]>
git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/bio/b_print.c
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
)
602 ufvalue
= abs_val(fvalue
);
605 else if (flags
& DP_F_PLUS
)
607 else if (flags
& DP_F_SPACE
)
610 intpart
= (long)ufvalue
;
613 * sorry, we only support 9 digits past the decimal because of our
620 * we "cheat" by converting the fractional part to integer by multiplying
623 max10
= roundv(pow_10(max
));
624 fracpart
= roundv(pow_10(max
) * (ufvalue
- intpart
));
626 if (fracpart
>= max10
) {
631 /* convert integer part */
634 (caps
? "0123456789ABCDEF" : "0123456789abcdef")[intpart
% 10];
635 intpart
= (intpart
/ 10);
636 } while (intpart
&& (iplace
< (int)sizeof(iconvert
)));
637 if (iplace
== sizeof iconvert
)
639 iconvert
[iplace
] = 0;
641 /* convert fractional part */
644 (caps
? "0123456789ABCDEF" : "0123456789abcdef")[fracpart
% 10];
645 fracpart
= (fracpart
/ 10);
646 } while (fplace
< max
);
647 if (fplace
== sizeof fconvert
)
649 fconvert
[fplace
] = 0;
651 /* -1 for decimal point, another -1 if we are printing a sign */
652 padlen
= min
- iplace
- max
- 1 - ((signvalue
) ? 1 : 0);
653 zpadlen
= max
- fplace
;
658 if (flags
& DP_F_MINUS
)
661 if ((flags
& DP_F_ZERO
) && (padlen
> 0)) {
663 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, signvalue
);
668 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, '0');
673 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, ' ');
677 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, signvalue
);
680 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, iconvert
[--iplace
]);
683 * Decimal point. This should probably use locale to find the correct
686 if (max
> 0 || (flags
& DP_F_NUM
)) {
687 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, '.');
690 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, fconvert
[--fplace
]);
692 while (zpadlen
> 0) {
693 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, '0');
698 doapr_outch(sbuffer
, buffer
, currlen
, maxlen
, ' ');
704 doapr_outch(char **sbuffer
,
705 char **buffer
, size_t *currlen
, size_t *maxlen
, int c
)
707 /* If we haven't at least one buffer, someone has doe a big booboo */
708 assert(*sbuffer
!= NULL
|| buffer
!= NULL
);
711 while (*currlen
>= *maxlen
) {
712 if (*buffer
== NULL
) {
715 *buffer
= OPENSSL_malloc(*maxlen
);
717 assert(*sbuffer
!= NULL
);
718 memcpy(*buffer
, *sbuffer
, *currlen
);
723 *buffer
= OPENSSL_realloc(*buffer
, *maxlen
);
726 /* What to do if *buffer is NULL? */
727 assert(*sbuffer
!= NULL
|| *buffer
!= NULL
);
730 if (*currlen
< *maxlen
) {
732 (*sbuffer
)[(*currlen
)++] = (char)c
;
734 (*buffer
)[(*currlen
)++] = (char)c
;
740 /***************************************************************************/
742 int BIO_printf(BIO
*bio
, const char *format
, ...)
747 va_start(args
, format
);
749 ret
= BIO_vprintf(bio
, format
, args
);
755 int BIO_vprintf(BIO
*bio
, const char *format
, va_list args
)
759 char hugebuf
[1024 * 2]; /* Was previously 10k, which is unreasonable
760 * in small-stack environments, like threads
761 * or DOS programs. */
762 char *hugebufp
= hugebuf
;
763 size_t hugebufsize
= sizeof(hugebuf
);
768 CRYPTO_push_info("doapr()");
769 _dopr(&hugebufp
, &dynbuf
, &hugebufsize
, &retlen
, &ignored
, format
, args
);
771 ret
= BIO_write(bio
, dynbuf
, (int)retlen
);
772 OPENSSL_free(dynbuf
);
774 ret
= BIO_write(bio
, hugebuf
, (int)retlen
);
781 * As snprintf is not available everywhere, we provide our own
782 * implementation. This function has nothing to do with BIOs, but it's
783 * closely related to BIO_printf, and we need *some* name prefix ... (XXX the
784 * function should be renamed, but to what?)
786 int BIO_snprintf(char *buf
, size_t n
, const char *format
, ...)
791 va_start(args
, format
);
793 ret
= BIO_vsnprintf(buf
, n
, format
, args
);
799 int BIO_vsnprintf(char *buf
, size_t n
, const char *format
, va_list args
)
804 _dopr(&buf
, NULL
, &n
, &retlen
, &truncated
, format
, args
);
808 * In case of truncation, return -1 like traditional snprintf.
809 * (Current drafts for ISO/IEC 9899 say snprintf should return the
810 * number of characters that would have been written, had the buffer
811 * been large enough.)
815 return (retlen
<= INT_MAX
) ? (int)retlen
: -1;