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Added fragment_start_seq_check to start a reassembly without adding any data. 

svn path=/trunk/; revision=22513
This commit is contained in:
Stig Bjørlykke 2007-08-15 22:24:05 +00:00
parent 84e7d8ca70
commit c6ba6d714d
2 changed files with 44 additions and 0 deletions
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40
epan/reassemble.c
View File

@ -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)

4
epan/reassemble.h
View File

@ -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);