update

crypto/buffer/Makefile

@@ -17,8 +17,8 @@ TEST=
 APPS=
 
 LIB=$(TOP)/libcrypto.a
-LIBSRC= buffer.c buf_err.c
-LIBOBJ= buffer.o buf_err.o
+LIBSRC= buffer.c buf_str.c buf_err.c
+LIBOBJ= buffer.o buf_str.o buf_err.o
 
 SRC= $(LIBSRC)
 
@@ -61,6 +61,8 @@ tests:
 lint:
 	lint -DLINT $(INCLUDES) $(SRC)>fluff
 
+update: depend
+
 depend:
 	@[ -n "$(MAKEDEPEND)" ] # should be set by upper Makefile...
 	$(MAKEDEPEND) -- $(CFLAG) $(INCLUDES) $(DEPFLAG) -- $(PROGS) $(LIBSRC)
@@ -81,6 +83,13 @@ buf_err.o: ../../include/openssl/opensslconf.h ../../include/openssl/opensslv.h
 buf_err.o: ../../include/openssl/ossl_typ.h ../../include/openssl/safestack.h
 buf_err.o: ../../include/openssl/stack.h ../../include/openssl/symhacks.h
 buf_err.o: buf_err.c
+buf_str.o: ../../e_os.h ../../include/openssl/bio.h
+buf_str.o: ../../include/openssl/buffer.h ../../include/openssl/crypto.h
+buf_str.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h
+buf_str.o: ../../include/openssl/lhash.h ../../include/openssl/opensslconf.h
+buf_str.o: ../../include/openssl/opensslv.h ../../include/openssl/ossl_typ.h
+buf_str.o: ../../include/openssl/safestack.h ../../include/openssl/stack.h
+buf_str.o: ../../include/openssl/symhacks.h ../cryptlib.h buf_str.c
 buffer.o: ../../e_os.h ../../include/openssl/bio.h
 buffer.o: ../../include/openssl/buffer.h ../../include/openssl/crypto.h
 buffer.o: ../../include/openssl/e_os2.h ../../include/openssl/err.h

crypto/buffer/buf_err.c

@@ -7,7 +7,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -53,7 +53,8 @@
  *
  */
 
-/* NOTE: this file was auto generated by the mkerr.pl script: any changes
+/*
+ * NOTE: this file was auto generated by the mkerr.pl script: any changes
  * made to it will be overwritten when the script next updates this file,
  * only reason strings will be preserved.
  */
@@ -65,35 +66,32 @@
 /* BEGIN ERROR CODES */
 #ifndef OPENSSL_NO_ERR
 
-#define ERR_FUNC(func) ERR_PACK(ERR_LIB_BUF,func,0)
-#define ERR_REASON(reason) ERR_PACK(ERR_LIB_BUF,0,reason)
+# define ERR_FUNC(func) ERR_PACK(ERR_LIB_BUF,func,0)
+# define ERR_REASON(reason) ERR_PACK(ERR_LIB_BUF,0,reason)
 
-static ERR_STRING_DATA BUF_str_functs[]=
-	{
-{ERR_FUNC(BUF_F_BUF_MEMDUP),	"BUF_memdup"},
-{ERR_FUNC(BUF_F_BUF_MEM_GROW),	"BUF_MEM_grow"},
-{ERR_FUNC(BUF_F_BUF_MEM_GROW_CLEAN),	"BUF_MEM_grow_clean"},
-{ERR_FUNC(BUF_F_BUF_MEM_NEW),	"BUF_MEM_new"},
-{ERR_FUNC(BUF_F_BUF_STRDUP),	"BUF_strdup"},
-{ERR_FUNC(BUF_F_BUF_STRNDUP),	"BUF_strndup"},
-{0,NULL}
-	};
+static ERR_STRING_DATA BUF_str_functs[] = {
+    {ERR_FUNC(BUF_F_BUF_MEMDUP), "BUF_memdup"},
+    {ERR_FUNC(BUF_F_BUF_MEM_GROW), "BUF_MEM_grow"},
+    {ERR_FUNC(BUF_F_BUF_MEM_GROW_CLEAN), "BUF_MEM_grow_clean"},
+    {ERR_FUNC(BUF_F_BUF_MEM_NEW), "BUF_MEM_new"},
+    {ERR_FUNC(BUF_F_BUF_STRDUP), "BUF_strdup"},
+    {ERR_FUNC(BUF_F_BUF_STRNDUP), "BUF_strndup"},
+    {0, NULL}
+};
 
-static ERR_STRING_DATA BUF_str_reasons[]=
-	{
-{0,NULL}
-	};
+static ERR_STRING_DATA BUF_str_reasons[] = {
+    {0, NULL}
+};
 
 #endif
 
 void ERR_load_BUF_strings(void)
-	{
+{
 #ifndef OPENSSL_NO_ERR
 
-	if (ERR_func_error_string(BUF_str_functs[0].error) == NULL)
-		{
-		ERR_load_strings(0,BUF_str_functs);
-		ERR_load_strings(0,BUF_str_reasons);
-		}
+    if (ERR_func_error_string(BUF_str_functs[0].error) == NULL) {
+        ERR_load_strings(0, BUF_str_functs);
+        ERR_load_strings(0, BUF_str_reasons);
+    }
 #endif
-	}
+}

crypto/buffer/buf_str.c

@@ -0,0 +1,130 @@
+/* crypto/buffer/buffer.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * 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:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     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
+ *    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
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/buffer.h>
+
+size_t BUF_strnlen(const char *str, size_t maxlen)
+{
+    const char *p;
+
+    for (p = str; maxlen-- != 0 && *p != '\0'; ++p) ;
+
+    return p - str;
+}
+
+char *BUF_strdup(const char *str)
+{
+    if (str == NULL)
+        return (NULL);
+    return BUF_strndup(str, strlen(str));
+}
+
+char *BUF_strndup(const char *str, size_t siz)
+{
+    char *ret;
+
+    if (str == NULL)
+        return (NULL);
+
+    siz = BUF_strnlen(str, siz);
+
+    ret = OPENSSL_malloc(siz + 1);
+    if (ret == NULL) {
+        BUFerr(BUF_F_BUF_STRNDUP, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    BUF_strlcpy(ret, str, siz + 1);
+    return (ret);
+}
+
+void *BUF_memdup(const void *data, size_t siz)
+{
+    void *ret;
+
+    if (data == NULL)
+        return (NULL);
+
+    ret = OPENSSL_malloc(siz);
+    if (ret == NULL) {
+        BUFerr(BUF_F_BUF_MEMDUP, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    return memcpy(ret, data, siz);
+}
+
+size_t BUF_strlcpy(char *dst, const char *src, size_t size)
+{
+    size_t l = 0;
+    for (; size > 1 && *src; size--) {
+        *dst++ = *src++;
+        l++;
+    }
+    if (size)
+        *dst = '\0';
+    return l + strlen(src);
+}
+
+size_t BUF_strlcat(char *dst, const char *src, size_t size)
+{
+    size_t l = 0;
+    for (; size > 0 && *dst; size--, dst++)
+        l++;
+    return l + BUF_strlcpy(dst, src, size);
+}

crypto/buffer/buffer.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
@@ -60,185 +60,128 @@
 #include "cryptlib.h"
 #include <openssl/buffer.h>
 
-BUF_MEM *BUF_MEM_new(void)
-	{
-	BUF_MEM *ret;
+/*
+ * LIMIT_BEFORE_EXPANSION is the maximum n such that (n+3)/3*4 < 2**31. That
+ * function is applied in several functions in this file and this limit
+ * ensures that the result fits in an int.
+ */
+#define LIMIT_BEFORE_EXPANSION 0x5ffffffc
 
-	ret=OPENSSL_malloc(sizeof(BUF_MEM));
-	if (ret == NULL)
-		{
-		BUFerr(BUF_F_BUF_MEM_NEW,ERR_R_MALLOC_FAILURE);
-		return(NULL);
-		}
-	ret->length=0;
-	ret->max=0;
-	ret->data=NULL;
-	return(ret);
-	}
+BUF_MEM *BUF_MEM_new(void)
+{
+    BUF_MEM *ret;
+
+    ret = OPENSSL_malloc(sizeof(BUF_MEM));
+    if (ret == NULL) {
+        BUFerr(BUF_F_BUF_MEM_NEW, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    ret->length = 0;
+    ret->max = 0;
+    ret->data = NULL;
+    return (ret);
+}
 
 void BUF_MEM_free(BUF_MEM *a)
-	{
-	if(a == NULL)
-	    return;
+{
+    if (a == NULL)
+        return;
 
-	if (a->data != NULL)
-		{
-		memset(a->data,0,(unsigned int)a->max);
-		OPENSSL_free(a->data);
-		}
-	OPENSSL_free(a);
-	}
+    if (a->data != NULL) {
+        OPENSSL_cleanse(a->data, a->max);
+        OPENSSL_free(a->data);
+    }
+    OPENSSL_free(a);
+}
 
 int BUF_MEM_grow(BUF_MEM *str, size_t len)
-	{
-	char *ret;
-	size_t n;
+{
+    char *ret;
+    size_t n;
 
-	if (str->length >= len)
-		{
-		str->length=len;
-		return(len);
-		}
-	if (str->max >= len)
-		{
-		memset(&str->data[str->length],0,len-str->length);
-		str->length=len;
-		return(len);
-		}
-	n=(len+3)/3*4;
-	if (str->data == NULL)
-		ret=OPENSSL_malloc(n);
-	else
-		ret=OPENSSL_realloc(str->data,n);
-	if (ret == NULL)
-		{
-		BUFerr(BUF_F_BUF_MEM_GROW,ERR_R_MALLOC_FAILURE);
-		len=0;
-		}
-	else
-		{
-		str->data=ret;
-		str->max=n;
-		memset(&str->data[str->length],0,len-str->length);
-		str->length=len;
-		}
-	return(len);
-	}
+    if (str->length >= len) {
+        str->length = len;
+        return (len);
+    }
+    if (str->max >= len) {
+        memset(&str->data[str->length], 0, len - str->length);
+        str->length = len;
+        return (len);
+    }
+    /* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
+    if (len > LIMIT_BEFORE_EXPANSION) {
+        BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    n = (len + 3) / 3 * 4;
+    if (str->data == NULL)
+        ret = OPENSSL_malloc(n);
+    else
+        ret = OPENSSL_realloc(str->data, n);
+    if (ret == NULL) {
+        BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
+        len = 0;
+    } else {
+        str->data = ret;
+        str->max = n;
+        memset(&str->data[str->length], 0, len - str->length);
+        str->length = len;
+    }
+    return (len);
+}
 
 int BUF_MEM_grow_clean(BUF_MEM *str, size_t len)
-	{
-	char *ret;
-	size_t n;
+{
+    char *ret;
+    size_t n;
 
-	if (str->length >= len)
-		{
-		memset(&str->data[len],0,str->length-len);
-		str->length=len;
-		return(len);
-		}
-	if (str->max >= len)
-		{
-		memset(&str->data[str->length],0,len-str->length);
-		str->length=len;
-		return(len);
-		}
-	n=(len+3)/3*4;
-	if (str->data == NULL)
-		ret=OPENSSL_malloc(n);
-	else
-		ret=OPENSSL_realloc_clean(str->data,str->max,n);
-	if (ret == NULL)
-		{
-		BUFerr(BUF_F_BUF_MEM_GROW_CLEAN,ERR_R_MALLOC_FAILURE);
-		len=0;
-		}
-	else
-		{
-		str->data=ret;
-		str->max=n;
-		memset(&str->data[str->length],0,len-str->length);
-		str->length=len;
-		}
-	return(len);
-	}
+    if (str->length >= len) {
+        memset(&str->data[len], 0, str->length - len);
+        str->length = len;
+        return (len);
+    }
+    if (str->max >= len) {
+        memset(&str->data[str->length], 0, len - str->length);
+        str->length = len;
+        return (len);
+    }
+    /* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
+    if (len > LIMIT_BEFORE_EXPANSION) {
+        BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    n = (len + 3) / 3 * 4;
+    if (str->data == NULL)
+        ret = OPENSSL_malloc(n);
+    else
+        ret = OPENSSL_realloc_clean(str->data, str->max, n);
+    if (ret == NULL) {
+        BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
+        len = 0;
+    } else {
+        str->data = ret;
+        str->max = n;
+        memset(&str->data[str->length], 0, len - str->length);
+        str->length = len;
+    }
+    return (len);
+}
 
-char *BUF_strdup(const char *str)
-	{
-	if (str == NULL) return(NULL);
-	return BUF_strndup(str, strlen(str));
-	}
-
-char *BUF_strndup(const char *str, size_t siz)
-	{
-	char *ret;
-
-	if (str == NULL) return(NULL);
-
-	ret=OPENSSL_malloc(siz+1);
-	if (ret == NULL) 
-		{
-		BUFerr(BUF_F_BUF_STRNDUP,ERR_R_MALLOC_FAILURE);
-		return(NULL);
-		}
-	BUF_strlcpy(ret,str,siz+1);
-	return(ret);
-	}
-
-void *BUF_memdup(const void *data, size_t siz)
-	{
-	void *ret;
-
-	if (data == NULL) return(NULL);
-
-	ret=OPENSSL_malloc(siz);
-	if (ret == NULL) 
-		{
-		BUFerr(BUF_F_BUF_MEMDUP,ERR_R_MALLOC_FAILURE);
-		return(NULL);
-		}
-	return memcpy(ret, data, siz);
-	}	
-
-size_t BUF_strlcpy(char *dst, const char *src, size_t size)
-	{
-	size_t l = 0;
-	for(; size > 1 && *src; size--)
-		{
-		*dst++ = *src++;
-		l++;
-		}
-	if (size)
-		*dst = '\0';
-	return l + strlen(src);
-	}
-
-size_t BUF_strlcat(char *dst, const char *src, size_t size)
-	{
-	size_t l = 0;
-	for(; size > 0 && *dst; size--, dst++)
-		l++;
-	return l + BUF_strlcpy(dst, src, size);
-	}
-
-void BUF_reverse(unsigned char *out, unsigned char *in, size_t size)
-	{
-	size_t i;
-	if (in)
-		{
-		out += size - 1;
-		for (i = 0; i < size; i++)
-			*in++ = *out--;
-		}
-	else
-		{
-		unsigned char *q;
-		char c;
-		q = out + size - 1;
-		for (i = 0; i < size/2; i++)
-			{
-			c = *q;
-			*q-- = *out;
-			*out++ = c;
-			}
-		}
-	}
+void BUF_reverse(unsigned char *out, const unsigned char *in, size_t size)
+{
+    size_t i;
+    if (in) {
+        out += size - 1;
+        for (i = 0; i < size; i++)
+            *out-- = *in++;
+    } else {
+        unsigned char *q;
+        char c;
+        q = out + size - 1;
+        for (i = 0; i < size / 2; i++) {
+            c = *q;
+            *q-- = *out;
+            *out++ = c;
+        }
+    }
+}

crypto/buffer/buffer.h

@@ -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
@@ -57,46 +57,46 @@
  */
 
 #ifndef HEADER_BUFFER_H
-#define HEADER_BUFFER_H
+# define HEADER_BUFFER_H
 
-#include <openssl/ossl_typ.h>
+# include <openssl/ossl_typ.h>
 
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
-#include <stddef.h>
+# include <stddef.h>
 
-#if !defined(NO_SYS_TYPES_H)
-#include <sys/types.h>
-#endif
+# if !defined(NO_SYS_TYPES_H)
+#  include <sys/types.h>
+# endif
 
 /* Already declared in ossl_typ.h */
 /* typedef struct buf_mem_st BUF_MEM; */
 
-struct buf_mem_st
-	{
-	size_t length;	/* current number of bytes */
-	char *data;
-	size_t max;	/* size of buffer */
-	};
+struct buf_mem_st {
+    size_t length;              /* current number of bytes */
+    char *data;
+    size_t max;                 /* size of buffer */
+};
 
 BUF_MEM *BUF_MEM_new(void);
-void	BUF_MEM_free(BUF_MEM *a);
-int	BUF_MEM_grow(BUF_MEM *str, size_t len);
-int	BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
-char *	BUF_strdup(const char *str);
-char *	BUF_strndup(const char *str, size_t siz);
-void *	BUF_memdup(const void *data, size_t siz);
-void	BUF_reverse(unsigned char *out, unsigned char *in, size_t siz);
+void BUF_MEM_free(BUF_MEM *a);
+int BUF_MEM_grow(BUF_MEM *str, size_t len);
+int BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
+size_t BUF_strnlen(const char *str, size_t maxlen);
+char *BUF_strdup(const char *str);
+char *BUF_strndup(const char *str, size_t siz);
+void *BUF_memdup(const void *data, size_t siz);
+void BUF_reverse(unsigned char *out, const unsigned char *in, size_t siz);
 
 /* safe string functions */
-size_t BUF_strlcpy(char *dst,const char *src,size_t siz);
-size_t BUF_strlcat(char *dst,const char *src,size_t siz);
-
+size_t BUF_strlcpy(char *dst, const char *src, size_t siz);
+size_t BUF_strlcat(char *dst, const char *src, size_t siz);
 
 /* BEGIN ERROR CODES */
-/* The following lines are auto generated by the script mkerr.pl. Any changes
+/*
+ * The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
  */
 void ERR_load_BUF_strings(void);
@@ -104,12 +104,12 @@ void ERR_load_BUF_strings(void);
 /* Error codes for the BUF functions. */
 
 /* Function codes. */
-#define BUF_F_BUF_MEMDUP				 103
-#define BUF_F_BUF_MEM_GROW				 100
-#define BUF_F_BUF_MEM_GROW_CLEAN			 105
-#define BUF_F_BUF_MEM_NEW				 101
-#define BUF_F_BUF_STRDUP				 102
-#define BUF_F_BUF_STRNDUP				 104
+# define BUF_F_BUF_MEMDUP                                 103
+# define BUF_F_BUF_MEM_GROW                               100
+# define BUF_F_BUF_MEM_GROW_CLEAN                         105
+# define BUF_F_BUF_MEM_NEW                                101
+# define BUF_F_BUF_STRDUP                                 102
+# define BUF_F_BUF_STRNDUP                                104
 
 /* Reason codes. */