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/* $OpenBSD: if.c,v 1.23 2015/01/16 00:03:37 deraadt Exp $ */ |
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/* |
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* Copyright (c) 2004 Markus Friedl <markus@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/param.h> /* roundup */ |
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#include <sys/signal.h> |
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#include <sys/socket.h> |
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#include <sys/sysctl.h> |
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#include <net/if.h> |
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#include <net/if_dl.h> |
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#include <net/route.h> |
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#include <sys/sockio.h> |
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#include <sys/ioctl.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "systat.h" |
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static enum state { BOOT, TIME, RUN } state = TIME; |
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struct ifstat { |
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char ifs_name[IFNAMSIZ]; /* interface name */ |
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char ifs_description[IFDESCRSIZE]; |
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struct ifcount ifs_cur; |
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struct ifcount ifs_old; |
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struct ifcount ifs_now; |
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char ifs_flag; |
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} *ifstats; |
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static int nifs = 0; |
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static int num_ifs = 0; |
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static int show_bits = 0; |
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void print_if(void); |
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int read_if(void); |
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int select_if(void); |
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int if_keyboard_callback(int); |
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void fetchifstat(void); |
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static void showifstat(struct ifstat *); |
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static void showtotal(void); |
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static void rt_getaddrinfo(struct sockaddr *, int, struct sockaddr **); |
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/* Define fields */ |
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field_def fields_if[] = { |
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{"IFACE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
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{"STATE", 4, 6, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
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{"IPKTS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"IBYTES", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"IERRS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"OPKTS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"OBYTES", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"OERRS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"COLLS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
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{"DESC", 14, 64, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
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}; |
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#define FLD_IF_IFACE FIELD_ADDR(fields_if,0) |
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#define FLD_IF_STATE FIELD_ADDR(fields_if,1) |
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#define FLD_IF_IPKTS FIELD_ADDR(fields_if,2) |
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#define FLD_IF_IBYTES FIELD_ADDR(fields_if,3) |
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#define FLD_IF_IERRS FIELD_ADDR(fields_if,4) |
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#define FLD_IF_OPKTS FIELD_ADDR(fields_if,5) |
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#define FLD_IF_OBYTES FIELD_ADDR(fields_if,6) |
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#define FLD_IF_OERRS FIELD_ADDR(fields_if,7) |
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#define FLD_IF_COLLS FIELD_ADDR(fields_if,8) |
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#define FLD_IF_DESC FIELD_ADDR(fields_if,9) |
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/* Define views */ |
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field_def *view_if_0[] = { |
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FLD_IF_IFACE, FLD_IF_STATE, FLD_IF_DESC, FLD_IF_IPKTS, |
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FLD_IF_IBYTES, FLD_IF_IERRS, FLD_IF_OPKTS, FLD_IF_OBYTES, |
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FLD_IF_OERRS, FLD_IF_COLLS, NULL |
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}; |
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/* Define view managers */ |
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struct view_manager ifstat_mgr = { |
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"Ifstat", select_if, read_if, NULL, print_header, |
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print_if, if_keyboard_callback, NULL, NULL |
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}; |
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field_view views_if[] = { |
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{view_if_0, "ifstat", '1', &ifstat_mgr}, |
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{NULL, NULL, 0, NULL} |
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}; |
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int |
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initifstat(void) |
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{ |
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field_view *v; |
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read_if(); |
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for (v = views_if; 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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#define UPDATE(x, y) do { \ |
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ifs->ifs_now.x = ifm.y; \ |
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ifs->ifs_cur.x = ifs->ifs_now.x - ifs->ifs_old.x; \ |
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if (state == TIME) {\ |
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ifs->ifs_old.x = ifs->ifs_now.x; \ |
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ifs->ifs_cur.x /= naptime; \ |
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} \ |
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sum.x += ifs->ifs_cur.x; \ |
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} while(0) |
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void |
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rt_getaddrinfo(struct sockaddr *sa, int addrs, struct sockaddr **info) |
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{ |
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int i; |
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for (i = 0; i < RTAX_MAX; i++) { |
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if (addrs & (1 << i)) { |
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info[i] = sa; |
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sa = (struct sockaddr *) ((char *)(sa) + |
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roundup(sa->sa_len, sizeof(long))); |
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} else |
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info[i] = NULL; |
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} |
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} |
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int |
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select_if(void) |
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{ |
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num_disp = num_ifs + 1; |
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return (0); |
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} |
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int |
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read_if(void) |
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{ |
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fetchifstat(); |
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num_disp = num_ifs + 1; |
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return 0; |
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} |
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void |
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print_if(void) |
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{ |
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int n, i, count = 0; |
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for (n = 0, i = 0; n < nifs; n++) { |
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if (ifstats[n].ifs_name[0] == '\0') |
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continue; |
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if (i++ < dispstart) |
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continue; |
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if (i == num_disp) |
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break; |
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showifstat(ifstats + n); |
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if (maxprint > 0 && ++count >= maxprint) |
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return; |
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} |
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showtotal(); |
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} |
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void |
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fetchifstat(void) |
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{ |
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struct ifstat *newstats, *ifs; |
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struct if_msghdr ifm; |
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struct sockaddr *info[RTAX_MAX]; |
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struct sockaddr_dl *sdl; |
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char *buf, *next, *lim; |
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int mib[6], i; |
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size_t need; |
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mib[0] = CTL_NET; |
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mib[1] = PF_ROUTE; |
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mib[2] = 0; |
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mib[3] = 0; |
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mib[4] = NET_RT_IFLIST; |
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mib[5] = 0; |
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if (sysctl(mib, 6, NULL, &need, NULL, 0) == -1) |
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return; |
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if ((buf = malloc(need)) == NULL) |
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return; |
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if (sysctl(mib, 6, buf, &need, NULL, 0) == -1) { |
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free(buf); |
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return; |
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} |
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bzero(&sum, sizeof(sum)); |
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num_ifs = 0; |
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lim = buf + need; |
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for (next = buf; next < lim; next += ifm.ifm_msglen) { |
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bcopy(next, &ifm, sizeof ifm); |
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if (ifm.ifm_version != RTM_VERSION || |
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ifm.ifm_type != RTM_IFINFO || |
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!(ifm.ifm_addrs & RTA_IFP)) |
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continue; |
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if (ifm.ifm_index >= nifs) { |
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if ((newstats = reallocarray(ifstats, ifm.ifm_index + 4, |
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sizeof(struct ifstat))) == NULL) |
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continue; |
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ifstats = newstats; |
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for (; nifs < ifm.ifm_index + 4; nifs++) |
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bzero(&ifstats[nifs], sizeof(*ifstats)); |
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} |
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ifs = &ifstats[ifm.ifm_index]; |
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if (ifs->ifs_name[0] == '\0') { |
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bzero(&info, sizeof(info)); |
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rt_getaddrinfo( |
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(struct sockaddr *)((struct if_msghdr *)next + 1), |
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ifm.ifm_addrs, info); |
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sdl = (struct sockaddr_dl *)info[RTAX_IFP]; |
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if (sdl && sdl->sdl_family == AF_LINK && |
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sdl->sdl_nlen > 0) { |
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struct ifreq ifrdesc; |
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char ifdescr[IFDESCRSIZE]; |
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int s; |
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bcopy(sdl->sdl_data, ifs->ifs_name, |
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sdl->sdl_nlen); |
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ifs->ifs_name[sdl->sdl_nlen] = '\0'; |
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/* Get the interface description */ |
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memset(&ifrdesc, 0, sizeof(ifrdesc)); |
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strlcpy(ifrdesc.ifr_name, ifs->ifs_name, |
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sizeof(ifrdesc.ifr_name)); |
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ifrdesc.ifr_data = (caddr_t)&ifdescr; |
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s = socket(AF_INET, SOCK_DGRAM, 0); |
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if (s != -1) { |
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if (ioctl(s, SIOCGIFDESCR, &ifrdesc) == 0) |
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strlcpy(ifs->ifs_description, |
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ifrdesc.ifr_data, |
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sizeof(ifs->ifs_description)); |
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close(s); |
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} |
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} |
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if (ifs->ifs_name[0] == '\0') |
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continue; |
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} |
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num_ifs++; |
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UPDATE(ifc_ip, ifm_data.ifi_ipackets); |
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UPDATE(ifc_ib, ifm_data.ifi_ibytes); |
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UPDATE(ifc_ie, ifm_data.ifi_ierrors); |
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UPDATE(ifc_op, ifm_data.ifi_opackets); |
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UPDATE(ifc_ob, ifm_data.ifi_obytes); |
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UPDATE(ifc_oe, ifm_data.ifi_oerrors); |
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UPDATE(ifc_co, ifm_data.ifi_collisions); |
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ifs->ifs_cur.ifc_flags = ifm.ifm_flags; |
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ifs->ifs_cur.ifc_state = ifm.ifm_data.ifi_link_state; |
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ifs->ifs_flag++; |
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} |
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276 |
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/* remove unreferenced interfaces */ |
277 |
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for (i = 0; i < nifs; i++) { |
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ifs = &ifstats[i]; |
279 |
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if (ifs->ifs_flag) |
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ifs->ifs_flag = 0; |
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else |
282 |
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ifs->ifs_name[0] = '\0'; |
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} |
284 |
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285 |
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free(buf); |
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} |
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288 |
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static void |
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showifstat(struct ifstat *ifs) |
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{ |
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int conv = show_bits ? 8 : 1; |
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int div = show_bits ? 1000 : 1024; |
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295 |
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print_fld_str(FLD_IF_IFACE, ifs->ifs_name); |
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297 |
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tb_start(); |
298 |
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tbprintf("%s", ifs->ifs_cur.ifc_flags & IFF_UP ? |
299 |
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"up" : "dn"); |
300 |
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301 |
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switch (ifs->ifs_cur.ifc_state) { |
302 |
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case LINK_STATE_UP: |
303 |
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case LINK_STATE_HALF_DUPLEX: |
304 |
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case LINK_STATE_FULL_DUPLEX: |
305 |
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tbprintf(":U"); |
306 |
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break; |
307 |
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case LINK_STATE_DOWN: |
308 |
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tbprintf (":D"); |
309 |
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break; |
310 |
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} |
311 |
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312 |
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print_fld_tb(FLD_IF_STATE); |
313 |
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314 |
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print_fld_str(FLD_IF_DESC, ifs->ifs_description); |
315 |
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316 |
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print_fld_sdiv(FLD_IF_IBYTES, ifs->ifs_cur.ifc_ib * conv, div); |
317 |
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print_fld_size(FLD_IF_IPKTS, ifs->ifs_cur.ifc_ip); |
318 |
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print_fld_size(FLD_IF_IERRS, ifs->ifs_cur.ifc_ie); |
319 |
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320 |
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print_fld_sdiv(FLD_IF_OBYTES, ifs->ifs_cur.ifc_ob * conv, div); |
321 |
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print_fld_size(FLD_IF_OPKTS, ifs->ifs_cur.ifc_op); |
322 |
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print_fld_size(FLD_IF_OERRS, ifs->ifs_cur.ifc_oe); |
323 |
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324 |
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print_fld_size(FLD_IF_COLLS, ifs->ifs_cur.ifc_co); |
325 |
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326 |
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end_line(); |
327 |
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} |
328 |
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329 |
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static void |
330 |
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showtotal(void) |
331 |
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{ |
332 |
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int conv = show_bits ? 8 : 1; |
333 |
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int div = show_bits ? 1000 : 1024; |
334 |
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335 |
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print_fld_str(FLD_IF_IFACE, "Totals"); |
336 |
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337 |
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print_fld_sdiv(FLD_IF_IBYTES, sum.ifc_ib * conv, div); |
338 |
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print_fld_size(FLD_IF_IPKTS, sum.ifc_ip); |
339 |
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print_fld_size(FLD_IF_IERRS, sum.ifc_ie); |
340 |
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341 |
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print_fld_sdiv(FLD_IF_OBYTES, sum.ifc_ob * conv, div); |
342 |
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print_fld_size(FLD_IF_OPKTS, sum.ifc_op); |
343 |
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print_fld_size(FLD_IF_OERRS, sum.ifc_oe); |
344 |
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345 |
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print_fld_size(FLD_IF_COLLS, sum.ifc_co); |
346 |
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347 |
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end_line(); |
348 |
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349 |
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} |
350 |
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351 |
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int |
352 |
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if_keyboard_callback(int ch) |
353 |
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{ |
354 |
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struct ifstat *ifs; |
355 |
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356 |
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switch (ch) { |
357 |
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case 'r': |
358 |
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for (ifs = ifstats; ifs < ifstats + nifs; ifs++) |
359 |
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ifs->ifs_old = ifs->ifs_now; |
360 |
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state = RUN; |
361 |
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gotsig_alarm = 1; |
362 |
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363 |
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break; |
364 |
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case 'b': |
365 |
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state = BOOT; |
366 |
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for (ifs = ifstats; ifs < ifstats + nifs; ifs++) |
367 |
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bzero(&ifs->ifs_old, sizeof(ifs->ifs_old)); |
368 |
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gotsig_alarm = 1; |
369 |
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break; |
370 |
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case 'B': |
371 |
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show_bits = !show_bits; |
372 |
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if (show_bits) { |
373 |
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FLD_IF_IBYTES->title = "IBITS"; |
374 |
|
|
FLD_IF_OBYTES->title = "OBITS"; |
375 |
|
|
} else { |
376 |
|
|
FLD_IF_IBYTES->title = "IBYTES"; |
377 |
|
|
FLD_IF_OBYTES->title = "OBYTES"; |
378 |
|
|
} |
379 |
|
|
gotsig_alarm = 1; |
380 |
|
|
break; |
381 |
|
|
case 't': |
382 |
|
|
state = TIME; |
383 |
|
|
gotsig_alarm = 1; |
384 |
|
|
break; |
385 |
|
|
default: |
386 |
|
|
return keyboard_callback(ch); |
387 |
|
|
}; |
388 |
|
|
|
389 |
|
|
return 1; |
390 |
|
|
} |
391 |
|
|
|