#include <netinet/ip_icmp.h>
#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: depends on PLATFORM_LINUX
+//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: Make the output from the ping applet include statistics, and at the
//config: same time provide full support for ICMP packets.
-//applet:IF_PING(APPLET(ping, _BB_DIR_BIN, _BB_SUID_MAYBE))
-//applet:IF_PING6(APPLET(ping6, _BB_DIR_BIN, _BB_SUID_MAYBE))
+/* 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: "[OPTIONS] HOST"
//usage:# define ping_full_usage "\n\n"
//usage: "Send ICMP ECHO_REQUEST packets to network hosts\n"
-//usage: "\nOptions:"
//usage: "\n -4,-6 Force IP or IPv6 name resolution"
//usage: "\n -c CNT Send only CNT pings"
//usage: "\n -s SIZE Send SIZE data bytes in packets (default:56)"
//usage: "[OPTIONS] HOST"
//usage:# define ping6_full_usage "\n\n"
//usage: "Send ICMP ECHO_REQUEST packets to network hosts\n"
-//usage: "\nOptions:"
//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"
PINGINTERVAL = 1, /* 1 second */
};
-/* Common routines */
-
-static int in_cksum(unsigned short *buf, int sz)
-{
- int nleft = sz;
- int sum = 0;
- unsigned short *w = buf;
- unsigned short ans = 0;
-
- while (nleft > 1) {
- sum += *w++;
- nleft -= 2;
- }
-
- if (nleft == 1) {
- *(unsigned char *) (&ans) = *(unsigned char *) w;
- sum += ans;
- }
-
- sum = (sum >> 16) + (sum & 0xFFFF);
- sum += (sum >> 16);
- ans = ~sum;
- return ans;
-}
-
#if !ENABLE_FEATURE_FANCY_PING
/* Simple version */
pkt = (struct icmp *) G.packet;
memset(pkt, 0, sizeof(G.packet));
pkt->icmp_type = ICMP_ECHO;
- pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(G.packet));
+ pkt->icmp_cksum = inet_cksum((uint16_t *) pkt, sizeof(G.packet));
xsendto(pingsock, G.packet, DEFDATALEN + ICMP_MINLEN, &lsa->u.sa, lsa->len);
exit(nreceived == 0 || (deadline && nreceived < pingcount));
}
-static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
+static void sendping_tail(void (*sp)(int), int size_pkt)
{
int sz;
CLR((uint16_t)ntransmitted % MAX_DUP_CHK);
ntransmitted++;
+ size_pkt += datalen;
+
/* sizeof(pingaddr) can be larger than real sa size, but I think
* it doesn't matter */
- sz = xsendto(pingsock, pkt, size_pkt, &pingaddr.sa, sizeof(pingaddr));
+ 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);
/* No hton: we'll read it back on the same machine */
*(uint32_t*)&pkt->icmp_dun = monotonic_us();
- pkt->icmp_cksum = in_cksum((unsigned short *) pkt, datalen + ICMP_MINLEN);
+ pkt->icmp_cksum = inet_cksum((uint16_t *) pkt, datalen + ICMP_MINLEN);
- sendping_tail(sendping4, pkt, datalen + ICMP_MINLEN);
+ sendping_tail(sendping4, ICMP_MINLEN);
}
#if ENABLE_PING6
static void sendping6(int junk UNUSED_PARAM)
{
- struct icmp6_hdr *pkt = alloca(datalen + sizeof(struct icmp6_hdr) + 4);
+ struct icmp6_hdr *pkt = G.snd_packet;
//memset(pkt, 0, datalen + sizeof(struct icmp6_hdr) + 4);
pkt->icmp6_type = ICMP6_ECHO_REQUEST;
/*if (datalen >= 4)*/
*(uint32_t*)(&pkt->icmp6_data8[4]) = monotonic_us();
- //TODO? pkt->icmp_cksum = in_cksum(...);
+ //TODO? pkt->icmp_cksum = inet_cksum(...);
- sendping_tail(sendping6, pkt, datalen + sizeof(struct icmp6_hdr));
+ sendping_tail(sendping6, sizeof(struct icmp6_hdr));
}
#endif
}
}
#if ENABLE_PING6
-static void unpack6(char *packet, int sz, /*struct sockaddr_in6 *from,*/ int hoplimit)
+static void unpack6(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit)
{
struct icmp6_hdr *icmppkt;
char buf[INET6_ADDRSTRLEN];
if (sz >= sizeof(struct icmp6_hdr) + sizeof(uint32_t))
tp = (uint32_t *) &icmppkt->icmp6_data8[4];
unpack_tail(sz, tp,
- inet_ntop(AF_INET6, &pingaddr.sin6.sin6_addr,
+ inet_ntop(AF_INET6, &from->sin6_addr,
buf, sizeof(buf)),
recv_seq, hoplimit);
} else if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST) {
ICMP6_FILTER_SETPASSALL(&filt);
}
if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
- sizeof(filt)) < 0)
+ sizeof(filt)) < 0)
bb_error_msg_and_die("setsockopt(ICMP6_FILTER)");
}
#endif /*ICMP6_FILTER*/
move_from_unaligned_int(hoplimit, CMSG_DATA(mp));
}
}
- unpack6(G.rcv_packet, c, /*&from,*/ hoplimit);
+ unpack6(G.rcv_packet, c, &from, hoplimit);
if (pingcount && nreceived >= pingcount)
break;
}