diff options
| author | davidovski <david@davidovski.xyz> | 2022-06-15 23:15:23 +0100 |
|---|---|---|
| committer | davidovski <david@davidovski.xyz> | 2022-06-15 23:15:23 +0100 |
| commit | e4a392b4e1e547c9569abdd1f08ec51da3dc4562 (patch) | |
| tree | f23f62b3d309e332dd1d37b4c6ff5addc2c65453 /repo/netcat/0006-udp-scan-timeout.patch | |
| parent | e17a6ad453835a5c7d8a277c625688750a62e28d (diff) | |
added netcat
Diffstat (limited to 'repo/netcat/0006-udp-scan-timeout.patch')
| -rw-r--r-- | repo/netcat/0006-udp-scan-timeout.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/repo/netcat/0006-udp-scan-timeout.patch b/repo/netcat/0006-udp-scan-timeout.patch new file mode 100644 index 0000000..799acc6 --- /dev/null +++ b/repo/netcat/0006-udp-scan-timeout.patch @@ -0,0 +1,60 @@ +From: Aron Xu <aron@debian.org> +Date: Mon, 13 Feb 2012 15:29:37 +0800 +Subject: udp scan timeout + +--- + netcat.c | 25 ++++++++++++++++--------- + 1 file changed, 16 insertions(+), 9 deletions(-) + +diff --git a/netcat.c b/netcat.c +index f971893..9ab507a 100644 +--- a/netcat.c ++++ b/netcat.c +@@ -117,6 +117,8 @@ + #define CONNECTION_FAILED 1 + #define CONNECTION_TIMEOUT 2 + ++#define UDP_SCAN_TIMEOUT 3 /* Seconds */ ++ + /* Command Line Options */ + int Cflag = 0; /* CRLF line-ending */ + int dflag; /* detached, no stdin */ +@@ -525,7 +527,7 @@ main(int argc, char *argv[]) + continue; + + ret = 0; +- if (vflag || zflag) { ++ if (vflag) { + /* For UDP, make sure we are connected. */ + if (uflag) { + if (udptest(s) == -1) { +@@ -1298,15 +1300,20 @@ build_ports(char *p) + int + udptest(int s) + { +- int i, ret; +- +- for (i = 0; i <= 3; i++) { +- if (write(s, "X", 1) == 1) +- ret = 1; +- else +- ret = -1; ++ int i, t; ++ ++ if ((write(s, "X", 1) != 1) || ++ ((write(s, "X", 1) != 1) && (errno == ECONNREFUSED))) ++ return -1; ++ ++ /* Give the remote host some time to reply. */ ++ for (i = 0, t = (timeout == -1) ? UDP_SCAN_TIMEOUT : (timeout / 1000); ++ i < t; i++) { ++ sleep(1); ++ if ((write(s, "X", 1) != 1) && (errno == ECONNREFUSED)) ++ return -1; + } +- return (ret); ++ return 1; + } + + void +-- |