1 files changed, 341 insertions, 0 deletions
diff --git a/openssl/crypto/stack/stack.c b/openssl/crypto/stack/stack.c
new file mode 100644
index 000000000..378bd7c79
--- /dev/null
+++ b/openssl/crypto/stack/stack.c
@@ -0,0 +1,341 @@
+/* crypto/stack/stack.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.]
+ */
+
+/* Code for stacks
+ * Author - Eric Young v 1.0
+ * 1.2 eay 12-Mar-97 -	Modified sk_find so that it _DOES_ return the
+ *			lowest index for the searched item.
+ *
+ * 1.1 eay - Take from netdb and added to SSLeay
+ *
+ * 1.0 eay - First version 29/07/92
+ */
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/stack.h>
+#include <openssl/objects.h>
+
+#undef MIN_NODES
+#define MIN_NODES	4
+
+const char STACK_version[]="Stack" OPENSSL_VERSION_PTEXT;
+
+#include <errno.h>
+
+int (*sk_set_cmp_func(STACK *sk, int (*c)(const char * const *,const char * const *)))
+		(const char * const *, const char * const *)
+	{
+	int (*old)(const char * const *,const char * const *)=sk->comp;
+
+	if (sk->comp != c)
+		sk->sorted=0;
+	sk->comp=c;
+
+	return old;
+	}
+
+STACK *sk_dup(STACK *sk)
+	{
+	STACK *ret;
+	char **s;
+
+	if ((ret=sk_new(sk->comp)) == NULL) goto err;
+	s=(char **)OPENSSL_realloc((char *)ret->data,
+		(unsigned int)sizeof(char *)*sk->num_alloc);
+	if (s == NULL) goto err;
+	ret->data=s;
+
+	ret->num=sk->num;
+	memcpy(ret->data,sk->data,sizeof(char *)*sk->num);
+	ret->sorted=sk->sorted;
+	ret->num_alloc=sk->num_alloc;
+	ret->comp=sk->comp;
+	return(ret);
+err:
+	if(ret)
+		sk_free(ret);
+	return(NULL);
+	}
+
+STACK *sk_new_null(void)
+	{
+	return sk_new((int (*)(const char * const *, const char * const *))0);
+	}
+
+STACK *sk_new(int (*c)(const char * const *, const char * const *))
+	{
+	STACK *ret;
+	int i;
+
+	if ((ret=(STACK *)OPENSSL_malloc(sizeof(STACK))) == NULL)
+		goto err;
+	if ((ret->data=(char **)OPENSSL_malloc(sizeof(char *)*MIN_NODES)) == NULL)
+		goto err;
+	for (i=0; i<MIN_NODES; i++)
+		ret->data[i]=NULL;
+	ret->comp=c;
+	ret->num_alloc=MIN_NODES;
+	ret->num=0;
+	ret->sorted=0;
+	return(ret);
+err:
+	if(ret)
+		OPENSSL_free(ret);
+	return(NULL);
+	}
+
+int sk_insert(STACK *st, char *data, int loc)
+	{
+	char **s;
+
+	if(st == NULL) return 0;
+	if (st->num_alloc <= st->num+1)
+		{
+		s=(char **)OPENSSL_realloc((char *)st->data,
+			(unsigned int)sizeof(char *)*st->num_alloc*2);
+		if (s == NULL)
+			return(0);
+		st->data=s;
+		st->num_alloc*=2;
+		}
+	if ((loc >= (int)st->num) || (loc < 0))
+		st->data[st->num]=data;
+	else
+		{
+		int i;
+		char **f,**t;
+
+		f=(char **)st->data;
+		t=(char **)&(st->data[1]);
+		for (i=st->num; i>=loc; i--)
+			t[i]=f[i];
+			
+#ifdef undef /* no memmove on sunos :-( */
+		memmove( (char *)&(st->data[loc+1]),
+			(char *)&(st->data[loc]),
+			sizeof(char *)*(st->num-loc));
+#endif
+		st->data[loc]=data;
+		}
+	st->num++;
+	st->sorted=0;
+	return(st->num);
+	}
+
+char *sk_delete_ptr(STACK *st, char *p)
+	{
+	int i;
+
+	for (i=0; i<st->num; i++)
+		if (st->data[i] == p)
+			return(sk_delete(st,i));
+	return(NULL);
+	}
+
+char *sk_delete(STACK *st, int loc)
+	{
+	char *ret;
+	int i,j;
+
+	if(!st || (loc < 0) || (loc >= st->num)) return NULL;
+
+	ret=st->data[loc];
+	if (loc != st->num-1)
+		{
+		j=st->num-1;
+		for (i=loc; i<j; i++)
+			st->data[i]=st->data[i+1];
+		/* In theory memcpy is not safe for this
+		 * memcpy( &(st->data[loc]),
+		 *	&(st->data[loc+1]),
+		 *	sizeof(char *)*(st->num-loc-1));
+		 */
+		}
+	st->num--;
+	return(ret);
+	}
+
+static int internal_find(STACK *st, char *data, int ret_val_options)
+	{
+	char **r;
+	int i;
+	int (*comp_func)(const void *,const void *);
+	if(st == NULL) return -1;
+
+	if (st->comp == NULL)
+		{
+		for (i=0; i<st->num; i++)
+			if (st->data[i] == data)
+				return(i);
+		return(-1);
+		}
+	sk_sort(st);
+	if (data == NULL) return(-1);
+	/* This (and the "qsort" below) are the two places in OpenSSL
+	 * where we need to convert from our standard (type **,type **)
+	 * compare callback type to the (void *,void *) type required by
+	 * bsearch. However, the "data" it is being called(back) with are
+	 * not (type *) pointers, but the *pointers* to (type *) pointers,
+	 * so we get our extra level of pointer dereferencing that way. */
+	comp_func=(int (*)(const void *,const void *))(st->comp);
+	r=(char **)OBJ_bsearch_ex((char *)&data,(char *)st->data,
+		st->num,sizeof(char *),comp_func,ret_val_options);
+	if (r == NULL) return(-1);
+	return((int)(r-st->data));
+	}
+
+int sk_find(STACK *st, char *data)
+	{
+	return internal_find(st, data, OBJ_BSEARCH_FIRST_VALUE_ON_MATCH);
+	}
+int sk_find_ex(STACK *st, char *data)
+	{
+	return internal_find(st, data, OBJ_BSEARCH_VALUE_ON_NOMATCH);
+	}
+
+int sk_push(STACK *st, char *data)
+	{
+	return(sk_insert(st,data,st->num));
+	}
+
+int sk_unshift(STACK *st, char *data)
+	{
+	return(sk_insert(st,data,0));
+	}
+
+char *sk_shift(STACK *st)
+	{
+	if (st == NULL) return(NULL);
+	if (st->num <= 0) return(NULL);
+	return(sk_delete(st,0));
+	}
+
+char *sk_pop(STACK *st)
+	{
+	if (st == NULL) return(NULL);
+	if (st->num <= 0) return(NULL);
+	return(sk_delete(st,st->num-1));
+	}
+
+void sk_zero(STACK *st)
+	{
+	if (st == NULL) return;
+	if (st->num <= 0) return;
+	memset((char *)st->data,0,sizeof(st->data)*st->num);
+	st->num=0;
+	}
+
+void sk_pop_free(STACK *st, void (*func)(void *))
+	{
+	int i;
+
+	if (st == NULL) return;
+	for (i=0; i<st->num; i++)
+		if (st->data[i] != NULL)
+			func(st->data[i]);
+	sk_free(st);
+	}
+
+void sk_free(STACK *st)
+	{
+	if (st == NULL) return;
+	if (st->data != NULL) OPENSSL_free(st->data);
+	OPENSSL_free(st);
+	}
+
+int sk_num(const STACK *st)
+{
+	if(st == NULL) return -1;
+	return st->num;
+}
+
+char *sk_value(const STACK *st, int i)
+{
+	if(!st || (i < 0) || (i >= st->num)) return NULL;
+	return st->data[i];
+}
+
+char *sk_set(STACK *st, int i, char *value)
+{
+	if(!st || (i < 0) || (i >= st->num)) return NULL;
+	return (st->data[i] = value);
+}
+
+void sk_sort(STACK *st)
+	{
+	if (st && !st->sorted)
+		{
+		int (*comp_func)(const void *,const void *);
+
+		/* same comment as in sk_find ... previously st->comp was declared
+		 * as a (void*,void*) callback type, but this made the population
+		 * of the callback pointer illogical - our callbacks compare
+		 * type** with type**, so we leave the casting until absolutely
+		 * necessary (ie. "now"). */
+		comp_func=(int (*)(const void *,const void *))(st->comp);
+		qsort(st->data,st->num,sizeof(char *), comp_func);
+		st->sorted=1;
+		}
+	}
+
+int sk_is_sorted(const STACK *st)
+	{
+	if (!st)
+		return 1;
+	return st->sorted;
+	}