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#include <sys/types.h>
#include <glib.h>
#include <string.h>
#include <stdlib.h>
#include "mem_pool.h"
#include "filter.h"
#include "main.h"
#include "cfg_file.h"
#include "perl.h"
void
insert_result (struct worker_task *task, const char *metric_name, const char *symbol, u_char flag)
{
struct filter_result *result;
struct metric *metric;
struct metric_result *metric_res;
metric = g_hash_table_lookup (task->worker->srv->cfg->metrics, metric_name);
if (metric == NULL) {
return;
}
result = memory_pool_alloc (task->task_pool, sizeof (struct filter_result));
result->symbol = symbol;
result->flag = flag;
metric_res = g_hash_table_lookup (task->results, metric_name);
if (metric_res == NULL) {
/* Create new metric chain */
metric_res = memory_pool_alloc (task->task_pool, sizeof (struct metric_result));
LIST_INIT (&metric_res->results);
metric_res->metric = metric;
g_hash_table_insert (task->results, (gpointer)metric_name, metric_res);
}
LIST_INSERT_HEAD (&metric_res->results, result, next);
}
/*
* Default consolidation function based on factors in config file
*/
double
factor_consolidation_func (struct worker_task *task, const char *metric_name)
{
struct metric_result *metric_res;
struct filter_result *result;
double *factor;
double res = 0.;
metric_res = g_hash_table_lookup (task->results, metric_name);
if (metric_res == NULL) {
return res;
}
LIST_FOREACH (result, &metric_res->results, next) {
if (result->flag) {
factor = g_hash_table_lookup (task->worker->srv->cfg->factors, result->symbol);
if (factor == NULL) {
/* Default multiplier is 1 */
res ++;
}
else {
res += *factor;
}
}
}
return res;
}
/*
* Call perl or C module function for specified part of message
*/
static void
call_filter_by_name (struct worker_task *task, const char *name, enum script_type sc_type, enum filter_type filt_type)
{
struct module_ctx *c_module;
switch (filt_type) {
case C_FILTER:
c_module = g_hash_table_lookup (task->worker->srv->cfg->c_modules, name);
if (c_module) {
switch (filt_type) {
case SCRIPT_HEADER:
c_module->header_filter (task);
break;
case SCRIPT_MIME:
c_module->mime_filter (task);
break;
case SCRIPT_URL:
c_module->url_filter (task);
break;
case SCRIPT_MESSAGE:
c_module->message_filter (task);
break;
}
}
break;
case PERL_FILTER:
switch (filt_type) {
case SCRIPT_HEADER:
perl_call_header_filter (name, task);
break;
case SCRIPT_MIME:
perl_call_mime_filter (name, task);
break;
case SCRIPT_URL:
perl_call_url_filter (name, task);
break;
case SCRIPT_MESSAGE:
perl_call_message_filter (name, task);
break;
}
break;
}
}
static void
metric_process_callback (gpointer key, gpointer value, void *data)
{
struct worker_task *task = (struct worker_task *)data;
struct metric_result *metric_res = (struct metric_result *)value;
if (metric_res->metric->func != NULL) {
metric_res->score = metric_res->metric->func (task, metric_res->metric->name);
}
else {
metric_res->score = factor_consolidation_func (task, metric_res->metric->name);
}
}
static int
continue_process_filters (struct worker_task *task)
{
struct filter *cur = task->save.entry;
cur = LIST_NEXT (cur, next);
/* Note: no breaks in this case! */
switch (task->save.type) {
case SCRIPT_HEADER:
while (cur) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_HEADER);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_HEADER;
return 0;
}
cur = LIST_NEXT (cur, next);
}
/* Process mime filters */
cur = LIST_FIRST (&task->worker->srv->cfg->mime_filters);
case SCRIPT_MIME:
while (cur) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_MIME);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_MIME;
return 0;
}
cur = LIST_NEXT (cur, next);
}
/* Process url filters */
cur = LIST_FIRST (&task->worker->srv->cfg->url_filters);
case SCRIPT_URL:
while (cur) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_URL);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_URL;
return 0;
}
cur = LIST_NEXT (cur, next);
}
/* Process message filters */
cur = LIST_FIRST (&task->worker->srv->cfg->message_filters);
case SCRIPT_MESSAGE:
while (cur) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_MESSAGE);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_MESSAGE;
return 0;
}
cur = LIST_NEXT (cur, next);
}
/* All done */
return 1;
}
}
int
process_filters (struct worker_task *task)
{
struct filter *cur;
if (task->save.saved) {
task->save.saved = 0;
return continue_process_filters (task);
}
/* Process filters in order that they are listed in config file */
LIST_FOREACH (cur, &task->worker->srv->cfg->header_filters, next) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_HEADER);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_HEADER;
return 0;
}
}
LIST_FOREACH (cur, &task->worker->srv->cfg->mime_filters, next) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_MIME);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_MIME;
return 0;
}
}
LIST_FOREACH (cur, &task->worker->srv->cfg->url_filters, next) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_URL);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_URL;
return 0;
}
}
LIST_FOREACH (cur, &task->worker->srv->cfg->message_filters, next) {
call_filter_by_name (task, cur->func_name, cur->type, SCRIPT_MESSAGE);
if (task->save.saved) {
task->save.entry = cur;
task->save.type = SCRIPT_MESSAGE;
return 0;
}
}
/* Process all metrics */
g_hash_table_foreach (task->results, metric_process_callback, task);
return 1;
}
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