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863 lines
25 KiB
863 lines
25 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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|
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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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/* |
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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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|
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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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/*- |
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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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|
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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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|
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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 int fmtstr(char **, char **, size_t *, size_t *, |
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const char *, int, int, int); |
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static int fmtint(char **, char **, size_t *, size_t *, |
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LLONG, int, int, int, int); |
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static int fmtfp(char **, char **, size_t *, size_t *, |
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LDOUBLE, int, int, int); |
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static int doapr_outch(char **, char **, size_t *, size_t *, int); |
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static int _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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|
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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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|
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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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|
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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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|
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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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|
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static int |
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_dopr(char **sbuffer, |
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char **buffer, |
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size_t *maxlen, |
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size_t *retlen, int *truncated, const char *format, 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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|
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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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|
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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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|
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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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if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch)) |
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return 0; |
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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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if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, 10, min, |
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max, flags)) |
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return 0; |
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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, 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, unsigned int); |
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break; |
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} |
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if (!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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return 0; |
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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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if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max, |
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flags)) |
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return 0; |
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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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if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, |
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va_arg(args, int))) |
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return 0; |
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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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if (!fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue, |
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flags, min, max)) |
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return 0; |
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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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if (!fmtint(sbuffer, buffer, &currlen, maxlen, |
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value, 16, min, max, flags | DP_F_NUM)) |
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return 0; |
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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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if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch)) |
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return 0; |
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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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if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0')) |
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return 0; |
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*retlen = currlen - 1; |
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return 1; |
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} |
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|
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static int |
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fmtstr(char **sbuffer, |
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char **buffer, |
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size_t *currlen, |
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size_t *maxlen, const char *value, int flags, int min, int max) |
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{ |
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int padlen; |
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size_t strln; |
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int cnt = 0; |
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|
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if (value == 0) |
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value = "<NULL>"; |
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|
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strln = strlen(value); |
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if (strln > INT_MAX) |
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strln = INT_MAX; |
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|
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padlen = min - strln; |
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if (min < 0 || 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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|
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while ((padlen > 0) && (cnt < max)) { |
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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
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return 0; |
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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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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *value++)) |
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return 0; |
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++cnt; |
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} |
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while ((padlen < 0) && (cnt < max)) { |
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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
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return 0; |
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++padlen; |
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++cnt; |
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} |
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return 1; |
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} |
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|
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static int |
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fmtint(char **sbuffer, |
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char **buffer, |
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size_t *currlen, |
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size_t *maxlen, LLONG value, int base, int min, int max, 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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|
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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) |
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prefix = "0"; |
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if (base == 16) |
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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++] = (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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|
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zpadlen = max - place; |
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spadlen = |
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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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|
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/* spaces */ |
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while (spadlen > 0) { |
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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
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return 0; |
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--spadlen; |
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} |
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|
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/* sign */ |
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if (signvalue) |
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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) |
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return 0; |
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|
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/* prefix */ |
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while (*prefix) { |
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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix)) |
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return 0; |
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prefix++; |
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} |
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|
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/* zeros */ |
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if (zpadlen > 0) { |
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while (zpadlen > 0) { |
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if(!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) |
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return 0; |
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--zpadlen; |
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} |
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} |
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/* digits */ |
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while (place > 0) { |
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if (!doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place])) |
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return 0; |
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} |
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|
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/* left justified spaces */ |
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while (spadlen < 0) { |
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if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
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return 0; |
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++spadlen; |
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} |
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return 1; |
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} |
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|
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static LDOUBLE abs_val(LDOUBLE value) |
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{ |
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LDOUBLE result = value; |
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if (value < 0) |
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result = -value; |
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return result; |
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} |
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|
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static LDOUBLE pow_10(int in_exp) |
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{ |
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LDOUBLE result = 1; |
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while (in_exp) { |
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result *= 10; |
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in_exp--; |
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} |
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return result; |
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} |
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|
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static long roundv(LDOUBLE value) |
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{ |
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long intpart; |
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intpart = (long)value; |
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value = value - intpart; |
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if (value >= 0.5) |
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intpart++; |
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return intpart; |
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} |
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|
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static int |
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fmtfp(char **sbuffer, |
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char **buffer, |
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size_t *currlen, |
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size_t *maxlen, LDOUBLE fvalue, int min, int max, int flags) |
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{ |
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int signvalue = 0; |
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LDOUBLE ufvalue; |
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char iconvert[20]; |
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char fconvert[20]; |
|
int iplace = 0; |
|
int fplace = 0; |
|
int padlen = 0; |
|
int zpadlen = 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++] = "0123456789"[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++] = "0123456789"[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) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) |
|
return 0; |
|
--padlen; |
|
signvalue = 0; |
|
} |
|
while (padlen > 0) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) |
|
return 0; |
|
--padlen; |
|
} |
|
} |
|
while (padlen > 0) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
|
return 0; |
|
--padlen; |
|
} |
|
if (signvalue && !doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) |
|
return 0; |
|
|
|
while (iplace > 0) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace])) |
|
return 0; |
|
} |
|
|
|
/* |
|
* Decimal point. This should probably use locale to find the correct |
|
* char to print out. |
|
*/ |
|
if (max > 0 || (flags & DP_F_NUM)) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '.')) |
|
return 0; |
|
|
|
while (fplace > 0) { |
|
if(!doapr_outch(sbuffer, buffer, currlen, maxlen, |
|
fconvert[--fplace])) |
|
return 0; |
|
} |
|
} |
|
while (zpadlen > 0) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) |
|
return 0; |
|
--zpadlen; |
|
} |
|
|
|
while (padlen < 0) { |
|
if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
|
return 0; |
|
++padlen; |
|
} |
|
return 1; |
|
} |
|
|
|
#define BUFFER_INC 1024 |
|
|
|
static int |
|
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); |
|
|
|
/* |currlen| must always be <= |*maxlen| */ |
|
assert(*currlen <= *maxlen); |
|
|
|
if (buffer && *currlen == *maxlen) { |
|
if (*maxlen > INT_MAX - BUFFER_INC) |
|
return 0; |
|
|
|
*maxlen += BUFFER_INC; |
|
if (*buffer == NULL) { |
|
*buffer = OPENSSL_malloc(*maxlen); |
|
if (*buffer == NULL) |
|
return 0; |
|
if (*currlen > 0) { |
|
assert(*sbuffer != NULL); |
|
memcpy(*buffer, *sbuffer, *currlen); |
|
} |
|
*sbuffer = NULL; |
|
} else { |
|
char *tmpbuf; |
|
tmpbuf = OPENSSL_realloc(*buffer, *maxlen); |
|
if (tmpbuf == NULL) |
|
return 0; |
|
*buffer = tmpbuf; |
|
} |
|
} |
|
|
|
if (*currlen < *maxlen) { |
|
if (*sbuffer) |
|
(*sbuffer)[(*currlen)++] = (char)c; |
|
else |
|
(*buffer)[(*currlen)++] = (char)c; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
/***************************************************************************/ |
|
|
|
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()"); |
|
if (!_dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format, |
|
args)) { |
|
OPENSSL_free(dynbuf); |
|
return -1; |
|
} |
|
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; |
|
|
|
if(!_dopr(&buf, NULL, &n, &retlen, &truncated, format, args)) |
|
return -1; |
|
|
|
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; |
|
}
|
|
|