sl@0: /* crypto/bio/b_print.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: /* disable assert() unless BIO_DEBUG has been defined */
sl@0: #ifndef BIO_DEBUG
sl@0: # ifndef NDEBUG
sl@0: #  define NDEBUG
sl@0: # endif
sl@0: #endif
sl@0: 
sl@0: /* 
sl@0:  * Stolen from tjh's ssl/ssl_trc.c stuff.
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <string.h>
sl@0: #include <ctype.h>
sl@0: #include <assert.h>
sl@0: #include <limits.h>
sl@0: #include "cryptlib.h"
sl@0: #ifndef NO_SYS_TYPES_H
sl@0: #include <sys/types.h>
sl@0: #endif
sl@0: #include <openssl/bn.h>         /* To get BN_LLONG properly defined */
sl@0: #include <openssl/bio.h>
sl@0: 
sl@0: #if defined(BN_LLONG) || defined(SIXTY_FOUR_BIT)
sl@0: # ifndef HAVE_LONG_LONG
sl@0: #  define HAVE_LONG_LONG 1
sl@0: # endif
sl@0: #endif
sl@0: 
sl@0: /***************************************************************************/
sl@0: 
sl@0: /*
sl@0:  * Copyright Patrick Powell 1995
sl@0:  * This code is based on code written by Patrick Powell <papowell@astart.com>
sl@0:  * It may be used for any purpose as long as this notice remains intact
sl@0:  * on all source code distributions.
sl@0:  */
sl@0: 
sl@0: /*
sl@0:  * This code contains numerious changes and enhancements which were
sl@0:  * made by lots of contributors over the last years to Patrick Powell's
sl@0:  * original code:
sl@0:  *
sl@0:  * o Patrick Powell <papowell@astart.com>      (1995)
sl@0:  * o Brandon Long <blong@fiction.net>          (1996, for Mutt)
sl@0:  * o Thomas Roessler <roessler@guug.de>        (1998, for Mutt)
sl@0:  * o Michael Elkins <me@cs.hmc.edu>            (1998, for Mutt)
sl@0:  * o Andrew Tridgell <tridge@samba.org>        (1998, for Samba)
sl@0:  * o Luke Mewburn <lukem@netbsd.org>           (1999, for LukemFTP)
sl@0:  * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
sl@0:  * o ...                                       (for OpenSSL)
sl@0:  */
sl@0: 
sl@0: #ifdef HAVE_LONG_DOUBLE
sl@0: #define LDOUBLE long double
sl@0: #else
sl@0: #define LDOUBLE double
sl@0: #endif
sl@0: 
sl@0: #if HAVE_LONG_LONG
sl@0: # if defined(OPENSSL_SYS_WIN32) && !defined(__GNUC__)
sl@0: # define LLONG __int64
sl@0: # else
sl@0: # define LLONG long long
sl@0: # endif
sl@0: #else
sl@0: #define LLONG long
sl@0: #endif
sl@0: 
sl@0: static void fmtstr     (char **, char **, size_t *, size_t *,
sl@0: 			const char *, int, int, int);
sl@0: static void fmtint     (char **, char **, size_t *, size_t *,
sl@0: 			LLONG, int, int, int, int);
sl@0: static void fmtfp      (char **, char **, size_t *, size_t *,
sl@0: 			LDOUBLE, int, int, int);
sl@0: static void doapr_outch (char **, char **, size_t *, size_t *, int);
sl@0: static void _dopr(char **sbuffer, char **buffer,
sl@0: 		  size_t *maxlen, size_t *retlen, int *truncated,
sl@0: 		  const char *format, va_list args);
sl@0: 
sl@0: /* format read states */
sl@0: #define DP_S_DEFAULT    0
sl@0: #define DP_S_FLAGS      1
sl@0: #define DP_S_MIN        2
sl@0: #define DP_S_DOT        3
sl@0: #define DP_S_MAX        4
sl@0: #define DP_S_MOD        5
sl@0: #define DP_S_CONV       6
sl@0: #define DP_S_DONE       7
sl@0: 
sl@0: /* format flags - Bits */
sl@0: #define DP_F_MINUS      (1 << 0)
sl@0: #define DP_F_PLUS       (1 << 1)
sl@0: #define DP_F_SPACE      (1 << 2)
sl@0: #define DP_F_NUM        (1 << 3)
sl@0: #define DP_F_ZERO       (1 << 4)
sl@0: #define DP_F_UP         (1 << 5)
sl@0: #define DP_F_UNSIGNED   (1 << 6)
sl@0: 
sl@0: /* conversion flags */
sl@0: #define DP_C_SHORT      1
sl@0: #define DP_C_LONG       2
sl@0: #define DP_C_LDOUBLE    3
sl@0: #define DP_C_LLONG      4
sl@0: 
sl@0: /* some handy macros */
sl@0: #define char_to_int(p) (p - '0')
sl@0: #define OSSL_MAX(p,q) ((p >= q) ? p : q)
sl@0: 
sl@0: static void
sl@0: _dopr(
sl@0:     char **sbuffer,
sl@0:     char **buffer,
sl@0:     size_t *maxlen,
sl@0:     size_t *retlen,
sl@0:     int *truncated,
sl@0:     const char *format,
sl@0:     va_list args)
sl@0: {
sl@0:     char ch;
sl@0:     LLONG value;
sl@0:     LDOUBLE fvalue;
sl@0:     char *strvalue;
sl@0:     int min;
sl@0:     int max;
sl@0:     int state;
sl@0:     int flags;
sl@0:     int cflags;
sl@0:     size_t currlen;
sl@0: 
sl@0:     state = DP_S_DEFAULT;
sl@0:     flags = currlen = cflags = min = 0;
sl@0:     max = -1;
sl@0:     ch = *format++;
sl@0: 
sl@0:     while (state != DP_S_DONE) {
sl@0:         if (ch == '\0' || (buffer == NULL && currlen >= *maxlen))
sl@0:             state = DP_S_DONE;
sl@0: 
sl@0:         switch (state) {
sl@0:         case DP_S_DEFAULT:
sl@0:             if (ch == '%')
sl@0:                 state = DP_S_FLAGS;
sl@0:             else
sl@0:                 doapr_outch(sbuffer,buffer, &currlen, maxlen, ch);
sl@0:             ch = *format++;
sl@0:             break;
sl@0:         case DP_S_FLAGS:
sl@0:             switch (ch) {
sl@0:             case '-':
sl@0:                 flags |= DP_F_MINUS;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case '+':
sl@0:                 flags |= DP_F_PLUS;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case ' ':
sl@0:                 flags |= DP_F_SPACE;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case '#':
sl@0:                 flags |= DP_F_NUM;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case '0':
sl@0:                 flags |= DP_F_ZERO;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             default:
sl@0:                 state = DP_S_MIN;
sl@0:                 break;
sl@0:             }
sl@0:             break;
sl@0:         case DP_S_MIN:
sl@0:             if (isdigit((unsigned char)ch)) {
sl@0:                 min = 10 * min + char_to_int(ch);
sl@0:                 ch = *format++;
sl@0:             } else if (ch == '*') {
sl@0:                 min = va_arg(args, int);
sl@0:                 ch = *format++;
sl@0:                 state = DP_S_DOT;
sl@0:             } else
sl@0:                 state = DP_S_DOT;
sl@0:             break;
sl@0:         case DP_S_DOT:
sl@0:             if (ch == '.') {
sl@0:                 state = DP_S_MAX;
sl@0:                 ch = *format++;
sl@0:             } else
sl@0:                 state = DP_S_MOD;
sl@0:             break;
sl@0:         case DP_S_MAX:
sl@0:             if (isdigit((unsigned char)ch)) {
sl@0:                 if (max < 0)
sl@0:                     max = 0;
sl@0:                 max = 10 * max + char_to_int(ch);
sl@0:                 ch = *format++;
sl@0:             } else if (ch == '*') {
sl@0:                 max = va_arg(args, int);
sl@0:                 ch = *format++;
sl@0:                 state = DP_S_MOD;
sl@0:             } else
sl@0:                 state = DP_S_MOD;
sl@0:             break;
sl@0:         case DP_S_MOD:
sl@0:             switch (ch) {
sl@0:             case 'h':
sl@0:                 cflags = DP_C_SHORT;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case 'l':
sl@0:                 if (*format == 'l') {
sl@0:                     cflags = DP_C_LLONG;
sl@0:                     format++;
sl@0:                 } else
sl@0:                     cflags = DP_C_LONG;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case 'q':
sl@0:                 cflags = DP_C_LLONG;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             case 'L':
sl@0:                 cflags = DP_C_LDOUBLE;
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             default:
sl@0:                 break;
sl@0:             }
sl@0:             state = DP_S_CONV;
sl@0:             break;
sl@0:         case DP_S_CONV:
sl@0:             switch (ch) {
sl@0:             case 'd':
sl@0:             case 'i':
sl@0:                 switch (cflags) {
sl@0:                 case DP_C_SHORT:
sl@0:                     value = (short int)va_arg(args, int);
sl@0:                     break;
sl@0:                 case DP_C_LONG:
sl@0:                     value = va_arg(args, long int);
sl@0:                     break;
sl@0:                 case DP_C_LLONG:
sl@0:                     value = va_arg(args, LLONG);
sl@0:                     break;
sl@0:                 default:
sl@0:                     value = va_arg(args, int);
sl@0:                     break;
sl@0:                 }
sl@0:                 fmtint(sbuffer, buffer, &currlen, maxlen,
sl@0:                        value, 10, min, max, flags);
sl@0:                 break;
sl@0:             case 'X':
sl@0:                 flags |= DP_F_UP;
sl@0:                 /* FALLTHROUGH */
sl@0:             case 'x':
sl@0:             case 'o':
sl@0:             case 'u':
sl@0:                 flags |= DP_F_UNSIGNED;
sl@0:                 switch (cflags) {
sl@0:                 case DP_C_SHORT:
sl@0:                     value = (unsigned short int)va_arg(args, unsigned int);
sl@0:                     break;
sl@0:                 case DP_C_LONG:
sl@0:                     value = (LLONG) va_arg(args,
sl@0:                         unsigned long int);
sl@0:                     break;
sl@0:                 case DP_C_LLONG:
sl@0:                     value = va_arg(args, unsigned LLONG);
sl@0:                     break;
sl@0:                 default:
sl@0:                     value = (LLONG) va_arg(args,
sl@0:                         unsigned int);
sl@0:                     break;
sl@0:                 }
sl@0:                 fmtint(sbuffer, buffer, &currlen, maxlen, value,
sl@0:                        ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
sl@0:                        min, max, flags);
sl@0:                 break;
sl@0:             case 'f':
sl@0:                 if (cflags == DP_C_LDOUBLE)
sl@0:                     fvalue = va_arg(args, LDOUBLE);
sl@0:                 else
sl@0:                     fvalue = va_arg(args, double);
sl@0:                 fmtfp(sbuffer, buffer, &currlen, maxlen,
sl@0:                       fvalue, min, max, flags);
sl@0:                 break;
sl@0:             case 'E':
sl@0:                 flags |= DP_F_UP;
sl@0:             case 'e':
sl@0:                 if (cflags == DP_C_LDOUBLE)
sl@0:                     fvalue = va_arg(args, LDOUBLE);
sl@0:                 else
sl@0:                     fvalue = va_arg(args, double);
sl@0:                 break;
sl@0:             case 'G':
sl@0:                 flags |= DP_F_UP;
sl@0:             case 'g':
sl@0:                 if (cflags == DP_C_LDOUBLE)
sl@0:                     fvalue = va_arg(args, LDOUBLE);
sl@0:                 else
sl@0:                     fvalue = va_arg(args, double);
sl@0:                 break;
sl@0:             case 'c':
sl@0:                 doapr_outch(sbuffer, buffer, &currlen, maxlen,
sl@0:                     va_arg(args, int));
sl@0:                 break;
sl@0:             case 's':
sl@0:                 strvalue = va_arg(args, char *);
sl@0:                 if (max < 0) {
sl@0: 		    if (buffer)
sl@0: 			max = INT_MAX;
sl@0: 		    else
sl@0: 			max = *maxlen;
sl@0: 		}
sl@0:                 fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
sl@0:                        flags, min, max);
sl@0:                 break;
sl@0:             case 'p':
sl@0:                 value = (long)va_arg(args, void *);
sl@0:                 fmtint(sbuffer, buffer, &currlen, maxlen,
sl@0:                     value, 16, min, max, flags|DP_F_NUM);
sl@0:                 break;
sl@0:             case 'n': /* XXX */
sl@0:                 if (cflags == DP_C_SHORT) {
sl@0:                     short int *num;
sl@0:                     num = va_arg(args, short int *);
sl@0:                     *num = currlen;
sl@0:                 } else if (cflags == DP_C_LONG) { /* XXX */
sl@0:                     long int *num;
sl@0:                     num = va_arg(args, long int *);
sl@0:                     *num = (long int) currlen;
sl@0:                 } else if (cflags == DP_C_LLONG) { /* XXX */
sl@0:                     LLONG *num;
sl@0:                     num = va_arg(args, LLONG *);
sl@0:                     *num = (LLONG) currlen;
sl@0:                 } else {
sl@0:                     int    *num;
sl@0:                     num = va_arg(args, int *);
sl@0:                     *num = currlen;
sl@0:                 }
sl@0:                 break;
sl@0:             case '%':
sl@0:                 doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
sl@0:                 break;
sl@0:             case 'w':
sl@0:                 /* not supported yet, treat as next char */
sl@0:                 ch = *format++;
sl@0:                 break;
sl@0:             default:
sl@0:                 /* unknown, skip */
sl@0:                 break;
sl@0:             }
sl@0:             ch = *format++;
sl@0:             state = DP_S_DEFAULT;
sl@0:             flags = cflags = min = 0;
sl@0:             max = -1;
sl@0:             break;
sl@0:         case DP_S_DONE:
sl@0:             break;
sl@0:         default:
sl@0:             break;
sl@0:         }
sl@0:     }
sl@0:     *truncated = (currlen > *maxlen - 1);
sl@0:     if (*truncated)
sl@0:         currlen = *maxlen - 1;
sl@0:     doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0');
sl@0:     *retlen = currlen - 1;
sl@0:     return;
sl@0: }
sl@0: 
sl@0: static void
sl@0: fmtstr(
sl@0:     char **sbuffer,
sl@0:     char **buffer,
sl@0:     size_t *currlen,
sl@0:     size_t *maxlen,
sl@0:     const char *value,
sl@0:     int flags,
sl@0:     int min,
sl@0:     int max)
sl@0: {
sl@0:     int padlen, strln;
sl@0:     int cnt = 0;
sl@0: 
sl@0:     if (value == 0)
sl@0:         value = "<NULL>";
sl@0:     for (strln = 0; value[strln]; ++strln)
sl@0:         ;
sl@0:     padlen = min - strln;
sl@0:     if (padlen < 0)
sl@0:         padlen = 0;
sl@0:     if (flags & DP_F_MINUS)
sl@0:         padlen = -padlen;
sl@0: 
sl@0:     while ((padlen > 0) && (cnt < max)) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
sl@0:         --padlen;
sl@0:         ++cnt;
sl@0:     }
sl@0:     while (*value && (cnt < max)) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, *value++);
sl@0:         ++cnt;
sl@0:     }
sl@0:     while ((padlen < 0) && (cnt < max)) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
sl@0:         ++padlen;
sl@0:         ++cnt;
sl@0:     }
sl@0: }
sl@0: 
sl@0: static void
sl@0: fmtint(
sl@0:     char **sbuffer,
sl@0:     char **buffer,
sl@0:     size_t *currlen,
sl@0:     size_t *maxlen,
sl@0:     LLONG value,
sl@0:     int base,
sl@0:     int min,
sl@0:     int max,
sl@0:     int flags)
sl@0: {
sl@0:     int signvalue = 0;
sl@0:     const char *prefix = "";
sl@0:     unsigned LLONG uvalue;
sl@0:     char convert[DECIMAL_SIZE(value)+3];
sl@0:     int place = 0;
sl@0:     int spadlen = 0;
sl@0:     int zpadlen = 0;
sl@0:     int caps = 0;
sl@0: 
sl@0:     if (max < 0)
sl@0:         max = 0;
sl@0:     uvalue = value;
sl@0:     if (!(flags & DP_F_UNSIGNED)) {
sl@0:         if (value < 0) {
sl@0:             signvalue = '-';
sl@0:             uvalue = -value;
sl@0:         } else if (flags & DP_F_PLUS)
sl@0:             signvalue = '+';
sl@0:         else if (flags & DP_F_SPACE)
sl@0:             signvalue = ' ';
sl@0:     }
sl@0:     if (flags & DP_F_NUM) {
sl@0: 	if (base == 8) prefix = "0";
sl@0: 	if (base == 16) prefix = "0x";
sl@0:     }
sl@0:     if (flags & DP_F_UP)
sl@0:         caps = 1;
sl@0:     do {
sl@0:         convert[place++] =
sl@0:             (caps ? "0123456789ABCDEF" : "0123456789abcdef")
sl@0:             [uvalue % (unsigned) base];
sl@0:         uvalue = (uvalue / (unsigned) base);
sl@0:     } while (uvalue && (place < (int)sizeof(convert)));
sl@0:     if (place == sizeof(convert))
sl@0:         place--;
sl@0:     convert[place] = 0;
sl@0: 
sl@0:     zpadlen = max - place;
sl@0:     spadlen = min - OSSL_MAX(max, place) - (signvalue ? 1 : 0) - strlen(prefix);
sl@0:     if (zpadlen < 0)
sl@0:         zpadlen = 0;
sl@0:     if (spadlen < 0)
sl@0:         spadlen = 0;
sl@0:     if (flags & DP_F_ZERO) {
sl@0:         zpadlen = OSSL_MAX(zpadlen, spadlen);
sl@0:         spadlen = 0;
sl@0:     }
sl@0:     if (flags & DP_F_MINUS)
sl@0:         spadlen = -spadlen;
sl@0: 
sl@0:     /* spaces */
sl@0:     while (spadlen > 0) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
sl@0:         --spadlen;
sl@0:     }
sl@0: 
sl@0:     /* sign */
sl@0:     if (signvalue)
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
sl@0: 
sl@0:     /* prefix */
sl@0:     while (*prefix) {
sl@0: 	doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix);
sl@0: 	prefix++;
sl@0:     }
sl@0: 
sl@0:     /* zeros */
sl@0:     if (zpadlen > 0) {
sl@0:         while (zpadlen > 0) {
sl@0:             doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
sl@0:             --zpadlen;
sl@0:         }
sl@0:     }
sl@0:     /* digits */
sl@0:     while (place > 0)
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]);
sl@0: 
sl@0:     /* left justified spaces */
sl@0:     while (spadlen < 0) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
sl@0:         ++spadlen;
sl@0:     }
sl@0:     return;
sl@0: }
sl@0: 
sl@0: static LDOUBLE
sl@0: abs_val(LDOUBLE value)
sl@0: {
sl@0:     LDOUBLE result = value;
sl@0:     if (value < 0)
sl@0:         result = -value;
sl@0:     return result;
sl@0: }
sl@0: 
sl@0: static LDOUBLE
sl@0: pow_10(int in_exp)
sl@0: {
sl@0:     LDOUBLE result = 1;
sl@0:     while (in_exp) {
sl@0:         result *= 10;
sl@0:         in_exp--;
sl@0:     }
sl@0:     return result;
sl@0: }
sl@0: 
sl@0: static long
sl@0: roundv(LDOUBLE value)
sl@0: {
sl@0:     long intpart;
sl@0:     intpart = (long) value;
sl@0:     value = value - intpart;
sl@0:     if (value >= 0.5)
sl@0:         intpart++;
sl@0:     return intpart;
sl@0: }
sl@0: 
sl@0: static void
sl@0: fmtfp(
sl@0:     char **sbuffer,
sl@0:     char **buffer,
sl@0:     size_t *currlen,
sl@0:     size_t *maxlen,
sl@0:     LDOUBLE fvalue,
sl@0:     int min,
sl@0:     int max,
sl@0:     int flags)
sl@0: {
sl@0:     int signvalue = 0;
sl@0:     LDOUBLE ufvalue;
sl@0:     char iconvert[20];
sl@0:     char fconvert[20];
sl@0:     int iplace = 0;
sl@0:     int fplace = 0;
sl@0:     int padlen = 0;
sl@0:     int zpadlen = 0;
sl@0:     int caps = 0;
sl@0:     long intpart;
sl@0:     long fracpart;
sl@0:     long max10;
sl@0: 
sl@0:     if (max < 0)
sl@0:         max = 6;
sl@0:     ufvalue = abs_val(fvalue);
sl@0:     if (fvalue < 0)
sl@0:         signvalue = '-';
sl@0:     else if (flags & DP_F_PLUS)
sl@0:         signvalue = '+';
sl@0:     else if (flags & DP_F_SPACE)
sl@0:         signvalue = ' ';
sl@0: 
sl@0:     intpart = (long)ufvalue;
sl@0: 
sl@0:     /* sorry, we only support 9 digits past the decimal because of our
sl@0:        conversion method */
sl@0:     if (max > 9)
sl@0:         max = 9;
sl@0: 
sl@0:     /* we "cheat" by converting the fractional part to integer by
sl@0:        multiplying by a factor of 10 */
sl@0:     max10 = roundv(pow_10(max));
sl@0:     fracpart = roundv(pow_10(max) * (ufvalue - intpart));
sl@0: 
sl@0:     if (fracpart >= max10) {
sl@0:         intpart++;
sl@0:         fracpart -= max10;
sl@0:     }
sl@0: 
sl@0:     /* convert integer part */
sl@0:     do {
sl@0:         iconvert[iplace++] =
sl@0:             (caps ? "0123456789ABCDEF"
sl@0:               : "0123456789abcdef")[intpart % 10];
sl@0:         intpart = (intpart / 10);
sl@0:     } while (intpart && (iplace < (int)sizeof(iconvert)));
sl@0:     if (iplace == sizeof iconvert)
sl@0:         iplace--;
sl@0:     iconvert[iplace] = 0;
sl@0: 
sl@0:     /* convert fractional part */
sl@0:     do {
sl@0:         fconvert[fplace++] =
sl@0:             (caps ? "0123456789ABCDEF"
sl@0:               : "0123456789abcdef")[fracpart % 10];
sl@0:         fracpart = (fracpart / 10);
sl@0:     } while (fplace < max);
sl@0:     if (fplace == sizeof fconvert)
sl@0:         fplace--;
sl@0:     fconvert[fplace] = 0;
sl@0: 
sl@0:     /* -1 for decimal point, another -1 if we are printing a sign */
sl@0:     padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
sl@0:     zpadlen = max - fplace;
sl@0:     if (zpadlen < 0)
sl@0:         zpadlen = 0;
sl@0:     if (padlen < 0)
sl@0:         padlen = 0;
sl@0:     if (flags & DP_F_MINUS)
sl@0:         padlen = -padlen;
sl@0: 
sl@0:     if ((flags & DP_F_ZERO) && (padlen > 0)) {
sl@0:         if (signvalue) {
sl@0:             doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
sl@0:             --padlen;
sl@0:             signvalue = 0;
sl@0:         }
sl@0:         while (padlen > 0) {
sl@0:             doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
sl@0:             --padlen;
sl@0:         }
sl@0:     }
sl@0:     while (padlen > 0) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
sl@0:         --padlen;
sl@0:     }
sl@0:     if (signvalue)
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
sl@0: 
sl@0:     while (iplace > 0)
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]);
sl@0: 
sl@0:     /*
sl@0:      * Decimal point. This should probably use locale to find the correct
sl@0:      * char to print out.
sl@0:      */
sl@0:     if (max > 0 || (flags & DP_F_NUM)) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, '.');
sl@0: 
sl@0:         while (fplace > 0)
sl@0:             doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]);
sl@0:     }
sl@0:     while (zpadlen > 0) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
sl@0:         --zpadlen;
sl@0:     }
sl@0: 
sl@0:     while (padlen < 0) {
sl@0:         doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
sl@0:         ++padlen;
sl@0:     }
sl@0: }
sl@0: 
sl@0: static void
sl@0: doapr_outch(
sl@0:     char **sbuffer,
sl@0:     char **buffer,
sl@0:     size_t *currlen,
sl@0:     size_t *maxlen,
sl@0:     int c)
sl@0: {
sl@0:     /* If we haven't at least one buffer, someone has doe a big booboo */
sl@0:     assert(*sbuffer != NULL || buffer != NULL);
sl@0: 
sl@0:     if (buffer) {
sl@0: 	while (*currlen >= *maxlen) {
sl@0: 	    if (*buffer == NULL) {
sl@0: 		if (*maxlen == 0)
sl@0: 		    *maxlen = 1024;
sl@0: 		*buffer = OPENSSL_malloc(*maxlen);
sl@0: 		if (*currlen > 0) {
sl@0: 		    assert(*sbuffer != NULL);
sl@0: 		    memcpy(*buffer, *sbuffer, *currlen);
sl@0: 		}
sl@0: 		*sbuffer = NULL;
sl@0: 	    } else {
sl@0: 		*maxlen += 1024;
sl@0: 		*buffer = OPENSSL_realloc(*buffer, *maxlen);
sl@0: 	    }
sl@0: 	}
sl@0: 	/* What to do if *buffer is NULL? */
sl@0: 	assert(*sbuffer != NULL || *buffer != NULL);
sl@0:     }
sl@0: 
sl@0:     if (*currlen < *maxlen) {
sl@0: 	if (*sbuffer)
sl@0: 	    (*sbuffer)[(*currlen)++] = (char)c;
sl@0: 	else
sl@0: 	    (*buffer)[(*currlen)++] = (char)c;
sl@0:     }
sl@0: 
sl@0:     return;
sl@0: }
sl@0: 
sl@0: /***************************************************************************/
sl@0: 
sl@0: EXPORT_C int BIO_printf (BIO *bio, const char *format, ...)
sl@0: 	{
sl@0: 	va_list args;
sl@0: 	int ret;
sl@0: 
sl@0: 	va_start(args, format);
sl@0: 
sl@0: 	ret = BIO_vprintf(bio, format, args);
sl@0: 
sl@0: 	va_end(args);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_vprintf (BIO *bio, const char *format, va_list args)
sl@0: 	{
sl@0: 	int ret;
sl@0: 	size_t retlen;
sl@0: 	#ifndef SYMBIAN
sl@0: 	char hugebuf[1024*2];	/* Was previously 10k, which is unreasonable
sl@0: 				   in small-stack environments, like threads
sl@0: 				   or DOS programs. */
sl@0: #else
sl@0:   char hugebuf[512];
sl@0: #endif				   
sl@0: 	char *hugebufp = hugebuf;
sl@0: 	size_t hugebufsize = sizeof(hugebuf);
sl@0: 	char *dynbuf = NULL;
sl@0: 	int ignored;
sl@0: 
sl@0: 	dynbuf = NULL;
sl@0: 	CRYPTO_push_info("doapr()");
sl@0: 	_dopr(&hugebufp, &dynbuf, &hugebufsize,
sl@0: 		&retlen, &ignored, format, args);
sl@0: 	if (dynbuf)
sl@0: 		{
sl@0: 		ret=BIO_write(bio, dynbuf, (int)retlen);
sl@0: 		OPENSSL_free(dynbuf);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		ret=BIO_write(bio, hugebuf, (int)retlen);
sl@0: 		}
sl@0: 	CRYPTO_pop_info();
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: /* As snprintf is not available everywhere, we provide our own implementation.
sl@0:  * This function has nothing to do with BIOs, but it's closely related
sl@0:  * to BIO_printf, and we need *some* name prefix ...
sl@0:  * (XXX  the function should be renamed, but to what?) */
sl@0: EXPORT_C int BIO_snprintf(char *buf, size_t n, const char *format, ...)
sl@0: 	{
sl@0: 	va_list args;
sl@0: 	int ret;
sl@0: 
sl@0: 	va_start(args, format);
sl@0: 
sl@0: 	ret = BIO_vsnprintf(buf, n, format, args);
sl@0: 
sl@0: 	va_end(args);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
sl@0: 	{
sl@0: 	size_t retlen;
sl@0: 	int truncated;
sl@0: 
sl@0: 	_dopr(&buf, NULL, &n, &retlen, &truncated, format, args);
sl@0: 
sl@0: 	if (truncated)
sl@0: 		/* In case of truncation, return -1 like traditional snprintf.
sl@0: 		 * (Current drafts for ISO/IEC 9899 say snprintf should return
sl@0: 		 * the number of characters that would have been written,
sl@0: 		 * had the buffer been large enough.) */
sl@0: 		return -1;
sl@0: 	else
sl@0: 		return (retlen <= INT_MAX) ? (int)retlen : -1;
sl@0: 	}