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-rw-r--r--src/util-lua-ssh.c219
1 files changed, 219 insertions, 0 deletions
diff --git a/src/util-lua-ssh.c b/src/util-lua-ssh.c
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--- /dev/null
+++ b/src/util-lua-ssh.c
@@ -0,0 +1,219 @@
+/* Copyright (C) 2014 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * 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
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+
+/**
+ * \file
+ *
+ * \author Mats Klepsland <mats.klepsland@gmail.com>
+ *
+ */
+
+#include "suricata-common.h"
+#include "detect.h"
+#include "pkt-var.h"
+#include "conf.h"
+
+#include "threads.h"
+#include "threadvars.h"
+#include "tm-threads.h"
+
+#include "util-print.h"
+#include "util-unittest.h"
+
+#include "util-debug.h"
+
+#include "output.h"
+#include "app-layer.h"
+#include "app-layer-parser.h"
+#include "app-layer-ssh.h"
+#include "util-privs.h"
+#include "util-buffer.h"
+#include "util-proto-name.h"
+#include "util-logopenfile.h"
+#include "util-time.h"
+#include "rust.h"
+
+#ifdef HAVE_LUA
+
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+
+#include "util-lua.h"
+#include "util-lua-common.h"
+#include "util-lua-ssh.h"
+
+static int GetServerProtoVersion(lua_State *luastate, const Flow *f)
+{
+ void *state = FlowGetAppState(f);
+ if (state == NULL)
+ return LuaCallbackError(luastate, "error: no app layer state");
+ const uint8_t *protocol = NULL;
+ uint32_t b_len = 0;
+
+ void *tx = rs_ssh_state_get_tx(state, 0);
+ if (rs_ssh_tx_get_protocol(tx, &protocol, &b_len, STREAM_TOCLIENT) != 1)
+ return LuaCallbackError(luastate, "error: no server proto version");
+ if (protocol == NULL || b_len == 0) {
+ return LuaCallbackError(luastate, "error: no server proto version");
+ }
+
+ return LuaPushStringBuffer(luastate, protocol, b_len);
+}
+
+static int SshGetServerProtoVersion(lua_State *luastate)
+{
+ int r;
+
+ if (!(LuaStateNeedProto(luastate, ALPROTO_SSH)))
+ return LuaCallbackError(luastate, "error: protocol not ssh");
+
+ Flow *f = LuaStateGetFlow(luastate);
+ if (f == NULL)
+ return LuaCallbackError(luastate, "internal error: no flow");
+
+ r = GetServerProtoVersion(luastate, f);
+
+ return r;
+}
+
+static int GetServerSoftwareVersion(lua_State *luastate, const Flow *f)
+{
+ void *state = FlowGetAppState(f);
+ if (state == NULL)
+ return LuaCallbackError(luastate, "error: no app layer state");
+
+ const uint8_t *software = NULL;
+ uint32_t b_len = 0;
+
+ void *tx = rs_ssh_state_get_tx(state, 0);
+ if (rs_ssh_tx_get_software(tx, &software, &b_len, STREAM_TOCLIENT) != 1)
+ return LuaCallbackError(luastate, "error: no server software version");
+ if (software == NULL || b_len == 0) {
+ return LuaCallbackError(luastate, "error: no server software version");
+ }
+
+ return LuaPushStringBuffer(luastate, software, b_len);
+}
+
+static int SshGetServerSoftwareVersion(lua_State *luastate)
+{
+ int r;
+
+ if (!(LuaStateNeedProto(luastate, ALPROTO_SSH)))
+ return LuaCallbackError(luastate, "error: protocol not ssh");
+
+ Flow *f = LuaStateGetFlow(luastate);
+ if (f == NULL)
+ return LuaCallbackError(luastate, "internal error: no flow");
+
+ r = GetServerSoftwareVersion(luastate, f);
+
+ return r;
+}
+
+static int GetClientProtoVersion(lua_State *luastate, const Flow *f)
+{
+ void *state = FlowGetAppState(f);
+ if (state == NULL)
+ return LuaCallbackError(luastate, "error: no app layer state");
+
+ const uint8_t *protocol = NULL;
+ uint32_t b_len = 0;
+
+ void *tx = rs_ssh_state_get_tx(state, 0);
+ if (rs_ssh_tx_get_protocol(tx, &protocol, &b_len, STREAM_TOSERVER) != 1)
+ return LuaCallbackError(luastate, "error: no client proto version");
+ if (protocol == NULL || b_len == 0) {
+ return LuaCallbackError(luastate, "error: no client proto version");
+ }
+
+ return LuaPushStringBuffer(luastate, protocol, b_len);
+}
+
+static int SshGetClientProtoVersion(lua_State *luastate)
+{
+ int r;
+
+ if (!(LuaStateNeedProto(luastate, ALPROTO_SSH)))
+ return LuaCallbackError(luastate, "error: protocol not ssh");
+
+ Flow *f = LuaStateGetFlow(luastate);
+ if (f == NULL)
+ return LuaCallbackError(luastate, "internal error: no flow");
+
+ r = GetClientProtoVersion(luastate, f);
+
+ return r;
+}
+
+static int GetClientSoftwareVersion(lua_State *luastate, const Flow *f)
+{
+ void *state = FlowGetAppState(f);
+ if (state == NULL)
+ return LuaCallbackError(luastate, "error: no app layer state");
+
+ const uint8_t *software = NULL;
+ uint32_t b_len = 0;
+
+ void *tx = rs_ssh_state_get_tx(state, 0);
+ if (rs_ssh_tx_get_software(tx, &software, &b_len, STREAM_TOSERVER) != 1)
+ return LuaCallbackError(luastate, "error: no client software version");
+ if (software == NULL || b_len == 0) {
+ return LuaCallbackError(luastate, "error: no client software version");
+ }
+
+ return LuaPushStringBuffer(luastate, software, b_len);
+}
+
+static int SshGetClientSoftwareVersion(lua_State *luastate)
+{
+ int r;
+
+ if (!(LuaStateNeedProto(luastate, ALPROTO_SSH)))
+ return LuaCallbackError(luastate, "error: protocol not ssh");
+
+ Flow *f = LuaStateGetFlow(luastate);
+ if (f == NULL)
+ return LuaCallbackError(luastate, "internal error: no flow");
+
+ r = GetClientSoftwareVersion(luastate, f);
+
+ return r;
+}
+
+/** \brief register ssh lua extensions in a luastate */
+int LuaRegisterSshFunctions(lua_State *luastate)
+{
+ /* registration of the callbacks */
+ lua_pushcfunction(luastate, SshGetServerProtoVersion);
+ lua_setglobal(luastate, "SshGetServerProtoVersion");
+
+ lua_pushcfunction(luastate, SshGetServerSoftwareVersion);
+ lua_setglobal(luastate, "SshGetServerSoftwareVersion");
+
+ lua_pushcfunction(luastate, SshGetClientProtoVersion);
+ lua_setglobal(luastate, "SshGetClientProtoVersion");
+
+ lua_pushcfunction(luastate, SshGetClientSoftwareVersion);
+ lua_setglobal(luastate, "SshGetClientSoftwareVersion");
+
+ return 0;
+}
+
+#endif /* HAVE_LUA */
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