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Feature default policy action switch

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This commit is contained in:
刘学利
2021-03-15 01:15:23 +00:00
parent 23ef49d19c
commit 5a367ff64c
5 changed files with 188 additions and 89 deletions
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139
src/tsg_entry.cpp
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@@ -155,7 +155,7 @@ static int get_device_id(char *command, int entrance_id)
return (entrance_id<<7)+(atoi(buffer)%128);
}
static int is_repetitive_app_id(unsigned short proto_id)
static int is_repetitive_protocol_id(unsigned short proto_id)
{
switch(proto_id)
{
@@ -175,6 +175,31 @@ static int is_repetitive_app_id(unsigned short proto_id)
return 0;
}
static int get_default_policy(int compile_id, struct Maat_rule_t *result)
{
struct Maat_rule_t p_result={0};
struct compile_user_region *user_region=NULL;
p_result.config_id=compile_id;
user_region=(struct compile_user_region *)Maat_rule_get_ex_data(g_tsg_maat_feather, &p_result, g_tsg_para.table_id[TABLE_SECURITY_COMPILE]);
if(user_region!=NULL)
{
if(user_region->result!=NULL)
{
memcpy(result, user_region->result, sizeof(struct Maat_rule_t));
if(result->action==TSG_ACTION_BYPASS)
{
result->action=TSG_ACTION_NONE;
}
}
security_compile_free(g_tsg_para.table_id[TABLE_SECURITY_COMPILE], &p_result, NULL, (MAAT_RULE_EX_DATA *)&user_region, 0, NULL);
return 1;
}
return 0;
}
static struct app_id_label *get_app_id_label(struct streaminfo *a_stream, struct master_context *context, int thread_seq)
{
struct app_id_label *app_id_label=NULL;
@@ -192,8 +217,7 @@ static struct app_id_label *get_app_id_label(struct streaminfo *a_stream, struct
MESA_handle_runtime_log(g_tsg_para.logger,
RLOG_LV_DEBUG,
"READ_APP_ID_FLAG",
"Get %s app id label, app_id: %d addr: %s",
context->uuid_str,
"Get app id label, app_id: %d addr: %s",
app_id_label->app_id,
printaddr(&a_stream->addr, thread_seq)
);
@@ -214,33 +238,14 @@ static int get_basic_proto_id(struct streaminfo *a_stream, struct master_context
if(context->continue_scan_proto_id==APP_SCAN_FLAG_CONTINUE && g_tsg_para.l7_proto_project_id>=0)
{
proto_label=(struct basic_proto_label *)project_req_get_struct(a_stream, g_tsg_para.l7_proto_project_id);
if(proto_label!=NULL && proto_label->proto_id!=context->basic_proto_id)
if(proto_label!=NULL)
{
if(proto_label->continue_scan_flag==APP_SCAN_FLAG_STOP)
{
context->continue_scan_proto_id=APP_SCAN_FLAG_STOP;
}
if(is_repetitive_app_id(proto_label->proto_id))
{
context->continue_scan_proto_id=APP_SCAN_FLAG_STOP;
switch(proto_label->proto_id)
{
case SIP_PROTO_ID:
context->proto=PROTO_SIP;
break;
case RTP_PROTO_ID:
context->proto=PROTO_RTP;
break;
default:
break;
}
}
else
{
context->basic_proto_id=proto_label->proto_id;
return context->basic_proto_id;
}
return proto_label->proto_id;
}
}
@@ -595,7 +600,15 @@ void close_stream_free_context(struct streaminfo *a_stream, struct master_contex
if(context->hit_cnt>0 && context->result!=NULL)
{
memset(&identify_info, 0, sizeof(identify_info));
identify_info.proto=context->proto;
if(context->proto==PROTO_UNKONWN || context->proto>PROTO_APP)
{
identify_info.proto=PROTO_APP;
}
else
{
identify_info.proto=context->proto;
}
if(context->domain_len>0)
{
memcpy(identify_info.domain, context->domain, context->domain_len);
@@ -1034,7 +1047,7 @@ extern "C" char TSG_MASTER_TCP_ENTRY(struct streaminfo *a_tcp, void **pme, int t
int opt_value=0;
int proto_id=0;
char *l7_protocol=NULL;
int ret=0,hit_num=0;
int ret=0,hit_num=0;
int state=APP_STATE_GIVEME;
Maat_rule_t *p_result=NULL;
struct identify_info identify_info;
@@ -1077,17 +1090,20 @@ extern "C" char TSG_MASTER_TCP_ENTRY(struct streaminfo *a_tcp, void **pme, int t
hit_num+=ret;
FS_operate(g_tsg_para.fs2_handle, g_tsg_para.fs2_field_id[TSG_FS2_HIT_ADDR], 0, FS_OP_ADD, 1);
}
context->proto=identify_info.proto;
context->continue_scan_proto_id=APP_SCAN_FLAG_STOP;
break;
default:
break;
}
if(context->proto==PROTO_UNKONWN || context->proto>PROTO_APP) /* support block/alert(deny), Do action in fw_http_plug */
if(context->proto==PROTO_UNKONWN || context->proto>PROTO_APP || context->continue_scan_proto_id==APP_SCAN_FLAG_CONTINUE) /* support block/alert(deny), Do action in fw_http_plug */
{
proto_id=get_basic_proto_id(a_tcp, context, thread_seq);
if(proto_id>0)
if(proto_id>0 && proto_id!=context->basic_proto_id)
{
context->proto=PROTO_APP;
context->basic_proto_id=proto_id;
l7_protocol=tsg_l7_protocol_id2name(g_tsg_log_instance, proto_id);
if(l7_protocol==NULL && proto_id==g_tsg_para.mail_proto_id)
{
@@ -1100,23 +1116,29 @@ extern "C" char TSG_MASTER_TCP_ENTRY(struct streaminfo *a_tcp, void **pme, int t
hit_num+=scan_application_id_and_properties(a_tcp, context, result+hit_num, MAX_RESULT_NUM-hit_num, &context->mid, thread_seq);
p_result=tsg_policy_decision_criteria(a_tcp, result, hit_num, &identify_info, thread_seq);
if(g_tsg_para.default_compile_switch==1 && p_result==NULL)
{
if(get_default_policy(g_tsg_para.default_compile_id, &result[0]))
{
p_result=&result[0];
context->is_default_policy=1;
}
}
if(p_result!=NULL)
{
switch((unsigned char)p_result->action)
{
case TSG_ACTION_DENY:
if((context->result!=NULL && context->result[0].action==TSG_ACTION_BYPASS) || (is_repetitive_app_id(context->proto)))
if((context->result!=NULL && context->result[0].action==TSG_ACTION_BYPASS) || ((is_repetitive_protocol_id(context->proto)) && context->is_default_policy==0))
{
break;
}
context->proto=PROTO_APP;
user_region=(struct compile_user_region *)Maat_rule_get_ex_data(g_tsg_maat_feather, p_result, g_tsg_para.table_id[TABLE_SECURITY_COMPILE]);
if(user_region!=NULL)
{
atomic_dec(&user_region->ref_cnt);
method_type=tsg_get_method_id(user_region->method);
switch(method_type)
{
case TSG_METHOD_TYPE_DROP:
@@ -1148,6 +1170,8 @@ extern "C" char TSG_MASTER_TCP_ENTRY(struct streaminfo *a_tcp, void **pme, int t
default:
break;
}
security_compile_free(g_tsg_para.table_id[TABLE_SECURITY_COMPILE], p_result, NULL, (MAAT_RULE_EX_DATA *)&user_region, 0, NULL);
}
copy_deny_result(a_tcp, context, p_result, thread_seq);
break;
@@ -1223,39 +1247,70 @@ extern "C" char TSG_MASTER_UDP_ENTRY(struct streaminfo *a_udp, void **pme, int t
hit_num+=ret;
FS_operate(g_tsg_para.fs2_handle, g_tsg_para.fs2_field_id[TSG_FS2_HIT_ADDR], 0, FS_OP_ADD, 1);
}
context->proto=identify_info.proto;
context->continue_scan_proto_id=APP_SCAN_FLAG_STOP;
break;
default:
break;
}
if(context->proto==PROTO_UNKONWN || context->proto>PROTO_APP)
if(context->proto==PROTO_UNKONWN || context->proto>PROTO_APP || context->continue_scan_proto_id==APP_SCAN_FLAG_CONTINUE)
{
proto_id=get_basic_proto_id(a_udp, context, thread_seq);
if(proto_id>0)
if(proto_id>0 && context->basic_proto_id!=proto_id)
{
hit_num+=tsg_scan_app_id_policy(g_tsg_maat_feather, a_udp, result, MAX_RESULT_NUM-hit_num, &context->mid, l7_protocol, proto_id, thread_seq);
if(is_repetitive_protocol_id(proto_id))
{
context->continue_scan_proto_id=APP_SCAN_FLAG_STOP;
switch(proto_id)
{
case SIP_PROTO_ID:
context->proto=PROTO_SIP;
set_session_attribute_label(a_udp, TSG_ATTRIBUTE_TYPE_PROTOCOL, (void *)&(context->proto), thread_seq);
break;
case RTP_PROTO_ID:
context->proto=PROTO_RTP;
set_session_attribute_label(a_udp, TSG_ATTRIBUTE_TYPE_PROTOCOL, (void *)&(context->proto), thread_seq);
break;
default:
break;
}
}
else
{
context->proto=PROTO_APP;
context->basic_proto_id=proto_id;
hit_num+=tsg_scan_app_id_policy(g_tsg_maat_feather, a_udp, result, MAX_RESULT_NUM-hit_num, &context->mid, l7_protocol, proto_id, thread_seq);
}
}
}
hit_num+=scan_application_id_and_properties(a_udp, context, result+hit_num, MAX_RESULT_NUM-hit_num, &context->mid, thread_seq);
p_result=tsg_policy_decision_criteria(a_udp, result, hit_num, &identify_info, thread_seq);
if(g_tsg_para.default_compile_switch==1 && p_result==NULL)
{
if(get_default_policy(g_tsg_para.default_compile_id, &result[0]))
{
p_result=&result[0];
context->is_default_policy=1;
}
}
if(p_result!=NULL)
{
switch((unsigned char)p_result->action)
{
case TSG_ACTION_DENY:
if((context->result!=NULL && context->result[0].action==TSG_ACTION_BYPASS) || (is_repetitive_app_id(context->proto)))
if((context->result!=NULL && context->result[0].action==TSG_ACTION_BYPASS) || ((is_repetitive_protocol_id(context->proto)) && context->is_default_policy==0))
{
break;
}
context->proto=PROTO_APP;
user_region=(struct compile_user_region *)Maat_rule_get_ex_data(g_tsg_maat_feather, p_result, g_tsg_para.table_id[TABLE_SECURITY_COMPILE]);
if(user_region!=NULL)
{
atomic_dec(&user_region->ref_cnt);
method_type=tsg_get_method_id(user_region->method);
switch(method_type)
{
case TSG_METHOD_TYPE_DROP:
@@ -1267,6 +1322,8 @@ extern "C" char TSG_MASTER_UDP_ENTRY(struct streaminfo *a_udp, void **pme, int t
default:
break;
}
security_compile_free(g_tsg_para.table_id[TABLE_SECURITY_COMPILE], p_result, NULL, (MAAT_RULE_EX_DATA *)&user_region, 0, NULL);
}
copy_deny_result(a_udp, context, p_result, thread_seq);
break;
@@ -1319,7 +1376,11 @@ extern "C" int TSG_MASTER_INIT()
printf("MESA_create_runtime_log_handle failed ...\n");
return -1;
}
MESA_load_profile_int_def(tsg_conffile, "SYSTEM","DEFAULT_POLICY_ID", &g_tsg_para.default_compile_id, 0);
MESA_load_profile_int_def(tsg_conffile, "SYSTEM","DEFAULT_POLICY_SWITCH", &g_tsg_para.default_compile_switch, 0);
MESA_load_profile_string_def(tsg_conffile, "SYSTEM", "IDENTIFY_PROTO_NAME", identify_proto_name, sizeof(identify_proto_name), "HTTP;SSL;DNS;FTP;BGP;SIP;MAIL;STREAMING_MEDIA;QUIC;");
tsg_proto_name2flag(identify_proto_name, &g_tsg_para.proto_flag);