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merged 2 commits into from
Oct 22, 2025
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lua: minimal support for Unix socket incoming connections #12510

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f871528
lua: minimal support for Unix socket incoming connections.
vuori Sep 15, 2025
d2b4007
lua: check address family value for server_request calls.
vuori Oct 21, 2025
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1 change: 1 addition & 0 deletions doc/admin-guide/plugins/lua.en.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1838,6 +1838,7 @@ Socket address family

TS_LUA_AF_INET (2)
TS_LUA_AF_INET6 (10)
TS_LUA_AF_UNIX (1)
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I think these variables are really used when we are making changes to the outgoing address. So there is no need to support AF_UNIX here



:ref:`TOP <admin-plugins-ts-lua>`
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10 changes: 6 additions & 4 deletions plugins/lua/ts_lua_client_request.cc
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Expand Up @@ -790,7 +790,7 @@ ts_lua_client_request_client_addr_get_port(lua_State *L)
{
struct sockaddr const *client_ip;
ts_lua_http_ctx *http_ctx;
int port;
int port = 0;

GET_HTTP_CONTEXT(http_ctx, L);

Expand All @@ -802,7 +802,7 @@ ts_lua_client_request_client_addr_get_port(lua_State *L)
} else {
if (client_ip->sa_family == AF_INET) {
port = ((struct sockaddr_in *)client_ip)->sin_port;
} else {
} else if (client_ip->sa_family == AF_INET6) {
port = ((struct sockaddr_in6 *)client_ip)->sin6_port;
}

Expand All @@ -817,7 +817,7 @@ ts_lua_client_request_client_addr_get_incoming_port(lua_State *L)
{
struct sockaddr const *incoming_addr;
ts_lua_http_ctx *http_ctx;
int port;
int port = 0;

GET_HTTP_CONTEXT(http_ctx, L);

Expand All @@ -829,7 +829,7 @@ ts_lua_client_request_client_addr_get_incoming_port(lua_State *L)
} else {
if (incoming_addr->sa_family == AF_INET) {
port = ((struct sockaddr_in *)incoming_addr)->sin_port;
} else {
} else if (incoming_addr->sa_family == AF_INET6) {
port = ((struct sockaddr_in6 *)incoming_addr)->sin6_port;
}

Expand Down Expand Up @@ -866,6 +866,8 @@ ts_lua_client_request_client_addr_get_addr(lua_State *L)
port = ntohs(((struct sockaddr_in6 *)client_ip)->sin6_port);
inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)client_ip)->sin6_addr, cip, sizeof(cip));
family = AF_INET6;
} else if (client_ip->sa_family == AF_UNIX) {
family = AF_UNIX;
}

lua_pushstring(L, cip);
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2 changes: 2 additions & 0 deletions plugins/lua/ts_lua_http.cc
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Expand Up @@ -1085,6 +1085,8 @@ ts_lua_http_get_ssn_remote_addr(lua_State *L)
port = ntohs(((struct sockaddr_in6 *)client_ip)->sin6_port);
inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)client_ip)->sin6_addr, cip, sizeof(cip));
family = AF_INET6;
} else if (client_ip->sa_family == AF_UNIX) {
family = AF_UNIX;
}

lua_pushstring(L, cip);
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29 changes: 22 additions & 7 deletions plugins/lua/ts_lua_server_request.cc
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Expand Up @@ -149,6 +149,9 @@ ts_lua_inject_server_request_server_addr_api(lua_State *L)

lua_pushinteger(L, AF_INET6);
lua_setglobal(L, "TS_LUA_AF_INET6");

lua_pushinteger(L, AF_UNIX);
lua_setglobal(L, "TS_LUA_AF_UNIX");
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I think these variables are really used when we are making changes to the outgoing address. So there is no need to support AF_UNIX here

}

static void
Expand Down Expand Up @@ -768,7 +771,11 @@ ts_lua_server_request_server_addr_get_ip(lua_State *L)
inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)server_ip)->sin6_addr, sip, sizeof(sip));
}

lua_pushstring(L, sip);
if (sip[0] == '\0') {
lua_pushnil(L);
} else {
lua_pushstring(L, sip);
}
}

return 1;
Expand All @@ -779,7 +786,7 @@ ts_lua_server_request_server_addr_get_port(lua_State *L)
{
struct sockaddr const *server_ip;
ts_lua_http_ctx *http_ctx;
int port;
int port = 0;

GET_HTTP_CONTEXT(http_ctx, L);

Expand All @@ -791,7 +798,7 @@ ts_lua_server_request_server_addr_get_port(lua_State *L)
} else {
if (server_ip->sa_family == AF_INET) {
port = ((struct sockaddr_in *)server_ip)->sin_port;
} else {
} else if (server_ip->sa_family == AF_INET6) {
port = ((struct sockaddr_in6 *)server_ip)->sin6_port;
}

Expand All @@ -806,7 +813,7 @@ ts_lua_server_request_server_addr_get_outgoing_port(lua_State *L)
{
struct sockaddr const *outgoing_addr;
ts_lua_http_ctx *http_ctx;
int port;
int port = 0;

GET_HTTP_CONTEXT(http_ctx, L);

Expand All @@ -818,7 +825,7 @@ ts_lua_server_request_server_addr_get_outgoing_port(lua_State *L)
} else {
if (outgoing_addr->sa_family == AF_INET) {
port = ((struct sockaddr_in *)outgoing_addr)->sin_port;
} else {
} else if (outgoing_addr->sa_family == AF_INET6) {
port = ((struct sockaddr_in6 *)outgoing_addr)->sin6_port;
}

Expand Down Expand Up @@ -855,6 +862,8 @@ ts_lua_server_request_server_addr_get_addr(lua_State *L)
port = ntohs(((struct sockaddr_in6 *)server_ip)->sin6_port);
inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)server_ip)->sin6_addr, sip, sizeof(sip));
family = AF_INET6;
} else if (server_ip->sa_family == AF_UNIX) {
family = AF_UNIX;
}

lua_pushstring(L, sip);
Expand Down Expand Up @@ -892,6 +901,8 @@ ts_lua_server_request_server_addr_get_nexthop_addr(lua_State *L)
port = ntohs(((struct sockaddr_in6 *)server_ip)->sin6_port);
inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)server_ip)->sin6_addr, sip, sizeof(sip));
family = AF_INET6;
} else if (server_ip->sa_family == AF_UNIX) {
family = AF_UNIX;
}

lua_pushstring(L, sip);
Expand Down Expand Up @@ -963,12 +974,14 @@ ts_lua_server_request_server_addr_set_addr(lua_State *L)
if (!inet_pton(family, sip, &addr.sin4.sin_addr)) {
return luaL_error(L, "invalid ipv4 address");
}
} else {
} else if (family == AF_INET6) {
addr.sin6.sin6_family = AF_INET6;
addr.sin6.sin6_port = htons(port);
if (!inet_pton(family, sip, &addr.sin6.sin6_addr)) {
return luaL_error(L, "invalid ipv6 address");
}
} else {
return luaL_error(L, "invalid address family");
}

TSHttpTxnServerAddrSet(http_ctx->txnp, &addr.sa);
Expand Down Expand Up @@ -1009,12 +1022,14 @@ ts_lua_server_request_server_addr_set_outgoing_addr(lua_State *L)
if (!inet_pton(family, sip, &addr.sin4.sin_addr)) {
return luaL_error(L, "invalid ipv4 address");
}
} else {
} else if (family == AF_INET6) {
addr.sin6.sin6_family = AF_INET6;
addr.sin6.sin6_port = htons(port);
if (!inet_pton(family, sip, &addr.sin6.sin6_addr)) {
return luaL_error(L, "invalid ipv6 address");
}
} else {
return luaL_error(L, "invalid address family");
}

TSHttpTxnOutgoingAddrSet(http_ctx->txnp, &addr.sa);
Expand Down
10 changes: 6 additions & 4 deletions plugins/lua/ts_lua_vconn.cc
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Expand Up @@ -56,9 +56,9 @@ static int
ts_lua_vconn_get_remote_addr(lua_State *L)
{
ts_lua_vconn_ctx *vconn_ctx;
int port;
int family;
char sip[128];
int port = 0;
int family = AF_UNSPEC;
char sip[128] = "";

GET_VCONN_CONTEXT(vconn_ctx, L);

Expand All @@ -73,10 +73,12 @@ ts_lua_vconn_get_remote_addr(lua_State *L)
port = ntohs(((struct sockaddr_in *)addr)->sin_port);
inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)addr)->sin_addr, sip, sizeof(sip));
family = AF_INET;
} else {
} else if (addr->sa_family == AF_INET6) {
port = ntohs(((struct sockaddr_in6 *)addr)->sin6_port);
inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)addr)->sin6_addr, sip, sizeof(sip));
family = AF_INET6;
} else if (addr->sa_family == AF_UNIX) {
family = AF_UNIX;
}

lua_pushstring(L, sip);
Expand Down