diff options
Diffstat (limited to 'toys/pending/netstat.c')
| -rw-r--r-- | toys/pending/netstat.c | 87 |
1 files changed, 40 insertions, 47 deletions
diff --git a/toys/pending/netstat.c b/toys/pending/netstat.c index c14c79e0..c7ab62d0 100644 --- a/toys/pending/netstat.c +++ b/toys/pending/netstat.c @@ -12,7 +12,7 @@ config NETSTAT help usage: netstat [-pWrxwutneal] - Display networking information. + Display networking information. Default is netsat -tuwx -r routing table -a all sockets (not just connected) @@ -24,7 +24,7 @@ config NETSTAT -e extended info -n don't resolve names -W wide display - -p PID/Program name for sockets + -p PID/Program name of sockets */ #define FOR_netstat @@ -36,45 +36,6 @@ GLOBALS( int wpad; ); -/* - * For TCP/UDP/RAW display data. - */ -static void display_data(unsigned rport, char *proto, - unsigned rxq, unsigned txq, char *lip, char *rip, - unsigned state, unsigned uid, unsigned long inode) -{ - char *ss_state = "UNKNOWN", buf[12], *s; - char *state_label[] = {"", "ESTABLISHED", "SYN_SENT", "SYN_RECV", "FIN_WAIT1", - "FIN_WAIT2", "TIME_WAIT", "CLOSE", "CLOSE_WAIT", - "LAST_ACK", "LISTEN", "CLOSING", "UNKNOWN"}; - struct passwd *pw; - - s = proto; - if (strstart(&s, "tcp")) { - int sz = ARRAY_LEN(state_label); - if (!state || state >= sz) state = sz-1; - ss_state = state_label[state]; - } else if (strstart(&s, "udp")) { - if (state == 1) ss_state = state_label[state]; - else if (state == 7) ss_state = ""; - } else if (strstart(&s, "raw")) sprintf(ss_state = buf, "%u", state); - - if (!(toys.optflags & FLAG_n) && (pw = bufgetpwuid(uid))) - snprintf(toybuf, sizeof(toybuf), "%s", pw->pw_name); - else snprintf(toybuf, sizeof(toybuf), "%d", uid); - - printf("%-6s%6d%7d ", proto, rxq, txq); - printf("%*.*s %*.*s ", -TT.wpad, TT.wpad, lip, -TT.wpad, TT.wpad, rip); - printf("%-11s", ss_state); - if ((toys.optflags & FLAG_e)) printf(" %-10s %-11ld", toybuf, inode); - if ((toys.optflags & FLAG_p)) { - struct num_cache *nc = get_num_cache(TT.inodes, inode); - - printf(" %s", nc ? nc->data : "-"); - } - xputc('\n'); -} - // convert address into text format. static void addr2str(int af, void *addr, unsigned port, char *buf, int len, char *proto) @@ -142,8 +103,13 @@ static void addr2str(int af, void *addr, unsigned port, char *buf, int len, // Display info for tcp/udp/raw static void show_ip(char *fname) { - char *label = strrchr(fname, '/')+1; + char *ss_state = "UNKNOWN", buf[12], *s, *label = strrchr(fname, '/')+1; + char *state_label[] = {"", "ESTABLISHED", "SYN_SENT", "SYN_RECV", "FIN_WAIT1", + "FIN_WAIT2", "TIME_WAIT", "CLOSE", "CLOSE_WAIT", + "LAST_ACK", "LISTEN", "CLOSING", "UNKNOWN"}; + struct passwd *pw; FILE *fp = fopen(fname, "r"); + if (!fp) { perror_msg("'%s'", fname); return; @@ -160,6 +126,7 @@ static void show_ip(char *fname) unsigned lport, rport, state, txq, rxq, num, uid, nitems; unsigned long inode; + // Try ipv6, then try ipv4 nitems = sscanf(toybuf, " %d: %8x%8x%8x%8x:%x %8x%8x%8x%8x:%x %x %x:%x %*X:%*X %*X %d %*d %ld", &num, &laddr.i6.u.a, &laddr.i6.u.b, &laddr.i6.u.c, @@ -177,13 +144,39 @@ static void show_ip(char *fname) nitems = AF_INET; } else nitems = AF_INET6; + // Should we display this? (listening or all or TCP/UDP/RAW) + if (!((toys.optflags & FLAG_l) && (!rport && (state & 0xA))) + && !(toys.optflags & FLAG_a) && !(rport & (0x10 | 0x20 | 0x40))) + continue; + addr2str(nitems, &laddr, lport, lip, TT.wpad, label); addr2str(nitems, &raddr, rport, rip, TT.wpad, label); - // listening or all or TCP/UDP/RAW - if (((toys.optflags & FLAG_l) && (!rport && (state & 0xA))) - || (toys.optflags & FLAG_a) || (rport & (0x10 | 0x20 | 0x40))) - display_data(rport, label, rxq, txq, lip, rip, state, uid, inode); + // Display data + s = label; + if (strstart(&s, "tcp")) { + int sz = ARRAY_LEN(state_label); + if (!state || state >= sz) state = sz-1; + ss_state = state_label[state]; + } else if (strstart(&s, "udp")) { + if (state == 1) ss_state = state_label[state]; + else if (state == 7) ss_state = ""; + } else if (strstart(&s, "raw")) sprintf(ss_state = buf, "%u", state); + + if (!(toys.optflags & FLAG_n) && (pw = bufgetpwuid(uid))) + snprintf(toybuf, sizeof(toybuf), "%s", pw->pw_name); + else snprintf(toybuf, sizeof(toybuf), "%d", uid); + + printf("%-6s%6d%7d ", label, rxq, txq); + printf("%*.*s %*.*s ", -TT.wpad, TT.wpad, lip, -TT.wpad, TT.wpad, rip); + printf("%-11s", ss_state); + if ((toys.optflags & FLAG_e)) printf(" %-10s %-11ld", toybuf, inode); + if ((toys.optflags & FLAG_p)) { + struct num_cache *nc = get_num_cache(TT.inodes, inode); + + printf(" %s", nc ? nc->data : "-"); + } + xputc('\n'); } fclose(fp); } @@ -291,7 +284,7 @@ static void display_routes(void) if(!fgets(toybuf, sizeof(toybuf), fp)) return; //skip header. printf("Kernel IP routing table\n" - "Destination Gateway Genmask Flags %s Iface\n", + "Destination\tGateway \tGenmask \tFlags %s Iface\n", !(toys.optflags&FLAG_e) ? " MSS Window irtt" : "Metric Ref Use"); while (fgets(toybuf, sizeof(toybuf), fp)) { |