1 files changed, 313 insertions, 294 deletions

diff --git a/drivers/builtin_openssl2/crypto/bn/bn_print.c b/drivers/builtin_openssl2/crypto/bn/bn_print.c
index 1743b6a7e2..bfa31efc56 100644
--- a/drivers/builtin_openssl2/crypto/bn/bn_print.c
+++ b/drivers/builtin_openssl2/crypto/bn/bn_print.c
@@ -5,21 +5,21 @@
  * This package is an SSL implementation written
  * by Eric Young (eay@cryptsoft.com).
  * The implementation was written so as to conform with Netscapes SSL.
- * 
+ *
  * This library is free for commercial and non-commercial use as long as
  * the following conditions are aheared to.  The following conditions
  * apply to all code found in this distribution, be it the RC4, RSA,
  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  * included with this distribution is covered by the same copyright terms
  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- * 
+ *
  * Copyright remains Eric Young's, and as such any Copyright notices in
  * the code are not to be removed.
  * If this package is used in a product, Eric Young should be given attribution
  * as the author of the parts of the library used.
  * This can be in the form of a textual message at program startup or
  * in documentation (online or textual) provided with the package.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -34,10 +34,10 @@
  *     Eric Young (eay@cryptsoft.com)"
  *    The word 'cryptographic' can be left out if the rouines from the library
  *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from 
+ * 4. If you include any Windows specific code (or a derivative thereof) from
  *    the apps directory (application code) you must include an acknowledgement:
  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -49,7 +49,7 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
- * 
+ *
  * The licence and distribution terms for any publically available version or
  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  * copied and put under another distribution licence
@@ -58,321 +58,340 @@
 
 #include <stdio.h>
 #include <ctype.h>
+#include <limits.h>
 #include "cryptlib.h"
 #include <openssl/buffer.h>
 #include "bn_lcl.h"
 
-static const char Hex[]="0123456789ABCDEF";
+static const char Hex[] = "0123456789ABCDEF";
 
 /* Must 'OPENSSL_free' the returned data */
 char *BN_bn2hex(const BIGNUM *a)
-	{
-	int i,j,v,z=0;
-	char *buf;
-	char *p;
-
-	buf=(char *)OPENSSL_malloc(a->top*BN_BYTES*2+2);
-	if (buf == NULL)
-		{
-		BNerr(BN_F_BN_BN2HEX,ERR_R_MALLOC_FAILURE);
-		goto err;
-		}
-	p=buf;
-	if (a->neg) *(p++)='-';
-	if (BN_is_zero(a)) *(p++)='0';
-	for (i=a->top-1; i >=0; i--)
-		{
-		for (j=BN_BITS2-8; j >= 0; j-=8)
-			{
-			/* strip leading zeros */
-			v=((int)(a->d[i]>>(long)j))&0xff;
-			if (z || (v != 0))
-				{
-				*(p++)=Hex[v>>4];
-				*(p++)=Hex[v&0x0f];
-				z=1;
-				}
-			}
-		}
-	*p='\0';
-err:
-	return(buf);
-	}
+{
+    int i, j, v, z = 0;
+    char *buf;
+    char *p;
+
+    if (a->neg && BN_is_zero(a)) {
+        /* "-0" == 3 bytes including NULL terminator */
+        buf = OPENSSL_malloc(3);
+    } else {
+        buf = OPENSSL_malloc(a->top * BN_BYTES * 2 + 2);
+    }
+    if (buf == NULL) {
+        BNerr(BN_F_BN_BN2HEX, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    p = buf;
+    if (a->neg)
+        *(p++) = '-';
+    if (BN_is_zero(a))
+        *(p++) = '0';
+    for (i = a->top - 1; i >= 0; i--) {
+        for (j = BN_BITS2 - 8; j >= 0; j -= 8) {
+            /* strip leading zeros */
+            v = ((int)(a->d[i] >> (long)j)) & 0xff;
+            if (z || (v != 0)) {
+                *(p++) = Hex[v >> 4];
+                *(p++) = Hex[v & 0x0f];
+                z = 1;
+            }
+        }
+    }
+    *p = '\0';
+ err:
+    return (buf);
+}
 
 /* Must 'OPENSSL_free' the returned data */
 char *BN_bn2dec(const BIGNUM *a)
-	{
-	int i=0,num, ok = 0;
-	char *buf=NULL;
-	char *p;
-	BIGNUM *t=NULL;
-	BN_ULONG *bn_data=NULL,*lp;
-
-	/* get an upper bound for the length of the decimal integer
-	 * num <= (BN_num_bits(a) + 1) * log(2)
-	 *     <= 3 * BN_num_bits(a) * 0.1001 + log(2) + 1     (rounding error)
-	 *     <= BN_num_bits(a)/10 + BN_num_bits/1000 + 1 + 1 
-	 */
-	i=BN_num_bits(a)*3;
-	num=(i/10+i/1000+1)+1;
-	bn_data=(BN_ULONG *)OPENSSL_malloc((num/BN_DEC_NUM+1)*sizeof(BN_ULONG));
-	buf=(char *)OPENSSL_malloc(num+3);
-	if ((buf == NULL) || (bn_data == NULL))
-		{
-		BNerr(BN_F_BN_BN2DEC,ERR_R_MALLOC_FAILURE);
-		goto err;
-		}
-	if ((t=BN_dup(a)) == NULL) goto err;
+{
+    int i = 0, num, ok = 0;
+    char *buf = NULL;
+    char *p;
+    BIGNUM *t = NULL;
+    BN_ULONG *bn_data = NULL, *lp;
+
+    /*-
+     * get an upper bound for the length of the decimal integer
+     * num <= (BN_num_bits(a) + 1) * log(2)
+     *     <= 3 * BN_num_bits(a) * 0.1001 + log(2) + 1     (rounding error)
+     *     <= BN_num_bits(a)/10 + BN_num_bits/1000 + 1 + 1
+     */
+    i = BN_num_bits(a) * 3;
+    num = (i / 10 + i / 1000 + 1) + 1;
+    bn_data =
+        (BN_ULONG *)OPENSSL_malloc((num / BN_DEC_NUM + 1) * sizeof(BN_ULONG));
+    buf = (char *)OPENSSL_malloc(num + 3);
+    if ((buf == NULL) || (bn_data == NULL)) {
+        BNerr(BN_F_BN_BN2DEC, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    if ((t = BN_dup(a)) == NULL)
+        goto err;
 
 #define BUF_REMAIN (num+3 - (size_t)(p - buf))
-	p=buf;
-	lp=bn_data;
-	if (BN_is_zero(t))
-		{
-		*(p++)='0';
-		*(p++)='\0';
-		}
-	else
-		{
-		if (BN_is_negative(t))
-			*p++ = '-';
-
-		i=0;
-		while (!BN_is_zero(t))
-			{
-			*lp=BN_div_word(t,BN_DEC_CONV);
-			lp++;
-			}
-		lp--;
-		/* We now have a series of blocks, BN_DEC_NUM chars
-		 * in length, where the last one needs truncation.
-		 * The blocks need to be reversed in order. */
-		BIO_snprintf(p,BUF_REMAIN,BN_DEC_FMT1,*lp);
-		while (*p) p++;
-		while (lp != bn_data)
-			{
-			lp--;
-			BIO_snprintf(p,BUF_REMAIN,BN_DEC_FMT2,*lp);
-			while (*p) p++;
-			}
-		}
-	ok = 1;
-err:
-	if (bn_data != NULL) OPENSSL_free(bn_data);
-	if (t != NULL) BN_free(t);
-	if (!ok && buf)
-		{
-		OPENSSL_free(buf);
-		buf = NULL;
-		}
-
-	return(buf);
-	}
+    p = buf;
+    lp = bn_data;
+    if (BN_is_zero(t)) {
+        *(p++) = '0';
+        *(p++) = '\0';
+    } else {
+        if (BN_is_negative(t))
+            *p++ = '-';
+
+        i = 0;
+        while (!BN_is_zero(t)) {
+            *lp = BN_div_word(t, BN_DEC_CONV);
+            lp++;
+        }
+        lp--;
+        /*
+         * We now have a series of blocks, BN_DEC_NUM chars in length, where
+         * the last one needs truncation. The blocks need to be reversed in
+         * order.
+         */
+        BIO_snprintf(p, BUF_REMAIN, BN_DEC_FMT1, *lp);
+        while (*p)
+            p++;
+        while (lp != bn_data) {
+            lp--;
+            BIO_snprintf(p, BUF_REMAIN, BN_DEC_FMT2, *lp);
+            while (*p)
+                p++;
+        }
+    }
+    ok = 1;
+ err:
+    if (bn_data != NULL)
+        OPENSSL_free(bn_data);
+    if (t != NULL)
+        BN_free(t);
+    if (!ok && buf) {
+        OPENSSL_free(buf);
+        buf = NULL;
+    }
+
+    return (buf);
+}
 
 int BN_hex2bn(BIGNUM **bn, const char *a)
-	{
-	BIGNUM *ret=NULL;
-	BN_ULONG l=0;
-	int neg=0,h,m,i,j,k,c;
-	int num;
-
-	if ((a == NULL) || (*a == '\0')) return(0);
-
-	if (*a == '-') { neg=1; a++; }
-
-	for (i=0; isxdigit((unsigned char) a[i]); i++)
-		;
-
-	num=i+neg;
-	if (bn == NULL) return(num);
-
-	/* a is the start of the hex digits, and it is 'i' long */
-	if (*bn == NULL)
-		{
-		if ((ret=BN_new()) == NULL) return(0);
-		}
-	else
-		{
-		ret= *bn;
-		BN_zero(ret);
-		}
-
-	/* i is the number of hex digests; */
-	if (bn_expand(ret,i*4) == NULL) goto err;
-
-	j=i; /* least significant 'hex' */
-	m=0;
-	h=0;
-	while (j > 0)
-		{
-		m=((BN_BYTES*2) <= j)?(BN_BYTES*2):j;
-		l=0;
-		for (;;)
-			{
-			c=a[j-m];
-			if ((c >= '0') && (c <= '9')) k=c-'0';
-			else if ((c >= 'a') && (c <= 'f')) k=c-'a'+10;
-			else if ((c >= 'A') && (c <= 'F')) k=c-'A'+10;
-			else k=0; /* paranoia */
-			l=(l<<4)|k;
-
-			if (--m <= 0)
-				{
-				ret->d[h++]=l;
-				break;
-				}
-			}
-		j-=(BN_BYTES*2);
-		}
-	ret->top=h;
-	bn_correct_top(ret);
-	ret->neg=neg;
-
-	*bn=ret;
-	bn_check_top(ret);
-	return(num);
-err:
-	if (*bn == NULL) BN_free(ret);
-	return(0);
-	}
+{
+    BIGNUM *ret = NULL;
+    BN_ULONG l = 0;
+    int neg = 0, h, m, i, j, k, c;
+    int num;
+
+    if ((a == NULL) || (*a == '\0'))
+        return (0);
+
+    if (*a == '-') {
+        neg = 1;
+        a++;
+    }
+
+    for (i = 0; i <= (INT_MAX/4) && isxdigit((unsigned char)a[i]); i++)
+        continue;
+
+    if (i > INT_MAX/4)
+        goto err;
+
+    num = i + neg;
+    if (bn == NULL)
+        return (num);
+
+    /* a is the start of the hex digits, and it is 'i' long */
+    if (*bn == NULL) {
+        if ((ret = BN_new()) == NULL)
+            return (0);
+    } else {
+        ret = *bn;
+        BN_zero(ret);
+    }
+
+    /* i is the number of hex digits */
+    if (bn_expand(ret, i * 4) == NULL)
+        goto err;
+
+    j = i;                      /* least significant 'hex' */
+    m = 0;
+    h = 0;
+    while (j > 0) {
+        m = ((BN_BYTES * 2) <= j) ? (BN_BYTES * 2) : j;
+        l = 0;
+        for (;;) {
+            c = a[j - m];
+            if ((c >= '0') && (c <= '9'))
+                k = c - '0';
+            else if ((c >= 'a') && (c <= 'f'))
+                k = c - 'a' + 10;
+            else if ((c >= 'A') && (c <= 'F'))
+                k = c - 'A' + 10;
+            else
+                k = 0;          /* paranoia */
+            l = (l << 4) | k;
+
+            if (--m <= 0) {
+                ret->d[h++] = l;
+                break;
+            }
+        }
+        j -= (BN_BYTES * 2);
+    }
+    ret->top = h;
+    bn_correct_top(ret);
+    ret->neg = neg;
+
+    *bn = ret;
+    bn_check_top(ret);
+    return (num);
+ err:
+    if (*bn == NULL)
+        BN_free(ret);
+    return (0);
+}
 
 int BN_dec2bn(BIGNUM **bn, const char *a)
-	{
-	BIGNUM *ret=NULL;
-	BN_ULONG l=0;
-	int neg=0,i,j;
-	int num;
-
-	if ((a == NULL) || (*a == '\0')) return(0);
-	if (*a == '-') { neg=1; a++; }
-
-	for (i=0; isdigit((unsigned char) a[i]); i++)
-		;
-
-	num=i+neg;
-	if (bn == NULL) return(num);
-
-	/* a is the start of the digits, and it is 'i' long.
-	 * We chop it into BN_DEC_NUM digits at a time */
-	if (*bn == NULL)
-		{
-		if ((ret=BN_new()) == NULL) return(0);
-		}
-	else
-		{
-		ret= *bn;
-		BN_zero(ret);
-		}
-
-	/* i is the number of digests, a bit of an over expand; */
-	if (bn_expand(ret,i*4) == NULL) goto err;
-
-	j=BN_DEC_NUM-(i%BN_DEC_NUM);
-	if (j == BN_DEC_NUM) j=0;
-	l=0;
-	while (*a)
-		{
-		l*=10;
-		l+= *a-'0';
-		a++;
-		if (++j == BN_DEC_NUM)
-			{
-			BN_mul_word(ret,BN_DEC_CONV);
-			BN_add_word(ret,l);
-			l=0;
-			j=0;
-			}
-		}
-	ret->neg=neg;
-
-	bn_correct_top(ret);
-	*bn=ret;
-	bn_check_top(ret);
-	return(num);
-err:
-	if (*bn == NULL) BN_free(ret);
-	return(0);
-	}
+{
+    BIGNUM *ret = NULL;
+    BN_ULONG l = 0;
+    int neg = 0, i, j;
+    int num;
+
+    if ((a == NULL) || (*a == '\0'))
+        return (0);
+    if (*a == '-') {
+        neg = 1;
+        a++;
+    }
+
+    for (i = 0; i <= (INT_MAX/4) && isdigit((unsigned char)a[i]); i++)
+        continue;
+
+    if (i > INT_MAX/4)
+        goto err;
+
+    num = i + neg;
+    if (bn == NULL)
+        return (num);
+
+    /*
+     * a is the start of the digits, and it is 'i' long. We chop it into
+     * BN_DEC_NUM digits at a time
+     */
+    if (*bn == NULL) {
+        if ((ret = BN_new()) == NULL)
+            return (0);
+    } else {
+        ret = *bn;
+        BN_zero(ret);
+    }
+
+    /* i is the number of digits, a bit of an over expand */
+    if (bn_expand(ret, i * 4) == NULL)
+        goto err;
+
+    j = BN_DEC_NUM - (i % BN_DEC_NUM);
+    if (j == BN_DEC_NUM)
+        j = 0;
+    l = 0;
+    while (*a) {
+        l *= 10;
+        l += *a - '0';
+        a++;
+        if (++j == BN_DEC_NUM) {
+            BN_mul_word(ret, BN_DEC_CONV);
+            BN_add_word(ret, l);
+            l = 0;
+            j = 0;
+        }
+    }
+    ret->neg = neg;
+
+    bn_correct_top(ret);
+    *bn = ret;
+    bn_check_top(ret);
+    return (num);
+ err:
+    if (*bn == NULL)
+        BN_free(ret);
+    return (0);
+}
 
 int BN_asc2bn(BIGNUM **bn, const char *a)
-	{
-	const char *p = a;
-	if (*p == '-')
-		p++;
-
-	if (p[0] == '0' && (p[1] == 'X' || p[1] == 'x'))
-		{		
-		if (!BN_hex2bn(bn, p + 2))
-			return 0;
-		}
-	else
-		{
-		if (!BN_dec2bn(bn, p))
-			return 0;
-		}
-	if (*a == '-')
-		(*bn)->neg = 1;
-	return 1;
-	}
+{
+    const char *p = a;
+    if (*p == '-')
+        p++;
+
+    if (p[0] == '0' && (p[1] == 'X' || p[1] == 'x')) {
+        if (!BN_hex2bn(bn, p + 2))
+            return 0;
+    } else {
+        if (!BN_dec2bn(bn, p))
+            return 0;
+    }
+    if (*a == '-')
+        (*bn)->neg = 1;
+    return 1;
+}
 
 #ifndef OPENSSL_NO_BIO
-#ifndef OPENSSL_NO_FP_API
+# ifndef OPENSSL_NO_FP_API
 int BN_print_fp(FILE *fp, const BIGNUM *a)
-	{
-	BIO *b;
-	int ret;
-
-	if ((b=BIO_new(BIO_s_file())) == NULL)
-		return(0);
-	BIO_set_fp(b,fp,BIO_NOCLOSE);
-	ret=BN_print(b,a);
-	BIO_free(b);
-	return(ret);
-	}
-#endif
+{
+    BIO *b;
+    int ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL)
+        return (0);
+    BIO_set_fp(b, fp, BIO_NOCLOSE);
+    ret = BN_print(b, a);
+    BIO_free(b);
+    return (ret);
+}
+# endif
 
 int BN_print(BIO *bp, const BIGNUM *a)
-	{
-	int i,j,v,z=0;
-	int ret=0;
-
-	if ((a->neg) && (BIO_write(bp,"-",1) != 1)) goto end;
-	if (BN_is_zero(a) && (BIO_write(bp,"0",1) != 1)) goto end;
-	for (i=a->top-1; i >=0; i--)
-		{
-		for (j=BN_BITS2-4; j >= 0; j-=4)
-			{
-			/* strip leading zeros */
-			v=((int)(a->d[i]>>(long)j))&0x0f;
-			if (z || (v != 0))
-				{
-				if (BIO_write(bp,&(Hex[v]),1) != 1)
-					goto end;
-				z=1;
-				}
-			}
-		}
-	ret=1;
-end:
-	return(ret);
-	}
+{
+    int i, j, v, z = 0;
+    int ret = 0;
+
+    if ((a->neg) && (BIO_write(bp, "-", 1) != 1))
+        goto end;
+    if (BN_is_zero(a) && (BIO_write(bp, "0", 1) != 1))
+        goto end;
+    for (i = a->top - 1; i >= 0; i--) {
+        for (j = BN_BITS2 - 4; j >= 0; j -= 4) {
+            /* strip leading zeros */
+            v = ((int)(a->d[i] >> (long)j)) & 0x0f;
+            if (z || (v != 0)) {
+                if (BIO_write(bp, &(Hex[v]), 1) != 1)
+                    goto end;
+                z = 1;
+            }
+        }
+    }
+    ret = 1;
+ end:
+    return (ret);
+}
 #endif
 
 char *BN_options(void)
-	{
-	static int init=0;
-	static char data[16];
+{
+    static int init = 0;
+    static char data[16];
 
-	if (!init)
-		{
-		init++;
+    if (!init) {
+        init++;
 #ifdef BN_LLONG
-		BIO_snprintf(data,sizeof data,"bn(%d,%d)",
-			     (int)sizeof(BN_ULLONG)*8,(int)sizeof(BN_ULONG)*8);
+        BIO_snprintf(data, sizeof data, "bn(%d,%d)",
+                     (int)sizeof(BN_ULLONG) * 8, (int)sizeof(BN_ULONG) * 8);
 #else
-		BIO_snprintf(data,sizeof data,"bn(%d,%d)",
-			     (int)sizeof(BN_ULONG)*8,(int)sizeof(BN_ULONG)*8);
+        BIO_snprintf(data, sizeof data, "bn(%d,%d)",
+                     (int)sizeof(BN_ULONG) * 8, (int)sizeof(BN_ULONG) * 8);
 #endif
-		}
-	return(data);
-	}
+    }
+    return (data);
+}