+++ /dev/null
-/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
- *
- * 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 <string.h>
-#include "internal/cryptlib.h"
-#include "internal/ctype.h"
-#include "internal/numbers.h"
-#include <openssl/bio.h>
-
-/*
- * Copyright Patrick Powell 1995
- * This code is based on code written by Patrick Powell <papowell@astart.com>
- * It may be used for any purpose as long as this notice remains intact
- * on all source code distributions.
- */
-
-#ifdef HAVE_LONG_DOUBLE
-# define LDOUBLE long double
-#else
-# define LDOUBLE double
-#endif
-
-static int fmtstr(char **, char **, size_t *, size_t *,
- const char *, int, int, int);
-static int fmtint(char **, char **, size_t *, size_t *,
- int64_t, 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_FLAGS 1
-#define DP_S_MIN 2
-#define DP_S_DOT 3
-#define DP_S_MAX 4
-#define DP_S_MOD 5
-#define DP_S_CONV 6
-#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_SHORT 1
-#define DP_C_LONG 2
-#define DP_C_LDOUBLE 3
-#define DP_C_LLONG 4
-#define DP_C_SIZE 5
-
-/* 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 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;
- int64_t value;
- LDOUBLE fvalue;
- char *strvalue;
- int min;
- int max;
- int state;
- int flags;
- int cflags;
- size_t currlen;
-
- state = DP_S_DEFAULT;
- flags = currlen = cflags = min = 0;
- max = -1;
- ch = *format++;
-
- while (state != DP_S_DONE) {
- if (ch == '\0' || (buffer == NULL && currlen >= *maxlen))
- state = DP_S_DONE;
-
- switch (state) {
- case DP_S_DEFAULT:
- if (ch == '%')
- state = DP_S_FLAGS;
- else
- if (!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch))
- return 0;
- ch = *format++;
- break;
- case DP_S_FLAGS:
- switch (ch) {
- case '-':
- flags |= DP_F_MINUS;
- ch = *format++;
- break;
- case '+':
- flags |= DP_F_PLUS;
- ch = *format++;
- break;
- case ' ':
- flags |= DP_F_SPACE;
- ch = *format++;
- break;
- case '#':
- flags |= DP_F_NUM;
- ch = *format++;
- break;
- case '0':
- flags |= DP_F_ZERO;
- ch = *format++;
- break;
- default:
- state = DP_S_MIN;
- break;
- }
- break;
- case DP_S_MIN:
- if (ossl_isdigit(ch)) {
- min = 10 * min + char_to_int(ch);
- ch = *format++;
- } else if (ch == '*') {
- min = va_arg(args, int);
- ch = *format++;
- state = DP_S_DOT;
- } else
- state = DP_S_DOT;
- break;
- case DP_S_DOT:
- if (ch == '.') {
- state = DP_S_MAX;
- ch = *format++;
- } else
- state = DP_S_MOD;
- break;
- case DP_S_MAX:
- if (ossl_isdigit(ch)) {
- if (max < 0)
- max = 0;
- max = 10 * max + char_to_int(ch);
- ch = *format++;
- } else if (ch == '*') {
- max = va_arg(args, int);
- ch = *format++;
- state = DP_S_MOD;
- } else
- state = DP_S_MOD;
- break;
- case DP_S_MOD:
- switch (ch) {
- case 'h':
- cflags = DP_C_SHORT;
- ch = *format++;
- break;
- case 'l':
- if (*format == 'l') {
- cflags = DP_C_LLONG;
- format++;
- } else
- cflags = DP_C_LONG;
- ch = *format++;
- break;
- case 'q':
- case 'j':
- cflags = DP_C_LLONG;
- ch = *format++;
- break;
- case 'L':
- cflags = DP_C_LDOUBLE;
- ch = *format++;
- break;
- case 'z':
- cflags = DP_C_SIZE;
- ch = *format++;
- break;
- default:
- break;
- }
- state = DP_S_CONV;
- break;
- case DP_S_CONV:
- switch (ch) {
- case 'd':
- case 'i':
- switch (cflags) {
- case DP_C_SHORT:
- value = (short int)va_arg(args, int);
- break;
- case DP_C_LONG:
- value = va_arg(args, long int);
- break;
- case DP_C_LLONG:
- value = va_arg(args, int64_t);
- break;
- case DP_C_SIZE:
- value = va_arg(args, ossl_ssize_t);
- break;
- default:
- value = va_arg(args, int);
- break;
- }
- if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, 10, min,
- max, flags))
- return 0;
- break;
- case 'X':
- flags |= DP_F_UP;
- /* FALLTHROUGH */
- case 'x':
- case 'o':
- case 'u':
- flags |= DP_F_UNSIGNED;
- switch (cflags) {
- case DP_C_SHORT:
- value = (unsigned short int)va_arg(args, unsigned int);
- break;
- case DP_C_LONG:
- value = va_arg(args, unsigned long int);
- break;
- case DP_C_LLONG:
- value = va_arg(args, uint64_t);
- break;
- case DP_C_SIZE:
- value = va_arg(args, size_t);
- break;
- default:
- value = va_arg(args, unsigned int);
- break;
- }
- 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);
- if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max,
- flags, F_FORMAT))
- return 0;
- break;
- case 'E':
- flags |= DP_F_UP;
- /* fall thru */
- case 'e':
- if (cflags == DP_C_LDOUBLE)
- 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;
- /* fall thru */
- case 'g':
- if (cflags == DP_C_LDOUBLE)
- 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':
- if (!doapr_outch(sbuffer, buffer, &currlen, maxlen,
- va_arg(args, int)))
- return 0;
- break;
- case 's':
- strvalue = va_arg(args, char *);
- 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 = (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':
- {
- int *num;
- num = va_arg(args, int *);
- *num = currlen;
- }
- break;
- case '%':
- if (!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch))
- return 0;
- break;
- case 'w':
- /* not supported yet, treat as next char */
- ch = *format++;
- break;
- default:
- /* unknown, skip */
- break;
- }
- ch = *format++;
- state = DP_S_DEFAULT;
- flags = cflags = min = 0;
- max = -1;
- break;
- case DP_S_DONE:
- break;
- default:
- break;
- }
- }
- /*
- * 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 int
-fmtstr(char **sbuffer,
- char **buffer,
- size_t *currlen,
- size_t *maxlen, const char *value, int flags, int min, int max)
-{
- int padlen;
- size_t strln;
- int cnt = 0;
-
- if (value == 0)
- value = "<NULL>";
-
- strln = OPENSSL_strnlen(value, max < 0 ? SIZE_MAX : (size_t)max);
-
- padlen = min - strln;
- 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) && (max < 0 || cnt < max)) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
- return 0;
- --padlen;
- ++cnt;
- }
- while (strln > 0 && (max < 0 || cnt < max)) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, *value++))
- return 0;
- --strln;
- ++cnt;
- }
- while ((padlen < 0) && (max < 0 || cnt < max)) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
- return 0;
- ++padlen;
- ++cnt;
- }
- return 1;
-}
-
-static int
-fmtint(char **sbuffer,
- char **buffer,
- size_t *currlen,
- size_t *maxlen, int64_t value, int base, int min, int max, int flags)
-{
- int signvalue = 0;
- const char *prefix = "";
- uint64_t uvalue;
- char convert[DECIMAL_SIZE(value) + 3];
- int place = 0;
- int spadlen = 0;
- int zpadlen = 0;
- int caps = 0;
-
- if (max < 0)
- max = 0;
- uvalue = value;
- if (!(flags & DP_F_UNSIGNED)) {
- if (value < 0) {
- signvalue = '-';
- uvalue = 0 - (uint64_t)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 < (int)sizeof(convert)));
- if (place == sizeof(convert))
- place--;
- convert[place] = 0;
-
- zpadlen = max - place;
- 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 = OSSL_MAX(zpadlen, spadlen);
- spadlen = 0;
- }
- if (flags & DP_F_MINUS)
- spadlen = -spadlen;
-
- /* spaces */
- while (spadlen > 0) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
- return 0;
- --spadlen;
- }
-
- /* sign */
- if (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) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
- return 0;
- --zpadlen;
- }
- }
- /* digits */
- while (place > 0) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]))
- return 0;
- }
-
- /* left justified spaces */
- while (spadlen < 0) {
- if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
- return 0;
- ++spadlen;
- }
- return 1;
-}
-
-static LDOUBLE abs_val(LDOUBLE value)
-{
- LDOUBLE result = value;
- if (value < 0)
- result = -value;
- return result;
-}
-
-static LDOUBLE pow_10(int in_exp)
-{
- LDOUBLE result = 1;
- while (in_exp) {
- result *= 10;
- in_exp--;
- }
- return result;
-}
-
-static long roundv(LDOUBLE value)
-{
- long intpart;
- intpart = (long)value;
- value = value - intpart;
- if (value >= 0.5)
- intpart++;
- return intpart;
-}
-
-static 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;
- long exp = 0;
- unsigned long intpart;
- unsigned long fracpart;
- unsigned long max10;
- int realstyle;
-
- if (max < 0)
- max = 6;
-
- if (fvalue < 0)
- signvalue = '-';
- else if (flags & DP_F_PLUS)
- signvalue = '+';
- else if (flags & DP_F_SPACE)
- signvalue = ' ';
-
- /*
- * 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
- */
- 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 */
- 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);
- }
-
- if (fplace == sizeof(fconvert))
- fplace--;
- fconvert[fplace] = 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 (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;
- }
- 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) {
- 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 done a big booboo */
- if (!ossl_assert(*sbuffer != NULL || buffer != NULL))
- return 0;
-
- /* |currlen| must always be <= |*maxlen| */
- if (!ossl_assert(*currlen <= *maxlen))
- return 0;
-
- if (buffer && *currlen == *maxlen) {
- if (*maxlen > INT_MAX - BUFFER_INC)
- return 0;
-
- *maxlen += BUFFER_INC;
- if (*buffer == NULL) {
- if ((*buffer = OPENSSL_malloc(*maxlen)) == NULL) {
- BIOerr(BIO_F_DOAPR_OUTCH, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- if (*currlen > 0) {
- if (!ossl_assert(*sbuffer != NULL))
- return 0;
- 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;
-}
-
-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;
-}
projects / openssl.git / blobdiff