aboutsummaryrefslogtreecommitdiffstats
path: root/crypto/bio/b_print.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/bio/b_print.c')
-rw-r--r--crypto/bio/b_print.c187
1 files changed, 116 insertions, 71 deletions
diff --git a/crypto/bio/b_print.c b/crypto/bio/b_print.c
index 7c81e25d482c..90248fa2aaba 100644
--- a/crypto/bio/b_print.c
+++ b/crypto/bio/b_print.c
@@ -125,16 +125,16 @@
# define LLONG long
#endif
-static void fmtstr(char **, char **, size_t *, size_t *,
- const char *, int, int, int);
-static void fmtint(char **, char **, size_t *, size_t *,
- LLONG, int, int, int, int);
-static void fmtfp(char **, char **, size_t *, size_t *,
- LDOUBLE, int, int, int);
-static void doapr_outch(char **, char **, size_t *, size_t *, int);
-static void _dopr(char **sbuffer, char **buffer,
- size_t *maxlen, size_t *retlen, int *truncated,
- const char *format, va_list args);
+static int fmtstr(char **, char **, size_t *, size_t *,
+ const char *, int, int, int);
+static int fmtint(char **, char **, size_t *, size_t *,
+ LLONG, int, int, int, int);
+static int fmtfp(char **, char **, size_t *, size_t *,
+ LDOUBLE, int, int, int);
+static int doapr_outch(char **, char **, size_t *, size_t *, int);
+static int _dopr(char **sbuffer, char **buffer,
+ size_t *maxlen, size_t *retlen, int *truncated,
+ const char *format, va_list args);
/* format read states */
#define DP_S_DEFAULT 0
@@ -165,7 +165,7 @@ static void _dopr(char **sbuffer, char **buffer,
#define char_to_int(p) (p - '0')
#define OSSL_MAX(p,q) ((p >= q) ? p : q)
-static void
+static int
_dopr(char **sbuffer,
char **buffer,
size_t *maxlen,
@@ -196,7 +196,8 @@ _dopr(char **sbuffer,
if (ch == '%')
state = DP_S_FLAGS;
else
- doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch))
+ return 0;
ch = *format++;
break;
case DP_S_FLAGS:
@@ -302,8 +303,9 @@ _dopr(char **sbuffer,
value = va_arg(args, int);
break;
}
- fmtint(sbuffer, buffer, &currlen, maxlen,
- value, 10, min, max, flags);
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, 10, min,
+ max, flags))
+ return 0;
break;
case 'X':
flags |= DP_F_UP;
@@ -326,17 +328,19 @@ _dopr(char **sbuffer,
value = (LLONG) va_arg(args, unsigned int);
break;
}
- fmtint(sbuffer, buffer, &currlen, maxlen, value,
- ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
- min, max, flags);
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen, value,
+ ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
+ min, max, flags))
+ return 0;
break;
case 'f':
if (cflags == DP_C_LDOUBLE)
fvalue = va_arg(args, LDOUBLE);
else
fvalue = va_arg(args, double);
- fmtfp(sbuffer, buffer, &currlen, maxlen,
- fvalue, min, max, flags);
+ if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max,
+ flags))
+ return 0;
break;
case 'E':
flags |= DP_F_UP;
@@ -355,8 +359,9 @@ _dopr(char **sbuffer,
fvalue = va_arg(args, double);
break;
case 'c':
- doapr_outch(sbuffer, buffer, &currlen, maxlen,
- va_arg(args, int));
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen,
+ va_arg(args, int)))
+ return 0;
break;
case 's':
strvalue = va_arg(args, char *);
@@ -366,13 +371,15 @@ _dopr(char **sbuffer,
else
max = *maxlen;
}
- fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
- flags, min, max);
+ if (!fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue,
+ flags, min, max))
+ return 0;
break;
case 'p':
value = (long)va_arg(args, void *);
- fmtint(sbuffer, buffer, &currlen, maxlen,
- value, 16, min, max, flags | DP_F_NUM);
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen,
+ value, 16, min, max, flags | DP_F_NUM))
+ return 0;
break;
case 'n': /* XXX */
if (cflags == DP_C_SHORT) {
@@ -394,7 +401,8 @@ _dopr(char **sbuffer,
}
break;
case '%':
- doapr_outch(sbuffer, buffer, &currlen, maxlen, ch);
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch))
+ return 0;
break;
case 'w':
/* not supported yet, treat as next char */
@@ -418,46 +426,56 @@ _dopr(char **sbuffer,
*truncated = (currlen > *maxlen - 1);
if (*truncated)
currlen = *maxlen - 1;
- doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0');
+ if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0'))
+ return 0;
*retlen = currlen - 1;
- return;
+ return 1;
}
-static void
+static int
fmtstr(char **sbuffer,
char **buffer,
size_t *currlen,
size_t *maxlen, const char *value, int flags, int min, int max)
{
- int padlen, strln;
+ int padlen;
+ size_t strln;
int cnt = 0;
if (value == 0)
value = "<NULL>";
- for (strln = 0; value[strln]; ++strln) ;
+
+ strln = strlen(value);
+ if (strln > INT_MAX)
+ strln = INT_MAX;
+
padlen = min - strln;
- if (padlen < 0)
+ if (min < 0 || padlen < 0)
padlen = 0;
if (flags & DP_F_MINUS)
padlen = -padlen;
while ((padlen > 0) && (cnt < max)) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
--padlen;
++cnt;
}
while (*value && (cnt < max)) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, *value++);
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *value++))
+ return 0;
++cnt;
}
while ((padlen < 0) && (cnt < max)) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
++padlen;
++cnt;
}
+ return 1;
}
-static void
+static int
fmtint(char **sbuffer,
char **buffer,
size_t *currlen,
@@ -517,37 +535,44 @@ fmtint(char **sbuffer,
/* spaces */
while (spadlen > 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
--spadlen;
}
/* sign */
if (signvalue)
- doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue))
+ return 0;
/* prefix */
while (*prefix) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix);
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix))
+ return 0;
prefix++;
}
/* zeros */
if (zpadlen > 0) {
while (zpadlen > 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
+ return 0;
--zpadlen;
}
}
/* digits */
- while (place > 0)
- doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]);
+ while (place > 0) {
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]))
+ return 0;
+ }
/* left justified spaces */
while (spadlen < 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
++spadlen;
}
- return;
+ return 1;
}
static LDOUBLE abs_val(LDOUBLE value)
@@ -578,7 +603,7 @@ static long roundv(LDOUBLE value)
return intpart;
}
-static void
+static int
fmtfp(char **sbuffer,
char **buffer,
size_t *currlen,
@@ -657,47 +682,61 @@ fmtfp(char **sbuffer,
if ((flags & DP_F_ZERO) && (padlen > 0)) {
if (signvalue) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue))
+ return 0;
--padlen;
signvalue = 0;
}
while (padlen > 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
+ return 0;
--padlen;
}
}
while (padlen > 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
--padlen;
}
- if (signvalue)
- doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue);
+ if (signvalue && !doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue))
+ return 0;
- while (iplace > 0)
- doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]);
+ while (iplace > 0) {
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]))
+ return 0;
+ }
/*
* Decimal point. This should probably use locale to find the correct
* char to print out.
*/
if (max > 0 || (flags & DP_F_NUM)) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, '.');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '.'))
+ return 0;
- while (fplace > 0)
- doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]);
+ while (fplace > 0) {
+ if(!doapr_outch(sbuffer, buffer, currlen, maxlen,
+ fconvert[--fplace]))
+ return 0;
+ }
}
while (zpadlen > 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, '0');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0'))
+ return 0;
--zpadlen;
}
while (padlen < 0) {
- doapr_outch(sbuffer, buffer, currlen, maxlen, ' ');
+ if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' '))
+ return 0;
++padlen;
}
+ return 1;
}
-static void
+#define BUFFER_INC 1024
+
+static int
doapr_outch(char **sbuffer,
char **buffer, size_t *currlen, size_t *maxlen, int c)
{
@@ -708,24 +747,25 @@ doapr_outch(char **sbuffer,
assert(*currlen <= *maxlen);
if (buffer && *currlen == *maxlen) {
- *maxlen += 1024;
+ if (*maxlen > INT_MAX - BUFFER_INC)
+ return 0;
+
+ *maxlen += BUFFER_INC;
if (*buffer == NULL) {
*buffer = OPENSSL_malloc(*maxlen);
- if (!*buffer) {
- /* Panic! Can't really do anything sensible. Just return */
- return;
- }
+ if (*buffer == NULL)
+ return 0;
if (*currlen > 0) {
assert(*sbuffer != NULL);
memcpy(*buffer, *sbuffer, *currlen);
}
*sbuffer = NULL;
} else {
- *buffer = OPENSSL_realloc(*buffer, *maxlen);
- if (!*buffer) {
- /* Panic! Can't really do anything sensible. Just return */
- return;
- }
+ char *tmpbuf;
+ tmpbuf = OPENSSL_realloc(*buffer, *maxlen);
+ if (tmpbuf == NULL)
+ return 0;
+ *buffer = tmpbuf;
}
}
@@ -736,7 +776,7 @@ doapr_outch(char **sbuffer,
(*buffer)[(*currlen)++] = (char)c;
}
- return;
+ return 1;
}
/***************************************************************************/
@@ -768,7 +808,11 @@ int BIO_vprintf(BIO *bio, const char *format, va_list args)
dynbuf = NULL;
CRYPTO_push_info("doapr()");
- _dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format, args);
+ if (!_dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format,
+ args)) {
+ OPENSSL_free(dynbuf);
+ return -1;
+ }
if (dynbuf) {
ret = BIO_write(bio, dynbuf, (int)retlen);
OPENSSL_free(dynbuf);
@@ -803,7 +847,8 @@ int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
size_t retlen;
int truncated;
- _dopr(&buf, NULL, &n, &retlen, &truncated, format, args);
+ if(!_dopr(&buf, NULL, &n, &retlen, &truncated, format, args))
+ return -1;
if (truncated)
/*