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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* queryhandler.cc
*
* Tue May 6 14:50:56 CEST 2008
* Copyright 2008 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro 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 2 of the License, or
* (at your option) any later version.
*
* Pracro 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 Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "queryhandler.h"
// For time
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// For getpid
#include <unistd.h>
#include <sys/types.h>
// For time
#include <time.h>
// For strerror and errno
#include <errno.h>
// For socket and friends
#include <sys/socket.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
// For ioctl
#include <sys/ioctl.h>
typedef struct {
in_addr_t ip;
time_t time;
pid_t pid;
unsigned short int count;
} UID;
#define SIOCGIFCONF 0x8912 // get iface list
static in_addr_t getIP(const char *interface)
{
in_addr_t ret = 0;
int numreqs = 30, sd, n;
struct ifconf ifc;
struct ifreq *ifr;
struct in_addr *ia;
sd = socket(AF_INET, SOCK_STREAM, 0);
if(sd == -1) {
// throw Pentominos::UIDCouldNotConnectException(strerror(errno));
}
ifc.ifc_buf = NULL;
ifc.ifc_len = sizeof(struct ifreq) * numreqs;
ifc.ifc_buf = (char*)malloc(ifc.ifc_len);
if(ifc.ifc_buf == NULL) {
// throw Pentominos::UIDOutOfMemoryException();
}
if (ioctl(sd, SIOCGIFCONF, &ifc) < 0) {
// throw Pentominos::UIDInterfaceListException(strerror(errno));
}
ifr = ifc.ifc_req;
for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
ia = (struct in_addr *)((ifr->ifr_ifru.ifru_addr.sa_data)+2);
if(!strcmp(ifr->ifr_ifrn.ifrn_name, interface)) {
ret = *(in_addr_t*)ia;
}
ifr++;
}
if(!ret) { // Still no interface... We're fucked!
// throw Pentominos::UIDInterfaceException(interface);
}
free(ifc.ifc_buf);
return ret;
}
static unsigned short counter = 0;
static unsigned short getCounter()
{
return counter++;
}
static UID uid = {0,0,0,0};
static std::string getUID(const char *interface)
{
if(!uid.ip) uid.ip = getIP(interface);
time_t t = time(NULL);
if(uid.time != t) counter = 0; // If time differes, reset the counter
uid.time = t; // We need this value every time.
if(!uid.pid) uid.pid = getpid();
uid.count = getCounter();
char buf[32];
sprintf(buf, "%08x%08x%04x%04x", uid.ip, (unsigned int)uid.time, uid.pid, uid.count);
return std::string(buf);
}
QueryHandler::QueryHandler(TCPSocket *socket, std::string cpr)
{
this->cpr = cpr;
this->socket = socket;
}
void QueryHandler::addQuery(Query &query)
{
queries.push_back(query);
}
std::string QueryHandler::exec()
{
time_t timestamp = time(NULL);
std::string uid = getUID("eth0");
char buf[512];
char header[] =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<artefact xmlns=\"http://www.aasimon.org/pentominos\"\n"
" xmlns:pentominos=\"http://www.aasimon.org/pentominos\"\n"
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
" xsi:schemaLocation=\"http://www.aasimon.org/pentominos schema.xsd\">\n";
socket->write(header, strlen(header));
sprintf(buf, " <pentominos:entry cpr=\"%s\"\n"
" src_addr=\"%s\"\n"
" dst_addr=\"%s\"\n"
" timestamp=\"%d\"\n"
" uid=\"%s\"/>\n",
cpr.c_str(),
socket->srcaddr().c_str(),
socket->dstaddr().c_str(),
(unsigned int)timestamp,
uid.c_str());
socket->write(buf, strlen(buf));
std::vector< Query >::iterator j = queries.begin();
while(j != queries.end()) {
Query query = *j;
sprintf(buf, " <pentominos:query format=\"pracroxml\"\n"
" device_id=\"%s\"\n"
" device_type=\"%s\"\n"
" filter=\"latest\"\n"
" location=\"all\"/>\n",
query.attributes["class"].c_str(),
query.attributes["class"].c_str());
socket->write(buf, strlen(buf));
j++;
}
sprintf(buf, "</artefact>\n");
socket->write(buf, strlen(buf));
// Terminate
char term[] = "\0";
socket->write(term, 1);
// Wait for answer
char abuf[64];
int res;
std::string answer;
do {
memset(abuf, 0, sizeof(abuf));
res = socket->read(abuf, sizeof(abuf) - 1);
answer += abuf;
} while(res);
return answer;
}
#ifdef TEST_QUERYHANDLER
int main()
{
TCPSocket s;
s.connect("localhost", 11108);
QueryHandler qh(&s, "2003791613");
Query q1;
q1.attributes["device_id"] = "lensmeter";
q1.attributes["device_type"] = "lensmeter";
qh.addQuery(q1);
std::string res = qh.exec();
printf("%s\n", res.c_str());
return 0;
}
#endif/*TEST_QUERYHANDLER*/
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