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