ptunnel-ng:

	* this is now an autotools project (added/renamed required files e.g. AUTHORS, COPYING)
	* removed user defined ip header (buggy; not useful anymore)

1 files changed, 145 insertions, 0 deletions

diff --git a/src/ptunnel.h b/src/ptunnel.h
new file mode 100644
index 0000000..7ce15e3
--- /dev/null
+++ b/src/ptunnel.h
@@ -0,0 +1,145 @@
+/*	ptunnel.h
+	ptunnel is licensed under the BSD license:
+	
+	Copyright (c) 2004-2011, Daniel Stoedle <daniels@cs.uit.no>,
+	Yellow Lemon Software. All rights reserved.
+	
+	Redistribution and use in source and binary forms, with or without
+	modification, are permitted provided that the following conditions are met:
+
+	- Redistributions of source code must retain the above copyright notice,
+	  this list of conditions and the following disclaimer.
+
+	- Redistributions in binary form must reproduce the above copyright notice,
+	  this list of conditions and the following disclaimer in the documentation
+	  and/or other materials provided with the distribution.
+
+	- Neither the name of the Yellow Lemon Software nor the names of its
+	  contributors may be used to endorse or promote products derived from this
+	  software without specific prior written permission.
+
+	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+	AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+	ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+	LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+	CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+	POSSIBILITY OF SUCH DAMAGE.
+		
+	Contacting the author:
+	You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe,
+	in case your text editor didn't realize), here: <daniels@cs.uit.no>
+	
+	The official ptunnel website is here:
+	<http://www.cs.uit.no/~daniels/PingTunnel/>
+	
+	Note that the source code is best viewed with tabs set to 4 spaces.
+*/
+
+#ifndef PING_TUNNEL_H
+#define PING_TUNNEL_H 1
+
+#ifndef WIN32
+#include <sys/unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <pthread.h>
+#include <errno.h>
+#include <net/ethernet.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <grp.h>
+#endif /* !WIN32 */
+#include <stdarg.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <pcap.h>
+
+#include "pkt.h"
+#include "pdesc.h"
+#include "challenge.h"
+
+extern pthread_mutex_t chain_lock;
+extern uint32_t num_tunnels;
+extern const int icmp_receive_buf_len;
+extern proxy_desc_t *chain;
+extern uint32_t *seq_expiry_tbl;
+extern const char *state_name[kNum_proto_types];
+
+/* pt_thread_info_t: A simple (very simple, in fact) structure that allows us
+ * to pass an arbitrary number of params to the threads we create. Currently,
+ * that's just one single parameter: The socket which the thread should listen
+ * to.
+ */
+typedef struct {
+	int sock;
+} pt_thread_info_t;
+
+/* pqueue_elem_t: An queue element in the pqueue structure (below).
+ */
+typedef struct pqueue_elem_t {
+	/** size of data buffer */
+	unsigned long bytes;
+	/** next queue element (if any) */
+	struct pqueue_elem_t *next;
+	/** optional data */
+	char data[0];
+} pqueue_elem_t;
+
+/* pqueue_t: A simple queue strucutre.
+ */
+typedef struct {
+	pqueue_elem_t *head;
+	pqueue_elem_t *tail;
+	int elems;
+} pqueue_t;
+
+#ifdef HAVE_PCAP
+/* pcap_info_t: Structure to hold information related to packet capturing.
+ */
+typedef struct {
+	pcap_t *pcap_desc;
+	/** compiled filter program */
+	struct bpf_program fp;
+	uint32_t netp;
+	uint32_t netmask;
+	/** buffers for error info */
+	char *pcap_err_buf;
+	/** buffers for packet info */
+	char *pcap_data_buf;
+	/** queue of packets to process */
+	pqueue_t pkt_q;
+} pcap_info_t;
+#endif
+
+/* function Prototypes */
+void*    pt_proxy(void *args);
+void     pcap_packet_handler(u_char *refcon, const struct pcap_pkthdr *hdr,
+                         const u_char* pkt);
+
+void     pt_forwarder(void);
+
+void     print_statistics(xfer_stats_t *xfer, int is_continuous);
+
+void     init_ip_packet(ip_packet_t *packet, uint16_t id, uint16_t frag_offset,
+                        uint16_t pkt_len, uint8_t ttl, uint32_t src_ip, uint32_t dst_ip,
+                        bool is_last_frag, bool dont_frag);
+
+uint16_t calc_icmp_checksum(uint16_t *data, int bytes);
+
+void     send_termination_msg(proxy_desc_t *cur, int icmp_sock);
+
+#endif