Import of old SSLeay release: SSLeay 0.8.1b

1 files changed, 355 insertions, 0 deletions

diff --git a/crypto/mem.c b/crypto/mem.c
new file mode 100644
index 0000000000..4274cc938a
--- /dev/null
+++ b/crypto/mem.c
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+/* crypto/mem.c */
+/* Copyright (C) 1995-1997 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 <stdlib.h>
+#include "buffer.h"
+#include "bio.h"
+#include "lhash.h"
+#include "cryptlib.h"
+
+static int mh_mode=CRYPTO_MEM_CHECK_OFF;
+static unsigned long order=0;
+
+static LHASH *mh=NULL;
+
+typedef struct mem_st
+	{
+	char *addr;
+	int num;
+	char *file;
+	int line;
+	unsigned long order;
+	} MEM;
+
+int CRYPTO_mem_ctrl(mode)
+int mode;
+	{
+	int ret=mh_mode;
+
+	CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
+	switch (mode)
+		{
+	case CRYPTO_MEM_CHECK_ON:
+		mh_mode|=CRYPTO_MEM_CHECK_ON;
+		break;
+	case CRYPTO_MEM_CHECK_OFF:
+		mh_mode&= ~CRYPTO_MEM_CHECK_ON;
+		break;
+	default:
+		break;
+		}
+	CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+	return(ret);
+	}
+
+static int mem_cmp(a,b)
+MEM *a,*b;
+	{
+	return(a->addr - b->addr);
+	}
+
+static unsigned long mem_hash(a)
+MEM *a;
+	{
+	unsigned long ret;
+
+	ret=(unsigned long)a->addr;
+
+	ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
+	return(ret);
+	}
+
+static char *(*malloc_func)()=	(char *(*)())malloc;
+static char *(*realloc_func)()=	(char *(*)())realloc;
+static void (*free_func)()=	(void (*)())free;
+
+void CRYPTO_set_mem_functions(m,r,f)
+char *(*m)();
+char *(*r)();
+void (*f)();
+	{
+	if ((m == NULL) || (r == NULL) || (f == NULL)) return;
+	malloc_func=m;
+	realloc_func=r;
+	free_func=f;
+	}
+
+void CRYPTO_get_mem_functions(m,r,f)
+char *(**m)();
+char *(**r)();
+void (**f)();
+	{
+	if (m != NULL) *m=malloc_func;
+	if (r != NULL) *r=realloc_func;
+	if (f != NULL) *f=free_func;
+	}
+
+char *CRYPTO_malloc(num)
+int num;
+	{
+	return(malloc_func(num));
+	}
+
+char *CRYPTO_realloc(str,num)
+char *str;
+int num;
+	{
+	return(realloc_func(str,num));
+	}
+
+void CRYPTO_free(str)
+char *str;
+	{
+	free_func(str);
+	}
+
+char *CRYPTO_dbg_malloc(num,file,line)
+int num;
+char *file;
+int line;
+	{
+	char *ret;
+	MEM *m;
+
+	if ((ret=malloc_func(num)) == NULL)
+		return(NULL);
+
+	if (mh_mode & CRYPTO_MEM_CHECK_ON)
+		{
+		if ((m=(MEM *)malloc(sizeof(MEM))) == NULL)
+			{
+			free(ret);
+			return(NULL);
+			}
+		CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
+		if (mh == NULL)
+			{
+			if ((mh=lh_new(mem_hash,mem_cmp)) == NULL)
+				{
+				free(ret);
+				free(m);
+				return(NULL);
+				}
+			}
+
+		m->addr=ret;
+		m->file=file;
+		m->line=line;
+		m->num=num;
+		m->order=order++;
+		if (lh_insert(mh,(char *)m) != NULL)
+			{
+			free(m);
+			free(ret);
+			/* abort(); */
+			ret=NULL;
+			}
+		CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+		}
+	return(ret);
+	}
+
+void CRYPTO_dbg_free(addr)
+char *addr;
+	{
+	MEM m,*mp;
+
+	if ((mh_mode & CRYPTO_MEM_CHECK_ON) && (mh != NULL))
+		{
+		CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
+		m.addr=addr;
+		mp=(MEM *)lh_delete(mh,(char *)&m);
+		if (mp != NULL)
+			free(mp);
+		CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+		}
+	free_func(addr);
+	}
+
+char *CRYPTO_dbg_realloc(addr,num,file,line)
+char *addr;
+int num;
+char *file;
+int line;
+	{
+	char *ret;
+	MEM m,*mp;
+
+	ret=realloc_func(addr,num);
+	if (ret == addr) return(ret);
+
+	if (mh_mode & CRYPTO_MEM_CHECK_ON)
+		{
+		if (ret == NULL) return(NULL);
+		m.addr=addr;
+		CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
+		mp=(MEM *)lh_delete(mh,(char *)&m);
+		if (mp != NULL)
+			{
+			mp->addr=ret;
+			lh_insert(mh,(char *)mp);
+			}
+		CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+		}
+	return(ret);
+	}
+
+char *CRYPTO_remalloc(a,n)
+char *a;
+int n;
+	{
+	if (a != NULL) Free(a);
+	a=(char *)Malloc(n);
+	return(a);
+	}
+
+char *CRYPTO_dbg_remalloc(a,n,file,line)
+char *a;
+int n;
+char *file;
+int line;
+	{
+	if (a != NULL) CRYPTO_dbg_free(a);
+	a=(char *)CRYPTO_dbg_malloc(n,file,line);
+	return(a);
+	}
+
+
+typedef struct mem_leak_st
+	{
+	BIO *bio;
+	int chunks;
+	long bytes;
+	} MEM_LEAK;
+
+static void print_leak(m,l)
+MEM *m;
+MEM_LEAK *l;
+	{
+	char buf[128];
+
+	sprintf(buf,"%5ld file=%s, line=%d, number=%d, address=%08lX\n",
+		m->order,m->file,m->line,m->num,(long)m->addr);
+	BIO_puts(l->bio,buf);
+	l->chunks++;
+	l->bytes+=m->num;
+	}
+
+void CRYPTO_mem_leaks(b)
+BIO *b;
+	{
+	MEM_LEAK ml;
+	char buf[80];
+
+	if (mh == NULL) return;
+	ml.bio=b;
+	ml.bytes=0;
+	ml.chunks=0;
+	CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
+	lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
+	CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+	if (ml.chunks != 0)
+		{
+		sprintf(buf,"%ld bytes leaked in %d chunks\n",
+			ml.bytes,ml.chunks);
+		BIO_puts(b,buf);
+		}
+	/*
+	lh_stats_bio(mh,b);
+        lh_node_stats_bio(mh,b);
+        lh_node_usage_stats_bio(mh,b);
+	*/
+	}
+
+static void (*mem_cb)()=NULL;
+
+static void cb_leak(m,cb)
+MEM *m;
+char *cb;
+	{
+	void (*mem_callback)()=(void (*)())cb;
+	mem_callback(m->order,m->file,m->line,m->num,m->addr);
+	}
+
+void CRYPTO_mem_leaks_cb(cb)
+void (*cb)();
+	{
+	if (mh == NULL) return;
+	CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
+	mem_cb=cb;
+	lh_doall_arg(mh,(void (*)())cb_leak,(char *)mem_cb);
+	mem_cb=NULL;
+	CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
+	}
+
+#ifndef WIN16
+void CRYPTO_mem_leaks_fp(fp)
+FILE *fp;
+	{
+	BIO *b;
+
+	if (mh == NULL) return;
+	if ((b=BIO_new(BIO_s_file())) == NULL)
+		return;
+	BIO_set_fp(b,fp,BIO_NOCLOSE);
+	CRYPTO_mem_leaks(b);
+	BIO_free(b);
+	}
+#endif
+