added simple irc dissector

svn path=/trunk/; revision=1232

1 files changed, 156 insertions, 0 deletions

diff --git a/packet-irc.c b/packet-irc.c
new file mode 100644
index 0000000000..3ac3d57839
--- /dev/null
+++ b/packet-irc.c
@@ -0,0 +1,156 @@
+/* packet-irc.c
+ * Routines for MSX irc packet dissection
+ *
+ * $Id: packet-irc.c,v 1.1 1999/12/06 23:57:51 nneul Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@unicom.net>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copied from packet-tftp.c
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+
+#include <string.h>
+#include <glib.h>
+#include "packet.h"
+
+static int proto_irc = -1;
+static int hf_irc_request = -1;
+static int hf_irc_response = -1;
+static int hf_irc_command = -1;
+
+static gint ett_irc = -1;
+
+void dissect_irc_request(proto_tree *tree, char *line, int offset, int len)
+{
+	proto_tree_add_item_hidden(tree, hf_irc_request,
+		offset, END_OF_FRAME, TRUE);
+	proto_tree_add_text(tree, offset, 
+		END_OF_FRAME, "Request Line: %s", line);
+}
+
+void dissect_irc_response(proto_tree *tree, char *line, int offset, int len)
+{
+	proto_tree_add_item_hidden(tree, hf_irc_response,
+		offset, END_OF_FRAME, TRUE);
+	proto_tree_add_text(tree, offset, 
+		END_OF_FRAME, "Response Line: %s", line);
+}
+
+void
+dissect_irc(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
+{
+	proto_tree      *irc_tree, *ti;
+	char *tmpline;
+	int start, cur, len;
+	const u_char *i = pd+offset;
+
+	if (check_col(fd, COL_PROTOCOL))
+	col_add_str(fd, COL_PROTOCOL, "IRC");
+
+	if (check_col(fd, COL_INFO))
+	{
+		col_add_fstr(fd, COL_INFO, "%s", 
+			(pi.match_port == pi.destport) ? "Request" : "Response");	  
+	}
+
+	if (tree) 
+	{
+		ti = proto_tree_add_item(tree, proto_irc, offset, END_OF_FRAME, NULL);
+		irc_tree = proto_item_add_subtree(ti, ett_irc);
+
+		start = 0;
+		len = 0;
+		tmpline = (char *)g_malloc( pi.captured_len );
+		while ( i < pd + pi.captured_len )
+		{
+			start = i-pd;
+			cur = 0;
+			tmpline[cur] = 0;
+
+			/* copy up to end or cr/nl */
+			while ( i < pd + pi.captured_len && *i != '\r' && *i != '\n' )
+			{
+				tmpline[cur++] = *(i++);
+			}
+			tmpline[cur] = 0;
+
+			/* skip any CR/NL */
+			while ( i < pd + pi.captured_len && 
+				(*i == '\r' || *i == '\n') )
+			{
+				i++;
+			}
+
+			if ( strlen(tmpline) > 0 )
+			{
+				if (pi.match_port == pi.destport)
+				{
+					dissect_irc_request(irc_tree, tmpline, start, len);
+				}
+				else
+				{
+					dissect_irc_response(irc_tree, tmpline, start, len);
+				}
+			}
+		}
+		g_free(tmpline);
+		tmpline = 0;
+	}
+}
+
+void
+proto_register_irc(void)
+{
+	static hf_register_info hf[] = {
+	  { &hf_irc_response,
+	    { "Response",           "irc.response",
+	      FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+	      "TRUE if IRC response" }},
+	  
+	  { &hf_irc_request,
+	    { "Request",            "irc.request",
+	      FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+	      "TRUE if IRC request" }},
+
+	  { &hf_irc_command,
+	    { "Command",            "irc.command",
+	      FT_STRING, BASE_NONE, NULL, 0x0,
+	      "Command associated with request" }}
+	};
+
+	static gint *ett[] = {
+		&ett_irc,
+	};
+	proto_irc = proto_register_protocol("Internet Relay Chat", "irc");
+	proto_register_field_array(proto_irc, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+}