Initial import of OpenSSH v2.1.

1 files changed, 63 insertions, 12 deletions

diff --git a/crypto/openssh/bufaux.c b/crypto/openssh/bufaux.c
index dddc41f..922acc4 100644
--- a/crypto/openssh/bufaux.c
+++ b/crypto/openssh/bufaux.c
@@ -1,24 +1,26 @@
 /*
- * 
+ *
  * bufaux.c
- * 
+ *
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
- * 
+ *
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  *                    All rights reserved
- * 
+ *
  * Created: Wed Mar 29 02:24:47 1995 ylo
- * 
+ *
  * Auxiliary functions for storing and retrieving various data types to/from
  * Buffers.
  *
+ * SSH2 packet format added by Markus Friedl
+ *
  */
 
 #include "includes.h"
-RCSID("$Id: bufaux.c,v 1.8 2000/03/16 20:56:14 markus Exp $");
+RCSID("$Id: bufaux.c,v 1.11 2000/04/14 10:30:30 markus Exp $");
 
 #include "ssh.h"
-#include <ssl/bn.h>
+#include <openssl/bn.h>
 #include "bufaux.h"
 #include "xmalloc.h"
 #include "getput.h"
@@ -76,9 +78,53 @@ buffer_get_bignum(Buffer *buffer, BIGNUM *value)
 }
 
 /*
+ * Stores an BIGNUM in the buffer in SSH2 format.
+ */
+void
+buffer_put_bignum2(Buffer *buffer, BIGNUM *value)
+{
+	int bytes = BN_num_bytes(value) + 1;
+	unsigned char *buf = xmalloc(bytes);
+	int oi;
+	int hasnohigh = 0;
+	buf[0] = '\0';
+	/* Get the value of in binary */
+	oi = BN_bn2bin(value, buf+1);
+	if (oi != bytes-1)
+		fatal("buffer_put_bignum: BN_bn2bin() failed: oi %d != bin_size %d",
+		      oi, bytes);
+	hasnohigh = (buf[1] & 0x80) ? 0 : 1;
+	if (value->neg) {
+		/**XXX should be two's-complement */
+		int i, carry;
+		unsigned char *uc = buf;
+		log("negativ!");
+		for(i = bytes-1, carry = 1; i>=0; i--) {
+			uc[i] ^= 0xff;
+			if(carry)
+				carry = !++uc[i];
+		}
+	}
+	buffer_put_string(buffer, buf+hasnohigh, bytes-hasnohigh);
+	memset(buf, 0, bytes);
+	xfree(buf);
+}
+
+int
+buffer_get_bignum2(Buffer *buffer, BIGNUM *value)
+{
+	/**XXX should be two's-complement */
+	int len;
+	unsigned char *bin = (unsigned char *)buffer_get_string(buffer, (unsigned int *)&len);
+	BN_bin2bn(bin, len, value);
+	xfree(bin);
+	return len;
+}
+
+/*
  * Returns an integer from the buffer (4 bytes, msb first).
  */
-unsigned int 
+unsigned int
 buffer_get_int(Buffer *buffer)
 {
 	unsigned char buf[4];
@@ -89,7 +135,7 @@ buffer_get_int(Buffer *buffer)
 /*
  * Stores an integer in the buffer in 4 bytes, msb first.
  */
-void 
+void
 buffer_put_int(Buffer *buffer, unsigned int value)
 {
 	char buf[4];
@@ -129,17 +175,22 @@ buffer_get_string(Buffer *buffer, unsigned int *length_ptr)
 /*
  * Stores and arbitrary binary string in the buffer.
  */
-void 
+void
 buffer_put_string(Buffer *buffer, const void *buf, unsigned int len)
 {
 	buffer_put_int(buffer, len);
 	buffer_append(buffer, buf, len);
 }
+void
+buffer_put_cstring(Buffer *buffer, const char *s)
+{
+	buffer_put_string(buffer, s, strlen(s));
+}
 
 /*
  * Returns a character from the buffer (0 - 255).
  */
-int 
+int
 buffer_get_char(Buffer *buffer)
 {
 	char ch;
@@ -150,7 +201,7 @@ buffer_get_char(Buffer *buffer)
 /*
  * Stores a character in the buffer.
  */
-void 
+void
 buffer_put_char(Buffer *buffer, int value)
 {
 	char ch = value;