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#include <assert.h>
#include <MESA/MESA_prof_load.h>
#include "sce.h"
#include "log.h"
#include "global_metrics.h"
/******************************************************************************
* Struct Metadata
******************************************************************************/
int metadata_isempty(struct metadata *meta)
{
if (meta->write_ref == 0)
{
return 1;
}
else
{
return 0;
}
}
void metadata_copy(struct metadata *dst, struct metadata *src)
{
dst->write_ref++;
dst->session_id = src->session_id;
dst->rehash_index = src->rehash_index;
dst->raw_data = NULL;
dst->raw_len = 0;
dst->l7offset = src->l7offset;
dst->direction = src->direction;
dst->is_ctrl_pkt = src->is_ctrl_pkt;
dst->is_decrypted = src->is_decrypted;
sids_copy(&dst->sids, &src->sids);
route_ctx_copy(&dst->route_ctx, &src->route_ctx);
}
char *memdup(const char *src, int len)
{
if (src == NULL || len == 0)
{
return NULL;
}
char *dst = (char *)calloc(len + 1, sizeof(char));
memcpy(dst, src, len);
return dst;
}
/******************************************************************************
* Struct Session Ctx
******************************************************************************/
struct session_ctx *session_ctx_new()
{
struct session_ctx *session_ctx = (struct session_ctx *)calloc(1, sizeof(struct session_ctx));
assert(session_ctx != NULL);
mutable_array_init(&session_ctx->rule_ids);
return session_ctx;
}
void session_ctx_free(struct session_ctx *session_ctx)
{
if (session_ctx)
{
if (session_ctx->session_addr)
{
free(session_ctx->session_addr);
session_ctx->session_addr = NULL;
}
if (session_ctx->ctrl_packet_header_data)
{
free(session_ctx->ctrl_packet_header_data);
session_ctx->ctrl_packet_header_data = NULL;
}
if (session_ctx->chaining_raw)
{
selected_chaining_destory(session_ctx->chaining_raw);
session_ctx->chaining_raw = NULL;
}
if (session_ctx->chaining_decrypted)
{
selected_chaining_destory(session_ctx->chaining_decrypted);
session_ctx->chaining_decrypted = NULL;
}
free(session_ctx);
session_ctx = 0;
}
}
/******************************************************************************
* Struct SCE Ctx
******************************************************************************/
struct sce_ctx *sce_ctx_create(const char *profile)
{
struct sce_ctx *sce_ctx = (struct sce_ctx *)calloc(1, sizeof(struct sce_ctx));
MESA_load_profile_int_def(profile, "system", "enable_debug", (int *)&(sce_ctx->enable_debug), 0);
MESA_load_profile_int_def(profile, "system", "enable_send_log", (int *)&(sce_ctx->enable_send_log), 0);
MESA_load_profile_int_def(profile, "system", "firewall_sids", (int *)&(sce_ctx->firewall_sids), 1001);
MESA_load_profile_int_def(profile, "system", "nr_worker_threads", (int *)&(sce_ctx->nr_worker_threads), 8);
MESA_load_profile_uint_range(profile, "system", "cpu_affinity_mask", MAX_THREAD_NUM, (unsigned int *)sce_ctx->cpu_affinity_mask);
MESA_load_profile_int_def(profile, "system", "ts_update_interval_ms", (int *)&(sce_ctx->ts_update_interval_ms), 1);
sce_ctx->nr_worker_threads = MIN(sce_ctx->nr_worker_threads, MAX_THREAD_NUM);
CPU_ZERO(&sce_ctx->coremask);
for (int i = 0; i < sce_ctx->nr_worker_threads; i++)
{
int cpu_id = sce_ctx->cpu_affinity_mask[i];
CPU_SET(cpu_id, &sce_ctx->coremask);
}
sce_ctx->ts = timestamp_new(sce_ctx->ts_update_interval_ms);
sce_ctx->metrics = global_metrics_create(profile, sce_ctx->nr_worker_threads);
if (sce_ctx->metrics == NULL)
{
goto error_out;
}
sce_ctx->enforcer = policy_enforcer_create("SCE", profile, sce_ctx->nr_worker_threads);
if (sce_ctx->enforcer == NULL)
{
goto error_out;
}
if (policy_enforcer_register(sce_ctx->enforcer) == -1)
{
goto error_out;
}
sce_ctx->io = packet_io_create(profile, sce_ctx->nr_worker_threads, &sce_ctx->coremask);
if (sce_ctx->io == NULL)
{
goto error_out;
}
return sce_ctx;
error_out:
sce_ctx_destory(sce_ctx);
return NULL;
}
void sce_ctx_destory(struct sce_ctx *sce_ctx)
{
if (sce_ctx)
{
packet_io_destory(sce_ctx->io);
policy_enforcer_destory(sce_ctx->enforcer);
global_metrics_destory(sce_ctx->metrics);
timestamp_free(sce_ctx->ts);
free(sce_ctx);
sce_ctx = NULL;
}
}
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