d6f10ff5bf
- Remove patch verbose-numeric-port.patch - Refresh patches: * broadcast-support.patch * build-without-TLS-support.patch * connect-timeout.patch * dccp-support.patch * destination-port-list.patch * get-sev-by-name.patch * misc-failures-and-features.patch * port-to-linux-with-libsd.patch * quit-timer.patch * send-crlf.patch * serialized-handling-multiple-clients.patch * set-TCP-MD5SIG-correctly-for-client-connections.patch * udp-scan-timeout.patch * use-flags-to-specify-listen-address.patch OBS-URL: https://build.opensuse.org/package/show/network:utilities/netcat-openbsd?expand=0&rev=20
236 lines
6.8 KiB
Diff
236 lines
6.8 KiB
Diff
From: Aron Xu <aron@debian.org>
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Date: Mon, 13 Feb 2012 15:56:51 +0800
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Subject: dccp support
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---
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nc.1 | 4 ++
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netcat.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++----------
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2 files changed, 79 insertions(+), 14 deletions(-)
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--- a/nc.1
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+++ b/nc.1
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@@ -33,7 +33,7 @@
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.Nd arbitrary TCP and UDP connections and listens
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.Sh SYNOPSIS
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.Nm nc
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-.Op Fl 46CDdFhklNnrStUuvz
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+.Op Fl 46CDdFhklNnrStUuvZz
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.Op Fl I Ar length
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.Op Fl i Ar interval
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.Op Fl M Ar ttl
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@@ -289,6 +289,8 @@ An IPv6 address can be specified unambig
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in square brackets.
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A proxy cannot be used with any of the options
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.Fl lsuU .
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+.It Fl Z
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+DCCP mode.
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.It Fl z
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Only scan for listening daemons, without sending any data to them.
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Cannot be used together with
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--- a/netcat.c
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+++ b/netcat.c
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@@ -146,6 +146,7 @@ int rflag; /* Random ports flag */
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char *sflag; /* Source Address */
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int tflag; /* Telnet Emulation */
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int uflag; /* UDP - Default to TCP */
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+int dccpflag; /* DCCP - Default to TCP */
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int vflag; /* Verbosity */
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int xflag; /* Socks proxy */
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int zflag; /* Port Scan Flag */
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@@ -224,6 +225,7 @@ ssize_t drainbuf(int, unsigned char *, s
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ssize_t fillbuf(int, unsigned char *, size_t *);
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# endif
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+char *proto_name(int uflag, int dccpflag);
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static int connect_with_timeout(int fd, const struct sockaddr *sa,
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socklen_t salen, int ctimeout);
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@@ -263,7 +265,7 @@ main(int argc, char *argv[])
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# if defined(TLS)
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"46C:cDde:FH:hI:i:K:klM:m:NnO:o:P:p:q:R:rSs:T:tUuV:vW:w:X:x:Z:z"))
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# else
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- "46CDdFhI:i:klM:m:NnO:P:p:q:rSs:T:tUuV:vW:w:X:x:z"))
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+ "46CDdFhI:i:klM:m:NnO:P:p:q:rSs:T:tUuV:vW:w:X:x:Zz"))
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# endif
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!= -1) {
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switch (ch) {
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@@ -380,6 +382,13 @@ main(int argc, char *argv[])
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case 'u':
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uflag = 1;
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break;
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+ case 'Z':
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+# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
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+ dccpflag = 1;
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+# else
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+ errx(1, "no DCCP support available");
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+# endif
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+ break;
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case 'V':
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# if defined(RT_TABLEID_MAX)
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rtableid = (int)strtonum(optarg, 0,
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@@ -484,6 +493,10 @@ main(int argc, char *argv[])
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/* Cruft to make sure options are clean, and used properly. */
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if (argv[0] && !argv[1] && family == AF_UNIX) {
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+# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
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+ if (dccpflag)
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+ errx(1, "cannot use -Z and -U");
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+# endif
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host = argv[0];
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uport = NULL;
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} else if (!argv[0] && lflag) {
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@@ -577,8 +590,20 @@ main(int argc, char *argv[])
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if (family != AF_UNIX) {
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memset(&hints, 0, sizeof(struct addrinfo));
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hints.ai_family = family;
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- hints.ai_socktype = uflag ? SOCK_DGRAM : SOCK_STREAM;
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- hints.ai_protocol = uflag ? IPPROTO_UDP : IPPROTO_TCP;
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+ if (uflag) {
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+ hints.ai_socktype = SOCK_DGRAM;
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+ hints.ai_protocol = IPPROTO_UDP;
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+ }
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+# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
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+ else if (dccpflag) {
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+ hints.ai_socktype = SOCK_DCCP;
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+ hints.ai_protocol = IPPROTO_DCCP;
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+ }
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+# endif
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+ else {
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+ hints.ai_socktype = SOCK_STREAM;
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+ hints.ai_protocol = IPPROTO_TCP;
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+ }
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if (nflag)
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hints.ai_flags |= AI_NUMERICHOST;
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}
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@@ -586,7 +611,10 @@ main(int argc, char *argv[])
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if (xflag) {
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if (uflag)
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errx(1, "no proxy support for UDP mode");
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-
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+# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
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+ if (dccpflag)
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+ errx(1, "no proxy support for DCCP mode");
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+# endif
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if (lflag)
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errx(1, "no proxy support for listen");
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@@ -833,19 +861,20 @@ main(int argc, char *argv[])
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}
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}
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+ char *proto = proto_name(uflag, dccpflag);
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/* Don't look up port if -n. */
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if (nflag)
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sv = NULL;
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else {
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sv = getservbyport(
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ntohs(atoi(portlist[i])),
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- uflag ? "udp" : "tcp");
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+ proto);
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}
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fprintf(stderr,
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"Connection to %s %s port [%s/%s] "
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"succeeded!\n", host, portlist[i],
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- uflag ? "udp" : "tcp",
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+ proto,
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sv ? sv->s_name : "*");
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}
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if (Fflag)
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@@ -1060,6 +1089,24 @@ unix_listen(char *path)
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return s;
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}
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+char *proto_name(int uflag, int dccpflag) {
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+
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+ char *proto = NULL;
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+ if (uflag) {
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+ proto = "udp";
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+ }
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+# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
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+ else if (dccpflag) {
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+ proto = "dccp";
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+ }
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+# endif
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+ else {
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+ proto = "tcp";
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+ }
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+
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+ return proto;
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+}
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+
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/*
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* remote_connect()
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* Returns a socket connected to a remote host. Properly binds to a local
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@@ -1090,8 +1137,21 @@ remote_connect(const char *host, const c
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# endif
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memset(&ahints, 0, sizeof(struct addrinfo));
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ahints.ai_family = res->ai_family;
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- ahints.ai_socktype = uflag ? SOCK_DGRAM : SOCK_STREAM;
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- ahints.ai_protocol = uflag ? IPPROTO_UDP : IPPROTO_TCP;
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+ if (uflag) {
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+ ahints.ai_socktype = SOCK_DGRAM;
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+ ahints.ai_protocol = IPPROTO_UDP;
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+
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+ }
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+# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
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+ else if (dccpflag) {
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+ hints.ai_socktype = SOCK_DCCP;
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+ hints.ai_protocol = IPPROTO_DCCP;
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+ }
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+# endif
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+ else {
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+ ahints.ai_socktype = SOCK_STREAM;
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+ ahints.ai_protocol = IPPROTO_TCP;
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+ }
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ahints.ai_flags = AI_PASSIVE;
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if ((error = getaddrinfo(sflag, pflag, &ahints, &ares)))
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errx(1, "getaddrinfo: %s", gai_strerror(error));
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@@ -1103,15 +1163,16 @@ remote_connect(const char *host, const c
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}
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set_common_sockopts(s, res->ai_family);
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+ char *proto = proto_name(uflag, dccpflag);
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if ((error = connect_with_timeout(s, res->ai_addr, res->ai_addrlen, timeout)) == CONNECTION_SUCCESS)
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break;
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if (vflag && error == CONNECTION_FAILED)
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warn("connect to %s port %s (%s) failed", host, port,
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- uflag ? "udp" : "tcp");
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- else if (vflag && error == CONNECTION_TIMEOUT)
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+ proto);
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+ else if (vflag && error == CONNECTION_TIMEOUT)
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warn("connect to %s port %s (%s) timed out", host, port,
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- uflag ? "udp" : "tcp");
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+ proto);
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save_errno = errno;
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close(s);
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@@ -1715,7 +1776,8 @@ build_ports(char *p)
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int hi, lo, cp;
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int x = 0;
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- sv = getservbyname(p, uflag ? "udp" : "tcp");
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+ char *proto = proto_name(uflag, dccpflag);
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+ sv = getservbyname(p, proto);
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if (sv) {
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if (asprintf(&portlist[0], "%d", ntohs(sv->s_port)) < 0)
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err(1, "asprintf");
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@@ -2095,6 +2157,7 @@ help(void)
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\t-w timeout Timeout for connects and final net reads\n\
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\t-X proto Proxy protocol: \"4\", \"5\" (SOCKS) or \"connect\"\n\
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\t-x addr[:port]\tSpecify proxy address and port\n\
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+ \t-Z DCCP mode\n\
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\t-z Zero-I/O mode [used for scanning]\n\
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Port numbers can be individual or ranges: lo-hi [inclusive]\n");
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exit(0);
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@@ -2104,7 +2167,7 @@ void
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usage(int ret)
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{
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fprintf(stderr,
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- "usage: nc [-46CDdFhklNnrStUuvz] [-I length] [-i interval] [-M ttl]\n"
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+ "usage: nc [-46CDdFhklNnrStUuvZz] [-I length] [-i interval] [-M ttl]\n"
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"\t [-m minttl] [-O length] [-P proxy_username] [-p source_port]\n"
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"\t [-q seconds] [-s source] [-T keyword] [-V rtable] [-W recvlimit] "
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"[-w timeout]\n"
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