|
---|
| 1165 | *buf = (char*)bio->pair->ptr + bio->pair->rdIdx;
|
---|
| 1166 | return 0;
|
---|
| 1167 | }
|
---|
| 1168 |
|
---|
| 1169 | /* get amount able to read and set buffer pointer */
|
---|
| 1170 | sz = wolfSSL_BIO_nread0(bio, buf);
|
---|
| 1171 | if (sz == 0) {
|
---|
| 1172 | return WOLFSSL_BIO_ERROR;
|
---|
| 1173 | }
|
---|
| 1174 |
|
---|
| 1175 | if (num < sz) {
|
---|
| 1176 | sz = num;
|
---|
| 1177 | }
|
---|
| 1178 | bio->pair->rdIdx += sz;
|
---|
| 1179 |
|
---|
| 1180 | /* check if have read to the end of the buffer and need to reset */
|
---|
| 1181 | if (bio->pair->rdIdx == bio->pair->wrSz) {
|
---|
| 1182 | bio->pair->rdIdx = 0;
|
---|
| 1183 | if (bio->pair->wrIdx == bio->pair->wrSz) {
|
---|
| 1184 | bio->pair->wrIdx = 0;
|
---|
| 1185 | }
|
---|
| 1186 | }
|
---|
| 1187 |
|
---|
| 1188 | /* check if read up to write index, if so then reset index */
|
---|
| 1189 | if (bio->pair->rdIdx == bio->pair->wrIdx) {
|
---|
| 1190 | bio->pair->rdIdx = 0;
|
---|
| 1191 | bio->pair->wrIdx = 0;
|
---|
| 1192 | }
|
---|
| 1193 | }
|
---|
| 1194 |
|
---|
| 1195 | return sz;
|
---|
| 1196 | }
|
---|
| 1197 |
|
---|
| 1198 |
|
---|
| 1199 | int wolfSSL_BIO_nwrite(WOLFSSL_BIO *bio, char **buf, int num)
|
---|
| 1200 | {
|
---|
| 1201 | int sz = WOLFSSL_BIO_UNSET;
|
---|
| 1202 |
|
---|
| 1203 | WOLFSSL_ENTER("wolfSSL_BIO_nwrite");
|
---|
| 1204 |
|
---|
| 1205 | if (bio == NULL || buf == NULL) {
|
---|
| 1206 | WOLFSSL_MSG("NULL argument passed in");
|
---|
| 1207 | return 0;
|
---|
| 1208 | }
|
---|
| 1209 |
|
---|
| 1210 | if (bio->type != WOLFSSL_BIO_BIO) {
|
---|
| 1211 | return SSL_FAILURE;
|
---|
| 1212 | }
|
---|
| 1213 |
|
---|
| 1214 | if (bio->pair != NULL) {
|
---|
| 1215 | if (num == 0) {
|
---|
| 1216 | *buf = (char*)bio->ptr + bio->wrIdx;
|
---|
| 1217 | return 0;
|
---|
| 1218 | }
|
---|
| 1219 |
|
---|
| 1220 | if (bio->wrIdx < bio->rdIdx) {
|
---|
| 1221 | /* if wrapped around only write up to read index. In this case
|
---|
| 1222 | * rdIdx is always greater then wrIdx so sz will not be negative. */
|
---|
| 1223 | sz = bio->rdIdx - bio->wrIdx;
|
---|
| 1224 | }
|
---|
| 1225 | else if (bio->rdIdx > 0 && bio->wrIdx == bio->rdIdx) {
|
---|
| 1226 | return WOLFSSL_BIO_ERROR; /* no more room to write */
|
---|
| 1227 | }
|
---|
| 1228 | else {
|
---|
| 1229 | /* write index is past read index so write to end of buffer */
|
---|
| 1230 | sz = bio->wrSz - bio->wrIdx;
|
---|
| 1231 |
|
---|
| 1232 | if (sz <= 0) {
|
---|
| 1233 | /* either an error has occurred with write index or it is at the
|
---|
| 1234 | * end of the write buffer. */
|
---|
| 1235 | if (bio->rdIdx == 0) {
|
---|
| 1236 | /* no more room, nothing has been read */
|
---|
| 1237 | return WOLFSSL_BIO_ERROR;
|
---|
| 1238 | }
|
---|
| 1239 |
|
---|
| 1240 | bio->wrIdx = 0;
|
---|
| 1241 |
|
---|
| 1242 | /* check case where read index is not at 0 */
|
---|
| 1243 | if (bio->rdIdx > 0) {
|
---|
| 1244 | sz = bio->rdIdx; /* can write up to the read index */
|
---|
| 1245 | }
|
---|
| 1246 | else {
|
---|
| 1247 | sz = bio->wrSz; /* no restriction other then buffer size */
|
---|
| 1248 | }
|
---|
| 1249 | }
|
---|
| 1250 | }
|
---|
| 1251 |
|
---|
| 1252 | if (num < sz) {
|
---|
| 1253 | sz = num;
|
---|
| 1254 | }
|
---|
| 1255 | *buf = (char*)bio->ptr + bio->wrIdx;
|
---|
| 1256 | bio->wrIdx += sz;
|
---|
| 1257 |
|
---|
| 1258 | /* if at the end of the buffer and space for wrap around then set
|
---|
| 1259 | * write index back to 0 */
|
---|
| 1260 | if (bio->wrIdx == bio->wrSz && bio->rdIdx > 0) {
|
---|
| 1261 | bio->wrIdx = 0;
|
---|
| 1262 | }
|
---|
| 1263 | }
|
---|
| 1264 |
|
---|
| 1265 | return sz;
|
---|
| 1266 | }
|
---|
| 1267 |
|
---|
| 1268 |
|
---|
| 1269 | /* Reset BIO to initial state */
|
---|
| 1270 | int wolfSSL_BIO_reset(WOLFSSL_BIO *bio)
|
---|
| 1271 | {
|
---|
| 1272 | WOLFSSL_ENTER("wolfSSL_BIO_reset");
|
---|
| 1273 |
|
---|
| 1274 | if (bio == NULL) {
|
---|
| 1275 | WOLFSSL_MSG("NULL argument passed in");
|
---|
| 1276 | /* -1 is consistent failure even for FILE type */
|
---|
| 1277 | return WOLFSSL_BIO_ERROR;
|
---|
| 1278 | }
|
---|
| 1279 |
|
---|
| 1280 | switch (bio->type) {
|
---|
| 1281 | #ifndef NO_FILESYSTEM
|
---|
| 1282 | case WOLFSSL_BIO_FILE:
|
---|
| 1283 | XREWIND((XFILE)bio->ptr);
|
---|
| 1284 | return 0;
|
---|
| 1285 | #endif
|
---|
| 1286 |
|
---|
| 1287 | case WOLFSSL_BIO_BIO:
|
---|
| 1288 | bio->rdIdx = 0;
|
---|
| 1289 | bio->wrIdx = 0;
|
---|
| 1290 | return 0;
|
---|
| 1291 |
|
---|
| 1292 | case WOLFSSL_BIO_MEMORY:
|
---|
| 1293 | bio->rdIdx = 0;
|
---|
| 1294 | bio->wrIdx = 0;
|
---|
| 1295 | bio->wrSz = 0;
|
---|
| 1296 | XFREE(bio->ptr, bio->heap, DYNAMIC_TYPE_OPENSSL);
|
---|
| 1297 | bio->ptr = NULL;
|
---|
| 1298 | bio->num = 0;
|
---|
| 1299 | if (bio->mem_buf != NULL) {
|
---|
| 1300 | bio->mem_buf->data = (char*)bio->ptr;
|
---|
| 1301 | bio->mem_buf->length = bio->num;
|
---|
| 1302 | }
|
---|
| 1303 | return 0;
|
---|
| 1304 |
|
---|
| 1305 | #ifndef WOLFCRYPT_ONLY
|
---|
| 1306 | case WOLFSSL_BIO_MD:
|
---|
| 1307 | if (bio->ptr != NULL) {
|
---|
| 1308 | const WOLFSSL_EVP_MD* md =
|
---|
| 1309 | wolfSSL_EVP_MD_CTX_md((WOLFSSL_EVP_MD_CTX*)bio->ptr);
|
---|
| 1310 | wolfSSL_EVP_MD_CTX_init((WOLFSSL_EVP_MD_CTX*)bio->ptr);
|
---|
| 1311 | wolfSSL_EVP_DigestInit((WOLFSSL_EVP_MD_CTX*)bio->ptr, md);
|
---|
| 1312 | }
|
---|
| 1313 | return 0;
|
---|
| 1314 | #endif /* WOLFCRYPT_ONLY */
|
---|
| 1315 |
|
---|
| 1316 | default:
|
---|
| 1317 | WOLFSSL_MSG("Unknown BIO type needs added to reset function");
|
---|
| 1318 | }
|
---|
| 1319 |
|
---|
| 1320 | return WOLFSSL_BIO_ERROR;
|
---|
| 1321 | }
|
---|
| 1322 |
|
---|
| 1323 | #ifndef NO_FILESYSTEM
|
---|
| 1324 | long wolfSSL_BIO_set_fp(WOLFSSL_BIO *bio, XFILE fp, int c)
|
---|
| 1325 | {
|
---|
| 1326 | WOLFSSL_ENTER("wolfSSL_BIO_set_fp");
|
---|
| 1327 |
|
---|
| 1328 | if (bio == NULL || fp == XBADFILE) {
|
---|
| 1329 | WOLFSSL_LEAVE("wolfSSL_BIO_set_fp", BAD_FUNC_ARG);
|
---|
| 1330 | return WOLFSSL_FAILURE;
|
---|
| 1331 | }
|
---|
| 1332 |
|
---|
| 1333 | if (bio->type != WOLFSSL_BIO_FILE) {
|
---|
| 1334 | return WOLFSSL_FAILURE;
|
---|
| 1335 | }
|
---|
| 1336 |
|
---|
| 1337 | bio->shutdown = (byte)c;
|
---|
| 1338 | bio->ptr = (XFILE)fp;
|
---|
| 1339 |
|
---|
| 1340 | return WOLFSSL_SUCCESS;
|
---|
| 1341 | }
|
---|
| 1342 |
|
---|
| 1343 |
|
---|
| 1344 | long wolfSSL_BIO_get_fp(WOLFSSL_BIO *bio, XFILE* fp)
|
---|
| 1345 | {
|
---|
| 1346 | WOLFSSL_ENTER("wolfSSL_BIO_get_fp");
|
---|
| 1347 |
|
---|
| 1348 | if (bio == NULL || fp == XBADFILE) {
|
---|
| 1349 | return WOLFSSL_FAILURE;
|
---|
| 1350 | }
|
---|
| 1351 |
|
---|
| 1352 | if (bio->type != WOLFSSL_BIO_FILE) {
|
---|
| 1353 | return SSL_FAILURE;
|
---|
| 1354 | }
|
---|
| 1355 |
|
---|
| 1356 | *fp = (XFILE)bio->ptr;
|
---|
| 1357 |
|
---|
| 1358 | return WOLFSSL_SUCCESS;
|
---|
| 1359 | }
|
---|
| 1360 |
|
---|
| 1361 | /* overwrites file */
|
---|
| 1362 | int wolfSSL_BIO_write_filename(WOLFSSL_BIO *bio, char *name)
|
---|
| 1363 | {
|
---|
| 1364 | WOLFSSL_ENTER("wolfSSL_BIO_write_filename");
|
---|
| 1365 |
|
---|
| 1366 | if (bio == NULL || name == NULL) {
|
---|
| 1367 | return WOLFSSL_FAILURE;
|
---|
| 1368 | }
|
---|
| 1369 |
|
---|
| 1370 | if (bio->type == WOLFSSL_BIO_FILE) {
|
---|
| 1371 | if (((XFILE)bio->ptr) != XBADFILE && bio->shutdown == BIO_CLOSE) {
|
---|
| 1372 | XFCLOSE((XFILE)bio->ptr);
|
---|
| 1373 | }
|
---|
| 1374 |
|
---|
| 1375 | bio->ptr = XFOPEN(name, "w");
|
---|
| 1376 | if (((XFILE)bio->ptr) == XBADFILE) {
|
---|
| 1377 | return WOLFSSL_FAILURE;
|
---|
| 1378 | }
|
---|
| 1379 | bio->shutdown = BIO_CLOSE;
|
---|
| 1380 |
|
---|
| 1381 | return WOLFSSL_SUCCESS;
|
---|
| 1382 | }
|
---|
| 1383 |
|
---|
| 1384 | return WOLFSSL_FAILURE;
|
---|
| 1385 | }
|
---|
| 1386 |
|
---|
| 1387 |
|
---|
| 1388 | int wolfSSL_BIO_seek(WOLFSSL_BIO *bio, int ofs)
|
---|
| 1389 | {
|
---|
| 1390 | WOLFSSL_ENTER("wolfSSL_BIO_seek");
|
---|
| 1391 |
|
---|
| 1392 | if (bio == NULL) {
|
---|
| 1393 | return -1;
|
---|
| 1394 | }
|
---|
| 1395 |
|
---|
| 1396 | /* offset ofs from beginning of file */
|
---|
| 1397 | if (bio->type == WOLFSSL_BIO_FILE &&
|
---|
| 1398 | XFSEEK((XFILE)bio->ptr, ofs, SEEK_SET) < 0) {
|
---|
| 1399 | return -1;
|
---|
| 1400 | }
|
---|
| 1401 |
|
---|
| 1402 | return 0;
|
---|
| 1403 | }
|
---|
| 1404 | #endif /* NO_FILESYSTEM */
|
---|
| 1405 |
|
---|
| 1406 |
|
---|
| 1407 | long wolfSSL_BIO_set_mem_eof_return(WOLFSSL_BIO *bio, int v)
|
---|
| 1408 | {
|
---|
| 1409 | WOLFSSL_ENTER("wolfSSL_BIO_set_mem_eof_return");
|
---|
| 1410 |
|
---|
| 1411 | if (bio != NULL) {
|
---|
| 1412 | bio->eof = v;
|
---|
| 1413 | }
|
---|
| 1414 |
|
---|
| 1415 | return 0;
|
---|
| 1416 | }
|
---|
| 1417 |
|
---|
| 1418 | int wolfSSL_BIO_get_len(WOLFSSL_BIO *bio)
|
---|
| 1419 | {
|
---|
| 1420 | int len;
|
---|
| 1421 | #ifndef NO_FILESYSTEM
|
---|
| 1422 | long memSz = 0, curr = 0;
|
---|
| 1423 | XFILE file;
|
---|
| 1424 | #endif
|
---|
| 1425 |
|
---|
| 1426 | WOLFSSL_ENTER("wolfSSL_BIO_get_len");
|
---|
| 1427 |
|
---|
| 1428 | if ((len = wolfSSL_BIO_pending(bio)) > 0) {
|
---|
| 1429 | }
|
---|
| 1430 | #ifndef NO_FILESYSTEM
|
---|
| 1431 | else if (bio->type == WOLFSSL_BIO_FILE) {
|
---|
| 1432 | if (wolfSSL_BIO_get_fp(bio, &file) != WOLFSSL_SUCCESS)
|
---|
| 1433 | len = BAD_FUNC_ARG;
|
---|
| 1434 | if (len == 0) {
|
---|
| 1435 | curr = XFTELL(file);
|
---|
| 1436 | if (curr < 0) {
|
---|
| 1437 | len = WOLFSSL_BAD_FILE;
|
---|
| 1438 | }
|
---|
| 1439 | if (XFSEEK(file, 0, XSEEK_END) != 0)
|
---|
| 1440 | len = WOLFSSL_BAD_FILE;
|
---|
| 1441 | }
|
---|
| 1442 | if (len == 0) {
|
---|
| 1443 | memSz = XFTELL(file);
|
---|
| 1444 | if (memSz > MAX_WOLFSSL_FILE_SIZE || memSz < 0)
|
---|
| 1445 | len = WOLFSSL_BAD_FILE;
|
---|
| 1446 | }
|
---|
| 1447 | if (len == 0) {
|
---|
| 1448 | memSz -= curr;
|
---|
| 1449 | len = (int)memSz;
|
---|
| 1450 | if (XFSEEK(file, curr, SEEK_SET) != 0)
|
---|
| 1451 | len = WOLFSSL_BAD_FILE;
|
---|
| 1452 | }
|
---|
| 1453 | }
|
---|
| 1454 | #endif
|
---|
| 1455 | return len;
|
---|
| 1456 | }
|
---|
| 1457 |
|
---|
| 1458 |
|
---|
| 1459 | void wolfSSL_BIO_set_callback(WOLFSSL_BIO *bio, wolf_bio_info_cb callback_func)
|
---|
| 1460 | {
|
---|
| 1461 | WOLFSSL_ENTER("wolfSSL_BIO_set_callback");
|
---|
| 1462 |
|
---|
| 1463 | if (bio != NULL) {
|
---|
| 1464 | bio->infoCb = callback_func;
|
---|
| 1465 | }
|
---|
| 1466 | }
|
---|
| 1467 |
|
---|
| 1468 |
|
---|
| 1469 | wolf_bio_info_cb wolfSSL_BIO_get_callback(WOLFSSL_BIO *bio)
|
---|
| 1470 | {
|
---|
| 1471 | WOLFSSL_ENTER("wolfSSL_BIO_get_callback");
|
---|
| 1472 |
|
---|
| 1473 | if (bio != NULL) {
|
---|
| 1474 | return bio->infoCb;
|
---|
| 1475 | }
|
---|
| 1476 |
|
---|
| 1477 | return NULL;
|
---|
| 1478 | }
|
---|
| 1479 |
|
---|
| 1480 |
|
---|
| 1481 | void wolfSSL_BIO_set_callback_arg(WOLFSSL_BIO *bio, char *arg)
|
---|
| 1482 | {
|
---|
| 1483 | WOLFSSL_ENTER("wolfSSL_BIO_set_callback_arg");
|
---|
| 1484 |
|
---|
| 1485 | if (bio != NULL) {
|
---|
| 1486 | bio->infoArg = arg;
|
---|
| 1487 | }
|
---|
| 1488 | }
|
---|
| 1489 |
|
---|
| 1490 |
|
---|
| 1491 | char* wolfSSL_BIO_get_callback_arg(const WOLFSSL_BIO *bio)
|
---|
| 1492 | {
|
---|
| 1493 | WOLFSSL_ENTER("wolfSSL_BIO_get_callback_arg");
|
---|
| 1494 |
|
---|
| 1495 | if (bio != NULL) {
|
---|
| 1496 | return bio->infoArg;
|
---|
| 1497 | }
|
---|
| 1498 |
|
---|
| 1499 | return NULL;
|
---|
| 1500 | }
|
---|
| 1501 |
|
---|
| 1502 |
|
---|
| 1503 | /* store a user pointer in the WOLFSSL_BIO structure */
|
---|
| 1504 | void wolfSSL_BIO_set_data(WOLFSSL_BIO* bio, void *ptr)
|
---|
| 1505 | {
|
---|
| 1506 | WOLFSSL_ENTER("wolfSSL_BIO_set_data");
|
---|
| 1507 |
|
---|
| 1508 | if (bio != NULL) {
|
---|
| 1509 | bio->usrCtx = ptr;
|
---|
| 1510 | }
|
---|
| 1511 | }
|
---|
| 1512 |
|
---|
| 1513 |
|
---|
| 1514 | void* wolfSSL_BIO_get_data(WOLFSSL_BIO* bio)
|
---|
| 1515 | {
|
---|
| 1516 | WOLFSSL_ENTER("wolfSSL_BIO_get_data");
|
---|
| 1517 |
|
---|
| 1518 | if (bio != NULL)
|
---|
| 1519 | return bio->usrCtx;
|
---|
| 1520 |
|
---|
| 1521 | WOLFSSL_MSG("WOLFSSL_BIO was null");
|
---|
| 1522 | return NULL;
|
---|
| 1523 | }
|
---|
| 1524 |
|
---|
| 1525 | /* If flag is 0 then blocking is set, if 1 then non blocking.
|
---|
| 1526 | * Always returns 1
|
---|
| 1527 | */
|
---|
| 1528 | long wolfSSL_BIO_set_nbio(WOLFSSL_BIO* bio, long on)
|
---|
| 1529 | {
|
---|
| 1530 | #ifndef WOLFSSL_DTLS
|
---|
| 1531 | (void)on;
|
---|
| 1532 | #endif
|
---|
| 1533 | WOLFSSL_ENTER("wolfSSL_BIO_set_nbio");
|
---|
| 1534 |
|
---|
| 1535 | switch (bio->type) {
|
---|
| 1536 | case WOLFSSL_BIO_SOCKET:
|
---|
| 1537 | #ifdef XFCNTL
|
---|
| 1538 | {
|
---|
| 1539 | int flag = XFCNTL(bio->num, F_GETFL, 0);
|
---|
| 1540 | if (on)
|
---|
| 1541 | XFCNTL(bio->num, F_SETFL, flag | O_NONBLOCK);
|
---|
| 1542 | else
|
---|
| 1543 | XFCNTL(bio->num, F_SETFL, flag & ~O_NONBLOCK);
|
---|
| 1544 | }
|
---|
| 1545 | #endif
|
---|
| 1546 | break;
|
---|
| 1547 | case WOLFSSL_BIO_SSL:
|
---|
| 1548 | #ifdef WOLFSSL_DTLS
|
---|
| 1549 | wolfSSL_dtls_set_using_nonblock((WOLFSSL*)bio->ptr, (int)on);
|
---|
| 1550 | #endif
|
---|
| 1551 | break;
|
---|
| 1552 |
|
---|
| 1553 | default:
|
---|
| 1554 | WOLFSSL_MSG("Unsupported bio type for non blocking");
|
---|
| 1555 | break;
|
---|
| 1556 | }
|
---|
| 1557 |
|
---|
| 1558 | return 1;
|
---|
| 1559 | }
|
---|
| 1560 |
|
---|
| 1561 |
|
---|
| 1562 |
|
---|
| 1563 | /* creates a new custom WOLFSSL_BIO_METHOD */
|
---|
| 1564 | WOLFSSL_BIO_METHOD *wolfSSL_BIO_meth_new(int type, const char *name)
|
---|
| 1565 | {
|
---|
| 1566 | WOLFSSL_BIO_METHOD* meth;
|
---|
| 1567 |
|
---|
| 1568 | WOLFSSL_ENTER("wolfSSL_BIO_meth_new");
|
---|
| 1569 |
|
---|
| 1570 | meth = (WOLFSSL_BIO_METHOD*)XMALLOC(sizeof(WOLFSSL_BIO_METHOD), NULL,
|
---|
| 1571 | DYNAMIC_TYPE_OPENSSL);
|
---|
| 1572 | if (meth == NULL) {
|
---|
| 1573 | WOLFSSL_MSG("Error allocating memory for WOLFSSL_BIO_METHOD");
|
---|
| 1574 | return NULL;
|
---|
| 1575 | }
|
---|
| 1576 | XMEMSET(meth, 0, sizeof(WOLFSSL_BIO_METHOD));
|
---|
| 1577 | meth->type = (byte)type;
|
---|
| 1578 | XSTRNCPY(meth->name, name, MAX_BIO_METHOD_NAME - 1);
|
---|
| 1579 |
|
---|
| 1580 | return meth;
|
---|
| 1581 | }
|
---|
| 1582 |
|
---|
| 1583 |
|
---|
| 1584 | void wolfSSL_BIO_meth_free(WOLFSSL_BIO_METHOD *biom)
|
---|
| 1585 | {
|
---|
| 1586 | WOLFSSL_ENTER("wolfSSL_BIO_meth_free");
|
---|
| 1587 | if (biom) {
|
---|
| 1588 | XFREE(biom, NULL, DYNAMIC_TYPE_OPENSSL);
|
---|
| 1589 | }
|
---|
| 1590 | }
|
---|
| 1591 |
|
---|
| 1592 |
|
---|
| 1593 | int wolfSSL_BIO_meth_set_write(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1594 | wolfSSL_BIO_meth_write_cb biom_write)
|
---|
| 1595 | {
|
---|
| 1596 | WOLFSSL_ENTER("wolfSSL_BIO_meth_set_write");
|
---|
| 1597 | if (biom) {
|
---|
| 1598 | biom->writeCb = biom_write;
|
---|
| 1599 | return WOLFSSL_SUCCESS;
|
---|
| 1600 | }
|
---|
| 1601 | return WOLFSSL_FAILURE;
|
---|
| 1602 | }
|
---|
| 1603 |
|
---|
| 1604 |
|
---|
| 1605 | int wolfSSL_BIO_meth_set_read(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1606 | wolfSSL_BIO_meth_read_cb biom_read)
|
---|
| 1607 | {
|
---|
| 1608 | WOLFSSL_ENTER("wolfSSL_BIO_meth_set_read");
|
---|
| 1609 | if (biom) {
|
---|
| 1610 | biom->readCb = biom_read;
|
---|
| 1611 | return WOLFSSL_SUCCESS;
|
---|
| 1612 | }
|
---|
| 1613 | return WOLFSSL_FAILURE;
|
---|
| 1614 | }
|
---|
| 1615 |
|
---|
| 1616 |
|
---|
| 1617 | int wolfSSL_BIO_meth_set_puts(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1618 | wolfSSL_BIO_meth_puts_cb biom_puts)
|
---|
| 1619 | {
|
---|
| 1620 | WOLFSSL_ENTER("wolfSSL_BIO_meth_set_puts");
|
---|
| 1621 | if (biom) {
|
---|
| 1622 | biom->putsCb = biom_puts;
|
---|
| 1623 | return WOLFSSL_SUCCESS;
|
---|
| 1624 | }
|
---|
| 1625 | return WOLFSSL_FAILURE;
|
---|
| 1626 | }
|
---|
| 1627 |
|
---|
| 1628 |
|
---|
| 1629 | int wolfSSL_BIO_meth_set_gets(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1630 | wolfSSL_BIO_meth_gets_cb biom_gets)
|
---|
| 1631 | {
|
---|
| 1632 | WOLFSSL_ENTER("wolfSSL_BIO_meth_set_gets");
|
---|
| 1633 | if (biom) {
|
---|
| 1634 | biom->getsCb = biom_gets;
|
---|
| 1635 | return WOLFSSL_SUCCESS;
|
---|
| 1636 | }
|
---|
| 1637 | return WOLFSSL_FAILURE;
|
---|
| 1638 | }
|
---|
| 1639 |
|
---|
| 1640 |
|
---|
| 1641 | int wolfSSL_BIO_meth_set_ctrl(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1642 | wolfSSL_BIO_meth_ctrl_get_cb biom_ctrl)
|
---|
| 1643 | {
|
---|
| 1644 | WOLFSSL_ENTER("wolfSSL_BIO_meth_set_ctrl");
|
---|
| 1645 | if (biom) {
|
---|
| 1646 | biom->ctrlCb = biom_ctrl;
|
---|
| 1647 | return WOLFSSL_SUCCESS;
|
---|
| 1648 | }
|
---|
| 1649 | return WOLFSSL_FAILURE;
|
---|
| 1650 | }
|
---|
| 1651 |
|
---|
| 1652 |
|
---|
| 1653 | int wolfSSL_BIO_meth_set_create(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1654 | wolfSSL_BIO_meth_create_cb biom_create)
|
---|
| 1655 | {
|
---|
| 1656 | WOLFSSL_ENTER("wolfSSL_BIO_meth_set_create");
|
---|
| 1657 | if (biom) {
|
---|
| 1658 | biom->createCb = biom_create;
|
---|
| 1659 | return WOLFSSL_SUCCESS;
|
---|
| 1660 | }
|
---|
| 1661 | return WOLFSSL_FAILURE;
|
---|
| 1662 | }
|
---|
| 1663 |
|
---|
| 1664 |
|
---|
| 1665 | int wolfSSL_BIO_meth_set_destroy(WOLFSSL_BIO_METHOD *biom,
|
---|
| 1666 | wolfSSL_BIO_meth_destroy_cb biom_destroy)
|
---|
| 1667 | {
|
---|
| 1668 | WOLFSSL_STUB("wolfSSL_BIO_meth_set_destroy");
|
---|
| 1669 | if (biom) {
|
---|
| 1670 | biom->freeCb = biom_destroy;
|
---|
| 1671 | return WOLFSSL_SUCCESS;
|
---|
| 1672 | }
|
---|
| 1673 | return WOLFSSL_FAILURE;
|
---|
| 1674 | }
|
---|
| 1675 |
|
---|
| 1676 |
|
---|
| 1677 | /* this compatibility function can be used for multiple BIO types */
|
---|
| 1678 | int wolfSSL_BIO_get_mem_data(WOLFSSL_BIO* bio, void* p)
|
---|
| 1679 | {
|
---|
| 1680 | WOLFSSL_ENTER("wolfSSL_BIO_get_mem_data");
|
---|
| 1681 |
|
---|
| 1682 | if (bio == NULL)
|
---|
| 1683 | return WOLFSSL_FATAL_ERROR;
|
---|
| 1684 |
|
---|
| 1685 | if (p) {
|
---|
| 1686 | *(byte**)p = (byte*)bio->ptr;
|
---|
| 1687 | }
|
---|
| 1688 |
|
---|
| 1689 | return bio->num;
|
---|
| 1690 | }
|
---|
| 1691 |
|
---|
| 1692 | int wolfSSL_BIO_pending(WOLFSSL_BIO* bio)
|
---|
| 1693 | {
|
---|
| 1694 | return (int)wolfSSL_BIO_ctrl_pending(bio);
|
---|
| 1695 | }
|
---|
| 1696 |
|
---|
| 1697 |
|
---|
| 1698 | int wolfSSL_BIO_flush(WOLFSSL_BIO* bio)
|
---|
| 1699 | {
|
---|
| 1700 | /* for wolfSSL no flushing needed */
|
---|
| 1701 | WOLFSSL_ENTER("BIO_flush");
|
---|
| 1702 | (void)bio;
|
---|
| 1703 | return 1;
|
---|
| 1704 | }
|
---|
| 1705 | #endif /* WOLFSSL_BIO_INCLUDED */
|
---|