From b2d0e06f75ee5b1dc4b4f3abd168c22985731f70 Mon Sep 17 00:00:00 2001
From: Matthew Garrett <mjg@redhat.com>
Date: Mon, 18 Jun 2012 17:49:57 -0400
Subject: Add crypto libraries

---
 Cryptlib/OpenSSL/crypto/comp/c_rle.c | 62 ++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100755 Cryptlib/OpenSSL/crypto/comp/c_rle.c

(limited to 'Cryptlib/OpenSSL/crypto/comp/c_rle.c')

diff --git a/Cryptlib/OpenSSL/crypto/comp/c_rle.c b/Cryptlib/OpenSSL/crypto/comp/c_rle.c
new file mode 100755
index 00000000..efd366fa
--- /dev/null
+++ b/Cryptlib/OpenSSL/crypto/comp/c_rle.c
@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <openssl/objects.h>
+#include <openssl/comp.h>
+
+static int rle_compress_block(COMP_CTX *ctx, unsigned char *out,
+	unsigned int olen, unsigned char *in, unsigned int ilen);
+static int rle_expand_block(COMP_CTX *ctx, unsigned char *out,
+	unsigned int olen, unsigned char *in, unsigned int ilen);
+
+static COMP_METHOD rle_method={
+	NID_rle_compression,
+	LN_rle_compression,
+	NULL,
+	NULL,
+	rle_compress_block,
+	rle_expand_block,
+	NULL,
+	NULL,
+	};
+
+COMP_METHOD *COMP_rle(void)
+	{
+	return(&rle_method);
+	}
+
+static int rle_compress_block(COMP_CTX *ctx, unsigned char *out,
+	     unsigned int olen, unsigned char *in, unsigned int ilen)
+	{
+	/* int i; */
+
+	if (olen < (ilen+1))
+		{
+		/* ZZZZZZZZZZZZZZZZZZZZZZ */
+		return(-1);
+		}
+
+	*(out++)=0;
+	memcpy(out,in,ilen);
+	return(ilen+1);
+	}
+
+static int rle_expand_block(COMP_CTX *ctx, unsigned char *out,
+	     unsigned int olen, unsigned char *in, unsigned int ilen)
+	{
+	int i;
+
+	if (olen < (ilen-1))
+		{
+		/* ZZZZZZZZZZZZZZZZZZZZZZ */
+		return(-1);
+		}
+
+	i= *(in++);
+	if (i == 0)
+		{
+		memcpy(out,in,ilen-1);
+		}
+	return(ilen-1);
+	}
+
-- 
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