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/*
* Copyright (c) 2002-2013, 2015 Balabit
* Copyright (c) 1998-2013, 2015 Balázs Scheidler
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "correlation-context.h"
#include "logmsg/logmsg.h"
#include "scratch-buffers.h"
#include <string.h>
static gint
_compare_messages_with_trivial_template(gconstpointer a, gconstpointer b, gpointer user_data)
{
LogMessage *am = *(LogMessage **) a;
LogMessage *bm = *(LogMessage **) b;
gssize av_len, bv_len;
LogTemplate *sort_key = (LogTemplate *) user_data;
const gchar *am_key = log_template_get_trivial_value(sort_key, am, &av_len);
const gchar *bm_key = log_template_get_trivial_value(sort_key, bm, &bv_len);
if (am_key == NULL && bm_key == NULL)
return 0;
if (am_key == NULL)
return -1;
if (bm_key == NULL)
return 1;
gssize cmp_len = MIN(av_len, bv_len);
return strncmp(am_key, bm_key, cmp_len);
}
static gint
_compare_messages_with_nontrivial_template(gconstpointer a, gconstpointer b, gpointer user_data)
{
LogMessage *am = *(LogMessage **) a;
LogMessage *bm = *(LogMessage **) b;
LogTemplate *sort_key = (LogTemplate *) user_data;
ScratchBuffersMarker mark;
GString *am_key = scratch_buffers_alloc_and_mark(&mark);
GString *bm_key = scratch_buffers_alloc();
log_template_format(sort_key, am, &DEFAULT_TEMPLATE_EVAL_OPTIONS, am_key);
log_template_format(sort_key, bm, &DEFAULT_TEMPLATE_EVAL_OPTIONS, bm_key);
gint result = strcmp(am_key->str, bm_key->str);
scratch_buffers_reclaim_marked(mark);
return result;
}
void
correlation_context_sort(CorrelationContext *self, LogTemplate *sort_key)
{
if (log_template_is_trivial(sort_key))
g_ptr_array_sort_with_data(self->messages, _compare_messages_with_trivial_template, sort_key);
else
g_ptr_array_sort_with_data(self->messages, _compare_messages_with_nontrivial_template, sort_key);
}
void
correlation_context_init(CorrelationContext *self, const CorrelationKey *key)
{
self->clear = correlation_context_clear_method;
self->messages = g_ptr_array_new();
memcpy(&self->key, key, sizeof(self->key));
if (self->key.pid)
self->key.pid = g_strdup(self->key.pid);
if (self->key.program)
self->key.program = g_strdup(self->key.program);
if (self->key.host)
self->key.host = g_strdup(self->key.host);
self->ref_cnt = 1;
self->free_fn = correlation_context_free_method;
}
void
correlation_context_clear_method(CorrelationContext *self)
{
for (gint i = 0; i < self->messages->len; i++)
{
log_msg_unref((LogMessage *) g_ptr_array_index(self->messages, i));
}
g_ptr_array_set_size(self->messages, 0);
}
void
correlation_context_free_method(CorrelationContext *self)
{
correlation_context_clear(self);
g_ptr_array_free(self->messages, TRUE);
if (self->key.host)
g_free((gchar *) self->key.host);
if (self->key.program)
g_free((gchar *) self->key.program);
if (self->key.pid)
g_free((gchar *) self->key.pid);
g_free(self->key.session_id);
}
CorrelationContext *
correlation_context_new(CorrelationKey *key)
{
CorrelationContext *self = g_new0(CorrelationContext, 1);
correlation_context_init(self, key);
return self;
}
CorrelationContext *
correlation_context_ref(CorrelationContext *self)
{
self->ref_cnt++;
return self;
}
void
correlation_context_unref(CorrelationContext *self)
{
if (--self->ref_cnt == 0)
{
if (self->free_fn)
self->free_fn(self);
g_free(self);
}
}
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