mirror of https://github.com/BOINC/boinc.git
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
// The contents of this file are subject to the BOINC Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://boinc.berkeley.edu/license_1.0.txt
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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#ifdef _WIN32
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#include "boinc_win.h"
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#endif
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#ifndef _WIN32
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#include <stdio.h>
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#include <string.h>
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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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#include "util.h"
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#include "parse.h"
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#include "file_names.h"
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#include "client_msgs.h"
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#include "error_numbers.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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//
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#ifdef _WIN32
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int get_local_network_info(
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char* domain_name, int domlen, char* ip_addr, int iplen
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) {
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char buf[256];
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struct in_addr addr;
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if (gethostname(buf, 256)) return ERR_GETHOSTBYNAME;
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struct hostent* he = gethostbyname(buf);
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if (!he || !he->h_addr_list[0]) {
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msg_printf(NULL, MSG_ERROR, "get_local_network_info(): gethostbyname failed\n");
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return ERR_GETHOSTBYNAME;
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}
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safe_strncpy(domain_name, he->h_name, domlen);
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memcpy(&addr, he->h_addr_list[0], sizeof(addr));
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safe_strncpy(ip_addr, inet_ntoa(addr), iplen);
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return 0;
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}
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#else
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// gethostbyname() is a linkage nightmare on UNIX systems (go figure)
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// so use a kludge instead: run ping and parse the output
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// should be "PING domainname (ipaddr) ..."
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//
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static int try_ping(
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char* cmd, char* domain_name, int domlen, char* ip_addr, int iplen
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) {
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int retval;
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char buf[256];
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retval = system(cmd);
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if (retval) return retval;
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FILE* f = fopen(TEMP_FILE_NAME, "r");
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if (!f) return ERR_FOPEN;
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fgets(buf, 256, f);
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fclose(f);
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char *p, *q;
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p = strchr(buf, ' ');
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if (!p) return ERR_NULL;
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p++;
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q = strchr(p, ' ');
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if (!q) return ERR_NULL;
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*q = 0;
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safe_strncpy(domain_name, p, domlen);
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q++;
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p = strchr(q, '(');
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if (!p) return ERR_NULL;
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p++;
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q = strchr(p, ')');
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if (!q) return ERR_NULL;
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*q = 0;
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safe_strncpy(ip_addr, p, iplen);
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return 0;
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}
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int get_local_network_info(
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char* domain_name, int domlen, char* ip_addr, int iplen
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) {
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char hostname[256];
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char buf[256];
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int retval;
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if (gethostname(hostname, 256)) return ERR_GETHOSTBYNAME;
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sprintf(buf, "ping -c 1 -w 1 %s > %s", hostname, TEMP_FILE_NAME);
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retval = try_ping(buf, domain_name, domlen, ip_addr, iplen);
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if (retval) {
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sprintf(buf, "ping -c 1 %s > %s", hostname, TEMP_FILE_NAME);
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return try_ping(buf, domain_name, domlen, ip_addr, iplen);
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}
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return 0;
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}
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#endif
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