-/* crypto/bio/b_print.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-/*
- * Stolen from tjh's ssl/ssl_trc.c stuff.
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include <stdarg.h>
#include <string.h>
#include <ctype.h>
-#include <sys/types.h>
-#include "cryptlib.h"
+#include "internal/numbers.h"
+#include "internal/cryptlib.h"
+#ifndef NO_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#include <openssl/bn.h> /* To get BN_LLONG properly defined */
#include <openssl/bio.h>
-#ifdef BN_LLONG
+#if defined(BN_LLONG) || defined(SIXTY_FOUR_BIT)
# ifndef HAVE_LONG_LONG
-# define HAVE_LONG_LONG
+# define HAVE_LONG_LONG 1
# endif
#endif
-static void dopr (char *buffer, size_t maxlen, size_t *retlen,
- const char *format, va_list args);
-
-int BIO_printf (BIO *bio, ...)
- {
- va_list args;
- char *format;
- int ret;
- MS_STATIC char hugebuf[1024*2]; /* 10k in one chunk is the limit */
-
- va_start(args, bio);
- format=va_arg(args, char *);
-
- hugebuf[0]='\0';
- dopr(hugebuf, sizeof(hugebuf), &ret, format, args);
- ret=BIO_write(bio, hugebuf, ret);
-
- va_end(args);
- return(ret);
- }
-
/*
* Copyright Patrick Powell 1995
* This code is based on code written by Patrick Powell <papowell@astart.com>
* on all source code distributions.
*/
-/*
- * This code contains numerious changes and enhancements which were
- * made by lots of contributors over the last years to Patrick Powell's
- * original code:
- *
- * o Patrick Powell <papowell@astart.com> (1995)
- * o Brandon Long <blong@fiction.net> (1996, for Mutt)
- * o Thomas Roessler <roessler@guug.de> (1998, for Mutt)
- * o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt)
- * o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
- * o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
- * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
- */
-
-#if HAVE_LONG_DOUBLE
-#define LDOUBLE long double
+#ifdef HAVE_LONG_DOUBLE
+# define LDOUBLE long double
#else
-#define LDOUBLE double
+# define LDOUBLE double
#endif
-#if HAVE_LONG_LONG
-#define LLONG long long
+#ifdef HAVE_LONG_LONG
+# if defined(_WIN32) && !defined(__GNUC__)
+# define LLONG __int64
+# else
+# define LLONG long long
+# endif
#else
-#define LLONG long
+# define LLONG long
#endif
-static void fmtstr (char *, size_t *, size_t, char *, int, int, int);
-static void fmtint (char *, size_t *, size_t, LLONG, int, int, int, int);
-static void fmtfp (char *, size_t *, size_t, LDOUBLE, int, int, int);
-static void dopr_outch (char *, size_t *, size_t, int);
+static int fmtstr(char **, char **, size_t *, size_t *,
+ const char *, int, int, int);
+static int fmtint(char **, char **, size_t *, size_t *,
+ LLONG, int, int, int, int);
+static int fmtfp(char **, char **, size_t *, size_t *,
+ LDOUBLE, int, int, int, int);
+static int doapr_outch(char **, char **, size_t *, size_t *, int);
+static int _dopr(char **sbuffer, char **buffer,
+ size_t *maxlen, size_t *retlen, int *truncated,
+ const char *format, va_list args);
/* format read states */
#define DP_S_DEFAULT 0
#define DP_S_DONE 7
/* format flags - Bits */
+/* left-aligned padding */
#define DP_F_MINUS (1 << 0)
+/* print an explicit '+' for a value with positive sign */
#define DP_F_PLUS (1 << 1)
+/* print an explicit ' ' for a value with positive sign */
#define DP_F_SPACE (1 << 2)
+/* print 0/0x prefix for octal/hex and decimal point for floating point */
#define DP_F_NUM (1 << 3)
+/* print leading zeroes */
#define DP_F_ZERO (1 << 4)
+/* print HEX in UPPPERcase */
#define DP_F_UP (1 << 5)
+/* treat value as unsigned */
#define DP_F_UNSIGNED (1 << 6)
/* conversion flags */
#define DP_C_LDOUBLE 3
#define DP_C_LLONG 4
+/* Floating point formats */
+#define F_FORMAT 0
+#define E_FORMAT 1
+#define G_FORMAT 2
+
/* some handy macros */
#define char_to_int(p) (p - '0')
-#define MAX(p,q) ((p >= q) ? p : q)
-
-static void
-dopr(
- char *buffer,
- size_t maxlen,
- size_t *retlen,
- const char *format,
- va_list args)
+#define OSSL_MAX(p,q) ((p >= q) ? p : q)
+
+static int
+_dopr(char **sbuffer,
+ char **buffer,
+ size_t *maxlen,
+ size_t *retlen, int *truncated, const char *format, va_list args)
{
char ch;
LLONG value;
ch = *format++;
while (state != DP_S_DONE) {
- if ((ch == '\0') || (currlen >= maxlen))
+ if (ch == '\0' || (buffer == NULL && currlen >= *maxlen))
state = DP_S_DONE;
switch (state) {
if (ch == '%')
state = DP_S_FLAGS;
else
- dopr_outch(buffer, &currlen, maxlen, ch);
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch))
+ return 0;
ch = *format++;
break;
case DP_S_FLAGS:
case 'i':
switch (cflags) {
case DP_C_SHORT:
- value = va_arg(args, short int);
+ value = (short int)va_arg(args, int);
break;
case DP_C_LONG:
value = va_arg(args, long int);
value = va_arg(args, int);
break;
}
- fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags);
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, 10, min,
+ max, flags))
+ return 0;
break;
case 'X':
flags |= DP_F_UP;
flags |= DP_F_UNSIGNED;
switch (cflags) {
case DP_C_SHORT:
- value = va_arg(args,
- unsigned short int);
+ value = (unsigned short int)va_arg(args, unsigned int);
break;
case DP_C_LONG:
- value = (LLONG) va_arg(args,
- unsigned long int);
+ value = (LLONG) va_arg(args, unsigned long int);
break;
case DP_C_LLONG:
value = va_arg(args, unsigned LLONG);
break;
default:
- value = (LLONG) va_arg(args,
- unsigned int);
+ value = (LLONG) va_arg(args, unsigned int);
break;
}
- fmtint(buffer, &currlen, maxlen, value,
- ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
- min, max, flags);
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen, value,
+ ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
+ min, max, flags))
+ return 0;
break;
case 'f':
if (cflags == DP_C_LDOUBLE)
fvalue = va_arg(args, LDOUBLE);
else
fvalue = va_arg(args, double);
- fmtfp(buffer, &currlen, maxlen, fvalue, min, max, flags);
+ if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max,
+ flags, F_FORMAT))
+ return 0;
break;
case 'E':
flags |= DP_F_UP;
fvalue = va_arg(args, LDOUBLE);
else
fvalue = va_arg(args, double);
+ if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max,
+ flags, E_FORMAT))
+ return 0;
break;
case 'G':
flags |= DP_F_UP;
fvalue = va_arg(args, LDOUBLE);
else
fvalue = va_arg(args, double);
+ if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max,
+ flags, G_FORMAT))
+ return 0;
break;
case 'c':
- dopr_outch(buffer, &currlen, maxlen,
- va_arg(args, int));
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen,
+ va_arg(args, int)))
+ return 0;
break;
case 's':
strvalue = va_arg(args, char *);
- if (max < 0)
- max = maxlen;
- fmtstr(buffer, &currlen, maxlen, strvalue,
- flags, min, max);
+ if (max < 0) {
+ if (buffer)
+ max = INT_MAX;
+ else
+ max = *maxlen;
+ }
+ if (!fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
+ flags, min, max))
+ return 0;
break;
case 'p':
- value = (long)va_arg(args, void *);
- fmtint(buffer, &currlen, maxlen,
- value, 16, min, max, flags);
+ value = (size_t)va_arg(args, void *);
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen,
+ value, 16, min, max, flags | DP_F_NUM))
+ return 0;
break;
- case 'n': /* XXX */
+ case 'n': /* XXX */
if (cflags == DP_C_SHORT) {
short int *num;
num = va_arg(args, short int *);
} else if (cflags == DP_C_LONG) { /* XXX */
long int *num;
num = va_arg(args, long int *);
- *num = (long int) currlen;
+ *num = (long int)currlen;
} else if (cflags == DP_C_LLONG) { /* XXX */
LLONG *num;
num = va_arg(args, LLONG *);
*num = (LLONG) currlen;
} else {
- int *num;
+ int *num;
num = va_arg(args, int *);
*num = currlen;
}
break;
case '%':
- dopr_outch(buffer, &currlen, maxlen, ch);
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch))
+ return 0;
break;
case 'w':
/* not supported yet, treat as next char */
break;
}
}
- if (currlen >= maxlen - 1)
- currlen = maxlen - 1;
- buffer[currlen] = '\0';
- *retlen = currlen;
- return;
+ /*
+ * We have to truncate if there is no dynamic buffer and we have filled the
+ * static buffer.
+ */
+ if (buffer == NULL) {
+ *truncated = (currlen > *maxlen - 1);
+ if (*truncated)
+ currlen = *maxlen - 1;
+ }
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0'))
+ return 0;
+ *retlen = currlen - 1;
+ return 1;
}
-static void
-fmtstr(
- char *buffer,
- size_t *currlen,
- size_t maxlen,
- char *value,
- int flags,
- int min,
- int max)
+static int
+fmtstr(char **sbuffer,
+ char **buffer,
+ size_t *currlen,
+ size_t *maxlen, const char *value, int flags, int min, int max)
{
- int padlen, strln;
+ int padlen;
+ size_t strln;
int cnt = 0;
if (value == 0)
value = "<NULL>";
- for (strln = 0; value[strln]; ++strln)
- ;
+
+ strln = OPENSSL_strnlen(value, max < 0 ? SIZE_MAX : (size_t)max);
+
padlen = min - strln;
- if (padlen < 0)
+ if (min < 0 || padlen < 0)
padlen = 0;
+ if (max >= 0) {
+ /*
+ * Calculate the maximum output including padding.
+ * Make sure max doesn't overflow into negativity
+ */
+ if (max < INT_MAX - padlen)
+ max += padlen;
+ else
+ max = INT_MAX;
+ }
if (flags & DP_F_MINUS)
padlen = -padlen;
- while ((padlen > 0) && (cnt < max)) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ while ((padlen > 0) && (max < 0 || cnt < max)) {
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
--padlen;
++cnt;
}
- while (*value && (cnt < max)) {
- dopr_outch(buffer, currlen, maxlen, *value++);
+ while (strln > 0 && (max < 0 || cnt < max)) {
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *value++))
+ return 0;
+ --strln;
++cnt;
}
- while ((padlen < 0) && (cnt < max)) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ while ((padlen < 0) && (max < 0 || cnt < max)) {
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
++padlen;
++cnt;
}
+ return 1;
}
-static void
-fmtint(
- char *buffer,
- size_t *currlen,
- size_t maxlen,
- LLONG value,
- int base,
- int min,
- int max,
- int flags)
+static int
+fmtint(char **sbuffer,
+ char **buffer,
+ size_t *currlen,
+ size_t *maxlen, LLONG value, int base, int min, int max, int flags)
{
int signvalue = 0;
+ const char *prefix = "";
unsigned LLONG uvalue;
- char convert[20];
+ char convert[DECIMAL_SIZE(value) + 3];
int place = 0;
int spadlen = 0;
int zpadlen = 0;
if (!(flags & DP_F_UNSIGNED)) {
if (value < 0) {
signvalue = '-';
- uvalue = -value;
+ uvalue = -(unsigned LLONG)value;
} else if (flags & DP_F_PLUS)
signvalue = '+';
else if (flags & DP_F_SPACE)
signvalue = ' ';
}
+ if (flags & DP_F_NUM) {
+ if (base == 8)
+ prefix = "0";
+ if (base == 16)
+ prefix = "0x";
+ }
if (flags & DP_F_UP)
caps = 1;
do {
- convert[place++] =
- (caps ? "0123456789ABCDEF" : "0123456789abcdef")
- [uvalue % (unsigned) base];
- uvalue = (uvalue / (unsigned) base);
- } while (uvalue && (place < 20));
- if (place == 20)
+ convert[place++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")
+ [uvalue % (unsigned)base];
+ uvalue = (uvalue / (unsigned)base);
+ } while (uvalue && (place < (int)sizeof(convert)));
+ if (place == sizeof(convert))
place--;
convert[place] = 0;
zpadlen = max - place;
- spadlen = min - MAX(max, place) - (signvalue ? 1 : 0);
+ spadlen =
+ min - OSSL_MAX(max, place) - (signvalue ? 1 : 0) - strlen(prefix);
if (zpadlen < 0)
zpadlen = 0;
if (spadlen < 0)
spadlen = 0;
if (flags & DP_F_ZERO) {
- zpadlen = MAX(zpadlen, spadlen);
+ zpadlen = OSSL_MAX(zpadlen, spadlen);
spadlen = 0;
}
if (flags & DP_F_MINUS)
/* spaces */
while (spadlen > 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
--spadlen;
}
/* sign */
if (signvalue)
- dopr_outch(buffer, currlen, maxlen, signvalue);
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue))
+ return 0;
+
+ /* prefix */
+ while (*prefix) {
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix))
+ return 0;
+ prefix++;
+ }
/* zeros */
if (zpadlen > 0) {
while (zpadlen > 0) {
- dopr_outch(buffer, currlen, maxlen, '0');
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
+ return 0;
--zpadlen;
}
}
/* digits */
- while (place > 0)
- dopr_outch(buffer, currlen, maxlen, convert[--place]);
+ while (place > 0) {
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]))
+ return 0;
+ }
/* left justified spaces */
while (spadlen < 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
++spadlen;
}
- return;
+ return 1;
}
-static LDOUBLE
-abs_val(LDOUBLE value)
+static LDOUBLE abs_val(LDOUBLE value)
{
LDOUBLE result = value;
if (value < 0)
return result;
}
-static LDOUBLE
-pow10(int exp)
+static LDOUBLE pow_10(int in_exp)
{
LDOUBLE result = 1;
- while (exp) {
+ while (in_exp) {
result *= 10;
- exp--;
+ in_exp--;
}
return result;
}
-static long
-round(LDOUBLE value)
+static long roundv(LDOUBLE value)
{
long intpart;
- intpart = (long) value;
+ intpart = (long)value;
value = value - intpart;
if (value >= 0.5)
intpart++;
return intpart;
}
-static void
-fmtfp(
- char *buffer,
- size_t *currlen,
- size_t maxlen,
- LDOUBLE fvalue,
- int min,
- int max,
- int flags)
+static int
+fmtfp(char **sbuffer,
+ char **buffer,
+ size_t *currlen,
+ size_t *maxlen, LDOUBLE fvalue, int min, int max, int flags, int style)
{
int signvalue = 0;
LDOUBLE ufvalue;
+ LDOUBLE tmpvalue;
char iconvert[20];
char fconvert[20];
+ char econvert[20];
int iplace = 0;
int fplace = 0;
+ int eplace = 0;
int padlen = 0;
int zpadlen = 0;
- int caps = 0;
- long intpart;
- long fracpart;
+ long exp = 0;
+ unsigned long intpart;
+ unsigned long fracpart;
+ unsigned long max10;
+ int realstyle;
if (max < 0)
max = 6;
- ufvalue = abs_val(fvalue);
+
if (fvalue < 0)
signvalue = '-';
else if (flags & DP_F_PLUS)
else if (flags & DP_F_SPACE)
signvalue = ' ';
- intpart = (long)ufvalue;
+ /*
+ * G_FORMAT sometimes prints like E_FORMAT and sometimes like F_FORMAT
+ * depending on the number to be printed. Work out which one it is and use
+ * that from here on.
+ */
+ if (style == G_FORMAT) {
+ if (fvalue == 0.0) {
+ realstyle = F_FORMAT;
+ } else if (fvalue < 0.0001) {
+ realstyle = E_FORMAT;
+ } else if ((max == 0 && fvalue >= 10)
+ || (max > 0 && fvalue >= pow_10(max))) {
+ realstyle = E_FORMAT;
+ } else {
+ realstyle = F_FORMAT;
+ }
+ } else {
+ realstyle = style;
+ }
+
+ if (style != F_FORMAT) {
+ tmpvalue = fvalue;
+ /* Calculate the exponent */
+ if (fvalue != 0.0) {
+ while (tmpvalue < 1) {
+ tmpvalue *= 10;
+ exp--;
+ }
+ while (tmpvalue > 10) {
+ tmpvalue /= 10;
+ exp++;
+ }
+ }
+ if (style == G_FORMAT) {
+ /*
+ * In G_FORMAT the "precision" represents significant digits. We
+ * always have at least 1 significant digit.
+ */
+ if (max == 0)
+ max = 1;
+ /* Now convert significant digits to decimal places */
+ if (realstyle == F_FORMAT) {
+ max -= (exp + 1);
+ if (max < 0) {
+ /*
+ * Should not happen. If we're in F_FORMAT then exp < max?
+ */
+ return 0;
+ }
+ } else {
+ /*
+ * In E_FORMAT there is always one significant digit in front
+ * of the decimal point, so:
+ * significant digits == 1 + decimal places
+ */
+ max--;
+ }
+ }
+ if (realstyle == E_FORMAT)
+ fvalue = tmpvalue;
+ }
+ ufvalue = abs_val(fvalue);
+ if (ufvalue > ULONG_MAX) {
+ /* Number too big */
+ return 0;
+ }
+ intpart = (unsigned long)ufvalue;
- /* sorry, we only support 9 digits past the decimal because of our
- conversion method */
+ /*
+ * 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 */
- fracpart = round((pow10(max)) * (ufvalue - intpart));
+ /*
+ * 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 >= pow10(max)) {
+ if (fracpart >= max10) {
intpart++;
- fracpart -= (long)pow10(max);
+ fracpart -= max10;
}
/* convert integer part */
do {
- iconvert[iplace++] =
- (caps ? "0123456789ABCDEF"
- : "0123456789abcdef")[intpart % 10];
+ iconvert[iplace++] = "0123456789"[intpart % 10];
intpart = (intpart / 10);
- } while (intpart && (iplace < 20));
- if (iplace == 20)
+ } 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];
+ while (fplace < max) {
+ if (style == G_FORMAT && fplace == 0 && (fracpart % 10) == 0) {
+ /* We strip trailing zeros in G_FORMAT */
+ max--;
+ fracpart = fracpart / 10;
+ if (fplace < max)
+ continue;
+ break;
+ }
+ fconvert[fplace++] = "0123456789"[fracpart % 10];
fracpart = (fracpart / 10);
- } while (fracpart && (fplace < 20));
- if (fplace == 20)
+ }
+
+ 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);
+ /* convert exponent part */
+ if (realstyle == E_FORMAT) {
+ int tmpexp;
+ if (exp < 0)
+ tmpexp = -exp;
+ else
+ tmpexp = exp;
+
+ do {
+ econvert[eplace++] = "0123456789"[tmpexp % 10];
+ tmpexp = (tmpexp / 10);
+ } while (tmpexp > 0 && eplace < (int)sizeof(econvert));
+ /* Exponent is huge!! Too big to print */
+ if (tmpexp > 0)
+ return 0;
+ /* Add a leading 0 for single digit exponents */
+ if (eplace == 1)
+ econvert[eplace++] = '0';
+ }
+
+ /*
+ * -1 for decimal point (if we have one, i.e. max > 0),
+ * another -1 if we are printing a sign
+ */
+ padlen = min - iplace - max - (max > 0 ? 1 : 0) - ((signvalue) ? 1 : 0);
+ /* Take some off for exponent prefix "+e" and exponent */
+ if (realstyle == E_FORMAT)
+ padlen -= 2 + eplace;
zpadlen = max - fplace;
if (zpadlen < 0)
zpadlen = 0;
if ((flags & DP_F_ZERO) && (padlen > 0)) {
if (signvalue) {
- dopr_outch(buffer, currlen, maxlen, signvalue);
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue))
+ return 0;
--padlen;
signvalue = 0;
}
while (padlen > 0) {
- dopr_outch(buffer, currlen, maxlen, '0');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
+ return 0;
--padlen;
}
}
while (padlen > 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
--padlen;
}
- if (signvalue)
- dopr_outch(buffer, currlen, maxlen, signvalue);
+ if (signvalue && !doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue))
+ return 0;
- while (iplace > 0)
- dopr_outch(buffer, currlen, maxlen, iconvert[--iplace]);
+ 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) {
- dopr_outch(buffer, currlen, maxlen, '.');
-
- while (fplace > 0)
- dopr_outch(buffer, currlen, maxlen, fconvert[--fplace]);
+ 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) {
- dopr_outch(buffer, currlen, maxlen, '0');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
+ return 0;
--zpadlen;
}
+ if (realstyle == E_FORMAT) {
+ char ech;
+
+ if ((flags & DP_F_UP) == 0)
+ ech = 'e';
+ else
+ ech = 'E';
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ech))
+ return 0;
+ if (exp < 0) {
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '-'))
+ return 0;
+ } else {
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '+'))
+ return 0;
+ }
+ while (eplace > 0) {
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen,
+ econvert[--eplace]))
+ return 0;
+ }
+ }
while (padlen < 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ 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 */
+ OPENSSL_assert(*sbuffer != NULL || buffer != NULL);
+
+ /* |currlen| must always be <= |*maxlen| */
+ OPENSSL_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) {
+ OPENSSL_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;
+ 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);
+ }
+ 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);
}
-static void
-dopr_outch(
- char *buffer,
- size_t *currlen,
- size_t maxlen,
- int c)
+int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
{
- if (*currlen < maxlen)
- buffer[(*currlen)++] = (char)c;
- return;
+ 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;
}
projects / openssl.git / blobdiff