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1.11 ! deraadt 1: /* $OpenBSD: pf.c,v 1.10 2019/05/09 15:01:09 claudio Exp $ */
1.1 canacar 2: /*
3: * Copyright (c) 2001, 2007 Can Erkin Acar <canacar@openbsd.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17:
18: #include <sys/types.h>
1.10 claudio 19: #include <sys/sysctl.h>
1.1 canacar 20: #include <sys/ioctl.h>
21: #include <sys/socket.h>
1.7 deraadt 22: #include <sys/signal.h>
1.1 canacar 23: #include <net/if.h>
24: #include <netinet/in.h>
25: #include <netinet/ip.h>
26: #include <net/pfvar.h>
27:
28: #include <stdio.h>
29: #include <stdlib.h>
30: #include <string.h>
31: #include <ctype.h>
32: #include <errno.h>
33: #include <err.h>
34: #include <unistd.h>
1.2 mcbride 35: #include <syslog.h>
1.1 canacar 36: #include "pfctl_parser.h"
37: #include "systat.h"
38:
39: void print_pf(void);
40: int read_pf(void);
41: int select_pf(void);
1.3 lum 42: void print_fld_double(field_def *, double);
1.1 canacar 43:
44: const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
45: const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
46: const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
47: const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
48:
49: static struct pf_status status;
50: int num_pf = 0;
51:
52: field_def fields_pf[] = {
53: {"TYPE", 13, 16, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
54: {"NAME", 12, 24, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
55: {"VALUE", 8, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
56: {"RATE", 8, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 60},
57: {"NOTES", 10, 20, 1, FLD_ALIGN_LEFT, -1, 0, 0, 60},
58: };
59:
1.4 jasper 60: #define FLD_PF_TYPE FIELD_ADDR(fields_pf,0)
61: #define FLD_PF_NAME FIELD_ADDR(fields_pf,1)
62: #define FLD_PF_VALUE FIELD_ADDR(fields_pf,2)
63: #define FLD_PF_RATE FIELD_ADDR(fields_pf,3)
64: #define FLD_PF_DESC FIELD_ADDR(fields_pf,4)
1.1 canacar 65:
66: /* Define views */
67: field_def *view_pf_0[] = {
68: FLD_PF_TYPE, FLD_PF_NAME, FLD_PF_VALUE, FLD_PF_RATE, FLD_PF_DESC, NULL
69: };
70:
71:
72: /* Define view managers */
73: struct view_manager pf_mgr = {
74: "PF", select_pf, read_pf, NULL, print_header,
75: print_pf, keyboard_callback, NULL, NULL
76: };
77:
78: field_view views_pf[] = {
79: {view_pf_0, "pf", 'P', &pf_mgr},
80: {NULL, NULL, 0, NULL}
81: };
82:
83:
84:
85: int
86: select_pf(void)
87: {
88: return (0);
89: }
90:
91: int
92: read_pf(void)
93: {
1.10 claudio 94: size_t size = sizeof(status);
95: int mib[3] = { CTL_KERN, KERN_PFSTATUS };
1.1 canacar 96:
1.11 ! deraadt 97: if (sysctl(mib, 2, &status, &size, NULL, 0) == -1) {
1.10 claudio 98: error("sysctl(PFCTL_STATUS): %s", strerror(errno));
1.1 canacar 99: return (-1);
100: }
101:
102: num_disp = 4;
103:
104: if (status.ifname[0] != 0)
105: num_disp += 13;
106:
107: num_disp += FCNT_MAX + 2;
108: num_disp += SCNT_MAX + 2;
109: num_disp += PFRES_MAX + 1;
110: num_disp += LCNT_MAX + 1;
111:
112: return (0);
113: }
114:
115: int
116: initpf(void)
117: {
118: field_view *v;
119:
120: for (v = views_pf; v->name != NULL; v++)
121: add_view(v);
122:
123: return(1);
124: }
125:
126: void
127: print_fld_double(field_def *fld, double val)
128: {
129: int len;
130:
131: if (fld == NULL)
132: return;
133:
134: len = fld->width;
135: if (len < 1)
136: return;
137:
138: tb_start();
139: if (tbprintf("%.2f", val) > len)
140: print_fld_str(fld, "*");
141: else
142: print_fld_tb(fld);
143: tb_end();
144: }
145:
146: #define ADD_LINE_A(t, n, v) \
147: do { \
148: if (cur >= dispstart && cur < end) { \
149: print_fld_str(FLD_PF_TYPE, (t)); \
150: print_fld_str(FLD_PF_NAME, (n)); \
151: print_fld_age(FLD_PF_VALUE, (v)); \
152: end_line(); \
153: } \
154: if (++cur >= end) \
155: return; \
156: } while (0)
157:
158: #define ADD_EMPTY_LINE \
159: do { \
160: if (cur >= dispstart && cur < end) \
161: end_line(); \
162: if (++cur >= end) \
163: return; \
164: } while (0)
165:
166: #define ADD_LINE_S(t, n, v) \
167: do { \
168: if (cur >= dispstart && cur < end) { \
169: print_fld_str(FLD_PF_TYPE, (t)); \
170: print_fld_str(FLD_PF_NAME, (n)); \
171: print_fld_str(FLD_PF_VALUE, (v)); \
172: end_line(); \
173: } \
174: if (++cur >= end) \
175: return; \
176: } while (0)
177:
178: #define ADD_LINE_V(t, n, v) \
179: do { \
180: if (cur >= dispstart && cur < end) { \
181: print_fld_str(FLD_PF_TYPE, (t)); \
182: print_fld_str(FLD_PF_NAME, (n)); \
183: print_fld_size(FLD_PF_VALUE, (v)); \
184: end_line(); \
185: } \
186: if (++cur >= end) \
187: return; \
188: } while (0)
189:
190: #define ADD_LINE_VD(t, n, v, d) \
191: do { \
192: if (cur >= dispstart && cur < end) { \
193: print_fld_str(FLD_PF_TYPE, (t)); \
194: print_fld_str(FLD_PF_NAME, (n)); \
195: print_fld_size(FLD_PF_VALUE, (v)); \
196: print_fld_str(FLD_PF_DESC, (d)); \
197: end_line(); \
198: } \
199: if (++cur >= end) \
200: return; \
201: } while (0)
202:
203: #define ADD_LINE_VR(t, n, v, r) \
204: do { \
205: if (cur >= dispstart && cur < end) { \
206: print_fld_str(FLD_PF_TYPE, (t)); \
207: print_fld_str(FLD_PF_NAME, (n)); \
208: print_fld_size(FLD_PF_VALUE, (v)); \
209: print_fld_double(FLD_PF_RATE, (r)); \
210: end_line(); \
211: } \
212: if (++cur >= end) \
213: return; \
214: } while (0)
215:
216:
217: void
218: print_pf(void)
219: {
220: char *debug;
1.9 patrick 221: time_t tm = 0;
222: struct timespec uptime;
1.1 canacar 223: int i;
224: struct pf_status *s = &status;
225:
226: int cur = 0;
227: int end = dispstart + maxprint;
228: if (end > num_disp)
229: end = num_disp;
230:
1.9 patrick 231: if (!clock_gettime(CLOCK_UPTIME, &uptime))
232: tm = uptime.tv_sec - s->since;
1.1 canacar 233:
234: ADD_LINE_S("pf", "Status", s->running ? "Enabled" : "Disabled");
235: ADD_LINE_A("pf", "Since", tm);
236:
237: switch (s->debug) {
1.2 mcbride 238: case LOG_EMERG:
239: debug = "emerg";
1.1 canacar 240: break;
1.2 mcbride 241: case LOG_ALERT:
242: debug = "alert";
1.1 canacar 243: break;
1.2 mcbride 244: case LOG_CRIT:
245: debug = "crit";
1.1 canacar 246: break;
1.2 mcbride 247: case LOG_ERR:
248: debug = "err";
249: break;
250: case LOG_WARNING:
251: debug = "warning";
252: break;
253: case LOG_NOTICE:
254: debug = "notice";
255: break;
256: case LOG_INFO:
257: debug = "info";
258: break;
259: case LOG_DEBUG:
260: debug = "debug";
1.1 canacar 261: break;
1.8 benno 262: default:
263: debug = "unknown";
264: break;
1.1 canacar 265: }
266: ADD_LINE_S("pf", "Debug", debug);
267:
268: tb_start();
269: tbprintf("0x%08x\n", ntohl(s->hostid));
270: tb_end();
271:
272: ADD_LINE_S("pf", "Hostid", tmp_buf);
273:
274: if (s->ifname[0] != 0) {
275: ADD_EMPTY_LINE;
276: ADD_LINE_VD(s->ifname, "Bytes In", s->bcounters[0][0], "IPv4");
277: ADD_LINE_VD(s->ifname, "Bytes In", s->bcounters[1][0], "IPv6");
278: ADD_LINE_VD(s->ifname, "Bytes Out", s->bcounters[0][1], "IPv4");
279: ADD_LINE_VD(s->ifname, "Bytes Out", s->bcounters[1][1], "IPv6");
280: ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[0][0][PF_PASS], "IPv4, Passed");
281: ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[1][0][PF_PASS], "IPv6, Passed");
282: ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[0][0][PF_DROP], "IPv4, Blocked");
283: ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[1][0][PF_DROP], "IPv6, Blocked");
284: ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[0][1][PF_PASS], "IPv4, Passed");
285: ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[1][1][PF_PASS], "IPv6, Passed");
286: ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[0][1][PF_DROP], "IPv4, Blocked");
287: ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[1][1][PF_DROP], "IPv6, Blocked");
288: }
289:
290:
291: ADD_EMPTY_LINE;
292: ADD_LINE_V("state", "Count", s->states);
293:
294: for (i = 0; i < FCNT_MAX; i++) {
295: if (tm > 0)
296: ADD_LINE_VR("state", pf_fcounters[i], s->fcounters[i],
297: (double)s->fcounters[i] / (double)tm);
298: else
299: ADD_LINE_V("state", pf_fcounters[i], s->fcounters[i]);
300: }
301:
302:
303: ADD_EMPTY_LINE;
304: ADD_LINE_V("src track", "Count", s->src_nodes);
305:
306: for (i = 0; i < SCNT_MAX; i++) {
307: if (tm > 0)
308: ADD_LINE_VR("src track", pf_scounters[i], s->scounters[i],
309: (double)s->scounters[i] / (double)tm);
310: else
311: ADD_LINE_V("src track", pf_scounters[i], s->scounters[i]);
312: }
313:
314: ADD_EMPTY_LINE;
315: for (i = 0; i < PFRES_MAX; i++) {
316: if (tm > 0)
317: ADD_LINE_VR("counter", pf_reasons[i], s->counters[i],
318: (double)s->counters[i] / (double)tm);
319: else
320: ADD_LINE_V("counter", pf_reasons[i], s->counters[i]);
321: }
322:
323: ADD_EMPTY_LINE;
324: for (i = 0; i < LCNT_MAX; i++) {
325: if (tm > 0)
326: ADD_LINE_VR("limit counter", pf_lcounters[i], s->lcounters[i],
327: (double)s->lcounters[i] / (double)tm);
328: else
329: ADD_LINE_V("limit counter", pf_lcounters[i], s->lcounters[i]);
330: }
331: }