Code reorganization

Makefile.in

@@ -5,10 +5,7 @@ GIT_COMMITS=@GIT_COMMITS@
 
 ########
 
-CC?=gcc
+CC=@CC@
-DEBUG?=-g3
-OPTIMIZATION?=-O3 #-march=native
-WARN?=-Wall
 
 #Ultrasparc64 users experiencing SIGBUS should try the following gcc options
 #(thanks to Robert Gibbon)
@@ -16,7 +13,7 @@ PLATOPTS_SPARC64=-mcpu=ultrasparc -pipe -fomit-frame-pointer -ffast-math -finlin
 
 N2N_OBJS_OPT=
 LIBS_EDGE_OPT=@N2N_LIBS@
-CFLAGS=@CFLAGS@
+CFLAGS=@CFLAGS@ -I ./include
 LDFLAGS=@LDFLAGS@
 
 OPENSSL_CFLAGS=$(shell pkg-config openssl; echo $$?)
@@ -48,12 +45,9 @@ MAN7DIR=$(MANDIR)/man7
 MAN8DIR=$(MANDIR)/man8
 
 N2N_LIB=libn2n.a
-N2N_OBJS=n2n.o wire.o minilzo.o twofish.o speck.o \
+N2N_OBJS=$(patsubst src/%.c, src/%.o, $(wildcard src/*.c))
-	 edge_utils.o sn_utils.o \
+N2N_DEPS=$(wildcard include/*.h) $(wildcard src/*.c) Makefile 
-         transform_null.o transform_tf.o transform_aes.o transform_cc20.o transform_speck.o \
+
-	 header_encryption.o pearson.o \
-         tuntap_freebsd.o tuntap_netbsd.o tuntap_linux.o random_numbers.o \
-	 tuntap_osx.o
 LIBS_EDGE+=$(LIBS_EDGE_OPT)
 LIBS_SN=
 
@@ -77,19 +71,19 @@ all: $(APPS) $(DOCS) tools
 tools: $(N2N_LIB)
 	$(MAKE) -C $@
 
-edge: edge.c $(N2N_LIB) n2n_wire.h n2n.h Makefile
+edge: src/edge.c $(N2N_LIB) $(N2N_DEPS)
 	$(CC) $(CFLAGS) $< $(LDFLAGS) $(N2N_LIB) $(LIBS_EDGE) -o $@
 
-supernode: sn.c $(N2N_LIB) n2n.h Makefile
+supernode: src/sn.c $(N2N_LIB) $(N2N_DEPS)
 	$(CC) $(CFLAGS) $< $(LDFLAGS) $(N2N_LIB) $(LIBS_SN) -o $@
 
-example_edge_embed_quick_edge_init: example_edge_embed_quick_edge_init.c $(N2N_LIB) n2n.h
+example_edge_embed_quick_edge_init: src/example_edge_embed_quick_edge_init.c $(N2N_DEPS)
 	$(CC) $(CFLAGS) $< $(LDFLAGS) $(N2N_LIB) $(LIBS_EDGE) -o $@
 
-example_sn_embed: example_sn_embed.c $(N2N_LIB) n2n.h
+example_sn_embed: src/example_sn_embed.c $(N2N_DEPS)
 	$(CC) $(CFLAGS) $< $(LDFLAGS) $(N2N_LIB) $(LIBS_EDGE) -o $@
 
-example_edge_embed: example_edge_embed.c $(N2N_LIB) n2n.h
+example_edge_embed: src/example_edge_embed.c $(N2N_DEPS)
 	$(CC) $(CFLAGS) $< $(LDFLAGS) $(N2N_LIB) $(LIBS_EDGE) -o $@
 
 %.gz : %

configure.seed

@@ -15,6 +15,7 @@ fi
 
 N2N_LIBS=
 
+AC_PROG_CC([clang])
 AC_CHECK_LIB([zstd], [ZSTD_compress])
 
 if test "x$ac_cv_lib_zstd_ZSTD_compress" != xyes; then
@@ -92,6 +93,7 @@ fi
 
 DATE=`date +"%Y-%m-%d"`
 
+AC_SUBST(CC)
 AC_SUBST(CFLAGS)
 AC_SUBST(LDFLAGS)
 AC_SUBST(N2N_MAJOR)
@@ -104,7 +106,7 @@ AC_SUBST(GIT_RELEASE)
 AC_SUBST(N2N_DEFINES)
 AC_SUBST(N2N_LIBS)
 AC_SUBST(ADDITIONAL_TOOLS)
-AC_CONFIG_HEADERS(config.h)
+AC_CONFIG_HEADERS(include/config.h)
 AC_CONFIG_FILES(Makefile)
 AC_CONFIG_FILES(tools/Makefile)
 

include/edge_utils_win32.h

@@ -0,0 +1,34 @@
+/**
+ * (C) 2007-20 - ntop.org and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not see see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef WIN32
+
+#include <process.h>
+
+/* Multicast peers discovery disabled due to https://github.com/ntop/n2n/issues/65 */
+#define SKIP_MULTICAST_PEERS_DISCOVERY
+
+struct tunread_arg {
+  n2n_edge_t *eee;
+  int *keep_running;
+};
+
+extern HANDLE startTunReadThread(struct tunread_arg *arg);
+
+#endif
+

include/header_encryption.h

@@ -16,11 +16,6 @@
  *
  */
 
-#include <stdint.h>
-
-
-#include "n2n.h"
-#include "speck.h"
 
 
 /* Header encryption indicators */
@@ -28,15 +23,12 @@
 #define HEADER_ENCRYPTION_NONE          1
 #define HEADER_ENCRYPTION_ENABLED       2
 
-
 uint32_t packet_header_decrypt (uint8_t packet[], uint8_t packet_len,
                                 char * community_name, he_context_t * ctx);
 
-
 int8_t packet_header_decrypt_if_required (uint8_t packet[], uint16_t packet_len,
                                           struct sn_community * communities);
 
-
 int32_t packet_header_encrypt (uint8_t packet[], uint8_t header_len, he_context_t * ctx);
 
 

include/n2n.h

@@ -64,6 +64,8 @@
 #include <stdio.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <stdint.h>
+#include <time.h>
 
 #ifndef WIN32
 #include <unistd.h>
@@ -74,6 +76,16 @@
 
 #ifdef __linux__
 #define N2N_CAN_NAME_IFACE 1
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <net/if_arp.h>
+#include <net/if.h>
+#include <linux/if_tun.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#define GRND_NONBLOCK       1
 #endif /* #ifdef __linux__ */
 
 #ifdef __FreeBSD__
@@ -83,7 +95,12 @@
 #include <syslog.h>
 #include <sys/wait.h>
 
+#if defined (__RDRND__) || defined (__RDSEED__)
+#include <immintrin.h>
+#endif
+
 #define ETH_ADDR_LEN 6
+
 struct ether_hdr
 {
   uint8_t  dhost[ETH_ADDR_LEN];
@@ -93,10 +110,17 @@ struct ether_hdr
 
 typedef struct ether_hdr ether_hdr_t;
 
+#ifdef HAVE_LIBZSTD
+#include <zstd.h>
+#endif
+
 #ifdef __ANDROID_NDK__
 #undef N2N_HAVE_DAEMON
 #undef N2N_HAVE_SETUID
 #undef N2N_CAN_NAME_IFACE
+#include "android/edge_android.h"
+#include <tun2tap/tun2tap.h>
+#define ARP_PERIOD_INTERVAL             (10) /* sec */
 #endif /* #ifdef __ANDROID_NDK__ */
 
 #include <netinet/in.h>
@@ -106,27 +130,37 @@ typedef struct ether_hdr ether_hdr_t;
 #include <arpa/inet.h>
 #include <sys/types.h>
 #include <unistd.h>
+#include <string.h>
 #include <assert.h>
 #include <sys/stat.h>
+#include <stdint.h>
 #include <openssl/opensslv.h>
 #include <openssl/crypto.h>
+
 #include "minilzo.h"
+#include "n2n_define.h"
 
 #define closesocket(a) close(a)
 #endif /* #ifndef WIN32 */
 
 #include <string.h>
-
 #include <stdarg.h>
-
 #include "uthash.h"
+#include "lzoconf.h"
 
 #ifdef WIN32
 #include "win32/wintap.h"
+#include <sys/stat.h>
+#else
+#include <pwd.h>
 #endif /* #ifdef WIN32 */
 
 #include "n2n_wire.h"
 #include "n2n_transforms.h"
+#include "random_numbers.h"
+#include "pearson.h"
+#include "portable_endian.h"
+#include "speck.h"
 
 #ifdef WIN32
 #define N2N_IFNAMSIZ            64
@@ -147,43 +181,6 @@ typedef struct tuntap_dev {
 #define SOCKET int
 #endif /* #ifndef WIN32 */
 
-#define QUICKLZ               1
-
-/* N2N packet header indicators. */
-#define MSG_TYPE_REGISTER               1
-#define MSG_TYPE_DEREGISTER             2
-#define MSG_TYPE_PACKET                 3
-#define MSG_TYPE_REGISTER_ACK           4
-#define MSG_TYPE_REGISTER_SUPER         5
-#define MSG_TYPE_REGISTER_SUPER_ACK     6
-#define MSG_TYPE_REGISTER_SUPER_NAK     7
-#define MSG_TYPE_FEDERATION             8
-#define MSG_TYPE_PEER_INFO              9
-#define MSG_TYPE_QUERY_PEER            10
-#define MSG_TYPE_MAX_TYPE	       10
-
-/* N2N compression indicators. */
-/* Compression is disabled by default for outgoing packets if no cli
- * option is given. All edges are built with decompression support so
- * they are able to understand each other (this applies to lzo only). */
-#define N2N_COMPRESSION_ID_NONE		0	/* default, see edge_init_conf_defaults(...) in edge_utils.c */
-#define N2N_COMPRESSION_ID_LZO		1	/* set if '-z1' or '-z' cli option is present, see setOption(...) in edge.c */
-#ifdef N2N_HAVE_ZSTD
-#define N2N_COMPRESSION_ID_ZSTD		2	/* set if '-z2' cli option is present, available only if compiled with zstd lib */
-#define ZSTD_COMPRESSION_LEVEL		7	/* 1 (faster) ... 22 (more compression) */
-#endif
-// with the next major packet structure update, make '0' = invalid, and '1' = no compression
-// '2' = LZO, '3' = ZSTD, ... REVISIT then (also: change all occurences in source).
-
-#define N2N_COMPRESSION_ID_BITLEN	3	/* number of bits used for encoding compression id in the uppermost
-				 	           bits of transform_id; will be obsolete as soon as compression gets
-						   its own field in the packet. REVISIT then. */
-
-/* forward delcaration of header encryption context, see 'header_encryption.h' */
-typedef struct speck_context_t he_context_t;
-
-#define DEFAULT_MTU   1290
-
 /** Uncomment this to enable the MTU check, then try to ssh to generate a fragmented packet. */
 /** NOTE: see doc/MTU.md for an explanation on the 1400 value */
 //#define MTU_ASSERT_VALUE 1400
@@ -206,17 +203,7 @@ struct peer_info {
   UT_hash_handle hh; /* makes this structure hashable */
 };
 
-#define HASH_ADD_PEER(head,add)                                                \
+typedef struct speck_context_t he_context_t;
-    HASH_ADD(hh,head,mac_addr,sizeof(n2n_mac_t),add)
-#define HASH_FIND_PEER(head,mac,out)                                           \
-    HASH_FIND(hh,head,mac,sizeof(n2n_mac_t),out)
-#define N2N_EDGE_SN_HOST_SIZE   48
-#define N2N_EDGE_NUM_SUPERNODES 2
-#define N2N_EDGE_SUP_ATTEMPTS   3       /* Number of failed attmpts before moving on to next supernode. */
-#define N2N_PATHNAME_MAXLEN     256
-#define N2N_EDGE_MGMT_PORT      5644
-
-
 typedef char n2n_sn_name_t[N2N_EDGE_SN_HOST_SIZE];
 
 typedef struct n2n_route {
@@ -285,6 +272,9 @@ typedef struct sn_stats
 
 /* ************************************** */
 
+#include "header_encryption.h"
+#include "twofish.h"
+
 #ifdef __ANDROID_NDK__
 #include <android/log.h>
 #endif /* #ifdef __ANDROID_NDK__ */
@@ -298,21 +288,6 @@ typedef struct sn_stats
 
 /* ************************************** */
 
-#define SUPERNODE_IP    "127.0.0.1"
-#define SUPERNODE_PORT  1234
-
-/* ************************************** */
-
-#ifndef max
-#define max(a, b) ((a < b) ? b : a)
-#endif
-
-#ifndef min
-#define min(a, b) ((a > b) ? b : a)
-#endif
-
-/* ************************************** */
-
 /* Transop Init Functions */
 int n2n_transop_null_init(const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
 int n2n_transop_twofish_init(const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);

include/n2n_define.h

@@ -0,0 +1,94 @@
+/**
+ * (C) 2007-20 - ntop.org and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not see see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#define QUICKLZ               1
+
+/* N2N packet header indicators. */
+#define MSG_TYPE_REGISTER               1
+#define MSG_TYPE_DEREGISTER             2
+#define MSG_TYPE_PACKET                 3
+#define MSG_TYPE_REGISTER_ACK           4
+#define MSG_TYPE_REGISTER_SUPER         5
+#define MSG_TYPE_REGISTER_SUPER_ACK     6
+#define MSG_TYPE_REGISTER_SUPER_NAK     7
+#define MSG_TYPE_FEDERATION             8
+#define MSG_TYPE_PEER_INFO              9
+#define MSG_TYPE_QUERY_PEER            10
+#define MSG_TYPE_MAX_TYPE	       10
+
+#define SOCKET_TIMEOUT_INTERVAL_SECS    10
+#define REGISTER_SUPER_INTERVAL_DFL     20 /* sec, usually UDP NAT entries in a firewall expire after 30 seconds */
+
+#define IFACE_UPDATE_INTERVAL           (30) /* sec. How long it usually takes to get an IP lease. */
+#define TRANSOP_TICK_INTERVAL           (10) /* sec */
+
+#define ETH_FRAMESIZE 14
+#define IP4_SRCOFFSET 12
+#define IP4_DSTOFFSET 16
+#define IP4_MIN_SIZE  20
+#define UDP_SIZE      8
+
+/* heap allocation for compression as per lzo example doc */
+#define HEAP_ALLOC(var,size) lzo_align_t __LZO_MMODEL var [ ((size) + (sizeof(lzo_align_t) - 1)) / sizeof(lzo_align_t) ]
+static HEAP_ALLOC(wrkmem, LZO1X_1_MEM_COMPRESS);
+
+
+/* N2N compression indicators. */
+/* Compression is disabled by default for outgoing packets if no cli
+ * option is given. All edges are built with decompression support so
+ * they are able to understand each other (this applies to lzo only). */
+#define N2N_COMPRESSION_ID_NONE		0	/* default, see edge_init_conf_defaults(...) in edge_utils.c */
+#define N2N_COMPRESSION_ID_LZO		1	/* set if '-z1' or '-z' cli option is present, see setOption(...) in edge.c */
+#ifdef N2N_HAVE_ZSTD
+#define N2N_COMPRESSION_ID_ZSTD		2	/* set if '-z2' cli option is present, available only if compiled with zstd lib */
+#define ZSTD_COMPRESSION_LEVEL		7	/* 1 (faster) ... 22 (more compression) */
+#endif
+// with the next major packet structure update, make '0' = invalid, and '1' = no compression
+// '2' = LZO, '3' = ZSTD, ... REVISIT then (also: change all occurences in source).
+
+#define N2N_COMPRESSION_ID_BITLEN	3	/* number of bits used for encoding compression id in the uppermost
+				 	           bits of transform_id; will be obsolete as soon as compression gets
+						   its own field in the packet. REVISIT then. */
+
+#define DEFAULT_MTU   1290
+
+#define HASH_ADD_PEER(head,add)				\
+  HASH_ADD(hh,head,mac_addr,sizeof(n2n_mac_t),add)
+#define HASH_FIND_PEER(head,mac,out)		\
+  HASH_FIND(hh,head,mac,sizeof(n2n_mac_t),out)
+#define N2N_EDGE_SN_HOST_SIZE   48
+#define N2N_EDGE_NUM_SUPERNODES 2
+#define N2N_EDGE_SUP_ATTEMPTS   3       /* Number of failed attmpts before moving on to next supernode. */
+#define N2N_PATHNAME_MAXLEN     256
+#define N2N_EDGE_MGMT_PORT      5644
+
+/* ************************************** */
+
+#define SUPERNODE_IP    "127.0.0.1"
+#define SUPERNODE_PORT  1234
+
+/* ************************************** */
+
+#ifndef max
+#define max(a, b) ((a < b) ? b : a)
+#endif
+
+#ifndef min
+#define min(a, b) ((a > b) ? b : a)
+#endif
+

include/random_numbers.h

@@ -0,0 +1,38 @@
+/**
+ * (C) 2007-20 - ntop.org and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not see see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/* The WIN32 code is still untested and thus commented
+   #if defined (WIN32)
+   #include <Wincrypt.h>
+   #endif 
+*/
+
+struct rn_generator_state_t {
+  uint64_t a, b;
+};
+
+struct splitmix64_state_t {
+    uint64_t s;
+};
+
+
+int n2n_srand (uint64_t seed);
+
+uint64_t n2n_rand ();
+
+uint64_t n2n_seed ();

random_numbers.h

@@ -1,34 +0,0 @@
-#include <stdint.h>
-#include <time.h>
-
-
-#if defined (__linux__)
-  #include <sys/syscall.h>
-  #include <unistd.h>
-  #define GRND_NONBLOCK       1
-#endif
-
-#if defined (__RDRND__) || defined (__RDSEED__)
-  #include <immintrin.h>
-#endif
-
-/* The WIN32 code is still untested and thus commented
-#if defined (WIN32)
-  #include <Wincrypt.h>
-#endif */
-
-
-struct rn_generator_state_t {
-    uint64_t a, b;
-};
-
-struct splitmix64_state_t {
-    uint64_t s;
-};
-
-
-int n2n_srand (uint64_t seed);
-
-uint64_t n2n_rand ();
-
-uint64_t n2n_seed ();

src/edge.c

@@ -17,12 +17,6 @@
  */
 
 #include "n2n.h"
-#include "random_numbers.h"
-#ifdef WIN32
-#include <sys/stat.h>
-#else
-#include <pwd.h>
-#endif
 
 #define N2N_NETMASK_STR_SIZE    16 /* dotted decimal 12 numbers + 3 dots */
 #define N2N_MACNAMSIZ           18 /* AA:BB:CC:DD:EE:FF + NULL*/

src/edge_utils.c

@@ -17,49 +17,6 @@
  */
 
 #include "n2n.h"
-#include "lzoconf.h"
-#include "random_numbers.h"
-
-#ifdef HAVE_LIBZSTD
-#include <zstd.h>
-#endif
-
-#ifdef WIN32
-#include <process.h>
-/* Multicast peers discovery disabled due to https://github.com/ntop/n2n/issues/65 */
-#define SKIP_MULTICAST_PEERS_DISCOVERY
-#endif
-
-#ifdef __ANDROID_NDK__
-#include "android/edge_android.h"
-#include <tun2tap/tun2tap.h>
-#endif /* __ANDROID_NDK__ */
-
-
-#define SOCKET_TIMEOUT_INTERVAL_SECS    10
-#define REGISTER_SUPER_INTERVAL_DFL     20 /* sec, usually UDP NAT entries in a firewall expire after 30 seconds */
-
-#define IFACE_UPDATE_INTERVAL           (30) /* sec. How long it usually takes to get an IP lease. */
-#define TRANSOP_TICK_INTERVAL           (10) /* sec */
-
-#ifdef __ANDROID_NDK__
-#define ARP_PERIOD_INTERVAL             (10) /* sec */
-#endif
-
-#ifdef __linux__
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-#endif
-
-#define ETH_FRAMESIZE 14
-#define IP4_SRCOFFSET 12
-#define IP4_DSTOFFSET 16
-#define IP4_MIN_SIZE  20
-#define UDP_SIZE      8
-
-/* heap allocation for compression as per lzo example doc */
-#define HEAP_ALLOC(var,size) lzo_align_t __LZO_MMODEL var [ ((size) + (sizeof(lzo_align_t) - 1)) / sizeof(lzo_align_t) ]
-static HEAP_ALLOC(wrkmem, LZO1X_1_MEM_COMPRESS);
 
 /* ************************************** */
 
@@ -1517,9 +1474,7 @@ static void readFromTAPSocket(n2n_edge_t * eee) {
     len = uip_arp_len;
     memcpy(eth_pkt, uip_arp_buf, MIN(uip_arp_len, N2N_PKT_BUF_SIZE));
     traceEvent(TRACE_DEBUG, "ARP reply packet to send");
-  }
+  } else {
-  else
-    {
 #endif /* #ifdef __ANDROID_NDK__ */
     len = tuntap_read( &(eee->device), eth_pkt, N2N_PKT_BUF_SIZE );
 #ifdef __ANDROID_NDK__
@@ -1554,40 +1509,6 @@ static void readFromTAPSocket(n2n_edge_t * eee) {
 
 /* ************************************** */
 
-#ifdef WIN32
-
-struct tunread_arg {
-   n2n_edge_t *eee;
-   int *keep_running;
-};
-
-static DWORD* tunReadThread(LPVOID lpArg) {
-  struct tunread_arg *arg = (struct tunread_arg*)lpArg;
-
-  while(*arg->keep_running)
-    readFromTAPSocket(arg->eee);
-
-  return((DWORD*)NULL);
-}
-
-/* ************************************** */
-
-/** Start a second thread in Windows because TUNTAP interfaces do not expose
- *  file descriptors. */
-static HANDLE startTunReadThread(struct tunread_arg *arg) {
-  DWORD dwThreadId;
-
-  return(CreateThread(NULL,         /* security attributes */
-			 0,            /* use default stack size */
-			 (LPTHREAD_START_ROUTINE)tunReadThread, /* thread function */
-			 (void*)arg,   /* argument to thread function */
-			 0,            /* thread creation flags */
-			 &dwThreadId)); /* thread id out */
-}
-#endif
-
-/* ************************************** */
-
 /** Read a datagram from the main UDP socket to the internet. */
 static void readFromIPSocket(n2n_edge_t * eee, int in_sock) {
   n2n_common_t        cmn; /* common fields in the packet header */

src/edge_utils_win32.c

@@ -0,0 +1,49 @@
+/**
+ * (C) 2007-20 - ntop.org and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not see see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef WIN32
+
+#include "edge_utils_win32.h"
+
+/* ************************************** */
+
+static DWORD* tunReadThread(LPVOID lpArg) {
+  struct tunread_arg *arg = (struct tunread_arg*)lpArg;
+
+  while(*arg->keep_running)
+    readFromTAPSocket(arg->eee);
+
+  return((DWORD*)NULL);
+}
+
+/* ************************************** */
+
+/** Start a second thread in Windows because TUNTAP interfaces do not expose
+ *  file descriptors. */
+HANDLE startTunReadThread(struct tunread_arg *arg) {
+  DWORD dwThreadId;
+
+  return(CreateThread(NULL,         /* security attributes */
+		      0,            /* use default stack size */
+		      (LPTHREAD_START_ROUTINE)tunReadThread, /* thread function */
+		      (void*)arg,   /* argument to thread function */
+		      0,            /* thread creation flags */
+		      &dwThreadId)); /* thread id out */
+}
+#endif
+

src/example_edge_embed_quick_edge_init.c

@@ -17,7 +17,6 @@
  */
 
 #include "n2n.h"
-#include "random_numbers.h"
 
 /*
   This tool demonstrates how to easily embed

src/header_encryption.c

@@ -16,17 +16,12 @@
  *
  */
 
-#include "header_encryption.h"
-
-#include <string.h>
-
-#include "random_numbers.h"
-#include "pearson.h"
-#include "portable_endian.h"
 
+#include "n2n.h"
 
 #define HASH_FIND_COMMUNITY(head, name, out) HASH_FIND_STR(head, name, out)
 
+/* ********************************************************************** */
 
 uint32_t packet_header_decrypt (uint8_t packet[], uint8_t packet_len,
 			        char * community_name, he_context_t * ctx) {
@@ -58,6 +53,7 @@ uint32_t packet_header_decrypt (uint8_t packet[], uint8_t packet_len,
     return (0); // unsuccessful
 }
 
+/* ********************************************************************** */
 
 int8_t packet_header_decrypt_if_required (uint8_t packet[], uint16_t packet_len,
 					  struct sn_community *communities) {
@@ -113,6 +109,7 @@ int8_t packet_header_decrypt_if_required (uint8_t packet[], uint16_t packet_len,
   }
 }
 
+/* ********************************************************************** */
 
 int32_t packet_header_encrypt (uint8_t packet[], uint8_t header_len, he_context_t * ctx) {
   uint8_t iv[16];
@@ -134,6 +131,7 @@ int32_t packet_header_encrypt (uint8_t packet[], uint8_t header_len, he_context_
   return (0);
 }
 
+/* ********************************************************************** */
 
 void packet_header_setup_key (char * community_name, he_context_t * ctx) {
 

src/random_numbers.c

@@ -1,12 +1,29 @@
+/**
+ * (C) 2007-20 - ntop.org and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not see see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include "n2n.h"
+
 /* The following code offers an alterate pseudo random number generator
    namely XORSHIFT128+ to use instead of C's rand(). Its performance is
    on par with C's rand().
 */
 
 
-#include "random_numbers.h"
-
-
 /* The state must be seeded in a way that it is not all zero, choose some
    arbitrary defaults (in this case: taken from splitmix64) */
 static struct rn_generator_state_t rn_current_state = {

src/transform_aes.c

@@ -17,8 +17,6 @@
  */
 
 #include "n2n.h"
-#include "n2n_transforms.h"
-#include "random_numbers.h"
 
 #ifdef N2N_HAVE_AES
 

src/transform_cc20.c

@@ -17,8 +17,6 @@
  */
 
 #include "n2n.h"
-#include "n2n_transforms.h"
-#include "random_numbers.h"
 
 #ifdef HAVE_OPENSSL_1_1
 

src/transform_speck.c

@@ -17,10 +17,6 @@
  */
 
 #include "n2n.h"
-#include "n2n_transforms.h"
-#include "speck.h"
-#include "random_numbers.h"
-#include "pearson.h"
 
 #define N2N_SPECK_TRANSFORM_VERSION       1  /* version of the transform encoding */
 #define N2N_SPECK_IVEC_SIZE               16

src/transform_tf.c

@@ -17,13 +17,6 @@
  */
 
 #include "n2n.h"
-#include "n2n_transforms.h"
-#include "twofish.h"
-#include "random_numbers.h"
-#ifndef _MSC_VER
-/* Not included in Visual Studio 2008 */
-#include <strings.h> /* index() */
-#endif
 
 #define N2N_TWOFISH_NUM_SA              32 /* space for SAa */
 

src/tuntap_linux.c

@@ -16,16 +16,9 @@
  *
  */
 
-#include "n2n.h"
-
 #ifdef __linux__
 
-#include <net/if_arp.h>
+#include "n2n.h"
-#include <net/if.h>
-#include <linux/if_tun.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-#include "random_numbers.h"
 
 /* ********************************** */
 

src/twofish.c

@@ -35,13 +35,7 @@
 #ifndef __TWOFISH_LIBRARY_SOURCE__
 #define __TWOFISH_LIBRARY_SOURCE__
 
-#include <string.h>
+#include "n2n.h"
-#include <stdlib.h>
-#include <time.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include "twofish.h"
-#include "random_numbers.h"
 
 /* Fixed 8x8 permutation S-boxes */
 static const uint8_t TwoFish_P[2][256] =

tools/Makefile.in

@@ -16,8 +16,8 @@ endif
 
 LIBS_EDGE_OPT=@N2N_LIBS@
 LIBS_EDGE+=$(LIBS_EDGE_OPT)
-HEADERS=../n2n_wire.h ../n2n.h ../twofish.h ../n2n_transforms.h
+HEADERS=$(wildcard include/*.h)
-CFLAGS+=-I.. @CFLAGS@
+CFLAGS+=-I../include @CFLAGS@
 LDFLAGS+=-L..
 CFLAGS+=$(DEBUG) $(OPTIMIZATION) $(WARN)
 LDFLAGS=@LDFLAGS@