/src/suricata8/src/util-lua-tls.c

Source
/* 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 Eric Leblond <eric@regit.org>
 *
 */

#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-ssl.h"
#include "util-privs.h"
#include "util-buffer.h"
#include "util-proto-name.h"
#include "util-logopenfile.h"
#include "util-time.h"

#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

#include "util-lua.h"
#include "util-lua-common.h"
#include "util-lua-tls.h"

static const char tls_state_mt[] = "suricata:tls";

struct LuaTls {
    const SSLState *state; // state
};

static int LuaTlsFlowStateGet(lua_State *luastate)
{
    if (!LuaStateNeedProto(luastate, ALPROTO_TLS)) {
        return LuaCallbackError(luastate, "error: protocol not tls");
    }
    Flow *f = LuaStateGetFlow(luastate);
    if (f == NULL) {
        LUA_ERROR("failed to get flow");
    }

    struct LuaTls *s = (struct LuaTls *)lua_newuserdata(luastate, sizeof(*s));
    if (s == NULL) {
        LUA_ERROR("failed to allocate userdata");
    }

    void *state = FlowGetAppState(f);
    if (state == NULL)
        return LuaCallbackError(luastate, "error: no app layer state");
    s->state = (const SSLState *)state;
    luaL_getmetatable(luastate, tls_state_mt);
    lua_setmetatable(luastate, -2);
    return 1;
}

static int GetCertNotBefore(lua_State *luastate, bool client, const SSLState *ssl_state)
{
    const SSLStateConnp *connp;

    if (client) {
        connp = &ssl_state->client_connp;
    } else {
        connp = &ssl_state->server_connp;
    }

    if (connp->cert0_not_before == 0)
        return LuaCallbackError(luastate, "error: no certificate NotBefore");

    return LuaPushInteger(luastate, connp->cert0_not_before);
}

static int LuaTlsGetServerCertNotBefore(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get flow");
    }

    return GetCertNotBefore(luastate, false, s->state);
}

static int LuaTlsGetClientCertNotBefore(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get flow");
    }

    return GetCertNotBefore(luastate, true, s->state);
}

static int GetCertNotAfter(lua_State *luastate, bool client, const SSLState *ssl_state)
{
    const SSLStateConnp *connp;

    if (client) {
        connp = &ssl_state->client_connp;
    } else {
        connp = &ssl_state->server_connp;
    }

    if (connp->cert0_not_after == 0)
        return LuaCallbackError(luastate, "error: no certificate NotAfter");

    return LuaPushInteger(luastate, connp->cert0_not_after);
}

static int LuaTlsGetServerCertNotAfter(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    return GetCertNotAfter(luastate, false, s->state);
}
static int LuaTlsGetClientCertNotAfter(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    return GetCertNotAfter(luastate, true, s->state);
}

static int GetCertInfo(lua_State *luastate, bool client, const SSLState *ssl_state)
{
    const SSLStateConnp *connp;

    if (client) {
        connp = &ssl_state->client_connp;
    } else {
        connp = &ssl_state->server_connp;
    }

    if (connp->cert0_subject == NULL)
        return LuaCallbackError(luastate, "error: no cert");

    /* tls.version */
    char ssl_version[SSL_VERSION_MAX_STRLEN];
    SSLVersionToString(ssl_state->server_connp.version, ssl_version);

    int r = LuaPushStringBuffer(luastate, (uint8_t *)ssl_version, strlen(ssl_version));
    r += LuaPushStringBuffer(luastate, connp->cert0_subject, connp->cert0_subject_len);
    r += LuaPushStringBuffer(luastate, connp->cert0_issuerdn, connp->cert0_issuerdn_len);
    r += LuaPushStringBuffer(luastate, (uint8_t *)connp->cert0_fingerprint, strlen(connp->cert0_fingerprint));
    return r;
}

static int LuaTlsGetServerCertInfo(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    return GetCertInfo(luastate, false, s->state);
}

static int LuaTlsGetClientCertInfo(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    return GetCertInfo(luastate, true, s->state);
}

static int GetSNI(lua_State *luastate, const SSLState *ssl_state)
{
    if (ssl_state->client_connp.sni == NULL)
        return LuaCallbackError(luastate, "error: no server name indication");

    return LuaPushStringBuffer(
            luastate, ssl_state->client_connp.sni, ssl_state->client_connp.sni_len);
}

static int LuaTlsGetSNI(lua_State *luastate)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
        return LuaCallbackError(luastate, "error: protocol not tls");

    return GetSNI(luastate, s->state);
}

static int GetCertChain(lua_State *luastate, bool client)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
        return LuaCallbackError(luastate, "error: protocol not tls");

    const SSLStateConnp *connp;

    if (client) {
        connp = &s->state->client_connp;
    } else {
        connp = &s->state->server_connp;
    }

    uint32_t u = 0;
    lua_newtable(luastate);
    SSLCertsChain *cert = NULL;

    TAILQ_FOREACH(cert, &connp->certs, next)
    {
        lua_pushinteger(luastate, u++);

        lua_newtable(luastate);

        lua_pushstring(luastate, "length");
        lua_pushinteger(luastate, cert->cert_len);
        lua_settable(luastate, -3);

        lua_pushstring(luastate, "data");
        LuaPushStringBuffer(luastate, cert->cert_data, cert->cert_len);

        lua_settable(luastate, -3);
        lua_settable(luastate, -3);
    }

    return 1;
}

static int LuaTlsGetServerCertChain(lua_State *luastate)
{
    return GetCertChain(luastate, false);
}

static int LuaTlsGetClientCertChain(lua_State *luastate)
{
    return GetCertChain(luastate, true);
}

static int GetCertSerial(lua_State *luastate, bool client)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get flow");
    }

    const SSLStateConnp *connp;

    if (client) {
        connp = &s->state->client_connp;
    } else {
        connp = &s->state->server_connp;
    }
    if (connp->cert0_serial == NULL)
        return LuaCallbackError(luastate, "error: no certificate serial");

    return LuaPushStringBuffer(luastate, connp->cert0_serial, connp->cert0_serial_len);
}

static int LuaTlsGetServerCertSerial(lua_State *luastate)
{
    return GetCertSerial(luastate, false);
}

static int LuaTlsGetClientCertSerial(lua_State *luastate)
{
    return GetCertSerial(luastate, true);
}

static int GetAgreedVersion(lua_State *luastate, bool client)
{
    struct LuaTls *s = (struct LuaTls *)luaL_checkudata(luastate, 1, tls_state_mt);
    if (s->state == NULL) {
        LUA_ERROR("failed to get state");
    }

    uint16_t version;
    if (client) {
        version = s->state->client_connp.version;
    } else {
        version = s->state->server_connp.version;
    }

    char ssl_version[SSL_VERSION_MAX_STRLEN];
    SSLVersionToString(version, ssl_version);

    lua_pushstring(luastate, (const char *)&ssl_version);
    return 1;
}

static int LuaTlsGetServerVersion(lua_State *luastate)
{
    return GetAgreedVersion(luastate, false);
}

static int LuaTlsGetClientVersion(lua_State *luastate)
{
    return GetAgreedVersion(luastate, true);
}

static const struct luaL_Reg tlslib_meta[] = {
    // clang-format off
    { "get_server_cert_not_before", LuaTlsGetServerCertNotBefore },
    { "get_client_cert_not_before", LuaTlsGetClientCertNotBefore },
    { "get_server_cert_not_after", LuaTlsGetServerCertNotAfter },
    { "get_client_cert_not_after", LuaTlsGetClientCertNotAfter },
    { "get_server_version", LuaTlsGetServerVersion },
    { "get_client_version", LuaTlsGetClientVersion },
    { "get_server_serial", LuaTlsGetServerCertSerial },
    { "get_client_serial", LuaTlsGetClientCertSerial },
    { "get_server_cert_info", LuaTlsGetServerCertInfo },
    { "get_client_cert_info", LuaTlsGetClientCertInfo },
    { "get_client_sni", LuaTlsGetSNI },
    { "get_client_cert_chain", LuaTlsGetClientCertChain },
    { "get_server_cert_chain", LuaTlsGetServerCertChain },
    { NULL, NULL, }
    // clang-format off
};

static const struct luaL_Reg tlslib[] = {
    // clang-format off
    { "get_tx", LuaTlsFlowStateGet },
    { NULL, NULL, },
    // clang-format on
};

int SCLuaLoadTlsLib(lua_State *L)
{
    luaL_newmetatable(L, tls_state_mt);
    lua_pushvalue(L, -1);
    lua_setfield(L, -2, "__index");
    luaL_setfuncs(L, tlslib_meta, 0);

    luaL_newlib(L, tlslib);
    return 1;
}

Coverage Report

Created: 2026-09-06 07:25

Line	Count	Source
1		/* Copyright (C) 2014 Open Information Security Foundation
2		*
3		* You can copy, redistribute or modify this Program under the terms of
4		* the GNU General Public License version 2 as published by the Free
5		* Software Foundation.
6		*
7		* This program is distributed in the hope that it will be useful,
8		* but WITHOUT ANY WARRANTY; without even the implied warranty of
9		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10		* GNU General Public License for more details.
11		*
12		* You should have received a copy of the GNU General Public License
13		* version 2 along with this program; if not, write to the Free Software
14		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15		* 02110-1301, USA.
16		*/
17
18
19		/**
20		* \file
21		*
22		* \author Eric Leblond <eric@regit.org>
23		*
24		*/
25
26		#include "suricata-common.h"
27		#include "detect.h"
28		#include "pkt-var.h"
29		#include "conf.h"
30
31		#include "threads.h"
32		#include "threadvars.h"
33		#include "tm-threads.h"
34
35		#include "util-print.h"
36		#include "util-unittest.h"
37
38		#include "util-debug.h"
39
40		#include "output.h"
41		#include "app-layer.h"
42		#include "app-layer-parser.h"
43		#include "app-layer-ssl.h"
44		#include "util-privs.h"
45		#include "util-buffer.h"
46		#include "util-proto-name.h"
47		#include "util-logopenfile.h"
48		#include "util-time.h"
49
50		#include "lua.h"
51		#include "lualib.h"
52		#include "lauxlib.h"
53
54		#include "util-lua.h"
55		#include "util-lua-common.h"
56		#include "util-lua-tls.h"
57
58		static const char tls_state_mt[] = "suricata:tls";
59
60		struct LuaTls {
61		const SSLState *state; // state
62		};
63
64		static int LuaTlsFlowStateGet(lua_State *luastate)
65	0	{
66	0	if (!LuaStateNeedProto(luastate, ALPROTO_TLS)) {
67	0	return LuaCallbackError(luastate, "error: protocol not tls");
68	0	}
69	0	Flow *f = LuaStateGetFlow(luastate);
70	0	if (f == NULL) {
71	0	LUA_ERROR("failed to get flow");
72	0	}
73
74	0	struct LuaTls s = (struct LuaTls )lua_newuserdata(luastate, sizeof(*s));
75	0	if (s == NULL) {
76	0	LUA_ERROR("failed to allocate userdata");
77	0	}
78
79	0	void *state = FlowGetAppState(f);
80	0	if (state == NULL)
81	0	return LuaCallbackError(luastate, "error: no app layer state");
82	0	s->state = (const SSLState *)state;
83	0	luaL_getmetatable(luastate, tls_state_mt);
84	0	lua_setmetatable(luastate, -2);
85	0	return 1;
86	0	}
87
88		static int GetCertNotBefore(lua_State luastate, bool client, const SSLState ssl_state)
89	0	{
90	0	const SSLStateConnp *connp;
91
92	0	if (client) {
93	0	connp = &ssl_state->client_connp;
94	0	} else {
95	0	connp = &ssl_state->server_connp;
96	0	}
97
98	0	if (connp->cert0_not_before == 0)
99	0	return LuaCallbackError(luastate, "error: no certificate NotBefore");
100
101	0	return LuaPushInteger(luastate, connp->cert0_not_before);
102	0	}
103
104		static int LuaTlsGetServerCertNotBefore(lua_State *luastate)
105	0	{
106	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
107	0	if (s->state == NULL) {
108	0	LUA_ERROR("failed to get flow");
109	0	}
110
111	0	return GetCertNotBefore(luastate, false, s->state);
112	0	}
113
114		static int LuaTlsGetClientCertNotBefore(lua_State *luastate)
115	0	{
116	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
117	0	if (s->state == NULL) {
118	0	LUA_ERROR("failed to get flow");
119	0	}
120
121	0	return GetCertNotBefore(luastate, true, s->state);
122	0	}
123
124		static int GetCertNotAfter(lua_State luastate, bool client, const SSLState ssl_state)
125	0	{
126	0	const SSLStateConnp *connp;
127
128	0	if (client) {
129	0	connp = &ssl_state->client_connp;
130	0	} else {
131	0	connp = &ssl_state->server_connp;
132	0	}
133
134	0	if (connp->cert0_not_after == 0)
135	0	return LuaCallbackError(luastate, "error: no certificate NotAfter");
136
137	0	return LuaPushInteger(luastate, connp->cert0_not_after);
138	0	}
139
140		static int LuaTlsGetServerCertNotAfter(lua_State *luastate)
141	0	{
142	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
143	0	if (s->state == NULL) {
144	0	LUA_ERROR("failed to get state");
145	0	}
146
147	0	return GetCertNotAfter(luastate, false, s->state);
148	0	}
149		static int LuaTlsGetClientCertNotAfter(lua_State *luastate)
150	0	{
151	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
152	0	if (s->state == NULL) {
153	0	LUA_ERROR("failed to get state");
154	0	}
155
156	0	return GetCertNotAfter(luastate, true, s->state);
157	0	}
158
159		static int GetCertInfo(lua_State luastate, bool client, const SSLState ssl_state)
160	0	{
161	0	const SSLStateConnp *connp;
162
163	0	if (client) {
164	0	connp = &ssl_state->client_connp;
165	0	} else {
166	0	connp = &ssl_state->server_connp;
167	0	}
168
169	0	if (connp->cert0_subject == NULL)
170	0	return LuaCallbackError(luastate, "error: no cert");
171
172		/* tls.version */
173	0	char ssl_version[SSL_VERSION_MAX_STRLEN];
174	0	SSLVersionToString(ssl_state->server_connp.version, ssl_version);
175
176	0	int r = LuaPushStringBuffer(luastate, (uint8_t *)ssl_version, strlen(ssl_version));
177	0	r += LuaPushStringBuffer(luastate, connp->cert0_subject, connp->cert0_subject_len);
178	0	r += LuaPushStringBuffer(luastate, connp->cert0_issuerdn, connp->cert0_issuerdn_len);
179	0	r += LuaPushStringBuffer(luastate, (uint8_t *)connp->cert0_fingerprint, strlen(connp->cert0_fingerprint));
180	0	return r;
181	0	}
182
183		static int LuaTlsGetServerCertInfo(lua_State *luastate)
184	0	{
185	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
186	0	if (s->state == NULL) {
187	0	LUA_ERROR("failed to get state");
188	0	}
189
190	0	return GetCertInfo(luastate, false, s->state);
191	0	}
192
193		static int LuaTlsGetClientCertInfo(lua_State *luastate)
194	0	{
195	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
196	0	if (s->state == NULL) {
197	0	LUA_ERROR("failed to get state");
198	0	}
199
200	0	return GetCertInfo(luastate, true, s->state);
201	0	}
202
203		static int GetSNI(lua_State luastate, const SSLState ssl_state)
204	0	{
205	0	if (ssl_state->client_connp.sni == NULL)
206	0	return LuaCallbackError(luastate, "error: no server name indication");
207
208	0	return LuaPushStringBuffer(
209	0	luastate, ssl_state->client_connp.sni, ssl_state->client_connp.sni_len);
210	0	}
211
212		static int LuaTlsGetSNI(lua_State *luastate)
213	0	{
214	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
215	0	if (s->state == NULL) {
216	0	LUA_ERROR("failed to get state");
217	0	}
218
219	0	if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
220	0	return LuaCallbackError(luastate, "error: protocol not tls");
221
222	0	return GetSNI(luastate, s->state);
223	0	}
224
225		static int GetCertChain(lua_State *luastate, bool client)
226	0	{
227	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
228	0	if (s->state == NULL) {
229	0	LUA_ERROR("failed to get state");
230	0	}
231
232	0	if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
233	0	return LuaCallbackError(luastate, "error: protocol not tls");
234
235	0	const SSLStateConnp *connp;
236
237	0	if (client) {
238	0	connp = &s->state->client_connp;
239	0	} else {
240	0	connp = &s->state->server_connp;
241	0	}
242
243	0	uint32_t u = 0;
244	0	lua_newtable(luastate);
245	0	SSLCertsChain *cert = NULL;
246
247	0	TAILQ_FOREACH(cert, &connp->certs, next)
248	0	{
249	0	lua_pushinteger(luastate, u++);
250
251	0	lua_newtable(luastate);
252
253	0	lua_pushstring(luastate, "length");
254	0	lua_pushinteger(luastate, cert->cert_len);
255	0	lua_settable(luastate, -3);
256
257	0	lua_pushstring(luastate, "data");
258	0	LuaPushStringBuffer(luastate, cert->cert_data, cert->cert_len);
259
260	0	lua_settable(luastate, -3);
261	0	lua_settable(luastate, -3);
262	0	}
263
264	0	return 1;
265	0	}
266
267		static int LuaTlsGetServerCertChain(lua_State *luastate)
268	0	{
269	0	return GetCertChain(luastate, false);
270	0	}
271
272		static int LuaTlsGetClientCertChain(lua_State *luastate)
273	0	{
274	0	return GetCertChain(luastate, true);
275	0	}
276
277		static int GetCertSerial(lua_State *luastate, bool client)
278	0	{
279	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
280	0	if (s->state == NULL) {
281	0	LUA_ERROR("failed to get flow");
282	0	}
283
284	0	const SSLStateConnp *connp;
285
286	0	if (client) {
287	0	connp = &s->state->client_connp;
288	0	} else {
289	0	connp = &s->state->server_connp;
290	0	}
291	0	if (connp->cert0_serial == NULL)
292	0	return LuaCallbackError(luastate, "error: no certificate serial");
293
294	0	return LuaPushStringBuffer(luastate, connp->cert0_serial, connp->cert0_serial_len);
295	0	}
296
297		static int LuaTlsGetServerCertSerial(lua_State *luastate)
298	0	{
299	0	return GetCertSerial(luastate, false);
300	0	}
301
302		static int LuaTlsGetClientCertSerial(lua_State *luastate)
303	0	{
304	0	return GetCertSerial(luastate, true);
305	0	}
306
307		static int GetAgreedVersion(lua_State *luastate, bool client)
308	0	{
309	0	struct LuaTls s = (struct LuaTls )luaL_checkudata(luastate, 1, tls_state_mt);
310	0	if (s->state == NULL) {
311	0	LUA_ERROR("failed to get state");
312	0	}
313
314	0	uint16_t version;
315	0	if (client) {
316	0	version = s->state->client_connp.version;
317	0	} else {
318	0	version = s->state->server_connp.version;
319	0	}
320
321	0	char ssl_version[SSL_VERSION_MAX_STRLEN];
322	0	SSLVersionToString(version, ssl_version);
323
324	0	lua_pushstring(luastate, (const char *)&ssl_version);
325	0	return 1;
326	0	}
327
328		static int LuaTlsGetServerVersion(lua_State *luastate)
329	0	{
330	0	return GetAgreedVersion(luastate, false);
331	0	}
332
333		static int LuaTlsGetClientVersion(lua_State *luastate)
334	0	{
335	0	return GetAgreedVersion(luastate, true);
336	0	}
337
338		static const struct luaL_Reg tlslib_meta[] = {
339		// clang-format off
340		{ "get_server_cert_not_before", LuaTlsGetServerCertNotBefore },
341		{ "get_client_cert_not_before", LuaTlsGetClientCertNotBefore },
342		{ "get_server_cert_not_after", LuaTlsGetServerCertNotAfter },
343		{ "get_client_cert_not_after", LuaTlsGetClientCertNotAfter },
344		{ "get_server_version", LuaTlsGetServerVersion },
345		{ "get_client_version", LuaTlsGetClientVersion },
346		{ "get_server_serial", LuaTlsGetServerCertSerial },
347		{ "get_client_serial", LuaTlsGetClientCertSerial },
348		{ "get_server_cert_info", LuaTlsGetServerCertInfo },
349		{ "get_client_cert_info", LuaTlsGetClientCertInfo },
350		{ "get_client_sni", LuaTlsGetSNI },
351		{ "get_client_cert_chain", LuaTlsGetClientCertChain },
352		{ "get_server_cert_chain", LuaTlsGetServerCertChain },
353		{ NULL, NULL, }
354		// clang-format off
355		};
356
357		static const struct luaL_Reg tlslib[] = {
358		// clang-format off
359		{ "get_tx", LuaTlsFlowStateGet },
360		{ NULL, NULL, },
361		// clang-format on
362		};
363
364		int SCLuaLoadTlsLib(lua_State *L)
365	0	{
366	0	luaL_newmetatable(L, tls_state_mt);
367	0	lua_pushvalue(L, -1);
368	0	lua_setfield(L, -2, "__index");
369	0	luaL_setfuncs(L, tlslib_meta, 0);
370
371	0	luaL_newlib(L, tlslib);
372	0	return 1;
373	0	}