1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
#include "addr_tuple4.h"
#include "session_table.h"
#include "raw_packet.h"
#include "utils.h"
#include "log.h"
#include "shaper_marsio.h"
#include "shaper_session.h"
#include "shaper_maat.h"
#include "shaper_stat.h"
#include "shaper_global_stat.h"
#include "shaper.h"
#include "mpack.h"
struct shaping_flow* shaper_session_opening(struct shaping_thread_ctx *ctx, struct metadata *meta, struct ctrl_pkt_data *ctrl_data, struct raw_pkt_parser *raw_parser)
{
struct shaping_flow *sf = NULL;
struct session_node *node = NULL;
node = session_table_search_by_id(ctx->session_table, meta->session_id);
if (node) {
sf = (struct shaping_flow *)node->val_data;
char *addr_str = addr_tuple4_to_str(&sf->tuple4);
LOG_ERROR("%s: session id %lu for %s has already exist", LOG_TAG_SHAPING, meta->session_id, addr_str);
if (addr_str) {
free(addr_str);
}
return NULL;
}
sf = shaping_flow_new();
raw_packet_parser_get_most_inner_tuple4(raw_parser, &sf->tuple4);
sf->src_ip_str = addr_src_ip_to_str(&sf->tuple4);
sf->src_ip_str_len = strlen(sf->src_ip_str);
//shaper_rules_update(ctx, sf, ctrl_data->shaping_rule_ids, ctrl_data->shaping_rule_num);
shaper_marsio_metadata_deep_copy(&sf->ctrl_meta, meta);
session_table_insert(ctx->session_table, meta->session_id, &sf->tuple4, sf, NULL);
shaper_global_stat_curr_session_inc(ctx->global_stat);
return sf;
}
void shaper_session_log_prepare(struct shaping_flow *sf, char **mpack_data, size_t *mpack_size)
{
mpack_writer_t writer;
struct shaping_rule_info *rule_info;
mpack_writer_init_growable(&writer, mpack_data, mpack_size);
mpack_build_map(&writer);
//tsync
mpack_write_cstr(&writer, "tsync");
mpack_write_cstr(&writer, "2.0");
//session_id
mpack_write_cstr(&writer, "session_id");
mpack_write_u64(&writer, sf->ctrl_meta.session_id);
//state
mpack_write_cstr(&writer, "state");
mpack_write_cstr(&writer, "active");
//method
mpack_write_cstr(&writer, "method");
mpack_write_cstr(&writer, "log_update");
char *addr_str = addr_tuple4_to_str(&sf->tuple4);
LOG_DEBUG("%s: shaper prepare log to sapp for session %s, id %lu", LOG_TAG_SHAPING, addr_str, sf->ctrl_meta.session_id);
if (addr_str) {
free(addr_str);
}
//params
mpack_write_cstr(&writer, "params");
mpack_build_map(&writer);
mpack_write_cstr(&writer, "shaper");
mpack_build_array(&writer);
for (int i = 0; i < sf->rule_num; i++) {
rule_info = &sf->matched_rule_infos[i];
mpack_build_map(&writer);
mpack_write_cstr(&writer, "rule_id");
mpack_write_i64(&writer, rule_info->id);
LOG_DEBUG("%s: rule id %d", LOG_TAG_SHAPING, rule_info->id);
mpack_write_cstr(&writer, "profile_ids");
mpack_build_array(&writer);
mpack_write_i64(&writer, rule_info->primary.id);
LOG_DEBUG("%s: primary_profile id %d", LOG_TAG_SHAPING, rule_info->primary.id);
for (int j = 0; j < rule_info->borrowing_num; j++) {
mpack_write_i64(&writer, rule_info->borrowing[j].id);
LOG_DEBUG("%s: borrow_profile id %d", LOG_TAG_SHAPING, rule_info->borrowing[j].id);
}
mpack_complete_array(&writer);//end build array for profile_ids
mpack_complete_map(&writer);
}
mpack_complete_array(&writer);//end build array for shaper
mpack_complete_map(&writer);//end build map for params
mpack_complete_map(&writer);//end build map at the beginning
mpack_writer_destroy(&writer);
LOG_DEBUG("%s: log length is %lu", LOG_TAG_SHAPING, *mpack_size);
return;
}
static void shaper_session_log_send(struct shaping_thread_ctx *ctx, struct shaping_flow *sf)
{
char *mpack_data = NULL;
size_t mpack_size = 0;
shaper_session_log_prepare(sf, &mpack_data, &mpack_size);
marsio_buff_t *tx_buff;
char *pkt_header_data = sf->ctrl_meta.raw_data;
int pkt_header_len = sf->ctrl_meta.l7_offset;
struct metadata *ctrl_meta = &sf->ctrl_meta;
struct sids sids;
char *addr_str = addr_tuple4_to_str(&sf->tuple4);
marsio_buff_malloc_global(ctx->marsio_info->instance, &tx_buff, 1, 0, ctx->thread_index);
marsio_buff_set_ctrlbuf(tx_buff);
char *dst = marsio_buff_append(tx_buff, pkt_header_len + mpack_size);
memcpy(dst, pkt_header_data, pkt_header_len);
memcpy(dst + pkt_header_len, mpack_data, mpack_size);
if (marsio_buff_set_metadata(tx_buff, MR_BUFF_SESSION_ID, &ctrl_meta->session_id, sizeof(ctrl_meta->session_id)) != 0) {
LOG_ERROR("%s: marsio_buff_set_metadata MR_BUFF_SESSION_ID failed for session %s", LOG_TAG_SHAPING, addr_str);
goto END;
}
if (marsio_buff_set_metadata(tx_buff, MR_BUFF_PAYLOAD_OFFSET, &pkt_header_len, sizeof(pkt_header_len)) != 0) {
LOG_ERROR("%s: marsio_buff_set_metadata MR_BUFF_PAYLOAD_OFFSET failed for session %s", LOG_TAG_SHAPING, addr_str);
goto END;
}
sids.elems[0] = ctx->firewall_sid;
sids.num = 1;
if (marsio_buff_set_sid_list(tx_buff, sids.elems, sids.num) != 0) {
LOG_ERROR("%s: marsio_buff_set_sid_list failed for session %s", LOG_TAG_SHAPING, addr_str);
goto END;
}
if (marsio_buff_set_metadata(tx_buff, MR_BUFF_ROUTE_CTX, ctrl_meta->route_ctx.data, ctrl_meta->route_ctx.len) != 0) {
LOG_ERROR("%s: marsio_buff_set_metadata MR_BUFF_ROUTE_CTX failed for session %s", LOG_TAG_SHAPING, addr_str);
goto END;
}
marsio_send_burst(ctx->marsio_info->mr_path, ctx->thread_index, &tx_buff, 1);
shaper_global_stat_session_log_send_num_inc(ctx->global_stat);
END:
if (addr_str) {
free(addr_str);
}
if (mpack_data) {
free(mpack_data);
}
return;
}
struct shaping_flow* shaper_session_close(struct shaping_thread_ctx *ctx, struct metadata *meta)
{
struct session_node *session_node = NULL;
struct shaping_flow *sf = NULL;
session_node = session_table_search_by_id(ctx->session_table, meta->session_id);
if (!session_node) {
return NULL;
}
sf = (struct shaping_flow *)session_node->val_data;
sf->flag |= SESSION_CLOSE;
shaper_global_stat_ctrlpkt_active_close_inc(ctx->global_stat);
session_table_delete_by_id(ctx->session_table, meta->session_id);
shaper_global_stat_curr_session_dec(ctx->global_stat);
return sf;
}
struct shaping_flow* shaper_session_active(struct shaping_thread_ctx *ctx, struct metadata *meta, struct ctrl_pkt_data *ctrl_data, struct raw_pkt_parser *raw_parser)
{
struct shaping_flow *sf = NULL;
struct session_node *node = NULL;
node = session_table_search_by_id(ctx->session_table, meta->session_id);
if (!node) {
sf = shaper_session_opening(ctx, meta, ctrl_data, raw_parser);
} else {
sf = (struct shaping_flow *)node->val_data;
}
shaper_rules_update(ctx, sf, ctrl_data->shaping_rule_ids, ctrl_data->shaping_rule_num);
shaper_session_log_send(ctx, sf);//send log of rules and profiles when receive new matched rules
return sf;
}
struct shaping_flow* shaper_session_reset_all(struct shaping_thread_ctx *ctx, struct metadata *meta)
{
struct shaping_ctx *shaping_ctx = ctx->ref_ctx;
LOG_ERROR("%s: session %lu resetall: notification clears all session tables !!!", LOG_TAG_SHAPING, meta->session_id);
for (int i = 0; i < shaping_ctx->thread_num; i++) {
__atomic_add_fetch(&shaping_ctx->thread_ctx[i].session_need_reset, 1, __ATOMIC_SEQ_CST);
}
return NULL;
}
void shaper_session_data_free_cb(void *session_data, void *data)
{
struct shaping_flow *sf = (struct shaping_flow *)session_data;
struct shaping_thread_ctx *ctx = (struct shaping_thread_ctx *)data;
if (sf) {
shaper_queue_clear(sf, ctx);
shaping_flow_free(ctx, sf);
}
shaper_global_stat_curr_session_dec(ctx->global_stat);
return;
}
|
