New package: pwnat-0.3

srcpkgs/pwnat/patches/fix_argument_parsing.diff

@@ -0,0 +1,89 @@
+From ef844e18aad75929bad415bbc633a760890501e8 Mon Sep 17 00:00:00 2001
+From: timdiels <timdiels.m@gmail.com>
+Date: Mon, 30 Sep 2013 18:27:13 +0200
+Subject: [PATCH] Fixed bug in client argument parsing
+
+e.g. pwnat -c 44444 a b 22
+would recognise "b" as proxy port, and eventually crash with a segfault
+---
+ udpclient.c | 45 ++++++++++++++++++++++++++++-----------------
+ 1 file changed, 28 insertions(+), 17 deletions(-)
+
+diff --git udpclient.c udpclient.c
+index a95ac50..0d23c0d 100644
+--- udpclient.c
++++ udpclient.c
+@@ -60,7 +60,20 @@ static void disconnect_and_remove_client(uint16_t id, list_t *clients,
+                                          fd_set *fds);
+ static void signal_handler(int sig);
+ 
+-int udpclient(int argc, char *argv[])
++bool isnumber(const char* str) {
++    if (!str) {
++        return false;
++    }
++
++    char* end;
++    strtol(str, &end, 10);
++    return *end == '\0';
++}
++
++/*
++ * argv: [local ip] <local port> <proxy host> [proxy port] <remote host> <remote port>
++ */
++int udpclient(int argc, char* argv[])
+ {
+     char *lhost, *lport, *phost, *pport, *rhost, *rport;
+     list_t *clients;
+@@ -72,7 +85,7 @@ int udpclient(int argc, char *argv[])
+     socket_t *udp_sock = NULL;
+     char data[MSG_MAX_LEN];
+     char addrstr[ADDRSTRLEN];
+-	char pport_s[6];
++    char pport_s[6] = "2222";
+     
+     struct timeval curr_time;
+     struct timeval check_time;
+@@ -89,29 +102,27 @@ int udpclient(int argc, char *argv[])
+     int ret;
+     int i;
+ 
+-	int icmp_sock = 0;
++    int icmp_sock = 0;
+     int timeexc = 0;
+ 
+-	struct sockaddr_in src, dest, rsrc;
+-	struct hostent *hp;
+-	uint32_t timeexc_ip;
++    struct sockaddr_in src, dest, rsrc;
++    struct hostent *hp;
++    uint32_t timeexc_ip;
+ 
+     signal(SIGINT, &signal_handler);
+ 
++    // Parse arguments
+     i = 0;    
+-	if (index(argv[i], 58) || index(argv[i], 46))
+-    	lhost = argv[i++];
+-	else	
+-		lhost = NULL;
++    if (!isnumber(argv[i]))
++        lhost = argv[i++];
++    else	
++        lhost = NULL;
+     lport = argv[i++];
+     phost = argv[i++];
+-	if (index(argv[i], 58) || index(argv[i], 46))
+-	{
+-		snprintf(pport_s, 5, "2222");
+-		pport = pport_s;
+-	}
+-	else	
+-    	pport = argv[i++];
++    if (isnumber(argv[i]))
++        pport = argv[i++];
++    else	
++        pport = pport_s;
+     rhost = argv[i++];
+     rport = argv[i++];
+ 

srcpkgs/pwnat/template

@@ -0,0 +1,18 @@
+# Template file for 'pwnat'
+pkgname=pwnat
+version=0.3
+# the git-hash of v0.3 as it isn't tagged
+_githash=572fcfb76a1b4b46faaa6b36817a39671b6f3c7e
+revision=1
+homepage="http://samy.pl/pwnat/"
+distfiles="https://github.com/samyk/pwnat/archive/${_githash}.tar.gz"
+short_desc="serverless NAT to NAT hole punching"
+maintainer="Enno Boland <eb@s01.de>"
+license="GPLv3"
+checksum=365da981ba1a39d7e3c8427fbcd9e7fcd3dd16cd30ae7e3b0aca50511fd8e1b1
+wrksrc="${pkgname}-${_githash}"
+build_style=gnu-makefile
+
+do_install() {
+	vbin pwnat
+}