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842 lines
23 KiB
842 lines
23 KiB
/* crypto/bio/b_print.c */
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/* 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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*/
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/* disable assert() unless BIO_DEBUG has been defined */
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#ifndef BIO_DEBUG
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# ifndef NDEBUG
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# define NDEBUG
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# endif
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#endif
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/*
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* Stolen from tjh's ssl/ssl_trc.c stuff.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include <limits.h>
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#include "cryptlib.h"
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#ifndef NO_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <openssl/bn.h> /* To get BN_LLONG properly defined */
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#include <openssl/bio.h>
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#if defined(BN_LLONG) || defined(SIXTY_FOUR_BIT)
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# ifndef HAVE_LONG_LONG
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# define HAVE_LONG_LONG 1
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# endif
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#endif
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/***************************************************************************/
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/*
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* Copyright Patrick Powell 1995
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* This code is based on code written by Patrick Powell <papowell@astart.com>
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* It may be used for any purpose as long as this notice remains intact
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* on all source code distributions.
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*/
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/*
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* This code contains numerious changes and enhancements which were
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* made by lots of contributors over the last years to Patrick Powell's
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* original code:
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*
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* o Patrick Powell <papowell@astart.com> (1995)
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* o Brandon Long <blong@fiction.net> (1996, for Mutt)
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* o Thomas Roessler <roessler@guug.de> (1998, for Mutt)
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* o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt)
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* o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
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* o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
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* o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
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* o ... (for OpenSSL)
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*/
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#ifdef HAVE_LONG_DOUBLE
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#define LDOUBLE long double
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#else
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#define LDOUBLE double
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#endif
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#ifdef HAVE_LONG_LONG
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# if defined(_WIN32) && !defined(__GNUC__)
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# define LLONG __int64
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# else
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# define LLONG long long
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# endif
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#else
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#define LLONG long
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#endif
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static void fmtstr (char **, char **, size_t *, size_t *,
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const char *, int, int, int);
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static void fmtint (char **, char **, size_t *, size_t *,
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LLONG, int, int, int, int);
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static void fmtfp (char **, char **, size_t *, size_t *,
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LDOUBLE, int, int, int);
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static void doapr_outch (char **, char **, size_t *, size_t *, int);
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static void _dopr(char **sbuffer, char **buffer,
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size_t *maxlen, size_t *retlen, int *truncated,
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const char *format, va_list args);
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/* format read states */
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#define DP_S_DEFAULT 0
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#define DP_S_FLAGS 1
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#define DP_S_MIN 2
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#define DP_S_DOT 3
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#define DP_S_MAX 4
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#define DP_S_MOD 5
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#define DP_S_CONV 6
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#define DP_S_DONE 7
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/* format flags - Bits */
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#define DP_F_MINUS (1 << 0)
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#define DP_F_PLUS (1 << 1)
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#define DP_F_SPACE (1 << 2)
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#define DP_F_NUM (1 << 3)
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#define DP_F_ZERO (1 << 4)
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#define DP_F_UP (1 << 5)
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#define DP_F_UNSIGNED (1 << 6)
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/* conversion flags */
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#define DP_C_SHORT 1
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#define DP_C_LONG 2
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#define DP_C_LDOUBLE 3
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#define DP_C_LLONG 4
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/* some handy macros */
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#define char_to_int(p) (p - '0')
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#define OSSL_MAX(p,q) ((p >= q) ? p : q)
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static void
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_dopr(
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char **sbuffer,
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char **buffer,
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size_t *maxlen,
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size_t *retlen,
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int *truncated,
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const char *format,
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va_list args)
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{
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char ch;
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LLONG value;
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LDOUBLE fvalue;
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char *strvalue;
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int min;
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int max;
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int state;
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int flags;
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int cflags;
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size_t currlen;
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state = DP_S_DEFAULT;
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flags = currlen = cflags = min = 0;
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max = -1;
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ch = *format++;
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while (state != DP_S_DONE) {
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if (ch == '\0' || (buffer == NULL && currlen >= *maxlen))
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state = DP_S_DONE;
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switch (state) {
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case DP_S_DEFAULT:
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if (ch == '%')
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state = DP_S_FLAGS;
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else
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doapr_outch(sbuffer,buffer, &currlen, maxlen, ch);
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ch = *format++;
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break;
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case DP_S_FLAGS:
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switch (ch) {
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case '-':
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flags |= DP_F_MINUS;
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ch = *format++;
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break;
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case '+':
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flags |= DP_F_PLUS;
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ch = *format++;
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break;
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case ' ':
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flags |= DP_F_SPACE;
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ch = *format++;
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break;
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case '#':
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flags |= DP_F_NUM;
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ch = *format++;
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break;
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case '0':
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flags |= DP_F_ZERO;
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ch = *format++;
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break;
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default:
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state = DP_S_MIN;
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break;
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}
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break;
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case DP_S_MIN:
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if (isdigit((unsigned char)ch)) {
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min = 10 * min + char_to_int(ch);
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ch = *format++;
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} else if (ch == '*') {
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min = va_arg(args, int);
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ch = *format++;
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state = DP_S_DOT;
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} else
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state = DP_S_DOT;
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break;
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case DP_S_DOT:
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if (ch == '.') {
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state = DP_S_MAX;
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ch = *format++;
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} else
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state = DP_S_MOD;
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break;
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case DP_S_MAX:
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if (isdigit((unsigned char)ch)) {
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if (max < 0)
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max = 0;
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max = 10 * max + char_to_int(ch);
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ch = *format++;
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} else if (ch == '*') {
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max = va_arg(args, int);
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ch = *format++;
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state = DP_S_MOD;
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} else
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state = DP_S_MOD;
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break;
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case DP_S_MOD:
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switch (ch) {
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case 'h':
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cflags = DP_C_SHORT;
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ch = *format++;
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break;
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case 'l':
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if (*format == 'l') {
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cflags = DP_C_LLONG;
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format++;
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} else
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cflags = DP_C_LONG;
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ch = *format++;
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break;
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case 'q':
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cflags = DP_C_LLONG;
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ch = *format++;
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break;
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case 'L':
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cflags = DP_C_LDOUBLE;
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ch = *format++;
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break;
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default:
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break;
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}
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state = DP_S_CONV;
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break;
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case DP_S_CONV:
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switch (ch) {
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case 'd':
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case 'i':
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switch (cflags) {
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case DP_C_SHORT:
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value = (short int)va_arg(args, int);
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break;
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case DP_C_LONG:
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value = va_arg(args, long int);
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break;
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case DP_C_LLONG:
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value = va_arg(args, LLONG);
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break;
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default:
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value = va_arg(args, int);
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break;
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}
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fmtint(sbuffer, buffer, &currlen, maxlen,
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value, 10, min, max, flags);
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break;
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case 'X':
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flags |= DP_F_UP;
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/* FALLTHROUGH */
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case 'x':
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case 'o':
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case 'u':
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flags |= DP_F_UNSIGNED;
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switch (cflags) {
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case DP_C_SHORT:
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value = (unsigned short int)va_arg(args, unsigned int);
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break;
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case DP_C_LONG:
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value = (LLONG) va_arg(args,
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unsigned long int);
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break;
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case DP_C_LLONG:
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value = va_arg(args, unsigned LLONG);
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break;
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default:
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value = (LLONG) va_arg(args,
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unsigned int);
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break;
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}
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fmtint(sbuffer, buffer, &currlen, maxlen, value,
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ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
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min, max, flags);
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break;
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case 'f':
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if (cflags == DP_C_LDOUBLE)
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fvalue = va_arg(args, LDOUBLE);
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else
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fvalue = va_arg(args, double);
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fmtfp(sbuffer, buffer, &currlen, maxlen,
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fvalue, min, max, flags);
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break;
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case 'E':
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flags |= DP_F_UP;
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case 'e':
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if (cflags == DP_C_LDOUBLE)
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fvalue = va_arg(args, LDOUBLE);
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else
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fvalue = va_arg(args, double);
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break;
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case 'G':
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flags |= DP_F_UP;
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case 'g':
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if (cflags == DP_C_LDOUBLE)
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fvalue = va_arg(args, LDOUBLE);
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else
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fvalue = va_arg(args, double);
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break;
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case 'c':
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doapr_outch(sbuffer, buffer, &currlen, maxlen,
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va_arg(args, int));
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break;
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case 's':
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strvalue = va_arg(args, char *);
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if (max < 0) {
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if (buffer)
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max = INT_MAX;
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else
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max = *maxlen;
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}
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fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
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flags, min, max);
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break;
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case 'p':
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value = (long)va_arg(args, void *);
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fmtint(sbuffer, buffer, &currlen, maxlen,
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value, 16, min, max, flags|DP_F_NUM);
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break;
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case 'n': /* XXX */
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if (cflags == DP_C_SHORT) {
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short int *num;
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num = va_arg(args, short int *);
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*num = currlen;
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} else if (cflags == DP_C_LONG) { /* XXX */
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long int *num;
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num = va_arg(args, long int *);
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*num = (long int) currlen;
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} else if (cflags == DP_C_LLONG) { /* XXX */
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LLONG *num;
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num = va_arg(args, LLONG *);
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*num = (LLONG) currlen;
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} else {
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int *num;
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num = va_arg(args, int *);
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*num = currlen;
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}
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break;
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case '%':
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doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
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break;
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case 'w':
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/* not supported yet, treat as next char */
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ch = *format++;
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break;
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default:
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/* unknown, skip */
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break;
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}
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ch = *format++;
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state = DP_S_DEFAULT;
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flags = cflags = min = 0;
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max = -1;
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break;
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case DP_S_DONE:
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break;
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default:
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break;
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}
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}
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*truncated = (currlen > *maxlen - 1);
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if (*truncated)
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currlen = *maxlen - 1;
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doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0');
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*retlen = currlen - 1;
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return;
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}
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static void
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fmtstr(
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char **sbuffer,
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char **buffer,
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size_t *currlen,
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size_t *maxlen,
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const char *value,
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int flags,
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int min,
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int max)
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{
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int padlen, strln;
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int cnt = 0;
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if (value == 0)
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value = "<NULL>";
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for (strln = 0; value[strln]; ++strln)
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;
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padlen = min - strln;
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if (padlen < 0)
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padlen = 0;
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if (flags & DP_F_MINUS)
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padlen = -padlen;
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while ((padlen > 0) && (cnt < max)) {
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doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
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--padlen;
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++cnt;
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}
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while (*value && (cnt < max)) {
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doapr_outch(sbuffer, buffer, currlen, maxlen, *value++);
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++cnt;
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}
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while ((padlen < 0) && (cnt < max)) {
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doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
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++padlen;
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++cnt;
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}
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}
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|
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static void
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fmtint(
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char **sbuffer,
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char **buffer,
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size_t *currlen,
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size_t *maxlen,
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LLONG value,
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int base,
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int min,
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int max,
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int flags)
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{
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int signvalue = 0;
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const char *prefix = "";
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unsigned LLONG uvalue;
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char convert[DECIMAL_SIZE(value)+3];
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int place = 0;
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int spadlen = 0;
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int zpadlen = 0;
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int caps = 0;
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if (max < 0)
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max = 0;
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uvalue = value;
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if (!(flags & DP_F_UNSIGNED)) {
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if (value < 0) {
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signvalue = '-';
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uvalue = -value;
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} else if (flags & DP_F_PLUS)
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signvalue = '+';
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else if (flags & DP_F_SPACE)
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signvalue = ' ';
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}
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if (flags & DP_F_NUM) {
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if (base == 8) prefix = "0";
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if (base == 16) prefix = "0x";
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}
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if (flags & DP_F_UP)
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caps = 1;
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do {
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convert[place++] =
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(caps ? "0123456789ABCDEF" : "0123456789abcdef")
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[uvalue % (unsigned) base];
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uvalue = (uvalue / (unsigned) base);
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} while (uvalue && (place < (int)sizeof(convert)));
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if (place == sizeof(convert))
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place--;
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convert[place] = 0;
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zpadlen = max - place;
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spadlen = min - OSSL_MAX(max, place) - (signvalue ? 1 : 0) - strlen(prefix);
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if (zpadlen < 0)
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zpadlen = 0;
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if (spadlen < 0)
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spadlen = 0;
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if (flags & DP_F_ZERO) {
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zpadlen = OSSL_MAX(zpadlen, spadlen);
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spadlen = 0;
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}
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if (flags & DP_F_MINUS)
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spadlen = -spadlen;
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/* spaces */
|
|
while (spadlen > 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
|
|
--spadlen;
|
|
}
|
|
|
|
/* sign */
|
|
if (signvalue)
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
|
|
|
|
/* prefix */
|
|
while (*prefix) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix);
|
|
prefix++;
|
|
}
|
|
|
|
/* zeros */
|
|
if (zpadlen > 0) {
|
|
while (zpadlen > 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
|
|
--zpadlen;
|
|
}
|
|
}
|
|
/* digits */
|
|
while (place > 0)
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]);
|
|
|
|
/* left justified spaces */
|
|
while (spadlen < 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
|
|
++spadlen;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static LDOUBLE
|
|
abs_val(LDOUBLE value)
|
|
{
|
|
LDOUBLE result = value;
|
|
if (value < 0)
|
|
result = -value;
|
|
return result;
|
|
}
|
|
|
|
static LDOUBLE
|
|
pow_10(int in_exp)
|
|
{
|
|
LDOUBLE result = 1;
|
|
while (in_exp) {
|
|
result *= 10;
|
|
in_exp--;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static long
|
|
roundv(LDOUBLE value)
|
|
{
|
|
long intpart;
|
|
intpart = (long) value;
|
|
value = value - intpart;
|
|
if (value >= 0.5)
|
|
intpart++;
|
|
return intpart;
|
|
}
|
|
|
|
static void
|
|
fmtfp(
|
|
char **sbuffer,
|
|
char **buffer,
|
|
size_t *currlen,
|
|
size_t *maxlen,
|
|
LDOUBLE fvalue,
|
|
int min,
|
|
int max,
|
|
int flags)
|
|
{
|
|
int signvalue = 0;
|
|
LDOUBLE ufvalue;
|
|
char iconvert[20];
|
|
char fconvert[20];
|
|
int iplace = 0;
|
|
int fplace = 0;
|
|
int padlen = 0;
|
|
int zpadlen = 0;
|
|
int caps = 0;
|
|
long intpart;
|
|
long fracpart;
|
|
long max10;
|
|
|
|
if (max < 0)
|
|
max = 6;
|
|
ufvalue = abs_val(fvalue);
|
|
if (fvalue < 0)
|
|
signvalue = '-';
|
|
else if (flags & DP_F_PLUS)
|
|
signvalue = '+';
|
|
else if (flags & DP_F_SPACE)
|
|
signvalue = ' ';
|
|
|
|
intpart = (long)ufvalue;
|
|
|
|
/* sorry, we only support 9 digits past the decimal because of our
|
|
conversion method */
|
|
if (max > 9)
|
|
max = 9;
|
|
|
|
/* we "cheat" by converting the fractional part to integer by
|
|
multiplying by a factor of 10 */
|
|
max10 = roundv(pow_10(max));
|
|
fracpart = roundv(pow_10(max) * (ufvalue - intpart));
|
|
|
|
if (fracpart >= max10) {
|
|
intpart++;
|
|
fracpart -= max10;
|
|
}
|
|
|
|
/* convert integer part */
|
|
do {
|
|
iconvert[iplace++] =
|
|
(caps ? "0123456789ABCDEF"
|
|
: "0123456789abcdef")[intpart % 10];
|
|
intpart = (intpart / 10);
|
|
} while (intpart && (iplace < (int)sizeof(iconvert)));
|
|
if (iplace == sizeof iconvert)
|
|
iplace--;
|
|
iconvert[iplace] = 0;
|
|
|
|
/* convert fractional part */
|
|
do {
|
|
fconvert[fplace++] =
|
|
(caps ? "0123456789ABCDEF"
|
|
: "0123456789abcdef")[fracpart % 10];
|
|
fracpart = (fracpart / 10);
|
|
} while (fplace < max);
|
|
if (fplace == sizeof fconvert)
|
|
fplace--;
|
|
fconvert[fplace] = 0;
|
|
|
|
/* -1 for decimal point, another -1 if we are printing a sign */
|
|
padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
|
|
zpadlen = max - fplace;
|
|
if (zpadlen < 0)
|
|
zpadlen = 0;
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (flags & DP_F_MINUS)
|
|
padlen = -padlen;
|
|
|
|
if ((flags & DP_F_ZERO) && (padlen > 0)) {
|
|
if (signvalue) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
|
|
--padlen;
|
|
signvalue = 0;
|
|
}
|
|
while (padlen > 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
|
|
--padlen;
|
|
}
|
|
}
|
|
while (padlen > 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
|
|
--padlen;
|
|
}
|
|
if (signvalue)
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
|
|
|
|
while (iplace > 0)
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]);
|
|
|
|
/*
|
|
* Decimal point. This should probably use locale to find the correct
|
|
* char to print out.
|
|
*/
|
|
if (max > 0 || (flags & DP_F_NUM)) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, '.');
|
|
|
|
while (fplace > 0)
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]);
|
|
}
|
|
while (zpadlen > 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
|
|
--zpadlen;
|
|
}
|
|
|
|
while (padlen < 0) {
|
|
doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
doapr_outch(
|
|
char **sbuffer,
|
|
char **buffer,
|
|
size_t *currlen,
|
|
size_t *maxlen,
|
|
int c)
|
|
{
|
|
/* If we haven't at least one buffer, someone has doe a big booboo */
|
|
assert(*sbuffer != NULL || buffer != NULL);
|
|
|
|
if (buffer) {
|
|
while (*currlen >= *maxlen) {
|
|
if (*buffer == NULL) {
|
|
if (*maxlen == 0)
|
|
*maxlen = 1024;
|
|
*buffer = OPENSSL_malloc(*maxlen);
|
|
if (*currlen > 0) {
|
|
assert(*sbuffer != NULL);
|
|
memcpy(*buffer, *sbuffer, *currlen);
|
|
}
|
|
*sbuffer = NULL;
|
|
} else {
|
|
*maxlen += 1024;
|
|
*buffer = OPENSSL_realloc(*buffer, *maxlen);
|
|
}
|
|
}
|
|
/* What to do if *buffer is NULL? */
|
|
assert(*sbuffer != NULL || *buffer != NULL);
|
|
}
|
|
|
|
if (*currlen < *maxlen) {
|
|
if (*sbuffer)
|
|
(*sbuffer)[(*currlen)++] = (char)c;
|
|
else
|
|
(*buffer)[(*currlen)++] = (char)c;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
int BIO_printf (BIO *bio, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
int ret;
|
|
|
|
va_start(args, format);
|
|
|
|
ret = BIO_vprintf(bio, format, args);
|
|
|
|
va_end(args);
|
|
return(ret);
|
|
}
|
|
|
|
int BIO_vprintf (BIO *bio, const char *format, va_list args)
|
|
{
|
|
int ret;
|
|
size_t retlen;
|
|
char hugebuf[1024*2]; /* Was previously 10k, which is unreasonable
|
|
in small-stack environments, like threads
|
|
or DOS programs. */
|
|
char *hugebufp = hugebuf;
|
|
size_t hugebufsize = sizeof(hugebuf);
|
|
char *dynbuf = NULL;
|
|
int ignored;
|
|
|
|
dynbuf = NULL;
|
|
CRYPTO_push_info("doapr()");
|
|
_dopr(&hugebufp, &dynbuf, &hugebufsize,
|
|
&retlen, &ignored, format, args);
|
|
if (dynbuf)
|
|
{
|
|
ret=BIO_write(bio, dynbuf, (int)retlen);
|
|
OPENSSL_free(dynbuf);
|
|
}
|
|
else
|
|
{
|
|
ret=BIO_write(bio, hugebuf, (int)retlen);
|
|
}
|
|
CRYPTO_pop_info();
|
|
return(ret);
|
|
}
|
|
|
|
/* As snprintf is not available everywhere, we provide our own implementation.
|
|
* This function has nothing to do with BIOs, but it's closely related
|
|
* to BIO_printf, and we need *some* name prefix ...
|
|
* (XXX the function should be renamed, but to what?) */
|
|
int BIO_snprintf(char *buf, size_t n, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
int ret;
|
|
|
|
va_start(args, format);
|
|
|
|
ret = BIO_vsnprintf(buf, n, format, args);
|
|
|
|
va_end(args);
|
|
return(ret);
|
|
}
|
|
|
|
int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
|
|
{
|
|
size_t retlen;
|
|
int truncated;
|
|
|
|
_dopr(&buf, NULL, &n, &retlen, &truncated, format, args);
|
|
|
|
if (truncated)
|
|
/* In case of truncation, return -1 like traditional snprintf.
|
|
* (Current drafts for ISO/IEC 9899 say snprintf should return
|
|
* the number of characters that would have been written,
|
|
* had the buffer been large enough.) */
|
|
return -1;
|
|
else
|
|
return (retlen <= INT_MAX) ? (int)retlen : -1;
|
|
}
|
|
|