Promote ping to toys/net

1 files changed, 0 insertions, 278 deletions

diff --git a/toys/pending/ping.c b/toys/pending/ping.c
deleted file mode 100644
index 22c571b3..00000000
--- a/toys/pending/ping.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/* ping.c - check network connectivity
- *
- * Copyright 2014 Rob Landley <rob@landley.net>
- *
- * Not in SUSv4.
- *
- * Note: ping_group_range should never have existed. To disable it, do:
- *   echo 0 $(((1<<31)-1)) > /proc/sys/net/ipv4/ping_group_range
- * (Android does this by default in its init script.)
- *
- * Yes, I wimped out and capped -s at sizeof(toybuf), waiting for a complaint...
-
-// -s > 4088 = sizeof(toybuf)-sizeof(struct icmphdr), then kernel adds 20 bytes
-USE_PING(NEWTOY(ping, "<1>1t#<0>255=64c#<0=3s#<0>4088=56I:i:W#<0=10w#<0qf46[-46]", TOYFLAG_USR|TOYFLAG_BIN))
- 
-config PING
-  bool "ping"
-  default n
-  help
-    usage: ping [OPTIONS] HOST
-
-    Check network connectivity by sending packets to a host and reporting
-    its response.
-
-    Send ICMP ECHO_REQUEST packets to ipv4 or ipv6 addresses and prints each
-    echo it receives back, with round trip time. Returns true if host alive.
-
-    Options:
-    -4, -6      Force IPv4 or IPv6
-    -c CNT      Send CNT many packets (default 3, 0 = infinite)
-    -f          Flood (print . and \b to show drops, default -c 15 -i 0.2)
-    -i TIME     Interval between packets (default 1, need root for < .2)
-    -I IFACE/IP Source interface or address
-    -q          Quiet (stops after one returns true if host is alive)
-    -s SIZE     Data SIZE in bytes (default 56)
-    -t TTL      Set Time To Live (number of hops)
-    -W SEC      Seconds to wait for response after -c (default 10)
-    -w SEC      Exit after this many seconds
-*/
-
-#define FOR_ping 
-#include "toys.h"
-
-#include <ifaddrs.h>
-#include <netinet/ip_icmp.h>
-
-GLOBALS(
-  long w;
-  long W;
-  char *i;
-  char *I;
-  long s;
-  long c;
-  long t;
-
-  struct sockaddr *sa;
-  int sock;
-  long i_ms;
-  unsigned long sent, recv, fugit, min, max;
-)
-
-static void xsendto(int sockfd, void *buf, size_t len, struct sockaddr *dest)
-{
-  int rc = sendto(TT.sock, buf, len, 0, dest,
-    dest->sa_family == AF_INET ? sizeof(struct sockaddr_in) :
-      sizeof(struct sockaddr_in6));
-
-  if (rc != len) perror_exit("sendto");
-}
-
-static void summary(int sig)
-{
-  if (!(toys.optflags&FLAG_q) && TT.sent && TT.sa) {
-    printf("\n--- %s ping statistics ---\n", ntop(TT.sa));
-    printf("%lu packets transmitted, %lu received, %ld%% packet loss\n",
-      TT.sent, TT.recv, ((TT.sent-TT.recv)*100)/TT.sent);
-    printf("round-trip min/avg/max = %lu/%lu/%lu ms\n",
-      TT.min, TT.max, TT.fugit/TT.recv);
-  }
-  TT.sa = 0;
-}
-
-// assumes aligned and can read even number of bytes
-static unsigned short pingchksum(unsigned short *data, int len)
-{
-  unsigned short u = 0, d;
-
-  // circular carry is endian independent: bits from high byte go to low byte
-  while (len>0) {
-    d = *data++;
-    if (len == 1) d &= 255<<IS_BIG_ENDIAN;
-    if (d >= (u += d)) u++;
-    len -= 2;
-  }
-
-  return u;
-}
-
-void ping_main(void)
-{
-  struct addrinfo *ai, *ai2;
-  struct ifaddrs *ifa, *ifa2 = 0;
-  union {
-    struct sockaddr_in in;
-    struct sockaddr_in6 in6;
-  } src_addr, src_addr2;
-  struct sockaddr *sa = (void *)&src_addr, *sa2 = (void *)&src_addr2;
-  struct pollfd pfd;
-  int family = 0, len;
-  long long tnext, tW, tnow, tw;
-  unsigned short seq = 0, pkttime;
-  struct icmphdr *ih = (void *)toybuf;
-
-  // Interval
-  if (TT.i) {
-    long frac;
-
-    TT.i_ms = xparsetime(TT.i, 1000, &frac) * 1000;
-    TT.i_ms += frac;
-    if (TT.i_ms<200 && getuid()) error_exit("need root for -i <200");
-  } else TT.i_ms = (toys.optflags&FLAG_f) ? 200 : 1000;
-  if (!(toys.optflags&FLAG_s)) TT.s = 56; // 64-PHDR_LEN
-  if ((toys.optflags&(FLAG_f|FLAG_c)) == FLAG_f) TT.c = 15;
-
-  // ipv4 or ipv6? (0 = autodetect if -I or arg have only one address type.)
-  if (toys.optflags&FLAG_6) family = AF_INET6;
-  else if (toys.optflags&FLAG_4) family = AF_INET;
-  else family = 0;
-
-  sigatexit(summary);
-
-  // If -I src_addr look it up. Allow numeric address of correct type.
-  memset(&src_addr, 0, sizeof(src_addr));
-  if (TT.I) {
-    if (!(toys.optflags&FLAG_6) && inet_pton(AF_INET, TT.I,
-      (void *)&src_addr.in.sin_addr))
-        family = AF_INET;
-    else if (!(toys.optflags&FLAG_4) && inet_pton(AF_INET6, TT.I,
-      (void *)&src_addr.in6.sin6_addr))
-        family = AF_INET6;
-    else if (getifaddrs(&ifa2)) perror_exit("getifaddrs");
-  }
-
-  // Look up HOST address, filtering for correct type and interface.
-  // If -I but no -46 then find compatible type between -I and HOST
-  ai2 = xgetaddrinfo(*toys.optargs, 0, family, 0, 0, 0);
-  for (ai = ai2; ai; ai = ai->ai_next) {
-
-    // correct type?
-    if (family && family!=ai->ai_family) continue;
-    if (ai->ai_family!=AF_INET && ai->ai_family!=AF_INET6) continue;
-
-    // correct interface?
-    if (!TT.I || !ifa2) break;
-    for (ifa = ifa2; ifa; ifa = ifa->ifa_next) {
-      if (!ifa->ifa_addr || ifa->ifa_addr->sa_family!=ai->ai_family
-          || strcmp(ifa->ifa_name, TT.I)) continue;
-      sa = (void *)ifa->ifa_addr;
-
-      break;
-    }
-    if (ifa) break;
-  }
-
-  if (!ai)
-    error_exit("no v%d addr for -I %s", 4+2*(family==AF_INET6), TT.I);
-  TT.sa = ai->ai_addr;
-
-  // Open DGRAM socket
-  sa->sa_family = ai->ai_family;
-  TT.sock = socket(ai->ai_family, SOCK_DGRAM,
-    len = (ai->ai_family == AF_INET) ? IPPROTO_ICMP : IPPROTO_ICMPV6);
-  if (TT.sock == -1) {
-    perror_msg("socket SOCK_DGRAM %x", len);
-    if (errno == EACCES) {
-      fprintf(stderr, "Kernel bug workaround (as root):\n");
-      fprintf(stderr, "echo 0 9999999 > /proc/sys/net/ipv4/ping_group_range\n");
-    }
-    xexit();
-  }
-  if (TT.I && bind(TT.sock, sa, sizeof(src_addr))) perror_exit("bind");
-
-  if (TT.t) {
-    len = TT.t;
-
-    if (ai->ai_family == AF_INET)
-      setsockopt(TT.sock, IPPROTO_IP, IP_TTL, &len, 4);
-    else setsockopt(TT.sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &len, 4);
-  }
-
-  if (!(toys.optflags&FLAG_q)) {
-    printf("Ping %s (%s)", *toys.optargs, ntop(TT.sa));
-    if (TT.I) {
-      *toybuf = 0;
-      printf(" from %s (%s)", TT.I, ntop(sa));
-    }
-    // 20 byte TCP header, 8 byte ICMP header, plus data payload
-    printf(": %ld(%ld) bytes.\n", TT.s, TT.s+28);
-  }
-  toys.exitval = 1;
-
-  tW = tw = 0;
-  tnext = millitime();
-  if (TT.w) tw = TT.w*1000+tnext;
-
-  // Send/receive packets
-  for (;;) {
-    int waitms = INT_MAX;
-
-    // Exit due to timeout? (TODO: timeout is after last packet, waiting if
-    // any packets ever dropped. Not timeout since packet was dropped.)
-    tnow = millitime();
-    if (tW) if (0>=(waitms = tW-tnow) || !(TT.sent-TT.recv)) break;
-    if (tw) {
-      if (tnow>tw) break;
-      else if (waitms>tw-tnow) waitms = tw-tnow;
-    // Time to send the next packet?
-    } else if (tnext-tnow <= 0) {
-      tnext += TT.i_ms;
-
-      memset(ih, 0, sizeof(*ih));
-      ih->type = (ai->ai_family == AF_INET) ? 8 : 128;
-      ih->un.echo.id = getpid();
-      ih->un.echo.sequence = ++seq;
-      if (TT.s >= 4) *(unsigned *)(ih+1) = tnow;
-
-      ih->checksum = 0;
-      ih->checksum = pingchksum((void *)toybuf, TT.s+sizeof(*ih));
-      xsendto(TT.sock, toybuf, TT.s+sizeof(*ih), TT.sa);
-      TT.sent++;
-      if ((toys.optflags&(FLAG_f|FLAG_q)) == FLAG_f) xputc('.');
-
-      // last packet?
-      if (TT.c) if (!--TT.c) {
-        if (!TT.W) break;
-        tW = tnow + TT.W*1000;
-      }
-    }
-
-    // This is down here so it's against new period if we just sent a packet
-    if (!tw && waitms>tnext-tnow) waitms = tnext-tnow;
-
-    // wait for next packet or timeout
-
-    if (waitms<0) waitms = 0;
-    pfd.fd = TT.sock;
-    pfd.events = POLLIN;
-    if (0>(len = poll(&pfd, 1, waitms))) break;
-    if (!len) continue;
-
-    len = sizeof(src_addr2);
-    len = recvfrom(TT.sock, toybuf, sizeof(toybuf), 0, sa2, (void *)&len);
-    TT.recv++;
-    TT.fugit += (pkttime = millitime()-*(unsigned *)(ih+1));
-
-    // reply id == 0 for ipv4, 129 for ipv6
-
-    if (!(toys.optflags&FLAG_q)) {
-      if (toys.optflags&FLAG_f) xputc('\b');
-      else {
-        printf("%d bytes from %s: icmp_seq=%d ttl=%d", len, ntop(sa2),
-               ih->un.echo.sequence, 0);
-        if (len >= sizeof(*ih)+4)
-          printf(" time=%u ms", pkttime);
-        xputc('\n');
-      }
-    }
-
-    toys.exitval = 0;
-  }
-
-  summary(0);
-
-  if (CFG_TOYBOX_FREE) {
-    freeaddrinfo(ai2);
-    if (ifa2) freeifaddrs(ifa2);
-  }
-}