blob: 99b9caa4e1ce3c70bca5df6b895d42631699f371 (
plain)
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
|
#ifndef _CONNTRACKD_H_
#define _CONNTRACKD_H_
#include "mcast.h"
#include "local.h"
#include "alarm.h"
#include "filter.h"
#include <stdint.h>
#include <stdio.h>
#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
#include <syslog.h>
/* UNIX facilities */
#define FLUSH_MASTER 0 /* flush kernel conntrack table */
#define RESYNC_MASTER 1 /* resync with kernel conntrack table */
#define DUMP_INTERNAL 16 /* dump internal cache */
#define DUMP_EXTERNAL 17 /* dump external cache */
#define COMMIT 18 /* commit external cache */
#define FLUSH_CACHE 19 /* flush cache */
#define KILL 20 /* kill conntrackd */
#define STATS 21 /* dump statistics */
#define SEND_BULK 22 /* send a bulk */
#define REQUEST_DUMP 23 /* request dump */
#define DUMP_INT_XML 24 /* dump internal cache in XML */
#define DUMP_EXT_XML 25 /* dump external cache in XML */
#define RESET_TIMERS 26 /* reset kernel timers */
#define DEBUG_INFO 27 /* unused */
#define STATS_NETWORK 28 /* extended network stats */
#define STATS_CACHE 29 /* extended cache stats */
#define STATS_RUNTIME 30 /* extended runtime stats */
#define STATS_MULTICAST 31 /* multicast network stats */
#define STATS_QUEUE 32 /* queue stats */
#define DEFAULT_CONFIGFILE "/etc/conntrackd/conntrackd.conf"
#define DEFAULT_LOCKFILE "/var/lock/conntrackd.lock"
#define DEFAULT_LOGFILE "/var/log/conntrackd.log"
#define DEFAULT_STATS_LOGFILE "/var/log/conntrackd-stats.log"
#define DEFAULT_SYSLOG_FACILITY LOG_DAEMON
/* daemon/request modes */
#define NOT_SET 0
#define DAEMON 1
#define REQUEST 2
/* conntrackd modes */
#define CTD_SYNC_MODE (1UL << 0)
#define CTD_STATS_MODE (1UL << 1)
#define CTD_SYNC_FTFW (1UL << 2)
#define CTD_SYNC_ALARM (1UL << 3)
#define CTD_SYNC_NOTRACK (1UL << 4)
#define CTD_POLL (1UL << 5)
/* FILENAME_MAX is 4096 on my system, perhaps too much? */
#ifndef FILENAME_MAXLEN
#define FILENAME_MAXLEN 256
#endif
union inet_address {
uint32_t ipv4;
uint32_t ipv6[4];
uint32_t all[4];
};
#define CONFIG(x) conf.x
struct ct_conf {
char logfile[FILENAME_MAXLEN];
int syslog_facility;
char lockfile[FILENAME_MAXLEN];
int hashsize; /* hashtable size */
int mcast_links;
int mcast_default_link;
struct mcast_conf mcast[MCAST_LINKS_MAX];
struct local_conf local; /* unix socket facilities */
int limit;
int refresh;
int cache_timeout; /* cache entries timeout */
int commit_timeout; /* committed entries timeout */
unsigned int purge_timeout; /* purge kernel entries timeout */
unsigned int netlink_buffer_size;
unsigned int netlink_buffer_size_max_grown;
union inet_address *listen_to;
unsigned int listen_to_len;
unsigned int flags;
int family; /* protocol family */
unsigned int resend_queue_size; /* FTFW protocol */
unsigned int window_size;
int poll_kernel_secs;
int cache_write_through;
int filter_from_kernelspace;
int event_iterations_limit;
struct {
char logfile[FILENAME_MAXLEN];
int syslog_facility;
size_t buffer_size;
} stats;
};
#define STATE(x) st.x
struct ct_general_state {
sigset_t block;
FILE *log;
FILE *stats_log;
struct local_server local;
struct ct_mode *mode;
struct ct_filter *us_filter;
struct nfct_handle *event; /* event handler */
struct nfct_filter *filter; /* event filter */
int event_iterations_limit;
struct nfct_handle *dump; /* dump handler */
struct nfct_handle *request; /* request handler */
struct nfct_handle *resync; /* resync handler */
struct alarm_block resync_alarm;
struct fds *fds;
/* statistics */
struct {
uint64_t bytes[NFCT_DIR_MAX];
uint64_t packets[NFCT_DIR_MAX];
time_t daemon_start_time;
uint64_t nl_events_received;
uint64_t nl_events_filtered;
uint32_t nl_events_unknown_type;
uint32_t nl_catch_event_failed;
uint32_t nl_overrun;
uint32_t nl_dump_unknown_type;
uint32_t nl_kernel_table_flush;
uint32_t nl_kernel_table_resync;
uint32_t child_process_failed;
uint32_t child_process_error_segfault;
uint32_t child_process_error_term;
uint32_t select_failed;
uint32_t wait_failed;
uint32_t local_read_failed;
uint32_t local_unknown_request;
} stats;
};
#define STATE_SYNC(x) state.sync->x
struct ct_sync_state {
struct cache *internal; /* internal events cache (netlink) */
struct cache *external; /* external events cache (mcast) */
struct mcast_sock_multi *mcast_server; /* multicast incoming */
struct mcast_sock_multi *mcast_client; /* multicast outgoing */
struct nlif_handle *mcast_iface;
struct queue *tx_queue;
struct sync_mode *sync; /* sync mode */
/* statistics */
struct {
uint64_t msg_rcv_malformed;
uint32_t msg_rcv_bad_version;
uint32_t msg_rcv_bad_payload;
uint32_t msg_rcv_bad_header;
uint32_t msg_rcv_bad_type;
uint32_t msg_rcv_truncated;
uint32_t msg_rcv_bad_size;
uint32_t msg_snd_malformed;
uint64_t msg_rcv_lost;
uint64_t msg_rcv_before;
} error;
uint32_t last_seq_sent; /* last sequence number sent */
uint32_t last_seq_recv; /* last sequence number recv */
};
#define STATE_STATS(x) state.stats->x
struct ct_stats_state {
struct cache *cache; /* internal events cache (netlink) */
};
union ct_state {
struct ct_sync_state *sync;
struct ct_stats_state *stats;
};
extern struct ct_conf conf;
extern union ct_state state;
extern struct ct_general_state st;
#ifndef IPPROTO_VRRP
#define IPPROTO_VRRP 112
#endif
#define STEPS_PER_SECONDS 5
struct ct_mode {
int (*init)(void);
void (*run)(fd_set *readfds);
int (*local)(int fd, int type, void *data);
void (*kill)(void);
void (*dump)(struct nf_conntrack *ct);
int (*resync)(enum nf_conntrack_msg_type type,
struct nf_conntrack *ct,
void *data);
int (*purge)(void);
void (*event_new)(struct nf_conntrack *ct);
void (*event_upd)(struct nf_conntrack *ct);
int (*event_dst)(struct nf_conntrack *ct);
};
/* conntrackd modes */
extern struct ct_mode sync_mode;
extern struct ct_mode stats_mode;
#define MAX(x, y) x > y ? x : y
/* These live in run.c */
void killer(int foo);
void local_handler(int fd, void *data);
int init(void);
void run(void);
/* from read_config_yy.c */
int
init_config(char *filename);
#endif
|
