From e5888a1ffdae813d7575f5fb02275c6bb07e5199 Mon Sep 17 00:00:00 2001
From: Taru Karttunen <taruti@taruti.net>
Date: Wed, 30 Mar 2011 15:46:40 +0300
Subject: Import sources from 2011-03-30 iso image

---
 sys/src/cmd/netstat.c | 238 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 238 insertions(+)
 create mode 100755 sys/src/cmd/netstat.c

(limited to 'sys/src/cmd/netstat.c')

diff --git a/sys/src/cmd/netstat.c b/sys/src/cmd/netstat.c
new file mode 100755
index 000000000..6326a66ee
--- /dev/null
+++ b/sys/src/cmd/netstat.c
@@ -0,0 +1,238 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <ip.h>
+#include <ndb.h>
+
+void	pip(char*, Dir*);
+void	nstat(char*, void (*)(char*, Dir*));
+void	pipifc(void);
+
+Biobuf	out;
+char	*netroot;
+char *proto[20];
+int nproto;
+int	notrans;
+
+void
+usage(void)
+{
+	fprint(2, "usage: %s [-in] [-p proto] [network-dir]\n", argv0);
+	exits("usage");
+}
+
+void
+main(int argc, char *argv[])
+{
+	int justinterfaces = 0;
+	int i, tot, fd;
+	Dir *d;
+	char buf[128];
+
+	ARGBEGIN{
+	case 'i':
+		justinterfaces = 1;
+		break;
+	case 'n':
+		notrans = 1;
+		break;
+	case 'p':
+		if(nproto >= nelem(proto))
+			sysfatal("too many protos");
+		proto[nproto++] = EARGF(usage());
+		break;
+	default:
+		usage();
+	}ARGEND;
+
+	netroot = "/net";
+	switch(argc){
+	case 0:
+		break;
+	case 1:
+		netroot = argv[0];
+		break;
+	default:
+		usage();
+	}
+
+	Binit(&out, 1, OWRITE);
+
+	if(justinterfaces){
+		pipifc();
+		exits(0);
+	}
+
+	if(nproto){
+		for(i=0; i<nproto; i++)
+			nstat(proto[i], pip);
+	}else{
+		fd = open(netroot, OREAD);
+		if(fd < 0)
+			sysfatal("open %s: %r", netroot);
+
+		tot = dirreadall(fd, &d);
+		for(i=0; i<tot; i++){
+			if(strcmp(d[i].name, "ipifc") == 0)
+				continue;
+			snprint(buf, sizeof buf, "%s/%s/0/local", netroot, d[i].name);
+			if(access(buf, 0) >= 0)
+				nstat(d[i].name, pip);
+		}
+	}
+	exits(0);
+}
+
+void
+nstat(char *net, void (*f)(char*, Dir*))
+{
+	int fdir, i, tot;
+	Dir *dir;
+	char buf[128];
+
+	snprint(buf, sizeof buf, "%s/%s", netroot, net);
+	fdir = open(buf, OREAD);
+	if(fdir < 0)
+		return;
+
+	tot = dirreadall(fdir, &dir);
+	for(i = 0; i < tot; i++) {
+		(*f)(net, &dir[i]);
+		Bflush(&out);
+	}
+	free(dir);
+	close(fdir);
+}
+
+char*
+getport(char *net, char *p)
+{
+	static char port[10];
+
+	strncpy(port, p, sizeof(port)-1);
+	port[sizeof(port)-1] = 0;
+	if(notrans || (p = csgetvalue(netroot, "port", p, net, nil)) == nil)
+		return port;
+	strncpy(port, p, sizeof(port)-1);
+	port[sizeof(port)-1] = 0;
+	free(p);
+	return port;
+}
+
+void
+pip(char *net, Dir *db)
+{
+	int n, fd;
+	char buf[128], *p;
+	char *dname;
+
+	if(strcmp(db->name, "clone") == 0)
+		return;
+	if(strcmp(db->name, "stats") == 0)
+		return;
+
+	snprint(buf, sizeof buf, "%s/%s/%s/status", netroot, net, db->name);
+	fd = open(buf, OREAD);
+	if(fd < 0)
+		return;
+	n = read(fd, buf, sizeof(buf));
+	close(fd);
+	if(n < 0)
+		return;
+	buf[n] = 0;
+
+	p = strchr(buf, ' ');
+	if(p != 0)
+		*p = 0;
+	p = strrchr(buf, '\n');
+	if(p != 0)
+		*p = 0;
+	Bprint(&out, "%-4s %-4s %-10s %-12s ", net, db->name, db->uid, buf);
+
+	snprint(buf, sizeof buf, "%s/%s/%s/local", netroot, net, db->name);
+	fd = open(buf, OREAD);
+	if(fd < 0) {
+		Bprint(&out, "\n");
+		return;
+	}
+	n = read(fd, buf, sizeof(buf));
+	close(fd);
+	if(n < 0) {
+		Bprint(&out, "\n");
+		return;
+	}
+	buf[n-1] = 0;
+	p = strchr(buf, '!');
+	if(p == 0) {
+		Bprint(&out, "\n");
+		return;
+	}
+	*p = '\0';
+	Bprint(&out, "%-10s ", getport(net, p+1));
+
+	snprint(buf, sizeof buf, "%s/%s/%s/remote", netroot, net, db->name);
+	fd = open(buf, OREAD);
+	if(fd < 0) {
+		print("\n");
+		return;
+	}
+	n = read(fd, buf, sizeof(buf));
+	close(fd);
+	if(n < 0) {
+		print("\n");
+		return;
+	}
+	buf[n-1] = 0;
+	p = strchr(buf, '!');
+	if(p != nil)
+		*p++ = '\0';
+
+	if(notrans){
+		Bprint(&out, "%-10s %s\n", getport(net, p), buf);
+		return;
+	}
+	dname = csgetvalue(netroot, "ip", buf, "dom", nil);
+	if(dname == nil) {
+		Bprint(&out, "%-10s %s\n", getport(net, p), buf);
+		return;
+	}
+	Bprint(&out, "%-10s %s\n", getport(net, p), dname);
+	Bflush(&out);
+	free(dname);
+}
+
+void
+pipifc(void)
+{
+	Ipifc *ip, *nip;
+	Iplifc *lifc;
+	char buf[100];
+	int l, i;
+
+	fmtinstall('I', eipfmt);
+	fmtinstall('M', eipfmt);
+
+	ip = readipifc(netroot, nil, -1);
+
+	l = 7;
+	for(nip = ip; nip; nip = nip->next){
+		for(lifc = nip->lifc; lifc; lifc = lifc->next){
+			i = snprint(buf, sizeof buf, "%I", lifc->ip);
+			if(i > l)
+				l = i;
+			i = snprint(buf, sizeof buf, "%I", lifc->net);
+			if(i > l)
+				l = i;
+		}
+	}
+
+	for(nip = ip; nip; nip = nip->next){
+		for(lifc = nip->lifc; lifc; lifc = lifc->next)
+			Bprint(&out, "%-12s %5d %-*I %5M %-*I %8lud %8lud %8lud %8lud\n",
+				nip->dev, nip->mtu, 
+				l, lifc->ip, lifc->mask, l, lifc->net,
+				nip->pktin, nip->pktout,
+				nip->errin, nip->errout);
+	}
+	Bflush(&out);
+}
-- 
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