--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/svr-session.c	Wed Mar 08 13:23:58 2006 +0000
@@ -0,0 +1,201 @@
+/*
+ * Dropbear - a SSH2 server
+ * 
+ * Copyright (c) 2002,2003 Matt Johnston
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE. */
+
+#include "includes.h"
+#include "session.h"
+#include "dbutil.h"
+#include "packet.h"
+#include "algo.h"
+#include "buffer.h"
+#include "dss.h"
+#include "ssh.h"
+#include "random.h"
+#include "kex.h"
+#include "channel.h"
+#include "chansession.h"
+#include "atomicio.h"
+#include "tcpfwd.h"
+#include "service.h"
+#include "auth.h"
+#include "runopts.h"
+
+static void svr_remoteclosed();
+
+struct serversession svr_ses; /* GLOBAL */
+
+static const packettype svr_packettypes[] = {
+	{SSH_MSG_CHANNEL_DATA, recv_msg_channel_data},
+	{SSH_MSG_CHANNEL_WINDOW_ADJUST, recv_msg_channel_window_adjust},
+	{SSH_MSG_USERAUTH_REQUEST, recv_msg_userauth_request}, /* server */
+	{SSH_MSG_SERVICE_REQUEST, recv_msg_service_request}, /* server */
+	{SSH_MSG_KEXINIT, recv_msg_kexinit},
+	{SSH_MSG_KEXDH_INIT, recv_msg_kexdh_init}, /* server */
+	{SSH_MSG_NEWKEYS, recv_msg_newkeys},
+#ifdef ENABLE_SVR_REMOTETCPFWD
+	{SSH_MSG_GLOBAL_REQUEST, recv_msg_global_request_remotetcp},
+#endif
+	{SSH_MSG_CHANNEL_REQUEST, recv_msg_channel_request},
+	{SSH_MSG_CHANNEL_OPEN, recv_msg_channel_open},
+	{SSH_MSG_CHANNEL_EOF, recv_msg_channel_eof},
+	{SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close},
+#ifdef USING_LISTENERS
+	{SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation},
+	{SSH_MSG_CHANNEL_OPEN_FAILURE, recv_msg_channel_open_failure},
+#endif
+	{0, 0} /* End */
+};
+
+static const struct ChanType *svr_chantypes[] = {
+	&svrchansess,
+#ifdef ENABLE_SVR_LOCALTCPFWD
+	&svr_chan_tcpdirect,
+#endif
+	NULL /* Null termination is mandatory. */
+};
+
+void svr_session(int sock, int childpipe, 
+		char* remotehost, char *addrstring) {
+
+	struct timeval timeout;
+
+    reseedrandom();
+
+	crypto_init();
+	common_session_init(sock, remotehost);
+
+	/* Initialise server specific parts of the session */
+	svr_ses.childpipe = childpipe;
+	svr_ses.addrstring = addrstring;
+	svr_authinitialise();
+	chaninitialise(svr_chantypes);
+	svr_chansessinitialise();
+
+	if (gettimeofday(&timeout, 0) < 0) {
+		dropbear_exit("Error getting time");
+	}
+
+	ses.connecttimeout = timeout.tv_sec + AUTH_TIMEOUT;
+
+	/* set up messages etc */
+	ses.remoteclosed = svr_remoteclosed;
+
+	/* packet handlers */
+	ses.packettypes = svr_packettypes;
+	ses.buf_match_algo = svr_buf_match_algo;
+
+	ses.isserver = 1;
+
+	/* We're ready to go now */
+	sessinitdone = 1;
+
+	/* exchange identification, version etc */
+	session_identification();
+
+	/* start off with key exchange */
+	send_msg_kexinit();
+
+	/* Run the main for loop. NULL is for the dispatcher - only the client
+	 * code makes use of it */
+	session_loop(NULL);
+
+	/* Not reached */
+
+}
+
+/* failure exit - format must be <= 100 chars */
+void svr_dropbear_exit(int exitcode, const char* format, va_list param) {
+
+	char fmtbuf[300];
+
+	if (!sessinitdone) {
+		/* before session init */
+		snprintf(fmtbuf, sizeof(fmtbuf), 
+				"premature exit: %s", format);
+	} else if (ses.authstate.authdone) {
+		/* user has authenticated */
+		snprintf(fmtbuf, sizeof(fmtbuf),
+				"exit after auth (%s): %s", 
+				ses.authstate.printableuser, format);
+	} else if (ses.authstate.printableuser) {
+		/* we have a potential user */
+		snprintf(fmtbuf, sizeof(fmtbuf), 
+				"exit before auth (user '%s', %d fails): %s",
+				ses.authstate.printableuser, ses.authstate.failcount, format);
+	} else {
+		/* before userauth */
+		snprintf(fmtbuf, sizeof(fmtbuf), 
+				"exit before auth: %s", format);
+	}
+
+	_dropbear_log(LOG_INFO, fmtbuf, param);
+
+	/* must be after we've done with username etc */
+	common_session_cleanup();
+
+	exit(exitcode);
+
+}
+
+/* priority is priority as with syslog() */
+void svr_dropbear_log(int priority, const char* format, va_list param) {
+
+	char printbuf[1024];
+	char datestr[20];
+	time_t timesec;
+	int havetrace = 0;
+
+	vsnprintf(printbuf, sizeof(printbuf), format, param);
+
+#ifndef DISABLE_SYSLOG
+	if (svr_opts.usingsyslog) {
+		syslog(priority, "%s", printbuf);
+	}
+#endif
+
+	/* if we are using DEBUG_TRACE, we want to print to stderr even if
+	 * syslog is used, so it is included in error reports */
+#ifdef DEBUG_TRACE
+	havetrace = debug_trace;
+#endif
+
+	if (!svr_opts.usingsyslog || havetrace)
+	{
+		timesec = time(NULL);
+		if (strftime(datestr, sizeof(datestr), "%b %d %H:%M:%S", 
+					localtime(&timesec)) == 0) {
+			datestr[0] = '?'; datestr[1] = '\0';
+		}
+		fprintf(stderr, "[%d] %s %s\n", getpid(), datestr, printbuf);
+	}
+}
+
+/* called when the remote side closes the connection */
+static void svr_remoteclosed() {
+
+	close(ses.sock);
+	ses.sock = -1;
+	dropbear_close("Exited normally");
+
+}
+