--- gvpe/src/global.h 2003/03/26 01:58:46 1.6 +++ gvpe/src/global.h 2008/08/07 17:54:27 1.24 @@ -1,19 +1,32 @@ /* global.h -- global variables and constants + Copyright (C) 2003-2008 Marc Lehmann - 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 2 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, write to the Free Software - Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + This file is part of GVPE. + + GVPE 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 . + + Additional permission under GNU GPL version 3 section 7 + + If you modify this Program, or any covered work, by linking or + combining it with the OpenSSL project's OpenSSL library (or a modified + version of that library), containing parts covered by the terms of the + OpenSSL or SSLeay licenses, the licensors of this Program grant you + additional permission to convey the resulting work. Corresponding + Source for a non-source form of such a combination shall include the + source code for the parts of OpenSSL used as well as that of the + covered work. */ #ifndef GLOBAL_H__ @@ -23,6 +36,12 @@ #include +/* Protocol version. Different major versions are incompatible, + * different minor versions probably are compatible ;) + */ + +#define PROTOCOL_MAJOR 0 +#define PROTOCOL_MINOR 1 #define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 #define RSA_KEYLEN ((RSA_KEYBITS) >> 3) @@ -30,38 +49,38 @@ #define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( #define RSA_HASHLEN (160 >> 3) +#define RSA_RESLEN RSA_HASHLEN #define RSA_IDLEN 16 // how many bytes are used to identify the challenge -#define RSA_TTL 20 // challenge bytes timeout after n seconds +#define RSA_TTL 120 // challenge bytes timeout after n seconds #define CIPHER ENABLE_CIPHER () #define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) #define DIGEST ENABLE_DIGEST () #define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) -#define MAX_SEQNO 0xfffffff0U +#define WINDOWSIZE 512 // sliding window size +#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8) #define CHG_SEQNO 0 // where the seqno starts within the rsa challenge #define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge #define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) -// hdr seq len hmac MAC MAC -#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) -#define IP_OVERHEAD 20 // size of a (normal) ip header -#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header -#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol -#define ETH_OVERHEAD 14 // the size of an ethernet header -#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares - -#define PKTCACHESIZE 4 // the size of the memory pool for packets - -#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) +// hdr seq len hmac MAC MAC +#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) +#define IP_OVERHEAD 20 // size of a (normal) ip header +#define GRE_OVERHEAD (IP_OVERHEAD + 4) +#define ICMP_OVERHEAD (IP_OVERHEAD + 4) +#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care) +#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength +#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) +#define ETH_OVERHEAD 14 // the size of an ethernet header +#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares -#define WINDOWSIZE 512 // sliding window size +#define PKTCACHESIZE 16 // the size of the memory pool for packets extern char *confbase; // directory in which all config files are extern char *thisnode; // config for current node (TODO: remove) -extern char *pidfilename; // pid file location #endif