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lib/flua/libifconfig/lua_ifconfig.c

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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020, Ryan Moeller <freqlabs@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_bridgevar.h>
#include <net/if_dl.h>
#include <net/ieee8023ad_lacp.h>
#include <net/if_lagg.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/ip_carp.h>
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#include <assert.h>
#include <errno.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysdecode.h>
#include <sysexits.h>
#include <libifconfig.h>
#include <libifconfig_sfp.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#define IFCONFIG_HANDLE_META "ifconfig_handle_t"
#define STRUCT_IFADDRS_META "struct ifaddrs *"
#define SFP_DUMP_META "struct ifconfig_sfp_dump"
#define IFFBITS \
"\020" \
"\001UP" \
"\002BROADCAST" \
"\003DEBUG" \
"\004LOOPBACK" \
"\005POINTOPOINT" \
"\007RUNNING" \
"\010NOARP" \
"\011PROMISC" \
"\012ALLMULTI" \
"\013OACTIVE" \
"\014SIMPLEX" \
"\015LINK0" \
"\016LINK1" \
"\017LINK2" \
"\020MULTICAST" \
"\022PPROMISC" \
"\023MONITOR" \
"\024STATICARP"
#define IFCAPBITS \
"\020" \
"\001RXCSUM" \
"\002TXCSUM" \
"\003NETCONS" \
"\004VLAN_MTU" \
"\005VLAN_HWTAGGING" \
"\006JUMBO_MTU" \
"\007POLLING" \
"\010VLAN_HWCSUM" \
"\011TSO4" \
"\012TSO6" \
"\013LRO" \
"\014WOL_UCAST" \
"\015WOL_MCAST" \
"\016WOL_MAGIC" \
"\017TOE4" \
"\020TOE6" \
"\021VLAN_HWFILTER" \
"\023VLAN_HWTSO" \
"\024LINKSTATE" \
"\025NETMAP" \
"\026RXCSUM_IPV6" \
"\027TXCSUM_IPV6" \
"\031TXRTLMT" \
"\032HWRXTSTMP" \
"\033NOMAP" \
"\034TXTLS4" \
"\035TXTLS6"
#define IN6BITS \
"\020" \
"\001anycast" \
"\002tenative" \
"\003duplicated" \
"\004detached" \
"\005deprecated" \
"\007nodad" \
"\010autoconf" \
"\011temporary" \
"\012prefer_source"
#define ND6BITS \
"\020" \
"\001nud" \
"\002accept_rtadv" \
"\003prefer_source" \
"\004ifdisabled" \
"\005dont_set_ifroute" \
"\006auto_linklocal" \
"\007no_radr" \
"\010no_prefer_iface" \
"\011no_dad" \
"\012ipv6_only" \
"\013ipv6_only"
#define LAGGHASHBITS \
"\020" \
"\001l2" \
"\002l3" \
"\003l4"
static const char *carp_states[] = { CARP_STATES };
static const struct lagg_protos lagg_protos[] = LAGG_PROTOS;
static const char *stp_states[] = { STP_STATES };
static const char *stp_protos[] = { STP_PROTOS };
static const char *stp_roles[] = { STP_ROLES };
int luaopen_ifconfig(lua_State *);
/*
* Create an array of the set flags in v, using the kernel %b format bits.
*/
static void
push_flags_array(lua_State *L, unsigned v, const char *bits)
{
int i, len;
lua_newtable(L);
/* Skip numeric format. */
++bits;
while ((i = *bits++) != '\0') {
if ((v & (1 << (i - 1))) != 0) {
for (len = 0; bits[len] > 32; ++len);
lua_pushlstring(L, bits, len);
lua_rawseti(L, -2, i);
bits += len;
} else {
for (; *bits > 32; ++bits);
}
}
}
/*
* Decode an array of the flags to set and return as an int.
*/
static int
pop_flags_array(lua_State *L, int index, const char *bits)
{
int v = 0;
/* Skip numeric format. */
++bits;
lua_pushnil(L); /* first key */
while (lua_next(L, index) != 0) {
const char *flag, *flags = bits;
int i, len;
luaL_checkstring(L, index + 2);
flag = lua_tostring(L, index + 2);
lua_pop(L, 1);
while ((i = *flags++) != '\0') {
for (len = 0; flags[len] > 32; ++len);
if (strncmp(flag, flags, len) == 0) {
v |= 1 << (i - 1);
break;
}
flags += len;
}
}
return (v);
}
/*
* Push a table describing media information.
*/
static void
push_media_info(lua_State *L, int ifmw)
{
char opts[80];
int index;
lua_newtable(L);
index = lua_gettop(L);
lua_pushstring(L, ifconfig_media_get_type(ifmw));
lua_setfield(L, index, "type");
lua_pushstring(L, ifconfig_media_get_subtype(ifmw));
lua_setfield(L, index, "subtype");
ifconfig_media_get_options_string(ifmw, opts, sizeof opts);
lua_pushstring(L, opts);
lua_setfield(L, index, "options");
}
/*
* Push a table describing an AF_INET address or nil if error.
*/
static void
push_inet4_addrinfo(lua_State *L, ifconfig_handle_t *h, struct ifaddrs *ifa)
{
char addr_buf[NI_MAXHOST];
struct ifconfig_inet_addr addr;
int index;
if (ifconfig_inet_get_addrinfo(h, ifa->ifa_name, ifa, &addr) != 0) {
lua_pushnil(L);
return;
}
lua_newtable(L);
index = lua_gettop(L);
/* TODO: can this just be inet_ntoa? */
inet_ntop(AF_INET, &addr.sin->sin_addr, addr_buf, sizeof addr_buf);
lua_pushstring(L, addr_buf);
lua_setfield(L, index, "inet");
if (addr.dst != NULL) {
lua_pushstring(L, inet_ntoa_r(addr.dst->sin_addr, addr_buf,
sizeof addr_buf));
lua_setfield(L, index, "destination");
}
lua_pushstring(L, inet_ntoa_r(addr.netmask->sin_addr, addr_buf,
sizeof addr_buf));
lua_setfield(L, index, "netmask");
if (addr.broadcast != NULL) {
lua_pushstring(L, inet_ntoa_r(addr.broadcast->sin_addr,
addr_buf, sizeof addr_buf));
lua_setfield(L, index, "broadcast");
}
if (addr.vhid != 0) {
lua_pushinteger(L, addr.vhid);
lua_setfield(L, index, "vhid");
}
}
/*
* Push a table describing an AF_INET6 address or nil if error.
*/
static void
push_inet6_addrinfo(lua_State *L, ifconfig_handle_t *h, struct ifaddrs *ifa)
{
char addr_buf[NI_MAXHOST];
struct ifconfig_inet6_addr addr;
struct timespec now;
int index;
if (ifconfig_inet6_get_addrinfo(h, ifa->ifa_name, ifa, &addr) != 0) {
lua_pushnil(L);
return;
}
lua_newtable(L);
index = lua_gettop(L);
if (getnameinfo((struct sockaddr *)addr.sin6, addr.sin6->sin6_len,
addr_buf, sizeof addr_buf, NULL, 0, NI_NUMERICHOST) != 0)
/* TODO: can this just be inet_ntoa? */
inet_ntop(AF_INET6, &addr.sin6->sin6_addr, addr_buf,
sizeof addr_buf);
lua_pushstring(L, addr_buf);
lua_setfield(L, index, "inet6");
if (addr.dstin6 != NULL) {
inet_ntop(AF_INET6, addr.dstin6, addr_buf, sizeof addr_buf);
lua_pushstring(L, addr_buf);
lua_setfield(L, index, "destination");
}
lua_pushinteger(L, addr.prefixlen);
lua_setfield(L, index, "prefixlen");
if (addr.sin6->sin6_scope_id != 0) {
lua_pushinteger(L, addr.sin6->sin6_scope_id);
lua_setfield(L, index, "scopeid");
}
push_flags_array(L, addr.flags, IN6BITS);
lua_setfield(L, index, "flags");
clock_gettime(CLOCK_MONOTONIC_FAST, &now);
if (addr.lifetime.ia6t_preferred || addr.lifetime.ia6t_expire) {
lua_pushinteger(L, MAX(0l,
addr.lifetime.ia6t_preferred - now.tv_sec));
lua_setfield(L, index, "preferred_lifetime");
lua_pushinteger(L, MAX(0l,
addr.lifetime.ia6t_expire - now.tv_sec));
lua_setfield(L, index, "valid_lifetime");
}
if (addr.vhid != 0) {
lua_pushinteger(L, addr.vhid);
lua_setfield(L, index, "vhid");
}
}
/*
* Push a table describing an AF_LINK address or nil if error.
*/
static void
push_link_addrinfo(lua_State *L, ifconfig_handle_t *h __unused,
struct ifaddrs *ifa)
{
char addr_buf[NI_MAXHOST];
union {
struct sockaddr *a;
struct sockaddr_dl *dl;
} s;
int index, n;
s.a = ifa->ifa_addr;
if (s.dl == NULL || s.dl->sdl_alen <= 0) {
lua_pushnil(L);
return;
}
lua_newtable(L);
index = lua_gettop(L);
switch (s.dl->sdl_type) {
case IFT_ETHER:
case IFT_L2VLAN:
case IFT_BRIDGE:
if (s.dl->sdl_alen != ETHER_ADDR_LEN)
break;
ether_ntoa_r((struct ether_addr *)LLADDR(s.dl), addr_buf);
lua_pushstring(L, addr_buf);
lua_setfield(L, index, "ether");
break;
default:
n = s.dl->sdl_nlen > 0 ? s.dl->sdl_nlen + 1 : 0;
lua_pushstring(L, link_ntoa(s.dl) + n); /* FIXME: link_ntoa_r */
lua_setfield(L, index, "lladdr");
break;
}
}
/*
* Push a table describing an AF_LOCAL address.
*/
static void
push_local_addrinfo(lua_State *L, ifconfig_handle_t *h __unused,
struct ifaddrs *ifa)
{
union {
struct sockaddr *a;
struct sockaddr_un *un;
} s;
int index;
lua_newtable(L);
index = lua_gettop(L);
s.a = ifa->ifa_addr;
if (strlen(s.un->sun_path) == 0)
lua_pushstring(L, "-");
else
lua_pushstring(L, s.un->sun_path);
lua_setfield(L, index, "path");
}
/*
* Push a table describing SFP channel power.
*/
static void
push_channel_power(lua_State *L, uint16_t power)
{
int index;
lua_newtable(L);
index = lua_gettop(L);
lua_pushinteger(L, power);
lua_setfield(L, index, "value");
lua_pushnumber(L, power_mW(power));
lua_setfield(L, index, "mW");
lua_pushnumber(L, power_dBm(power));
lua_setfield(L, index, "dBm");
}
/*
* Push a table describing SFP channel bias current.
*/
static void
push_channel_bias(lua_State *L, uint16_t bias)
{
int index;
lua_newtable(L);
index = lua_gettop(L);
lua_pushinteger(L, bias);
lua_setfield(L, index, "raw");
lua_pushnumber(L, bias_mA(bias));
lua_setfield(L, index, "mA");
}
/*
* Check the stack for an ifconfig handle userdata at the given index.
*/
static ifconfig_handle_t *
l_ifconfig_checkhandle(lua_State *L, int index)
{
ifconfig_handle_t *h, **hp;
hp = luaL_checkudata(L, index, IFCONFIG_HANDLE_META);
assert(hp != NULL);
h = *hp;
luaL_argcheck(L, h != NULL, index, "invalid ifconfig handle");
return (h);
}
/*
* Check the stack for an ifaddrs userdata at the given index.
*/
static struct ifaddrs *
l_ifconfig_checkifaddrs(lua_State *L, int index)
{
struct ifaddrs *ifa, **ifap;
ifap = luaL_checkudata(L, index, STRUCT_IFADDRS_META);
assert(ifap != NULL);
ifa = *ifap;
luaL_argcheck(L, ifa != NULL, index, "invalid ifaddr");
return (ifa);
}
/*
* Invoke a callback function on the stack with the handle and accumulator
* from the stack and the given ifaddrs, leaving the handle, callback, and
* accumulator result on the stack after the call.
*
* This is used by the ifconfig_foreach_* functions to invoke a lua callback.
*/
static void
foreach_cb(ifconfig_handle_t *h __unused, struct ifaddrs *ifa, void *udata)
{
lua_State *L = udata;
struct ifaddrs **ifap;
/* Stack: h,cb,acc */
/* Make copies of the callback and handle positioned for the call. */
lua_pushvalue(L, 1); /* -> h,cb,acc,h */
lua_pushvalue(L, 2); /* -> h,cb,acc,h,cb */
lua_insert(L, 3); /* -> h,cb,cb,acc,h */
lua_insert(L, 4); /* -> h,cb,cb,h,acc */
/* Push the ifa userdata. */
ifap = lua_newuserdata(L, sizeof ifa); /* -> h,cb,cb,h,acc,ifa */
assert(ifap != NULL);
*ifap = ifa;
luaL_getmetatable(L, STRUCT_IFADDRS_META);
lua_setmetatable(L, -2);
/* Reposition the accumulator to be last so it can be optional. */
lua_insert(L, 5); /* -> h,cb,cb,h,ifa,acc */
/* Invoke the callback. */
lua_call(L, 3, 1); /* -> h,cb,acc */
}
/** Explicit close method
*/
static int
l_ifconfig_handle_close(lua_State *L)
{
ifconfig_handle_t *h, **hp;
hp = luaL_checkudata(L, 1, IFCONFIG_HANDLE_META);
assert(hp != NULL);
h = *hp;
if (h != NULL) {
ifconfig_close(h);
*hp = NULL;
}
return (0);
}
/** Get error info
* @return errtype, errno, ioctlname?
*/
static int
l_ifconfig_handle_error(lua_State *L)
{
ifconfig_handle_t *h;
ifconfig_errtype errtype;
h = l_ifconfig_checkhandle(L, 1);
errtype = ifconfig_err_errtype(h);
switch (errtype) {
case OK:
lua_pushnil(L);
return (1);
case OTHER:
lua_pushstring(L, "OTHER");
break;
case IOCTL:
lua_pushstring(L, "IOCTL");
break;
case SOCKET:
lua_pushstring(L, "SOCKET");
break;
default:
lua_pushstring(L, "<unknown>");
break;
}
lua_pushinteger(L, ifconfig_err_errno(h));
if (errtype == IOCTL) {
unsigned long req = ifconfig_err_ioctlreq(h);
lua_pushstring(L, sysdecode_ioctlname(req));
return (3);
}
return (2);
}
/** Higher-order fold iterator over interfaces
* @param cb A callback function (handle, iface, udata) -> udata
* @param udata An initial accumulator value (may be nil)
* @return The final accumulator value returned by cb
*/
static int
l_ifconfig_foreach_iface(lua_State *L)
{
const int MAXARGS = 3;
ifconfig_handle_t *h;
int n;
h = l_ifconfig_checkhandle(L, 1);
luaL_checktype(L, 2, LUA_TFUNCTION);
/* Ensure the correct number of args. Extras are discarded. */
n = lua_gettop(L);
if (n == (MAXARGS - 1))
lua_pushnil(L);
else if (n > MAXARGS)
lua_pop(L, n - MAXARGS);
if (ifconfig_foreach_iface(h, foreach_cb, L) != 0)
return luaL_error(L, "iteration failed");
return (1);
}
/** Higher-order fold iterator over interface addresses
* @param iface A STRUCT_IFADDRS_META userdata value from foreach_iface
* @param cb A callback function (handle, ifaddr, udata) -> udata
* @param udata An initial accumulator value (may be nil)
* @return The final accumulator value returned by cb
*/
static int
l_ifconfig_foreach_ifaddr(lua_State *L)
{
const int MAXARGS = 4;
ifconfig_handle_t *h;
struct ifaddrs *ifa;
int n;
h = l_ifconfig_checkhandle(L, 1);
ifa = l_ifconfig_checkifaddrs(L, 2);
luaL_checktype(L, 3, LUA_TFUNCTION);
/* Ensure the correct number of args. Extras are discarded. */
n = lua_gettop(L);
if (n == (MAXARGS - 1))
lua_pushnil(L);
else if (n > MAXARGS)
lua_pop(L, n - MAXARGS);
lua_remove(L, 2);
ifconfig_foreach_ifaddr(h, ifa, foreach_cb, L);
return (1);
}
/** Get interface description
* @param name The name of an interface
* @return Description string if set, otherwise nil
*/
static int
l_ifconfig_get_description(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
char *desc;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_description(h, name, &desc) != 0)
lua_pushnil(L);
else
lua_pushstring(L, desc);
return (1);
}
/** Set interface description
* @param name The name of an interface
* @param desc Description string to set
* @return true if success, false if error
*/
static int
l_ifconfig_set_description(lua_State *L)
{
ifconfig_handle_t *h;
const char *name, *desc;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkstring(L, 3);
name = lua_tostring(L, 2);
desc = lua_tostring(L, 3);
if (ifconfig_set_description(h, name, desc) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Unset interface description
* @param name The name of an interface
* @return true if success, false if error
*/
static int
l_ifconfig_unset_description(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_unset_description(h, name) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Set interface name
* @param name The name of an interface
* @param newname A new name for the interface
* @return true if success, false if error
*/
static int
l_ifconfig_set_name(lua_State *L)
{
ifconfig_handle_t *h;
const char *name, *newname;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkstring(L, 3);
name = lua_tostring(L, 2);
newname = lua_tostring(L, 3);
if (ifconfig_set_name(h, name, newname) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Get original interface name
* @param name The name of an interface
* @return Original interface name or nil if error
*/
static int
l_ifconfig_get_orig_name(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
char *orig_name;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_orig_name(h, name, &orig_name) != 0)
lua_pushnil(L);
else
lua_pushstring(L, orig_name);
return (1);
}
#if 0 /* setfib not implemented in libifconfig? */
/** Set interface fib
* @param name The name of an interface
* @param fib A fib number to use
* @return true if success, false if error
*/
static int
l_ifconfig_set_fib(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
ptrdiff_t fib;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkinteger(L, 3);
name = lua_tostring(L, 2);
fib = lua_tointeger(L, 3);
luaL_argcheck(L, INT_MAX < fib || fib < INT_MIN, 3, "fib out of range");
if (ifconfig_set_fib(h, name, fib) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
#endif
/** Get interface fib
* @param name The name of an interface
* @return fib of the interface or nil if error
*/
static int
l_ifconfig_get_fib(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
int fib;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_fib(h, name, &fib) != 0)
lua_pushnil(L);
else
lua_pushinteger(L, fib);
return (1);
}
/** Set interface mtu
* @param name The name of an interface
* @param mtu A mtu to use
* @return true if success, false if error
*/
static int
l_ifconfig_set_mtu(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
ptrdiff_t mtu;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkinteger(L, 3);
name = lua_tostring(L, 2);
mtu = lua_tointeger(L, 3);
luaL_argcheck(L, INT_MIN <= mtu && mtu <= INT_MAX, 3, "mtu out of range");
if (ifconfig_set_mtu(h, name, mtu) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Get interface mtu
* @param name The name of an interface
* @return mtu of the interface or nil if error
*/
static int
l_ifconfig_get_mtu(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
int mtu;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_mtu(h, name, &mtu) != 0)
lua_pushnil(L);
else
lua_pushinteger(L, mtu);
return (1);
}
/** Get interface nd6 info
* @param name The name of an interface
* @return An list of the enabled nd6 options or nil if error
*/
static int
l_ifconfig_get_nd6(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct in6_ndireq nd;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_nd6(h, name, &nd) != 0)
lua_pushnil(L);
else
push_flags_array(L, nd.ndi.flags, ND6BITS);
return (1);
}
/** Set interface metric
* @param name The name of an interface
* @param metric A metric to use
* @return true if success, false if error
*/
static int
l_ifconfig_set_metric(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
ptrdiff_t metric;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkinteger(L, 3);
name = lua_tostring(L, 2);
metric = lua_tointeger(L, 3);
luaL_argcheck(L, INT_MAX < metric || metric < INT_MIN, 3,
"metric out of range");
if (ifconfig_set_metric(h, name, metric) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Get interface metric
* @param name The name of an interface
* @return metric of the interface or nil if error
*/
static int
l_ifconfig_get_metric(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
int metric;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_metric(h, name, &metric) != 0)
lua_pushnil(L);
else
lua_pushinteger(L, metric);
return (1);
}
/** Set interface capabilities
* @param name The name of an interface
* @param caps An array of the capabilities to be enabled on the interface
* (capabilities not listed will be disabled)
* @return true if success, false if error
*/
static int
l_ifconfig_set_capabilities(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
int capability;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checktype(L, 3, LUA_TTABLE);
name = lua_tostring(L, 2);
capability = pop_flags_array(L, 3, IFCAPBITS);
if (ifconfig_set_capability(h, name, capability) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Get interface capabilities
* @param name The name of an interface
* @return A table of the enabled/supported capabilites or nil if error
*/
static int
l_ifconfig_get_capabilities(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_capabilities capability;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_capability(h, name, &capability) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
lua_pushstring(L, "enabled");
push_flags_array(L, capability.curcap, IFCAPBITS);
lua_rawset(L, 3);
lua_pushstring(L, "supported");
push_flags_array(L, capability.reqcap, IFCAPBITS);
lua_rawset(L, 3);
return (1);
}
/** Get interface groups list
* @param name The name of an interface
* @return A table of the groups containing the interface or nil if error
*/
static int
l_ifconfig_get_groups(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifgroupreq ifgr;
struct ifg_req *ifg;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_groups(h, name, &ifgr) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
for (ifg = ifgr.ifgr_groups;
ifg != NULL && ifgr.ifgr_len >= sizeof *ifg;
++ifg, ifgr.ifgr_len -= sizeof *ifg) {
if (strcmp(ifg->ifgrq_group, "all") == 0)
continue;
lua_pushstring(L, ifg->ifgrq_group);
lua_rawseti(L, 3, lua_rawlen(L, 3) + 1);
}
return (1);
}
/** Get interface status
* @param name The name of an interface
* @return Interface status as a string or nil if error
*/
static int
l_ifconfig_get_status(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifstat status;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_get_ifstatus(h, name, &status) != 0)
lua_pushnil(L);
else
lua_pushstring(L, status.ascii);
return (1);
}
/** Get interface media info
* @param name The name of an interface
* @return A table describing the interface media or nil if error
*/
static int
l_ifconfig_get_media(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifmediareq *ifmr;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_media_get_mediareq(h, name, &ifmr) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
push_media_info(L, ifmr->ifm_current);
lua_setfield(L, 3, "current");
push_media_info(L, ifmr->ifm_active);
lua_setfield(L, 3, "active");
lua_newtable(L);
for (int i = 0; i < ifmr->ifm_count; ++i) {
push_media_info(L, ifmr->ifm_ulist[i]);
lua_rawseti(L, 4, lua_rawlen(L, 4) + 1);
}
lua_setfield(L, 3, "supported");
lua_pushstring(L, ifconfig_media_get_status(ifmr));
lua_setfield(L, 3, "status");
free(ifmr);
return (1);
}
/** Get interface carp info
* @param name
* @return A table describing the interface carp vhids or nil if error
*/
static int
l_ifconfig_get_carp(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct carpreq carpr[CARP_MAXVHID];
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_carp_get_info(h, name, carpr, nitems(carpr)) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
for (int i = 0; i < carpr[0].carpr_count; ++i) {
lua_newtable(L);
lua_pushstring(L, carp_states[carpr[i].carpr_state]);
lua_setfield(L, 4, "state");
lua_pushinteger(L, carpr[i].carpr_vhid);
lua_setfield(L, 4, "vhid");
lua_pushinteger(L, carpr[i].carpr_advbase);
lua_setfield(L, 4, "advbase");
lua_pushinteger(L, carpr[i].carpr_advskew);
lua_setfield(L, 4, "advskew");
lua_rawseti(L, 3, lua_rawlen(L, 3) + 1);
}
return (1);
}
/** Get address info
* @param addr An ifaddrs userdata object
* @return Table describing the address or nil if error
*/
static int
l_ifconfig_addr_info(lua_State *L)
{
ifconfig_handle_t *h;
struct ifaddrs *ifa;
h = l_ifconfig_checkhandle(L, 1);
ifa = l_ifconfig_checkifaddrs(L, 2);
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
push_inet4_addrinfo(L, h, ifa);
break;
case AF_INET6:
push_inet6_addrinfo(L, h, ifa);
break;
case AF_LINK:
push_link_addrinfo(L, h, ifa);
break;
case AF_LOCAL:
push_local_addrinfo(L, h, ifa);
break;
case AF_UNSPEC:
default:
lua_pushnil(L);
break;
}
return (1);
}
/** Get bridge interface status
* @param name The name of a bridge interface
* @return Table describing the status of the bridge or nil if error
*/
static int
l_ifconfig_get_bridge_status(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_bridge_status *bridge;
struct ifbropreq *params;
struct ifbreq *member;
uint8_t lladdr[ETHER_ADDR_LEN];
char addr_buf[NI_MAXHOST];
int index;
uint16_t bprio;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_bridge_get_bridge_status(h, name, &bridge) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
index = lua_gettop(L);
lua_pushinteger(L, bridge->cache_size);
lua_setfield(L, index, "address_cache_size");
lua_pushinteger(L, bridge->cache_lifetime);
lua_setfield(L, index, "address_cache_lifetime");
params = bridge->params;
lua_pushinteger(L, params->ifbop_priority);
lua_setfield(L, index, "priority");
if (params->ifbop_protocol < nitems(stp_protos))
lua_pushstring(L, stp_protos[params->ifbop_protocol]);
else
lua_pushinteger(L, params->ifbop_protocol);
lua_setfield(L, index, "protocol");
lua_pushinteger(L, params->ifbop_hellotime);
lua_setfield(L, index, "hello_time");
lua_pushinteger(L, params->ifbop_fwddelay);
lua_setfield(L, index, "forward_delay");
lua_pushinteger(L, params->ifbop_holdcount);
lua_setfield(L, index, "hold_count");
lua_pushinteger(L, params->ifbop_maxage);
lua_setfield(L, index, "max_age");
PV2ID(params->ifbop_bridgeid, bprio, lladdr);
lua_pushstring(L, ether_ntoa_r((struct ether_addr *)lladdr, addr_buf));
lua_setfield(L, index, "id");
PV2ID(params->ifbop_designated_root, bprio, lladdr);
lua_pushstring(L, ether_ntoa_r((struct ether_addr *)lladdr, addr_buf));
lua_setfield(L, index, "root_id");
lua_pushinteger(L, bprio);
lua_setfield(L, index, "root_priority");
lua_pushinteger(L, params->ifbop_root_path_cost);
lua_setfield(L, index, "root_path_cost");
lua_pushinteger(L, params->ifbop_root_port & 0xfff);
lua_setfield(L, index, "root_port");
lua_newtable(L);
++index;
for (size_t i = 0; i < bridge->members_count; ++i) {
member = bridge->members + i;
lua_newtable(L);
++index;
push_flags_array(L, member->ifbr_ifsflags, IFBIFBITS);
lua_setfield(L, index, "flags");
lua_pushinteger(L, member->ifbr_addrmax);
lua_setfield(L, index, "ifmaxaddr");
lua_pushinteger(L, member->ifbr_portno);
lua_setfield(L, index, "port");
lua_pushinteger(L, member->ifbr_priority);
lua_setfield(L, index, "priority");
lua_pushinteger(L, member->ifbr_path_cost);
lua_setfield(L, index, "path_cost");
if (member->ifbr_ifsflags & IFBIF_STP) {
if (member->ifbr_proto < nitems(stp_protos))
lua_pushstring(L,
stp_protos[member->ifbr_proto]);
else
lua_pushinteger(L, member->ifbr_proto);
lua_setfield(L, index, "protocol");
if (member->ifbr_role < nitems(stp_roles))
lua_pushstring(L,
stp_roles[member->ifbr_role]);
else
lua_pushinteger(L, member->ifbr_role);
lua_setfield(L, index, "role");
if (member->ifbr_state < nitems(stp_states))
lua_pushstring(L,
stp_states[member->ifbr_state]);
else
lua_pushinteger(L, member->ifbr_state);
lua_setfield(L, index, "state");
}
--index;
lua_setfield(L, index, member->ifbr_ifsname);
}
--index;
lua_setfield(L, index, "members");
ifconfig_bridge_free_bridge_status(bridge);
return (1);
}
/** Get lagg interface status
* @param name The name of a lagg interface
* @return Table describing the status of the lagg or nil if error
*/
static int
l_ifconfig_get_lagg_status(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_lagg_status *lagg_status;
const char *protoname = "<unknown>";
int index;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_lagg_get_lagg_status(h, name, &lagg_status) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
index = lua_gettop(L);
for (size_t i = 0; i < nitems(lagg_protos); ++i) {
if (lagg_status->ra->ra_proto == lagg_protos[i].lpr_proto) {
protoname = lagg_protos[i].lpr_name;
break;
}
}
lua_pushstring(L, protoname);
lua_setfield(L, index, "laggproto");
push_flags_array(L, lagg_status->rf->rf_flags & LAGG_F_HASHMASK,
LAGGHASHBITS);
lua_setfield(L, index, "lagghash");
lua_newtable(L);
++index;
push_flags_array(L, lagg_status->ro->ro_opts, LAGG_OPT_BITS);
lua_setfield(L, index, "flags");
lua_pushinteger(L, lagg_status->ro->ro_flowid_shift);
lua_setfield(L, index, "flowid_shift");
if (lagg_status->ra->ra_proto == LAGG_PROTO_ROUNDROBIN) {
lua_pushinteger(L, lagg_status->ro->ro_bkt);
lua_setfield(L, index, "rr_limit");
}
--index;
lua_setfield(L, index, "options");
lua_newtable(L);
++index;
lua_pushinteger(L, lagg_status->ro->ro_active);
lua_setfield(L, index, "active");
lua_pushinteger(L, lagg_status->ro->ro_flapping);
lua_setfield(L, index, "flapping");
--index;
lua_setfield(L, index, "stats");
lua_newtable(L);
++index;
for (int i = 0; i < lagg_status->ra->ra_ports; ++i) {
struct lagg_reqport *lagg_port = &lagg_status->ra->ra_port[i];
lua_newtable(L);
++index;
lua_pushstring(L, lagg_port->rp_portname);
lua_setfield(L, index, "laggport");
push_flags_array(L, lagg_port->rp_flags, LAGG_PORT_BITS);
lua_setfield(L, index, "flags");
if (lagg_status->ra->ra_proto == LAGG_PROTO_LACP) {
struct lacp_opreq *lacp_port = (struct lacp_opreq *)
&lagg_port->rp_lacpreq;
push_flags_array(L, lacp_port->actor_state,
LACP_STATE_BITS);
lua_setfield(L, index, "lacp_state");
}
--index;
lua_rawseti(L, index, lua_rawlen(L, index) + 1);
}
--index;
lua_setfield(L, index, "ports");
ifconfig_lagg_free_lagg_status(lagg_status);
return (1);
}
/** Get the parent laggdev of a laggport interface
* @param name The name of a laggport interface
* @return Parent laggdev name or nil if error
*/
static int
l_ifconfig_get_laggport_laggdev(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct lagg_reqport lagg_port;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_lagg_get_laggport_status(h, name, &lagg_port) != 0)
lua_pushnil(L);
else
lua_pushstring(L, lagg_port.rp_ifname);
return (1);
}
/** Destroy an interface
* @param name The name of an interface
* @return true if success, false if error
*/
static int
l_ifconfig_destroy(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_destroy_interface(h, name) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Create an interface
* @param name The name of an interface
* @return Created interface name or nil if error
*/
static int
l_ifconfig_create(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
char *ifname;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_create_interface(h, name, &ifname) != 0)
lua_pushnil(L);
else
lua_pushstring(L, ifname);
return (1);
}
/** Create a vlan interface
* @param name The name of a vlan interface to create
* @param vlandev The name of an interface to attach to
* @param vlantag A vlan number to use
* @return The name of the created interface or nil if error
*/
static int
l_ifconfig_create_vlan(lua_State *L)
{
ifconfig_handle_t *h;
const char *name, *vlandev;
char *ifname;
ptrdiff_t vlantag;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkstring(L, 3);
luaL_checkinteger(L, 4);
name = lua_tostring(L, 2);
vlandev = lua_tostring(L, 3);
vlantag = lua_tointeger(L, 4);
luaL_argcheck(L, 0 <= vlantag && vlantag <= UINT16_MAX, 4,
"vlantag out of range");
if (ifconfig_create_interface_vlan(h, name, &ifname, vlandev, vlantag) != 0)
lua_pushnil(L);
else
lua_pushstring(L, ifname);
return (1);
}
/** Set vlandev and vlantag for a vlan interface
* @param name The name of a vlan interface
* @param vlandev The name of the interface to attach to
* @param vlantag A vlan number to use
* @return true if success, false if error
*/
static int
l_ifconfig_set_vlantag(lua_State *L)
{
ifconfig_handle_t *h;
const char *name, *vlandev;
ptrdiff_t vlantag;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
luaL_checkstring(L, 3);
luaL_checkinteger(L, 4);
name = lua_tostring(L, 2);
vlandev = lua_tostring(L, 3);
vlantag = lua_tointeger(L, 4);
luaL_argcheck(L, 0 <= vlantag && vlantag <= UINT16_MAX, 4,
"vlantag out of range");
if (ifconfig_set_vlantag(h, name, vlandev, vlantag) != 0)
lua_pushboolean(L, false);
else
lua_pushboolean(L, true);
return (1);
}
/** Get a list of all the interface cloners available on the system
* @return a list of the names of known interface cloners or nil if error
*/
static int
l_ifconfig_list_cloners(lua_State *L)
{
ifconfig_handle_t *h;
char *cloners;
size_t cloners_count;
h = l_ifconfig_checkhandle(L, 1);
if (ifconfig_list_cloners(h, &cloners, &cloners_count) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
for (size_t i = 0; i < cloners_count; ++i) {
const char *name = cloners + i * IFNAMSIZ;
lua_pushstring(L, name);
lua_rawseti(L, -2, i);
}
free(cloners);
return (1);
}
/** Get SFP module information
* @param name The name of an interface
* @return Table describing available info about an SFP module if present,
* or nil if no module present or an error occurred
*/
static int
l_ifconfig_get_sfp_info(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_sfp_info sfp;
struct ifconfig_sfp_info_strings strings;
int index;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_sfp_get_sfp_info(h, name, &sfp) != 0) {
lua_pushnil(L);
return (1);
}
ifconfig_sfp_get_sfp_info_strings(&sfp, &strings);
lua_newtable(L);
index = lua_gettop(L);
#define $(enu) \
if (sfp.sfp_##enu != 0) { \
lua_newtable(L); \
++index; \
lua_pushstring(L, ifconfig_enum_sfp_##enu##_description()); \
lua_setfield(L, index, "description"); \
lua_pushstring(L, strings.sfp_##enu); \
lua_setfield(L, index, "string"); \
lua_pushinteger(L, sfp.sfp_##enu); \
lua_setfield(L, index, "value"); \
--index; \
lua_setfield(L, index, "sfp_"#enu); \
}
$(id)
$(conn)
$(eth_10g)
$(eth)
$(fc_len)
$(cab_tech)
$(fc_media)
$(eth_1040g)
$(eth_ext)
$(rev)
#undef $
return (1);
}
/** Get SFP module vendor info
* @param name The name of an interface
* @return Table of vendor info or nil if error
*/
static int
l_ifconfig_get_sfp_vendor_info(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_sfp_vendor_info vendor;
int index;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_sfp_get_sfp_vendor_info(h, name, &vendor) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
index = lua_gettop(L);
lua_pushstring(L, vendor.name);
lua_setfield(L, index, "name");
lua_pushstring(L, vendor.pn);
lua_setfield(L, index, "part_number");
lua_pushstring(L, vendor.sn);
lua_setfield(L, index, "serial_number");
lua_pushstring(L, vendor.date);
lua_setfield(L, index, "date");
return (1);
}
/** Get SFP module status
* @param name The name of an interface
* @return Table describing module status if present
* or nil if no module or an error occurs
*/
static int
l_ifconfig_get_sfp_status(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_sfp_status status;
size_t channels = 1;
int index;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
name = lua_tostring(L, 2);
if (ifconfig_sfp_get_sfp_status(h, name, &status) != 0) {
lua_pushnil(L);
return (1);
}
lua_newtable(L);
index = lua_gettop(L);
if (-40.0 <= status.temp && status.temp <= 125.0) {
lua_pushnumber(L, status.temp);
lua_setfield(L, index, "temperature");
}
lua_pushnumber(L, status.voltage);
lua_setfield(L, index, "voltage");
if (status.bitrate != 0) {
lua_pushnumber(L, status.bitrate);
lua_setfield(L, index, "bitrate");
channels = 4;
}
lua_newtable(L);
++index;
for (size_t chan = 0; chan < channels; ++chan) {
lua_newtable(L);
++index;
push_channel_power(L, status.channel[chan].rx);
lua_setfield(L, index, "rx_power");
push_channel_bias(L, status.channel[chan].tx);
lua_setfield(L, index, "tx_bias");
--index;
lua_rawseti(L, index, chan + 1);
}
--index;
lua_setfield(L, index, "channels");
return (1);
}
/** Get SFP module I2C dump
* @param name The name of an interface
* @return A userdata blob with the dump or nil if error
*/
static int
l_ifconfig_get_sfp_dump(lua_State *L)
{
ifconfig_handle_t *h;
const char *name;
struct ifconfig_sfp_dump *dump;
h = l_ifconfig_checkhandle(L, 1);
luaL_checkstring(L, 2);
dump = lua_newuserdata(L, sizeof(*dump));
assert(dump != NULL);
luaL_getmetatable(L, SFP_DUMP_META);
lua_setmetatable(L, -2);
name = lua_tostring(L, 2);
if (ifconfig_sfp_get_sfp_dump(h, name, dump) != 0)
lua_pushnil(L);
return (1);
}
static const struct luaL_Reg l_ifconfig_handle[] = {
{"close", l_ifconfig_handle_close},
{"error", l_ifconfig_handle_error},
{"foreach_iface", l_ifconfig_foreach_iface},
{"foreach_ifaddr", l_ifconfig_foreach_ifaddr},
{"get_description", l_ifconfig_get_description},
{"set_description", l_ifconfig_set_description},
{"unset_description", l_ifconfig_unset_description},
{"set_name", l_ifconfig_set_name},
{"get_orig_name", l_ifconfig_get_orig_name},
#if 0 /* setfib not implemented in libifconfig? */
{"set_fib", l_ifconfig_set_fib},
#endif
{"get_fib", l_ifconfig_get_fib},
{"set_mtu", l_ifconfig_set_mtu},
{"get_mtu", l_ifconfig_get_mtu},
{"get_nd6", l_ifconfig_get_nd6},
{"set_metric", l_ifconfig_set_metric},
{"get_metric", l_ifconfig_get_metric},
{"set_capabilities", l_ifconfig_set_capabilities},
{"get_capabilities", l_ifconfig_get_capabilities},
{"get_groups", l_ifconfig_get_groups},
{"get_status", l_ifconfig_get_status},
{"get_media", l_ifconfig_get_media},
{"get_carp", l_ifconfig_get_carp},
{"addr_info", l_ifconfig_addr_info},
{"get_bridge_status", l_ifconfig_get_bridge_status},
{"get_lagg_status", l_ifconfig_get_lagg_status},
{"get_laggport_laggdev", l_ifconfig_get_laggport_laggdev},
{"destroy", l_ifconfig_destroy},
{"create", l_ifconfig_create},
{"create_vlan", l_ifconfig_create_vlan},
{"set_vlantag", l_ifconfig_set_vlantag},
{"list_cloners", l_ifconfig_list_cloners},
{"get_sfp_info", l_ifconfig_get_sfp_info},
{"get_sfp_vendor_info", l_ifconfig_get_sfp_vendor_info},
{"get_sfp_status", l_ifconfig_get_sfp_status},
{"get_sfp_dump", l_ifconfig_get_sfp_dump},
{NULL, NULL}
};
static void
l_ifconfig_handle_meta(lua_State *L)
{
luaL_newmetatable(L, IFCONFIG_HANDLE_META);
/* metatable.__index = metatable */
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
/* Automatically close handle when garbage collected. */
lua_pushcfunction(L, l_ifconfig_handle_close);
lua_setfield(L, -2, "__gc");
luaL_setfuncs(L, l_ifconfig_handle, 0);
lua_pop(L, 1);
}
/** Get interface name
* @return Name of the interface as a string
*/
static int
l_struct_ifaddrs_name(lua_State *L)
{
struct ifaddrs *ifa;
ifa = l_ifconfig_checkifaddrs(L, 1);
lua_pushstring(L, ifa->ifa_name);
return (1);
}
/** Get interface flags
* @return List of flags set on this interface
*/
static int
l_struct_ifaddrs_flags(lua_State *L)
{
struct ifaddrs *ifa;
ifa = l_ifconfig_checkifaddrs(L, 1);
push_flags_array(L, ifa->ifa_flags, IFFBITS);
return (1);
}
static const struct luaL_Reg l_struct_ifaddrs[] = {
{"name", l_struct_ifaddrs_name},
{"flags", l_struct_ifaddrs_flags},
{NULL, NULL}
};
static void
l_struct_ifaddrs_meta(lua_State *L)
{
luaL_newmetatable(L, STRUCT_IFADDRS_META);
/* metatable.__index = metatable */
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
luaL_setfuncs(L, l_struct_ifaddrs, 0);
lua_pop(L, 1);
}
static size_t
hex_dump(char *dst, const uint8_t *src, size_t len)
{
const size_t LINE_BYTES = 16;
char *p = dst;
for (size_t i = 0; i < len; ++i) {
char sep;
if (i == (len - 1))
sep = '\n';
else if (((i + 1) % LINE_BYTES) != 0)
sep = ' ';
else
sep = '\n';
p += sprintf(p, "%02X%c", src[i], sep);
}
return (p - dst);
}
static int
l_sfp_dump_tostring(lua_State *L)
{
struct ifconfig_sfp_dump *dump;
char *p, *buf;
dump = luaL_checkudata(L, 1, SFP_DUMP_META);
assert(dump != NULL);
p = buf = malloc(SFF_DUMP_SIZE * 4); /* should be sufficiently large */
assert(p != NULL);
memset(p, 0, sizeof(buf));
switch (ifconfig_sfp_dump_region_count(dump)) {
case 2:
p += sprintf(p, "SFF8436 DUMP (0xA0 0..81 range):\n");
p += hex_dump(p, dump->data + QSFP_DUMP0_START,
QSFP_DUMP0_SIZE);
p += sprintf(p, "SFF8436 DUMP (0xA0 128..255 range):\n");
p += hex_dump(p, dump->data + QSFP_DUMP1_START,
QSFP_DUMP1_SIZE);
break;
case 1:
p += sprintf(p, "SFF8472 DUMP (0xA0 0..127 range):\n");
p += hex_dump(p, dump->data + SFP_DUMP_START, SFP_DUMP_SIZE);
break;
default:
p += sprintf(p, "UNIDENTIFIED DUMP (0xA0 0..255 range):\n");
p += hex_dump(p, dump->data, sizeof(dump->data));
break;
}
lua_pushstring(L, buf);
free(buf);
return (1);
}
static const struct luaL_Reg l_sfp_dump[] = {
{"__tostring", l_sfp_dump_tostring},
{NULL, NULL}
};
static void
l_sfp_dump_meta(lua_State *L)
{
luaL_newmetatable(L, SFP_DUMP_META);
/* metatable.__index = metatable */
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
luaL_setfuncs(L, l_sfp_dump, 0);
lua_pop(L, 1);
}
static int
l_ifconfig_open(lua_State *L)
{
ifconfig_handle_t *h, **hp;
if ((h = ifconfig_open()) == NULL) {
lua_pushnil(L);
return (1);
}
hp = lua_newuserdata(L, sizeof h);
assert(hp != NULL);
*hp = h;
luaL_getmetatable(L, IFCONFIG_HANDLE_META);
lua_setmetatable(L, -2);
return (1);
}
static const struct luaL_Reg l_ifconfig[] = {
{"open", l_ifconfig_open},
{NULL, NULL}
};
int
luaopen_ifconfig(lua_State *L)
{
l_ifconfig_handle_meta(L);
l_struct_ifaddrs_meta(L);
l_sfp_dump_meta(L);
lua_newtable(L);
luaL_setfuncs(L, l_ifconfig, 0);
return (1);
}