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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "NetUtils.h"
#include <dlfcn.h>
#include <errno.h>
#include "prinit.h"
#include "mozilla/Assertions.h"
#include "nsDebug.h"
#include "SystemProperty.h"
using mozilla::system::Property;
static void* sNetUtilsLib;
static PRCallOnceType sInitNetUtilsLib;
static PRStatus
InitNetUtilsLib()
{
sNetUtilsLib = dlopen("/system/lib/libnetutils.so", RTLD_LAZY);
// We might fail to open the hardware lib. That's OK.
return PR_SUCCESS;
}
static void*
GetNetUtilsLibHandle()
{
PR_CallOnce(&sInitNetUtilsLib, InitNetUtilsLib);
return sNetUtilsLib;
}
// static
void*
NetUtils::GetSharedLibrary()
{
void* netLib = GetNetUtilsLibHandle();
if (!netLib) {
NS_WARNING("No /system/lib/libnetutils.so");
}
return netLib;
}
// static
int32_t
NetUtils::SdkVersion()
{
char propVersion[Property::VALUE_MAX_LENGTH];
Property::Get("ro.build.version.sdk", propVersion, "0");
int32_t version = strtol(propVersion, nullptr, 10);
return version;
}
DEFINE_DLFUNC(ifc_enable, int32_t, const char*)
DEFINE_DLFUNC(ifc_disable, int32_t, const char*)
DEFINE_DLFUNC(ifc_configure, int32_t, const char*, in_addr_t, uint32_t,
in_addr_t, in_addr_t, in_addr_t)
DEFINE_DLFUNC(ifc_reset_connections, int32_t, const char*, const int32_t)
DEFINE_DLFUNC(ifc_set_default_route, int32_t, const char*, in_addr_t)
DEFINE_DLFUNC(ifc_add_route, int32_t, const char*, const char*, uint32_t, const char*)
DEFINE_DLFUNC(ifc_remove_route, int32_t, const char*, const char*, uint32_t, const char*)
DEFINE_DLFUNC(ifc_remove_host_routes, int32_t, const char*)
DEFINE_DLFUNC(ifc_remove_default_route, int32_t, const char*)
DEFINE_DLFUNC(dhcp_stop, int32_t, const char*)
NetUtils::NetUtils()
{
}
int32_t NetUtils::do_ifc_enable(const char *ifname)
{
USE_DLFUNC(ifc_enable)
return ifc_enable(ifname);
}
int32_t NetUtils::do_ifc_disable(const char *ifname)
{
USE_DLFUNC(ifc_disable)
return ifc_disable(ifname);
}
int32_t NetUtils::do_ifc_configure(const char *ifname,
in_addr_t address,
uint32_t prefixLength,
in_addr_t gateway,
in_addr_t dns1,
in_addr_t dns2)
{
USE_DLFUNC(ifc_configure)
int32_t ret = ifc_configure(ifname, address, prefixLength, gateway, dns1, dns2);
return ret;
}
int32_t NetUtils::do_ifc_reset_connections(const char *ifname,
const int32_t resetMask)
{
USE_DLFUNC(ifc_reset_connections)
return ifc_reset_connections(ifname, resetMask);
}
int32_t NetUtils::do_ifc_set_default_route(const char *ifname,
in_addr_t gateway)
{
USE_DLFUNC(ifc_set_default_route)
return ifc_set_default_route(ifname, gateway);
}
int32_t NetUtils::do_ifc_add_route(const char *ifname,
const char *dst,
uint32_t prefixLength,
const char *gateway)
{
USE_DLFUNC(ifc_add_route)
return ifc_add_route(ifname, dst, prefixLength, gateway);
}
int32_t NetUtils::do_ifc_remove_route(const char *ifname,
const char *dst,
uint32_t prefixLength,
const char *gateway)
{
USE_DLFUNC(ifc_remove_route)
return ifc_remove_route(ifname, dst, prefixLength, gateway);
}
int32_t NetUtils::do_ifc_remove_host_routes(const char *ifname)
{
USE_DLFUNC(ifc_remove_host_routes)
return ifc_remove_host_routes(ifname);
}
int32_t NetUtils::do_ifc_remove_default_route(const char *ifname)
{
USE_DLFUNC(ifc_remove_default_route)
return ifc_remove_default_route(ifname);
}
int32_t NetUtils::do_dhcp_stop(const char *ifname)
{
USE_DLFUNC(dhcp_stop)
return dhcp_stop(ifname);
}
int32_t NetUtils::do_dhcp_do_request(const char *ifname,
char *ipaddr,
char *gateway,
uint32_t *prefixLength,
char *dns1,
char *dns2,
char *server,
uint32_t *lease,
char* vendorinfo)
{
int32_t ret = -1;
uint32_t sdkVersion = SdkVersion();
if (sdkVersion == 15) {
// ICS
// http://androidxref.com/4.0.4/xref/system/core/libnetutils/dhcp_utils.c#149
DEFINE_DLFUNC(dhcp_do_request, int32_t, const char*, char*, char*, uint32_t*, char*, char*, char*, uint32_t*)
USE_DLFUNC(dhcp_do_request)
vendorinfo[0] = '\0';
ret = dhcp_do_request(ifname, ipaddr, gateway, prefixLength, dns1, dns2,
server, lease);
} else if (sdkVersion == 16 || sdkVersion == 17) {
// JB 4.1 and 4.2
// http://androidxref.com/4.1.2/xref/system/core/libnetutils/dhcp_utils.c#175
// http://androidxref.com/4.2.2_r1/xref/system/core/include/netutils/dhcp.h#26
DEFINE_DLFUNC(dhcp_do_request, int32_t, const char*, char*, char*, uint32_t*, char*, char*, char*, uint32_t*, char*)
USE_DLFUNC(dhcp_do_request)
ret = dhcp_do_request(ifname, ipaddr, gateway, prefixLength, dns1, dns2,
server, lease, vendorinfo);
} else if (sdkVersion == 18) {
// JB 4.3
// http://androidxref.com/4.3_r2.1/xref/system/core/libnetutils/dhcp_utils.c#181
DEFINE_DLFUNC(dhcp_do_request, int32_t, const char*, char*, char*, uint32_t*, char**, char*, uint32_t*, char*, char*)
USE_DLFUNC(dhcp_do_request)
char *dns[3] = {dns1, dns2, nullptr};
char domains[Property::VALUE_MAX_LENGTH];
ret = dhcp_do_request(ifname, ipaddr, gateway, prefixLength, dns,
server, lease, vendorinfo, domains);
} else if (sdkVersion >= 19) {
// KitKat 4.4.X
// http://androidxref.com/4.4_r1/xref/system/core/libnetutils/dhcp_utils.c#18
// Lollipop 5.0
//http://androidxref.com/5.0.0_r2/xref/system/core/libnetutils/dhcp_utils.c#186
DEFINE_DLFUNC(dhcp_do_request, int32_t, const char*, char*, char*, uint32_t*, char**, char*, uint32_t*, char*, char*, char*)
USE_DLFUNC(dhcp_do_request)
char *dns[3] = {dns1, dns2, nullptr};
char domains[Property::VALUE_MAX_LENGTH];
char mtu[Property::VALUE_MAX_LENGTH];
ret = dhcp_do_request(ifname, ipaddr, gateway, prefixLength, dns, server, lease, vendorinfo, domains, mtu);
} else {
NS_WARNING("Unable to perform do_dhcp_request: unsupported sdk version!");
}
return ret;
}
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