--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysoptions.h	Tue Sep 23 16:02:51 2008 +0000
@@ -0,0 +1,205 @@
+/*******************************************************************
+ * You shouldn't edit this file unless you know you need to. 
+ * This file is only included from options.h
+ *******************************************************************/
+
+#ifndef DROPBEAR_VERSION
+#define DROPBEAR_VERSION "0.51"
+#endif
+
+#define LOCAL_IDENT "SSH-2.0-dropbear_" DROPBEAR_VERSION
+#define PROGNAME "dropbear"
+
+/* Spec recommends after one hour or 1 gigabyte of data. One hour
+ * is a bit too verbose, so we try 8 hours */
+#ifndef KEX_REKEY_TIMEOUT
+#define KEX_REKEY_TIMEOUT (3600 * 8)
+#endif
+#ifndef KEX_REKEY_DATA
+#define KEX_REKEY_DATA (1<<30) /* 2^30 == 1GB, this value must be < INT_MAX */
+#endif
+/* Close connections to clients which haven't authorised after AUTH_TIMEOUT */
+#ifndef AUTH_TIMEOUT
+#define AUTH_TIMEOUT 300 /* we choose 5 minutes */
+#endif
+
+/* Minimum key sizes for DSS and RSA */
+#ifndef MIN_DSS_KEYLEN
+#define MIN_DSS_KEYLEN 512
+#endif
+#ifndef MIN_RSA_KEYLEN
+#define MIN_RSA_KEYLEN 512
+#endif
+
+#define MAX_BANNER_SIZE 2000 /* this is 25*80 chars, any more is foolish */
+#define MAX_BANNER_LINES 20 /* How many lines the client will display */
+
+/* the number of NAME=VALUE pairs to malloc for environ, if we don't have
+ * the clearenv() function */
+#define ENV_SIZE 100
+
+#define MAX_CMD_LEN 1024 /* max length of a command */
+#define MAX_TERM_LEN 200 /* max length of TERM name */
+
+#define MAX_HOST_LEN 254 /* max hostname len for tcp fwding */
+#define MAX_IP_LEN 15 /* strlen("255.255.255.255") == 15 */
+
+#define DROPBEAR_MAX_PORTS 10 /* max number of ports which can be specified,
+								 ipv4 and ipv6 don't count twice */
+
+/* Each port might have at least a v4 and a v6 address */
+#define MAX_LISTEN_ADDR (DROPBEAR_MAX_PORTS*3)
+
+#define _PATH_TTY "/dev/tty"
+
+#define _PATH_CP "/bin/cp"
+
+/* success/failure defines */
+#define DROPBEAR_SUCCESS 0
+#define DROPBEAR_FAILURE -1
+
+/* various algorithm identifiers */
+#define DROPBEAR_KEX_DH_GROUP1 0
+
+#define DROPBEAR_SIGNKEY_ANY 0
+#define DROPBEAR_SIGNKEY_RSA 1
+#define DROPBEAR_SIGNKEY_DSS 2
+#define DROPBEAR_SIGNKEY_NONE 3
+
+#define DROPBEAR_COMP_NONE 0
+#define DROPBEAR_COMP_ZLIB 1
+
+/* Required for pubkey auth */
+#if defined(ENABLE_SVR_PUBKEY_AUTH) || defined(DROPBEAR_CLIENT)
+#define DROPBEAR_SIGNKEY_VERIFY
+#endif
+
+/* SHA1 is 20 bytes == 160 bits */
+#define SHA1_HASH_SIZE 20
+/* SHA512 is 64 bytes == 512 bits */
+#define SHA512_HASH_SIZE 64
+/* MD5 is 16 bytes = 128 bits */
+#define MD5_HASH_SIZE 16
+
+/* largest of MD5 and SHA1 */
+#define MAX_MAC_LEN SHA1_HASH_SIZE
+
+
+#define MAX_KEY_LEN 32 /* 256 bits for aes256 etc */
+#define MAX_IV_LEN 20 /* must be same as max blocksize, 
+						 and >= SHA1_HASH_SIZE */
+#define MAX_MAC_KEY 20
+
+#define MAX_NAME_LEN 64 /* maximum length of a protocol name, isn't
+						   explicitly specified for all protocols (just
+						   for algos) but seems valid */
+
+#define MAX_PROPOSED_ALGO 20
+
+/* size/count limits */
+#define MIN_PACKET_LEN 16
+
+#define RECV_MAX_PACKET_LEN (MAX(35000, ((RECV_MAX_PAYLOAD_LEN)+100)))
+
+/* for channel code */
+#define TRANS_MAX_WINDOW 500000000 /* 500MB is sufficient, stopping overflow */
+#define TRANS_MAX_WIN_INCR 500000000 /* overflow prevention */
+
+#define RECV_WINDOWEXTEND (opts.recv_window / 3) /* We send a "window extend" every
+								RECV_WINDOWEXTEND bytes */
+#define MAX_RECV_WINDOW (1024*1024) /* 1 MB should be enough */
+
+#define MAX_CHANNELS 100 /* simple mem restriction, includes each tcp/x11
+							connection, so can't be _too_ small */
+
+#define MAX_STRING_LEN 1400 /* ~= MAX_PROPOSED_ALGO * MAX_NAME_LEN, also
+							   is the max length for a password etc */
+
+/* For a 4096 bit DSS key, empirically determined */
+#define MAX_PUBKEY_SIZE 1700
+/* For a 4096 bit DSS key, empirically determined */
+#define MAX_PRIVKEY_SIZE 1700
+
+/* The maximum size of the bignum portion of the kexhash buffer */
+/* Sect. 8 of the transport draft, K_S + e + f + K */
+#define KEXHASHBUF_MAX_INTS (1700 + 130 + 130 + 130)
+
+#define DROPBEAR_MAX_SOCKS 2 /* IPv4, IPv6 are all we'll get for now. Revisit
+								in a few years time.... */
+
+#define DROPBEAR_MAX_CLI_PASS 1024
+
+#define DROPBEAR_MAX_CLI_INTERACT_PROMPTS 80 /* The number of prompts we'll 
+												accept for keyb-interactive
+												auth */
+
+#if defined(DROPBEAR_AES256_CBC) || defined(DROPBEAR_AES128_CBC)
+#define DROPBEAR_AES_CBC
+#endif
+
+#if defined(DROPBEAR_TWOFISH256_CBC) || defined(DROPBEAR_TWOFISH128_CBC)
+#define DROPBEAR_TWOFISH_CBC
+#endif
+
+#ifndef ENABLE_X11FWD
+#define DISABLE_X11FWD
+#endif
+
+#ifndef ENABLE_AGENTFWD
+#define DISABLE_AGENTFWD
+#endif
+
+#if defined(ENABLE_CLI_REMOTETCPFWD) || defined(ENABLE_CLI_LOCALTCPFWD)
+#define ENABLE_CLI_ANYTCPFWD 
+#endif
+
+#if defined(ENABLE_CLI_LOCALTCPFWD) || defined(ENABLE_SVR_REMOTETCPFWD)
+#define DROPBEAR_TCP_ACCEPT
+#endif
+
+#if defined(ENABLE_CLI_REMOTETCPFWD) || defined(ENABLE_CLI_LOCALTCPFWD) || \
+	defined(ENABLE_SVR_REMOTETCPFWD) || defined(ENABLE_SVR_LOCALTCPFWD) || \
+	defined(ENABLE_AGENTFWD) || defined(ENABLE_X11FWD)
+#define USING_LISTENERS
+#endif
+
+#if defined(ENABLE_CLI_NETCAT) && defined(ENABLE_CLI_PROXYCMD)
+#define ENABLE_CLI_MULTIHOP
+#endif
+
+#if defined(DROPBEAR_CLIENT) || defined(ENABLE_SVR_PUBKEY_AUTH)
+#define DROPBEAR_KEY_LINES /* ie we're using authorized_keys or known_hosts */
+#endif
+
+#if defined(ENABLE_SVR_PASSWORD_AUTH) && defined(ENABLE_SVR_PAM_AUTH)
+#error "You can't turn on PASSWORD and PAM auth both at once. Fix it in options.h"
+#endif
+
+#if defined(DROPBEAR_RANDOM_DEV) && defined(DROPBEAR_PRNGD_SOCKET)
+#error "You can't turn on DROPBEAR_PRNGD_SOCKET and DROPBEAR_RANDOM_DEV at once"
+#endif
+
+#if !defined(DROPBEAR_RANDOM_DEV) && !defined(DROPBEAR_PRNGD_SOCKET)
+#error "You must choose one of DROPBEAR_PRNGD_SOCKET or DROPBEAR_RANDOM_DEV in options.h"
+#endif
+
+/* We use dropbear_client and dropbear_server as shortcuts to avoid redundant
+ * code, if we're just compiling as client or server */
+#if defined(DROPBEAR_SERVER) && defined(DROPBEAR_CLIENT)
+
+#define IS_DROPBEAR_SERVER (ses.isserver == 1)
+#define IS_DROPBEAR_CLIENT (ses.isserver == 0)
+
+#elif defined(DROPBEAR_SERVER)
+
+#define IS_DROPBEAR_SERVER 1
+#define IS_DROPBEAR_CLIENT 0
+
+#elif defined(DROPBEAR_CLIENT)
+
+#define IS_DROPBEAR_SERVER 0
+#define IS_DROPBEAR_CLIENT 1
+
+#else
+#error You must compiled with either DROPBEAR_CLIENT or DROPBEAR_SERVER selected
+#endif