Added fragment_start_seq_check to start a reassembly without adding any data.

svn path=/trunk/; revision=22513

diff --git a/epan/reassemble.c b/epan/reassemble.c
index 223822a2c00a112ff58af3ef8fc620a172fd3032..82b4e6b33825a304644d65b161ca557c7a23ccb7 100644 (file)
--- a/epan/reassemble.c
+++ b/epan/reassemble.c
@@ -1691,6 +1691,46 @@ fragment_add_seq_next(tvbuff_t *tvb, int offset, packet_info *pinfo,
            more_frags, REASSEMBLE_FLAGS_NO_FRAG_NUMBER);
 }
 
+void
+fragment_start_seq_check(packet_info *pinfo, guint32 id, GHashTable *fragment_table,
+                        guint32 tot_len)
+{
+       fragment_key key, *new_key;
+       fragment_data *fd_head;
+
+       /* Have we already seen this frame ?*/
+       if (pinfo->fd->flags.visited) {
+               return;
+       }
+
+       /* Create key to search hash with */
+       key.src = pinfo->src;
+       key.dst = pinfo->dst;
+       key.id  = id;
+
+       /* Check if fragment data exist for this key */
+       fd_head = g_hash_table_lookup(fragment_table, &key);
+
+       if (fd_head == NULL) {
+               /* Create list-head. */
+               fd_head = g_mem_chunk_alloc(fragment_data_chunk);
+         
+               fd_head->next = NULL;
+               fd_head->datalen = tot_len;
+               fd_head->offset = 0;
+               fd_head->len = 0;
+               fd_head->flags = FD_BLOCKSEQUENCE|FD_DATALEN_SET;         
+               fd_head->data = NULL;
+               fd_head->reassembled_in = 0;
+               /*
+                * We're going to use the key to insert the fragment,
+                * so copy it to a long-term store.
+                */
+               new_key = fragment_key_copy(&key);
+               g_hash_table_insert(fragment_table, new_key, fd_head);
+       }
+}
+
 fragment_data *
 fragment_end_seq_next(packet_info *pinfo, guint32 id, GHashTable *fragment_table,
                      GHashTable *reassembled_table)

diff --git a/epan/reassemble.h b/epan/reassemble.h
index 7375f55416121f270c4d312255426e70f96aba97..b9dcf5580511d62206bafdb29a79c159d5924057 100644 (file)
--- a/epan/reassemble.h
+++ b/epan/reassemble.h
@@ -217,6 +217,10 @@ fragment_add_seq_next(tvbuff_t *tvb, int offset, packet_info *pinfo, guint32 id,
             GHashTable *fragment_table, GHashTable *reassembled_table,
             guint32 frag_data_len, gboolean more_frags);
 
+extern void
+fragment_start_seq_check(packet_info *pinfo, guint32 id, GHashTable *fragment_table, 
+                        guint32 tot_len);
+
 extern fragment_data *
 fragment_end_seq_next(packet_info *pinfo, guint32 id, GHashTable *fragment_table,
                      GHashTable *reassembled_table);