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>
82 #if defined(BN_LLONG) || defined(SIXTY_FOUR_BIT)
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)
112 #ifdef HAVE_LONG_DOUBLE
113 # define LDOUBLE long double
115 # define LDOUBLE double
118 #ifdef HAVE_LONG_LONG
119 # if defined(_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)
169 _dopr(char **sbuffer,
172 size_t *retlen, int *truncated, const char *format, va_list args)
185 state = DP_S_DEFAULT;
186 flags = currlen = cflags = min = 0;
190 while (state != DP_S_DONE) {
191 if (ch == '\0' || (buffer == NULL && currlen >= *maxlen))
199 doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
230 if (isdigit((unsigned char)ch)) {
231 min = 10 * min + char_to_int(ch);
233 } else if (ch == '*') {
234 min = va_arg(args, int);
248 if (isdigit((unsigned char)ch)) {
251 max = 10 * max + char_to_int(ch);
253 } else if (ch == '*') {
254 max = va_arg(args, int);
267 if (*format == 'l') {
279 cflags = DP_C_LDOUBLE;
293 value = (short int)va_arg(args, int);
296 value = va_arg(args, long int);
299 value = va_arg(args, LLONG);
302 value = va_arg(args, int);
305 fmtint(sbuffer, buffer, &currlen, maxlen,
306 value, 10, min, max, flags);
314 flags |= DP_F_UNSIGNED;
317 value = (unsigned short int)va_arg(args, unsigned int);
320 value = (LLONG) va_arg(args, unsigned long int);
323 value = va_arg(args, unsigned LLONG);
326 value = (LLONG) va_arg(args, unsigned int);
329 fmtint(sbuffer, buffer, &currlen, maxlen, value,
330 ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
334 if (cflags == DP_C_LDOUBLE)
335 fvalue = va_arg(args, LDOUBLE);
337 fvalue = va_arg(args, double);
338 fmtfp(sbuffer, buffer, &currlen, maxlen,
339 fvalue, min, max, flags);
344 if (cflags == DP_C_LDOUBLE)
345 fvalue = va_arg(args, LDOUBLE);
347 fvalue = va_arg(args, double);
352 if (cflags == DP_C_LDOUBLE)
353 fvalue = va_arg(args, LDOUBLE);
355 fvalue = va_arg(args, double);
358 doapr_outch(sbuffer, buffer, &currlen, maxlen,
362 strvalue = va_arg(args, char *);
369 fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
373 value = (long)va_arg(args, void *);
374 fmtint(sbuffer, buffer, &currlen, maxlen,
375 value, 16, min, max, flags | DP_F_NUM);
378 if (cflags == DP_C_SHORT) {
380 num = va_arg(args, short int *);
382 } else if (cflags == DP_C_LONG) { /* XXX */
384 num = va_arg(args, long int *);
385 *num = (long int)currlen;
386 } else if (cflags == DP_C_LLONG) { /* XXX */
388 num = va_arg(args, LLONG *);
389 *num = (LLONG) currlen;
392 num = va_arg(args, int *);
397 doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
400 /* not supported yet, treat as next char */
408 state = DP_S_DEFAULT;
409 flags = cflags = min = 0;
418 *truncated = (currlen > *maxlen - 1);
420 currlen = *maxlen - 1;
421 doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0');
422 *retlen = currlen - 1;
427 fmtstr(char **sbuffer,
430 size_t *maxlen, const char *value, int flags, int min, int max)
437 for (strln = 0; value[strln]; ++strln) ;
438 padlen = min - strln;
441 if (flags & DP_F_MINUS)
444 while ((padlen > 0) && (cnt < max)) {
445 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
449 while (*value && (cnt < max)) {
450 doapr_outch(sbuffer, buffer, currlen, maxlen, *value++);
453 while ((padlen < 0) && (cnt < max)) {
454 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
461 fmtint(char **sbuffer,
464 size_t *maxlen, LLONG value, int base, int min, int max, int flags)
467 const char *prefix = "";
468 unsigned LLONG uvalue;
469 char convert[DECIMAL_SIZE(value) + 3];
478 if (!(flags & DP_F_UNSIGNED)) {
482 } else if (flags & DP_F_PLUS)
484 else if (flags & DP_F_SPACE)
487 if (flags & DP_F_NUM) {
496 convert[place++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")
497 [uvalue % (unsigned)base];
498 uvalue = (uvalue / (unsigned)base);
499 } while (uvalue && (place < (int)sizeof(convert)));
500 if (place == sizeof(convert))
504 zpadlen = max - place;
506 min - OSSL_MAX(max, place) - (signvalue ? 1 : 0) - strlen(prefix);
511 if (flags & DP_F_ZERO) {
512 zpadlen = OSSL_MAX(zpadlen, spadlen);
515 if (flags & DP_F_MINUS)
519 while (spadlen > 0) {
520 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
526 doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
530 doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix);
536 while (zpadlen > 0) {
537 doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
543 doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]);
545 /* left justified spaces */
546 while (spadlen < 0) {
547 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
553 static LDOUBLE abs_val(LDOUBLE value)
555 LDOUBLE result = value;
561 static LDOUBLE pow_10(int in_exp)
571 static long roundv(LDOUBLE value)
574 intpart = (long)value;
575 value = value - intpart;
582 fmtfp(char **sbuffer,
585 size_t *maxlen, LDOUBLE fvalue, int min, int max, int flags)
601 ufvalue = abs_val(fvalue);
604 else if (flags & DP_F_PLUS)
606 else if (flags & DP_F_SPACE)
609 intpart = (long)ufvalue;
612 * sorry, we only support 9 digits past the decimal because of our
619 * we "cheat" by converting the fractional part to integer by multiplying
622 max10 = roundv(pow_10(max));
623 fracpart = roundv(pow_10(max) * (ufvalue - intpart));
625 if (fracpart >= max10) {
630 /* convert integer part */
632 iconvert[iplace++] = "0123456789"[intpart % 10];
633 intpart = (intpart / 10);
634 } while (intpart && (iplace < (int)sizeof(iconvert)));
635 if (iplace == sizeof iconvert)
637 iconvert[iplace] = 0;
639 /* convert fractional part */
641 fconvert[fplace++] = "0123456789"[fracpart % 10];
642 fracpart = (fracpart / 10);
643 } while (fplace < max);
644 if (fplace == sizeof fconvert)
646 fconvert[fplace] = 0;
648 /* -1 for decimal point, another -1 if we are printing a sign */
649 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
650 zpadlen = max - fplace;
655 if (flags & DP_F_MINUS)
658 if ((flags & DP_F_ZERO) && (padlen > 0)) {
660 doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
665 doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
670 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
674 doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
677 doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]);
680 * Decimal point. This should probably use locale to find the correct
683 if (max > 0 || (flags & DP_F_NUM)) {
684 doapr_outch(sbuffer, buffer, currlen, maxlen, '.');
687 doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]);
689 while (zpadlen > 0) {
690 doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
695 doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
701 doapr_outch(char **sbuffer,
702 char **buffer, size_t *currlen, size_t *maxlen, int c)
704 /* If we haven't at least one buffer, someone has doe a big booboo */
705 assert(*sbuffer != NULL || buffer != NULL);
708 while (*currlen >= *maxlen) {
709 if (*buffer == NULL) {
712 *buffer = OPENSSL_malloc(*maxlen);
714 /* Panic! Can't really do anything sensible. Just return */
718 assert(*sbuffer != NULL);
719 memcpy(*buffer, *sbuffer, *currlen);
724 *buffer = OPENSSL_realloc(*buffer, *maxlen);
726 /* Panic! Can't really do anything sensible. Just return */
731 /* What to do if *buffer is NULL? */
732 assert(*sbuffer != NULL || *buffer != NULL);
735 if (*currlen < *maxlen) {
737 (*sbuffer)[(*currlen)++] = (char)c;
739 (*buffer)[(*currlen)++] = (char)c;
745 /***************************************************************************/
747 int BIO_printf(BIO *bio, const char *format, ...)
752 va_start(args, format);
754 ret = BIO_vprintf(bio, format, args);
760 int BIO_vprintf(BIO *bio, const char *format, va_list args)
764 char hugebuf[1024 * 2]; /* Was previously 10k, which is unreasonable
765 * in small-stack environments, like threads
766 * or DOS programs. */
767 char *hugebufp = hugebuf;
768 size_t hugebufsize = sizeof(hugebuf);
773 CRYPTO_push_info("doapr()");
774 _dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format, args);
776 ret = BIO_write(bio, dynbuf, (int)retlen);
777 OPENSSL_free(dynbuf);
779 ret = BIO_write(bio, hugebuf, (int)retlen);
786 * As snprintf is not available everywhere, we provide our own
787 * implementation. This function has nothing to do with BIOs, but it's
788 * closely related to BIO_printf, and we need *some* name prefix ... (XXX the
789 * function should be renamed, but to what?)
791 int BIO_snprintf(char *buf, size_t n, const char *format, ...)
796 va_start(args, format);
798 ret = BIO_vsnprintf(buf, n, format, args);
804 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
809 _dopr(&buf, NULL, &n, &retlen, &truncated, format, args);
813 * In case of truncation, return -1 like traditional snprintf.
814 * (Current drafts for ISO/IEC 9899 say snprintf should return the
815 * number of characters that would have been written, had the buffer
816 * been large enough.)
820 return (retlen <= INT_MAX) ? (int)retlen : -1;