From 20f43874ed917a3fbab67016d3ae88e83080861e Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sat, 24 May 2014 14:59:26 +0200 Subject: remove suid bit from busybox, try experimental ping patch from John Spencer --- package/busybox/patches/004-ping.patch | 1135 ++++++++++++++++++++++++++++++++ 1 file changed, 1135 insertions(+) create mode 100644 package/busybox/patches/004-ping.patch (limited to 'package') diff --git a/package/busybox/patches/004-ping.patch b/package/busybox/patches/004-ping.patch new file mode 100644 index 000000000..aeb1f9706 --- /dev/null +++ b/package/busybox/patches/004-ping.patch @@ -0,0 +1,1135 @@ +diff -Nur busybox-1.22.1.orig/networking/ping.c busybox-1.22.1/networking/ping.c +--- busybox-1.22.1.orig/networking/ping.c 2014-01-20 03:38:10.000000000 +0100 ++++ busybox-1.22.1/networking/ping.c 2014-05-24 14:31:09.000000000 +0200 +@@ -152,6 +152,7 @@ + pingsock = 0, + }; + ++static int using_dgram; + static void + #if ENABLE_PING6 + create_icmp_socket(len_and_sockaddr *lsa) +@@ -184,6 +185,7 @@ + if (sock < 0) + #endif + bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); ++ using_dgram = 1; + } + + xmove_fd(sock, pingsock); +@@ -234,10 +236,12 @@ + bb_perror_msg("recvfrom"); + continue; + } +- if (c >= 76) { /* ip + icmp */ +- struct iphdr *iphdr = (struct iphdr *) G.packet; ++ if (c >= 76 || using_dgram && (c == 64)) { /* ip + icmp */ ++ if(!using_dgram) { ++ struct iphdr *iphdr = (struct iphdr *) G.packet; + +- pkt = (struct icmp *) (G.packet + (iphdr->ihl << 2)); /* skip ip hdr */ ++ pkt = (struct icmp *) (G.packet + (iphdr->ihl << 2)); /* skip ip hdr */ ++ } else pkt = (struct icmp *) G.packet; + if (pkt->icmp_type == ICMP_ECHOREPLY) + break; + } +@@ -628,19 +632,21 @@ + } + static void unpack4(char *buf, int sz, struct sockaddr_in *from) + { +- struct icmp *icmppkt; + struct iphdr *iphdr; ++ struct icmp *icmppkt; + int hlen; + + /* discard if too short */ + if (sz < (datalen + ICMP_MINLEN)) + return; ++ if(!using_dgram) { ++ /* check IP header */ ++ iphdr = (struct iphdr *) buf; ++ hlen = iphdr->ihl << 2; ++ sz -= hlen; ++ icmppkt = (struct icmp *) (buf + hlen); ++ } else icmppkt = (struct icmp *) buf; + +- /* check IP header */ +- iphdr = (struct iphdr *) buf; +- hlen = iphdr->ihl << 2; +- sz -= hlen; +- icmppkt = (struct icmp *) (buf + hlen); + if (icmppkt->icmp_id != myid) + return; /* not our ping */ + +@@ -652,7 +658,7 @@ + tp = (uint32_t *) icmppkt->icmp_data; + unpack_tail(sz, tp, + inet_ntoa(*(struct in_addr *) &from->sin_addr.s_addr), +- recv_seq, iphdr->ttl); ++ recv_seq, using_dgram ? 42 : iphdr->ttl); + } else if (icmppkt->icmp_type != ICMP_ECHO) { + bb_error_msg("warning: got ICMP %d (%s)", + icmppkt->icmp_type, +@@ -696,11 +702,31 @@ + int sockopt; + + pingaddr.sin = lsa->u.sin; +- if (source_lsa) { ++ if (source_lsa && !using_dgram) { + if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF, + &source_lsa->u.sa, source_lsa->len)) + bb_error_msg_and_die("can't set multicast source interface"); + xbind(pingsock, &source_lsa->u.sa, source_lsa->len); ++ } else if(using_dgram) { ++ struct sockaddr_in sa; ++ socklen_t sl; ++ ++ sa.sin_family = AF_INET; ++ sa.sin_port = 0; ++ sa.sin_addr.s_addr = source_lsa ? ++ source_lsa->u.sin.sin_addr.s_addr : 0; ++ sl = sizeof(sa); ++ ++ if (bind(pingsock, (struct sockaddr *) &sa, sl) == -1) { ++ perror("bind"); ++ exit(2); ++ } ++ ++ if (getsockname(pingsock, (struct sockaddr *) &sa, &sl) == -1) { ++ perror("getsockname"); ++ exit(2); ++ } ++ myid = sa.sin_port; + } + + /* enable broadcast pings */ +@@ -717,6 +743,15 @@ + setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_TTL, &opt_ttl, sizeof(opt_ttl)); + } + ++ if(using_dgram) { ++ int hold = 65536; ++ if (setsockopt(pingsock, SOL_IP, IP_RECVTTL, (char *)&hold, sizeof(hold))) ++ perror("WARNING: setsockopt(IP_RECVTTL)"); ++ if (setsockopt(pingsock, SOL_IP, IP_RETOPTS, (char *)&hold, sizeof(hold))) ++ perror("WARNING: setsockopt(IP_RETOPTS)"); ++ ++ } ++ + signal(SIGINT, print_stats_and_exit); + + /* start the ping's going ... */ +@@ -751,10 +786,33 @@ + char control_buf[CMSG_SPACE(36)]; + + pingaddr.sin6 = lsa->u.sin6; +- if (source_lsa) ++ if (source_lsa && !using_dgram) + xbind(pingsock, &source_lsa->u.sa, source_lsa->len); ++ else if(using_dgram) { ++ struct sockaddr_in6 sa = {0}; ++ socklen_t sl; ++ ++ sa.sin6_family = AF_INET6; ++ sa.sin6_port = 0; ++ if(source_lsa) { ++ memcpy(&sa.sin6_addr, &source_lsa->u.sin6.sin6_addr, sizeof(struct in6_addr)); ++ } ++ sl = sizeof(sa); ++ ++ if (bind(pingsock, (struct sockaddr *) &sa, sl) == -1) { ++ perror("bind"); ++ exit(2); ++ } ++ ++ if (getsockname(pingsock, (struct sockaddr *) &sa, &sl) == -1) { ++ perror("getsockname"); ++ exit(2); ++ } ++ myid = sa.sin6_port; ++ } + + #ifdef ICMP6_FILTER ++ if(!using_dgram) + { + struct icmp6_filter filt; + if (!(option_mask32 & OPT_VERBOSE)) { +@@ -880,7 +938,7 @@ + str_I = NULL; /* don't try to bind to device later */ + } + } +- myid = (uint16_t) getpid(); ++ if(!using_dgram) myid = (uint16_t) getpid(); + hostname = argv[optind]; + #if ENABLE_PING6 + { +diff -Nur busybox-1.22.1.orig/networking/ping.c.orig busybox-1.22.1/networking/ping.c.orig +--- busybox-1.22.1.orig/networking/ping.c.orig 1970-01-01 01:00:00.000000000 +0100 ++++ busybox-1.22.1/networking/ping.c.orig 2014-01-20 03:38:10.000000000 +0100 +@@ -0,0 +1,966 @@ ++/* vi: set sw=4 ts=4: */ ++/* ++ * Mini ping implementation for busybox ++ * ++ * Copyright (C) 1999 by Randolph Chung ++ * ++ * Adapted from the ping in netkit-base 0.10: ++ * Copyright (c) 1989 The Regents of the University of California. ++ * All rights reserved. ++ * ++ * This code is derived from software contributed to Berkeley by ++ * Mike Muuss. ++ * ++ * Licensed under GPLv2 or later, see file LICENSE in this source tree. ++ */ ++/* from ping6.c: ++ * Copyright (C) 1999 by Randolph Chung ++ * ++ * This version of ping is adapted from the ping in netkit-base 0.10, ++ * which is: ++ * ++ * Original copyright notice is retained at the end of this file. ++ * ++ * This version is an adaptation of ping.c from busybox. ++ * The code was modified by Bart Visscher ++ */ ++ ++#include ++#include ++#include "libbb.h" ++ ++#ifdef __BIONIC__ ++/* should be in netinet/ip_icmp.h */ ++# define ICMP_DEST_UNREACH 3 /* Destination Unreachable */ ++# define ICMP_SOURCE_QUENCH 4 /* Source Quench */ ++# define ICMP_REDIRECT 5 /* Redirect (change route) */ ++# define ICMP_ECHO 8 /* Echo Request */ ++# define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */ ++# define ICMP_PARAMETERPROB 12 /* Parameter Problem */ ++# define ICMP_TIMESTAMP 13 /* Timestamp Request */ ++# define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */ ++# define ICMP_INFO_REQUEST 15 /* Information Request */ ++# define ICMP_INFO_REPLY 16 /* Information Reply */ ++# define ICMP_ADDRESS 17 /* Address Mask Request */ ++# define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */ ++#endif ++ ++//config:config PING ++//config: bool "ping" ++//config: default y ++//config: select PLATFORM_LINUX ++//config: help ++//config: ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to ++//config: elicit an ICMP ECHO_RESPONSE from a host or gateway. ++//config: ++//config:config PING6 ++//config: bool "ping6" ++//config: default y ++//config: depends on FEATURE_IPV6 && PING ++//config: help ++//config: This will give you a ping that can talk IPv6. ++//config: ++//config:config FEATURE_FANCY_PING ++//config: bool "Enable fancy ping output" ++//config: default y ++//config: depends on PING ++//config: help ++//config: Make the output from the ping applet include statistics, and at the ++//config: same time provide full support for ICMP packets. ++ ++/* Needs socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), therefore BB_SUID_MAYBE: */ ++//applet:IF_PING(APPLET(ping, BB_DIR_BIN, BB_SUID_MAYBE)) ++//applet:IF_PING6(APPLET(ping6, BB_DIR_BIN, BB_SUID_MAYBE)) ++ ++//kbuild:lib-$(CONFIG_PING) += ping.o ++//kbuild:lib-$(CONFIG_PING6) += ping.o ++ ++//usage:#if !ENABLE_FEATURE_FANCY_PING ++//usage:# define ping_trivial_usage ++//usage: "HOST" ++//usage:# define ping_full_usage "\n\n" ++//usage: "Send ICMP ECHO_REQUEST packets to network hosts" ++//usage:# define ping6_trivial_usage ++//usage: "HOST" ++//usage:# define ping6_full_usage "\n\n" ++//usage: "Send ICMP ECHO_REQUEST packets to network hosts" ++//usage:#else ++//usage:# define ping_trivial_usage ++//usage: "[OPTIONS] HOST" ++//usage:# define ping_full_usage "\n\n" ++//usage: "Send ICMP ECHO_REQUEST packets to network hosts\n" ++//usage: IF_PING6( ++//usage: "\n -4,-6 Force IP or IPv6 name resolution" ++//usage: ) ++//usage: "\n -c CNT Send only CNT pings" ++//usage: "\n -s SIZE Send SIZE data bytes in packets (default:56)" ++//usage: "\n -t TTL Set TTL" ++//usage: "\n -I IFACE/IP Use interface or IP address as source" ++//usage: "\n -W SEC Seconds to wait for the first response (default:10)" ++//usage: "\n (after all -c CNT packets are sent)" ++//usage: "\n -w SEC Seconds until ping exits (default:infinite)" ++//usage: "\n (can exit earlier with -c CNT)" ++//usage: "\n -q Quiet, only displays output at start" ++//usage: "\n and when finished" ++//usage: ++//usage:# define ping6_trivial_usage ++//usage: "[OPTIONS] HOST" ++//usage:# define ping6_full_usage "\n\n" ++//usage: "Send ICMP ECHO_REQUEST packets to network hosts\n" ++//usage: "\n -c CNT Send only CNT pings" ++//usage: "\n -s SIZE Send SIZE data bytes in packets (default:56)" ++//usage: "\n -I IFACE/IP Use interface or IP address as source" ++//usage: "\n -q Quiet, only displays output at start" ++//usage: "\n and when finished" ++//usage: ++//usage:#endif ++//usage: ++//usage:#define ping_example_usage ++//usage: "$ ping localhost\n" ++//usage: "PING slag (127.0.0.1): 56 data bytes\n" ++//usage: "64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=20.1 ms\n" ++//usage: "\n" ++//usage: "--- debian ping statistics ---\n" ++//usage: "1 packets transmitted, 1 packets received, 0% packet loss\n" ++//usage: "round-trip min/avg/max = 20.1/20.1/20.1 ms\n" ++//usage:#define ping6_example_usage ++//usage: "$ ping6 ip6-localhost\n" ++//usage: "PING ip6-localhost (::1): 56 data bytes\n" ++//usage: "64 bytes from ::1: icmp6_seq=0 ttl=64 time=20.1 ms\n" ++//usage: "\n" ++//usage: "--- ip6-localhost ping statistics ---\n" ++//usage: "1 packets transmitted, 1 packets received, 0% packet loss\n" ++//usage: "round-trip min/avg/max = 20.1/20.1/20.1 ms\n" ++ ++#if ENABLE_PING6 ++# include ++/* I see RENUMBERED constants in bits/in.h - !!? ++ * What a fuck is going on with libc? Is it a glibc joke? */ ++# ifdef IPV6_2292HOPLIMIT ++# undef IPV6_HOPLIMIT ++# define IPV6_HOPLIMIT IPV6_2292HOPLIMIT ++# endif ++#endif ++ ++enum { ++ DEFDATALEN = 56, ++ MAXIPLEN = 60, ++ MAXICMPLEN = 76, ++ MAX_DUP_CHK = (8 * 128), ++ MAXWAIT = 10, ++ PINGINTERVAL = 1, /* 1 second */ ++ pingsock = 0, ++}; ++ ++static void ++#if ENABLE_PING6 ++create_icmp_socket(len_and_sockaddr *lsa) ++#else ++create_icmp_socket(void) ++#define create_icmp_socket(lsa) create_icmp_socket() ++#endif ++{ ++ int sock; ++#if ENABLE_PING6 ++ if (lsa->u.sa.sa_family == AF_INET6) ++ sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); ++ else ++#endif ++ sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */ ++ if (sock < 0) { ++ if (errno != EPERM) ++ bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); ++#if defined(__linux__) || defined(__APPLE__) ++ /* We don't have root privileges. Try SOCK_DGRAM instead. ++ * Linux needs net.ipv4.ping_group_range for this to work. ++ * MacOSX allows ICMP_ECHO, ICMP_TSTAMP or ICMP_MASKREQ ++ */ ++#if ENABLE_PING6 ++ if (lsa->u.sa.sa_family == AF_INET6) ++ sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6); ++ else ++#endif ++ sock = socket(AF_INET, SOCK_DGRAM, 1); /* 1 == ICMP */ ++ if (sock < 0) ++#endif ++ bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); ++ } ++ ++ xmove_fd(sock, pingsock); ++} ++ ++#if !ENABLE_FEATURE_FANCY_PING ++ ++/* Simple version */ ++ ++struct globals { ++ char *hostname; ++ char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN]; ++} FIX_ALIASING; ++#define G (*(struct globals*)&bb_common_bufsiz1) ++#define INIT_G() do { } while (0) ++ ++static void noresp(int ign UNUSED_PARAM) ++{ ++ printf("No response from %s\n", G.hostname); ++ exit(EXIT_FAILURE); ++} ++ ++static void ping4(len_and_sockaddr *lsa) ++{ ++ struct icmp *pkt; ++ int c; ++ ++ pkt = (struct icmp *) G.packet; ++ /*memset(pkt, 0, sizeof(G.packet)); already is */ ++ pkt->icmp_type = ICMP_ECHO; ++ pkt->icmp_cksum = inet_cksum((uint16_t *) pkt, sizeof(G.packet)); ++ ++ xsendto(pingsock, G.packet, DEFDATALEN + ICMP_MINLEN, &lsa->u.sa, lsa->len); ++ ++ /* listen for replies */ ++ while (1) { ++#if 0 ++ struct sockaddr_in from; ++ socklen_t fromlen = sizeof(from); ++ ++ c = recvfrom(pingsock, G.packet, sizeof(G.packet), 0, ++ (struct sockaddr *) &from, &fromlen); ++#else ++ c = recv(pingsock, G.packet, sizeof(G.packet), 0); ++#endif ++ if (c < 0) { ++ if (errno != EINTR) ++ bb_perror_msg("recvfrom"); ++ continue; ++ } ++ if (c >= 76) { /* ip + icmp */ ++ struct iphdr *iphdr = (struct iphdr *) G.packet; ++ ++ pkt = (struct icmp *) (G.packet + (iphdr->ihl << 2)); /* skip ip hdr */ ++ if (pkt->icmp_type == ICMP_ECHOREPLY) ++ break; ++ } ++ } ++ if (ENABLE_FEATURE_CLEAN_UP) ++ close(pingsock); ++} ++ ++#if ENABLE_PING6 ++static void ping6(len_and_sockaddr *lsa) ++{ ++ struct icmp6_hdr *pkt; ++ int c; ++ int sockopt; ++ ++ pkt = (struct icmp6_hdr *) G.packet; ++ /*memset(pkt, 0, sizeof(G.packet)); already is */ ++ pkt->icmp6_type = ICMP6_ECHO_REQUEST; ++ ++ sockopt = offsetof(struct icmp6_hdr, icmp6_cksum); ++ setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt)); ++ ++ xsendto(pingsock, G.packet, DEFDATALEN + sizeof(struct icmp6_hdr), &lsa->u.sa, lsa->len); ++ ++ /* listen for replies */ ++ while (1) { ++#if 0 ++ struct sockaddr_in6 from; ++ socklen_t fromlen = sizeof(from); ++ ++ c = recvfrom(pingsock, G.packet, sizeof(G.packet), 0, ++ (struct sockaddr *) &from, &fromlen); ++#else ++ c = recv(pingsock, G.packet, sizeof(G.packet), 0); ++#endif ++ if (c < 0) { ++ if (errno != EINTR) ++ bb_perror_msg("recvfrom"); ++ continue; ++ } ++ if (c >= ICMP_MINLEN) { /* icmp6_hdr */ ++ if (pkt->icmp6_type == ICMP6_ECHO_REPLY) ++ break; ++ } ++ } ++ if (ENABLE_FEATURE_CLEAN_UP) ++ close(pingsock); ++} ++#endif ++ ++#if !ENABLE_PING6 ++# define common_ping_main(af, argv) common_ping_main(argv) ++#endif ++static int common_ping_main(sa_family_t af, char **argv) ++{ ++ len_and_sockaddr *lsa; ++ ++ INIT_G(); ++ ++#if ENABLE_PING6 ++ while ((++argv)[0] && argv[0][0] == '-') { ++ if (argv[0][1] == '4') { ++ af = AF_INET; ++ continue; ++ } ++ if (argv[0][1] == '6') { ++ af = AF_INET6; ++ continue; ++ } ++ bb_show_usage(); ++ } ++#else ++ argv++; ++#endif ++ ++ G.hostname = *argv; ++ if (!G.hostname) ++ bb_show_usage(); ++ ++#if ENABLE_PING6 ++ lsa = xhost_and_af2sockaddr(G.hostname, 0, af); ++#else ++ lsa = xhost_and_af2sockaddr(G.hostname, 0, AF_INET); ++#endif ++ /* Set timer _after_ DNS resolution */ ++ signal(SIGALRM, noresp); ++ alarm(5); /* give the host 5000ms to respond */ ++ ++ create_icmp_socket(lsa); ++#if ENABLE_PING6 ++ if (lsa->u.sa.sa_family == AF_INET6) ++ ping6(lsa); ++ else ++#endif ++ ping4(lsa); ++ printf("%s is alive!\n", G.hostname); ++ return EXIT_SUCCESS; ++} ++ ++ ++#else /* FEATURE_FANCY_PING */ ++ ++ ++/* Full(er) version */ ++ ++#define OPT_STRING ("qvc:s:t:w:W:I:n4" IF_PING6("6")) ++enum { ++ OPT_QUIET = 1 << 0, ++ OPT_VERBOSE = 1 << 1, ++ OPT_c = 1 << 2, ++ OPT_s = 1 << 3, ++ OPT_t = 1 << 4, ++ OPT_w = 1 << 5, ++ OPT_W = 1 << 6, ++ OPT_I = 1 << 7, ++ /*OPT_n = 1 << 8, - ignored */ ++ OPT_IPV4 = 1 << 9, ++ OPT_IPV6 = (1 << 10) * ENABLE_PING6, ++}; ++ ++ ++struct globals { ++ int if_index; ++ char *str_I; ++ len_and_sockaddr *source_lsa; ++ unsigned datalen; ++ unsigned pingcount; /* must be int-sized */ ++ unsigned opt_ttl; ++ unsigned long ntransmitted, nreceived, nrepeats; ++ uint16_t myid; ++ unsigned tmin, tmax; /* in us */ ++ unsigned long long tsum; /* in us, sum of all times */ ++ unsigned deadline; ++ unsigned timeout; ++ unsigned total_secs; ++ unsigned sizeof_rcv_packet; ++ char *rcv_packet; /* [datalen + MAXIPLEN + MAXICMPLEN] */ ++ void *snd_packet; /* [datalen + ipv4/ipv6_const] */ ++ const char *hostname; ++ const char *dotted; ++ union { ++ struct sockaddr sa; ++ struct sockaddr_in sin; ++#if ENABLE_PING6 ++ struct sockaddr_in6 sin6; ++#endif ++ } pingaddr; ++ unsigned char rcvd_tbl[MAX_DUP_CHK / 8]; ++} FIX_ALIASING; ++#define G (*(struct globals*)&bb_common_bufsiz1) ++#define if_index (G.if_index ) ++#define source_lsa (G.source_lsa ) ++#define str_I (G.str_I ) ++#define datalen (G.datalen ) ++#define pingcount (G.pingcount ) ++#define opt_ttl (G.opt_ttl ) ++#define myid (G.myid ) ++#define tmin (G.tmin ) ++#define tmax (G.tmax ) ++#define tsum (G.tsum ) ++#define deadline (G.deadline ) ++#define timeout (G.timeout ) ++#define total_secs (G.total_secs ) ++#define hostname (G.hostname ) ++#define dotted (G.dotted ) ++#define pingaddr (G.pingaddr ) ++#define rcvd_tbl (G.rcvd_tbl ) ++void BUG_ping_globals_too_big(void); ++#define INIT_G() do { \ ++ if (sizeof(G) > COMMON_BUFSIZE) \ ++ BUG_ping_globals_too_big(); \ ++ datalen = DEFDATALEN; \ ++ timeout = MAXWAIT; \ ++ tmin = UINT_MAX; \ ++} while (0) ++ ++ ++#define BYTE(bit) rcvd_tbl[(bit)>>3] ++#define MASK(bit) (1 << ((bit) & 7)) ++#define SET(bit) (BYTE(bit) |= MASK(bit)) ++#define CLR(bit) (BYTE(bit) &= (~MASK(bit))) ++#define TST(bit) (BYTE(bit) & MASK(bit)) ++ ++static void print_stats_and_exit(int junk) NORETURN; ++static void print_stats_and_exit(int junk UNUSED_PARAM) ++{ ++ unsigned long ul; ++ unsigned long nrecv; ++ ++ signal(SIGINT, SIG_IGN); ++ ++ nrecv = G.nreceived; ++ printf("\n--- %s ping statistics ---\n" ++ "%lu packets transmitted, " ++ "%lu packets received, ", ++ hostname, G.ntransmitted, nrecv ++ ); ++ if (G.nrepeats) ++ printf("%lu duplicates, ", G.nrepeats); ++ ul = G.ntransmitted; ++ if (ul != 0) ++ ul = (ul - nrecv) * 100 / ul; ++ printf("%lu%% packet loss\n", ul); ++ if (tmin != UINT_MAX) { ++ unsigned tavg = tsum / (nrecv + G.nrepeats); ++ printf("round-trip min/avg/max = %u.%03u/%u.%03u/%u.%03u ms\n", ++ tmin / 1000, tmin % 1000, ++ tavg / 1000, tavg % 1000, ++ tmax / 1000, tmax % 1000); ++ } ++ /* if condition is true, exit with 1 -- 'failure' */ ++ exit(nrecv == 0 || (deadline && nrecv < pingcount)); ++} ++ ++static void sendping_tail(void (*sp)(int), int size_pkt) ++{ ++ int sz; ++ ++ CLR((uint16_t)G.ntransmitted % MAX_DUP_CHK); ++ G.ntransmitted++; ++ ++ size_pkt += datalen; ++ ++ /* sizeof(pingaddr) can be larger than real sa size, but I think ++ * it doesn't matter */ ++ sz = xsendto(pingsock, G.snd_packet, size_pkt, &pingaddr.sa, sizeof(pingaddr)); ++ if (sz != size_pkt) ++ bb_error_msg_and_die(bb_msg_write_error); ++ ++ if (pingcount == 0 || deadline || G.ntransmitted < pingcount) { ++ /* Didn't send all pings yet - schedule next in 1s */ ++ signal(SIGALRM, sp); ++ if (deadline) { ++ total_secs += PINGINTERVAL; ++ if (total_secs >= deadline) ++ signal(SIGALRM, print_stats_and_exit); ++ } ++ alarm(PINGINTERVAL); ++ } else { /* -c NN, and all NN are sent (and no deadline) */ ++ /* Wait for the last ping to come back. ++ * -W timeout: wait for a response in seconds. ++ * Affects only timeout in absense of any responses, ++ * otherwise ping waits for two RTTs. */ ++ unsigned expire = timeout; ++ ++ if (G.nreceived) { ++ /* approx. 2*tmax, in seconds (2 RTT) */ ++ expire = tmax / (512*1024); ++ if (expire == 0) ++ expire = 1; ++ } ++ signal(SIGALRM, print_stats_and_exit); ++ alarm(expire); ++ } ++} ++ ++static void sendping4(int junk UNUSED_PARAM) ++{ ++ struct icmp *pkt = G.snd_packet; ++ ++ //memset(pkt, 0, datalen + ICMP_MINLEN + 4); - G.snd_packet was xzalloced ++ pkt->icmp_type = ICMP_ECHO; ++ /*pkt->icmp_code = 0;*/ ++ pkt->icmp_cksum = 0; /* cksum is calculated with this field set to 0 */ ++ pkt->icmp_seq = htons(G.ntransmitted); /* don't ++ here, it can be a macro */ ++ pkt->icmp_id = myid; ++ ++ /* If datalen < 4, we store timestamp _past_ the packet, ++ * but it's ok - we allocated 4 extra bytes in xzalloc() just in case. ++ */ ++ /*if (datalen >= 4)*/ ++ /* No hton: we'll read it back on the same machine */ ++ *(uint32_t*)&pkt->icmp_dun = monotonic_us(); ++ ++ pkt->icmp_cksum = inet_cksum((uint16_t *) pkt, datalen + ICMP_MINLEN); ++ ++ sendping_tail(sendping4, ICMP_MINLEN); ++} ++#if ENABLE_PING6 ++static void sendping6(int junk UNUSED_PARAM) ++{ ++ struct icmp6_hdr *pkt = G.snd_packet; ++ ++ //memset(pkt, 0, datalen + sizeof(struct icmp6_hdr) + 4); ++ pkt->icmp6_type = ICMP6_ECHO_REQUEST; ++ /*pkt->icmp6_code = 0;*/ ++ /*pkt->icmp6_cksum = 0;*/ ++ pkt->icmp6_seq = htons(G.ntransmitted); /* don't ++ here, it can be a macro */ ++ pkt->icmp6_id = myid; ++ ++ /*if (datalen >= 4)*/ ++ *(bb__aliased_uint32_t*)(&pkt->icmp6_data8[4]) = monotonic_us(); ++ ++ //TODO? pkt->icmp_cksum = inet_cksum(...); ++ ++ sendping_tail(sendping6, sizeof(struct icmp6_hdr)); ++} ++#endif ++ ++static const char *icmp_type_name(int id) ++{ ++ switch (id) { ++ case ICMP_ECHOREPLY: return "Echo Reply"; ++ case ICMP_DEST_UNREACH: return "Destination Unreachable"; ++ case ICMP_SOURCE_QUENCH: return "Source Quench"; ++ case ICMP_REDIRECT: return "Redirect (change route)"; ++ case ICMP_ECHO: return "Echo Request"; ++ case ICMP_TIME_EXCEEDED: return "Time Exceeded"; ++ case ICMP_PARAMETERPROB: return "Parameter Problem"; ++ case ICMP_TIMESTAMP: return "Timestamp Request"; ++ case ICMP_TIMESTAMPREPLY: return "Timestamp Reply"; ++ case ICMP_INFO_REQUEST: return "Information Request"; ++ case ICMP_INFO_REPLY: return "Information Reply"; ++ case ICMP_ADDRESS: return "Address Mask Request"; ++ case ICMP_ADDRESSREPLY: return "Address Mask Reply"; ++ default: return "unknown ICMP type"; ++ } ++} ++#if ENABLE_PING6 ++/* RFC3542 changed some definitions from RFC2292 for no good reason, whee! ++ * the newer 3542 uses a MLD_ prefix where as 2292 uses ICMP6_ prefix */ ++#ifndef MLD_LISTENER_QUERY ++# define MLD_LISTENER_QUERY ICMP6_MEMBERSHIP_QUERY ++#endif ++#ifndef MLD_LISTENER_REPORT ++# define MLD_LISTENER_REPORT ICMP6_MEMBERSHIP_REPORT ++#endif ++#ifndef MLD_LISTENER_REDUCTION ++# define MLD_LISTENER_REDUCTION ICMP6_MEMBERSHIP_REDUCTION ++#endif ++static const char *icmp6_type_name(int id) ++{ ++ switch (id) { ++ case ICMP6_DST_UNREACH: return "Destination Unreachable"; ++ case ICMP6_PACKET_TOO_BIG: return "Packet too big"; ++ case ICMP6_TIME_EXCEEDED: return "Time Exceeded"; ++ case ICMP6_PARAM_PROB: return "Parameter Problem"; ++ case ICMP6_ECHO_REPLY: return "Echo Reply"; ++ case ICMP6_ECHO_REQUEST: return "Echo Request"; ++ case MLD_LISTENER_QUERY: return "Listener Query"; ++ case MLD_LISTENER_REPORT: return "Listener Report"; ++ case MLD_LISTENER_REDUCTION: return "Listener Reduction"; ++ default: return "unknown ICMP type"; ++ } ++} ++#endif ++ ++static void unpack_tail(int sz, uint32_t *tp, ++ const char *from_str, ++ uint16_t recv_seq, int ttl) ++{ ++ unsigned char *b, m; ++ const char *dupmsg = " (DUP!)"; ++ unsigned triptime = triptime; /* for gcc */ ++ ++ if (tp) { ++ /* (int32_t) cast is for hypothetical 64-bit unsigned */ ++ /* (doesn't hurt 32-bit real-world anyway) */ ++ triptime = (int32_t) ((uint32_t)monotonic_us() - *tp); ++ tsum += triptime; ++ if (triptime < tmin) ++ tmin = triptime; ++ if (triptime > tmax) ++ tmax = triptime; ++ } ++ ++ b = &BYTE(recv_seq % MAX_DUP_CHK); ++ m = MASK(recv_seq % MAX_DUP_CHK); ++ /*if TST(recv_seq % MAX_DUP_CHK):*/ ++ if (*b & m) { ++ ++G.nrepeats; ++ } else { ++ /*SET(recv_seq % MAX_DUP_CHK):*/ ++ *b |= m; ++ ++G.nreceived; ++ dupmsg += 7; ++ } ++ ++ if (option_mask32 & OPT_QUIET) ++ return; ++ ++ printf("%d bytes from %s: seq=%u ttl=%d", sz, ++ from_str, recv_seq, ttl); ++ if (tp) ++ printf(" time=%u.%03u ms", triptime / 1000, triptime % 1000); ++ puts(dupmsg); ++ fflush_all(); ++} ++static void unpack4(char *buf, int sz, struct sockaddr_in *from) ++{ ++ struct icmp *icmppkt; ++ struct iphdr *iphdr; ++ int hlen; ++ ++ /* discard if too short */ ++ if (sz < (datalen + ICMP_MINLEN)) ++ return; ++ ++ /* check IP header */ ++ iphdr = (struct iphdr *) buf; ++ hlen = iphdr->ihl << 2; ++ sz -= hlen; ++ icmppkt = (struct icmp *) (buf + hlen); ++ if (icmppkt->icmp_id != myid) ++ return; /* not our ping */ ++ ++ if (icmppkt->icmp_type == ICMP_ECHOREPLY) { ++ uint16_t recv_seq = ntohs(icmppkt->icmp_seq); ++ uint32_t *tp = NULL; ++ ++ if (sz >= ICMP_MINLEN + sizeof(uint32_t)) ++ tp = (uint32_t *) icmppkt->icmp_data; ++ unpack_tail(sz, tp, ++ inet_ntoa(*(struct in_addr *) &from->sin_addr.s_addr), ++ recv_seq, iphdr->ttl); ++ } else if (icmppkt->icmp_type != ICMP_ECHO) { ++ bb_error_msg("warning: got ICMP %d (%s)", ++ icmppkt->icmp_type, ++ icmp_type_name(icmppkt->icmp_type)); ++ } ++} ++#if ENABLE_PING6 ++static void unpack6(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit) ++{ ++ struct icmp6_hdr *icmppkt; ++ char buf[INET6_ADDRSTRLEN]; ++ ++ /* discard if too short */ ++ if (sz < (datalen + sizeof(struct icmp6_hdr))) ++ return; ++ ++ icmppkt = (struct icmp6_hdr *) packet; ++ if (icmppkt->icmp6_id != myid) ++ return; /* not our ping */ ++ ++ if (icmppkt->icmp6_type == ICMP6_ECHO_REPLY) { ++ uint16_t recv_seq = ntohs(icmppkt->icmp6_seq); ++ uint32_t *tp = NULL; ++ ++ if (sz >= sizeof(struct icmp6_hdr) + sizeof(uint32_t)) ++ tp = (uint32_t *) &icmppkt->icmp6_data8[4]; ++ unpack_tail(sz, tp, ++ inet_ntop(AF_INET6, &from->sin6_addr, ++ buf, sizeof(buf)), ++ recv_seq, hoplimit); ++ } else if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST) { ++ bb_error_msg("warning: got ICMP %d (%s)", ++ icmppkt->icmp6_type, ++ icmp6_type_name(icmppkt->icmp6_type)); ++ } ++} ++#endif ++ ++static void ping4(len_and_sockaddr *lsa) ++{ ++ int sockopt; ++ ++ pingaddr.sin = lsa->u.sin; ++ if (source_lsa) { ++ if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF, ++ &source_lsa->u.sa, source_lsa->len)) ++ bb_error_msg_and_die("can't set multicast source interface"); ++ xbind(pingsock, &source_lsa->u.sa, source_lsa->len); ++ } ++ ++ /* enable broadcast pings */ ++ setsockopt_broadcast(pingsock); ++ ++ /* set recv buf (needed if we can get lots of responses: flood ping, ++ * broadcast ping etc) */ ++ sockopt = (datalen * 2) + 7 * 1024; /* giving it a bit of extra room */ ++ setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt)); ++ ++ if (opt_ttl != 0) { ++ setsockopt(pingsock, IPPROTO_IP, IP_TTL, &opt_ttl, sizeof(opt_ttl)); ++ /* above doesnt affect packets sent to bcast IP, so... */ ++ setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_TTL, &opt_ttl, sizeof(opt_ttl)); ++ } ++ ++ signal(SIGINT, print_stats_and_exit); ++ ++ /* start the ping's going ... */ ++ sendping4(0); ++ ++ /* listen for replies */ ++ while (1) { ++ struct sockaddr_in from; ++ socklen_t fromlen = (socklen_t) sizeof(from); ++ int c; ++ ++ c = recvfrom(pingsock, G.rcv_packet, G.sizeof_rcv_packet, 0, ++ (struct sockaddr *) &from, &fromlen); ++ if (c < 0) { ++ if (errno != EINTR) ++ bb_perror_msg("recvfrom"); ++ continue; ++ } ++ unpack4(G.rcv_packet, c, &from); ++ if (pingcount && G.nreceived >= pingcount) ++ break; ++ } ++} ++#if ENABLE_PING6 ++extern int BUG_bad_offsetof_icmp6_cksum(void); ++static void ping6(len_and_sockaddr *lsa) ++{ ++ int sockopt; ++ struct msghdr msg; ++ struct sockaddr_in6 from; ++ struct iovec iov; ++ char control_buf[CMSG_SPACE(36)]; ++ ++ pingaddr.sin6 = lsa->u.sin6; ++ if (source_lsa) ++ xbind(pingsock, &source_lsa->u.sa, source_lsa->len); ++ ++#ifdef ICMP6_FILTER ++ { ++ struct icmp6_filter filt; ++ if (!(option_mask32 & OPT_VERBOSE)) { ++ ICMP6_FILTER_SETBLOCKALL(&filt); ++ ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt); ++ } else { ++ ICMP6_FILTER_SETPASSALL(&filt); ++ } ++ if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt, ++ sizeof(filt)) < 0) ++ bb_error_msg_and_die("setsockopt(ICMP6_FILTER)"); ++ } ++#endif /*ICMP6_FILTER*/ ++ ++ /* enable broadcast pings */ ++ setsockopt_broadcast(pingsock); ++ ++ /* set recv buf (needed if we can get lots of responses: flood ping, ++ * broadcast ping etc) */ ++ sockopt = (datalen * 2) + 7 * 1024; /* giving it a bit of extra room */ ++ setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt)); ++ ++ sockopt = offsetof(struct icmp6_hdr, icmp6_cksum); ++ if (offsetof(struct icmp6_hdr, icmp6_cksum) != 2) ++ BUG_bad_offsetof_icmp6_cksum(); ++ setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt)); ++ ++ /* request ttl info to be returned in ancillary data */ ++ setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, &const_int_1, sizeof(const_int_1)); ++ ++ if (if_index) ++ pingaddr.sin6.sin6_scope_id = if_index; ++ ++ signal(SIGINT, print_stats_and_exit); ++ ++ /* start the ping's going ... */ ++ sendping6(0); ++ ++ /* listen for replies */ ++ msg.msg_name = &from; ++ msg.msg_namelen = sizeof(from); ++ msg.msg_iov = &iov; ++ msg.msg_iovlen = 1; ++ msg.msg_control = control_buf; ++ iov.iov_base = G.rcv_packet; ++ iov.iov_len = G.sizeof_rcv_packet; ++ while (1) { ++ int c; ++ struct cmsghdr *mp; ++ int hoplimit = -1; ++ msg.msg_controllen = sizeof(control_buf); ++ ++ c = recvmsg(pingsock, &msg, 0); ++ if (c < 0) { ++ if (errno != EINTR) ++ bb_perror_msg("recvfrom"); ++ continue; ++ } ++ for (mp = CMSG_FIRSTHDR(&msg); mp; mp = CMSG_NXTHDR(&msg, mp)) { ++ if (mp->cmsg_level == SOL_IPV6 ++ && mp->cmsg_type == IPV6_HOPLIMIT ++ /* don't check len - we trust the kernel: */ ++ /* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */ ++ ) { ++ /*hoplimit = *(int*)CMSG_DATA(mp); - unaligned access */ ++ move_from_unaligned_int(hoplimit, CMSG_DATA(mp)); ++ } ++ } ++ unpack6(G.rcv_packet, c, &from, hoplimit); ++ if (pingcount && G.nreceived >= pingcount) ++ break; ++ } ++} ++#endif ++ ++static void ping(len_and_sockaddr *lsa) ++{ ++ printf("PING %s (%s)", hostname, dotted); ++ if (source_lsa) { ++ printf(" from %s", ++ xmalloc_sockaddr2dotted_noport(&source_lsa->u.sa)); ++ } ++ printf(": %d data bytes\n", datalen); ++ ++ create_icmp_socket(lsa); ++ /* untested whether "-I addr" really works for IPv6: */ ++ if (str_I) ++ setsockopt_bindtodevice(pingsock, str_I); ++ ++ G.sizeof_rcv_packet = datalen + MAXIPLEN + MAXICMPLEN; ++ G.rcv_packet = xzalloc(G.sizeof_rcv_packet); ++#if ENABLE_PING6 ++ if (lsa->u.sa.sa_family == AF_INET6) { ++ /* +4 reserves a place for timestamp, which may end up sitting ++ * _after_ packet. Saves one if() - see sendping4/6() */ ++ G.snd_packet = xzalloc(datalen + sizeof(struct icmp6_hdr) + 4); ++ ping6(lsa); ++ } else ++#endif ++ { ++ G.snd_packet = xzalloc(datalen + ICMP_MINLEN + 4); ++ ping4(lsa); ++ } ++} ++ ++static int common_ping_main(int opt, char **argv) ++{ ++ len_and_sockaddr *lsa; ++ char *str_s; ++ ++ INIT_G(); ++ ++ /* exactly one argument needed; -v and -q don't mix; -c NUM, -t NUM, -w NUM, -W NUM */ ++ opt_complementary = "=1:q--v:v--q:c+:t+:w+:W+"; ++ opt |= getopt32(argv, OPT_STRING, &pingcount, &str_s, &opt_ttl, &deadline, &timeout, &str_I); ++ if (opt & OPT_s) ++ datalen = xatou16(str_s); // -s ++ if (opt & OPT_I) { // -I ++ if_index = if_nametoindex(str_I); ++ if (!if_index) { ++ /* TODO: I'm not sure it takes IPv6 unless in [XX:XX..] format */ ++ source_lsa = xdotted2sockaddr(str_I, 0); ++ str_I = NULL; /* don't try to bind to device later */ ++ } ++ } ++ myid = (uint16_t) getpid(); ++ hostname = argv[optind]; ++#if ENABLE_PING6 ++ { ++ sa_family_t af = AF_UNSPEC; ++ if (opt & OPT_IPV4) ++ af = AF_INET; ++ if (opt & OPT_IPV6) ++ af = AF_INET6; ++ lsa = xhost_and_af2sockaddr(hostname, 0, af); ++ } ++#else ++ lsa = xhost_and_af2sockaddr(hostname, 0, AF_INET); ++#endif ++ ++ if (source_lsa && source_lsa->u.sa.sa_family != lsa->u.sa.sa_family) ++ /* leaking it here... */ ++ source_lsa = NULL; ++ ++ dotted = xmalloc_sockaddr2dotted_noport(&lsa->u.sa); ++ ping(lsa); ++ print_stats_and_exit(EXIT_SUCCESS); ++ /*return EXIT_SUCCESS;*/ ++} ++#endif /* FEATURE_FANCY_PING */ ++ ++ ++int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; ++int ping_main(int argc UNUSED_PARAM, char **argv) ++{ ++#if !ENABLE_FEATURE_FANCY_PING ++ return common_ping_main(AF_UNSPEC, argv); ++#else ++ return common_ping_main(0, argv); ++#endif ++} ++ ++#if ENABLE_PING6 ++int ping6_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; ++int ping6_main(int argc UNUSED_PARAM, char **argv) ++{ ++# if !ENABLE_FEATURE_FANCY_PING ++ return common_ping_main(AF_INET6, argv); ++# else ++ return common_ping_main(OPT_IPV6, argv); ++# endif ++} ++#endif ++ ++/* from ping6.c: ++ * Copyright (c) 1989 The Regents of the University of California. ++ * All rights reserved. ++ * ++ * This code is derived from software contributed to Berkeley by ++ * Mike Muuss. ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions ++ * are met: ++ * 1. Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * 2. Redistributions in binary form must reproduce the above copyright ++ * notice, this list of conditions and the following disclaimer in the ++ * documentation and/or other materials provided with the distribution. ++ * ++ * 3. ++ * ++ * 4. Neither the name of the University nor the names of its contributors ++ * may be used to endorse or promote products derived from this software ++ * without specific prior written permission. ++ * ++ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ++ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ++ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ++ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ++ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ++ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ++ * SUCH DAMAGE. ++ */ -- cgit v1.2.3