tmcc.c 4.89 KB
Newer Older
1 2 3 4 5 6 7 8 9
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <errno.h>
#include <syslog.h>
#include <unistd.h>
#include <signal.h>
#include <stdarg.h>
Mike Hibler's avatar
Mike Hibler committed
10 11
#include <stdlib.h>
#include <string.h>
12 13 14
#include <sys/time.h>
#include <time.h>
#include <assert.h>
15 16 17 18
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
19 20 21 22
#include "decls.h"

void		sigcatcher(int foo);

Mike Hibler's avatar
Mike Hibler committed
23
int
24 25
main(int argc, char **argv)
{
Mike Hibler's avatar
Mike Hibler committed
26 27 28
	int			sock, data, n, cc;
	struct sockaddr_in	name;
#if 0
29
	struct timeval		tv;
Mike Hibler's avatar
Mike Hibler committed
30
#endif
31 32
	struct hostent		*he;
	struct in_addr		serverip;
Mike Hibler's avatar
Mike Hibler committed
33
	char			buf[MYBUFSIZE], *bp, *response = "";
Mike Hibler's avatar
Mike Hibler committed
34 35 36 37 38 39 40 41 42
#ifdef UDPTEST
	int			useudp = 0;
	void			doudp(int argc, char **argv);

	if (argc > 1 && strcmp(argv[1], "-u") == 0) {
		useudp = 1;
		argc--, argv++;
	}
#endif
43

44
	if (argc < 2 || argc > 4) {
45 46 47 48
		fprintf(stderr, "usage: %s <command>\n", argv[0]);
		exit(1);
	}

49 50 51 52 53 54 55 56 57 58 59 60
#ifdef	LBS
	inet_aton(MASTERNODE, &serverip);
#else
	he = gethostbyname(MASTERNODE);
	if (he)
		memcpy((char *)&serverip, he->h_addr, he->h_length);
	else {
		fprintf(stderr, "gethostbyname(%s) failed\n", MASTERNODE); 
		exit(1);
	}
#endif

Mike Hibler's avatar
Mike Hibler committed
61 62 63 64
#ifdef UDPTEST
	if (useudp)
		doudp(argc, argv);
#endif
65 66 67 68 69 70 71 72 73 74
	while (1) {
		/* Create socket from which to read. */
		sock = socket(AF_INET, SOCK_STREAM, 0);
		if (sock < 0) {
			perror("creating stream socket:");
			exit(1);
		}

		/* Create name. */
		name.sin_family = AF_INET;
75
		name.sin_addr   = serverip;
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
		name.sin_port = htons(TBSERVER_PORT);

		if (connect(sock,
			    (struct sockaddr *) &name, sizeof(name)) == 0) {
			break;
		}
		if (errno == ECONNREFUSED) {
			fprintf(stderr, "Connection to TMCD refused "
				"Sleeping a little while ...\n");
			sleep(10);
		}
		else {
			perror("connecting stream socket");
			exit(1);
		}
		close(sock);
	}

	data = 1;
	if (setsockopt(sock, SOL_SOCKET,
		       SO_KEEPALIVE, &data, sizeof(data)) < 0) {
		perror("setsockopt SO_KEEPALIVE");
		close(sock);
		exit(1);
	}
101
#if 0
102 103 104 105
#ifndef linux
	tv.tv_sec  = 30;
	tv.tv_usec = 0;
	if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
106
		perror("setsockopt SO_RCVTIMEO");
107 108 109
		close(sock);
		exit(1);
	}
110
#endif
111
#endif
112 113
	switch(argc - 1) {
	case 1:
114
		n = snprintf(buf, sizeof(buf) - 1, "%s", argv[1]);
115 116
		break;
	case 2:
117
		n = snprintf(buf, sizeof(buf) - 1, "%s %s", argv[1], argv[2]);
118 119 120 121 122 123 124 125 126 127
		break;
	case 3:
		n = snprintf(buf, sizeof(buf) - 1, "%s %s %s",
			     argv[1], argv[2], argv[3]);
		break;
	default:
		fprintf(stderr, "Too many command arguments!\n");
		exit(1);
	}
		
128
	if (n >= sizeof(buf)) {
Mike Hibler's avatar
Mike Hibler committed
129
		fprintf(stderr, "Command too large!\n");
130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
		exit(1);
	}

	/*
	 * Write the command to the socket and wait for the response
	 */
	bp = buf;
	while (n) {
		if ((cc = write(sock, bp, n)) <= 0) {
			if (cc < 0) {
				perror("Writing to socket:");
				exit(1);
			}
			fprintf(stderr, "write aborted");
			exit(1);
		}
		bp += cc;
		n  -= cc;
	}

	while (1) {
		if ((cc = read(sock, buf, sizeof(buf))) <= 0) {
			if (cc < 0) {
				perror("Reading from socket:");
				exit(1);
			}
			break;
		}
		buf[cc] = '\0';
		bp = (char *) malloc(strlen(response) + cc + 1);
		assert(bp);
		strcpy(bp, response);
		strcat(bp, buf);
		response = bp;
	}
	printf("%s", response);

	close(sock);
	exit(0);
}

void
sigcatcher(int foo)
{
}

Mike Hibler's avatar
Mike Hibler committed
176 177 178 179 180 181 182 183 184 185 186
#ifdef UDPTEST
/*
 * Not very robust, send a single request, read a single reply. 
 */
void
doudp(int argc, char **argv)
{
	int			sock, length, n, cc;
	struct sockaddr_in	name, client;
	struct hostent		*he;
	struct in_addr		serverip;
Mike Hibler's avatar
Mike Hibler committed
187
	char			buf[MYBUFSIZE], *bp, *response = "";
Mike Hibler's avatar
Mike Hibler committed
188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257

	if (argc < 2 || argc > 3) {
		fprintf(stderr, "usage: %s <command>\n", argv[0]);
		exit(1);
	}

#ifdef	LBS
	inet_aton(MASTERNODE, &serverip);
#else
	he = gethostbyname(MASTERNODE);
	if (he)
		memcpy((char *)&serverip, he->h_addr, he->h_length);
	else {
		fprintf(stderr, "gethostbyname(%s) failed\n", MASTERNODE); 
		exit(1);
	}
#endif

	/* Create socket from which to read. */
	sock = socket(AF_INET, SOCK_DGRAM, 0);
	if (sock < 0) {
		perror("creating dgram socket:");
		exit(1);
	}

	/* Create name. */
	name.sin_family = AF_INET;
	name.sin_addr   = serverip;
	name.sin_port = htons(TBSERVER_PORT);

	if (argc == 2)
		n = snprintf(buf, sizeof(buf) - 1, "%s", argv[1]);
	else
		n = snprintf(buf, sizeof(buf) - 1, "%s %s", argv[1], argv[2]);
	if (n >= sizeof(buf)) {
		fprintf(stderr, "Command too large!\n");
		exit(1);
	}

	/*
	 * Write the command to the socket and wait for the response
	 */
	cc = sendto(sock, buf, n, 0, (struct sockaddr *)&name, sizeof(name));
	if (cc != n) {
		if (cc < 0) {
			perror("Writing to socket:");
			exit(1);
		}
		fprintf(stderr, "short write (%d != %d)\n", cc, n);
		exit(1);
	}

	cc = recvfrom(sock, buf, sizeof(buf), 0,
		      (struct sockaddr *)&client, &length);
	if (cc < 0) {
		perror("Reading from socket:");
		exit(1);
	}
	buf[cc] = '\0';
	bp = (char *) malloc(strlen(response) + cc + 1);
	assert(bp);
	strcpy(bp, response);
	strcat(bp, buf);
	response = bp;
	printf("%s", response);

	close(sock);
	exit(0);
}
#endif