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/*
* This file is part of PowerDNS or weakforced.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* 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 "config.h"
#include <stddef.h>
#define SYSLOG_NAMES
#include <syslog.h>
#include <getopt.h>
#include <netinet/tcp.h>
#include <limits>
#include "minicurl.hh"
#include "wforce_exception.hh"
#include <iostream>
#include <fstream>
#include "iputils.hh"
#include "json11.hpp"
#include "base64.hh"
#include "sstuff.hh"
#include "dolog.hh"
using namespace std;
using namespace json11;
void print_help()
{
cout<<"Syntax: dump_entries [-u,--uri wforce uri] [-l,--local-addr address] [-p,--local-port port] [-w,--wforce-pwd password] [-f,--filename file] [-h,--help]\n";
cout<<"\n";
cout<<"-u,--uri address <Mandatory> Connect to wforce on the specified URI\n";
cout<<"-l,--local-addr address <Mandatory> Listen for results on the specified local IP address\n";
cout<<"-p,--local-port port <Mandatory> Listen on the specified port\n";
cout<<"-w,--wforce-pwd password <Mandatory> The password to authenticate to wforce\n";
cout<<"-f,--filename file <Optional> Send the results to a file\n";
cout<<"-h,--help Display this helpful message\n";
cout<<"\n";
}
bool g_console = true;
bool g_docker = false;
LogLevel g_loglevel{LogLevel::Info};
int main(int argc, char** argv)
{
string uri, local_addr, password, filename;
int local_port=0;
struct option longopts[]={
{"uri", required_argument, 0, 'u'},
{"local-addr", required_argument, 0, 'l'},
{"local-port", required_argument, 0, 'p'},
{"wforce-pwd", required_argument, 0, 'w'},
{"filename", required_argument, 0, 'f'},
{"help", 0, 0, 'h'},
{0,0,0,0}
};
int longindex=0;
for(;;) {
int c=getopt_long(argc, argv, "hu:l:p:w:f:", longopts, &longindex);
if(c==-1)
break;
switch(c) {
case 'u':
uri = optarg;
break;
case 'l':
local_addr = optarg;
break;
case 'p':
try {
local_port = stoi(optarg);
}
catch (const std::exception& e) {
cerr << "Could not parse local port - must be an integer" << endl;
exit(EXIT_FAILURE);
}
break;
case 'w':
password = optarg;
break;
case 'f':
filename = optarg;
break;
case 'h':
print_help();
exit(EXIT_SUCCESS);
break;
}
}
argc-=optind;
argv+=optind;
if ((uri.empty()) ||
(local_addr.empty()) ||
(local_port == 0) ||
(password.empty())) {
cout << "Missing mandatory arguments...\n";
print_help();
exit(EXIT_FAILURE);
}
// Open file if specified
ofstream myfile;
if (!filename.empty()) {
myfile.open(filename, ios::out | ios::trunc);
if (!myfile.is_open()) {
cerr << "Could not open " << filename << " for writing." << endl;
exit(EXIT_FAILURE);
}
}
// Listen on local IP and port
ComboAddress local_ca;
try {
local_ca = ComboAddress(local_addr, local_port);
}
catch (const WforceException& e) {
cerr << "Error parsing local address and port " << local_addr << ", " << local_port << ". Make sure to use IP addresses not hostnames" << endl;
exit(EXIT_FAILURE);
}
try {
int listen_sock = socket(local_ca.sin4.sin_family, SOCK_STREAM, 0);
if (listen_sock < 0)
throw std::runtime_error("Failed to create socket");
SSetsockopt(listen_sock, SOL_SOCKET, SO_REUSEADDR, 1);
SBind(listen_sock, local_ca);
SListen(listen_sock, 1024);
Socket listen_sock_wrapper(listen_sock); // This ensures the socket gets closed
// Connect to the specified wforce address and port
// and request to dump entries to our local address and port
MiniCurl mc;
MiniCurlHeaders mch;
string error_msg;
mch.insert(make_pair("Authorization", "Basic " + Base64Encode("wforce:"+password)));
mch.insert(make_pair("Content-Type", "application/json"));
Json::object post_json = {{"dump_host", local_addr},
{"dump_port", local_port}};
if (uri.find("dumpEntries") == string::npos) {
uri += "/?command=dumpEntries";
}
if (mc.postURL(uri, Json(post_json).dump(), mch, error_msg) != true) {
cerr << "Post to wforce URI [" << uri << "] failed, error=" << error_msg;
exit(EXIT_FAILURE);
}
// Finally wait for the dumped entries and print them out
ComboAddress remote(local_ca);
int fd = SAccept(listen_sock, remote);
Socket sock(fd);
string buf;
try {
for (;;) {
sock.read(buf);
if (buf.empty())
break;
if (filename.empty())
cout << buf;
else
myfile << buf;
}
}
catch (const NetworkError& e) {
cerr << e.what() << endl;
}
}
catch (const std::exception& e) {
cerr << "dump_entries: error: " << e.what() << endl;
exit(EXIT_FAILURE);
}
catch (const WforceException& e){
cerr << "dump_entries: error: " << e.reason << endl;
exit(EXIT_FAILURE);
}
if (filename.empty())
cout << endl;
else
myfile << endl;
if (myfile.is_open())
myfile.close();
exit(EXIT_SUCCESS);
}
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