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.]
60 * Stolen from tjh's ssl/ssl_trc.c stuff.
70 #ifndef NO_SYS_TYPES_H
71 #include <sys/types.h>
73 #include <openssl/bio.h>
76 # ifndef HAVE_LONG_LONG
77 # define HAVE_LONG_LONG 1
81 /***************************************************************************/
84 * Copyright Patrick Powell 1995
85 * This code is based on code written by Patrick Powell <papowell@astart.com>
86 * It may be used for any purpose as long as this notice remains intact
87 * on all source code distributions.
91 * This code contains numerious changes and enhancements which were
92 * made by lots of contributors over the last years to Patrick Powell's
95 * o Patrick Powell <papowell@astart.com> (1995)
96 * o Brandon Long <blong@fiction.net> (1996, for Mutt)
97 * o Thomas Roessler <roessler@guug.de> (1998, for Mutt)
98 * o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt)
99 * o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
100 * o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
101 * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
102 * o ... (for OpenSSL)
106 #define LDOUBLE long double
108 #define LDOUBLE double
112 #define LLONG long long
117 static void fmtstr (void (*)(char **, size_t *, size_t *, int),
118 char **, size_t *, size_t *, const char *, int, int,
120 static void fmtint (void (*)(char **, size_t *, size_t *, int),
121 char **, size_t *, size_t *, LLONG, int, int, int, int);
122 static void fmtfp (void (*)(char **, size_t *, size_t *, int),
123 char **, size_t *, size_t *, LDOUBLE, int, int, int);
124 static int dopr_isbig (size_t, size_t);
125 static int dopr_copy (size_t);
126 static void dopr_outch (char **, size_t *, size_t *, int);
127 #ifdef USE_ALLOCATING_PRINT
128 static int doapr_isbig (size_t, size_t);
129 static int doapr_copy (size_t);
130 static void doapr_outch (char **, size_t *, size_t *, int);
132 static void _dopr(void (*)(char **, size_t *, size_t *, int),
133 int (*)(size_t, size_t), int (*)(size_t),
134 char **buffer, size_t *maxlen, size_t *retlen, int *truncated,
135 const char *format, va_list args);
137 /* format read states */
138 #define DP_S_DEFAULT 0
147 /* format flags - Bits */
148 #define DP_F_MINUS (1 << 0)
149 #define DP_F_PLUS (1 << 1)
150 #define DP_F_SPACE (1 << 2)
151 #define DP_F_NUM (1 << 3)
152 #define DP_F_ZERO (1 << 4)
153 #define DP_F_UP (1 << 5)
154 #define DP_F_UNSIGNED (1 << 6)
156 /* conversion flags */
159 #define DP_C_LDOUBLE 3
162 /* some handy macros */
163 #define char_to_int(p) (p - '0')
164 #define MAX(p,q) ((p >= q) ? p : q)
166 #ifndef USE_ALLOCATING_PRINT
176 _dopr(dopr_outch, dopr_isbig, dopr_copy,
177 &buffer, &maxlen, retlen, &ignored, format, args);
188 size_t dummy_maxlen = 0;
190 _dopr(doapr_outch, doapr_isbig, doapr_copy,
191 buffer, &dummy_maxlen, retlen, &ignored, format, args);
197 void (*outch_fn)(char **, size_t *, size_t *, int),
198 int (*isbig_fn)(size_t, size_t),
199 int (*copy_fn)(size_t),
218 state = DP_S_DEFAULT;
219 flags = currlen = cflags = min = 0;
223 while (state != DP_S_DONE) {
224 if ((ch == '\0') || (*isbig_fn)(currlen, *maxlen))
232 (*outch_fn)(buffer, &currlen, maxlen, ch);
263 if (isdigit((unsigned char)ch)) {
264 min = 10 * min + char_to_int(ch);
266 } else if (ch == '*') {
267 min = va_arg(args, int);
281 if (isdigit((unsigned char)ch)) {
284 max = 10 * max + char_to_int(ch);
286 } else if (ch == '*') {
287 max = va_arg(args, int);
300 if (*format == 'l') {
312 cflags = DP_C_LDOUBLE;
326 value = (short int)va_arg(args, int);
329 value = va_arg(args, long int);
332 value = va_arg(args, LLONG);
335 value = va_arg(args, int);
338 fmtint(outch_fn, buffer, &currlen, maxlen,
339 value, 10, min, max, flags);
347 flags |= DP_F_UNSIGNED;
350 value = (unsigned short int)va_arg(args, unsigned int);
353 value = (LLONG) va_arg(args,
357 value = va_arg(args, unsigned LLONG);
360 value = (LLONG) va_arg(args,
364 fmtint(outch_fn, buffer, &currlen, maxlen, value,
365 ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
369 if (cflags == DP_C_LDOUBLE)
370 fvalue = va_arg(args, LDOUBLE);
372 fvalue = va_arg(args, double);
373 fmtfp(outch_fn, buffer, &currlen, maxlen,
374 fvalue, min, max, flags);
379 if (cflags == DP_C_LDOUBLE)
380 fvalue = va_arg(args, LDOUBLE);
382 fvalue = va_arg(args, double);
387 if (cflags == DP_C_LDOUBLE)
388 fvalue = va_arg(args, LDOUBLE);
390 fvalue = va_arg(args, double);
393 (*outch_fn)(buffer, &currlen, maxlen,
397 strvalue = va_arg(args, char *);
399 max = (*copy_fn)(*maxlen);
400 fmtstr(outch_fn, buffer, &currlen, maxlen, strvalue,
404 value = (long)va_arg(args, void *);
405 fmtint(outch_fn, buffer, &currlen, maxlen,
406 value, 16, min, max, flags);
409 if (cflags == DP_C_SHORT) {
411 num = va_arg(args, short int *);
413 } else if (cflags == DP_C_LONG) { /* XXX */
415 num = va_arg(args, long int *);
416 *num = (long int) currlen;
417 } else if (cflags == DP_C_LLONG) { /* XXX */
419 num = va_arg(args, LLONG *);
420 *num = (LLONG) currlen;
423 num = va_arg(args, int *);
428 (*outch_fn)(buffer, &currlen, maxlen, ch);
431 /* not supported yet, treat as next char */
439 state = DP_S_DEFAULT;
440 flags = cflags = min = 0;
449 *truncated = (currlen > *maxlen - 1);
451 currlen = *maxlen - 1;
452 (*buffer)[currlen] = '\0';
459 void (*outch_fn)(char **, size_t *, size_t *, int),
473 for (strln = 0; value[strln]; ++strln)
475 padlen = min - strln;
478 if (flags & DP_F_MINUS)
481 while ((padlen > 0) && (cnt < max)) {
482 (*outch_fn)(buffer, currlen, maxlen, ' ');
486 while (*value && (cnt < max)) {
487 (*outch_fn)(buffer, currlen, maxlen, *value++);
490 while ((padlen < 0) && (cnt < max)) {
491 (*outch_fn)(buffer, currlen, maxlen, ' ');
499 void (*outch_fn)(char **, size_t *, size_t *, int),
510 unsigned LLONG uvalue;
520 if (!(flags & DP_F_UNSIGNED)) {
524 } else if (flags & DP_F_PLUS)
526 else if (flags & DP_F_SPACE)
533 (caps ? "0123456789ABCDEF" : "0123456789abcdef")
534 [uvalue % (unsigned) base];
535 uvalue = (uvalue / (unsigned) base);
536 } while (uvalue && (place < 20));
541 zpadlen = max - place;
542 spadlen = min - MAX(max, place) - (signvalue ? 1 : 0);
547 if (flags & DP_F_ZERO) {
548 zpadlen = MAX(zpadlen, spadlen);
551 if (flags & DP_F_MINUS)
555 while (spadlen > 0) {
556 (*outch_fn)(buffer, currlen, maxlen, ' ');
562 (*outch_fn)(buffer, currlen, maxlen, signvalue);
566 while (zpadlen > 0) {
567 (*outch_fn)(buffer, currlen, maxlen, '0');
573 (*outch_fn)(buffer, currlen, maxlen, convert[--place]);
575 /* left justified spaces */
576 while (spadlen < 0) {
577 (*outch_fn)(buffer, currlen, maxlen, ' ');
584 abs_val(LDOUBLE value)
586 LDOUBLE result = value;
607 intpart = (long) value;
608 value = value - intpart;
616 void (*outch_fn)(char **, size_t *, size_t *, int),
639 ufvalue = abs_val(fvalue);
642 else if (flags & DP_F_PLUS)
644 else if (flags & DP_F_SPACE)
647 intpart = (long)ufvalue;
649 /* sorry, we only support 9 digits past the decimal because of our
654 /* we "cheat" by converting the fractional part to integer by
655 multiplying by a factor of 10 */
656 fracpart = round((pow10(max)) * (ufvalue - intpart));
658 if (fracpart >= pow10(max)) {
660 fracpart -= (long)pow10(max);
663 /* convert integer part */
666 (caps ? "0123456789ABCDEF"
667 : "0123456789abcdef")[intpart % 10];
668 intpart = (intpart / 10);
669 } while (intpart && (iplace < 20));
672 iconvert[iplace] = 0;
674 /* convert fractional part */
677 (caps ? "0123456789ABCDEF"
678 : "0123456789abcdef")[fracpart % 10];
679 fracpart = (fracpart / 10);
680 } while (fracpart && (fplace < 20));
683 fconvert[fplace] = 0;
685 /* -1 for decimal point, another -1 if we are printing a sign */
686 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
687 zpadlen = max - fplace;
692 if (flags & DP_F_MINUS)
695 if ((flags & DP_F_ZERO) && (padlen > 0)) {
697 (*outch_fn)(buffer, currlen, maxlen, signvalue);
702 (*outch_fn)(buffer, currlen, maxlen, '0');
707 (*outch_fn)(buffer, currlen, maxlen, ' ');
711 (*outch_fn)(buffer, currlen, maxlen, signvalue);
714 (*outch_fn)(buffer, currlen, maxlen, iconvert[--iplace]);
717 * Decimal point. This should probably use locale to find the correct
721 (*outch_fn)(buffer, currlen, maxlen, '.');
724 (*outch_fn)(buffer, currlen, maxlen, fconvert[--fplace]);
726 while (zpadlen > 0) {
727 (*outch_fn)(buffer, currlen, maxlen, '0');
732 (*outch_fn)(buffer, currlen, maxlen, ' ');
744 #ifdef USE_ALLOCATING_PRINT
749 /* Return as high an integer as possible */
759 return currlen > maxlen;
762 #ifdef USE_ALLOCATING_PRINT
779 if (*currlen < *maxlen)
780 (*buffer)[(*currlen)++] = (char)c;
784 #ifdef USE_ALLOCATING_PRINT
792 if (*buffer == NULL) {
795 *buffer = OPENSSL_malloc(*maxlen);
797 while (*currlen >= *maxlen) {
799 *buffer = OPENSSL_realloc(*buffer, *maxlen);
801 /* What to do if *buffer is NULL? */
802 assert(*buffer != NULL);
804 (*buffer)[(*currlen)++] = (char)c;
809 /***************************************************************************/
811 int BIO_printf (BIO *bio, const char *format, ...)
816 #ifdef USE_ALLOCATING_PRINT
819 MS_STATIC char hugebuf[1024*2]; /* 10k in one chunk is the limit */
822 va_start(args, format);
824 #ifndef USE_ALLOCATING_PRINT
826 dopr(hugebuf, sizeof(hugebuf), &retlen, format, args);
829 CRYPTO_push_info("doapr()");
830 doapr(&hugebuf, &retlen, format, args);
834 ret=BIO_write(bio, hugebuf, (int)retlen);
836 #ifdef USE_ALLOCATING_PRINT
837 OPENSSL_free(hugebuf);
845 /* As snprintf is not available everywhere, we provide our own implementation.
846 * This function has nothing to do with BIOs, but it's closely related
847 * to BIO_printf, and we need *some* name prefix ...
848 * (XXX the function should be renamed, but to what?) */
849 int BIO_snprintf(char *buf, size_t n, const char *format, ...)
855 va_start(args, format);
856 _dopr(dopr_outch, dopr_isbig, dopr_copy,
857 &buf, &n, &retlen, &truncated, format, args);
859 /* In case of truncation, return -1 like traditional snprintf.
860 * (Current drafts for ISO/IEC 9899 say snprintf should return
861 * the number of characters that would have been written,
862 * had the buffer been large enough.) */
865 return (retlen <= INT_MAX) ? retlen : -1;