Moved some definitions and functions from packet-osi.{c,h} to

epan/osi-utils.{c,h} to bring all of the epan dependencies into epan.

svn path=/trunk/; revision=3226

1 files changed, 172 insertions, 0 deletions

diff --git a/epan/osi-utils.c b/epan/osi-utils.c
new file mode 100644
index 0000000000..95a7589d78
--- /dev/null
+++ b/epan/osi-utils.c
@@ -0,0 +1,172 @@
+/* osi-utils.c
+ * Routines for ISO/OSI network and transport protocol packet disassembly
+ * Main entrance point and common functions
+ *
+ * $Id: osi-utils.c,v 1.1 2001/04/01 05:48:15 hagbard Exp $
+ * Laurent Deniel <deniel@worldnet.fr>
+ * Ralf Schneider <Ralf.Schneider@t-online.de>
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 
+ * 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
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#ifdef NEED_SNPRINTF_H
+# include "snprintf.h"
+#endif
+
+#include <stdio.h>
+#include <glib.h>
+
+#include "osi-utils.h"
+
+gchar *print_nsap_net( const u_char *buffer, int length)
+{
+  /* to do : NSAP / NET decoding */
+
+  static gchar  str[MAX_NSAP_LEN * 3 + 50]; /* reserve space for nice layout */
+  gchar *cur;
+
+  cur = str;
+
+  if ( (length <= 0 ) || ( length > MAX_NSAP_LEN ) ) {
+    sprintf( str, "<Invalid length of NSAP>");
+    return( str );
+  }
+  if ( ( length == RFC1237_NSAP_LEN ) || ( length == RFC1237_NSAP_LEN + 1 ) ) {
+    cur += sprintf( cur, "%s", print_area( buffer, RFC1237_FULLAREA_LEN ) );
+    cur += sprintf( cur, "%s", print_system_id( buffer + RFC1237_FULLAREA_LEN, 
+                    RFC1237_SYSTEMID_LEN ) );
+    cur += sprintf( cur, "[%02x]", 
+                    buffer[ RFC1237_FULLAREA_LEN + RFC1237_SYSTEMID_LEN ] );
+    if ( length == RFC1237_NSAP_LEN + 1 ) {
+      cur += sprintf( cur, "-%02x", buffer[ length -1 ] );
+    }
+    return ( str );
+  }
+  else {    /* probably format as standard */
+    return( print_area( buffer, length ) );
+  }
+} /* print_nsap */
+
+
+gchar *print_system_id( const u_char *buffer, int length ) {
+  int           tmp;
+  u_char       *cur; 
+  static gchar  str[MAX_SYSTEMID_LEN * 3 + 5]; /* Don't trust exact matching */  
+ 
+  if ( ( length <= 0 ) || ( length > MAX_SYSTEMID_LEN ) ) {
+    sprintf( str, "<Invalid length of SYSTEM ID>");
+    return( str );
+  }  
+ 
+  cur = str;
+  if ( ( 6 == length ) || ( 7 == length ) ) { /* Special case, print as MAC */
+    cur += sprintf(str, "[%02x:%02x:%02x_%02x:%02x:%02x]", buffer[0], buffer[1],
+                    buffer[2], buffer[3], buffer[4], buffer[5] );
+    if ( 7 == length ) {
+      sprintf( cur, "-%02x", buffer[6] );
+    }
+  }
+  else {
+    tmp = 0;
+    while ( tmp < length / 4 ) { /* 16 / 4 == 4 > four Octets left to print */
+      cur += sprintf( str, "%02x%02x%02x%02x.", buffer[tmp++], buffer[tmp++],
+                      buffer[tmp++], buffer[tmp++] );
+    }
+    if ( 1 == tmp ) {   /* Special case for Designated IS */
+      sprintf( --cur, "-%02x", buffer[tmp] );
+    }
+    else {
+      for ( ; tmp < length; ) {  /* print the rest without dot */
+        cur += sprintf( cur, "%02x", buffer[tmp++] );
+      }
+    }
+  }
+  return( str );
+}
+
+gchar *print_area(const u_char *buffer, int length)
+{
+  /* to do : all real area decoding now: NET is assumed if id len is 1 more byte
+   * and take away all these stupid resource consuming local statics
+   */
+  
+  static gchar  str[MAX_AREA_LEN * 3 + 20]; /* reserve space for nice layout */
+  gchar *cur;
+  u_int  tmp  = 0;
+
+  cur = str;
+
+  if (length <= 0 || length > MAX_AREA_LEN) {
+    sprintf( str, "<Invalid length of AREA>");
+    return( str );
+  }
+  
+  if ( (  ( NSAP_IDI_ISODCC          == *buffer )      
+       || ( NSAP_IDI_GOSIP2          == *buffer )
+       )
+       && 
+       (  ( RFC1237_FULLAREA_LEN     ==  length ) 
+       || ( RFC1237_FULLAREA_LEN + 1 ==  length )
+       ) 
+     ) {    /* AFI is good and length is long enough  */
+  
+    if ( length > RFC1237_FULLAREA_LEN + 1 ) {  /* Special Case Designated IS */
+      sprintf( str, "<Invalid length of AREA for DCC / GOSIP AFI>");
+      return( str );
+    }
+ 
+    cur += sprintf( cur, "[%02x|%02x:%02x][%02x|%02x:%02x:%02x|%02x:%02x]", 
+                    buffer[0], buffer[1], buffer[2], buffer[3], buffer[4], 
+                    buffer[5], buffer[6], buffer[7], buffer[8] );
+    cur += sprintf( cur, "[%02x:%02x|%02x:%02x]",
+                    buffer[9], buffer[10],  buffer[11], buffer[12] );
+    if ( RFC1237_FULLAREA_LEN + 1 == length ) {
+      sprintf( cur, "-[%02x]", buffer[20] );
+    }
+    return str;
+  }
+  else { /* print standard format */
+    if ( 4 < length ) { 
+      while ( tmp < length / 4 ) {      /* 16/4==4  four Octets left to print */
+        cur += sprintf( str, "%02x%02x%02x%02x.", buffer[tmp++], buffer[tmp++],
+                        buffer[tmp++], buffer[tmp++] );
+      }
+      if ( 1 == tmp ) {                     /* Special case for Designated IS */
+        sprintf( --cur, "-%02x", buffer[tmp] );
+      }
+      else {
+        for ( ; tmp < length; ) {  /* print the rest without dot */ 
+          cur += sprintf( cur, "%02x", buffer[tmp++] );
+        }
+      } 
+    }
+    return( str );
+  }
+} /* print_area */
+