diff options
Diffstat (limited to 'networking/ping.c')
| -rw-r--r-- | networking/ping.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/networking/ping.c b/networking/ping.c index 12730be..d8a7033 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -1,13 +1,15 @@ /* vi: set sw=4 ts=4: */ /* - * $Id: ping.c,v 1.56 2004/03/15 08:28:48 andersen Exp $ * Mini ping implementation for busybox * * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> * * Adapted from the ping in netkit-base 0.10: * Copyright (c) 1989 The Regents of the University of California. - * Derived from software contributed to Berkeley by Mike Muuss. + * 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 tarball for details. */ @@ -74,7 +76,7 @@ static void ping(const char *host) pingsock = create_icmp_socket(); - memset(&pingaddr, 0, sizeof(struct sockaddr_in)); + memset(&pingaddr, 0, sizeof(pingaddr)); pingaddr.sin_family = AF_INET; h = xgethostbyname(host); @@ -202,7 +204,7 @@ static void sendping(int junk) pkt->icmp_cksum = 0; pkt->icmp_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */ pkt->icmp_id = myid; - CLR(ntohs(pkt->icmp_seq) % MAX_DUP_CHK); + CLR((uint16_t)ntransmitted % MAX_DUP_CHK); ntransmitted++; gettimeofday((struct timeval *) &pkt->icmp_dun, NULL); @@ -230,20 +232,20 @@ static void sendping(int junk) static 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"; + 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"; } } @@ -270,7 +272,7 @@ static void unpack(char *buf, int sz, struct sockaddr_in *from) return; /* not our ping */ if (icmppkt->icmp_type == ICMP_ECHOREPLY) { - u_int16_t recv_seq = ntohs(icmppkt->icmp_seq); + uint16_t recv_seq = ntohs(icmppkt->icmp_seq); ++nreceived; tp = (struct timeval *) icmppkt->icmp_data; @@ -307,11 +309,12 @@ static void unpack(char *buf, int sz, struct sockaddr_in *from) if (dupflag) printf(" (DUP!)"); puts(""); - } else + } else { if (icmppkt->icmp_type != ICMP_ECHO) bb_error_msg("warning: got ICMP %d (%s)", icmppkt->icmp_type, icmp_type_name(icmppkt->icmp_type)); + } fflush(stdout); } @@ -326,7 +329,7 @@ static void ping(const char *host) xbind(pingsock, (struct sockaddr*)&sourceaddr, sizeof(sourceaddr)); } - memset(&pingaddr, 0, sizeof(struct sockaddr_in)); + memset(&pingaddr, 0, sizeof(pingaddr)); pingaddr.sin_family = AF_INET; hostent = xgethostbyname(host); @@ -339,7 +342,7 @@ static void ping(const char *host) setsockopt_broadcast(pingsock); /* set recv buf for broadcast pings */ - sockopt = 48 * 1024; + sockopt = 48 * 1024; /* explain why 48k? */ setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, (char *) &sockopt, sizeof(sockopt)); |