1 files changed, 177 insertions, 185 deletions

diff --git a/src/plugins/lanplus/lanplus.c b/src/plugins/lanplus/lanplus.c
index a0e388c..ed41380 100644
--- a/src/plugins/lanplus/lanplus.c
+++ b/src/plugins/lanplus/lanplus.c
@@ -29,7 +29,6 @@
  * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  */
-#define _GNU_SOURCE
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -103,15 +102,14 @@ static void getIpmiPayloadWireRep(
 								  uint8_t    rq_seq,
 								  uint8_t curr_seq);
 static void getSolPayloadWireRep(
-								  struct ipmi_intf       * intf,
 								 uint8_t          * msg,
 								 struct ipmi_v2_payload * payload);
 static void read_open_session_response(struct ipmi_rs * rsp, int offset);
 static void read_rakp2_message(struct ipmi_rs * rsp, int offset, uint8_t alg);
 static void read_rakp4_message(struct ipmi_rs * rsp, int offset, uint8_t alg);
-static void read_session_data(struct ipmi_rs * rsp, int * offset, struct ipmi_session *s);
-static void read_session_data_v15(struct ipmi_rs * rsp, int * offset, struct ipmi_session *s);
-static void read_session_data_v2x(struct ipmi_rs * rsp, int * offset, struct ipmi_session *s);
+static void read_session_data(struct ipmi_rs * rsp, int * offset);
+static void read_session_data_v15(struct ipmi_rs * rsp, int * offset);
+static void read_session_data_v2x(struct ipmi_rs * rsp, int * offset);
 static void read_ipmi_response(struct ipmi_rs * rsp, int * offset);
 static void read_sol_packet(struct ipmi_rs * rsp, int * offset);
 static struct ipmi_rs * ipmi_lanplus_recv_sol(struct ipmi_intf * intf);
@@ -119,7 +117,6 @@ static struct ipmi_rs * ipmi_lanplus_send_sol(
 											  struct ipmi_intf * intf,
 											  struct ipmi_v2_payload * payload);
 static int check_sol_packet_for_new_data(
-									 struct ipmi_intf * intf,
 									 struct ipmi_rs *rsp);
 static void ack_sol_packet(
 							struct ipmi_intf * intf,
@@ -164,141 +161,115 @@ extern int verbose;
  * returns 0 on success
  *         1 on failure
  */
-int lanplus_get_requested_ciphers(int       cipher_suite_id,
-								  uint8_t * auth_alg,
-								  uint8_t * integrity_alg,
-								  uint8_t * crypt_alg)
+int
+lanplus_get_requested_ciphers(enum cipher_suite_ids cipher_suite_id,
+                              uint8_t *auth_alg,
+                              uint8_t *integrity_alg,
+                              uint8_t *crypt_alg)
 {
-#ifdef HAVE_CRYPTO_SHA256
-	if ((cipher_suite_id < 0) || (cipher_suite_id > 17)) {
-		return 1;
-	}
-#else
-	if ((cipher_suite_id < 0) || (cipher_suite_id > 14))
-		return 1;
-#endif /* HAVE_CRYPTO_SHA256 */
 		/* See table 22-19 for the source of the statement */
 	switch (cipher_suite_id)
 	{
-	case 0:
+	case IPMI_LANPLUS_CIPHER_SUITE_0:
 		*auth_alg      = IPMI_AUTH_RAKP_NONE;
 		*integrity_alg = IPMI_INTEGRITY_NONE;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 1:
+	case IPMI_LANPLUS_CIPHER_SUITE_1:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA1;
 		*integrity_alg = IPMI_INTEGRITY_NONE;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 2:
+	case IPMI_LANPLUS_CIPHER_SUITE_2:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA1;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_SHA1_96;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 3:
+	case IPMI_LANPLUS_CIPHER_SUITE_3:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA1;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_SHA1_96;
 		*crypt_alg     = IPMI_CRYPT_AES_CBC_128;
 		break;
-	case 4:
+	case IPMI_LANPLUS_CIPHER_SUITE_4:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA1;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_SHA1_96;
 		*crypt_alg     = IPMI_CRYPT_XRC4_128;
 		break;
-	case 5:
+	case IPMI_LANPLUS_CIPHER_SUITE_5:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA1;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_SHA1_96;
 		*crypt_alg     = IPMI_CRYPT_XRC4_40;
 		break;
-	case 6:
+	case IPMI_LANPLUS_CIPHER_SUITE_6:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_NONE;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 7:
+	case IPMI_LANPLUS_CIPHER_SUITE_7:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 8:
+	case IPMI_LANPLUS_CIPHER_SUITE_8:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_AES_CBC_128;
 		break;
-	case 9:
+	case IPMI_LANPLUS_CIPHER_SUITE_9:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_XRC4_128;
 		break;
-	case 10:
+	case IPMI_LANPLUS_CIPHER_SUITE_10:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_XRC4_40;
 		break;
-	case 11:
+	case IPMI_LANPLUS_CIPHER_SUITE_11:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 12:
+	case IPMI_LANPLUS_CIPHER_SUITE_12:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_AES_CBC_128;
 		break;
-	case 13:
+	case IPMI_LANPLUS_CIPHER_SUITE_13:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_XRC4_128;
 		break;
-	case 14:
+	case IPMI_LANPLUS_CIPHER_SUITE_14:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_MD5;
 		*integrity_alg = IPMI_INTEGRITY_MD5_128;
 		*crypt_alg     = IPMI_CRYPT_XRC4_40;
 		break;
 #ifdef HAVE_CRYPTO_SHA256
-	case 15:
+	case IPMI_LANPLUS_CIPHER_SUITE_15:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA256;
 		*integrity_alg = IPMI_INTEGRITY_NONE;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 16:
+	case IPMI_LANPLUS_CIPHER_SUITE_16:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA256;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_SHA256_128;
 		*crypt_alg     = IPMI_CRYPT_NONE;
 		break;
-	case 17:
+	case IPMI_LANPLUS_CIPHER_SUITE_17:
 		*auth_alg      = IPMI_AUTH_RAKP_HMAC_SHA256;
 		*integrity_alg = IPMI_INTEGRITY_HMAC_SHA256_128;
 		*crypt_alg     = IPMI_CRYPT_AES_CBC_128;
 		break;
 #endif /* HAVE_CRYPTO_SHA256 */
+	case IPMI_LANPLUS_CIPHER_SUITE_RESERVED:
+	default:
+		return 1;
 	}
 
 	return 0;
 }
 
-
-
-/*
- * Reverse the order of arbitrarily long strings of bytes
- */
-void lanplus_swap(
-				  uint8_t * buffer,
-						int             length)
-{
-	int i;
-	uint8_t temp;
-
-	for (i =0; i < length/2; ++i)
-	{
-		temp = buffer[i];
-		buffer[i] = buffer[length - 1 - i];
-		buffer[length - 1 - i] = temp;
-	}
-}
-
-
-
 static const struct valstr plus_payload_types_vals[] = {
 	 { IPMI_PAYLOAD_TYPE_IPMI,              "IPMI (0)" },	// IPMI Message
 	 { IPMI_PAYLOAD_TYPE_SOL,               "SOL  (1)" },	// SOL (Serial over LAN)
@@ -320,7 +291,7 @@ ipmi_req_add_entry(struct ipmi_intf * intf, struct ipmi_rq * req, uint8_t req_se
 	struct ipmi_rq_entry * e;
 
 	e = malloc(sizeof(struct ipmi_rq_entry));
-	if (e == NULL) {
+	if (!e) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return NULL;
 	}
@@ -331,7 +302,7 @@ ipmi_req_add_entry(struct ipmi_intf * intf, struct ipmi_rq * req, uint8_t req_se
 	e->intf = intf;
 	e->rq_seq = req_seq;
 
-	if (ipmi_req_entries == NULL)
+	if (!ipmi_req_entries)
 		ipmi_req_entries = e;
 	else
 		ipmi_req_entries_tail->next = e;
@@ -523,7 +494,7 @@ ipmi_lan_recv_packet(struct ipmi_intf * intf)
  * asf.data[f:a]= 0x000000000000
  */
 static int
-ipmi_handle_pong(struct ipmi_intf * intf, struct ipmi_rs * rsp)
+ipmi_handle_pong(struct ipmi_rs *rsp)
 {
 	struct rmcp_pong {
 		struct rmcp_hdr rmcp;
@@ -533,7 +504,7 @@ ipmi_handle_pong(struct ipmi_intf * intf, struct ipmi_rs * rsp)
 		uint8_t sup_entities;
 		uint8_t sup_interact;
 		uint8_t reserved[6];
-	} * pong;
+	} *pong;
 
 	if (!rsp)
 		return -1;
@@ -595,7 +566,7 @@ ipmiv2_lan_ping(struct ipmi_intf * intf)
 	int rv;
 
 	data = malloc(len);
-	if (data == NULL) {
+	if (!data) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return -1;
 	}
@@ -644,7 +615,7 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 	rsp = ipmi_lan_recv_packet(intf);
 
 	/* check if no packet has come */
-	if (rsp == NULL) {
+	if (!rsp) {
 		return NULL;
 	}
 
@@ -653,7 +624,7 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 
 	if (rmcp_rsp->class == RMCP_CLASS_ASF) {
 		/* might be ping response packet */
-		rv = ipmi_handle_pong(intf, rsp);
+		rv = ipmi_handle_pong(rsp);
 		return (rv <= 0) ? NULL : rsp;
 	}
 
@@ -683,7 +654,7 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 	 * -------------------------------------------------------------------
 	 */
 
-	read_session_data(rsp, &offset, intf->session);
+	read_session_data(rsp, &offset);
 
 	/*
 	 * Skip packets that are not intended for this session
@@ -764,14 +735,12 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 			entry = ipmi_req_lookup_entry(rsp->payload.ipmi_response.rq_seq,
 								rsp->payload.ipmi_response.cmd);
 
-			if (entry == NULL) {
+			if (!entry) {
 				lprintf(LOG_INFO, "IPMI Request Match NOT FOUND");
 				/* read one more packet */
 				return (struct ipmi_rs *)1;
 			};
 
-			uint8_t target_cmd = entry->req.msg.target_cmd;
-
 			lprintf(LOG_DEBUG+2, "IPMI Request Match found");
 
 			if (entry->bridging_level) {
@@ -791,12 +760,6 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 						printbuf(&rsp->data[offset], (rsp->data_len-offset-1),
 								"bridge command response");
 						/*
-						 * decrement payload size
-						 * (cks2 for outer Send Message)
-						 */
-						payload_size--;
-
-						/*
 						 * need to make a loop for embedded bridged response
 						 */
 						loop++;
@@ -819,9 +782,12 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 			 * rsp->data_len becomes the length of that data
 			 */
 			extra_data_length = payload_size - (offset - payload_start) - 1;
-			if (extra_data_length) {
+			if (extra_data_length > 0) {
 				rsp->data_len = extra_data_length;
 				memmove(rsp->data, rsp->data + offset, extra_data_length);
+				offset = 0;
+				payload_start = 0;
+				payload_size = extra_data_length;
 			} else {
 				rsp->data_len = 0;
 			}
@@ -873,7 +839,7 @@ ipmi_lan_poll_single(struct ipmi_intf * intf)
 		}
 		read_sol_packet(rsp, &offset);
 		extra_data_length = payload_size - (offset - payload_start);
-		if (rsp && extra_data_length) {
+		if (extra_data_length > 0) {
 			rsp->data_len = extra_data_length;
 			memmove(rsp->data, rsp->data + offset, extra_data_length);
 		} else {
@@ -990,7 +956,7 @@ read_open_session_response(struct ipmi_rs * rsp, int offset)
  *
  * param rsp [in/out] reading from the data variable and writing to the rakp 2
  *       section
- * param offset [in] tells us where hte rakp2 payload starts
+ * param offset [in] tells us where the rakp2 payload starts
  * param auth_alg [in] describes the authentication algorithm was agreed upon in
  *       the open session request/response phase.  We need to know that here so
  *       that we know how many bytes (if any) to read fromt the packet.
@@ -1011,31 +977,19 @@ read_rakp2_message(
 	 /* RAKP response code */
 	 rsp->payload.rakp2_message.rakp_return_code = rsp->data[offset + 1];
 
-	 /* Console session ID */
-	 memcpy(&(rsp->payload.rakp2_message.console_id),
-			rsp->data + offset + 4,
-			4);
-	 #if WORDS_BIGENDIAN
-	 rsp->payload.rakp2_message.console_id =
-		 BSWAP_32(rsp->payload.rakp2_message.console_id);
-	 #endif
+	/* Console session ID */
+	rsp->payload.rakp2_message.console_id = ipmi32toh(&rsp->data[offset + 4]);
 
-	 /* BMC random number */
-	 memcpy(&(rsp->payload.rakp2_message.bmc_rand),
-			rsp->data + offset + 8,
-			16);
-	 #if WORDS_BIGENDIAN
-	 lanplus_swap(rsp->payload.rakp2_message.bmc_rand, 16);
-	 #endif
+	/* BMC random number */
+	memcpy(&(rsp->payload.rakp2_message.bmc_rand),
+	       array_letoh(&rsp->data[offset + 8], 16),
+	       16);
+
+	/* BMC GUID */
+	memcpy(&(rsp->payload.rakp2_message.bmc_guid),
+	       array_letoh(&rsp->data[offset + 24], 16),
+	       16);
 
-	 /* BMC GUID */
-	 memcpy(&(rsp->payload.rakp2_message.bmc_guid),
-			rsp->data + offset + 24,
-			16);
-	 #if WORDS_BIGENDIAN
-	 lanplus_swap(rsp->payload.rakp2_message.bmc_guid, 16);
-	 #endif
-	 
 	 /* Key exchange authentication code */
 	 switch (auth_alg)
 	 {
@@ -1089,7 +1043,7 @@ read_rakp2_message(
  *
  * param rsp [in/out] reading from the data variable and writing to the rakp
  *       4 section
- * param offset [in] tells us where hte rakp4 payload starts
+ * param offset [in] tells us where the rakp4 payload starts
  * param integrity_alg [in] describes the authentication algorithm was
  *       agreed upon in the open session request/response phase.  We need
  *       to know that here so that we know how many bytes (if any) to read
@@ -1111,16 +1065,9 @@ read_rakp4_message(
 	 /* RAKP response code */
 	 rsp->payload.rakp4_message.rakp_return_code = rsp->data[offset + 1];
 
-	 /* Console session ID */
-	 memcpy(&(rsp->payload.rakp4_message.console_id),
-			rsp->data + offset + 4,
-			4);
-	 #if WORDS_BIGENDIAN
-	 rsp->payload.rakp4_message.console_id =
-		 BSWAP_32(rsp->payload.rakp4_message.console_id);
-	 #endif
+	/* Console session ID */
+	rsp->payload.rakp4_message.console_id = ipmi32toh(&rsp->data[offset + 4]);
 
-	 
 	 /* Integrity check value */
 	 switch (auth_alg)
 	 {
@@ -1178,21 +1125,19 @@ read_rakp4_message(
  * param offset  [in/out] should point to the beginning of the session when
  *               this function is called.  The offset will be adjusted to
  *               point to the end of the session when this function exits.
- * param session holds our session state
  */
 void
 read_session_data(
 				  struct ipmi_rs * rsp,
-				  int * offset,
-				  struct ipmi_session * s)
+				  int * offset)
 {
 	/* We expect to read different stuff depending on the authtype */
 	rsp->session.authtype = rsp->data[*offset];
 
 	if (rsp->session.authtype == IPMI_SESSION_AUTHTYPE_RMCP_PLUS)
-		read_session_data_v2x(rsp, offset, s);
+		read_session_data_v2x(rsp, offset);
 	else
-		read_session_data_v15(rsp, offset, s);
+		read_session_data_v15(rsp, offset);
 }
 
 
@@ -1218,8 +1163,7 @@ read_session_data(
 void
 read_session_data_v2x(
 					  struct ipmi_rs      * rsp,
-					  int                 * offset,
-					  struct ipmi_session * s)
+					  int                 * offset)
 {
 	rsp->session.authtype = rsp->data[(*offset)++];
 
@@ -1231,25 +1175,15 @@ read_session_data_v2x(
 	rsp->session.payloadtype = rsp->data[(*offset)++] & 0x3F;
 
 	/* Session ID */
-	memcpy(&rsp->session.id, rsp->data + *offset, 4);
+	rsp->session.id = ipmi32toh(&rsp->data[*offset]);
 	*offset += 4;
-	#if WORDS_BIGENDIAN
-	rsp->session.id = BSWAP_32(rsp->session.id);
-	#endif
-
 
 	/* Ignored, so far */
-	memcpy(&rsp->session.seq, rsp->data + *offset, 4);
+	rsp->session.seq = ipmi32toh(&rsp->data[*offset]);
 	*offset += 4;
-	#if WORDS_BIGENDIAN
-	rsp->session.seq = BSWAP_32(rsp->session.seq);
-	#endif		
 
-	memcpy(&rsp->session.msglen, rsp->data + *offset, 2);
+	rsp->session.msglen = ipmi16toh(&rsp->data[*offset]);
 	*offset += 2;
-	#if WORDS_BIGENDIAN
-	rsp->session.msglen = BSWAP_16(rsp->session.msglen);
-	#endif
 }
 
 
@@ -1257,7 +1191,7 @@ read_session_data_v2x(
 /*
  * read_session_data_v15
  *
- * Initialize the ipmi_rsp from the session header of the packet. 
+ * Initialize the ipmi_rsp from the session header of the packet.
  *
  * The offset should point the first byte of the the IPMI session when this
  * function is called.  When this function exits, the offset will point to
@@ -1272,8 +1206,7 @@ read_session_data_v2x(
  */
 void read_session_data_v15(
 							struct ipmi_rs * rsp,
-							int * offset,
-							struct ipmi_session * s)
+							int * offset)
 {
 	/* All v15 messages are IPMI messages */
 	rsp->session.payloadtype = IPMI_PAYLOAD_TYPE_IPMI;
@@ -1537,7 +1470,6 @@ void getIpmiPayloadWireRep(
  * param payload [in] holds the v2 payload with our SOL data
  */
 void getSolPayloadWireRep(
-						  struct ipmi_intf       * intf,  /* in out */
 						  uint8_t          * msg,     /* output */
 						  struct ipmi_v2_payload * payload) /* input */
 {
@@ -1667,7 +1599,7 @@ ipmi_lanplus_build_v2x_msg(
 
 
 	msg = malloc(len);
-	if (msg == NULL) {
+	if (!msg) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return;
 	}
@@ -1743,7 +1675,7 @@ ipmi_lanplus_build_v2x_msg(
 		break;
 
 	case IPMI_PAYLOAD_TYPE_SOL:
-		getSolPayloadWireRep(intf,
+		getSolPayloadWireRep(
 							 msg + IPMI_LANPLUS_OFFSET_PAYLOAD,
 							 payload);
 
@@ -1971,8 +1903,6 @@ ipmi_lanplus_build_v2x_ipmi_cmd(
 		entry = ipmi_req_add_entry(intf, req, curr_seq);
 	/* it's a bridge command */
 	} else {
-		unsigned char backup_cmd;
-
 		/* Add entry for cmd */
 		entry = ipmi_req_add_entry(intf, req, curr_seq);
 
@@ -1988,7 +1918,7 @@ ipmi_lanplus_build_v2x_ipmi_cmd(
 		}
 	}
 
-	if (entry == NULL)
+	if (!entry)
 		return NULL;
 
 	// Build our payload
@@ -2054,13 +1984,13 @@ ipmi_lanplus_build_v15_ipmi_cmd(
 	struct ipmi_rq_entry * entry;
 
 	entry = ipmi_req_add_entry(intf, req, 0);
-	if (entry == NULL)
+	if (!entry)
 		return NULL;
 
 	len = req->msg.data_len + 21;
 
 	msg = malloc(len);
-	if (msg == NULL) {
+	if (!msg) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return NULL;
 	}
@@ -2251,7 +2181,7 @@ ipmi_lanplus_send_payload(
 					entry = ipmi_lanplus_build_v2x_ipmi_cmd(intf, ipmi_request, isRetry);
 				}
 
-				if (entry == NULL) {
+				if (!entry) {
 					lprintf(LOG_ERR, "Aborting send command, unable to build");
 					return NULL;
 				}
@@ -2397,7 +2327,7 @@ ipmi_lanplus_send_payload(
 
 			/* Duplicate Request ccode most likely indicates a response to
 			   a previous retry. Ignore and keep polling. */
-			while ((rsp != NULL) && (rsp->ccode == 0xcf))
+			while (rsp && rsp->ccode == 0xcf)
 			{
 				rsp = NULL;
 				rsp = ipmi_lan_poll_recv(intf);
@@ -2584,7 +2514,6 @@ ipmi_lanplus_send_sol(
  */
 static int
 check_sol_packet_for_new_data(
-							  struct ipmi_intf * intf,
 							  struct ipmi_rs *rsp)
 {
 	static uint8_t last_received_sequence_number = 0;
@@ -2623,7 +2552,7 @@ check_sol_packet_for_new_data(
 
 
 		/*
-		 *Rember the data for next round
+		 * Remember the data for next round
 		 */
 		if (rsp->payload.sol_packet.packet_sequence_number)
 		{
@@ -2700,7 +2629,7 @@ ipmi_lanplus_recv_sol(struct ipmi_intf * intf)
 		 * Remembers the data sent, and alters the data to just
 		 * include the new stuff.
 		 */
-		check_sol_packet_for_new_data(intf, rsp);
+		check_sol_packet_for_new_data(rsp);
 	}
 	return rsp;
 }
@@ -2770,7 +2699,7 @@ ipmi_get_auth_capabilities_cmd(
 
 	rsp = intf->sendrecv(intf, &req);
 
-	if (rsp == NULL || rsp->ccode > 0) {
+	if (!rsp || rsp->ccode) {
 		/*
 		 * It's very possible that this failed because we asked for IPMI
 		 * v2 data. Ask again, without requesting IPMI v2 data.
@@ -2779,11 +2708,11 @@ ipmi_get_auth_capabilities_cmd(
 
 		rsp = intf->sendrecv(intf, &req);
 
-		if (rsp == NULL) {
+		if (!rsp) {
 			lprintf(LOG_INFO, "Get Auth Capabilities error");
 			return 1;
 		}
-		if (rsp->ccode > 0) {
+		if (rsp->ccode) {
 			lprintf(LOG_INFO, "Get Auth Capabilities error: %s",
 				val2str(rsp->ccode, completion_code_vals));
 			return 1;
@@ -2808,10 +2737,9 @@ ipmi_close_session_cmd(struct ipmi_intf * intf)
 	struct ipmi_rs * rsp;
 	struct ipmi_rq req;
 	uint8_t msg_data[4];
-	uint32_t bmc_session_lsbf;
 	uint8_t backupBridgePossible;
 
-	if (intf->session == NULL
+	if (!intf->session
 			|| intf->session->v2_data.session_state != LANPLUS_STATE_ACTIVE)
 		return -1;
 
@@ -2820,12 +2748,7 @@ ipmi_close_session_cmd(struct ipmi_intf * intf)
 	intf->target_addr = IPMI_BMC_SLAVE_ADDR;
 	bridgePossible = 0;
 
-	bmc_session_lsbf = intf->session->v2_data.bmc_id;
-#if WORDS_BIGENDIAN
-	bmc_session_lsbf = BSWAP_32(bmc_session_lsbf);
-#endif
-
-	memcpy(&msg_data, &bmc_session_lsbf, 4);
+	htoipmi32(intf->session->v2_data.bmc_id, msg_data);
 
 	memset(&req, 0, sizeof(req));
 	req.msg.netfn		= IPMI_NETFN_APP;
@@ -2834,7 +2757,7 @@ ipmi_close_session_cmd(struct ipmi_intf * intf)
 	req.msg.data_len	= 4;
 
 	rsp = intf->sendrecv(intf, &req);
-	if (rsp == NULL) {
+	if (!rsp) {
 		/* Looks like the session was closed */
 		lprintf(LOG_ERR, "Close Session command failed");
 		return -1;
@@ -2848,7 +2771,7 @@ ipmi_close_session_cmd(struct ipmi_intf * intf)
 			(long)intf->session->v2_data.bmc_id);
 		return -1;
 	}
-	if (rsp->ccode > 0) {
+	if (rsp->ccode) {
 		lprintf(LOG_ERR, "Close Session command failed: %s",
 			val2str(rsp->ccode, completion_code_vals));
 		return -1;
@@ -2885,7 +2808,7 @@ ipmi_lanplus_open_session(struct ipmi_intf * intf)
 	 * Build an Open Session Request Payload
 	 */
 	msg = (uint8_t*)malloc(IPMI_OPEN_SESSION_REQUEST_SIZE);
-	if (msg == NULL) {
+	if (!msg) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return 1;
 	}
@@ -2966,7 +2889,7 @@ ipmi_lanplus_open_session(struct ipmi_intf * intf)
 
 	free(msg);
 	msg = NULL;
-	if (rsp == NULL ) {
+	if (!rsp ) {
 		lprintf(LOG_DEBUG, "Timeout in open session response message.");
 		return 2;
 	}
@@ -3071,7 +2994,7 @@ ipmi_lanplus_rakp1(struct ipmi_intf * intf)
 	 * Build a RAKP 1 message
 	 */
 	msg = (uint8_t*)malloc(IPMI_RAKP1_MESSAGE_SIZE);
-	if (msg == NULL) {
+	if (!msg) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return 1;
 	}
@@ -3102,9 +3025,7 @@ ipmi_lanplus_rakp1(struct ipmi_intf * intf)
 		return 1;
 	}
 	memcpy(msg + 8, session->v2_data.console_rand, 16);
-	#if WORDS_BIGENDIAN
-	lanplus_swap(msg + 8, 16);
-	#endif
+	array_letoh(msg + 8, 16);
 
 	if (verbose > 1)
 		printbuf(session->v2_data.console_rand, 16,
@@ -3152,7 +3073,7 @@ ipmi_lanplus_rakp1(struct ipmi_intf * intf)
 	free(msg);
 	msg = NULL;
 
-	if (rsp == NULL)
+	if (!rsp)
 	{
 		lprintf(LOG_WARNING, "> Error: no response from RAKP 1 message");
 		return 2;
@@ -3236,7 +3157,7 @@ ipmi_lanplus_rakp3(struct ipmi_intf * intf)
 	 * Build a RAKP 3 message
 	 */
 	msg = (uint8_t*)malloc(IPMI_RAKP3_MESSAGE_MAX_SIZE);
-	if (msg == NULL) {
+	if (!msg) {
 		lprintf(LOG_ERR, "ipmitool: malloc failure");
 		return 1;
 	}
@@ -3325,7 +3246,7 @@ ipmi_lanplus_rakp3(struct ipmi_intf * intf)
 		 */
 		return 1;
 	}
-	else if (rsp == NULL)
+	else if (!rsp)
 	{
 		lprintf(LOG_WARNING, "> Error: no response from RAKP 3 message");
 		return 2;
@@ -3416,7 +3337,7 @@ ipmi_set_session_privlvl_cmd(struct ipmi_intf * intf)
 	req.msg.data_len	= 1;
 
 	rsp = intf->sendrecv(intf, &req);
-	if (rsp == NULL) {
+	if (!rsp) {
 		lprintf(LOG_ERR, "Set Session Privilege Level to %s failed",
 			val2str(privlvl, ipmi_privlvl_vals));
 		bridgePossible = backupBridgePossible;
@@ -3425,7 +3346,7 @@ ipmi_set_session_privlvl_cmd(struct ipmi_intf * intf)
 	if (verbose > 2)
 		printbuf(rsp->data, rsp->data_len, "set_session_privlvl");
 
-	if (rsp->ccode > 0) {
+	if (rsp->ccode) {
 		lprintf(LOG_ERR, "Set Session Privilege Level to %s failed: %s",
 			val2str(privlvl, ipmi_privlvl_vals),
 			val2str(rsp->ccode, completion_code_vals));
@@ -3441,6 +3362,62 @@ ipmi_set_session_privlvl_cmd(struct ipmi_intf * intf)
 	return 0;
 }
 
+static uint8_t
+ipmi_find_best_cipher_suite(struct ipmi_intf *intf)
+{
+	enum cipher_suite_ids best_suite = IPMI_LANPLUS_CIPHER_SUITE_RESERVED;
+#ifdef HAVE_CRYPTO_SHA256
+	struct cipher_suite_info suites[MAX_CIPHER_SUITE_COUNT];
+	size_t nr_suites = ARRAY_SIZE(suites);
+
+	/* cipher suite best order is chosen with this criteria:
+	 * HMAC-MD5 and MD5 are BAD; xRC4 is bad; AES128 is required
+	 * HMAC-SHA256 > HMAC-SHA1
+	 * secure authentication > encrypted content
+	 *
+	 * With xRC4 out, all cipher suites with MD5 out, and cipher suite 3
+	 * being required by the spec, the only better defined standard cipher
+	 * suite is 17. So if SHA256 is available, we should try to use that,
+	 * otherwise, fall back to 3.
+	 */
+	const enum cipher_suite_ids cipher_order_preferred[] = {
+		IPMI_LANPLUS_CIPHER_SUITE_17,
+		IPMI_LANPLUS_CIPHER_SUITE_3,
+	};
+	const size_t nr_preferred = ARRAY_SIZE(cipher_order_preferred);
+	size_t ipref, i;
+
+	if (ipmi_get_channel_cipher_suites(intf, "ipmi", IPMI_LAN_CHANNEL_E,
+	                                   suites, &nr_suites) < 0)
+	{
+		/* default legacy behavior - fall back to cipher suite 3 */
+		return IPMI_LANPLUS_CIPHER_SUITE_3;
+	}
+	for (ipref = 0;
+	     ipref < nr_preferred &&
+	     IPMI_LANPLUS_CIPHER_SUITE_RESERVED == best_suite;
+	     ipref++)
+	{
+		for (i = 0; i < nr_suites; i++) {
+			if (cipher_order_preferred[ipref]
+			    == suites[i].cipher_suite_id)
+			{
+				best_suite = cipher_order_preferred[ipref];
+				break;
+			}
+		}
+	}
+#endif /* HAVE_CRYPTO_SHA256 */
+	if (IPMI_LANPLUS_CIPHER_SUITE_RESERVED == best_suite) {
+		/* IPMI 2.0 spec requires that cipher suite 3 is implemented
+		 * so we should always be able to fall back to that if better
+		 * options are not available. */
+		best_suite = IPMI_LANPLUS_CIPHER_SUITE_3;
+	}
+	lprintf(LOG_INFO, "Using best available cipher suite %d\n", best_suite);
+	return best_suite;
+}
+
 /**
  * ipmi_lanplus_open
  */
@@ -3470,7 +3447,7 @@ ipmi_lanplus_open(struct ipmi_intf * intf)
 	if (!params->retry)
 		params->retry = IPMI_LAN_RETRY;
 
-	if (params->hostname == NULL || strlen((const char *)params->hostname) == 0) {
+	if (!params->hostname || strlen((const char *)params->hostname) == 0) {
 		lprintf(LOG_ERR, "No hostname specified!");
 		return -1;
 	}
@@ -3491,7 +3468,9 @@ ipmi_lanplus_open(struct ipmi_intf * intf)
 	/* Setup our lanplus session state */
 	memset(session, 0, sizeof(struct ipmi_session));
 	session->timeout = params->timeout;
-	memcpy(&session->authcode, &params->authcode_set, sizeof(session->authcode));
+	memcpy(&session->authcode,
+	       &params->authcode_set,
+	       sizeof(session->authcode));
 	session->v2_data.auth_alg         = IPMI_AUTH_RAKP_NONE;
 	session->v2_data.crypt_alg        = IPMI_CRYPT_NONE;
 	session->sol_data.sequence_number = 1;
@@ -3510,15 +3489,30 @@ ipmi_lanplus_open(struct ipmi_intf * intf)
 		goto fail;
 	}
 
-	if (!ipmi_oem_active(intf, "i82571spt") && ! auth_cap.v20_data_available) {
+	if (!ipmi_oem_active(intf, "i82571spt") &&
+	    !auth_cap.v20_data_available)
+	{
 		lprintf(LOG_INFO, "This BMC does not support IPMI v2 / RMCP+");
 		goto fail;
 	}
 
 	/*
-	 * If the open/rakp1/rakp3 sequence encounters a timeout, the whole sequence
-	 * needs to restart. The individual messages are not individually retryable,
-	 * as the session state is advancing.
+	 * If no cipher suite was provided, query the channel cipher suite list
+	 * and pick the best one available
+	 */
+	if (IPMI_LANPLUS_CIPHER_SUITE_RESERVED ==
+	    intf->ssn_params.cipher_suite_id)
+	{
+		ipmi_intf_session_set_cipher_suite_id(
+			intf,
+			ipmi_find_best_cipher_suite(intf)
+		);
+	}
+
+	/*
+	 * If the open/rakp1/rakp3 sequence encounters a timeout, the whole
+	 * sequence needs to restart. The individual messages are not
+	 * individually retryable, as the session state is advancing.
 	 */
 	for (retry = 0; retry < IPMI_LAN_RETRY; retry++) {
 		session->v2_data.session_state = LANPLUS_STATE_PRESESSION;
@@ -3687,21 +3681,19 @@ ipmi_lanplus_keepalive(struct ipmi_intf * intf)
 		return 0;
 
 	rsp = intf->sendrecv(intf, &req);
-	while (rsp != NULL && is_sol_packet(rsp)) {
+	while (rsp && is_sol_packet(rsp)) {
 					 /* rsp was SOL data instead of our answer */
 					 /* since it didn't go through the sol recv, do sol recv stuff here */
 					 ack_sol_packet(intf, rsp);
-					 check_sol_packet_for_new_data(intf, rsp);
+					 check_sol_packet_for_new_data(rsp);
 					 if (rsp->data_len)
 								intf->session->sol_data.sol_input_handler(rsp);
 		rsp = ipmi_lan_poll_recv(intf);
-		if (rsp == NULL) /* the get device id answer never got back, but retry mechanism was bypassed by SOL data */
+		if (!rsp) /* the get device id answer never got back, but retry mechanism was bypassed by SOL data */
 			return 0; /* so get device id command never returned, the connection is still alive */
 		  }
 
-	if (rsp == NULL)
-		return -1;
-	if (rsp->ccode > 0)
+	if (!rsp || rsp->ccode)
 		return -1;
 
 	return 0;
@@ -3728,7 +3720,7 @@ static int ipmi_lanplus_setup(struct ipmi_intf * intf)
 
 static void ipmi_lanp_set_max_rq_data_size(struct ipmi_intf * intf, uint16_t size)
 {
-	if (intf->ssn_params.cipher_suite_id == 3) {
+	if (intf->ssn_params.cipher_suite_id == IPMI_LANPLUS_CIPHER_SUITE_3) {
 		/*
 		 * encrypted payload can only be multiple of 16 bytes
 		 */
@@ -3746,7 +3738,7 @@ static void ipmi_lanp_set_max_rq_data_size(struct ipmi_intf * intf, uint16_t siz
 
 static void ipmi_lanp_set_max_rp_data_size(struct ipmi_intf * intf, uint16_t size)
 {
-	if (intf->ssn_params.cipher_suite_id == 3) {
+	if (intf->ssn_params.cipher_suite_id == IPMI_LANPLUS_CIPHER_SUITE_3) {
 		/*
 		 * encrypted payload can only be multiple of 16 bytes
 		 */