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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
#include "cpp.h"
#ifdef _WIN32
#include "boinc_win.h"
#else
#include "config.h"
#include <cstdio>
#include <cstring>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_NETDB_H
#include <netdb.h>
#endif
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#endif
#ifdef __APPLE__
#include <Carbon/Carbon.h>
#endif
#include "error_numbers.h"
#include "file_names.h"
#include "mac_address.h"
#include "parse.h"
#include "str_replace.h"
#include "str_util.h"
#include "util.h"
#include "client_msgs.h"
#include "hostinfo.h"
// get domain name and IP address of this host
// Android: if domain_name is empty, set it to android_xxxxxxxx
//
int HOST_INFO::get_local_network_info() {
safe_strcpy(ip_addr, "");
#ifdef ANDROID
if (strlen(domain_name) && strcmp(domain_name, "localhost")) return 0;
char buf[256];
make_random_string("", buf);
buf[8] = 0;
snprintf(domain_name, sizeof(domain_name), "android_%s", buf);
return 0;
#endif
struct sockaddr_storage s;
safe_strcpy(domain_name, "");
// it seems like we should use getdomainname() instead of gethostname(),
// but on FC6 it returns "(none)".
//
if (gethostname(domain_name, 256)) {
return ERR_GETHOSTBYNAME;
}
int retval = resolve_hostname(domain_name, s);
if (retval) return retval;
#ifdef _WIN32
sockaddr_in* sin = (sockaddr_in*)&s;
strlcpy(ip_addr, inet_ntoa(sin->sin_addr), sizeof(ip_addr));
#else
if (s.ss_family == AF_INET) {
sockaddr_in* sin = (sockaddr_in*)&s;
inet_ntop(AF_INET, (void*)(&sin->sin_addr), ip_addr, 256);
} else {
sockaddr_in6* sin = (sockaddr_in6*)&s;
inet_ntop(AF_INET6, (void*)(&sin->sin6_addr), ip_addr, 256);
}
#endif
return 0;
}
// make a random string using time of day and host info.
// Not recommended for password generation;
// use as a last resort if more secure methods fail
//
void HOST_INFO::make_random_string(const char* salt, char* out) {
char buf[1024];
#ifdef ANDROID
snprintf(buf, sizeof(buf),
"%f%s%s%f%s",
dtime(), domain_name, ip_addr, d_free, salt
);
#else
snprintf(buf, sizeof(buf),
"%d%.15e%s%s%f%s",
getpid(), dtime(), domain_name, ip_addr, d_free, salt
);
#endif
md5_block((const unsigned char*) buf, (int)strlen(buf), out);
}
// make a host cross-project ID.
// Should be unique across hosts with very high probability
//
void HOST_INFO::generate_host_cpid() {
int retval;
char buf[256+MAXPATHLEN];
char dir[MAXPATHLEN];
// if a MAC address is available, compute an ID based on it;
// this has the advantage of stability
// (a given host will get the same ID each time BOINC is reinstalled)
//
retval = get_mac_address(buf);
if (retval) {
make_random_string("", host_cpid);
return;
}
// append the current dir to the MAC address;
// that way if there are multiple instances per host
// (used by some grid installations)
// the instances will get different CPIDs
//
boinc_getcwd(dir);
safe_strcat(buf, dir);
md5_block((const unsigned char*) buf, (int)strlen(buf), host_cpid);
}
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