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.
69 #ifndef NO_SYS_TYPES_H
70 #include <sys/types.h>
72 #include <openssl/bio.h>
75 # ifndef HAVE_LONG_LONG
76 # define HAVE_LONG_LONG 1
80 /***************************************************************************/
83 * Copyright Patrick Powell 1995
84 * This code is based on code written by Patrick Powell <papowell@astart.com>
85 * It may be used for any purpose as long as this notice remains intact
86 * on all source code distributions.
90 * This code contains numerious changes and enhancements which were
91 * made by lots of contributors over the last years to Patrick Powell's
94 * o Patrick Powell <papowell@astart.com> (1995)
95 * o Brandon Long <blong@fiction.net> (1996, for Mutt)
96 * o Thomas Roessler <roessler@guug.de> (1998, for Mutt)
97 * o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt)
98 * o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
99 * o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
100 * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
101 * o ... (for OpenSSL)
105 #define LDOUBLE long double
107 #define LDOUBLE double
111 #define LLONG long long
116 static void fmtstr (void (*)(char **, size_t *, size_t *, int),
117 char **, size_t *, size_t *, const char *, int, int,
119 static void fmtint (void (*)(char **, size_t *, size_t *, int),
120 char **, size_t *, size_t *, LLONG, int, int, int, int);
121 static void fmtfp (void (*)(char **, size_t *, size_t *, int),
122 char **, size_t *, size_t *, LDOUBLE, int, int, int);
123 static int dopr_isbig (size_t, size_t);
124 static int dopr_copy (size_t);
125 static void dopr_outch (char **, size_t *, size_t *, int);
126 #ifdef USE_ALLOCATING_PRINT
127 static int doapr_isbig (size_t, size_t);
128 static int doapr_copy (size_t);
129 static void doapr_outch (char **, size_t *, size_t *, int);
131 static void _dopr(void (*)(char **, size_t *, size_t *, int),
132 int (*)(size_t, size_t), int (*)(size_t),
133 char **buffer, size_t *maxlen, size_t *retlen, int *truncated,
134 const char *format, va_list args);
136 /* format read states */
137 #define DP_S_DEFAULT 0
146 /* format flags - Bits */
147 #define DP_F_MINUS (1 << 0)
148 #define DP_F_PLUS (1 << 1)
149 #define DP_F_SPACE (1 << 2)
150 #define DP_F_NUM (1 << 3)
151 #define DP_F_ZERO (1 << 4)
152 #define DP_F_UP (1 << 5)
153 #define DP_F_UNSIGNED (1 << 6)
155 /* conversion flags */
158 #define DP_C_LDOUBLE 3
161 /* some handy macros */
162 #define char_to_int(p) (p - '0')
163 #define MAX(p,q) ((p >= q) ? p : q)
165 #ifndef USE_ALLOCATING_PRINT
175 _dopr(dopr_outch, dopr_isbig, dopr_copy,
176 &buffer, &maxlen, retlen, &ignored, format, args);
187 size_t dummy_maxlen = 0;
189 _dopr(doapr_outch, doapr_isbig, doapr_copy,
190 buffer, &dummy_maxlen, retlen, &ignored, format, args);
196 void (*outch_fn)(char **, size_t *, size_t *, int),
197 int (*isbig_fn)(size_t, size_t),
198 int (*copy_fn)(size_t),
217 state = DP_S_DEFAULT;
218 flags = currlen = cflags = min = 0;
222 while (state != DP_S_DONE) {
223 if ((ch == '\0') || (*isbig_fn)(currlen, *maxlen))
231 (*outch_fn)(buffer, &currlen, maxlen, ch);
262 if (isdigit((unsigned char)ch)) {
263 min = 10 * min + char_to_int(ch);
265 } else if (ch == '*') {
266 min = va_arg(args, int);
280 if (isdigit((unsigned char)ch)) {
283 max = 10 * max + char_to_int(ch);
285 } else if (ch == '*') {
286 max = va_arg(args, int);
299 if (*format == 'l') {
311 cflags = DP_C_LDOUBLE;
325 value = (short int)va_arg(args, int);
328 value = va_arg(args, long int);
331 value = va_arg(args, LLONG);
334 value = va_arg(args, int);
337 fmtint(outch_fn, buffer, &currlen, maxlen,
338 value, 10, min, max, flags);
346 flags |= DP_F_UNSIGNED;
349 value = (unsigned short int)va_arg(args, unsigned int);
352 value = (LLONG) va_arg(args,
356 value = va_arg(args, unsigned LLONG);
359 value = (LLONG) va_arg(args,
363 fmtint(outch_fn, buffer, &currlen, maxlen, value,
364 ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
368 if (cflags == DP_C_LDOUBLE)
369 fvalue = va_arg(args, LDOUBLE);
371 fvalue = va_arg(args, double);
372 fmtfp(outch_fn, buffer, &currlen, maxlen,
373 fvalue, min, max, flags);
378 if (cflags == DP_C_LDOUBLE)
379 fvalue = va_arg(args, LDOUBLE);
381 fvalue = va_arg(args, double);
386 if (cflags == DP_C_LDOUBLE)
387 fvalue = va_arg(args, LDOUBLE);
389 fvalue = va_arg(args, double);
392 (*outch_fn)(buffer, &currlen, maxlen,
396 strvalue = va_arg(args, char *);
398 max = (*copy_fn)(*maxlen);
399 fmtstr(outch_fn, buffer, &currlen, maxlen, strvalue,
403 value = (long)va_arg(args, void *);
404 fmtint(outch_fn, buffer, &currlen, maxlen,
405 value, 16, min, max, flags);
408 if (cflags == DP_C_SHORT) {
410 num = va_arg(args, short int *);
412 } else if (cflags == DP_C_LONG) { /* XXX */
414 num = va_arg(args, long int *);
415 *num = (long int) currlen;
416 } else if (cflags == DP_C_LLONG) { /* XXX */
418 num = va_arg(args, LLONG *);
419 *num = (LLONG) currlen;
422 num = va_arg(args, int *);
427 (*outch_fn)(buffer, &currlen, maxlen, ch);
430 /* not supported yet, treat as next char */
438 state = DP_S_DEFAULT;
439 flags = cflags = min = 0;
448 *truncated = (currlen > *maxlen - 1);
450 currlen = *maxlen - 1;
451 (*buffer)[currlen] = '\0';
458 void (*outch_fn)(char **, size_t *, size_t *, int),
472 for (strln = 0; value[strln]; ++strln)
474 padlen = min - strln;
477 if (flags & DP_F_MINUS)
480 while ((padlen > 0) && (cnt < max)) {
481 (*outch_fn)(buffer, currlen, maxlen, ' ');
485 while (*value && (cnt < max)) {
486 (*outch_fn)(buffer, currlen, maxlen, *value++);
489 while ((padlen < 0) && (cnt < max)) {
490 (*outch_fn)(buffer, currlen, maxlen, ' ');
498 void (*outch_fn)(char **, size_t *, size_t *, int),
509 unsigned LLONG uvalue;
519 if (!(flags & DP_F_UNSIGNED)) {
523 } else if (flags & DP_F_PLUS)
525 else if (flags & DP_F_SPACE)
532 (caps ? "0123456789ABCDEF" : "0123456789abcdef")
533 [uvalue % (unsigned) base];
534 uvalue = (uvalue / (unsigned) base);
535 } while (uvalue && (place < 20));
540 zpadlen = max - place;
541 spadlen = min - MAX(max, place) - (signvalue ? 1 : 0);
546 if (flags & DP_F_ZERO) {
547 zpadlen = MAX(zpadlen, spadlen);
550 if (flags & DP_F_MINUS)
554 while (spadlen > 0) {
555 (*outch_fn)(buffer, currlen, maxlen, ' ');
561 (*outch_fn)(buffer, currlen, maxlen, signvalue);
565 while (zpadlen > 0) {
566 (*outch_fn)(buffer, currlen, maxlen, '0');
572 (*outch_fn)(buffer, currlen, maxlen, convert[--place]);
574 /* left justified spaces */
575 while (spadlen < 0) {
576 (*outch_fn)(buffer, currlen, maxlen, ' ');
583 abs_val(LDOUBLE value)
585 LDOUBLE result = value;
606 intpart = (long) value;
607 value = value - intpart;
615 void (*outch_fn)(char **, size_t *, size_t *, int),
638 ufvalue = abs_val(fvalue);
641 else if (flags & DP_F_PLUS)
643 else if (flags & DP_F_SPACE)
646 intpart = (long)ufvalue;
648 /* sorry, we only support 9 digits past the decimal because of our
653 /* we "cheat" by converting the fractional part to integer by
654 multiplying by a factor of 10 */
655 fracpart = round((pow10(max)) * (ufvalue - intpart));
657 if (fracpart >= pow10(max)) {
659 fracpart -= (long)pow10(max);
662 /* convert integer part */
665 (caps ? "0123456789ABCDEF"
666 : "0123456789abcdef")[intpart % 10];
667 intpart = (intpart / 10);
668 } while (intpart && (iplace < 20));
671 iconvert[iplace] = 0;
673 /* convert fractional part */
676 (caps ? "0123456789ABCDEF"
677 : "0123456789abcdef")[fracpart % 10];
678 fracpart = (fracpart / 10);
679 } while (fracpart && (fplace < 20));
682 fconvert[fplace] = 0;
684 /* -1 for decimal point, another -1 if we are printing a sign */
685 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
686 zpadlen = max - fplace;
691 if (flags & DP_F_MINUS)
694 if ((flags & DP_F_ZERO) && (padlen > 0)) {
696 (*outch_fn)(buffer, currlen, maxlen, signvalue);
701 (*outch_fn)(buffer, currlen, maxlen, '0');
706 (*outch_fn)(buffer, currlen, maxlen, ' ');
710 (*outch_fn)(buffer, currlen, maxlen, signvalue);
713 (*outch_fn)(buffer, currlen, maxlen, iconvert[--iplace]);
716 * Decimal point. This should probably use locale to find the correct
720 (*outch_fn)(buffer, currlen, maxlen, '.');
723 (*outch_fn)(buffer, currlen, maxlen, fconvert[--fplace]);
725 while (zpadlen > 0) {
726 (*outch_fn)(buffer, currlen, maxlen, '0');
731 (*outch_fn)(buffer, currlen, maxlen, ' ');
743 #ifdef USE_ALLOCATING_PRINT
748 /* Return as high an integer as possible */
758 return currlen > maxlen;
761 #ifdef USE_ALLOCATING_PRINT
778 if (*currlen < *maxlen)
779 (*buffer)[(*currlen)++] = (char)c;
783 #ifdef USE_ALLOCATING_PRINT
791 if (*buffer == NULL) {
794 *buffer = OPENSSL_malloc(*maxlen);
796 while (*currlen >= *maxlen) {
798 *buffer = OPENSSL_realloc(*buffer, *maxlen);
800 /* What to do if *buffer is NULL? */
801 assert(*buffer != NULL);
803 (*buffer)[(*currlen)++] = (char)c;
808 /***************************************************************************/
810 int BIO_printf (BIO *bio, const char *format, ...)
815 va_start(args, format);
817 ret = BIO_vprintf(bio, format, args);
823 int BIO_vprintf (BIO *bio, const char *format, va_list args)
827 #ifdef USE_ALLOCATING_PRINT
830 MS_STATIC char hugebuf[1024*10];
833 #ifndef USE_ALLOCATING_PRINT
835 dopr(hugebuf, sizeof(hugebuf), &retlen, format, args);
838 CRYPTO_push_info("doapr()");
839 doapr(&hugebuf, &retlen, format, args);
843 ret=BIO_write(bio, hugebuf, (int)retlen);
845 #ifdef USE_ALLOCATING_PRINT
846 OPENSSL_free(hugebuf);
853 /* As snprintf is not available everywhere, we provide our own implementation.
854 * This function has nothing to do with BIOs, but it's closely related
855 * to BIO_printf, and we need *some* name prefix ...
856 * (XXX the function should be renamed, but to what?) */
857 int BIO_snprintf(char *buf, size_t n, const char *format, ...)
862 va_start(args, format);
864 ret = BIO_vsnprintf(buf, n, format, args);
870 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
875 _dopr(dopr_outch, dopr_isbig, dopr_copy,
876 &buf, &n, &retlen, &truncated, format, args);
878 /* In case of truncation, return -1 like traditional snprintf.
879 * (Current drafts for ISO/IEC 9899 say snprintf should return
880 * the number of characters that would have been written,
881 * had the buffer been large enough.) */
884 return (retlen <= INT_MAX) ? retlen : -1;