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/* $OpenBSD: pf.c,v 1.8 2016/01/02 20:03:28 benno Exp $ */ |
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/* |
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* Copyright (c) 2001, 2007 Can Erkin Acar <canacar@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/ioctl.h> |
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#include <sys/socket.h> |
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#include <sys/signal.h> |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <netinet/ip.h> |
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#include <net/pfvar.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <errno.h> |
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#include <err.h> |
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#include <unistd.h> |
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#include <syslog.h> |
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#include "pfctl_parser.h" |
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#include "systat.h" |
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void print_pf(void); |
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int read_pf(void); |
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int select_pf(void); |
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void print_fld_double(field_def *, double); |
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const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; |
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const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; |
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const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; |
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const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; |
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static struct pf_status status; |
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extern int pf_dev; |
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int num_pf = 0; |
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field_def fields_pf[] = { |
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{"TYPE", 13, 16, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"NAME", 12, 24, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
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{"VALUE", 8, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"RATE", 8, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 60}, |
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{"NOTES", 10, 20, 1, FLD_ALIGN_LEFT, -1, 0, 0, 60}, |
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}; |
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#define FLD_PF_TYPE FIELD_ADDR(fields_pf,0) |
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#define FLD_PF_NAME FIELD_ADDR(fields_pf,1) |
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#define FLD_PF_VALUE FIELD_ADDR(fields_pf,2) |
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#define FLD_PF_RATE FIELD_ADDR(fields_pf,3) |
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#define FLD_PF_DESC FIELD_ADDR(fields_pf,4) |
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/* Define views */ |
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field_def *view_pf_0[] = { |
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FLD_PF_TYPE, FLD_PF_NAME, FLD_PF_VALUE, FLD_PF_RATE, FLD_PF_DESC, NULL |
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}; |
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/* Define view managers */ |
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struct view_manager pf_mgr = { |
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"PF", select_pf, read_pf, NULL, print_header, |
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print_pf, keyboard_callback, NULL, NULL |
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}; |
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field_view views_pf[] = { |
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{view_pf_0, "pf", 'P', &pf_mgr}, |
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{NULL, NULL, 0, NULL} |
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}; |
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int |
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select_pf(void) |
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{ |
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return (0); |
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} |
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int |
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read_pf(void) |
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{ |
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if (pf_dev < 0) { |
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num_disp = 0; |
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return 0; |
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} |
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if (ioctl(pf_dev, DIOCGETSTATUS, &status)) { |
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error("DIOCGETSTATUS: %s", strerror(errno)); |
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return (-1); |
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} |
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num_disp = 4; |
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if (status.ifname[0] != 0) |
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num_disp += 13; |
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num_disp += FCNT_MAX + 2; |
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num_disp += SCNT_MAX + 2; |
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num_disp += PFRES_MAX + 1; |
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num_disp += LCNT_MAX + 1; |
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return (0); |
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} |
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int |
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initpf(void) |
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{ |
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field_view *v; |
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for (v = views_pf; v->name != NULL; v++) |
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add_view(v); |
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return(1); |
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} |
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void |
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print_fld_double(field_def *fld, double val) |
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{ |
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int len; |
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if (fld == NULL) |
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return; |
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len = fld->width; |
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if (len < 1) |
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return; |
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tb_start(); |
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if (tbprintf("%.2f", val) > len) |
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print_fld_str(fld, "*"); |
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else |
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print_fld_tb(fld); |
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tb_end(); |
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} |
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#define ADD_LINE_A(t, n, v) \ |
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do { \ |
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if (cur >= dispstart && cur < end) { \ |
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print_fld_str(FLD_PF_TYPE, (t)); \ |
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print_fld_str(FLD_PF_NAME, (n)); \ |
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print_fld_age(FLD_PF_VALUE, (v)); \ |
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end_line(); \ |
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} \ |
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if (++cur >= end) \ |
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return; \ |
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} while (0) |
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#define ADD_EMPTY_LINE \ |
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do { \ |
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if (cur >= dispstart && cur < end) \ |
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end_line(); \ |
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if (++cur >= end) \ |
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return; \ |
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} while (0) |
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#define ADD_LINE_S(t, n, v) \ |
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do { \ |
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if (cur >= dispstart && cur < end) { \ |
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print_fld_str(FLD_PF_TYPE, (t)); \ |
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print_fld_str(FLD_PF_NAME, (n)); \ |
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print_fld_str(FLD_PF_VALUE, (v)); \ |
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end_line(); \ |
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} \ |
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if (++cur >= end) \ |
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return; \ |
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} while (0) |
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#define ADD_LINE_V(t, n, v) \ |
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do { \ |
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if (cur >= dispstart && cur < end) { \ |
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print_fld_str(FLD_PF_TYPE, (t)); \ |
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print_fld_str(FLD_PF_NAME, (n)); \ |
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print_fld_size(FLD_PF_VALUE, (v)); \ |
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end_line(); \ |
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} \ |
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if (++cur >= end) \ |
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return; \ |
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} while (0) |
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#define ADD_LINE_VD(t, n, v, d) \ |
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do { \ |
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if (cur >= dispstart && cur < end) { \ |
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print_fld_str(FLD_PF_TYPE, (t)); \ |
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print_fld_str(FLD_PF_NAME, (n)); \ |
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print_fld_size(FLD_PF_VALUE, (v)); \ |
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print_fld_str(FLD_PF_DESC, (d)); \ |
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end_line(); \ |
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} \ |
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if (++cur >= end) \ |
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return; \ |
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} while (0) |
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#define ADD_LINE_VR(t, n, v, r) \ |
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do { \ |
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if (cur >= dispstart && cur < end) { \ |
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print_fld_str(FLD_PF_TYPE, (t)); \ |
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print_fld_str(FLD_PF_NAME, (n)); \ |
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print_fld_size(FLD_PF_VALUE, (v)); \ |
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print_fld_double(FLD_PF_RATE, (r)); \ |
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end_line(); \ |
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} \ |
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if (++cur >= end) \ |
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return; \ |
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} while (0) |
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void |
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print_pf(void) |
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{ |
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char *debug; |
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time_t tm; |
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int i; |
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struct pf_status *s = &status; |
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int cur = 0; |
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int end = dispstart + maxprint; |
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if (end > num_disp) |
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end = num_disp; |
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tm = time(NULL) - s->since; |
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ADD_LINE_S("pf", "Status", s->running ? "Enabled" : "Disabled"); |
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ADD_LINE_A("pf", "Since", tm); |
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switch (s->debug) { |
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case LOG_EMERG: |
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debug = "emerg"; |
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break; |
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case LOG_ALERT: |
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debug = "alert"; |
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break; |
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case LOG_CRIT: |
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debug = "crit"; |
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break; |
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case LOG_ERR: |
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debug = "err"; |
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break; |
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case LOG_WARNING: |
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debug = "warning"; |
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break; |
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case LOG_NOTICE: |
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debug = "notice"; |
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break; |
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case LOG_INFO: |
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debug = "info"; |
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break; |
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case LOG_DEBUG: |
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debug = "debug"; |
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break; |
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default: |
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debug = "unknown"; |
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break; |
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} |
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ADD_LINE_S("pf", "Debug", debug); |
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tb_start(); |
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tbprintf("0x%08x\n", ntohl(s->hostid)); |
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tb_end(); |
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ADD_LINE_S("pf", "Hostid", tmp_buf); |
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if (s->ifname[0] != 0) { |
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ADD_EMPTY_LINE; |
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ADD_LINE_VD(s->ifname, "Bytes In", s->bcounters[0][0], "IPv4"); |
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ADD_LINE_VD(s->ifname, "Bytes In", s->bcounters[1][0], "IPv6"); |
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ADD_LINE_VD(s->ifname, "Bytes Out", s->bcounters[0][1], "IPv4"); |
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ADD_LINE_VD(s->ifname, "Bytes Out", s->bcounters[1][1], "IPv6"); |
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ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[0][0][PF_PASS], "IPv4, Passed"); |
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ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[1][0][PF_PASS], "IPv6, Passed"); |
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ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[0][0][PF_DROP], "IPv4, Blocked"); |
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ADD_LINE_VD(s->ifname, "Packets In", s->pcounters[1][0][PF_DROP], "IPv6, Blocked"); |
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ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[0][1][PF_PASS], "IPv4, Passed"); |
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ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[1][1][PF_PASS], "IPv6, Passed"); |
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ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[0][1][PF_DROP], "IPv4, Blocked"); |
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ADD_LINE_VD(s->ifname, "Packets Out", s->pcounters[1][1][PF_DROP], "IPv6, Blocked"); |
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} |
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ADD_EMPTY_LINE; |
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ADD_LINE_V("state", "Count", s->states); |
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for (i = 0; i < FCNT_MAX; i++) { |
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if (tm > 0) |
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ADD_LINE_VR("state", pf_fcounters[i], s->fcounters[i], |
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(double)s->fcounters[i] / (double)tm); |
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else |
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ADD_LINE_V("state", pf_fcounters[i], s->fcounters[i]); |
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} |
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ADD_EMPTY_LINE; |
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ADD_LINE_V("src track", "Count", s->src_nodes); |
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for (i = 0; i < SCNT_MAX; i++) { |
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if (tm > 0) |
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ADD_LINE_VR("src track", pf_scounters[i], s->scounters[i], |
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(double)s->scounters[i] / (double)tm); |
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else |
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ADD_LINE_V("src track", pf_scounters[i], s->scounters[i]); |
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} |
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ADD_EMPTY_LINE; |
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for (i = 0; i < PFRES_MAX; i++) { |
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if (tm > 0) |
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ADD_LINE_VR("counter", pf_reasons[i], s->counters[i], |
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(double)s->counters[i] / (double)tm); |
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else |
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ADD_LINE_V("counter", pf_reasons[i], s->counters[i]); |
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} |
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ADD_EMPTY_LINE; |
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for (i = 0; i < LCNT_MAX; i++) { |
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if (tm > 0) |
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ADD_LINE_VR("limit counter", pf_lcounters[i], s->lcounters[i], |
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(double)s->lcounters[i] / (double)tm); |
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else |
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ADD_LINE_V("limit counter", pf_lcounters[i], s->lcounters[i]); |
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} |
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} |