#include <stdarg.h>
#include <string.h>
#include <ctype.h>
+#include <assert.h>
+#include <limits.h>
#include "cryptlib.h"
#ifndef NO_SYS_TYPES_H
#include <sys/types.h>
#ifdef BN_LLONG
# ifndef HAVE_LONG_LONG
-# define HAVE_LONG_LONG
+# define HAVE_LONG_LONG 1
# endif
#endif
-static void dopr (char *buffer, size_t maxlen, size_t *retlen,
- const char *format, va_list args);
-
-int BIO_printf (BIO *bio, ...)
- {
- va_list args;
- char *format;
- int ret;
- size_t retlen;
- MS_STATIC char hugebuf[1024*2]; /* 10k in one chunk is the limit */
-
- va_start(args, bio);
- format=va_arg(args, char *);
-
- hugebuf[0]='\0';
- dopr(hugebuf, sizeof(hugebuf), &retlen, format, args);
- ret=BIO_write(bio, hugebuf, (int)retlen);
-
- va_end(args);
- return(ret);
- }
+/***************************************************************************/
/*
* Copyright Patrick Powell 1995
* o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
* o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
* o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
+ * o ... (for OpenSSL)
*/
#if HAVE_LONG_DOUBLE
#define LLONG long
#endif
-static void fmtstr (char *, size_t *, size_t, char *, int, int, int);
-static void fmtint (char *, size_t *, size_t, LLONG, int, int, int, int);
-static void fmtfp (char *, size_t *, size_t, LDOUBLE, int, int, int);
-static void dopr_outch (char *, size_t *, size_t, int);
+static void fmtstr (void (*)(char **, size_t *, size_t *, int),
+ char **, size_t *, size_t *, const char *, int, int,
+ int);
+static void fmtint (void (*)(char **, size_t *, size_t *, int),
+ char **, size_t *, size_t *, LLONG, int, int, int, int);
+static void fmtfp (void (*)(char **, size_t *, size_t *, int),
+ char **, size_t *, size_t *, LDOUBLE, int, int, int);
+static int dopr_isbig (size_t, size_t);
+static int dopr_copy (size_t);
+static void dopr_outch (char **, size_t *, size_t *, int);
+#ifdef USE_ALLOCATING_PRINT
+static int doapr_isbig (size_t, size_t);
+static int doapr_copy (size_t);
+static void doapr_outch (char **, size_t *, size_t *, int);
+#endif
+static void _dopr(void (*)(char **, size_t *, size_t *, int),
+ int (*)(size_t, size_t), int (*)(size_t),
+ char **buffer, size_t *maxlen, size_t *retlen, int *truncated,
+ const char *format, va_list args);
/* format read states */
#define DP_S_DEFAULT 0
#define char_to_int(p) (p - '0')
#define MAX(p,q) ((p >= q) ? p : q)
+#ifndef USE_ALLOCATING_PRINT
static void
dopr(
char *buffer,
size_t *retlen,
const char *format,
va_list args)
+{
+ int ignored;
+ _dopr(dopr_outch, dopr_isbig, dopr_copy,
+ &buffer, &maxlen, retlen, &ignored, format, args);
+}
+
+#else
+static void
+doapr(
+ char **buffer,
+ size_t *retlen,
+ const char *format,
+ va_list args)
+{
+ size_t dummy_maxlen = 0;
+ int ignored;
+ _dopr(doapr_outch, doapr_isbig, doapr_copy,
+ buffer, &dummy_maxlen, retlen, &ignored, format, args);
+}
+#endif
+
+static void
+_dopr(
+ void (*outch_fn)(char **, size_t *, size_t *, int),
+ int (*isbig_fn)(size_t, size_t),
+ int (*copy_fn)(size_t),
+ char **buffer,
+ size_t *maxlen,
+ size_t *retlen,
+ int *truncated,
+ const char *format,
+ va_list args)
{
char ch;
LLONG value;
ch = *format++;
while (state != DP_S_DONE) {
- if ((ch == '\0') || (currlen >= maxlen))
+ if ((ch == '\0') || (*isbig_fn)(currlen, *maxlen))
state = DP_S_DONE;
switch (state) {
if (ch == '%')
state = DP_S_FLAGS;
else
- dopr_outch(buffer, &currlen, maxlen, ch);
+ (*outch_fn)(buffer, &currlen, maxlen, ch);
ch = *format++;
break;
case DP_S_FLAGS:
value = va_arg(args, int);
break;
}
- fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags);
+ fmtint(outch_fn, buffer, &currlen, maxlen,
+ value, 10, min, max, flags);
break;
case 'X':
flags |= DP_F_UP;
unsigned int);
break;
}
- fmtint(buffer, &currlen, maxlen, value,
+ fmtint(outch_fn, buffer, &currlen, maxlen, value,
ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
min, max, flags);
break;
fvalue = va_arg(args, LDOUBLE);
else
fvalue = va_arg(args, double);
- fmtfp(buffer, &currlen, maxlen, fvalue, min, max, flags);
+ fmtfp(outch_fn, buffer, &currlen, maxlen,
+ fvalue, min, max, flags);
break;
case 'E':
flags |= DP_F_UP;
fvalue = va_arg(args, double);
break;
case 'c':
- dopr_outch(buffer, &currlen, maxlen,
+ (*outch_fn)(buffer, &currlen, maxlen,
va_arg(args, int));
break;
case 's':
strvalue = va_arg(args, char *);
if (max < 0)
- max = maxlen;
- fmtstr(buffer, &currlen, maxlen, strvalue,
- flags, min, max);
+ max = (*copy_fn)(*maxlen);
+ fmtstr(outch_fn, buffer, &currlen, maxlen, strvalue,
+ flags, min, max);
break;
case 'p':
value = (long)va_arg(args, void *);
- fmtint(buffer, &currlen, maxlen,
+ fmtint(outch_fn, buffer, &currlen, maxlen,
value, 16, min, max, flags);
break;
case 'n': /* XXX */
}
break;
case '%':
- dopr_outch(buffer, &currlen, maxlen, ch);
+ (*outch_fn)(buffer, &currlen, maxlen, ch);
break;
case 'w':
/* not supported yet, treat as next char */
break;
}
}
- if (currlen >= maxlen - 1)
- currlen = maxlen - 1;
- buffer[currlen] = '\0';
+ *truncated = (currlen > *maxlen - 1);
+ if (*truncated)
+ currlen = *maxlen - 1;
+ (*buffer)[currlen] = '\0';
*retlen = currlen;
return;
}
static void
fmtstr(
- char *buffer,
+ void (*outch_fn)(char **, size_t *, size_t *, int),
+ char **buffer,
size_t *currlen,
- size_t maxlen,
- char *value,
+ size_t *maxlen,
+ const char *value,
int flags,
int min,
int max)
padlen = -padlen;
while ((padlen > 0) && (cnt < max)) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ (*outch_fn)(buffer, currlen, maxlen, ' ');
--padlen;
++cnt;
}
while (*value && (cnt < max)) {
- dopr_outch(buffer, currlen, maxlen, *value++);
+ (*outch_fn)(buffer, currlen, maxlen, *value++);
++cnt;
}
while ((padlen < 0) && (cnt < max)) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ (*outch_fn)(buffer, currlen, maxlen, ' ');
++padlen;
++cnt;
}
static void
fmtint(
- char *buffer,
+ void (*outch_fn)(char **, size_t *, size_t *, int),
+ char **buffer,
size_t *currlen,
- size_t maxlen,
+ size_t *maxlen,
LLONG value,
int base,
int min,
/* spaces */
while (spadlen > 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ (*outch_fn)(buffer, currlen, maxlen, ' ');
--spadlen;
}
/* sign */
if (signvalue)
- dopr_outch(buffer, currlen, maxlen, signvalue);
+ (*outch_fn)(buffer, currlen, maxlen, signvalue);
/* zeros */
if (zpadlen > 0) {
while (zpadlen > 0) {
- dopr_outch(buffer, currlen, maxlen, '0');
+ (*outch_fn)(buffer, currlen, maxlen, '0');
--zpadlen;
}
}
/* digits */
while (place > 0)
- dopr_outch(buffer, currlen, maxlen, convert[--place]);
+ (*outch_fn)(buffer, currlen, maxlen, convert[--place]);
/* left justified spaces */
while (spadlen < 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ (*outch_fn)(buffer, currlen, maxlen, ' ');
++spadlen;
}
return;
static void
fmtfp(
- char *buffer,
+ void (*outch_fn)(char **, size_t *, size_t *, int),
+ char **buffer,
size_t *currlen,
- size_t maxlen,
+ size_t *maxlen,
LDOUBLE fvalue,
int min,
int max,
if ((flags & DP_F_ZERO) && (padlen > 0)) {
if (signvalue) {
- dopr_outch(buffer, currlen, maxlen, signvalue);
+ (*outch_fn)(buffer, currlen, maxlen, signvalue);
--padlen;
signvalue = 0;
}
while (padlen > 0) {
- dopr_outch(buffer, currlen, maxlen, '0');
+ (*outch_fn)(buffer, currlen, maxlen, '0');
--padlen;
}
}
while (padlen > 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ (*outch_fn)(buffer, currlen, maxlen, ' ');
--padlen;
}
if (signvalue)
- dopr_outch(buffer, currlen, maxlen, signvalue);
+ (*outch_fn)(buffer, currlen, maxlen, signvalue);
while (iplace > 0)
- dopr_outch(buffer, currlen, maxlen, iconvert[--iplace]);
+ (*outch_fn)(buffer, currlen, maxlen, iconvert[--iplace]);
/*
* Decimal point. This should probably use locale to find the correct
* char to print out.
*/
if (max > 0) {
- dopr_outch(buffer, currlen, maxlen, '.');
+ (*outch_fn)(buffer, currlen, maxlen, '.');
while (fplace > 0)
- dopr_outch(buffer, currlen, maxlen, fconvert[--fplace]);
+ (*outch_fn)(buffer, currlen, maxlen, fconvert[--fplace]);
}
while (zpadlen > 0) {
- dopr_outch(buffer, currlen, maxlen, '0');
+ (*outch_fn)(buffer, currlen, maxlen, '0');
--zpadlen;
}
while (padlen < 0) {
- dopr_outch(buffer, currlen, maxlen, ' ');
+ (*outch_fn)(buffer, currlen, maxlen, ' ');
++padlen;
}
}
+static int
+dopr_copy(
+ size_t len)
+{
+ return len;
+}
+
+#ifdef USE_ALLOCATING_PRINT
+static int
+doapr_copy(
+ size_t len)
+{
+ /* Return as high an integer as possible */
+ return INT_MAX;
+}
+#endif
+
+static int
+dopr_isbig(
+ size_t currlen,
+ size_t maxlen)
+{
+ return currlen > maxlen;
+}
+
+#ifdef USE_ALLOCATING_PRINT
+static int
+doapr_isbig(
+ size_t currlen,
+ size_t maxlen)
+{
+ return 0;
+}
+#endif
+
static void
dopr_outch(
- char *buffer,
+ char **buffer,
size_t *currlen,
- size_t maxlen,
+ size_t *maxlen,
+ int c)
+{
+ if (*currlen < *maxlen)
+ (*buffer)[(*currlen)++] = (char)c;
+ return;
+}
+
+#ifdef USE_ALLOCATING_PRINT
+static void
+doapr_outch(
+ char **buffer,
+ size_t *currlen,
+ size_t *maxlen,
int c)
{
- if (*currlen < maxlen)
- buffer[(*currlen)++] = (char)c;
+ if (*buffer == NULL) {
+ if (*maxlen == 0)
+ *maxlen = 1024;
+ *buffer = Malloc(*maxlen);
+ }
+ while (*currlen >= *maxlen) {
+ *maxlen += 1024;
+ *buffer = Realloc(*buffer, *maxlen);
+ }
+ /* What to do if *buffer is NULL? */
+ assert(*buffer != NULL);
+
+ (*buffer)[(*currlen)++] = (char)c;
return;
}
+#endif
+
+/***************************************************************************/
+
+int BIO_printf (BIO *bio, const char *format, ...)
+ {
+ va_list args;
+ int ret;
+ size_t retlen;
+#ifdef USE_ALLOCATING_PRINT
+ char *hugebuf;
+#else
+ MS_STATIC char hugebuf[1024*2]; /* 10k in one chunk is the limit */
+#endif
+
+ va_start(args, format);
+
+#ifndef USE_ALLOCATING_PRINT
+ hugebuf[0]='\0';
+ dopr(hugebuf, sizeof(hugebuf), &retlen, format, args);
+#else
+ hugebuf = NULL;
+ CRYPTO_push_info("doapr()");
+ doapr(&hugebuf, &retlen, format, args);
+ if (hugebuf)
+ {
+#endif
+ ret=BIO_write(bio, hugebuf, (int)retlen);
+
+#ifdef USE_ALLOCATING_PRINT
+ Free(hugebuf);
+ }
+ CRYPTO_pop_info();
+#endif
+ va_end(args);
+ return(ret);
+ }
+
+/* As snprintf is not available everywhere, we provide our own implementation.
+ * This function has nothing to do with BIOs, but it's closely related
+ * to BIO_printf, and we need *some* name prefix ...
+ * (XXX the function should be renamed, but to what?) */
+int BIO_snprintf(char *buf, size_t n, const char *format, ...)
+ {
+ va_list args;
+ size_t retlen;
+ int truncated;
+
+ va_start(args, format);
+ _dopr(dopr_outch, dopr_isbig, dopr_copy,
+ &buf, &n, &retlen, &truncated, format, args);
+ if (truncated)
+ /* In case of truncation, return -1 like traditional snprintf.
+ * (Current drafts for ISO/IEC 9899 say snprintf should return
+ * the number of characters that would have been written,
+ * had the buffer been large enough.) */
+ return -1;
+ else
+ return (retlen <= INT_MAX) ? retlen : -1;
+ }
projects / openssl.git / blobdiff