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authorRob Landley <rob@landley.net>2014-09-21 22:44:20 -0500
committerRob Landley <rob@landley.net>2014-09-21 22:44:20 -0500
commitc611c39db47324b9fa6e5cd0f602b3aa3f957ffe (patch)
tree738bfda0aa616b68372a40fd440ff726df88f290
parenta1a83e671fdd91dcb763651ac86295c217574e6e (diff)
downloadtoybox-c611c39db47324b9fa6e5cd0f602b3aa3f957ffe.tar.gz
Start on ping.c.
-rw-r--r--toys/pending/ping.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/toys/pending/ping.c b/toys/pending/ping.c
new file mode 100644
index 00000000..629f98bb
--- /dev/null
+++ b/toys/pending/ping.c
@@ -0,0 +1,110 @@
+/* ping.c - check network connectivity
+ *
+ * Copyright 2014 Rob Landley <rob@landley.net>
+ *
+ * Not in SUSv4.
+
+USE_PING(NEWTOY(ping, "<1>1t#<0>255c#<0s#<0>65535I:W#<0w#<0q46[-46]", TOYFLAG_ROOTONLY|TOYFLAG_USR|TOYFLAG_BIN))
+
+config PING
+ bool "ping"
+ default n
+ help
+ usage: ping [OPTIONS] HOST
+
+ Check network connectivity by sending packets to a host and reporting
+ its response.
+
+ Send ICMP ECHO_REQUEST packets to ipv4 or ipv6 addresses and prints each
+ echo it receives back, with round trip time.
+
+ Options:
+ -4, -6 Force IPv4 or IPv6
+ -c CNT Send CNT many packets
+ -I IFACE/IP Source interface or address
+ -q Quiet, only displays output at start and when finished
+ -s SIZE Packet SIZE in bytes (default 56)
+ -t TTL Set Time (number of hops) To Live
+ -W SEC Seconds to wait for response after all packets sent (default 10)
+ -w SEC Exit after this many seconds
+*/
+
+#define FOR_ping
+#include "toys.h"
+
+#include <ifaddrs.h>
+
+GLOBALS(
+ long wait_exit;
+ long wait_resp;
+ char *iface;
+ long size;
+ long count;
+ long ttl;
+
+ int sock;
+)
+
+void ping_main(void)
+{
+ int family, protocol;
+ union {
+ struct in_addr in;
+ struct in6_addr in6;
+ } src_addr;
+ char *host = 0;
+
+ // Determine IPv4 vs IPv6 type
+
+ if(!(toys.optflags & (FLAG_4|FLAG_6))) {
+// todo getaddrinfo instead?
+ if (inet_pton(AF_INET6, toys.optargs[0], (void*)&src_addr))
+ toys.optflags |= FLAG_6;
+ }
+
+ if (toys.optflags & FLAG_6) {
+ family = AF_INET6;
+ protocol = IPPROTO_ICMPV6;
+ } else {
+ family = AF_INET;
+ protocol = IPPROTO_ICMP;
+ }
+
+ if (!(toys.optflags & FLAG_s)) TT.size = 56; // 64-PHDR_LEN
+
+ if (TT.iface) {
+ memset(&src_addr, 0, sizeof(src_addr));
+
+ // IP address?
+ if (!inet_pton(family, TT.iface, &src_addr)) {
+ struct ifaddrs *ifsave, *ifa = 0;
+
+ // Interface name?
+ if (!getifaddrs(&ifsave)) {
+ for (ifa = ifsave; ifa; ifa = ifa->ifa_next) {
+ if (!ifa->ifa_addr || ifa->ifa_addr->sa_family != family) continue;
+ if (!strcmp(ifa->ifa_name, TT.iface)) {
+ if (family == AF_INET)
+ memcpy(&src_addr,
+ &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr,
+ sizeof(struct in_addr));
+ else memcpy(&src_addr,
+ &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr,
+ sizeof(struct in6_addr));
+ break;
+ }
+ }
+ freeifaddrs(ifsave);
+ }
+ if (!ifa)
+ error_exit("no v%d addr for -I %s", 4+2*(family==AF_INET6), TT.iface);
+ }
+ inet_ntop(family, &src_addr, toybuf, sizeof(toybuf));
+ host = xstrdup(toybuf);
+ }
+
+printf("host=%s\n", host);
+
+ // Open raw socket
+ TT.sock = xsocket(family, SOCK_RAW, protocol);
+}