1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
| | This patch is based on db2b1d9a8d4644ef892f47d84606ee96598d23fb
of http://anonscm.debian.org/cgit/collab-maint/netcat-openbsd.git
From: Aron Xu <aron@debian.org>
Date: Tue, 14 Feb 2012 23:02:00 +0800
Subject: serialized handling multiple clients
---
netcat.c | 39 +++++++++++++++++++--------------------
1 file changed, 19 insertions(+), 20 deletions(-)
diff --git a/netcat.c b/netcat.c
index 56cc15e..bf9940f 100644
--- a/netcat.c
+++ b/netcat.c
@@ -447,26 +447,24 @@ main(int argc, char *argv[])
s = unix_bind(host);
else
s = unix_listen(host);
- }
+ } else
+ s = local_listen(host, uport, hints);
+ if (s < 0)
+ err(1, NULL);
+
+ char* local;
+ if (family == AF_INET6)
+ local = ":::";
+ else
+ local = "0.0.0.0";
+ fprintf(stderr, "Listening on [%s] (family %d, port %d)\n",
+ host ?: local,
+ family,
+ *uport);
/* Allow only one connection at a time, but stay alive. */
for (;;) {
- if (family != AF_UNIX)
- s = local_listen(host, uport, hints);
- if (s < 0)
- err(1, NULL);
- char* local;
- if (family == AF_INET6 )
- local = "0.0.0.0";
- else if (family == AF_INET)
- local = ":::";
- else
- local = "unknown";
- fprintf(stderr, "Listening on [%s] (family %d, port %d)\n",
- host ?: local,
- family,
- *uport);
/*
* For UDP, we will use recvfrom() initially
* to wait for a caller, then use the regular
@@ -536,15 +534,16 @@ main(int argc, char *argv[])
close(connfd);
}
- if (family != AF_UNIX)
+ if (kflag)
+ continue;
+ if (family != AF_UNIX) {
close(s);
+ }
else if (uflag) {
if (connect(s, NULL, 0) < 0)
err(1, "connect");
}
-
- if (!kflag)
- break;
+ break;
}
} else if (family == AF_UNIX) {
ret = 0;
--
|