mirror of https://github.com/kiwix/libkiwix.git
251 lines
7.2 KiB
C++
251 lines
7.2 KiB
C++
/*
|
|
* Copyright 2012 Emmanuel Engelhart <kelson@kiwix.org>
|
|
* Copyright 2021 Nikhil Tanwar <2002nikhiltanwar@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* any later version.
|
|
*
|
|
* 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
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "tools.h"
|
|
#include <tools/networkTools.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <curl/curl.h>
|
|
|
|
#include <sstream>
|
|
#include <iostream>
|
|
#include <stdexcept>
|
|
|
|
#ifdef _WIN32
|
|
#include <iphlpapi.h>
|
|
#include <winsock2.h>
|
|
#include <ws2tcpip.h>
|
|
#include <iostream>
|
|
#else
|
|
#include <unistd.h>
|
|
#include <arpa/inet.h>
|
|
#include <ifaddrs.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <netdb.h>
|
|
#endif
|
|
|
|
#ifdef __HAIKU__
|
|
#include <sys/sockio.h>
|
|
#endif
|
|
|
|
namespace kiwix
|
|
{
|
|
|
|
namespace
|
|
{
|
|
|
|
size_t write_callback_to_iss(char* ptr, size_t size, size_t nmemb, void* userdata)
|
|
{
|
|
auto str = static_cast<std::stringstream*>(userdata);
|
|
str->write(ptr, nmemb);
|
|
return nmemb;
|
|
}
|
|
|
|
} // unnamed namespace
|
|
|
|
std::string download(const std::string& url) {
|
|
auto curl = curl_easy_init();
|
|
std::stringstream ss;
|
|
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
|
|
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
|
|
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &write_callback_to_iss);
|
|
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ss);
|
|
auto res = curl_easy_perform(curl);
|
|
if (res != CURLE_OK) {
|
|
curl_easy_cleanup(curl);
|
|
throw std::runtime_error("Cannot perform request");
|
|
}
|
|
long response_code;
|
|
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
|
|
curl_easy_cleanup(curl);
|
|
if (response_code != 200) {
|
|
throw std::runtime_error("Invalid return code from server");
|
|
}
|
|
return ss.str();
|
|
}
|
|
|
|
|
|
namespace
|
|
{
|
|
|
|
#ifdef _WIN32
|
|
|
|
std::map<std::string, IpAddress> getNetworkInterfacesWin() {
|
|
std::map<std::string, IpAddress> interfaces;
|
|
|
|
const int working_buffer_size = 15000;
|
|
const int max_tries = 3;
|
|
|
|
ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
|
|
|
|
// default to unspecified address family (both)
|
|
ULONG family = AF_UNSPEC;
|
|
|
|
ULONG outBufLen = working_buffer_size;
|
|
ULONG Iterations = 0;
|
|
DWORD dwRetVal = 0;
|
|
PIP_ADAPTER_ADDRESSES interfacesHead = NULL;
|
|
|
|
// Successively allocate the required memory until GetAdaptersAddresses does not
|
|
// results in ERROR_BUFFER_OVERFLOW for a maximum of max_tries
|
|
do{
|
|
interfacesHead = (IP_ADAPTER_ADDRESSES *) malloc(outBufLen);
|
|
if (interfacesHead == NULL) {
|
|
std::cerr << "Memory allocation failed for IP_ADAPTER_ADDRESSES struct" << std::endl;
|
|
return interfaces;
|
|
}
|
|
|
|
dwRetVal = GetAdaptersAddresses(family, flags, NULL, interfacesHead, &outBufLen);
|
|
} while ((dwRetVal == ERROR_BUFFER_OVERFLOW) && (Iterations < max_tries));
|
|
|
|
if (dwRetVal == NO_ERROR) {
|
|
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = NULL;
|
|
unsigned int i = 0;
|
|
for (PIP_ADAPTER_ADDRESSES temp = interfacesHead; temp != NULL;
|
|
temp = temp->Next) {
|
|
pUnicast = temp->FirstUnicastAddress;
|
|
if (pUnicast != NULL) {
|
|
for (i = 0; pUnicast != NULL; i++){
|
|
if (pUnicast->Address.lpSockaddr->sa_family == AF_INET)
|
|
{
|
|
sockaddr_in *si = (sockaddr_in *)(pUnicast->Address.lpSockaddr);
|
|
char host[INET_ADDRSTRLEN]={0};
|
|
inet_ntop(AF_INET, &(si->sin_addr), host, sizeof(host));
|
|
interfaces[temp->AdapterName].addr=host;
|
|
}
|
|
else if (pUnicast->Address.lpSockaddr->sa_family == AF_INET6)
|
|
{
|
|
sockaddr_in6 *si = (sockaddr_in6 *)(pUnicast->Address.lpSockaddr);
|
|
char host[INET6_ADDRSTRLEN]={0};
|
|
inet_ntop(AF_INET6, &(si->sin6_addr), host, sizeof(host));
|
|
if (!IN6_IS_ADDR_LINKLOCAL(&(si->sin6_addr)))
|
|
interfaces[temp->AdapterName].addr6=host;
|
|
}
|
|
pUnicast = pUnicast->Next;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
std::cerr << "Call to GetAdaptersAddresses failed with error: "<< dwRetVal << std::endl;
|
|
}
|
|
|
|
if (interfacesHead) free(interfacesHead);
|
|
|
|
return interfaces;
|
|
}
|
|
|
|
#else
|
|
|
|
std::map<std::string, IpAddress> getNetworkInterfacesPosix() {
|
|
std::map<std::string, IpAddress> interfaces;
|
|
|
|
struct ifaddrs *interfacesHead;
|
|
if (getifaddrs(&interfacesHead) == -1) {
|
|
perror("getifaddrs");
|
|
}
|
|
|
|
for (ifaddrs *temp = interfacesHead; temp != NULL; temp = temp->ifa_next) {
|
|
if (temp->ifa_addr == NULL) continue;
|
|
|
|
if (temp->ifa_addr->sa_family == AF_INET) {
|
|
sockaddr_in *si = (sockaddr_in *)(temp->ifa_addr);
|
|
char host[INET_ADDRSTRLEN] = {0};
|
|
inet_ntop(AF_INET, &(si->sin_addr), host, sizeof(host));
|
|
interfaces[temp->ifa_name].addr=host;
|
|
} else if (temp->ifa_addr->sa_family == AF_INET6) {
|
|
sockaddr_in6 *si = (sockaddr_in6 *)(temp->ifa_addr);
|
|
char host[INET6_ADDRSTRLEN] = {0};
|
|
inet_ntop(AF_INET6, &(si->sin6_addr), host, sizeof(host));
|
|
if (!IN6_IS_ADDR_LINKLOCAL(&(si->sin6_addr)))
|
|
interfaces[temp->ifa_name].addr6=host;
|
|
}
|
|
}
|
|
|
|
freeifaddrs(interfacesHead);
|
|
|
|
return interfaces;
|
|
}
|
|
|
|
#endif
|
|
|
|
} // unnamed namespace
|
|
|
|
std::map<std::string, IpAddress> getNetworkInterfacesIPv4Or6() {
|
|
#ifdef _WIN32
|
|
return getNetworkInterfacesWin();
|
|
#else
|
|
return getNetworkInterfacesPosix();
|
|
#endif
|
|
}
|
|
|
|
std::map<std::string, std::string> getNetworkInterfaces() {
|
|
std::map<std::string, std::string> result;
|
|
for ( const auto& kv : getNetworkInterfacesIPv4Or6() ) {
|
|
const std::string& interfaceName = kv.first;
|
|
const auto& ipAddresses = kv.second;
|
|
if ( !ipAddresses.addr.empty() ) {
|
|
result[interfaceName] = ipAddresses.addr;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
std::string getBestPublicIp(bool ipv6) {
|
|
IpAddress bestPublicIp = IpAddress{"127.0.0.1","::1"};
|
|
std::map<std::string, IpAddress> interfaces = getNetworkInterfacesIPv4Or6();
|
|
|
|
#ifndef _WIN32
|
|
const char* const prioritizedNames[] =
|
|
{ "eth0", "eth1", "wlan0", "wlan1", "en0", "en1" };
|
|
for(auto name: prioritizedNames) {
|
|
auto it=interfaces.find(name);
|
|
if(it != interfaces.end() && !(ipv6 && (*it).second.addr6.empty())) {
|
|
bestPublicIp = (*it).second;
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
const char* const prefixes[] = { "192.168", "172.16.", "10.0" };
|
|
for(auto prefix : prefixes){
|
|
for(auto& itr : interfaces) {
|
|
std::string interfaceIp(itr.second.addr);
|
|
if (interfaceIp.find(prefix) == 0 && !(ipv6 && itr.second.addr6.empty())) {
|
|
bestPublicIp = itr.second;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return ipv6 ? bestPublicIp.addr6 : bestPublicIp.addr;
|
|
}
|
|
|
|
|
|
std::string getBestPublicIp()
|
|
{
|
|
return getBestPublicIp(false);
|
|
}
|
|
|
|
} // namespace kiwix
|