diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/ping.c | 41 |
1 files changed, 18 insertions, 23 deletions
diff --git a/networking/ping.c b/networking/ping.c index 476c15c..eaaf91a 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -1,6 +1,6 @@ /* vi: set sw=4 ts=4: */ /* - * $Id: ping.c,v 1.47 2001/10/24 04:59:56 andersen Exp $ + * $Id: ping.c,v 1.48 2002/02/01 16:54:00 kraai Exp $ * Mini ping implementation for busybox * * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> @@ -175,13 +175,6 @@ static int in_cksum(unsigned short *buf, int sz) /* simple version */ #ifndef CONFIG_FEATURE_FANCY_PING -static char *hostname = NULL; - -static void noresp(int ign) -{ - printf("No response from %s\n", hostname); - exit(0); -} static void ping(const char *host) { @@ -191,6 +184,12 @@ static void ping(const char *host) int pingsock, c; char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN]; + void noresp(int ign) + { + printf("No response from %s\n", h->h_name); + exit(0); + } + pingsock = create_icmp_socket(); memset(&pingaddr, 0, sizeof(struct sockaddr_in)); @@ -198,7 +197,6 @@ static void ping(const char *host) pingaddr.sin_family = AF_INET; h = xgethostbyname(host); memcpy(&pingaddr.sin_addr, h->h_addr, sizeof(pingaddr.sin_addr)); - hostname = h->h_name; pkt = (struct icmp *) packet; memset(pkt, 0, sizeof(packet)); @@ -233,7 +231,7 @@ static void ping(const char *host) break; } } - printf("%s is alive!\n", hostname); + printf("%s is alive!\n", h->h_name); return; } @@ -249,16 +247,17 @@ extern int ping_main(int argc, char **argv) #else /* ! CONFIG_FEATURE_FANCY_PING */ /* full(er) version */ -static char *hostname = NULL; static struct sockaddr_in pingaddr; static int pingsock = -1; static int datalen; /* intentionally uninitialized to work around gcc bug */ -static long ntransmitted = 0, nreceived = 0, nrepeats = 0, pingcount = 0; -static int myid = 0, options = 0; -static unsigned long tmin = ULONG_MAX, tmax = 0, tsum = 0; +static long ntransmitted, nreceived, nrepeats, pingcount; +static int myid, options; +static unsigned long tmin = ULONG_MAX, tmax, tsum; static char rcvd_tbl[MAX_DUP_CHK / 8]; +struct hostent *hostent; + static void sendping(int); static void pingstats(int); static void unpack(char *, int, struct sockaddr_in *); @@ -271,7 +270,7 @@ static void pingstats(int junk) signal(SIGINT, SIG_IGN); - printf("\n--- %s ping statistics ---\n", hostname); + printf("\n--- %s ping statistics ---\n", hostent->h_name); printf("%ld packets transmitted, ", ntransmitted); printf("%ld packets received, ", nreceived); if (nrepeats) @@ -416,8 +415,6 @@ static void unpack(char *buf, int sz, struct sockaddr_in *from) static void ping(const char *host) { - struct hostent *h; - char buf[MAXHOSTNAMELEN]; char packet[datalen + MAXIPLEN + MAXICMPLEN]; int sockopt; @@ -426,13 +423,11 @@ static void ping(const char *host) memset(&pingaddr, 0, sizeof(struct sockaddr_in)); pingaddr.sin_family = AF_INET; - h = xgethostbyname(host); - if (h->h_addrtype != AF_INET) + hostent = xgethostbyname(host); + if (hostent->h_addrtype != AF_INET) error_msg_and_die("unknown address type; only AF_INET is currently supported."); - memcpy(&pingaddr.sin_addr, h->h_addr, sizeof(pingaddr.sin_addr)); - strncpy(buf, h->h_name, sizeof(buf) - 1); - hostname = buf; + memcpy(&pingaddr.sin_addr, hostent->h_addr, sizeof(pingaddr.sin_addr)); /* enable broadcast pings */ sockopt = 1; @@ -445,7 +440,7 @@ static void ping(const char *host) sizeof(sockopt)); printf("PING %s (%s): %d data bytes\n", - hostname, + hostent->h_name, inet_ntoa(*(struct in_addr *) &pingaddr.sin_addr.s_addr), datalen); |