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Fix the issue with transaction ID reuse in a single DNS connection.

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- Each transaction ID within a connection is now maintained as
   a queue of DNS::Info logging records.

 - New function added to the queue.bro script to support
   peeking at the new gettable item in the queue without removing it.
This commit is contained in:
Seth Hall 2013-05-17 10:35:08 -04:00
parent 5ff7621328
commit ae9a02140e
3 changed files with 83 additions and 45 deletions
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20
scripts/base/utils/queue.bro
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@ -19,22 +19,29 @@ export {
## s: A :bro:record:`Settings` record configuring the queue.
##
## Returns: An opaque queue record.
global init: function(s: Settings): Queue;
global init: function(s: Settings &default=[]): Queue;
## Put a string onto the beginning of a queue.
## Put a value onto the beginning of a queue.
##
## q: The queue to put the value into.
##
## val: The value to insert into the queue.
global put: function(q: Queue, val: any);
## Get a string from the end of a queue.
## Get a value from the end of a queue.
##
## q: The queue to get the string from.
## q: The queue to get the value from.
##
## Returns: The value gotten from the queue.
global get: function(q: Queue): any;
## Peek at the value at the end of the queue without removing it.
##
## q: The queue to get the value from.
##
## Returns: The value at the end of the queue.
global peek: function(q: Queue): any;
## Merge two queue's together. If any settings are applied
## to the queues, the settings from q1 are used for the new
## merged queue.
@ -103,6 +110,11 @@ function get(q: Queue): any
return ret;
}
function peek(q: Queue): any
{
return q$vals[q$bottom];
}
function merge(q1: Queue, q2: Queue): Queue
{
local ret = init(q1$settings);