95c29f3cd1
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta). (This change contains substantial changes from the original and effectively starts a new history.)
111 lines
4.4 KiB
C
111 lines
4.4 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#define _BSD_SOURCE /* for snprintf, vprintf etc */
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#include <openssl/bio.h>
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#include <assert.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <openssl/mem.h>
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int BIO_printf(BIO *bio, const char *format, ...) {
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va_list args;
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int ret;
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va_start(args, format);
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ret = BIO_vprintf(bio, format, args);
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va_end(args);
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return ret;
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}
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int BIO_vprintf(BIO *bio, const char *format, va_list args) {
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char buf[256], *out, out_malloced = 0;
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int out_len, ret;
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/* Note: this is assuming that va_list is ok to copy as POD. If the system
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* defines it with a pointer to mutable state then passing it twice to
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* vsnprintf will not work. */
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out_len = vsnprintf(buf, sizeof(buf), format, args);
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if (out_len >= sizeof(buf)) {
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const int requested_len = out_len;
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/* The output was truncated. */
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out = OPENSSL_malloc(requested_len);
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out_malloced = 1;
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if (out == NULL) {
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/* Unclear what can be done in this situation. OpenSSL has historically
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* crashed and that seems better than producing the wrong output. */
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abort();
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}
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out_len = vsnprintf(out, requested_len, format, args);
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assert(out_len == requested_len);
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} else {
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out = buf;
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}
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ret = BIO_write(bio, out, out_len);
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if (out_malloced) {
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OPENSSL_free(out);
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}
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return ret;
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}
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