X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/aff51935734441207923b8e59fbc3644fc4e7d2c..6a2c4cd8b3908e0d7e28789e83b4dc2b69aaf6d4:/packet.c

diff --git a/packet.c b/packet.c
index 16d5f972..82a56940 100644
--- a/packet.c
+++ b/packet.c
@@ -37,7 +37,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: packet.c,v 1.112 2003/09/23 20:17:11 markus Exp $");
+RCSID("$OpenBSD: packet.c,v 1.115 2004/06/21 17:36:31 avsm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -154,8 +154,10 @@ packet_set_connection(int fd_in, int fd_out)
 		fatal("packet_set_connection: cannot load cipher 'none'");
 	connection_in = fd_in;
 	connection_out = fd_out;
-	cipher_init(&send_context, none, "", 0, NULL, 0, CIPHER_ENCRYPT);
-	cipher_init(&receive_context, none, "", 0, NULL, 0, CIPHER_DECRYPT);
+	cipher_init(&send_context, none, (const u_char *)"",
+	    0, NULL, 0, CIPHER_ENCRYPT);
+	cipher_init(&receive_context, none, (const u_char *)"",
+	    0, NULL, 0, CIPHER_DECRYPT);
 	newkeys[MODE_IN] = newkeys[MODE_OUT] = NULL;
 	if (!initialized) {
 		initialized = 1;
@@ -317,13 +319,10 @@ void
 packet_set_nonblocking(void)
 {
 	/* Set the socket into non-blocking mode. */
-	if (fcntl(connection_in, F_SETFL, O_NONBLOCK) < 0)
-		error("fcntl O_NONBLOCK: %.100s", strerror(errno));
+	set_nonblock(connection_in);
 
-	if (connection_out != connection_in) {
-		if (fcntl(connection_out, F_SETFL, O_NONBLOCK) < 0)
-			error("fcntl O_NONBLOCK: %.100s", strerror(errno));
-	}
+	if (connection_out != connection_in)
+		set_nonblock(connection_out);
 }
 
 /* Returns the socket used for reading. */
@@ -508,7 +507,7 @@ packet_send1(void)
 	u_char buf[8], *cp;
 	int i, padding, len;
 	u_int checksum;
-	u_int32_t rand = 0;
+	u_int32_t rnd = 0;
 
 	/*
 	 * If using packet compression, compress the payload of the outgoing
@@ -534,9 +533,9 @@ packet_send1(void)
 		cp = buffer_ptr(&outgoing_packet);
 		for (i = 0; i < padding; i++) {
 			if (i % 4 == 0)
-				rand = arc4random();
-			cp[7 - i] = rand & 0xff;
-			rand >>= 8;
+				rnd = arc4random();
+			cp[7 - i] = rnd & 0xff;
+			rnd >>= 8;
 		}
 	}
 	buffer_consume(&outgoing_packet, 8 - padding);
@@ -581,18 +580,18 @@ set_newkeys(int mode)
 	Comp *comp;
 	CipherContext *cc;
 	u_int64_t *max_blocks;
-	int encrypt;
+	int crypt_type;
 
 	debug2("set_newkeys: mode %d", mode);
 
 	if (mode == MODE_OUT) {
 		cc = &send_context;
-		encrypt = CIPHER_ENCRYPT;
+		crypt_type = CIPHER_ENCRYPT;
 		p_send.packets = p_send.blocks = 0;
 		max_blocks = &max_blocks_out;
 	} else {
 		cc = &receive_context;
-		encrypt = CIPHER_DECRYPT;
+		crypt_type = CIPHER_DECRYPT;
 		p_read.packets = p_read.blocks = 0;
 		max_blocks = &max_blocks_in;
 	}
@@ -621,7 +620,7 @@ set_newkeys(int mode)
 		mac->enabled = 1;
 	DBG(debug("cipher_init_context: %d", mode));
 	cipher_init(cc, enc->cipher, enc->key, enc->key_len,
-	    enc->iv, enc->block_size, encrypt);
+	    enc->iv, enc->block_size, crypt_type);
 	/* Deleting the keys does not gain extra security */
 	/* memset(enc->iv,  0, enc->block_size);
 	   memset(enc->key, 0, enc->key_len); */
@@ -655,7 +654,7 @@ packet_send2_wrapped(void)
 	u_char padlen, pad;
 	u_int packet_length = 0;
 	u_int i, len;
-	u_int32_t rand = 0;
+	u_int32_t rnd = 0;
 	Enc *enc   = NULL;
 	Mac *mac   = NULL;
 	Comp *comp = NULL;
@@ -714,9 +713,9 @@ packet_send2_wrapped(void)
 		/* random padding */
 		for (i = 0; i < padlen; i++) {
 			if (i % 4 == 0)
-				rand = arc4random();
-			cp[i] = rand & 0xff;
-			rand >>= 8;
+				rnd = arc4random();
+			cp[i] = rnd & 0xff;
+			rnd >>= 8;
 		}
 	} else {
 		/* clear padding */
@@ -1403,10 +1402,10 @@ packet_not_very_much_data_to_write(void)
 }
 
 
-#if defined(IP_TOS) && !defined(IP_TOS_IS_BROKEN)
 static void
 packet_set_tos(int interactive)
 {
+#if defined(IP_TOS) && !defined(IP_TOS_IS_BROKEN)
 	int tos = interactive ? IPTOS_LOWDELAY : IPTOS_THROUGHPUT;
 
 	if (!packet_connection_is_on_socket() ||
@@ -1416,8 +1415,8 @@ packet_set_tos(int interactive)
 	    sizeof(tos)) < 0)
 		error("setsockopt IP_TOS %d: %.100s:",
 		    tos, strerror(errno));
-}
 #endif
+}
 
 /* Informs that the current session is interactive.  Sets IP flags for that. */
 
@@ -1438,10 +1437,7 @@ packet_set_interactive(int interactive)
 		return;
 	if (interactive)
 		set_nodelay(connection_in);
-#if defined(IP_TOS) && !defined(IP_TOS_IS_BROKEN)
 	packet_set_tos(interactive);
-#endif
-
 }
 
 /* Returns true if the current connection is interactive. */
@@ -1452,7 +1448,7 @@ packet_is_interactive(void)
 	return interactive_mode;
 }
 
-u_int
+int
 packet_set_maxsize(u_int s)
 {
 	static int called = 0;
@@ -1493,20 +1489,20 @@ packet_add_padding(u_char pad)
 void
 packet_send_ignore(int nbytes)
 {
-	u_int32_t rand = 0;
+	u_int32_t rnd = 0;
 	int i;
 
 	packet_start(compat20 ? SSH2_MSG_IGNORE : SSH_MSG_IGNORE);
 	packet_put_int(nbytes);
 	for (i = 0; i < nbytes; i++) {
 		if (i % 4 == 0)
-			rand = arc4random();
-		packet_put_char(rand & 0xff);
-		rand >>= 8;
+			rnd = arc4random();
+		packet_put_char(rnd & 0xff);
+		rnd >>= 8;
 	}
 }
 
-#define MAX_PACKETS	(1<<31)
+#define MAX_PACKETS	(1U<<31)
 int
 packet_need_rekeying(void)
 {