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