1 /* crypto/bio/b_print.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
59 /* disable assert() unless BIO_DEBUG has been defined */
67 * Stolen from tjh's ssl/ssl_trc.c stuff.
76 #ifndef NO_SYS_TYPES_H
77 #include <sys/types.h>
79 #include <openssl/bn.h> /* To get BN_LLONG properly defined */
80 #include <openssl/bio.h>
83 # ifndef HAVE_LONG_LONG
84 # define HAVE_LONG_LONG 1
88 /***************************************************************************/
91 * Copyright Patrick Powell 1995
92 * This code is based on code written by Patrick Powell <papowell@astart.com>
93 * It may be used for any purpose as long as this notice remains intact
94 * on all source code distributions.
98 * This code contains numerious changes and enhancements which were
99 * made by lots of contributors over the last years to Patrick Powell's
102 * o Patrick Powell <papowell@astart.com> (1995)
103 * o Brandon Long <blong@fiction.net> (1996, for Mutt)
104 * o Thomas Roessler <roessler@guug.de> (1998, for Mutt)
105 * o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt)
106 * o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
107 * o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
108 * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
109 * o ... (for OpenSSL)
113 #define LDOUBLE long double
115 #define LDOUBLE double
119 # if defined(OPENSSL_SYS_WIN32) && !defined(__GNUC__)
120 # define LLONG _int64
122 # define LLONG long long
128 static void fmtstr (char **, char **, size_t *, size_t *,
129 const char *, int, int, int);
130 static void fmtint (char **, char **, size_t *, size_t *,
131 LLONG, int, int, int, int);
132 static void fmtfp (char **, char **, size_t *, size_t *,
133 LDOUBLE, int, int, int);
134 static void doapr_outch (char **, char **, size_t *, size_t *, int);
135 static void _dopr(char **sbuffer, char **buffer,
136 size_t *maxlen, size_t *retlen, int *truncated,
137 const char *format, va_list args);
139 /* format read states */
140 #define DP_S_DEFAULT 0
149 /* format flags - Bits */
150 #define DP_F_MINUS (1 << 0)
151 #define DP_F_PLUS (1 << 1)
152 #define DP_F_SPACE (1 << 2)
153 #define DP_F_NUM (1 << 3)
154 #define DP_F_ZERO (1 << 4)
155 #define DP_F_UP (1 << 5)
156 #define DP_F_UNSIGNED (1 << 6)
158 /* conversion flags */
161 #define DP_C_LDOUBLE 3
164 /* some handy macros */
165 #define char_to_int(p) (p - '0')
166 #define OSSL_MAX(p,q) ((p >= q) ? p : q)
189 state = DP_S_DEFAULT;
190 flags = currlen = cflags = min = 0;
194 while (state != DP_S_DONE) {
195 if (ch == '\0' || (buffer == NULL && currlen >= *maxlen))
203 doapr_outch(sbuffer,buffer, &currlen, maxlen, ch);
234 if (isdigit((unsigned char)ch)) {
235 min = 10 * min + char_to_int(ch);
237 } else if (ch == '*') {
238 min = va_arg(args, int);
252 if (isdigit((unsigned char)ch)) {
255 max = 10 * max + char_to_int(ch);
257 } else if (ch == '*') {
258 max = va_arg(args, int);
271 if (*format == 'l') {
283 cflags = DP_C_LDOUBLE;
297 value = (short int)va_arg(args, int);
300 value = va_arg(args, long int);
303 value = va_arg(args, LLONG);
306 value = va_arg(args, int);
309 fmtint(sbuffer, buffer, &currlen, maxlen,
310 value, 10, min, max, flags);
318 flags |= DP_F_UNSIGNED;
321 value = (unsigned short int)va_arg(args, unsigned int);
324 value = (LLONG) va_arg(args,
328 value = va_arg(args, unsigned LLONG);
331 value = (LLONG) va_arg(args,
335 fmtint(sbuffer, buffer, &currlen, maxlen, value,
336 ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
340 if (cflags == DP_C_LDOUBLE)
341 fvalue = va_arg(args, LDOUBLE);
343 fvalue = va_arg(args, double);
344 fmtfp(sbuffer, buffer, &currlen, maxlen,
345 fvalue, min, max, flags);
350 if (cflags == DP_C_LDOUBLE)
351 fvalue = va_arg(args, LDOUBLE);
353 fvalue = va_arg(args, double);
358 if (cflags == DP_C_LDOUBLE)
359 fvalue = va_arg(args, LDOUBLE);
361 fvalue = va_arg(args, double);
364 doapr_outch(sbuffer, buffer, &currlen, maxlen,
368 strvalue = va_arg(args, char *);
375 fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
379 value = (long)va_arg(args, void *);
380 fmtint(sbuffer, buffer, &currlen, maxlen,
381 value, 16, min, max, flags);
384 if (cflags == DP_C_SHORT) {
386 num = va_arg(args, short int *);
388 } else if (cflags == DP_C_LONG) { /* XXX */
390 num = va_arg(args, long int *);
391 *num = (long int) currlen;
392 } else if (cflags == DP_C_LLONG) { /* XXX */
394 num = va_arg(args, LLONG *);
395 *num = (LLONG) currlen;
398 num = va_arg(args, int *);
403 doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
406 /* not supported yet, treat as next char */
414 state = DP_S_DEFAULT;
415 flags = cflags = min = 0;
424 *truncated = (currlen > *maxlen - 1);
426 currlen = *maxlen - 1;
427 doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0');
428 *retlen = currlen - 1;
448 for (strln = 0; value[strln]; ++strln)
450 padlen = min - strln;
453 if (flags & DP_F_MINUS)
456 while ((padlen > 0) && (cnt < max)) {
457 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
461 while (*value && (cnt < max)) {
462 doapr_outch(sbuffer, buffer, currlen, maxlen, *value++);
465 while ((padlen < 0) && (cnt < max)) {
466 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
485 unsigned LLONG uvalue;
495 if (!(flags & DP_F_UNSIGNED)) {
499 } else if (flags & DP_F_PLUS)
501 else if (flags & DP_F_SPACE)
508 (caps ? "0123456789ABCDEF" : "0123456789abcdef")
509 [uvalue % (unsigned) base];
510 uvalue = (uvalue / (unsigned) base);
511 } while (uvalue && (place < 20));
516 zpadlen = max - place;
517 spadlen = min - OSSL_MAX(max, place) - (signvalue ? 1 : 0);
522 if (flags & DP_F_ZERO) {
523 zpadlen = OSSL_MAX(zpadlen, spadlen);
526 if (flags & DP_F_MINUS)
530 while (spadlen > 0) {
531 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
537 doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
541 while (zpadlen > 0) {
542 doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
548 doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]);
550 /* left justified spaces */
551 while (spadlen < 0) {
552 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
559 abs_val(LDOUBLE value)
561 LDOUBLE result = value;
579 roundv(LDOUBLE value)
582 intpart = (long) value;
583 value = value - intpart;
614 ufvalue = abs_val(fvalue);
617 else if (flags & DP_F_PLUS)
619 else if (flags & DP_F_SPACE)
622 intpart = (long)ufvalue;
624 /* sorry, we only support 9 digits past the decimal because of our
629 /* we "cheat" by converting the fractional part to integer by
630 multiplying by a factor of 10 */
631 fracpart = roundv((pow10(max)) * (ufvalue - intpart));
633 if (fracpart >= pow10(max)) {
635 fracpart -= (long)pow10(max);
638 /* convert integer part */
641 (caps ? "0123456789ABCDEF"
642 : "0123456789abcdef")[intpart % 10];
643 intpart = (intpart / 10);
644 } while (intpart && (iplace < 20));
647 iconvert[iplace] = 0;
649 /* convert fractional part */
652 (caps ? "0123456789ABCDEF"
653 : "0123456789abcdef")[fracpart % 10];
654 fracpart = (fracpart / 10);
655 } while (fplace < max);
658 fconvert[fplace] = 0;
660 /* -1 for decimal point, another -1 if we are printing a sign */
661 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
662 zpadlen = max - fplace;
667 if (flags & DP_F_MINUS)
670 if ((flags & DP_F_ZERO) && (padlen > 0)) {
672 doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
677 doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
682 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
686 doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
689 doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]);
692 * Decimal point. This should probably use locale to find the correct
696 doapr_outch(sbuffer, buffer, currlen, maxlen, '.');
699 doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]);
701 while (zpadlen > 0) {
702 doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
707 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
720 /* If we haven't at least one buffer, someone has doe a big booboo */
721 assert(*sbuffer != NULL || buffer != NULL);
724 while (*currlen >= *maxlen) {
725 if (*buffer == NULL) {
728 *buffer = OPENSSL_malloc(*maxlen);
730 assert(*sbuffer != NULL);
731 memcpy(*buffer, *sbuffer, *currlen);
736 *buffer = OPENSSL_realloc(*buffer, *maxlen);
739 /* What to do if *buffer is NULL? */
740 assert(*sbuffer != NULL || *buffer != NULL);
743 if (*currlen < *maxlen) {
745 (*sbuffer)[(*currlen)++] = (char)c;
747 (*buffer)[(*currlen)++] = (char)c;
753 /***************************************************************************/
755 int BIO_printf (BIO *bio, const char *format, ...)
760 va_start(args, format);
762 ret = BIO_vprintf(bio, format, args);
768 int BIO_vprintf (BIO *bio, const char *format, va_list args)
772 char hugebuf[1024*2]; /* Was previously 10k, which is unreasonable
773 in small-stack environments, like threads
775 char *hugebufp = hugebuf;
776 size_t hugebufsize = sizeof(hugebuf);
781 CRYPTO_push_info("doapr()");
782 _dopr(&hugebufp, &dynbuf, &hugebufsize,
783 &retlen, &ignored, format, args);
786 ret=BIO_write(bio, dynbuf, (int)retlen);
787 OPENSSL_free(dynbuf);
791 ret=BIO_write(bio, hugebuf, (int)retlen);
797 /* As snprintf is not available everywhere, we provide our own implementation.
798 * This function has nothing to do with BIOs, but it's closely related
799 * to BIO_printf, and we need *some* name prefix ...
800 * (XXX the function should be renamed, but to what?) */
801 int BIO_snprintf(char *buf, size_t n, const char *format, ...)
806 va_start(args, format);
808 ret = BIO_vsnprintf(buf, n, format, args);
814 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
819 _dopr(&buf, NULL, &n, &retlen, &truncated, format, args);
822 /* In case of truncation, return -1 like traditional snprintf.
823 * (Current drafts for ISO/IEC 9899 say snprintf should return
824 * the number of characters that would have been written,
825 * had the buffer been large enough.) */
828 return (retlen <= INT_MAX) ? retlen : -1;