4 files changed, 2525 insertions, 0 deletions

diff --git a/src/plugins/serial/Makefile.am b/src/plugins/serial/Makefile.am
new file mode 100644
index 0000000..5bfbd0d
--- /dev/null
+++ b/src/plugins/serial/Makefile.am
@@ -0,0 +1,38 @@
+# * Copyright (c) 2012 Pigeon Point Systems.  All Rights Reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 
+# Redistribution of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 
+# Redistribution 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.
+# 
+# Neither the name of Pigeon Point Systems, Inc. or the names of
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+# 
+# This software is provided "AS IS," without a warranty of any kind.
+# ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+# INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+# PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+# PIGEON POINT SYSTEMS ("PPS") AND ITS LICENSORS SHALL NOT BE LIABLE
+# FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+# OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.  IN NO EVENT WILL
+# PPS OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
+# OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+# PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
+# LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+# EVEN IF PPS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+MAINTAINERCLEANFILES	= Makefile.in
+
+INCLUDES		= -I$(top_srcdir)/include
+
+EXTRA_LTLIBRARIES	= libintf_serial.la
+noinst_LTLIBRARIES	= @INTF_SERIAL_LIB@
+libintf_serial_la_LIBADD	= $(top_builddir)/lib/libipmitool.la
+libintf_serial_la_SOURCES	= serial_terminal.c serial_basic.c
diff --git a/src/plugins/serial/Makefile.in b/src/plugins/serial/Makefile.in
new file mode 100644
index 0000000..5abad44
--- /dev/null
+++ b/src/plugins/serial/Makefile.in
@@ -0,0 +1,539 @@
+# Makefile.in generated by automake 1.11.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# * Copyright (c) 2012 Pigeon Point Systems.  All Rights Reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 
+# Redistribution of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 
+# Redistribution 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.
+# 
+# Neither the name of Pigeon Point Systems, Inc. or the names of
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+# 
+# This software is provided "AS IS," without a warranty of any kind.
+# ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+# INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+# PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+# PIGEON POINT SYSTEMS ("PPS") AND ITS LICENSORS SHALL NOT BE LIABLE
+# FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+# OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.  IN NO EVENT WILL
+# PPS OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
+# OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+# PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
+# LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+# EVEN IF PPS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
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+DIST_SOURCES = $(libintf_serial_la_SOURCES)
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+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES ctags distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/plugins/serial/serial_basic.c b/src/plugins/serial/serial_basic.c
new file mode 100644
index 0000000..5f4b926
--- /dev/null
+++ b/src/plugins/serial/serial_basic.c
@@ -0,0 +1,1029 @@
+/*
+ * Copyright (c) 2012 Pigeon Point Systems.  All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistribution of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistribution 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.
+ *
+ * Neither the name of Pigeon Point Systems nor the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+ * PIGEON POINT SYSTEMS ("PPS") AND ITS LICENSORS SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+ * OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.  IN NO EVENT WILL
+ * PPS OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
+ * OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+ * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
+ * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+ * EVEN IF PPS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+/* Serial Interface, Basic Mode plugin. */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <termios.h>
+
+#include <ipmitool/ipmi.h>
+#include <ipmitool/ipmi_intf.h>
+#include <ipmitool/helper.h>
+#include <ipmitool/log.h>
+
+#if defined(HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#define SERIAL_BM_MAX_MSG_SIZE	47
+#define SERIAL_BM_MAX_RQ_SIZE	33	/* 40 - 7 */
+#define SERIAL_BM_MAX_RS_SIZE	32	/* 40 - 8 */
+#define	SERIAL_BM_TIMEOUT	5
+#define SERIAL_BM_RETRY_COUNT	5
+#define SERIAL_BM_MAX_BUFFER_SIZE 250
+
+#define BM_START		0xA0
+#define BM_STOP			0xA5
+#define BM_HANDSHAKE	0xA6
+#define BM_ESCAPE		0xAA
+
+/*
+ *	IPMB message header
+ */
+struct ipmb_msg_hdr {
+	unsigned char rsSA;
+	unsigned char netFn;	/* NET FN | RS LUN */
+	unsigned char csum1;
+	unsigned char rqSA;
+	unsigned char rqSeq;	/* RQ SEQ | RQ LUN */
+	unsigned char cmd;
+	unsigned char data[0];
+};
+
+/*
+ *	Send Message command request for IPMB-format
+ */
+struct ipmi_send_message_rq {
+	unsigned char channel;
+	struct ipmb_msg_hdr msg;
+};
+
+/*
+ *	Get Message command response for IPMB-format
+ */
+struct ipmi_get_message_rp {
+	unsigned char completion;
+	unsigned char channel;
+	unsigned char netFn;
+	unsigned char csum1;
+	unsigned char rsSA;
+	unsigned char rqSeq;
+	unsigned char cmd;
+	unsigned char data[0];
+};
+
+/*
+ *	State for the received message
+ */
+enum {
+	MSG_NONE,
+	MSG_IN_PROGRESS,
+	MSG_DONE
+};
+
+/*
+ *	Message parsing context
+ */
+struct  serial_bm_parse_ctx{
+	int state;
+	uint8_t * msg;
+	size_t msg_len;
+	size_t max_len;
+	int escape;
+};
+
+/*
+ *	Receiving context
+ */
+struct serial_bm_recv_ctx {
+	char buffer[SERIAL_BM_MAX_BUFFER_SIZE];
+	size_t buffer_size;
+	size_t max_buffer_size;
+};
+
+/*
+ *	Sending context
+ */
+struct serial_bm_request_ctx {
+	uint8_t rsSA;
+	uint8_t netFn;
+	uint8_t rqSA;
+	uint8_t rqSeq;
+	uint8_t cmd;
+};
+
+/*
+ *	Table of supported baud rates
+ */
+static const struct {
+	int baudinit;
+	int baudrate;
+} rates[] = {
+	{ B2400, 2400 },
+	{ B9600, 9600 },
+	{ B19200, 19200 },
+	{ B38400, 38400 },
+	{ B57600, 57600 },
+	{ B115200, 115200 },
+	{ B230400, 230400 },
+#ifdef B460800
+	{ B460800, 460800 },
+#endif
+};
+
+/*
+ *	Table of special characters
+ */
+static const struct {
+	uint8_t character;
+	uint8_t escape;
+} characters[] = {
+	{ BM_START,		0xB0 },	/* start */
+	{ BM_STOP,		0xB5 },	/* stop */
+	{ BM_HANDSHAKE,	0xB6 },	/* packet handshake */
+	{ BM_ESCAPE,	0xBA },	/* data escape */
+	{ 0x1B, 0x3B }			/* escape */
+};
+
+static int is_system;
+
+/*
+ *	Setup serial interface
+ */
+static int
+serial_bm_setup(struct ipmi_intf * intf)
+{
+	intf->session = malloc(sizeof(struct ipmi_session));
+	if (intf->session == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return -1;
+	}
+	memset(intf->session, 0, sizeof(struct ipmi_session));
+
+	/* setup default LAN maximum request and response sizes */
+	intf->max_request_data_size = SERIAL_BM_MAX_RQ_SIZE;
+	intf->max_response_data_size = SERIAL_BM_MAX_RS_SIZE;
+	return 0;
+}
+
+/*
+ *	Open serial interface
+ */
+static int
+serial_bm_open(struct ipmi_intf * intf)
+{
+	struct termios ti;
+	unsigned int rate = 9600;
+	char *p;
+	int i;
+
+	if (!intf->devfile) {
+		lprintf(LOG_ERR, "Serial device is not specified");
+		return -1;
+	}
+
+	is_system = 0;
+
+	/* check if baud rate is specified */
+	if ((p = strchr(intf->devfile, ':'))) {
+		char * pp;
+
+		/* separate device name from baud rate */
+		*p++ = '\0';
+
+		/* check for second colon */
+		if ((pp = strchr(p, ':'))) {
+			/* this is needed to normally acquire baud rate */
+			*pp++ = '\0';
+
+			/* check if it is a system interface */
+			if (pp[0] == 'S' || pp[0] == 's') {
+				is_system = 1;
+			}
+		}
+
+		if (str2uint(p, &rate)) {
+			lprintf(LOG_ERR, "Invalid baud rate specified\n");
+			return -1;
+		}
+	}
+
+	intf->fd = open(intf->devfile, O_RDWR | O_NONBLOCK, 0);
+	if (intf->fd < 0) {
+		lperror(LOG_ERR, "Could not open device at %s", intf->devfile);
+		return -1;
+	}
+
+	for (i = 0; i < sizeof(rates) / sizeof(rates[0]); i++) {
+		if (rates[i].baudrate == rate) {
+			break;
+		}
+	}
+	if (i >= sizeof(rates) / sizeof(rates[0])) {
+		lprintf(LOG_ERR, "Unsupported baud rate %i specified", rate);
+		return -1;
+	}
+
+	tcgetattr(intf->fd, &ti);
+
+	cfsetispeed(&ti, rates[i].baudinit);
+	cfsetospeed(&ti, rates[i].baudinit);
+
+	/* 8N1 */
+	ti.c_cflag &= ~PARENB;
+	ti.c_cflag &= ~CSTOPB;
+	ti.c_cflag &= ~CSIZE;
+	ti.c_cflag |= CS8;
+
+	/* enable the receiver and set local mode */
+	ti.c_cflag |= (CLOCAL | CREAD);
+
+	/* no flow control */
+	ti.c_cflag &= ~CRTSCTS;
+	ti.c_iflag &= ~(IGNBRK | IGNCR | INLCR | ICRNL | INPCK | ISTRIP
+			| IXON | IXOFF | IXANY);
+#ifdef IUCLC
+        /* Only disable uppercase-to-lowercase mapping on input for
+	   platforms supporting the flag. */
+	ti.c_iflag &= ~(IUCLC);
+#endif
+
+
+	ti.c_oflag &= ~(OPOST);
+	ti.c_lflag &= ~(ICANON | ISIG | ECHO | ECHONL | NOFLSH);
+
+	/* set the new options for the port with flushing */
+	tcsetattr(intf->fd, TCSAFLUSH, &ti);
+
+	if (intf->session->timeout == 0)
+		intf->session->timeout = SERIAL_BM_TIMEOUT;
+	if (intf->session->retry == 0)
+		intf->session->retry = SERIAL_BM_RETRY_COUNT;
+
+	intf->opened = 1;
+
+	return 0;
+}
+
+/*
+ *	Close serial interface
+ */
+static void
+serial_bm_close(struct ipmi_intf * intf)
+{
+	if (intf->opened) {
+		close(intf->fd);
+		intf->fd = -1;
+	}
+
+	if (intf->session) {
+		free(intf->session);
+		intf->session = NULL;
+	}
+
+	intf->opened = 0;
+}
+
+/*
+ *	Allocate sequence number for tracking
+ */
+static uint8_t
+serial_bm_alloc_seq(void)
+{
+	static uint8_t seq = 0;
+	if (++seq == 64) {
+		seq = 0;
+	}
+	return seq;
+}
+
+/*
+ *	Flush the buffers
+ */
+static int
+serial_bm_flush(struct ipmi_intf * intf)
+{
+#if defined(TCFLSH)
+    return ioctl(intf->fd, TCFLSH, TCIOFLUSH);
+#elif defined(TIOCFLUSH)
+    return ioctl(intf->fd, TIOCFLUSH);
+#else
+#   error "unsupported platform, missing flush support (TCFLSH/TIOCFLUSH)"
+#endif
+}
+
+/*
+ *	Return escaped character for the given one
+ */
+static inline uint8_t
+serial_bm_get_escaped_char(uint8_t c)
+{
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		if (characters[i].character == c) {
+			return characters[i].escape;
+		}
+	}
+
+	return c;
+}
+
+/*
+ *	Return unescaped character for the given one
+ */
+static inline uint8_t
+serial_bm_get_unescaped_char(uint8_t c)
+{
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		if (characters[i].escape == c) {
+			return characters[i].character;
+		}
+	}
+
+	return c;
+}
+
+/*
+ *	Send message to serial port
+ */
+static int
+serial_bm_send_msg(struct ipmi_intf * intf, uint8_t * msg, int msg_len)
+{
+	int i, size, tmp = 0;
+	uint8_t * buf, * data;
+
+	if (verbose > 3) {
+		fprintf(stderr, "Sending request:\n");
+		fprintf(stderr, "  rsSA         = 0x%x\n", msg[0]);
+		fprintf(stderr, "  NetFN/rsLUN  = 0x%x\n", msg[1]);
+		fprintf(stderr, "  rqSA         = 0x%x\n", msg[3]);
+		fprintf(stderr, "  rqSeq/rqLUN  = 0x%x\n", msg[4]);
+		fprintf(stderr, "  cmd          = 0x%x\n", msg[5]);
+		if (msg_len > 7) {
+			fprintf(stderr, "  data_len     = %d\n", msg_len - 7);
+			fprintf(stderr, "  data         = %s\n",
+					buf2str(msg + 6, msg_len - 7));
+		}
+	}
+
+	if (verbose > 4) {
+		fprintf(stderr, "Message data:\n");
+		fprintf(stderr, " %s\n", buf2str(msg, msg_len));
+	}
+
+	/* calculate escaped characters number */
+	for (i = 0; i < msg_len; i++) {
+		if (serial_bm_get_escaped_char(msg[i]) != msg[i]) {
+			tmp++;
+		}
+	}
+
+	/* calculate required buffer size */
+	size = msg_len + tmp + 2;
+
+	/* allocate buffer for output data */
+	buf = data = (uint8_t *) alloca(size);
+
+	if (!buf) {
+		lperror(LOG_ERR, "ipmitool: alloca error");
+		return -1;
+	}
+
+	/* start character */
+	*buf++ = 0xA0;
+
+	for (i = 0; i < msg_len; i++) {
+		tmp = serial_bm_get_escaped_char(msg[i]);
+		if (tmp != msg[i]) {
+			*buf++ = 0xAA;
+		}
+
+		*buf++ = tmp;
+	}
+
+	/* stop character */
+	*buf++ = 0xA5;
+
+	if (verbose > 5) {
+		fprintf(stderr, "Sent serial data:\n %s\n", buf2str(data, size));
+	}
+
+	/* write data to serial port */
+	tmp = write(intf->fd, data, size);
+	if (tmp <= 0) {
+		lperror(LOG_ERR, "ipmitool: write error");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ *	This function waits for incoming data
+ */
+static int
+serial_bm_wait_for_data(struct ipmi_intf * intf)
+{
+	int n;
+	struct pollfd pfd;
+
+	pfd.fd = intf->fd;
+	pfd.events = POLLIN;
+	pfd.revents = 0;
+
+	n = poll(&pfd, 1, intf->session->timeout*1000);
+	if (n < 0) {
+		lperror(LOG_ERR, "Poll for serial data failed");
+		return -1;
+	} else if (!n) {
+		return -1;
+	}
+	return 0;
+}
+
+/*
+ *	This function parses incoming data in basic mode format to IPMB message
+ */
+static int
+serial_bm_parse_buffer(const uint8_t * data, int data_len,
+		struct serial_bm_parse_ctx * ctx)
+{
+	int i, tmp;
+
+	for (i = 0; i < data_len; i++) {
+		/* check for start of new message */
+		if (data[i] == BM_START) {
+			ctx->state = MSG_IN_PROGRESS;
+			ctx->escape = 0;
+			ctx->msg_len = 0;
+		/* check if message is not started */
+		} else if (ctx->state != MSG_IN_PROGRESS) {
+			/* skip character */
+			continue;
+		/* continue escape sequence */
+		} else	if (ctx->escape) {
+			/* get original character */
+			tmp = serial_bm_get_unescaped_char(data[i]);
+
+			/* check if not special character */
+			if (tmp == data[i]) {
+				lprintf(LOG_ERR, "ipmitool: bad response");
+				/* reset message state */
+				ctx->state = MSG_NONE;
+				continue;
+			}
+
+			/* check message length */
+			if (ctx->msg_len >= ctx->max_len) {
+				lprintf(LOG_ERR, "ipmitool: response is too long");
+				/* reset message state */
+				ctx->state = MSG_NONE;
+				continue;
+			}
+
+			/* add parsed character */
+			ctx->msg[ctx->msg_len++] = tmp;
+
+			/* clear escape flag */
+			ctx->escape = 0;
+		/* check for escape character */
+		} else if (data[i] == BM_ESCAPE) {
+			ctx->escape = 1;
+			continue;
+		/* check for stop character */
+		} else if (data[i] == BM_STOP) {
+			ctx->state = MSG_DONE;
+			return i + 1;
+		/* check for packet handshake character */
+		} else if (data[i] == BM_HANDSHAKE) {
+			/* just skip it */
+			continue;
+		} else {
+			/* check message length */
+			if (ctx->msg_len >= ctx->max_len) {
+				lprintf(LOG_ERR, "ipmitool: response is too long");
+				return -1;
+			}
+
+			/* add parsed character */
+			ctx->msg[ctx->msg_len++] = data[i];
+		}
+	}
+
+	/* return number of parsed characters */
+	return i;
+}
+
+/*
+ *	Read and parse data from serial port
+ */
+static int
+serial_bm_recv_msg(struct ipmi_intf * intf,
+		struct serial_bm_recv_ctx * recv_ctx,
+		uint8_t * msg_data, size_t msg_len)
+{
+	struct serial_bm_parse_ctx parse_ctx;
+	int rv;
+
+	parse_ctx.state = MSG_NONE;
+	parse_ctx.msg = msg_data;
+	parse_ctx.max_len = msg_len;
+
+	do {
+		/* wait for data in the port */
+		if (serial_bm_wait_for_data(intf)) {
+			return 0;
+		}
+
+		/* read data into buffer */
+		rv = read(intf->fd, recv_ctx->buffer + recv_ctx->buffer_size,
+				recv_ctx->max_buffer_size - recv_ctx->buffer_size);
+
+		if (rv < 0) {
+			lperror(LOG_ERR, "ipmitool: read error");
+			return -1;
+		}
+
+		if (verbose > 5) {
+			fprintf(stderr, "Received serial data:\n %s\n",
+					buf2str(recv_ctx->buffer + recv_ctx->buffer_size, rv));
+		}
+
+		/* increment buffer size */
+		recv_ctx->buffer_size += rv;
+
+		/* parse buffer */
+		rv = serial_bm_parse_buffer(recv_ctx->buffer,
+				recv_ctx->buffer_size, &parse_ctx);
+
+		if (rv < recv_ctx->buffer_size) {
+			/* move non-parsed part of the buffer to the beginning */
+			memmove(recv_ctx->buffer, recv_ctx->buffer + rv,
+					recv_ctx->buffer_size - rv);
+		}
+
+		/* decrement buffer size */
+		recv_ctx->buffer_size -= rv;
+	} while (parse_ctx.state != MSG_DONE);
+
+	if (verbose > 4) {
+		printf("Received message:\n %s\n",
+				buf2str(msg_data, parse_ctx.msg_len));
+	}
+
+	/* received a message */
+	return parse_ctx.msg_len;
+}
+
+/*
+ *	Build IPMB message to be transmitted
+ */
+static int
+serial_bm_build_msg(const struct ipmi_intf * intf,
+		const struct ipmi_rq * req, uint8_t * msg, size_t max_len,
+		struct serial_bm_request_ctx * ctx, int * msg_len
+		)
+{
+	uint8_t * data = msg, seq;
+	struct ipmb_msg_hdr * hdr = (struct ipmb_msg_hdr *) msg;
+	struct ipmi_send_message_rq * inner_rq = NULL, * outer_rq = NULL;
+	int bridging_level;
+
+	/* acquire bridging level */
+	if (intf->target_addr && intf->target_addr != intf->my_addr) {
+		if (intf->transit_addr != 0) {
+			bridging_level = 2;
+		} else {
+			bridging_level = 1;
+		}
+	} else {
+		bridging_level = 0;
+	}
+
+	/* check overall packet length */
+	if(req->msg.data_len + 7 + bridging_level * 8 > max_len) {
+		lprintf(LOG_ERR, "ipmitool: Message data is too long");
+		return -1;
+	}
+
+	/* allocate new sequence number */
+	seq = serial_bm_alloc_seq() << 2;
+
+	if (bridging_level) {
+		/* compose send message request */
+		hdr->netFn = 0x18;
+		hdr->cmd = 0x34;
+
+		/* set pointer to send message request data */
+		outer_rq = (struct ipmi_send_message_rq *) (hdr + 1);
+
+		/* compose the outer send message request */
+		if (bridging_level == 2) {
+			outer_rq->channel = intf->transit_channel | 0x40;
+			outer_rq->msg.rsSA = intf->transit_addr;
+			outer_rq->msg.netFn = 0x18;
+			outer_rq->msg.csum1 = -(outer_rq->msg.rsSA + outer_rq->msg.netFn);
+			outer_rq->msg.rqSA = intf->my_addr;
+			outer_rq->msg.rqSeq = seq;
+			outer_rq->msg.cmd = 0x34;
+
+			/* inner send message request is further */
+			inner_rq = (outer_rq + 1);
+		} else {
+			/* there is only outer send message reuest */
+			inner_rq = outer_rq;
+		}
+
+		/* compose the inner send message request */
+		inner_rq->channel = intf->target_channel | 0x40;
+		inner_rq->msg.rsSA = intf->target_addr;
+		inner_rq->msg.netFn = (req->msg.netfn << 2) | req->msg.lun;
+		inner_rq->msg.csum1 = -(inner_rq->msg.rsSA + inner_rq->msg.netFn);
+		inner_rq->msg.rqSA = intf->my_addr;
+		inner_rq->msg.rqSeq = seq;
+		inner_rq->msg.cmd = req->msg.cmd;
+
+		/* check if interface is the system one */
+		if (is_system) {
+			/* need response to LUN 2 */
+			outer_rq->msg.rqSeq |= 2;
+
+			/* do not track response */
+			outer_rq->channel &= ~0x40;
+
+			/* restore BMC SA if bridging not to primary IPMB channel */
+			if (outer_rq->channel) {
+				outer_rq->msg.rqSA = IPMI_BMC_SLAVE_ADDR;
+			}
+		}
+
+		/* fill-in the second context */
+		ctx[1].rsSA = outer_rq->msg.rsSA;
+		ctx[1].netFn = outer_rq->msg.netFn;
+		ctx[1].rqSA = outer_rq->msg.rqSA;
+		ctx[1].rqSeq = outer_rq->msg.rqSeq;
+		ctx[1].cmd = outer_rq->msg.cmd;
+
+		/* move write pointer */
+		msg = (uint8_t *)(inner_rq + 1);
+	} else {
+		/* compose direct request */
+		hdr->netFn = (req->msg.netfn << 2) | req->msg.lun;
+		hdr->cmd = req->msg.cmd;
+
+		/* move write pointer */
+		msg = (uint8_t *)(hdr + 1);
+	}
+
+	/* fill-in the rest header fields */
+	hdr->rsSA = IPMI_BMC_SLAVE_ADDR;
+	hdr->csum1 = -(hdr->rsSA + hdr->netFn);
+	hdr->rqSA = IPMI_REMOTE_SWID;
+	hdr->rqSeq = seq;
+
+	/* fill-in the first context */
+	ctx[0].rsSA = hdr->rsSA;
+	ctx[0].netFn = hdr->netFn;
+	ctx[0].rqSA = hdr->rqSA;
+	ctx[0].rqSeq = hdr->rqSeq;
+	ctx[0].cmd = hdr->cmd;
+
+	/* write request data */
+	memcpy(msg, req->msg.data, req->msg.data_len);
+
+	/* move write pointer */
+	msg += req->msg.data_len;
+
+	if (bridging_level) {
+		/* write inner message checksum */
+		*msg++ = ipmi_csum(&inner_rq->msg.rqSA, req->msg.data_len + 3);
+
+		/* check for double bridging */
+		if (bridging_level == 2) {
+			/* write outer message checksum */
+			*msg++ = ipmi_csum(&outer_rq->msg.rqSA, 4);
+		}
+
+		/* write overall message checksum */
+		*msg++ = ipmi_csum(&hdr->rqSA, 4);
+	} else {
+		/* write overall message checksum */
+		*msg++ = ipmi_csum(&hdr->rqSA, req->msg.data_len + 3);
+	}
+
+	/* save message length */
+	*msg_len = msg - data;
+
+	/* return bridging level */
+	return bridging_level;
+}
+
+/*
+ *	Wait for request response
+ */
+static int
+serial_bm_wait_response(struct ipmi_intf * intf,
+		struct serial_bm_request_ctx * req_ctx, struct serial_bm_recv_ctx * read_ctx,
+		uint8_t * msg, size_t max_len)
+{
+	struct ipmb_msg_hdr * hdr = (struct ipmb_msg_hdr *) msg;
+	int msg_len, netFn, rqSeq;
+
+	/* receive and match message */
+	while ((msg_len = serial_bm_recv_msg(intf, read_ctx, msg, max_len)) > 0) {
+		/* validate message size */
+		if (msg_len < 8) {
+			lprintf(LOG_ERR, "ipmitool: response is too short");
+			continue;
+		}
+
+		/* validate checksum 1 */
+		if (ipmi_csum(msg, 3)) {
+			lprintf(LOG_ERR, "ipmitool: bad checksum 1");
+			continue;
+		}
+
+		/* validate checksum 2 */
+		if (ipmi_csum(msg + 3, msg_len - 3)) {
+			lprintf(LOG_ERR, "ipmitool: bad checksum 2");
+			continue;
+		}
+
+		/* swap requester and responder LUNs */
+		netFn = ((req_ctx->netFn|4) & ~3) | (req_ctx->rqSeq & 3);
+		rqSeq = (req_ctx->rqSeq & ~3) | (req_ctx->netFn & 3);
+
+		/* check for the waited response */
+		if (hdr->rsSA == req_ctx->rqSA
+				&& hdr->netFn == netFn
+				&& hdr->rqSA == req_ctx->rsSA
+				&& hdr->rqSeq == rqSeq
+				&& hdr->cmd == req_ctx->cmd) {
+			/* check if something new has been parsed */
+			if (verbose > 3) {
+				fprintf(stderr, "Got response:\n");
+				fprintf(stderr, "  rsSA            = 0x%x\n", msg[0]);
+				fprintf(stderr, "  NetFN/rsLUN     = 0x%x\n", msg[1]);
+				fprintf(stderr, "  rqSA            = 0x%x\n", msg[3]);
+				fprintf(stderr, "  rqSeq/rqLUN     = 0x%x\n", msg[4]);
+				fprintf(stderr, "  cmd             = 0x%x\n", msg[5]);
+				fprintf(stderr, "  completion code = 0x%x\n", msg[6]);
+				if (msg_len > 8) {
+					fprintf(stderr, "  data_len        = %d\n", msg_len - 8);
+					fprintf(stderr, "  data            = %s\n",
+							buf2str(msg + 7, msg_len - 8));
+				}
+			}
+
+			/* copy only completion and response data */
+			memmove(msg, hdr + 1, msg_len - sizeof (*hdr) - 1);
+
+			/* update message length */
+			msg_len -= sizeof (*hdr) + 1;
+
+			/* the waited one */
+			break;
+		}
+	}
+
+	return msg_len;
+}
+
+/*
+ *	Get message from receive message queue
+ */
+static int
+serial_bm_get_message(struct ipmi_intf * intf,
+		struct serial_bm_request_ctx * req_ctx,
+		struct serial_bm_recv_ctx * read_ctx,
+		uint8_t * msg, size_t max_len)
+{
+	uint8_t data[SERIAL_BM_MAX_MSG_SIZE];
+	struct serial_bm_request_ctx tmp_ctx;
+	struct ipmi_get_message_rp * rp = (struct ipmi_get_message_rp *) data;
+	struct ipmb_msg_hdr * hdr = (struct ipmb_msg_hdr *) data;
+	clock_t start, tm;
+	int rv, netFn, rqSeq;
+
+	start = clock();
+
+	do {
+		/* fill-in request context */
+		tmp_ctx.rsSA = IPMI_BMC_SLAVE_ADDR;
+		tmp_ctx.netFn = 0x18;
+		tmp_ctx.rqSA = IPMI_REMOTE_SWID;
+		tmp_ctx.rqSeq = serial_bm_alloc_seq() << 2;
+		tmp_ctx.cmd = 0x33;
+
+		/* fill-in request data */
+		hdr->rsSA = tmp_ctx.rsSA;
+		hdr->netFn = tmp_ctx.netFn;
+		hdr->csum1 = ipmi_csum(data, 2);
+		hdr->rqSA = tmp_ctx.rqSA;
+		hdr->rqSeq = tmp_ctx.rqSeq;
+		hdr->cmd = tmp_ctx.cmd;
+		hdr->data[0] = ipmi_csum(&hdr->rqSA, 3);
+
+		/* send request */
+		serial_bm_flush(intf);
+		serial_bm_send_msg(intf, data, 7);
+
+		/* wait for response */
+		rv = serial_bm_wait_response(intf, &tmp_ctx, read_ctx,
+				data, sizeof (data));
+
+		/* check for IO error or timeout */
+		if (rv <= 0) {
+			return rv;
+		}
+
+		/* check completion code */
+		if (rp->completion == 0) {
+			/* swap requester and responder LUNs */
+			netFn = ((req_ctx->netFn|4) & ~3) | (req_ctx->rqSeq & 3);
+			rqSeq = (req_ctx->rqSeq & ~3) | (req_ctx->netFn & 3);
+
+			/* check for the waited response */
+			if (rp->netFn == netFn
+					&& rp->rsSA == req_ctx->rsSA
+					&& rp->rqSeq == rqSeq
+					&& rp->cmd == req_ctx->cmd) {
+				/* copy the rest of message */
+				memcpy(msg, rp->data, rv - sizeof (*rp) - 1);
+				return rv - sizeof (*rp) - 1;
+			}
+		} else if (rp->completion != 0x80) {
+			return 0;
+		}
+
+		tm = clock() - start;
+
+		tm /= CLOCKS_PER_SEC;
+	} while (tm < intf->session->timeout);
+
+	return 0;
+}
+
+static struct ipmi_rs *
+serial_bm_send_request(struct ipmi_intf * intf, struct ipmi_rq * req)
+{
+	static struct ipmi_rs rsp;
+	uint8_t msg[SERIAL_BM_MAX_MSG_SIZE], * resp = msg;
+	struct serial_bm_request_ctx req_ctx[3];
+	struct serial_bm_recv_ctx read_ctx;
+	int retry, rv, msg_len, bridging_level;
+
+	if (!intf->opened && intf->open && intf->open(intf) < 0) {
+		return NULL;
+	}
+
+	/* reset receive context */
+	read_ctx.buffer_size = 0;
+	read_ctx.max_buffer_size = SERIAL_BM_MAX_BUFFER_SIZE;
+
+	/* Send the message and receive the answer */
+	for (retry = 0; retry < intf->session->retry; retry++) {
+		/* build output message */
+		bridging_level = serial_bm_build_msg(intf, req, msg,
+				sizeof (msg), req_ctx, &msg_len);
+		if (msg_len < 0) {
+			return NULL;
+		}
+
+		/* send request */
+		serial_bm_flush(intf);
+		serial_bm_send_msg(intf, msg, msg_len);
+
+		/* wait for response */
+		rv = serial_bm_wait_response(intf, &req_ctx[0],
+				&read_ctx, msg, sizeof (msg));
+
+		/* check for IO error */
+		if (rv < 0) {
+			return NULL;
+		}
+
+		/* check for timeout */
+		if (rv == 0) {
+			continue;
+		}
+
+		/* check for bridging */
+		if (bridging_level && msg[0] == 0) {
+			/* in the case of payload interface we check receive message queue */
+			if (is_system) {
+				/* check message flags */
+				rv = serial_bm_get_message(intf, &req_ctx[1],
+						&read_ctx, msg, sizeof (msg));
+
+				/* check for IO error */
+				if (rv < 0) {
+					return NULL;
+				}
+
+				/* check for timeout */
+				if (rv == 0) {
+					continue;
+				}
+			/* check if response for inner request is not encapsulated */
+			} else if (rv == 1) {
+				/* wait for response for inner request */
+				rv = serial_bm_wait_response(intf, &req_ctx[0],
+						&read_ctx, msg, sizeof (msg));
+
+				/* check for IO error */
+				if (rv < 0) {
+					return NULL;
+				}
+
+				/* check for timeout */
+				if (rv == 0) {
+					continue;
+				}
+			} else {
+				/* skip outer level header */
+				resp = msg + 7;
+				/* decrement response size */
+				rv -= 8;
+			}
+
+			/* check response size */
+			if (resp[0] == 0 && bridging_level == 2 && rv < 8) {
+				lprintf(LOG_ERR, "ipmitool: Message response is too short");
+				/* invalid message length */
+				return NULL;
+			}
+		}
+
+		/* check for double bridging */
+		if (bridging_level == 2 && resp[0] == 0) {
+			/* get completion code */
+			rsp.ccode = resp[7];
+			rsp.data_len = rv - 9;
+			memcpy(rsp.data, resp + 8, rsp.data_len);
+		} else {
+			rsp.ccode = resp[0];
+			rsp.data_len = rv - 1;
+			memcpy(rsp.data, resp + 1, rsp.data_len);
+		}
+
+		/* return response */
+		return &rsp;
+	}
+
+	/* no valid response */
+	return NULL;
+}
+
+int
+serial_bm_set_my_addr(struct ipmi_intf * intf, uint8_t addr)
+{
+	intf->my_addr = addr;
+	return 0;
+}
+
+/*
+ *	Serial BM interface
+ */
+struct ipmi_intf ipmi_serial_bm_intf = {
+	name:		"serial-basic",
+	desc:		"Serial Interface, Basic Mode",
+	setup:		serial_bm_setup,
+	open:		serial_bm_open,
+	close:		serial_bm_close,
+	sendrecv:	serial_bm_send_request,
+	set_my_addr:serial_bm_set_my_addr
+};
diff --git a/src/plugins/serial/serial_terminal.c b/src/plugins/serial/serial_terminal.c
new file mode 100644
index 0000000..41d3753
--- /dev/null
+++ b/src/plugins/serial/serial_terminal.c
@@ -0,0 +1,919 @@
+/*
+ * Copyright (c) 2007-2012 Pigeon Point Systems.  All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistribution of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistribution 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.
+ *
+ * Neither the name of Pigeon Point Systems nor the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+ * PIGEON POINT SYSTEMS ("PPS") AND ITS LICENSORS SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+ * OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.  IN NO EVENT WILL
+ * PPS OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
+ * OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+ * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
+ * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+ * EVEN IF PPS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+/* Serial Interface, Terminal Mode plugin. */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <termios.h>
+
+#include <ipmitool/ipmi.h>
+#include <ipmitool/ipmi_intf.h>
+#include <ipmitool/helper.h>
+#include <ipmitool/log.h>
+
+#if defined(HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#define	IPMI_SERIAL_TIMEOUT		5
+#define IPMI_SERIAL_RETRY		5
+#define IPMI_SERIAL_MAX_RESPONSE	256
+
+/*
+ *	Terminal Mode interface is required to support 40 byte transactions.
+ */
+#define IPMI_SERIAL_MAX_RQ_SIZE	37	/* 40 - 3 */
+#define IPMI_SERIAL_MAX_RS_SIZE	36	/* 40 - 4 */
+
+/*
+ *	IPMB message header
+ */
+struct ipmb_msg_hdr {
+	unsigned char rsSA;
+	unsigned char netFn;	/* NET FN | RS LUN */
+	unsigned char csum1;
+	unsigned char rqSA;
+	unsigned char rqSeq;	/* RQ SEQ | RQ LUN */
+	unsigned char cmd;
+	unsigned char data[0];
+};
+
+/*
+ *	Send Message command request for IPMB-format
+ */
+struct ipmi_send_message_rq {
+	unsigned char channel;
+	struct ipmb_msg_hdr msg;
+};
+
+/*
+ *	Get Message command response for IPMB-format
+ */
+struct ipmi_get_message_rp {
+	unsigned char completion;
+	unsigned char channel;
+	unsigned char netFn;
+	unsigned char csum1;
+	unsigned char rsSA;
+	unsigned char rqSeq;
+	unsigned char cmd;
+	unsigned char data[0];
+};
+
+/*
+ *	Terminal mode message header
+ */
+struct serial_term_hdr {
+	unsigned char netFn;
+	unsigned char seq;
+	unsigned char cmd;
+};
+
+/*
+ *	Sending context
+ */
+struct serial_term_request_ctx {
+	uint8_t netFn;
+	uint8_t sa;
+	uint8_t seq;
+	uint8_t cmd;
+};
+
+/*
+ *	Table of supported baud rates
+ */
+static const struct {
+	int baudinit;
+	int baudrate;
+} rates[] = {
+	{ B2400, 2400 },
+	{ B9600, 9600 },
+	{ B19200, 19200 },
+	{ B38400, 38400 },
+	{ B57600, 57600 },
+	{ B115200, 115200 },
+	{ B230400, 230400 },
+#ifdef B460800
+	{ B460800, 460800 },
+#endif
+};
+
+static int is_system;
+
+static int
+ipmi_serial_term_open(struct ipmi_intf * intf)
+{
+	struct termios ti;
+	unsigned int rate = 9600;
+	char *p;
+	int i;
+
+	if (!intf->devfile) {
+		lprintf(LOG_ERR, "Serial device is not specified");
+		return -1;
+	}
+
+	is_system = 0;
+
+	/* check if baud rate is specified */
+	if ((p = strchr(intf->devfile, ':'))) {
+		char * pp;
+
+		/* separate device name from baud rate */
+		*p++ = '\0';
+
+		/* check for second colon */
+		if ((pp = strchr(p, ':'))) {
+			/* this is needed to normally acquire baud rate */
+			*pp++ = '\0';
+
+			/* check if it is a system interface */
+			if (pp[0] == 'S' || pp[0] == 's') {
+				is_system = 1;
+			}
+		}
+
+		if (str2uint(p, &rate)) {
+			lprintf(LOG_ERR, "Invalid baud rate specified\n");
+			return -1;
+		}
+	}
+
+	intf->fd = open(intf->devfile, O_RDWR | O_NONBLOCK, 0);
+	if (intf->fd < 0) {
+		lperror(LOG_ERR, "Could not open device at %s", intf->devfile);
+		return -1;
+	}
+
+	for (i = 0; i < sizeof(rates) / sizeof(rates[0]); i++) {
+		if (rates[i].baudrate == rate) {
+			break;
+		}
+	}
+	if (i >= sizeof(rates) / sizeof(rates[0])) {
+		lprintf(LOG_ERR, "Unsupported baud rate %i specified", rate);
+		return -1;
+	}
+
+	tcgetattr(intf->fd, &ti);
+
+	cfsetispeed(&ti, rates[i].baudinit);
+	cfsetospeed(&ti, rates[i].baudinit);
+
+	/* 8N1 */
+	ti.c_cflag &= ~PARENB;
+	ti.c_cflag &= ~CSTOPB;
+	ti.c_cflag &= ~CSIZE;
+	ti.c_cflag |= CS8;
+
+	/* enable the receiver and set local mode */
+	ti.c_cflag |= (CLOCAL | CREAD);
+
+	/* no flow control */
+	ti.c_cflag &= ~CRTSCTS;
+	ti.c_iflag &= ~(IGNBRK | IGNCR | INLCR | ICRNL | INPCK | ISTRIP
+			| IXON | IXOFF | IXANY);
+#ifdef IUCLC
+        /* Only disable uppercase-to-lowercase mapping on input for
+	   platforms supporting the flag. */
+	ti.c_iflag &= ~(IUCLC);
+#endif
+
+	ti.c_oflag &= ~(OPOST);
+	ti.c_lflag &= ~(ICANON | ISIG | ECHO | ECHONL | NOFLSH);
+
+	/* set the new options for the port with flushing */
+	tcsetattr(intf->fd, TCSAFLUSH, &ti);
+
+	if (intf->session->timeout == 0)
+		intf->session->timeout = IPMI_SERIAL_TIMEOUT;
+	if (intf->session->retry == 0)
+		intf->session->retry = IPMI_SERIAL_RETRY;
+
+	intf->opened = 1;
+
+	return 0;
+}
+
+static void
+ipmi_serial_term_close(struct ipmi_intf * intf)
+{
+	if (intf->opened) {
+		close(intf->fd);
+		intf->fd = -1;
+	}
+
+	if (intf->session) {
+		free(intf->session);
+		intf->session = NULL;
+	}
+
+	intf->opened = 0;
+}
+
+/*
+ *	This function waits for incoming byte during timeout (ms).
+ */
+static int
+serial_wait_for_data(struct ipmi_intf * intf)
+{
+	int n;
+	struct pollfd pfd;
+
+	pfd.fd = intf->fd;
+	pfd.events = POLLIN;
+	pfd.revents = 0;
+
+	n = poll(&pfd, 1, intf->session->timeout*1000);
+	if (n < 0) {
+		lperror(LOG_ERR, "Poll for serial data failed");
+		return -1;
+	} else if (!n) {
+		return -1;
+	}
+	return 0;
+}
+
+/*
+ *	Read a line from serial port
+ *	Returns > 0 if there is a line, < 0 on error or timeout
+ */
+static int
+serial_read_line(struct ipmi_intf * intf, char *str, int len)
+{
+	int rv, i;
+
+	*str = 0;
+	i = 0;
+	while (i < len) {
+		if (serial_wait_for_data(intf)) {
+			return -1;
+		}
+		rv = read(intf->fd, str + i, 1);
+		if (rv < 0) {
+			return -1;
+		} else if (!rv) {
+			lperror(LOG_ERR, "Serial read failed: %s", strerror(errno));
+			return -1;
+		}
+		if (str[i] == '\n' || str[i] == '\r') {
+			if (verbose > 4) {
+				char c = str[i];
+				str[i] = '\0';
+				fprintf(stderr, "Received data: %s\n", str);
+				str[i] = c;
+			}
+			return i + 1;
+		} else {
+			i++;
+		}
+	}
+
+	lprintf(LOG_ERR, "Serial data is too long");
+	return -1;
+}
+
+/*
+ *	Send zero-terminated string to serial port
+ *	Returns the string length or negative error code
+ */
+static int
+serial_write_line(struct ipmi_intf * intf, const char *str)
+{
+	int rv, cnt = 0;
+	int cb = strlen(str);
+
+	while (cnt < cb) {
+		rv = write(intf->fd, str + cnt, cb - cnt);
+		if (rv < 0) {
+			return -1;
+		} else if (rv == 0) {
+			return -1;
+		}
+		cnt += rv;
+	}
+
+	return cnt;
+}
+
+/*
+ *	Flush the buffers
+ */
+static int
+serial_flush(struct ipmi_intf * intf)
+{
+#if defined(TCFLSH)
+    return ioctl(intf->fd, TCFLSH, TCIOFLUSH);
+#elif defined(TIOCFLUSH)
+    return ioctl(intf->fd, TIOCFLUSH);
+#else
+#   error "unsupported platform, missing flush support (TCFLSH/TIOCFLUSH)"
+#endif
+
+}
+
+/*
+ *	Receive IPMI response from the device
+ *	Len: buffer size
+ *	Returns: -1 or response lenth on success
+ */
+static int
+recv_response(struct ipmi_intf * intf, unsigned char *data, int len)
+{
+	char hex_rs[IPMI_SERIAL_MAX_RESPONSE * 3];
+	int i, j, resp_len = 0;
+	unsigned long rv;
+	char *p, *pp;
+	char ch, str_hex[3];
+
+	p = hex_rs;
+	while (1) {
+		if ((rv = serial_read_line(intf, p, sizeof(hex_rs) - resp_len)) < 0) {
+			/* error */
+			return -1;
+		}
+		p += rv;
+		resp_len += rv;
+		if (*(p - 2) == ']' && (*(p - 1) == '\n' || *(p - 1) == '\r')) {
+			*p = 0;
+			break;
+		}
+	}
+
+	p = strrchr(hex_rs, '[');
+	if (!p) {
+		lprintf(LOG_ERR, "Serial response is invalid");
+		return -1;
+	}
+
+	p++;
+	pp = strchr(p, ']');
+	if (!pp) {
+		lprintf(LOG_ERR, "Serial response is invalid");
+		return -1;
+	}
+	*pp = 0;
+
+	/* was it an error? */
+	if (strncmp(p, "ERR ", 4) == 0) {
+		serial_write_line(intf, "\r\r\r\r");
+		sleep(1);
+		serial_flush(intf);
+		errno = 0;
+		rv = strtoul(p + 4, &p, 16);
+		if ((rv && rv < 0x100 && *p == '\0')
+				|| (rv == 0 && !errno)) {
+			/* The message didn't get it through. The upper
+			   level will have to re-send */
+			return 0;
+		} else {
+			lprintf(LOG_ERR, "Serial response is invalid");
+			return -1;
+		}
+	}
+
+	/* this is needed for correct string to long conversion */
+	str_hex[2] = 0;
+
+	/* parse the response */
+	i = 0;
+	j = 0;
+	while (*p) {
+		if (i >= len) {
+			lprintf(LOG_ERR, "Serial response is too long(%d, %d)", i, len);
+			return -1;
+		}
+		ch = *(p++);
+		if (isxdigit(ch)) {
+			str_hex[j++] = ch;
+		} else {
+			if (j == 1 || !isspace(ch)) {
+				lprintf(LOG_ERR, "Serial response is invalid");
+				return -1;
+			}
+		}
+		if (j == 2) {
+			unsigned long tmp;
+			errno = 0;
+			/* parse the hex number */
+			tmp = strtoul(str_hex, NULL, 16);
+			if ( tmp > 0xFF || ( !tmp && errno ) ) {
+				lprintf(LOG_ERR, "Serial response is invalid");
+				return -1;
+			}
+			data[i++] = tmp;
+			j = 0;
+		}
+	}
+
+	return i;
+}
+
+/*
+ *	Allocate sequence number for tracking
+ */
+static uint8_t
+serial_term_alloc_seq(void)
+{
+	static uint8_t seq = 0;
+	if (++seq == 64) {
+		seq = 0;
+	}
+	return seq;
+}
+
+/*
+ *	Build IPMB message to be transmitted
+ */
+static int
+serial_term_build_msg(const struct ipmi_intf * intf,
+		const struct ipmi_rq * req, uint8_t * msg, size_t max_len,
+		struct serial_term_request_ctx * ctx, int * msg_len)
+{
+	uint8_t * data = msg, seq;
+	struct serial_term_hdr * term_hdr = (struct serial_term_hdr *) msg;
+	struct ipmi_send_message_rq * outer_rq = NULL;
+	struct ipmi_send_message_rq * inner_rq = NULL;
+	int bridging_level;
+
+	/* acquire bridging level */
+	if (intf->target_addr && intf->target_addr != intf->my_addr) {
+		if (intf->transit_addr != 0) {
+			bridging_level = 2;
+		} else {
+			bridging_level = 1;
+		}
+	} else {
+		bridging_level = 0;
+	}
+
+	/* check overall packet length */
+	if(req->msg.data_len + 3 + bridging_level * 8 > max_len) {
+		lprintf(LOG_ERR, "ipmitool: Message data is too long");
+		return -1;
+	}
+
+	/* allocate new sequence number */
+	seq = serial_term_alloc_seq() << 2;
+
+	/* check for bridging */
+	if (bridging_level) {
+		/* compose terminal message header */
+		term_hdr->netFn = 0x18;
+		term_hdr->seq = seq;
+		term_hdr->cmd = 0x34;
+
+		/* set pointer to send message request data */
+		outer_rq = (struct ipmi_send_message_rq *) (term_hdr + 1);
+
+		if (bridging_level == 2) {
+			/* compose the outer send message request */
+			outer_rq->channel = intf->transit_channel | 0x40;
+			outer_rq->msg.rsSA = intf->transit_addr;
+			outer_rq->msg.netFn = 0x18;
+			outer_rq->msg.csum1 = -(outer_rq->msg.rsSA + outer_rq->msg.netFn);
+			outer_rq->msg.rqSA = intf->my_addr;
+			outer_rq->msg.rqSeq = seq;
+			outer_rq->msg.cmd = 0x34;
+
+			/* inner request is further */
+			inner_rq = (outer_rq + 1);
+		} else {
+			/* there is only one header */
+			inner_rq = outer_rq;
+		}
+
+		/* compose the inner send message request */
+		inner_rq->channel = intf->target_channel | 0x40;
+		inner_rq->msg.rsSA = intf->target_addr;
+		inner_rq->msg.netFn = (req->msg.netfn << 2) | req->msg.lun;
+		inner_rq->msg.csum1 = -(inner_rq->msg.rsSA + inner_rq->msg.netFn);
+		inner_rq->msg.rqSA = intf->my_addr;
+		inner_rq->msg.rqSeq = seq;
+		inner_rq->msg.cmd = req->msg.cmd;
+
+		/* check if interface is the system one */
+		if (is_system) {
+			/* need response to LUN 2 */
+			outer_rq->msg.rqSeq |= 2;
+
+			/* do not track response */
+			outer_rq->channel &= ~0x40;
+
+			/* restore BMC SA if bridging not to primary IPMB channel */
+			if (outer_rq->channel) {
+				outer_rq->msg.rqSA = IPMI_BMC_SLAVE_ADDR;
+			}
+		}
+
+		/* fill the second context */
+		ctx[1].netFn = outer_rq->msg.netFn;
+		ctx[1].sa = outer_rq->msg.rsSA;
+		ctx[1].seq = outer_rq->msg.rqSeq;
+		ctx[1].cmd = outer_rq->msg.cmd;
+
+		/* move write pointer */
+		msg = (uint8_t *)(inner_rq + 1);
+	} else {
+		/* compose terminal message header */
+		term_hdr->netFn = (req->msg.netfn << 2) | req->msg.lun;
+		term_hdr->seq = seq;
+		term_hdr->cmd = req->msg.cmd;
+
+		/* move write pointer */
+		msg = (uint8_t *)(term_hdr + 1);
+	}
+
+	/* fill the first context */
+	ctx[0].netFn = term_hdr->netFn;
+	ctx[0].seq = term_hdr->seq;
+	ctx[0].cmd = term_hdr->cmd;
+
+	/* write request data */
+	memcpy(msg, req->msg.data, req->msg.data_len);
+
+	/* move write pointer */
+	msg += req->msg.data_len;
+
+	if (bridging_level) {
+		/* write inner message checksum */
+		*msg++ = ipmi_csum(&inner_rq->msg.rqSA, req->msg.data_len + 3);
+
+		/* check for double bridging */
+		if (bridging_level == 2) {
+			/* write outer message checksum */
+			*msg++ = ipmi_csum(&outer_rq->msg.rqSA, 4);
+		}
+	}
+
+
+	/* save message length */
+	*msg_len = msg - data;
+
+	/* return bridging level */
+	return bridging_level;
+}
+
+/*
+ *	Send message to serial port
+ */
+static int
+serial_term_send_msg(struct ipmi_intf * intf, uint8_t * msg, int msg_len)
+{
+	int i, size, tmp = 0;
+	uint8_t * buf, * data;
+
+	if (verbose > 3) {
+		fprintf(stderr, "Sending request:\n");
+		fprintf(stderr, "  NetFN/rsLUN  = 0x%x\n", msg[0]);
+		fprintf(stderr, "  rqSeq        = 0x%x\n", msg[1]);
+		fprintf(stderr, "  cmd          = 0x%x\n", msg[2]);
+		if (msg_len > 7) {
+			fprintf(stderr, "  data_len     = %d\n", msg_len - 3);
+			fprintf(stderr, "  data         = %s\n",
+					buf2str(msg + 3, msg_len - 3));
+		}
+	}
+
+	if (verbose > 4) {
+		fprintf(stderr, "Message data:\n");
+		fprintf(stderr, " %s\n", buf2str(msg, msg_len));
+	}
+
+	/* calculate required buffer size */
+	size = msg_len * 2 + 4;
+
+	/* allocate buffer for output data */
+	buf = data = (uint8_t *) alloca(size);
+
+	if (!buf) {
+		lperror(LOG_ERR, "ipmitool: alloca error");
+		return -1;
+	}
+
+	/* start character */
+	*buf++ = '[';
+
+	/* body */
+	for (i = 0; i < msg_len; i++) {
+		buf += sprintf( buf, "%02x", msg[i]);
+	}
+
+	/* stop character */
+	*buf++ = ']';
+
+	/* carriage return */
+	*buf++ = '\r';
+
+	/* line feed */
+	*buf++ = '\n';
+
+	/* write data to serial port */
+	tmp = write(intf->fd, data, size);
+	if (tmp <= 0) {
+		lperror(LOG_ERR, "ipmitool: write error");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ *	Wait for request response
+ */
+static int
+serial_term_wait_response(struct ipmi_intf * intf,
+		struct serial_term_request_ctx * req_ctx,
+		uint8_t * msg, size_t max_len)
+{
+	struct serial_term_hdr * hdr = (struct serial_term_hdr *) msg;
+	int msg_len;
+
+	/* wait for response(s) */
+	do {
+		/* receive message */
+		msg_len = recv_response(intf, msg, max_len);
+
+		/* check if valid message received  */
+		if (msg_len > 0) {
+			/* validate message size */
+			if (msg_len < 4) {
+				/* either bad response or non-related message */
+				continue;
+			}
+
+			/* check for the waited response */
+			if (hdr->netFn == (req_ctx->netFn|4)
+					&& (hdr->seq & ~3) == req_ctx->seq
+					&& hdr->cmd == req_ctx->cmd) {
+				/* check if something new has been parsed */
+				if (verbose > 3) {
+					fprintf(stderr, "Got response:\n");
+					fprintf(stderr, "  NetFN/rsLUN     = 0x%x\n", msg[0]);
+					fprintf(stderr, "  rqSeq/Bridge    = 0x%x\n", msg[1]);
+					fprintf(stderr, "  cmd             = 0x%x\n", msg[2]);
+					fprintf(stderr, "  completion code = 0x%x\n", msg[3]);
+					if (msg_len > 8) {
+						fprintf(stderr, "  data_len        = %d\n",
+								msg_len - 4);
+						fprintf(stderr, "  data            = %s\n",
+								buf2str(msg + 4, msg_len - 4));
+					}
+				}
+
+				/* move to start from completion code */
+				memmove(msg, hdr + 1, msg_len - sizeof (*hdr));
+
+				/* the waited one */
+				return msg_len - sizeof (*hdr);
+			}
+		}
+	} while (msg_len > 0);
+
+	return 0;
+}
+
+/*
+ *	Get message from receive message queue
+ */
+static int
+serial_term_get_message(struct ipmi_intf * intf,
+		struct serial_term_request_ctx * req_ctx,
+		uint8_t * msg, size_t max_len)
+{
+	uint8_t data[IPMI_SERIAL_MAX_RESPONSE];
+	struct serial_term_request_ctx tmp_ctx;
+	struct ipmi_get_message_rp * rp = (struct ipmi_get_message_rp *) data;
+	struct serial_term_hdr hdr;
+	clock_t start, tm;
+	int rv, netFn, rqSeq;
+
+	start = clock();
+
+	do {
+		/* fill-in request context */
+		tmp_ctx.netFn = 0x18;
+		tmp_ctx.seq = serial_term_alloc_seq() << 2;
+		tmp_ctx.cmd = 0x33;
+
+		/* fill-in request data */
+		hdr.netFn = tmp_ctx.netFn;
+		hdr.seq = tmp_ctx.seq;
+		hdr.cmd = tmp_ctx.cmd;
+
+		/* send request */
+		serial_flush(intf);
+		serial_term_send_msg(intf, (uint8_t *) &hdr, 3);
+
+		/* wait for response */
+		rv = serial_term_wait_response(intf, &tmp_ctx, data, sizeof (data));
+
+		/* check for IO error or timeout */
+		if (rv <= 0) {
+			return rv;
+		}
+
+		netFn = (req_ctx->netFn & ~3)|(req_ctx->seq & 3)|4;
+		rqSeq = req_ctx->seq & ~3;
+
+		/* check completion code */
+		if (rp->completion == 0) {
+			/* check for the waited response */
+			if (rp->netFn == netFn
+					&& rp->rsSA == req_ctx->sa
+					&& rp->rqSeq == rqSeq
+					&& rp->cmd == req_ctx->cmd) {
+				/* copy the rest of message */
+				memcpy(msg, rp + 1, rv - sizeof (*rp) - 1);
+				return rv - sizeof (*rp) - 1;
+			}
+		} else if (rp->completion != 0x80) {
+			return 0;
+		}
+
+		tm = clock() - start;
+
+		tm /= CLOCKS_PER_SEC;
+	} while (tm < intf->session->timeout);
+
+	return 0;
+}
+
+static struct ipmi_rs *
+ipmi_serial_term_send_cmd(struct ipmi_intf * intf, struct ipmi_rq * req)
+{
+	static struct ipmi_rs rsp;
+	uint8_t msg[IPMI_SERIAL_MAX_RESPONSE], * resp = msg;
+	struct serial_term_request_ctx req_ctx[2];
+	int retry, rv, msg_len, bridging_level;
+
+	if (!intf->opened && intf->open && intf->open(intf) < 0) {
+		return NULL;
+	}
+
+	/* Send the message and receive the answer */
+	for (retry = 0; retry < intf->session->retry; retry++) {
+		/* build output message */
+		bridging_level = serial_term_build_msg(intf, req, msg,
+				sizeof (msg), req_ctx, &msg_len);
+		if (msg_len < 0) {
+			return NULL;
+		}
+
+		/* send request */
+		serial_flush(intf);
+		serial_term_send_msg(intf, msg, msg_len);
+
+		/* wait for response */
+		rv = serial_term_wait_response(intf, &req_ctx[0], msg, sizeof (msg));
+
+		/* check for IO error */
+		if (rv < 0) {
+			return NULL;
+		}
+
+		/* check for timeout */
+		if (rv == 0) {
+			continue;
+		}
+
+		/* check for bridging */
+		if (bridging_level && msg[0] == 0) {
+			/* in the case of payload interface we check receive message queue */
+			if (is_system) {
+				/* check message flags */
+				rv = serial_term_get_message(intf, &req_ctx[1],
+						msg, sizeof (msg));
+
+				/* check for IO error */
+				if (rv < 0) {
+					return NULL;
+				}
+
+				/* check for timeout */
+				if (rv == 0) {
+					continue;
+				}
+			/* check if response for inner request is not encapsulated */
+			} else if (rv == 1) {
+				/* wait for response for inner request */
+				rv = serial_term_wait_response(intf, &req_ctx[1],
+						msg, sizeof (msg));
+
+				/* check for IO error */
+				if (rv < 0) {
+					return NULL;
+				}
+
+				/* check for timeout */
+				if (rv == 0) {
+					continue;
+				}
+			} else {
+				/* skip outer level header */
+				resp = msg + sizeof (struct ipmb_msg_hdr) + 1;
+				/* decrement response size */
+				rv -=  + sizeof (struct ipmb_msg_hdr) + 2;
+			}
+
+			/* check response size */
+			if (resp[0] == 0 && bridging_level == 2 && rv < 8) {
+				lprintf(LOG_ERR, "ipmitool: Message response is too short");
+				/* invalid message length */
+				return NULL;
+			}
+		}
+
+		/* check for double bridging */
+		if (bridging_level == 2 && resp[0] == 0) {
+			/* get completion code */
+			rsp.ccode = resp[7];
+			rsp.data_len = rv - 9;
+			memcpy(rsp.data, resp + 8, rsp.data_len);
+		} else {
+			rsp.ccode = resp[0];
+			rsp.data_len = rv - 1;
+			memcpy(rsp.data, resp + 1, rsp.data_len);
+		}
+
+		/* return response */
+		return &rsp;
+	}
+
+	/* no valid response */
+	return NULL;
+}
+
+static int
+ipmi_serial_term_setup(struct ipmi_intf * intf)
+{
+	intf->session = malloc(sizeof(struct ipmi_session));
+	if (intf->session == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return -1;
+	}
+
+	memset(intf->session, 0, sizeof(struct ipmi_session));
+
+	/* setup default LAN maximum request and response sizes */
+	intf->max_request_data_size = IPMI_SERIAL_MAX_RQ_SIZE;
+	intf->max_response_data_size = IPMI_SERIAL_MAX_RS_SIZE;
+	return 0;
+}
+
+int
+ipmi_serial_term_set_my_addr(struct ipmi_intf * intf, uint8_t addr)
+{
+	intf->my_addr = addr;
+	return 0;
+}
+
+struct ipmi_intf ipmi_serial_term_intf = {
+	name:		"serial-terminal",
+	desc:		"Serial Interface, Terminal Mode",
+	setup:		ipmi_serial_term_setup,
+	open:		ipmi_serial_term_open,
+	close:		ipmi_serial_term_close,
+	sendrecv:	ipmi_serial_term_send_cmd,
+	set_my_addr:ipmi_serial_term_set_my_addr
+};