diff options
Diffstat (limited to 'toys/pending')
| -rw-r--r-- | toys/pending/ping.c | 60 |
1 files changed, 41 insertions, 19 deletions
diff --git a/toys/pending/ping.c b/toys/pending/ping.c index c29fb9df..22c571b3 100644 --- a/toys/pending/ping.c +++ b/toys/pending/ping.c @@ -9,8 +9,9 @@ * (Android does this by default in its init script.) * * Yes, I wimped out and capped -s at sizeof(toybuf), waiting for a complaint... - -USE_PING(NEWTOY(ping, "<1>1t#<0>255=64c#<0=3s#<0>4088=56I:i:W#<0=10w#<0qf46[-46]", TOYFLAG_ROOTONLY|TOYFLAG_USR|TOYFLAG_BIN)) + +// -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" @@ -27,7 +28,7 @@ config PING Options: -4, -6 Force IPv4 or IPv6 -c CNT Send CNT many packets (default 3, 0 = infinite) - -f Flood (. on send, backspace on receive, to show packet drops) + -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) @@ -52,8 +53,10 @@ GLOBALS( 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) @@ -65,6 +68,18 @@ static void xsendto(int sockfd, void *buf, size_t len, struct sockaddr *dest) 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) { @@ -91,9 +106,9 @@ void ping_main(void) } src_addr, src_addr2; struct sockaddr *sa = (void *)&src_addr, *sa2 = (void *)&src_addr2; struct pollfd pfd; - int family = 0, sent = 0, len; + int family = 0, len; long long tnext, tW, tnow, tw; - unsigned short seq = 0; + unsigned short seq = 0, pkttime; struct icmphdr *ih = (void *)toybuf; // Interval @@ -103,14 +118,17 @@ void ping_main(void) 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 = 1000; + } 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) { @@ -146,6 +164,7 @@ void ping_main(void) 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; @@ -170,7 +189,7 @@ void ping_main(void) } if (!(toys.optflags&FLAG_q)) { - printf("Ping %s (%s)", *toys.optargs, ntop(ai->ai_addr)); + printf("Ping %s (%s)", *toys.optargs, ntop(TT.sa)); if (TT.I) { *toybuf = 0; printf(" from %s (%s)", TT.I, ntop(sa)); @@ -191,7 +210,7 @@ void ping_main(void) // 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) || !sent) break; + 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; @@ -207,9 +226,9 @@ void ping_main(void) ih->checksum = 0; ih->checksum = pingchksum((void *)toybuf, TT.s+sizeof(*ih)); - xsendto(TT.sock, toybuf, TT.s+sizeof(*ih), ai->ai_addr); - sent++; - if (toys.optflags&FLAG_f) printf("."); + 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) { @@ -231,24 +250,27 @@ void ping_main(void) len = sizeof(src_addr2); len = recvfrom(TT.sock, toybuf, sizeof(toybuf), 0, sa2, (void *)&len); - sent--; + TT.recv++; + TT.fugit += (pkttime = millitime()-*(unsigned *)(ih+1)); // reply id == 0 for ipv4, 129 for ipv6 if (!(toys.optflags&FLAG_q)) { - printf("%d bytes from %s: icmp_seq=%d ttl=%d", len, ntop(sa2), - ih->un.echo.sequence, 0); - if (len >= sizeof(*ih)+4) { - unsigned lunchtime = millitime()-*(unsigned *)(ih+1); - - printf(" time=%u.%03u", lunchtime/1000, lunchtime%1000); + 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'); } - xputc('\n'); } toys.exitval = 0; } + summary(0); + if (CFG_TOYBOX_FREE) { freeaddrinfo(ai2); if (ifa2) freeifaddrs(ifa2); |