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diff -up openssl-1.0.1e/crypto/bio/b_print.c.bio-printf openssl-1.0.1e/crypto/bio/b_print.c
--- openssl-1.0.1e/crypto/bio/b_print.c.bio-printf 2013-02-11 16:26:04.000000000 +0100
+++ openssl-1.0.1e/crypto/bio/b_print.c 2016-04-07 14:36:55.538117697 +0200
@@ -125,14 +125,14 @@
#define LLONG long
#endif
-static void fmtstr (char **, char **, size_t *, size_t *,
+static int fmtstr(char **, char **, size_t *, size_t *,
const char *, int, int, int);
-static void fmtint (char **, char **, size_t *, size_t *,
+static int fmtint(char **, char **, size_t *, size_t *,
LLONG, int, int, int, int);
-static void fmtfp (char **, char **, size_t *, size_t *,
+static int 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,
+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);
@@ -165,7 +165,7 @@ static void _dopr(char **sbuffer, char *
#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,
@@ -200,7 +200,8 @@ _dopr(
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:
@@ -306,8 +307,9 @@ _dopr(
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;
@@ -332,17 +334,19 @@ _dopr(
unsigned int);
break;
}
- fmtint(sbuffer, buffer, &currlen, maxlen, value,
+ if (!fmtint(sbuffer, buffer, &currlen, maxlen, value,
ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
- min, max, flags);
+ 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;
@@ -361,8 +365,9 @@ _dopr(
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 *);
@@ -372,13 +377,15 @@ _dopr(
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) {
@@ -400,7 +407,8 @@ _dopr(
}
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 */
@@ -424,12 +432,13 @@ _dopr(
*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,
@@ -440,36 +449,44 @@ fmtstr(
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,
@@ -533,37 +550,44 @@ fmtint(
/* 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
@@ -597,7 +621,7 @@ roundv(LDOUBLE value)
return intpart;
}
-static void
+static int
fmtfp(
char **sbuffer,
char **buffer,
@@ -616,7 +640,6 @@ fmtfp(
int fplace = 0;
int padlen = 0;
int zpadlen = 0;
- int caps = 0;
long intpart;
long fracpart;
long max10;
@@ -650,9 +673,7 @@ fmtfp(
/* convert integer part */
do {
- iconvert[iplace++] =
- (caps ? "0123456789ABCDEF"
- : "0123456789abcdef")[intpart % 10];
+ iconvert[iplace++] = "0123456789"[intpart % 10];
intpart = (intpart / 10);
} while (intpart && (iplace < (int)sizeof(iconvert)));
if (iplace == sizeof iconvert)
@@ -661,9 +682,7 @@ fmtfp(
/* convert fractional part */
do {
- fconvert[fplace++] =
- (caps ? "0123456789ABCDEF"
- : "0123456789abcdef")[fracpart % 10];
+ fconvert[fplace++] = "0123456789"[fracpart % 10];
fracpart = (fracpart / 10);
} while (fplace < max);
if (fplace == sizeof fconvert)
@@ -682,47 +701,61 @@ fmtfp(
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,
@@ -733,24 +766,30 @@ doapr_outch(
/* If we haven't at least one buffer, someone has doe a big booboo */
assert(*sbuffer != NULL || buffer != NULL);
- if (buffer) {
- while (*currlen >= *maxlen) {
- if (*buffer == NULL) {
- if (*maxlen == 0)
- *maxlen = 1024;
+ /* |currlen| must always be <= |*maxlen| */
+ assert(*currlen <= *maxlen);
+
+ if (buffer && *currlen == *maxlen) {
+ if (*maxlen > INT_MAX - BUFFER_INC)
+ return 0;
+
+ *maxlen += BUFFER_INC;
+ if (*buffer == NULL) {
*buffer = OPENSSL_malloc(*maxlen);
+ if (*buffer == NULL)
+ return 0;
if (*currlen > 0) {
assert(*sbuffer != NULL);
memcpy(*buffer, *sbuffer, *currlen);
}
*sbuffer = NULL;
- } else {
- *maxlen += 1024;
- *buffer = OPENSSL_realloc(*buffer, *maxlen);
- }
+ } else {
+ char *tmpbuf;
+ tmpbuf = OPENSSL_realloc(*buffer, *maxlen);
+ if (tmpbuf == NULL)
+ return 0;
+ *buffer = tmpbuf;
}
- /* What to do if *buffer is NULL? */
- assert(*sbuffer != NULL || *buffer != NULL);
}
if (*currlen < *maxlen) {
@@ -760,7 +799,7 @@ doapr_outch(
(*buffer)[(*currlen)++] = (char)c;
}
- return;
+ return 1;
}
/***************************************************************************/
@@ -792,11 +831,15 @@ int BIO_vprintf (BIO *bio, const char *f
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);
+ ret = BIO_write(bio, dynbuf, (int)retlen);
OPENSSL_free(dynbuf);
}
else
@@ -829,7 +872,8 @@ int BIO_vsnprintf(char *buf, size_t n, c
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)
/* In case of truncation, return -1 like traditional snprintf.