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/*
* remhost.cc: a program to change the state of a compilation host.
*
* Copyright (C) 2005, 2006 Victor T. Norman
*
* This program 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.
*
* 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "dmucs.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fstream>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <string>
#include <sstream>
#include <errno.h>
#include "COSMIC/HDR/sockets.h"
extern char **environ;
void usage(const char *prog);
bool debugMode = false;
int
main(int argc, char *argv[])
{
/*
* o Open a client socket to the server ip/port.
* o Send my IP address in a 'remove host' or 'add host' request, depending
* on the name of the executable.
* o Close the client socket.
*/
// TODO: need to take optional ip address as argument -- to remove / add
// host on a remote machine.
/*
* Process command-line arguments:
*
* -s <server>, --server <server>: the name of the server machine.
* -p <port>, --port <port>: the port number to send to (default: 6714).
* -D, --debug: debug mode (default: off)
*/
std::ostringstream serverName;
serverName << "@" << SERVER_MACH_NAME;
int serverPortNum = SERVER_PORT_NUM;
char *distingProp = '\0';
int nextarg = 1;
for (; nextarg < argc; nextarg++) {
if (strequ("-s", argv[nextarg]) || strequ("--server", argv[nextarg])) {
if (++nextarg >= argc) {
usage(argv[0]);
return -1;
}
serverName.seekp(1); // remove everything after the first "@".
serverName << argv[nextarg] << '\0';
} else if (strequ("-p", argv[nextarg]) ||
strequ("--port", argv[nextarg])) {
if (++nextarg >= argc) {
usage(argv[0]);
return -1;
}
serverPortNum = atoi(argv[nextarg]);
} else if (strequ("-t", argv[nextarg]) ||
strequ("--type", argv[nextarg])) {
if (++nextarg >= argc) {
usage(argv[0]);
return -1;
}
distingProp = argv[nextarg];
} else if (strequ("-D", argv[nextarg]) ||
strequ("--debug", argv[nextarg])) {
debugMode = true;
} else {
/* We are looking at the command to run, supposedly. */
break;
}
}
std::ostringstream clientPortStr;
clientPortStr << "c" << serverPortNum;
DMUCS_DEBUG((stderr, "doing Sopen with %s, %s\n",
serverName.str().c_str(), clientPortStr.str().c_str()));
Socket *client_sock = Sopen((char *) serverName.str().c_str(),
(char *) clientPortStr.str().c_str());
if (!client_sock) {
fprintf(stderr, "Could not open client: %s\n", strerror(errno));
return -1;
}
char hostname[256];
if (gethostname(hostname, 256) < 0) {
fprintf(stderr, "Could not get my hostname\n");
Sclose(client_sock);
return -1;
}
struct hostent *he = gethostbyname(hostname);
if (he == NULL) {
fprintf(stderr, "Could not get my hostname\n");
Sclose(client_sock);
return -1;
}
struct in_addr in;
memcpy(&in.s_addr, he->h_addr_list[0], sizeof(in.s_addr));
struct sockaddr sck;
socklen_t s = sizeof(sck);
getsockname(client_sock->skt, &sck, &s);
struct sockaddr_in *sin = (struct sockaddr_in *) &sck;
/* If the name of the program is "addhost", then send "up" to the
dmucs server. Otherwise, send "down". */
const char *op = (strstr(argv[0], "addhost") != NULL) ? "up" : "down";
std::ostringstream clientReqStr;
clientReqStr << "status " << inet_ntoa(in) << " " << op << " "
<< distingProp;
DMUCS_DEBUG((stderr, "Writing -->%s<-- to the server\n",
clientReqStr.str().c_str()));
Sputs((char *) clientReqStr.str().c_str(), client_sock);
Sclose(client_sock);
return 0;
}
void
usage(const char *prog)
{
fprintf(stderr, "Usage: %s [-s|--server <server>] [-p|--port <port>] "
"[-t|--type <str>] [-D|--debug] <command> [args] \n\n", prog);
}
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