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-rw-r--r--toys/pending/netstat.c383
1 files changed, 0 insertions, 383 deletions
diff --git a/toys/pending/netstat.c b/toys/pending/netstat.c
deleted file mode 100644
index c7ab62d0..00000000
--- a/toys/pending/netstat.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/* netstat.c - Display Linux networking subsystem.
- *
- * Copyright 2012 Ranjan Kumar <ranjankumar.bth@gmail.com>
- * Copyright 2013 Kyungwan Han <asura321@gmail.com>
- *
- * Not in SUSv4.
- *
-USE_NETSTAT(NEWTOY(netstat, "pWrxwutneal", TOYFLAG_BIN))
-config NETSTAT
- bool "netstat"
- default n
- help
- usage: netstat [-pWrxwutneal]
-
- Display networking information. Default is netsat -tuwx
-
- -r routing table
- -a all sockets (not just connected)
- -l listening server sockets
- -t TCP sockets
- -u UDP sockets
- -w raw sockets
- -x unix sockets
- -e extended info
- -n don't resolve names
- -W wide display
- -p PID/Program name of sockets
-*/
-
-#define FOR_netstat
-#include "toys.h"
-#include <net/route.h>
-
-GLOBALS(
- struct num_cache *inodes;
- int wpad;
-);
-
-// convert address into text format.
-static void addr2str(int af, void *addr, unsigned port, char *buf, int len,
- char *proto)
-{
- int pos, count;
- struct servent *ser = 0;
-
- // Convert to numeric address
- if (!inet_ntop(af, addr, buf, 256)) {
- *buf = 0;
-
- return;
- }
- buf[len] = 0;
- pos = strlen(buf);
-
- // If there's no port number, it's a local :* binding, nothing to look up.
- if (!port) {
- if (len-pos<2) pos = len-2;
- strcpy(buf+pos, ":*");
-
- return;
- }
-
- if (!(toys.optflags & FLAG_n)) {
- struct addrinfo hints, *result, *rp;
- char cut[4];
-
- memset(&hints, 0, sizeof(struct addrinfo));
- hints.ai_family = af;
-
- if (!getaddrinfo(buf, NULL, &hints, &result)) {
- socklen_t sock_len = (af == AF_INET) ? sizeof(struct sockaddr_in)
- : sizeof(struct sockaddr_in6);
-
- // We assume that a failing getnameinfo dosn't stomp "buf" here.
- for (rp = result; rp; rp = rp->ai_next)
- if (!getnameinfo(rp->ai_addr, sock_len, buf, 256, 0, 0, 0)) break;
- freeaddrinfo(result);
- buf[len] = 0;
- pos = strlen(buf);
- }
-
- // Doesn't understand proto "tcp6", so truncate
- memcpy(cut, proto, 3);
- cut[3] = 0;
- ser = getservbyport(htons(port), cut);
- }
-
- // Append :service
- count = snprintf(0, 0, ":%u", port);
- if (ser) {
- count = snprintf(0, 0, ":%s", ser->s_name);
- // sheer paranoia
- if (count>=len) {
- count = len-1;
- ser->s_name[count] = 0;
- }
- }
- if (len-pos<count) pos = len-count;
- if (ser) sprintf(buf+pos, ":%s", ser->s_name);
- else sprintf(buf+pos, ":%u", port);
-}
-
-// Display info for tcp/udp/raw
-static void show_ip(char *fname)
-{
- 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;
- }
-
- if(!fgets(toybuf, sizeof(toybuf), fp)) return; //skip header.
-
- while (fgets(toybuf, sizeof(toybuf), fp)) {
- char lip[256], rip[256];
- union {
- struct {unsigned u; unsigned char b[4];} i4;
- struct {struct {unsigned a, b, c, d;} u; unsigned char b[16];} i6;
- } laddr, raddr;
- 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,
- &laddr.i6.u.d, &lport, &raddr.i6.u.a, &raddr.i6.u.b,
- &raddr.i6.u.c, &raddr.i6.u.d, &rport, &state, &txq, &rxq,
- &uid, &inode);
-
- if (nitems!=16) {
- nitems = sscanf(toybuf,
- " %d: %x:%x %x:%x %x %x:%x %*X:%*X %*X %d %*d %ld",
- &num, &laddr.i4.u, &lport, &raddr.i4.u, &rport, &state, &txq,
- &rxq, &uid, &inode);
-
- if (nitems!=10) continue;
- 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);
-
- // 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);
-}
-
-static void show_unix_sockets(void)
-{
- char *types[] = {"","STREAM","DGRAM","RAW","RDM","SEQPACKET","DCCP","PACKET"},
- *states[] = {"","LISTENING","CONNECTING","CONNECTED","DISCONNECTING"},
- *s, *ss;
- unsigned long refcount, flags, type, state, inode;
- FILE *fp = xfopen("/proc/net/unix", "r");
-
- if(!fgets(toybuf, sizeof(toybuf), fp)) return; //skip header.
-
- while (fgets(toybuf, sizeof(toybuf), fp)) {
- unsigned offset = 0;
-
- // count = 6 or 7 (first field ignored, sockets don't always have filenames)
- if (6<sscanf(toybuf, "%*p: %lX %*X %lX %lX %lX %lu %n",
- &refcount, &flags, &type, &state, &inode, &offset))
- continue;
-
- // Linux exports only SO_ACCEPTCON since 2.3.15pre3 in 1999, but let's
- // filter in case they add more someday.
- flags &= 1<<16;
-
- // Only show unconnected listening sockets with -a
- if (state==1 && flags && !(toys.optflags&FLAG_a)) continue;
-
- if (type==10) type = 7; // move SOCK_PACKET into line
- if (type>ARRAY_LEN(types)) type = 0;
- if (state>ARRAY_LEN(states) || (state==1 && !flags)) state = 0;
- sprintf(toybuf, "[ %s]", flags ? "ACC " : "");
-
- printf("unix %-6ld %-11s %-10s %-13s %8lu ",
- refcount, toybuf, types[type], states[state], inode);
- if (toys.optflags & FLAG_p) {
- struct num_cache *nc = get_num_cache(TT.inodes, inode);
-
- printf("%-19.19s", nc ? nc->data : "-");
- }
-
- if (offset) {
- if ((ss = strrchr(s = toybuf+offset, '\n'))) *ss = 0;
- printf("%s", s);
- }
- xputc('\n');
- }
-
- fclose(fp);
-}
-
-static int scan_pids(struct dirtree *node)
-{
- char *s = toybuf+256;
- struct dirent *entry;
- DIR *dp;
- int pid, dirfd;
-
- if (!node->parent) return DIRTREE_RECURSE;
- if (!(pid = atol(node->name))) return 0;
-
- sprintf(toybuf, "/proc/%d/cmdline", pid);
- if (!(readfile(toybuf, toybuf, 256))) return 0;
-
- sprintf(s, "%d/fd", pid);
- if (-1==(dirfd = openat(dirtree_parentfd(node), s, O_RDONLY))) return 0;
- if (!(dp = fdopendir(dirfd))) {
- close(dirfd);
-
- return 0;
- }
-
- while ((entry = readdir(dp))) {
- s = toybuf+256;
- if (!readlinkat0(dirfd, entry->d_name, s, sizeof(toybuf)-256)) continue;
- // Can the "[0000]:" happen in a modern kernel?
- if (strstart(&s, "socket:[") || strstart(&s, "[0000]:")) {
- long long ll = atoll(s);
-
- sprintf(s, "%d/%s", pid, getbasename(toybuf));
- add_num_cache(&TT.inodes, ll, s, strlen(s)+1);
- }
- }
- closedir(dp);
-
- return 0;
-}
-
-/*
- * extract inet4 route info from /proc/net/route file and display it.
- */
-static void display_routes(void)
-{
- static const char flagchars[] = "GHRDMDAC";
- static const unsigned flagarray[] = {
- RTF_GATEWAY, RTF_HOST, RTF_REINSTATE, RTF_DYNAMIC, RTF_MODIFIED
- };
- unsigned long dest, gate, mask;
- int flags, ref, use, metric, mss, win, irtt;
- char *out = toybuf, *flag_val;
- char iface[64]={0};
- FILE *fp = xfopen("/proc/net/route", "r");
-
- if(!fgets(toybuf, sizeof(toybuf), fp)) return; //skip header.
-
- printf("Kernel IP routing table\n"
- "Destination\tGateway \tGenmask \tFlags %s Iface\n",
- !(toys.optflags&FLAG_e) ? " MSS Window irtt" : "Metric Ref Use");
-
- while (fgets(toybuf, sizeof(toybuf), fp)) {
- char *destip = 0, *gateip = 0, *maskip = 0;
-
- if (11 != sscanf(toybuf, "%63s%lx%lx%X%d%d%d%lx%d%d%d", iface, &dest,
- &gate, &flags, &ref, &use, &metric, &mask, &mss, &win, &irtt))
- break;
-
- // skip down interfaces.
- if (!(flags & RTF_UP)) continue;
-
-// TODO /proc/net/ipv6_route
-
- if (dest) {
- if (inet_ntop(AF_INET, &dest, out, 16)) destip = out;
- } else destip = (toys.optflags&FLAG_n) ? "0.0.0.0" : "default";
- out += 16;
-
- if (gate) {
- if (inet_ntop(AF_INET, &gate, out, 16)) gateip = out;
- } else gateip = (toys.optflags&FLAG_n) ? "0.0.0.0" : "*";
- out += 16;
-
-// TODO /24
- //For Mask
- if (inet_ntop(AF_INET, &mask, out, 16)) maskip = out;
- else maskip = "?";
- out += 16;
-
- //Get flag Values
- flag_val = out;
- *out++ = 'U';
- for (dest = 0; dest < ARRAY_LEN(flagarray); dest++)
- if (flags&flagarray[dest]) *out++ = flagchars[dest];
- *out = 0;
- if (flags & RTF_REJECT) *flag_val = '!';
-
- printf("%-15.15s %-15.15s %-16s%-6s", destip, gateip, maskip, flag_val);
- if (!(toys.optflags & FLAG_e))
- printf("%5d %-5d %6d %s\n", mss, win, irtt, iface);
- else printf("%-6d %-2d %7d %s\n", metric, ref, use, iface);
- }
-
- fclose(fp);
-}
-
-void netstat_main(void)
-{
- int tuwx = FLAG_t|FLAG_u|FLAG_w|FLAG_x;
- char *type = "w/o";
-
- TT.wpad = (toys.optflags&FLAG_W) ? 51 : 23;
- if (!(toys.optflags&(FLAG_r|tuwx))) toys.optflags |= tuwx;
- if (toys.optflags & FLAG_r) display_routes();
- if (!(toys.optflags&tuwx)) return;
-
- if (toys.optflags & FLAG_a) type = "established and";
- else if (toys.optflags & FLAG_l) type = "only";
-
- if (toys.optflags & FLAG_p) dirtree_read("/proc", scan_pids);
-
- if (toys.optflags&(FLAG_t|FLAG_u|FLAG_w)) {
- printf("Active %s (%s servers)\n", "Internet connections", type);
- printf("Proto Recv-Q Send-Q %*s %*s State ", -TT.wpad, "Local Address",
- -TT.wpad, "Foreign Address");
- if (toys.optflags & FLAG_e) printf(" User Inode ");
- if (toys.optflags & FLAG_p) printf(" PID/Program Name");
- xputc('\n');
-
- if (toys.optflags & FLAG_t) {
- show_ip("/proc/net/tcp");
- show_ip("/proc/net/tcp6");
- }
- if (toys.optflags & FLAG_u) {
- show_ip("/proc/net/udp");
- show_ip("/proc/net/udp6");
- }
- if (toys.optflags & FLAG_w) {
- show_ip("/proc/net/raw");
- show_ip("/proc/net/raw6");
- }
- }
-
- if (toys.optflags & FLAG_x) {
- printf("Active %s (%s servers)\n", "UNIX domain sockets", type);
-
- printf("Proto RefCnt Flags\t Type\t State\t %s Path\n",
- (toys.optflags&FLAG_p) ? "PID/Program Name" : "I-Node");
- show_unix_sockets();
- }
-
- if ((toys.optflags & FLAG_p) && CFG_TOYBOX_FREE)
- llist_traverse(TT.inodes, free);
- toys.exitval = 0;
-}
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