/* $OpenBSD: if.c,v 1.13 2009/04/03 20:29:21 deraadt Exp $ */ /* * Copyright (c) 2004 Markus Friedl * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include "systat.h" static enum state { BOOT, TIME, RUN } state = TIME; struct ifcount { u_int64_t ifc_ib; /* input bytes */ u_int64_t ifc_ip; /* input packets */ u_int64_t ifc_ie; /* input errors */ u_int64_t ifc_ob; /* output bytes */ u_int64_t ifc_op; /* output packets */ u_int64_t ifc_oe; /* output errors */ u_int64_t ifc_co; /* collisions */ int ifc_flags; /* up / down */ int ifc_state; /* link state */ } sum; struct ifstat { char ifs_name[IFNAMSIZ]; /* interface name */ char ifs_description[IFDESCRSIZE]; struct ifcount ifs_cur; struct ifcount ifs_old; struct ifcount ifs_now; } *ifstats; static int nifs = 0; static int num_ifs = 0; void print_if(void); int read_if(void); int select_if(void); int if_keyboard_callback(int); static void fetchifstat(void); static void showifstat(struct ifstat *); static void showtotal(void); /* Define fields */ field_def fields_if[] = { {"IFACE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, {"STATE", 4, 6, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, {"IPKTS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"IBYTES", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"IERRS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"OPKTS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"OBYTES", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"OERRS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"COLLS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, {"DESC", 14, 64, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, }; #define FIELD_ADDR(x) (&fields_if[x]) #define FLD_IF_IFACE FIELD_ADDR(0) #define FLD_IF_STATE FIELD_ADDR(1) #define FLD_IF_IPKTS FIELD_ADDR(2) #define FLD_IF_IBYTES FIELD_ADDR(3) #define FLD_IF_IERRS FIELD_ADDR(4) #define FLD_IF_OPKTS FIELD_ADDR(5) #define FLD_IF_OBYTES FIELD_ADDR(6) #define FLD_IF_OERRS FIELD_ADDR(7) #define FLD_IF_COLLS FIELD_ADDR(8) #define FLD_IF_DESC FIELD_ADDR(9) /* Define views */ field_def *view_if_0[] = { FLD_IF_IFACE, FLD_IF_STATE, FLD_IF_DESC, FLD_IF_IPKTS, FLD_IF_IBYTES, FLD_IF_IERRS, FLD_IF_OPKTS, FLD_IF_OBYTES, FLD_IF_OERRS, FLD_IF_COLLS, NULL }; /* Define view managers */ struct view_manager ifstat_mgr = { "Ifstat", select_if, read_if, NULL, print_header, print_if, if_keyboard_callback, NULL, NULL }; field_view views_if[] = { {view_if_0, "ifstat", '1', &ifstat_mgr}, {NULL, NULL, 0, NULL} }; int initifstat(void) { field_view *v; read_if(); for (v = views_if; v->name != NULL; v++) add_view(v); return(1); } #define UPDATE(x, y) do { \ ifs->ifs_now.x = ifm.y; \ ifs->ifs_cur.x = ifs->ifs_now.x - ifs->ifs_old.x; \ if (state == TIME) {\ ifs->ifs_old.x = ifs->ifs_now.x; \ ifs->ifs_cur.x /= naptime; \ } \ sum.x += ifs->ifs_cur.x; \ } while(0) void rt_getaddrinfo(struct sockaddr *sa, int addrs, struct sockaddr **info) { int i; for (i = 0; i < RTAX_MAX; i++) { if (addrs & (1 << i)) { info[i] = sa; sa = (struct sockaddr *) ((char *)(sa) + roundup(sa->sa_len, sizeof(long))); } else info[i] = NULL; } } int select_if(void) { num_disp = num_ifs + 1; return (0); } int read_if(void) { fetchifstat(); num_disp = num_ifs + 1; return 0; } void print_if(void) { int n, i, count = 0; for (n = 0, i = 0; n < nifs; n++) { if (ifstats[n].ifs_name[0] == '\0') continue; if (i++ < dispstart) continue; if (i == num_disp) break; showifstat(ifstats + n); if (maxprint > 0 && ++count >= maxprint) return; } showtotal(); } static void fetchifstat(void) { struct ifstat *newstats, *ifs; struct if_msghdr ifm; struct sockaddr *info[RTAX_MAX]; struct sockaddr_dl *sdl; char *buf, *next, *lim; static int s = -1; int mib[6]; size_t need; mib[0] = CTL_NET; mib[1] = AF_ROUTE; mib[2] = 0; mib[3] = 0; mib[4] = NET_RT_IFLIST; mib[5] = 0; if (sysctl(mib, 6, NULL, &need, NULL, 0) == -1) return; if ((buf = malloc(need)) == NULL) return; if (sysctl(mib, 6, buf, &need, NULL, 0) == -1) { free(buf); return; } bzero(&sum, sizeof(sum)); num_ifs = 0; lim = buf + need; for (next = buf; next < lim; next += ifm.ifm_msglen) { bcopy(next, &ifm, sizeof ifm); if (ifm.ifm_type != RTM_IFINFO || !(ifm.ifm_addrs & RTA_IFP)) continue; if (ifm.ifm_index >= nifs) { if ((newstats = realloc(ifstats, (ifm.ifm_index + 4) * sizeof(struct ifstat))) == NULL) continue; ifstats = newstats; for (; nifs < ifm.ifm_index + 4; nifs++) bzero(&ifstats[nifs], sizeof(*ifstats)); } ifs = &ifstats[ifm.ifm_index]; if (ifs->ifs_name[0] == '\0') { bzero(&info, sizeof(info)); rt_getaddrinfo( (struct sockaddr *)((struct if_msghdr *)next + 1), ifm.ifm_addrs, info); sdl = (struct sockaddr_dl *)info[RTAX_IFP]; if (sdl && sdl->sdl_family == AF_LINK && sdl->sdl_nlen > 0) { struct ifreq ifrdesc; char ifdescr[IFDESCRSIZE]; int s; bcopy(sdl->sdl_data, ifs->ifs_name, sdl->sdl_nlen); ifs->ifs_name[sdl->sdl_nlen] = '\0'; /* Get the interface description */ memset(&ifrdesc, 0, sizeof(ifrdesc)); strlcpy(ifrdesc.ifr_name, ifs->ifs_name, sizeof(ifrdesc.ifr_name)); ifrdesc.ifr_data = (caddr_t)&ifdescr; s = socket(AF_INET, SOCK_DGRAM, 0); if (s != -1) { if (ioctl(s, SIOCGIFDESCR, &ifrdesc) == 0) strlcpy(ifs->ifs_description, ifrdesc.ifr_data, sizeof(ifs->ifs_description)); close(s); } } if (ifs->ifs_name[0] == '\0') continue; } num_ifs++; UPDATE(ifc_ip, ifm_data.ifi_ipackets); UPDATE(ifc_ib, ifm_data.ifi_ibytes); UPDATE(ifc_ie, ifm_data.ifi_ierrors); UPDATE(ifc_op, ifm_data.ifi_opackets); UPDATE(ifc_ob, ifm_data.ifi_obytes); UPDATE(ifc_oe, ifm_data.ifi_oerrors); UPDATE(ifc_co, ifm_data.ifi_collisions); ifs->ifs_cur.ifc_flags = ifm.ifm_flags; ifs->ifs_cur.ifc_state = ifm.ifm_data.ifi_link_state; } free(buf); } static void showifstat(struct ifstat *ifs) { print_fld_str(FLD_IF_IFACE, ifs->ifs_name); tb_start(); tbprintf("%s", ifs->ifs_cur.ifc_flags & IFF_UP ? "up" : "dn"); switch (ifs->ifs_cur.ifc_state) { case LINK_STATE_UP: case LINK_STATE_HALF_DUPLEX: case LINK_STATE_FULL_DUPLEX: tbprintf(":U"); break; case LINK_STATE_DOWN: tbprintf (":D"); break; } print_fld_tb(FLD_IF_STATE); print_fld_str(FLD_IF_DESC, ifs->ifs_description); print_fld_size(FLD_IF_IBYTES, ifs->ifs_cur.ifc_ib); print_fld_size(FLD_IF_IPKTS, ifs->ifs_cur.ifc_ip); print_fld_size(FLD_IF_IERRS, ifs->ifs_cur.ifc_ie); print_fld_size(FLD_IF_OBYTES, ifs->ifs_cur.ifc_ob); print_fld_size(FLD_IF_OPKTS, ifs->ifs_cur.ifc_op); print_fld_size(FLD_IF_OERRS, ifs->ifs_cur.ifc_oe); print_fld_size(FLD_IF_COLLS, ifs->ifs_cur.ifc_co); end_line(); } static void showtotal(void) { print_fld_str(FLD_IF_IFACE, "Totals"); print_fld_size(FLD_IF_IBYTES, sum.ifc_ib); print_fld_size(FLD_IF_IPKTS, sum.ifc_ip); print_fld_size(FLD_IF_IERRS, sum.ifc_ie); print_fld_size(FLD_IF_OBYTES, sum.ifc_ob); print_fld_size(FLD_IF_OPKTS, sum.ifc_op); print_fld_size(FLD_IF_OERRS, sum.ifc_oe); print_fld_size(FLD_IF_COLLS, sum.ifc_co); end_line(); } int if_keyboard_callback(int ch) { struct ifstat *ifs; switch (ch) { case 'r': for (ifs = ifstats; ifs < ifstats + nifs; ifs++) ifs->ifs_old = ifs->ifs_now; state = RUN; gotsig_alarm = 1; break; case 'b': state = BOOT; for (ifs = ifstats; ifs < ifstats + nifs; ifs++) bzero(&ifs->ifs_old, sizeof(ifs->ifs_old)); gotsig_alarm = 1; break; case 't': state = TIME; gotsig_alarm = 1; break; default: return keyboard_callback(ch); }; return 1; }